• The Microorganisms and Industry
• /
• v.10 no.1
• /
• pp.17-29
• /
• 1978

본논에서는 그 많은 미생물의 공업적 이용에서 산업폐수 처리법의 일부분을 발췌해서 논해 볼까 한다. 즉, 생물학적 폐수처리법 중에서 활성오니법을 미생물의 먹이 과정을 더듬어서 살펴보는 정도로 논하자는 것이다. 물론, 활성오니 그자체 만 논하더라도 본지면으로는 감당할 수 없을 정도로 깊고 방대한 내용이 될 것이다. 그러나 우리나라에서는 아직도 수처리 분야에 종사하는 소수의 기술자를 제외한 대부분의 현장처들이 활성오니처리법에 대해서는 생소하기 때문에 본론에서 간력하나마 개론적으로 다듬어서 수처리에 관심 있는 분들에게 활성오니를 소개하자는 것이다.

• 전기의세계
• /
• v.23 no.1
• /
• pp.46-48
• /
• 1974

회로망정리에는 Kirchhoff의 법칙을 바탕으로 한 Tellegen의 정리[T-1]를 비롯하여 치환정리, 중첩정리, Thevenin-Norton의 정리 및 상반정리 등이 있다. 이들 제정리들은 실제 우리 전기공학자 및 기술자들이 실제문제 또는 현장에서 작업하는 과정에서 자주 부딛치게 되는 각종 회로망이 광범위하게 적용될 수 있을 뿐만 아나라, 그 결론이 매우 간단하므로 그 유용성은 매우 크다. 그러나 이들 제정리들이 지니고 있는 일반성과 간이성을 잘못 인식하여, 실제 응용에서 맛볼 수 있는 통쾌감을 제대로 느끼지 못하는 사람들이 비교적 많다. 본 해설에서는 상기한 제정리중 비교적 최근에 발표된 (1952년) Tellegen의 정리에 대하여 설명하며, 이 정리가 어떻게 유용하게 이용될 수 있는가를 보기를 통하여 설명하고저 한다.

• Proceedings of the Costume Culture Conference
• /
• 2003.09a
• /
• pp.61-62
• /
• 2003

최근 경기부진에 따른 고용악화로 실업이 늘고, 고학력자들과 청년실업의 문제는 심각한 사회문제로까지 부각되는 반면, 기업측면에서 보면 우수 인력자들의 부족 현상 또한 심각한 고용문제로 대두되고 있다. 따라서 국내 패션관련 학과에서는 우수한 패션디자이너와 기술자를 양성하는 산학협동 교육시스템을 운영하여 패션산업 현장에서 필요한 우수 전문인력을 양성하고, 산학공동협력 프로그램을 활성화하고 산학교류를 확대하여 졸업생들의 취업률을 향상시키고자 하는 움직임이 일고 있다. (중략)

• Computational Structural Engineering
• /
• v.12 no.1
• /
• pp.95-114
• /
• 1999

본 기사는 미국 토목학회(ASCE) 논문집 Journal of Structural Engineering의 1998년 7월호(Vol. 124, No. 7)에 게재된 Aktandhl 3인의 논문을 중심으로 관련된 논문들을 정리한 번역기사이다. 국내·외적으로 대형구조물의 손상도 검색, 노후화 진단, 잔류수명 추정 및 안전도 평가를 위해 구조식별(Structural Identification)기법을 응용하는 연구들이 활발하다. 본 논문은 구조식별에 대한 실험적-경험적인 접근법과 이론적 접근법을 함께 통합적으로 다루고 있는 논문으로서, 국내의 관련 연구자들과 현장의 기술자들의 구조식별기법 및 적용방법에 대한 이해를 돕기위해 선정되었다.

• 월간 기계설비
• /
• s.223
• /
• pp.47-57
• /
• 2009

건설산업기본법 시행령 시행규칙이 개정, 2008년 12월 31일 공포되었다. 이번에 개정된 건산법 시행령은 ${\bullet}$원도급자의 공사금액 조종사유 통보 내용과 절차 구체화 ${\bullet}$소규모 공사의 건설기술자 중복배치 허용 현장 수 확대, 건산법 시행규칙은 ${\bullet}$건설공사 하도급계약통보서 및 건설공사대장에 4대 보험료 등의 내용 명시 ${\bullet}$건설업 양도 공고절차 간소화 등의 내용이 개정되었다. 개정된 건산법 시행령은 오는 7월 1일부터, 시행규칙은 오는 4월 1일로부터 시행된다.

