• 한국안전학회지
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• 제36권1호
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• pp.36-43
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• 2021

Effective leadership in safety performance, such as safety leadership, has received attention as a factor that greatly affects safety performance in various high-risk industrial environments. Based on prior research, this study aims to analyze the impact relationship between safety leadership, safety observance, safety education, and safety culture to reveal the effectiveness of safety leadership. In addition, this study will examine the effects of safety leadership on safety observance and safety education to identify the effects of safety understanding. For this purpose, a survey was conducted with employees of an aviation manufacturing company in Gyeongnam. For verification, a positive factor analysis, correlation analysis, and structural equation analysis were conducted using the AMOS 21.0 program. This study's findings show that, first, safety leadership has a positive and significant impact on safety observance and safety education. Second, safety leadership was found to have a direct impact on organizations' safety culture. Third, although safety observance has significant positive effects on safety culture, safety education has often been rejected. Finally, after verifying the control effect of safety understanding, this study uncovered the presence of an adjustment effect in the effect of safety leadership on safety observance. Therefore, based on the results of this study, theoretical and practical implications suggest that through the exercise of safety leadership, managers can improve their organizations' safety culture by increasing organizations' compliance with safety observance and/or acceptance of safety education.

• International Journal of Computer Science & Network Security
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• 제22권2호
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• pp.385-393
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• 2022

In the study of the mechanism of labor motivation as a determinant of economic security of the enterprise in competitive conditions, it was found that motivation is determinant in creating the conditions for production and ensuring the active functioning of the enterprise. It is substantiated that the motivational mechanism is the presence of a system of levers, incentives, measures and other elements for economic and administrative incentives for employees, which are used for incentives to work, increase productivity and safety, and more. The motivational mechanism plays an important role in ensuring the economic security of the enterprise and at the same time is a lever to increase competitiveness in the market. The functions of the mechanism of labor motivation are singled out, among which: explanatory-substantiating, regulative, communicative, socialization, regulating. The stages of occurrence of the motive for the employee are classified. The interrelation of motives and incentives in the mechanism of labor motivation as determinants of economic security of the enterprise in competitive conditions is proved. It is proved that the mechanism of labor motivation as a determinant of economic security of the enterprise in competitive conditions should be aimed at: assistance in forming and achieving goals and objectives of the enterprise and achieving balance and equilibrium of economic goals and social responsibility of the enterprise; ensuring close cooperation between management and employees of the enterprise; focus on building a flexible mechanism; transition to a democratic style of governance and involvement of employees in decision-making.

• International Journal of Computer Science & Network Security
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• 제22권1호
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• pp.105-112
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• 2022

The development and spread of IT-technologies has raised interest in teaching programming pupils. The article deals with problems related to programming and ways to overcome them. The importance of programming skills is emphasized, as this process promotes the formation of algorithmic thinking of pupils. The authors determined the level of pupils' interest to programing learning depending on the age. The analysis has showed that the natural interest of younger pupils in programming is decreasing over the years and in the most productive period of its study is minimized. It is revealed that senior school pupils are characterized by low level of interest in the study of programming; lack of motivation; the presence of psychological blocks on their own abilities in the context of programming; law level of computer science understanding. To overcome these problems, we conducted the second stage of the experiment, which was based on a change in the approach to programing learning, which involved pupils of non-specialized classes of senior school (experimental group). During the study of programming, special attention was paid to the motivational and psychological component, as well as the use of game technologies and teamwork of pupils. The results of the pedagogical experiment on studying the effectiveness of teaching programming for pupils of nonspecialized classes are presented. Improvement of the results provided the use of social and cognitive motives; application of verbal and non-verbal, external and internal means; communicative attacks; stimulation and psychological setting; game techniques, independent work and reflection, teamwork. The positive effect of the implemented methods is shown by the results verified by the methods of mathematical statistics in the experimental and control groups of pupils.

