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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korea Academia-Industrial cooperation Society
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Journal DOI :
The Korea Academia-Industrial cooperation Society
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Volume & Issues
Volume 12, Issue 12 - Dec 2011
Volume 12, Issue 11 - Nov 2011
Volume 12, Issue 10 - Oct 2011
Volume 12, Issue 9 - Sep 2011
Volume 12, Issue 8 - Aug 2011
Volume 12, Issue 7 - Jul 2011
Volume 12, Issue 6 - Jun 2011
Volume 12, Issue 5 - May 2011
Volume 12, Issue 4 - Apr 2011
Volume 12, Issue 3 - Mar 2011
Volume 12, Issue 2 - Feb 2011
Volume 12, Issue 1 - Jan 2011
Selecting the target year
A Study on the Stability of Torque for Compressing-Cutting Device of Nano Tube Manufacturing System Using DC Servo Motor
Choi, Kab-Yong ; Oh, Tae-Il ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5393~5397
DOI : 10.5762/KAIS.2011.12.12.5393
The compressing-cutting device is used for manufacturing nano tube. the purpose of this study is to design and manufacture the compressing-cutting device witch has safety and stable performance. The most important core technology, in nano tube manufacturing, is to seam the each end of tube with appropriate pressure and to cut it off into the two part safely not to leak injected medium. Since the compressing pressure and the cutoff speed make the quality of nano tube, they are very important. This study will show the processes of design and manufacturing of compressing-cutting device.
Study on the Die Design ＆ Manufacture for Electric motor Terminal of HEV
Choi, Kye-Kwang ; Kim, Sei-Hwan ; Cho, Yun-Ho ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5398~5404
DOI : 10.5762/KAIS.2011.12.12.5398
Environment-friendly vehicles using electricity vary, but electrical motor, battery, BMS, inverter, converter, etc., are the core technologies. This research paper deals with the die design and manufacture of the terminal part, one of the key parts of the electrical motor. This research sought to introduce problems such as assembly defect, correction of the R-part shape, correction of the location between holes, etc., in the process of manufacturing the electrical motor terminal die and to produce final products by correcting the problems that were tackled herein.
The effect of Heat input and PWHT on the microstructure and mechanical properties of HSB600 steel weldments
Koh, Jin-Hyun ; Kim, Nam-Hoon ; Jang, Bok-Su ; Ju, Dong-Hwi ; Lim, Young-Min ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5405~5411
DOI : 10.5762/KAIS.2011.12.12.5405
The effects of heat input (1.5~3.6 kJ/mm) and post weld heat treatment (PWHT,
, 40hr.) on the TMCP HSB600 steel weldments made by GMAW process were investigated. The tensile strengths and hardness of as-welded specimens were decreased as heat input increased, but CVN (Charpy V-Notch) impact energy did not show any differences. The fine-grained acicular ferrite was mainly formed in the low heat input while polygonal and side plate ferrites were dominated in the high heat inputs. Meanwhile, tensile strength and hardness of PWHT weldments were decreased due to the coarsening and globular of microstructure as well as reduction of residual stresses.
Evaluation of Machining Characteristics and Performance Analysis of Air-Lubricated Dynamic Bearing
Baek, Seung-Yub ; Kim, Kwang-Lae ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5412~5419
DOI : 10.5762/KAIS.2011.12.12.5412
The need is growing for high-speed spindle because various equipment are becoming more precise, miniaturization and high speed with the development of industries. Air-lubricated dynamic bearings are widely used in the optical lithographic manufacturing of wafers to realize nearly zero friction for the motion of the stage. Air-lubricated dynamic bearing can be used in high-speed, high-precision spindle system and hard disk drive(HDD) because of its advantages such as low frictional loss, low heat generation, averaging effect leading better running accuracy. In the paper, numerical analysis is undertaken to calculate the performance of air-lubricated dynamic bearing with herringbone groove. The static performances of herringbone groove bearings which can be used to support the thrust load are calculated. Electrochemical micro machining(
) which is non-contact ultra precision machining method has been developed to fabricate the air-lubricated dynamic bearing and optimum parameters which are inter electrode gap size, concentration of electrolyte, machining time are simulated using numerical analysis program.
A Study on the Influences of Technology Sectors Educational Programs Using National Competency Standards on Education Results
Jang, Bong-Ki ; Yang, Hae-Sool ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5420~5429
DOI : 10.5762/KAIS.2011.12.12.5420
The study objectively examined the effects on education results from the educational programs developed by adopting competency units of NCS(National Competency Standards)' technology sectors. The objects of the study are divided to learners and instructors. The learners were set bounds to vocational college students to take a degree and incumbent company workers. Research materials had been collected from April of 2010 to June of 2011. We use test papers and structured questionnaire for studying. And we analyzed by SPSS/WIN 17.0. we examined that student's got 1.4 point out of 3 points in their self-test paper before taking classes, below average grades in understanding contents of learning. And as frequency analysis on the after taking classes performance evaluation 62.48% of them answered they can perform their duties in better ways. On average, the company workers got 1.4 point out 3 point before taking classes. And as frequency of analysis on the performance evaluation 85.45% of them answered the can perform their duties in better ways. After instructors took classes on NCS, they gave highly 5.58 out of 7 poins about learners' job competence. On the whole, the educational programs using NCS had positive effects on education results.
Performance Characteristics of the Electrical Air Conditioning System for the Zero Emission Passenger Vehicle
Lee, Moo-Yeon ; Cho, Chung-Won ; Lee, Ho-Seong ; Won, Jong-Phil ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5430~5437
DOI : 10.5762/KAIS.2011.12.12.5430
The objective of this study is to investigate the cooling performances of the electrical air-conditioning system using electric driven scroll compressor for zero emission passenger vehicles. This air conditioner with air source was used R-134a as a refrigerant and installed in a real zero emission passenger vehicle for tests under various driving conditions. The cooling performance of the electrical air conditioner was affected by driving velocities and conditions of the tested vehicle. The condensing rate of the condenser during driving is better than that of the idle condition. The average cool down temperature in the cabin room decreased on average
with the increase of the outdoor temperature from
. In addition, the cooling performances were sufficient for cooling loads of the tested passenger car under tested conditions.
A Study on the Fabrication of 2700 Series Al-alloy Sintered for Automobile Application
Lim, Tae-Whan ; Jang, Tae-Suk ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5438~5442
DOI : 10.5762/KAIS.2011.12.12.5438
In order to use as weight-reduced sintered parts for automobiles, mechanical properties of sintered compacts of 2712 Al-alloys containing 0, 10, 20, and 33% ceramics, respectively, were investigated in this study. (1)Regardless of ceramic contents, all sintered compacts possessed 4~7% pores. (2)After aging the compacts sintered for 12 minutes, tensile strength of the 2712 Al-alloys containing 0, 10, 20, and 33% ceramics was 165, 260, 256, and 166 N/
, respectively, whereas those aged after sintering for 30 minutes exhibited the tensile strength of 186, 229, 219, and 202 N/
, respectively. In addition, the 2712 sintered compact containing 10% ceramics showed the maximum elongation of about 3.6%, (3)After aging the 10% ceramic-containing sintered compacts reached a maximum apparent hardness (
) of 97. (4)The minimum wear volume (
) was shown in the 10% ceramic-containing 2712 sintered compact after aging. From these results, the 2712 sintered compact containing 10% ceramics thought to be the most suitable one for the fabrication of aluminum engine part.
Basic Study on the Optimization of Automotive Battery Post Clamp
Choi, Hae-Kyu ; Lee, Evan ; Kim, Choon-Sik ; Kim, Sei-Hwan ; Cho, Jae-Ung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5443~5449
DOI : 10.5762/KAIS.2011.12.12.5443
Battery post clamp has the role to fix each of terminals at electric condenser by connecting with the cable of power source. In this study, optimum design was achieved by reducing the material cost and the weight of vehicle with one part of battery post clamp. Stress and displacement were obtained by optimizing with design variables. The advanced model by the design through this study were compared with the original model. These optimum values can be applied usefully with the manufacturing field of battery component.
Design and Experiment of Automatic Painting Robot Using Permanent Magnet Mobile Robot in Ship Cargo Tank
Han, Seung-Chul ; Kim, Jin-Ho ; Kim, Je-Hoon ; Lee, Sung-Kyu ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5450~5456
DOI : 10.5762/KAIS.2011.12.12.5450
In order to build a ship, painting on ship cargo tank is one of the most dangerous parts as it involves working in high altitudes and a closed ship cargo tank. Therefore, researchers have been developing devices that will enable mobile robots to operate on vertical walls. The wall-climbing robots have been widely used to attach on the wall such as suction types. These types can be utilized regardless of the wall material. However, it is required to adhere and control the suction cups. To moderate this drawbacks, this paper proposes an automatic painting robot that uses a permanent magnet mobile robot. Using the magnetic characteristics, this robot can move on the boat vertically and horizontally even while hanging on the ceiling of the ship cargo tank. Also, we made a prototype to test adhesive force of the permanent magnet wheel and mobile robot as well as the towing capacity and auto-piloting ability.
Study on Cooling Performance Characteristics of Air Conditioning System Using R744 for a Passenger Vehicle
Lee, Ho-Seong ; Cho, Chung-Won ; Won, Jong-Phil ; Lee, Moo-Yeon ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5457~5463
DOI : 10.5762/KAIS.2011.12.12.5457
The objective of this study is to investigate cooling performance characteristics of mobile air conditioning system using R744 as an alternative of R-134a. In order to analyze the cooling performance characteristics of the air conditioning system using R744 for a passenger vehicle, the developed air conditioning system using R744 was applied in a real passenger vehicle and tested under various operating conditions with the variation of gas-cooler inlet air conditions, evaporator inlet air temperatures and compressor speeds. As a result, cooling capacity and coefficient of performance (COP) of the tested air conditioning system decreased with the rise of the inlet air temperature of the gas cooler but increased with the rise of the inlet air temperature of the evaporator. In addition, cooling capacity and coefficient of performance (COP) increased by 42.2 % with the rise of the compressor speed from 900 rev/min to 1800 rev/min, but it decreased by 55.4%.
