• 한국전자통신학회논문지
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• 제8권11호
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• pp.1655-1664
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• 2013

급변하는 과학기술 환경속에서 효율적인 R&D와 경쟁력 확보를 위해 미래 기술을 예측하고 유망기술을 발굴하고자 하는 활동이 전 세계적으로 활발히 이뤄지고 있다. 이에 본 연구는 고피인용 논문을 분석 방법을 이용해 2008년, 2012년도 각각 과학기술 전분야를 넘나드는 최전선의 연구활동을 확인하고, 2008년과 2012년을 비교해 연구활동의 규모가 급증한 영역을 추출하여 10대 유망기술을 도출하였다. 본 연구결과는 연구개발 및 기업의 전략적, 정책적 의사결정을 지원할 것으로 기대된다.

• 한국실내디자인학회논문집
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• 제21권3호
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• pp.163-173
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• 2012

Despite a lot of efforts, school violence is getting severe nowadays and especially it seems remarkably occurring among middle school students. Many studies show that most school violence occur in classrooms where the students spend most of their time in studying and socializing for their everyday life. The purpose of this study is to identify design elements of middle school classroom and to suggest some design plans for preventing school violence, in the point of view of CPTED. For this objective, six middle schools were selected from Gangseo-gu, Seoul, and the questionnaire and survey were conducted to identify the status of school violence and the physical classroom environment in each schools. An analysis was carried using SPSS to identify the correlation between the school violence and the physical environmental design elements. The results are as follows : although each selected school shows different status of school violence and the physical environment in classrooms, commonly the occurrence and the fear of violence are related to the classroom environment. Therefore, In order to plan classroom for preventing school violence, 'the proper size of classroom avoiding overcrowd', 'elevation design for the sense of belonging and territoriality', 'improvement of deteriorated environment' should be considered for reduce the causes of violence. And 'maximization of natural surveillance from hallway', 'accessibility of teacher' should be considered for rapid management of violence.

• 한국임상수의학회지
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• 제37권1호
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• pp.50-52
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• 2020

Twenty-four cinereous vultures that had been taken to a wildlife center due to starvation and exhaustion were studied to evaluate approaches for determining sex. Coelioscopy was performed to identify sexes of two vultures, whereas, DNA testing was performed to identify the sexes of the 24 vultures. Testes and ovaries could be unambiguously identified with an endoscope and DNA analyses could identify sex sex in most, but not all of the specimens. Although the coelioscopy examination can unambiguously confirm sex, the approach is invasive and requires anesthesia. Thus, coelioscopic examination should only be performed when sex cannot be determined through DNA analysis.

• 동굴
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• 제88호
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• pp.38-44
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• 2008

동굴의 관계적 입지를 파악하기 위하여, 네트워크분석 기법 중 네트워크의 점의 지위 분석을 중심으로 하는 각종 지수를 적용하여 그 효용성을 파악하는데 목적을 두었다. (1)동굴의 연결 강도 및 중앙성에 따른 관계적 입지특성에 관한 고찰, (2)동굴관광지와 주변관광지 또는 다른 동굴관광지 간의 구조적 등위성에 관한 고찰을 하였다. 본 연구에서 고찰한 각종 지수 들은 네트워크상의 동굴의 지위를 파악하는데 매우 유용하여, 주변 관광지와의 관계적 입지특성을 보다 객관적이며 수량적으로 표현가능 함을 밝혔다. 특히, 동굴주변에 다 동굴이 위치하는 경우에는 그들 동굴간의 상호 비교나 구조적 우위성을 파악하는데 매우 유용하다.

• 한국학교보건학회지
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• 제20권1호
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• pp.11-24
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• 2007

Purpose : Health Risk behaviors are a leading cause of preventable morbidity and mortality. Adolescents is a critical transitional period for establishing health behavior for healthy life. The purpose of this study was to describe the types and frequency of the health risk behaviors being performed by middle school students, examine the gender and grade differences of health risk behaviors, and identify the relationship among health risk behaviors. Methods : A total of 1952 early adolescents recruited from 7 middle schools in a district of urban setting completed questionnaires. Youth Risk Behavior Survey-Middle school questionnaires was used to identify the types of health risk behaviors among early adolescents. Data were analyzed by descriptive statistics and Chi-Square test using SAS program . Results : The results showed the frequency for most health risk behaviors and increased with advancing grade level. Males were more likely than females to behaviors related to smoking and violence, whereas females were more likely than males to have suicidal thoughts, be physical inactive and attempt to lose weight. Among health risk behaviors, the relationship of alcohol experience, smoking, and suicide was high. Conclusion : The findings identify a high risk target group among middle school adolescents and suggest that preventive intervention strategies should take into consideration the types with gender and grade, and provided the evidence that one of health risk behaviors may induce the other health risk behaviors.

