• Title/Summary/Keyword: scale merit

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On the Principles and Applications of Wave Field Synthesis (WFS의 원리와 활용에 관하여)

  • Yoo, Jae-Hyoun;Shim, Hwan;Chung, Hyun-Joo;Sung, Koeng-Mo;Kang, Kyeong-Ok
    • The Journal of the Acoustical Society of Korea
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    • v.28 no.8
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    • pp.688-696
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    • 2009
  • There are many studies on Wave Field Synthesis(WFS) which provides better presence and spaciousness than conventional discrete multichannel audio reproduction methods. However, it has several problems such as the listener-enclosing loudspeaker array and pre-authorized object-based source signal, so it is not widely used except in large-scale listening rooms. This paper presents a method which utilizes the merit of WFS in small listening rooms such as a living room.

A Study on the Analysis and Improvement of Current Fire Protection Standard for Buildings (현행소방시설설치기준의 분석과 개선방안에 관한 연구)

  • 정병재;이경회
    • Fire Science and Engineering
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    • v.4 no.2
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    • pp.3-13
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    • 1990
  • Fire Protection System is facilities that Control the fire by mechanic means. Buildings Over a Certain Scale is required this system. As the small from the fire extinguisher as the large to the sprinkler system of automatic fire extinguishing equipment the kinds are various. With the development of architecture technique while modern higher buildings are increased. As fire is a first product that human make, it performed many profits and services for our mankind. Sometimes as it is profitable fire or harmful fire, it takes charge of human's life culture. Therefore fire protection system is facilities that control the ]after fire by mechanic means Building over a certain scale is required this system. As the small from the fire extinguisher as the large to the sprinkler system of automatic fire extinguishing equipment, the kinds are various. With the development of architecture technique while modern Higher buildings are increased high level and fire prevent facilities aren't reached to that level. The object of this study is present the problem which appear from the analysis of place standard for fire protection facility. This study described as a following order. First. We are going to look history of the fire protection system and change course of that with the year and facility. Second, We say the frame system and special nature of the foreign fire prevent Act. Third. We understand the control reality of fire protection system. Fourth. We took out the merit of foreign fire prevent law and the problem of our current domestic system. The placing standard of proper fire protection facilities that be presented from this study are followed next. 1) We have reinforce sprinkler system placing standard for the fire extinguishing and check the spread of fire. 2) We must to be ruled the standard for keeping fire prevention system that are received reality and people's idea. 3) We should prepare lawful basis which can be place fire prevention center. 4) We have to correct the standard of use about complex building without mainuse and we take increase the real effectiveness of this. 5) We ought to match the use of current fire prevention act and the use of architecture law.

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Part II A Study on the Analysis and Improvement of Current Fire Protection Standard for Buildings (현행소방시설설치기준의 분석과 개선방안에 관한 연구II)

  • 정병재;이경회
    • Fire Science and Engineering
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    • v.5 no.1
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    • pp.5-14
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    • 1991
  • Fire Protection System is facilities that Control the fire by mechanic means. Buildings Over a Certain Scale is required this system. As the small from the fire extinguisher as the large to the sprinkler system of automatic fire extinguishing equipment the kinds are various. With the development of architecture technique while modern higher buildings are increased. As fire is a first product that human make, it performed many profits and services for our mankind. Sometimes as it Is profitable fire or harmful fire, it takes charge of human's life culture. Therefore fire protection system is facilities that control the latter fire by mechanic means Building over a certain scale is required this system. As the small from the fire extinguisher as the large to the sprinkler system of automatic fire extinguishing equipment, the kinds are various. With the development of architecture technique while modern higher buildings are increased high level and fire prevent facilities aren't reached to that level. The object of this study is present the problem which appear from the analysis of place standard for fire protection facility. This study described as a following order. First, We are going to look history of the fire protection system and change course of that with the year and facility. Second. We say the frame system and special nature of the foreign fire prevent Act. Third. We understand the control reality of fire protection system. Fourth. We took out the merit of foreign fire prevent law and the problem of our current domestic system. The placing standard of proper fire protection facilities that be presented from this study are followed next. 1) We have to reinforce sprinkler system placing standard for the fire extinguishing and check the spread of fire. 2) We must to be ruled the standard for keeping fire prevention system that are received reality and people's idea. 3) We should prepare lawful basis which can be place fire prevention center. 4) We have to correct the standard of use count about complex building without mainuse and we take increase the real effectiveness of this. 5) We ought to match the use of current fire prevention act and the use of architecture law.

