• Journal of Korean Orthopaedic Sports Medicine
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• v.6 no.1
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• pp.5-12
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• 2007

견관절의 다방향 불안정성은 생역학 및 생화학적 이상의 복합적 요인에 의해 발생되는 것으로 알려져 있으나 이에 대한 보다 많은 연구가 이루어져야 될 것으로 생각된다. 최근 다방향 불안정성과 관련된 요소에 따라 분류가 세분화되어 치료가 이루어지고 있다. 따라서 진단시 세심한 병력과 진찰이 매우 중요하며 이에 따라 치료 방침을 결정해야 할 것이다. 많은 환자에서 삼각근, 회전근 개, 견갑 안정화 근육을 강화시킴으로써 증상이 호전되나 비수술적 치료에 호전이 없는 경우는 관절 낭 이동술을 이용하여 비교적 만족스러운 결과를 얻을 수 있다. 일반적으로 개방적 술식이 다방향 불안정성을 위한 수술적 치료의 표준적 술식으로 알려져 있으나. 최근에는 여러 관절경적 술식이 개발되고 있고 이에 따른 중 단기 추시 결과도 비교적 좋은 것으로 보고되고 있다. 그러나 이 술식에 대한 정확한 평가를 위해서는 많은 경험과 장기 추시 결과를 요한다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2002.05a
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• pp.785-791
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• 2002

본 연구에서는 자동차의 안락성에 큰 영향을 미치는 운전자세와 운전에 따른 피로도를 평가하는 방법에 대해 다루고자 한다. 이러한 피로도를 평가하기 위해서 EMG, ECG와 같은 생리신호를 이용한 정량적인 평가방법과 졸림감 주관적 피로도 등과 같은 정성적인 평가방법을 동시에 수행하였다. 본 실험은 실제 차량에서 동일탄 구간을(호남고속도로 대전-정읍)을 왕복 주행하면서 수행되었으며, 실험에 참여한 인원은 콩 6명이었다. 실험 결과 운전시간이 증가함에 따라 근육의 피로가 증가하는 것을 볼 수 있었으며, 동시에 졸림감 또한 증가하였다. 운전 자세에 따른 피로도의 평가 결과 졸림감이 중요한 요인으로 나났는데, 이는 안락한 운전자세 뿐만 아니라 안전한 운전을 위해서도 아주 중요한 요인이라 생각된다. 본 연구는 실제 차량을 통탄 피로도의 편가를 하는데 있어서 피로를 평가하는 방법에 대탄 가이드로써 그 역할이 중분하리라 생각이 되며. 무엇보다도 실제 차량에서 실험한 결과 샘플수가적기 때문에 객관적인 결과라고 말하기엔 어렵겠지만, 운전 자세에 따라서 유의한 자이를 보였다.

• Journal of the Korea Convergence Society
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• v.10 no.11
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• pp.557-564
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• 2019

The purpose of this study was to examine the influencing factors of job engagement among Korean police officers. This was the secondary analysis of data from the 5th Korean Working Conditions Survey (KWCS). The study subjects included 185 Korean police officers. Collected data were analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation and multiple regression with IBM SPSS Statistics 24.0 program. Job insecurity (${\beta}=-.34$, p<.001), job reward (${\beta}=.39$, p<.001), subjective health status (${\beta}=.22$, p<.001), and organizational justice (${\beta}=.20$, p=.002) were significant influencing factors on job engagement, explaining 59.3% of the variance (F=34.26, p<.001). Effective and systematic strategies to improve Korean police officers' job engagement should focus on job reward, job insecurity, subjective health status, and organizational justice. The results of this study can be utilized as base data to improve Korean police officers' job engagement.

