• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 1996년도 International Conference on Agricultural Machinery Engineering Proceedings
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• pp.171-190
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• 1996

Quality evaluation of agricultural products has been a subject of interest to many researches for many years. As a results, several nondestructive techniques for quality evaluation of agricultural products have been developed. These methods are based on the detection of various physical properties that correlate well with certain quality factors of the products. This paper presents an overview of various quality evaluation techniques that are based on one of the following properties : density, firmness , vibration characteristic , X-ray and gamma ray transmission, optical reflectance and transmission , electrical properties, aromatic volatile emission, and nuclear magnetic resonance (NMR). The sophistication of nondestructive methods has evolved rapidly with modern technologies. The use of various modern image acquisition techniques, such as solid state TV camera, line-scan camera, X-ray scanning , ultrasonic scanning and NMR imaging, in conjunction with image-processing te hniques has provided new opportunities for researchers to develop many new and improved techniques for nondestructive quality evaluation of agricultural products.

• International Journal of Industrial Entomology and Biomaterials
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• 제5권1호
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• pp.37-43
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• 2002

Eighteen new bivoltine silkworm (Bombyx mori L.) hybrids developed at Andhra Pradesh State Sericul-ture Research and Development Institute, Hindupur are evaluated for 10 economic traits by following two multiple trait index methods, i.e., Subordinate Function and Evaluation Index for their economic merit. The hybrid genotype, APS6${\times}$APS11 with highest Subordinate function value of 8.2432 and highest average Evaluation Index of 61.67 ranked first. This hybrid is adjudicated as most promising hybrid and recommended for commercial use. Further, applicability of Subordinate Function Index Method is tested and recommended for application of multiple trait evaluation similar to Evaluation Index Method as the results obtained are comparable. Further, both these methods can be applied for confirmation of results.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제26권1호
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• pp.109-135
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• 2012

수학 수업에서 요구되는 교사 지식을 '교과 내용 지식', '학습자 이해 지식', '교수 학습 방법 및 평가 지식', '수업 상황 지식'으로 상정하고, 수업 평가 및 교사 지식과 관련된 여러 선행 연구들에 의거하여 본 연구자는 교사 지식 요소 각각에 대한 수업 평가 영역 및 기준 마련을 위한 연구를 수행해 왔다. 본고에서는 지금껏 본인에 의해 수차례 수행된 연구 결과들을 신중히 재검토하여 보다 일관성 있고 체계적으로 수정 보완하고자 하였다. 이때, 각각의 교사 지식에 대한 교사 자신의 자기평가 방법에 따라 측정 용이한, 즉 실제적 활용 가치를 신중히 고려함은 물론, 특히 '수업전', '수업 중', '수업 후'의 상황을 모두 반영한 수학 수업 평가 기준을 새로이 마련하고자 하는데 중점을 두었다. 이처럼, 본고의 연구 결과를 활용하는데 있어서 교사는 수업 전, 수업 중, 수업 후 상황에 국면하게 되고, 교사 지식은 이러한 상황 모두에 요구되나, 실제의 수업 상황에서 모든 교사 지식에 대한 수업 평가 기준을 '동시에' 모두 고려하여 평가, 진단하는 것은 쉽지 않을 일이다. 이에 따라, 교사 자신 및 동료들이 해당 수업에 따라 요구되는 특정의 교사 지식 및 특정의 수업 진행 상황(수업 전, 수업 중, 또는 수업 후)을 선정하여 이에 국한, 집중하여 평가하도록 해야 할 것이다.

• Journal of the Korean Wood Science and Technology
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• 제42권5호
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• pp.590-596
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• 2014

Wooden cultural heritages of Korea have been destroyed by fire in many cases. As a result, a number of methods to protect wooden cultural properties against fire were introduced. A way of protecting wooden cultural properties installations of fire equipments such as sprinkler, fire alarm system, or fire extinguisher. Another way of protecting wooden cultural properties is to treat them with flame retardants for their safety. Development of a very effective flame retardant with a good performance without affecting danchung and wood quality is required. At the same time, methods of evaluating flame retardant treated woods should be devised to assess their efficacy. In this study, combustion characteristics using cone-calorimeter, limit oxygen index, moisture absorption, iron corrosive and weathering were analyzed to evaluate the flame resistance efficacy and performance of flame retardants treated woods. The evaluation methods of flame retardants for wooden cultural heritage were suggested.

