• 제목/요약/키워드: research activities

검색결과 16,907건 처리시간 0.039초

Effects of Raw Materials and Various Molds on the Production of Koji

  • Yi, Sang-Duk;Yang, Jae-Seung;Lee, Gyu-Hee;Park, Seong-Hyun;Oh, Man-Jin
    • Preventive Nutrition and Food Science
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    • 제6권2호
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    • pp.101-106
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    • 2001
  • Alpha-amylase and glucoamylase activities were higher in koji with 40% water than that with 30 and 50% water, and A. oryzae exhibited very high alpha-amylase and glucoamylase activities compared to A. sojae and A. niger. Acidic, neutral and alkaline protease activities also showed higher activities in koji prepared with flour, Korean wheat powder and soybean powder with 40% water based on the weight of the sample. Alpha-amylase, acidic, neutral and alkaline protease activities of all the koji samples according to incubation periods increased until 3~4 days of incubation and maintained nearly the same level or slightly decreased after 5 days of incubation. The protease activities of A. oryzae and A. sojae showed nearly the same trend regardless of differences in substrate conditions and koji materials, but those of A. niger showed a lower activity than those of A. oryzae and A. sojae. These results suggest that the preparation of koji is possible with Korean wheat powder and soybean powder and A. sojae can be utilized as a new strain for fermented foods using soybean as the main materials to increase functional properties and produce products having a new taste and flavor.

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수학 영재교육 자료의 개발과 적용 사례 연구 (Development and application of mathematical activities for gifted students)

  • 이경화
    • 대한수학교육학회지:수학교육학연구
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    • 제13권3호
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    • pp.365-382
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    • 2003
  • 본 연구는 수학적으로 재능이 있는 학생에게 수학적 사고 경험을 제공하고 수학적 능력을 보다 발전시킬 수 있는 교육 자료를 개발하고 적용관찰하는 것을 목표로 한다. 먼저 크루테츠키의 연구에서 제시하는 수학 영재아의 특성을 확인하고 그것이 지도 상황과 어떻게 관련을 맺도록 해야 하는가를 강완(1994)의 연구를 토대로 알아 본다. 두 번째로 수학적 사고력의 함양을 강조한 폴리아의 이론을 토대로 교육 자료가 갖추어야 할 조건을 살펴본다. 크루테츠키의 연구는 수학적으로 재능이 있는 학생의 특징을 이해할 수 있게 하며, 폴리아의 이론은 영재교육 자료가 어떤 구조로, 어떤 특성에 따라 개발되어야 하는가에 대한 시사점을 제공한다. 이러한 이론적 검토에 기초하여 동일 주제를 4차에 걸쳐서 구체화한 교육 자료를 소개하고 실제로 적용한 결과도 제시 한다.

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지방 중소병원 간호사의 환자안전문화 인식이 안전간호활동에 미치는 영향 (Effects of Perceived Patient Safety Culture on Safety Care Activities among Nurses in General Hospitals)

  • 김혜영;이은숙
    • 동서간호학연구지
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    • 제19권1호
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    • pp.46-54
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    • 2013
  • Purpose: An objective of this study was to investigate nurses' perceptions toward patient safety culture and to examine the factors affecting safety care activities. Methods: The participants were 429 nurses, at 6 hospitals located in regions, which have 150 to 300 beds, and HSOPSC (AHRQ, 2009) and questionnaire on safety care activities were used as measurement tools. Descriptive statistics, independent t-test, one way ANOVA, and stepwise multiple regression with SPSS/WIN version12.0 were used to analyze the data. Results: Supervisor manager expectations and actions promoting patients safety and frequency of events reported were the highest as positive responses, whereas staffing and nonpunitive response to errors showed the lowest scores as positive responses. Scores of medication surveillance is the highest while firefighting surveillance is the lowest in terms of safety care activities. Significant predictors influencing safety care activities were frequency of events report, handoffs and transitions, work unit a patient safety grade, organizational learning-continuous improvement, and teamwork across units. These predictors account for 23% of the variance. Conclusion: These results suggest that hospital policies and systems should be built to settle patient safety culture effectively. Development of standard manuals for safety care activities is another critical element for promoting patient safety.

정보기술 활동의 집중화와 조직 전략간의 적합도가 정보시스템 성과에 미치는 영향에 관한 연구 (The Effects of Fitness Between Centralization of IT Activities and Organizational Strategy on Information System Performance.)