• Proceedings of the Korea Database Society Conference
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• 1999.06a
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• pp.415-421
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• 1999

Altman의 연구(1965, 1977)나 Beaver의 연구(1986)와 같은 전통적 예측모형은 분석자의 판단에 따른 예측도가 높은 재무비율을 선정하여 다변량판별분석(MDA： multiple discriminant analysis), 로지스틱회귀분석 등과 같은 통계기법을 주로 이용해 왔으나 1980년 후반부터 인공지능 기법인 귀납적 학습방법, 인공신경망모형, 유전모형 둥이 부실기업예측에 응용되기 시작했다. 최근 연구에서는 인공신경망을 활용한 변수 및 모형개발에 관한 보고가 있다. 그러나 지금까지의 연구가 주로 기업의 재무적 비율지표를 고려한 모형에 치중되었으며 정성적 자료인 비재무지표에 대한 검증과 선정이 자의적으로 이루어져온 경향이었다. 또한 너무 많은 입력변수를 사용할 경우 다중공선성 문제를 유발시킬 위험을 내포하고 있다. 본 연구에서는 부실기업예측모형을 수립하기 위하여 정량적 요인인 재무적 지표변수와 정성적요인인 비재무적 지표변수를 모두 고려하였다. 재무적 지표변수는 상관분석 및 요인분석들을 통하여 유의한 변수들을 도출하였으며 비재무적 지표변수는 조직생태학내에서의 조직군내 조직사멸과 관련된 생태적 과정에 대한 요인들 중 조직군 내적요인으로 조직의 연령, 조직의 규모, 조직의 산업밀도를 도출하여 4개의 실험집단으로 분류하여 비재무적 지표변수를 보완하였다. 인공신경망은 다층퍼셉트론(multi-layer perceptrons)과 역방향 학습(back-propagation )알고리듬으로 입력변수와 출력변수, 그리고 하나의 은닉층을 가지는 3층 퍼셉트론(three layer perceptron)을 사용하였으며 은닉충의 노드(node)수는 3개를 사용하였다. 입력변수로 안정성, 활동성, 수익성, 성장성을 나타내는 재무적 지표변수와 조직규모, 조직연령, 그 조직이 속한 산업의 밀도를 비재무적 지표변수로 산정하여 로지스틱회귀 분석과 인공신경망 기법으로 검증하였다. 로지스틱회귀분석 결과에서는 재무적 지표변수 모형의 전체적 예측적중률이 87.50%인 반면에 재무/비재무적 지표모형은 90.18%로서 비재무적 지표변수 사용에 대한 개선의 효과가 나타났다. 표본기업들을 훈련과 시험용으로 구분하여 분석한 결과는 전체적으로 재무/비재무적 지표를 고려한 인공신경망기법의 예측적중률이 높은 것으로 나타났다. 즉, 로지스틱회귀분석의 재무적 지표모형은 훈련, 시험용이 84.45%, 85.10%인 반면, 재무/비재무적 지표모형은 84.45%, 85.08%로서 거의 동일한 예측적중률을 가졌으나 인공신경망기법 분석에서는 재무적 지표모형이 92.23%, 85.10%인 반면, 재무/비재무적 지표모형에서는 91.12%, 88.06%로서 향상된 예측적 중률을 나타내었다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2004.11a
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• pp.608-611
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• 2004

Efficiency of the construction process is one of the most important factors to project success. However efficiency is not well defined or measured in construction projects in general. More importantly, efficiency of the construction should be viewed through the life-cycle of the whole production system not in a single phase of the construction process. Therefore, this study defines the concept of efficiency and suggests the efficiency measurement model in construction. As a case study, the suggested model was applied to the curtain wall construction process of the high rise buildings as well.

