• Journal of Korean Neurosurgical Society
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• 제57권3호
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• pp.219-220
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• 2015

Variations in the course and distribution of common palmar digital nerves and arteries are rare. A classic common palmar digital nerves and arteries are defined as concomitant. During routine dissection classes to undergraduate medical students we observed formation of each common palmar digital nerve divided into 2 or 3 branches and formed a ring enclosing the corresponding common palmar digital artery. Knowledge of the anatomical variations of the common palmar digital nerves and arteries is crucial for safe and successful hand surgery.

• 대한기관윤리심의기구협의회지
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• 제2권1호
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• pp.1-5
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• 2020

The U.S. Department of Health and Human Services and fifteen other Federal Departments and Agencies have issued final revisions to the Federal Policy for the Protection of Human Subjects (the Common Rule, 45 CFR 46, Subpart A). The Common Rule was initially promulgated in 1991 and amended in 2005. The Final Rule to update the current regulations was published in the Federal Register on 19 January 2017. The final compliance date of the revised Common Rule including the cooperative research requirement is effective on 20 January 2020 after twice to delay. The revised Common Rule aims to make more effective conduct of minimal risk research reflecting modern research activities and recognize evolving technologies, including mobile technologies, internet, and the growth in computing power. The revisions to the Common Rule were based on a variety of sources of public, stakeholder, and expert comments. The author summarized the key changes and the implications to Korean human research regulations.

• 한국초지조사료학회지
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• 제33권2호
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• pp.117-122
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• 2013

본 시험은 2010년부터 2012년까지 경북 성주에서 2모작 작부체계에 알맞은 다수성이며 조숙성인 콤먼베치의 품종을 선발 할 목적으로 헤어리베치 Cold green, 콤먼베치 Maxivesa, Wild common, Rasina, Morava 및 Blanchefleur의 생육특성, 건물수량 및 사초품질을 평가하였다. 시험설계는 품종을 처리로한 6처리 3반복의 난괴법으로 배치하였다. 파종은 2010년 10월 11일과 2011년 10월 3일에 하였으며 수확은 2011년 5월 4일과 2012년 5월 10일에 실시하였다. 가을의 초형은 Wild common은 부복형이었으며 다른 품종들은 반직립형이었다. 유식물의 활력은 다른 품종들에 비해 Wild common이 다소 낮았다. 내한성은 Cold green과 Wild common이 우수했으나 다른 콤먼베치 품종들은 낮았다. 개화기는 Cold green이 4월 22일로 가장 빨랐으며 Wild common은 4월 26일 Rasina와 Blanchefleur가 4월 28일이었으며 Maxivesa가 5월 17일이었다. 1년차 시험에서 건물수량은 Cold green은 다른 5품종보다 수량이 높았으며 (p<0.05), Wild common은 나머지 4품종보다 많았으며 (p<0.05), Maxivesa와 Blanchefleur는 Rasina와 Morava보다 높았다 (p<0.05). 2년차 시험에서도 건물수량은 Cold green은 다른 5품종 보다 높았으며 (p<0.05), Wild common은 다른 4품종보다 높았다 (p<0.05). 일반적으로 베치의 CP 함량은 높았고 섬유소함량은 낮았다. 가을 파종 콤먼베치의 품종은 개화기가 빠르며 내한성이 강한 Wild common이 좋을 것으로 생각된다.

• 전력전자학회논문지
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• 제6권5호
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• pp.423-431
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• 2001

최근의 유도전동기 구동 시스템은 고속의 ON, OFF동작 특성을 가진 전력 반도체 소자를 가진 인버터와 이를 제어하기 위한 SVPWM(Space Vector PWM)제어이론에 의하여 주로 구성되어 있다. 이러한 PWM 인버터는 정현파 형태의 전압과 전류를 얻기 위해 높은 스위칭 주파수로 동작을 하게 되고, 매 스위칭이 일어나는 순간마다 di/dt 및 dv/dt가 매우 크기 때문에 무시할 수 없는 양의 고주파 누설전류가 고정자 권선과 프레임 사이에 존재하는 기생 커패시터를 통해 접지로 흐르게 된다. 이로 인해 누전보호 계전기의 오동작 및 모터 권선의 절연파괴에 의한 모터의 수명단축 등과 같은 문제점을 야기하게 된다. 본 논문에서는 이러한 문제점을 일으키는 고주파 누설 전류와 커먼 모드 전압을 감쇄하기 위하여 4 레벨 반파 브릿지 인버터에 의해 커먼 모드 전압과 크기가 같고 극성이 반대인 전압을 생성하고, 이 전압을 커먼 모드 트랜스포머에 인가하여 누설 전류의 원인이 되는 커먼 모드 전압을 상쇄시킬 수 있는 새로운 형태의 능동형 커먼 모드 전압 감쇄기를 제안하였다. 제안된 감쇄기의 동작 성능을 P-SPICE를 이용한 시뮬레이션 및 실험을 통하여 검증하였다.

