• 기술사
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• 제33권5호
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• pp.33-37
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• 2000

Now many IHTERMINGLER manufactures are under developing new types which can decrease the air consumption and at the same time can improve the efficiency of operating. The material and surface finish of yarn chamber is important factors to make INTERMINGLER. Normally ceramic material and tungsten carbide is used for yarn chamber but now chemical diffusion process for metal is widely used for material and it is very successful considering the hardness of surface.

• 기술사
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• 제38권2호
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• pp.60-63
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• 2005

Firstly, the author suggests a new term of the "Pro-Engineer's Doctrine" on every engineering work. This renewed term should be in their minds who are doing any kinds of scientific and technological works in his/her field. The term, "doctrine", is based on a wise sage, renewedly, so-called "The Way of the measuring squire(혈矩之道)" saying in one of the Oriental classics. Also, he explains here another term, "Investigation of things, attainment of knowledge(格物致知)" that is very similarity to the "Pro-Engineer's Doctrine" from the same book.

• 기술사
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• 제34권2호
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• pp.62-67
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• 2001

The grave Fengsui is a systematic life science, explained by the life energy of Yin-yang and Its five elements. The life energy of Yin-yang and its five elements, though Invisible and thus difficult to apply, Is easily conceived of as the magnetic force. When the life energy of the grave Fengsui is not understood as ambiguous moving force but as magnetic force, It is possible to open up a new field of Fengsui life culture.

• 기술사
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• 제41권3호
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• pp.24-29
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• 2008

Recently, the serious problems have been occurred due to the contaminated sites with heavy metals are increasing. There are several remediation technologies of the metal contaminated soil such as physical separation, washing with water or acid, biologically, electrically. Pytoremediation, ultrasonic etc. Among these technologies the physical separation can be put in a good option to solve the metal contaminated soil economically and environmental friendly. Because this technology has been already commercially certificated in the mineral processing field for a long time.

• 기술사
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• 제33권6호
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• pp.38-44
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• 2000

This article describes the air conditioning and control system of cabin which commertial aircrafts have adapted extensively upto now. Even though the aircrafts requires the study of the aerodynamics to produce the life in the air, most of internal system should utilize mechanical, electrical, and electronic system used on conventional appliances of industries. Therefore, all of industries are invited to pay more interest in this field aggressively and suggested to think the aircraft as a building simply moving in the sky.

• 기술사
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• 제43권2호
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• pp.53-59
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• 2010

This research is about the inspection system which is for maintenance of laterals of local RBF(River bed Filtration). Inspection system is designed for local use in order to endure water resistance up to 50m and it also can examine the internal condition and colgging of laterals by moving inside of the laterals about 100m back and forward. We will conduct performance test of inspection system at the lacal RBF site and present its result.

• 기술사
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• 제38권1호
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• pp.69-73
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• 2005

The text describes an author's column presented in a local newspaper, which includes the private warmest sentiments on the people and hometown, sending a message to try to cause the peopleinduce that project to their district, known as one of the candidates. Since in 1986, the siting work for a potential district of the RDF(Radwaste Disposal Facility) Project Center in Korea has been struggled for almost 20 years. Unfortunately, the final district could not be fixed yet. So, during last tow years, author has been personally endeavored to do all activities in concern with that work as a pioneer and experienced in that field.

• 기술사
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• 제42권6호
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• pp.53-57
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• 2009

Antenna Tracking System has been required core technology with special tracking algorithm, and it can be achieved by program tracking, step tracking, optracking, and monopulse tracking as well. Depend on tracking requirement we might be able to apply eligible tracking method in accordance with Geostationary and Inclined Orbit Satellite. Further, we should deeply consider two important factors in order to act up to customer expectation in quality and system performance including competitive price therefore we need maximized endeavor to upgrade not only tracking system performance, but reduction of product through engineering skill and R&D investment.

• 한국도서관정보학회지
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• 제46권4호
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• pp.227-244
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• 2015

이 연구에서는 대학도서관에서 장서개발 업무를 담당하고 있는 사서들의 인식을 토대로 장서개발 사서가 전문가로서 지녀야 할 전문성의 요건들을 도출하고자 하였다. 이를 위해 국내 4년제 대학도서관에서 장서개발을 담당하고 있는 8명의 사서들을 대상으로 질적 면담을 실시하였으며, 그 결과 문헌정보학 지식, 주제분야 배경지식, 그리고 사서로서의 정체성이 상위 범주로 제시되었고 그 아래 총 13개의 하위범주와 37개의 의미단위가 제시되었다. 이를 통하여 이 연구에서는 장서개발 담당 사서의 전문성에 대한 이론적인 요건과 실제 현장에서 제기하고 있는 요소들을 종합함으로써 향후 장서개발 담당 사서의 전문성 제고를 위한 교육 훈련 프로그램 구축에 기초적인 자료를 제공하고자 하였다.

• 한국수학교육학회지시리즈A:수학교육
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• 제53권3호
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• pp.357-381
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• 2014

This study analyzed the cases of three teacher communities participating in an innovative professional development program and clarified the characteristics and the process of lessons for mathematics-oriented convergence that were developed and applied during the program. Each of the teacher communities designed and implemented lessons according to the context of each community and the concept of lessons for mathematics-oriented convergence were developed and refined. The lessons developed by the three teacher communities were characterized as convergence problem posing lessons using technology, convergence of various subject content focused on mathematical concepts through team teaching, and convergence lessons according to students' achievement levels. The program contributed to teacher community activities by proving sustainable professional development in the area of convergence education, a connection between the content of their professional development and the context of the field, and opportunities for active participation in the process of developing and implementing the convergence lessons.