• Title/Summary/Keyword: 대체인력

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Development of an Automatic Comprehensive Condition Diagnosis System for Inductive Loop Detector Using Magnetic Field (자기장을 이용한 루프검지기 자동진단시스템 개발)

  • Kim, Nam-Sun;Lee, Seung-Hwan;Oh, Young-Tae;Lee, Choul-Ki;Kang, Jeung-Sik
    • Journal of Korean Society of Transportation
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    • v.23 no.5 s.83
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    • pp.123-134
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    • 2005
  • This research aims at developing a new method which can replace the existing method. known as the quality factor(Q factor) method by an L-R-C test for use in the performance test of inductive loop detectors(ILD) being installed and maintained. In this study, a sensor to detect a magnetic field in terms of frequency and intensity, a method to collect field data, the method of analysis, and the method of diagnosis were developed. An automatic diagnosis system which was developed to overcome those drawbacks has the following features : First, field data is collected automatically by a test vehicle equipped with magnetic field sensors that is running can be said to along the roadway and. thus, the new system completely overcome the roadway and, thus, the new system can be said to completely overcome the inefficiency of the existing method second, since the magnetic fold generated from the ILD is the final output of the whole system of ILD, the existing problem has been solved. third. since each of the detection area by height is collected by the magnetic sensors installed by height. a basic for the identification of the vehicle types to be detectable and the setting of adjustment factors has been made. For the automatic diagnosis system developed during in this study, a reliability test was carried out by comparing vehicle times of ILD installed ideally.

수박 밀도 실시간 계측시스템 개발

  • 최규홍;최동수;이강진;손재룡
    • Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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    • 2003.04a
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    • pp.126-127
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    • 2003
  • 원예산물의 밀도나 비중은 내부성분, 숙도, 내부붕괴(internal breakdown)와 같은 생리장해에 큰 영향을 받기 때문에, 밀도를 측정함으로써 내부품질에 대한 간접적인 판정이 가능하다고 보고되고 있다. 이 연구는 수박의 밀도와 당도와의 상관관계를 구명하고자 수행하였으며, 이를 위해 밀도의 실시간 계측시스템을 개발하였다. 현재 농산물의 밀도를 어느 정도 측정 정밀도를 유지하면서도 신속하게 측정할 수 있는 방법은 부력법(platform scale method)이다. 이 방법은 일정 크기의 용기에 물을 가득 채운 후 대상물을 담가 배제된 물의 무게를 측정하여 밀도를 환산한다. 그러나 매번 측정할 때마다 물을 보충하고, 물을 계량해야하는 등 전처리과정이 복잡하고, 1회 측정하는데 3~5분 정도가 소요되는 단점이 있고, 또한 인력 측정시 반복간 오차가 클 것으로 예상된다. 따라서 이 연구에서는 이 같은 계측상의 번거로움을 해소하고 동시에 신속하고 반복간 측정정밀도를 높일 수 있도록 수박 밀도 실시간 계측시스템을 설계 제작하였다. 시스템은 투명아크릴 수조($\Phi$400$\times$500), 로드셀, 프레임, 채반, 전기모터, 제어장치 및 컴퓨터로 구성하였다. 밀도 계측은 인장형 로드셀(CAS SB-20L, Max. 20kg)을 사용하여 대기중에서와 수박을 완전히 물에 잠기도록 한 후 무게를 각각 측정하여 밀도를 환산하였다. 밀도 계측시스템에 이용한 AD변환기의 분해능은 12bit이고, 수박의 무게 측정범위를 4~10kg로 가정할 때 20kg 로드셀의 1 digit(1bit)로 발생되는 오차는 0.09~0.24%FS 이었고, 따라서 이 시스템의 밀도 해상도는 0.001g/㎤이하였다. 시스템 평가를 위해 탄력이 좋은 고무풍선에 수박 크기 정도로 물을 채워 고정채반에 넣고 밀도를 측정한 결과 1.002g/㎤을 나타냈다. 즉 물의 이론밀도인 1g/㎤에 근접한 값을 보여 정확한 밀도 계측이 가능한 것으로 판단되었다. 또한 밀도 계측시스템의 측정 반복간 정밀도를 파악하기 위해 수박 6개를 임으로 선정하여 3반복 측정 시험한 결과, 측정표준편차가 0.001~0.004g/㎤로 해상도보다는 다소 높았으나 대체로 양호한 결과를 나타냈다. 수박 35개를 이용하여 개발 계측시스템과 사람이 직접 부력법으로 밀도를 측정 비교한 결과, 계측시스템에 의해 측정된 수박 밀도가 사람이 측정했을 때 보다 낮게 측정되었다. 수박의 외관인자(무게, 길이, 직경, 체적), 밀도와 당도의 상관관계 구명시험을 위해 원예연구소 시험포장에서 재배된 삼복꿀수박 총 74개를 공시재료로 하였고, 시험은 출수일별로 10~14개씩 수확하여 외관인자, 밀도, 당도를 각각 측정하고, 이들 인자들간의 상관관계를 구명하였다. 외관인자들간에는 높은 상관관계를 보였으나, 외관인자들과 밀도, 외관인자들과 당도, 밀도와 당도와는 매우 낮은 상관관계를 나타냈다.

