• Title/Summary/Keyword: Result Analysis and Evaluation

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A Study on the Evaluation of Landscape Elements in Outdoor Space at University Campus (대학캠퍼스 외부공간 경관요소 평가에 관한 연구)

  • Kim, Ick-Hwan;Kim, Cheon-Il
    • The Journal of Sustainable Design and Educational Environment Research
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    • v.12 no.3
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    • pp.58-67
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    • 2013
  • This study is to analyze the satisfaction and the image evaluation of landscape elements in outdoor space by types of the university campus. The results are as follows. 1) Out of outdoor elements at university campus, planting area, resting area, access road, and water feature are recognized as major landscape elements. Among them, planting area and access roads are evaluated low in terms of satisfaction levels, therefore, improvement on these elements are required. 2) In outdoor space image evaluation, university campus has image such as 'simple', 'clear', and 'safe'. By scale of universities, both 'A' university, which is the biggest in terms of size of campus, and 'B' university, which has a medium sized campus, have a positive image. However, 'C' university, which is the smallest in terms of size of campus, has a passive and negative image. 3) 6 factors are extracted through Factor Analysis for image evaluation. All of the universities show positive image in the categories of 'clarity' and 'familiarity', however, 'B' university and 'C' university show negative image in the category of 'scale'. 4) In Correlation Analysis between landscape elements satisfaction level and image evaluation, it is showed that the group of landscape facility becomes a relation factor of overall image evaluation. As a result, the higher satisfaction level goes, the better image evaluation of overall outdoor space at university campus is.

A preliminary study of semi-quantitative, comparative evaluation of split or half fingerprints using Densitometric Image Analysis (DIA) - Inter-analyst differences for split or half fingerprints -

  • Song, Minkyu;Kim, Seung-chan;Choi, Sung-Woon
    • Analytical Science and Technology
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    • v.34 no.2
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    • pp.56-67
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    • 2021
  • Due to the difficulty of grading visualized fingerprints with previously known evaluation methods for the comparison of split fingerprints, a preliminary study was performed with the densitometric image analysis (DIA) method as a potential quantitative and supplementary evaluation method. Each image of inked split fingerprints was divided into 4 zones for analysis. Weekly intra- and inter- analysis by two analysts with three whole fingerprints that were constructed by combining inked split fingerprints showed that the average area values and the ranges of difference fluctuation were not significantly different between strong fingerprints and strong-weak pairs, while they were different in weak fingerprints and weak-weak pairs. In the case of weak fingerprints, the exact acquisition of ridges was difficult and this seemed to influence the results. An additional study is needed for the improved reliability using DIA method with weak fingerprints such as 8 zones division rather than 4 zones. In addition, the analysis results performed by several analysts at different times should be used to improve the reliability of the analysis method further. Based on the above result, it can be judged that utilizing the DIA method as a secondary evaluation method of the existing scoring system would be effective with the additional studies especially on weak fingerprints.

Reliability-Optimal Design Method of High-Speed Railway Bridges Based upon Expected Life-Cycle Cost (기대생애주기비용에 기초한 고속철도교량의 신뢰성-최적설계 방안)

  • Lee, Woo-Sang;Bang, Myung-Seok;Han, Sung-Ho;Lee, Chin-Ok
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.14 no.4
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    • pp.102-110
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    • 2010
  • The reliability evaluation may be a efficient method for estimating of the quantitative structural safety considering the effect of uncertainties included in high-speed railway bridges. The expected life-cycle cost(LCC) based upon the reliability evaluation will reasonably offer the safety level and design criteria of high-speed railway bridges. Therefore, this study determined the expected life-cycle cost and optimal design method of high-speed railway bridges on the basis of the result of the numerical analysis and reliability evaluation. For this, after creating various design method based upon the standard design of high-speed railway bridges, the numerical analysis is conducted on each of the alternative design methods. The reliability evaluation by the design strength limit state function is conducted considering the effect of external uncertainties on the basis of the numerical analysis result. The expected life-cycle cost of high-speed railway bridges is calculated on the basis of the reliability evaluation result by each of the alternative design methods. Also, the optimal design method is determined using the calculated expected life-cycle cost. In addition, The result of reliability evaluation and expected life-cycle cost of optimal design method are examined considering the effect of internal uncertainties. It is expected that the result of this study can be used as a basic information for the systematic safety evaluation and optimal structure design of high-speed railway bridges.