Development of the Electric Lancing Device and the Lancet to Prevent the Secondary Contamination by Needlestick Injury
Hong, Sung-Chul ; Jang, Seok-Jin ; Kang, Shin-Han ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5464~5468
DOI : 10.5762/KAIS.2011.12.12.5464
This paper deals with the development of the safety lancet and the electric lancing device. The safety lancet, in which a needle and a protective cap become one body, is designed. It is to prevent the secondary contamination by needlestick injury because the needle is always in the protective cap except for a moment of blood-gathering. The electric lancing device powered by batteries is devised to be operated by the moving rod of solenoid hitting the lancet. and to be used after selecting the repeat or the single hitting mode. The impact force by a hitting rod, the expected life of battery and etc. are measured for product development. This lancing device can be also used for the bloodletting device of the oriental medicine.
The ballet dancer's self-management: The mechanism of monitoring and disciplining Space Studies
Lee, Jin-Hee ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5469~5476
DOI : 10.5762/KAIS.2011.12.12.5469
The purpose of this study was to analyze relating with Faucult's disciplinary power which factors influence a dancer's self-management (weight control)Total 10 ballet major undergraduate students of two respective universities in Seoul and Daijon were selected for the research and the chosen method was an interview with them. After the researchers analyzed the interview result, they found out the following several significant results. The first reason that major ballet dancers control their weight is to show their beautiful figures on the stage and to make their appearances look slender in the mirror. Dancers adapt various methods for effective weight management (diet control) such as dietary control, 1 food intake (potatoes, bananas, grapes, etc), physical force to advise or ingest (injection, taking medicines, reflexology, vomiting, etc.) Then, what is the hidden vision that makes such a practice of weight control maintain? The study presents a "mirror" as a tool of control playing a significant role, in terms that the power of discipline functions automatically in a dancer's body. In addition, another constant factor of dancers' weight management is monitoring each other's performance continuously, which is called "synopticon" Symptoms. Lastly, the fact that a question about placing a ruler could function in the continuous practice was also revealed.
Study on Orchestration in John Williams's Film Score "Star Wars-Main Title"
Jung, Kil ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5477~5485
DOI : 10.5762/KAIS.2011.12.12.5477
This study comparatively analyzed the instrumentation and the voicing structure, which were shown in the film music titled "Star Wars-Main Title" by John Williams(1932~), with analytical technique that the writer mapped out, and aimed to discover the progression principle in orchestration based on the results. Also, it applied a functional part-division method that was classified and distributed into 3 functional parts according to auditory cognitive level as for each of functional elements such as the musical element. And, it made it pattern for the vertical structure and the voicing structure in musical instruments, which were distributed to each functional part based on this, and comparatively analyzed the standard point in a change which were shown according to progression of music, namely, the operating technique. As for the results of this study, first, each theme has specific instrumentation pattern. Unity was emphasized by consistently organizing those things in exposition, reprise, and recapitulation of each theme. To reinforce diversity, an attempt was made such as adding and reducing auxiliary instruments in the middle part and the rear part. Second, even in a change of instrumentation pattern by passage in accordance with a change in theme amid each part, the same instrumental group was organized in the middle part, thereby having maintained unity. Third, to strengthen diversity by clause, which is forming each theme, a continuous change in voicing pattern was created by adding or omitting a part. Fourth, the voicing concentration was maintained the structure of "thinness-thickness" in the whole musical piece. However, in part 2 that is repeated theme 3, diversity was pursued with a unique change of "thickness-thickness." Fifth, in part 4 that is indicated theme 4, the other diversity was intensified with the inverted range in the front part and the middle part. Accordingly, based on the conclusions that were indicated in this work, it is desired to be conducive to understanding the horizontal consideration and the progression principle of orchestration.
U-Learning Scheme : A New Web-based Educational Technology
Kim, Hye-Jin ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5486~5492
DOI : 10.5762/KAIS.2011.12.12.5486
This paper presents a model of ubiquitous learning environment system based on the concepts of ubiquitous computing technology that enables learning to take place anywhere at anytime. This ubiquitous learning environment is described as an environment-friendly learning scheme that supports students' learning using digital media in geographically distributed environments. The u-learning model is a web-based e-learning system that could enable learners to acquire knowledge and skills through interaction between them and the ubiquitous learning environment. Education is happening all around the student but the student may not even be conscious of the learning process. Source data is present in the embedded objects and students do not have to do anything in order to learn. The communication between devices and the embedded computers in the environment allows learners to learn in an environment of their interest while they are moving, hence, attaching them to their learning environment.
The Effect of Emotional Intelligence on Organization Communication Satisfaction and Job Satisfaction
Han, Sang-Young ; Lee, Young-Mee ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5493~5499
DOI : 10.5762/KAIS.2011.12.12.5493
The purpose of this study was to investigate the relationship among emotional intelligence, organizational communication satisfaction and job satisfaction. The subjects were 150 nurses who work for a university hospital in Seoul. The data were collected using self-report questionnaire and analyzed using the SPSS Win 17.0 program. In result, The degree of emotional intelligence was order to regulation of emotion, use of emotion, other's emotion appraisal, self emotion appraisal. Job satisfaction were significantly correlation between emotional intelligence and organizational communication satisfaction. And The higher job satisfaction was showed the higher emotional intelligence and organizational communication satisfaction. Therefore, To increase job satisfaction will be work out a strategy highly emotional intelligence and organizational communication satisfaction. It is need to improve the nurse's organizational satisfaction and base on the program development.
The Policy Implications of the International Technological Cooperation in EU region investigating in view of the transaction Cost Theory
Kim, Jin-Suk ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5500~5508
DOI : 10.5762/KAIS.2011.12.12.5500
The purpose of this study is to find out the policy implications regarding the EU FP and EUREKA which consist of the main parts in the midst of the international technological cooperation with EU region that our government is implementing. This study consists of five chapters in all. The present situations of the international technological cooperation in EU region were investigated in chapter two. Successively, the theoretical background regarding the policy implications for the international technological cooperation in EU region was provided in chapter three. As the theories establishing the bases at this point, there are network and transaction cost theory. The research methods were provided in chapter four, and through the policy case study of our government's international technological cooperation in EU region, the theoretical establishment developed in chapter three was carried out in chapter five. Subsequently, conclusions and suggestions were drawn in chapter six.
A study on the Health Status, Social Support and Acculturative Stress of Filipino Marriage-Migrant Women
Jaung, Ae-Hwa ; Kim, Hye-Jin ; Jeong, Hyun-Ja ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5509~5517
DOI : 10.5762/KAIS.2011.12.12.5509
Purpose: The aim of the study was to identify the health status and social support of international married women according to acculturative stress. Methods : Filipino marriage-migrant 110 women participated in the study, lived D city and C city from December 2009 to June 2010. Results: The average score of health status was 83.47. The average score of social support was 3.48. The average score of acculturative stress was 2.37. Health status were significantly associated with age, years living in Korea, way of marriage and Korean friends. Social support was associated with age, way of marriage and Korean friends. Acculturative stress were associated with age, years living in Korea and way of marriage. According to acculturative stress level, acculturative stress had a significant impact on health status and social support. Conclusion: These results may contribute to a better understanding of health status, social support and acculturative stress of international married women. These findings are basis to development of health management intervention program for international married women.
Staticposture stability evaluation of female elderly using stability evaluation device
Kim, Tae-Hyung ; Yi, Jae-Hoon ; Oh, Seong-Geun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5518~5524
DOI : 10.5762/KAIS.2011.12.12.5518
The purpose of this study is to investigate the change of balance ability on aging by measuring balance ability of elderly females whose age is over 65. The subjects are ten elderly women (the mean age: 71.9) able to walk without assistants, the assistant equipments and drug dependence and ten young healthy women (the mean age: 23.2). We measured stability index (ST), Fourier index (F), weight distribution (WD), weight distribution index (WDI), synchronization index (SI) and fall index (FI) by using Tetrax (Tetra-ataxiometric Posturography). In result, STs and Fs at the low frequency region (F1) represented the significant difference between two groups at all postures with PO (pillow with eye open) exception (p<.01). Fs at the other frequency regions (F2~F8) represented the significant difference between two groups (p<.05). WDI of the elderly women represented the higher values than the young women at all postures but there are the significant difference at PO and PC (pillow with eye closed) only. These results may be due to age-related ability decline of somatesthesia, vestibular organ, central nervous system.
The Effect of Neurofeedback Training on Attention and School Achievement Motivation of primary
Ahn, Sang-Kyun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5525~5530
DOI : 10.5762/KAIS.2011.12.12.5525
This study was to examine the effectiveness of neurofeedback training by observing the pre and post brainwave measurement results of about 50 (experimental group 25. comparative group 25) subjects who have shown attention and school achievement motivation. The study took place at neuro-training center B, in between the months of Jun. 2010 and Dec. 2010. The objective of this study was to prove its scientific effect through experimentation. As the brainwaves are adjusted by time series linear analysis. The result confirmed the differences of both attention quotient, brain quotient and school achievement. The result of the study suggest neurofeedback technique's possibility in positively affecting the subjects' attention and school achievement motivation.