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Implementation of a Parallel Web Crawler for the Odysseus Large-Scale Search Engine (오디세우스 대용량 검색 엔진을 위한 병렬 웹 크롤러의 구현)

  • Shin, Eun-Jeong;Kim, Yi-Reun;Heo, Jun-Seok;Whang, Kyu-Young
    • Journal of KIISE:Computing Practices and Letters
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    • v.14 no.6
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    • pp.567-581
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    • 2008
  • As the size of the web is growing explosively, search engines are becoming increasingly important as the primary means to retrieve information from the Internet. A search engine periodically downloads web pages and stores them in the database to provide readers with up-to-date search results. The web crawler is a program that downloads and stores web pages for this purpose. A large-scale search engines uses a parallel web crawler to retrieve the collection of web pages maximizing the download rate. However, the service architecture or experimental analysis of parallel web crawlers has not been fully discussed in the literature. In this paper, we propose an architecture of the parallel web crawler and discuss implementation issues in detail. The proposed parallel web crawler is based on the coordinator/agent model using multiple machines to download web pages in parallel. The coordinator/agent model consists of multiple agent machines to collect web pages and a single coordinator machine to manage them. The parallel web crawler consists of three components: a crawling module for collecting web pages, a converting module for transforming the web pages into a database-friendly format, a ranking module for rating web pages based on their relative importance. We explain each component of the parallel web crawler and implementation methods in detail. Finally, we conduct extensive experiments to analyze the effectiveness of the parallel web crawler. The experimental results clarify the merit of our architecture in that the proposed parallel web crawler is scalable to the number of web pages to crawl and the number of machines used.

Present status of Kochujang, a fermented hot pepper soybean paste, and its globalization (고추장 산업의 현황과 세계화 제안)

  • Shin, Dong-Hwa
    • Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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    • 2005.09a
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    • pp.1-23
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    • 2005
  • Kochujang, a fermented hot pepper soybean paste, is a spicy condiment mixed with red pepper, boiled rice and mold fermented soybean (as koji) which is then fermented for several months. It has unique taste of hot, sweet, salty and savory flavor by all mixed ingredients by fermentation, and is one of most famous Korean traditional foods. The scale of the kochujang industry is about 200 billion won in Korea, and 7.8 million dollars and 4,500 tons in exports. Although it is still not a large part of the food industry in Korea, the scale of soy products will increase because it is a major subsidiary food in our dietary life and has grown from a homemade to a mass produced product. Kochujang has the largest market in the scale of sales among fermented soybean products and has merit because of its domestic base and its ability to grow to an international market due to its unique fermented taste. In order to make kochujang an international food, it Is necessary to study the scientific development of kochujang and the diversity of products using kochujang that are fitted to the taste of people around the world. In addition, participation in various exhibitions and food fairs supported by the government should help to promote kochujang throughout the world. In addition, these should be actively supported by the related businesses. Red pepper, a major ingredient in kochujang, has been widely studied and shown to have a positive effect on the reduction of fat, on the strengthening of the immune system, and on active biological functions. A fermented spice like kochujang has been shown to be beneficial for the body due to the process of fermentation rather than from the red pepper itself. If we prove the various biological functions of kochujang with a particular taste and flavor, it will energize a new market. It is necessary for business to make a continuous effort supported fly the scientific world and by government policy, in order to introduce this traditional food to the world. In the present day, the kochujang market is now on a firm basis and has been activated in the field of its study. Now, it is possible to achieve the birth of a secondary international market by concentrating on these efforts.

