Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Fisheries and Marine Sciences Education
Journal Basic Information
Journal DOI :
The Korean Society for Fisheries and Marine Sciences Education
Editor in Chief :
Volume & Issues
Volume 26, Issue 6 - Dec 2014
Volume 26, Issue 5 - Oct 2014
Volume 26, Issue 4 - Aug 2014
Volume 26, Issue 3 - Jun 2014
Volume 26, Issue 2 - Apr 2014
Volume 26, Issue 1 - Feb 2014
Selecting the target year
Motivation of the Participants Involved in Marine Sports Emotional Impact of Exercise
Kim, So-Yoon ; Shin, Koun-Soo ; Kim, Yong-Jae ; Lee, Dong-Woo ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 677~685
DOI : 10.13000/JFMSE.2014.26.4.677
Motivation of participants in this study were marine sports movement through the emotional impact of these participants can continue to take advantage of marine sports, and at the same time looking for ways to stabilize participants' emotions and mental exercise to find ways to enable identifying emotions purpose is to provide basic information. In order to achieve these objectives May to October 2013 review of research results obtained are as follows. First, marine sports participation motivation of the participants involved in the relationship between emotion and motivation exercise fun, and when the external, physica l health, social, physical condition, emotional fulfillment and exercise all the sub-factors and the significant positive correlation with that of thes howed, nomotivation and vitality are significant negative relationship with, respectively. Second, the participant's participation in marine sports exercise emotional impact on motivation Motivation is a fun look at the impact on the results of this condition, fulfillment, health and physical fitness showed the vitality of the social, achievement, condition, pleasure, respectively. And when the external purification, social, achievement, health and physical fitness showed as, fulfilling the condition, social, health and physical fitness, a sense of accomplishment as appeared, pride of accomplishment, social, physical condition, pleasure, showing off the external influence.
A Study on the Improvement of MSI by Ship Hull Form Modification of the Training Ship
Han, Seung-Jae ; Lee, Seung-Chul ; Ha, Young-Rok ; Jeong, Iee-Gyu ; Kim, In-Chul ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 686~694
DOI : 10.13000/JFMSE.2014.26.4.686
Research on ship motion and seasickness is recognized as the important research area to ensure the pleasant operative environment in addition to the research of operation safety of ship. In this paper, The motion performance in waves for the training ship Kaya of Pukyong National University is obtained by using the computer program based on Strip method. To guarantee the pleasant seafaring in ocean, the vertical acceleration of ship motion is calculated according to the hull form modification. The results of calculation by changes of hull form are compared with the guideline of MSI(Motion Sickness Incidence). The degree of motion sickness is shown and discussed through the comparison between calculated vertical acceleration spectrum and MSI guideline.
Changes of Serum Chemistry Values on Size and Cultured Method in Korean Rockfish, Sebastes schlegeli
Jung, Sung-Hee ; Seo, Jung-Soo ; Choi, Hye-Sung ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 695~704
DOI : 10.13000/JFMSE.2014.26.4.695
The purpose of this study was to obtain reference values of serum chemistry in Korean rockfish (Sebastes schlegeli), 5 juvenile (n=25) and 3 broodstock (n=15) subpopulations which were differentiated by cultured method. Serum samples were analyzed for the following commercial clinical kits: total protein, albumin, glucose, AST (aspartate aminotransferase), ALT (alanine aminotransferase), total cholesterol, free cholesterol, LDH (lactate dehydrogenase) and ALP (alkaline phosphatase). Significant differences were observed in the values of total protein, albumin, total cholesterol, AST, ALT, LDH and ALP between juvenile and broodstock subpopulations. In the comparison of total protein, albumin, total cholesterol and ALP, broodstock subpopulations showed higher levels. On the other hand, increased AST, ALT and LDH were observed in juvenile subpopulations. These results indicate that cultured method are major contributors to health-related physiology of Korean rockfish, juveniles and broodstocks.
