• 제목/요약/키워드: Choice factor

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다중 트랜잭션 기법을 이용한 자바 카드 가상 기계 성능 향상 (A Performance Enhancement of Java Card Virtual Machine with Multi-Transaction)

  • 노태헌;이동욱;정민수
    • 한국멀티미디어학회논문지
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    • 제12권1호
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    • pp.41-49
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    • 2009
  • 오늘날 대부분의 스마트카드는 자바카드 플랫폼을 채택한 자바카드가 표준안으로 자리매김 하고 있다. 자바카드는 전원이 차단되면 작업 중이던 데이터가 손실되는 문제점을 가지고 있다. 데이터 손실의 해결책으로 트랜잭션 개념이 사용되지만, 한 번에 하나의 트랜잭션 처리만을 허용하므로, 트랜잭션이 필요한 작업들은 이전에 작업 중인 트랜잭션이 끝날 때까지 대기해야 하고, 이는 자바 카드의 성능을 저하시키는 요인이다. 본 논문에서는 자바 카드의 수행 성능을 향상시키기 위한 방안으로 다중 트랜잭션 버퍼에서 트랜잭션을 수행할 수 있도록 이중 잠금 규칙을 규정하고, 이 규칙에 따라 트랜잭션을 처리함으로써 트랜잭션 처리 성능을 개선시키고자 한다. 이러한 연구 결과를 통해 데이터의 안전성을 놀이고 트랜잭션이 필요한 데이터의 대기 시간을 줄이고 자바 카드의 수행 속도를 증가 시킬 수 있다.

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Surgical Treatment of Subdural Hygromas in Infants and Children

  • Cho, Jun-Beom;Cho, Ki-Hong;Kim, Se-Hyuk;Shin, Yong-Sam;Lee, Won-Chung;Yoon, Soo-Han
    • Journal of Korean Neurosurgical Society
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    • 제38권4호
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    • pp.273-280
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    • 2005
  • Objective : There is no acceptable indication and treatment of choice for infantile and child subdural hygroma and there are only a few reports about that in Korea. So the authors studied the clinical findings of infantile and child patients with subdural hygroma to improve the understanding and to suggest a standard treatment method. Methods : The authors retrospectively evaluated the causes, preoperative symptoms, radiological thicknesses, and postoperative results of 25patients with subdural hygroma who received surgical therapy. Results : There were 16boys and 9girls whose median age was 6months[range $2{\sim}120months$]. The main clinical manifestations were seizures, increased intracranial pressure, macrocrania and alteration of consciousness. Radiological thicknesses of the subdural hygroma varied from 7mm to 42mm and postoperative changes of thickness[y] could be expressed with the factor of month[x]: $y\;=\;-1.32\;{\times}\;+11.8$ in subdural drainage, and $y\;=\;-1.52\;{\times}\;+14.9$ in subduroperitoneal shunts. Of the 25patients, 2 [50%] were successfully treated by aspiration, 13 [59%] by subdural drainage, and 9 [69%] by subduroperitoneal shunt. Conclusion : It is suggested that the diagnosis and treatment of subdural hygroma in infants and children should be carefully addressed because of its high prevalence in children, and especially in infants. It is also suggested that the subdural drainage could be primary initial treatment method because it is simpler than a shunt, and since our data show that there is no statistical difference in postoperative recovery duration between the two operative methods.

중학교 과학과 서술형 평가의 문항 특성 및 요인 분석 (An Analysis of Characteristic and Factor about Middle School Science Descriptive Assessment Items)

  • 김성기;최은주;백성혜
    • 대한화학회지
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    • 제59권5호
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    • pp.445-453
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    • 2015
  • 문제해결력 및 창의력 등과 같은 고등정신능력 배양을 위한 평가체제 구축의 일환으로 2005년 도입된 서술형 평가는 매년 평가비율이 증가하면서 단순 지식을 요구하는 선다형 평가의 대안적 평가로 떠오르고 있다. 정부의 서술형 평가 비율 확대로 학교현장에서 표면적으로는 어느 정도 정착이 되어 운영되고 있으나 실제 서술형 평가가 의도한 목적을 달성했다고 확언할 수 없다. 그래서 본 연구에서는 경기도 5개 중학교에서 실시된 과학과 서술형 평가 문항을 대상으로 서술형 평가 문항의 특성을 분석하였으며, 이러한 특성을 갖는 요인을 분석하고자 문항을 출제한 교사를 대상으로 심층면접을 실시하였다. 연구결과 서술형 평가 문항들은 ① 출제되는 단원의 편중, ② 단원별 문제 형식의 차이, ③ ‘고등정신능력’ 측정의 미흡이라는 문항의 특성을 갖고 있었다. 이러한 문항의 특성을 갖는 요인은 교사들의 평가 문항 제작, 평가 도구의 이해 등에 대한 능력이 결여되었기 때문이었다. 이러한 요소들은 모두 평가 전문성의 결여로 설명될 수 있다. 이를 통해 교사들의 평가 전문성을 신장을 위한 방안이 요구됨을 알 수 있었다.