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A Study for Promotion Strategies of the Smart Grid in Convergence technology (융합기술을 활용한 스마트그리드 촉진전략에 관한 연구)

  • Mun, Jeong-Min;Leem, Wook-Bin;Cho, Sae-Hong
    • Journal of Digital Contents Society
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    • v.15 no.4
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    • pp.513-520
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    • 2014
  • The Smart Grid is next-generation power system materialized Convergence and Integration of power technologies and Information Technologies. And this system is the next generation power system optimizing energy efficiency via real-time information exchanges grafting the information technologies upon present power networks which are web-net. The introduction of smart grid can be embodied for latitude, distributed and cooperated network by inter-active exchange of energy information between electrical power provider and consumer previous uni-directional electrical power supplement. Therefore in this paper, we proposed Convergence technologies - Smart power grid, Smart Place, Smart Renewable and Smart Electricity Service - to make smart-grid succeed via analyzing the datum. And we scoped on Convergence and Integration technologies, which could be used for smart-power-grid that is most important factor to replace previous power industries. And we brought out the expecting industrialize timing and interesting aspects and analyzed the result with survey of professional worker from institute, research center, power plant and business of power industries. And proposed the essential policies for the government and power-control-business companies based on the datum and survey output.

A Study on Curriculum Guidelines for Computer Education based on the analysis of Status Quo in IT Advanced Countries (해외 주요국의 현황 분석에 기초한 우리나라 컴퓨터교육의 교육과정 방향)

  • Kim, Mi-Ryang
    • The Journal of Korean Association of Computer Education
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    • v.8 no.3
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    • pp.43-60
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    • 2005
  • Teaching computer and ICT skills in K-12 helps to bridge the digital divide of the students at the minimum cost, and provides them with a chance of getting a Quality of life as well as a Quality of work in the future. From examining the education policies of U.S., EU, Canada, and other countries, concerning computer education, several factors, including vision and national-level policy, Quality of manpower, needs for computer-related technology, structure of IT industry, overall demand for IT specialists, have been identified as those with major impacts on the curriculum of computer education. Based upon the analysis of domestic key factors, three levels of computer education program are suggested. At the most basic and least controversial level, basic ICT-skill program for effective learning needs to be provided for every student. Next level is concerned with improving the Quality of life and work. A program for introductory level of computer science can be provided as extra-curricular classes for bright and eager students, who might want to be computer expert or specialists.

