• Journal of the Korean Data and Information Science Society
• /
• 제22권1호
• /
• pp.65-71
• /
• 2011

경로분석은 변수 사이의 관계를 규명하는 방법으로 회귀분석에서 파악하기 어려운 직접효과와 간접효과, 의사효과를 파악할 수 있는 장점이 있다. 본 연구에서는 골프경기에서 가장 중요한 경기력 요소를 이용하여 평균타수에 어떻게 직접, 간접적으로 영향을 미치는가를 경로분석을 통하여 연구하였으며 자료는 2010년 남자프로골프선수 상위권 186명을 이용하였다.

• 한국응급구조학회지
• /
• 제25권2호
• /
• pp.7-18
• /
• 2021

Purpose: This study aimed to present the learning items of indirect practice as an alternative means of ambulance riding practice. Methods: Twelve on-site professionals participated in testing the effectiveness of learning items of utility value in indirect experience practice among the recommended learning objectives of ambulance ride practice using the modified Delphi technique. To validate the learning objectives, the Delphi technique was used to check content validity, and analytic hierarchy process (AHP) analysis was used to analyze the weighting value. Results: As the learning goal of indirect experience practice replaced the ambulance riding practice, four items were derived in consideration of practicality. These items were consistent with the Delphi panel's consistency index, convergence, and agreement. The first learning item to consider was 'Prevention of infection and risk of infection.' Conclusion: The results of this study are meaningful in that they propose the learning items that can achieve the minimum educational goal through indirect experience practice as an alternative means of ambulance training.

• 한국안전학회지
• /
• 제30권1호
• /
• pp.1-7
• /
• 2015

This study first addresses the ineffectiveness of indirect regulation on industrial machines. Analysis of causes of industrial accidents associated with industrial machines further reveals the fact that technical causes need to be resolved at the manufacturing stage to reduce the frequency and strength of industrial accidents. Balanced safety certification on manufacturers and safety inspection on users of industrial machines are then suggested to effectively resolve such technical causes. The effectiveness of such safety certification and safety inspection can be justified by cost-benefit analysis. Particularly, balance in expected benefits of safety certification and safety inspection is a key issue for validity of such analysis. The accumulated benefit-costs for press brake and portable sawing machine confirm the effectiveness of such safety system.

• 가정∙방문간호학회지
• /
• 제18권1호
• /
• pp.13-19
• /
• 2011

Purpose: The aim of this study was to evaluate patient satisfaction and indirect marketing effects (recommendation, hospital re-visit intention) and additionally to calculate the expected incomes by clinical nurse specialists (CNS). Methods: Sixty-six patients who had lower varicose vein removal surgery performed at two general hospitals from August 1 to November 30, 2008, were recruited. The effects were evaluated by degree of patient satisfaction, the number of personal recommendations given, rate of hospital re-visit intention, and indirect marketing effects. Indirect marketing effects were calculated as the total cost of surgery multiplied by the score of other variables. Results: The patient satisfaction score was 0.82 for CNS and 0.43 for general nurses (GN). The number of personal recommendations given was 2.5 for CNS and 1.1 for GN. The rate of hospital re-visit intention was 0.31 for CNS and 0.21 fot GN. The ratio of expected incomes between CNS and GN is 2.07 to 1. Conclusion: We found that when a CNS serves a patient, satisfaction, number of personal recommendations, hospital re-visit intention, and indirect marketing effects were higher than those of GN. These results show that CNS have dominant roles and functions and that the effects of CNS employment can be measured using economics parameters.

• Journal of Power Electronics
• /
• 제19권4호
• /
• pp.944-955
• /
• 2019

In this paper, the three-level T-type neutral-point-clamped indirect matrix converter topology and the relative space vector modulation methods are introduced to improve the voltage transfer ratio and output voltage performance. The presented converter topology is based on combinations of cascaded-rectifier and three-level T-type neutral-point-clamp inverter. It can overcome the limitation of voltage transfer ratio of the conventional matrix converter and the high voltage rating of power switches of conventional matrix converter. Two SVPWM strategies for proposed converter are described in this paper to achieve the advantages features such as: sinusoidal input/output currents and three-level output voltage waveforms. Results from Psim 9.0 software simulation are provided to confirm the theoretical analysis. Hence, a laboratory prototype was implemented, and the experimental results are shown to validate the simulation results and to verify the effectiveness of the proposed topology and modulation strategies.