• 방송공학회논문지
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• 제10권2호
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• pp.149-155
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• 2005

We have proposed an objective evaluation method using ESNR as the measure of approximation by the visual model, which coincides with MOS, a subjective evaluation method. For two-value images, we have used five kinds of modulation methods: 1) ordered dither, 2) least mean error, 3) pulse density low division, 4) simple two-value, and 5) random dither methods. The purpose of this paper is to investigate the validity of ESNR, by comparing the proposed method together with the existing representative methods such as PSNR and WSNR, with the subjective method MOS. The results of a series of experiments show that the ranking by MOS coincides with ESNR, though does not coincides with PSNR and WSNR.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2002년도 봄 학술발표회 논문집
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• pp.10-11
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• 2002

• 대한안전경영과학회지
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• 제2권3호
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• pp.13-25
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• 2000

This paper reviews and classify fault-tree analysis methods developed since 1960 for system safety and reliability. Fault-tree analysis is a useful analytic tool for the reliability and safety of complex systems. The literature on fault-tree analysis is, for the most part, scattered through conference proceedings and company reports. This paper classify the literature according to system definition, fault-tree construction, qualitative evaluation, quantitative evaluation, and available computer codes for fault-tree analysis.

• 한국도로학회논문집
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• 제19권2호
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• pp.103-112
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• 2017

PURPOSES : In this study, field performance evaluation of crack treatment of pavement and the feasibility of surface treatment of pavement are presented. The performance and cost of preventive maintenance methods have been previously verified, and the methods are being used in many developed countries and cities. However, the performance and cost of the system have not been verified in domestic, field applications. Therefore, in order to improve performance, the field performance is evaluated, and a reasonable cost is proposed. METHODS : Visual Inspection was conducted to evaluate the field application and performance of the preventive maintenance method. In addition, the PCI index was calculated from the results of visual inspection of the application area of the surface treatment method, and the performance life of each method was predicted. For the economic evaluation, life cycle cost analysis was performed using the life cycle cost analysis program. RESULTS :In order to evaluate and quantify the field performance of crack repair material, the residue condition of the pavement surface after crack treatment, rather than the performance of the material, is evaluated. In addition, the crack resistance and performance life of surface treatment methods are evaluated. The cost of currently available treatment methods are compared to the common pavement cut and overlay method, and it is determined that the preventive method is not economical based on life cycle cost analysis. CONCLUSIONS :Because of the characteristics of cracking, it is necessary to conduct the evaluation of currently applied methods and the analysis of the cause of damage, by visual inspection. Moreover, in order to evaluate the performance and economic suitability of the currently applied surface treatment methods, it is necessary to acquire information on application sections by monitoring their long-term conditions and performance.

• 대한산업공학회지
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• 제13권1호
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• pp.61-67
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• 1987

A tool for optimizing simulated discrete variable stochastic systems, SIMICOM was developed and presented in [5]. In this paper an evaluation of its performance and results of comparisons with other popular methods for dealing with simulation-optimization problems will be provided. Based on several test problems it is concluded that SIMICOM dominates those methods.

• 실천공학교육논문지
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• 제16권3_spc호
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• pp.259-265
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• 2024

대학 학부생들의 SW융합 역량을 향상하기 위해서는, 관련 강좌의 개발과 함께 학부생들의 코드 설계 역량을 평가하는 방법이 연구되어야 한다. 기존 연구에서는 코드 결과물에 대해 정성적인 평가방법과 정량적인 상대평가방법이 있었으며, 정량적인 상대평가방법에서는 문제분해깊이 수, 함수재사용 회수와 함수 개수를 측정하여 평가하였다. 본 연구에서는 기존 연구에서 제시되지 않은 평가방법으로서, 코드 설계 시 입력과 출력 정보종류의 수를 제시하는 문제를 이용한 평가방법을 제안하였다. 본 논문에서 제안한 평가 문제들은 입력 정보 종류의 수와 출력 정보 종류의 수를 3개까지 적용하였다. 이를 통해 5가지 코드설계 평가문제를 제시하고 코드설계 점수를 정량적으로 산출하는 방법을 제안하였다. 제안한 평가방법을 적용한 강좌를 통해 100명 학생 응답자들의 코드들을 수집하고 분석하였다. 결과 분석을 통해, 문제분해깊이 수는 입력 정보의 종류 개수에 비례하고, 함수 재사용 회수는 출력 정보의 종류 개수에 비례하며, 함수 개수는 입력과 출력 정보의 종류 총개수에 비례하는 상관성을 나타내었다. 마지막으로 100명 응답자의 평가 점수 분포를 분석하여, 5가지 입출력 정보 조건 평가문제에 따른 코드설계 평가 방법이 유효함을 설명하였다.