• Educational Technology International
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• 제20권2호
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• pp.223-255
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• 2019

The purpose of this study is to draw implications for designing online tools to support monitoring in collaborative learning. For this purpose, eighteen research papers that explored learner dashboards and group awareness tools were analyzed. The driving questions for this analysis related to the information and outcomes that must be monitored, whose performance they represent, and who monitors the extent of learning. The analytical frameworks used for this study included the following: three modes of co-regulation in terms of who regulates whose learning (self-regulation in collaborative learning, other regulation, and socially shared regulation) and four categories of dashboard information to determine which information is monitored (information about preparation, participation, interaction, and achievements). As a result, five design implications for learner dashboards that support monitoring were posited: a) Monitoring tools for collaborative learning should support multiple targets: the individual learner, peers, and the entire group; b) When supporting personal monitoring, information about the individual and peers should be displayed simultaneously to allow direct comparison; c) Information on collaborative learning achievements should be provided in terms of the content of knowledge acquired rather than test scores; d) In addition to information related to interaction between learners, the interaction between learners and learning materials can also be provided; and e) Presentation of the same information to individuals or groups should be variable.

• 무역상무연구
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• 제14권
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• pp.349-370
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• 2000

The environmental problems such as global climate change, global waming, ozone depletion, environmental pollution have been caused by the rapid economic growth, increasing in use of fossil fuels for industrialization and scientific technology development. Especially human activities are significantly altering the atomosphere's composition and its radiative properties. To Stabilize greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system, the international community adopted the UN Framework Convention on Climate Change in 1992 and Kyoto protocol in 1997. Also to protect ozone layer the international community adopted the Vienna Convention for the Protection of the Ozone Layer in 1985, and the Montreal Protocol on Substances that Deplete the Ozone Layer in 1987. To achieve global environmental objectives, some multilateral environmental agreements includes trade regulation. For example, Montreal Protocol includes the provisions to regulate the world trade of the sudstances which might destroy ozone layer. However Kyoto Protocol has no provisions to regulate trade and is not in force yet. Although there is no trade regulation article in Kyoto Protocol, the international world trade will be influenced by limitation and reduction of CO2 and strengthening the CO2 emission standard for import good. For example Korean car industy agreed with EU to reduce CO2 emission from new passenger car and Korean Semiconductor industry agreed with WSC(World Semiconductor Council) to reduce PFCs in 1999.

• 한국식품영양과학회지
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• 제28권4호
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• pp.958-962
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• 1999

Hydroxy methylglutaryl CoA(HMG CoA) reductase and acyl CoA:cholesterol acyltransferase(ACAT) are two important enzymes that are associated with regulation of cholesterol metabolism. The inhibitors of HMG CoA reductase and ACAT are very effective in lowering serum cholesterol in most animal species. In present study, various plant extracts with hot water were used to examine the inhibitory activities against HMG CoA reductase and ACAT that are involved in cholesterol biosynthesis and cholesterol esterification in tissues, respectively. The extracts of Fagophyrum rotundatum, Rosa multiflora, Rosa rugosa and Alisma orientalis exhibited significant inhibitory activities against the ACAT, 29%, 24%, 19%, and 18%, respectively. However the extracts of Typha augustifolia, Polygonum cuspidatum, Crataegus pinnatifida, Polygonum multiflorum inhibited the HMG CoA reductase activity by 53%, 42%, 37%, and 33% respectively. Results suggest that these plant extracts might play important roles in the regulation of the cholesterol metabolism in vivo.

