• Title/Summary/Keyword: Link Composition

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A study on the link composition design of a double link type level luffing jib crane (II) (이중 링크 형식 수평 인입 집 크레인의 링크 구성 설계에 관한 연구(II))

  • Hur, C.W.;Choi, M.S.;Moon, D.H.
    • Journal of Power System Engineering
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    • v.15 no.1
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    • pp.57-63
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    • 2011
  • It is very important to determine link composition of a crane in the basic design of the crane. There are many parameters in the design for the link composition of a double link type level luffing jib crane. We analyze the variation of link composition according to the variation of these parameters which are the angle of fixed link, the angle between the fixed link and backstay when the position of the crane is the maximum working radius, the ratio of fly jib length between two moving hinges to the total length of fly jib, the length of backstay, and the slewing radius. In this paper, we describe the application of the previous analysis program of the link composition design for a double link type level luffing jib crane.

A Study on the Link Composition Design of a Double Link Type Level Luffing Jib Crane (I) (이중 링크 형식 수평 인입 집 크레인의 링크 구성 설계에 관한 연구( I ))

  • Moon, D.H.;Hur, C.W.;Choi, M.S.
    • Journal of Power System Engineering
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    • v.13 no.1
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    • pp.19-25
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    • 2009
  • This paper is a study on the link composition design of a double link type level luffing jib crane using path generation synthesis passing through three precision points according to parameters, the length of backstay, the ratio of fly jib length between two moving hinges to the total length of fly jib, the location of a intermediate passing point etc. when the maximum and minimum working radius of the crane are given. The performance of the crane depends on the deviation of the luffing trajectory at fly jib tip. The luffing trajectories according to the above parameters are analyzed and shown in graphs by the developed computer program. In a real-life design, some trials are needed to arrive at a proper link composition design. Therefore, it is expected that the present computer program can rapidly and exactly deal with a link composition design proper to the design criteria of the crane.

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Static and Dynamic Analysis for a Double Link Type Level Luffing Jib Crane (이중링크 형식 수평인입 집 크레인의 정적·동적 해석)

  • Moon, D.H.;Hur, C.W.
    • Journal of Korean Society of Steel Construction
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    • v.12 no.6
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    • pp.715-725
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    • 2000
  • As a link composition of a double link type level luffing jib crane was determinated through the link composition design, the design to be considered will be computations of the luffing trajectory deviation at the fly jib tip and the required luffing device capacity. This paper is a study regarding the static and dynamic analysis for a mechanism of the crane. The objective of the static analysis is to determinate the capacity and the dimension of luffing device when the crane selfload, rated hoisting load, wind load and inertia force are applied on the crane. The objective of dynamic analysis is to compute the luffing trajectory deviation, velocity and inertia force due to luffing acceleration for each link. All analyses are performed by computer programs. The reliability of the program was checked by results from analyses of the related commercial package. It is expected that the productivity and reliability of the design can be improved by this program which can rapidly and exactly deal with static and dynamic analysis for a given link composition of the crane.

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A Study on the Characteristics of Fashion Expression after the 1990s - Focusing on the link between Fashion Trend and Characteristics of Postmodernistic Fashion - (90년대 이후 패션일러스트레이션의 표현적 특성에 관한 연구 - 패션의 트랜드와 패션의 포스트모던적 특성과의 연계(連繫)를 중심으로 -)

  • 성광숙
    • Journal of the Korean Society of Costume
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    • v.54 no.1
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    • pp.109-123
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    • 2004
  • In this study, the fashion trend after the 1990s and the characteristics of fashion in the postmodernistic viewpoint that mainly effected fashion were observed, and the characteristics of fashion illustration expression was observed in the viewpoint of its link. It can be seen that mutually close characteristics are mutually linked. As the result of this study, the characteristics of fashion illustration can be categorized into three areas. and the sub-concepts are as following. The first category is the pursuit of feminine beauty of individual multi-dimension. This includes- 1) retro feminine beauty; 2) fetishistic and ecstatic feminine beauty; 3) mixed composition genderless (mixed composition style. ageless style and raceless style): and 4) beauty of body deconstruction and reconstruction (deformation due to partial transformation, change into animalization, mechanization and spirituelization. and beautification of crudeness). The second is the intentional deviation of expression and production technique. This includes-1) deviation from traditional perspective; 2) deviation from composition concept: and 3) breaking away from the existing material and expression technique of material. The third is the pursuit of authority-rejection form of expression. This is an area that should be noticed in the fashion illustration expression of the 1990s, as it shows the most diverse phenomenon. The sub-concepts of this category include- 1) separation of art 2) minimalism (minimalism in structure and production method); 3) flatness; 4) completion of incompletion; 5) accidentalism; 6) sportive;7) absence of figure; 8) intentional childishness 9) story development; 10) techno mechanism and cyber character; and 11) animation style.

