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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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The Korea Academia-Industrial cooperation Society
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Volume & Issues
Volume 15, Issue 12 - Dec 2014
Volume 15, Issue 11 - Nov 2014
Volume 15, Issue 10 - Oct 2014
Volume 15, Issue 9 - Sep 2014
Volume 15, Issue 8 - Aug 2014
Volume 15, Issue 7 - Jul 2014
Volume 15, Issue 6 - Jun 2014
Volume 15, Issue 5 - May 2014
Volume 15, Issue 4 - Apr 2014
Volume 15, Issue 3 - Mar 2014
Volume 15, Issue 2 - Feb 2014
Volume 15, Issue 1 - Jan 2014
Selecting the target year
Development of a PVDF sensor for detecting over-load and impact on large-scale mechanical structures
Kang, Dong-Bae ; Ahn, Jung-Hwan ; Kim, Gang-Yeon ; Son, Seong-Min ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6399~6405
DOI : 10.5762/KAIS.2014.15.11.6399
An external overload or impact is an important factor affecting the safety of large-scale structures. The proposal of this paper is the development of a system for detecting overload and impulse using a single PVDF film sensor. In large-scale structures, the load causes the structure to be deformed and the impulse generates vibration on the structure. Generally, low frequency deformation or bending of a structure is measured with a strain gauge and the high frequency vibration is detected by an accelerometer. On the other hand, a single sensor that can detect both deformation and vibration has not been developed. In this study, the development of a detection system integrated with a polyvinylidene fluoride (PVDF) film sensor, amplifier, and software was attempted to monitor deformation and impact through a single sensor. The system was verified by the possibility of detecting overload and impulse, and the two filtered signals of the PVDF were compared with a conventional strain gauge and an accelerometer.
Squeal Analysis of Disc Brake Using Analytical-FE Squeal Model
Kang, Jaeyoung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6406~6411
DOI : 10.5762/KAIS.2014.15.11.6406
This paper presents the analytical-FE (finite element) squeal model, which can provide the efficient simulation time and accuracy. The system geometry and the extraction of the vibration modes were constructed using the finite element method. Instead, the friction contact model was derived from theoretical contact kinematics of the rotating disc and the stationary pads. This modeling procedure was incorporated into the perturbed equations of motion based on the finite elements of the system. Throughout the analytical-FE squeal model, the accuracy of linear stability analysis and the simulation time of FE squeal analysis were improved. In addition, the sensitivity of contact stiffness on brake squeal and the mode-coupling mechanism were provided by the system parameter study.
STUDY ON THE PERFORMANCE OF THE SHAPE OF THE AIR-LIQUID EJECTOR DIFFUSER
Jang, Jin-Woo ; Sin, Won-Hyeop ; Park, Young-Chul ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6412~6418
DOI : 10.5762/KAIS.2014.15.11.6412
This paper performed a numerical study of an air-liquid ejector. An ejector is a fluid-transportation device that spouts high-pressure fluid from driving pipes using the kinetic energy of the spouted fluid and increases the pressure through the exchange of momentum with the surrounding gases of the lower pressure. The air-liquid ejector was investigated through steady three-dimensional multiphase CFD analysis using commercial software ANSYS-CFX 14.0. Water as the primary fluid is driven through the driving nozzle and air is ejected as the second gas instead of ozone in real applications. The difference in performance according to the shape of the diffuser of the ejector was examined. The results provide deep insight into the influence of various factors on the performance of the air-liquid ejector. The proposed numerical model will be very helpful for further design optimization of the air-liquid ejectors.
Finite Element Analysis of an EMC Module for Selecting Epoxy
Lee, Joon-Seong ; Hong, Hee-Rok ; Jo, Gye-Hyeon ; Park, Dong-Keun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6419~6424
DOI : 10.5762/KAIS.2014.15.11.6419
The use of the PMP (Protection Module Package) was proposed as a solution for the shorter battery lifetime. The PMP means that a protection circuit consists of a semiconductor single. In this study, basic research was carried out to select a suitable epoxy material of the EMC module through finite element analysis. First, the stress on the external force was compared by the flexural strength analysis. In the following thermal analysis, the temperature change of the EMC module and the internal part was compared using the calculated heating value. Finally, the filling ratio was compared with the injection of the melting epoxy in the EMC module.
Developing a hair dryer using a new invention techniques Inventogram
Han, Jaeoh ; Oh, Sehoon ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6425~6431
DOI : 10.5762/KAIS.2014.15.11.6425
As science advances, the gathering and sharing of information has become easier, and the spreading speed of information is increasing through the internet and smart phones. Enormous wealth creation around the world from the rapid spread of knowledge of products is possible, which can have a significant impact in a country's economic revival. On the other hand, to develop these ideas, many products are difficult for ordinary people to use with the current techniques. Therefore, new techniques to develop hit products are needed. This thesis identified the limitations of previous invention processes or technique, This invention technique was made by finding ideas and fundamentals hidden in the innovative products. The results obtained from the analysis of a kind and pictograms were combined, and symbolized by the present invention technique that would be for anyone to master. Furthermore, a hair dryer that utilizes electromagnetic waves of the inventograms was developed.
Internal Defection Evaluation of Spot Weld Part and Carbon Composite using the Non-contact Air-coupled Ultrasonic Transducer Method
Kwak, Nam-Su ; Lee, Seung-Chul ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6432~6439
DOI : 10.5762/KAIS.2014.15.11.6432
The NAUT (Non-contact Air coupled Ultrasonic Testing) technique is one of the ultrasonic testing methods that enables non-contact ultrasonic testing by compensating for the energy loss caused by the difference in acoustic impedance of air with an ultrasonic pulser receiver, PRE-AMP and high-sensitivity transducer. As the NAUT is performed in a state of steady ultrasonic transmission and reception, testing can be performed on materials of high or low temperatures or specimens with a rough surface or narrow part, which could not have been tested using the conventional contact-type testing technique. For this study, the internal defects of spot weld, which are often applied to auto parts, and CFRP parts, were tested to determine if it is practical to make the NAUT technique commercial. As the spot welded part had a high ultrasonic transmissivity, the result was shown as red. On the other hand, the part with an internal defect had a layer of air and low transmissivity, which was shown as blue. In addition, depending on the PRF (Pulse Repetition Frequency), an important factor that determines the measurement speed, the color sharpness showed differences. With the images obtained from CFRP specimens or an imaging device, it was possible to identify the shape, size and position of the internal defect within a short period of time. In this paper, it was confirmed in the above-described experiment that both internal defect detection and image processing of the defect could be possible using the NAUT technique. Moreover, it was possible to apply NAUT to the detection of internal defects in the spot welded parts or in CFRP parts, and commercialize its practical application to various fields.
Evaluation of the J integral of a CT specimen by FEM
Kim, Won Beom ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6440~6445
DOI : 10.5762/KAIS.2014.15.11.6440
In steel structures, including ships and offshore structures, defects induced during construction or in use causes cracks and damages. Calculation of the stress intensity factor (SIF) K is one method for crack analysis by fracture mechanics approach. In this paper, an evaluation of K was carried out using the J integral. In particular, in this study, a CT specimen was used to calculate the J integral. In the evaluation, 859 nodes and 1618 elements were used for the J integral calculation of the CT specimen by the in-house FEM program. A comparison of the result with the ASTM formula showed that the results from the current research of the J integral was in the 99% coincidence interval. Overall, cracks in this study can be studied satisfactorily by the J integral from the above mesh size.
Sliding Mode Control Based on 3-Loop of a Pneumatic Motor
Kim, Geun-Mook ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6446~6451
DOI : 10.5762/KAIS.2014.15.11.6446
Pneumatic motors are quite attractive for many applications because of their competitive price, light-weight, easy assembly, safety in hazardous areas as well as other features, such as a good force/weight ratio and operation in exceptionally harsh environments. In contrast to these advantages, pneumatic motors have limited use in applications, particularly those requiring a fast and precise response. These undesirable characteristics are due to the high compressibility of air and from the nonlinearities in pneumatic systems. This paper presents the sliding mode controller based on 3-loop(SMCB3L), which increases the load stiffness to control the rotation angle of a pneumatic motor. The characteristics for the step responses and load disturbances of the proposed controller were compared with the conventional PID controller. The experimental results showed that a properly designed SMCB3L is capable of high positioning accuracy within
. Furthermore, the load stiffness of the SMCB3L can be improved 3.5 fold compared to that of PID controllers.
