• Advances in Computational Design
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• 제6권1호
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• pp.55-75
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• 2021

The lightweight superstructure is beneficial for bridges in remote areas and emergency erection. In such weight-sensitive applications, the combination of fiber-reinforced polymer (FRP) as a material and box-beams as a structural system have enormous scope. This combination offers various advantages, but as a thin-walled structure, their designs are often governed by buckling criteria. FRP box-beams lose their stability either by flange or web buckling mode. In this paper, the web buckling behavior of simply supported FRP box-beam subjected to transverse load has been studied by modeling full box-beam to consider the effect of real state of stress (stress variation in length direction) and boundary conditions (rotational restraint at web-flange junction). A parametric study by varying the sectional geometry and fiber orientation is carried out by using ANSYS software. The accuracy of the FE models was ensured by verifying them against the available results provided in the literature. With the help of developed database the influential parameters (i.e., αs, βw, δw and γ) affecting the web bucklings are identified. Design trends have been developed which will be helpful to the designers in the preliminary stage. Finally, the importance of governing parameters and design trends are demonstrated through pedestrian bridge design.

• 한국학교ㆍ지역보건교육학회지
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• 제20권1호
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• pp.43-56
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• 2019

Objectives: This study was to investigate the effects of sexual orientation related to sexual intercourse on smoking behavior. Methods: The study includes 33,309 Korean high school students. Of these, 31,213 had no experience of sexual intercourse, 1,739 had sexual intercourse with the heterosexual, 191 had sex with the homosexual, and 166 had sexual intercourse with the bisex. The study used 12th(2016) Korea Youth Risk Behavior Web-based Survey with complex sample logistic regression. Results: Adjusted confounding variables were analyzed, and it showed that smoking behavior was higher in the group had experienced sexual intercourse. The group had homosexual intercourse (OR=1.84, 95%CI=1.31-2.57) or bisexual intercourse (OR=2.78, 95%CI=2.06-3.76) showed higher risk of smoking behavior than the group had heterosexual intercourse (OR=1.67, 95%CI=1.48-1.90 Conclusions: The study results showed sexual orientation related to sexual intercourse was associated with smoking behavior. Further follow up studies and evaluations are needed.

• 한국멀티미디어학회논문지
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• 제22권2호
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• pp.299-310
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• 2019

Most web documents are written in Cartesian coordinates, so the study of vertical arrangement of text has been well organized, while the study of circular arrangement is very early. With the recent development of circular display devices, the demand for circular arrangement of texts is increasing. Thus, we proposed a CSS3 extended specification of polar coordinate layout for the circular placement of text. First, we defined the concept of fan model for the text arrangement in polar coordinate which is corresponding to box model in Cartesian coordinate. And, we described new definition on the directions of sentence, paragraph and text orientation in polar coordinate. Based on this new definitions, we developed the extended specification consisting of three parts. A part for setting the fan model, a part for setting directions, and a part for setting typesetting properties. To verify the feasibility of the proposed specification in current web browsers, a preprocessor was developed and sample contents were examined. We compared the code length of the sample contents implemented using other JavaScript library CssWarp.js so as to verify the efficiency of the proposed specification.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2008년도 정기총회 및 학술발표대회
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• pp.661-664
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• 2008

U-Eco City is promoted nation-wide by development of recent IT technology, method of effective countermeasure disasters, which real-time wire/wireless communication network, and 3D-Web GIS shall be connected that massive database, intelligent service be perceived. U&V-City is the four-dimensional future city that actualizes an intelligent daily ubiquitous computing service by embodying 3D-Virtual City, the reproduction of real world U-City while using Digital map, satellite image, VRML(Virtual Reality Modeling Language), which are presentation tool to describe city components and by efficiently catch and cope about nature and human disasters while employing EAI(External Authoring Interface) that provides HTML&JAVA, and interface for efficient removal/process of massive information/service and also by employing GPS/LBS/Navigation in support of the world-wide orientation concept, and RTLS(Real Time Location System).

