• Title/Summary/Keyword: specialization

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Spermiogenosis and fine structure of the sertoli cell junctional specialization in the Jindo dog II. Fine structure of the sertoli cell junctional specialization (진도견(珍島犬)의 정자형성(精子形成)과 Sertoli세포(細胞) 특수(特殊) 연접부(連接部)의 미세구조(微細構造) II, Sertoli 세포(細胞) 특수(特殊) 연접부(連接部)의 미세구조(微細構造))

  • Park, Young-seok;Lee, Jae-hong
    • Korean Journal of Veterinary Research
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    • v.32 no.3
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    • pp.295-308
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    • 1992
  • In order to study on the Sertoli cell, we attempt have been made to measure the average number of each germ cells per Sertoli cell on the 12 stages of cycle in matured korean Jindo dog. The fine structure of Sertoli cell junctional specialization was studied with electron microscope. The results were summarized as follows; 1. The average number of various germ cells associated with Sertoli cell was 9.77 to 13. 80 through stages of cycle and the total average number was 11.62. 2. Sertoli-Sertoli cell junctional specialization was present in seminiferous epilthelium, and Sertoli-spermatid cell junctional specialization rose from stage 8 spermatid, persisted to step 13 spermatid and then disappeared. The structure of Sedoli-spermatid cell juncticnal specialization was not similar to that of Sertoli cxlls. 3. Just after spermiation, free-surface of Sertoli-spermatid cell junctional specialization was replaced by Sertoli cell cytoplasm with tubulobulbar complex at the neiglaboring region observed. 4. The Sertoli cell process was located within the cytoplasm of late stage spermatids. Some membranes of residual body and spermatid cytoplasm partly disappeared, resulting in opening of the cytoplasm of spermatid into that Sertoli cell. This fact suggested that spermatid cytoplasm was partly eliminated.

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Relationship between Recreation Specialization of Bicycle Riders and Purchase Decision Factors for Bicycle Products (자전거 라이더들의 레크리에이션 전문화와 제품구매 결정요인의 관계)

  • Song, Kang-Young
    • The Journal of the Korea Contents Association
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    • v.12 no.12
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    • pp.413-426
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    • 2012
  • The purpose of this study was to investigate the relationship between recreation specialization of bicycle riders and purchase decision factors for bicycle products. A total of 351 respondents were selected using the stratified sampling method. From the statistical analyses, two meaningful results were extracted. First, there were significant difference in specialization sub-factors and purchase decision factors on the base of demographical characteristics. Specially, riding club participants were most different from non-participants in all factors. Second, some specialization sub-factors influenced some purchase decision factors positively, or negatively. In special, emotional specialization had positive effects most significantly on many factors of purchase decision. Cognitive specialization, however, had no any effect on purchase decision factors. Moreover, behavioral specialization had negative effects on some purchase decision factors.

A Study on Policies and Future Directions in Library Specialization (도서관의 특성화 정책과 방향에 관한 연구)

  • Noh, Younghee;Shin, Youngji;Kwak, Woojung
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.28 no.3
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    • pp.241-271
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    • 2017
  • The present study investigates domestic and foreign cases of library specialization, and specialization policies, areas, and effects in order to delineate future directions for research on the subject. The results of the study indicated that library specialization policies have been implemented in Korea and other countries. In Korea, a short-term policy was implemented in 1998, designating 13 special libraries, nine of which are currently in operation. Regarding types and directions of specialization, specialization of collections was found in many cases. Regional representative libraries were also found to have designated specific subjects they focus individually in terms of collections and services while providing services in subject areas. The future directions include research in qualifications and competence of professionals employed in special libraries, and in user satisfaction and needs to inform libraries' efforts for specialization.

An Analysis of Diversity and Specialization of Rural Amenity Resources - Case By Chungcheongnamdo Province - (농촌 어메니티자원의 다양성과 특화도 분석 - 충청남도 시군단위를 대상으로 -)

  • Chang, Woo Seok;Jung, Nam Su
    • Journal of Korean Society of Rural Planning
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    • v.20 no.3
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    • pp.33-43
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    • 2014
  • The Purpose of this study is to analyze of Specialization and Diversity of Rural Amenity Resources Planning. It will be performed analysis of the degree of specialization and diversity in each city and district of Chungcheongnam-do Province. Specialization and diversity indices were calculated by separately category of rural amenity resources into natural, cultural, and societal resources. The results of calculating the specialization degree of rural amenity resources based on a location index showed that eleven regions (Asan City, Buyeo District, Gyeryong City, Gongju City, Nonsan City, Boryeong City, Seocheon District, Seosan City, Seajong District, Cheongyang District and Yesan City) specialized in natural resources; four regions (Geumsan District and Hongseong Distriect) specialized in cultural resources; and six regions (Dangjin District, Cheonan City) specialized in societal resources. Examining resource specialization degrees by regions, there was a high number of regions specialized in natural and societal resources while those specialized in cultural resources were the rarest. Examining the calculation results for the tendency of resource specialization degree by areas showed that, with natural and cultural resources specialized regions, the average specialization degree showed a clear distinction with a 2.19 natural resource specialization degree and a 2.05 societal resource degree; However, in contrast, areas specialized in cultural resources-with an average degree of 1.52-were judged as not being especially more specialized than the average degree of Chungcheongnam-do Province. Also, there was seen a great gap between regions with high diversity and regions with low diversity of rural amenities, and measures to solve this difference is required.

