• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 추계학술대회 논문집 전력기술부문
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• pp.150-152
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• 2008

It is necessary to improve the time efficiency in the high power testing station because tests are mainly performed by high-priced equipment. Minimizing a human error through building the database of relevant standards is possible to expect reliable tests. And also, application program that is properly customized for the certain laboratory's power system will help test engineer to easily analyze the phenomenon that is happened in short-circuit and load switching tests. This paper introduces the several functions of the application program that is developed in order to realize these requirements.

• 한국독성학회:학술대회논문집
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• 한국독성학회 2006년도 추계학술대회
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• pp.95-101
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• 2006

Compare to the toxicity tests using experimental animals, the GLP application and compliance in toxicity studies using cell culture systems may be less straightforward elucidated in the two documents published by the OECD Working Croup on GLP 'The Application of the GLP Principles to Short Term Studies (1999)' and 'The Application of the Principles of GLP to in vitro Studies (2004)' The object of this presentation is to show how to interpret the GLP principles and to apply with actual performances in a well known toxicity test using cell culture, chromosome aberration study. The presentation will cover test substance, test system (cell line), study environment management, documentation, quality assurance, and study protocol and report.

• 한국건축시공학회지
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• 제13권6호
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• pp.627-633
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• 2013

최근에는 생활수준 향상으로 인간친화적인 공간창조 등 의장적인 측면에서 다양한 요구가 나타나고 있다. 본 연구에서는 무주태권도원의 2개의 블랙콘크리트 교량에 기존연구에서 얻어진 카본아미노실리카블랙 고성능 감수제(CASB-SP)를 적용하기 위한 Mock up test와 현장적용사항에 대하여 보고하고자 하였다. Mock up test 결과 일반적인 품질 항목은 양호하게 나타났고, 백화방지와 관련한 발수제 도포는 에폭시계가 가장 양호한 것으로 나타나 현장적용에 활용하였다. 현장적용 결과 역시 기초적 특성은 모두 양호 하였고, 검정색 색상구현도 양호하였는데, 기존의 카본블랙 분말 색소를 이용하는 경우보다 시공성, 품질 모두 양호하면서 30 % 정도의 저렴한 경제성도 확인할 수 있었다.

• 한국도로학회논문집
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• 제17권3호
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• pp.35-47
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• 2015

PURPOSES : A tack coat has been utilized to increase the bond performance between the surface layer and base course (intermediate course) at various road pavement sites. This is similarly true in other nations. Based on this connection, the objective of the present study is to evaluate the properties of hot mix asphalt (HMA) mixtures with an RSC-4 or BD-Coat and determine the application rate of the tack coat. METHODS : The HMA specimens were manufactured using superpave gyratory compaction. The HMA mixtures were composed of a 5-cm thick surface layer and a 10-cm thick base course. An impact hammer resonance test (IHRT) and a static load shear test were conducted to evaluate the performance of the HMA mixtures with a tack coat. From these tests, the dynamic moduli related to the high-frequency resistance and interlayer shear strength (ISS) of HMA could be obtained. RESULTS : The results of the dynamic moduli of HMA are discussed based on the resonance frequency (RF). To check the accuracy of the IHRT, we conducted a coherence analysis. A direct shear test using the application of a static load test was carried out to evaluate the interlayer shear strength (ISS) of HMA. CONCLUSIONS : The maximum ISS was demonstrated at an RSC-4 application rate of 462 gsm, and the maximum dynamic modulus was demonstrated at an RSC-4 application rate of 306 gsm. By averaging the results of the ISS, the maximum ISS values were obtained when a BD-Coat application rate of 602 gsm was applied.

• 한국컴퓨터정보학회논문지
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• 제18권8호
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• pp.105-111
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• 2013

본 논문에서는 스마트 센서 응용 소프트웨어를 테스팅하기 위한 효율적인 방법인 가상 센서 시스템을 제안한다. 센서 응용 소프트웨어를 테스트하는 보편적인 방법은 테스트 보드에 센서를 직접 연결시켜 테스팅 환경의 센서 측정값으로 응용소프트웨어를 테스팅 하는 것이다. 센서 측정값을 입력으로 센서 응용 소프트웨어를 테스팅함으로 발생하는 문제는 테스트 데이터가 제한적이라는 것이다. 즉, 테스트 데이터가 센서로부터 생성되기 때문에 소프트웨어 테스터가 테스트 데이터를 조절하지 못하는 문제가 있다. 이러한 문제를 해결하기 위해 가상센서 시스템을 제안한다. 가상 센서 시스템은 소프트웨어 테스터가 센서의 측정값을 조절할 수 있게 한다. 가상 센서 시스템에서 센서 선택, 센서 특성화, 출력 패턴 정의의 세 단계를 통해 가상 센서를 정의한다. 가상 센서 시스템을 통해 조절 가능한 센서 측정값을 사용함으로써 센서 응용 소프트웨어에 대한 효율적인 테스트가 가능하다. 본 연구의 유용성을 보이기 위해 가상 센서 시스템을 안드로이드 앱의 센서 프로그램에 적용해 보고 실험 결과를 보인다.

