• The monthly packaging world
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• s.138
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• pp.77-83
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• 2004

• 전기산업
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• v.10 no.1
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• pp.88-92
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• 1999

• The Magazine for Energy Service Companies
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• s.22
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• pp.22-25
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• 2003

혜성L&M(대표 장기원)의 L과 M은 Lighting과 Media의 약자이다. 89년 서광조명으로 출발해서 94년 혜성라이팅으로 상호를 변경하기까지 혜성은 국내 형광등용 전자식 안정기 기술개발에 매진해온 전문 조명업체였다. 이후 KS, Q마크, GD마크, 국산 신기술(NT), EM마크, 고효율 에너지기자재 등등 국내에서 주는 각종 마크와 인증을 모두 섭렵한 혜성은 2000년 미디어사업부를 신설, CD제작에 나섰고 2002년도에는 고효율조명기기, 인버터, 냉난방 공조설비개체 등을 아이템으로 ESCO사업에 뛰어들었다. 원가경쟁력에서 타사에 비해 강점을 갖고 있다는 혜성L&M의 ESCO사업부를 찾아가 보았다.

• CDE review
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• v.1 no.1
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• pp.29-31
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• 1995

이 글에서는 1. 컴파일러 레지스턴트(Compiler-Resistant) 2. SPEC95의 세부 내용 3. 윈도우즈 NT 등에 대하여 다루고 있다.

• Journal of KIISE:Computing Practices and Letters
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• v.5 no.2
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• pp.176-184
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• 1999

지금까지의 소프트웨어 기반 분산 공유 메모리(이하 DSM이라 칭함)시스템은 유닉스 워크스테이션 클러스터를 목표로 하는 것이 대부분이었다. 그러나 현재 Windows-NT 는 서버급 시스템과 PC 모두를 위한 운영체제로서 유닉스와 더불어 널리 사용되고 있는 실정이다. 본 논문에서는 Windows-NT 워크스테이션 클러스터 환경을 위한 DSM 시스템을 구현하고, 구현된 DSM 시스템의 성능 평가 결과를 제시한다. 구현된 DSM 시스템은 Win32 API와 표준 실행-시간 라이브러리를 이용해 구현되었기 때문에 모든 Windows-NT 워크스테이션에서 실행 가능하며 , 프로그래머는 몇 라인의 코드 추가만으로 DSM 시스템 상에서 수행되는 병렬 응용 프로그램을 작성할 수 있다. 워크스테이션 간의 상호연결망으로 범용성을 위해 이더넷 LAN을 지원하였고, 아울러 성능 향상을 위해 기가비트 SAN(System Area Network)도 지원하였다. 기가비트 SAN을 위한 하드웨어로는 Dolphin 사의 PCI-SCI 타입 제품인 Clustar를 사용하였다. 우리는 성능 평가를 통해, 구현된 DSM 시스템이 정확히 동작함은 물론 확장성이 뛰어나다는 것을 확인하였다. 특히 , 기가비트 SAN을 사용할 경우 일부 병렬 벤치 마크 프로그램에서는 노드 수 증가에 따라 성능이 거의 선형적으로 향상된다는 것을 알 수 있었다. 본 논문이 기여하는 바는 Windows-NT 기반 소프트웨어 DSM 시스템의 원천 기술을 확보함으로써 향후 Windows-NT 워크스테이션 클러스터 환경에서의 분산 및 병렬 처리 연구에 도움을 줄 수 있다는 점이다.

• Bulletin of Korea Environmental Preservation Association
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• v.27 s.358
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• pp.31-33
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• 2005

산업자원부 기술표준원에서는 국내기업의 기술경쟁력 강화와 기술개발 의욕 고취를 위하여 국내에서 최초로 개발된 기술과 우수한 제품에 대하여 인증마크를 부여하고 각종 홍보, 판로, 자금 등을 지원하고 있다. 평가에 소요되는 비용(시험$\cdot$분석 수수료 포함)은 정부에서 전액 부담하며, 기술표준원 이외 기관에서 시험$\cdot$분석 의뢰 시는 신청자가 해당금액을 부담한다. 이러한 신기술(NT)$\cdot$우수품질(EM)$\cdot$ 환경설비품질(EEC) 인증제도에 대하여 간략하게 소개를 하고자 하며, 환경관련 기업체에서도 인증제도 활용에 도움이 되었으면 한다.

