• 한국멀티미디어학회논문지
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• 제14권6호
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• pp.766-774
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• 2011

본 연구에서는 소프트웨어의 테스팅 과정을 통해서 발견된 결함을 품질 특성별로 분석하여 테스트케이스를 만들 경우 소프트웨어 테스팅의 기초 자료로 활용할 수 있도록 제시한다. 소프트웨어 테스팅 과정에서 발견된 결항은 기능성, 사용성, 신뢰성, 효율성, 유지보수성, 이식성 결함으로 시험 과정을 통해서 발견된 결함을 각 제품별 특색에 따라서 6개의 품질 특성별 결함으로 구분하였다. 소프트웨어 제품별로 발견된 결함을 분석하여 공통적인 결함의 요인을 찾고 본 연구를 위해서 사용된 결함리포트의 결함수를 조사하여 각 품질 특성별로 결함수에 대한 상대적 비교를 통해서 가중치를 적용할 수 있는 방안을 검토하였다.

• 한국정보통신학회논문지
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• 제7권4호
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• pp.750-757
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• 2003

현재 XML응용 분야 가운데 XML 표준 데이터를 이용하여 정보의 교환 및 변환을 하여 시스템의 이식성과 확장성을 증대시키고자 하는 연구가 활발하게 이루어지고 있다. 본 논문은 클라이언트와 서버사이에서 비호환성과 확장에 따른 개발비용 문제를 해결하기 위해 클라이언트와 서버사이에 XML 중간계층을 이용한 시스템 설계를 제시한다. 이 방법은 클라이언트와 서버사이의 프로그램 개발시 중간 조정 역할을 하며, 이질적인 환경에서의 이식성과 시스템의 확장성을 증대시킨다. 본 논문은 XML 기반 DB를 이용하여 전자상거래를 위한 XML 데이터 처리 시스템을 설계 및 구현하였다. 기대효과로는 XML 기반의 전자상거래 구조를 활용함으로서 시스템 확장성과 시스템의 유지보수를 위한 비용절감이 기대된다.

• 복식
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• 제59권3호
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• pp.27-41
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• 2009

Interpreting the phenomenon of Fast fashion that is prevalent these days, this research is meaningful in that it prepares the frame which suggests the vision to read the trend of 2000s and analyzes the property of phenomenon of Fast Fashion in the connection with society and culture. The so[io-cultural property can be largely characterized by consumption orientation, change orientation, efficiency, moment and multiculturism. Analyzing the phenomenon of fast fashion that emerged after 2000 on the basis of such sociocultural background, it is largely classified into imitation, fashionability, disposability, portability, transformation and convergence. Due to the hi-polarization of consumption, people tend to select imitated goods, and people accustomed to speed get interested in the fashionability of all Phenomena. Further, society that is transient and changing rapidly makes the habit of purchasing in disposability. The property of nomad society encourages to keep the habit of portability. Such change-oriented society and rapidly changing life pattern make them adapt in diverse transformation modes of Fast Fashion. Further, multi-cultural world integrates enterprises through combination of all cultures and the convergence of all factors.

• 경영과학
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• 제25권2호
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• pp.57-71
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• 2008

We study factors that affect consumers' switching behaviors among service providers in Korean mobile telecommunications service market. For empirical analysis, quarterly time series data from the first quarter of 2004 through the second quarter of 2007 were used. We chose the number of switchers to each mobile service provider in each quarter as dependent variables. Independent variables include acquisition costs per subscriber, which play the role of subsidy to mobile handset, switching costs, time trend, structural change effect, and waiting demand effects. Through the empirical analysis, we found that each provider's churn-in customers are affected by different factors. Specifically, the number of churn-in customers into SK Telecom is explained mainly by SK Telecom's customer acquisition costs and waiting demand from KTF, while the number of customers switching into KTF is better explained by switching costs from the previous service provider and waiting demand from SK Telecom. Those who chose LG Telecom as their new provider, on the other hand, were mainly attracted by LG Telecom's high subscriber acquisition cost.

• 한국IT서비스학회지
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• 제8권2호
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• pp.229-245
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• 2009

The Korean mobile telecommunication service market is faced with a tremendous competitive period, in which the market is entering into the maturity stage with launching of the 3rd generation service and with introduction of mobile number portability. In general, it is more important to sustain the old customers than to attracting new customers, as the life cycle of an industry is entering the maturity stage in which the growth rate of new customers is decreasing gradually or becoming stagnant. Thus, mobile telecommunication business has to seek a way to maintain the existing customers instead of promoting new customers. So this study investigates whether the service quality of mobile telecommunication could have effects on the switching barrier of the industry. In order to test the hypothesis on the effects of service quality of mobile telecommunication in Korea on switching barrier, this study collected the questionnaire response data of students including middle and high school students and undergraduates, who are regarded as the major customers in that mobile telecommunication industry.

