• Title/Summary/Keyword: Design Changes

Search Result 6,446, Processing Time 0.034 seconds

On Coping with the Design Change Request by Utilizing DB Traceability in the Operational Phase of Safety-critical Weapon Systems (운영단계 안전중시시스템에서 제기되는 설계변경요구에 대해 아키텍처 DB의 추적성을 통한 변경프로세스의 개선)

  • Kim, Young Min;Lee, Jae-Chon
    • Journal of the Korea Safety Management & Science
    • /
    • v.16 no.1
    • /
    • pp.69-77
    • /
    • 2014
  • The environment and requirements of modern war fields have been affected and thus changed by a variety of issues. To this end, the development of safety-critical weapon systems frequently need to meet those changes even in the operational phase. The necessity of the changes may be due to the preparation for mass-production or the request originated from the user military forces. To meet such a need can be even tougher in the development of safety-critical weapon systems since the integration of the requirements for both systems design and systems safety would make it troublesome. To handel the matter in this paper, utilization of architecture DB is proposed. Specifically, the situation in demand has first been analyzed and then a problem-solving process to accommodate the design changes has been constructed. In doing so, the concept of the aforementioned integration is particularly focused on the functional architecture, which could be a core concept of our approach to solving the problem. The result of a case study demonstrating the method studied using a computer-aided systems engineering tool is also presented.

A Study on the Business Plan Changes of Housing Complex evaluated by the "Housing Performance Grading Indication System" (주택성능등급표시제도의 개선을 위한 인정 단지의 사업계획변경 현황에 대한 실태조사 연구)

  • Lee, Sung-Ok;Bae, Cheol-Hak
    • KIEAE Journal
    • /
    • v.11 no.6
    • /
    • pp.43-51
    • /
    • 2011
  • This study aims to analyze on the change status in the project plan of the housing complex as evaluated through the Housing Performance Grading Indication System. This a a system for assessing quantitatively the comprehensive, unified performance of housing by an objective standard from the design stage since January 9, 2006. As housing is a composite with various performances, it is required necessary to objectively assess the various performances from the design stage for building better housing. Thus, this study analyzed the change status and objectively described objectively it centering on the construction and structure drawings for 12 items posted in the Facility Management System_(FMS) out of examples recognized by 2011 since the implementation of the system. The changes were analyzed though observing each performance item-specific characteristics and confirming the books approved for use. In various parts, such as the site area, landscape plan, plane plan for unit, supplementary welfare facility plan, finishing materials, window size and location, the project plan was changed. These changes may result in a grading change in of the performance items of the system. This study purpose is for it to be used as a basic resource required for future system development by supplementing the limitation of the design phase and then through playing a basic role for the assessment after completion.

A Study on Dynamic Valve Characteristics of Regulators in Hydraulic Winches According to Design Parameters (선박용 유압윈치용 레귤레이터의 설계 파라미터 변화에 따른 밸브 거동 특성 연구)

  • Jeong, Yoo Seong;Chung, Won Jee;Noh, Ki Tae;Lee, Jung Min;Choi, Jong Kap;Jeong, Young Wook
    • Journal of the Korean Society of Manufacturing Technology Engineers
    • /
    • v.26 no.2
    • /
    • pp.214-222
    • /
    • 2017
  • Maritime deck machinery relies heavily on the importation of components produced by overseas companies. Our research defines design parameters for hydraulic winch regulators used in maritime deck machinery. Using Amesim, we were able to conduct 1D modeling, and utilizing CFS then enabled us to create 3D models. These models were analyzed in our research for changes in pressure on each port that resulted from the regulator's spring constant and changes in the primary tension-compression field. Our research then analyzed alterations in traits caused by changes in the length of overlap between the spool and sleeve. Last but not least, our research analyzed the trait alteration resulting from changing the interval between the spool and sleeve. We believe the results of our research can be used to design a hydraulic winch regulator used in maritime deck machinery that does not require importation.