• The Korean Journal of Physiology and Pharmacology
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• 제21권1호
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• pp.1-9
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• 2017

Intestinal disorders often co-occur with inflammation and dysmotility. However, drugs which simultaneously improve intestinal inflammation and co-occurring dysmotility are rarely reported. Atractylodin, a widely used herbal medicine, is used to treat digestive disorders. The present study was designed to characterize the effects of atractylodin on amelioration of both jejunal inflammation and the co-occurring dysmotility in both constipation-prominent (CP) and diarrhea-prominent (DP) rats. The results indicated that atractylodin reduced proinflammatory cytokines TNF-${\alpha}$, IL-$1{\beta}$, and IL-6 in the plasma and inhibited the expression of inflammatory mediators iNOS and NF-kappa B in jejunal segments in both CP and DP rats. The results indicated that atractylodin exerted stimulatory effects and inhibitory effects on the contractility of jejunal segments isolated from CP and DP rats respectively, showing a contractile-state-dependent regulation. Atractylodin-induced contractile-state-dependent regulation was also observed by using rat jejunal segments in low and high contractile states respectively (5 pairs of low/high contractile states). Atractylodin up-regulated the decreased phosphorylation of 20 kDa myosin light chain, protein contents of myosin light chain kinase (MLCK), and MLCK mRNA expression in jejunal segments of CP rats and down-regulated those increased parameters in DP rats. Taken together, atractylodin alleviated rat jejunal inflammation and exerted contractile-state-dependent regulation on the contractility of jejunal segments isolated from CP and DP rats respectively, suggesting the potential clinical implication for ameliorating intestinal inflammation and co-occurring dysmotility.

• 한국자동차공학회논문집
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• 제23권2호
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• pp.230-238
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• 2015

The main purpose of this paper is to suggest opportunities for reducing $CO_2$ emission in energy conversion of a vehicle, focused on auxiliary energy improvement in the automotive field. As part of worldwide efforts to curb global warming and to protect the domestic industry as trade barriers, many countries have set goals to regulate greenhouse gas emissions. As an example, new $CO_2$ emission regulation in EU was expected to go into effect strictly in 2020. Therefore, global car-makers need to establish strategic responsiveness of the regulations. This paper shows $CO_2$ economic value by using the correct interpretation of the relevant laws and regulations. The $CO_2$ value analyzed using quantitative figures leads to the possibility of auxiliary(accessories, HVAC, electric apparatus etc.) technology for improving fuel economy. As a result, this study generalizes the meaning of electric power saving for each driving mode by auxiliary energy improvement.

• 공학교육연구
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• 제26권3호
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• pp.49-59
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• 2023

On July 6, 2021, the Ministry of Education revised and announced the operating regulations of the undergraduate co-op with the aim of protecting students rights and student-centered operation based on mutual benefits for students and institutions. Therefore, the purpose of this study is to analyze universities' perceptions against the amendment of regulation of the Ministry of Education's into universities/college, regions. According to a survey of 75 KACE, we found that colleges are more difficult than universities in terms of administrative work, company participation, reduced opportunities for co-op, and managing participating companies. Next, most of the regional differences in difficulties were not significant, and only the decline in company participation rate was more difficult in Daegyoung/Gangwon/Chungcheong/Jeju than in the metropolitan area. Finally, policy directions such as the differential application of practical support expenses according to the size of the company, tax benefits for institutions, and clarification of the concept of job training were presented.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2008년도 동계학술발표대회 논문집
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• pp.429-433
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• 2008

Due to the construction technique (or the construction culture) growth in and out of Korea, newly-developed products have been continuously released. Furthermore, all legislation and regulation that the World follows are gradually becoming unified. (e.g. FTA(Free Trade Agreement) with the United States was contracted, and inevitable FTA contraction with EU and China), For this reason, it is considered that Korean fire regulation on building interior materials needs to be reviewed and compared with that of international standard so that it becomes legitimate and reasonable one.

• 전기학회논문지
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• 제66권8호
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• pp.1303-1308
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• 2017

The underground electricity distributions are significantly increased because of the urbanization accompanied by rural area developments. However, it has also been increased the safety accidents such as an electric shock around the handhole where the underground cables are connected to each other. This paper provides the base materials on the necessity to amend the installation regulation for securing the insulation and structure strength of handholds using the cast iron or fiberglass reinforced plastic. Article 137 in the judgement regulation for the Korea electro-technical regulation which is one of the installation regulations for handhole is amended and announced in 2017 by being based on the materials in this paper. It is expected to continually reduce the electric shock occurrence around handhole by considering the amended installation regulation.