• Management & Information Systems Review
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• v.28 no.2
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• pp.95-112
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• 2009

The paper investigates the determinants of firm's standardization activity in the Korean service industry. Standardization variables as dependent ones are standardization management at the firm level, domestic standardization activity, and international standardization activity. The independent variables include innovative activities(R&D intensity and patent application), firm size, export ratio, network, and firm's organization characteristics. We estimated the logistic regression model, using the data from 102 Korean service firms. The empirical findings are as follows. First, R&D intensity has a positive effect on international standardization activity, but not on the standardization management at the firm level and domestic standardization activity. Second, patent application has a negative effect on the standardization management at the firm level. Third, firm size doesn't have any influence on firms' standardization activities in the service sector. Fourth, the level of chief executive officer's interest on standardization is a very important factor in determining firms' efforts to participate standardization process, regardless of types of standardization activity.

• Journal of Technology Innovation
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• v.20 no.3
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• pp.1-28
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• 2012

This study conducted a qualitative analysis on the Korea's nuclear energy sector in 2030 through scenario-based strategic foresight method. Specifically, the relationships between environmental influencing factors of the future nuclear energy sector was examined from a multi-dimensional perspective on the basis of STEEP analysis and network analysis. In addition, scenario planning method was used with key uncertainty factors (KUF) to create three predictable strategic scenarios including optimistic, business as usual, and pessimistic. Common strategies that need to be urgently pursued as well as the maximum risk avoidance strategies for each scenario were also presented. This study further identified energy pricing, global economic trend, competitiveness in nuclear technology, and marketing capability as key uncertainty factors in the future nuclear energy industry sector. In order to furnish effective export strategy in the future nuclear energy sector, it was also suggested that government policy should adopt following measures as top priorities: securing nuclear safety technology, educating nuclear engineers, securing nuclear resources such as uranium, increasing nuclear capability and so on. The implications and limitations of this study were then discussed based on research findings.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.35 no.10
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• pp.1205-1210
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• 2011

Spinal instability known to be related to low back pain. However, the quantitative definition of spinal instability has not been established because there is a lack of consensus regarding clinical and radiological studies. In addition, the major factors affecting such instability have not been elucidated, although disc degeneration, disc injury, ligament injury, and isthmic defects are considered to result in such problems. In this study, individual and combined influences on spinal instability with a three-dimensional finite element model of a one-level lumbar spinal motion segment were investigated, under the assumption that the rotation and translation in the sagittal plane under flexion and extension represented the instability indices. The results could be helpful in understanding the causes and mechanisms of spinal instability in the lumbar spine.

• The Journal of Korean Association of Computer Education
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• v.11 no.6
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• pp.1-9
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• 2008

The goal of the education of Information Communication Ethics(ICE) is to improve the consciousness level of adolescents so that they themselves are able to judge between what's ethically right and wrong and, as a result, to take the right behavior. For this, we need to preferentially identify the primary factors in understanding and diagnosing the consciousness level of adolescents on the ICE. To solve this problem, in this paper, we identified four major indices that consist of the ICE consciousness through the meta analysis of the both domestic and international researches from the past 5 years in the related area and then, they are validated by experts. We also analyzed the factors in assessing the ICE consciousness level of adolescents by using the Delphi technique, which, during its analysis, even considers elements that are qualitative or cannot be objectified. Finally we deduced 22 ICE factors given the weight through the AHP of an expert group that consists of experienced teachers and professors in the related area.

• Management & Information Systems Review
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• v.29 no.4
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• pp.45-65
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• 2010

This study was to identify the effects of hotel organizational service orientation on CRM(customer relationship management) performance. The organizational service orientation has been considered very important for excellent service quality in many existing studies. The data were collected from employees in deluxe hotels of the metropolitan area with the questionnaire. To test the hypotheses, using AMOS were conducted for 379 respondents as a sample collected. The results show that customer's authority, service training, service reward significantly influenced to competitive advantage. Among the three variables the service reward was especially significant. In addition, competitive advantage significantly influenced to CRM performance (relationship commitment, image of corporation, customer's loyalty). So it is very important for employee to give a authority, share of service training program, give a reward what they want. Because that system can lead to the good performance. As a result, the CEO of hotel has to attention the organizational service orientation for achievement of the CRM performance.