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산업 유형별 저출산 대응 정책 조합(combination)에 관한 연구
이태천 ( Taecheon Lee ),임소현 ( So Hyun Lim ),장우윤 ( Woo Yoon Jang ) 한국정책학회 2023 韓國政策學會報 Vol.32 No.3
The study was conducted to find optimal policy combinations that can effectively increase fertility rates, while considering the industry structures of different regions. The study used a Fuzzy Set Qualitative Comparative Analysis (Fs/QCA) method, which allowed for the identification of various policy combinations that were found to effectively promote fertility rates in specific industries. The results showed that there were differences in the policy combinations that were effective for increasing fertility, depending on the industry types. The study emphasizes the importance of tailoring low fertility countermeasures to the specific regional characteristics, rather than adopting a one-size-fits-all policy approach. The findings suggest that collaboration between central and local governments is necessary to address low fertility rates, and that tailored policy support at micro-levels can help combat such rates.
지방자치단체의 공공요금 결정에 관한 연구 - 정치적 요인을 중심으로 -
이태천 ( Taecheon Lee ),엄태호 ( Taeho Eom ) 한국정책학회 2021 韓國政策學會報 Vol.30 No.2
본 연구에서는 지방자치단체가 공공요금을 결정하는 과정에 영향을 미치는 요인들을 정치적 요인을 중심으로 살펴보았다. 공공요금은 서비스 공급 비용을 요금으로 충당해야 하는 총괄원가주의가 지켜져야 하지만, 지속된 낮은 요금으로 인해 지방공기업의 경제성과 운영에 있어 여러 문제가 발생하고 있다. 따라서 지방상수도 요금을 이용해 지방 공공요금 결정 과정에서 영향을 미치는 요인들을 확인하고자 한다. 이에 본 연구는 전국 151개 지방상수도 사업자를 대상으로 10년간의 패널데이터를 활용해 분석을 하였다. 분석결과, 직접적인 영향을 미치는 원가적 요인뿐만 아니라 정치적 요인과 사회경제적 요인과 같은 간접적인 요인들 또한 지방상수도 요금 현실화율에 영향을 미치는 것으로 나타났다. 지방선거의 주기에 따라 요금 현실화율이 다르게 나타났으며, 주요 요금 결정 권자인 지방자치단체장의 선수 또한 영향을 미치고 있었다. 정치적 요인 외에도 지방자치 단체의 고령인구 비율과 인구밀도와 같은 사회경제적 요인과 지방상수도 규모 및 재정적 요인들의 영향을 받는 것으로 나타났다. 합리적인 공공요금 결정과 연구가 이루어질 수 있도록 정치적 요인을 비롯한 간접적 요인들의 영향에 대한 고려가 요구된다. This study analysed the influential factors in the process of determining public utility rates in local governments, focusing on political factors. Regarding public utility rates, the "full-cost principal" should be requested, but the low rates are causing problems in the management of economic and operation results. Therefore, we would like to identify the factors that affect the local utility rates decision process by using local water supply rates. This study conducted an analysis using panel-data for local water supply operators nationwide. According to the analysis, not only cost factors that directly affect but also indirect factors such as political and socioeconomic factors affect the rates of recovering costs of local water supply rates. Among the political factors, the rates of recovering costs were the highest at a time when it was away from the local elections, and the tenure of the chief of local government, who are the major decision makers, was also influencing. In addition to political factors, socioeconomic factors of local governments and financial factors related to local water supply were affected. Discussions will be needed on the impact of indirect factors, including political factors, so that reasonable utility rates decisions can be made.
