• 실천공학교육논문지
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• 제11권2호
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• pp.239-249
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• 2019

현재 직업능력개발훈련에 대한 재정 지원은 NCS 직종 분류에 따라 설정된 NCS 기준 단가에 따라 집행되고 있다. 이러한 기준단가 제도는 훈련분담금-지원금 제도가 운영되는 경우 그에 필요한 행정 부담을 경감시켜주는 장점을 갖고 있다. 본 논문에서는 현재 NCS 기준단가가 훈련과정별 수강료를 기준으로 함에 따라 직업훈련 정책의 사회통합적 기능을 왜곡시킬 수 있음을 지적하였다. 앞으로 합리적 개선 방안 모색을 위한 기초로서, 훈련기관에서 책정하는 훈련과정별 수강료에 어떤 요인들이 영향을 미치는지 분석하였다. 그 결과 실제로 훈련기관의 독점적 성격이나 훈련참여자의 높은 지불의사가 수강료에 영향을 미침을 확인할 수 있었다. 따라서 향후 정부의 직업능력개발훈련에 대한 재정지원에서 이러한 영향을 제거하고 실제 훈련공급비용에 가까운 지원이 이뤄지도록 함으로써 훈련정책이 사회적 통합성 제고에 기여하도록 해야 할 것이다. 더 나아가 근본적으로 모든 훈련과정의 정확한 훈련공급비용을 보전해 줄 수 없다면 정부의 정책적 판단을 중심으로 하는 지원 기준 마련이 필요하다.

• 한국물환경학회지
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• 제28권2호
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• pp.224-231
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• 2012

It is necessary to develop flow duration curve (FDC) on each unit watershed in order to analyze flow conditions in the stream for the management of Total Maximum Daily Loads (TMDLs). This study investigated a simple method to develop FDC for the general use of the curve. A simple equation for daily flow estimation was derived from the regression analysis between the 8-day interval flow data of a unit watershed and the daily flow monitoring data of an adjacent upstream region. FDC can be prepared with the calculation of daily flow by the equation for each unit watershed. An annual and a full-period FDC were drawn for each unit watershed in Guem river basin. Standard flow such as low and ordinary flow can be obtained from the annual FDC. Major percentile of flow such as 10, 25, 50, 75 or 90% can be obtained from the full-period FDC. It is considered that this simple method of developing FDC can be utilized more widely for the calculation of standard flow and the assessment of water quality in the process of TMDLs.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제23권3호
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• pp.117-134
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• 2020

현행 교육과정에 기초할 때 학생들은 3학년 시기에 분수 개념을 처음 학습하게 된다. 이때 전체-부분 관계로서의 분수로 도입되지만, 이후 가분수, 대분수 등으로 분수의 아이디어가 확장되면서 측정으로서의 분수가 자연스럽게 출현한다. 분수의 여러 의미 중 전체-부분 관계로서의 분수, 측정으로서의 분수가 혼재하는 상황에서 학생들이 분수 개념을 충분히 이해하기 위해서는 분수 지도 시 주어진 분수의 단위와 전체가 무엇인지 이해하고 파악하는 경험을 적절히 제공해야 한다. 이에, 본 연구에서는 분수의 단위와 전체에 관한 초등학교 수학 교과서의 내용을 고찰하고, 2015 개정 교육과정에 따른 수학 교과서에 새롭게 도입된 '부분을 보고 전체 그리기'에 대한 초등학교 3학년 학생 60명의 이해를 분석하였다. 분석 결과에 따른 논의로부터 분수 개념 지도를 위한 교수학적 시사점을 도출하였다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.1092-1096
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• 2011

The "standard regulation" of the vehicles from "urban transit law" are being adopted to electric multiple unit in domestic. In the standard regulation, there are two types for EMU. One is heavy EMU for Seoul. The other is large EMU for Pusan, Daegu, Gwangju, Daejeon, Incheon. Korea Railroad Research Institute, with the assistance of the Ministry of Land, Transport and Maritime Affairs, "advanced EMU development project" are progressed, and 6th year started at September, one unit to six cars is completed. Now "urban transit vehicle performance tests are on the current progress. The main characteristics of AUTS(Advanced Urban Transit System) are as follows. One inverter control one motor, DDM(Dircet Drive Motor), no driving gear, plug door and steps, mounting and maintenance costs down, passenger convenience improvement. This paper describes the key features the next generation EMU, and performance test results, and the commercial success method of national R&D business.

