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Fuzzy System Reliability Analysis With Weighted Components Based on Fuzzy Numbers (퍼지숫자를 기반으로 가중 구성요소를 갖는 퍼지시스템의 신뢰도분석)

  • Cho, Sang-Yeop
    • Journal of Internet Computing and Services
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    • v.8 no.3
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    • pp.99-107
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    • 2007
  • In general, the reliabilities of the fuzzy system are represented and analyzed by real numbers between zero and one, fuzzy numbers, intervals of confidence, interval-valued fuzzy sets, vague sets, etc. This paper addresses the method to analyze the reliability of the fuzzy system for the weighted components with the weights reflected on the importance of weighted components in an system. The reliabilities and the weights of the weighted components in a fuzzy numbers and considers the weights of the weighted components in a fuzzy system, therefore, its execution is faster and more flexible than the conventional methods.

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Eliciting Mental Models for Mobile Device Purchase Decision Making (모바일 기기 구매 의사결정에 관한 멘탈 모델의 추출)

  • Hwang, Sin-Woong;Yoon, Yong-Sik;Sohn, Young-Woo
    • Science of Emotion and Sensibility
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    • v.10 no.1
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    • pp.23-36
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    • 2007
  • This research focused on eliciting and analyzing mental models of mobile device purchasing consumers who are distinguished by their familiarity with information technology. Mental model elicitation processes proceeded by critical decision method. And Pathfinder algorithm and Social Network Analysis were used to analyze the mental models. The results show that IT-familiar consumers have mental models of which elements are more organized and distinctive while IT-unfamiliar consumers have vague and socially affected mental models.

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Gender Inequality in Compensation for Accident of Female Farmer (사고 보상과정에서 나타난 여성농업인의 불평등)

  • Lee, Jin-Young;Kim, Gyung-Mee;Choi, Yoon-Ji
    • Journal of Agricultural Extension & Community Development
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    • v.13 no.2
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    • pp.299-312
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    • 2006
  • This study reported on the cases about gender inequality in agriculture. Generally women have experienced something in vague situation as unequal to men in rural and agriculture. Despite of some women's have been complaining about this problem, it is not easy why and how many times they have been suffering. In this report, to get the information of gender unequality in agricultural laws and policies, the data was gathered by two steps. The first step, 175 cases into nine types was collected from leaders of several women farmer's associations, and after that, 60 cases selected to be interviewed by a specialist panel. The second step, it was analyzed the interviewed 60 cases based on real conditions compared with laws of items of policies. Among the cases, it was analyzed 8 rural women's who had been experienced to receive the inappropriate compensation in an unexpected accidents. From these cases, it was drew up some suggestions as follows; to make a rule to certify of the identity of woman farmer, and to build in a monitoring system of gender equality in agriculture.

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Content Analysis on Caring Experiences of Mothers of Children with Burns (화상환아 어머니의 돌봄 경험에 대한 내용분석)

  • Nam, Seon-Hi;Seo, Ji-Min
    • Women's Health Nursing
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    • v.18 no.4
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    • pp.257-267
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    • 2012
  • Purpose: This study was conducted to identify the caring experience of the mothers of childhood burn patients. Methods: Data were collected from 28 mothers of childhood burn patients, through semi-structured in-depth interviews. Data were categorized and coded by using content analysis. Results: 27 categories and 102 statements were drawn from 4 domains. The analyzed domains were psychological sufferings, confronted harsh reality, coping method, and future concerns. Psychological sufferings were categorized heartache, sense of guilt, confusion, regret, depression, sorriness, getting hurt, frustration and upset feeling. Confronted harsh nature were categorized economic difficulty, physical burn-out, lack of caring other children and family troubles. Coping method were categorized positive thinking, having hope, ventilating feelings, accepting the situations, demanding help from family members, changing patterns of the burned child rearing, collecting information for burn treatment, refusing accept the condition of burned child, avoiding personal and social relationship, and reliance on religion. Concerns were categorized concerns of growth and adaptation of the burned child, anxiety for scar, concerns of adapting school life and vague future concerns. Conclusion: The nursing interventions for early assessing psychological problems and providing social supports for caring both burn patients and other siblings should be provided to the mothers of childhood burn patients.