Simulation of the flow characteristics of R1234yf flowing through capillary tubes
Kim, Daeyeong ; Park, Chasik ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6452~6457
DOI : 10.5762/KAIS.2014.15.11.6452
R1234yf has been developed as an alternative refrigerant to R134a, which has been associated with global warming. The capillary tubes as expansion valves control the mass flow rate and balance system pressure in the refrigeration cycle. The present numerical model used the governing equations including the law of conservation of mass, momentum, and energy in a capillary tube. The mass flow rate of R1234yf decreased by 47.0% as the capillary tube length was increased from 1 to 4 m. As the inner diameter of the capillary tubes was changed from 1.3 to 1.7 mm, the mass flow rate of R134a and R1234yf increased by 117.9% and 121.0%, respectively. The mass flow rate of the R134a and R1234yf increased by 28.3% and 29.1% with subcooling increasing from 0 to
. In addition, when the inlet temperature of the capillary tubes was changed from 35 to
, the mass flow rate of R134a and R1234yf increased by 31.0% and 45.4%, respectively.
FEM Analysis of a 38 Person Elevator Brake
Lee, Jong-Sun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6458~6463
DOI : 10.5762/KAIS.2014.15.11.6458
This study performed FEM analysis of a 38 person elevator brake. Recently, an emergency brake was newly developed to improve elevator safety. A 3D design was developed using Solid Works and FEM analysis using analysis code ANSYS. The total deformation, stress and strain were obtained.
Analysis of the shrinkage and warpage of Wafer lens during UV curing
Park, Sihwan ; Moon, Jong-Sin ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6464~6471
DOI : 10.5762/KAIS.2014.15.11.6464
The UV curing method is a popular process for lens molding on a unit wafer. This process, however, has several drawbacks including wafer adhesion during the ejection process after curing, errors in lens shape and wafer warpage due to material shrinkage during the curing process, and lens centering errors on both sides of a wafer. Among these, the lens shape error and warpage are influenced directly by the UV curing process due to factors including the UV radiation uniformity, the degree of cure according to UV intensity, and the shrinkage characteristics of the material. Therefore, a theory is needed not only to understand the change in the material characteristics, such as the shrinkage rate due to the curing reaction, but also to establish a model. In addition, an analysis system is needed to realize the model. This study proposes a new analysis method for the wafer lens molding process by Comsol modeling. This method was verified by comparing the results with those of the actual process.
Study of the Development of Color Cosmetics Package Design Reflecting Art Marketing
Kim, Jin-Young ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6472~6477
DOI : 10.5762/KAIS.2014.15.11.6472
This study examined the trends of an illustration artist's art marketing widening its area in recent years and proposes a design concept of color cosmetics. Art marketing is a type of culture marketing and means marketing through exhibitions, performances and other artistic activities. Free artistic sensibility expression in which the artistic motif is melted into a product beyond the works of a particular artist, and the product, in turn, can be reflected in the canvas, has attracted attention. The works of illustrators are widening their area into the item in life not canvas. This paper proposes the color cosmetics design that reflect art marketing. The main target who proposed the design concept was trend-oriented and in their early to mid-20s with a strong personality, showing a strong tendency of attracting attention and being recognized. To emphasize the design concept of color cosmetics packaging design, the progressive image of the target class was reflected through brilliant and intense color combination. The cultural value and meaning are provided as the artistic mood becomes a part of life.
Study of the Image Design Components of Urban Landscape Media Facade
Yu, Jung-Sun ; Chung, Jean-Hun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6478~6483
DOI : 10.5762/KAIS.2014.15.11.6478
Media facades project images on the external walls of a building as a screen. Such facades can recover the cultural emotions of users tired of a high level of market competition in urban spaces and develop into urban aesthetics and be reinterpreted as an image design as the city becomes a topic as well as the target projected. From a cultural perspective, the artistic possibility and strengthening of publicness of media facades are discussed. One of the considerations is that it should be the medium communicating with the building or surrounding of the projected target. Urban landscape media facades, such as 2014 Gwanghwamun media facade, 2014 Sejong Center for the Performing Arts media facade and 2013 Namsan media facade were compared and analyzed. As a result, four types of image design components could be derived such as motifs, concepts, stories and projection types. Media facade, which is establishing itself as a new technological genre beyond canvas and theater screens, should contain messages, themes and technological advances as a higher level of the urban symbolic art form in the future. This paper derived the components of image design through the comparative analysis of symbolic urban landscape media facade.
Relationship between Appearance Management Behavior and Information Search of Male Workers
Kim, Hye-Kyun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6484~6491
DOI : 10.5762/KAIS.2014.15.11.6484
The human's basic desire for aesthetics, which has existed along with human history, has been more individualized and diversified according to the progress of modern economic social change. In the case of men, who have a relatively higher connection and experience of mass media compared to women, there is a characteristic to apply and utilize information acquisition and share appearance management quickly on the media. This paper classified and arranged the image and characteristics of the modern male image analyzed the relationship between men's appearance management and information exploration. In addition, exploration relation per information medium was considered by dividing the men's appearance management behavior and characteristics into make-up, hair management, skin care, hands and feet care, and plastic surgery. This appears to be useful for the industrial group, e.g. beauty treatment, cosmetics, hospital, etc. as advertisement marketing information.
Activation Plan for Performing Art of the Northern Region of Gyeonggido
Park, Joo-Won ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6492~6501
DOI : 10.5762/KAIS.2014.15.11.6492
The purpose essay, through overall theoretical studies and comparison analysis of a performing art situation, aims to search for the creation and direction of various performing arts and examined the prospect and activation plans for performing arts of the future. The summary of the main contents deducted from this research was as follows. First, branding through unique competitive contents was found only in Northern Gyeonggi-do. Secondly, excellent performing art human resource supply from the locality is an urgent priority. Thirdly, by propelling diversification of performing programs, the performing art consuming activation movement that induces people to participate in the performances was actively developed. Fourthly, the most important thing for the ultimate goal achievement of art policy is excellent human resource development through professional education in each field of art.
Development of an assessment model for the CoP in Educational institutes - towards social network analysis
Hong, Jong-Yi ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6502~6508
DOI : 10.5762/KAIS.2014.15.11.6502
The concept of Communities of Practice (CoPs) has been highlighted as an effective method for knowledge sharing in Knowledge Management (KM) and has been utilized strategically by many organizations. Therefore, the need to diagnose knowledge sharing activities in CoPs has increased. Previous studies of CoP strategies has generally suggested broad guidelines without diagnosing the current knowledge sharing status of individual CoPs. Furthermore, diagnosis methodologies are not connected to the strategic direction and require considerable time and effort to conduct regularly. The purpose of this paper was to develop a sustainable diagnosis framework for identifying knowledge sharing activities in virtual CoPs and to suggest strategies for CoPs-based on the proposed diagnosis framework. Finally, the proposed diagnosis framework was applied to an educational service case.
Needs Assessment of In-service Education on Teaching for School Health Teachers
Choi, Mijung ; Jin, Sangwoo ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6509~6517
DOI : 10.5762/KAIS.2014.15.11.6509
This study examined the needs assessment of in-service education on teaching for school health teachers. The subjects of this study were 504 school health teachers, who were working in G-city and J-do. The data was collected from questionnaires of school health teacher's teaching from Nov. 9 to 23 2013. The data collected was analyzed by frequency analysis and a
-test. The conclusions were as follows. The first priority of the school health teacher's work is 'management of health problems' and the second is 'health education'. A difference was observed between the school levels (p< 0.01). The teaching methods mainly used on health care instruction were lecturing, discussion and practical training. The teaching materials of health care instruction mainly used were ppt, internet video, and textbooks. Most of health care teachers agreed to creativity education but they used creativity education less in practice. Most school health teachers want to in-service education on teaching and the contents of the course are creativity education or storytelling for new teaching.
R&D trends for green catalytic technology developments
Oh, Nak-Kyo ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6518~6526
DOI : 10.5762/KAIS.2014.15.11.6518
The aim of this study was to obtain a complete picture of green catalytic technology developments. The data set for analysis was collected from the data from 4,172 patents, 28,726 technical papers and 548 Government R&D projects. The covering periods were 2001 to 2012 for patents and technical papers, whereas while that for the Government R&D projects were 2001 to 2011. The analysis methodologies consisted of qualitative and quantitative approaches. The patent for catalytic technology has been increasing, even though it was developed some time ago. The increase in patents for catalytic technology has been outstanding since 2008. As a result of the analysis of patents, fuel cell comprised 41.9%, followed by coal liquefaction 23.6%. The analysis of technical papers ranked fuel cell ranked 1st, followed by hydrogen. Fuel cells, hydrogen and coal liquefaction outperformed in green catalytic technological developments. As a result of this study, it was apparently concluded that the speed for the green economy from the fossil fuel-based economy has accelerated. Therefore it will be necessary to prepare for the early realization of a green energy-based economy on a variety of aspects as soon as possible.
