• 제목/요약/키워드: Case-Study

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외복변인의 지적 인상형성에 미치는 영향에 관한 연구 (A Study on the Influence of Appearance Variables upon the Intellectual Impression Formation.)

  • 문영보;이인자
    • 복식
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    • 제20권
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    • pp.17-31
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    • 1993
  • The purpose of this study is to inquire into the influence of appearance cues on the intellectual impression formations, whether there are differen-ces in the impression formation between the case which the appearance is partially percepted and the case wholely percepted. The study consists of the experiment of the factorial design with 5 independent variables of Face (intellectual and social), Hair Style (intellec-tual and social), Clothing Style (intellectual and social), Textile Pattern(single, color, dot, and stri-pe), and Presentation Level of stimuli (upper-half and full-length). The outcomes of study are as follows : 1) The intellectual impression formation was influenced by face, clothing style, and textile pat-tern, but clothing style and textile pattern were more influential than face. When the models with intellectual face wore in intellectual clothing style, they gave more additional intellectual impression. And when intellectual clothing was in single color, it conveyed more intellectual impression. Hair style had no main effect but it influenced on the impression formation through interaction with other variables. 2) There were differences in the formation of the intellectual impressions between the case the appearance was partially percepted and the case wholely percepted. The case of full-lenth pressen-tation was more influential than that of upper-half presentation.

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Common Due-Date Assignment and Scheduling with Sequence-Dependent Setup Times: a Case Study on a Paper Remanufacturing System

  • Kim, Jun-Gyu;Kim, Ji-Su;Lee, Dong-Ho
    • Management Science and Financial Engineering
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    • 제18권1호
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    • pp.1-12
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    • 2012
  • In this paper, we report a case study on the common due-date assignment and scheduling problem in a paper remanufacturing system that produces corrugated cardboards using collected waste papers for a given set of orders under the make-to-order (MTO) environment. Since the system produces corrugated cardboards in an integrated process and has sequence-dependent setups, the problem considered here can be regarded as common due-date assignment and sequencing on a single machine with sequence-dependent setup times. The objective is to minimize the sum of the penalties associated with due-date assignment, earliness, and tardiness. In the study, the earliness and tardiness penalties were obtained from inventory holding and backorder costs, respectively. To solve the problem, we adopted two types of algorithms: (a) branch and bound algorithm that gives the optimal solutions; and (b) heuristic algorithms. Computational experiments were done on the data generated from the case and the results show that both types of algorithms work well for the case data. In particular, the branch and bound algorithm gave the optimal solutions quickly. However, it is recommended to use the heuristic algorithms for large-sized instances, especially when the solution time is very critical.

복부비만과 허혈성 뇌졸중 (Abdominal Obesity as a Risk Factor of Ischemic Stroke in Case-control study)

  • 임희선;고성규
    • 한방비만학회지
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    • 제2권1호
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    • pp.25-36
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    • 2002
  • Objective: The purposes of this study are to know the relations of abdominal obesity and ischemic stroke and to know what index could represent the abdominal obesity appropriately. Methods. We have done case-control study and recruited 97 ischemic stroke patients and 117 controls. Case is matched by control by individual matching. All participants had questionnaire, interview and then were examined waist-hip ratio, waist circumference and body mass index. Results : WC, WHR and Hypertension history had differences in two groups, case and control groups. But BMI and other factors weren't significant. According to Quartile of Waist Circumference, the two groups had the differences in hypertension history, diabetes history, smoking status, WHR, BMI, and weight and in the Quartile of Waist-Hip Ratio Quartile, past history of hypertension and diabetes, WC, BMI and weight had the significances. Sex, Age Adjusted and Multivariate Odds Ratio (95% Confidence Interval) of WC Quartile are 2.083, 1.628, 4.491 and 4.418, 4.964, 12.306, and in WHR, the Ors are 2.252, 5.743, 15.776 and 2.632, 8.918, 23.596. Conclusions: We knew from these results that abdominal obesity is very important risk factor of ischemic stroke and WHR more than WC is a good indicator of abdominal obesity, so we should reduce the WHR to prevent of ischemic stroke.

