• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2008.06a
• /
• pp.453-454
• /
• 2008

본 논문은 가로등 LED조명 설계를 위해 LED(Light Emiting Diode)소자 특성 분석 및 시뮬레이션을 통한 광 특성을 개선하고자 하였다. 시뮬레이션은 Geometry 와 Optic 특성을 고려하였으며, 광속, 스펙트럼, 지향각, 조도값 분석을 통해 제품과 시뮬레이션 특성을 비교하였다. 광 특성 개선 설계변수로는 $30^{\circ}C{\sim}50^{\circ}$ 사이의 2차 렌즈를 각도별로 설계하여 35 도 렌즈 각도일 때 최대 조도특성을 확인했으며, LED 모듈간 간격 배치는 3Cm 일 때 가장 높은 조도특성이 나타났다. 9개의 LED모둘 각도를 정면 Angle($\theta1$)과 측면 Angle($\theta2$)으로 구분하여 각도에 따라 배치 시켜본 결과, 정면 Angle($\theta1$)은 0도일 때, 측면 Angle($\theta2$)은 10도 일 때 가장 높은 조도 특성이 나타났다.

• Journal of the East Asian Society of Dietary Life
• /
• v.12 no.6
• /
• pp.517-527
• /
• 2002

This study investigated the attitude toward and practices of the wedding foods among housewives. Data were collected from 525 housewives living in areas of Busan and Kyungnam and analyzed by bivariate analyses. Most of the respondents were from Busan metropolitan area (77.9%) and in the age of thirties and forties (66.3%). About the occupation, 43.5% of them were full-time housekeepers and 34.7% were workers. The highest proportion was found in those completed the high school (49.3%), those with a monthly family income of a million won (44.2%), and those from the nuclear family type (66.9%). For the attitude toward the continuity of wedding foods, most respondents (52.1%) had an opinion that the practice of serving the traditional wedding foods should be disappeared in a near future. The respondents had a general attitude that procedures of wedding ceremony including wedding foods should be changed to reflect the degree of modernization. Also, they showed an attitude that one of the wedding ceremonial procedure, Pebaek had to reflect the current custom. The kinds and the volume of wedding foods should be lessened so that the ceremonial procedure should be brief which included only the basic one. Most of the respondents preferred the basic one to the luxurious one. These attitudes toward and practices of wedding foods varied depending on sociodemographic characteristics.

• Proceedings of the Korea Society for Simulation Conference
• /
• 2005.11a
• /
• pp.71-76
• /
• 2005

XML is rapidly becoming one of the most widely adopted technologies for information exchange and representation on the World Wide Web. However, the large part of data is still stored in a relational database. Hence, we need to convert relational data into XML documents. The most important point of the conversion is to reflect referential integrities In relational schema model to XML schema model exactly. Until now, FT, NeT and CoT are suggested as existing approaches for conversion from the relational schema model to the XML schema model but these approaches only reflect referential integrities which are defined explicitly for conversion. In this paper, we suggest an algorithm for automatic extraction of implicit referential integrities such as foreign key constraints which is not defined explicitly in the initial relational schema model. We present translated XML documents by existing algorithms and suggested algorithms as comparison evaluation. We also compare suggested algorithm and conventional algorithms by simluation in accuracy part.

• Journal of the Semiconductor & Display Technology
• /
• v.12 no.2
• /
• pp.7-11
• /
• 2013

This paper presents a study on the design for contamination preventation system of solar battery. The system of contamination preventation has an wind amplifier. Wind amplifier is conceptually designed by using TRIZ. The surface of solar battery is covered with dust during accumulate the energy. The dust cause reduce power of photovoltaic module and efficiency drop of photovoltaic system. Reflect and absorb of incident ray are caused by the dust on surface of solar battery. The solution of this problem has been derived using 6SC(6 steps creativity)TRIZ. The wind amplifier which has structure such as funnel shape. The incident wind in the wide hole is amplified by the gate become narrow. The system of contamination preventation with wind amplifier which mounted on the side of the solar battery surface reduces the reflect and absorb and improve the efficiency of photovoltaic system.

