• Proceedings of the KIEE Conference
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• 2006.10c
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• pp.518-520
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• 2006

Due to the rapid popularization of mobile multimedia devices and the Internet as well as the realization of high-speed data transmission and large-volume data recording media, high quality content distribution and ubiquitous information services are making progress and a new type of information distribution and network sharing service has gradually emerged into the market. It is capable of utilizing terabyte sized home servers also in private homes. Under these circumstances, in distribution of content over shared networks, it is crucial to establish DRM (Digital Rights Management) technologies to protect the content from illegal copying and usage. A truly successful DRM system must be built on open worldwide specifications and provide maximum interoperability and user acceptance. An open interoperability of DRM is able to construct highly expandable PKI based DRM, targeting usage between systems, considering the expansion of recent content distribution services and clients This document gives protocol specifications for the exchange of rights information between the DRM module, description of specifications for rights information and encrypted content formats.

• Journal of the Korean Home Economics Association
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• v.49 no.4
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• pp.105-113
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• 2011

The purpose of this study was to develop the pattern of scuba diving suits for local men in their thirties by using 3D body-scanned data. It is widely acknowledged that draping method is more suitable than flat pattern for body shape as most scuba diving suits in the market are designed to fit the body tightly in a single piece with sleeves and legs. A dummy for this study was made based on men's standard clothing sizes in 30's which was derived from data of 2004 Size Korea. Accordingly, the basic body block was built upon through draping method. Next, a scuba diving suit was made from neoprene, followed by fit and the clothing pressure tests in order to evaluate the diving suit's functionality and comfort. The results of the fit test had high points of 4.33 in majority parts except armhole and crotch ones. In comparison of clothing pressure between wearer and dummy, the clothing pressure of wearer was indicated relatively low in most parts other than armhole and knee, resulting from cushion function of skin and muscle and high stretch of fabric.

• Journal of the Korean Home Economics Association
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• v.40 no.5
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• pp.179-193
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• 2002

This study aims to examine the forming procedure of consumer satisfaction from Internet shopping experience. Many studies on the satisfaction have primarily focused on the examination of the antecedents of satisfaction along with the expectation-disconfirmation paradigm dominating the former studies. This study has built an Internet shopping expectation-disconfirmation model as to apply the expectation-disconfirmation into the condition of the Internet shopping. The summary of study represented in following. l. The expectation of risk and performance of benefit had a significantly positive effect on the perceived disconfirmation. In addition, an expectation of benefit and performance of risk had a significantly negative effect on the perceived disconfirmation. 2. A performance of risk and performance of benefit not only had a significantly indirect effect, but also a significantly direct effect on the consumer satisfaction. But expectation of risk and expectation of benefit had no significant direct effect on satisfaction. 3. Not only the perceived disconfirmation had a significant positive effect on satisfaction, but also an effect of the perceived disconfirmation on satisfaction(0.472) is larger than that of the performance of risk or performance of benefit. Meaning that, it is desirable for one to apply the expectation-disconfirmation model into the Internet shopping circumstances as much as the off-line markets.

• Current Optics and Photonics
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• v.1 no.2
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• pp.90-94
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• 2017

Visible light identification (VLID) is a user identification system for a door lock application using smartphone that adopts visible light communication (VLC) technology with the objective of high security, small form factor, and cost effectiveness. The user is verified by the identification application program of a smartphone via fingerprint recognition or password entry. If the authentication succeeds, the corresponding encoded visible light signals are transmitted by a light emitting diode (LED) camera flash. Then, only a small size and low cost photodiode as an outdoor interface converts the light signal to the digital data along with a comparator, and runs the authentication process, and releases the lock. VLID can utilize powerful state-of-the-art hardware and software of smartphones. Furthermore, the door lock system is allowed to be easily upgraded with advanced technologies without its modification and replacement. It can be upgraded by just update the software of smartphone application or replacing the smartphone with the latest one. Additionally, wireless connection between a smartphone and a smart home hub is established automatically via Bluetooth for updating the password and controlling the home devices. In this paper, we demonstrate a prototype VLID door lock system that is built up with LEGO blocks, a photodiode, a comparator circuit, Bluetooth module, and FPGA board.