The Effect of the Cultural Competence in Multicultural Nursing Education by Action Learning
Kim, Yeon-Soon ; Kim, Jin-Young ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6527~6535
DOI : 10.5762/KAIS.2014.15.11.6527
This research aims is to confirm the effects of cultural competence of an action learning based teaching method in multicultural nursing education. Cultural competence was composed of cultural knowledge, cultural awareness and cultural acceptance. A total of 118 college students were enrolled in this study. Both before and after learning, the students were guided to fill out a questionnaire regarding culture competence. The students from each group studied multicultural nursing by different teaching types: the Traditional Lecture-based Teaching method (TLT) and Action Learning based Teaching method (ALT). Data analysis was carried out by SPSS 21.0. A pre-post comparison within the group was performed using a paired t-test and the comparison between groups was performed using ANCOVA. The results showed that there was a significant difference in the culture competence in both teaching methods. In addition, ALT showed higher cultural acceptance results than TLT; however, there was no difference in cultural knowledge and cultural awareness between the two groups Therefore, ALT should be considered as a teaching method to enhance cultural competence in multicultural nursing education for Nursing students. Further studies on instructional design according to the task types, nursing performance, and the validity of ALT will be needed.
Market Trends Prediction of the Sports Industry
Kim, Hun-Il ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6536~6546
DOI : 10.5762/KAIS.2014.15.11.6536
The aim of this study was to predict the global sports market trend to make developmental and strategic marketing planning for governments, enterprises and scholars. By participating in Delphi, 21 professionals from 12 countries came up with 51 foresights. In addition, the following 7 final results emerged after 3 rounds of discussion. First, integrity issues (e.g., doping and gambling) will increase in the sports industry. Second, the market of youth sports will continue to grow worldwide. Third, the health-oriented sports service will growth, particularly for seniors or people with less wealth. Fourth, the convergence with high-technology, culture and leisure activity will be accelerated. Fifth, mega sports events will receive increasing scrutiny and criticism. Sixth, the leverage of new media (e.g., social media) as well as old media (e.g., TV and magazines) will expand in the sports industry. Finally, globalization, which is similar to the culture phenomenon, will be accelerated in the sports industry.
Motivation for following College Sports Teams' Social Media Accounts
Park, Jae-Ahm ; Dittmore, Stephen W. ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6547~6555
DOI : 10.5762/KAIS.2014.15.11.6547
This study attempted to verify what motivates fans to follow college sports teams' social media and identify the motivational factors that can best predict fans' social media consumption. Confirmatory Factor Analysis (CFA) indicated that previously identified seven motives for online consumption, i.e., information, diversion, socialization, pass-time, fanship, team support, and technical knowledge, are compatible with the use of college sports teams' social media. In addition, a results of multiple regression found diversion, socialization, fanship, team support, and technical knowledge to significantly predict the level of social media consumption while information and pass-time did not significantly affect social media consumption. In particular, socialization had the greatest influence on social media consumption.
Relationship between perfectionism and academic burnout: Focus on the mediating effect of academic stress and academic procrastination
Lee, Jayoung ; Choi, Hyera ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6556~6564
DOI : 10.5762/KAIS.2014.15.11.6556
This study analyzed the relationship of socially prescribed perfectionism, academic burnout, academic stress, and academic procrastination. In addition, this study examined whether academic stress/procrastination has a mediating effect on the relationship between socially prescribed perfectionism and academic burnout. Data was collected from 283 cyber university students and analyzed using the correlation and structural equation model. The results showed that, socially prescribed perfectionism was positively correlated with academic stress and burnout, academic stress was correlated with academic procrastination and burnout, and academic procrastination was also correlated with academic burnout. Using the result of structural equation model analysis, socially prescribed perfectionism was found to enhance academic burnout through academic stress, or increase academic procrastination through academic stress, then resulted in academic burnout. This result suggested that to prevent academic burnout in a socially prescribed perfectionist, it is essential to lower their level of academic stress and prevent them from procrastination.
Marginal Propensity to Consume with Economic Shocks - FIML Markov-Switching Model Analysis
Yoon, Jae-Ho ; Lee, Joo-Hyung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6565~6575
DOI : 10.5762/KAIS.2014.15.11.6565
Hamilton's Markov-switching model  was extended to the simultaneous equations model. A framework for an instrumental variable interpretation of full information maximum likelihood (FIML) by Hausman  can be used to deal with the problem of simultaneous equations based on the Hamilton filter . A comparison of the proposed FIML Markov-switching model with the LIML Markov-switching models [1,2,3] revealed the LIML Markov-switching models to be a special case of the proposed FIML Markov-switching model, where all but the first equation were just identified. Moreover, the proposed Markov-switching model is a general form in simultaneous equations and covers a broad class of models that could not be handled previously. Excess sensitivity of marginal propensity to consume with big shocks, such as housing bubble bursts in 2008, can be determined by applying the proposed model to Campbell and Mankiw's consumption function , and allowing for the possibility of structural breaks in the sensitivity of consumption growth to income growth.
Effects of infant children Mothers' humor and ego resilience on Maternal behavior
Lee, Jin-Wha ; Kang, Eun-Jin ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6576~6586
DOI : 10.5762/KAIS.2014.15.11.6576
This study examined the effects of the mothers' sense of humor, ego-resilience on the maternal behavior. 187 mothers of 24~36 month old children completed the questionnaires. To analyze the data, descriptive statistics, Pearson's co-relation and hierarchical regression analysis were used. The results were as follows. First, concerning the mothers' personal variables, the mean of the sense of humor, ego-resilience, and maternal behavior were relatively high. Second, the mothers' sense of humor and its sub-scales, except as a copying strategy, and ego-resilience had a positive co-relation with the maternal behavior and its sub-scales. Lastly, the mothers' sense of humor and its sub-scales, and ego-resilience were significant variables to influence the maternal behavior. As stated above, the ways were discussed to improve the mothers' sense of humor and ego-resilience.
Study of the Determinants of R&D Cooperation : Empirical Evidence from Korean Manufacturing SMEs
Kim, Hyung-Soo ; Yang, Dong-Woo ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6587~6598
DOI : 10.5762/KAIS.2014.15.11.6587
This study tested the hypothesis from the previous research issues and empirically investigated the determinants of cooperative strategy for technological innovation, using the multinomial logit model. The meaningful conclusions from this study are as follows. First, the characteristics of the company and product are not the significant determinants for cooperative strategy for technological innovation. Second, formal R&D organization characteristics are significant factors in determining the type of cooperative strategy for technological innovation. Third, the support of government is a significant determinant and if a company receives more government support, it is likely to accept public type cooperation. Fourth, the characteristics of industry are significant determinants and if a company belongs to a higher technology industry, it is likely to accept vertical type cooperation with private enterprises. This study analyzed the hypotheses raised in a variety of studies empirically. This paper presents the basis of various studies concerning technological cooperation strategies.
Political Solutions for International Technological Cooperation for Korean Enterprises in the 8
FP of the EU
Kim, Jin Suk ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6599~6603
DOI : 10.5762/KAIS.2014.15.11.6599
Strengthening the competitiveness of Korean Industrial Technology with cooperation from EU enterprises is very important. With regard to the technological cooperation Framework Program (FP) from the EU during the period, 2007 to 2013, the most active participants involved were Germany, England and France. Additional participants were Russia, China, India, and Brazil. Korean participation as a non-EU Member State in this program was low. The aim of this study was to determine effective activation strategies for FP participation by Korean enterprises and institutions. Chapter 2 reports the theoretical background. Chapter 3 presents the methodology of the study. Chapter 4 describes the
FP of the EU in detail. Chapter 5 attempts to find a solution for the optimal participation of Korean firms and institutions in the 8th FP of the EU. Through this paper, a solution for
FP can be found: many Korean enterprises are unaware of the FP. Therefore, it is of the utmost importance to provide information about the characteristics and processes regarding the EU
Education-Training Program for Hotel Employees by Importance Performance Analysis
Park, Jae-Wan ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6604~6612
DOI : 10.5762/KAIS.2014.15.11.6604
The purpose of this study was to provide basic knowledge and a proper education-training program for hotel enterprises. The results are as follows. First, an education-training program was focused on five factors. Service quality, Job, Organization culture, Self improvement, and Language. Second, the Importance Performance Analysis Result show that Keep the Good Work variables are the Customer reception, Food hygiene, Hygienic management, Cooking, First aid, Self development, and Communication. Possible excesses include Customer satisfaction, Business vision, Brand, Prevention of sexual harassment, Multiple cultures. Finally, an education training program should focus mainly on 'Manner', 'Table manner', 'Personal hygiene' and 'Chinese'.
