• Safety and Health at Work
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• v.14 no.2
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• pp.207-214
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• 2023

Background: Occupational safety issues related to food delivery riders emerge with evidence of an increase in associated traffic accidents and injuries along with the rapid growth of the online food delivery business. This paper focuses on food delivery riders' job stress and investigates its relationships with both antecedents and risky riding outcomes. Method: Survey data were collected from 279 Taiwanese food delivery motorcycle riders and analyzed using hierarchical regression analysis. Results: The results show that job overload and time pressure positively impact riders' job stress, while self-efficacy slightly reduces job stress. Job stress positively leads to risky driving behavior and distraction. In addition, time pressure can strengthen the impact of job overload on job stress. Riders' risky riding attitude can also strengthen the impacts of job stress on risky riding behaviors and distraction. Conclusion: This paper advances the literature on online food delivery as well as the occupational safety improvement of food delivery riders. Specifically, this study provides insights into the job stress of food delivery motorcycle riders and the effects of job characteristics and risky behavioral consequences.

• Steel and Composite Structures
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• v.46 no.2
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• pp.211-220
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• 2023

Welded hollow spherical joints are commonly used joints in space grid structures. An internal stiffener is generally adopted to strengthen the joints when large hollow spheres are used. To further strengthen it, external stiffeners can be used at the same time. In this study, axial compression tests are conducted on four full-scale 550 mm spherical joints. The failure modes and strengths of the tested joints are investigated. It shows that the external stiffeners are able to increase the strength of the joint up to 25%. A numerical model for large spherical joints with stiffeners is established and verified against the experimental results. Parametric studies are executed considering six main design factors using the verified model. It is found that the strength of the spherical joint increases as the thickness, height and number of the external stiffeners increase, and the hollow sphere's diameter has a neglectable effect on the enhancement caused by the external stiffeners. Based on the experimental and numerical results, a practical formula for the compressive bearing capacity of large welded hollow spherical joints with both internal and external stiffeners is proposed. The proposed formula gives a conservative prediction on the compressive capacity of large welded hollow spherical joints with both internal and external stiffeners.

• Structural Monitoring and Maintenance
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• v.10 no.2
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• pp.117-132
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• 2023

The most prevalent and oldest type of structure is unreinforced masonry (URM) structures; URM walls are still a widely used construction material in India and many other developing countries due to their simplicity, ease of construction, economic sustainability, and ability to be built with locally available materials. URM walls are significantly weak while carrying lateral loads. The poor performance of URM walls during earthquakes has necessitated investigating an effective method for strengthening a newly built masonry building or retrofitting an old structure. Wire mesh, being cost-effective and easily available, satisfies the requirements to strengthen new and old URM buildings. The use of wire mesh to strengthen and retrofit the URM structure is simple to use, quick to construct, and inexpensive, especially in developing nations where heavy machinery and highly qualified labour are lacking. The current paper reviews the effectiveness of steel wire mesh as a reinforcing material for enhancing masonry strength. The finding gave encouraging results for the field application of wire mesh.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2022.11a
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• pp.107-108
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• 2022

In recent years, the construction industry has a tendency to increase of high-rise builidngs. High rise buildings can use limited space efficiently. But High rise buildings have problem that have extremely heavy weight. Various studies are being conducted to reduce the weight of buildings. Although lightweight aggregate is a meterial that can effectively reduce the weight of buildings, the strength of the aggregate itself is weak and the absorption rate is high, so the strength of the ITZ(Interfacial Transition Zone) area is weak. Therefore, it is essential to improve the interfacial area when using lightweight aggregates. In this study, an experiment was conducted to improve the adhesion between the aggregate and cement paste and to strengthen the interfacial area by coating the surface of the lighteight aggregate with Blast Furnace Slag. To confirm the improvement, compressive strength and EIS(Electrochemical Impedance Spectroscopy) measurements were perfromed. Using EIS, the change in electrical resistance of the cement hardened body was confirmed. As a result, it was confirmed that the lightweight aggregate coated on the surface showed highter compressive strength and electrical resistance than the non-coated lightweight aggregate, and that the coating material was filled in the interfacial area and inside the aggregate that helped to strengthen the compresssive strength and higher electrical resistance.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.46 no.4
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• pp.107-115
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• 2023

Mid-sized manufacturing companies, which account for 0.7%(5,480 companies), 13.8%(1.169 million persons) of total employment, and 15.7% of total sales, have recently experienced a lot of difficulties in management activities due to the impact of COVID-19, the U.S.-China trade war, and the collapse of global supply chains. To overcome this, revitalization of quality management activities to strengthen corporate competitiveness is emerging as an urgent task. In order for these quality management activities to achieve their intended purpose, the positive leadership of corporate managers is very important above all else. There have been many studies related to positive leadership, but most have focused on charismatic leadership and transformational leadership centered on large companies or small and medium-sized enterprises. Therefore, this study aims to present ways to strengthen the leadership of managers by empirically analyzing how the positive leadership of managers of mid-sized manufacturing companies, which was relatively under-researched, affects quality management activities and Business performance(Balanced Score Card; BSC).

• Korea Trade Review
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• v.46 no.4
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• pp.205-217
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• 2021

This paper examines the effects of intellectual property protection policies on upstream firms' R&D investments in order to derive policy implications in relation to the fostering of the intermediate goods industry. To that end, the dependence on import of intermediate goods and the degree of protection of intellectual property rights are introduced into the model to analyze the effects of R&D investments on the dependence on imports and the effects of intellectual property rights protection policies on the level of R&D investments in order and the social welfare effects are also checked. The policy implications derived in this paper, which used an oligopolistic market model with a vertical specialization structure, are as follows. As R&D investments expand, upstream firm begins to have price competitiveness, the dependence on import of intermediate goods by downstream firm decreases, and social welfare increases. That is, in order to strengthen the independence of the intermediate goods industry, R&D investments by upstream firm should be expanded, and to promote this, the government should strengthen the protection of intellectual property rights.