A Study on Changes in Appendage Design for Improvement of Dynamic Stability of Manta-type Unmanned Undersea Vehicle (Manta형 무인잠수정의 동안정성 향상을 위한 부가물의 설계 변경에 관한 연구)

  • Bae, Jun-Young;Sohn, Kyoung-Ho;Kwon, Hyeong-Ki;Lee, Seung-Keon
    • Journal of the Society of Naval Architects of Korea
    • /
    • v.44 no.3 s.153
    • /
    • pp.323-331
    • /
    • 2007
  • Proposed Manta-type Unmanned Undersea Vehicle(UUV) turned out to have the tendency of dynamic instability in vertical plane, and moreover to have that of so strong dynamic stability in horizontal plane as to cause another problem in turning motion due to negative value of sway damping lever. The authors discussed the changes in appendage design for improvement of dynamic stability of UUV in vertical and horizontal planes. As a result, the dynamic stability in vertical plane was improved by increasing the area of horizontal stern planes. and the dynamic stability in horizontal plane was also improved by removal of lower vertical plate and by adjusting the area and position of upper vertical plate simultaneously.

A Study on Design of Ontologies-Driven Design of Context-based Historical-Cultural of U-Service in U-City (U-City에 있어서 U-Service의 콘텍스트 기반 역사문화 온톨로지 설계 관한 연구)

  • Kwon, Chang-Hee
    • Journal of Digital Convergence
    • /
    • v.9 no.6
    • /
    • pp.379-387
    • /
    • 2011
  • Historical-cultural contents are digitized documents of records or evidences about changes of human society. The changes or evolvements are results of the interaction between society and environment. So the different feafures are appears by spatio-temporal observing locations Historical-cultural contents need to be designed so that the preservation and exchange of information, adaptation to changes of the future are easy. So historical-cultural contents have structured to support the intelligent services based on context. This study propose context-based ontology-design method based on events, and we implemented web services of Bible contents by proposed method.

A Study on the Visual Evaluation According to Changes in Width of Hem Line and Waistline Position of Flare Pants (플레어 팬츠의 바지부리 폭과 허리선 위치의 변화에 따른 시각적 평가)

  • Lee, Jung-Soon
    • Journal of the Korea Fashion and Costume Design Association
    • /
    • v.14 no.4
    • /
    • pp.127-137
    • /
    • 2012
  • The purpose of this study is to recognize the differences of visual evaluation by variations in width of hem line and waistline position of the flare pants. The stimuli are 9 samples: One control group, 3 variations of the width of hem line and 3 variations of the waistline position. The data has been obtained from 44 fashion students. The data has been analyzed by Factor Analysis, Anova, Scheffe's Test and the MCA method. The results of the study are as follows: The visual evaluation by the width of hem line and waistline position of flare pants are composed of 5 factors : physical characteristics, elegance, originality, comfort, and stiffness. Among these factors, the physical characteristic is evaluated to be the most important factor. As a v isual evaluation result o f changes in the width o f hern l ine, 8 4 cm in width (the narrowest width) was highly evaluated in physical characteristics, elegance, and originality factors. For the result of changes in the waistline position, high-waisted flare pants were highly effective in physical characteristics, and also evaluated well in elegance, originality and stiffness factors. The flare pants did not show any interaction between the width of hem line and waistline position. The waistline position had more influence on visual evaluation in physical characteristics, originality and comfort factors while elegance and stiffness factors were affected by the width of hem line.

  • PDF

A Study on the Planning and Design of Corporate Training Centers in the Information Technology Era (정보화시대(情報化時代) 업무환경변화(業務環境變化)에 따른 기업연수원(企業硏修院) 계획(計劃)에 관(關)한 연구(硏究))

  • Reigh, Young-Bum
    • Journal of the Korean Institute of Educational Facilities
    • /
    • v.9 no.3
    • /
    • pp.23-34
    • /
    • 2002
  • This paper is to analyse the major impact of the new era of information technology on the changes being made in physical environment of existing corporate training centers through the case of on- and off-line LG academies. By the analysis, some interesting features are to be found which can be a hint for the future planning and design of corporate training centers. Unlike the expectation in the early stage of changes, the rapid growth of on-line education forms a very strong partnership with the existing in-house training programs at all levels. Understanding of such key issues surrounding the use of facilities is specific to the formation of an effective environment for training programmes. After all aspects of the facility uses-not just the class rooms, but also the residential, dining, recreational, and support areas, as well as on-line type of educational services-are carefully examined, a design guideline is identified as considerations for guestrooms, classrooms, public facilities, the recreational areas, and the audio-visual provisions.