Exploration to the Possibility of Deepening Educational Gap in using Digital Textbook
Seo, Yong-Hee ; Oh, Kyoung-Hee ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 705~716
DOI : 10.13000/JFMSE.2014.26.4.705
This study starts from a question about the expectation that government policy reduces the educational gap by introducing digital textbooks. In addition, we try to figure out how to minimize the problems that will occur when digital textbooks are introduced and fully adopted. The purpose of this study is exploring the possibility that suing digital textbook deepens learning gap among students. Researchers are discussed that the gap between 'information' haves' and 'information' have-nots' and between 'the competent user' and 'the incompetent user' increase difference between 'knows' and 'know-nots' on the socio-economic class. These difference are likely to imply that using digital textbook is deepening the educational gap.
Development of Workplace Spirituality Scale for Early Childhood Teacher
Lim, Jeong-Su ; Sim, Eun-Joo ; Lee, Kyeong-Hwa ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 717~735
DOI : 10.13000/JFMSE.2014.26.4.717
This study aims to develop and validate the WSSECT (Workplace Spirituality Scale for Early Childhood Teacher) through literature review and statistical tests. The initial version with 40 items based on two dimensions of spirituality in individual and professional level was constructed. Then, it was revised twice for improving reliability and validity. Finally the WSSECT was constructed of 4 factors - i.e. 'calling for ECE teacher job', 'meaning for life', 'membership in educational community' and 'awareness of inner life' - including the 23 items. The scale will be expected to identify workplace spirituality of early childhood teacher.
The Experience Study on Patterns Phenomenology in the Allocation of Subject-specialized Teachers at Elementary Schools
Choo, Kap-Sik ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 736~748
DOI : 10.13000/JFMSE.2014.26.4.736
The purpose of the study is to examine various conditions, which are recognized by teachers in the allocation of subject-specialized teachers at elementary schools, into five types of conflicts, in order to offer implications for the operation and allocation of the subject exclusive system henceforth. The study, therefore, categorized the actual allocation process experienced by subject-specialized teachers at elementary schools into five aspects the first is, understanding of students, the second, the ability to teach exclusive subjects, the third, a relationship with students, the fourth, workplace environment at schools, and the fifth, the continuity of subject specialist teachers. Conditions demonstrated in each category are classified into the types that occurred by individual and mutual roles demonstrated through in-depth, where keywords are selected by aspects to suggest conflict conditions. In order to operate the subject exclusive system more efficiently and to boost the effects of positive education, the workplace environment at schools need to be improved urgently, including a variety of training, program development, and financial support. The most vital requirement is to prepare groundwork through mutual understanding and collection of extensive opinions from field teachers based on a consensus that a school is an educational community. The study anticipates that the result could provide a foundation for the preparation of qualitative improvement and development measures for the subject exclusive system at elementary schools.
A Study on Strengthening Competitiveness for China TianJin Port
Song, Xiaoming ; Shin, Han-Won ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 749~759
DOI : 10.13000/JFMSE.2014.26.4.749
With the rapid development of global economic and trade, the ports in the North-east Asia region have developed rapidly. Ocean shipping plays an irreplaceable role in China's foreign trade. Improvement of China's economy and continuous increase of trade in North-East Asia have made China as the number one in the world in container transport. Tianjin port which is the biggest international trade port in North-east China. Tianjin Binhai New District has incorporated in (CPC Central Committee on the outline of the Eleventh Five-Year Plan for national economic and social development proposals) which had adopted by The Fifth Plenary Session of the 16th CPC Central Committee. However, the competitions between ports are getting intense, the construction of Northeast Asia shipping center is in the ascendant, which bring new opportunity and challenge to the development of Tianjin port logistics. Therefore, Tianjin should according to its characteristics, integrating port resources, exert great efforts in developing port logistics, thus promoting regional economic development. Therefore, it is necessary to make the main study on the development strategy of Tianjin port logistics.