Tendency and Future Study of Recreation Specialization Research (레크리에이션 전문화 연구동향: 성과와 과제)

  • Lee, Mun-Jin;Lee, Yeon-Ju
    • The Journal of the Korea Contents Association
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    • v.10 no.11
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    • pp.403-413
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    • 2010
  • The purpose of this study is to summarize study trend and achievements of recreation specialization, introduced to Korea in 1996 and recently started to be discussed a lot, and to state the problems and future development. Data related to recreation specialization were collected by using the database of KISS and RISS and 34 studies were utilized for the analysis. The studies were classified into six types; type I-introduction and proposal, type T-study tendency of recreation specialization in foreign countries, type U-quantitative studies using uni-dimensional approach to recreation specialization, type M-quantitative studies using multi-dimensional approach to recreation specialization, type Q-qualitative studies, and type S-variable relations using SEM. One of the problems found in the studies is that recreation specialization is still analyzed by using uni-dimensional approach to recreation specialization. Second, measures directly translated from foreign studies need to be verified the validity. In addition, domestic studies tend to simply follow foreign studies. Lastly, the studies lack variety(diversity) of research methods and researchers. The authors of this study argue that researchers must develop measures appropriate to Korean culture and diversify the research subjects and study methods.

Analysis of Changes in the Industrial Structure by the Ageing Rate in Korea (고령화율에 따른 농촌지역 산업구조 변화 분석)

  • Kwon, Younghyun J.;Kim, Euijune
    • Journal of Korean Society of Rural Planning
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    • v.20 no.4
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    • pp.183-192
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    • 2014
  • The purpose of this study is to examine the effect of regional ageing rate to industrial structures of rural areas in Korea. This paper shows that there are cause-effect relations between the industrial specialization and ageing rate in 'Agriculture', 'Finance & Insurance', and 'Real Estate & Leasing' sectors. The ageing levels are classified into ageing society, aged society, and super-aged society according to UN standard that cause different impacts on industrial specialization of regions. This paper finds that the industrial specialization is determined by the ageing levels. If there is an increase in ageing rate by 1% in ageing society, the industrial specialization of the three industries could be strengthened by 0.14%. But, ageing rates have negative impacts on the industrial specialization in aged society and super-aged society by 0.76% and by 1.20%, respectively, as increasing ageing rate by 1%. As the ageing rate progresses, 'Agriculture', 'Finance & Insurance' and 'Real Estate & Leasing'sectors have positive impacts on the industrial specialization in the ageing society. But 'Finance & Insurance' and 'Real Estate & Leasing' sectors have changed into negative impacts on the industrial specialization in the aged society. In the aged society, the employment of elderly persons of 'Agriculture' and 'Finance & Insurance' sectors increase by 1% makes positive impact on the industrial specialization by 1.54%, by 0.45%, respectively. The result of this paper can be applied to a significant guideline at establishing regional employment planning such as elderly customized employment, vocational training for rural areas, where above 14% of ageing rate.

Smart specialization의 정책적 유용성에 관한 이론적 고찰

  • Sin, Sang-U;Park, Jeong-Ho
    • Proceedings of the Korea Technology Innovation Society Conference
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    • 2017.05a
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    • pp.309-333
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    • 2017
  • Smart specialization은 새로운 산업정책의 유용한 아이디어임에도 불구하고 이론적 논의는 소극적이었다. 이 글은 smart specialization에 관한 논의는 관련문헌에 비해 어떠한 새로운 관점을 제시하고 있으며, 또한 어떠한 이론적인 관련성과 정책정 유용성을 가지는가에 대하여 비판적으로 검토하기로 한다. 먼저, 스마트 전문화의 핵심적인 개념을 계량서지학(bibliometrics)으로 개관한 후, 정책적 유용성에 대해 노정한다. 본 논문의 주된 내용은 스마트 전문화의 장점과 단점을 이론적으로 논의하는 것인데, 이를 스마트 전문화에 대한 비판적 검토라고 할 수 있다.

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An Analysis of Specialization Factors for Greenhouse-Grown Spinach and Lettuce (시설 시금치와 상추의 특화 요인 분석)

  • Lee, Sang-Ho
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.1
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    • pp.382-387
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    • 2017
  • This paper analyzes the specialization factors for greenhouse-grown horticultural crops and location quotient. We derived the location quotient of two crops from the Agricultural Census in 2000, 2005, and 2010. The location quotient shows that specialization factors for spinach and lettuce became more concentrated. This means that cultivation of vegetables lean too much towards specialized regions. Implementation policies based on the level of specialization is expected to more efficiently improve the competitiveness of regional agriculture. The logit analysis showed that GRDP, age, education, average employee, and ratio of computer use had a significant impact on specialization of spinach. GRDP, age, and education negatively affected the specialization coefficient of spinach. However, average employee, and ratio of computer use positively affected the specialization coefficient of spinach. Based on these results, we set up the policy tools specializing the regional location quotient.