• Title/Summary/Keyword: Point-oriented

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Speed Field orient control of permanent magnet linear motor according to determination of system rate. (직선형 영구 자석 동기 모터의 시스템 정격 선정에 따른 속도 제어 특성)

  • Jang, Seok-Myeong;You, Dae-Joon;Jang, Won-Bum;Yang, Moon-Sub
    • Proceedings of the KIEE Conference
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    • 2005.07b
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    • pp.1273-1275
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    • 2005
  • This paper presents design of speed control system for slot less iron-cored PM linear synchronous motor using space vector PWM. the design must be considered by the useable limits of the DC link voltage and dynamic operating rage as well as the characteristics of design parameters in a point of system. Therefore, in this paper, the permissible operating range of manufactured motor by determination of rate speed and rate thrust according to switching scheme of DC link voltage are offered. The vector control requires information about rotor position. And we can need to the Hall sensor for sampling current. In order to agree with this purpose, Digital Signal Processor(TMS320F240x) developed for implementation of a speed Field Oriented Control.

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Factory Automation(FA) in Korea firms and Development Strategy (한국산업의 공장자동화와 발전전략)

  • 이근희;안문영
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.14 no.23
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    • pp.71-100
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    • 1991
  • Investment in FA facilities has been accerelated since 1986, turning point by labor strife in Korea firms. Most commonly adopted automation tech, in their manufacturing process consists of NC. Robotics, PLC, CAD/CAM now on and further confused system oriented FMS, CIM, etcs. undergoing. But for all their remarkable notices in manufacturing systems, The competitive position on product cost, quality, shorten delivery and profit has never been recovered in global swing market. To make some empirical suggestions with a view to competitive strategy of Korea firms by FA, to the conclusion largely FA tech. adoption can be justified only when its application on new product productions and improved the structure of products comparatively. Because of when it was applied in old production process. The effectiveness is very doubtful to the lacks of consistent and integrate manufacturing policy with the strategy of the fim and their poor standardization level in shop floors.

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Use Case Oriented Requirements Engineering for improving the previous ViRE's Process (기존 ViRE 프로세스 개선을 위한 Use Case 지향 요구공학)

  • Park, Bokyung;Moon, Soyoung;Kim, Kidu;Kim, Boyeon;Kim, R. Youngchul
    • Annual Conference of KIPS
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    • 2012.11a
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    • pp.1497-1499
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    • 2012
  • 전통적인 소프트웨어 개발에서는 초기 요구사항을 정확히 판단하고 분석하는 것이 중요하다. 이를 위해 B.Boehm은 가치혁신 요구공학을 제안하지만, 이는 기존의 개발 방법 기반이다. 본 논문에서는 가치 혁신 요구공학 개선을 위해, 유스케이스 기반의 요구공학 방법을 제시와, 요구사항과 유스케이스의 우선순위 도출 방법을 제안한다. 이를 위해 어려운 시스템 요소(하드웨어와 소프트웨어)를 기본 단위인 유스케이스 요소와, 유스케이스 점수(Use Case Point) 개념을 적용하여 유스케이스 중요도를 도출한다. 그 기본 단위 내의 분석을 통해 쉽게 요구사항 추출 및 우선순위화를 한다. 이는 테스트 단계에서 우선순위화된 테스트 케이스를 적용이 가능한다고 본다.

IDEAL RIGHT-ANGLED PENTAGONS IN HYPERBOLIC 4-SPACE

  • Kim, Youngju;Tan, Ser Peow
    • Journal of the Korean Mathematical Society
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    • v.56 no.4
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    • pp.1131-1158
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    • 2019
  • An ideal right-angled pentagon in hyperbolic 4-space H4 is a sequence of oriented geodesics (L1,,L5) such that Li intersects Li+1,i=1,,4, perpendicularly in H4 and the initial point of L1 coincides with the endpoint of L5 in the boundary at infinity H4. We study the geometry of such pentagons and the various possible augmentations and prove identities for the associated quaternion half side lengths as well as other geometrically defined invariants of the configurations. As applications we look at two-generator groups A,B of isometries acting on hyperbolic 4-space such that A is parabolic, while B and AB are loxodromic.

IDEAL RIGHT-ANGLED PENTAGONS IN HYPERBOLIC 4-SPACE

  • Kim, Youngju;Tan, Ser Peow
    • Journal of the Korean Mathematical Society
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    • v.56 no.3
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    • pp.595-622
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    • 2019
  • An ideal right-angled pentagon in hyperbolic 4-space H4 is a sequence of oriented geodesics (L1,,L5) such that Li intersects Li+1,i=1,,4, perpendicularly in H4 and the initial point of L1 coincides with the endpoint of L5 in the boundary at infinity H4. We study the geometry of such pentagons and the various possible augmentations and prove identities for the associated quaternion half side lengths as well as other geometrically defined invariants of the configurations. As applications we look at two-generator groups A,B of isometries acting on hyperbolic 4-space such that A is parabolic, while B and AB are loxodromic.

