• 한국의류산업학회지
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• 제11권1호
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• pp.174-179
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• 2009

The purpose of this study is to research the actual condition of working environment, working clothes and personal protective equipments on workers at a construction site in winter. The one to one interview by questionnaire was performed with 33 males and 2 females workers of a construction site in Daegu at $1.3^{\circ}C$ air temperature, 28% R.H., 4.7m/sec air velocity. The questionnaire consisted of 21 questions including 4 personal characteristics questions, 12 working environment/performance questions and 5 working clothes/personal protective equipments questions. It was modified from the original questionnaire developed by Finnish Institute Occupational Health. We found that physical stress of workers increased and the ability of performance decreased. The workers felt the coldest at hands/fingers, feet/toes and the face part of cheek, nose and ears. They rarely wore thermal clothing for winter and answered that the thermal gloves for winter did not provided enough warmth. Even if the workers recognized the necessity of personal protective equipments for their safety, they did not wear them for efficiency of working performance. These results will be useful elementary materials for development of working clothes and personal protective equipments from the viewpoint of improving both working performance and comfort.

• Smart Structures and Systems
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• 제21권2호
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• pp.139-149
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• 2018

Understanding the current status of a construction project is necessary to achieve successful on-site management. Real-time information delivery is a major concern for construction industry practitioners in order to expedite decisions and discussions. We propose the use of a first personal view (FPV) system of a quadcopter drone as a tool for monitoring on-site status and communicating between construction participants. The most important function of the drone FPV system is its ability to visually monitor construction site situations in real time. An on-site management system process is developed, verified, and applied to several construction work tasks after determining factors that affect efficient construction management. The proposed system is expected to assist the construction manager in achieving high efficiency.

• 정보화정책
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• 제19권2호
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• pp.21-38
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• 2012

인터넷의 발전과 전자상거래의 확산에 따라 정보 프라이버시가 주요한 이슈로 부각되고 있다. 온라인상의 정보 프라이버시에 관한 연구들은 주로 인터넷 사용자들의 정보제공행동(의도)의 선행요인들을 규명하는데 초점을 맞추고 있으나, 사용자들의 사이트 이용경험의 차이에 따른 선행요인의 영향 변화를 고려하지 않고 있다. 본 연구에서는 인터넷 사용자들의 개인정보제공 의사결정이 사이트 이용경험에 따라 어떻게 영향 받는지를 실증적으로 규명하고자 한다. 이를 위하여 사이트 이용과정에서 사이트가 요구하는 개인정보의 속성(정보의 민감도와 관련성)과 사이트에서 제공하는 서비스의 가치를 개인정보 제공의도의 선행 요인으로 설정하여, 이 선행 요인들의 영향에 대한 사이트 이용경험의 조절효과를 실증 분석하였다. 웹 기반 실험을 통해 수집된 데이터의 분석 결과는 정보 속성의 영향에 대한 사이트 이용경험의 조절효과를 보여준다. 구체적으로, 사이트 이용경험이 없는 집단에 비하여, 이용경험이 있는 집단의 경우 개인정보 제공에 대한 민감도의 부정적 영향이 감소하는 반면 관련성의 긍정적 영향은 증대되는 것으로 나타났다. 분석 결과를 바탕으로 인터넷 사용자들의 정보 프라이버시 우려 완화를 위한 시사점과 함께 이론적 시사점을 제시하였다.

• 지식경영연구
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• 제12권5호
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• pp.25-40
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• 2011

Today, Internet users start off using heavily SNS(Social Network Site) such like, Facebook, Twitter. The reason of the growth of using SNS would be closely related to the various services of gaming, playing, entertainment items, sharing information etc., provided by the SNS, technically, the most important one out of the services provided would be behaving of sharing knowledge among people who connected and networked in the site. In sum, we assume that the users may communicate well each other and pay attention to build closely a social network using that kind of activities. However, nevertheless the new trends of communications and sharing knowledge become popular, researchers have just began the research issues in explaining why Internet user rush into SNS and enjoy the time in there. Therefore, we investigate on the reasons of posting knowledge voluntarily in the SNS and how others response to the posted information and actually affected by the behavior. We appled personal relation and social identity theory for this study, which personal relation in SNS may affect on social identity and make them produce knowledge generation. We found that social identity and involvement in SNS is closely related and influence knowledge creation and generation. This empirical study resulted in the importance of social relations in SNS, which leads to a sharing knowledge.

