• Title/Summary/Keyword: 산학서(算學書)

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NAH method for reducing sound source generated in air-conditioning rotary compressor (NAH기법을 이용한 공조용 컴프레서 소음저감 응용)

  • Kim, Heui-Cheol;Lee, Dong-Yeon;Yi, Hwa-Cho;Shim, Jae-Sool
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.5
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    • pp.2011-2018
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    • 2011
  • The paper demonstrates how to deal with the Near-field Acoustic Holography method (NAH) for reducing noise source which is generated in air-conditioning compressor. Sound radiation was measured for both normal compressor and fault compressor. The acoustic noise holograms are predicted by measuring at discrete multiple points around the two compressors and are thereafter reconstructed on the surface of the compressors. 1344 measuring points are used by two microphones in which one is scanning microphone and the other is reference microphone. NAH is a good tool for the visualization of Sound so we can show the source of sound graphically. In this paper, the NAH method found the exact noise source position on the surface of the compressor and the noise-related sub part in the compressor. We found the NAH and is very useful as a noise reduction tool for home-appliance device.

The Late 18C Hwanghae-Gamsa's Utilization of Governing and Ritual Institutions in Haeju-Mok -Focused on "Haeyeong Ilgi"(Mae-Su Seo)- (18C말(末) 황해감사 서매수(徐邁修)의 집무와 해주목 관영시설의 이용 -"해영일기(海營日記)"서매수(徐邁修)를 중심으로-)

  • Yeo, Sang-Jin
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.9
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    • pp.4244-4252
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    • 2012
  • This study aims to analyze the late 18th century Hanghae-Gamsa's(黃海監司; the provincial governor of Hanghae-Do) utilization of governing institutions in Haeju-Mok(海州牧) focused on his duties and ritual ceremonies. Haeyeong-Ilgi("海營日記") which is Hangha-Gamsa's official diary written by Mae-Su Seo(1731-1818) is closely investigated for that purpose. The arrival ceremonies were held at Geumcheon and the Gyogwui(交龜; the change-over ritual ceremonies) were held at Geumcheon and Baecheon. Especially the arrival ceremony held at Haeju-Mok is very spectacular compared with other cities. Through this study it was able to confirm the place of regular and irregular ritual ceremonies held and the aspects of governing institutions' utilization in Haeju-Mok.

Knowledge of Modern housing of the Textbooks for Physiology and Hygiene in Korea 1894-1910 (생리 및 위생분야 교과용도서의 근대적 주거지식(1894-1910))

  • Kim, Myung-Sun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.9 no.5
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    • pp.1328-1333
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    • 2008
  • The new knowledge in the textbooks for Physiology and Hygiene in Korea 1905-1910 was focused on the problems of hygiene. Lighting, ventilation, dryness were proposed as main conditions fer hygienic housing, for which management and planning methods were explained. This knowledge was taught as 'scientific' or 'modern' knowledge based on the physiological theory and air property, thereafter the conditions were placed as important conditions of modern housing.

The Search of the Habitus Formation Process in Professional Football Club Supporters (프로축구 서포터즈의 아비투스 형성과정 탐색)

  • Oh, Byoung-Don;Yu, Young-Seol
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.8
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    • pp.3672-3681
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    • 2013
  • The purpose of this study was to analyze subculture of professional football supporters with a view of Bourdieu's Habitus theory. What sorts of mechanism were worked when supporters formed their Habitus. The methods adopted in the article was qualitative. The qualitative information on the nature of their fandom was gleaned from 'virtual participant observation' or 'interviewing' of professional football fans that participated in discussions on the internet and participant observation of professional fans. The intensity and criteria sampling method was used to select 6 supporters who had participated in the supporting activities for more than five years and played crucial roles in running their organization as officials. The textual analysis which is consisting of translation, coding, and processing was used to mean the identification and exegesis of contextualization cues that make a text meaningful to the professional football supporters. an intended audience. The findings of this study were that (1) the subculture variety of activities for players and coaching staffs were the fundamental factors when supporters formed their subculture. (2) the professional supporters became habitus through the progressively development of subcultures such as enthusiastic supporters, small meetings, and events relating to soccer players.

Vibration Intensity Method to Detect Vibration Source of Rotary Compressor (로터리 컴프레서 진동원 검출을 위한 인텐시티 기법)

  • Kim, Heui-Cheol;Lee, Dong-Yeon;Yi, Hwa-Cho;Shim, Jae-Sool
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.8
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    • pp.3398-3405
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    • 2011
  • Vibration intensity (VI) method is used to reduce sound source generated from air-conditioning rotary compressor. Generally VI method is a good tool to find a sound source through vibration power flow. In this paper, the vibrations are measured by using the 3 uni-axial accelerometer from both the shells of the normal compressor and the fault compressor. The VI method successfully found out the sound source position on the surface of the compressor. In addition, the main noise (3kHz ~ 6.3kHz) was deminished by applying the newly designed compressor inner part which is related to the orginal noise source.

A Network Analysis on Industry-University Cooperation based on Big Data Analytics (빅데이터 기반 산학협력 네트워크 분석)

  • Dae-Hee Kang;Hyunchul Ahn
    • The Journal of Bigdata
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    • v.6 no.2
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    • pp.109-124
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    • 2021
  • In this paper, the structural characteristics of Industry-University cooperation networks are analyzed using network analysis. Recent studies have shown that technological cooperation and joint research has a positive effect on R&D performance. In order to boost innovation performance, various types of cooperative activities and governmental policy supports for major R&D stakeholders(i.e. universities, laboratories, etc.) are provided. However, despite these efforts, the outcome is still insufficient, so it is time to prepare for a plan to build an innovative network to strengthen university-centered Industry-University cooperation activities. Specifically, this study builds the networks according to the form of Industry-University cooperations(i.e. patent, paper, joint research, and technology transfer), and different types of Industry-University cooperation networks are analyzed from a statistical viewpoint by using QAP correlation and regression analyses. The analysis results show that joint research network is closely related to paper network, and is related to other Industry-University cooperation networks. This study is expected to shed a light on supporting innovation activities such as establishing Industry-University cooperation strategies and discovering cooperative partners necessary for creating new growth engines for universities.