The Network Design of China's Northeast Cold Chain
Park, Nam-Kyu ; Choi, Woo-Young ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 760~768
DOI : 10.13000/JFMSE.2014.26.4.760
Yet logistics base in China has a refrigerated storage facilities installed areas, the number of those is very limited and is generally insufficient. According to these especial points, a new construction cold chain logistics network design strategy is required from how to use the existing refrigerated warehouses to new issue. For example, however refrigerated storage facility is supplied, can it satisfy all demand of this area? Then does it have optimized location of this area? If future demand expansion, adding that already other refrigerated storage facilities matter? Or, add another refrigerated facilities, optimum cold chain established a network matter? So on. Above problems can be occurred. In order to solve facing many of these issues of distribution network, northeast area in China has been selected as a subject, and we designed a new cold chain distribution network.
A Study on the Role of Maritime Enforcement Organization As Response of Illegal Fishing
Jung, Bong-Kyu ; Choi, Jung-Ho ; Lim, Seok-Won ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 769~788
DOI : 10.13000/JFMSE.2014.26.4.769
Today, all the countries of the world newly recognize importance of sea on 70% area of the earth, which are focused on efforts for security of marine territory and fishes resources. On the security concerns of the ocean & fishes resources, Sea are very important on the ground of the importance of the ocean, thus international community has been trying to combat a maritime security threat and illegal fisheries. Coastal states need to have proper state's jurisdiction and exercise it's jurisdiction to response effectively to a maritime security threat and illegal fisheries. Here, many of the coastal states strengthened the rights in Exclusive Economic Zone(;EEZ) naturally, there are made cooperation activities and keen competition in the sea because deepening of complex understanding of the relationship between the surrounding countries with marine surveys & continental shelf development, island territorial sovereignty & marine jurisdiction in overlap of sea area on EEZ. In these circumstances, foreign fishing boats invaded to our territorial waters and EEZ many times. in addition, Chinese fishing boats are going to illegal fisheries naturally. On this point, a powerful crackdown of maritime enforcement organization had no effect on them. Also more and more their resistance gathered strength and tendency of a illegal activities became systematization, group action and atrocity little by little. So this thesis includes a study on the regal regulation, the system and formalities on the control of illegal fishing. And the author analyzed the details of the activities of illegal fishing and boats controlled by Korea Coast Guard(KCG), fishing patrol vessels of Ministry of Maritime Affaires and Fisheries(MOMAF) and Navy etc. from in adjacent sea area of Korea. In relation to this, the policy and activity plan were devised to crackdown to illegal fisheries of foreign fishing boats and then it was enforced every year. According to this, analyze the present conditions of illegal fisheries of a foreign fishing boats on this study, also analyze the present conditions of maritime enforcement organization & found out problems to compared it. protect the territorial waters, at the same time protection of marine mineral resources & fishes resources of EEZ including continental shelf, which has want to study for the role & response of maritime enforcement organization for the protection of fisheries resources and a proper, a realistic confrontation plan of maritime enforcement organization against illegal fisheries of foreign fishing boats.
Optimum Feeding Rate in Growing Olive Flounder Paralichthys olivaceus Fed Practical Extruded Pellet at Optimum Water Temperature (21℃)
Kim, Sung-Sam ; Kim, Kang-Woong ; Kim, Kyoung-Duck ; Lee, Bong-Joo ; Han, Hyon-Sob ; Kim, Jae-Won ; Bai, Sungchul C. ; Lee, Kyeong-Jun ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 789~796
DOI : 10.13000/JFMSE.2014.26.4.789
This study was conducted to investigate the effects of feeding rate on growth performance, blood components and histology of growing olive flounder. The experiment was carried out to determine the optimum feeding rate of the fish (initial fish mean weight of
g) at the optimum water temperature. Two replicated groups of fish were fed commercial diet at the feeding rates of 0, 1.0, 1.65 and 2.3% body weight (BW)/day and satiation. Feeding trial was conducted under a flow-through system with ten 1.2 metric ton aquaria receiving filtered seawater at
for three weeks. Weight gain and specific growth rate (SGR) for fish fed to satiation were significantly higher than those for the unfed fish and for fish fed at 1.0 and 1.65% BW/day. There were no significant differences in values of such parameters between fish fed at 1.65% and those fed at 2.3% BW/day and between fish fed at 2.3% and those fed to satiation. Weight gain and SGR for the unfed fish were significantly lower than those for fish in the other treatments. All the tissues (hepatopancreas, kidney and anterior intestine) were in good condition in fish fed the experimental diet at different feeding rates. This result indicates that the optimum feeding rates of olive flounder (97-160 g) was approximately 2.52% BW/day at the optimum water temperature.
