• 한국건축시공학회지
• /
• 제3권4호
• /
• pp.95-102
• /
• 2003

A construction project's period is limited by the order manufacture. And a construction project is requested a specific place, and has the characteristic to be irregular. Today, construction is to be representative high-cost and low-efficiency. This kind of problems appears in small construction projects more often than large construction projects. According to this facts, we recognized necessity of making practical application in methods of construction management. Also, we suggest application and establishment of integrated responsibility management department, PMIS(Project Management Information System) and Data Base. From now on, methods of construction management could be good opportunities for small construction projects and local construction companies. Therefore, small and local construction companies should try to improve their abilities. Likewise, the countries systematize to constitute the relation laws.

• 무역상무연구
• /
• 제25권
• /
• pp.243-266
• /
• 2005

Product liability is becoming a real issue to exporters, manufacturers world wide. The purpose of this study is to examine the product liability of Korean exporters, manufacturers, etc. under Product Liability Laws and Regulations of China. For this purpose, firstly we deal with the Product Liability Laws and Regulations of China. Secondly we analyze the case study concerning the Product Liability in China. From the analysis of case study, Korean exporters, manufacturers, etc. are required to pay close attention to the following : the correspondence of English with Chinese in the warning phrases, the possibility of application of strict global standard in case of existence of product liability, the proper treatment of evidence in the process of litigation, the application of strict liability and the shift of responsibility for evidence on to a defendant, the observance of procedures prescribed by the country in design and manufacture of the product, the manufacture of product to come up to country standard in quality, the consideration of diverse expression in the preparation of warning sign, the importance of quality control and inspection system in case of local procurement of parts and raw materials, Finally, this paper contributes to help the Korean Exporters, Manufacturers, etc. to build up the proper countermeasures regarding product liability under the product liability regulations of China.

• Structural Engineering and Mechanics
• /
• 제67권1호
• /
• pp.87-91
• /
• 2018

Concrete is the most widely used building material all over the world, because of its many technical and economic qualities. This pressure on the concrete resource causes an intensive exploitation of the quarries of aggregates, which results in a exhaustion of these and environmental problems. That is why recycling and valorization of materials are considered as future solutions, to fill the deficit between production and consumption and to protect the environment. This study is part of the valorization process of local materials, which aims to reuse marble waste as fine aggregate (excess loads of marble waste exposed to bad weather conditions) available in the marble quarry of Fil-fila (Skikda, East of Algeria) in the manufacture of self-compacting concretes. It consists of introducing the marble waste as sand into the self-compacting concrete formulation, with variable percentages (25%, 50%, 75% and 100%) and to study the development of its properties both in fresh state (air content, density, slump flow, V-funnel, L-box and sieve stability) as well as the hardened one (compressive strength and flexural strength). The results obtained showed us that marble wastes can be used as sand in the manufacture of self compacting concretes.

• Bulletin of the Korean Chemical Society
• /
• 제28권3호
• /
• pp.397-402
• /
• 2007

Restenosis after percutaneous coronary intervention (PCI) continues to be a serious problem in clinical cardiology. To solve this problem, drug eluting stents (DES) with antiproliferative agents have been developed. Variable local drug delivery systems in the context of stenting require the development of stent manufacture, drug pharmacology and coating technology. We have worked on a system that integrates electrophoretic deposition (EPD) technology with the polymeric nanoparticles in DES for local drug delivery and a controlled release system. The surface morphology and drug loading amount of DES by EPD have been investigated under different operational conditions, such as operation time, voltage and the composition of media. We prepared poly-D,L-lactide-co-glycolic acid (PLGA) nanoparticles embedded with curcumin, which was done by a modified spontaneous emulsification method and used polyacrylic acid (PAA) as a surfactant because its carboxylic group contribute negative charge to the surface of CPNPs (?53.5 ± 5.8 mV). In the process of ‘trial and error' endeavors, we found that it is easy to control the drug loading amount deposited onto the stent while keeping uniform surface morphology. Accordingly, stent coating by EPD has a wide application to the modification of DES using various kinds of nanoparticles and drugs.

• 디자인학연구
• /
• 제19권1호
• /
• pp.27-38
• /
• 2006

현재 일본의 각 자치체에서는 지역주민에게 만족도를 최대화하기 위한 방안으로 유니버설디자인 정책의 도입이 활발히 전개되고 있다. 본 연구는 자치단체가 유니버설디자인을 정책에 도입하게 된 배경과 각 자치체에서 추진되고 있는 시책들을 조사하고 그 추진요건 등에 대해 제시한 것이다. 자치체에서 UD 추진의 필요성을 종합하면 지방시대의 정착과 그 내실화를 추진해가는 과정에 있어서 다양한 문제를 안고 있으나, 사회 및 경제적 배경으로는 저출산화 현상과 고령사회의 진행, 사회 경제의 성숙화에 의한 가치관의 다양화 등을 꼽을 수 있다. 사람들의 가치관은 경제지상주의에서 탈피하여 물질적인 만족만이 아닌 문화, 환경, 예술 등이 경제 이상의 선상에서 존중하고 생활의 질적 향상이 중요시되고 있다. 그러한 가운데 보다 많은 사용자에게 사용이 편리한 디자인이라는 개념으로 대두된 유니버설디자인은 21세기 디자인의 기본 컨셉으로 주목받게 이르렀다. 오늘날 일본의 각 자치체에서는 홈페이지, UD 지침과 연구보고서, 각종 워크숍 등의 방법을 통해 지역 커뮤니티에 UD의 자연스러운 도입과 적용을 위해 다양한 노력을 경주하고 있다. 특히 공통적 시책 내용으로는 공공 공간 및 설비의 유니버설디자인 정책 및 기타제품 제조에 있어서의 유니버설디자인 정책, 정보에 있어서의 유니버설디자인 정책 등이 있다. 유니버설디자인 정책의 시행은 1) 사업의 기획 조정 정책입안 결정의 과정 2) 시책의 실시 과정 3) 모든 과정과 결과의 검증 과정이라는 프로세스를 중요시하며, 각 요소에는 행정과 지역주민 시민단체, 기업 등 3자의 고른 역할참여가 불가결함을 알 수 있다.