The Effectiveness of Learning Performance on Supplementary Learning Tool based on Blog using Learner-Centric UI/UX Design in Higher Education
Bae, Ji-Hye ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5531~5540
DOI : 10.5762/KAIS.2011.12.12.5531
The Learning Models including the design principle about web 2.0 use in education has been recently presented. In types of web 2.0 tools, blogs are the best tool that reflected the trends of web 2.0 and these are able to share a lot of information and contents. To invent new learning methods involving web 2.0, this study aims to get the results about effectiveness of learning performance on a supplementary learning tool based on blog using learner-centric UI/UX design in higher education. As a study tool, installation-type blog that can be designed as user-centric system is applied to experimental environment. This study presents the conclusion that supplementary learning tool based on blog using learner-centric UI/UX design influences on learning achievement and learning flow through the analysis of questionnaire results of learners, learning evaluation score of learners and assignments evaluation score of learners.
Relationship Self-control, Stress, Loneliness among University Students
Lee, Young-Mee ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5541~5549
DOI : 10.5762/KAIS.2011.12.12.5541
The purpose of this study was to investigate the relationship self-control, stress, loneliness among University Students, to provide the basic data for prevention of suicide occurrence. Methods: The subjects of this study were 1,253 university students. The collected data was analyzed using descriptive statistics,
-test, t-test, Pearson correlation coefficient and stepwise multiple regression with SPSS 17.0 Program. Results: The degree of the suicide attempt was 13.6%. The reported scores for self-control, internet addiction, stress, self-efficacy, anxiety, loneliness were 69.9, 42.5, 86.4, 48.2, 46.2, 40.1, respectively. The degree of suicide attempt was significantly different according gender, religion, parents status, family economic status, living, friendship, exercise, alcohol drinking, loneliness, state anxiety, stress, self-control, and internet addiction. The influential factors affecting suicide attempt were parents status, internet addiction, gender, exercise, and loneliness, which explained about 5.5% of the variance. Conclusions: These result suggest that earlier screening and suicide prevention programs for university students will be helpful in preventing suicide attempt. Future studies need to be pursued to find various variances for suicide attempt for university students.
The Influence of Management's Leadership Style on Employee's Turnover Intention
Chun, Je-Ran ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5550~5557
DOI : 10.5762/KAIS.2011.12.12.5550
These days, the hospital management are paying more and more attention to the issue about the increasing employee's turnover ratio in hospital. Such issues are very important because the high turnover ratio reduce the productivity and morale of remaining workers, and means the unavoidable drainage of the accumulated know-how and technology of the hospital to the outsides. The result of such a negative development means the loss of competitive advantage compare to other hospitals. The purpose of this paper is to investigate how the management's leadership style influence on the job-satisfaction for the employees and the employee's turnover intension. At this time we will refer the effect of the hospital brand image as moderator. The result of this study could present the guide line to the hospital managers about the desirable leadership style to enhance the employee's productivity and also to reduce the turnover intention ratio.
Control-Ownership Disparity and R＆D Investment
Choi, Hyang-Mi ; Cho, Young-Gon ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5558~5563
DOI : 10.5762/KAIS.2011.12.12.5558
Using longitudinal data of 108 firms in large business conglomerates from 2001 to 2009, this study examines the impact of controlling shareholders' control-ownership disparity on R&D investment. The study finds that control-ownership disparity is negatively related to R&D intensity. This empirical result suggests that controlling shareholders' control rights in excess of ownership rights incent controlling shareholders' expropriation for their private interests, leading to decreased R&D investment which enhances firm value in the long term.
M-Learning Application for Ubiquitous Learning Based on Android Web Platform
Kim, Hye-Jin ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5564~5569
DOI : 10.5762/KAIS.2011.12.12.5564
In this paper we introduced Augmented Reality (AR) on Android platform for ubiquitous learning (u-learning). Android is breaking new ground for mobile computing and open technologies. Android is versatile as it is not limited only to mobile phones, but it can be installed on various devices. Android gives developers the opportunity to leverage their development skills, while also building an exciting and active community. Augmented Reality (AR) is going to be the future of most apps; all it takes is a decent processor, a camera, a compass and a GPS, all of which are becoming increasingly common on smart phones. Through AR we can have educational tools that provide individuals with total flexibility to receive, send, and review training and detailed product information through an increasingly ubiquitous web-enabled communication device. In this paper, we proposed Augmented Reality for Species Identification using Android Smartphone with augmented reality in species determination. This study is appropriate in the field of Biology. This is useful in outdoor experimental activities of the students. Like for example while they are visiting the zoo, botanical garden and etc.
A Study on the Attitudes of Women Immigrants toward the Elderly
Park, Ji-Young ; Lee, Chang-Seek ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5570~5577
DOI : 10.5762/KAIS.2011.12.12.5570
This study was carried out to analyse the differences in the attitudes toward the elderly according to the characteristics of women immigrants, and identify the variables to predict the attitudes toward the elderly. The participants were 592 women immigrants sampled from six cities and one county. The major results of the study were as follows. Firstly, there were significant differences in the attitudes toward the elderly depending on age, residential area, spouse's educational level, family income, hope to support homeland's parents, and contact with homeland's family. Secondly, the characteristics related with Korean family explained the largest portion of the attitudes toward the elderly, and predictors of the attitudes were age, residential area, family income, and hope to support homeland's parents.
An Effects of Student-teaching in Kindergarten through Educational Diary on Pre-service Teacher Efficacy, Teacher's Educational Belief and Organizational Health
Kim, Jong-Han ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5578~5587
DOI : 10.5762/KAIS.2011.12.12.5578
The purpose of this study is to confirm how keeping a educational diary in which no feedback is given in the teaching practice in kindergartens affects a teacher efficacy and the educational belief of preschool teachers-to-be as well as the organizational health of kindergartens to practice according to the way teachers feel. With this aim, the study aimed at 34 seniors at the Department of Early Childhood Education in the four-year college in Chungnam. The study conducted this experiment using the nonequivalent control group pretest-posttest design, and carried out a
analysis and a t-test according to the data. Concerning the research results, first, keeping a educational diary of teaching practice affirmatively affected a teacher efficacy. Second, it did not significantly affect a teacher's educational belief. Third, it did not significantly affect the organizational health of the kindergarten to practice according to the ways teachers-to-be feel. This study is meaningful in that keeping a reflective journal in which feedback by a guidance teacher for practice becomes the basic proposition may be replaced with the keeping of a diary of practice at the level of practicality. This means that a teacher's sense of efficacy may improve simply by keeping a educational diary of teaching practice without feedback by a guidance teacher.
Measurement of Cardiac Function Improvement by Auricular Acupuncture Applying Speech Signal Analysis
Kim, Bong-Hyun ; Cho, Dong-Uk ; Han, Kil-Sung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5588~5593
DOI : 10.5762/KAIS.2011.12.12.5588
In this paper, measure of change the speech analysis parameter by stimulating ears blood points corresponding to cardiac. To do this, we collected voice of before and after a stimulation corresponding points to ears to select normal heart having 10 subjects. We analyzed changes before and after corresponding points to ear in cardiac to apply Jitter, the second zFormant Frequency Bandwidths related to heart of elements of voice analysis. As a result of us experiment, we were able to analyze correlation of voice with cardiac according to corresponding points to ears decreased values of Jitter, the Second Formant Frequency Bandwidths of 90% of subjects. Finally, the effectiveness of proposed method is demonstrated by several experiments.
The Effect of HR Department's Strategic Role and IS Utilizing Capability on Customer Relationship Competency
Han, Su-Jin ; Kang, So-Ra ; Kim, Yoo-Jung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5594~5600
DOI : 10.5762/KAIS.2011.12.12.5594
Even though many studies have showed that competence is positively related to organizational performance, few studies have attempted to find out the process of competency - performance. This study focuses on the organizational factors to explore their effect on the competence of customer relationship. Based on the data collected by KRIVET and the Ministry of employment and labor, strategic role of HR department and information systems are examined. As well human resource competency is investigated as a mediating variable. This study used surveys targeting department managers and executive members in firms and sample size was 1086 after cleaning the dataset by deleting all the cases with many missing values. The findings show that strategic role of HR department and information system has an influence on human resource competency, significantly. In addition, the human resource competency affect customer relationship competency, positively. Implications and directions for future research are discussed.
Digital Divide in Internet Access and Internet Usage in Korea
Ju, Young-Wan ; Kim, Yoo-Jung ; Cho, Chang-Hyung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5601~5613
DOI : 10.5762/KAIS.2011.12.12.5601
The purpose of this paper is to better understand the socio-economic differentials of Internet access and use. Data from '2008 Korean Internet usage behavior' were used to conduct logistic regression analysis. The findings show that there are significant socio-economic(age, gender, educational attainment, employment situation, and Internet access type) disparity in Internet access(Internet access at home, broadband Internet access). Also socio-economic variables enter in as statistically significant in most specifications for Internet use intensity (Intensive internet use, frequent internet use, less frequent internet use). The gender, household income and education attainment explanations for large differential in Internet use intensity are generally very similar. It is shown that age, education attainment and household income level cause a large digital divide on Internet service use(information use, communication and community use, e-commerce use, Internet banking use).
An Analysis on the Preference Factors of Garden-Housing Consumers
Kim, Jin-Sep ; Lee, Chan-Ho ; Choi, Gil-Hong ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5614~5621
DOI : 10.5762/KAIS.2011.12.12.5614
The purpose of this thesis is to derive the demand expediting measures of the garden-housing site suitable to the Pusan metropolitan region through understanding the characteristics of the preference based on the investigation of the demand. From the empirical study of the thesis, we developed the following demand expediting strategies of the garden-housing site. First, the development concept should be focused on the market demand and community building. Second, the garden-housing site has to be developed near the existing urban areas and the site must have the convenient facilities and infrastructures. Third, community building concept should be applied in the site design.