• Journal of Korean Academy of Nursing
• /
• v.40 no.6
• /
• pp.903-912
• /
• 2010

Purpose: This study was conducted to examine whether the level of classification for long-term care service under longterm care insurance reflects resource utilization level for residents in nursing homes. Methods: From 2 long-term care facilities, the researchers selected 95 participants and identified description and time of care services provided by nurses, certified caregivers, physical therapists and social workers during a 24-hr-period. Results: Resource utilization level was: 281.04 for level 1, 301.05 for level 2 and 270.87 for level 3. Resource utilization was not correlated with level. Differences in resource utilization within the same level were similar with the coefficient of variance, 22.7-27.1%. Physical function was the most influential factor on long-term care scores (r=.88, p<.001). The level for long-term care service did not reflect differences in resource utilization level of residents on long-term care insurance. Conclusion: The results of this study indicate that present grading for long-term care service needs to be reconsidered. Further study is needed to adjust the long-term care classification system to reflect the level of resource utilization for care recipients on the long-term care insurance.

• Journal of the Korean housing association
• /
• v.14 no.4
• /
• pp.77-85
• /
• 2003

The facade design of apartment is getting more important, since residents'needs on raising the quality of housing have increased, and also public interests on urban landscape are higher than before. As a way of improving facade design the necessity of remodeling consequently has been risen. The government also relieves the regulations related to remodeling. A apartment facade design should address how to express both identities and aesthetic tastes of residents, so they want to reflect their own ideas and opinions on the apartment facade design during the remodeling process. It is not always easy, unfortunately, to reflect residents'ideas and opinions due to the public characteristics of apartment facades and absence of tools that support effective design participation. This paper proposes an internet-based collaborative design process that supports residents'active participation in the exterior remodeling process of apartment. We outline three main issues involved in developing the design system: 1) a semantic facade database built upon classification of building facades; 2) an Internet-based facade modeler based on a real-time, rule-based procedural modeling method; and finally 3) the virtual reality(VR) simulation that allows a group of designers and residents to design in a collaborative fashion.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.16 no.2
• /
• pp.222-227
• /
• 2006

Recently the research for Traveling Salesman Problem (TSP) using DNA computing with massive parallelism has been. However, there were difficulties in real biological experiments because the conventional method didn't reflect the precise characteristics of DNA when it express graph. Therefore, we need DNA sequence generation algorithm which can reflect DNA features and reduce biological experiment error. In this paper we proposed a DNA sequence generation algorithm that applied DNA coding method of evolution model to DNA computing. The algorithm was applied to TSP, and compared with a simple genetic algorithm. As a result, the algorithm could generate good sequences which minimize error and reduce the biologic experiment error rate.

• Journal of the Korean Institute of Educational Facilities
• /
• v.27 no.2
• /
• pp.87-95
• /
• 2020

The purpose of this study is presentation of architectural planning direction and program space of youth training center. For this goal, surveyed the characteristics of youth and local residents who the main user of the center Through this survey, it could be accommodated about the needs of youth training facilities and seek user-centered planning methodologies. To this end, this study conducted a survey of users of youth training facilities in Cheonan-si to suggest the importance of architectural planning direction and space to reflect users' needs and regional characteristics. In the process, this study conducted a consciousness survey and importance influence factors assessment focused on commonalities and differences between youth and adult groups, which are the main user groups of youth training facilities. It is believed that the results of consciousness survey and importance influence factors assessment will be used as basic data to select the scale and programs of space that reflect the needs of users when planning youth facilities and related facilities in the future.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
• /
• v.12 no.7
• /
• pp.1167-1174
• /
• 2001

Antenna PIM(Passive Intermodulation) level measurement results are rarely credited due to the external signal receiving characteristics of antenna, and seriously affected by the external PIM sources such as anechoic chamber absorber and antenna tower. In this paper, antenna PIM model for the Reflect PIM measurement method is presented. Through the null point phenomena of the PIM level obtained by antenna PIM model simulations and experimental results, we concluded that antenna PIM level measurements are greatly affected by the PIM level generated on the anechoic chamber absorber and the path differences of PIM signal reflected to the antenna.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.9 no.11
• /
• pp.1249-1254
• /
• 2014

Big data based on numerous data made by the people are used in order to obtain useful information. We can obtain more useful information if it can apply machine learning techniques added deformation of human memory on the characteristics of the computer program. And big data is predicted by using these conclusions. Humans are used to remember similar data as an original data, so big data processing technology should reflect these human characteristics. In this study, this algorithm to provide the selectivity of information is proposed. This algorithm is the technology to reflect the above factors. This algorithm is selected the data with high selectivity to determine similar data based on the deformation characteristics of the data.