• Fourth Industrial Review
• /
• v.1 no.2
• /
• pp.1-8
• /
• 2021

Purpose - By suggesting relational distance between supervisor and subordinate, this study examines the boundary condition of the impact of transformational leadership and organizational commitment in Korea. Research design, data, and methodology - We collected survey data from employees in various industries in Korea. A total of 241 employees participated in this study. We conducted the hierarchical linear regression and confirmed moderating effects of relational distances (democratic, structural and affective distance) on the relationship between transformational leadership and organizational commitment. Result - The results from 241 Korean employees show that transformational leadership is positively related to organizational commitment. Further, this relationship was moderated by structural distance and affective distance between supervisor and subordinate. Conclusion - This study shed new light on how exercising transformational leadership can help raise employees' organizational commitment. Organizations should be concerned about the various relational distance between supervisor and subordinate.

• Journal of Multimedia Information System
• /
• v.7 no.3
• /
• pp.205-214
• /
• 2020

Crime has become one of the major problems in modern society. Even though visual surveillances through closed-circuit television (CCTV) is extensively used for solving crime, the number of crimes has not decreased. This is because there is insufficient workforce for performing 24-hour surveillance. In addition, CCTV surveillance by humans is not efficient for detecting dangerous situations owing to accuracy issues. In this paper, we propose the autonomous detection of dangerous situations in CCTV scenes using a deep learning model with relational inference. The main feature of the proposed method is that it can simultaneously perform object detection and relational inference to determine the danger of the situations captured by CCTV. This enables us to efficiently classify dangerous situations by inferring the relationship between detected objects (i.e., distance and position). Experimental results demonstrate that the proposed method outperforms existing methods in terms of the accuracy of image classification and the false alarm rate even when object detection accuracy is low.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2004.08a
• /
• pp.139-145
• /
• 2004

It is well known that human errors is involved in most of maritime accidents. For the purpose of reducing the influence of human elements on maritime activities, it is necessary to identify the human unsafe acts in those activities. The commonly used methods in identification of human unsafe acts are maritime accident statistics or case analysis. With the statistics data, people could roughly identify what kinds of unsafe acts or human errors have played active role in the accident, however, they often neglected some active unsafe acts while overestimated some mini-unsafe acts because of the inherent shortcoming of the methods. There should be some more accurate approaches for human error identification in maritime accidents. In this paper, the application of technique called grey relational analysis (GRA) into the identification of human unsafe acts is presented. GRA is used to examine the extent of connections between two digits by applying the, methodology of departing and scattering measurement to actual distance measurement. Based on the statistics data of maritime accidents occurred in Chinese waters in last 10years, the relationship between the happening times of maritime accidents and that of unsafe acts are established with GRA. In accordance with the value of grey relational grade, the identified main human unsafe acts involved in maritime accidents are ranked in following orders: improper lookout, improper use of radar and equivalent equipment, error of judgment, act not in time, improper communication, improper shiphandling, use of unsafe speed, violating the rule and ignorance of good seamanship. The result shows that GRA is an effective and practical technique in improving the accuracy of human unsafe acts identification.

• Journal of Korea Water Resources Association
• /
• v.45 no.12
• /
• pp.1243-1258
• /
• 2012

The objective of this study is to develop the relational formula to estimate the streamflow depletion due to groundwater pumping near stream, which has been statistically derived by using the simulated data. The integrated surface water and groundwater model, SWAT-MODFLOW was applied to the Sinduncheon and Juksancheon watersheds to obtain the streamflow depletion data under various pumping conditions. Through the multiple regression analyses for the simulated streamflow depletion data, the relational formula between the streamflow depletion rate and various factors such as pumping rate, distance between well and stream, hydraulic properties in/near stream, amount of rainfall was obtained. The derived relational formula is easy to apply for assessing the effects of groundwater pumping on near stream, and is expected to be a tool for estimate the streamflow contribution to the pumped water.

• Korean Parent-Child Health Journal
• /
• v.1
• /
• pp.115-126
• /
• 1998

It is the base of the health through life, the health of children is very important. The health education is the most effective measure for disease prevention and health promotion. To educate children for the health, we must consider their concept of the health before. Therefore I attempted this study for investigation for the concept about respiratory communicable disease which is one of the most important health problems. The design of this study was descriptive investigational study. The subjects of this study are 4-6 aged 65 children who are attending district nursery school. The tools of this study constituted 3 parts as an etiological agents, environmental agents and host agents. The data were collected by an individual interview and cartoon cards. The results of this study are as followed: 1. The preschool children tend to think contamination along the physical distance, nearer things more relational. 2. The preschool children tend to have their experience centered thinking. 3. There was a highly significant correlation between the children's age and knowledge scores(r = 0.431, P= 0.0003). 4. There wasn't a significant correaltion between sex group. In conclusion, it wad founded that the preschool have a tendancy to think communicable disease along the physical distance and their daily life experiences. This results support the Piaget's cognitive developmental theory. Therefore, to develop the health education program for preschool students, above results must be referenced.

• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.65 no.6
• /
• pp.1001-1006
• /
• 2016

As consumption of energy is increasing rapidly, energy saving is emphasized in nowadays. Thermal power plant occupies a large proportion in various type of power plant. Major causes of decreased power generation efficiency on thermal power stations is deposition of fly ash. Soot Blower is a facility to remove the ash which is deposited outside of tube by steam blowing on boiler. Residual stream which caused by lance tube in soot blower cannot be discharged steam effectively in lance tube causes reducing the thickness of lance tube. On the contrary, increasing discharge ratio of steam, lance tube cannot sustain proper pressure to remove ash on tube. This study suggests increasing discharge ratio of steam with proper pressure to remove ash on tube by optimization on shape of lance tube nozzle. To optimize shape of nozzle, discharge ratio and maximum blowing pressure on nozzle is selected as object functions. Diameter of nozzle, distance between nozzles, angle of nozzle and gap between nozzle is selected as design parameters. Then the design of experiment (DOE) with an orthogonal array is performed to analyze the effect of design parameters. And grey relational analysis and analysis of mean (ANOM) is performed to optimize shape of lance tube.

• Journal of the Korean association of regional geographers
• /
• v.22 no.4
• /
• pp.912-930
• /
• 2016

This paper suggests to bring the idea of social construction of nature or social nature discussed in social science including geography to geographical and environmental education for breaking traditional divide of people(or society) and nature. And this paper analyzed relationship between people and nature, meaning of environment and the concepts of social nature represented in the geography curriculum and textbook of England, Australia and Korea. Recently in terms of focusing disciplines or education on integration or convergence, introduction of social nature in teaching and learning geography and environment has an important implication. With rapid growth of capitalism, nature is constructed socially by the political, economical, social and cultural practice. Thus geography education reduces the distance between human geography and physical geography and needs to focus on exploring not just the relationship between people and nature but social construction of nature. Another implication of the introduction of social nature in teaching and learning geography and environment is that students can develop the relational sensitivity about the relationship people and nature or people and place.

• Journal of The Korean Association For Science Education
• /
• v.41 no.5
• /
• pp.415-428
• /
• 2021

The COVID-19 pandemic has changed everything, even education. Last year when distance learning was introduced, science teachers faced many challenges to overcome. However, teachers adapted quickly, and in this year, it became the 'new normal'. In this situation, teachers are likely to habitually repeat past practices, but the context of the second year of distance learning is changing constantly, and teachers are asked to interpret the problem occurring in a situation and to adjust their practice for solving the problem with their teacher agency. In this study, we explore the emergence of science teacher agency and factors shaping teacher agency in the second year of distance learning and we focus on teachers' agentic practice that did not follow their past practice without reflection. For this purpose, we mainly analyze the semi-constructed interview of three science teachers. In the first year of distance learning, two teachers maintained their practice, not much different to face-to-face learning. However, one teacher reflected upon herself and started to recognize and solve her problems. Reflection for her practice can support this process. Another teacher changed her practice due to external suggestions, but it evolved her practice to fit the situation better, and her experience of last year helped her to adapt to the change. The other teacher who modified her practice to persist her professional purpose last year was consistently practicing in the second year and collaboration and autonomy can support her. This study shows the teachers' dynamic change of agency and the emergence for the relational interaction between teacher and context.

• Journal of the Korea Society of Computer and Information
• /
• v.16 no.11
• /
• pp.103-111
• /
• 2011

In this paper, we propose a Geometrical Centroid Contour Distance(GCCD) which is described by shape signature based on contour sequence. The proposed method uses geomertrical relation features instead of the absolute angle based features after it was normalized and aligned with dominant feature of the shape. Experimental result with MPEG-7 CE-Shape-1 Data Set reveals that our method has low time/spatial complexity and scale/rotation robustness than the other methods, showing that the precision of our method is more accurate than the conventional desctiptors. However, performance of the GCCD is limited with concave and complex shaped objects.

• Journal of the Ergonomics Society of Korea
• /
• v.17 no.1
• /
• pp.47-54
• /
• 1998

Product design and development is very important process in enterprise activities. Reducing development time and reflecting consumer's needs is required to product design and development for increasing benefit and decreasing cost. Human sensibility ergonomics is one of the important technology of R&D in product development. However, the subjective method of human sensibility ergonomics has several problems to analyze and to Quantify experimental data and objective method of human sensibility ergonomics is still in process on study. In this research, new analyzing method is proposed for the subjective human sensibility ergonomics applied with fuzzy set theory. What is the useful theory for controlling uncertain type of information like human mind? This approach is more effective method for analyzing consumer's needs for product design and development process. At collecting needs, certainty scale is added for adapting hedge of fuzzy function. Using a kind of union operator, synthesize each item to analyze identification of each item with fuzzy hamming distance. Identification of analysis is classified with the relational weight using Relationship Chart Method, and is drawn the relationship diagram for clustering each item. A case study with sample test is conducted and demonstrated with this suggested method for more effective way.