Design of Experiment and Analysis Method for the Integrated Logistics System Using Orthogonal Array
Park, Youl-Kee ; Um, In-Sup ; Lee, Hong-Chul ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5622~5632
DOI : 10.5762/KAIS.2011.12.12.5622
This paper presents the simulation design and analysis of Integrated Logistics System(ILS) which is operated by using the AGV(Automated Guided Vehicle). To maximize the operation performances of ILS with AGV, many parameters should be considered such as the number, velocity, and dispatching rule of AGV, part types, scheduling, and buffer sizes. We established the design of experiment in a way of Orthogonal Array in order to consider (1)maximizing the throughput; (2)maximizing the vehicle utilization; (3)minimizing the congestion; and (4)maximizing the Automated Storage and Retrieval System(AS/RS) utilization among various critical factors. Furthermore, we performed the optimization by using the simulation-based analysis and Evolution Strategy(ES). As a result, Orthogonal Array which is conducted far fewer than ES significantly saved not only the time but the same outcome when compared after validation test on the result from the two methods. Therefore, this approach ensures the confidence and provides better process for quick analysis by specifying exact experiment outcome even though it provides small number of experiment.
Measurement of Improved Learning Outcomes using Job Assignment Teaching Method
Kim, Sang-Kyun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5633~5638
DOI : 10.5762/KAIS.2011.12.12.5633
Kim(2011) showed that the team-based teaching method which is focusing on the individual job assignment solves the backlash effects of peer-evaluation method and suggested that it should be studied if the job assignment teaching method does not worsen the learning outcomes. To analyse the learning outcomes of the job assignment teaching method is the purpose of this paper. This paper evaluates the improvement of the learning outcomes which are resulted from a variance of education style that each member of project team was given his specific task. Firstly, all the students evaluate a learning satisfaction and quality of outcomes by themselves. Secondly, an instructor and some professionals evaluate all the outputs. The results showed that the learning outcomes evaluated by students and instructors are improved significantly. The suggested method in this paper, which focuses on the job assignment of team project, could improve the learning outcomes of team project in engineering education.
Influence of Bias and Multicultural Attitude on Multicultural Efficacy in Elementary Students
Kim, Young-Tae ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5639~5647
DOI : 10.5762/KAIS.2011.12.12.5639
The purpose of this study was to analyze the influence of bias and the multicultural attitude of elementary schoolchildren on the multicultural efficacy and to seek for the right direction of multicultural education in elementary school. To attain this purpose, this study asked 416 elementary schoolchildren to questions in Jeonbuk Province. The results are as follows. First, there is a significant difference on bias, multicultural attitude, and efficacy to gender and grade. Second, there is a meaningful correlation among bias, multicultural attitude, and multicultural efficacy. Third, the elementary schoolchildren's bias has a significant influence on the multicultural attitude and efficacy. Fourth, the elementary schoolchildren's multicultural attitude exercises a meaningful effect on the multicultural efficacy. According to this survey, a variety of multicultural programs for the elementary schoolchildren are needed to develop and apply in substance at the level of their eyes. In addition to that, a diversity of studies are needed constantly for making the elementary schoolchildren get some positive understanding on various cultures.
State of Education on the Use of Oral Hygiene Supplies among Dental Prosthesis Mounted
Moon, Hee-Jung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5648~5654
DOI : 10.5762/KAIS.2011.12.12.5648
The purpose of this study was to examine the state of oral health control education experiences among dental prosthesis users. The subjects in this study were 267 adults who were aged between 18 and less than 65 and resided in Seoul and Gyeonggi Province. A survey was conducted from March to June, 2011, and the statistical package SPSS 11.5 was employed to analyze the collected data. The findings of the study were as follows: As for the state of education on the use of oral hygiene supplies, The unmarried respondents considered the use of oral hygiene supplies to be more conducive to oral health than the married ones. The respondents aged between 18 and 39 considered the use of dental hygiene supplies to be more beneficial to oral health than those aged between 40 and 64, and the former deemed it more absolutely necessary to use oral hygiene supplies than the latter). Those who used oral hygiene supplies viewed the use of oral hygiene supplies as more conducive to oral health and considered it more absolutely necessary to use oral hygiene supplies. The respondents expressed higher satisfaction with education on how to wash prosthesis and how to choose oral hygiene supplies. The above-mentioned findings illustrated that the dental prosthesis users were well aware of oral hygiene supplies, and that their satisfaction level with related education was not high in comparison with their awareness of oral hygiene supplies. Therefore dental institutions should provide more authentic education for dental prosthesis users.
Relationship among safety accident, impulsiveness and maternal child-rearing attitude of elementary students
Jung, Do-Young ; Lee, Young-Mee ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5655~5662
DOI : 10.5762/KAIS.2011.12.12.5655
This aim of the study intended to investigate the relationship among safety accident, impulsiveness and maternal child-rearing attitude of elementary students. The study was also done to acquire basic information on safety education program to help students be more aware of safety. A research was conducted from November 15 to 24, 2010 by means of self-report questionnaires distributed to 558 elementary students. Safety accident occurrence of subject is 51.3%, and the most frequent place was on school and home around. The safety accident occurrence was statistically significant difference according to students' gender, grade and the level of school life attitude. The safety accident occurrence correlated positively with authoritarian control, overprotection, and achievement, as defined maternal child-rearing attitude, and not with impulsiveness. The results of this study indicate that safety education program are needed to prevent the safety accidents, and to change the maternal child-rearing attitude of elementary students.
Determinants of Financing Decisions of the KOSDAQ Firms
Guahk, Se-Young ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5663~5670
DOI : 10.5762/KAIS.2011.12.12.5663
This study performed empirical analyses of the static trade-off theory and the pecking order theory which explain financing behavior of firms. The results of regression analyses using the data of 762 listed non-financing firms on the KOSDAQ market from 2000 to 2010 have shown mixed evidences supporting either the trade-off theory or the pecking order theory. Specifically, as the effective tax rate and the firm size increases, debt ratio increases, which is consistent with the trade-off theory. However as the growth opportunity and the profitability increases, debt ratio decreases, which is consistent with the pecking order theory.
The Predictive Power of Implied Volatility of Portfolio Return in Korean Stock Market
Yoo, Shi-Yong ; Kim, Doo-Yong ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5671~5676
DOI : 10.5762/KAIS.2011.12.12.5671
Volatility Index is the index that represents future volatility of underlying asset implied in option price and expected value of market that measures the possibility of stock price's change expected by investors. The Korea Exchange announces a volatility Index, VKOSPI, since April, 13, 2009. This paper used daily data from January, 2002 through December, 2008 and tested power of Volatility index for future returns of portfolios sorted by size, book-to-market equity and beta. As a result, VKOSPI has the predictive power to future returns and then VKOSPI may be determinants of returns. Also if beta is included when sorting portfolio, the predictive power of VKOSPI is stronger for future portfolio returns.
A Study of the Effects of the Hip Angles and Kinesio-taping on Lumbar extension strength in healthy adults
Lee, Jae-Hong ; Kwon, Won-An ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5677~5683
DOI : 10.5762/KAIS.2011.12.12.5677
The purpose of this study was to determine the effects of hip flexion angles and Kinesio-taping on lumbar extension strength. Forty healthy participants(male=20, female=20) were volunteered for this study. It was used to measure lumbar extension strength with the back strength dynamometer in five angles(
hip flexion). It was used to estimate and compare back extension strength with independent t-test, paired t-test, correlation analysis and ANOVA. The results of this study were as follows; First, lumbar extension strength was the most achieved at
hip flexion in male and female(p<0.05). Second, lumbar extension strength was showed a statically increase(p<0.05) in
(except male) after appling taping. These results proposed to us the conclusion that back muscle strength was influenced by hip flexion angles and Kinesio-taping in the lifting work.
The Effect of Constraint-Induced Movement Therapy(CIMT) With Cognitive-Perceptual Training on Upper Extremity Function of Stroke Patients With Mild Cognitive Impairment
Kim, Hun-Ju ; Shin, Joong-Il ; Kam, Kyung-Yoon ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5684~5691
DOI : 10.5762/KAIS.2011.12.12.5684
The purpose of this study is to examine effects of constraint-induced movement therapy(CIMT) and/or cognitive-perceptual training(CPT) on the change of hand function in cerebrovascular accident(CVA) patients and to evaluate the change in the amount and quality of use of the affected upper extremity in performing daily living tasks. The subjects of study were 10 patients who had been under rehabilitation for more than three months after CVA onset. They were all determined as mild cognition impairment according to NCSE or MVPT test. For CIMT group, to restrict the movement of the unaffected hand the subjects had been worn modified resting arm-splint in daytime for 4 weeks. For CIMT+CPT group, the subjects were performed CPT with CIMT and control group had been under conventional occupational therapy for the same period. CIMT+CPT group showed significant improvement in simulated feeding, lifting large light objects, and lifting large heavy objects of Jebsen-Taylor Hand Function Test. CIMT group also showed significant improvement compared with control group. The mean changes of the amount of use(AOU) of the affected arm had a statistically significant difference among groups (p<.05). While CIMT+CPT group had the biggest change in the quality of movement(QOM) of upper extremity of the affected side, CTL group showed the smallest change. Both CIMT and CIMT+CPT groups had statistically significant difference in the change in the quality of movement in upper extremity of affected side with CTL group(p<.05), but there was not significant difference between CIMT group and CIMT+CPT group. CIMT performed to the patients of stroke, with mild impairment in cognitive perceptual abilities showed the improvement in hand movement and AOU and QOM of upper extremity in the affected side and the combination of CIMT with CPT showed synergic effects.
