A trend analysis of research articles in a field of knowledge is significant because it can help in finding out the structural characteristics of the field and the future direction of research through observing change in a time series. We identified the structural characteristics and trends in text data (keywords) gathered from research articles which in itself is an important task in various research areas. The titles and keywords were crawled from research articles published from 2016 to 2018 in the Research Journal of the Costume Culture (RJCC), one of the representative Korean journal in the field of clothing and textile. After we extracted data comprising English titles and keywords from 195 published articles, we transformed it into a 1-mode matrix. We used measures from network analysis (i.e., link, strength, and degree centrality) for evaluating meaningful patterns and trends in the research on clothing and textile. NodeXL was used for visualizing the semantic network. This study observed change in the clothing and textile research trend. In addition to covering the core areas of the field, the subjects of research have been diversifying with every passing year and have evolved onto a developmental direction. The most studied area in articles published by the RJCC was fashion retailing/consumer psychology while aesthetic/historic and fashion industry/policy studies were covered to a more limited extent. We observed that most of the studies reflecting the identity of RJCC share subject keywords to a significant extent.

본 연구의 목적은 농가의 사회·경제적 특성을 조사하여 대상 지역 쌀 생산의 기술적 효율성 수준을 분석하는 것이다. 또한 이 연구에서는 캄보디아의 쌀 생산성 수준에 영향을 미치는 요인들을 확인하고자 하였다. 이 연구에 사용된 정보는 2016년에 캄보디아 남부에 위치 하는 다케오주의 트람꺽군과 키리웡군에서 무작위로 선택된 80개의 농가를 면접 조사한 자료이다. 농가의 사회·경제적 특성을 조사하기 위하여 기술 관련 통계 자료가 활용되었다. 또한 inputorientation data envelopment analysis는 기술적 효율성 점수를 추정하는데 사용되었다. 더불어 Tobit regression은 쌀 생산의 효율성 수준에 영향을 미치는 요인을 확인하는데 사용되었다. 연구 결과에 따르면 연구 결과에 따르면 연구 분야 농가의 평균 기술 효율은 0.67인 반면, 쌀 생산업자들은 같은 생산 수준을 유지하면서도 투입 비용을 33% 절감할 수 있는 것으로 나타났다. 다케오주의 뜨람꺽군 및 키리웡군의 쌀 생산의 효율성 수준에 영향을 미치는 네 가지 요인이 발견되었다. 토빗 회귀분석 결과, 가장의 성별, 가장의 주요 직업, 쌀의 재배 횟수를 포함한 요인들이 기술적 효율성에 긍정적인 영향을 미치는 반면 심어진 종자와 품종은 기술적 효율성에 부정적인 영향을 미치는 것으로 추정되었다. 쌀 생산 규모의 효율성은 0.80로 분석되었으며, 이는 농민들이 적정 규모에 가깝게 운영 하고 있음을 나타낸다. 이는 생산관련 비효율의 원인이 투입 자원의 잘못된 배분이나 부적절한 사용으로 인한 것임을 의미 한다.

Although somatic cell nuclear transfer (SCNT)-derived embryonic stem cells (ESCs) in pigs have great potential, their use is limited because the establishment efficiency of ESCs is extremely low. Accordingly, we tried to develop in-vitro culture system stimulating production of SCNT blastocysts with high performance in the colony formation and formation of colonies derived from SCNT blastocysts for enhancing production efficiency of porcine ESCs. For these, SCNT blastocysts produced in various types of embryo culture medium were cultured in different ESC culture medium and optimal culture medium was determined by comparing colony formation efficiency. As the results, ICM of porcine SCNT blastocysts produced through sequential culture of porcine SCNT embryos in the modified porcine zygote medium (PZM)-5 and the PZM-5F showed the best formation efficiency of colonies in α-MEM-based medium. In conclusion, appropriate combination of the embryo culture medium and ESC culture medium will greatly contribute to successful establishment of ESCs derived from SCNT embryos.

The present study investigated fashion Instagram marketing, applying the concept of gamification. It set out to examine the following specific issues: 1) perceptions of flow, pleasures, dimensions of game dynamics (challenge, competition, achievement, reward, relationships among participants, and relationships between brands and consumers), and consumer responses based on frequency and involvement in exercise; 2) the effects of game dynamics dimensions on flow and pleasure; and 3) the effects of flow and pleasure on consumer responses. An online survey was used to gather data and the study analyzed a total of 200 responses. The results of the study were as follows. Perception differences were found only in relation to exercise involvement. Competition, relationships among participants, and relationships between brands and customers positively predicted flow. Among the dimensions of game dynamics, challenge, competition, reward, relationships among participants, and relationships between brands and consumers positively influenced pleasure. In addition, the study also found that pleasure and flow had positive effects on intention to participate and brand loyalty. Meanwhile, only pleasure predicted word-of-mouth. These findings suggest that fashion brands implementing Instagram as a marketing channel should seek to stimulate pleasure and fun to provoke positive consumer responses. Furthermore, the findings of the study provide practical and useful insights for fashion brands implementing Instagram marketing.

This study was conducted to investigate the effects of a powder of steamed and freeze-dried mature silkworms (SMSP), Bombyx mori, on hair growth/loss in vivo in C3H mice. Topically applied SMSP for at least 10 days or longer showed potent hair growth promoting activity. SMSP-treated mice showed increase in hair weight significantly compared with control mice which were not treated with SMSP. Orally administered SMSP also showed hair growth promoting activity, which was lower than that when applied topically. In conclusion, SMSP was identified as a potential candidate for a novel hair-loss preventing and/or hair-growth promoting agent, which shortened the telogen phase to advance the following anagen phase in C3H mice in vivo when SMSP was applied topically for at least 10 days or longer.

Temperatures experienced during larval development can exert profound effects on life-history traits expressed later during the adult stage in insects. In this study, we explored how larval rearing temperature (18, 23, and 28℃) would affect adult lifespan and reproductive performance in Drosophila melanogaster Meigen (Diptera: Drosophilidae). Larval developmental period was shortened with increasing rearing temperature. Larvae reared at colder temperatures reached the adult stage at a larger size than those reared at higher temperatures, thus conforming to the temperature-size rule. More importantly, we found strong evidence for significant effects of larval rearing temperature on both adult lifespan and early-life egg production rate. Lifespan increased progressively as the larval rearing temperature decreased from 28 to 18℃. In contrast, egg production rate was lower for flies raised at 18℃ compared to those at 23 and 28℃. These results highlight the importance of thermal environments experienced during the development in shaping life-history plasticity in insects.