• 인터넷정보학회논문지
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• 제17권4호
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• pp.145-159
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• 2016

본 연구는 최근 시장규모가 급격히 커지고 있는 주문형서비스(Video on Demand) 광고의 심의 규제를 위한 입법 공백의 문제점을 지적하고, 이를 위한 해결방안으로 통합방송법(안) 내 유사방송서비스 정의 및 규제를 위한 법적 근거를 마련하되 공동규제(Co-Regulation) 방식 채택을 제언하고 있다. 유료방송플랫폼 사업자들은 VoD 시청 규모 증가를 발판으로 VoD 광고를 수익모델로 삼아 제공 중에 있는데 실시간방송광고가 엄격한 심의 규제를 받는 반면, VoD 광고는 그렇지 못하다. 그 이유는 방송법을 비롯한 국내 법령에서는 VoD 및 VoD 광고 심의 규제를 위한 법적 근거가 부재하고, 광고 내용에 대한 규제는 사업자간 자율규제체계에 의존하고 있기 때문이다. 사업자 중심의 자율규제체계 하에서는 이용자(특히 어린이, 청소년과 같은 소수계층) 보호에 한계가 있고, 사업자가 광고주 영향력에 취약하며, 규제 실효성을 담보할 수 없다는 한계점을 가지고 있다. 이에 본 연구는 VoD 광고의 내용 규제 방향을 세 가지 측면에서 분석하였다. 첫째, 영국, 캐나다, 유럽연합(EU), 아일랜드와 같은 해외 주요국의 VoD 광고 규제 사례조사를 수행하였다. 각 국은 VoD 및 VoD 광고에 대한 법적 근거를 방송법 내지 그에 파생된 법령을 통해 확보하고 있었으며, 방송통신규제 기관 중심으로 심의규제를 하되 공동규제 방식을 채택하고 있었다. 둘째, VoD 광고 규제의 목적과 영역 측면에서 검토하였다. 본 연구가 제안하는 VoD 광고 규제의 목적은 이용자 보호이어야 하며, 그 영역은 내용심의로 제언하고 있다. 셋째, VoD 광고규제를 입법론 차원에서 검토하였다. 법적 근거는 일반법인 통합방송법(안)에 마련하되, 공동규제 방식 채택을 권고하였다. 개별법보다는 일반법을 권고한 이유는 VoD 서비스는 유사방송의 특성을 가지며 VoD를 제공하는 사업자가 유료방송사업자라는 지위 측면에서 통합방송법(안)에서 수용하는 것이 합리적이라는 점, 규제기관의 전문성 측면에서 실시간 방송광고를 심의하는 기관이 감독기능 및 지침제 개정 승인권을 보유하는 것이 일관성이 있다는 점에 근거한다. 본 연구가 제안한 VoD 광고에 대한 내용 심의 규제가 가능해진다면 광고 심의의 사각지대였던 VoD 광고 심의를 통해 이용자보호에 보다 충실할 수 있을 것이고, 자율규제체계가 가진 지속가능성 측면에서의 취약성을 어느 정도 극복할 수 있을 것으로 기대할 수 있다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1996년도 하계학술대회 논문집 A
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• pp.609-612
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• 1996

This paper describes a design and implementation of the practical SMPS(Switched Mode Power Supply) with multi-output independent regulation scheme. The designed SMPS is applied to the PSU(Power Supply Unit) of high power GTO drivers for a inverter system. In order to accomplish precise voltage regulations for both turn-on and turn-off bias voltages of the GTO driver, the conventional forward type PWM converter scheme is adopted with the Post Regulator using a Saturable Reactor. Analytic design criteria and control schemes are described for practical applications. Finally, the precise regulation of multi-output voltages is proved by experimental results.