• 제목/요약/키워드: Labors

검색결과 209건 처리시간 0.025초

Automatic Hardware/Software Interface Generation for Embedded System

  • Son, Choon-Ho;Yun, Jeong-Han;Kang, Hyun-Goo;Han, Tai-Sook
    • Journal of Information Processing Systems
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    • 제2권3호
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    • pp.137-142
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    • 2006
  • A large portion of the embedded system development process involves the integration of hardware and software. Unfortunately, communication across the hardware/software boundary is tedious and error-prone to create. This paper presents an automatic hardware/software interface generation system. As the front-end of hardware/software co-design frameworks, a system designer defines XML specifications for hardware functions. Our system generates hardware/software interfaces including Device Driver, Driver API, and Device Controller from these specifications. Embedded software designers can easily use hardware just like system libraries. Our system reduces the mistakes and errors that can be occurred when a software programmer directly connects software to hardware, and supports balancing labors between hardware developers and software programmers. Moreover, this system can be used as the back-end for a hardware/software co-design framework.

터널지보재로서 격자지보(Lattice Girder)의 현장적용성 평가 연구 (Evaluation of an applicability of lattice girders for the tunnel support)

  • 문홍득;이성원;배규진
    • 터널과지하공간
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    • 제6권2호
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    • pp.122-130
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    • 1996
  • Generally the NATM technique uses shotcrete, rock bolts, H-beam steel ribs, and concrete lining for the tunnel support in Korea. Among them, H-beam steel ribs are extremely heavy and difficult for workers to handle. Therefore, especially in Europe, lattice girders are being used instead of H-beam steel ribs for tunnel support. Lattice girders have basically the same function as H-beam steel ribs in tunnelling. The main advantages of using lattice girders compared to H-beam steel rib supports are as follows: 1) lattice girders have relatively a low weight enough to be easily lifted and installed by labors and 2) they create a more effective bond with the shotcrete. The purpose of this study is to evaluate the effectiveness and applicability of lattice girders compared to H-beam steel ribs used in construction tunnel sites and to show that lattice girders can be adequately applied in domestic tunnel construction sites as a new tunnel support system.

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마늘파종기 개발에 관한 연구 (I) -마늘의 파종실태 및 물리적 특성 조사- (Development of a Garlic Clove Planter (I) -Survey for planting condition and physical properties of garlic dove-)

  • 박원규;최덕규;김영근
    • Journal of Biosystems Engineering
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    • 제26권6호
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    • pp.495-502
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    • 2001
  • Upright positioning of garlic cloves has been considered as an essential process for mechanical planting because positioning affects the quality and yield of garlic production. Due to the geometrical uniqueness and irregularity of garlic cloves in shape, the planting operation has been conducted by manual. Manual planting requires intensive labors and high production cost. The overall Boal of this research was to develop a garlic clove planter which maintains a garlic clone upright. Specific objective was investigating planting condition and physical properties of garlic clove. The results were summarized as fellows : Based on the survey results, a garlic clove planter should have a planting capacity of at least 140 cloves in a pyung (3.3m$^2$) with the row spacing of 140mm and hill spacing of 120mm for a productive cultivation.

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순천(順天) 선교촌(宣敎村)의 형성(形成)과 건축특성(建築特性)에 대한 조사연구(調査硏究) (A Research on the Characteristics of Suncheon American Missionary Compound from 1907 to 1945)

  • 도선붕;한규영
    • 한국농촌건축학회논문집
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    • 제4권2호
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    • pp.49-62
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    • 2002
  • The purpose of this study was to investigate and analyze the building process and characteristics of Suncheon American missionary compound-missionary dwellings, medical clinics, schools and churches, for the sake of giving fundamental facts to the researcher of this field. The results of the study is summarized as follows. The construction participants of Suncheon missionary architecture are American supervisor- Rev. Preston, Elder Swinehart and Doctor Timmons, Korean christian labors, Chinese masons and Japanese carpenters. The characteristics of architectures are described as the space composition according to American life style, the architectural form of American colonial style. And also the masonry structure using the Korean domestic stones and bricks and imported various materials- such as the cements, timbers, glasses, doors and windows, etc- from the North America.

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지반공학 분야에서 교육용 도구로서의 원심모형실험 활용법 (사면안정 모델을 중심으로) (Utilization of an Instructional Centrifuge Test for Teaching in Geotechnical Engineering(Focus on Slope Stability Model))

  • 이강일;김태형;김찬기;백원진
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
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    • pp.1372-1377
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    • 2008
  • Recently, centrifuge tests have been widely used as tools in geotechnical engineering researches in domestic and foreign. However, the size of these centrifuge facilities is very large and thus the tests require for long time, high expense, and many labors. In this study, therefore, a small size of instructional centrifuge, which can conduct tests in a short period of time effectively, was introduced. This centrifuge facility introduced in here was developed for geotechnical engineering education for graduate and undergraduate students. The slope stability model having $65^{\circ}$ slope formed with clay was used to investigate the application of the instructional centrifuge by considering experimental procedures and results.

