• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.05a
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• pp.64-68
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• 2005

The aim of this study is to reconstruct neighborhood public space appropriating for the contemporary society. The rapid development of technology has brought a number of changes to society. People's way of thinking has changed and the requirements about space has become more complex. At the urban neighborhood park, although multiple groups of citizens showed various activities, the program and structure of urban park are too fixed to support their activities. Therefore, strategy and flexible devices are needed to activate and stimulate the multi-user's complex activities. Through the case of Hong-Ik children's park, I will analyze the result of investigation about the pattern of space-user and suggest neighborhood public facilities proper to contemporary situation.

• Journal of Korea Multimedia Society
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• v.8 no.9
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• pp.1258-1268
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• 2005

While the concept of Home Network is laying by and its interests are increasing by means of digitalizing of the information communication infrastructure, many efforts are in progress toward convenient lives. Moreover, as information household appliances which have a junction of connecting to the network are appearing over the past a few years, the demands against intellectual Home Services are increasing. In this paper, by being based upon Multimedia which is an essential factor for developing of various application services on ubiquitous computing environments, we suggest a simplified application model that could apply the information to the automated processing system after studying user's behavior patterns using authentication and access control for identity certification of users. In addition, we compared captured video images in the fixed range by pixel unit through some time and checked disorder of them. And that made safe of user certification as adopting self-developed certification method which was used 'Hash' algorism through salt function of 12 byte. In order to show the usefulness of this proposed model, we did some testing by emulator for control of information after construction for Intellectual Multimedia Server, which ubiquitous network is available on as a scheme so as to check out developed applications. According to experimental results, it is very reasonable to believe that we could extend various multimedia applications in our daily lives.

• KIPS Transactions on Computer and Communication Systems
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• v.4 no.11
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• pp.369-382
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• 2015

Energy aware server clusters aim to reduce power consumption at maximum while keeping QoS(quality of service) compared to energy non-aware server clusters. They adjust the power mode of each server in a fixed or variable time interval to activate only the minimum number of servers needed to handle current user requests. Previous studies on energy aware server cluster put efforts to reduce power consumption or heat dissipation, but they do not consider energy efficiency well. In this paper, we propose an energy efficient cluster management method to improve not only performance per watt but also QoS of the existing server power mode control method based on autonomous learning. Our proposed method is to adjust server power mode based on a hybrid approach of autonomous learning method with multi level thresholds and power consumption prediction method. Autonomous learning method with multi level thresholds is applied under normal load situation whereas power consumption prediction method is applied under abnormal load situation. The decision on whether current load is normal or abnormal depends on the ratio of the number of current user requests over the average number of user requests during recent past few minutes. Also, a dynamic shutdown method is additionally applied to shorten the time delay to make servers off. We performed experiments with a cluster of 16 servers using three different kinds of load patterns. The multi-threshold based learning method with prediction and dynamic shutdown shows the best result in terms of normalized QoS and performance per watt (valid responses). For banking load pattern, real load pattern, and virtual load pattern, the numbers of good response per watt in the proposed method increase by 1.66%, 2.9% and 3.84%, respectively, whereas QoS in the proposed method increase by 0.45%, 1.33% and 8.82%, respectively, compared to those in the existing autonomous learning method with single level threshold.

• The Journal of the Korea Contents Association
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• v.17 no.2
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• pp.96-104
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• 2017

As new smart devices are evolved into the intelligent agent who can reflect user intention and use context, user experience design for easy and convenient usability becomes a core competitive edge. Under the assumption that human centered natural interaction is necessary for the optimal smart TV experience, this study explores the types of voice interaction which are peculiar to TV watching context. In order to build a model for the users to naturally interact with Smart TV, conversation patterns were collected by requesting key features of Smart TV to intelligent agent. Collected sentences were applied to CfA model and classified by responses to activate features. The classified conversation patterns were divided into feature activation and information search. This study has identified that CfC1 occurred when voice interaction between Smart TV and users was vague and CfC2 occurred when the requests were complex or conditional. In conclusion, Simple Request Type is the most efficient model and voice interaction is more appropriate to use to clarify users' vague requests.

• Korean Institute of Interior Design Journal
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• no.22
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• pp.46-52
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• 2000

The Department store of today contrary to past plays an important role in the culture of modern market, because of the development of national economy and a rise in the standard of living. The improvement of culture and the high growth of economy made a livelihood fertile, mass production and mass consumption of product based on accumulation of technology caused the industry of distribution to activate, and the change of consumption pattern and various purchasing form resulted in the distribution structure like large scale store. This study was composed of pilot study, the first research, and the second research. In pilot study, the types of interior design the first floor of large-sized department store in the Metropolitan area was classified on the basis of the image of interior design prior researched. The contemporary interior design require unique image frequently because of the qualitative enhancement accompanying segmentation and specialization of space. Especially, the emergence of foreign company along with the change of the distribution environment threaten the domestic interior design industry. Therefore, the interior design plant introducing the image elements is able to have critical influence on forming specialized space in department store. This study investigated the interior design limited to the first floor of large-sized department store in the Metropolitan area, therefore the user's preference and the problem of design in domestic department store of today was not examined well. But this study was able to explore the types of interior design image in the first floor of department store and the relation between consisting elements.