Robust Estimation of Camera Motion using Fuzzy Classification Method (퍼지 분류기법을 이용한 강건한 카메라 동작 추정)

  • Lee, Joong-Jae;Kim, Gye-Young;Choi, Hyung-Il
    • The KIPS Transactions:PartB
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    • v.13B no.7 s.110
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    • pp.671-678
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    • 2006
  • In this paper, we propose a method for robustly estimating camera motion using fuzzy classification from the correspondences between two images. We use a RANSAC(Random Sample Consensus) algorithm to obtain accurate camera motion estimates in the presence of outliers. The drawback of RANSAC is that its performance depends on a prior knowledge of the outlier ratio. To resolve this problem the proposed method classifies samples into three classes(good sample set, bad sample set and vague sample set) using fuzzy classification. It then improves classification accuracy omitting outliers by iteratively sampling in only good sample set. The experimental results show that the proposed approach is very effective for computing a homography.

An Efficient Decision Maki ng Method for the Selectionof a Layered Manufacturing (3차원 조형장비 선정을 위한 효율적인 의사결정 방법)

  • Byun, Hong-Seok
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.18 no.1
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    • pp.59-67
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    • 2009
  • The purpose of this study is to provide a decision support to select an appropriate layered manufacturing(LM) machine that suits the application of a part. Selection factors include concept model, form/fit/functional model, pattern model far molding, material property, build time and part cost that greatly affect the performance of LM machines. However, the selection of a LM is not an easy decision because they are uncertain and vague. For this reason, the aim of this research is to propose hybrid multiple attribute decision making approaches to effectively evaluate LM machines. In addition, because subjective considerations are relevant to selection decision, a fuzzy logic approach is adopted. The proposed selection procedure consists of several steps. First, we identify LM machines that the users consider After constructing the evaluation criteria, we calculate the weights of the criteria by applying the fuzzy Analytic Hierarchy Process(AHP) method. Finally, we construct the fuzzy Technique of Order Preference by Similarity to Ideal Solution(TOPSIS) method to achieve the ranking order of all machines providing the decision information for the selection of LM machines.

An Inquiry into the Significance of Theory of Podiatry in "Hwangjenaegyeong(黃帝內經)" ("황제내경(黃帝內經)" 발병이론(發病理論)의 의의(意義)에 대한 고찰)

  • Jang, Woo-Chang
    • Journal of Korean Medical classics
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    • v.20 no.3
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    • pp.1-8
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    • 2007
  • In "Hwangjenaegyeong", pathogenesis is explained based on theory of Yin and Yang. According to the theory, all environments surrounding us, physical and emotional both, are related to outbreak of diseases. This also reflects one of the major theories in oriental medicine, in which a human body is perceived as a correspondence to natural environment. In this theory, the main idea is to understand changes in the universe based on mutual correlations from within. This kind of perspective is easily criticized from scientific point of view. Whereas modern science pursue analytic thinking and objective information, the theories above seem rather vague. However, from a different angle, through a characteristic perspective of oriental medicine, actual significance can be found in the theory. Many diseases result from one's intemperate living habits. Therefore, much prevention can be made by self-control. Also, once disease occurs, the essential step to treatment is to find cause in the living environment and regain balance. Natural cure will take its' course when living habits recover moderate pace and are back in harmony with the environment.

