經營意思決定을 爲한 計量分析/O.R의 接近方式과 그 適用

鄭忠泳,李東萬 慶北大學校 1979 論文集 Vol.27 No.-

Modern Management is concentrated on the decision-making theory. This paper tells about Quantitative Analysis/O.R., tools of the evaluation for decision-making whose procedure is consisted of a set of problem definition, evaluation, and selection of alternatives. Definition and feature of Quantitative Analysis/O.R and model buildings are involved in this paper and methods of Q.A/O.R are compared with scietific method, decision-making procedure and model building procedure. In addition, main models of Q.A/O.R are analyzed into objective, assumption, constraints, and formulars. Then the fields of management to which Q.A/O.R is well applied are introduced.

MIS開發의 方法論과 開發節次에 關한 考察

鄭忠泳,李東萬 慶北大學校 1979 論文集 Vol.27 No.-

The purpose of this paper is to present the methodologies of Management Information Systems development and to show a survey of how authors view development of systems, usually with application to MIS. In dealing with the methodologies of MIS development, three methodologies are as follows; (1) Systems Analysis-oriented Methodology (2) Systems Design-oriented Methodology, (3) Integrated Methodology. In a real-world situation, the general approach to MIS development is the Integrated Methodology that coordinates system analysis and system design. On the other hand, the procedure or steps for MIS development are described differently by various authors. So, there is general agreement on the flows of MIS development procedure and the necessity for control over the development cycle. In this sense, the following is an attempt to make general MIS development procedure. (1) System Definition and Analysis (2) System Design (3) System Implementation (4) Operation. The above four activities are carried out in parallel and there is much iteration or recycling to refine the design. In conclusion, MIS should be installed and developed in terms of overall effectiveness, and economical problem in order to realistic management functions. MIS must be designed and operated without the involvement of the computer and automated processing techniques.

별정통신사업과 상호접속제도 분석

정충영 한국산업조직학회 2005 産業組織硏究 Vol.13 No.2

본 연구는 별정통신사업자에게 상호접속기준을 적용하는 것에 대한 타당성을 검토하고 향후 이것과 관련된 정책적 이슈를 살펴본다. 현재 기간통신사업자간 상호접속시 상호접속기준이 적용되고 있지만 별정통신사업자의 경우 기간사업자가 정하는 이용약관에 따라 망사용대가가 결정된다. 본 연구에서는 현재 별정통신사업자가 기간통신망을 사용하는 형태와 이용대가의 산정체계를 살펴보고 상호접속기준의 적용을 받게 되는 경우 접속체계와 대가수준이 어떻게 변화할 것이며 사업자별로 어떠한 효과가 있는 것인가를 분석하고 정책적 시사점을 제시한다. 향후 별정통신사업의 건실한 발전과 사업자간 공정경쟁을 통한 경제적 혜택을 달성하기 위해서는 어느 특정 부류에게만 유리한 정책을 펼쳐서는 안되며 설비보유사업자와 미보유사업자간 공정경쟁을 보장하기 위한 제도적 장치가 필요한 것이지 상호접속기준 적용여부가 중요한 것은 아니다. 제도적 장치의 예로서는 별정통신사업자의 이동망 사업진출 허용, 망연동 이용약관제도 개선, 기간통신사업자의 별정통신사업 운영시 조직 및 회계분리 등을 통한 행위규제 등을 생각할 수 있다. In this paper, we investigate the rationality to apply the interconnection scheme to reseller and related policy issues. Now, the interconnection scheme is applied between common carriers and user contracts is applied between resellers for network access charge. The present paper reviews the architecture of using the common carrier network by reseller and pricing structure. After these, which changes of interconnection system and access charge are derived from application of interconnection scheme to reseller. Finally, this paper proposes some policy implications to induce efficient development of resale and fair competitions, For examples of policy instruments, the allowing of reseller to entry into mobile, the improvement of network inter-working contracts between resellers, and the split of organization and accounting of service provision from network parts are recommendable.

MIS의 學問領域設定 및 그 體係化

鄭忠泳 慶北大學校 1981 論文集 Vol.32 No.-

For studying MIS scientifically, we must investigate its objects and methodologies and systematize them. MIS must deal with the whole field of management, because it deals with informations related to management overall. As its research methodology, not only deductive and inductive approach which are universally applicable but special approaches for MIS should be applied. The scope of MIS studies can be divided broadly into three categories: intellectual resource, expertise and skill. To define them clearly and to systematize MIS studies through system approach and decision theory which are the prop and stay of modern management is the key points of this study.