A Study on the Effect of the Changes in Temporary Exhibition Spaces of Korea's National and Public Museums on the Overall Space Structure of Museum - With Reference to Syntactic Relationship between the Most Integrated Space and Exhibition Space - (국내 국.공립 박물관 기획전시공간의 변화가 전체공간구조에 미치는 영향에 관한 연구 - 뮤지엄내 위상 중심공간과 기획전시실공간의 관계를 중심으로 -)

  • Kang, Hyun-Ji;Moon, Jung-Mook
    • Korean Institute of Interior Design Journal
    • /
    • v.21 no.1
    • /
    • pp.203-210
    • /
    • 2012
  • Since a private museums started in Europe 17C, many private museums established for high-class people like aristocrats to collect and to keep art works and to appreciate for limited members. After the French Revolution in 18C, the publicity became an important social issue through all European regions, and the museum gradually changed into public ones. Like that, as the concept of museum changed, its social role as well as its function was also changed. The concept of collection and display or preservation changed into the concept of exhibition and appreciation featuring the publicity. With the year-round exhibition, a classical concept, the planned-exhibition, a new active concept set as an important factor for a museum's projects. The latter concept embraces new social issues. Therefore as the space for planned-exhibitions reflecting social issues every season was needed, a museum sets its planned-exhibition space with the changeability, and gradually expands this kind of space in size. It is expected that planned-exhibition spaces characterized as the changeability may give some changes on the flow of a museum's overall space, and may have substantial influences on the flow. To recognize the changes in a planned-exhibition space's influence on the museum, this study selected some national, public museums having the planned-exhibition space, and investigated their influences on each museum's overall space structure through the analysis on space syntax. This study assumed the change of planned-exhibition space as the changes in the number of convex spaces, and measured it. And to understand the planned-exhibition's changes on a museum's overall spaces, such changed assumed as the numeric changes in convex spaces and measured them. In addition, the numeric changes's influence on the overall space structure was analyzed by measuring the overall space's average integration level. Through the above two factors, the 3 research methodologies and analyzed results were drawn out.

  • PDF

A Study on the Seasonal Changes of Hair Color - Centered on 2003 $\sim$ 6' hair color trends published on women's magazines - (계절(季節)에 따른 헤어컬러 변화(變化)에 관(關)한 연구(硏究) - 2003 $\sim$ 6년 여성잡지(女性雜誌)에 나타난 헤어컬러 트렌드를 중심(中心)으로-)

  • An, Hyeon-Kyeong
    • Journal of Fashion Business
    • /
    • v.11 no.1
    • /
    • pp.1-14
    • /
    • 2007
  • This study was aimed at giving help to the people intending to change their own hair color design and also providing the guide line to the cosmetic circles for developing new hair color design and promoting sales by statistically analyzing seasonal changes of hair colors puplished on women's magazines(Vogue Korea, Estetica Korea, Woman Chosun, Ce.ci) from 2003 to 2006. The researching methods were as follows; (1) hair colors published on women's magazines from september 2003 to August 2006 were measured by N.C.S. color reader(4 magazines $\times$10 main hair colors/magazine $\times$ 12 months $\times$ 3 years = 1,440 colors). (2) N.C.S. tone is made of percentage, so measured values and chromas were statistically analyzed by mean, standard deviation, and seasonal deferences were statistically analyzed by t-test and specified on high significant values. But hues were not made of percentage, so these were statistically analyzed by cross tabulation analysis, $x^2$ -test and specified on high significant values. These all had been analyzed by SPSS program(ver. 11.0). The results were as follows; (1) Usually seasonal changes of hair values were significant, specially in foreign licensed magazines, and bright values appeared in S/S and dark values in F/W. (2) Seasonal changes of hair hues were significant only on foreign women's magazines. Therefore seasonal changes of korean hair colors were not significant compared by foreign hair colors because of hardness of color changes of dark black hair and hair damages by hair tints and bleaches and trends of well being and hair care. But hair color changes have been developed gradually and will developed furthermore. So korean hair cosmetic circles have to present hair color trends deferenciated by seasons. And S/S hair values have to be brignt and F/W have to be dark. And new seasonal hair hues matched by korean have to be developed and presented.

About the Influence of the Molecular Structure of selected classes of small molecules on their thermal behavior

  • Richter, Andreas M.;Lischewski, Volker;Felicetti, M.
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 2004.08a
    • /
    • pp.812-815
    • /
    • 2004
  • The molecular structure influences the thermal behavior of HTM. For OLED the glass transition temperature and evaporation temperature are critical. We report how changes in structure cause changes on both parameters. The results may be of interest for chemists when they design new molecule structures for OLED.

  • PDF