온라인 후기를 통한 맞춤 웨딩한복의 디자인 고찰 2016년~2017년 (A study on custom Hanbok design through on-line review - From 2016 To 2017 -)

  • 류경옥
    • 한국의상디자인학회지
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    • 제20권3호
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    • pp.27-32
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    • 2018
  • Hanbok is a our own history and tradition and is an icon of Korean history and culture. Today, the costumes are moving around the world fashion trend due to the development of mass media and internet at the same time. This is an important clue to marketing activities and can be used for predictive analysis. Although Hanbok is changing little by little every year, research on the trend of Hanbok is rare. This study analyzed the results of searching for 'Hanbok' as a keyword in Portal Site Naver and posting a customized purchase of Hanbok for marriage between 2016 and 2017. The analysis was based on analyzing the photos uploaded, and analyzing purchase reason in the On-line review. Most buyer of Hanbok purchased for prepare marriage. The choice of a customized hanbok is mostly to search online or to use the fair. The most important factor in choosing a custom Hanbok that appeared in online reviews is color and then price. The color of the jacket is mostly light color and the off-white color is the most used and the long skirt such as the pink system, the chorale system and the red system, and it can be seen that the pink skirt is overwhelmingly large. In the design of Hanbok, The sleeves were straight and narrow, and the length was the chest line. The collar were enlarged and widened. 고름 used the sole color instead of the jacket and skirt color, and it was narrow not long. skirt's pleats was wide, and designed to overlap with double color of the fabric.

The Relation between Housing Needs and Housing Function according to the Maslow's Theory of Needs

  • Kim, Jin-Soo;Kim, Jin-Mo
    • KIEAE Journal
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    • 제17권4호
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    • pp.13-19
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    • 2017
  • Purpose: The most important thing is to know exactly what needs users have when planning a housing. People have their own criteria that directly influence purchasing decisions when choosing a house to live in. And they select the house with the largest number of elements satisfying these criteria. This days most consumers are mostly satisfied with their material needs. And now people thinking more important motive than simply pursuing material gains. It is the most essential role in they consume consciously or unconsciously that meeting the needs of which step. And now days housing space has become a merchandise, this study check the related function of the residential space and human needs. Method: First, this study wanted to understand the housing needs, which is needs related to housing in basic needs that humans have. Second, this study wanted to understand what the requirements and the criteria for choosing housing of actual resident, who want to have changed housing. Third, This study check how to set up the direction of development in housing planning, through the comparison of the housing needs and the residential function defined above. Result: Henceforth housing should consider meet the Esteem Needs and Self-Actualization Needs, among the type of Grow-based Motivation. The functions for this are convenience, independence, economics, sociality, relaxation, and expressivity. In addition, it should be able to express oneself and recognize the value of oneself through leisure activities and interaction with neighbors. And, it should be able to move toward the direction to express that hobby activities for individual talent development in separate space.

도시문화와 공동체 의식의 영향 관계 (An Influential Relationship between Urban Culture and Community Spirit)

  • 김동윤
    • 한국디지털건축인테리어학회논문집
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    • 제13권4호
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    • pp.51-60
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    • 2013
  • With regard to urban culture this study aims to essential understanding and systematic approach to the culture. The "2012 Seoul Survey" report has been used to find out causality among the related variables. In the first place 'satisfaction of cultural condition' was operationally selected as a dependent variable for regression. For the purpose of controlling the third factors for ceteris paribus effect correlation analysis was previously done between the dependent variable and all other variables respectively, which resulted in two groups of variables: group (1) - 2 variables of very significant correlations(p-value<0.01) and (2) - the other 6 variables of significant correlations(p-value<0.05). Then hierarchical regression was adopted to these 2 groups to analyse statistical significance of independent variables, and multicollinearity(VIF; variance inflation factor). Additionally to OLS robust and bootstrapping regressions were done to confirm the validity of this model specification. At last a regression model specified by group (1) as independent variables(they are 'community spirit caring for women, the disabled, the poor and the old,' 'satisfaction of bicycle riding condition' shows that the variables have statistically significant and substantially strong effect on 'satisfaction of cultural condition.' This finding implies the following understanding; (1) urban festivals are regarded as the main of the urban culture as of now and this results from the low level of today's culture, (2) culture is telling and hearing stories but the influential relationship between urban culture and community spirit on the weak is negative, which says that the cultural perception among citizen is somewhat selfish and far from the essential understanding of the urban culture. In spite of restrictive external validity this finding can be used as a direction for promoting culture and a basis for related policy choice in cities.