복수사업자를 경유한 인터넷 접속유형 및 정산 방안

정충영,Jung,,C.Y. 한국전자통신연구원 2001 전자통신동향분석 Vol.16 No.5

공중전화망을 통해 인터넷에 접속할 수 있는 가장 흔한 방법은 다이얼 접속이다. 다이얼 접속방법에는 접속하는 사업자 수에 따라 크게 두 가지의 접속방법이 있다. 접속을 제공하는 전화망 사업자의 수가 하나인 경우는 보통의 인터넷 접속의 형태이며 전화망 사업자가 두 개인 경우는 인터넷 사업자가 직접접속하고 있는 사업자와 인터넷 이용자가 속해 있는 사업자가 서로 다르다는 것이 특징이다. 즉 인터넷 이용자는 착신측 사업자망을 경유하여 인터넷 접속서비스를 제공받는다는 것이다. 현재 유럽에서는 그중 인터넷 접속 시 복수사업자를 경유하여 접속하는 방법이 가장 특징적이다. 본 고에서는 접속사업자 수 및 접속형태에 따른 접속료 정산방안 모델과 유럽의 사례들과 함께 시사점을 살펴보고 있다.

MRP환경에서 제품결합을 위한 퍼지다목적계획모형

정충영,임지영 한국의사결정학회 1998 경영과학연구 Vol.7 No.-

This paper provides fuzzy multiple objectives programming models for optimal product-mix decisions in MRP environments. In MRP dependent demand inventory and independent demand inventory are most important concepts. Harnish C. Bahi, Sharam Taj and Wayne Corcoran used linear programming(LP) model, which is extended by applying Jung's model to solve optimal product-mix decision problems. To make decision-makers need to obtain input data, such as the profit/cost, goals, available resources or available labor hours. However input data may not be precisely determined because of incomplete or non-obtainable information. Therefore fuzzy concept is more acceptable than crisp mathematical models for dealing with uncertainty. Jung suggested preference-based nonmembership functions considering weights and preemptive priorities to each objectives. We also consider multiple objectives. We suppose imaginary factory to test validation. It is assumed that the factory products ten kinds of items, that each items are not only producted in the factory but also purchased from the outside to satisfy both internal and external demand, decision makers in this imaginary factory considers five objectives and that the factory has six workstations. Finally, we can solve the problem using GP s/w or LP s/w. In this paper we use LINDO which is one of the LP softwares.

MIS의 效率評價를 위한 槪念模型의 設計

鄭忠泳 경북대학교 경제경영연구소 1989 經商論集 Vol.17 No.4

Recently, Management Information Systems (MIS) have gained importance largely because management decision-making is performed on the basis of information. In fact, MIS brings forth two kinds of benefit, which are passive/direct benefit-cost reduction, and active/indirect benefit rational decision-making. The former is tangible, while the latter is intangible. As MIS is related to decision-making, the evaluation of MIS should be analyzed in terms of the rationalization of decision-making rather than cost reduction. However, many researches of recent years have focused on the passive benefit such as cost reduction, and on the other hand, the studies on the active benefit have been very inactive because of the difficulty of verifying them. In this study, a quantitative model for MIS effectiveness analysis based on the conversion concept is proposed and tested for measuring the effectiveness of MIS with respect to two points of view in evaluating MIS--efficiency-oriented and effectiveness-oriented point of view. To accomplish the objective in this study, the conceptual model is designed based on a series of formative studies. Until the present time, many researches have dealt with very limited points of view either on cost reduction, or on the user's satisfaction level with MIS. However in this paper the management system is exploded into three subsystems : Data Processing System (DPS), Operational Control System (OCS), and Management Control System (MCS), and the variables are taken into consideration for example cost reduction, the utilization level of capacity, and the optimization level of resource allocation, respectively. The effectiveness of each subsystem could be measured on the basis of the improved performance of the subsystem depending upon the values of those variables. Thus the effectiveness of individual subsystems is integrated into one single model to analyze the total MIS effectiveness. The detailed working model for conversion efficiency is as follows: eff^1=(I_PW-I_NW)/(I_NW) eff^2=(E(u|λ, N)-E(u|λ, P))/(E(u|λ, P)) eff^3=(E(u|K, N)-E(u|K, P))/(E(u|K, P) Eff=α_1 eff^1+α_2 eff^2+αeff^3 α_i>0, α_1+α_2+α_3=0. If a management system can be classified into three levels, such as management system level one (MSL (1)), level two(MSL (2)), and level three (MSL (3)) in accordance with the hierarchically structured levels, we can calculate the effectiveness of MIS, letting α_2=α_3=0 at MSL(1), α_3=0 at MSL (2), and α_1>0, α_2>0, α_3>0 at MSL (3). So we can compute conversion effectiveness, by assigning the values of a_1, a_2, a_3 in accordance with the levels of a specific management system, and when effectiveness of MIS is nonegative, the conversion of MIS may proceed.

