• Title, Summary, Keyword: Basic Unit

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Development of robot work measurement by the unit motion model (단위 동작 모형에 따른 로봇 작업시간 측정법의 개발)

  • 권규식
    • 제어로봇시스템학회:학술대회논문집
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    • pp.367-370
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    • 1996
  • This study deals with the motion modeling by the unit motion of robots and the work measurement through classification of robot motions and standardization. The proposed approach is to scrutinize the Predetermined Time Standards(PTS) methods for measurement of manual tasks performed by people and the basic motions for accomplishing that tasks. And then, it constructs the unit motion models as subsets composed with the basic motions. It apply together with movements distance as a time variable, too. These results are used for the work measurements of robots by the unit motion models.

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A VLSI architecture for fast motion estimation algorithm (고속 움직임 추정 알고리즘에 적합한 VLSI 구조 연구)

  • 이재헌;라종범
    • Proceedings of the IEEK Conference
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    • pp.717-720
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    • 1998
  • In this paper, we propose a VLSI architecture for implementing a crecently proposed fast block matching algorithm, which is called the HSBMA3S. The proposed architecture consists of a systolic array based basic unit and two shift register arrays. And it covers a search range of -32 ~+31. By using a basic unit repeatedly, we can redcue the number of gates. To implement the basic unit, we can select one among various conventional systolic arrays by trading-off between speed and hardware cost. In this paper, the architecture for the basic unit is selected so that the hardware cost can be minimized. The proposed architecture is fast enough for low bit-rate applications (frame size of 352x288, 30 frames/sec) and can be implemented by less than 20,000 gates. Moreover, by simply modifying the basic unit, the architecture can be used for the higher bit-rate application of the frame size of 720*480 and 30 frames/sec.

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Elementary School Teachers' Perceptions on Effects of 'Basic Inquiry' Units in Experimental Grade 3~4 Science Textbooks developed for 2009 Revised National Curriculum (2009 개정 교육과정에 따른 초등학교 3~4학년 과학 교과용 도서 실험본의 '기초탐구' 단원의 효과에 대한 초등학교 교사의 인식)

  • Lee, Dae-Hyung;Kang, Hunsik;Yoon, Hye-Gyoung
    • Journal of Korean Elementary Science Education
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    • v.33 no.1
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    • pp.30-43
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    • 2014
  • 'Basic Inquiry' unit was newly included in the grade 3~4 science textbook developed for 2009 revised national curriculum. The unit deals with six basic inquiry skills such as 'observation', 'measurement', 'classification', 'prediction', 'inference', and 'communication'. This study investigated elementary school teachers' perceptions on the effects of 'Basic Inquiry' unit by questionnaires (N=104 for pre-survey, N=90 for post-survey). The results showed that how the teachers have taught basic inquiry skills before this new textbook and how they perceived the educational effects of the unit after experimental teaching period in three aspects; development of basic inquiry skills, facilitating science learning in other units, and implementation of open inquiry. The reasons of positive perceptions as well as negative perceptions were analyzed and discussed with the suggestions for further study.

A study on the Architectural Planning of Operating-Unit in General Hospital (종합병원의 수술유니트 계획에 관한 연구)

  • Chai, Choul-Gyun
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.7 no.1
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    • pp.77-84
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    • 2001
  • This study provide the planning guidelines for the existing and the new alternative. On the bases of survey and analysis, the basic data for OP-Unit have been proposed in consideration of the development of medical science and hygiene, economic conditions during the last twenty years in Germany. The results of the study were firstly, genera1 basic data, secondly, guidelines of the architectural design for OP-Unit und rooms, thirdly, new alternative OP-Unit with 2 and 3 operation rooms.

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Life Cycle Assessment for the Business Activities of Green Company -1. Analysis of Process Flow and Basic Unit (녹색기업의 사업활동 전 과정에 대한 환경성 평가 -1. 공정 흐름 및 원단위 분석)

  • Shin, Choon-Hwan;Park, Do-Hyun
    • Journal of Environmental Science International
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    • v.22 no.3
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    • pp.269-279
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    • 2013
  • In this paper, an environmental assessment was carried out on the whole process of industrial business activities to establish a basic plan for climate change mitigation and energy independency. The whole process was divided into each discharge process in terms of water, air, solid waste, green house gases and refractory organic compounds. The flowcharts and basic unit of process were analysed for three years (2008-2010), being utilized as basic information for the life cycle assessment. It was found that the unit loading for the whole process significantly depends on changes in the operation rate change and highly concentrated wastewater inflow. About 35% of solid waste production was reduced by improving the incineration method with co-combustion in coal boiler, generating about 57% of electricity used for the whole process, and consequently reducing the energy costs. As the eco-efficiency index was found to be more than 1, compared to the previous years, it can be said that improvement in general has taken place.

A New Basic Unit for Cascaded Multilevel Inverters with the Capability of Reducing the Number of Switches

  • Laali, Sara;Babaei, Ebrahim;Sharifian, Mohammad Bagher Bannae
    • Journal of Power Electronics
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    • v.14 no.4
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    • pp.671-677
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    • 2014
  • In this paper, a new basic unit is proposed. Then, a cascaded multilevel inverter basded on the series connection of n number of these new basic units is proposed. In order to generate all of the voltage levels (even and odd) at the output, three different algorithms to determine the magnitude of the dc voltage source are proposed. Reductions in the number of power switches, driver circuits and dc voltage sources in addition to increases in the numbr of output voltage levels are some of the advantages of the proposed cascaded multilevel inverter. These results are obtained through a comparison of the proposed inverter and its algorithms with an H-bridge cascaded multilevel inverter from the point of view of the number of power electronic devices. Finally, the capability of the proposed topology with its proposed algorithms in generating all of the voltage levels is verified through experimental results on a laboratorary prototype of a 49-level inverter.