• 한국의류학회지
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• 제32권9호
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• pp.1387-1396
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• 2008

The objective of this study was to identify differences between internet fashion shoppers and non-shoppers in their fashion shopping orientation and attitude toward internet shopping site service. Also behavior of internet shoppers and non-shoppers was compared by gender. Twelve hundred and ninety two responses were obtained from an online survey. 20 items were used to measure shopping orientation and 13 items to measure attitude toward internet shopping site service, which were modified from previous studies. Some demographics and internet familiarity were asked. Factor analysis, t-test, chi-square test, and regression were conducted. Factor analysis produced five fashion shopping orientation factors such as fashion oriented, shopping oriented, brand oriented, personality oriented, and value oriented. Attitude toward internet shopping site service were classified into three factors, at-site service, after purchasing service, and product information. Internet fashion shoppers and non-shoppers were significantly different in most items of shopping orientation and attitude toward internet site service. Internet shoppers were likely to be fashion oriented, to enjoy shopping, to pursue brandname and personality, and to concern price more than non-shoppers were. Internet shoppers also had more favorable attitude toward product information and at-site service. Also, shoppers were more familiar than non-shoppers to the internet in terms of duration of web-browsing. Ratio of men and women differed significantly for shopper vs. non-shopper groups. Female shoppers were likely to be more fashion, shopping. and value oriented but to have less favorable attitude for after purchasing service than male shoppers.

• Journal of Preventive Medicine and Public Health
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• 제57권1호
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• pp.28-36
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• 2024

Objectives: This study investigated the impact of socioeconomic factors and sexual orientation-related attributes on the rates of coronavirus disease 2019 (COVID-19) vaccination and infection among men who have sex with men (MSM). Methods: A web-based survey, supported by the National Research Foundation of Korea, was conducted among paying members of the leading online portal for the lesbian, gay, bisexual, transgender, or queer and questioning (LGBTQ+) community in Korea. The study participants were MSM living in Korea (n=942). COVID-19 vaccination and infection were considered dependent variables, while sexual orientation-related characteristics and adherence to non-pharmacological intervention (NPI) practices served as primary independent variables. To ensure analytical precision, nested logistic regression analyses were employed. These were further refined by dividing respondents into 4 categories based on sexual orientation and disclosure (or "coming-out") status. Results: Among MSM, no definitive association was found between COVID-19 vaccination status and factors such as socioeconomic or sexual orientation-related attributes (with the latter including human immunodeficiency virus [HIV] status, sexual orientation, and disclosure experience). However, key determinants influencing COVID-19 infection were identified. Notably, people living with HIV (PLWH) exhibited a statistically significant predisposition towards COVID-19 infection. Furthermore, greater adherence to NPI practices among MSM corresponded to a lower likelihood of COVID-19 infection. Conclusions: This study underscores the high susceptibility to COVID-19 among PLWH within the LGBTQ+ community relative to their healthy MSM counterparts. Consequently, it is crucial to advocate for tailored preventive strategies, including robust NPIs, to protect these at-risk groups. Such measures are essential in reducing the disparities that may emerge in a post-COVID-19 environment.

• 대한인간공학회지
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• 제24권1호
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• pp.19-26
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• 2005

Mobile internet access using such devices as PDAs and cellular phones becomes popular as mobile technologies grow. However, the characteristics of small screen devices such as small screen size and pen-based input cause many usability problems. In this study, a human factors experiment was conducted to identify the factors affecting the usability of information search on a PDA. Factors manipulated in the experiment included use of wheel equipment, scroll dimension, and screen orientation. Task completion time, error frequency, and subjective satisfaction level were measured. In addition, various users' behavioral patterns such as scanning routes and mainly used scrolling methods were analyzed. Scroll dimension has a significant effect on task completion time. Scroll equipment and screen orientation affect subjective satisfaction level. The results could be applied to designing information structure of web sites for mobile use by providing vertical scroll and using external scroll equipments.

