• Advances in Computational Design
• /
• 제4권1호
• /
• pp.43-52
• /
• 2019

Variation Analysis (VA) is used to simulate final product variation, taking into consideration part manufacturing and assembly variations. In VA, all the manufacturing and assembly processes are defined at the product design stage. Process Capability Data Bases (PCDB) provide information about measured variation from previous products and processes and allow the designer to apply this to the new product. A new challenge to this traditional approach is posed by the Industry 4.0 (I4.0) revolution, where Smart Manufacturing (SM) is applied. The manufacturing intelligence and adaptability characteristics of SM make present PCDBs obsolete. Current tolerance analysis methods, which are made for discrete assembly products, are also challenged. This paper discusses the differences expected in future factories relevant to VA, and the approaches required to meet this challenge. Current processes are mapped using I4.0 philosophy and gaps are analysed for potential approaches for tolerance analysis tools. Matching points of simulation capability and I4.0 intents are identified as opportunities. Applying conditional variations, incorporating levels of adjustability, and the un-suitability of present Monte Carlo simulation due to changed mass production characteristics, are considered as major challenges. Opportunities including predicting residual stresses in the final product and linking them to product deterioration, calculating non-dimensional performances and extending simulations for process manufactured products, such as drugs, food products etc. are additional winning aspects for next generation VA tools.

• 한국군사과학기술학회지
• /
• 제19권6호
• /
• pp.744-751
• /
• 2016

Interoperability tests are required to determine whether network-based defense systems successfully share and exchange certain services, information, and data. We must examine various aspects of interoperability. The DITA (Defense Information Technical stAndard) is the basis for interoperability. However, DITA is being applied to the defense system in a state that the standard test methods and procedures are not established. And there is no test method and procedure of the DITA well applicable to military weapons systems or information systems. Therefore, in this paper, we propose a framework that includes procedures, methodologies, so as to test whether a standard is applied to the DITA in terms of Standard Conformance Test.

• 전기학회논문지
• /
• 제63권2호
• /
• pp.297-305
• /
• 2014

Nowadays new water supply projects have been on the decline as the water-power constructions have saturated, which means that the existing power equipment have slowly aged and they require more efforts to maintain the system performance. An effective asset management method of power equipment has become a great necessity from both economical and technical aspects. To be balanced, the asset management should look into all three parts: management, engineering, and information. The purpose of this paper is to study a Risk-Based Maintenance (RBM) matrix method through the deterioration evaluation algorithm for an efficient reliability assessment of oil-immersed power transformers by considering both asset management and technical evaluation. Make use of this result, the equipment will be decided to be replace or repair otherwise on service.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2008년도 하계종합학술대회
• /
• pp.1187-1188
• /
• 2008

An area of research called evolvable hardware has recently emerged which combines aspects of evolutionary computation with hardware design and synthesis. Evolvable hardware (EHW) is hardware that can change its own circuit structure by genetic learning to achieve maximum adaptation to the environment. In conventional EHW, the learning is executed by software on a computer. In this paper, we have studied and surveyed a gate-level evolvable hardware chip, by integrating both GA hardware and reconfigurable hardware within a single LSI chip. The chip consists of genetic algorithm(GA) hardware, reconfigurable hardware logic, and the control logic. In this paper, we describe the architecture, functions of the chip.

• 대한안전경영과학회지
• /
• 제13권1호
• /
• pp.31-39
• /
• 2011

In this study, supervision resides fire mission against problems associated with case studies and surveys done through the side of the field work, technical personnel, fire management, including fire code aspects classified into three kinds of items dealt with the issue. Started at the scene of the problem in terms of performance, the issue of the construction process, mainly dealt with the issue at the time of completion. Fire management side, supervisor of technical personnel, human resources management issues, contract issues, fire code level, the frequent revisions of fire regulations, supervision, processing delays of the resulting report, the problem resides with the expansion of Fire Supervision target was mentioned. Finally, the target for each hierarchical supervision, and resident supervisor of the need for supervision of work performance test was carried out by the correlation.