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안전사고 예방을 위한 요인 분석에 관한 기초적 연구 -요일별, 일일공사금액 및 일일 작업양별 요인을 중심으로 (Preliminary Study on the Factor Analysis for Accident Prevention)

  • 윤귀용;김상철
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2010년도 춘계 학술논문 발표대회 1부
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    • pp.179-183
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    • 2010
  • The safety accident is one of the formidable issues in construction field, and in order to prevent safety accident, contractors perform safety education, safety control document, meeting with labors, and safety instruction in construction phase. However, safety accident is occurred continuously, it is needed to analyze which factors are affected to safety accident. day of the week, daily construction cost, and daily work task were selected as those factors. The result in this research represented that those factors were not considered as an critical one in safety accident. Because of approach limitation to safety accident, only two case studies were collected. If more safety accident cases are gathered in future study, it will clarify the cause of safety accident and will prevent safety accident.

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송사리 태아를 이용한 농약기형독성에 관한 연구 (Teratological test of pesticide using medaka embryo)

  • 성하정;이해근;정영호;조명행
    • 한국환경성돌연변이발암원학회지
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    • 제16권1호
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    • pp.30-34
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    • 1996
  • This study was performed to examine the availability of using medaka (Oryzias latipes) in teratological test. Medaka embryos were collected within 2 hours post-fertilization and cultured in petri dishes containing buffered saline until hatching. The embryos were treated with 0.56 mg/l chlorpyrifos-methyl and 10 mM methyl methanesulfonate at 20 stages (about 35 hours post-fertilization). Eleven developmental features were selected and observed from 33 stages (about 9 days post-fertilization). Scoring system was developed and applicated for the measurement of potential teratological effects by the test compound. Chlorpyrifos-methyl did not induce teratological effect in medaka embryos. However, we found teratological test using medaka embryo reduced the cost, labors, period and space of experiment significantly compared with teratological study using rodents. Above findings strongly suggest that medaka embryo can be used as a lab animal model for teratogenicity test instead of rodents.

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근로자들의 근무유연성에 대한 요구 분석 - 한 가족친화인증기업 근로자들의 사례 - (A Case Study on the Family-Friendly Firm Workers' Flexibility Needs)

  • 이현아;김선미;이승미
    • 가족자원경영과 정책
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    • 제15권2호
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    • pp.63-84
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    • 2011
  • This qualitative case study focused on the workers' flexibility needs. We selected eight full-time workers from one 2009 family friendly certified firm for observation and in-depth interview. The workers are categorized into three groups; male employees with housewives, double income family workers depending on extended family, and double income family workers depending on paid babysitter. The spouse's work status and informal extended familial support to child care were crucial factors to influence their work family life styles and flexibility needs. The flex time is the most desirable everyday needs for the dual working child caring parents depending on the paid help. And the female workers' concerned about the stigma effect of the institutionalized flexibility use of the inferior labors.

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현악기 제조 자동화시스템 구축을 위한 Mechanism 설계 (A Mechanism of Automated Manufacturing Processes for Classical String Musical Instruments)

  • 전태보;윤경수
    • 산업기술연구
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    • 제19권
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    • pp.321-329
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    • 1999
  • An automated manufacturing process mechanism for string musical instruments has been designed in this study. In contrast to other manufacturing products, classical string instruments try to preserve their traditional design shapes even in these days and involve variety of wood working(carpentry) characteristics including highly skilled curved surfaces treatments. Great efforts have been put to develop an integrated and automated system for improved product quality and process control, reduced physical labors, better safety etc. They, however, have been limited to devise jigs and tools with regard to selected processes due to lack of technology and research man-powers. We carefully examined the products and process characteristics, and an automated mechanism which overcome prevailing drawbacks has been derived.

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한국가톨릭 여성 수도자의 수도복 토착화 디자인에 대한 연구 (A Study on Inculturated Modes of the Religious Habite for Women Religious Congregation of the Korean Catholic Church.)

  • 조정미
    • 복식
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    • 제42권
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    • pp.5-24
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    • 1999
  • The purpose of this study is to present new design for religious habits which represen traditional Korean characters as well as prope charisms of religious congregations. The preliminary research was carried out through questionnaires. The result of this survey suggests the way how to improve the design of habits as follows: 1. The habit has to be simple according to the spirit of vowed poverty. 2. It is necessary to take into consideration the reality of Korean culture and the climate with four seasons 3. The habit is to be of help to give witness to evangelical life and safeguard the dignity of the religious state. 4. It has to be appropriate to the environment and circumstance of apostolic mission. 5. It has be funtional and conducive to apostolic activities and labors. 6. The design has to be such as will not alienate ordinary people. 7. It should express the charism of each religiou congregation as well as Korean identity. Consquently four types of inculturated habit design were newly developed and actual dresses or suit have been manufactured as a apart of this study.

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