• 한국IT서비스학회지
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• 제9권4호
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• pp.135-150
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• 2010

In the age of digital convergence, it is expected that quality of life of human beings can be improved by converged devices and services. Researches concerning change of buying patterns and consumer behaviors in these contexts have to be progressed actively. To investigate future trend of consumer behaviors, we used focus group interview for Qualitative approach in the first step and then conducted questionnaire survey for experts in order to get validity and feasibility of research results. As result of research we suggested eight propositions by FGI for 20s target consumers. Additionally, on the basis of qualitative research, by questionnaire survey for 22 experts two perspectives of positive and negative views In future trends were proposed. Results can give lots of Implications and research motivations to academia, practices and workers in public policies who have interests in change of consumer behaviors, thinking styles, and life style under digital convergent environment.

• 통상정보연구
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• 제8권3호
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• pp.323-341
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• 2006

The world industry structure is characterized as service economics concerned with key words of global, information and culture. Developed countries have expanded a value-added of service economics along with rapid growth of service economics. In this change of economic environment in the world, China have converted their strategy of an economic management into coping with the industrial structure of service in the 11th 5-year plan. The purpose of the paper, therefore, is to find out the new commerce strategy of China, and searching for the counter plan of Korea. Chapter 2 begins with the change of economic strategy in China and their cultural factors using service industry. Chapter3 deals with, from the basis of chapter 2, China's service export strategy to abroad and our counter plan that is able to export and expand Korean service and culture industry into China.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1221-1226
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• 2008

Present, the cooling method of using a phase-change heat transfer such as immersed type, heat pipe etc is applied in cooling of high-capacity power semiconductors of the main power system for the high speed train with the concentrated traction. In order to apply these phase-change cooling system to the high speed EMU to be developed, needed are technological researches of consideration of installing space, air passage, light weight material and miniaturization. Although this research establishes design specifications through theoretical analysis and computational analysis from the basic design process of the cooling system of the propulsion system for the high-speed EMU, when details design is completed, present improvement subject and optimum design before manufacturing the prototype of the cooling system on the basis of analysis results. And then, carried out will be the performance tests through prototype manufacture and reliability estimation by components of cooling system.

• 한국조경학회지
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• 제20권4호
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• pp.76-92
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• 1993

This paper is to propose an interpretation method of urban landscapes in Korea, which are formed and transformed in the course of modernization. As the theoretical basis, an extensive study is done to define the concepts of urban landscape; townscape in the architectonic terms, urban landscape in the cultural-geographical terms, and urban landscape in the landscape ecology are those scrutinized. As for the interpretation method, the landscape process that encompasses the spatio-temporal transformation, the causes and effects of morphogenesis, the contents and forms of landscape change are studied. The emphasis is placed on the reasons and process of the cultural change from the original landscapes toward the contemporary landscapes in the rapidly urbanizing area. With these basic concepts and interpretation method, an on-site case study of 'Inchon' that has been changed drastically since the late 19th century is done, of which results will be reported in the following article(II).

• 한국주거학회:학술대회논문집
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• 한국주거학회 1994년도 학술발표대회논문집 상
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• pp.57-63
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• 1994

The purpose of this study is to examine how Korean changed and applied the railway official residence space constructed by the Japanese, when they occupied these railway official residence space after liberation from Japan, and specify the relationship between the life culture and residence space by analysing the differance in important life style, as well as element of change in important residence spaces according to modernization. In addition, this study was carried out by means of research on the form and pattern, visual anthropological method by photograph and direct observation.The result of this study is summarized as fellows. The residence space at Kyounaju constructed by the Japanese on the basis of the culture has been changed and applied to the life style of the Korean when the Korean occupied these Japanese style residence space.Then, it seems that the change of the Japanese style residence was caused by both differance in the life pattern between Korea and Japan, and the medernization of the life.

• 전자공학회논문지A
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• 제32A권3호
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• pp.411-417
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• 1995

Packet switching is an important aspect of ISDN. In the TDX-10 switching system, which is being developed as an ISDN exchange in Korea, the packet switching function is implemented on the basis of Case B scenario of X.31. After implementing the packet switching function the performance test must be executed to check whether the design objectives of performance are satisfied or not. However, it is not easy to set up test environment for performance measurement under full load conditions. This paper presents the design of the traffic generator which enables us to do performance test of the TDX-10 packet handler under full load conditions. To generate packet traffic we change only software programs without any change of the hardware system of the packet handler.

• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 2008년도 춘계학술논문발표회 논문집
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• pp.155-158
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• 2008

In this study we compared corrosion resistance tests which were carried out according to the national technique standard and the UL standard to ensure the reliability of smoke detectors in foul weather. The sensitivity of smoke detectors became so blunt that the least operational smoke concentration was a maximum change of 13% in the national technique standard, while it was a maximum change of 145% in the UL standard. As a result of this study the test method of corrosion resistance was made an objective evaluation in the national technique standard. Therefore it could be said that a basis of developing the test method of corrosion resistance was prepared for our country.

• 한국실내디자인학회논문집
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• 제21호
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• pp.173-181
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• 1999

Design has been proceeding to 21 century undertaking the many-sided and complicated characteristics of the modern industrialized society much more heavily comparing to past. The rapid change of technology and media of communication faces the new concept of relationship between users and environment, and newly developed material leads designers to change the way of building concept and the process of designing. Especially the important points of user-friendly and environment-friendly approaching for designing influences over choosing, controlling meterials and forming the structure and shape organically, or simply. From the tendency of chairs designed in 1990s the very adaptable new material shows both the unlimited possibility for new design is in the turn of this century, but also it can be analogized that 'the design which can make users think' will be the philosophical basis for future desigv.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 춘계학술대회 논문집
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• pp.351-357
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• 2007

The transition zone between railway embankment and structures, or different track types is known to be an area in which problems often arise and where extra care needs to be taken with maintenance. Differences in track stiffness have dynamic effects and these increase the force in the track and the extent of deformation. In this study, the criteria for the change ratio of track stiffness along transition area, and proper transition length are presented through train/track interaction analyses. Those are derived on the basis of permissible limitations of train and track performances such as rail stress, uplift force of fastener, reduction of dynamic wheel force, and acceleration of car body. A feasible method of evaluation of track stiffness which is necessary when a designer reviews whether the criteria are satisfied or not is also presented.

• 융합신호처리학회 학술대회논문집
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• 한국신호처리시스템학회 2000년도 하계종합학술대회논문집
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• pp.65-68
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• 2000

In this paper, as a compatible software radio transmission system, Digital-Radio conversion system which can directly change the digital signal generated by the logic circuit into radio signal is proposed. By the vector synthesis method, the digital signals can change directly into radio signal. If such a circuit is realized, RF circuit and an antenna can be composed by the simple one device, and the radio is directly controlled and performed by the software processing which is the essence of software radio. This Digital-Radio conversion system of this paper give many number of communication channels being offered by PN code and offer a hardware design flexibility by digitization, therefore it decrease the percentage ratio of hardware of system and give a more flexible function of software basis. In this paper, this proposed Digital-Radio conversion system is called D/R converter, and the principle of this D/R converter, radio signal generation algorithm is explained and the performance characteristics of proposed algorithm is shown in time base by the computer simulation method.