• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.8
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• pp.3602-3610
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• 2013

The risk of failure in the development of modern weapon systems has been increasing as the demand on the capability and the resulting complexity of the weapons on the war fields are increasing drastically. The analysis of failure has indicated that the main causes can be the following: one is attributed to the unsatisfaction of the system operation concept; and the other is the use of premature technology. As such, DAPA in Korea is urging that the weapons systems development should meet the required operational capability (ROC) as a critical performance requirement. On the other hand, an approach to risk management is to use the technology readiness level (TRL) assessed for each individual technology alone. However, the method of TRL cannot assess the effect of integration between technologies and cannot be performed at system level, which is crucial to systems development. In order to improve the shortfalls, a concept of system readiness level (SRL) has been studied by introducing the technologies integration and also some forms of analysis of advanced degree of difficulty studied separately, but no model considering both of two reported yet. In this paper, under the framework of meeting the ROC, an improved SRL assessment model is presented, which is also considering the advanced degree of difficulty simultaneously. The application of the improved assessment method is discussed in connection with the life cycle of the weapon systems development in conformance with the ROC of DAPA.

• Journal of Information Technology and Architecture
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• v.10 no.3
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• pp.335-346
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• 2013

With the overwhelming development of information technologies, the need for software development that can deal with diversified and complex business processes has increased dramatically. As a result, companies prefer softwares that can handle far more complex processing ability and also it should be stable as well as easier to maintain. These ambivalent requirements keep the software development organizations from assessing the quantitative abilities, so that under the support of the U.S. Department of Defense the Capability Maturity Model (CMM) and Capability Maturity Model Integration (CMMI) have been developed. The CMMI upper levels for the software development companies will be evaluated to be excellent and authenticated, which drives the companies to get and maintain high levels of maturity. In this paper, a case study for a domestic software company has been exploited how to achieve CMMI level 4 and what kind of factors have been played an effective role. These issues at the domestic and international software and maintenance program, can influence the trustworthiness and marketing effects for the global market. In this paper, the company's actual case study will give clues to find out the important factors for the development and maintenance of software companies maturity levels.

• Korean Journal of Remote Sensing
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• v.29 no.1
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• pp.69-79
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• 2013

This paper presents a two-stage geostatistical integration approach that aims at downscaling of coarse scale remote sensing data. First, downscaling of the coarse scale sedoncary data is implemented using area-to-point kriging, and this result will be used as trend components on the next integration stage. Then simple kriging with local varying means that integrates sparse precise observation data with the downscaled data is applied to generate thematic information at a finer scale. The presented approach can not only account for the statistical relationships between precise observation and secondary data acquired at the different scales, but also to calibrate the errors in the secondary data through the integration with precise observation data. An experiment for precipitation mapping with weather station data and TRMM (Tropical Rainfall Measuring Mission) data acquired at a coarse scale is carried out to illustrate the applicability of the presented approach. From the experiment, the geostatistical downscaling approach applied in this paper could generate detailed thematic information at various finer target scales that reproduced the original TRMM precipitation values when upscaled. And the integration of the downscaled secondary information with precise observation data showed better prediction capability than that of a conventional univariate kriging algorithm. Thus, it is expected that the presented approach would be effectively used for downscaling of coarse scale data with various data acquired at different scales.

• Proceedings of the Korea Society of Information Technology Applications Conference
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• 2002.11a
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• pp.178-198
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• 2002