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병원에서의 산업보건관리

  • Jeon, Gyeong-Ja
    • Korean Journal of Occupational Health Nursing
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    • v.2
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    • pp.40-51
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    • 1992
  • 본 연구는 병원에서의 산업보건관리 실태를 파악하기 위하여 전국에 있는 병원을 대상으로 1992년 12월 1일부터 1993년 1월 23일까지 설문조사를 설시하였다. 설문조사에 응당한 병원은 41개병원으로 회수율은 51.9%였다. 조사에 이용된 설문지는 산업안전보건법 내용을 기초로 하여 본 연구자가 작성한 것이며 안전보전에 관한 제반 규정, 안전보건관리체계, 근로자건강관리, 작업환경관리, 보건교육, 보건관련시설, 질병 및 상해에 대한 보상 등에 관한 45개문항으로 구성되어 있다. 분석결과는 다음과 같다. 첫째, 전체 병원 중 68.3%가 안전보건관리 규정이 있다고 답하였으며, 77.5%의 병원이 단체협약 중 근로자의 안전과 보건에 관한 조항을 포함시키고 있는 것으로 나타났다. 단체협약에 포함된 내용 중에는 정기건강진단(23.7%)과 질병 및 상해에 대한 보상(20.9%), 안전보건위원회의 구성(18.1%)등이 많았다. 둘째, 대상 병원중 66.7%가 안전보건관리책임자, 관리감독자, 안전담당자를 두고 있는 것으로 나타났고, 근로자수가 1,000명 이상인 병원은 83.3%가 이들 인력을 선임하고 있다. 그러나, 보건관리자와 안전관리자를 전담으로 두고 있는 경우는 한 곳도 없었으며 50%이내에서 겸직으로 선임하고 있었다. 또한, 안전보건위원회를 운영하고 있거나 노사협의회로 이를 대치하고 있는 병원은 54.2%로 절반 수준에 머물렀고, 그나마 정기적으로 운영을 하고 있다고 답한 병원은 3개 병원 밖에 되지 않았다. 세째, 근로자 건강관리를 위한 건강진단 실시 현황을 보면, 채용시검진 97.6%, 일반건강진단 100.0%, 특수 건강진단 24.4%가 실시하고 있었다. 건강진단에서 주로 실시하고 있는 항목은 흉부 X선검사, 시력, 혈압, 혈청GOT/GPT, 체중, 신장등이었다. 그러나, 병원에서 감염될 수 있는 기회가 높은 간염항원/항체검사의 실시율은 85.7%로 아직도 실시하지 않는 병원이 있음을 알 수 있다. 네째, 작업환경관리를 위하여 정기적으로 환경측정을 실시하는 병원은 21.6%였고 주로 측정하는 항목은 방사선이었다. 특히 소음, 조명, 분진에 대한 측정이 이루어지지 않음은 근로자뿐아니라 환자의 안위에도부정적인 영향을 미칠 수 있다. 다섯째, 안전한 작업과 근로자의 건강을 위하여 정기적인 보건교육을 설시하고 있는 병원은 불과 5.6%였다. 교육내용은 주로 안전에 관한 것이었다. 여섯째, 근로자의 일상적인 건강문제를 해결해주는 의무실을 독립적으로 마련하고 있는 병원은 한 곳도 없었고, 교대근무자나 당직자를 위한 수면시설은 44.7%, 작업 후에 사용할 수 있는 샤워시설은 35.1%의 병원이 마련하고 있었다. 일곱째, 근무중 다치거나 병에 걸렸을 때 치료비에 대한 부담은 대체로 병원이 하고 있으며 치료기간 중 근무는 병가나 휴직으로 처리되고 있다. 이는 병원이 산재보상보험법에 적용을 받지 않은 사업으로 분류되어 있는 현실에 기인된 것으로 보상과 관련된 부담을 병원이나 근로자 모두가 안게 되는 결과를 초래하게 되는 것이다. 이상에서 볼 때 병원근로자를 위한 산업보건관리는 주로 건강진단과 질병 및 상해에 대한 보상제도가 이루어지고 있는 실정이다. 그러므로 질병의 예방이나 악화방지 나아가 건강증진을 도모하기 위한 지속적인 노력을 기울이고 있는 병원은 전무한 상태임을 알 수 있다. 이러한 현실을 병원근로자를 위한 산업보건관리에 대한 인식이 전반적으로 부족함을 드러내는 것으로 이를 개선하기 위한 보다 적극적인 노력이 시급히 요청되고 있다.

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A Study on the Effect of Entrepreneurship and Self-Efficacy on Knowledge Management: Focusing on Female CEO (기업가정신과 자기효능감이 지식경영성과에 미치는 영향연구: 여성CEO 중심으로)

  • Park, Cheol Woo
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.11 no.6
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    • pp.11-26
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    • 2016
  • Businesses have to survive and thrive in both domestic and international environments. In order to resolve these problems, new alternatives have been presented. These include the importance of women's resources and entrepreneurship of female CEOs. The sensibility, delicacy, creativity as well as the intuitive power of female CEOs, actively enables them to cope with the ever-changing environment. Because of the rapidly changing circumstances, the above mentions women's attributes are highlighted thus, causing women's roles in society to shift from their traditional tendencies to finding careers and their own identities. Due to this change in social roles, social interest and the values of female CEOs are being reevaluated. Accordingly, the conceptual consideration of female entrepreneurship (innovation, enterprise, risk sensitivity) as well as the factors to be considered for the entrepreneurship of female CEOs in order to promote knowledge management performance was derived in this research. The deducted implication of this research is that generally, the enterprise and risk sensitivity of entrepreneurship affect the knowledge management performance of female CEOs. It is therefore proved that in the case of female CEOs, entrepreneurship and self-efficacy are linked, allowing them to achieve the desired outcome for a specific task performance. Female CEOs are capable of company management through the mediating process of their enterprise, risk sensitivity, and self-efficacy and with faith in their knowledge management, will be able to achieve high performance. Therefore, using strengths and nature peculiar to women, women's economic activities derived from knowledge management based on entrepreneurship will not only help overcome the long-term economy crisis but also lead to high economic growth and development. This will be a dynamic force for the nation's new growth with financial means. The comparative study of existing results will also contribute in suggesting the direction of policies that will enable the success of female CEOs in entrepreneurship.

