Pub Date : 2023-06-30DOI: 10.13000/jfmse.2023.35.3.592
Keun-Hyoung KIM, Suk-Jong KIM
This study is aimed to improve the sinker that is the sinking material of the offshore small yellow croaker drift gill net currently used in the field so that the sinker line of the net can float while maintaining a distance from marine wastes deposited on the seabed. Therefore, targeting the offshore small yellow croaker drift gill net equipped with the improved sinking material to prevent the damage or loss of the fishing gear, this researcher figured out the development characteristics of the attachment according to the improvement of the sinking material and carried out marine tests to analyze and investigate that. According to the results of the tests other than the fifth and sixth tests conducted according to water depth over time, in the range(0 ≤ R² ≤ 0.4), the FS and SFL seem to influence the changing water depth over time insufficiently. It would be okay to attach the floor line to the offshore small yellow croaker drift gill net because the way of development is not different from the previous one. When R² comes closer to 1, the change of water depth influences the FS and SFL of the offshore small yellow croaker drift gill net equipped with the floor line significantly. And when it comes closer to zero, the floor line influences the FS and SFL of the offshore small yellow croaker drill gill net insignificantly. Also, Nets are divided into the offshore small yellow croaker drift gill nets equipped with the floor line with the width of 200 and the offshore small yellow croaker drift gill nets with the width of 300 previously used to figure out the replacement of the nets. According to the findings, the offshore small yellow croaker drift gill nets equipped with the floor line indicate a very low replacement rate as 2.4% out of the total amount of the nets.
{"title":"A Basic Study on the Sinking Material Improvement for Offshore Small Yellow Croaker Drift Gill Net Fishing Gear","authors":"Keun-Hyoung KIM, Suk-Jong KIM","doi":"10.13000/jfmse.2023.35.3.592","DOIUrl":"https://doi.org/10.13000/jfmse.2023.35.3.592","url":null,"abstract":"This study is aimed to improve the sinker that is the sinking material of the offshore small yellow croaker drift gill net currently used in the field so that the sinker line of the net can float while maintaining a distance from marine wastes deposited on the seabed. Therefore, targeting the offshore small yellow croaker drift gill net equipped with the improved sinking material to prevent the damage or loss of the fishing gear, this researcher figured out the development characteristics of the attachment according to the improvement of the sinking material and carried out marine tests to analyze and investigate that. According to the results of the tests other than the fifth and sixth tests conducted according to water depth over time, in the range(0 ≤ R² ≤ 0.4), the FS and SFL seem to influence the changing water depth over time insufficiently. It would be okay to attach the floor line to the offshore small yellow croaker drift gill net because the way of development is not different from the previous one. When R² comes closer to 1, the change of water depth influences the FS and SFL of the offshore small yellow croaker drift gill net equipped with the floor line significantly. And when it comes closer to zero, the floor line influences the FS and SFL of the offshore small yellow croaker drill gill net insignificantly. Also, Nets are divided into the offshore small yellow croaker drift gill nets equipped with the floor line with the width of 200 and the offshore small yellow croaker drift gill nets with the width of 300 previously used to figure out the replacement of the nets. According to the findings, the offshore small yellow croaker drift gill nets equipped with the floor line indicate a very low replacement rate as 2.4% out of the total amount of the nets.","PeriodicalId":496496,"journal":{"name":"Su'san haeyang gyoyug yeon'gu","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136154436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.13000/jfmse.2023.6.35.3.421
Hee-Woong KANG, In Joon HWANG, Jong Cheol HAN, Jin CHOI
We investigated the survival followed long period of transplantation, growth performance in indoor tank of juvenile sablefish. Transplantation time was about 43-45 hours and optimal transportation condition of A. fimbria juvenile (TL 3-5 cm, BW 0.2-0.8 g) was 2.9-3.7℃, 31.3-33.4 mg/L (DO) and 28.7 psu. Juvenile sablefish (18.9±0.7 g) were randomly placed in nine experimental tanks, each containing 300 L of water, at 10 individuals/tank. Juveniles were assigned to three treatments (6, 9 and 12℃) in triplicates. After eight weeks, growth performance (weight gain and specific growth rate) of juveniles was increased water temperature-dependently among three treatments. In the rearing of juvenile in indoor tank, salbefish showed a rapid growth with total length (TL) with 49.1±3.0 cm and body weight (BW) with 1,073.2±262.4 g with water temperature 7.2-16.9℃ after 17 months of rearing. The relationship between BW and TL was BW=0.005TLSUP3.1177/SUP (r²=0.9971). Condition factor was 8.0±1.3. There results suggest that the range of optimum water temperature for juvenile growth was 12-16℃. In addition, the present study demonstrates that sablefish would be a possible aquaculture species under indoor-rearing condition in Korea.