• The Journal of the Korea Contents Association
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• v.19 no.12
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• pp.9-17
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• 2019

The Internet of Things (IoT) is a technology that connects to the Internet with built-in sensors and communication functions on various objects and has been used in various fields such as smart home and smart factory. Recently, as interest in air pollution information such as fine dust is increasing, the apps for providing weather information and air pollution information based on IoT technology are being developed. In this study, we aims to provide visual air pollution and weather information and develop useful services such as appliance automation using this information. for this study, we designed and implemented Smart Services that provide home automation, messaging and alarm, visual air pollution and weather information using air pollution and weather information based on IoT.

• Journal of the Korean Home Economics Association
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• v.47 no.10
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• pp.97-108
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• 2009

As one of the conservation strategies, the city of Jeonju established regulations to conserve and revitalize the Hanok village as an attractive tour site. Some of old traditional houses were renovated into traditional inns. A couple of traditional houses were additionally built for lodging houses. The need for urban rehabilitation and adaptive re-use has been growing in Jeonju province. The purpose of this study was to examine how the traditional houses were converted into lodging places balancing the conflict issues such as preserving the unique characteristics of Hanok and updating functional requirement of modern lodging in terms of sustainable reuse and development. For this study, site visits and intensive interview with the owners of the seven traditional lodges were conducted. There was lack of guidelines and strategies renovation or rehabilitation of Hanok as lodging facility for sustainable use and revitalization of city. For the seven traditional Hanok inns, layout of rooms characterized as separate and disconnected, while traditional houses were open, flexible and connected regarding room arrangement. In addition, for sustainable development, the living environment of the community should be secured and align with developing strategies of the area.

• Journal of the Korean Institute of Intelligent Systems
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• v.23 no.2
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• pp.158-165
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• 2013

This paper presents design and workspace analysis of a Korean home service robot. The robot is designed with specific needs of floor-task applications suitable for Korean life style. Shoulder and waist of the robot are adjusted by sliding mechanism to increase the workspace of the robot arms. Manipulators are designed and built and their workspaces are analyzed. Experimental studies of the robot for cleaning the floor are conducted.

• Journal of the Korean Home Economics Association
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• v.50 no.2
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• pp.11-23
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• 2012

This qualitative study attempts to analyze the separation experiences of wild geese families from a social exchange perspective. The participants of this study were 16 mothers who lived apart from their partners for the purpose of educating their offspring. To collect data, in-depth interviews were conducted with the mothers about the decision-making process and the separation experiences. The results showed that there was a unique educational factor in Korea that affected wild geese families' decision on family separation. Geese families had to face psychological inconvenience caused by negative eyes from society. In addition, the fathers suffered loneliness and had difficulties in doing household chores, and the mothers experienced an overload of child parenting. On the other hand, emotional relationship between the husband and wife was enhanced, and the friendly relationship between a mother and her children was built. The biggest reward from the wild geese families turned out to be the educational achievement of their children.

• Journal of the Korean Society of Clothing and Textiles
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• v.15 no.4 s.40
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• pp.381-392
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• 1991

The purpose of this is to investigate the color of Art Deco Fashion in Paris. (1920-1930) Through the age of Art Deco style, the enormous modern cities were built up and numerous life-constructions were designed conspiciously in Paris. Under this situation, the usage of the 'color' became very important element of design area and also it bestowed new form upon the modern design. The black beauty of Art Deco style was the outcomes of cubism, black-arts, and pragmatism. And the black beauty was regarded as the proper color to represent simplicity. Simplicity was the best way to express Art Deco style. The color and light of metal were used adequately to express a geometrical and streamline form; it was raised as a new beauty in this period. The primary colors were used to recognize the simplified forms effectively. New pastel colors, which signified differently with Art Nouveau were born centering around the Youth Culture like a summer resort and a sun bath. Also they expressed neon signs and atmosphere of beach by means of the tropical colors. At last the color of Art Deco style opened the new age. And it was started to use the various colors in design field from at this time.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2019.05a
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• pp.334-337
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• 2019

In this study, we built the data collection system to learn user's habit data by deep learning and to create an indoor environment according to the situation. The system consists of a data collection server and several sensor nodes, which creates the environment according to the data collected. We used Google Inception v3 network to analyze the photographs and hand-designed second DNN (Deep Neural Network) to infer behaviors. As a result of the DNN learning, we gained 98.4% of Testing Accuracy. Through this results, we were be able to prove that DNN is capable of extrapolating the situation.