The Influence of Job Satisfaction Factors on Turnover of Marine Sports Employees
Ji, Sam-Up ; Kim, Tae-Soo ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 797~807
DOI : 10.13000/JFMSE.2014.26.4.797
The purpose of this research is to clarify the influence of job satisfaction factors on the turnover of marine sports employees and propose the methodical and scientific preliminary data suggesting the development of marine sports and policy direction. To achieve this research was conducted on 247 marine sports workers from February to March, 2013 and the findings are shown below. Firstly, male workers showed higher satisfaction rate in social recognition and salary. Female workers showed higher satisfaction in work conditions. Married workers with related license holders negative in promotion, but workers who are 50 and older with high school diploma showed higher satisfaction. Secondly, group of singles showed higher satisfaction rate in social recognition and peer relationship. People with related majors showed higher satisfaction in suitability, salary, peer relationship and social recognition. Thirdly, those who show higher satisfaction in social recognition, work condition, salary, suitability, and promotion are show a lower likelihood of changing their job.
Molecular Cloning, Expression Analysis and Enzymatic Characterization of Elastase-like Serine Protease from the Olive Flounder (Paralichthys olivaceus)
Han, Jin-Wook ; Seo, Jung-Soo ; Ahn, Sang-Jung ; Lee, Jin-Young ; Park, Ju-Hyeon ; Kim, Na-Young ; Kim, Moo-Sang ; Hwang, Jee-Youn ; Chung, Joon-Ki ; Lee, Hyung-Ho ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 808~822
DOI : 10.13000/JFMSE.2014.26.4.808
Quality Evaluation to Determine the Grading of Commercial Salt-Fermented Fish Sauce in Korea
Cho, Young-Je ; Lee, Hong-Hee ; Kim, Bo-Kyoung ; Gye, Hyeon-Jin ; Jung, Woo-Young ; Shim, Kil-Bo ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 823~830
DOI : 10.13000/JFMSE.2014.26.4.823
This study conducted to investigate the quality of commercial fish sauce and determine the grade of them by measuring the chemical compositions and biogenic amines. The commercial salt-fermented anchovy sauce contained 65.84-70.94% (mean : 68.39%) of moisture, 22.19-25.43% (24.22%) of salinity, 5.4-6.1 (5.8) of pH, 0.76-1.61%(1.18%) of total nitrogen, 478.52-924.66 mg/100 g (702.05 mg/100 g) of amino nitrogen and 584.59-1593.52 mg/kg of histamine. Whereas commercial salted-fermented sand lance sauces contained 66.63-71.99% (68.73%) of moisture, 23.9-25.5% (24.57%) of salinity, 5.5-6.4(6.16) of pH, 0.64-1.46% (1.07%) of total nitrogen, 433.51-1006.67 mg/100 g (665.36 mg/100 g) of amino nitrogen and 194.01-1839.68 mg/kg of histamine. Correlation of TN, AN and VBN containing nitrogen was high, but there was no significant correlation between these results and histamine. In total nitrogen content, 6 of the 20 fish sauces were less than Korea Food Standard. The eight samples were less than the amino nitrogen regulation of Korean Industrial Standard (KS). And 14 fish sauce were exceeded by 68% for moisture content standard of Korean Industrial Standard.