• 한국가정과교육학회지
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• 제1권1호
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• pp.19-31
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• 1989

The purpose of this study is 1) to find out the general tendency of high school girls’recognition and application of Home Economics course 2) to find out the variables influencing on the recognition and application of Home Economics Course 3) to find out the relationship between recognition and application of Home Economics Course. The subjects of this study were 639 high school girls of third grade in Chunnam province including Ko-heung Kun. The questionaire was used as a methological instrument. The statistics used for data analysis were x$^2$-test, T-test and F-test. The major findings were as follows. 1. The general tendency about recognition and application of Home Economics Course. A third of 639 subjects answered that Home Economics Course was helpful for their livers. 45.1% of the subjects felt that Home Economics Course was eaiers to study than the other courses required in High school. 31.9% of the subjects liked Home Economics Course while 11.9% of subjects disliked it. 79.7% of the subjects wanted more practical studies and practices than theoretical studies in class of Home Econmics Course. The degree of application of Home Economics Course was low level； average score was 19.6 out of 30 points. 2. Variables related to the recognition and application of Home Economics Course. Variables influencing on the recognition toward Home Economics Course were the degree of helping housework, the degree of happiness as a female, and the degree of satisfaction with home life. The higher the level of income, happiness as a female and the satisfaction with home life, the higher the application score of Home Economics Course. 3. Relationship between recognition and application of Home Economics Course. There was a positive relationship between recognition and application of Home Economics Course. Students who showed affirmative responses to Home Economics Course, their application scores of home Economics Course were higher than those of students who showed negative responses.

• 한국자동차공학회논문집
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• 제19권6호
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• pp.90-96
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• 2011

In this study, the characteristic of fractured portion and shape on solder joints were investigated according to the thermal shock test for Automotive Application Component using Sn-3.0Ag-0.5Cu solder, which has a outstanding property as Lead-free solder. The value of pull and shear strength was decreased in principle after 432 cycles thermal shock test. In addition, fracture mode was verified by using EDS and SEM to observe fractured shape on the solder joints before and after thermal shock. In before thermal shock test, the fracture mode revealed typically solder layer's fracture mode. In after thermal shock test, we identified multiple fracture mode of the ductile and brittle fracture. Even though same composition of solder was used to experimental for estimating. the fracture mode varied on the fracture portion's height and the directional angles of shear strength. In conclusion, we identified that mechanical strength was affected on the solder layer's fracture mode.

• 열처리공학회지
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• 제13권1호
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• pp.10-15
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• 2000

Evaluation of long term stability of the Brinell standard hardness tester was carried out to secure its application as a national standard in Brinell hardness. Accuracy and repeatability in load application were tested through evaluating errors in hardness measurement of certified reference blocks. All of those requirements in KS as well as ISO specifications were satisfied by this standard hardness tester. In addition to this, long term stability test of automatic indentation measurement system was carried out. The scattering range was almost the same with its error range. To figure out an optimum test condition for better repeatability and long term stability, the effect of load variation, load application speed and time have been studied using orthogonal array experimental plan. It was found that the best combination is $30{\mu}m/s$ of load application speed and 25 seconds of load application time.

• International Journal of Computer Science & Network Security
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• 제21권11호
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• pp.59-66
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• 2021

Many incidents of Carbon Monoxide (CO) poisoning have occurred because of people being unaware of its presence. There are currently available systems on the market, but they are limited to measuring CO in a certain area and lack vital functions. Additionally, little to no evidence-based information on their quality was available. Thus, a mobile application for detecting CO gas leakage in a vehicle and critical features to assist victims was developed. A usability and functionality test were conducted to determine the product's quality utilizing nine usability and six functionality task scenarios (n=5). Then, a System Usability Scale test was performed to obtain system satisfaction, usability, and learnability (n=50). The usability and functionality test shows that all the tasks given for both tests were 100% successful. The overall score obtained for SUS was 71.4, which indicates good acceptance and usability. Around 20% of respondents claimed that they would need the support of a technical person to be able to use the application and that they needed to learn a lot of things before they could use the application, which indicates the overall high learnability of the application. The result provides empirical evidence that the CO gas leakage detection mobile application is successful and receives good usability, functionality, acceptability, learnability, and satisfaction assessments. DetGas could benefit automobile owners and other stakeholders by mitigating the risk and harm associated with gas leaking that exceeds the safe limit.

• JSTS:Journal of Semiconductor Technology and Science
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• 제14권3호
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• pp.345-355
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• 2014

Today's System-on-a-Chip (SoC) is designed with reusable IP cores to meet short time-to-market requirements. However, the increasing cost of testing becomes a big burden in manufacturing a highly integrated SoC. In this paper, an efficient parallel scan test technique is introduced to minimize the test application time. Multiple scan enable signals are adopted to implement scan architecture to achieve optimal test application time for the test patterns scheduled for concurrent scan test. Experimental results show that testing times are considerably reduced with little area overhead.