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The Effects of Adlerian Encouragement Program on the Interpersonal Satisfaction, Self-efficacy and Self-esteem among Elementary School Students (아들러 심리학에 기반한 격려 프로그램이 초등학생의 대인관계 만족도, 자기효능감, 자아존중감에 미치는 효과)

  • Yu, Li-Hyang
    • The Journal of the Korea Contents Association
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    • v.21 no.9
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    • pp.419-430
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    • 2021
  • The purpose of this study was to examine the effects of Adlerian Encouragement Program on the interpersonal satisfaction, self-efficacy and self-esteem among elementary school students. The program was consisted of 8 sessions: 1st session was for introducing programs and making positive nicknames, 2nd~5th sessions were for abandoning inferiority and discouraged thoughts, displaying posters of success experiences, creating merit trees, 6th~7th sessions were for self-encouragement and other people encouragement, 8th session was for closing the program. Subjects were 40 students who were the fifth grader students at I elementary school in G city. The subjects were divided into an experimental group(N=21) and a control group(N=19). All participants were asked to complete the Interpersonal Satisfaction scale(Kim, 2010), Self-efficacy scale(Han, 2003) and Self-esteem scale(Choi & Jeon, 1993). The pretest and post-test were taken in order to verify the effectiveness of the program. The data were analyzed with ANCOVA. The results are as follows: the Adlerian Encouragement Program had a significant impact on interpersonal satisfaction and self-esteem but didn't show a significant impact on self-efficacy. The study confirmed that the Adlerian Encouragement Program had a significant effect on interpersonal satisfaction and self-esteem of elementary school students, suggesting the encouragement, a key technique in Adlerian psychology, is an important educational philosophy and method for healthy development and democratic class management.

Dominant Point Detection Algorithm on Digital Contours with Constrained Number of Points (특징점의 수를 제약조건으로 하는 선도형의 특징점 검출 기법)

  • Seo, Won-Chan
    • The Transactions of the Korea Information Processing Society
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    • v.4 no.9
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    • pp.2412-2420
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    • 1997
  • An algorithm for detecting dominant points on a digital contour is proposed. The algorithm detects the dominant points from the given contour with the given number of points as a constraint condition. on the basis of the principle of the top-down approach. The dominant points are detected by minimizing the object function that presents the similarity between the given contour and the approximated polygon drawn by connecting the dominant points of candicate. The penalty multiplier method is applied to minimize the augmented Lagrangean function which is made by adding the penalty of the constraint condition to the object function. On the minimization, a local searching method by the partial problem division is considered, and it is clarified that the reasonable solution is obtained by the method. The proposed algorithm has a merit that the dominant points can be detected exactly and stably even for the digital contour composed of multiple-scale features and the similar contours, because it detects them on considering the property of a whole figure of the given contour. It is confirmed that the proposed algorithm is more excellent than other previously proposed algorithms by the comparison and the evaluation through the experiment on suing typical digital curves.

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Control of Methane Emission in Ruminants and Industrial Application of Biogas from Livestock Manure in Korea

  • Song, Man-K.;Li, Xiang-Z.;Oh, Young-K.;Lee, Chang-Kyu;Hyun, Y.
    • Asian-Australasian Journal of Animal Sciences
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    • v.24 no.1
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    • pp.130-136
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    • 2011
  • Methane is known to be one of the major greenhouse gases. On a global scale, livestock farming may contribute 18% of total greenhouse gas emissions. Though methane contribution is less than 2% of all the factors leading to global warming, it plays an important role because it is 21 times more effective than carbon dioxide. Methane emission is a direct result of the fermentation process performed by ruminal microorganisms and, in particular, the archael methanogens. Reducing methane emission would benefit both ruminant production and the environment. Methane generation can be reduced by electron-sink metabolic pathways to dispose of the reducing moieties. An alternative way for methane control in the rumen is to apply inhibitors against methanogens. Generating methane from manure has considerable merit because it appears to offer at least a partial solution to two pressing problems-environmental crisis and energy shortage. An obvious benefit from methane production is the energy value of the gas itself. Control of methane emission by rumen microbes in Korea has mainly been focused on application of various chemicals, such as BES and PMDI, that inhibit the growth and activity of methanogens in the rumen. Alternatives were to apply long-chain polyunsaturated fatty acids and oils with or without organic acids (malate and fumarate). The results for trials with methane reducing agents and the situation of biogas production industries and a typical biogas plant in Korea will be introduced here.