New Response Surface Approach to Optimize Medium Composition for Production of Bacteriocin by Lactobacillus acidophilus ATCC 4356

  • RHEEM, SUNGSUE;SEJONG OH;KYOUNG SIK HAN;JEE YOUNG IMM;SAEHUN KIM
    • Journal of Microbiology and Biotechnology
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    • v.12 no.3
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    • pp.449-456
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    • 2002
  • The objective of this study was to optimize medium composition of initial pH, tryptone, glucose, yeast extract, and mineral mixture for production of bacteriocin by Lactobacillus acidophilus ATCC 4356, using response surface methodology. A response surface approach including new statistical and plotting methods was employed for design and analysis of the experiment. An interiorly augmented central composite design was used as an experimental design. A normal-distribution log-link generalized linear model based on a subset fourth-order polynomial ($R^2$=0.94, Mean Error Deviance=0.0065) was used as an analysis model. This model was statistically superior to the full second-order polynomial-based generalized linear model ($R^2$=0.80, Mean Error Deviance=0.0140). Nonlinear programming determined the optimum composition of the medium as initial pH 6.35, typtone $1.21\%$, glucose $0.9\%$, yeast extract $0.65\%$, and mineral mixture $1.17\%$. A validation experiment confirmed that the optimized medium was comparable to the MRS medium in bacteriocin production, having the advantage of economy and practicality.

Secure Component Composition for Practical Systems (실용적인 시스템을 위한 안전한 소프트웨어 컴포넌트 조합)

  • Lee Eun-Young
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.16 no.4
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    • pp.43-57
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    • 2006
  • When building a software system out of software components, the composition is not simple because of the complexity caused by diverse versions, digital signatures, static type information, and off-the-shelf components from various vendors. Well-established linking policies are one of the best solutions to solve the complexity problem at linking time. Secure Linking (SL) enables users to specify their linking policies which can be enforced at link time. Secure Linking framework is a framework based on a higher-order logic in order to help build a SL system. This paper shows that the Secure Linking logic is expressive enough to describe a real-world component composition system, the linking protocol of.NET. The paper also demonstrates the advantage of the logic-based linking framework by discussing the weakness of the code signing protocol in.NET which was found while we encoded the assembly linking system of.NET.

Two-phase Search Algorithm for Web Services Composition Redundanty (잉여 없는 웹 서비스 조합을 위한 2단계 탐색 알고리즘)

  • Kim, Hyeon-Ji;Kwon, Joon-Ho;Lee, Dae-Wook;Lee, Suk-Ho
    • Journal of KIISE:Databases
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    • v.36 no.2
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    • pp.123-138
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    • 2009
  • In recent years, the web services composition search has become an issue of great interest. The web services composition search is the process of integrating individual web services to yield desired behavior. Through the web services composition search, more sophisticated functionalities can be provided. Current solutions can be classified into three main classes: forward chaining approach, backward chaining approach and two-phase approach. However one-way chaining approaches, such as forward chaining approach and backward chaining approach have limitations of searching irrelevant web services. And two-phase approach has limitations of including redundant web services. In this paper, we propose an unredundant web services composition search based on the two-phase algorithm. The algorithm consists of a forward phase and a backward phase. In the forward phase, the candidate web services participating composition will be found efficiently by searching the Link Index. In the backward phase, unredundant web services compositions will be generated from candidate web services by using the Token Manager. The experimental results show that our proposed algorithm is more efficient than one-way chaining approaches. The experimental results also show that our algorithm can provide more solutions than previous two-phase approach and is comparable to previous one in execution time.