• 제어로봇시스템학회논문지
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• 제16권6호
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• pp.559-565
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• 2010

In this paper, we present a transformation method of source code from a POSIX (Portable Operating System Interface) based source code into an OSEK/VDX (Offene Systeme und deren Schnittstellen fur die Elektronik in Kraftfahrzeugen/Vehicle Distributed eXecutive) source code. As the electronic parts of automobile systems increase, the use of embedded software in automobile systems is also growing. Accordingly, many electronic systems are designed in automobile system with OSEK/VDX. Otherwise, one of the major problems of embedded software would be portability to other OS's. To enhance the portability and interoperability of embedded software, we propose a source code transformation method from POSIX to OSEK/VDX based on API (Application Programming Interface) translation method. Considering the characteristics of the OSEK/VDX which uses OIL (OSEK/VDX Implementation Language) standard, transformation process is performed with source code transformation and OIL code generation. For the validity of the proposed method, the transformation experiment is given using Micro-C OS II and OSEK/VDX with XC167CI micro-controller.

• 복식
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• 제56권8호
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• pp.45-59
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• 2006

The change into the information society converts people's daily lift into nomadic lifestyle, and this change of lifestyle needs to reinforce the portability in fashion. The purpose of this study is to know the historical diversion of the rallying system, characteristics and reason of this change after recognizing of the implication of fashion and portable methods. The carrying system from the primitive age to modern society was changed from use of body to designing potable equipments - belts, wrapping cloths, bags, pockets, etc. These are changed by modifying of the form of society and fashion. This change result from the development of technique, the entry of women in public affair, the change of life style, the impoverishment of nature. The carrying system of modern fashion means not only the spares in the clothing, but also a new attached system in which nomadic necessities are transformed or unified. The carrying system becomes one of the important details which designers cannot neglect in designing, and must be. developed with consideration of use and function.

• 재활복지공학회논문지
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• 제9권1호
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• pp.1-9
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• 2015

국외의 재활보조기기 추세를 분석하였다. 접어지는 기능이 강화되고, 기존의 동력이 없는 장치에 전동구동 보조모듈이 추가되고, 전반적인 보조기기의 완성도가 향상되고 있다. 특히, 접어지는 기능을 포함한 휴대 및 보관하기 용이한 이동 보조기기가 증가하고 있다. 동력 보조 휠 및 상지보조 모듈이 시장에 진입하고 있다. 상대적으로 성숙된 최신기술을 적용한 신개념의 휠체어가 시장이 나오고 있다. 최신 로봇기술을 응용한 하지 외골격 로봇이 경쟁체제에 돌입하였다. 기립형 휠체어, 경사로, 간단한 계단 이동보조장치가 보편화 되고 있다. 보조기기와 다양한 스마트기기가 결합되고 있다. 이외에도 멋진 디자인, 소재, 가공기술 등에 의한 완성도가 제고 되고 있다.

• 한국생산제조학회지
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• 제26권2호
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• pp.230-237
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• 2017

Various drones have extended application area very fast. In this paper, we define two contradictions in designing a portable-size drone by using TRIZ technique. The first is a physical contradiction between high rigidity and good portability, and the second is a technical contradiction between high stability and good portability. Through TRIZ technique, six design principles, which guide direction for optimal design, were driven. Consequently, an umbrella mechanism and design criteria were proposed for a portable-size drone. Detail design is verified through finite element method. Test results for the portable-size prototype drone show good performance, and prove its usefulness to be equivalent to a general full-size drone.

• EDISON SW 활용 경진대회 논문집
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• 제4회(2015년)
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• pp.467-475
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• 2015

In this paper, the FREECAD 0.14 was used for modeling conventional Selfie-stick and the newly proposed Selfie-stick design. The purpose of this paper is to demonstrate the utility of FREECAD 0.14, which is open-source and still in development for further use. After modeling the conventional Selfie-stick, CatiyaV5 was used to assemble FREECAD 0.14 drawn elements. Main advance in newly designed Selfie-stick is the portability. To improve portability of the Selfie-stick, folding mechanism was adopted from folding LED stands. Several mechanisms were adopted to improve user convenience as well. Ansys 14.0 was used for structural analyses of conventional Selfie-stick model and the newly designed model as well. Several simplifications for the models were needed to process the analyses. When analyzing the newly designed model various materials were used one by one to find compatible composition. Using Aluminum alloys for the stick and the hand grip was found to be compatible. FREECAD was useful for suggestion of the newly designed model but not so much useful to design an actual product. Various efforts would make FREECAD the best choice for industrial use for free as it is named.