• 경영과정보연구
• /
• 제38권4호
• /
• pp.159-182
• /
• 2019

본 연구의 목적은 군 조직구조 개편 시 부대의 변화관리활동(인사공정성, 변혁적 리더십) 노력에 대한 구성원들의 지각이 구성원들의 정서적 직몰입에 미치는 영향을 조사하고, 이들 관계에서 구성원의 변화수용의 정도에 따른 매개효과를 연구하는데 있다. 현재 군은 급변하는 안보상황과 병역자원의 감소에 능동적으로 대응하기 위하여 군 구조 개편을 추진하고 있다. 조직이 구조조정을 겪을 때 변화관리활동을 효과적으로 하지 못하면 구성원의 저항에 부딪히고 자칫 성공을 기대하기 어렵다. 따라서 본 연구는 구성원의 인사공정성 및 변혁적 리더십 지각이 구성원의 정서적 조직몰입에 미치는 영향인 직접효과를 가설화 하였다. 또한 인사공정성 지각과 정서적 조직몰입 사이에서 변화수용의 매개효과와 마찬가지로 변혁적 리더십 지각과 정서적 조직몰입 사이에서 변화수용의 매개효과를 위한 가설을 설정하였다. 설문은 군 구조개혁의 변화를 경험한 부대의 간부들을 대상으로 실시하였으며 유효 설문응답자는 219명이었다. 분석 결과, 인사공정성과 변혁적 리더십이 구성원의 정서적 조직몰입에 긍정적 영향을 주었으며, 구성원의 변화수용이 이들 간의 관계를 부분적으로 매개함을 밝혔다. 이론적 시사점으로 변화수용의 매개효과를 제시함으로써 이론의 확대를 가져왔고, 실무적으로는 군 구조개편을 위한 변화관리활동 중 인사공정성과 변혁적 리더십의 중요성을 식별하였으며 구성원들의 변화수용 향상을 위한 노력이 중요함을 제시하였다.

• 한국항해항만학회지
• /
• 제37권4호
• /
• pp.429-438
• /
• 2013

본 연구는 해운기업 선박조직의 특수한 환경을 고려하여 선박조직의 구성원들의 속성신뢰가 집단 구성원간의 상호호의적인 태도인 집단응집성과 조직시민행동 및 선박조직의 유효성에 어떠한 영향을 미치는지를 실증적으로 분석해 보고자 하였다. 실증분석 결과, 속성신뢰가 집단응집성에 통계적으로 유의적인 정의 영향을 미치고 있는 것으로 나타났으며, 집단응집성은 조직시민행동과 조직몰입 및 직무만족에 통계적으로 유의적인 정의 영향을 미치고 있는 것으로 나타났다. 그리고 선박조직 구성원의 속성신뢰가 조직시민행동과 조직몰입 및 직무만족에 미치는 영향에 있어서 집단응집성이 부분매개 효과가 있는 것으로 나타났다. 본 연구는 선박조직의 개별 구성원 태도와 행동보다는 선박단위별로 속성신뢰, 집단응집성, 조직시민행동, 직무만족 및 조직몰입의 수준을 측정하고, 이들의 영향력 관계를 분석함으로써, 선박별 인력관리 및 인간관계 측면의 관리방안을 모색하도록 하였다.

• 보건행정학회지
• /
• 제15권4호
• /
• pp.110-135
• /
• 2005

The objectives of this study were (1) to describe doctors' perception and attitudes toward patient safety culture and medical error reporting in their working unit and hospitals, (2) to examine whether these perception and attitudes differ by doctors' characteristics, such as sex, position, and specialties, and (3) to understand the relationship between overall perception of patient safety in their working unit and each sub domain of patient safety culture. A survey was conducted with 135 doctors working in a university hospital in Korea. After descriptive analyses and chi-square tests of subgroup differences, a multivariate-regression of overall perception of patient safety in their unit with sub-domains of patient safety culture was conducted. Overall, a significant proportion of doctors expressed negative perception of their working units' patient safety culture, many reporting potentials for patient safety problems to occur in their unit. They also negatively viewed their hospital leadership's commitment on patient safety. Regarding the patient safety in their working unit, doctors were most worried about staffing level and observance of safety procedures. Most doctors did not know how and which medical error to report. They also perceived that medical errors would work against them personally and penalize them. About 22 percent of respondents believed that even seriously harmful medical errors were not reported.

• 한국군사과학기술학회지
• /
• 제20권2호
• /
• pp.279-288
• /
• 2017

The Material Transportation Capability Analysis Method in North Korea includes adversary's activities such as destruction of bridge which is one kind of choke points in the road network and surprise attack against resupply march unit. Also, the amount of damage on choke points in the road network and repair time depending on repair unit commitment must be reflected. In this study, a scenario encompassing plausible resupply transportation circumstances while counterattacking into NK will be established. Then, based on such scenario, a simulation model will be established and the result of simulation will be compared to the results of numeric example which has been used in the ROK Army. We demonstrate, through a certain Corps operation area, that the Scenario-based Simulation Model results predict the performance of resupply operation very well. Therefore, it makes sustainment planners and commanders do activities which is suitable for battlefield and should be used in the real situation. It is also a stochastic model.

