• 제목/요약/키워드: Value evaluation

검색결과 8,508건 처리시간 0.032초

퇴비의 부숙도 평가에 있어서 CO2 발생량과 발아지수와의 상관성 연구 (Studies on the Correlation between Germination index and CO2 Emission for Evaluation of the Maturity of Compost Products)

  • 백창현;이명규;김창한
    • 한국축산시설환경학회지
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    • 제4권2호
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    • pp.183-191
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    • 1998
  • This study was carried out to elucidate the correlation between Germination Index(G.I.) and CO2 emission for evaluation of the maturity of compost products. 13 compost samples was used for this experiment. The G.I. test was carried out on the basis of T-N 200ppm. As a result of this research, we found that CO2 emission method was good simple indicator for evaluation of maturity of compost materials, in spite of G.I. The obtain results are summarized as follows ; 1. The correlation value between the G.I. and the CO2 emission was R2 = 0.776. 2. The correlation value between EC(Electric Conductivity) and G.I. was R2 =0.7. 3. The equation calculated from G.I. and CO2 emission was G.I. = -16.7(InCO2) - 6.87. 4. From these results, we found the possibility of estimation for the value of G.I.(T-N 200ppm) from CO2 emission volume under specific condition.

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A Comparison of PSNR, WSNR and ESNR Evaluation Methods for The Two Value Modulated Images

  • Kawasaki Junji;Takeda Kosuke;Kato Kyoto;Iijima Taizo
    • 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.

N-Value를 이용한 기초의 지지력 산정 (The Evaluation of the Allowable Bearing Capacity of Foundations using N-Value)

  • 이강운;박택규;정해운
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2001년도 가을 학술발표회 논문집
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    • pp.281-292
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    • 2001
  • The evaluation of the allowable bearing capacity is the most important step in the design of a foundation. An accurate evaluation of the effect of all factors such as the physical properties of the soil located beneath the area, the size of the area, the depth of foundation, and the position of the water table is impracticable Therefore, the designer is compelled to estimate the allowable bearing capacity on the basis of simple semiempirical rules under cohesionless soils. This paper deals with semiemperical rules for determining allowable bearing capacity based on observed relations between the results of standard penetration test. Additional comparisions between the results of the theoretical methods and the emperical rules are performed to suggest more conservative design for the engineer.

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PERFORMANCE EVALUATION FOR CONSTRUCTION VALUE ENGINEERING STUDY

  • Wei Tong Chen;Hong-Long Chen;Po-Yi Chang;Tsang-Jung Wang
    • 국제학술발표논문집
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    • The 1th International Conference on Construction Engineering and Project Management
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    • pp.347-352
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    • 2005
  • This paper presents an evaluation model for the performance of Value Engineering Study (VES) for construction projects. The proposed model consists of 6 PEGs and 32 PEIs. The expertise of the proposed model was collected from VE experts in Taiwan using two-phase questionnaire survey. One real-life VES of construction projects was used to demonstrate how the proposed model works. The proposed model not only can be used by project owners to appraise the performance of VES team but also be used by the VES teams to conduct self-diagnosis, improvement, and motivation for achieving better performance. Additionally, the proposed model is capable of: (1) clarifying the defects of VES and avoiding committing same mistakes, (2) assisting inexperience team members to implement VES and catch the critical issues of a VES.

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산업 유산 재생지역에 대한 가치 평가 방법에 대한 연구 (Study on the Valuation Method for Redeveloped Area of Industrial Heritage)

  • 쑨리;반영환
    • 한국융합학회논문지
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    • 제11권2호
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    • pp.117-126
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    • 2020
  • 산업유산 재생 지역의 자원 가치를 객관적으로 평가하는 것은 디자인 개선과 서비스 혁신의 중요한 전제 조건이다. 본 연구에서는 산업유산 재생 지역의 자원 가치를 전반적으로 평가하기 위해 정성적, 정량적 방법을 결합한 가치평가 방법(모형)을 제시하였다. (1)재생 지역의 자원에 따른 평가체계 수립(AHP 계층); (2)자원 유형에 따른 평가 코스선택(cvm 또는 사용가치); (3)해당 지역의 각 자원의 가치와 총 가치의 계산. 본 연구에서는 운하 5호 사례에 적용하여 다음과 같은 결과를 얻었다. 해당 지역의 다양한 자원의 가치 순위 및 총 가치; 가치에 영향을 주는 요인은 다양하지만 주로 소득과 관련되는 것으로 나타났다. 나아가 결론은 다음과 같다. 재생지역의 가치는 사용가치와 비사용가치를 함께 구성해야 하며, 동일 요소가 서로 다른 자원의 가치에 미치는 영향이 다르다. 또한 요소별로 동일한 자원에 미치는 영향의 크기가 다르다.