{"title":"Survival Rate with Long Distance Transplantation and Growth Performance of Sablefish Juvenile, Anoplopoma fimbria","authors":"Hee-Woong KANG, In Joon HWANG, Jong Cheol HAN, Jin CHOI","doi":"10.13000/jfmse.2023.6.35.3.421","DOIUrl":"https://doi.org/10.13000/jfmse.2023.6.35.3.421","url":null,"abstract":"We investigated the survival followed long period of transplantation, growth performance in indoor tank of juvenile sablefish. Transplantation time was about 43-45 hours and optimal transportation condition of A. fimbria juvenile (TL 3-5 cm, BW 0.2-0.8 g) was 2.9-3.7℃, 31.3-33.4 mg/L (DO) and 28.7 psu. Juvenile sablefish (18.9±0.7 g) were randomly placed in nine experimental tanks, each containing 300 L of water, at 10 individuals/tank. Juveniles were assigned to three treatments (6, 9 and 12℃) in triplicates. After eight weeks, growth performance (weight gain and specific growth rate) of juveniles was increased water temperature-dependently among three treatments. In the rearing of juvenile in indoor tank, salbefish showed a rapid growth with total length (TL) with 49.1±3.0 cm and body weight (BW) with 1,073.2±262.4 g with water temperature 7.2-16.9℃ after 17 months of rearing. The relationship between BW and TL was BW=0.005TLSUP3.1177/SUP (r²=0.9971). Condition factor was 8.0±1.3. There results suggest that the range of optimum water temperature for juvenile growth was 12-16℃. In addition, the present study demonstrates that sablefish would be a possible aquaculture species under indoor-rearing condition in Korea.","PeriodicalId":496496,"journal":{"name":"Su'san haeyang gyoyug yeon'gu","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136155710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.13000/jfmse.2023.35.3.451
Min-Jae KIM, Kyoung-Yul LEE
Twenty five obese elementary school students were participated in this study. The students in the exercise group participated in an exercise program that applied T-ball, sports dodgeball, and chuke ball three times a week and 60 minutes a day for 12 weeks. The following conclusions were obtained as a result of examining the effects of the exercise program on physical fitness and obesity factors. First, weight and BMI in body composition decreased after participating 12 weeks of after school new sports exercise program. Second, among physical fitness factors, flexibility, power, and muscle strength. Third, in the obesity factors, Leptin decreased and Adiponectin increased, and Ghrelin decreased in the exercise group, but increased in the control group. In the consideration of results of this study, new sport activities are found to improve body composition among obese elementary school girls and to have positive effects on physical fitness and obesity-related hormone factors. Therefor, new sport activities need to be recommended to school-age obese children for their recognition of the importance exercise and life long participation in exercise by forming exercise habits in early age.
{"title":"The Effect of After School Exercise New Sports Exercise Program on Physical Fitness and Obesity Factors among Obese Girls in Elementary School","authors":"Min-Jae KIM, Kyoung-Yul LEE","doi":"10.13000/jfmse.2023.35.3.451","DOIUrl":"https://doi.org/10.13000/jfmse.2023.35.3.451","url":null,"abstract":"Twenty five obese elementary school students were participated in this study. The students in the exercise group participated in an exercise program that applied T-ball, sports dodgeball, and chuke ball three times a week and 60 minutes a day for 12 weeks. The following conclusions were obtained as a result of examining the effects of the exercise program on physical fitness and obesity factors. First, weight and BMI in body composition decreased after participating 12 weeks of after school new sports exercise program. Second, among physical fitness factors, flexibility, power, and muscle strength. Third, in the obesity factors, Leptin decreased and Adiponectin increased, and Ghrelin decreased in the exercise group, but increased in the control group. In the consideration of results of this study, new sport activities are found to improve body composition among obese elementary school girls and to have positive effects on physical fitness and obesity-related hormone factors. Therefor, new sport activities need to be recommended to school-age obese children for their recognition of the importance exercise and life long participation in exercise by forming exercise habits in early age.","PeriodicalId":496496,"journal":{"name":"Su'san haeyang gyoyug yeon'gu","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136154190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.13000/jfmse.2023.6.35.3.635
Won-Sik WOO, Gyoungsik KANG, Kyung-Ho KIM, Ha-Jeong SON, Min-Young SOHN, Hyun-Ja HAN, Chan-Il PARK
Interferon regulatory factors (IRFs) exhibit antiviral and antibacterial capabilities. In this research, we isolated the IRF10 genes from red sea bream (Pagrus major) and examined their expression following red sea bream iridovirus (RSIV) infection. Analysis of multiple sequences identified preserved components, such as the IRF-association domain, nuclear localization signal, and DNA-binding domain. Phylogenetic examination showed that PmIRF10 grouped with IRF10 equivalents in fish. We utilized quantitative real-time PCR to explore IRF10 expression in normal tissues, revealing increased expression levels in the gill and spleen. Our results indicate that PmIRF10 plays a role in the immune response, as evidenced by the controlled expression levels of IRFs after RSIV infection in red sea bream. This finding aligns with prior research on different fish species. Overall, this investigation characterizes IRF genes in red sea bream and provides a basis for comparative analysis of IRF genes.