1980년대 초기 미 국방성에서는 소프트웨어 개발업체의 소프트웨어 개발능력에 대한 판단 착오로 금전적, 시간적, 성능상의 많은 어려움을 겪어왔다. 따라서 미 국방성은 카네기 멜론 대학의 SEI(Software Engineering Institute)를 통하여 소프트웨어 개발능력을 측정하고, 조직의 소프트웨어 프로세스 성숙수준을 결정하기 위한 CMM(Capability Maturity Model)을 개발하였다. 그러나 CMM에 기반을 둔 소프트웨어 프로세스 평가 방법은 외부 전문가를 이용하여 평가하므로, 시간과 비용이 많이 소모되는 방법이다. 따라서 많은 기업에서 이러한 평가를 수행하는데 어려움을 느끼고 있다. 특히, 중ㆍ소규모의 조직에서 사용하기에는, CMM의 평가방법은 너무 복잡하고 추상적이다. 소규모 기업의 경우에 3년여에 걸친 프로세스 향상노력으로 많은 성과가 이루어 졌음에도 불구하고 CMM의 평가방법을 이용한 결과는 1 단계 수준을 벗어나지 못하였다는 사례들이 많이 발표되고 있다. 이러한 결과들은 CMM의 평가 방법은 중소 규모 조직에는 적절치 않다는 것을 입증한다. 따라서 중소 규모 기업이나 조직의 소프트웨어 프로세스의 성숙도 평가와 개선을 위한 모델들을 개발하기 위한 노력이 전 세계적으로 광범위하게 펼쳐지고 있다. 본 연구에서는 최근의 모델인 CMMI(Capability Maturity Model Integration)의 소프트웨어 프로세스 영역 분류에 의거해서, 우리나라의 소프트웨어의 개발과 취득에 관련된 조직들이 각 프로세스 영역을 얼마나 중요하게 평가하는지, 그리고 해당 영역에서의 기준, 절차 그리고 방법을 문서화시키는 것을 얼마나 중요하게 평가하는지를 조사하였다. 한국의 소프트웨어 개발 관행은 CMM이나 ISO Is504 등에서 바람직한 것으로 제시하고 있는 국제 표준과는 많이 다르며, 나아가서는 예를 들어, 미국의 일반적인 관행과도 많이 다를 수 있다. 따라서 미국이나 유럽의 대규모 소프트웨어 조직을 위해서 개발된 CMM이나 ISO 15504 등은 우리나라의 중소 규모 소프트웨어 조직에는 특히 부적절할 수 있다 본 연구에서는 우리나라 소프트웨어 조직의 종류, 조직의 규모, 그리고 프로젝트 수행 규모에 따라서 각 소프트웨어 프로세스 영역의 중요도가 어떻게 다른지, 그리고 해당 소프트웨어 프로세스 영역의 기준, 절차 그리고 방법을 문서화시킬 필요성이 어떻게 변하는가를 조사하였다. 본 연구 결과는 우리나라의 소프트웨어 조직들이 프로세스 개선을 위해서 무엇을 정말로 필요로 하는지를 밝힘으로써, 한국 소프트웨어 산업의 현실적인 특수성을 고려한 소프트웨어 프로세스 평가와 개선 모델의 개발을 위한 기초적인 자료를 제공할 것으로 예상된다 또한, 본 연구 결과는, 우리나라 소프트웨어 조직들이 실제로 무엇을 필요로 하는지를 밝힘으로써, 우리나라의 소프트웨어 산업을 육성하기 위한 실효성 있는 정책 입안을 위한 기초 자료를 제공할 것으로 예상된다.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.49 no.4
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• pp.9-15
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• 2012

With the rise of internet and e-commerce, this is more applicable now than ever. People rely on computer networks to provide them with news, stock prices, e-mail and online shopping. People's credit card details, medical records and other personal information are stored on computer systems. Many companies have a web presence as an essential part of their business. The research community uses computer systems to undertake research and to disseminate findings. The integrity and availability of all these systems have to be protected against a number of threats. Amateur hackers, rival corporations, terrorists and even foreign governments have the motive and capability to carry out sophisticated attacks against computer systems. Therefore, the field of information and communication security has become vitally important to the safety and economic well being of society as a whole. This paper provides an overview of IDS and IPS, their functions, detection and analysis techniques. It also presents comparison of security capability and characteristics of IDPS techniques. This will make basis of IDPS(Intrusion Detection and Protection System) technology integration for a broad-based IDPS solutions

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2002.11a
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• pp.178-198
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• 2002