• 한국자원식물학회지
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• 제24권6호
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• pp.666-674
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• 2011

To elucidate genetic diversity of common reed in Korea, we collected a total of 674 common reed plants from 27 regions in South Korea. Hierarchical clustering using 7 morphological traits divided the 27 common reed populations into 7 groups. Random amplified polymorphic DNA (RAPD) results identified three distinct groups of common reed. Common reed accessions in group I mostly inhabit coastal areas. Group II includes reeds mostly collected from inland areas. Group III consists of common reed accessions collected from inland and coastal areas, suggesting that this group might contain hybrids. In summary, we suggest that parapatric speciation might be an important factor in the genetic diversity of common reed and geographical speciation of common reed that might be also affected by environmental gradients.

• 가정과삶의질연구
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• 제22권5호
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• pp.123-132
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• 2004

The purpose of this study was testing the attitude differences on common space management between expecting residents and residents in high rise mixed-use residential buildings(MURB). Research method was social survey with questionnaire from 176 residents and 67 expecting residents by snow balling sampling. Research results were 1)residents want mostly 'convenience', but expecting residents want mostly 'amenity' from MURB environment 2)residents and expecting residents showed statistically significant attitude differences on willingly to pay, amount to pay and paying method about common spaces & facilities. 3)above two groups showed statistically significant difference on opening the common spaces & facilities to the community. 4)residents showed higher than expecting residents on impact degree of common spaces & facilities to neighborhood intimacy. 5)most of residents and expecting residents had an idea of 1-2 hour per week volunteer service at common spaces & facilities. Conclusively, survey on expecting residents's opinion might be needed to enhance the usability of common spaces and facilities in MURB. After the residents moving in, periodical evaluation about usability of each spaces & facilities needed to remodel common spaces.

• 동의생리병리학회지
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• 제19권2호
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• pp.524-529
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• 2005

Socheongryong-tang(SCRT) is widely used to treat the common cold. The purpose of this study was to evaluate the efficacy of SCRT on Punghan type(風寒型) and Pungyeol type(風熱型) common cold. 98 registered students with commom colds of recent onset were randomized to the double blind, placebo-controlled study. SCRT extract in capsule, $5.4g(1.8g{\times}3cap)$, orally dissolved 3 times a day. The severity of illness was assessed by the physician, using a 5-point scale on start and finish. In Pungyeol type common cold, no statistically significant differences were detected between the SCRT and placebo groups for any of the measured outcomes. In Punghan type common cold, SCRT significantly reduced rhinorrhea (p=0.034) and nasal stuffiness (p=0.048) compared with placebo. This study shows that SCRT is effective in treating cold symptoms in Punghan type common cold. If patients with cold are able to be administered SCRT according to common cold type, the benefit would be expected to increase.

• 한국전자파학회논문지
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• 제29권12호
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• pp.963-968
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• 2018

본 논문에서는 수동소자를 이용한 소형 공통 모드 필터를 설계 및 제작하였다. 주어진 주파수 응답을 갖는 공통 모드 필터를 설계하기 위해 차동 모드와 공통 모드에서 등가회로를 분석하였다. 제안된 구조는 기존의 ${\lambda}/4$ 공진기로 구현된 필터에 비해 60 %의 크기가 감소하였다. 또한, 제작된 공통 모드 필터는 ${\mid}S_{dd11}{\mid}$, ${\mid}S_{cc21}{\mid}$, ${\mid}S_{cc11}{\mid}$ < -10 dB를 만족하는 27.5 %의 공통 모드 흡수 대역폭에서 최대 1.2 dB의 차동 모드 삽입손실과 최소 78.2 %의 공통 모드 흡수 효율을 갖는다.