물질주의 가치에 따른 가방 구매행동 연구 (A Study on Bag Purchase Behaviors according to Materialism Value)

  • 이미숙
    • 한국의상디자인학회지
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    • 제24권3호
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    • pp.33-48
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    • 2022
  • This study aimed to investigate bag purchase behaviors according to materialism value. The subjects were 443 male and female adult consumers in their 20s to 50s. The research method was a survey, and the questionnaire consisted of questions on materialism value, bag purchase behaviors, and demographic characteristics. For data analysis, descriptive statistics, Cronbach's α, χ2 test, factor analysis, cluster analysis, ANOVA, and Duncan's multiple range test were performed. The results of this study were as follows. First, materialism value was derived from three factors (happiness pursuit, possession-oriented, and success judgment). Second, subjects could be divided into three groups (happiness pursuit group, success judgment pursuit group, and immaterialism group) based on the materialism value variable. Third, the derived groups showed many differences in bag purchase behaviors. The happiness pursuit group considered all bag evaluation criteria factors (practicality, aesthetics, economy, symbolism) and bag purchasing information sources factors (mass media and personal sources) more than other groups, and showed a tendency to prefer select shops and complex shopping malls as bag purchasing places. In addition, the average annual cost and frequency of purchasing bags of this group were higher than those of other groups. The success judgment pursuit group considered symbolism as a bag evaluation criteria more than other groups, and considered personal sources as bag purchasing information sources more than mass media sources, and preferred luxury stores and department stores as bag purchasing places. On the other hand, the immaterialism group considered practicality and aesthetics as bag evaluation criteria and placed less importance on all information sources than other groups, and preferred Internet shopping malls as purchasing places. This group had the lowest average annual purchase cost and frequency among the three consumer groups. This study suggested that materialism value is a useful variable to segment male and female adult consumer markets effectively, and to understand the bag purchase behaviors of consumer groups divided by materialism value.

고온가열 과정 중 대두경화유의 산화안전성에 관한 연구 (Oxidative Stability of Hydrated Soybean Oil during Heating at High Temperature)

  • 김명애
    • 한국식생활문화학회지
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    • 제23권1호
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    • pp.26-32
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    • 2008
  • : In this experiment, three samples of oils were used. These oils were hydrated soybean oil, pure soybean oil and regular soybean oil. Oil was used after heating at $235-240^{\circ}C$ every four hours term and total heating hours was 16 hours. The physio-chemical analysis and sensory evaluation were performed on these oils. The hydrated soybean oil showed lower acid, peroxide and carbonyl value than the other two oils (p<0.05 or p<0.001). The other two oils were more affected in rancidity than the hydrated soybean oil. In color test, whereas L value lowed during the heating time, a and b value increased during the heating time. The tendency of high L value and low b value in a long-time heating was more apparant on the pure soybean oil and the regular soybean oil than on the hydrated soybean oil (p<0.05). In sensory evaluation, color and rancidity order increased during the heating time. The hydrated soybean oil showed color and rancidity order than the other two oils. In overall quality test, the pure and regular soybean oil that had been used for 12 and 16 hour were not preferable. The hydrated soybean oil that had been used for 16 hour were not preferable. In sensory evaluation, the hydrated soybean oil, the pure and regular soybean oil did not show a apparent difference, although the hydrated soybean oil had a little better scores on the overall quality.

산업 디자인 평가방법의 특성 비교연구 (A comparative study on the characteristics of the evaluation techniques for industrial design proposals)