Cognition Levels of the Success Factors for Governmental Support Policies to Small Business Cooperation
Suh, Yong-Sung ; Oh, Sang-Young ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6613~6620
DOI : 10.5762/KAIS.2014.15.11.6613
In this paper, 228 cooperations supported by government were surveyed on the cognition levels of 5 factors for successful policies that support small business cooperation. Goal importance, awareness stage of importance, and current concerning level were scored to each question of factors. Using the results of previous studies, the maturity of each success factor, and the forecast time to mature and maturity of each question were analyzed. The results were compared with the results of a study precedent. Moreover, the changes in the participants' recognition levels were reviewed between before and after government's support. These comparative studies reflect government policies. Despite the government's supporting policies aided on building cooperation positively, the participants still worry about the decreasing government support. To allay these concerns, government policies should be implemented continuously to promote cooperation rather than a one-time support.
Chaos Theory: An Alternative for a Paradigm Shift in the Social Science Studies
Kim, Min Sun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6621~6629
DOI : 10.5762/KAIS.2014.15.11.6621
Social phenomena require the fundamentals of novel scientific epistemology and methodology due to the continual change by complex variables. A systematic understanding of paradigm shifts is also necessary for analyzing the problems currently faced in society. This study presents chaos theory, which was developed from the natural sciences, to discuss the abnormality of modern society that underscores the importance of the chaos paradigm. Chaos theory is applicable to diverse social phenomena that stretches across politics, economics, and sociology. If social science research can appropriately and effectively develop and apply chaos theory, the theory can be utilized as a useful paradigm to reinforce the fundamentals of epistemology and methodology in exploring social phenomena.
Empirical study of the scale economies of office buildings in Seoul
Keum, Sang Su ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6630~6638
DOI : 10.5762/KAIS.2014.15.11.6630
The concerns for higher returns among investors in Korea are increasing as local interest rates lag behind the global market. The aim of this study was to provide a basis for estimating the precise return on investment to private investors and stakeholders of office buildings by identifying the optimal scale estimation of office building space, derived from managerial expenses. The literature on the economies theories of scales were reviewed, and the average administrative costs on an appropriate scale were assessed by cross-analysis and regression analysis using the U-shaped quadratic and cubic function. The findings suggest that the average office building managerial costs are approximately 6-11% according to the region, 10-13% according to the grade, and 8-9% according to size. Corporate-owned buildings represent the highest in terms of the average managerial costs, and there is an approximately 11.5% difference when it comes to outsourcing. In addition, the elapsed year showed that approximately 5.3 years to meet the lowest U-shaped curve of the average managerial cost. The 'Total floor area' variable shows a
-shape as it continue to increase to 72,000-Pyung then decrease gradually. This study presents the fundamental proposition of efficient and practical management of cost, lease and operation for real estate management firms by utilizing LCC.
Improvement Plan for Cadastral Surveying Fee Calculation Process
Hong, Sung-Eon ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6639~6645
DOI : 10.5762/KAIS.2014.15.11.6639
This study was conducted to deduct the facing problems by analyzing the reflected computing environment of a cadastral surveying fee calculation process for all cadastral surveying items and suggest an improvement plan for the process, corresponding to the cadastral surveying environment. An analysis of the problems showed that the current cadastral surveying fee calculation process was complicated compared to other relevant fee calculation processes. Although work process has been improved due to the changes to current cadastral surveying technology and the digital cadastral management system, it has not been reflected. This article suggests simplifying the current universal nine-step process into a four-step process. In addition, the improvement plan for the improved work process with computer files to be applied before and after field surveys is suggested. The cadastral mapping process is divided into four steps to make it suitable for a computing environment and the corresponding process improvement plan is suggested.
Measuring the Maximum Social Welfare Effects of Outlook Information Service for Fruits Sector in Korea
Kim, Bae-Sung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6646~6651
DOI : 10.5762/KAIS.2014.15.11.6646
This study was carried out to find the social welfare effects of agricultural outlook information service for fruit in Korea. The goals of an agricultural outlook information service are to improve the efficiency of the agricultural product market, and stabilize the farmer's income and consumer price. This paper introduces the results of econometric analysis for the effects of social welfare benefits. According to the results of econometric analysis for the citrus industry, the effects of the social welfare benefits were estimated to be 15,228 million KRW on apples (ratio of the total revenue, 1.5%), 3,154 million KRW on pears (ratio of the total revenue, 1.8%), 1,936 million KRW on peaches (ratio of the total revenue, 0.9%), 5,211 million KRW on grapes (ratio of the total revenue, 1.0%), 44,976 million KRW on citrus (ratio of the total revenue, 5.4%), and 2,590 million KRW on sweet persimmon (ratio of the total revenue, 0.8%) in 2012.
Study of the Technology Evaluation of Development of Environment-friendly Controlling Method of Mushroom
Ko, Seong-Bo ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6652~6658
DOI : 10.5762/KAIS.2014.15.11.6652
This study evaluated the economic value of the development of an environment-friendly controlling method of mushroom using IRR and NPV. The environment-friendly controlling method of mushrooms was developed by the national institute of horticultural and herbal science in Korea rural development administration. This technology can be used to improve the efficiency and practicality of cultivation of mushroom. The research results show that the technological value of the development of an environment-friendly controlling method of mushroom was evaluated at 135.4 billion won (average), 182.6 billion won (maximum), and 88.1 billion won (minimum) based on the discount rate of 7.3%. The IRR was 1,958.5% - 4,054.4%, which was greater than the discount rate (6%~10%). The NPV was evaluated at 134.8 billion won (average), 218.1 billion won (maximum) and 87.5 billion won (minimum) based on the discount rate of 7.3%. Therefore, the economic validity of the development of an environment-friendly controlling method of mushrooms was identified by the results of a technology evaluation.
Investigation into the actual condition of the Cultural Welfare System for the Disabled -Focus on a Museum and Art Museum in Youngwol-gun-
Oh, Seung-Ha ; Cho, Sung-Je ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6659~6668
DOI : 10.5762/KAIS.2014.15.11.6659
This study examined the actual condition of the cultural welfare system for the disabled. The survey was completed by 21 public and private museums at a cultural welfare center in Gangwon-do, Yongwol-gun, specialized for museums only between 1 June and 31 July 2014. The study scale questions were analyzed by field surveys in cultural welfare centers and interviewing the museum directors. The results were as follows. First, there were cultural welfare service effects on the controlling culture, art and leisure activities for the disabled. Second, cultural enjoyment improved the quality of life and life satisfaction of the disabled. This study provides a database to improve policy regarding environmental construction, various program developments, visiting performance system development, and supplement and financial support for the disabled audience as a member of society.
Study of the Treatment for Student Co-invention in the Intellectual Property Management Code at Universities
Na, Dong-Kyu ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6669~6675
DOI : 10.5762/KAIS.2014.15.11.6669
An invention produced through research by a professor at a university is an employee invention, and the industrial academy cooperation foundation of the university has the right to obtain a patent. The professor, in return, obtains the right to receive reasonable compensation for that invention. Research was carried out mostly by the cooperation and participation of students rather than the solitary performance of the professor. The contributory portion of the student to an invention can be treated as an employee invention, but occasionally it is considered a free invention. Therefore, the unilateral succession to the right to obtain a patent to the industrial academy cooperation foundation highlights the potential disputes between the university and students in the future. Therefore, in this study, the intellectual properties management codes of 80 universities were reviewed and analyzed for any possible problems and the appropriate directions to the codes' amendments are suggested.
Influence Factors Analysis of Revitalization in The Streets of Seoul City by Attributes of Small Retail Businesses' Classification
Won, You-Ho ; Lee, Joo-Hyung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6676~6684
DOI : 10.5762/KAIS.2014.15.11.6676
This paper analyzed an existing literature review of street environment, density, accessibility, and diversity in terms of not the street level, but also the urban context level. In addition, this paper examined Jane Jacobs' theory (1961) regarding the relevance between the diversity of facilities and increasing volume of pedestrians. To find the explanation ability and significance among variables, this paper employed Enter's method of Regression Analysis in the industrial classification of restaurant business and liquor business. This empirical analysis of both theories of Jacobs (1961) and MacCormac (1983) had a different signification from existing research. Jacobs (1961) suggested the relevance among various facilities for increasing the volume of pedestrians, and MacCormac (1983) explained the different impact by industrial classification. In future research, the subdividing of industrial classification is necessary for a more precise and specific analysis.