• 마케팅과학연구
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• 제20권1호
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• pp.89-97
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• 2010

本文研究共同特性对于无选择权的影响, 并涉及到了调节焦点理论. 本文主要着眼于这三个因子以及他们之间的关系. 之前的研究已经广泛涉及到这三个方面. 第一, 共同特性影响已经被广为研究. Tversky (1972) 开创了这个理论, EBA 模型: 通过消除方面. 根据这个理论, 消费者在比较的过程中更易于注意特殊的特性, 而忽略共同特性. 最近, 更多的研究开始针对于此模型对于消费者行为的影响. Chernev (1997) 认为增加共同特性可以减少选择距离. 但是, 随后Chernev (2001) 的研究指出共同特性可能是消费者认知上的负担, 所以他们更喜欢启发式的过程而不是系统式的过程. 这些研究提出了一系列问题: 共同特性是否影响顾客选择? 如果是的话, 这些影响是什么样子的? 第二, 一些研究指出没有选择的状况是消费者最好的选择, 他们在犹豫不决时用这种方法回避选择. 其他关于这一理论的研究是时间的压力, 消费者自信, 以及可供选择的数量. 第三, 调节聚焦理论在目前非常流行. 消费者有两个焦点目标: 促进和制止. 促进聚焦主要和希望, 野心, 成功, 获得等有关; 而制止聚焦和责任, 职责, 安全, 规避等有关. 调节聚焦理论预测了顾客的感情, 创造, 态度, 记忆, 表现, 和判断. 而这些都是市场营销研究的领域这些文献为本文的研究提供了一些理论支持. 特别是增加共同特征而不是忽略他们可以增加选择过程中克制消费者的没有选择状况的比重, 其对于促进消费者的作用确实相反的. 本文通过两个试验进行验证. 第一个是2 X 2 组间的设计(共同特性X调节聚焦), 数码相机作为相关的客体. 特别的是, 调节聚焦变量是从11个问题中取得的. 共同特性包括焦距, 重量, 记忆卡, 电池, 而像素和价格作为独特特性. 结果证明了我们的假设, 那就是增加共同特性增加了克制消费者的无选择比重, 而对促进消费者没有作用. 第二个试验被用来复制第一个实验的结果. 这个实验和之前的基本相同, 只有两个方面不同—主要控制和研究客体. 在促进的前提下, 研究对象必须一些词例如: 利润, 野心, 高兴, 成功, 发展等. 在克制的前提下, 他们必学写下坚持, 安全, 保护, 规避, 损失, 责任等词. 实验证明我们假设是成立的. 本研究说明了共同特性对于顾客选择的二重效果. 增加共同特性可以提高或者降低无选择状况. 本文对于理论研究和实践上都有着贡献. 对于市场营销人员来说, 他们可能需要根据顾客的划分来考虑产品的共同特性. 理论上, 研究结果支持共同特性和无选择状况的调节变量. 最后, 本文也有一些不足, 例如过于强调态度的重要性等. 我们希望本文能够为未来的研究做出抛砖引玉的作用.

• 품질경영학회지
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• 제46권2호
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• pp.327-338
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• 2018

Purpose: A risk evaluation procedure is proposed for common failure causes in FMEA(Failure Mode and Effects Analysis). The conventional FMEA does not provide a proper means to compare common failure causes with other failure causes. This research aims to develop a risk evaluation procedure in FMEA where common failure causes and other failure causes exist together. Methods: For each common failure cause, the effect of each combination of its resulting failures is recommended to be reevaluated considering their interactive worsening effect. And the probability that each combination of failures is incurred by the same common cause is also considered. Based on these two factors, the severity of each common cause is determined. Other procedures are similar to the conventional method. Results: The proposed procedure enables to compare and prioritize every failure cause. Thus, the common causes, each of which incurring two or more failures, and other causes, each of which is corresponding to one failure, can be fairly compared. Conclusion: A fair and proper way of comparing the common failure causes and other causes is provided. The procedure is somewhat complicated and requires more works to do. But it is worth to do.