• Journal of Navigation and Port Research
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• v.31 no.1 s.117
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• pp.65-70
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• 2007

The wedge type rail clamp compresses with small clamping force at first, and with large clamping force when the wind speed increases bemuse of the wedge working. At this time in order to display the wedge working, the rail clamp slips along a rail. If the supporter is not installed in the rail clamp when the wind speed increases more and more, the structure will occur overload which leads the structure to fracture. So the supporter has to be installed in the rail clamp. The proper position of this supporter is determined by the initial clamping force and the wege angle. Therefore in this study we adopted 5-kinds of wedge angle as the design parameters, and carried out the finite element analysis, in order to analyze the relationship between the initial clamping force and the position of supporter in the wedge type rail clamp.

• Journal of the Korean association of regional geographers
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• v.10 no.3
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• pp.554-567
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• 2004

Since the 1980s, the academic interests on the regional geography have been renewed. This trend is usually called 'Renaissance' of the regional geography. Given this context, to explore diverse theories and methodologies in the regional geography is of much significance. Particularly, to examine the regional geography in Germany widens the understanding of not only the history, strength, and weakness of the regional geography, but also the discipline's status in the field of geography. This paper discusses the regional geography in Germany before World War II, focusing on varieties of theories and methods as well as the historical trajectory of the German regional geography. This discussion may well be significant in that 'Laenderkunde' became an important paradigm in the discipline of geography in Germany during the pre-World War II period.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.8
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• pp.1998-2004
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• 2009

Recently, due to technical developments of various storage devices and networks, the amount of data increases rapidly. The large volume of data streams poses unique space and time constraints on the data mining process. The continuous characteristic of streaming data necessitates the use of algorithms that require only one scan over the stream for knowledge discovery. Most of the researches based on the support are concerned with the frequent itemsets, but ignore the infrequent itemsets even if it is crucial. In this paper, we propose an efficient method WSFI-Mine(Weighted Support Frequent Itemsets Mine) to mine all frequent itemsets by one scan from the data stream. This method can discover the closed frequent itemsets using DCT(Data Stream Closed Pattern Tree). We compare the performance of our algorithm with DSM-FI and THUI-Mine, under different minimum supports. As results show that WSFI-Mine not only run significant faster, but also consume less memory.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.10
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• pp.5945-5949
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• 2014

The rural population is aging and farmers need to aim for mass production. This study examined the work efficiency of clamping and protecting crops. Strong winds are a risk for damage, but there are no reports of studies of the geometric design problem for vegetation. The accuracy of the simulation to obtain a load applied to the actual support and index was examined. The model was selected according to its strength based on the reliability of the simulation. Also acts in force of 0.1N to 0.6N, which can withstand the force of 1.29N with the results of this thesis research. The fixed clamp fixing for agricultural crops designed as a support was examined. These results are expected to help shorten working hours, and improve the growth of crops and disaster prevention.

• Journal of the Korean Institute of Gas
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• v.18 no.5
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• pp.6-11
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• 2014

To optimize the design of fuel cylinder for LNG vehicles, we introduced the design parameters of the inner and the outer tank of the vessel support structure by analyzing the structural characteristics of conventional design. We selected the inner and outer diameter of the hollow support bars and a dimension of the inner structure of the vessel among the design parameters for design optimization. In this study the temperature distribution and thermal stress of the support structure were evaluated by using the utility program as MSC/MARC. The evaluation criteria are first mode natural frequency, total transferred energy through support structure and thermal stress. The developed design satisfied the design criteria and it was made of prototype. The prototype was verified through three-dimensional vibration testing and thermal performance test.

• Korea Science and Art Forum
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• v.37 no.3
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• pp.213-224
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• 2019

This study was to investigate if there are any segmented groups of residents' attitude toward tourism development and also to examin if there are significant differences among such segmented groups in terms of community spirits and touridms development supports. From the literature review, the survey questionaries was developed and a total of 358 useful sample were collected and analyzed in SPSS. The results from cluster and MANOVA showed that there are some significant differences among the segmented groups. the higher residents have positive attitude toward tourism development the stronger residents have community spirits and tourism development support, More insight implication and discussion was provide in conclusion.

• Journal of the Korean GEO-environmental Society
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• v.20 no.8
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• pp.5-12
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• 2019

A pile group, that consists of several piles connected by a pile cap, is used as the superstructure. The pile supports vertical and horizontal load to design the pile group, but the effect of bearing capacity of the pile cap has not considered. Various researches have been conducted to reflect the effect of bearing capacity of the pile cap in order to reduce the amount of piles in the range of the stability under the vertical load of the superstructure. However, the effect of bearing capacity under the horizontal seismic load has not been studied adequately. Therefore, a shaking table test was carried out with different-sized pile caps that support the superstructure in this study. This test was to verify the influence of the size of the pile cap in the group pile under the horizontal load. The result shows that the size of the pile cap affects to the dynamic behavior of the superstructure and the pile group. Also, the bigger size of the pile group makes the larger constraint effect of ground, and it results that both the ground and the pile moves as a whole.

• Journal of the Korea Convergence Society
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• v.10 no.6
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• pp.381-391
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• 2019

The purpose of this study was to identify factors associated with self-care performance in hemodialysis patients based on the unpleasant symptom theory. Data were collected from 237 patients at five hemodialysis clinics in Seoul from March to April 2018. The results were evaluated by the SPSS/WIN 21.0 program. As a result, Self-care performance was positively correlated with hope, family support and medical support, but negatively correlated with emotional symptom experience and physical symptom experience. In multiple step regression analysis, family support, emotional symptom, and hope were independently associated with self-care performance, and the regression model explained 33.2% of the variances predicting self-care performance. The independent factors associated with self-care performance were family support, emotional symptom, and hope. Therefore, self-care performance may be improved by applying the hope program for the patient and the family.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.2
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• pp.543-551
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• 2019

The purpose of this study was to examine the fitness of a Path model to represent relations between stress, social support, depression, and suicidal ideation in middle-aged males. The participants were 236 middle-aged males, and data were collected from April 11 to June 1, 2018. The analysis was performed using descriptive statistics and Pearson's correlations in PASW Ver. 21.0, and AMOS Ver. 18.0 (a statistical structural equation modeling program), fitness characteristics of the final model were RMSEA 0.05, GFI 0.98, AGFI 0.95, and NFI 0.98. The major study results were as follows. First, stress had a direct effect on depression and drinking, and social support had a direct effect on depression. Second, stress and social support both directly affected suicidal ideation. Results also suggested depression had partial mediating effects on relations between stress, social support, and suicidal ideation. We suggest a program be devised to reduce suicidal ideation by middle-aged males. It is hoped our results will provide basic data for future studies.

• The Journal of the Korea Contents Association
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• v.19 no.6
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• pp.281-291
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• 2019

The objective of the current study is to verify the moderating effect of social support and mediating effect of sense of self-respect in the impact of stress on depression of the elderly. The subjects of the study are 485 people aged 65 or above who use a comprehensive social welfare center. First, in the effect of stress on depression of elderly people, family issues, health issues, economic issues, and feeling of loss were found to be significant. Second, in the impact of self-respect in the elderly on their depression, family issues, economic issues, and feeling of loss were found to have a mediating effect on depression, but not with health issues. Third, in the impact of social support to the elderly on the relationship between their stress and depression, the moderating effect of social support on depression was found to have a negative value. Based on these findings, the study suggests practical implications on social welfare in reducing depression experienced by the elderly.