A Study on Clothing Image Evaluation and Preference According to Self-Image Classification of the Middle-Aged Women (중년 여성의 자기 이미지 유형화에 따른 의복 이미지 평가와 선호)

  • Shim, Jung-Hee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.30 no.11 s.158
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    • pp.1608-1617
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    • 2006
  • Due to the popularization of fashion, it is important for consumers to find out under what kinds of reasons consumers choose and prefer the clothing products as consumers are interested in clothing and have variety of their styles to choose This study is to classify the self-image of the middle-aged women and examine the characteristics of each group and also to inquire into the evaluation of clothing by each group. Data are collected through a self-administered questionnaire survey from 4 to October 31, 2005 from 350 middle-aged women in Daegu; 275 are used for the data analysis. Data analysis is performed using SPSS Package, which included cluster analysis, factor analysis, ANOVA, Duncan's multiple range test, and chi-square test. The results are as follows: 1. As a result of factor analysis of self-image, the five factors which are intelligent image, social image, fashionable image, female image, bold image are extracted. Besides, as a result of cluster analysis, the three types which are female-type, neuter-type, male-type are classified. 2. The middle-aged women regard the classic style as their best style for outgoing and then they like the casual style, elegant style, dramatic style in order. 3. As a result of factor analysis for clothing image, the four factors which are dignity, attraction, simplicity activity are extracted. 4. According to self-image types, there are differences for clothing image and preferring clothing styles. While female-type groups choose the elegant style, neuter-type groups regard the classic style as their best style and male-type groups regard the casual style as their best style. In case of daring style, the preference shows the lowest among all the types unrelated to self-image types.

An Study on the Impact of N/A Check Item on the Security Level Result through Empirical Verification (실증검증을 통한 N/A 점검항목이 보안 수준 결과에 미치는 영향에 관한 연구)

  • Lee, Jun Ho;Sung, Kyung Sang;Oh, Hea Seok
    • KIPS Transactions on Computer and Communication Systems
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    • v.3 no.8
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    • pp.271-276
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    • 2014
  • This study analyzed that N/A check items affect the results of the security level degree, when performing vulnerability analysis evaluation. For this, we were used vulnerability analysis evaluation range, check items and quantitative calculation method. Furthermore, were applied grade and weight for the importance of the items. In addition, because technology develop rapidly, the institution is always exposed risk. therefore, this study was carried out empirical analysis by applying RAL(Risk Acceptabel Level). According to the analyzed result N/A check items factors affecting the level of security has been proven. In other words, this study found that we shall exclude inspection items irrelevant to the institution characteristics, when perform vulnerability analysis evaluation. In this study suggested that security level evaluation shall performed, after that exclude items irrelevant to the institution characteristics based on empirical verification. And also, it proposed that model research is required for establish check items for which analysis-evaluate vulnerability based on empirical verification.

Evaluation of Maximum Dry Unit Weight Prediction Model Using Deep Neural Network Based on Particle Size Analysis (입도분석에 기반한 Deep Neural Network를 이용한 최대 건조 단위중량 예측 모델 평가)

  • Kim, Myeong Hwan
    • Journal of The Korean Society of Agricultural Engineers
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    • v.65 no.3
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    • pp.15-28
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    • 2023
  • The compaction properties of the soil change depending on the physical properties, and are also affected by crushing of the particles. Since the particle size distribution of soil affects the engineering properties of the soil, it is necessary to analyze the material properties to understand the compaction characteristics. In this study, the size of each sieve was classified into four in the particle size analysis as a material property, and the compaction characteristics were evaluated by multiple regression and maximum dry unit weight. As a result of maximum dry unit weight prediction, multiple regression analysis showed R2 of 0.70 or more, and DNN analysis showed R2 of 0.80 or more. The reliability of the prediction result analyzed by DNN was evaluated higher than that of multiple regression, and the analysis result of DNN-T showed improved prediction results by 1.87% than DNN. The prediction of maximum dry unit weight using particle size distribution seems to be applied to evaluate the compacting state by identifying the material characteristics of roads and embankments. In addition, the particle size distribution can be used as a parameter for predicting maximum dry unit weight, and it is expected to be of great help in terms of time and cost of applying it to the compaction state evaluation.