Powerlessness, Self-Esteem and Depression on Korean-American Immigrant Elderly
Lee, Hyun-Ju ; Song, Jung-Hee ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6685~6693
DOI : 10.5762/KAIS.2014.15.11.6685
This study was designed to identify the relationships among powerlessness, self-esteem and depression in Korean-American immigrant elderly. The purpose was to provide baseline data for nursing intervention to improve their health. The results showed that depression was significantly correlated with self-esteem and powerlessness, self-esteem was also significantly correlated with powerlessness. Powerlessness was different from the level of education and health conditions. Self-esteem was significantly different to the frequency of family visits. Depression was significantly different from age. 50.0% of depression was explained by powerlessness and self-esteem. This suggests that a higher level of powerlessness and a lower level of self-esteem are associated with a higher the level of depression. In conclusion, to improve the psychological health of Korean-American immigrant elderly, it is crucial to consider age, the level of education and health conditions, and continually manage the levels of powerlessness and self-esteem.
Association between Low Density Lipoprotein Cholesterol and Pulmonary Function among Premenopausal women in their 40s: a Retrospective Cohort study
Ko, Hae-Jin ; Youn, Chang-Ho ; Kim, Seong-Hyun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6694~6701
DOI : 10.5762/KAIS.2014.15.11.6694
The aim of this study was to identify the correlation between low density lipoprotein (LDL) cholesterol and the pulmonary function. This study enrolled premenopausal women in their aged 40s, who visited the health promotion center of a general hospital more than two times. A total of 384 subjects were classified into four groups based on their LDL-cholesterol levels; A, LDL(mg/dL)<100 at both initial and follow-up; B, LDL<100 at initial but
at follow-up; C,
at initial but <100 on follow-up; and D,
at both the initial and follow-up test. The result showed no significant differences in the pulmonary function between the four groups. Multiple linear regression analysis, which was adjusted for age, body mass index, smoking, exercise, and follow-up duration, showed a significant negative relationship between the changes in the LDL and the changes in the
, S.E.=0.029, P<0.001), but not in the
and FVC. In conclusion, there was a significant but weak relationship between the LDL and pulmonary function. Further larger studies will be needed.
Phase Image of Susceptibility Weighted Image Using High Pass Filter Improved Uniformity
Lee, Ho-Beom ; Choi, Kwan-Woo ; Son, Soon-Yong ; Na, Sa-Ra ; Lee, Joo-Ah ; Min, Jung-Whan ; Kim, Hyun-Soo ; Ma, Sang-Chull ; Jeong, Yeon-Jae ; Jeong, Yeon-Gyu ; Yoo, Beong-Gyu ; Lee, Jong-Seok ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6702~6709
DOI : 10.5762/KAIS.2014.15.11.6702
In this study, a susceptibility weighted image (SWI) showed a wrapped phase and a non-uniformity of the rapid susceptibility difference. Consequently, the bandwidth limits at low frequency were improved by applying HPF. From November 2013 to March 2014, a three-dimensional SWI was obtained from patients and compared with the existing images and HPF phase images. The maximum and minimum signal intensity differences and non-uniformity were analyzed. As a result, a high pass filter before and after applying the maximum and minimum of the signal intensity difference was decreased by 274.16% (498.98), and the non-uniformity was decreased by 439.55% (19.83). After applying the HPF, a comparison with the existing phase images revealed the HPF phase images to have high signal and image uniformity of the SWI image. A high pass filter method can effectively remove the non-uniformity and improve the overall image quality.
Factors Affecting Sexual Autonomy among Female University Students
Cho, Gyoo-Yeong ; Kim, Yun-Hee ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6710~6718
DOI : 10.5762/KAIS.2014.15.11.6710
This study examined the factors affecting the sexual autonomy of female university students to provide the basic data for developing an intervention program for sex education. The data was collected from 322 female college students and analyzed with a t-test and multiple regression using the SPSS 21.0 program. The significant factors of sexual autonomy were intercourse experience (
, p=.040), sex knowledge (
, p=.028), permissiveness of sexual violence (
, p<.001), and the perception of unwed pregnancy (
, p=.048). These factors explained 21.7% of the variance in sexual autonomy. In conclusion, there is a need to develop a sex education program to increase sexual autonomy considering the factors affecting sexual autonomy.
Relationships between Self-Control and Addictive Mobile Phone Use by Nursing Students
Kim, Mi Sook ; Sohn, Sue Kyung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6719~6727
DOI : 10.5762/KAIS.2014.15.11.6719
This study examined the relationships between self-control and addictive mobile phone use among nursing students. The data was collected through structured questionnaires from 293 students and analyzed using a t-test, ANOVA, Scheffe's test and Pearson's correlation coefficients on SPSS WIN v 18.0 and AMOS v 18.0. The mean scores of self-control and addictive mobile phone use were
, respectively. A statistically significant negative correlation was observed between self-control and addictive mobile phone use (t=-.447, p<.01). In addition, self-control explained 28% of the addictive mobile phone use. Intervention programs to improve self-control should be developed to prevent addictive mobile phone use for nursing students.
Relationship among Pain, Depression and Activities of Daily Living in Nursing Home Residents
Lee, Young-Mi ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6728~6738
DOI : 10.5762/KAIS.2014.15.11.6728
This study investigated the relationship among pain, depression and activities of daily living in nursing home residents. Data was collected through a structured questionnaire survey of residents at 4 nursing homes in S city. The measures were the Numeric Rating Scale (NRS) and Discomfort Scale-Dementia of the Alzheimer Type (DS-DAT) for self-reported and observational pain, Geriatric Depression Scale Short Form-Korea Version (GDSSF-K) for depression, Barthel Activities of Daily Living (BADL) scale for ADL. The data were analyzed using the Pearson's correlation coefficient and hierarchical multiple regression using the SPSS/PC 20.0 program. The analysis results of the relationship of pain, depression and activities of daily living, both DS-DAT and NRS showed a significant negative correlation with the activities of daily living and a positive correlation with depression. Finally, gender, arthritis, depression, and activities of daily living explained 28.1% of the variance in pain using NRS, whereas depression and activities of daily living explained 21.5% of the variance in pain using DS-DAT. The results highlight the need to develop a pain management program that reduces the depression and promotes the activities of daily living in nursing home residents; hence, a differentiated approach as non-pharmacological interventions is required.
Antidepressant Effect of Acer tegmentosum Maxim on Forced Swimming Test in the Rat
Jin, Byung-Moon ; Lee, Gil-Hyun ; Hyun, Kyung-Yae ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6739~6745
DOI : 10.5762/KAIS.2014.15.11.6739
Acer tegmentosum Maxim (AT) is a species of the maple genus, which is native to North-Eastern China and Korea. Traditionally, AT has been already used for pain relief in Korea. On the other hand, its antidepressant-like activity and related molecular mechanisms is not completely understood. Using the Forced Swimming Test (FST), the effects of a subacute treatment with AT(100, 200, and 400 mg/kg, p.o.) on the immobility and FST-induced changes to the immune parameters, cortisol, ACTH, and cytokine, in rats were investigated. The tendency of immobility showed a dose-dependent decrease in FST. The levels of cortisol, IL-6 and
in the peripheral blood were increased significantly after FST exposure. Overall, these results suggest that AT treatment can decrease the immobility time and the release of pro-inflammatory cytokines in the FST, suggesting that the anti-inflammatory effects of AT might be involved in the antidepressant-like effect.
Effect of Long-term Care Utilization on Health Care Utilization of the Medicaid Elderly
Jung, Woon-Sook ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6746~6755
DOI : 10.5762/KAIS.2014.15.11.6746
This study examined the effect of long-term care utilization on the health care utilization of Medicaid elderly. The subjects were 5,834 long-term care insurance with the level 1 Medicaid elders, who received either service or non-service. This study examined the impact of long-term care service on the probability of health care utilization and the costs of health care utilization. The total medical cost and inpatient day between 2009-2007 were significant factors affecting long-term care utilization (
, p< .001,
, p< .001 ) and this variable explained 22.6% of the total medical cost and 22.4% of the inpatient day. The results showed that non-service in long-term care was associated with an increase in health care utilization. The current long-term care insurance system should place higher priority and more resource allocation on long-term care utilization to increase the efficiency of the insurance system.