이동망 음성 및 데이터 공유설비 비용배분 방안

정충영,Jung,Choong-young 한국정보통신학회 2004 한국정보통신학회논문지 Vol.8 No.8

음성 및 데이터 비용분리는 이동망 착신접속료 산정에 있어 음성트래픽과 관련된 비용만을 접속원가에 포함시키기 위한 것이다. 이에 대한 방안으로는 단일통화량 기준, 설비기준, 수익기준, 램지기준, 초고속망 비용배분 벤치마킹 등 여러가지가 있을 수 있으며 각각의 장단점을 비교하는 것이 중요하다. 본 연구에서는 먼저 비용배분에 대한 이론적 고찰을 수행하고 각각의 장단점 분석을 수행하고 있다. 또한 해외 정책적 연구와 관련된 사례분석을 통해 해외에서 적용하고 있는 논리를 검토하고 국내에 있어 도입시 고려해야 할 요소에 대해 살펴보고 있다. 초기에는 영국의 망세분화시 공유회선의 제공에 대해 50:50의 공통비용 배분방식을 도입하는 것을 고려해 볼 만하다. 이후에는 음성과 데이터 트래픽이 같아지는 시점이 오면 비율배분방식을 적용함으로써 증가된 데이터 트래픽에 따른 비용발생을 적절하게 고려할 수 있을 것이다. This paper discusses cost allocation model of common facilities in voice and data traffic of mobile telephone network. There are several methods to be considered including traffic, facility, revenue, Ramsey, and benchmarking in local loop unbundling for High Speed Internet. It is important to investigate the strength and weakness of each method. This paper reviews the theoretical literatures and compares the characteristics of each methodology. Also, case studies are employed to get the implications concerned. As a result, in the beginning, it is desirable to introduce 50:50 allocation method used in local loop unbundling in UK. Then, it is recommendable to apply the ratio allocation method as the quantities of voice and data traffic become equal.

NGN하에서의 접속료 정산체계 대안 분석

정충영,변재호,정송민,Jung,,Choong-Young,Byun,,Jae-Ho,Jung,,Song-Min 한국정보통신학회 2011 한국정보통신학회논문지 Vol.15 No.5

It is important to set the new interconnection system under NGN. The traditional interconnection system is based on traffic, but this is not suitable for IP based service. Therefore, it is needed to ensure the universal access to network without trouble about the network topology. This paper prepares the evaluation criteria and evaluates the alternatives. Specifically, we deduce the alternatives and evaluates the alternatives of interconnection settlement system based on the condition of efficient interconnection, the retail price and access charging model, and the previous studies evaluating and examining the various alternatives. Finally, we evaluate each alternatives by the criteria. 차세대네트워크(BCN, 4G)의 등장으로 융합하의 상호접속에 대한 제도정립이 요구되고 있다. 전통적인 상호접속제도는 시간을 기반으로 통화량에 따라 부과되는 접속료를 통해 확립되었으나, 이는 IP기반 서비스에 대해서는 적합하지 않다. 따라서 융합환경하에서는 망의 형태와 무관하게 다른 사업자의 망을 어떠한 형태로도 상호접속할수 있는 보편적 상호접속에 대한 보장을 확보하는 것이 중요하다. 본 연구에서는 NGN 환경에 적합한 상호접속제도의 평가기준을 마련하고 이 기준에 따라 다양한 상호접속 모형을 평가한다. 구체적으로는 효율적인 상호접속료 조건, 소매요금 및 접속료 결정모형, 그리고 상호접속료 모형 대안을 평가하고 분석한 기존 연구들을 바탕으로 상호접속료 산정모형을 평가할 대안을 도출하고 이 대안을 평가할 평가기준을 도출할 것이다. 그리고 마지막으로 각 기준에 따라 각 대안들을 평가할 것이다.

규제정책의 변화가 고도 통신망 투자유인에 미치는 영향분석

정충영,정송민,Jung,,Choong-Young,Jung,,Song-Min 한국정보통신학회 2011 한국정보통신학회논문지 Vol.15 No.7

이 논문은 통신서비스의 규제정책이 역무통합이라는 규제정책의 변화와 함께 과거의 수직적 규제에서 수평적 규제체제로 바뀜에 따라 기존의 개별규제체제가 어떠한 형태로 변할 것이며, 이에 따라 통신망 투자에 어떠한 영향을 미칠 것인가를 분석한다. 역무통합은 진입규제와 행위규제를 분리하여 진입의 제약을 축소하고 행위규제의 유연성을 제고하는 효과를 가진다고 볼 수 있다. 따라서 역무통합 자체가 주는 직접적 효과보다는 상호접속 규제, 설비제공제도, 요금규제, 결합판매, VoIP 번호 이용 등 역무통합과 연계된 행위규제 개선을 통해 간접적으로 시장 파급효과가 나타날 것으로 예상된다. 본 논문에서는 먼저 기업수준에서 투자의사결정에 영향을 미치는 요소들에 대해 논의하고, 진입규제 완화, 상호접속, 요금규제, 망중립성 등의 개별규제가 투자결정에 미치는 영향경로를 분석한다. 마지막으로 정책에 대한 기본적인 가이드라인을 제안한다. This paper analyzes the impact of the change in telecommunication regulation on network investment such as the integration of telecommunication service. The integration of telecommunication service plays a role of separating the behavior regulation from entrance regulation and reducing a entrance constraints. Therefore, it is expected that the market spill over effect is high through the improvement of behavior regulation such as interconnection regulation, facilities provisions, retail price regulation, bundling, number portability of VoIP. This paper discusses the critical factor affecting the decision making process in respect of the firm level and analyzes the impact path guiding investment and innovation. Finally, the paper proposes the guideline for telecommunications policy.