A Study on the Pressure and Velocity Distributions by POD Shape of Hydrofoil Vessel
Lee, Chun-Ki ; Lim, Tae-Woo ; Moon, Seong-Bae ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 831~837
DOI : 10.13000/JFMSE.2014.26.4.831
This paper focuses on the effects of the changes in the resistance characteristics caused by the changes of the POD shape installed in the Hydrofoil vessel, using the CFD(Computational Fluid Dynamics). We input the POD sections' basic shape as the origin of the x and y axis. Then as we cut the x-axis 0 to 2 cm, and the more we cut it, the total resistance value had increased. However, we have recognized the fact that as we cut the POD section, 3 to 5 cm, the resistance value had rather decreased. Furthermore we found out the result that as the cut partition was larger; the POD cross-section would decrease, resulting in the linear decrease of the viscous force.
Analysis on Development Strategy Alternatives of Jeju Cruise Tourism Industry
Kim, Mincheol ; Boo, Chang-San ; Kim, Joon-Taek ; Kang, Sook-Young ; Yang, Hyei-Sun ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 838~845
DOI : 10.13000/JFMSE.2014.26.4.838
The objective of this study was to propose the priorities among the possible development strategies that can activate the industry while the market potential of cruise tourism industry has been increasing. To achieve the research aim, the A'WOT (SWOT-AHP) method was adopted in this study focusing on Jeju cruise industry. As a result of analysis, the strength factor (0.421) was the most important thing among the proposed factors. And, opportunity (0.348), weakness (0.135), and threat (0.096) factors were calculated in turn. Based on the A'WOT analysis, the most urgent thing among the strategy alternatives was 'Installation of dedicated department for Jeju cruise industry'. Accordingly, this result can be utilized as the fundamental data in order to make an optimal decision following by the environmental changes in Jeju cruise industry.
A Study on the Improvement of the Aquaculture Evaluation Method by using AHP
Seo, Jong-Seok ; Seo, Wonchul ; Ock, Young-Seok ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 846~858
DOI : 10.13000/JFMSE.2014.26.4.846
The purpose of this study is to help domestic aquaculture farm by improved evaluation method. First, We analyzed evaluation method of domestic aquaculture certification, the greater retailer's supplier and global standard. Next, By using Analytic Hierarchy Process (AHP), We found priority and importance between criteria of SQF(Safety Quality Food) standard which is appled to alternative model for aquaculture evaluation. As a result is presented as follows: regarding pairwise comparison between System Element module and Good Aquaculture Practice(GAP) module, GAP is recognized to be more important than System Element. The highest priority criteria is presented 'Purchase and Use of Medications, Aquaculture Feeds and Aquaculture Chemicals.' Next, 'Management commitment', 'Attaining Food Safety', 'Location and Layout of Structures and Vessels', 'Stock Identification and Traceability are recognized high position. This study has major implications for research into development of evaluation method.
Optimum Dietary Lipid Level in Juvenile River Puffer Takifugu obscurus
Yoo, Gwangyeol ; Bai, Sungchul C. ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 859~867
DOI : 10.13000/JFMSE.2014.26.4.859
This study was conducted to evaluate the optimum dietary lipid level in juvenile river puffer. Five semi-purified diets were formulated with corn oil to contain graded levels of lipid levels of 6, 9, 12, 15 and 18%. Fish averaging
g randomly were fed the experimental diets in triplicate groups for 8 weeks. After the 8-weeks feeding trial, weight gain and specific growth rate of fish fed the 9% diet were significantly higher than those of fish fed the 15 and 18% diets (P<0.05) but there was not significantly different from that of fish fed the 6, 9 and 12% diets. Feed efficiency and protein efficiency ratio of fish fed the 6, 9 and 12% diets were significantly higher than those of fish fed the 18% diet (P<0.05). Visceralsomatic index of fish fed 18% diet was significantly higher than that of fish fed the 6% diet (P <0.05) but there was not significantly different from that of fish fed the 9, 12, 15 and 18% diets. No significant differences were observed in condition factor, hepatosomatic index and whole body composition among all the fish groups. Serum cholesterol and triglyceride fish fed of 18% diet were significantly higher than that of fish fed the other diets (P<0.05). Optimum dietary lipid levels by using broken-line model and by using second order polynomial were estimated at 7.01% and 8.98% for the maximum growth of fish respectively. Therefore, these results suggested that the optimum dietary lipid level could be greater than 7.01% but less than 8.98% for the maximum growth in juvenile river puffer.