A Study on the Differences in Self-perceived Oral Health Levels in Workers at Seoul-Inchon Area
Kim, Sook-Hyang ; Hong, Min-Hee ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5692~5699
DOI : 10.5762/KAIS.2011.12.12.5692
This study aims to determine potential differences in self-perceived oral health levels between blue-collar and white-collar workers. It is based upon questionnaire survey data dating from Mar. 1 to 30, 2011. All the data collected from 200 blue-collar workers and 100 white-collar worker was analyzed using statistical tools like SPSS ver. 19.0. Self-perceived oral health levels were analysed across three sub-factors - physical, psycho-social, and psychological factors - which were confirmed through factor analysis. The psycho-social factor was statistically significant for age and shift work. Self-perceived oral health levels across the three factors were quantitatively correlated except for psychological factors in blue-collar workers. The study found that occupational group affects workers' self-perceived oral health level. The explanatory power of these 4 variables total 51% in blue-collar group. In case of white-collar group, it was found one variable total 30%. Since oral health levels differ between blue-collar and white-collar workers, oral health promotion projects should differentiate between the two groups, and workers with an interest in their tooth for the prevention, yet negligent act because it will keep your personal oral health care in the prevention-oriented oral health promotion.
A Study on the Oral Health Knowledge of Disability Welfare Facilities Teachers in Gimhae
Park, Ji-Hye ; Cho, Mi-Suk ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5700~5708
DOI : 10.5762/KAIS.2011.12.12.5700
This study was conducted to investigate the extent to which the teachers in disability welfare facilities are acquainted with the oral health knowledge. It was compiled by means of the self-administered questionnaire held out by 119 teachers in Gimhae and it conducted in August of 2010. Considered the score of 100 as all the precise answers, the total average score was 46.4(
). Moreover, the heterogeneity of the oral health knowledge among the respondents was revealed that it statistically does not have anything to do with the demographic characteristics. In conclusion, it is urgently required to develop the oral health education in forms of the continuing education, the online education, and the materials of the regular university curriculum - all for the teachers of the disability welfare facilities in Korea.
Utility of Function Classification System in Children with Cerebral Palsy
Park, Eun-Young ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5709~5714
DOI : 10.5762/KAIS.2011.12.12.5709
The purpose of this study was to investigate the utility of function classification system in children with cerebral palsy (CP). For this, relationship among the Manual Ability Classification System (MACS), the Gross Motor Function Classification System (GMFCS), and the functional status (WeeFIM) in children with cerebral palsy form September 2008 to August 2010. The participants was 217 children with CP in this study. The 217 children were evaluated by using the MACS for their hand function and by using the GMFCS for their motor function. The functional status were assessed by using the Functional Independence Measure of Children (WeeFIM). The GMFCS have a significant correlation with total score and domains of WeeFIM (p<.05) There were a significant correlation with total score and domains of WeeFIM (p<.05) except no significancy with communication domain in dyskinesia type. The highest number of participants were in level 1 (20.3) and level 5 (40.6%) for GMFCS. For MACS, the highest number of participants were level 2 (48.8%) and level 5 (16.6%). The function classification of GMFCS and MACS in practice will provide usefulness for assessment of function in children with CP.
Analysis of cognitive factors affecting stroke patient's activity of daily living performance -Using the computerized neurocognitive function test-
Kim, Ji-Youn ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5715~5721
DOI : 10.5762/KAIS.2011.12.12.5715
This research analyzed the cognitive factors affecting stroke patient's activity of daily living performance and suggests the approaches which can contribute to the effective activity of daily living performance in the rehabilitation treatment of stroke patients. In this study, Seoul Computerized NeuroCognitive Function Test (SCNT) and MBI have been performed for 21 patients under extensive rehabilitation treatments, hospitalized in the rehabilitation clinic of A hospital after being diagnosed as a stroke caused by cerebrovascular disorders. To assess the effectiveness of the cognitive factors which affect the stroke patient's activity of daily living performance, activity of daily living performance values were set as dependent variables and 10 cognitive factors were included in the model to carry out analysis of the multiple regression analysis. The results show that stroke patient's activity of daily living performance have statistically significant correlations with divided attention, motor control and selectivir attention. In addition, cognitive factors explained 69.8% of the stroke patient's activity of daily living performance. Consequently, if divided attention and motor control are considered as a focal point of training in the rehabilitation treatment of stroke patients, we can effectively promote the improvement of the activity of daily living performanceroutine activities.
The Effects of Maum Meditation on Anxiety, Self-esteem and Self-actualization for Teachers
Lee, In-Soo ; Kim, Jee-Hee ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5722~5730
DOI : 10.5762/KAIS.2011.12.12.5722
The purpose of this study was to investigate the effects of Maum meditation on anxiety, self-esteem and self-actualization of teachers and this is a one-group pretest-posttest design study. Three times of surveys were carried out for seven nights and eight days including July 25 - August 1, August 1 - 8, 2009 and January 2 - 9, 2010. Before and after Maum meditation, 108 teachers in the faculty training filled out the structured questionnaire. The data were analyzed by SPSS WIN 12.0. The results showed that there was a significant difference in self-esteem of the teachers between before and after Maum meditation(p=.001). The self-actualization of the teachers was also found to be significant before and after the meditation(p=.002). Maum meditation decreased the teachers' anxiety level and improved considerably the self-esteem and self-actualization level. So it is necessary to develop the self-concept questionnaire that can support the mental health promotion intervention program.
The Influence of Sensory and Upper limb function on Activities of Daily Living of Patients with Chronic Cerebrovascular Accident
Song, Won-Il ; Cha, Tae-Hyun ; Woo, Hee-Soon ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5731~5740
DOI : 10.5762/KAIS.2011.12.12.5731
The aim of this study is to evaluate the relationship between sensory function and performances in the activities of daily living in chronic CVA patients. One-hundred and thirty-eight CVA patients, who experienced their CVA more than 6 months ago, were recruited. Their sensory, motor and cognitive functions, as well as performances in activities of daily living were assessed and analysed. The results indicated that Graphesthesia and proprioception of the affected hand of patients with right hemiplegia showed statistically significant correlation with personal hygiene. The motor functions of the unaffected side in patients with left hemiplegia showed statistically meaningful correlation with ADL performances. The correlation between the motor function of upper limb of the unaffected side and the activities of daily living showed statistical significance in both right and left hemiplegia.
Correlation of the Berg Balance Scale and Smart Balance Master System for Chronic Hemiparetic Stroke
Song, Chiang-Soon ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5741~5747
DOI : 10.5762/KAIS.2011.12.12.5741
The purpose of this study was to find correlation between the Berg Balance Scale which is most commonly used and the equilibrium scores from Smart Balance Master System which is used for the test of the balance ability for the patients with chronic hemiparetic stroke to predict their falling risk though examining the postural control. Twenty-two subjects who had first stroke participated in this study. Participants were measured the Berg Balance Scale and the Smart Balance Master System. The study found that there was a significant correlation between the Berg Balance Scale and the equilibrium scores from Smart Balance Master System. And there was no significant correlation at all "eye-closed and sway of surfaces" in the 6 conditions of Smart Balance Master System and there was a significant correlation with over median in the other 5 conditions. The study was uncovered that there was no meaningful correlation between the Berg Balance Scale and "eye-closed and sway of surfaces" because chronic hemiparetic stroke patients heavily relied on their vision to maintain their balance ability and the Berg Balance Scale did not properly exam it. Thus to predict their falling risk in clinical practice for the patients with chronic hemiparetic stroke, it would be more efficient ways for us to consider all the effects of sensory organs with more than one clinical evaluation method.
Importance awareness and Compliance on Patient Safety for Nurses Working in Operating Rooms
Kim, Joung-Soon ; Kim, Ju-Sung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5748~5758
DOI : 10.5762/KAIS.2011.12.12.5748
The purpose of this study was to evaluate the perceived patient safety, type of errors related to patient safety, importance awareness and compliance on patient safety for operating room nurses and to identify factors influencing compliance. Data were collected using a structured questionnaire from 191 perioperative nurses. Data were analyzed using descriptive statistics, t-test, paired t-test, ANOVA, Pearson correlation coefficients, and multiple regression. The perceived patient safety score was 6.3 as moderate level. Types of errors were mostly happened in patient injury (39.8%), counts (18.4%) and infection control (17.5%). The level of compliance on patient safety was significantly lower than that of importance awareness (t=18.01, P<.001). Compliance on patient safety showed significantly positive correlations to importance awareness (r=.56, p<.001). Experience of patient safety education, experience of errors in colleague, job position and working experience in hospital explained 13.9% of variance compliance on patient safety(F=8.407, P<.001). In conclusion, Hospital should develop education program related to patient safety, encourage nurses to manage safety protocol and ensure cultivating patient safety culture in the perioperative practice setting.
The effects of CPR clinical training on CPR performance and self efficacy in nursing students
Kim, Sung-Mi ; Lee, Eun-Joo ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5759~5765
DOI : 10.5762/KAIS.2011.12.12.5759
This study was done to compare the educational effects of two nursing students groups, CPR theoretical and practical education versus CPR theoretical education only. It would be used as a basis for more effective CPR training of future nursing students. The subjects in study were 72 nursing students in D college D city, from august 22 to august 24, 2011. The collected data were analyzed with SPSS WIN 18.0 program for the frequency, percentage,
-test, t-test and paired t-test. On the findings of this study, CPR training improved not only CPR performance but also self-efficacy in the both groups. Especially, the combination with theoretical and practical education was seen as a more effective methods. Therefore, combinational training would be required for more effective CPR training, rather than focusing on training for improving their simple knowledge. Furthermore, it will help nursing students to perform quickly and accurately CPR in unforeseen situations.