• 한국콘텐츠학회논문지
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• 제10권12호
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• pp.155-163
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• 2010

기존 스마트폰 응용프로그램 개발 시 단점으로 부각된 다양한 플랫폼 환경 설정 고려와 이종 기기의 호환성 문제점 등 한계성이 들어나면서 자연스럽게 모바일 웹 응용프로그램 개발이 대안으로 부각되고 있다. 모바일 웹 응용프로그램 종류의 하나인 하이브리드용 웹 응용프로그램은 스마트폰에 내장된 웹킷엔진을 이용하기 때문에 간단하게 개발될 수 있다는 장점이 있다. 스마트폰의 웹킷 탑재로 응용프로그램 개발자는 HTML과 자바스크립트, CSS 만으로도 쉽고 빠르게 개발할 수 있을 뿐만 아니라 다양한 모바일 기기에 서비스를 제공할 수 있다. 웹킷은 스마트폰 웹 브라우저에서 모바일 친화적인 고성능 렌더링 엔진이다. 본 논문에서는 웹 응용프로그램 개발 시 고려해야할 웹킷 인터페이스의 성능과 기능을 비교 분석하였다. 또한 실제 모바일 웹 응용프로그램에 웹킷 메소드들이 어떻게 쓰이고 있는지 분석하였으며, 아이폰과 안드로이드폰 중 웹 응용프로그램 개발 시에 어떠한 환경이 개발자에게 편리한지도 분석하였다. 그 결과 아이폰 웹킷 성능이 안드로이드 보다 뛰어나다는 것을 알 수 있었다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2013년도 추계학술대회
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• pp.588-590
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• 2013

본 연구는 웹사이트에서 소비자들이 추구하는 가치가 소비자의 웹사이트에 대한 태도와 이용의도, 그리고 구전효과에 미치는 영향을 탐색하고자 한다. 본 연구에서 소비자들이 웹사이트 이용 시 추구하는 쇼핑가치는 경제적 가치, 정보적 가치, 오락적 가치로 구분된다. 소비자가 어떠한 쇼핑가치를 추구하느냐 하는 가치추구성향은 이후 소비자가 웹사이트를 이용하는 태도와 타인에게로의 홍보와 같은 구전효과에 유의한 영향을 미치게 된다. 나아가 본 연구는 소비자의 개인적 성향을 사고형(thinking)-감정형(feeling) 성격유형으로 간주하며, 이러한 성격유형에 따라 추구하는 쇼핑가치와 태도 간 관계가 달라질 것이라는 가설을 조절효과를 통해 검증한다. 이 같은 연구모형을 검증하기 위해 본 연구는 오프라인 패밀리레스토랑 이용과 더불어 해당 레스토랑의 홈페이지를 함께 활용했던 경험이 있는 고객들을 대상으로 설문 조사와 Lisrel 분석을 진행하였다. 분석결과, 소비자들의 경제적 쇼핑가치지향, 정보적 쇼핑가치지향, 그리고 오락적 쇼핑가치지향이 강할수록 패밀리레스토랑 홈페이지에 대한 보다 우호적인 태도가 나타나며, 이는 곧 홈페이지의 이용에 대한 의도 및 구전효과에도 긍정적인 영향을 미치게 된다. 사고형-감정형 성격유형의 조절효과 분석결과를 보면, 사고형 성격을 지닌 소비자는 감정형 소비자보다 경제적 가치지향 및 오락적 가치지향에 몰입하여 이후 웹사이트 태도를 결정하는 성향을 보이는 것으로 나타났다.

• 한국가정과교육학회지
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• 제12권3호
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• pp.19-38
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• 2000

This study is about open and secondary level Home Economics Education which is applicable to field and which includes the characteristics, purpose and problems of each open education, secondary education and home economics education. Based on the ideology of open education this study will identify the meaning of openness in terms of Home Economics Education reconstructing meaning purpose, characteristics, curriculum paradigm and curriculum. The instructional model and module which use web, will be presented as the results o the reconstruction works. The open instructional module in Home Economics Education which will be operated on the web is consisted of 1) setting the orientation of curriculum development 2) instructional model development 3) rebuilding the Home Economics Education curriculum 4)development of instructional modules and web-based materials and 5)construction of the web-site. Six instructional module begin with critical/emancipatory curriculum paradigm in open Home Economics Education use module as a unit of class management instead of 1 class, facilitates nest-type integration which is applied from open education keeping the nature of Home Economics Education and focus on practical problem and problem solving through reconceptualization with dialectical perspective on individual, family and society. The practical problem solving model has four steps: Identifying practical problems. Understanding the contexts of problem, Searching for solutions and examining its consequences, Action and evaluation. The web-site has to be developed based on the six instructional module includes those issues : self-identification for reinforcing autonomy and self-esteem, living with family living with friends, autonomous living healthy living and understanding sexuality.