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Stock assessment of the goldeyes rockfish Sebasetes thompsoni in the Ulleungdo area

  • HEO, Yo Won;LEE, Jae Bong;YANG, Jae Hyeong;LEE, Hae Won;CHA, Hyung Kee;ZHANG, Chang Ik
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.53 no.1
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    • pp.60-66
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    • 2017
  • This study researched the population of ecological characteristics of the goldeyes rockfish Sebasetes thompsoni sampled by gill net in the Ulleungdo area from February 2013 to February 2014 in order to assess the current stock status and provide scientific advice for management implementation. The instantaneous coefficient of total mortality (Z) was 0.78/year and the survival rate (S) was 0.459. The instantaneous coefficient of natural mortality (M) was 0.461/year. Based on the estimates of Z and M, the instantaneous coefficient of fishing mortality (F) was 0.318/year. The age at first capture ($t_c$) was 4.41/years. Current Yield-per-recruit (YPR) was 30.83 g, and fishing mortality at maximum YPR ($F_{max}$) and fishing mortality corresponding to 10% of the maximum slope in YPR curve ($F_{0.1}$) were 3.257/year and 0.673/year, respectively. $F_{35%}$ and $F_{40%}$, indicating fishing mortalities at 35% and 40% of maximum Spawning biomass-per-recruit (SBPR), were 0.619/year and 0.509/year, respectively. Based on the biological reference points, fishing mortality at overfished threshold yield ($F_{OTY}$) was calculated as 0.509/year. Current $SBPR/SBPR_{MSY}$ was 1.313 above 1.0, which means 'not overfishe,' while current $F/F_{OTY}$ was 0.629 below 1.0, which indicates 'not overfishing.' In conclusion, the current status of goldeyes rockfish was located in green zone (i.e., not overfished and not overfishing) according to the revised Kobe plot.

A Feasibility Study of Acupuncture for Chronic Pain in Patients with Osteoporotic Thoracolumbar Compression Fracture: A Prospective Case Series

  • Bae, Ji min;Choi, Ji won;Kim, Dae hun;Yang, Gi Young;Kim, Kun hyung
    • Journal of Acupuncture Research
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    • v.35 no.2
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    • pp.75-80
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    • 2018
  • Background: The aim of this study was to assess the feasibility of conducting a clinical study of using acupuncture for chronic pain in patients with osteoporotic thoracolumbar vertebral compression fractures (VCFs) in the outpatient setting. Methods: A prospective case-series attempting to recruit 20 participants was performed from February 11, 2016, to December 31, 2016. We provided Manual and electrical acupuncture was provided one 1 to three 3 times a week, for 6 weeks, up to 18 sessions. The primary clinical outcome was the average pain intensity as measured by the visual analog scale (VAS) at 6 weeks. Secondary outcomes included back-specific dysfunction (Oswestry disability index), quality of life (quality of life questionnaire-26), patient-reported improvement, use of other healthcare resources, and adverse events at 6 weeks. Use of healthcare resources and adverse events were additionally followed-up at 12 weeks by telephone. Results: Of 33 patients screened, a total of 7 were enrolled in the study. Manual and electrical acupuncture was provided 1 to 3 times a week, for 6 weeks, up to 18 sessions. We observed reduced pain intensity at 6 weeks in all participants. The change in the quality of life and back-specific dysfunction was inconsistent among participants. Mild, temporary adverse events were observed in three patients. Conclusion: In our clinical setting, it was not feasible to recruit sufficient participants and to assess the efficacy of acupuncture for chronic pain after osteoporotic thoracolumbar VCFs under a year. Strategies to improve recruitment and to identify barriers to participation are required for future clinical trials.

A Model of System Reformation for Specialization in Home Economics of Vocational High School in JellaNamdo (가사ㆍ실업계열 특성화 고등학교의 체제 개편 모델 - 전라남도를 중심으로 -)

  • 유명의;서리나
    • Journal of Korean Home Economics Education Association
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    • v.14 no.3
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    • pp.11-24
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    • 2002
  • This study was to propose a basic model of specialization in home economics for vocational high school development in JellaNamdo. The results were summarized as follows. First. based on the changes in economic environment into service industry and national educational policy and local vocational educational Policy, it may be good time to socially discuss special vocational high school in home economics in JellaNamdo in the light of meeting local students' demand. Secondly, considering local students' preference and the conditions of local economy and industry. Thirdly, the system for specialization in home economics of vacational high school may be suggested. The basic model was organized plans of system reformation by stages, a substantial plans, and academic or employment course development. System reformation plans was that the high school-concentrated district should be first selected by area and department and one high school should be selected as special high school in home economics. Then specific method should proceed school name, the measure to recruit students, specific method for reorganizing department. and curriculum. Finally, the annual plan to establish new department and to recruit students should be Prepared. Substantial plans were to actually forward such methods to reorganize system and to enhance the qualify of vocational high school education. the method for making substantial should be studied further It may include: the methods to ensure special teachers, training room, and facilities. the prospect and direction of career development, employment, or initiation, special research, and the application to educational environment. Employment courses were developed SOHO establishment in small capital and special store management. And academic courses was to enter a collage or university in conjunction with major departments.