A Study on the Change of Gait Temporal Parameter and Ankle Joint Moment in Patients with Achilles Tendinitis
Yu, Jae-Ho ; Lee, Gyu-Chang ; Lee, Dong-Yeop ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5766~5772
DOI : 10.5762/KAIS.2011.12.12.5766
This study was to investigate the change of gait temporal parameter and ankle joint moment between patients with achilles tendinitis and healthy people. Thus, the purpose of this study is to clarify biomechanical change of gait in patients with achilles tendinitis and to find risk factor for prevention of achilles tendinitis. We recruited 20 patients with an achilles tendinitis and 20 healthy people. While subjects shuttled 5 times on 13 m distance with comfortable pace, we examined gait function marker with three-dimensional gait analysis system. All subject outstepped center of forceplate during gait and calculated ankle joint moment using software. Obtained data was analyzed using SPSS 12.0 software. In results, we confirmed that patients with achilles tendinitis showed reduction of extension moment in early initial phase and reduction of flexion moment in mid-stance on hip joint. and reduction of flexion moment in early initial phase and reduction of extension moment in late phase on knee joint. And we identified that patients with achilles tendinitis showed reduction of dorsiflexion moment in early stance phase, maximal plantarflexion moment in mid stance phase, and dorsiflexion moment in late stance phase. Thus, there are biomechanical changes on gait in patients with achilles tendinitis compared to healthy people. And, in clinical settings, they should focus on changes of gait in patients with achilles tendinitis. Further study will be undertaken for the biomechanical changes of patietns with achilles tendinitis.
The Effect on Growth Inhibition of S. mutans by Lotus Leaf and Dandelion Extracts
Chi, Bo-Ram ; Jo, Da-Young ; Cha, So-Young ; Chi, Min-Ji ; Jeong, Hye-Won ; Kang, Kyung-Hee ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5773~5778
DOI : 10.5762/KAIS.2011.12.12.5773
Results regarding the anti-oxidative, anti-allergic, anti-bacterial and anti-cancer effects of lotus leaf and dandelion have been reported through active research on the medical effects of medicine prepared from crude drugs. This paper aimed to examine the anti-bacterial effect of lotus leaf and dandelion extracts on S. mutans by evaluating the colony forming unit and growth curve. In accordance with the growth inhibition rate of S. mutans according to the addition of lotus leaf and dandelion extracts, the higher the extract concentration was, the higher the growth inhibition rate of S. mutans was. This paper therefore verifies that lotus leaf and dandelion extracts have an effect in inhibiting the growth of S. mutans.
A Study on Self-sufficiency for Hospital Injury Inpatients in Korea
Lee, Hee-Won ; Park, Jong-Ho ; Kang, Sung-Hong ; Kim, Won-Joong ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5779~5788
DOI : 10.5762/KAIS.2011.12.12.5779
This study was conducted to comprehend the current status of regional self-sufficiency of Hospital injury inpatients and, based on this, to prepare some measures for improving the self-sufficiency. For this purpose, 2005 & 2008 Patient Survey data, regional medical utilization data of National Health Insurance Corporation, yearbook of Central Emergency Medical Center and evaluation results of emergency medical institutions were obtained. Frequency analysis, cross-tabulation, decision tree and logistic regression techniques were used in the analysis of data. Self-sufficiency in 'metropolitan city/Do' area was lowest for Chungcheongnam-do for the year 2005 and 2008, followed by Gyeongsangbuk-do, Gyeonggi-do and Jeollanam-do. As for the self-sufficiency in 'Si/Gun/Gu' area with regard to local medical supply, for both 2005 and 2008, It was higher when general hospital, district emergency medical center, regional emergency medical center and regional emergency medical institution existed in the residential area. It was also found that, the higher the quality level of local emergency medical institution, the higher the self-sufficiency. It was confirmed that, when promoting the national policy for injury patients, priority should be placed on 'Do' area where the level of emergency medical supply was low, and that enhancing the quality level of emergency medical institutions was helpful for the improvement of self-sufficiency.
The Effect of Vibration Training Pre-eccentric Exercise on Delayed Onset Muscle Soreness of Triceps Surae
Kim, Eun-Suk ; Kim, Mi-Hwa ; Cho, Yu-Mi ; Lee, Wan-Hee ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5789~5796
DOI : 10.5762/KAIS.2011.12.12.5789
This study examined the effect of VT(Vibration Training) on the symptoms of DOMS (Delayed-Onset Muscle Soreness) before induced by eccentric exercise of the left leg triceps surae. Twenty one healthy adult men and women who had not participated in a regular exercise program for the lower extremities were assigned to one of two experimental groups: vibration training group, Control group. We measured the VAS(Visual Analogue Scale), ankle plantar flexor strength, triceps surae circumference, CK(Creatine Kinase) before and after exercise and 24, 48 and 72 hours after eccentric exercise. After inducing DOMS, VAS showed significant differences between groups at a point of time 48 hours, and showed significant differences within groups in accordance with the time of measurement(p<.05). Plantar flexor strength of groups with VT did not show significant difference between groups but, showed significant differences within groups in accordance with the time of measurement(p<.05). Triceps surae circumference of groups with VT did not show significant difference between groups but, showed significant differences within groups in accordance with the time of measurement(p<.05). CK of groups with VT did not show significant difference between groups but, showed significant differences within groups in accordance with the time of measurement(p<.05). As a result of the study, VT prior to eccentric exercise is effective to inhibit pain. So, this method can be suggested to prevent DOMS in doing an unfamiliar activites.
Relation amang Stress, Ego-Resilience, Self-Efficacy, Clinical performance in graduate medical student
Hong, Sun-Yeun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5797~5804
DOI : 10.5762/KAIS.2011.12.12.5797
Recently, the medical education is undergoing system transition from a medical college to a medical graduate school and introduction of performance test in the doctor license state examination. Therefore, To deal with these challenges, it is needed that medical faculty prepare the education programs for considering student's personal characteristics and improving Clinical performance. So, The purpose of this study was to understand relation among Stress, ego-resilience, self-efficacy and Clinical performance in graduate medical student, and for this study, We conducted a survey of 97 medical graduate school students in D city during the period from August 19st to 20st. 2011. The study found a negative correlation between Stress and Ego-Resilience, a positive correlation of stress with confidence at low region in Self-Efficacy. Ego-Resilience correlates positively with CPX at low region in Clinical performance, Preference for difficulty level of the task at low region in Self-Efficacy correlates negatively with OSCE. OSCE and CPX at low region in Clinical performance are positively correlated. Therefore, Stress reduction of students can improve Self-Efficacy, Furthermore, improve ultimately Clinical performance. According to this study, To improve Clinical performance competence, student's personal characteristics should be considered and education programs for self-efficacy and ego-resilience advancement be reflected in curriculum.
The Effect of Low Power Laser Therapy on Facial Skin Melanin and Elasticity
Ahn, Kyung-Min ; Kim, Ye-Jean ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5805~5810
DOI : 10.5762/KAIS.2011.12.12.5805
This study aims to provide fundamental data to develop anti-aging programs in the aspect of skin care. To attain the goal, manual therapy and low-power laser therapy were conducted separately to 8 women inthe 40's and 50's. They received the facial massage total 8 times twice a week for 4 weeks. According to the result of calculating the average and standard deviation by measuring skin elasticity of the area below their eyes and cheeks and also melanin around eyes and cheeks and conducting comparative analysis, both groups showed significant increase in elasticity and their melanin decreased significantly. The low-power laser therapy showed higher values than the manual therapy both in elasticity increase and melanin reduction; thus, it was analyzed that the low-power laser therapy more highly affects skin elasticity and the amount of melanin in facial skin is greater than that in manual therapy. Therefore, it was analyzed that skin care using low level laser can be significant in anti-aging of facial skin and can be utilized as a program for a new type of skin care.
A Study on Factors Affecting the Oral Health Promotion Behavior of middle school students based on subjective oral health
Lee, Eun-Kyoung ; Cho, Mi-Suk ; Lim, Hyun-Ju ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5811~5818
DOI : 10.5762/KAIS.2011.12.12.5811
This study was carried out in order to be used as basic data in developing oral health program for adolescents hereafter by surveying which influence it has upon oral health knowledge and recognition depending on students' subjective oral health status targeting middle school students. First of all, examining about students' subjective oral health status, the 2nd graders accounted for 36.2% depending on school year, thereby having been indicated to be high in response as saying of being healthy in own teeth. It was indicated that the higher level of brushing teeth after lunch at school leads to the higher response as saying of being healthy in own teeth(p<0.05). The group with response as saying of healthy in own teeth was indicated to be higher in regularly visiting once or twice a year as the period of visiting dental clinic, and was indicated to be higher(p<0.001) in a visit for oral check-up even as for the aim of visiting dental clinic than other groups. Accordingly, the aim is to offer an opportunity of motivation that students will have interest in oral health, by carrying out continuously oral health education, and is also to increase knowledge and awareness level on oral health by allowing them to have positive attitude toward oral health.
A Study on Customer Loyalty and Word-of-Mouth Effect according to Character Trait of Patient in Dental Clinics
Yang, Hae-Young ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5819~5826
DOI : 10.5762/KAIS.2011.12.12.5819
Recently in the dental world, competition in the medical industry has been intensified due to the prolonged economic stagnation, the quantitative expansion of medical institutions, the enhancement of medical consumers'awareness of rights, and the diversity of medical consumer needs. Dental institution management of the difficulties is the requirement for dental institution to ensure competitiveness. So Word-of-Mouth marketing, which creates high marketing effectiveness with low cost, needs to be actively utilized as a new alternative to mass communication marketing. This research is to accurately grasp the target group of dental medical marketing activities through research on the degree of customer loyalty and Word-of-Mouth effects according to character trait of the patients visiting dental clinics, and to present the basic data for Word-of-Mouth marketing strategies from a viewpoint of practical business through presenting Word-of-Mouth promotion factors. To achieve this, questionnaire survey was conducted on 10 dental clinics located in Daegu for 4 weeks from April 11, 2011 to May 6, 2011 and 612 copies of responses to the questionnaires for final data for analysis were obtained. The results of the analysis are as follows. There were no significant differences in the degree of customer loyalty according to character trait of the subjects between the introverts and the extroverts, and the subjects with high market mavens propensity were found to show high degree of customer loyalty (F=5.243, p=.006). In the differences in Word-of-Mouth effectiveness according to character trait, there were greater differences in Word-of-Mouth experiences in the extrovert subjects (
=6.738, p=.006) and the subjects with high market mavens propensity (
=17.251, p=.000). The results of this research clarifies the degree of customer loyalty according to character trait of the patients visiting dental clinics and the differentiated influences of Word-of-Mouth effectiveness, and through this, they will become basic data for presenting ways to establish strategies from the viewpoint of practical business that should be considered in establishing dental medical marketing strategies.