Influence from the academic stress by the achievement pressure of their parents and adjustment effect of self-differentiation
Shin, So-Hong ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6756~6766
DOI : 10.5762/KAIS.2014.15.11.6756
The aim of this study was to validate the influence from academic stress caused by the achievement pressure of their parents and the adjustment effect of self-differentiation. The data was collected from 257 students from the 19th of May, 2014 to the 30th of May, 2014 for freshmen and sophomores of a college in the Kyoungbook region to validate the study. The SPSS/PC 18.0 program was used for the statistical analysis. Hierarchical multiple regression analysis revealed more less influence of academic stress caused by the achievement pressure((
, p<0.05) of their parents but there was no reasonable value in validating the adjustment effect to reduce the academic stress by self-differentiation, i.e., it should be a non-linear and complex effect rather than a simple linear relationship for self-differentiation.
Effects of Trunk Pattern Exercise in Proprioceptive Neuromuscular Facilitation Integrated Transcranial Direct Current Stimulation on Function of Lower extremity in Stroke Patients
Cho, Hyuk-Shin ; Cha, Hyun-Gyu ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6767~6773
DOI : 10.5762/KAIS.2014.15.11.6767
The study examined the effects of trunk pattern exercise in proprioceptive neuromuscular facilitation (PNF) integrated transcranial direct current stimulation (tDCS) on the muscle activity and balance, walking speed in stroke patient. Thirty-one patients with hemiplegia due to stroke were assigned to either the experimental group (n=15) or control group (n=16). Both groups performed trunk pattern training in PNF for 3 times per week over a 6 week period for 20 minutes per session. The experimental group performed additional tDCS for 20 minutes. A comparison of the two groups after the intervention showed that the exercise program in experimental group had a more significant on the gastrocnemius, tibialis anterior and balance than the control group (p<.05). This showed that trunk pattern exercise in PNF integrated tDCS had a positive effect on the functional recovery of the lower extremity in stroke patients.
Transcriptome Analysis of Human HaCaT Keratinicytes by Ginsenosides Rb1 and Rg1
Kim, Jung Min ; Cho, Won June ; Yoon, Hee Seung ; Bang, In Seok ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6774~6781
DOI : 10.5762/KAIS.2014.15.11.6774
This study examined the efficacy and the mechanism of action of biological response modifiers, ginsenosides Rb1 and Rg1 isolated from Panax ginseng C.A. Meyer on human keratinocytes HaCaT cell lines. A non-significant cytotoxic response was obtained in the HaCaT cell lines on treatment with various concentrations of ginsenosides Rb1 and Rg1 for different time durations. Furthermore, the global changes in the mRNA profile of HaCaT cells were investigated using DNA microarrays after stimulation with the ginsenosides Rb1 and Rg1. Ginsenosides Rb1 and Rg1 strongly increased FGF2 in HaCaT cells, and were found to be a candidate gene for antioxidant activity and elasticity. Other key candidate genes for antioxidant activity, such as FANCD2, LEPR, and FAS, also show enhanced regulation in HaCaT cells treated with ginsenoside Rb1. This study will be useful for understanding the regulatory genes involved in skin elasticity and signal transduction pathway stimulated by the ginsenoside Rb1. This paper currently focuses on the key factors regulating the interaction of anti-aging principles and skin elasticity.
Effects of Physical Burden and Musculoskeletal Symptoms on Job Stress in Hospital Workers
Kim, Dong-Hyun ; Chae, Yoo-Mi ; Kim, Hee-Kwang ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6782~6792
DOI : 10.5762/KAIS.2014.15.11.6782
This study examined the effects of the symptoms of musculoskeletal disorder and the burden of the body on work stress in a university hospital workers. The research surveyed 679 subjects. The relevant factors affecting the job stress were found to be female, young people age group, unmarried, shift work, work more than 8 hours, short experience workers. The work stress was significantly higher in the non-smoker (p=0.000), regular exercise/sports(p=0.022) and non-drinking(p=0.038) groups. In addition, the mental fatigue, presence of musculoskeletal symptoms, fatigue level, and marital status increase the risk of the work stress. The results showed that the burden of the body and musculoskeletal disorders are related interactively with each other.
Study of On- and Off-Campus Clinical Practice Satisfaction and Major Satisfaction among Dental Hygiene Students in Some Regions
Moon, Seon-Jeong ; Ku, In-Young ; Choi, Hwa-Young ; Ka, Kyung-Hwan ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6793~6803
DOI : 10.5762/KAIS.2014.15.11.6793
A self-administered survey was conducted on dental hygiene students at colleges or universities in Chungcheong Province to increase the levels of practice for them and provide basic data that could improve their major satisfaction after practice. The data was collected from December 2012 to April 2013 and 766 questionnaires, except for 13 containing insincere responses, were finally analyzed using SPSS/Win18.0. The on- and off-campus practice groups formed 59.7% and 57.4%, respectively. The most frequent place for practice was university dental hospitals, followed in order by hospitals/clinics and health centers. University students were more satisfied with on-campus practice in terms of factors, such as practice contents, practice time, and practice performance than those at three-year colleges. The students in the higher grades were more satisfied with the practice time. The university students were also more satisfied with off-campus practice in terms of all the factors than those at three-year colleges. The students in higher grades were more satisfied with the practice time and practice performance. The on- or off-campus practice group was generally more satisfied with their major than the non-practice group, and each of the factors-practice performance, practice time, practice environment, and practice contents-significantly affected the major satisfaction. The results highlight the need to plan and provide satisfactory education based on an understanding and awareness of students so that they can take pride in their major through on- and off-campus practice. In addition, it is also necessary to develop educational guidelines for clinical practice and efficient programs so that clinical practice can create the optimal learning situation.
Design of A 10MHz Bandpass Filter Using Grounding and Floating CDTA Active Inductors
Bang, Junho ; Ryu, In-Ho ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6804~6809
DOI : 10.5762/KAIS.2014.15.11.6804
This paper presents a bandpass filter using a current differencing transconductance amplifier (CDTA)s for application to low-voltage and low-power analog signal processing systems. The presented filter employs grounding and floating active inductors, which are composed of two or three CDTAs, and is capable of realizing all the standard functions of the filter without requiring any component matching criteria or extra active components. The HSPICE simulation result of the designed active bandpass filter showed that it had a 10MHz center frequency with -2.5dB attenuated bandwidth from 9.5 MHz to 10.5 MHz, and -50dB from 8 MHz to 17 MHz.
Efficient Image Transmission System Using IFS
Kim, Sang Hyun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6810~6814
DOI : 10.5762/KAIS.2014.15.11.6810
The concept of IFS (Iterated Function System) was applied to compress and transmit image data efficiently. To compress the image data with IFS, self-similarity was used to search a similar block. To improve the coding performance for the iterated function system with natural images, the image will be formed of properly transformed parts of itself to minimize the coding error. The simulation results using the proposed IFS represent high PSNR performance and improved compression efficiency with the coefficient of a recursive function.
Study of the Cryptographic Processor Design appropriate for the RFID system
Kang, Young-Jin ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6815~6820
DOI : 10.5762/KAIS.2014.15.11.6815
The creation of a RFID/USN environment has increased rapidly due to the activation of ubiquitous security environment suitable for RFID/USN environment but has failed to comply with the speed of security threats. Therefore, this thesis presents MSNR suitable for RFID/USN. The MSNR presented showed an increase in the processing rate of 1.3 times compared to the existing AES and showed 2 fold improvement in performance in terms of the overall system efficiency. Therefore, MSNR is considered to be a password algorithm suitable to overcome the conditions of environmental resource conditions, such as RFID/USN.
Development of Power Supply for High-voltage FET Test
Park, Dae-Su ; Oh, Sung-Chul ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6821~6829
DOI : 10.5762/KAIS.2014.15.11.6821
The use of semiconductor devices as a component of eco-friendly motor vehicles has increased and their widespread use as high voltage switches is expected. On the other hand, in the case of high-voltage switches, reliability test equipment is not localized. To test high voltage switches, this paper analyzed the relevant test standards for developing power supplies. In particular, for the automotive semiconductor reliability test, the AEC (Automotive Electronic Council) Q101 was analyzed. Based on that, the standard specifications of the power supply were determined. For the main power circuit, the pull bridge converter was adopted and based on the specification, the circuit parameters were determined and verified by simulation. The interface for the parallel and pattern operation was designed. The characteristics of the power supply were tested.
