• The Transactions of the Korea Information Processing Society
• /
• v.7 no.5S
• /
• pp.1719-1725
• /
• 2000

Since the advance of WWW, internet related fields have been growing very rapidly. Especially, the development of electronic commerce ares have changed even or life style. This paper is about the design and implementation of an internet auction system, which is considered as on of the most attractive internet services. An internet auction system has more complex processes compared with other electronic commerce systems. In auction systems, bids and a successful bid are required in trading all goods. In this paper, I designed and implemented all processes of an internet auction system, in which a bid tracing systems is included for the first time. The bid tracing system is implemented using only HTTP in maintain compatibility in WWW environment. I also used th JAVA blocking concept to simulate two-way communication. The proposed system is implemented on Windows NT environment using JAVA, ASP, and the Oracle database.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2009.10a
• /
• pp.1179-1182
• /
• 2009

In 2007 SeeReal had demonstrated the first large realtime holographic 3D display based on tracked viewing windows. Subsequent work has lead to advanced concepts for overcoming limitations of the prototype. This paper describes the current state of SeeReal's developments and its progress in practical realization of these advanced solutions.

• Journal of the Korean Society of Manufacturing Process Engineers
• /
• v.13 no.6
• /
• pp.145-151
• /
• 2014

The glass used for mobile display windows is required to have high strength. Chemical strengthening by means of ion exchange is widely used glass. The depth of the layer and the compressed stress are affected by tempering temperature and time. The purpose of this study is to investigate the range of DOL and CS, which to less breakage during reliability tests such as the ball drop test, hole drop test, 3-point bending test, drop test, and tumble test with Soda-lime Glass.

• Proceedings of the KSME Conference
• /
• 2008.11b
• /
• pp.2070-2075
• /
• 2008

Identification of steady-state is the first step in developing a fault detection and diagnosis (FDD) system. In a complete FDD system, the steady-state detector will be included as a module in a self-learning algorithm which enables the working system's reference model to "tune" itself to its particular installation. In this study, a steady-state detector of a residential air conditioner based on moving windows was designed. Seven representing measurements were selected as key features for steady-state detection. The optimized moving window size and the feature thresholds was suggested through startup transient test and no-fault steady-state test. Performance of the steady-state detector was verified during indoor load change test. From the research, the general methodology to design a moving window steady-state detector was provided for vapor compression applications.

• 한국태양에너지학회:학술대회논문집
• /
• 2009.11a
• /
• pp.222-226
• /
• 2009

The parts of building which has the most influence on thermal load are skins, outer walls and windows. Among them, window is the worst weak point of building even if it has many advantage of solar radiation gain than other parts. The present time, many researches on various performance of window and many types of system-window are being made. This study evaluates thermal performance of tilt & sliding system window by simulation program Therm 5.2 and Window 5.2. After making a sample model improving it's thermal weak point, this study evaluates real thermal performance of system window. As a result, this study understands manufacture ability condition of domestic company and proposes a research plan of system window.

• Journal of the Korean Institute of Navigation
• /
• v.23 no.4
• /
• pp.63-76
• /
• 1999

This paper aims at developing an integrated fleet management support system for industrial carriers who usually control the vessels of their own or on a time charter to minimize the cost of shipping their cargoes. The work is mainly concerned with the operational management problem of the fleet owned by a major oil company, a typical industrial carrier. The optimal fleet management problem for the major oil company can be divided into two phase problem. The front end corresponds to the production operation problem of the transportation of crude oil, the refinery operation, and the distribution of product oil to comply with the demand of the market. The back end is to tackle the fleet scheduling problem to meet the seaborne transportation demand derived from the front end. Relevant optimization models for each phase are proposed and described briefly. Then a user-friendly integrated fleet management support system is built based on the proposed optimization models for both ends under Windows environment. A case study reflecting the practices of fleet management problem for the major oil company is carried out by using the system.

• Journal of the Korean Institute of Educational Facilities
• /
• v.12 no.6
• /
• pp.5-17
• /
• 2005

The purpose of the study is to propose architectural design standards of the Multi-purpose Auditorium planning in educational facilities. The success of the design is measured by how well variable elements are applied to parts of Multi-purpose Auditorium and designed and equipped so that all groups-amateurs, professionals, youth, and adult alike-may use it effectively. The use of this facility will extend over a wide range, including concerts, plays, motion pictures, forums, and other forms of presentation. The wall, stage, roof, windows, and furnitures are important parts of Multi-purpose Auditorium and variable elements can applied to these parts. To successfully application of variable elements, it is necessary that these elements are considered in planning phase including time schedule planning. Various elements are permit a more informal and flexible arrangement and extensive learning activity.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2001.10a
• /
• pp.15-18
• /
• 2001

기존의 Association Rule 의 적용은 각 사건들이 고유한 연관관계를 갖는 다는 전재 하에 이를 이용하여 Data Mining Association Rule(연관규칙)을 적용해 왔다. 만약 이러한 연관규칙이 포함하지 않는 데이터에 대해서는 기존의 Rule 을 이용하기 위해서는 현재의 데이터를 재구성해야만 하는 필요성이 존재를 해왔다. 본 논문에서는 위와 같은 데이터의 재 구성없이 연관규칙을 포함하지 않은 데이터로부터 새로운 알고리즘을 이용하여 기존의 Association Rule 을 적용하고자 한다.

• Proceedings of the KIEE Conference
• /
• 2003.07b
• /
• pp.1241-1243
• /
• 2003

The wavelet transform can apply various lengths of windows according to the amount of signal frequencies. So characteristics of nonstationary disturbances were found to be more closely monitored by the wavelet transform. In this paper, the wavelet transform is applied to the algorithm for monitoring various power quality disturbances. And personal computer monitoring system was developed.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2001.11a
• /
• pp.130-135
• /
• 2001

In this study, I have researched into the causes of defects in apartment house, The results of this study are listed below. (1) Water leakages which result from land sinking and cracks, results of misuse of back filling method, are the main reason of defects in civil engineering work and architectural work. (2) Inexperience and unwillingness are the main reason of defects in plaster work. (3) In windows work and painting work, the main reasons are lacks of precision construction and efflorescence resulting from outdoor air, respectively. (4) Defects in waterproofing work and electric work result from fault construction by low unit Costs. (5) Equipment work requires uses of standardized construction materials and management, and landscape architecture work requires minimizing human mistakes, for instance, degin carelessness. For the reasons stated above, the causes of defects in apartment house are insufficient construction labors, inferior construction materials, urgent construction process time, and conscientiousless industrialists who only seek after a profit margin.