설계 문제의 해결 과정에서 나타나는 공과대학생의 문제해결 특성 분석
노태천(Taecheon Rho),김영종(Youngjong Kim),김태훈(Taehoon Kim) 한국공학교육학회 2006 공학교육연구 Vol.9 No.4
이 연구의 목적은 공과대학생의 설계 문제에 대한 문제해결 특성을 확인하는 것이다 . 연구 목적을 달성하기 위하여 공과대학생을 대상으로 설계 문제 해결 과정을 심층적으로 분석하고 문제해결 결과에 따라 구분된 효율적인 문제해결자와 비효율적인 문제해결자 간의 문제해결 과정을 비교 분석하였다 . 이 연구를 통하여 도출된 결론은 다음과 같다 . 첫째 , 설계 문제의 해결 과정은 비선형적 형태로 수행되며 개인에 따라 다양한 형태를 보인다 . 둘째 , 각 단계별 소비 시간의 차이보다 각 단계 수행의 질적 수준에 따라 문제해결 결과에 차이가 발생한다 . 셋째 , 설계 문제의 해결 과정에서 설계 개요 확인하기 활동과 요구사항 확인하기 활동 , 해결 방안 모색하기 활동과 아이디어 모델링하기 활동이 주된 활동이다 . 넷째 , 설계 문제의 전체 해결 과정에서 만들기 활동이 가장 빈번히 발생하며 가장 많은 시간을 소비하며 , 해결 방안 모색하기 활동은 문제해결 결과와 관련성이 있다 The purpose of this study is to identify characteristics which are related with design problem solving . For this , an effective problem solver and an ineffective problem solver have been compared and analyzed in terms of the process of design problem solving with a population of students who are enrolled in College of Engineering . This study can be concluded as follows . First , the process of design problem solving was performed in non - linear form and it was varied depending on individuals . Second , the results of problem solving could be varied according to the qualitative level of performance in each stage rather than according to the differences of consumption time by each stage . Third , the main activities in process of design problem solving were identifying a design brief , identifying requirements , exploring a problem solution , and idea modeling . Fourth , the making activities took place most frequently and the longest time in the entire process , meanwhile exploring a problem solution was related to the results of design problem solving .
In, Koo,Yoonbok, Lee,Kiyeon, Yoo,Taecheon, Kang,Soonsung, Lim,Sangmoo, Kin,Heonsoo, Sohn,Woojung, Kim,Hyun, Kyung,Moo, Ho Science Press 2006 Acta pharmacologica Sinica. Vol.27 No.1
Aim: To investigate the long-term effect of soybean isoflavones on changes in parvalbumin (PV) immunoreactivity in the hippocampus in normal female, ovariectomized (OVX) female and normal male rats. Methods: Ten-month-old rats were assigned to one of 9 groups (n=7 in each group) based on body weight using a randomized complete-block design. The groups were: control diet-treated females, OVX females, and males; 0.3 g/kg isoflavone-treated females, OVX females, and males; and 1.2 g/kg isoflavone-treated females, OVX females, and males. The PV immunostaining was conducted by using the standard avidin-biotin complex method. Results: PV immunoreactivity and the number of PV-immunoreactive neurons in all the groups after isoflavone treatment were significantly changed in the hippocampal CA 1 region and in the dentate gyms, but not in the hippocampal CA2/3 region. PV immunoreactivity and the number of PV-immunoreactive neurons in the control diet OVX females were similar to those in the control diet, and were greater than those in the control diet normal females. PV immunoreactivity and the number of PV-immunoreactive neurons in all the isoflavone-treated groups decreased dose-dependently after isoflavone treatment. Conclusion: Long-term administration of isoflavones may induce a reduction of PV in interneurons in the hippocampal CA1 region and in the dentate gyrus. The reduction of PV in these regions suggests that the long-term administration of isoflavones may cause a change in calcium homeostasis in the hippocampal CA 1 region and in the dentate gyrus.
Kim, Hongki,Lee, Yoon Ho,Lyu, Taecheon,Yoo, Jong Heun,Park, Taiho,Oh, Joon Hak The Royal Society of Chemistry 2018 Journal of materials chemistry. A, Materials for e Vol.6 No.37
<P>The poor oxidative stability of tin-based perovskites has been an obstacle to their widespread implementation in high-performance solar cells. Herein, quasi-two-dimensional (quasi-2D) tin-based perovskite solar cells are fabricated with significantly improved performance and stability, by introducing an additional formamidinium thiocyanate (FASCN) additive into quasi-2D tin-based perovskites. The incorporation of the FASCN additive greatly prevents quasi-2D tin-based perovskites from oxidation during film formation, through strong chemical interactions with the tin component (Sn<SUP>2+</SUP>). Moreover, it results in a coarser perovskite grain and a higher degree of crystallinity in the out-of-plane direction, leading to enhanced optoelectronic performance of quasi-2D tin-based perovskites. The best-performing tin-based perovskite solar cell shows an efficiency of 8.17% under reverse scan with a steady-state efficiency of 7.84% at a maximum power point (MPP), while retaining over 90% of its initial efficiency after 1000 hours in a glovebox filled with nitrogen. These results demonstrate a versatile, yet simple methodology that can be applied to other lead-free perovskites suffering from poor oxidative stability.</P>