Sesquiterpene Components from the Flower Buds of Magnolia fargesii

  • Jung, Keun-Young;Kim, Dong-Seon;Oh, Sei-Ryang;Lee, Im-Seon;Lee, Jung-Joon;Lee, Hyeong-Kyu;Shin, Dong-Hyuk;Kim, Eun-Hee;Cheong, Chae-Joon
    • Archives of Pharmacal Research
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    • v.20 no.4
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    • pp.363-367
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    • 1997
  • From the Chinese crude drug shin-i, the flower buds of Magnolia fargesii, four sesquiterpene, oplopanoe (1), oplodiol (2), homalomenol A (3) and $1{\beta},4{\beta},7{\alpha}$-trihydroxyeudesmane (4) were isolated. These structures were elucidated and the ${13}^C-NMR$ chemical shifts of these compounds were revised by means of various 2D-NMR techniques.

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Spatial Delineation of Planning Unit for Rural Village Improvement (농촌 생활환경 정비구역의 설정)

  • 조영국;김성진
    • Journal of Korean Society of Rural Planning
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    • v.4 no.1
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    • pp.15-21
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    • 1998
  • The purpose of the study is to identify a basic spatial unit for rural village redevelopment plan. An ideal spatial unit need to satisfy three basic premises: to be homogeneous as rural community, to be appropriate to implement the project, and to be compatible with regional planning systems. A spatial unit could, empirically, be defined based on the homogeneity at first, and then appropriateness and compatibility could be used to adjust its boundary. Mitan-Myun(13 villages), Pyungchang County, Dochuck-Myun(15 villages), Kwangju County, and Chuksan-Myun(28 villages), Kimje City in Korea were selected as case study areas. The degree of interrelationship between all possible pairs in each Myun was measured using spatial, socio-cultural, and economic indicators. Multidimensional Scaling(MDS) was used to identify a homogeneous spatial unit, and then indicators representing appropriateness and compatibility were used to adjust the identified boundary. New districts which have two or three villages were suggested as a reasonable spatial unit for rural village redevelopment, and its boundary roughly overlaps with Bup-Jeong-Ri(法定里: a legally defined village).

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Evaluation of the Basic Unit of Irrigation water used on Golf Courses in Jeju Island (골프장 관개용수 원단위 산정에 관한 연구)

  • Park, Won-Bea;Yang, Sung-Kee;Kim, Bong-Seok;Moon, Duk-Chul
    • Journal of Environmental Science International
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    • v.20 no.6
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    • pp.775-782
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    • 2011
  • The purpose of this study was to evaluate the basic unit of irrigation water on golf courses in Jeju Island. The amounts of rainwater and groundwater used on 20 golf courses have been monitored for this study. The characteristics of rainwater and groundwater from the selected 20 golf courses were analyzed based on the existing data that had been collected for three consecutive years from 2006 to 2009. The range of monthly irrigation water (groundwater + rainwater) used was about $13,200\sim55,600\;m^3$/month, with average of $36,600\;m^3$/month. In the respects of the amount of annual water used, groundwater was recorded as $163,500\;m^3$/year, and rainwater was recorded as $275,400\;m^3$/year. Thus, the total annual irrigation water used was approximately $439,000\;m^3$/year. The correlation (R2) between golf course lot size and average amount of monthly irrigation water used was 0.65, and the monthly basic unit per golf course area ($1,000\;m^2$) was calculated as $60\;m^3$.

A Design of Teaching Unit on Series of Number Sentences with Patterns. (규칙성이 있는 수식을 소재로 한 교수단원 설계 연구)

  • 박교식
    • School Mathematics
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    • v.4 no.2
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    • pp.297-316
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    • 2002
  • In this paper, a teaching unit on series of number sentences with patterns is designed according to Wittmann's perspectives. In this paper, series of number sentences wish patterns means number sentences in which some patterns are contained. especially, seven kinds of number sentences wish patterns are offered as basic materials, and fifteen tasks based on these basic materials are offered. These tasks are for ninth grade students and higher grade students. These tasks heap students to recognize patterns, and to understand mechanism underlying in those patterns by looking for patterns and proving whether these patterns are generally hold. As working on these tasks, students can reinforce meaning of algebraic expression, its manipulation, and concept of number series. Students also can reinforce mathematical thinking such as analogical thinking, deductive thinking, etc. In this point, this teaching unit reveal important objectives, contents, and Principles of mathematics education. This teaching unit can also be rich sources for student's activities. Especially, for each task's level is different, each student's personal ability is considered fully. Since teachers can know mathematical facet, psychological facet, and didactical facet holistically, this teaching unit can offer broad possibilities for experimental studies. SD, this leaching unit can be said to be substantial. In this paper, this leaching unit is not applied in classroom directly. Actually such applying in classroom is suggested as follow-up studies. By appling this teaching unit in various classroom, some effective informations for teaching this teaching unit and some particular phenomenons in those teaching processes can be identified, and this teaching unit can be revised to be better one.

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