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A study for Secure the Reliability of Automated Guided Vehicle Remote Control System (무인운반차 RCS(Remote Control System)의 신뢰확보를 위한 연구)

  • Jeon, Hyong-Mo;Kang, Sang-Won
    • Journal of Digital Convergence
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    • v.15 no.5
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    • pp.207-215
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    • 2017
  • With rapid development of IT technology and biotechnology, human lifespan is extended rapidly, and we are living in the era where aging becomes the social issue. Due to this aging problem, manpower is mainly replaced by Automated Guided Vehicles (AGV) in manufacturing factories or warehouse logistics transportation. Rate of AGV use increases sharply every year. AGVs, which were used only in Smart Factories, extends its usage into indoor and outdoor operation by changing their usages to container transportation that can carry huge containers in the harbor. With the expansion of AGVs usage, the importance of RCS (Remote Control System) is also increased. In this study, we surveyed and analyzed the characteristics and technology trends of technical features of AGV's RCS that are developing in various ways to establish quality evaluation system of AGV RCS. Based on this, and by referring to international quality assessment standards, ISO/IEC 25000 series, we derived evaluation items on functional suitability and usability to secure reliability of AGV RCS. Also, it is our intention to develop evaluation model using those derived usability and reliability evaluation items.

Estimating Concrete Compressive Strength Using Shear Wave Velocity (전단파 속도를 이용한 콘크리트의 압축강도 추정연구)

  • An, Ji-Hwan;Nam, Jeong-Hee;Kwon, Soo-Ahn;Joh, Sung-Ho
    • International Journal of Highway Engineering
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    • v.10 no.3
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    • pp.171-178
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    • 2008
  • Compressive strength of concrete has been regarded as a very important parameter of the quality control both in new and existing concrete pavement. It has been used a lot as the concrete strength evaluation both in the various-mixture-using laboratory and construction field using the same mixture. An error usually occurs in the test experiments of the strength, even in the test experiments with evenly mixed and compacted specimens of the compressive strength. It is caused by the 'manually operated' compressing testing, or by the specimens preparation with eccentricity. When compressive strength of evenly mixed concrete is investigated by the curing ages at the construction field, there have to be lots of specimens. And it needs much labor and cost. To substitute the endlessly repeated test experiments of compressive strength, presumption of compressive strength, by nondestructive tests, is needed. In this study, elastic waves were used among various nondestructive tests. Compressive strength of concrete was presumed according to the curing ages, by using the shear wave velocity which is not affected by restricted conditions. In the result, shear wave velocity is very closely related to the compressive strength at the evenly mixed concrete.

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Operation Model of On-site Environmental Management Council to Enhance Eco-friendliness in Public Construction Sites (공공 건설현장의 친환경성 제고를 위한 현장환경관리협의회 운영 모델)

  • Sohn, Jeong-Rak;Park, Seong-Sik;Jun, Myoung-Hoon;Song, Sang-Hoon
    • Land and Housing Review
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    • v.3 no.4
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    • pp.423-431
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    • 2012
  • The trends of Green growth and environmentally-friendliness came to be the key development indicator for sustaining global environment for the future. Korean government reflected these trends in the main flows of the national development index. Korean construction industry is concentrating investment on fields related to these trends such as technologies for carbon dioxide deduction, materials or products for environmentally-friendly building and alternative energy development, as well. However, efforts to follow these trends during the construction process as a step for production phrase are not being considered enough. In this study, we analysed current status and points to be improved of on-site environment management by surveying major project owners and representatives of the environmental affairs in the leading companies of those fields. Also, we suggested organizational structure and operation model as a solution for enhancing environmentally-friendliness for systematic approach to manage on-site environment in public construction sites. In addition to these solutions, further approaches such as shifting paradigm of project owners and contractors, securing workforce and practical budget for efficient management activities, developing environmental management manuals, setting standards for evaluation of activities are needed for the stable settlement of on-site environmental management.

Hydraulic Investigation of Pyokkolche Reservoir (벽골제의 수공학적 고찰)

  • Lee, Jang-U
    • Journal of Korea Water Resources Association
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    • v.31 no.4
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    • pp.397-406
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    • 1998
  • The Pyokkolche Reservoir was constructed as a major public project of the ancient agricultural society, 1600 years ago. From a hydraulic point of view, it is considered to have been carried out with a distinguished technology. It should be in particular noticed that for a consecutive banking the main stream was diverted and drained to the Yonpo stream and the dam with same sea levels on its top along the whole length was built in a nearly straight line in spite of the different sea levels between both ends on the bottom. These suggest that the carrying out artifice and surveying technigue of those days were considerably excellent. However, the insufficient plan and design at the time of the construction, the temporary management and the repeated repair works in the later ages caused the Pyokkolche to lose its function. The Changsaenggeo and Kyungjanggeo gate sites being the facilities for sluices composed of a simple span and a vertical lift hand-operated sing a pully. The advantage of the geographical characteristics at both ends of the main dam was scientifically taken to these sites which also functioned as a spillway against a flood. The gate site of Suyogeo must have been located in an entrance to Suwolri, the northern end of the Pyokkolche and Yutonggeo is presumed to have been located on the right of Sangsori, the southern end of the Pyokklche. Keywords : Pyokkolche Reservoir, construction technology, gate site location.

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