• 조명전기설비학회논문지
• /
• 제24권7호
• /
• pp.9-19
• /
• 2010

Fuel cell (FC) distributed generation (DG) is gradually becoming more attractive to mainstream electricity users as capacity improves and costs decrease. New technologies including inverters are becoming available to provide a uniform standard interconnection of DGs with an electric power system. Some of the operating conflicts and the effect of DG on power quality are addressed and investigated through simulations on a real distribution network with an FC power plant. The results of these simulations have proved load tracking capability following the real and reactive power change of the load and have shown the flow of overcurrent from an FC power plant during the ground fault of a distribution line.

• 제어로봇시스템학회논문지
• /
• 제19권2호
• /
• pp.146-151
• /
• 2013

With the development of mobile internet, requirements of positioning accuracy for the LBS (Location Based Service) are becoming more and more higher. The LBS is based on the position of each mobile device. So, it requires a proper acquisition of accurate user's indoor position. Thus indoor positioning technology and its accuracy is crucial for various LBS. In general, RSSI (Received Signal Strength Indicator) measurements are used to obtain the position information of mobile unit under WLAN environment. However, indoor positioning error increases as multiple AP's configurations are becoming more complex. To overcome this problem, an enhanced indoor localization method by AP (Access Point) selection criteria adopting DOP (Dilution of Precision) is proposed.

• 산업공학
• /
• 제21권4호
• /
• pp.403-410
• /
• 2008

Manufacture enterprise's environment is felt difficulty more and more by suddenly rise of oil and raw material price lately. In such difficult environment, Toyota Productive System is becoming good example to all enterprises because Toyota competitive power is rising every year. Now, Toyota Company is becoming benchmarking target. In this paper, we survey Toyota Production System, we try to apply advantage of Toyota Production System to Office Work. We propose TOOF (TOyota OFfice) system which is applied to modifying Toyota Production System in financial aid Business. We hope that Office Work are improved through TOOF system.

• KEPCO Journal on Electric Power and Energy
• /
• 제2권4호
• /
• pp.627-630
• /
• 2016

Recently, the size of wind farms is becoming larger, and the integration of high wind generation resources into power gird is becoming more important. Due to intermittency of wind generating resources, it is an essential to predict power outputs. In this paper, we introduce the basic concept of curvilinear regression, which is one of the method of wind power prediction. The empirical data, wind farm power output in Jeju Island, is considered to verify the proposed prediction model.

• 한국지능시스템학회:학술대회논문집
• /
• 한국퍼지및지능시스템학회 2001년도 추계학술대회 학술발표 논문집
• /
• pp.51-55
• /
• 2001

With the rapid growth of the World Wide Web and electronic information services, information is becoming available on-Line at an incredible rate. One result is the oft-decried information overload. No one has time to read everything, yet we often have to make critical decisions based on what we are able to assimilate. The technology of automatic text summarization is becoming indispensable for dealing with this problem. Text summarization is the process of distilling the most important information from a source to produce an abridged version for a particular user or task. Information retrieval(IR) is the task of searching a set of documents for some query-relevant documents. On the other hand, text summarization is considered to be the task of searching a document, a set of sentences, for some topic-relevant sentences. In this paper, we show that document information, that is more reliable and suitable for query, using document length normalization of which is gained through information retrieval . Experimental results of this system in newspaper articles show that document length normalization method superior to other methods use query itself.

• 한국정밀공학회지
• /
• 제20권5호
• /
• pp.124-131
• /
• 2003

As the new model development lead time becoming shorter and the market requirements becoming more strict, automobile manufacturer begins to utilize 3-dimensional CAD system based techniques such as DMU (Digital Mock-up), Rf (Rapid Prototyping), VE (Virtual Engineering) to meet the market trends. But, no satisfactory utilities have been developed yet, to represent emotional properties such as embossment on the surface of interior parts, touch originated from material characteristics in virtual environment, so it is inevitable to manufacture prototype parts to verify actual feeling which passengers feel in automobile. This paper suggests a methodology to enhance the human sensitivity via embodying embossment on the surface of prototype car interior trim without deterioration of dimensional accuracy using RIM (Reaction Injection Molding) and thermoforming method.

• 한국실내디자인학회:학술대회논문집
• /
• 한국실내디자인학회 2007년도 춘계학술대회 논문집
• /
• pp.242-247
• /
• 2007

As individual's experiences become more diverse and abundant, demands for design are becoming stronger and the propensity to consume is becoming more diverse. In such an age of pluralization, while hotels displaying distinct design characteristics are spreading rapidly like a trend studies regarding expressive characteristics of such design are still insufficient so the accurate understanding and analysis of hotel guest room designs is needed. To this end, this study analyzes and studies the characteristics and trends of design expressions, surveying domestic cases using hotel guest rooms, which have begun to diversify through the rise of design hotels in Korea, as subjects.

• 정보관리학회지
• /
• 제7권2호
• /
• pp.58-77
• /
• 1990

인류사회는 산업사회로부터 정보사회로 진입을 위한 기로에 서 있다. 정보의 생산, 처리, 유통 및 분배는 빠른 속도로 모든 국가의 중요한 경제활동으로 인식되고 있으며, 지식과 정보가 정보사회 도래의 결정적 매체로 작용하고 있다. 본 연구는 이러한 정보화 현상에 따른 정보부문 성장의 실제적 측정, 분석 및 그 주요 요인에 대한 이론적 설명과 더불어 새로운 정보사회 분류 모델 개발을 시도하고 있다.

• 한국기술사회:학술대회논문집
• /
• 한국기술사회 1995년도 제25회 한일기술사 합동 심포지엄 한국편 자료(2차)
• /
• pp.65-79
• /
• 1995

As the economy has picked up in recent years, so have the changes in the food industry. Due to trends in the family structure, two income households are becoming more common, including the in-crease of the female working population. Leisure activities and time continue to increase and to cause changes in the food industry which makes many kinds of food available to everyone, compared to previous times when people ate simply to live. This trend can be easily seen by considering the year to year increase of expenses for eating out. As life as become more and more complicated and full of variety, the trend towards a consumer oriented food industry has accelerated and is becoming a major element of Korean life. In the past, quantity of food was the most important aspect of the food preparation. Today, the dining experience includes social and cultural meanings which emphasizes customar oriented menus and services. In the restaurant business, successful management must consider the interests of both employees and custmers and must be run efficiently and probide good service.

• 한국멀티미디어학회논문지
• /
• 제19권3호
• /
• pp.573-584
• /
• 2016

Recent application range of sensor networks is becoming diverse. It means collected sensor data types are becoming diverse too. These sensor data have their own characteristics. Thus achieving energy efficiency, existing sensor network management policy consider their own characteristics. However, it is inefficient to apply the existing network management schemes for controlling such kind of data at the same time. Because, existing network management schemes considered one type of data only. Therefore, we propose a novel routing scheme that is able to efficient energy conservation through effective data controlling on multi-sensor application environment.