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Simulation-based Yield-per-recruit Analysis of Chub Mackerel Scomber japonicus in Korean Waters (모의실험을 통한 한국 연근해 고등어(Scomber japonicus)의 가입당 생산 분석)

  • Lee, Kyunghwan;Go, Seonggil;Jung, Sukgeun
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.51 no.3
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    • pp.313-320
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    • 2018
  • Chub mackerel Scomber japonicus is an economically important pelagic species in the western North Pacific. In the last 50 years, the annual total catch in Korean waters showed large fluctuations, ranging from 100 to $420{\times}10^3tons$. To provide a biological reference point for management of chub mackerel, we applied a simulation-based yield-per-recruit (Y/R) model that considered both temperature-dependent growth and size-dependent mortality. We estimated the fisheries yield with respect to varying biological reference points and environmental conditions, including 1) the instantaneous rate of fishing mortality (F), 2) length of fish at first capture ($L_c$), and 3) water temperature. The result of our analysis showed that the Y/R could be greatest when the $L_c$ ranges from 19-27 cm and F ranges from $1.48-2.00yr^{-1}$. Y/R increases with increased water temperature between 15 and $23^{\circ}C$. We suggest targeting an $L_c$ of 17 cm (age=0.6 years) under the assumed current of $F=0.48yr^{-1}$ for maximizing the chub mackerel harvest. Further analysis considering spawning and recruitment processes are required to provide biological reference points to ensure the sustainability of chub mackerel fisheries in Korean waters.

과학영재학교 우수교원 확보를 위한 영재교육 관련 법 개선 방안

  • 김종득;문경근;정병훈;박은영
    • Journal of Gifted/Talented Education
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    • v.14 no.2
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    • pp.101-129
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    • 2004
  • It is very essential to recruit professional teachers for Gifted Education because the main goals of this school are focusing on the highly advanced technical science fields, enhancing self study and research environment which leads to develop self-directed learning and creative learning. The purpose of this study is to improve of the current Gifted Education Action Law For Teacher Recruitment in Gifted Education. The results of this study are follows; 1. Establishment of Standards for Teachers' Qualification in Gifted Education To recruit professional teachers, they are studied to use the current Gifted Education Action Law and to converse the legal position of Busan Science Academy 2. Developing Professionalism and Improving Conditions of Employment To gualify for Gifted Education, it is necessary to developing professionalism and improving conditions of employment. To provide long-term training and a sabbatical year for research. To make able teachers teach in a school longer than other teachers if teachers agree to it. To pay research funds for teachers for gifted education. To give advantage for gifted teachers in promotion. As the result of study, it has been systemized the standards of recruiting qualified teachers of the Science School for Gifted, has been proposed the ways of developing specialty of teachers and working conditions.

Representative of Sample and Efficiency of Estimation (표본의 대표성과 추정의 효율성)

  • Kim, Kyu-Seong
    • Survey Research
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    • v.6 no.1
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    • pp.39-62
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    • 2005
  • In this paper we investigate some concepts frequently called in sample surveys such as 'representative of sample' as well as 'consistency', 'unbiasedness', and 'efficiency' in estimation. The first is strongly related with sampling procedure including coverage rate of survey population, response rate in establishment survey, and recruit rate of final samples. The others, however, are concerned with both sampling design and corresponding estimators simultaneously. Whereas both consistency and unbiasedness are based on the representative sample, efficiency does not depend on the representative sample. The representative of sample can be increased by raising the rate of coverage, response and recruit as well. Consistency may be investigated according to variables of interest and auxiliary variables. The well-known raing-ratio weighting method is a method to increase consistency of auxiliary variables by means of matching population size in each cell. Efficiency is not directly related with the representative of sample, and allocation methods such as proportional and Neyman allocation in stratified sampling and post-stratification are all methods to increase the efficiency of estimation under the condition of satisfying the representative of sample.

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Development of Recruit Information Systems based on Mashup (매시업 기반 취업 정보 시스템 개발)

  • Kim, Jeong-Joon
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.17 no.2
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    • pp.159-164
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    • 2017
  • Existing employment information system is the result of a number of lists list exists is difficult to determine at a glance when a user searches for a desired jobs. The service used for the strengthening and enhancement of job satisfaction, job seekers in the problems of the existing system, there is a need to improve measures for improving the quality of the environment. In this paper, we developed a system using a mashup Jobs feature that allows users to easily and conveniently search the various regions, the conditions specific jobs you want on the web map. In this paper, we collect the RSS of employment related information from many employment information providers, and we have a mashup function that makes it easy and convenient to search various regional and conditional job information desired by the user on the web map I have developed a job information system that I used.

