• YAKHAK HOEJI
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• v.45 no.6
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• pp.617-622
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• 2001

A protein-polysaccharide fraction of a Korean wild mushroom Psathyrella velutina, PVP, was prepared and its antitumor immunomodulatory activity was investigated. When PVP was administered once daily for seven days from day 1 to day 7 into male ICR mice implanted with 1 $\times$ 10$^{5}$ cells of sarcom 180 tumor cells into the peritoneum on day 4, it inhibited the growth of sarcoma 180 cells by 92.8%. In XTT assay, PVP also exhorted in vitro anti-proliferation activity on U-937, a human monoblastoid cell line, as well as sarcoma 180 cells. PVP showed marked stimulatory activity on the immune system in that it induced the accumulation of PEC (the stimulation index, Sl=4.90 at 100 mg/kg), stimulated the BALB/c mouse splenic lymphocytes to form lymphoblasts (Sl=5.75 at 100$\mu\textrm{g}$/ml), and upergulated the expression of CD25 molecules. All these results strongly support that PVP exhorts its antitumor activity through stimulation of the immune system as well as anti-proliferative activity on the tumor cells.

• Journal of Navigation and Port Research
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• v.29 no.4
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• pp.305-312
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• 2005

Pick-up/delivery of consumer goods to offices, shops, and restaurants in order to support urban lives is one of the most vital activities in a city. With economic growth and technological innovation, a greater variety of goods have come to be supplied, and pick-up/delivery of consumer goods has become more complex. Efficient urban goods movement in Central Business District(CBD} starts with an efficient system for loading/unloading, and pick-up/delivery activities. Loading/unloading activity may be carried out on-street, or on especially designated space inside or outside buildings. Therefore, purpose of this study is to clarity the efficient urban goods movement in CBD(also called the pick-up/delivery activity) from the three different types of loading/unloading facilities. For this purpose, the differences in loading/unloading and truck-trip activity time of each loading/unloading facility was compared by performing the simulation analysis.

• International Journal of Railway
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• v.3 no.1
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• pp.28-33
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• 2010

The research is to develop cost methodology to support railway managers for identifying principles, tools and methods of activity based management correctly and precisely, and can be useful and effective for managers for realizing their goals. The research result a ministry can be suitable guideline in terms of how to execute activity based management. Since in this research, main and secondary activities are studied completely in the Railway organization, it can be an explanatory research. The research population is headquarter managers and experts of railway organization and the sampling procedure is goal-oriented and judgmental. 74 people were selected by using a formula. All hypotheses were tested in 95% significance level. Meanwhile a proposed process of applying. activity based management was offered.

• The Journal of Fisheries Business Administration
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• v.50 no.3
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• pp.43-57
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• 2019

Recreation specialization and consumptive orientation are two important constructs to understand anglers' attitudes and behaviors. Although theoretical explanations and previous studies in different countries addressed the relationships between the two constructs, limited support has been provided in a context of anglers in Korea. This study developed a conceptual model explaining the causal relationships between recreation specialization, anglers' preferences (activity-specific and activity-general) and consumptive orientation. An on-site survey was conducted to anglers in the city of Busan and Gyeongnam province in 2018. A total of 614 data were analyzed using Structural Equation Modeling The study results showed that recreation specialization positively and indirectly influenced consumptive orientation via anglers' activity-specific and activity-general preferences. Theoretical and practical implications are further discussed.

• Journal of Digital Convergence
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• v.11 no.12
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• pp.811-820
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• 2013

This study aimed at analyzing the effects of economic and leisure activities and social supports on the life satisfaction level of the olders who live in the Seoul city and surroundings and finding out the differences in the variables such as the economic and leisure activities, social support and life satisfaction level according to the demographics variables of the older. And the results are as follows. First, the education level, the status of living with spouse, status of economic and health conditions have positive influences of life satisfaction lever of the older. But the participation duration and frequencies of the economic and leisure activities do not affect on the life satisfaction level of the older. Second, the social support has an influence on the life satisfaction level of the older. Third, the differences in the variables such as social participation social support and life satisfaction lever of the older according to the demographic variables were found out partially.

• 대한공업교육학회지
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• v.34 no.2
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• pp.304-320
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• 2009

This study was performed to grasp relations between different sub-factors of youths' leadership living skills and between the sub-factors of youths' leadership living skills and personal features (support by parents, support by peers, sense of self-respect, sense of self-effectiveness) in order to generally understand the characteristics of youths. The result and conclusion of this study are as follows. First, the sub-factors of youths' leadership living skills showed various kinds of correlations and especially, measures to improve learning ability skill, self-understanding skill and group activity skill are necessary for healthy and general growth in adolescence. Second, the sense of self-respect showed positive correlations with decision making skill and self-understanding skill and programs are to improve leadership living skill gradually and positively through the enhancement of the sense of self-respect. Third, the degree of support by peers showed relations with decision making skill and group activity skill meaning the importance of peer groups in adolescence and diverse measures to form peer groups are necessary.