The microstrip antenna for 5GHz
Park, Yong-Wook ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5827~5831
DOI : 10.5762/KAIS.2011.12.12.5827
In this paper, 5Ghz microstrip patch antenna for wireless LAN is designed, fabricated, and measured. To obtain wide bandwidth and high gain, antenna parameters such as patch size(W, L), the length of the slot(C), and the slot width(D) are simulated by HFSS(High Frequency Structure Simulator). From these parameters optimized, the microstrip patch antenna is fabricated using FR-4 substrate. The measured results of the antenna are as follows: The center frequency of 5.2 GHz, insertion loss of -41.17dB, bandwidth of 258MHz, and VWSR of 1.1.
Design of a New Thermal shut Down Protection Circuit for LED Driver IC Applications
Heo, Yun-Seok ; Jung, Jin-Woo ; Park, Won-Kyoung ; Song, Han-Jung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5832~5837
DOI : 10.5762/KAIS.2011.12.12.5832
In this paper, we designed a thermal shutdown block for LED applications using a 1
CMOS process. The proposed thermal shutdown protection circuit has been designed with a shut-off temperature of
and a restart temperature of
which are suitable conditions for LED driver IC. Also, we got SPICE simulation results of the circuit about process variation of the semiconductor fabrication. From simulation data, process variation rate of the proposed circuit are within 7 % which are good results compared with conventional BJT current mirror type circuit. Finally, we confirmed that the thermal shutdown circuit has good thermal protection function within a LED driver IC.
A study on sensing for abnormality of BUS BAR in motor control center
Kim, Sung-Dae ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5838~5842
DOI : 10.5762/KAIS.2011.12.12.5838
The study mainly aims to explore how deterioration of motor control center, namely MCC, and vibration put impact on temperature of bus bar as well as temperature change of bolt-nut joint. The motor control center consists of three internal parts (i.e. R, S, T) which are for motor operation of high capacity. Two dimensional mechanism for measuring temperature was designed and manufactured with infrared temperature sensor. Installing it in inner motor control center enabled researcher to monitor temperature of bus bar as well as amount of change of current regularly. Temperature change of bus bar according to load was primarily examined based on a bolted joint in the experiment. It was clearly verified that temperature change of bus bar was proportional to current consumption. Therefore, installing non-contact two dimensional mechanism for measuring temperature in motor control center would be expected to prevent temperature rise owing to overload current and power outage as well as fire accident which can be triggered by poor electrical contact.
A Study on the Improvements of the Speech Quality by using Distribution Characteristics of LSP parameters in the EVRC(Enhanced Variable Rate Codec)
Min, So-Yeon ; Na, Deok-Su ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5843~5848
DOI : 10.5762/KAIS.2011.12.12.5843
To improve the efficiency of the channel spectrum and to reduce the power consumption of the system in EVRC, the voice signal is compressed and transmitted only when the user speaks to. In addition to this, voice frames are divided into three rates 1, 1/2 and 1/8 and each frame is handled differently. For example, we assumed that the input is silence region if the 1/8 rate is used. In this paper, the sections are firstly separated into the voiced speech signal region, unvoiced speech signal region, and silence region by using distribution characteristics of LSP parameters. Then the paper suggested to encode 1 rate for the voiced speech signal, 1/2 rate for the unvoiced speech signal region, 1/8 rate for the silence region. In other words, traditional way of transmission is used when sending full rate in the EVRC. However, when sending half rate, the voice is firstly distinguished between voiced and unvoiced. If the voice is distinguished as voiced, voice is converted into full rate before the transmission. If it is distinguished as silence, EVRC's basic rate is applied. In the experimental results with SNR, ASDM, transmission bit rate measurement, we have demonstrated that voice quality was improved by using the proposed algorithm.
User Interface Design Model for Improving Visual Cohesion
Park, In-Cheol ; Lee, Chang-Mog ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5849~5855
DOI : 10.5762/KAIS.2011.12.12.5849
As application development environment changes rapidly, importance of user interface design is increasing. Usually, most of designers are clustering by subjective method of individual to define objects that have relativity in design interface. But, interface which is designed without particular rules just adds inefficiency and complexity of business to user who use this system. Therefore, in this paper, we propose an object oriented design model that allows for flexible development by formalizing the user interface prototype in any GUI environment. The visual cohesion of the user interface is a new set of criteria which has been studied in relation to the user interface contents, and is founded on the basis of the cohesion of the interface as defined using basic software engineering concepts. The visual cohesion includes the issue of how each unit is arranged and grouped, as well as the cohesion of the business events which appear in the programming unit. The interface will become easier to understand and use if the business events are grouped by their inter-relevance within the user interface.
Moving Object Detection using Gaussian Pyramid based Subtraction Images in Road Video Sequences
Kim, Dong-Keun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5856~5864
DOI : 10.5762/KAIS.2011.12.12.5856
In this paper, we propose a moving object detection method in road video sequences acquired from a stationary camera. Our proposed method is based on the background subtraction method using Gaussian pyramids in both the background images and input video frames. It is more effective than pixel based subtraction approaches to reduce false detections which come from the mis-registration between current frames and the background image. And to determine a threshold value automatically in subtracted images, we calculate the threshold value using Otsu's method in each frame and then apply a scalar Kalman filtering to the threshold value. Experimental results show that the proposed method effectively detects moving objects in road video images.
A Cluster Group Head Selection using Trajectory Clustering Technique
Kim, Jin-Su ; Shin, Seung-Soo ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5865~5872
DOI : 10.5762/KAIS.2011.12.12.5865
Multi-hop communication in clustering system is the technique that forms the cluster to aggregate the sensing data and transmit them to base station through midway cluster head. Cluster head around base station send more packet than that of far from base station. Because of this hot spot problem occurs and cluster head around base station increases energy consumption. In this paper, I propose a cluster group head selection using trajectory clustering technique(CHST). CHST select cluster head and group head using trajectory clustering technique and fitness function and it increases the energy efficiency. Hot spot problem can be solved by selection of cluster group with multi layer and balanced energy consumption using it's fitness function. I also show that proposed CHST is better than previous clustering method at the point of network energy efficiency.
A study of object analysis in safety management zone
Park, Sang-Joon ; Kim, Kwan-Joong ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5873~5877
DOI : 10.5762/KAIS.2011.12.12.5873
In this paper, we propose a study of analysis to the mobility of object such like pedestrian in safety management zone. If unusual situation is detected in safety management zone, it's designed that previous agreed mission will be processed. By human resource, safety management zone cannot be detected continuously so that through the induction of such detection system the reliability of area can be obtained. Hence, in this paper we propose the reaction scheme to detect special situation by object detection. By using sensor based processing system proposed by this paper, the detection of mobility and unusual situation can be implemented.
Secure Steganographic Model for Audio e-Book Streaming Service
Lee, Yun-Jung ; Lee, Bong-Kyu ; Kim, Chul-Soo ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5878~5884
DOI : 10.5762/KAIS.2011.12.12.5878
We present steganographic service model and algorism that fit feature of streaming audio book service in order to hide information of copyright and certificate of it. Secret information is encrypted with random numger by secret key that client and server share, so that increase confidentiality. We made secret data distributed randomly and evenly, and improved throughput by simplifying additional computations considering streaming environment.
Reliability of the Ubiquitous Home-Based Simulator Developed for the Eerror Control
Lee, Si-Heung ; Kim, Hong-Yoon ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5885~5894
DOI : 10.5762/KAIS.2011.12.12.5885
Ubiquitous environment is expected to be result of researches and studies in ubiquitous home base on. However, because of the complexity of the ubiquitous home base on, the realization of error handling seems impossible. In this paper, we present how to detect and recover from these errors for the Ubiquitous Home utilizing a fault simulator developed for the study and through a variety of experiments, results were discussed and analyzed. Base on the said results, future works are also discussed.
Secure Remote User Authentication Scheme for Password Guessing Attack
Shin, Seung-Soo ; Han, Kun-Hee ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5895~5901
DOI : 10.5762/KAIS.2011.12.12.5895
This paper shows that a scheme provided by An is not enough to satisfy security requirements for a user certification using a password-based smart card. In order to compensate this weakness, this study provides an improved user scheme with a hash function and ElGamal signature. This new scheme has some advantages protecting password guessing attack, masquerade, and replay attack as well as providing forward secrecy. Compared to An's certification scheme, this scheme suggests that the effect of computational complexity is similar but the efficiency of safety is better.
Detecting Shot Boundaries of Dynamic Images Using Certainty Factors
Jang, Seok-Woo ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5902~5909
DOI : 10.5762/KAIS.2011.12.12.5902
In this paper, we propose a new method to detect abrupt and gradual shot transitions of video data by using certainty factors. The abrupt transitions denotes cuts and the gradual transitions fade in, fade out, dissolve, horizontal wipes, vertical wipes, Barn Doors, and Iris Rounds. The suggested method first extracts representative features for each shot transition and determines corresponding shot transitions by integrating all the extracted features and inferring adequate transitions. To verify the performance of the proposed shot transition method, experimental results show that the suggested method can detect shot transitions more accurately than existing methods.