• Safety and Health at Work
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• 제12권3호
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• pp.365-369
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• 2021

Background: Law enforcement communications (i.e., 911 dispatch and call takers) is a challenging and stressful occupation. The purpose of this study is to identify the main stressors associated with employment in law enforcement communications, and to identify and provide context to how these stressors affect workers' health and wellbeing. Methods: This research study included focus groups with 23 call takers and 911 dispatchers employed by a large, urban law enforcement agency in 2018. Thematic analyses were conducted to identify trends. Results: Four themes of stressors emerged (i.e., the high stakes nature of some 911 calls for service, understaffing, supervisor-related stress, and recruiting practice). Two health-related themes emerged as being occupation-related: weight gain and poor sleep patterns/insufficient sleep). Specifically, participants reported negative eating habits resulting in weight gain and obesity, lack of sleep and irregular sleep schedules, and development of hypertension and/or diabetes since beginning their jobs. Conclusion: Law enforcement communications professionals experience a number of the same stressors facing law enforcement officers in patrol. These stressors, combined with the sedentary nature of the job, could result in long-term, chronic health problems.

• 품질경영학회지
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• 제47권2호
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• pp.327-344
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• 2019

Purpose: This study aims to conduct a systematic literature review to suitably identify wide and specific issues and topics on service quality in supply chain. Methods: This study is to investigate service quality in supply chain research using a systematic literature review methodology. In order to extract influential journals and papers, we used the SJR impact factor provided by the SCOPUS database. The collected 169 papers were analyzed using bibliometric analysis, citation analysis as well as keywords network. Results: We conducted a bibliometric analysis to identify top authors contributing to service quality in supply chain and their issues, and further examined important keywords and new emerging keywords. In addition, we extracted five influential papers by PageRank to clarify critical issues and divided into five clusters to identify topics of service quality in supply chain by using network-based approach. In order to examine comprehensive issues and topics of service quality in supply chain, we constructed a keyword network to observe difference in the classification of important keywords across network centrality measures. Conclusion: Our study reviewed literature on service quality in supply chain and explored the future directions and trends of service quality in supply chain.

• 품질경영학회지
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• 제47권2호
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• pp.381-395
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• 2019

Purpose: This study aims to conduct a systematic literature review to suitably identify wide and specific issues and topics on service quality in supply chain. Methods: This study is to investigate service quality in supply chain research using a systematic literature review methodology. In order to extract influential journals and papers, we used the SJR impact factor provided by the SCOPUS database. The collected 169 papers were analyzed using bibliometric analysis, citation analysis as well as keywords network. Results: We conducted a bibliometric analysis to identify top authors contributing to service quality in supply chain and their issues, and further examined important keywords and new emerging keywords. In addition, we extracted five influential papers by PageRank to clarify critical issues and divided into five clusters to identify topics of service quality in supply chain by using network-based approach. In order to examine comprehensive issues and topics of service quality in supply chain, we constructed a keyword network to observe difference in the classification of important keywords across network centrality measures. Conclusion: Our study reviewed literature on service quality in supply chain and explored the future directions and trends of service quality in supply chain.

• Structural Engineering and Mechanics
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• 제70권4호
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• pp.457-466
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• 2019

This study develops a damage detection method based on neural networks. The performance of the method is numerically and experimentally verified using a three-story shear building model. The framework is mainly composed of two hierarchical stages to identify damage location and extent using artificial neural network (ANN). The normalized damage signature index, that is a normalized ratio of the changes in the natural frequency and mode shape caused by the damage, is used to identify the damage location. The modal parameters extracted from the numerically developed structure for multiple damage scenarios are used to train the ANN. The positive alarm from the first stage of damage detection activates the second stage of ANN to assess the damage extent. The difference in mode shape vectors between the intact and damaged structures is used to determine the extent of the related damage. The entire procedure is verified using laboratory experiments. The damage is artificially modeled by replacing the column element with a narrow section, and a stochastic subspace identification method is used to identify the modal parameters. The results verify that the proposed method can accurately detect the damage location and extent.

• Computers and Concrete
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• 제27권5호
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• pp.447-455
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• 2021

Research on damage detection methods in structures began a few decades ago with the introduction of methods based on structural vibration frequencies, which, of course, continues to this day. The value of important structures, on the one hand, and the countless maintenance costs on the other hand, have led researchers to always try to identify more accurate methods to diagnose damage to structures in the early stages. Among these, one of the most important and widely used methods in damage detection is the use of time-frequency representations. By using time-frequency representations, it is possible to process signals simultaneously in the time and frequency domains. In this research, the Short-Time Fourier transform, a known time-frequency function, has been used to process signals and identify the system. Besides, a new damage index has been introduced to identify damages in concrete piers of bridges. The proposed method has relatively simple calculations. To evaluate the method, the finite element model of an existing concrete bridge was created using as-built details. Based on the results, the method identifies the damages with high accuracy.