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Placental Histopathology in COVID-19-Positive Mothers

  • Sherwani, Nikita;Singh, Neha;Neral, Arvind;Jaiswal, Jyoti;Nagaria, Tripti;Khandwal, Onkar
    • Journal of Microbiology and Biotechnology
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    • v.32 no.9
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    • pp.1098-1102
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    • 2022
  • The placenta is a captivating multifunctional organ of fetal origin and plays an essential role during pregnancy by intimately connecting mother and baby. This study explicates placental pathology and information about 25 placentas collected from the mothers infected with novel coronavirus (SARS-COV-2). So far, congenital transmission of SARS-CoV-2 seems to be remarkably uncommon in spite of many cases of COVID-19 during pregnancy. Out of the 25 placental tissue samples collected, none has shown gene expression of SARS-CoV-2 when confirmed by RT-PCR. At the same time, nasal and throat swab samples collected from newborns of SARS-CoV-2-positive mothers correspondingly tested negative by RT-PCR. The shielding properties of placental barriers against viral infections from mothers to newborns remains a mystery. Major histopathological findings have been recorded as choriodecidual tissue with necrosis, intramural fibrin deposition, chorionic villi with fibrosis, and calcification. Moreover, although recent findings are insufficient to prove direct placental transmission of COVID-19, the abundance of angiotensin-converting enzymes-2 (ACE-2) on the placental surface could potentially contribute to unpleasant outcomes during pregnancy as SARS-CoV-2 gains access to human cells via ACE-2. Finally, the significance of these findings is vague and needs further study.

Experiments and Assessment on Traditional Korean Medicine Diagnostic Support System (한의 진단 지원 시스템의 시험 수행 및 평가)

  • Cho, Woo-keun;Kim, Myung-ho;Lee, Sang-ah;Jang, Myung-woong;Choi, Dong-jun
    • The Journal of the Society of Stroke on Korean Medicine
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    • v.13 no.1
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    • pp.63-70
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    • 2012
  • Object : Traditional Korean Medicine Diagnostic Support System(TKMDSS) is the diagnostic prescribing system based on ontology developed by Korea Institute of Oriental Medicine. We monitored and assessed its usefulness and searched for improvements. Methods : We collected 10 cases of stroke inpatients of Dongguk University Ilsan Oriental Hospital. They were diagnosed by primary care physician and another researcher who monitored using "TKMDSS" respectively. We compared the process and results of two diagnosis. Results : The diagnostic concordance rate between primary care physician and researcher were pretty high. Most of the problems were caused by expressions on symptoms inappropriate use of terminology. The severity of symptoms and vague symptoms which is hard to be diagnosed should be reflected and measured in this system. Conclusions : The problems were about terminology and definition. The terminology should be defined accurately and in-depth detail so that anyone can get the right information. If the problems were modified, "TKMMSS" could be utilized as supportive measures for oriental medicine doctors and students.

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A Study of LOD(Level of Detail) for BIM Model applied the Design Process (설계 프로세스를 반영한 BIM 작성 기준(LOD)에 대한 연구)

  • Cho, Hyun-Jung;Kim, Yeon-Soo;Ma, Young-Kyun
    • Journal of KIBIM
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    • v.3 no.1
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    • pp.1-10
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    • 2013
  • BIM(Building Information Modeling) ordering manuals and guidelines are diffused with the recent BIM activation. However, it is causing drawbacks such as an increase of work at each design stage and a decline of BIM application level that the standard of making up and managing BIM is vague and it includes comprehensive meaning. Therefore, this study aims to secure BIM work standard by establishing BIM making-out standard based on LOD(Level of Detail) classification considering domestic design process. It compared each definition of LOD by analyzing domestic and foreign BIM guideline examples, and figured out insufficiency of existing domestic and foreign design process and BIM guidelines. Moreover, it drew architects' work articles for promoting the progression of the efficient design process, and analyzed BIM requirements on design process, dividing BIM application scale by field. Through this analyzing process, it finally established BIM making-out standard classified by design process. The effects of establishing BIM making-out standard would include improving a division of labor and cooperation environment by creating integrated BIM model on design stages, advancing work efficiency by preventing a repetition and an increase of work, and upgrading project completeness and design quality. Besides, it can secure BIM work standard by clarifying responsibility for working steps. BIM making-out standard established by this study will contribute to developing the future BIM work standard document and BIM guideline as a data base.