1980년대 초기 미 국방성에서는 소프트웨어 개발업체의 소프트웨어 개발능력에 대한 판단 착오로 금전적, 시간적, 성능상의 많은 어려움을 겪어왔다. 따라서 미 국방성은 카네기 멜론 대학의 SEI(Software Engineering Institute)를 통하여 소프트웨어 개발능력을 측정하고, 조직의 소프트웨어 프로세스 성숙수준을 결정하기 위한 CMM(Capability Maturity Model)을 개발하였다. 그러나 CMM에 기반을 둔 소프트웨어 프로세스 평가 방법은 외부 전문가를 이용하여 평가하므로, 시간과 비용이 많이 소모되는 방법이다. 따라서 많은 기업에서 이러한 평가를 수행하는데 어려움을 느끼고 있다. 특히, 중ㆍ소규모의 조직에서 사용하기에는, CMM의 평가방법은 너무 복잡하고 추상적이다. 소규모 기업의 경우에 3년여에 걸친 프로세스 향상노력으로 많은 성과가 이루어 졌음에도 불구하고 CMM의 평가방법을 이용한 결과는 1 단계 수준을 벗어나지 못하였다는 사례들이 많이 발표되고 있다 이러한 결과들은 CMM의 평가 방법은 중소 규모 조직에는 적절치 않다는 것을 입증한다. 따라서 중소 규모 기업이나 조직의 소프트웨어 프로세스의 성숙도 평가와 개선을 위한 모델들을 개발하기 위한 노력이 전 세계적으로 광범위하게 펼쳐지고 있다. 본 연구에서는 최근의 모델인 CMMI(Capability Maturity Model Integration)의 소프트웨어 프로세스 영역 분류에 의거해서, 우리나라의 소프트41어의 개발과 취득에 관련된 조직들이 각 프로세스 영역을 얼마나 중요하게 평가하는지, 그리고 해당 영역에서의 기준, 절차 그리고 방법을 문서화시키는 것을 얼마나 중요하게 평가하는지를 조사하였다. 한국의 소프트웨어 개발 관행은 CMM이나 ISO 15504 등에서 바람직한 것으로 제시하고 있는 국제 표준과는 많이 다르며, 나아가서는, 예를 들어, 미국의 일반적인 관행과도 많이 다를 수 있다. 따라서 미국이나 유럽의 대규모 소프트웨어 조직을 위해서 개발된 CMM이나 ISO 15504 등은 우리나라의 중소 규모 소프트웨어 조직에는 특히 부적절할 수 있다 본 연구에서는 우리나라 소프트웨어 조직의 종류, 조직의 규모, 그리고 프로젝트 수행 규모에 따라서 각 소프트웨어 프로세스 영역의 중요도가 어떻게 다른지, 그리고 해당 소프트웨어 프로세스 영역의 기준, 절차 그리고 방법을 문서화시킬 필요성이 어떻게 변하는가를 조사하였다. 본 연구 결과는 우리나라의 소프트웨어 조직들이 프로세스 개선을 위해서 무엇을 정말로 필요로 하는지를 밝힘으로써, 한국 소프트웨어 산업의 현실적인 특수성을 고려한 소프트웨어 프로세스 평가와 개선 모델의 개발을 위한 기초적인 자료를 제공할 것으로 예상된다. 또한, 본 연구 결과는, 우리나라 소프트웨어 조직들이 실제로 무엇을 필요로 하는지를 밝힘으로써, 우리나라의 소프트웨어 산업을 육성하기 위한 실효성 있는 정책 입안을 위한 기초 자료를 제공할 것으로 예상된다.

• Journal of the Korean Data and Information Science Society
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• v.25 no.4
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• pp.755-767
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• 2014

Recently, many firms have introduced information and communication technology (ICT) into supply chain. However, existing studies have not yet insisted definite conclusion with respect to ICT impact on supply chain. Thus, this study subdivides supply chain performance which previous researchers have studied comprehensively while suggesting perspective of the use of firm's ICT capabilities. We classify ICT capabilities into four types of group and then analyze the difference between groups regarding each factor of supply chain performance by ANOVA analysis and Tukey method. As a result of analysis, the group in which all ICT capabilities are high shows the highest level of integration and flexibility performance among supply chain performances. On the other hand, the group in which all ICT capabilities are low presents the lowest level of integration and flexibility performance. We also provide more precise and specific information with practitioners by analyzing the difference between groups with regard to detailed measurements on integration and flexibility variables.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1996.04a
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• pp.639-643
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• 1996