{"title":"Molecular Characterization of Interferon Regulatory Factor 10 in Red Sea Bream (Pagrus major) and Expression Analysis Following RSIV Infection","authors":"Won-Sik WOO, Gyoungsik KANG, Kyung-Ho KIM, Ha-Jeong SON, Min-Young SOHN, Hyun-Ja HAN, Chan-Il PARK","doi":"10.13000/jfmse.2023.6.35.3.635","DOIUrl":"https://doi.org/10.13000/jfmse.2023.6.35.3.635","url":null,"abstract":"Interferon regulatory factors (IRFs) exhibit antiviral and antibacterial capabilities. In this research, we isolated the IRF10 genes from red sea bream (Pagrus major) and examined their expression following red sea bream iridovirus (RSIV) infection. Analysis of multiple sequences identified preserved components, such as the IRF-association domain, nuclear localization signal, and DNA-binding domain. Phylogenetic examination showed that PmIRF10 grouped with IRF10 equivalents in fish. We utilized quantitative real-time PCR to explore IRF10 expression in normal tissues, revealing increased expression levels in the gill and spleen. Our results indicate that PmIRF10 plays a role in the immune response, as evidenced by the controlled expression levels of IRFs after RSIV infection in red sea bream. This finding aligns with prior research on different fish species. Overall, this investigation characterizes IRF genes in red sea bream and provides a basis for comparative analysis of IRF genes.","PeriodicalId":496496,"journal":{"name":"Su'san haeyang gyoyug yeon'gu","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136155468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.13000/jfmse.2023.6.35.3.569
Yeo-Hyun YOON, Won-Ok LEE
The aim of this study was to investigate the direction of career guidance for young job seekers by examining the relationships between global citizenship, vocational values, cruise crew vocational image, and career identity. A survey was conducted on young job seekers who prefer the service industry, and the measurement variables were analyzed for their structural relationships. The results indicate that, first, social responsibility and global competence, among the dimensions of global citizenship, did not have a significant effect on vocational values. Second, global civic engagement had a significant positive effect on vocational values. Third, vocational values had a significant positive effect on cruise crew
{"title":"The Effects of Global Citizenship, Vocational Value, Cruise Crew’s Vocational Image on Career Identity:For aspiring young individuals seeking employment in the service industry","authors":"Yeo-Hyun YOON, Won-Ok LEE","doi":"10.13000/jfmse.2023.6.35.3.569","DOIUrl":"https://doi.org/10.13000/jfmse.2023.6.35.3.569","url":null,"abstract":"The aim of this study was to investigate the direction of career guidance for young job seekers by examining the relationships between global citizenship, vocational values, cruise crew vocational image, and career identity. A survey was conducted on young job seekers who prefer the service industry, and the measurement variables were analyzed for their structural relationships. The results indicate that, first, social responsibility and global competence, among the dimensions of global citizenship, did not have a significant effect on vocational values. Second, global civic engagement had a significant positive effect on vocational values. Third, vocational values had a significant positive effect on cruise crew","PeriodicalId":496496,"journal":{"name":"Su'san haeyang gyoyug yeon'gu","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136155469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.13000/jfmse.2023.6.35.3.526
Wang Chen, Mi-Hyun PARK, Gyun HEO
This study investigated the satisfaction of international students in Korea and analyzed the level of satisfaction in various dimensions such as education platform, studying environment, the guidance of instructors, and learners. As a result, 51.32% responded ‘mostly satisfied’, with 24.15% as ‘relatively satisfied’, 18.49% as ‘moderate’, 3.4% as ‘relatively unsatisfied’, and 2.64% as ‘very unsatisfied . The average value of satisfaction was 4.18. The average value of willingness to continue online education after the end of COVID-19 was 3.77, with 7.92% responded ‘strongly disagree’, 8.30% for ‘mildly disagree’, 23.40’% for mostly agree’, 20.00% for ‘relatively agree’, and 40.38% for ‘strongly agree’. In conclusion, international students are basically satisfied with the online education, but there are rooms for improvement in quality of online education. Also, the compounded education of online and offline needs to be further studied.
{"title":"A Study on the Satisfaction and Improvement Plan of Online Learning of Domestic Students : Focusing on Chinese Students","authors":"Wang Chen, Mi-Hyun PARK, Gyun HEO","doi":"10.13000/jfmse.2023.6.35.3.526","DOIUrl":"https://doi.org/10.13000/jfmse.2023.6.35.3.526","url":null,"abstract":"This study investigated the satisfaction of international students in Korea and analyzed the level of satisfaction in various dimensions such as education platform, studying environment, the guidance of instructors, and learners. As a result, 51.32% responded ‘mostly satisfied’, with 24.15% as ‘relatively satisfied’, 18.49% as ‘moderate’, 3.4% as ‘relatively unsatisfied’, and 2.64% as ‘very unsatisfied . The average value of satisfaction was 4.18. The average value of willingness to continue online education after the end of COVID-19 was 3.77, with 7.92% responded ‘strongly disagree’, 8.30% for ‘mildly disagree’, 23.40’% for mostly agree’, 20.00% for ‘relatively agree’, and 40.38% for ‘strongly agree’. In conclusion, international students are basically satisfied with the online education, but there are rooms for improvement in quality of online education. Also, the compounded education of online and offline needs to be further studied.","PeriodicalId":496496,"journal":{"name":"Su'san haeyang gyoyug yeon'gu","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136155707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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