• Title/Summary/Keyword: Design of Critical Items

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An Evaluation of the Tolerance of the Static Characteristics for Light Weight Torpedoes (경어뢰의 정특성 허용오차 산정)

  • 나영인
    • Journal of the Korea Institute of Military Science and Technology
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    • v.5 no.2
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    • pp.149-158
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    • 2002
  • Static Characteristics of the system, such as weight, center of gravity etc., are inspected and regulated through the whole design process of a light weight torpedo system, and the nominal condition of the characteristics is prescribed for standardization of manufacturing and fabrication. It is possible that a real system or assembled system has different static characteristics from that of the nominal condition. It is required to evaluate the tolerance of the static characteristics within which the performance of the system should not be contaminated by the static characteristics. In this paper, an evaluation method of the tolerance is described for light weight torpedo systems. The method is to check on the performance and related critical parameters of light weight torpedoes. The checking items are composed of general conditions of underwater mobile systems such as stability and dynamic sensitivity and specified performance requirements for light weight torpedoes.

Development of PC-based Radiation Therapy Planning System

  • Suh, Tae-Suk;P task group, R-T
    • Proceedings of the Korean Society of Medical Physics Conference
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    • 2002.09a
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    • pp.121-122
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    • 2002
  • The main principle of radiation therapy is to deliver optimum dose to tumor to increase tumor cure probability while minimizing dose to critical normal structure to reduce complications. RTP system is required for proper dose plan in radiation therapy treatment. The main goal of this research is to develop dose model for photon, electron, and brachytherapy, and to display dose distribution on patient images with optimum process. The main items developed in this research includes: (l) user requirements and quality control; analysis of user requirement in RTP, networking between RTP and relevant equipment, quality control using phantom for clinical application (2) dose model in RTP; photon, electron, brachytherapy, modifying dose model (3) image processing and 3D visualization; 2D image processing, auto contouring, image reconstruction, 3D visualization (4) object modeling and graphic user interface; development of total software structure, step-by-step planning procedure, window design and user-interface. Our final product show strong capability for routine and advance RTP planning.

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A Study on the optimal selection of backfill method using VE/LCC Analysis for Urban Underground Railway (VE/LCC 분석을 통한 도시철도 지하구조물 상부 되메우기의 최적대안 선정에 관한 연구)

  • Kim, Kyong-Ho;Shin, Min-Ho;Park, Jong-Kwan
    • Proceedings of the KSR Conference
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    • 2008.11b
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    • pp.100-106
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    • 2008
  • Road on the urban underground railway has been repaired for several years right after completion caused by the settlement of backfill and the damage of utility lines, which demands the practical application of life-cycle cost on design of backfill. This study perform the VE and LCC Analysis to select a optimal method of backfill and present the models and factors of VE process in the consideration of specialists' opinion and judgement on the category of critical maintenance items.

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Framework for Estimating Appropriate Construction Duration of CFRD in the Planning Phase

  • Kim, In Kyum;Kim, Kyong Ju;Yun, Won Gun
    • International conference on construction engineering and project management
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    • 2015.10a
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    • pp.604-605
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    • 2015
  • To secure quality of dam construction needs appropriate construction duration. Tight construction schedule may have negative influence on infrastructure quality, work safety and maintenance cost. It is necessary to reflect proper construction duration in the planning phase. There have been standards for estimating construction duration of building and industrial complex development but dam construction have not. In order to estimate construction duration of CFRD, feasible study reports and design reports were analyzed to acquire available information. After that, considering on construction duration methods such as comparison with similar cases, approximate estimating formula, approximate quantity assumption were adapted to Critical Path items. Hence, this study present framework for construction duration estimating of CFRD in the planning phase. This framework can be applied other types of dam along the same line.

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System Safety Program Plan for The Development of KHSR (고속전철 기술개발 안전 확보 계획)

  • 황희수;최강윤
    • Proceedings of the KSR Conference
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    • 1998.11a
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    • pp.288-295
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    • 1998
  • In this paper the system safety program plan(SSPP) for the development of Korea high speed railway system was presented. The plan for the design phase built up base upon MIL-STD 882C, manual for the development of rail transit system safety program plans by American Public Transit Association, and SSPP for Seoul-Pusan High Speed Rail project should be modified and then applied to the phases of manufacturing, test and commissioning. The plan deals with the safety program, the reference standards, the management and responsibility for the safety related activities, the methods to be used for early identifying safety critical items and functions and eliminating or controlling all hazards in a timely and cost-effective manner, and the documentation generated for safety assessment.