• 한국산업보건학회지
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• 제18권2호
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• pp.115-121
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• 2008

In winter season, the survey was performed in three commercial office buildings in the metropolitan Seoul, Pusan, and Gwangju city. The purpose of the survey was to evaluate the effectiveness of ventilation for offices in commercial buildings. The data were compared to standard of applicable to the indoor ventilation in office. The results indicated that the most commercial office buildings used the air handing unit and fan coil unit as HVAC system, and the intake amount of fresh outdoor air were very inadequate to compared to the ASHRAE standard value of $0.57\;m^3/min/person$. Also the surveyed all commercial office building used the HVAC system as a meas of controlling temperature for office indoor air. Ultimately, these results presented that there were possibility of evoking indoor air quality problems by the insufficient ventilation.

• 전자공학회논문지A
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• 제28A권11호
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• pp.915-922
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• 1991

This research paper presents an ALU unit using 1.0$\mu$m CMOS technology capable of doing IEEE standard single and double precision floating poing calculation within 32ns (2 clock) at 60 MHz clock speed. This 32ns speed was achieved by using 9ns 1's complement arithmetic 54 bit carry select adder instead of previous 2's complement adders. On the first cycle, this adder is used for addition or subtraction and the second cycle uses this adder for rounding. This reduces the number of required adders from two to one. Speed improvement is 2 to 5 times compared with previous 40MHz design. Design goal was 60MHz, however, this unit is functioning at 80 MHz at room temperature.

• Journal of information and communication convergence engineering
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• 제8권3호
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• pp.312-316
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• 2010

Conformal mapping has been a familiar tool of science and engineering for generations. The methods of numerical mapping are usually classified into those which construct the map from standard domain such as the unit disk onto the 'problem domain', and those which construct the map in the reverse direction. We treat numerical conformal mapping from the unit disk onto the Jordan regions as the problem domain in this paper. The traditional standard methods of this type are based on Theodorsen integral equation. Wegmann's method is well known as a Newton-like efficient one for solving Theodorsen equation. An improved method for convergence by applying low frequency pass filter to the Wegmann's method was proposed. In this paper we propose an effective algorithm for numerical conformal mapping based on the improved method. This algorithm is able to determine the discrete numbers and initial values automatically in accordance with the given region and the required accuracy. This results come from analyzing the shape of given domain as seen in the Fourier Transform.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2004년도 추계학술대회 논문집
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• pp.245-250
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• 2004

The purpose of this study is to understand the classified advantages and weak points of each landscape predictable simulation methods & techniques and to examine the suitability of through or selecting the predictable method suitable for present skill range and on studying the case of resident district unit plan. Therefore, we examined and evaluated through the case study of two sites. The results are as follows. It was very available to process the skill of mapping and picture combining method together at once. But, there was a limitation that is not flexible in the range of error on accuracy, so it was necessary to practically use the equipment and to study the theory. Providing the standard suitable for regional landscape character in each evaluation standard was also necessary.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2012년도 춘계 학술논문 발표대회
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• pp.197-200
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• 2012

Concrete has cracks from shrinkage that necessarily result from in hardening process. Shrinkage-reduced concrete developed for crack reduction was utilized at a sample construction project. As a result, it is confirmed that crack initation ratio was remarkably reduced when compared to the case of normal concrete utilization. Additional sample project is supposed to use delay joints as well as srinkage-reduced concrete. Subsequently, the result will be reported. The greatest factor which affects in drying shrinkage is unit quantity of water. However, there are a lot off difficulties in field supervision because proper measuring means is not presented in present standard. Therfore, problems depending on ready-mixed concrete concrete companies should be improved by preparing the related standard assoon as possible.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1988년도 전기.전자공학 학술대회 논문집
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• pp.926-929
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• 1988

In this paper, the implementation of NIU (Network Interface Unit) for Token Passing Bus network is studied. The network is based on the IEEE 802.4 standard, which is the basis of MAP. IBM-PC is chosen as host station. The structure of the network and NIU is investigated and the implementation is illustrated. The logical ring constructed following the standard. Transmission and reception of data are tested. The experimental results are referred.