EcoMon: A System for Monitoring Eco-Driving
Han, Dongho ; Kim, Sangchul ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6830~6837
DOI : 10.5762/KAIS.2014.15.11.6830
Since the advent of global warming and energy depletion, there has been great interest in eco-driving (energy-efficient driving). In this paper, a system is proposed to monitor the idle running of an engine and steady driving for a vehicle equipped with an ISG (Idling Stop & Go system). The system consists of a G/W device to acquire the vehicle operation data, a smartphone app for monitoring eco-driving and a server system. The main contribution of this paper is that it defines the integrated functions, the architecture and operation mechanisms of a system for monitoring eco-driving including the prohibition of running idle. The system enables the users to check the idling stop times, driving speeds, fuel savings, and
emissions, resulting in the driving style for eco-driving. The server system, which is a part of this system, provides OpenAPI-style web services for the storage and retrieval of car operation data, which facilitates the development of applications.
Novel Soft Decision Generation Technique for Performance Improvement of 3GPP LTE-Advanced Systems with Multiple Antennas
Park, Jaeyoung ; Kim, Jaekwon ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6838~6844
DOI : 10.5762/KAIS.2014.15.11.6838
3GPP LTE-Advanced systems adopt multiple antennas for high speed data transmission. In general, the receiver complexity of a spatially mutiplexed (SM) multiple-input multiple-output (MIMO) system grows in proportion to the number of candidate vectors. A large number of candidate vectors increases the reliability of the soft output values. The maximum likelihood (ML) signal detection with a large number of candidate vectors achieves high performance. On the other hand, low complexity receiver techniques with a small number of candidate vectors provide soft output values, such as low reliability. This paper addresses the improving reliability of the soft output obtained from a small number of candidate vectors. The improved performance of the proposed technique with the aid of computer simulations is reported.
System Design of IDS for DDoS Detect and Defense
Hong, Seong-Sik ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6845~6848
DOI : 10.5762/KAIS.2014.15.11.6845
This paper proposes a system design of IDS for detecting and defending against DDoS attacks on a network. The proposed system has three parts; the Alert, Attack Analyzer and Defense agent. When the server resource was reduced too much by incoming traffic, the Alert Agent sends message and traffic information to the Attack Analyzer. The message and traffic to the Attack analyzer include only the sender & receiver address and packet numbers for minimizing the overload of Attack Analyzer. Message Received Attack Analyzer investigates the Message. If the pattern of traffic is the same as the DDoS Style, the Analyzer sends a message to the Defense Agent to block that traffic. In this system, at the serious state of the server-down, the Attack analyzer uncovers the DDoS Attacker and send a message to the Defense Agent to block that traffic. This works for server reactivation as soon as possible.
Study on Mechanism of Preventing Application Piracy on the Android Platform
Lee, Kwang-Hyoung ; Kim, Jae-Yong ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6849~6855
DOI : 10.5762/KAIS.2014.15.11.6849
Recently, with the increasing use of smart phones, security issues, such as safety and reliability of the use of the Android application has become a topic to provide services in various forms. An Android application is performed using several important files in the form of an apk file. On the other hand, they may be subject to unauthorized use, such as the loss of rights and privileges due to the insertion of malicious source code of these apk files. This paper examines the Android environment to study ways to define the threats related to the unauthorized use of the application source code, and based on the results of the analysis, to prevent unauthorized use of the application source code. In this paper, a system is provided using a third body to prevent and detect applications that have been counterfeited or forged illegally and installed on Android devices. The application provides services to existing systems that are configured with only the service server that provides users and applications general, This paper proposes the use of a trusted third party for user registration and to verify the integrity of the application, add an institution, and provide a safe application.
Adaptive Web Search based on User Web Log
Yoon, Taebok ; Lee, Jee-Hyong ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6856~6862
DOI : 10.5762/KAIS.2014.15.11.6856
Web usage mining is a method to extract meaningful patterns based on the web users' log data. Most existing patterns of web usage mining, however, do not consider the users' diverse inclination but create general models. Web users' keywords can have a variety of meanings regarding their tendency and background knowledge. This study evaluated the extraction web-user's pattern after collecting and analyzing the web usage information on the users' keywords of interest. Web-user's pattern can supply a web page network with various inclination information based on the users' keywords of interest. In addition, the Web-user's pattern can be used to recommend the most appropriate web pages and the suggested method of this experiment was confirmed to be useful.
Method to Minimize the Moving Time of the Gantry
Kim, Soon-Ho ; Kim, Chi-Su ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6863~6869
DOI : 10.5762/KAIS.2014.15.11.6863
A SMT machine is used to place electronic components on a PCB precisely. To place it precisely, after a component inspection, it finds an offset value using a vision camera, and places the precise position on the PCB. In general, to inspect the components with a vision camera, the components stop in front of the camera for inspection, then move to the placement position. On the other hand, if they do not stop in front of a camera, the inspection time will be shortened and the productivity would be increased. In this thesis, when inspecting without stopping in front of a camera, the fastest way among various routes is described. For the gantry passing over a vision camera, both the distance and speed of a gantry moving trajectory were studied, and there was approximately 5% speed increment when using the method suggested in this thesis.
Study of the Improvement of Information Management System on Subcontracted Service Results
Kim, SeongJin ; Kim, NamGon ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6870~6876
DOI : 10.5762/KAIS.2014.15.11.6870
Construction subcontracted services are conducted without clear systems, but to establish a sound trading order between the contractors and subcontractors, the government recently complemented a relevant system to legalize and systematically manage subcontracted services. This study prepared a system for managing the subcontracted construction service result after providing the optimal alternative plan through a related persons' interview, such as the ordering agency and the service company. Towards this end, the management system is provided to integrate subcontracted services and contracted services based on the system managing Construction Technology Service Result. The study findings can be shortened by more than 90% of the performance certification issuing work, and used to formulate measures to protect subcontractors, such as the prevention of low-priced subcontracts, by managing an objective and reliable subcontracted service result.
Lake Vulnerability Assessment
Kim, Eung-Seok ; Yoon, Ki-Yong ; Lee, Seung-Hyun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6877~6883
DOI : 10.5762/KAIS.2014.15.11.6877
The continuous social development has led to increasing pollution in lakes. This study proposed the LVRI (Lake Vulnerability Resilience Indicator) based on the vulnerability assessment of climate change for an environmental risk assessment in lakes sufferign water pollution in an integrated aspect of the characteristics in lake watersheds. A total of 11 representative assessment factors were selected and constructed for 6 lake basins in the Geum River Watershed to calculate the exposure, sensitivity and adaptation indicators in a vulnerability assessment classification system. The weight coefficients for assessment factors of the LVRI were also calculated using the Entropy method. This study also compared the rank results of the lake environmental risk with/without the weight coefficients of assessment factors for the practical application of the proposed lake environmental risk assessment method. The lake environmental risk results estimated in this study can be used for long-term water quality analysis and management in lakes.
Study of the Restoration of Urban Land Lots Arrangement in Old Cheonan-Gun's Center Parts : for Understanding of Governing Institutions' Arrangement
Yeo, Sang-Jin ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6884~6889
DOI : 10.5762/KAIS.2014.15.11.6884
To understand the governing institutions' arrangement in an old city of the late Joseon dynasty, it is necessary to compare and weigh the detailed old map with regional geographical records Eupji. In particular, the investigation of 'Closure Land Registration Map' is indispensable, which was made in the period of the Japanese occupation. This study aims to restore the urban land lots arrangement of Cheonan-Gun's old center part in the initial period of the Japanese occupation, using the oldest 'Closure Land Registration Map(1940)' of Cheonan-Gun. The results of this study will be helpful in understanding the governing institutions' arrangement of Cheonan-Gun in the late Joseon dynasty.
Experimental Study on the Application of Concrete Admixture using the EAF Reduction Slag
Choi, Jae-Seok ; Jang, Pil-Sung ; Jo, Young-Jin ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6890~6897
DOI : 10.5762/KAIS.2014.15.11.6890
EAF reduction slag has unstable properties of expansion and destruction. Therefore, it cannot be used as a construction material. The purpose of this study was to use EAF reduction slag as a concrete admixture. EAF reduction slag contains
(calcium aluminate compounds). To confirm the properties of EAF reduction slag as a concrete admixture, the condensation, compressive strength and activity factor due to substitution rate of EAF reduction slag were measured. Originally, EAF reduction slag was cured rapidly because of its chemical composition (
). On the other hand, when 8% gypsum was added, its properties of condensation and compressive strength were similar to the plain specimen. When 6% gypsum was added, the quality of the KS F 2536 standards (quality standard number 3) were met in terms of activity factor. Overall, 8% gypsum addition is the most appropriate by considering the activity factor in the long-term compressive strength.