Evaluation of the Optimum Dietary Protein to Energy Ratio in Juvenile River Puffer Takifugu obscurus
Yoo, Gwangyeol ; Bai, Sungchul C. ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 868~876
DOI : 10.13000/JFMSE.2014.26.4.868
This study was conducted to estimate the optimum dietary protein to energy (P/E) ratio in juvenile river puffer. Nine experimental diets were formulated with three energy levels and three protein levels at each energy levels. Three energy levels of 3000, 3750 and 4500 kcal diets were included at 45, 50 and 55% crude protein (CP) levels, respectively (45P3000, 45P3750, 45P4500, 50P3000, 50P3750, 50P4500, 55P3000, 55P3750 and 55P4500). Fish averaging
g randomly were fed the experimental diets in triplicate groups for 8 weeks. Weight gain of fish fed the 50P4500 diet were significantly higher than that of fish fed the 45P3000, 45P3750, 45P4500, 50P3000 and 50P3750 diets (P<0.05), but there was not significantly different from that of fish fed the 50P4500, 55P3750 and 55P4500 diets. Feed efficiency of fish fed the 50P4500 diet were significantly higher than that of fish fed the 45P3000, 45P3750, 45P4500, 50P3000 and 50P3750 diets (P<0.05), but there was not significantly different from that of fish fed the 50P4500, 55P3000, 55P3750 and 55P4500 diets. Protein efficiency ratio of fish fed the 45P3000 and 45P3750 diets was higher than that of fish fed 50P4500 and 55P4500, but there was not significantly different from that of fish fed the 45P3000, 45P3750, 45P4500, 50P3000, 50P3750, 55P3000 and 55P3750 diets. Based on weight gain, feed efficiency and specific growth rate, diets containing energy levels 4500 kcal/kg diet had an optimum P/E ratio of approximately 111 mg protein/kcal (50% crude protein) in juvenile river puffer.
The Gap of the Practice and the Needs for Improving Underachievers' Study Habits
Kang, Kyung-Sook ; Hahm, Seung-Yeon ; Noh, Jung-Eun ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 877~893
DOI : 10.13000/JFMSE.2014.26.4.877
The purpose of this research is to study the implementation of instructional practices and the needs for improving study habits of underachievers, as a preliminary research to develop improving program for underachievers' study habits. Firstly, past researches on the subject were analyzed to find out the concept and scope of study habits, and factors related to academic achievement. After arranging and integrating these factors, we have extracted the constructs and factors of improvement program for students' study habits. Secondly, the instructional practices in the field and needs for improvement program for students' study habits were analyzed through a survey. The online survey composed of structured questionnaire was conducted among teachers consisting of regular classroom teachers, special class teachers, school counselors, etc. The results were reflected in the contents and configuration of the program. The contents of survey was the degree of practice and needs of improvement program for students' study habits in schools, and the degree of practice and needs of standardized tests. According to the survey results, the efforts for improving the underachieved students' study habits were low level. This study focused on study habits showing high demands in the development of program and manual.
A Study on the Characteristics of Condensation Heat Transfer of Two-Phase Loop Thermosyphons
Park, Jong-Un ; Cho, Dong-Hyun ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 894~901
DOI : 10.13000/JFMSE.2014.26.4.894
This study concerns the performance of condensation heat transfer in two-phase loop thermosyphons. In the present work, R134a has been used as the working fluid. Liquid fill charge ratio defined by the ratio of working fluid volume to total internal volume of thermosyphon, heat flux and wind speed of condensation have been used as the experimental parameters. The results show that the filling rate of working fluid and heat flux are very important factors for the operation of two-phase loop thermosyphons. The optimum liquid fill charge ratio for the best condensation heat transfer rate was 80%.