A Study on the Determination of Required Fire Protection Thickness Considering Steel Section Shape
Kim, Hae-Soo ; Kang, Jong ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5910~5916
DOI : 10.5762/KAIS.2011.12.12.5910
Surface area of the steel member exposed to fire differs according to type and size of the section and the kind of the member, which shows a big difference in the temperature rise of the steel by fire. The section factor (
/A) is determined by factors such as type, size, and member of the steel and type of the fire protection material, and it is the criteria in determining thickness of the fire protection material. This study showed that the size of the steel increase regardless of the steel type, the section factor decrease. In the results on fire protection thickness of the steel according to the section factor, the efficiency of 1 hour fire protection was lower from 30 to 50% than the criteria. And there is the member, which have the thickness lower the minimum 27% in 2 hour fire protection, but it generally approached in the criteria. In case of H-shape steel, the efficiency of 3 hour fire protection was suitable for the criteria, but rectangular hollow steel section and circular hollow steel section were higher (5.0-17.5%) than the criteria.
A Study on Sustainable Development of Urban Area in Green Belt -Focused on City Development of Sustainable Compact City Method
Chung, Jae-Yong ; Oh, Min-Jun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5917~5930
DOI : 10.5762/KAIS.2011.12.12.5917
This study suggests Compact City type urban development strategies and planning elements with the purpose of sustainable development. The suggestions are based on analysis of the development projects promoted in the cities within Green-Belt. Following are the findings of this study: First, in the late 20th century, Compact-City has been suggested as standard of sustainable urban development in the developed countries, and this promoted urban development plans were presented in detail. Second, The development plans are suggested plan elements by urban environment, space, community, and management. It was classified as an applicable element in Green belt and Compact City type. Finally, after comparing several city development projects (Gwacheon, Uiwang, Hanam), differences and Limitations between the Compact-City type urban development. Considering analysis of this study, urban development projects in Green Belt should be prepared to sustainable Compact city type urban development.
The Effects of Coupling Beam on Lateral Drift of High-rise Buildings
Kim, Jin-Sang ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5931~5937
DOI : 10.5762/KAIS.2011.12.12.5931
The effects of coupling beam, which is generally used in high-rise building structure system as shear wall-coupling beam, on the lateral drift of high-rise buildings are studied in this paper. Six different analytical models, which are combination of two inputs, such as concrete strength and wall thickness, are selected and analyzed on lateral drifts with different stiffness of coupling beams. MIDAS GEN was used for analysis. Calculated lateral drifts were compared with allowable limits(H/400~H/500) proposed by standard CEN EC 3/1, in order to analyze the control evaluation of coupling beams. Calculated x-direction displacements were 68~87 percent of allowable limit(H/500). With increase of wall thickness(100mm) and concrete strength(5Mpa), eight to ten percent and four percent of x and y-direction displacement were decreased individually. About three percent of lateral displacement was increased with 20 percent decrease of coupling beam stiffness and additional 20 percent decrease resulted in additional five to eight percent increase.
A Study on the Training Programs of Space＆Environment as Media for School Education
Reigh, Young-Bum ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5938~5945
DOI : 10.5762/KAIS.2011.12.12.5938
Proper education for the space&environment as a medium for the development of a variety of educational programs can be understood as the necessary training for maintaining sustainable society through the sharing of community lives. In addition, education programs of space&environment as a medium will help school teachers and students to understand the meanings and values contained in the living environment by contributing to the increase of creative culture and responsible social consciousness. In this paper, the analysis will be carried out to understand the current situation of education programs of space&environment of inside the school education in progress in Korea. Major parts of the paper will analyze the meaning and value of space&environment education by looking at the contents and activities of diverse training programs of Finland and UK. Finally, this paper will suggest how to activate collaborative school education on the space&environment by the complement of the ongoing problems found in the analysis of domestic case studies.
A Study of Green Compact City Planning Strategies - Focused on Ulaanbaatar city in Mongolia
Sambuu, Dalanjargal ; Oh, Deog-Seong ; Choi, Joon-Sung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5946~5956
DOI : 10.5762/KAIS.2011.12.12.5946
The purpose of this study is to discourage urban sprawl that optimize the use of natural resources and reduce demand for transportation, energy consumption, and also protect green and blue networks. For this purpose, this study discusses about the Sustainable Development (SD), urban systems toward SD and defines the concepts and the goals of Green Compact City (GCC). It then finds out the basic planning strategies to agree with GCC. Based on these strategies, it reviews the foreign case study, to obtain a mainly significance development of these planning strategies. As well as then conducts a questionnaire survey to experts and residents of Ulaanbaatar (UB) city to obtain a better understanding of the current condition and the most significant planning strategies in UB city. Therefore the basic planning strategies which can more suits in UB city and it could be the GCC is derived from the most complied planning strategies in other developed countries compared with most significant planning strategies in UB city.
A Study on Cone Factors for Northeastern Part of Shiwha Area II:Reliability and Soil Properties
Kim, Dae-Kyu ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5957~5962
DOI : 10.5762/KAIS.2011.12.12.5957
In this study, the values of the four kinds of cone factors(
, and recently proposed
) and the soil properties, for the northeastern part of Shiwha area, were investigated. The measured and calculated undrained strengths, which have been obtained from the various experimental data, were compared with each other, and their relationship with the plastic index was also studied. The strength from the
method was unexpectedly not reasonable and the higher values of cone factors were observed with the larger plastic index.
A Study on the Bahavior and Failure Mechanism of Soil Nailing Walls using Centrifuge Model Tests
Kim, Young-Gil ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5963~5973
DOI : 10.5762/KAIS.2011.12.12.5963
Current design and analyzing methods about soil nailing structures, developed on the basis of results obtained from experiments in laboratory or in field and numerical analyses, have applied different interaction mechanisms between the reinforced nails and the surrounding ground, and different safety factors against failure have been obtained. They might be proper approaches if the assumptions about rigidity of nails and ground conditions are met with actual conditions occurred in field. Otherwise, they would result in designing on analyzing in inappropriate ways so that it is needed to evaluate the validity of them. Therefore, in this research using the Centrifugal Model Testing, numerical parameters experiments about soil nailing structures' behavior and failure mechanism were performed. In the numerical parameters experiments, transmuted nail's length, setting angle, nail's front panel, stiffness variously, and increased the level of gravity until wall model was destroyed. Based on experimental results, we compared the effect, failure mechanism caused from parameters changes. By reviewing and comparing centrifugal model test results and methods currently in use, verified validity of existing methods.
Influence of American and Japanese Architecture on Building the Post-war Korean Contemporary Architecture
Ahn, Chang-Mo ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5974~5983
DOI : 10.5762/KAIS.2011.12.12.5974
This paper is a study to discover the influence of American and Japanese Architecture on Building the post-war Korean Contemporary Architecture by looking through the architectural works of KIM Jongsoo and KIM Swoo-Geun. To overcome the deteriorated Korean architectural production system, these two architects chose different solutions; KIM Jongsoo developed new materials and introduced industrialized production system based on his own research, and KIM Swoo-Geun tried to develope engineering capability via Korea Engineering Consultant Corp. supported by Korean government which led Korean economic development plan. The difference of their solutions was due to their different background; fund of studying abroad, architectural education system in USA & Japan respectively and preferred solutions of personal or national dimension.
A Study on Elastic Buckling Strength of Truss-Stayed Single Column System
Kim, Kyung-Sik ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5984~5989
DOI : 10.5762/KAIS.2011.12.12.5984
The buckling strength of a pin-ended column may be increased significantly by reinforcing it with an assemblage of cross-arm members rigidly connected to the modpoint of the column and stayed members connecting the ends of the columns and cross-arm members. The purpose of the stays and cross-arm members is to introduce restraint against translation and rotation and thereby decrease the effective buckling length of the column. In this study, buckling strengths of the reinforced columns were quantitatively evaluated from analytical solutions and elastic/inelastic finite elements analysis and the results were compared each other. It was found that the reinforcing system may increase the buckling strength up to 8 times compared to ones without reinforcing system.
Kinetics of the Oxidation of Substituted Benzyl Alcohols using 6-Methylquinolinium Dichromate
Kim, Young-Sik ; Park, Young-Cho ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5990~5996
DOI : 10.5762/KAIS.2011.12.12.5990
] was synthesized by the reaction of 6-methylquinoline with chromium trioxide in
, and characterized by IR, ICP. The oxidation of benzyl alcohol using 6-methylquinolinium dichromate in various solvents showed that the reactivity increased with the increase of the dielectric constant(
), in the order: cyclohexene < chloroform < acetone < N,N- dimethylformamide. In the presence of hydrochloric acid(
solution), 6-methylquinolinium dichromate oxidized benzyl alcohol and its derivatives(p-
, H, m-
, m-Cl, m-
) smoothly in DMF. Electron-donating substituents accelerated the reaction, whereas electron acceptor groups retarded the reaction. The Hammett reaction constant(
) was -0.67(303K). The observed experimental data was used to rationalize the hydride ion transfer in the rate-determining step.
A Study on the Characteristics of High Pressure Regulator for Vehicle CNG
Kim, Byeong-Woo ;
Journal of the Korea Academia-Industrial cooperation Society, volume 12, issue 12, 2011, Pages 5997~6003
DOI : 10.5762/KAIS.2011.12.12.5997
To increase the driving distance of a natural gas vehicle, the high pressure of fuel charge is necessary and the development of the device reducing the pressure to suitable pressure for fuel of high pressure. In this study, Pressure characteristics at the pressure regulator, which is very important for gas supply systems for vehicles, are investigated. Numerical simulations are carried out to quantify pressures at regulators for several flow rates and to investigate pressure drop, hysteresis losses at some parts in the pressure regulator. Moreover, this paper presents a new kind of hydraulic simulation which is composed of CNG regulator. Lastly, experiments are carried out to verify the effectiveness of the prosed mathematical simulation with various regulator components as in real working condition.