• Journal of Fashion Business
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• v.21 no.4
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• pp.105-115
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• 2017

Continuous lifting and carrying of babies constitutes a serious physical burden, leading to issues such as muscle fatigue and pain in child-care workers. However, there is a lack of research on the pressure and subjective comfort of baby carriers that are commercially available in the market. Therefore, this study was intended to determine the most comfortable and least burdensome type of baby carrier. This was done by analyzing muscle activity and pressure when subjects carried babies using three types of baby carriers. The types of baby carriers evaluated included a 'baby carrier of thin shoulder straps without back support band (X-type)', a 'baby carrier with a back-support band and without a hip sheet (H-type)', and a 'baby carrier with back support band and hip support (H-hip type). The subjective comfort of subjects wearing each type of baby carrier was investigated and compared to the objectively measured data. As a result, the X-type baby carrier showed the heaviest pressure on the shoulders and the subjective comfort was found to not be good. On the waist region, the H-type and H-hip type baby carriers showed significantly less muscle activation than the X-type baby carrier. However, subjects showed a stronger preference for the X-type baby carrier on the waist region, despite greater muscle activation. This appears to be because although the back-support band disperses the weight and thus improves physiological comfort; the wearers feel cramped and thus, lower their psychological comfort.

• The Journal of Fisheries Business Administration
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• v.48 no.2
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• pp.67-82
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• 2017

The study intends to examine the effects of the fishing license system on fisheries resources in order to reduce the adverse effects of recreational fishing, such as fishery resource reduction and environmental pollution. In doing so, the research question of the study is to determine what factors influence anglers' willingness to support fishing licenses. Based on the extended theory of planned behavior, we further included explanatory variables such as recreation specialization and motivations besides anglers' attitudes, norms and self-efficacy towards the environment and proposed six research hypotheses. The data were collected through on-site and online surveys in Gwangju and Cheonnam province and a total of 337 effective questionnaires were collected for data analysis. Three different binary logit models were employed with the dependent variable of anglers'willingness to support fishing licenses to assess the effects of explanatory variables. Study results show that social norms, the level of recreation specialization, motivation factors related to environmental experiences positively affected anglers'willingness to support fishing licenses. However, anglers'consumptive orientation attitudes such as catching big fish, motivation factors related to activity general experience preferences and previous fishing experience had negative effects on the dependent variables. Study results indicate that public outreach and education programs are essential to successfully introduce the fishing license system. Managerial and policy-related implications are further discussed to make recreational fishing a more environment-friendly recreational activity. This study investigated the effects of diverse variables derived from anglers' social-psychological characteristics on their support for fishing licenses and suggest diverse policy-related and managerial implications.

• Korean Journal of Adult Nursing
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• v.22 no.6
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• pp.561-569
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• 2010

Purpose: The purpose of this study was to identify the factors related to depression of elderly patients in geriatric hospitals. Methods: The subjects were 195 elderly patients who met the inclusion criteria of scores more than 18 on the K-MMSE score and no reported mental disease. The data were collected from February 20 to March 20, 2009. The research instruments utilized in this study were depression (GDSSF-K), activities of daily living and self esteem (RSES), social support, life satisfaction. Data were analyzed Pearson correlation and Multiple Stepwise Regression using SPSS 15.0. Results: Depression score were negatively correlation with ADL, social support, life satisfaction and self-esteem. Among the factors studied related to depression, life satisfaction had highest explanatory power of 36.5% and it was followed by physical health status and activity of daily living. These explained 43.7% of the depression. Conclusion: The mean GDSSF-K 8.94, which indicates the higher than middle levels of depression. The findings suggest that it is important to develop educational programs to increase life satisfaction, physical health status and activity of daily living. Nursing interventions, including volunteer activities, health promotion program, and sports program could be useful in enhancing these factors.

• Proceedings of the Korean Vacuum Society Conference
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• 2013.02a
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• pp.166-166
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• 2013

Mesoporous $SiO_2$-supported Ni catalysts (Ni/$SiO_2$ and Ni/$TiO_2$/$SiO_2$) were fabricated by atomic layer deposition (ALD), and their catalytic activity and stability were investigated in carbon dioxide reforming of methane (CRM) reaction at $800^{\circ}C$ The Ni/$SiO_2$ catalysts showed high stability as a result of confinement of Ni particles with a mean size of ~10 nm within the pores of $SiO_2$ support. Besides, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and transmission electron microscopy (TEM) results showed that the Ni nanoparticles were partially buried inside the $SiO_2$ support. The strong interaction between Ni and the $SiO_2$ support could also be advantageous for long-term stability of the catalyst. In case of the Ni/$TiO_2$/$SiO_2$ catalyst, it was found that the catalytic activity of 10 nm-sized Ni nanoparticles was not much influenced by $TiO_2$ addition.