Research on Vulnerability Assessment Indicators and Weights for Ship Accident Using AHP Analysis (AHP 분석을 통한 선박사고 취약성 평가지표 및 가중치에 관한 연구)

  • Woo-Song Jeong;Yong Beom Pyun;;Jae-Joon Lee
    • Journal of the Society of Disaster Information
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    • v.20 no.3
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    • pp.609-619
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    • 2024
  • Purpose: The purpose of the study is to select reactivity indicators in the occurrence of ship accidents and change the evaluation index for people who are interested in ship accidents. Method: In order to make the selector's benchability index valid, we conducted an emotional survey of experts, compiled a feasibility assessment using the Likert scale, and performed AHP analysis to work on the relative results. Result: As a result of using the Likert scale for all evaluation indicators, the validity was confirmed by scoring more than 3.5 points on a 5-point scale, and as a result of AHP analysis, priority was given to 9 evaluation indicators. Conclusion: The results of this study developed an evaluation index by establishing a detailed basis for the evaluation index while operating in an aircraft.

Exploration of the Predictors of Lecture Evaluation in College of Engineering using Decision Tree Analysis (의사결정나무분석에 의한 공과대학 강의평가 예측요인 탐색)

  • Lee, Jiyeon;Lee, Yeongju
    • Journal of Engineering Education Research
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    • v.21 no.4
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    • pp.46-52
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    • 2018
  • In general, lecture evaluation has been used in most universities as an important criterion to evaluate quality of education. This study is exploratory research on the predictors that determine lecture evaluation in college of engineering to give practical implications for improvement of engineering education. For the exploration of predictors of lecture evaluation, the data of lecture evaluation in A College of Engineering located in the metropolitan area was used, and Decision Tree Analysis was utilized as an analysis method. As a result, the characteristics of students turned out to be the most distinct predictor comparing with those of course and instructor at lecture evaluation in college of engineering. That is, as various elements other than teaching competency influence lecture evaluation in college of engineering, it is necessary to be more careful in evaluating quality of lecture or teaching competence. Thus, a follow-up study should be conducted to adjust the influence by the predictors that instructors can hardly control.

An Analysis of Biotope Structure in Metropolitan city in terms of Nature Experience and Recreation (대도시의 비오톱 구조분석 -자연체험 및 휴양의 관점에서-)

  • 나정화;이석철
    • Journal of the Korean Institute of Landscape Architecture
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    • v.28 no.3
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    • pp.72-87
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    • 2000
  • The purpose of this research was analysis of biotope structure focused on the evaluation for the nature experience and recreation in the case of Suseoung District in Daegu metropolitan area. The results of this study were as follows; 1) The result of biotope type classification was divided into 17 biotope type groups and 90 biotope types belonging to them. 2) In the result of the first evaluation for the nature experience and recreation, biotope types such as MA, NA, OE, PH, QB etc. possess great value. Particulary these biotope types come from forest areas and transition zone. The have not appeared in the inner of cities. 3) The biotope types such as JC, ME, OA, OE, PB, QD, QF etc. are proved to possess high value in the result of the utility evaluation. 4) There emerges 3a biotope type that has the highest value in the result of the second evaluation - such as ME, NB, NC, PD, QB etc. Most of them range widely except in the urbanized areas. Most of them were presented into the large area of site size and in the outer forest areas. But most of them were distributed in the forest areas intensively. So, it is certain that the space of nature experience connected with residential district of the urban people s scarce. Finally, the detailed plan must be made out specially continuously. It is about biotope spaces that are important for the nature experience and the recreation from the result of this research. Also, the study on the detailed index settlement of the sight green plan based on the biotope map must be continued.

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Analysis of Live Load Factor for Bridge Evaluation Through Reliability Based Load Factor Calibration (신뢰도기반 하중계수 캘리브레이션을 통한 교량 평가 활하중계수 분석)

  • Yoo, Min-Sun;Kim, Kyung-Hyun;Paik, In-Yeol
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.26 no.6
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    • pp.212-221
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    • 2022
  • In this paper, the evaluation procedure applying the limit state design method is studied to be consistent with the newly issued bridge design code in Korea. The live load factor for evaluation is proposed by calibrating for the target reliability index through reliability analysis. Using the actual bridge information collected for the representative bridge types in Korea, the load effects of the design live loads for the previous and current design codes are calculated and compared. The live load factor is calibrated through reliability analysis using the minimum required strength which equals to the load effect obtained for the example bridge. Bridge evaluation is performed by applying the live load factors for the evaluation level as well as design level. The load rating result is generally increased by applying the limit state design method compared to the previous design method and applying the proposed load factor for lowered target reliability index further increased the rating result.