• International Journal of Computer Science & Network Security
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• 제21권11호
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• pp.301-311
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• 2021

The technological advancements of the last two decades directed the era of the Internet of Things (IoT). IoT enables billions of devices to connect through the internet and share their information and resources on a global level. These devices can be anything, from smartphones to embedded sensors. The main purpose of IoT is to make devices capable of achieving the desired goal with minimal to no human intervention. Although it hascome as a social and economic blessing, it still brought forward many security risks. This paper focuses on providing a survey of the most commonly used application layer protocols in the IoT domain, namely, Constrained Application Protocol (CoAP), Message Queuing Telemetry Transport (MQTT), Advanced Message Queuing Protocol (AMQP), and Extensible Messaging and Presence Protocol (XMPP). MQTT, AMQP, and XMPP use TCP for device-to-device communication, while CoAP utilizes UDP to achieve this purpose. MQTT and AMQP are based on a publish/subscribe model, CoAP uses the request/reply model for its structuring. In addition to this, the quality of service provision of MQTT, AMQP, and CoAP is not very high, especially when the deliverance of messages is concerned. The selection of protocols for each application is very a tedious task.This survey discusses the architectures, advantages, disadvantages, and applications of each of these protocols. The main contribution of this work is to describe each of the aforementioned application protocols in detail as well as providing their thorough comparative analysis. This survey will be helpful to the developers in selecting the protocol ideal for their system and/or application.

• 한국컴퓨터정보학회논문지
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• 제27권2호
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• pp.81-89
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• 2022

본 연구는 <데이비드 호크니>전의 인스타그램 게시물의 이미지를 분석하고, 이에 대한 시사점을 도출하는데 목적을 두었다. 본 연구는 인스타그램 게시물로부터 24,295개의 이미지를 크롤링했으며, 구글 클라우드 비전 API를 활용해서 라벨링을 진행했다. Word2Vec을 통해 총 212,567개의 라벨이 9개로 유형화되었으며, 사람 라벨 유형과 함께 미술관 공간, 포토존, 건축물 등의 빈도수가 높게 제시되었다. 결론적으로 관람객은 전시를 경험하면서 물리적 장소와 공간에 대한 경험과 기억을 큐레이팅했다. 이 결과는 사회적 현존감과 장소 만들기를 강조했던 선행 연구의 결과를 재 입증해 주었다. 본 연구에서 사용된 예술경영과 예술 공학의 융합적 접근방법론은 실무적 차원에서 박물관 및 미술관 전문 인력이 빅 데이터 기반 관람객 연구에 대한 통찰력을 획득하는데 도움을 줄 것으로 기대한다.

• 정보교육학회논문지
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• 제26권3호
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• pp.175-186
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• 2022

정부는 감염병 사태를 극복하고 이로 인한 학습공백을 메우기 위해 다양한 정책적 제언과 관련 법령을 정비하는 등 원격수업 혁신 의지를 내비쳤다. 이러한 흐름에 발맞추고자 이 연구는 원격수업의 유형을 구분하고, 대학 학습자를 대상으로 원격수업의 유형에 따라 어떠한 차이가 있는지 규명하였다. 이를 위해 서울 소재 K대학교 569명의 학습자 대상으로 설문을 실시하였으며, 수집된 결과는 빈도분석, 신뢰도 및 타당도 검증, 검정, 다중회귀분석 등으로 통계분석 처리되어 다음과 같은 결론과 시사점이 도출되었다. 첫째, 동시적 원격수업의 학습지속의향을 촉진시키는 요인으로 지각된 유용성이 도출되었다. 따라서 해당 수업에 대한 적절한 교수전략 탐색, 안정적인 인프라 구축과 같은 다양한 전략을 안배하여 학습자의 인식을 개선시켜 주어야 할 필요가 있다. 둘째, 비동시적 원격수업의 학습지속의향을 촉진시키는 요인으로 지각된 유용성, 사회실재감, 시스템품질이 도출되었다. 그러므로 해당 수업에 대한 유용성 인식개선뿐만 아니라, 원만한 상호작용과 적시 피드백, 강의 품질관리가 수반되어야 학습자의 학습지속의향이 촉진될 것이다.

• 대한방사선기술학회지:방사선기술과학
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• 제45권3호
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• pp.263-272
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• 2022

This study investigated small and medium-sized hospital workers' knowledge of COVID-19, the infection-control-related fatigue and stress levels, and the factors that impacted their performance during the COVID-19 pandemic. Using a cross-sectional design, data were collected from 137 hospital workers from four small and medium-sized hospitals in S and C cities. Data were analyzed using descriptive statistics, a t-test, analysis of variance(ANOVA), Pearson's correlation coefficient, and multiple linear regression analysis. Small and medium-sized hospital workers' knowledge of COVID-19 revealed a correct answer rate of 66%. An average of 3.00 points out of 4 for infection control performance and 3.32 and 3.17 points out of 5 for infection-control-related fatigue and stress, respectively, were found. The level of knowledge regarding COVID-19 significantly differed by age and marriage (p<0.05), while infection control performance significantly differed by age, marriage, and infection control education experience (p<0.05). Infection-control-related fatigue and stress differed depending on the COVID-19 control education experience, economic and social prejudice, and fear of discrimination. There were positive correlations between knowledge and infection control performance, and infection control performance and infection-control-related fatigue and stress (p<0.001). This study showed that the factors that affected small and medium-sized hospital workers' performance included knowledge of "environmental management," "difficulties due to new role requirements," "presence or absence of infection education experience," "job type," and "age." These results suggest that practical and detailed education programs should be systematically developed and implemented for effective infection control.