  • 우흥룡
    • 디자인학연구
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    • 16호
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    • pp.17-25
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    • 1996
  • , \l!ernatives in multi dimensional decision prohlems generally possess numerous attrihutes by which they can be describ('d and compared, The ('\';dllation factors include all attributes that have Ic\'(']s specified by quantitative and qualitativc objectil'l'S, Howev'('f since qualitative factors arc difficul! to quantify as num('ral estimates, these factors have tended to bl' ignored without regard for their importance to human contrnl. In this study, the author adapted :j ('va]uation methods with critrria which have qualitative and qualitative attributes: the Intuitive Evaluation ~1cthods the Accumulativc' Evaluation Model the Benchmarking Evaluation Methods, and studied the corrC'iation between them, The results show that Ill(' :j Mrthods have reciprocal relationships under reliability (r=O, (XX)]] In order to removl' obstacles of desi!;n ev'aluation ( lots of timl' l'llnsumption, constr;lints of placc" difficulties of hu!;!' data procc'ssin!;), it is necessary to be developed a new ('va]uation syst('rn which could prov'idc' effective rat in!; of desi!;n v'alm's 10 make value judw'rnents, , \l!ernatives in multi dimensional decision prohlems generally possess numerous attrihutes by which they can be describ('d and compared, The ('\';dllation factors include all attributes that have Ic\'(']s specified by quantitative and qualitativc objectil'l'S, Howev'('f since qualitative factors arc difficul! to quantify as num('ral estimates, these factors have tended to bl' ignored without regard for their importance to human contrnl. In this study, the author adapted :j ('va]uation methods with critrria which have qualitative and qualitative attributes: the Intuitive Evaluation ~1cthods the Accumulativc' Evaluation Model the Benchmarking Evaluation Methods, and studied the corrC'iation between them, The results show that Ill(' :j Mrthods have reciprocal relationships under reliability (r=O, (XX)]] In order to removl' obstacles of desi!;n ev'aluation ( lots of timl' l'llnsumption, constr;lints of placc" difficulties of hu!;!' data procc'ssin!;), it is necessary to be developed a new ('va]uation syst('rn which could prov'idc' effective rat in!; of desi!;n v'alm's 10 make value judw'rnents,alm's 10 make value judw'rnents,

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크라우드 소싱 접근법을 활용한 기술가치 평가 (Technology valuation utilizing crowd sourcing approach)

  • 최지은;이환수
    • 예술인문사회 융합 멀티미디어 논문지
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    • 제6권6호
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    • pp.403-412
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    • 2016
  • 기술을 이용한 거래 및 투자가 활성화 되면서 기술에 대한 객관적인 평가의 필요성이 증대되고 있다. 그러나 현행 기술가치 평가방법은 신뢰성 및 객관성이 부족한 한계를 가지고 있다. 전통적인 평가방법론인 시장접근법, 수익접근법, 비용접근법 외에도 실물옵션법, 로열티산정법 등 다양한 평가방법론이 연구되고 있으나 시장에서 지배적인 평가방법론은 없는 실정이다. 기술의 가치는 대상에 따라 상대적으로 결정되기 때문에 유사한 기술이라도 동일한 가치 평가방법을 적용할 수 없다. 이에 대하여 소수의 전문가보다 다수 참여에 의한 판단이 객관적이고 나은 결과를 가져온다는 의미의 집단지성 및 크라우드 소싱을 통한 접근은 위와 같은 문제에 대한 대안을 제시해 준다. 본 논문에서는 크라우드 소싱 모델의 네가지 유형인 Wisdom, Voting, Funding, Creation을 접목하여 전문가 그룹을 활용한 직접적 평가 및 대중의 간접적 평가를 통해 기술가치 평가에 대한 객관성을 제고할 수 있는 방법에 대해 논의한다.

뉴스가치 평가 기준에 따른 패션 뉴스 분석 -온라인 패션 뉴스를 중심으로- (Analysis of Fashion News Based on News Value Assessment Criteria -Focused on Online Fashion News-)

  • 이지선;전재훈
    • 한국의류학회지
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    • 제45권2호
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    • pp.285-304
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    • 2021
  • Today, false news is increasing in volume, and fashion news often circulates uncritically. Therefore, an evaluation framework is needed to determine whether fashion news is accurate or good. In journalism, the judgment of good news is made through the criterion of news value factors. These factors are the criteria for assessing the likelihood of an event being reported in the news. Through the study of news value by various journalistic scholars, this study selected nine news value factors applicable to the value measurement of fashion news as the framework of analysis. Based on this, after analyzing the actual news on online fashion media, new characteristics and content were reconstructed for fashion news. As a result of the study, it was finally selected that the crucial factors were: expertise, social importance, timelessness, conflict, and negativity for measuring the value of fashion news. To assess the news value of fashion accurately, this study found that reconceptualized news values are needed, which are different from the news values of general journalism. The study is meaningful in that it explores elements and content for the development of a theoretical framework for the qualitative evaluation of fashion news.