Population Dynamics of Corbicula ( Corbicula) japonica Prime from Namdae Stream in Yangyang, Korea (강원도 양양 남대천에서 채집된 일본재첩, Corbicula (Corbicula) japonica Prime의 수산자원학적 연구)

  • Kwon Dae Hyeon;Kang Yong Joo;Kim Wan Ki;Lee Chae Sung
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.35 no.6
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    • pp.686-695
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    • 2002
  • Samples of Corbicula ( Corbicula) japonica Prime of Namdae Stream in Gangnung were collected from November 2000 to October 2001. Age of C. (C.) japonica was determined from the rings on the shell, The shell length of the samples ranged from 8 mm to 38 mm. The ring on the shell was formed once a year in March. Von Bertalanffy's growth parameters were estimated using a nonlinear regression method, asyinptotie shell length ($L_{\omega}$) was 48,98 mm, K was 0.20421year, theoretical age at 0 shell length $(t_0)$ was 0.3169 year, and asymptotic total weight ($W_{\omega}$) was 41.37 g. The formula of allomeky between shell length (L, mm) and total weight (W, g) of the brackish water clam was W=3.42$\times$10^{-4}L^{3}. The annual survival rate was estimated at 0.3799, instantaneous coefficient of natural mortality was 0.5007/year, and instantaneous coefficient of fishing mortality was 0.46721year. The age at first capture was estimated at 2.1593 year using shell length compositions of the brackish water clam, The current yield-per-recruit at 0.4672/year of fishing mortality was 0.6595 g. F_0.1 was estimated at 0.1865/year, Acceptable biological catch was estimated at 14.4 metric ton.

Researcher and Research Area Recommendation System for Promoting Convergence Research Using Text Mining and Messenger UI (텍스트 마이닝 방법론과 메신저UI를 활용한 융합연구 촉진을 위한 연구자 및 연구 분야 추천 시스템의 제안)

  • Yang, Nak-Yeong;Kim, Sung-Geun;Kang, Ju-Young
    • The Journal of Information Systems
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    • v.27 no.4
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    • pp.71-96
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    • 2018
  • Purpose Recently, social interest in the convergence research is at its peak. However, contrary to the keen interest in convergence research, an infrastructure that makes it easier to recruit researchers from other fields is not yet well established, which is why researchers are having considerable difficulty in carrying out real convergence research. In this study, we implemented a researcher recommendation system that helps researchers who want to collaborate easily recruit researchers from other fields, and we expect it to serve as a springboard for growth in the convergence research field. Design/methodology/approach In this study, we implemented a system that recommends proper researchers when users enter keyword in the field of research that they want to collaborate using word embedding techniques, word2vec. In addition, we also implemented function of keyword suggestions by using keywords drawn from LDA Topicmodeling Algorithm. Finally, the UI of the researcher recommendation system was completed by utilizing the collaborative messenger Slack to facilitate immediate exchange of information with the recommended researchers and to accommodate various applications for collaboration. Findings In this study, we validated the completed researcher recommendation system by ensuring that the list of researchers recommended by entering a specific keyword is accurate and that words learned as a similar word with a particular researcher match the researcher's field of research. The results showed 85.89% accuracy in the former, and in the latter case, mostly, the words drawn as similar words were found to match the researcher's field of research, leading to excellent performance of the researcher recommendation system.

Physiological and psychological effects of forest healing focused on plant fragrance therapy for maladjusted soldiers

  • Kim, Jihye;Sin, Changseob;Park, Jong-ok;Lee, Hyunchae;Kim, Jihye;Kim, Dohyeong;Kim, Sanghee
    • Journal of People, Plants, and Environment
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    • v.24 no.4
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    • pp.429-439
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    • 2021
  • Background and objective: This study verified the physiological and psychological effects of plant fragrance therapy to analyze whether the therapy has a forest healing effect on maladjusted soldiers. Methods: This study was conducted from March 14 to May 31, 2020 according to the Green Camp curriculum for 2 weeks per recruit class. Thus, plant fragrance therapy was implemented twice each for three recruit classes. Each session of the program was carried out for 4 hours from 1 p.m. to 5 p.m. The venue was the garden within the camp and the forest nearby. Forest healing activities using plant fragrances were led by 1 forest education specialist and 1 assistant. The effects of plant fragrance therapy for maladjusted soldiers were analzed analyzed by quantifying physiological and psychological changes through measuring brain waves and stress levels before and after the therapy. Results: As a result of analyzing BRQ and SQ to determine the physiological and psychological healing effect of plant fragrance therapy, both the left and right brain showed higher BRQ and SQ after the therapy with statistical significance. This indicates that plant fragrance therapy on maladjusted soldiers helped positively stabilize their negative psychological and behavioral dispositions, and stabilization of brain waves lowered physical and mental stress and improved self-regulation and immunity. On the other hand, there was no significant difference in ATO. This is the result of analyzing the stress-coping mechanism. Troubleshooting (t = -2.702, df = 61, p = .009), emotional remission (t = -2.173, df = 61, p = .034), pursuit of help (t = -3.286), df = 61, p = .002), and wishful thinking (t = -3.714, df = 61, p < .001) showed statistically significant results. Conclusion: Applying plant fragrance therapy to maladjusted soldiers positively stabilized their negative psychological and behavioral dispositions and helped their self-regulation. Thus, plant fragrance therapy has psychological and physical forest healing effect on maladjusted soldiers.