• 대한인간공학회:학술대회논문집
• /
• 대한인간공학회 1995년도 춘계학술대회논문집
• /
• pp.106-110
• /
• 1995

A local manufacturing companyin which low back pain(LBP) complaints were frequently reported was selected, and regularly perfomed lifting tasks were investigated using questionnaires and the 1991 NIOSH lifting guide. Among several processes of manufacture in the company, three processes-forming, heating and packing-were studied, where most of tasks were perfomed through manual materials handling (MMH). Questionnaire surveys showed that anthropometric data such as stature, weight and someatotype did not affect and weight of load influenced significantly the incidence of LBP, and workers who expwrienced LBP was older than the inexperienced. In addition, safety education conducted at the company was found to be ineffective in preventing LBP injuries. Lifting indexes(LI) was ranged from 0.86 to 17.0 with an average of 4.49, which revealed that tasks performing in the selected factory were in danger of LBP, and should be ertonomically redesigned. The critical factor reducing LI was found to be the horizontal component in all three processes, and most of weight of load was heavier than load constant(23kg) of the 1991 NIOSH lifting equation in heating process and packing.

• 한국컴퓨터정보학회:학술대회논문집
• /
• 한국컴퓨터정보학회 2008년도 제39차 동계학술발표논문집 16권2호
• /
• pp.129-134
• /
• 2009

본 연구에서는 모니터링 정보의 생성, 처리, 분산 및 표현에 수반되는 사양을 정형화된 주석으로 표현하여 구현이 함께 이루어질 수 있는 하나의 자동 코드 생성 알고리즘을 제안하는데 있다. 일반적인 패러다임은 언어 및 사양 독립적이지만, 제안되는 패러다임은 모니터링 지향 프로그래밍 영역에 속하는 것으로 하나의 프로타입 형태의 모니터링 지향 환경이 구현되고 제안된다. 입력으로 하나의 공식을 취하는 프로그램을 제공하는 방식으로 모니터링 지향 프로그래밍 환경에 대한 새로운 로직을 추가하고 미리 정의된 서식으로 출력이 이루어지도록 하는데 있다.

• 한국복합재료학회:학술대회논문집
• /
• 한국복합재료학회 2002년도 추계학술발표대회 논문집
• /
• pp.193-197
• /
• 2002

Polyurethane casting wing fairings included in F-5E/F 15% spar kit are to be installed on aircraft wing surfaces and used for compensating the changes of the aerodynamic configuration by the leading edge extension fairings. These fairing are mandatory items in repairing wing areas and was imported from foreign supplier with long term delivery and high cost. Accordingly, local manufacturing is necessary to get rid of above disadvantages such as long term delivery and high cost. Basic properties test of specimen to be developed and part's requirements after localization was taken and its values were similar or higher when comparing with the original's even in low temp test at -55C. Casting mold process was used to manufacture the polyurethane fairings and its demensional stability ＆ physical condition was proper and met to the related specification and drawing's requirements

• 한국CDE학회논문집
• /
• 제21권3호
• /
• pp.215-223
• /
• 2016

The low price around 1000 USD makes consumer 3D printers as a new additive manufacturing platform for the personal manufacturing where consumers can make and sell their own products. To allow the consumers to design and manufacture their products, not only economic 3D printers but also supporting information systems for their design and manufacturing are essential. This study suggests an extended product data management (PDM) system that can support both the design and manufacturing of personal products with consumer 3D printing services. This extended PDM system helps consumer designers use advanced PDM technologies for their design and connected 3D printing services with Internet of Things (IoT) technology for realization of their products. As a result, the proposed system supports the consumer designers a seamless integrated product development and manufacturing environment supported by PDM and consumer 3D printing services.

• 한국기계가공학회지
• /
• 제11권4호
• /
• pp.39-45
• /
• 2012

In this paper, process conditions are investigated for elimination of the grain coarsening and improved material flow during forging process by both of experiments and FEM analysis. Particular interest has been given to understand role of preform shape on the grain coarsening behavior and magnitude of the hammer forging load. As the results of FEM simulation by using DEFORM-3D, the simulated forging loads were 2,200ton in the case of a machined bar which is machined from 65mm to 60mm diameter, and below 1,900ton in the case of machined preform, respectively. The use of preform has been beneficial for reduction of the forging load and elimination of the grain coarsening. However, in the case of as received bar and the round bar, which was machined to 2.5mm thickness in surface layer, some degree of local grain coarsening behavior has been observed. The optimized preform shape could be properly designed by applying the FEM simulation.