• Journal of Food Hygiene and Safety
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• v.31 no.2
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• pp.74-84
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• 2016

Literacy on food additives of elementary school teachers (ET) and nutrition teachers (NT) could be influential factor on safe dietary education for school children. Therefore, the perceptions and information needs on food additives were surveyed from 351 elementary school teachers and nutrition teachers in metropolitan area of Korea, and the basic data for the promotion of risk communication on food additives among them were obtained. Compared to ET who consider 'taste' (39.1%) as the most important factor while purchasing food, NT considered 'safety' (68.1%) first (p < 0.001). Among the food labelling items, the level of understanding on food additives was the lowest both in ET (3.53) and NT (4.17), and NT showed better levels of understanding overall on food labels. Both ET and NT regarded hazardous factors of food as environmental pollutants, foodborne pathogens, and food additives in order, and tended to select 'no additives' or 'no artificial color' products while purchasing processed food. Although NT answered that they know all food additives had been passed the evaluation of safety and effectiveness tests (100%) and have standards of use (81.9%), majority of them (87.5%) believed the consumption of food additives are harmful on human health. ET (75.2%) also regarded food additives as dangerous materials. Above results suggested the necessity of proper and enough risk communication for both ET and NT. Both ET and NT wanted to have information on the safety or hazard of food additives. Most preferred media to get the information on food additives was TV (3.80) among ET and lecture (3.65) among NT. ET and NT trusted hospital, research institution/universities or the personnels working in these institutions as the provider of information on food additives. The result that the trust levels of ET and NT on government were relative low suggested the weakness of risk communication in Korean government. Although ET and NT answered that they do not trust mass media, their behaviors were affected by them such as reading food labels in ET (39.4%) and reducing the consumption of food additives in NT (50%). They also indicated mass media's problem of sensitive approach on food additives and asked the urgent reaction of government by providing sound information through experts on food additives. Above results revealed that ET and NT have different perceptions and information needs on food additives, therefore, proper risk communication should be provided for them to serve as dietary educators for elementary school children.

• Journal of Life Science
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• v.20 no.3
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• pp.453-456
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• 2010

Leukemia is the abnormal increase of hematopoietic progenitor cells in tissues, resulting in anemia, increased susceptibility to infection and impaired blood clotting. The adenosine deaminase (ADA) gene is an important druggable target for the treatment of leukemia patients. Genetic and molecular analyses were performed to determine the effects of ADA gene mutations in 20 leukemia patients in the Korean population. To analyze the relationship between genotype and phenotype, the ADA genomic DNAs - including 1,092 bp of 12 exons and partial intron sequences flanking each exon - were sequenced and compared. In this study, the known mutations in other diseases, more than 50 mutations already reported in patients with severe combined immunodeficiency disease (SCID) and autism, were not found, but two novel mutations in leukemia patients were discovered. They include one nonsense mutation (A>C at nt position 478, F101F) and one missense mutation (G>A at nt position 778, E260K). One missense mutation (G>A at nt position 22, D8Y) was also detected in 20 normal control patients (allelic frequency of 7.5%). Interestingly, subjects in the Korean population retained 2 bp insertion at the intron 6 (IVS6-52insGC), something that has never been shown in other populations. The genetic study to find out the correlation between the mutant alleles and leukemia patients revealed no association statistically (p>0.05). The mutation found in leukemia needs further study to determine its possibility as a molecular marker for the diagnosis of leukemia.

• Journal of the Korean Society for Precision Engineering
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• v.20 no.6
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• pp.96-104
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• 2003

This paper presents the measurement and correction method of PCB alignment errors for PCB screen printer. Electronic equipment is getting smaller and yet must satisfy high performance standard. Therefore, there is a great demand for PCB with high density. However conventional PCB screen printer doesn't have enough accuracy to accommodate the demand for high-resolution circuit pattern and high-density mounting capacity of electronic chips. It is because the alignment errors of PCB occur when it is loaded to the screen printer. Therefore, this study focuses on the development of the system which is able to measure and correct alignment errors with high-accuracy. An automatic optical inspection part measures the PCB alignment errors using machine vision, and the high-accuracy 3-axis stage makes correction for these errors. This system used two CCD cameras to get images of two fiducial marks of PCB. The centers of fiducial marks are obtained by using moment, gradient method. The first method is calculating the centroid by using first moment of blob, and the latter method is calculating the center of the circle whose equation is obtained by curve-fitting the boundaries of fiducial mark. The operating system used to implement the whole set-up is carried in Window 98 (or NT) environment. Finally we implemented this system to PCB screen printer.