  • 한경일
    • 정보학연구
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    • 제2권1호
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    • pp.131-147
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    • 1999
  • 전략유형과 정보기술 활동 집중화의 관계에 대한 기존 연구를 정리하면 다음과 같다. 원가 우위 경쟁 전략에는 정보기술 활동을 중앙에 집중시키는 것이 더 적합하고 차별화 전략의 경우에는 정보기술 활동을 분산시키는 것이 더 적합하다는 것이다. 그러나 이런 연구 결과가 아직 실증적으로 검증된 바 없다. 따라서 본 연구는 조직에서 포터의 경쟁 전략유형(원가우위 전략, 차별화 전략)과 정보기술의 집중화가 적합하게 조직될 때 실제로 정보 시스템 성과가 향상되는지 검증하고자 하였다. 현장연구를 통한 연구 결과를 보면, 두 변수의 적합성 여부에 따라 유의적인 성과차이를 보이지 않았다. 그러나, 기술적 통계를 보면 전략과 정보기술 활동의 집중화 정도가 적합하게 조직된 조직이 그렇지 않은 조직보다 대체로 성과가 높았다. 따라서 보다 충분한 시간적 여유를 가지고 조직 구조, 문화 등과 같은 주요 외생 변수를 추가하여 연구를 수행한다면 보다 의미있는 결과를 가져올 수 있을 것이다.

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Ethanol-induced Activiationof Transcription Factor NF-$\kappa$B and AP-1 in C6 Glial Cells

  • Park, Jae -Won;Shim, Young-Sup
    • Preventive Nutrition and Food Science
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    • 제4권3호
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    • pp.209-214
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    • 1999
  • In this study, the effectof ethanol and acetaldehyde on DNA binding activities of NF-$textsc{k}$B and AP-1 were evaluated in C6 rat glial cells. Both NF-$textsc{k}$B and AP-1 are important transcription factors for the expression of various cytokines in glial cells. Our data showed that neither ethanol nor acetaldehyde induced conspicuous cell death of C6 cells at clinically realistic concentrations. When the DNA binding activities of nuclear NF-$textsc{k}$B and AP-1 were estimated using electrophoretic mobility shift assay (EMSA), ethanol(0.3%) or acetaldehyde(1mM) induced transient activation of these transcription factors, which attained peak levels at 4~8 hours and declined to basal levels at 12 hours after treatement . The supershift analysis showed that the increased activities of NF-$textsc{k}$B in ethanol/acetaldehyde-treated C6 cells were due to the preferential induction of p65/p50 heterodimer complex. The DNA binding activities of these transcriptional factors decreased below basal levels when cells were cultured with either ethanol or acetaldehyde for 24 hours, and showed the inhibitory effect of chronic ehtanol /acetaldehyde treatment on the activities of these transsriptional factors. Our data indicate that either ethanol or acetaldehyde can induce functional changes of glial cells throught bi-directional modulation of NF-$textsc{k}$B and AP-1 DNA binding activities.

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The Effects of Socially Responsible Activities on the Management Performance of Internationally Diversified Firms: Evidence from Korean Small- and Medium-Sized Firms

  • An, Sang-Bong;Kang, Tae-Won
    • Journal of Korea Trade
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    • 제24권5호
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    • pp.35-54
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    • 2020
  • Purpose - It seems common sense that corporate social responsibility (CSR) is a key driver of business sustainability. Nevertheless, there has been little research on the performance of socially responsible activities, including economic and environmentally responsibility activities, in internationally diversified firms. Design/methodology - The purpose of this study was to evaluate the effects of CSR activities on management performance. For this evaluation, an empirical analysis was conducted with total of 2,520 cases, selected from companies listed on the Korea Composite Stock Price Index market for six years from 2013 to 2018. As proxies for management performance, financial data such as a total asset net profit ratio and a total asset operating ratio were used. A multivariate regression analysis was conducted to test hypotheses. Findings - The results of this analysis indicated that firms in the CSR outstanding group were ranked significantly higher than other groups in management performance. In addition, CSR activities of internationally diversified firms positively influenced the total asset net profit ratio and total asset operating ratio. Originality/value - The results suggest that the CSR activities of these firms can play a significant role in enhancing management performance in the economic status of Korea, where the degree of export dependency is high.

Effects of Smart Factory Quality Characteristics & Innovative Activities on Business Performance : Mediating Effect of Using Smart Factory

  • CHO, Ik-Jun;KIM, Jin-Kwon;AHN, Tony-DongHui;YANG, Hoe-Chang
    • 융합경영연구
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    • 제8권3호
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    • pp.23-36
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    • 2020
  • Purpose: The purpose of this study is to identify the strategic direction of organizations and their employees to efficiently utilize smart factories and enhance business performance among Korean manufacturing companies. Research design, data, and methodology: We derived a structured research model to check the mediated effect of utilization of smart factory between the characteristics of smart factory and the innovation activities. Results: Quality characteristics of smart factory and Innovation activities were all found to have a statistically significant effect on utilization of smart factory, utilization of smart factory was found to have a statistically significant effect on the business performance. And it has been shown that the utilization of smart factory is partially mediated relative to the quality characteristics of smart factory and business performance and relative to innovation activities and business performance. Conclusions: Smart factory builders can reflect the areas that affect utilization of the smart factory in their strategies by considering the quality characteristics of the smart factory and innovation Activities. Therefore, smart factory builders can identify the quality characteristics of smart factory and reflect them in the process and analyze active utilize measures through the innovative activities of the employees of the organization, thereby influencing business performance.