• The Journal of the Convergence on Culture Technology
• /
• v.5 no.1
• /
• pp.457-467
• /
• 2019

In recent years, various methods have been attempted to visually manage the construction site efficiently, and in particular, there has been a tendency to use a UAV or a drone in the air rather than a land on a construction site, Can be visually photographed and recorded or analyzed. In this study, the unmanned aerial photographs were taken at least three times and the USN sensors were simultaneously operated on the main structure at the time of shooting, The goal of this research was to make the image information and environmental information of the construction site available for efficient construction management by matching. As a result, not only professional engineers at construction sites but also administrative managers can visually confirm the detailed situation of the site at the time of the construction site and the completion status, and can help decision making in appropriate budget input and appropriate resource support The experts in each field discussed the safety management of the construction site, the prevention of disaster and various factors of change which can be changed by natural environment factors.

• Korean Journal of Construction Engineering and Management
• /
• v.8 no.5
• /
• pp.161-172
• /
• 2007

By prosperous condition of construction economy in the early 90s in Korea, the government needed a lot of the qualified professional engineers (PE) to manage the construction site. In order to meet the high demand of P.E., Government has established the admitted engineer systems(AES) in 1995 that give the authority of principal engineers to the admitted engineers who do not take the written examination but have equivalent working experience. Since 2000, professional $engineer^{\circ}{\phi}s$ shortage has been resolved. however, the opposite situation, which is serious over-supply of construction engineers has occurred. Thus, Government announced that would abolish the admitted engineer systems as recognized the existent admitted engineers(about 1,000,000 persons) from 2007. However, Professional Engineers Institution has strongly insisted that Government should not recognize existent admitted engineers. From this point of view, it is critical to make the supply-demand forecast systems as a derivative approach of System Dynamics also, that is useful in comparing the argument between Government and Professional Engineers Institution. This paper describes about principal $engineer^{\circ}{\phi}s$ supply change by admitted engineer system abrogation and suggests the idea to regulate the supply and demand with the improvement of the regal system.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.21 no.5
• /
• pp.99-105
• /
• 2007

This paper describes the investigation on the spot in relation to electrical safety of electrical installation in elementary middle high school. The investigation was carried out for power receiving system, classroom, chemistry room, music hall and so on. The investigation on the spot was performed by researcher, the related expert, engineer with over fifteen years of industry experience all over the country. As a result of investigation on the spot to 41 schools, common grounding methods at power receiving system were dominant. The risk factors include absence of control box of electric fan, non-installation of earth leakage circuit breaker to power source of experiment stand, use of non-grounding outlet.

• Journal of the Korea Institute of Building Construction
• /
• v.10 no.5
• /
• pp.87-94
• /
• 2010

Construction projects are based on the actual field, so if the construction schedule that is established in the construction plan is delayed or extended for various reasons, construction companies are vulnerable to claims, and thus strive to complete a building within the planned timeline by shortening the construction time. Therefore, this study surveyed technicians in apartment construction in Gwangju, and studied their perceptions of the actual conditions of process control, construction time needs, goals, and methods. The results showed that the organization of the process control department and professional employees was lacking compared to other regions. The need for construction time was perceived as high, while the reduction of the construction cost was perceived as low. Regarding the reduction goal, they perceived highly the preparation for the delay of construction time and various claims, and for the reduction method, they mentioned the extension of working hours and the increase in employees. Based on the results of this study, technicians should consider that a reduction of construction time not only can make up for a delay in construction, but is also closely related to improvements in production through reduction of cost, and increased international competitiveness.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.12 no.7
• /
• pp.3287-3295
• /
• 2011

Currently in construction Soil-cement Injected Precast pile of buried pile method are in wide use. But deterioration in pile quality and faulty construction can be often found these days because of problems arise in the construction field. For this study, survey was carried out by targeting construction engineers working in the field in order to identify the types and the causes of problems arise based on SIP(Soil-cement Injected Precast) method. By analyzing the causes of problems arise, countermeasures could be presented. The data and the analysis presented in the study could be effectively used for minimizing problems arise in future during SIP method construction.