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입양가족의 뿌리찾기 경험에 대한 질적 사례연구 (A Qualitative Case Study on the Experiences Searching Roots of Adoptive Families)

  • 권지성;안재진;변미희;최운선
    • 한국사회복지학
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    • 제62권2호
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    • pp.209-233
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    • 2010
  • 이 연구의 목적은 입양가족들의 뿌리찾기 경험을 이해하고자 하는 것이다. 이러한 목적을 달성하기 위해, 연구자들은 뿌리찾기를 시도한 입양가족들과 접촉하여 심층면접을 실시하고 다양한 자료들을 수집하였으며 질적 사례연구 접근을 통해 분석하였다. 최종 다섯 가족을 통해 수집한 자료들을 가지고 사례 내 분석과 사례 간 분석을 실시하였다. 사례 간 분석을 통해 나타난 주제들은 '입양됨의 인식', '호기심 폭발', '불안한 기다림', '진실을 만나는 순간', '그래, 내가 진짜 엄마야', '그리고 아무 말도 없었다' 등이었다. 연구결과를 근거로, 입양가족들의 뿌리찾기를 지원하기 위한 정책과 실천 지침들을 제언하였으며, 연구의 한계를 극복하고 더 풍부한 정보를 확보하기 위해 필요한 후속연구들에 대해서도 제언하였다.

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Circulating folate levels and colorectal adenoma: a case-control study and a meta-analysis

  • Park, Yeong Mi;Youn, Jiyoung;Cho, Chang Ho;Kim, Sung Hi;Lee, Jung Eun
    • Nutrition Research and Practice
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    • 제11권5호
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    • pp.419-429
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    • 2017
  • BACKGROUND/OBJECTIVES: The relationship between folate and colorectal neoplasia remains controversial. We examined the association between serum folate concentrations and colorectal adenomas in a case-control study of Korean adults and conducted a meta-analysis. SUBJECTS/METHODS: Our case-control study included 113 pairs of case and control who underwent colonoscopy and provided blood samples. We used multivariable conditional logistic regression models to obtain the odds ratios and 95% confidence interval (CIs). For meta-analysis, we identified the relevant studies by searching the PubMed database up to February 2017, included our case-control study and combined the study-specific relative risks (RRs) using a random-effects model. RESULTS: In this case-control study, we included 58 men and 55 women with colorectal adenomas and sex and fasting status matched the controls. We did not find any significant association between the serum folate levels and colorectal adenomas in either men or women. For meta-analysis, a total of eleven studies were included in our analysis and classified into two groups; polyp clearance group (PC) for the studies that included participants who underwent endoscopies and had their polyps removed at baseline; and no polyp clearance group (NPC) for the studies that included participants whose histories of endoscopies were unknown or who underwent their first endoscopies. Four PC (1,311 cases and 1,672 non-cases) and eight NPC studies (3,501 cases and 11,347 non-cases) were included. The combined RRs (95% CIs) comparing the bottom with the top categories of circulating folate levels were 1.07 (0.97-1.18) for the NPC group but 1.45 (1.16-1.74) for the PC group. CONCLUSIONS: Low circulating folate levels were associated with new adenoma formation.

흡연과 중풍발생의 상관관계에 관한 환자-대조군 연구 (The Analysis of Relation between Cigarette Smoking and Stroke; case-control study)

  • 양대진;배종면;이경섭;조기호;김영석;배형섭
    • 대한한의학회지
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    • 제22권4호
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    • pp.69-78
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    • 2001
  • Objectives : It is known that cigarette smoking is associated with increased risk of both thrombotic and hemorrhagic stroke. However, in Korea, especially in the academic world of Korean Medicine, there is a lack of study about the relation between cigarette smoking and stroke. We carried out a case-control study to clarify the relation between cigarette smoking and stroke. Method : We interviewed 441 stroke patients (236 men, 205 women) as a case group and 432 non-stroke patients (208 men, 224 women) as a control group. We investigated the smoking pattern of all patients and stroke-subtype of the case group. Smoking pattern is classed into two (Class I), four (Class II) and five groups (Class III). Class I consists of current non-smokers and current smokers. Class II consists of non-smokers, former smokers, current light smokers and current heavy smokers. Class III consists of never smoked, secondhand smokers, former smokers, Current light smokers and current heavy smokers. Stroke-subtype consists of cerebral infarction and cerebral hemorrhage. Results : The percentage of current smokers of case group is higher significantly than that of control group. The number of cigarettes smoked per day is associated positively with the risk of stroke. According to our study, generally cigarette smoking is related with ischemic stroke. The percentage of secondhand smokers of the case group is lower than that of the control group. According to our study, characteristically secondhand smoking is associated with hemorrhagic stroke. Conclusions : From the above results we found that cigarette smoking is an important risk factor of stroke - especially cerebral infarction - and the number of cigarettes smoked per day is associated positively with the risk of stroke. Characteristically according to our study, secondhand smoking is associated with hemorrhagic stroke. Overall we conclude that cigarette smoking may be an important preventable factor for stroke.