• 한국대기환경학회지
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• 제16권6호
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• pp.625-631
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• 2000

Practical devices for measuring personal exposure to nitrogen dioxide(NO$_2$) have been made for epidemiological studies of the health effects of air pollution Standard methods for NO$_2$ measurement such as the chemiluminescent method and Saltzman method are not suitable for personal exposure because they are heavy, large and complicated to operate. In this study, a passive monitor was tested for the measurements of indoor and outdoor NO$_2$ level. Through a comparative analysis of data sets obtained by on-site chemiluminescence system, we assessed the accuracy and precision of NO$_2$ passive monitors. We also examined the possibility of passive monitor in the study of indoor, outdoor and personal NO$_2$ exposure. The accuracy and precision of NO$_2$ passive monitor were analyzed assuming measurements of on-site chemiluminescence system is reference value and using duplicated measure- ments, respectively. From these analysis the NO$_2$ passive monitor was useful for measuring indoor, outdoor and personal exposure. And NO$_2$ level from on-site chemiluminescence systems could not properly represent the personal NO$_2$ exposure as well as indoor and outdoor level of ones house. Personal exposures were correlated more strongly with indoor NO$_2$ concentrations than with outdoor NO$_2$ concentrations. Since activity pattern of each person is different, it was considered that personal daily behavior and life-style might prevent the air pollutant exposure.

• Journal of electromagnetic engineering and science
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• 제10권4호
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• pp.290-295
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• 2010

In this paper, an interference analysis method with a site-specific path loss model for a wireless personal area network (WPAN) is proposed. The site-specific path loss model is based on geometrical optics and geometric probability to consider both site-specific radio propagation characteristics and a closed-form expression to obtain the mean interference from which the uniformly distributed multiple interferers are derived. Therefore, the proposed interference analysis method can achieve more computational simplicity than the Monte-Carlo (MC) simulation, which uses the ray-tracing (RT) technique. In addition, better accuracy than the conventional interference analysis model that uses stochastic method can also be achieved. To evaluate the proposed method, a signal to the interference-noise ratio with a mean interference concept for uniformly distributed interferers is calculated and compared in two simulation scenarios. As a result, the proposed method produces not only better matched results with the MC simulation using the RT technique than the conventional interference analysis model, but also simpler and faster calculation, which is due to the site-specific path loss model and closed-form expression for interference calculation.

• 대한가정학회지
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• 제39권7호
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• pp.145-163
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• 2001

The purpose of this study was to evaluate counseling services in consumer counseling sites. We analyzed the contents and services of consumer counseling from the following internet sites; http : //www . gcn. or. kr , http : //www. jubuclub. or. kr, http : //www. cacpk. erg, http : //www . tor. co. kr/~ consumer, http : //civ. miriman. co. kr, http ://my. netian .com/~rokmc9. The major findings were summarized as follows: (1) All sites provided both a lot of information on consumer affairs and services for consumer counseling. (2) Two out of six private consumer counseling sites were technically inappropriated. They are wow.gen.or.kr and cia.miriman.co.kr (3) Consumer counseling services with specialized information and laws on consumer affairs were more likely provided from sites of consumer organizations than personal sites. (4) Personal sites made more consumer friendly communication than organization sites.

• 정보교육학회논문지
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• 제8권4호
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• pp.489-500
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• 2004

본 논문에서는 244개 국공립 초등학교 홈페이지를 직접 접속하여 불건전 정보 유통과 개인정보 노출 측면에서 학교 홈페이지의 안전 실태를 조사하였다. 홈페이지 게시판에 음란물과 상업성 광고들이 나타나는 학교가 62.7%에 달하였으며, 87.3%의 학교가 학생들의 사진, 주소, 전화번호와 같은 학생의 개인정보를 노출시키고 있었다. 분석 결과 불건전 정보의 유통은 대부분 자동등록 프로그램에 의한 것으로, 이는 무분별한 게시판 개설 및 부적절한 관리에 기인한다. 이와는 대조적으로 개인정보 노출은 교사와 학생들의 부주의한 정보관리에서 비롯되었다. 이것은 교사와 학생들이 개인정보 노출에 따른 위험성을 제대로 알지 못하고 있다는 것을 나타내는 것이다. 따라서 안전한 학교 홈페이지의 구축과 이용을 위해서는 먼저 실명에 의한 회원관리와 게시판 사용권한에 대한 통제가 강화되어야 한다. 그리고 현재 학교 홈페이지에 나타나는 역기능은 물론 잠재적 위험요인에 대한 교사의 올바른 인식이 필요하다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2010년도 춘계학술대회
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• pp.303-306
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• 2010

웹사이트를 통한 해커들의 악의적인 웹 취약점 공격으로 개인정보와 개인자산이 유출되고 있다. 일부국가에서는 해커부대가 운용되어, 타 국가의 웹사이트를 통해 기밀정보 및 개인정보를 불법적으로 접근하여 자료를 획득하고 있다. 국내 웹사이트들은 프로그램뿐만 아니라 웹사이트 관리의 문제로 인해 많은 취약점을 갖고 있다. 본 논문에서는 국내뿐만 아니라 전 세계적으로 유행하는 XSS, SQL Injection, Web Shell 공격에 대한 취약점을 분석하고, XSS, SQL Injection, Web Shell 공격을 직접 공격한다. 공격 후에 해킹을 시연한 자료를 수집, 분석을 하여 보안 대응책을 제시한다. 본 연구는 웹사이트 보안과 안전한 웹사이트 관리를 향상 시킬 수 있는 기술연구에 이바지 할 것이다.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2002년도 춘계공동학술발표회요약집
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• pp.364.1-364
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• 2002