• 정보관리연구
• /
• 제25권4호
• /
• pp.36-55
• /
• 1994

본 연구는 도서관과 정보(情報)센터에서 CD-ROM 제품을 수집하는 데 필요한 평가기준을 종합적으로 고찰한 것이다. 번 연구에서는 지금까지 많은 연구에서 논의된 CD-ROM 제품 평가 기준을 관리적인 면과 기술적인 면으로 구분하였고, 기술적인 면에서는 탐색(探索) 소프트웨어와 이용자 인터페이스 범주로 세분하여 각각의 기준들을 살펴보았다. 부록(附錄)으로 CD-ROM 제품 평가에 필요한 기본적인 체크리스트를 제시하였다.

• 한국수소및신에너지학회논문집
• /
• 제33권6호
• /
• pp.674-683
• /
• 2022

In this study, we examined the case of Fukushima Hydrogen Research Field (FH2R) Namie hydrogen town. We found that the case has three aspects of socio-technical experiment: a living-scale test-bed of hydrogen technologies, activities for enhancing social acceptability, and a designed module for policy transfer to diffuse. This study aims to provide a benchmark for planning a green hydrogen city in near future.

• 건축역사연구
• /
• 제7권4호
• /
• pp.77-91
• /
• 1998

The theory of tectonic appeared in the midst of 19th century as German architects adopted new materials and structural technology, invented by creative engineers, into architectural design. This does not merely mean a technical problem but concern the redefinition of architecture in term of an aesthetic, cultural, and ontological identity. Furthermore it alluded to a desire on the part of architectural theorists to actualize artistic and spiritual goals out of new constructional necessities. Because of their complex discourse that assumed the possibility of communication between philosophical and technical aspects, between ideal and real concerns, tectonics becomes until now the most important issue in architecture. The concept of tectonic was intensively investigated by Gottfried Semper's and Karl B$\ddot{o}$tticher architectural writings. They contributed to clarify the principle aspects of tectonic within architectural, philosophical, and anthropological discourses of 19th century. Gottfried Semper stressed an understanding of how architecture took on physical form in earliest human culture. He placed great importance on the artistic expression of materials. But unlike Semper who argued the cladding of the structural frame by decorative wall system, Karl Botticher required maximum visibility of structural frame. This represents the different positions between Gottfried Semper and Karl Botticher

• 복식
• /
• 제61권9호
• /
• pp.131-147
• /
• 2011

This study puts the significance on the trends, the characteristics, the factors and background of the typical diversification of 2000's historical dramas and of their costume in conjunction with the popular culture. We analyzed the materials like the official web-sites, the articles and promotional photos based on 47 TV historical dramas and 21 historical movies. And we, approaching the characteristics of popular culture in connection with the social, cultural, economic, emotional and technical aspects, considered the trends of the historical dramas and their connection with the paradigms of the contemporary popular culture. The results of this analysis are summarized as follows. First, the 2000's historical dramas & their costume, in the process to widen communication with the public, rose the values of popular culture, economic values, traditional values. Second, the diversification of the costumes in historical dramas, derived from the diversification of the era Genre characters and this is related to the characteristics of popular culture in 2000's such as the diversity, the nature of mixture, flexibility and the orientation of variation. Third, the new media environment and the imaging technology of 2000's raised completeness of the historical dramas and their costume. As the technical background placed the emphasis on realistic representation. Fourth, the costume of historical dramas in 2000's reflected the intention of the production in consideration with the emotional aspects of popular culture.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권13호
• /
• pp.5111-5116
• /
• 2014

Computed Tomography Colonography (CTC) is a medical imaging technology used in identifying polyps and colon cancer masses in the large intestine. The technique has evolved a great deal since its invention and has become a routine diagnostic procedure in Western countries due to its non invasiveness and ease of use. The objective of our study was to explore the possibility of CTC application in Indian hospitals. This paper gives an overview of the procedure and its commercial viability. The explanation begins with the domain aspects from gastroenterologist perspective, the new way of thinking in polyp classification, the technical components of CTC procedure, and how engineering solutions have helped clinicians in solving the complexities involved in colon diagnosis. The colon cancer statistics in India and the results of single institution study we carried out with retrospective data is explained. By considering the increasing number of patients developing colon malignancies, the practicality of CTC in Indian hospitals is discussed. This paper does not reveal any technical aspects (algorithms) of engineering solutions implemented in CTC.