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茯笭補心湯이 咳嗽에 미치는 臨床的 考察 (The Clinical Study of Bokryungbosim-tang on the Cough)

  • 이시형;박천수
    • 대한한방내과학회지
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    • 제21권2호
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    • pp.212-212
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    • 2000
  • Objective : To observe the effect of Boryungbosim-tang on the cough, cough patients medicine Boryungbosim-tang. Methods : A clinical observation was done on 30 case of cough patients, treated by Boryungbosim-tang, who were hospitalized frome January, 1. 1999 to December, 31, 1999 at the department of IKSAN Oriental Medicine Hospital, Wonkwang University and Pak Cheon Soo oriental medical clinic. Results : The effect of treated by Boryungbosim-tang is that excellent was 19 case(63.33%), good 3 case(10%), fair 3 case(10%) and poor 5 case(16.66%). Conclusions : These results indicate that the effect of Boryungbosim-tang on the cough is excellent.

A Study on Case Realization within DP

  • Hong, Sung-Shim
    • 한국언어정보학회지:언어와정보
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    • 제3권1호
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    • pp.97-111
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    • 1999
  • This paper examines Case alternation within DP. Four previous accounts dealing with Case alternation within DP will be critically examined. We conclude that a phenomenon looking like Case alternation within Korean DPs is not an instance of Case alternation. We argue that the genitive subject within such DPs is actually in the Spec position of a Small Clause, which involves a verb movement into what is now called vP. From a cross-linguistic point of view, this analysis supports Harley & Noyer's(1997) argument that Gerunds are instances of Small Clauses.

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Study of Diffusion-controlled Processes. Solution of the Smoluchowski Equation with a Step Potential

  • Kim, Dae-Young;Shin, Seok-Min;Shin, Kook-Joe
    • Bulletin of the Korean Chemical Society
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    • 제7권4호
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    • pp.271-275
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    • 1986
  • The Smoluchowski equation with a step potential is solved in one-dimensional case and three-dimensional case with spherical symmetry. Exact analytic expressions for the solution and the remaining probability are obtained in one-dimensional case for the reflecting boundary condition and the long time behavior of the remaining probability is compared with the earlier work. In three-dimensional case, only the long time behavior is evaluated. More general case with the radiation boundary condition is also investigated and the results are shown to approach correct limits of the reflecting boundary condition.

바닥보호공 설치에 따른 하상변동 특성 분석 (An Analysis of Bed Change Characteristics by Bed Protection Work)

  • 손아롱;김병현;문보람;한건연
    • 대한토목학회논문집
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    • 제35권4호
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    • pp.821-834
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    • 2015
  • 본 연구에서는 세굴방지를 위하여 설치된 바닥보호공의 영향을 고려한 흐름특성 및 하상변동에 관한 연구를 수행하였다. 대상지역은 낙동강유역의 합천창녕보가 포함된 현풍 수위관측소에서부터 마수원 수위관측소까지의 구간이며, CCHE2D 모형을 적용하기 위하여 2010년 태풍 '곤파스'사상을 대상으로 검 보정하였다. 바닥보호공에 대한 영향을 분석하기 위하여 빈도별 호우사상(50년, 100년, 200년)에 대해 세 가지의 모의조건(Case 1, 2, 3)을 구성하였으며, Case 1은 보가 설치되기 이전의 조건, Case 2는 보가 설치된 이후의 조건, Case 3는 바닥보호공을 고려한 조건이다. 보의 설치로 인하여(Case 2) 고정보 및 전도게이트형 가동보 구간에는 퇴적량이 증가하였고, 리프트게이트형 가동보 구간은 높은 수위차로 인하여 보를 건설하기 이전(Case 1)보다 더 많은 세굴이 발생하였다. Case 3은 바닥보호공의 영향으로 보 직하구간(30m)에서 세굴이 발생하지 않았다. 그러나 바닥보호공이 설치되지 않은 보 하류구간(60m 이상)에서는 보가 설치되기 이전 조건(Case 1)보다 더 많은 세굴이 발생하였다. 이와 같은 결과를 통하여 본 연구결과는 실제 보에 대한 하상변동 예측과 보의 관리 및 운영에 대한 도움을 줄 수 있을 것으로 판단된다.