• Journal of Institute of Control, Robotics and Systems
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• v.12 no.9
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• pp.926-934
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• 2006

This paper proposes intelligent control of a virtual walking machine that can generate infinite floor for various surfaces and can provide proprioceptive feedback of walking to a user. This machine allows users to participate in a life-like walking experience in virtual environments with various terrains. The controller of the machine is implemented hierarchically, at low-level for robust actuator control, at mid-level fur platform control to compensate the external forces by foot contact, and at high-level control for generating walking trajectory. The high level controller is suggested to generate continuous walking on an infinite floor for various terrains. For the high level control, each independent platform follows a man foot during the swing phase, while the other platform moves back during single stance phase. During double limb support, two platforms manipulate neutral positions to compensate the offset errors generated by velocity changes. This control can, therefore, satisfy natural walking conditions in any direction. Transition phase between the swing and the stance phases is detected by using simple switch sensor system, while human foot motions are sensed by careful calibration with a magnetic motion tracker attached to the shoe. Experimental results of walking simulations at level ground, slope, and stairs, show that with the proposed machine, a general person can walk naturally on various terrains with safety and without any considerable disturbances. This interface can be applied to various areas such as VR navigations, rehabilitation, and gait analysis.

• Journal of Digital Convergence
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• v.11 no.9
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• pp.159-166
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• 2013

In this paper, make a study decision problem called an optimal release policies after testing a software system in development phase and transfer it to the user. When correcting or modifying the software, finite failure non-homogeneous Poisson process model, presented and propose release policies of the life distribution, half-logistic property model which used to an area of reliability because of various shape and scale parameter. In this paper, discuss optimal software release policies which minimize a total average software cost of development and maintenance under the constraint of satisfying a software reliability requirement. In a numerical example, the parameters estimation using maximum likelihood estimation of failure time data, make out estimating software optimal release time. Software release time is used as prior information, potential security damages should be reduced.

• Journal of the Korean Society for Library and Information Science
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• v.41 no.3
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• pp.145-164
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• 2007

They say the 21 Century is the culture-centered age. As the income is increased. the concern about human culture will cause the elevation of life quality and the growth of culture needs. For that reason library service to meet their user's need for culture will be needed. The purpose of this study is to improve the university library service to suggest the solution for successful developmental strategy on cultural program of university library with the positive approach of analysis and evaluation. For specific instance, the cultural services of S women's university library was analyzed and evaluated. The point of the evaluation are five aspects: 1) the recognition of the users for the overall cultural services 2) the satisfaction index for the contents(topics) of the cultural services 3) the satisfaction index for the way of managing 4) the participation index of users. As the result of the analysis, the specific solution for the strategy of university library's cultural services for the future would be suggested.

• Journal of Fashion Business
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• v.17 no.4
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• pp.149-163
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• 2013

This study investigated the effects of smart phone usage motives and fashion brand app factors upon the intention to accept fashion brand applications. Data were collected from 250 female college students living in Seoul and Gyeonggi-do. 220 reliable data were analyzed by frequency, factor analysis, Cronbach's alpha, ANOVA,, Duncan test, paired t-test, chi-square analysis, regression. The results were as follows: Firstly, the 'information acquisition' and the'use of time' were considered to be the most important motive factors driving consumer's smart phone usage. Secondly, the motives underpinning smart phone user's intention to accept a fashion brand application were 'social relationships', 'entertainment', and 'information acquisition'. Thirdly, the frequently used factors during the usage of fashion brand application could be classified in order of frequency as follows: 'product information provision', 'store information provision', 'coordinated information provision', 'fashion information provision', 'entertainment provision', 'hobbies and life information provision', virtual wearing provision', 'SNS provision', and, 'events and coupons provision'. Fourthly, a factor analysis of these nine factors were classified into 'basic information type', and 'additional information type'. The influences of basic information type and the additional information type upon the intention to accept the fashion brand application showed the following significant result: The basic information type had a greater influence upon the intention to accept the fashion brand app.

• Journal of Families and Better Life
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• v.30 no.5
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• pp.1-15
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• 2012

The purpose of this study is various discussion and alternatives focusing on integration of center for enhancing family policy delivery system and family support service the long term. The subject is managers who work at Healthy Family Support centers and Multicultural Family Centers. And they are responded non-structural questionnaire. The results were follows: First, 82.4% respondents of healthy support center and 50% respondents were in favor of integration. Second, reason of integration are conformance for social integration, the efficiency of center operations, the adequacy of program for various family, doing program with the goal of both centers of the similarity, complementary, and user convenience, prevent duplication and missing of services and so on, If the amount charged against the project of the center dissimilarity of institutions, including the operating direction was different. Third, the Center for the meaning of integration are name, organization, reorganization or consolidation of functions, was regarded as entrusted to corporate consolidation. Fourth, the consolidation that occurs during problem solving to ensure the succession of budgeting and human resources and program alternative for dressing up, commissioning center was the difference as problem solving.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.31 no.2
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• pp.71-97
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• 2020