패권경쟁과 해군력의 역할 (Hegemonic Competition and the Role of Naval Power)

  • 김경식
    • Strategy21
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    • 통권41호
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    • pp.108-152
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    • 2017
  • This paper aims to analyze hegemonic competition and the role of naval power. To this end the paper is composed of four chapters titled introduction, the role of naval power in the hegemonic competition, the role of naval power in the East Asia, and the lessons and implications for the Korean Peninsula. Since the modern era, the hegemonic competition in the East Asian region has been the intrusion and struggle process between the world system and the East Asian regional system, and the ocean between these two systems has become the goal and means of supremacy(hegemony). Currently, the hegemonic competition between the US and China consists of systemic competition at the global level and marine competition at the regional level. When South Korea is forced to make strategic choices in the course of the US-China hegemonic competition, naval power will be the first factor to be considered. The ROK is asymmetrically maintaining a deep dependency relationship with the United States in terms of security and China in relation to the economy. And while the ROK's national economic power is acquired from the ocean, the ROK's military power is imbalanced because it is centered on the ground forces. These international relations and asymmetric-unbalanced resources distribution will not be able to effectively cope with the hegemonic competition between the US and China in the future, and will limit Korea's strategic choice. Since naval power and forces are the prerequisites for the hegemonic competition or the maintenance of supremacy we must construct balanced naval forces(naval power) that are not subordinate to the ground forces at the national strategic level for the future of the country.

디지털컨버전스 제품에 대한 소비자만족모델 (Consumer Satisfaction Model for Digital Convergence Products)

  • 유현정
    • 가정과삶의질연구
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    • 제27권5호
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    • pp.25-42
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    • 2009
  • This study examines the actual state of using digital convergence products by consumers, and analyzes the expectation that consumers have regarding digital convergence products and the actual satisfaction of the digital convergence products. In addition, it analyzes factors affecting the satisfaction with digital convergence products. First, mobile phones, which 99.4% of those surveyed had, cameras, which 90.6% had, and mp3s, which 71.8% had, were found to be necessities. Second, the ratio of owning digital convergence products was 79.5%, 48.1%, and 52.4%, respectively. In the case of a mobile phones, a digital convergence type is already common. Third, regarding the reason for purchasing digital convergence products, they chose convergence products because there was no product with a simple function that they wanted to have: 38.2% in terms of a mobile phone, 47.2% for a camera, and 28.2% for an mp3. This shows that a consumer's choice was infringed in a great deal at the back of remarkable quantitative growth in digital convergence products. Fourth, the analysis of the factor regarding the consumer's expectation on digital convergence products showed 3 kinds of factors, i.e., expectation of benefit, expectation of risk, and expectation of situation. Fifth, as a result of analyzing the structural model regarding the effect on satisfaction by a consumer's expectation and the outcome on digital convergence products, all the expectations and outcomes of benefit, risk, and situation did not have a direct effect on satisfaction. Only an indirect effect through inconsistency showed a statistical significance.

천연가스의 열용량을 측정하기 위한 촉매가스센서의 특징 (Characterization of A Catalystic Gas Sensor for Measuring Heat Content of Natural Gas)

  • 이기용
    • 한국가스학회지
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    • 제2권1호
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    • pp.1-6
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    • 1998
  • 전력을 적재 소모하는 (300 mW 이하) 촉매가스센서가 개발되었고, 천연가스에 열용량을 측정하기 위해 컴퓨터로 작동되는 샘플링 시스템에 사용되었다. 가스의 열용량은 촉매자스센서가 감지되는 연소가스에 노출되었을 때 발생된 에너지에 비례된다. 36.30 - 39.88 $MJ/m^3$ 범위의 정격 열용량을 갖는 천연가스의 열용량은 약 $1\%$ 에러 내에서 측정되었다. 각 가스들은 센서의 온도에 대하여 약간씩 다른 감응곡선을 갖고 있다. 따라서 한 온도에서 모든 감응이 같을 수는 없다. 작동 온도는 측정장치의 전 성능에 영향을 미치기 때문에 교정과정에서 최적의 작동 온도를 찾는 것은 중요하다.

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신세대의 의생활양식과 의복선택행동에 관한 연구 (A Study on Clothing Life Style and Clothing Selection Behavior of the New Generation Consumer)

  • 김미경;이선재
    • 복식
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    • 제24권
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    • pp.217-233
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    • 1995
  • The ultimate purpose of this study is to suggest the most effective marketing strategy for the clothing consumer market based on the new generation consumer's clothing selection behavior analysis. In this thesis, it is appempted to make a progress in the new gen-eration consumer's clothing life style types, in clothing purchase behavior analysis among the clothing life style, and also in the marketing strategy for marketers. The subjects selected for the final analysis are 412 the new gerneration women of age 20 thru 34 in seoul and satellite town area. Data were processed the spss package program. As for the analytic method, factor analysis, clustering analysis, XCross-tubulation, F-test with ANOVA, frequency and percentage were applied in the survey. The major findings are as following : life style is classified into four types : The characteristic fashion-directory type(25.7%) ; The reason traditional type(9.0%) ; The sen-sitivity fashion-following type(11.0%) ; The community brand-conscious type(54.3%). 2 Clothing life style types characteristic of the new generation consumer proved that clothing life style types are a significant difference according to the life style, the fashion consciousness and the average monthly spend-ing on clothing. 3. There is an important discrimination according to the clothing life style types in their clothing purchase behavior such as infor-mation usage, clothing choice criterion and brand loyalty. 4. Based on the result of our analysis and the review of literature, the marketing strategy is suggested that characteristic and new design development is efficient way to consumer's purchase need. Therefore apparel industary which pursue an added value must frame marketing strategy on the basis of the target consumer's sensitivity characteristic according to the life style and fashion consciousness.

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