전기관계기업체의 연구개발기구현황 및 장래계획에 관한 조사

  • 박민호;정연택
    • 전기의세계
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    • v.26 no.4
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    • pp.18-22
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    • 1977
  • 정부에서 적극 추진중인 제4차 경제개발 5개년계획의 시작을 앞두고 1976년도 본학회 조사사업의 일환으로 전기관계기업체의 연구개발현황 및 장래계획에 관한 조사를 실시하므로서 중화학공업시책에 적극 호응하고 국내 전기공업계와 학계간의 상호 기술정보를 교환하여 산학협동체제를 더욱 공고히하고 전기공업발전에 이바지하고자 다음과 같은 설문서를 전기공업협동조합 및 전기용품제조협회산하업체에 발송하여 그 결과 41개업체를 대상으로 설문서의 내용을 정리 검토하여 보고하는 바이다.

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Impact analysis of Industrial-University cooperation adherency degree and cooperation degree configuration variable on satisfaction (산학협력 밀착도, 협력도 구성변수가 만족도에 미치는 영향 분석)

  • Kim, Young-Bu
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.9
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    • pp.359-368
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    • 2016
  • In the 21st century, the Korean university education system is focused on innovation and change, including cooperation between industry and universities. It should be a goal to foster an industry-university ecosystem through interactions between universities and industry. Therefore, it is important to measure their relationships and to find advisable ways to measure the final results of industry-university cooperation. This paper sets out the achievements in cooperation and the satisfaction from such enterprises and measures mutual relationships influencing satisfaction from industry-university cooperation as to adherence and cooperation. Therefore, this research focuses on regression equation analysis in order to analyze the influence from satisfaction with industry-university cooperation based on factors in the relations between industry and universities. Also, as we examined the multicollinearity problem, before analyzing multiple regression, the multicollinearity problem appeared to be relatively irrelevant. In particular, the satisfaction variable, which can also be set as a subordinate variable, was in this research constructed as a high-dimensional subordinate variable composed of five individual variables. We then analyzed how the adherence construct factor and degree of cooperation construct factor influences the respective and subordinate satisfaction variables. As a result, the degree of realization of local customized programs was shown by the most significant variables. The biggest factor influencing satisfaction with industry-university cooperation proves the degree of realization for appropriate programs under local conditions, such as education, research, and technique guidance.

The Influence of Industry-University/Government Research Institute linkages on Service Sector Firm's Innovation Performance (산학연 협력이 서비스기업 혁신성과에 미치는 영향)

  • Choi, Seok-Joon;Seo, Young-Woong
    • Journal of Korea Technology Innovation Society
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    • v.14 no.3
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    • pp.689-710
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    • 2011
  • The purpose of this paper is to positively analyze firms' innovative performance enhanced by cooperation, such as industry-university or industry-government, in service industry. We use PSM method (Propensity Score Matching) based on Korea Innovation Survey data in service industry to investigate it. This empirical study finds that cooperation with university or government partially has positive effects on firm's patent applications and innovation. So, we suggest we need various policies for research institute linkage in service industry.

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지역 거점 대학과 중소 SI 업체와의 산학 협동 : Web CMS 개선 사례

  • Kim, Jong-Cheol;Kim, Yeong-Il;Lee, Hyeon-U;Jang, Rae-Hyeon;Go, Seok-Ha
    • Proceedings of the Korea Society of Information Technology Applications Conference
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    • 2006.06a
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    • pp.208-231
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    • 2006
  • JSP 모델 1로 개발된 웹 어플리케이션의 문제점은 HTML과 자바 코드가 같은 파일로 결합되어 유지관리에 어려움을 준다. HTML과 자바가 같은 파일로 결합될 때, HTML과 애플리케이션의 논리적인 측면 모두가 복잡해지기 때문에 여러 사람이 이들 파일에 대해 책임을 갖게 되는 것이 불가피해지는 문제점이 발생한다. 반면, JSP 모델 2(MVC 모델)는 객체지향 방법론의 구현으로 구현과 모델, 뷰를 분리함으로써 위의 문제점을 해소한다. 우리가 개선할 Web CMS도 JSP 모델 1로 개발된 웹 어플리케이션으로 JSP가 가지고 있는 문제점을 가지고 있었다. 이런 문제점을 개선하기 위해 기업에서 대학측에 Web CMS 개선 프로젝트를 제안하였다. 프로젝트에 적용한 기술들은 객체지향 모델링 언어인 UML을 기반으로 설계를 하고, 일정관리 도구인 MS-Project에 의해 일정관리를 하였다. 개발 프로그래밍 언어는 웹 어플리케이션 아키텍처인 자바 스트러츠로 개발하였다. 이에 본 논문은 새로운 기술인 객체지향 방법론을 적용하기 원하는 중소 SI 기업과 지역 거점 대학과의 산학협동 사례를 제시한다. 지방 중소 SI 기업과 그 기업에서 개발한 Web CMS를 지역 거점 대학과의 산학 협동을 통해 신기술로 개선한 과정과 방법, 결과에 대해 말하고자 한다. 또한, 기업과의 산학협동을 통해 얻은 교훈을 통해 대학과 기업이 서로 상생할 수 있는 방법에 대해 고찰해 보고한다.

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