DeNitrification-DeComposition (DNDC) Improvement through Model Coupling and Sub-model Development Considering Agricultural Land Use and Future Climate Change

  • Min, Hyungi;Hwang, Wonjae;Kim, Min-Suk;Kim, Jeong-Gyu
    • Korean Journal of Environmental Biology
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    • v.35 no.1
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    • pp.37-46
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    • 2017
  • Climate change is the biggest concern of the $21^{st}$ century. Greenhouse gas (GHG) emissions from various sectors are attracting attention as a cause of climate change. The DeNitrification-DeComposition (DNDC) model simulates GHG emissions from cropland. To study future GHG emissions using this simulation model, various factors that could change in future need to be considered. Because most problems are from the agricultural sector, DNDC would be unable to solve the factor-changing problem itself. Hence, it is necessary to link DNDC with separate models that simulate each element. Climate change is predicted to cause a variety of environmental disasters in the future, having a significant impact on the agricultural environment. In the process of human adaptation to environmental change, the distribution and management methods of farmland will also change greatly. In this study, we introduce some drawbacks of DNDC in considering future changes, and present other existing models that can rectify the same. We further propose some combinations with models and development sub-models.

Effects of CETP gena polymorphisms on atherogenic lipoprotein phenotypes in Koreans

  • Cho, Hong-Keun;Yangsoo Jang;Cho, Eun-Young;Park, Hyun-Young;Lee, Hakbae;Lee, Jong-Eun
    • Nutritional Sciences
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    • v.6 no.2
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    • pp.100-105
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    • 2003
  • Small dense LDL(LDL III) is emerging as a major risk factor for coronary artery disease. LDL III generation is associated with high triglyceride concentration, high hepatic lipase activity, and high cholesterol ester transfer protein (CETP) levels. CETP polymorphisms have been reported to be associated with coronary artery disease. In this study, we investigated the relationship between CETP polymorphism and LDL III generation. VLDL1, VLDL2, IDL and LDL subfractions were measured in 87 normal healthy Korean subjects who had been SNP genotyped for Taq1B, I405v and A629C. We found no differences in LDL subfractions and lipoprotein composition between homozygotes for Taq1B2B2, and those for Taq1B1B1 and Taq1B1B2. There were no differences in LDL subfractions and lipoprotein composition between homozygotes for 629AA, and those for 629AC and -629CC. However, homozygotes for 405VV had a significantly lower LDL III concentration and proportion than those for 405II and 405IV. We concluded that, among the Taq1B, I405V and A629C polymorphisms, only the 1405V polymorphism was associated with the concentration and proportion of LDL III.

A Suggestion for the Development of Cultural Products through the Analysis of the Significance Patchwork Wapping Colthes (Jogakbo) (조각보 의미 분석을 통한 문화상품 개발 방안)

  • Kim, Yeo-Kyung;Hong, Na-Young
    • Journal of the Korean Society of Costume
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    • v.59 no.3
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    • pp.145-156
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    • 2009
  • This study proposes the product development through an organic link with multi-faceted analysis on the archetype of traditional costumes culture. In order to find ways to develop cultural products, Jogakbo was selected, and the research result is as following. 1. Analysis on the types of Jogakbo products sold in the market shows that there are not only living, stationary, and fashion items, but also DIY packages. In terms of materials used, most of these Jogakbo products were made of fabric or mixture of different materials. These products displayed similar tendency by reflecting formative characteristics of Jogakbo. 2. This study analyzed the color, surface composition, material, manufacturing, and usage of Jogakbo. The rotor of Jogakbo is mostly composed of mono tone colors or Obangsac(five-element colors). The mono tone colors carries environmentally friendly meaning as it is using the natural color and Obangsac means harmony. Moreover, the surface composition of Jogakbo represents the expansion through connection and its material is also meaningful in that it is recycling. Manufacturing of Jogakbo has educational significance, fortune-wishing characteristics, decorative function, it also gives a gratification of handcraft. The usage of Jogakbo is a multi-(unctional article whose form is determined by an item that is held inside it. 3. Through the analysis on Jogakbo, this study presents the baby wear in relation to the ere-friendliness of colors, brooch sets using the surface composition, dresses using recycling fabric, children's educational instruments with educational significance, as well as multi-functional packages in regards to usage of Jogakbo.