• 정신신체의학
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• 제27권2호
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• pp.85-89
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• 2019

연구목적 본 연구는 후기청소년기에서 중증근무력증이 정신건강에 영향을 미치는 정도를 다면적 인성검사인 군인성 검사 결과를 통해 정량적으로 확인하고자 하였다. 방 법 우리는 2007년 2월부터 2010년 1월까지 병무청으로 군 신체검사를 받으러 방문한 19세 남성 중 다른 내외과 및 정신건강의학과 질환이 없는 건강한 대상자들 104명과 중증근무력증으로 확진 된 대상자들 26명의 군인성 검사 결과를 수집하고 분석하였다. 군인성검사는 미네소타 다면적 인성 검사와 비슷한 점수 체계를 가지고 있으며 한국의 징병 검사를 위해 개발되었다. 결 과 군인성검사 결과 중 타당도 척도인 긍정왜곡, 부정왜곡 및 희귀도 하위척도는 중증근무력증 환자 및 정상 대상자 간에 유의미한 차이를 보이지 않았다(t=-0.51, p=0.607 ; t=0.11, p=0.913 ; t=1.41, p=0.158). 신경증 척도에서는 신체화 하위척도 점수가 중증근무력증 환자에서 정상 대상자들에 비해 유의하게 높았다(t=2.29, p=0.023). 정신증 척도에서는 정신분열 하위척도 점수가 중증근무력증 환자에서 정상 대상자들에 비해 더 낮았다(t=-2.38, p=0.018). 결 론 MPI 결과로 미루어 볼 때 후기 청소년기 중증근무력증 환자는 본인의 신체증상에 다소 예민한 상태이며 질병을 관리하는 과정에서 다른 정상 대상자에 비하여 규칙을 더 잘 지키려고 하고 더욱 관습적으로 행동하려는 경향이 있을 것으로 유추해 볼 수 있다.

• 대한산업공학회지
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• 제28권1호
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• pp.1-13
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• 2002

We study a multi-component production/inventory system in which individual components are made to meet various demand types. We assume that the demands arrive according to a Poisson process, but there is a fixed probability that a demand requests a particular kit of different components. Each component is produced by a flow line with several stations. The production of each component is operated by the CONWIP control mechanism. To analyse this system, we propose an approximation method based on aggregation method. In application of the aggregation method, a product-form approximation technique as well as a matrix-geometric method is used. Comparisons with simulation show that the approximation method provides fairly good results.

• 경영과학
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• 제19권1호
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• pp.107-116
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• 2002

A major challenge to supply chain managers is how to control inventories and costs along the supply chain while maximizing customer service Performance. In the literature, although the optimal management of inventory along the supply chain has received considerable attention during the past decades, the attention has been mainly given to multi-echelon control policies. A prerequisite for applying these policies is full information transparency in the supply chain, which is hard to accomplish in practice because it may require major organizational chanties. In the case that a decentralized control (local (R, S) policy) should be used at each location in multi-stave distribution systems, this paper presents the coordinating approach of determining the best policy which satisfies predetermined target customer service levels and minimizes the mean physical stock along the system.

• 한국국방경영분석학회지
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• 제3권1호
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• pp.15-23
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• 1977

• 경영과학
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• 제10권2호
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• pp.43-59
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• 1993

A production control information system developed for multi-product, small-lot-sized production is presented. The system is composed of interrelated modules for production planning, shop floor control, and inventory/material management. The architecture of the system, functions of each module, and information processing procedures of each function are discussed.

• Management Science and Financial Engineering
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• 제22권1호
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• pp.1-4
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• 2016

We consider a two-tier supply chain with multiplicative random yield. We focus on the supply chain performance with respect to the control scheme of determining the production lot size. The profit loss due to distributed control is analyzed to give an insight for devising efficient supply contracts.

• 한국국방경영분석학회지
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• 제3권2호
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• pp.79-89
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• 1977

The purpose of this thesis is to overcome the shortcomings of the existing system which lacks cost-conciousness and does not consider the essentiality or the importance of an item, and to seek the method of providing effective, efficient and economic supply which is the objective of the military inventory management. Selective management technique and lot size model whose demand, and order and shipping time are distributed, are intorduced, and required distributions and parameters are analyzed. Finally hypothetical data are utilized to obtain the model output, which are compared with the existing model and analyzed.

• 물과 미래
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• 제16권3호
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• pp.159-169
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• 1983

본 연구는 하천의 DO 기준을 유지하기 위해 하천유역내의 각 처리장에 요구되는 폐수처리의 최적효율과 최소처리비용의 조합을 결정하는 선형계획법에 있어서 제약조건의 제식(inventory equations)으로 이용되는 Camp-Dobbinstlr과 Streeter-Phelps 식에 의한 최적수질관리의 해를 상호 비교분석하였다. 그 결과 상관관계가 0.997로 강상관관계를 보여 주었고 측정하기 어려운 R, A, K$$의 파라메터를 영으로 가정한 Streeter-Phelpstlr을 선형계획법의 제약조건의 제식으로 사용하여 최적해를 구하여도 만족함을 줄 수 있음을 알았으며 이 결과로 실제 하천유역을 대상으로 하여 하천유역의 최적수질 관리의 해를 구하였다.

• 말소리와 음성과학
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• 제4권1호
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• pp.91-98
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• 2012

The purposes of this paper is to study the characteristics of compared to the speakers voice without depression and speakers with depression, and to propose a objective method for the measurement of the therapeutic effects as well as for diagnostics of depression based on the characteristics. The voice samples obtained from 11 female speakers with depression, aged from 20 to 40, diagnosed as having major depressive disorder by an psychiatrist were compared with those from 12 normal controls with matched sex, age, height, weight, education, smoking, and drinking. The voice samples are taken by a portable digital recorder(TASCAM DR-07, Japan) and analysed using the MDVP(Multi-Dimentional Voice Program) software module from CSL(Computerized Speech Lab, kay elemetrics, co, model 4100). The result of the investigation are as following. First, the average speaking fundamental frequency and loudness range of the speakers with depression group was statistically significantly lower than that of the control group. The pitch range of the control group was rather higher than that of the speakers with depression group, but without statistical significance. Overall speech rates have no statistical difference between two groups. Second, the average speaking fundamental frequency and loudness range have statistically significant negative correlation with Beck Depression Inventory, i. e. more severe depression exhibits lower average speaking fundamental frequency and loudness range. Other vocal parameters such as pitch range and overall speech rate have no statistically meaningful correlations with Beck Depression Inventory.

• 산업경영시스템학회지
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• 제15권25호
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• pp.63-74
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• 1992

This study proposes D- shortage control system which is a convenient tool for cooperative companies to reduce shortages which frequently break out between the manufacturing companies and the cooperative companies. On the ground of theoretical analysis of MRP and JIT system, D- shortage control system sets up a schedule that secures the delivery date by precedent scheduling( D-) comparing with MRP It also syncronizes business, production and release, and builds the pull system comparing with JIT. The factors causing shotages are the scheduling absurdity and the controlling absurdity. The scheduling absurdity can be settled by the calculating required quantity method of MRP and the controlling absurdity can be settled by daily control of business, production and pruchasing fuctions by the pull system of JIT. And the inventory and the WIP can be reduced by the operating of PULL system and by the settlement of D- shortage control practices. The Application of D- shortage control system, therefore, enables the rationalization of logistics and reduces the inventory And it leads to the reinforced competitiveness and the security of subsistence of manufacturer by the cost ruduction, the reduction of financial difficulty, and the insurance of the delivery date.