This study investigated and analyzed the degree to which the '3rd Library Comprehensive Development Plan' established in Korea is related to the UN SDGs agenda, including whether the library does business or services related to the UN agenda. As a result, first, IFLA welcomed the UN 2030 Agenda by supporting the UN 2030 Agenda, that is, by presenting the library's specific implementation strategy to achieve the 17 goals of the SDGs. Second, all 14 Core tasks of the '3rd Comprehensive Library Development Plan' were found to be closely related to UN SDGs. Among them, it was analyzed that the convenience of access to user information, including the linkage of library information services, and the strengthening of library services tailored to the life cycle were most strongly related to this agenda. The results of this study are expected to help the community, government, local governments, and the public to appreciate the social contribution and value of the library.

• Journal of Environmental Science International
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• v.27 no.7
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• pp.519-529
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• 2018

With rapid economic growth, the urban environment has created a problem of human physical and mental illness. In order to solve these problems, urban forests have emerged as a way to mitigate the environmental risks through improving the polluted environment of the city and improve the quality of life. As the urban forests have expanded, the school forests movement has also been taking an important place recently. The study focused on the performance of school forests by comparing the perceptions among teachers and students about their functions. The questionnaire was composed of 4 questions concerning human matters, 10 questions for space recognition, 4 questions for thermal environment, 2 questions for health promotion, and 20 total questions for composition of survey items. The reliability of the school forest function, number of tree planting areas and quantities, the harmony of the planting, and the satisfaction of the school forest were analyzed in the questionnaire conducted by the school members. Although it does not recognize school forests, it has a positive response to the green space that is built outdoors. It is considered that outdoor education and environmental education are sufficient in school forests and green spaces. The results showed that the outdoor green space was more satisfactory when compared with the general school. Teachers and students' preferences were similar to 'seasonal changes' and' trees of various colors and shapes'. The reliability analysis between each item shows that the coefficient for cronbach's ${\alpha}$ was .700 to .834. The purpose of this study is to identify the perception of forest function among school forest members and to utilize them as a basic data in the future.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.4B
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• pp.354-361
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• 2011

Increasing interest and technological advances in smart home has led to active research on context-awareness service and prediction algorithms such as Bayesian Networks, Tree-Dimensional Structures and Genetic prediction algorithms. Context-awareness service presents that providing automatic customized service regarding individual user's pattern surely helps users improve the quality of life. However, it is difficult to implement context-awareness service because the problems are that handling coincidence with context information and exceptional cases have to consider. To overcome this problem, we proposes an Intelligent Sequential Matching Algorithm(ISMA), models context-awareness service using Timed Petri-net(TPN) which is petri-net to have time factor. The example scenario illustrates the effectiveness of the Timed Petri-net model and our proposed algorithm improves average 4~6% than traditional in the accuracy and reliability of prediction.

• Journal of the Korean Home Economics Association
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• v.29 no.4
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• pp.45-64
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• 1991

Each of us has personal and unique "Mental Images" of environment that are the results of a two-way process between an observer and his environment. By understanding of people's image on their physical settings through cognitive maps, congruent with their design environment. In this context, this study is to fine out the characteristics of the resident's image in apartment housing that are modern housing. This paper is theoretically based on Appleyard's cognitive maps types, Lynch's the components of image, Harrison and Howard's image enhancing factors and Applyard's image enhancing factors of buildings. For the purpose of this study, two-instruments were used. One was sketch mapping, that told of visual aspects of cognitive map. Another was verbal questionnaire, which was composed of nonvisual aspects of image components and image enhancing factors. For the methods of research analysis, Percentage, Frequency, and Chi-square test were used. The results of this study are as follows. Firstly, as for the types of cognitive maps, the rate of sequential maps and spatial maps are nearly same. Secondly, as for the components of images, landmarks and districts are significant elements in apartment housing, and edges, nodes and paths are rare element. Thirdly, with regard to image enhancing factors, landscaping is shown to be most effective at landmarks and districts. And finally, in examing the differences of images between various social groups, significant variables are years of living and housing size. Age and income are the next. In this study of image, we can learn about manner in which individuals come to see, understand, and cope with the environment at a personal level. So, user-oriented approach is useful in environmental design, and particularly, it is useful in the apartment housing of the future life space.

• Journal of Korea Game Society
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• v.18 no.5
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• pp.31-46
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• 2018

Physically interactive sport games are emerging as a solution to increase the physical activity of children in urban life. Existing studies on physically interactive sport games have been conducted with adults, while studies on children are insufficient. The elements of physically interactive sport games for children are derived from the common elements of physically interactive sport games and design for children. The derived elements are applied to actual game item to design a game for children. In this study, the elements of physically interactive sport games for children were applied to children's screen climbing games, and games could be identify improvements through user evaluation. It is expected games to take into consideration more children's characteristics can be designed by utilizing the elements of physically interactive sport games for children.