Analysis Model of the Stress Ribbon Bridge considering the Construction Stage
Yun, Kyung-Min ; Kim, Kee-Dong ; Lee, Chin-Ok ; Lim, Nam-Hyoung ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6898~6905
DOI : 10.5762/KAIS.2014.15.11.6898
A stress ribbon bridge is a PSC structure that behaves as a reverse arch structure due to post-tensioned thin deck of the catenary type. In foreign countries, the stress ribbon bridge is recognized as the minimum destruction of nature and beautiful bridge, and has many construction examples as pedestrian and car bridges. On the other hand, there have been few studies in Korea. In this study, the FE Analysis model was established for different construction stages considering the nonlinear and time-dependent behaviors. The FE model was verified by a comparison with the numerical results and the behavior was analyzed for the different construction stages.
Study of the Remodeling Characteristics of Traditional Urban Housing for Lease (cases of an Open-rectangular plan in the Traditional Urban Housing Neighborhood of Bukchon)
Shin, Ye-Kyeong ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6906~6914
DOI : 10.5762/KAIS.2014.15.11.6906
This study examined the remodeling characteristics of traditional urban housing for lease focusing on Hanok in the traditional urban housing neighborhood of Bukchon. Furthermore, the space syntax was used as the main analytic approach to objectively revealing the change in social properties of each spatial element because each room forms its status in the structural relation with many rooms and accommodates the special change in traditional housing and modern life. These findings revealed the following; spatial division between the landlord and tenant results in a hierarchical change in the yard and main hall and strengthens the privacy of the space of the landlord.
Study of the composition and spatial characteristics of IIT campus by Mies van der Rohe
Kim, Chul-Hwan ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6915~6921
DOI : 10.5762/KAIS.2014.15.11.6915
This study examined the composition and spatial characteristics of the Illinois Institute of Technology (1939-1959) campus by Mies van der Rohe. Studies of the Mies' architecture has been focused mostly on "universal space", structural rationality for a single building. Therefore, it is interesting to study an IIT campus through which Mies composed public space dealing with several buildings together. To determine the relationships with his previous works and the design intentions for IIT campus, this paper studied his preliminary sketches, perspective drawings etc.. By doing so, the paper presents the following conclusions. First, Mies composed the IIT campus with simple linear buildings as walls to create the "flowing space" through the campus. Secondly, the IIT campus could become the "neutral frame" integrating the campus with urban space. Third, Mies also created an open, continuous public space in the center of the campus that allows protective, quiet seclusion for the students.
Basic Study of the Application of BIM to Classroom Spatial Information of School Facilities
Lee, Sang-Heon ; Choi, Joong-Hyun ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6922~6931
DOI : 10.5762/KAIS.2014.15.11.6922
The development of modern science and technology and computer engineering breakthroughs in the field of information and communication have brought about many changes in lifestyle. The government announced the goal of educational policy in 2030 to educate people in future society on a future-oriented perspective. Changes in the curriculum along with changes in educational facilities are essential. Therefore, the operation of a classroom should be associated with classroom spatial information. The BIM design based on 3D geometry information was designed. The BIM design can link the design information and non-geometric information of spatial information. This study examined the operation of school facilities based on classroom spatial information with BIM. This study suggests standardization of classroom spatial information based on BIM. The scenarios of BIM ordering and design for departmentalized classrooms management is proposed.
Basic Study of the Improvement of Maintenance Process for Efficient Highway Pavement Management
Park, Jong-Beom ; Lee, Yong-Jun ; Lee, Min-Jae ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6932~6942
DOI : 10.5762/KAIS.2014.15.11.6932
The expressway is a key area of road networks for national industry, economics and social development. In addition, the number of lines are increasing continuously. Recently, road management policy have shown a paradigm shift to safe road, low-carbon and green etc. Nevertheless, the road condition has deteriorated dramatically by fatigue cracking, thermal cracking and weather impact. On the other hand, the budgets for highway maintenance have shrunk dramatically. In this study, an effective pavement management and maintenance process was developed to extend the pavement serviceability and pavement life to overcome the rack of budgets.
Study of the Trophic State Assessment and Analysis of Water Quality Improvement by Dredging in Hwoiya Reservoir
Suh, Myung-Gyo ; Lee, Sang-Hyeon ; Suh, Jung-Ho ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6943~6951
DOI : 10.5762/KAIS.2014.15.11.6943
The trophic state assessment of the Hwoiya reservoir was estimated using the Trophic state indices (TSIs) of Carlson and Aizaki using the transparency and concentrations of chlorophyll-a and total phosphorus obtained from two sites of the reservoir. The TSIs assessments showed that eutrophic phenomena occur frequently in the Hwoiya reservoir. In addition, strategies to reduce the phosphorus especially would be prepared because the Hwoiya reservoir exceeded phosphorus-limiting state of 17 < TN/TP (total nitrogen/total phosphorus). Three scenarios for a simulation of the dredging effect of sediments on the water quality using the WASP7 model were made at two sites, which were 10% (scenario 1), 40% (scenario 2) and 60% elution of the pollutants from sediments (scenario 3). In the most elution case (60%), scenario 3, it was considered that 6.4% TN and 9.3% TP at site 1, and 3.9% TN and 5.6% TP at site 2 could be reduced.
Study of the Photodegradation Properties of Toluene using Photocatalysts Modified by Metal Matter
Jang, Hyun Tae ; Cha, Wang Seog ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6952~6957
DOI : 10.5762/KAIS.2014.15.11.6952
In photocatalysis, the addition of metal matter to
can alter the surface properties. As such, the metal can increase the rate of the photodegradation reaction. In this study, a range of modified
photocatalysts were prepared and tested to improve the activity of photodegradation at a batch-typed photoreactor. To obtain a good sol solution of the
photocatalyst, several types of dispersion agents and stabilizers were investigated. The photocatalyst solutions were modified with isoproply alcohol as the dispersion agent and sodium silicate as the stabilizer. The effects of various metallic elements on enhancing the photocatalytic activity of
on the degradation of toluene were examined. Palladium-added
was found to be the best, whereas copper or tungsten-added also showed good results. In the case of palladium addition, the increase in removal efficiency was 25%. On the other hand, Fe-added
showed a notable decrease in photocatalytic degradation. Additional doping of copper or tungsten on the
had no positive effect on the photodegradation activity.
Distributional characteristics of risky phytoplankton species at inner and outer sites around Incheon seaport of Korea
Kwon, Oh Youn ; Kang, Jung-Hoon ;
Journal of the Korea Academia-Industrial cooperation Society, volume 15, issue 11, 2014, Pages 6958~6965
DOI : 10.5762/KAIS.2014.15.11.6958
This study examined the occurring pattern of potential risky species and the related abiotic factors for port-specific environmental management considering the control of ballast water-induced foreign species at Incheon seaport. From a total of 62 species observed during the study, 13 red-tide and 7 toxic phytoplankton, normally occurring species in Korean waters, occurred from the seasonal investigation at the inner and outer sites of the Incheon seaport from 2007 to 2009. The number of potential risky phytoplankton was relatively high at the outer site of the port during summer and winter. Red-tide species, such as Skeletonema spp., Thalassiosira nordenskioldii, and Paralia sulcata, dominated the total standing crops at the inner site (avg. 72.4%) and outer site (avg. 77.6%) in spring and summer, being positively correlated with the concentrations of total suspended solids (TSS) and pH (p<0.05). In summer, the red-tide species (Skeletonema spp.) and toxic species (Alexandrium catenella, A. tamarense, Dinophysis acuminata and Pseudo-nitzschia spp.) co-dominated (avg. 74.2%) at the inner site, while Skeletonema spp. and P. sulcata predominated (avg. 67.2%) at the outer site. During the study periods, the toxic species were significantly and positively correlated with the chemical oxygen demand (COD), dissolved inorganic nitrogen, silicate and phosphate (p < 0.05). The chlorophyll-a (chl-a) concentration of phytoplankton at the outer site ranged from 1.49 to
on average, which was 3-5 times higher than that at the inner site in spring, summer and autumn, whereas there was no difference in the concentration between inner (avg.
) and outer (avg.
) sites in winter. In summary, diverse red-tide species dominated and a relatively high chl-a concentration existed at the outer site, whereas a relatively high number of toxic species and low chl-a concentration was observed at the inner site in summer. The potential risky species can outbreak in association with the concentration of nutrients, COD and TSS, suggesting that distinctive management of potential risky species is needed considering the environmental characteristics of Incheon seaport.