• Journal of Preventive Medicine and Public Health
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• 제56권2호
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• pp.145-153
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• 2023

Objectives: Although it is difficult to define the quality of stroke care, acute ischemic stroke (AIS) patients with moderate-to-severe neurological deficits may benefit from thrombectomy-capable hospitals (TCHs) that have a stroke unit, stroke specialists, and a substantial endovascular thrombectomy (EVT) case volume. Methods: From national audit data collected between 2013 and 2016, potential EVT candidates arriving within 24 hours with a baseline National Institutes of Health Stroke Scale score ≥6 were identified. Hospitals were classified as TCHs (≥15 EVT case/y, stroke unit, and stroke specialists), primary stroke hospitals (PSHs) without EVT (PSHs-without-EVT, 0 case/y), and PSHs-with-EVT. Thirty-day and 1-year case-fatality rates (CFRs) were analyzed using random intercept multilevel logistic regression. Results: Out of 35 004 AIS patients, 7954 (22.7%) EVT candidates were included in this study. The average 30-day CFR was 16.3% in PSHs-without-EVT, 14.8% in PSHs-with-EVT, and 11.0% in TCHs. The average 1-year CFR was 37.5% in PSHs-without-EVT, 31.3% in PSHs-with-EVT, and 26.2% in TCHs. In TCHs, a significant reduction was not found in the 30-day CFR (odds ratio [OR], 0.92; 95% confidence interval [CI], 0.76 to 1.12), but was found in the 1-year CFR (OR, 0.84; 95% CI, 0.73 to 0.96). Conclusions: The 1-year CFR was significantly reduced when EVT candidates were treated at TCHs. TCHs are not defined based solely on the number of EVTs, but also based on the presence of a stroke unit and stroke specialists. This supports the need for TCH certification in Korea and suggests that annual EVT case volume could be used to qualify TCHs.

• 지역연구
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• 제39권1호
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• pp.21-36
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• 2023

사회·경제적 여건 변화에 따른 저성장시대에 진입하며, 전국 대부분의 도시에서 도시재생을 적극적으로 추진하고 있다. 도시재생은 막대한 국가재정이 투입된 사업임에도 불구하고, 아직 명확한 평가시스템이 마련되지 못하였다. 도시재생사업의 지속가능성을 담보하기 위해 도시재생사업의 성과를 평가하고, 정책을 보완하기 위한 환류체계 구축이 필요하다. 본 연구에서는 도시재생사업의 성과를 평가하기 위한 공간 빅데이터 기반의 도시재생성과 평가기법을 개발하는 것을 목적으로 한다. 도시재생성과 평가기법은 도시재생사업 유형, 대도시·중도소시 여부 등을 기준으로 도시재생사업 영향권을 차등화하였다. 인구·사회, 산업·경제, 물리·환경 측면 평가지표의 도시재생사업 영향권 내부·외부 간의 상대적 비교를 통해, 도시재생사업의 성과를 정량적으로 측정하였다.

• 문화기술의 융합
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• 제9권1호
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• pp.75-81
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• 2023

본 연구는 창업의 지각된 가치와 지각된 위험이 예술전공 대학생의 창업의도에 미치는 영향을 알아보고 부모·형제의 창업경험과 세부전공에 따른 창업의도 정도의 차이를 분석하였다. 연구결과 창업의 지각된 가치는 창업의도에 유의한 영향을 주는 것으로 나타났으며 창업의 지각된 위험의 구성요인 중에서 재무적 위험은 창업의도에 유의한 영향을 주지만 사회적 위험요인과 경력 위험요인은 유의한 영향을 주지 않는 것으로 나타났다. 또한, 예술계열의 세부전공 중에서 공예전공 대학생은 다른 전공에 비하여 창업의도가 높은 것으로 나타났고 부모·형제의 창업을 간접적으로 경험한 대학생이 그렇지 않은 대학생에 비하여 창업의도가 높으며 부모·형제의 창업경험 유무는 창업의 지각된 가치와 지각된 위험이 창업의도에 미치는 영향관계에서 조절효과를 갖는 것으로 나타났다.