An Analysis on Mathematic Classes using Flanders Category System
Lee, Yoon-Gyeong ; Lee, Joong-Kweon ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 902~914
DOI : 10.13000/JFMSE.2014.26.4.902
The purpose of this study is to provide useful information by analysis on mathematic classes for improve interactions between teacher and student using the Flanders Category System. For this, mathematic classes were observed by videotapes and recorded, 10 recorded videotapes were selected for analysis the property of linguistic interaction. The collected videotapes and records materials were transcribed by Advanced Flanders(AF) analysis program version 3.54. The detail investigated topics for studying are as follows. 1) What is the property of the Flanders 10 code analysis results? 2) What is the property of main and subsidiary linguistic flow of interaction? 3) What is the property of the Flanders index analysis results? The results of this study are as follow: 1) In Flanders 10 code analysis results, teacher's non-directive speaking is 12.76%, teacher's Indicative speaking is 50.28%, student's reactive speaking is 4.07%, student's voluntary speaking is 9.66%. 2) Among the 10 classes, 5 classes' main flow is 'ask convergent question
student's reactive speaking
ask convergent question', 2 classes' main flow is 'lecture
ask convergent question
student's reactive speaking
lecture', 3 classes' main and subsidiary flow is 'lecture
ask convergent question
work'. 3) In indices results, revised I/d ratio, student's speaking ratio, student question, wide answer ratio are higher than analysis standard and indirect ratio, teacher's question ratio are lower than analysis standard.
Optimum Dietary Protein level in Juvenile River Puffer Takifugu obscurus
Yoo, Gwangyeol ; Yun, Hyeonho ; Bai, Sungchul C. ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 915~922
DOI : 10.13000/JFMSE.2014.26.4.915
This study was conducted to evaluate the optimum dietary protein level in juvenile river puffer. Five semi-purified diets were formulated by using casein to contain graded levels of protein levels of 35, 45, 50, 55 and 65%. Fish averaging
were randomly assigned to one of five experimental diets in triplicate groups for 8 weeks. After the 8-weeks of feeding trial, weight gain and feed efficiency of fish fed 45, 50 and 55% diets were significantly higher than those of fish fed 35 and 65% diets (P<0.05). Protein efficiency ratio of fish fed the 35% diet was significantly higher than those of fish fed 65% diet (P<0.05), but there were no significant difference among those of fish fed 45, 50 and 55% diets. Specific growth rate of fish fed 50% diet was significantly higher than those of fish fed 35 and 65% diets (P<0.05), but there was no significant difference among those of fish fed 45, 50 and 55% diets. No significant differences were observed in condition factor, hepatosomatic index, visceralsomatic index and survival among those of fish fed all the diets. Optimum dietary protein levels by using broken-line model and by using second order polynomial were estimated at 45.9% and 51.6% for the maximum growth of fish respectively. Therefore, these results suggested that the optimum dietary protein level could be greater than 45.9% but less than 51.6% for the maximum growth in juvenile river puffer.
Relationship Between Parenting Attitude and Academic Achievement of Middle School Students : Moderating Effect of Individualism and Collectivism
Jeong, Gwang-Phil ; Lee, Hee-Yeong ; Choi, Tae-Jin ;
Journal of Fisheries and Marine Sciences Education, volume 26, issue 4, 2014, Pages 923~933
DOI : 10.13000/JFMSE.2014.26.4.923
The purpose of this study was to investigate the moderating effect of cultural disposition in the relationship between parenting and academic achievement. Five-hundred thirty five middle school students(male 247; female, 288) participated in this study, These students completed parenting scale and Individualism-Collectivism Scale. Academic achievement was calculated using academic scores from language, english, mathematics and science. Collected data were analyzed using multiple regression. The major findings of this study can be summarized as follows. First, parenting was significantly associated with academic achievement albeit weak. Second, influence of affective and autonomy parenting on academic achievement for both father and mother were not significant. Third, moderating effects of individualism were significant in only fathers' autonomy parenting. Fourth, moderating effects of collectivism were significant in fathers' affective parenting and autonomy parenting. These results were discussed in relation to pervious studies. Finally limitations were commented and future study were suggested.