The Relationship among Perceived Quality, Value, Satisfaction, and Loyalty - Focused on the Discount Retail Store - (지각된 품질, 가치, 만족 및 충성도의 관계 - 대형할인점을 중심으로-)

  • Oh, Jae-Sin;Chung, Ki-Han;Kim, Dae-Up
    • Journal of Industrial Convergence
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    • v.3 no.1
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    • pp.55-77
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    • 2005
  • Recently the environment which besieges distribution system is changing suddenly. With opening the distribution market together the advanced various nations new multinational discount stores are introduced and the competition from this market is growing in intensity. Like this change is raising the recognition of the enterprises against the strategy importance of the distribution channel. Consequently, from under competing which is deepened from the hazard where the discount point industry exists what, it will not be able to do the customer-oriented management which it sees. To lead a customer satisfaction finally and it is important to put out. As only low price standing sale it will not be able to create a competitive advantage and raising the quality also it is demanded with the diversification of product assortment together. It does a customer loyalty degree further firmly and compared to the long-range strategy is necessary.

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A Empirical Study on the Changed Consumer Perception to Internet Based Channel (인터넷 기반 유통경로에 대한 소비자인식의 변화에 관한 실증적 연구)

  • Jung, Ki-Su;Moon, Seung-Jae
    • Journal of Industrial Convergence
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    • v.1 no.1
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    • pp.143-157
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    • 2003
  • This paper examines the changed consumer perception to internet based channel. Internet based channel has time merit, place merit, assortment merit, compatibility merit, and so on. For seller, in the mean while, it has merits in the way of diminishing physical distribution cost, promotion cost, and reaching globally in the same time. In spite of so many merits of internet based channel, there were many types complain in past. Most of all, consumers expect that it will provide low-price merit to consumer, because it doesn't need shop, warehouse, stock, etc. Based on the empirical analyses in past, it didn't work, especially to price oriented consumer's perception. But in this research, it shows changing consumer's perception. Comparing past data with current data, we found outstanding gross in price related variables figure. But, in goods delivery related factors and personal credit information related factor, consumer recognized much more negatively yet. So, we conclude that even though some factors show improved perception, there are tasks to solve. We will observe the tuning point at that time.

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Building Retrieval System using feature point extraction and Brute-Force Matcher (특징점 추출과 Brute-Force Matcher를 활용한 건물 검색 시스템)

  • Lee, Areaum;Hong, Enry;Son, Sangmin;Ko, ByoungChul
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2020.11a
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    • pp.328-329
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    • 2020
  • 처음 방문하는 도시에서 건물의 외형만을 보고 목적지를 찾는 것은 매우 어려운 일이다. 따라서 본 연구에서는 스마트폰 카메라로부터 촬영된 영상에서 특징점을 추출하고 이를 이미 데이터베이스에 저장된 영상과 매칭하는 작업을 통해 해당 건물의 이름이 무엇인지 알려주는 시스템을 개발하였다. Oriented fast and rotated brief 알고리즘을 이용하여 크기 변화, 회전 등에 강인한 특징점을 추출하였고 알고리즘과 Brute-Force Matcher와 K-Nearest Neighbor 방법을 이용하여 특징점을 매칭하였다. 제안된 시스템은 실제 스마트폰으로 촬영된 영상을 데이터베이스에 연동하여 실험한 결과 90% 이상의 정확도를 보여 주었다.

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대순진리회의 교리 체계와 사상적 특징에 관한 연구

  • Lee, Gyeong-Won
    • Journal of the Daesoon Academy of Sciences
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    • v.16
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    • pp.131-149
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    • 2003
  • The religious doctrine of the Daesunjinlihoe is composed of a next's 4 kinds. The first item is the object of worship. This is the starting point to understand one religion. The second is the main thesis. This is the intellectual expression of original religious experience of the founder of religion. The third is the creed. This regulates a faith practice of the association, being the faith confession. The fourth item is the purpose. The purpose is the ultimate state which the religion association intends to. This has the value as worldwide idea, including the personality completion of the individual. There are three kind feature of religious doctrine in Daesunjinlihoe. They are as follows. The first thing is the intellectual expression of the religious experience and it is the original of the founder. The second is the critical succession and transfiguration of traditional thought. The third is that it displays a future-oriented and new thought.

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A Trace Mechanism to Demonstrate the Verify of Aspect Weaving (Aspect Weaving 유효성 검증을 해결하기 위한 Trace Mechanism에 관한 연구)

  • Jin-Hyang Kim;Yong-Jae Song
    • Annual Conference of KIPS
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    • 2008.11a
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    • pp.563-565
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    • 2008
  • AOP(Aspect-Oriented Programming)는 어플리케이션을 다양한 관점으로 분해하여 객체지향에서 추구하는 모듈화를 더욱 잘 지원하도록 하는 프로그래밍 기법이다. AOP의 단점은 거의 모두가 실행 전에 메소드를 차단하도록 구성되어 있다. 그리고 클래스와 Aspect의 위빙시 join point의 유효성 결함이 많이 발생한다. 따라서 본 논문에서는 trace mechanism을 이용하여 유효성 결함을 감소시키며, 클래스와 Aspcet간의 메소드 호출 관계를 명백히하기 위해 참조테이블을 생성하였다. Weaver에 의해 위빙된 후 생성된 XML코드와 저장소에 저장된 참조테이블 정보는 개발자가 원하는 요구사항에 맞게 적당한 컴포넌트에 배치되도록 Validation Agent를 사용하였다.