A study about the problems and their solutions in the production process of 3D character animation using optical motion capture technology (옵티컬 모션캡쳐 기술을 활용한 3D 캐릭터 애니메이션에서 제작과정상 문제점 및 해결방안에 관한 연구)

  • Lee, Man-Woo;Kim, Hyun-Jong;Kim, Soon-Gohn
    • Proceedings of the Korea Contents Association Conference
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    • 2006.11a
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    • pp.831-835
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    • 2006
  • Motion capture means the recording of movement of objects such as human beings, animals, creatures, machines, etc in a form applicable to computer. Since the motion capture system can be introduced to the fields where realistic movement of human beings and animals, which cannot be attained with an existing key frame method is required, large scale is necessary or economical burden exists, it has a merit and possibility of new expression. For these reasons, this method is increasingly used in the field of digital entertainment such as movie, TV, advertisement, documentary, music video, etc centering around the game. However, in spite of such an advantage, problems such as too much advance preparation work in digital image expressions using motion capture, marker attachment, compensation of motion data, motion retargeting and lack of professional human resources, etc. are becoming a prominent figure. Accordingly, this study intends to suggest the way of more effective production of motion capture digital image through finding the problems and their draft possible solutions in the production process based on the image production examples using motion capture.

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Treatment of Anterosuperior Rotator Cuff Tear (전 상방 회전근 개 파열의 치료)

  • Moon Gi Hyuk;Ahn Gil Young;Lee Jae Wook;Yoo Yon Sik
    • Clinics in Shoulder and Elbow
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    • v.7 no.1
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    • pp.23-29
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    • 2004
  • It has been reported that rotator cuff tear have good response to arthroscopic or open repair even if the range being so wide. However, the majority of this literature regarding the diagnosis and treatment of tear focused on lesion of the supraspinatus and infraspinatus tendons. But involvement of the subscapularis tendon with rotator cuff tear should be thought to be less common and poorer to open operative repair. Furthermore, some europian author have stated that the rotator cuff tear including the subscapularis tendon are sufficiently distinct in their clinical presentation and prognosis as to merit separate consideration of their diagnosis and treatment. The purpose of this study is to evaluate result of arthroscopic or open repair in patient with rotator cuff tear that include the subscapularis tendon. Of the 128 rotator cuff repairs performed from 1998 through 2003, 12 had a tear that include the subscapularis tendon in combination with the supraspinatus (8 cases) and infraspinatus (4 cases). Mean duration of symptoms before surgical treatment was 6 months (range 3 to 12 months). All 12 patient demonstrated a positive lift off sign. Shoulder function was assessed using the Constant- Murley score, which ranges from 30 to 58. Pain was assessed using a linear visual analogue scale range from 0 to 10. Postoperative Constant score range from 40 to 64 (average 47.8). Pain score improved from 5.5 to 8.5, but there are postoperative pain improvement on nothing in 5 patient. The overall result for 12 patient were satisfy in 2, fair in 5 and dissatisfy in 5: Therefore satisfactory result were noted only in 16 % of this overall group. In conclusion, we have failed to make good result in patient with rotator cuff tear that included the subscapularis tendon. At the result, outcome after surgical repair of this type of rotator tear is comparatively inferior to the result of operative repair of rotator cuff not involved the subscapularis tendon.