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Smart-tracking Systems Development with QR-Code and 4D-BIM for Progress Monitoring of a Steel-plant Blast-furnace Revamping Project in Korea

  • Jung, In-Hye;Roh, Ho-Young;Lee, Eul-Bum
    • International conference on construction engineering and project management
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    • 2020.12a
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    • pp.149-156
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    • 2020
  • Blast furnace revamping in steel industry is one of the most important work to complete the complicated equipment within a short period of time based on the interfaces of various types of work. P company has planned to build a Smart Tracking System based on the wireless tag system with the aim of complying with the construction period and reducing costs, ahead of the revamping of blast furnace scheduled for construction in February next year. It combines the detailed design data with the wireless recognition technology to grasp the stage status of design, storage and installation. Then, it graphically displays the location information of each member in relation to the plan and the actual status in connection with Building Information Modeling (BIM) 4D Simulation. QR Code is used as a wireless tag in order to check the receiving status of core equipment considering the characteristics of each item. Then, DB in server system is built, status information is input. By implementing BIM 4D Simulation data using DELMIA, the information on location and status is provided. As a feature of the S/W function, a function for confirming the items will be added to the cellular phone screen in order to improve the accuracy of tagging of the items. Accuracy also increases by simultaneous processing of storage and location tagging. The most significant effect of building this system is to minimize errors in construction by preventing erroneous operation of members. This system will be very useful for overall project management because the information about the position and progress of each critical item can be visualized in real time. It could be eventually lead to cost reduction of project management.

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A Basic Study of Legal Standards for Building Health Performance (건축물의 건강성능에 관한 법적 기준의 기초연구)

  • Lee, Hyun-Min;Ryu, Sang-Yeon;Kim, Sun-Kuk
    • KIEAE Journal
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    • v.9 no.6
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    • pp.19-26
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    • 2009
  • In modern architecture, the air-tight construction aimed at saving the energy rather causes ventilation problems and the artificial materials for cost reduction worsen the residential quality. To deal with such negative effect, the study on evaluating the health performance becomes increasingly critical. Among the various factors such as design quality, selected material, construction method and mechanical system that shall be subject to evaluation to identify the health performance of the building, the study was aimed at investigating the legal standards associated with healthy building in various countries. Such evaluation items will provide inputs for an attempt to build legal criteria for a building health performance rating system in Korea.

A Study for the Characteristics of Men' Costume Style on Contemporary Fashion - Focusing on Metrosexual Phenomena - (현대 패션에 나타난 남성복 스타일 특성에 관한 연구 - 메트로섹슈얼 현상을 중심으로 -)

  • Lee, Un-Young;Byun, Mi-Yeon;Lee, In-Seong
    • Journal of the Korea Fashion and Costume Design Association
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    • v.8 no.2
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    • pp.125-133
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    • 2006
  • Metro-Sexual is one of the most representing case showing contemporary life style of men that rooted into public already. The fundamental feature of this Metro-Sexual is the conversion of men's costume style to womanness which also could be seen from the history of clothes. The former works about sexual image, expression of sexual identity, androgynous and borderless phenomenon have been referred as base of this work. To analyze Metro-Sexual in modern social/cultural factors through such existing works will be critical part of understanding entire fashion trend in this day beyond sexual limit. As research method, former works, references, various fashion magazines and fashion related sites was used to grasp conception and womanity of Metro-Sexual. In a limited time interval from $2001{\sim}2006$ for practical work, silhouette, detail, trimming, colors, items, patterns and accessories were analyzed selected from famous S/S, F/W men's fashion collection magazine and internet site of professional fashion institute. It is obvious that Metro-Sexual already spread out in men's fashion based on such social/cultural background as new century's icon that regarded as critical factor in researching contemporary men's fashion and of the future.

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The Proposal of Implementation Plans for Brand-centered Design Leadership (브랜드 중심의 디자인리더십 실행방안 제안에 관한 연구)

  • Kim, Eun-Young;Lee, Jin-Ryeol
    • Science of Emotion and Sensibility
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    • v.14 no.3
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    • pp.445-458
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    • 2011
  • This study aims to propose management items and implementation plans that can be used to manage the following topics: what components should be managed to ensure effective implementation of design leadership, which is critical to today's business management? And are all parts of a company established in accordance with the brand concept, thereby ensuring brand-oriented design leadership? Firstly, this study divided the components of design leadership management into, in a broad sense, vision, culture and platform, established sub-components that should be considered in managing each higher component, and suggested implementation plans for each component. Secondly, the implementation plans for each component were classified into workforce structures, development of brand penetration programs, distribution of time and material resources and application of identity programs. Also, each classified item was further categorized and detail implementation plans for each item were suggested. The outcomes of this study can be utilized as guidelines to evaluate whether each component is properly managed in implementing design leadership. It is also expected that these will serve as useful guides for designers, managers and consultants.

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Optimization on Organoleptic Charateristics of Cauliflower Pickles (콜리플라워를 이용한 피클제조 최적화)

  • Yoon, Ji-Young;Hwang, Jae-Sun;Joo, Na-Mi;Jung, Hyun-A
    • Journal of the Korean Society of Food Culture
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    • v.19 no.2
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    • pp.193-199
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    • 2004
  • The purpose of this study was to determine the organoleptic charateristics of cauliflower pickles made in various compounding ratio according to central conposite design for optimum organoleptic characteristics of the cauliflower pickles. The optimum mixing condition of cauliflower pickles were optimized, using central composite design with 3 variables and 3 levels, by response surface methodology. The various kinds of cauliflower pickle were made in various compounding ratio of vinegar, salt and sucrose - critical ingredients of pickle recipe - and were presented to reliable panels, who graded the subjects in 7 degrees for 4 items : color, flavor, hardness and overall quality. The optimum mixing conditions of cauliflower pickle were 603.50g of vinegar, 80.13g of salt and 251.07g of sucrose in the maximum point of overall quality.