• 한국경영과학회:학술대회논문집
• /
• 한국경영과학회/대한산업공학회 2005년도 춘계공동학술대회 발표논문
• /
• pp.938-946
• /
• 2005

We study the firm's strategy to price its products and plan the spare parts manufacturing so as to maximize its profit and at the same time to fulfill its commitment to providing the customers with the key parts continuously over the relevant decision time horizon, i.e., the production plus warrantee period. To examine the research question, we developed and solved a two-stage optimal control theory model. Our analysis suggests that if the cost to produce the spare part during the warrantee period is more expensive than that during the production period, the firm should increase its sales price gradually throughout the production period to control its sales. In addition, during the production period it is optimal for the firm to produce the spare parts more than needed so that the overproduced spare parts can be used to partially meet the demand during the warrantee period. We conducted numerical analysis to investigate the sensitivity dynamics among key variables and parameters such as inventory holding cost, unit spare part production costs, part failure rate, and parameters in the demand function.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2008년도 추계학술대회 논문집 전력기술부문
• /
• pp.457-459
• /
• 2008

This paper presents the optimization of CHP (Combined heat and power) plant under deregulated market. In this case, a boiler is added as different source for heat providing, that gives flexible and efficient operation for the plant. The purpose of optimization is to maximize the profit in period of 24 hours by making unit commitment decision, called "optimal policy". In this paper, Dynamic Programming method is introduced as the effective and efficient method. Finally, an example is solved to illustrate the optimal Policy of such a CHP and boiler.

• Journal of Power Electronics
• /
• 제9권6호
• /
• pp.919-928
• /
• 2009

Microgrids (MGs) are typically comprised of distributed generators (DGs) including renewable energy sources (RESs), storage devices and controllable loads, which can operate in either interconnected or isolated mode from the main distribution grid. This paper introduces a novel dynamic programming (DP) approach to MG optimization which takes into consideration the coordination of energy supply in terms of heat and electricity. The DP method has been applied successfully to several cases in power system operations. In this paper, a special emphasis is placed on the uncontrollability of RESs, the constraints of DGs, and the application of demand response (DR) programs such as directed load control (DLC), interruptible/curtaillable (I/C) service, and/or demand-side bidding (DSB) in the deregulated market. Finally, in order to illustrate the optimization results, this approach is applied to a couple of examples of MGs in a certain configuration. The results also show the maximum profit that can be achieved.

• 전기학회논문지
• /
• 제56권10호
• /
• pp.1721-1730
• /
• 2007

SThis paper proposes a new dispatch scheduling algorithm in interconnected regional system operations. The dispatch scheduling formulated as mixed integer non-linear programming (MINLP) problem can efficiently be computed by generalized Benders decomposition (GBD) algorithm. GBD guarantees adequate computation speed and solution convergency since it decomposes a primal problem into a master problem and subproblems for simplicity. In addition, the inter-temporal optimal power flow (OPF) subproblem of the dispatch scheduling problem is comprised of various variables and constraints considering time-continuity and it makes the inter-temporal OPF complex due to increased dimensions of the optimization problem. In this paper, regional decomposition technique based on auxiliary problem principle (APP) algorithm is introduced to obtain efficient inter-temporal OPF solution through the parallel implementation. In addition, it can find the most economic dispatch schedule incorporating power transaction without private information open. Therefore, it can be expanded as an efficient dispatch scheduling model for interconnected system operation.

• 조명전기설비학회논문지
• /
• 제26권12호
• /
• pp.93-98
• /
• 2012

Economics of available alternatives in the transmission planning are evaluated by the investment cost, loss cost and congestion cost. Congestion/loss cost is calculated in many years and many load levels by unit commitment of generators, optimal dispatch, load flow, judgement about transmission congestion and re-dispatch to reduce the congestion. The greatest difficulties to introduce variable optimization techniques on the transmission planning is the convergence of load flow. In this paper, economics in the transmission planning are evaluated using DC load flow, and case study is conducted on the Korea power system by proposed congestion/loss calculation methods.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
• /
• pp.831-833
• /
• 2005

과거 전력산업의 독점체제에서 발전기 기동 정지계획은 1-7일 정도의 예측된 부하를 최소비용으로 공급하기 위해서 발전기의 정보만을 고려하여 수요에 부합되도록 결정되었다. 향후 전개될 전력시장의 형태인 완전경쟁시장에서는 각 발전사업자가 자신의 발전기들을 대상으로 이익을 최대화하기 위한 입찰전략으로서의 기동정지계획을 수립하게 된다. 본 논문에서는 이익극대화로서의 발전사업자 기동정지계획을 수립함에 있어 유전알고리즘을 적용하였다. 또한 발전사업자의 입찰전략에 주요한 요소로 작용하는 입찰량 결정에 있어서 발전기 증감발율을 고려하여 최적의 발전량을 결정하도록 하였다.