• Journal of East Asia Management
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• v.4 no.2
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• pp.39-62
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• 2023

Online and offline mixed teaching mode has become an important way to promote the connotative development of higher education. Under the background that offline teaching has become mature, in order to further promote the development of online education, and promote the implementation of the mixed teaching mode, to mix and to provide basis for the construction of the mixed teaching mode, this study takes the online learning effect as the evaluation basis, adopts the online questionnaire survey to conduct statistical analysis of the online learning behavior of 2213 college students, and discusses the differentiation phenomenon of online learning groups from the micro, meso and macro perspectives. It is found that there are significant differences in the online learning effect of college students in terms of the type of learning platform, whether the school implements the online offline mixed teaching mode, education background, grade (bachelor's degree), and region. Colleges and universities should strengthen the promotion of online and offline mixed teaching mode; The online learning platform should improve the platform function and strengthen the functional differentiation design of learning resources for students. Education departments pay attention to the learning effect of online learners in different regions, and bridge the gap in regional education.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.7
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• pp.4595-4603
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• 2015

The purpose of this study was to examine the effects of a mentoring program designed to assist nursing students adjust to life in college and strengthen their leadership abilities. The mentoring program consisted of nine sessions including information on basic mentorship functions, as well as the results of similar previous studies. This was a quasi-experimental study with a non-equivalent control group pre-post test design in order to evaluate the results of this program. Mentoring and data collection were performed from March 3 to May 30, 2014. The experimental group participants included 20 mentee students (in grades 1 and 2), and 20 mentors (in grades 3 and 4). Both pre and post tests were administered before and after the mentoring program. The score for "adjust to life in college" was more significantly increased in the mentee student experimental group as compared with the control group. Similarly, the post test score for "leadership" was more significantly increased from the pre test score in the mentor student experimental group. However, no statistically significant differences were found for the post-pre test "leadership" score between the mentor student experimental group and the control group. These results suggested that mentoring had a significant effect on the ability of nursing students to adjust to life in college, as well as to strengthen their leadership abilities, and the program needs more developed contents for leadership.

• 대한공업교육학회지
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• v.36 no.2
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• pp.201-208
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• 2011

The purpose of this study was to develop the workplace etiquette education program for strengthen of employment capability of specialized high school students. Basically the program was developed through three steps of preparation, development and improvement. In the preparation stage, needs of student, teacher, industry was surveyed and the topic of the workplace etiquette education program was selected. In the development stage, set up educational goals of the program and form the program classified into 4 parts: (1) work and etiquette, (2) understanding of organization in the workplace, (3) proper the workplace etiquette, (4) managing oneself. In the improvement stage, verified validity by experts, executed pilot test and field test by students, and corrected the program. The result of the study, the workplace etiquette education program for strengthen of employment capability of specialized high school students has features as fellows: First, the program was designed as a 8 hour, and can be applied flexibly according to situation. Second, the program consist of various cases that occur in the workplace. Third, the program consist of four contents of (1) work and etiquette, (2) understanding of organization in the workplace, (3) proper the workplace etiquette, (4) managing oneself. Fourth, the program basically consist of two parts for students and teacher. Fifth, the program would be used in the subject of 'Career and work' in high school and also applied to the career education such as creative hands-on activities, creative discretion activities, and extracurricular activities.

• Journal of Agricultural Extension & Community Development
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• v.14 no.1
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• pp.29-57
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• 2007

Korea and USA reach an agreement with FTA. Korea's National Assembly will be to ratify the FTA. Korean agriculture was insufficiently competitive. FTA will be inflicted severe losses to Korean agriculture. But taking for granted that neoliberalism and economic globalization as the irrevocable currency of the international economic order, it is time to devote ourselves into discussing appropriate responses policy to minimize domestic agricultural loss and to improve agricultural competitiveness. There will never be another opportunity like this. It's now or never. Korean government and farmer have done various things, but basically their effort have to concentrate on three forms: fill the needs of an old market, create a need and a new export market, and adapt to a new market. This paper was an exploratory study of Korea－USA. FTA and paving the way for further studies on FTA in Korean agriculture. The objectives of this study Korea and USA reach an agreement with FTA. Korea’s National Assembly will be to ratify the FTA. Korean agriculture was insufficiently competitive. FTA will be inflicted severe losses to Korean agriculture. But taking for granted that neoliberalism and economic globalization as the irrevocable currency of the international economic order, it is time to devote ourselves into discussing appropriate responses policy to minimize domestic agricultural loss and to improve agricultural competitiveness. There will never be another opportunity like this. It's now or never. Korean government and farmer have done various things, but basically their effort have to concentrate on three forms: fill the needs of an old market, create a need and a new export market, and adapt to a new market. This paper was an exploratory study of Korea－USA. FTA and paving the way for further studies on FTA in Korean agriculture. The objectives of this study were 1)to explore the agricultural policy of Korean government, 2)and to explore the present condition of Korean agriculture, 3)and looking for responses direction of Korean agricultural policy to FTA, 4)to strengthen the competitiveness of Korean agriculture. Korean government give a subsidy not to strengthen the competitiveness but to soothe the dissatisfaction. It is necessary for Korean government to switch from public money investment to strengthen the competitiveness.