The manufacturing system has been changed from labored manual process system, which is managed and operated by managers and operators, to CIMS(Computer Integrated Manufacturing System) for integration of manufacturing, research, development and consumption in the age of diverse customer's needs[6]. However, because it involves the hierarchical system composed of many sub-systems interface and its installation & setup cost is very expensive, CIMS has many difficulties in constructing the durable optimal system that is able to adapt to rapid in-outer circumstance change. So, HMS(Holonic Manufacturing System), the new conceptual manufacturing system having the self-problem-solving and self-organization[11], is instructed to solve these difficulties that it has in these days. The system flexibility in the HMS is able to be ensured, with the integration of human's strong points into mechatronics manufacturing system to reduce interference among sub-systems. In this paper, the manufacturing process rationalization and integration of the assembly line in an automobile industry, has lots of problems in efficiency and productivity, has been studied in an early stage of converting the present state of process system to HMS, which is human-oriented processing system, to improve the line efficiency, system productivity and reliability by using human capability effectively. This paper is derived into the human-oriented & object-oriented holons settlement of the shop floor system composed of processing, assembly and material handling system for the future holonic manufacturing system, which is going to be computer supported control system.

• Journal of Mechanical Science and Technology
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• v.20 no.11
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• pp.1863-1872
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• 2006

In FMS (Flexible Manufacturing System) and CIM (Computer Integrated Manufacturing), machine-tools have been the target of integration in the last three decades. The conventional concept of integration is being changed into the autonomous manufacturing device based on the knowledge evolution by applying advanced information technology in which an open architecture controller, high-speed network and internet technology are included. In the advanced environment, the machine-tools is not the target of integration anymore, but has been the key subject of cooperation. In the near future, machine-tools will be more improved in the form of a knowledge-evolutionary intelligent device. The final goal of this study is to develop an intelligent machine having knowledge-evolution capability and a management system based on internet operability. The knowledge-evolutionary intelligent machine-tools is expected to gather knowledge autonomically, by producing knowledge, understanding knowledge, reasoning knowledge, making a new decision, dialoguing with other machines, etc. The concept of the knowledge-evolutionary intelligent machine is originated from the machine control being operated by human experts' sense, dialogue and decision. The structure of knowledge evolution in M2M (Machine to Machine) and the scheme for a dialogue agent among agent-based modules such as a sensory agent, a dialogue agent and an expert system (decision support agent) are presented in this paper, with intent to develop the knowledge-evolutionary machine-tools. The dialogue agent functions as an interface for inter-machine cooperation. To design the dialogue agent module in an M2M environment, FIPA (Foundation of Intelligent Physical Agent) standard platform and the ping agent based on FIPA are analyzed in this study. In addition, the dialogue agent is designed and applied to recommend cutting conditions and thermal error compensation in a tapping machine. The knowledge-evolutionary machine-tools are expected easily implemented on the basis of this study and shows a good assistance to sensory and decision support agents.

• Archives of design research
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• v.14 no.1
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• pp.27-34
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• 2001

In order to design the products that impression or emotional taste influence the purchase, feedback is necessary as useful data for better idea sketches through users emotional evaluation in early stage of design process. On the other hand, it was required to make judgments individually in previous image evaluations for emotional evaluations such as semantic differential method (SD method) that objects have been considered as classified tendency. However those SD methods are not enough to reflect flexible human capability with similarity judgment in object perceptual process. Therefore, this study proposes a classification of stimulus based on intuitive judgment and a hierarchical image evaluation method based on analysis of hierarchical process and fuzzy integration. The evaluation will be conducted through the order of process, intuitive classification of objective stimulus and items, definition of representatives in each class. Evaluation for each image of the stimulus, calculation of prior raking based on fuzzy integration. The evaluation supportive software is developed to conduct this evaluation process under interactive environments.