• 한국전산구조공학회:학술대회논문집
• /
• 한국전산구조공학회 2004년도 가을 학술발표회 논문집
• /
• pp.150-156
• /
• 2004

Though the concept of Life-Cycle Cost (LCC) itself is not new, its effectiveness for planning, design, rehabilitation and maintenance/management of civil infrastructures is becoming increasingly recognized. For the decision problems as in the case of the LCC of plant facilities, equipments, bridge decks, pavements, etc., the Life-Cycle Cost Analysis (LCCA) is relatively simple, and thus its practical implementation is rather straightforward. However, when it comes to major infrastructures such as bridge, tunnels, underground facilities, etc., the LCCA problem becomes extremely complex because lack of cost data associated with various direct and indirect losses, and the absence of uncertainty data available for the assessment as well. As a result, the LCC studies have been largely limited only to those relatively simple LCCA problems of planning or conceptual design for making decisions. Accordingly, in the recent years, the researchers have pursued extensive studies on the LCC effectiveness mostly related to LCC models and frameworks for civil infrastructures. Moreover, recently the demand on the practical application of LCC effective decisions in design and maintenance is rapidly growing unprecedently in civil engineering practice. Indirction cost is very important on LCC formulation. But that is very difficult and complicate the estimation every LCC. The objective of this paper is to suggest efficient regression model for the estimation of indirect cost approach to the practical application of LCC for the design and rehabilitation of civil. infrastructures considering traffic, traffic network, detour condition, and workzone condition. In this paper, it performed the sensitivity analysis and correlation analysis of parameter for development of regression model of inflection cost.

• 대한간호학회지
• /
• 제39권2호
• /
• pp.229-236
• /
• 2009

Purpose: This study was a secondary analysis to verify the mediating role of organizational citizenship behavior (OCB) between organizational justice (OJ) and organizational effectiveness (OE) in nursing organizations. Methods: The RN-BSNs and their colleagues in Seoul and Busan were subjects. The data was collected for 20 days between September 13 and October 2, 2004. Two hundred eighty three data sets were used for the final analysis. The fitness of models were tested using AMOS 5. Results: The fitness of hypothetical model was moderate. Procedural Justice (PJ), Interaction Justice (IJ) and Distributive Justice (DJ) had direct effects on Job Satisfaction (JS), Organizational Commitment (OC) and Turnover Intention (TI) in OE, and indirect effects on JS, OC and TI mediated by OCB. The modified model improved with ideal fitness showed the causal relations among OE. In modified model, PJ, IJ and DJ had direct positive effects on OCB and JS and OC in OE, and indirect effects on JS and OC mediated by OCB. JS and OC in OE had a direct negative effect on TI. Conclusion: OCB mediated the relationship between OJ and OE, so the nursing managers should enhance OCB of the nurses in order to improve OE.

• Computational Structural Engineering : An International Journal
• /
• 제1권1호
• /
• pp.59-69
• /
• 2001

This study is intended to propose a systematic approach for reliability-based assessment of life cycle cost (LCC) effectiveness and economic efficiency for cost-effective seismic upgrading of existing bridges. The LCC function is expressed as the sum of the upgrading cost and all the discounted life cycle damage costs, which is formulated as a function of the Park-Ang damage index and structural damage probability. The damage costs are expressed in terms of direct damage costs such as repair/replacement costs, human losses and property damage costs, and indirect damage costs such as road user costs and indirect regional economic losses. For dealing with a variety of uncertainties associated with earthquake loads and capacities, a simulation-based reliability approach is used. The SMART-DRAIN-2DX, which is a modified version of the well-known DRAIN-2DX, is extended by incor-porating LCC analysis based on the LCC function developed in the study. Economic efficiencies for optimal seismic upgradings of the continuous PC segmental bridges are assessed using the proposed LCC functions and benefit-cost ratio.

• 문화기술의 융합
• /
• 제7권1호
• /
• pp.111-116
• /
• 2021

빠르게 변화하는 경영환경에 따라 상시적인 구조조정, 고용불안의 증가는 종업원들로 하여금 조직에 대한 냉소적 태도를 가지도록 하였다. 이러한 조직 냉소주의의 확산은 조직 내 지원적 분위기를 저해하고, 조직효과성에도 부정적인 영향을 미칠 것으로 여겨진다. 본 논문은 조직 구성원들이 갖는 냉소주의적 태도가 조직의 지원적 분위기와 조직효과성에 미치는 효과 및 지원적 분위기가 조직효과성에 미치는 효과에 대해 분석하였다. 본 연구를 위한 자료는 충북 혁신도시에 있는 공공기관이 2015년에 실시한 조직혁신 프로그램을 위한 설문조사에서 응답한 172명의 자료를 사용하였다. 본 연구의 연구모형을 분석하기 위해 구조방정식 분석 방법을 활용하였다. 분석결과를 보면 지원적 분위기는 조직효과성에 긍정적인 영향을 미쳤다. 그리고 냉소주의는 지원적 분위기에 부정적인 효과를 보였다. 냉소주의가 조직효과성에 대해서는 유의한 효과를 보이지 않았지만, 조직분위기를 통해 조직효과성에 부정적인 간접효과가 있음을 밝혔다.

• 산업공학
• /
• 제23권4호
• /
• pp.319-326
• /
• 2010

The SMB supercomputing service provides a supercomputing infrastructure for Small and Medium-sized Business (SMB) to enhance the efficiency of product development activity. In this study, the economic value of SMB supercomputing service is presented. The economic value of service is comprised of a direct and an indirect economic value. A direct economic value was estimated based on the result of user survey on service effectiveness. The input-output analysis method was adopted to estimate an indirect economic value induced from a direct economic value. The future economic value based on the result of user demand survey is also presented. As a result, the annual and future economic value of service were estimated about 55,215 million won and 323,928 million won, respectively.