CEO Humble Leadership and Corporate Social Responsibility: The Moderating Effect of Firm Slack

  • HONG, Sung Min
    • 융합경영연구
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    • 제8권2호
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    • pp.27-38
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    • 2020
  • Purpose: Strategic management scholars have investigated the effects of corporate social responsibility (CSR) on firm financial performance, identifying various impacts of CSR activities showing conflicting results. Meanwhile, relatively less attention has been paid to the antecedents of CSR activities. According to upper echelons theory, organizational outcomes are predicted by characteristics of CEOs and top management team members. Corporate social responsibility is a type of organizational outcome influenced by such top leader characteristics and choices. Recognizing the importance of exploring new antecedents of CSR activities, I examine whether CEO humility affects CSR outcomes. Research design, data and methodology: The KEJI index was set as a dependent variable to measure CSR activities. Among the 200 sample companies registered in the KEJI database in 2014, 85 companies were finally selected and analyzed to measure CEO humility, as independent variable. I also examine the moderating effects of firm slack on the relationship between CEO humility and CSR activities. Results: There is a positive relationship between CEO humility and corporate social responsibility activities and this relationship is negatively moderated by firm slack. Conclusions: This paper contributes to understanding positive impacts of having humble CEOs on corporate social responsibility outcomes and recognizes the role of firm slack.

The Effect of Motivation to Participate in Yacht Activities on Satisfaction and Continuance Intention

  • Ahn, Gwang Jun;Shin, Geon Cheol
    • Asia Pacific Journal of Business Review
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    • 제6권1호
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    • pp.61-73
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    • 2021
  • This study attempted to examine the structural relationship between the main factors that determine the intention to continue participation in yacht activities. Specifically, motivation for yacht activities was divided into achievement motivation, social motivation, escapist motivation, conspicuous motivation, and hedonic motivation, and the effect of each motivation on the satisfaction and continuous intention of yacht activities was examined. This study surveyed 338 ordinary people who were interested in yacht activities or had experience in yacht activities, and verified the main hypothesis through regression analysis. The main analysis results of this study are as follows. First, it was found that achievement motivation did not affect satisfaction. Second, it was found that social motivation had a positive (+) effect on satisfaction. Third, it was found that escapist motivation had a positive (+) effect on satisfaction. Fourth, it was found that the conspicuous motivation had a positive (+) effect on satisfaction. Fifth, it was found that hedonic motivation had a positive (+) effect on satisfaction. Sixth, it was found that the achievement motivation had a positive (+) effect on continuous intention. Seventh, it was found that social motivation did not affect continuous intention. Eighth, it was found that escapist motivation had a positive (+) effect on continuous intention. Ninth, it was found that the conspicuous motivation did not affect continuous intention. Tenth, it was found that the hedonic motivation had a positive (+) effect on continuous intention. Eleven, satisfaction was found to have a positive (+) effect on continuous intention. This study derived academic and practical implications based on the analysis results and proposed future research directions.

제3세계 음식전문점의 문화마케팅 활동이 방문동기와 재방문의도에 미치는 영향 - 베나레스를 중심으로 - (Culture Marketing Activities of the Third World Food Restaurant on Visit Motivation and Revisit Intention : The Case of "Benares")

  • 이성희;이한명;이성훈
    • 한국프랜차이즈경영연구
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    • 제6권1호
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    • pp.91-111
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    • 2015
  • This paper aims to examine the effect that cultural marketing influences on visit motivation and customer responses. We found that cultural marketing promotion activities by Benares, Indian restaurant had a positive effect on motivation to visit the store. Also research showed that the cultural direction and positioning marketing activities of Benares' cultural marketing had a statistically significant positive effect on all items of customer responses, that is service, atmosphere, brand but cultural promotion and cultural support marketing activities had a positive effect only on brand, except service, atmosphere. In addition, research showed that while all items of customer responses had a positive effect on revisit intention. In other words, it was proven that cultural marketing promotion activities by the Third World restaurant influence on visit motivation and customer responses and it provides practical implications to business marketers that foodservice companies' marketing associated with cultural marketing activities can be efficient marketing strategies that influence on revisit intention.