• The Journal of Korean Medicine
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• v.22 no.1
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• pp.46-52
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• 2001

Objectives: This experimental study was carried out to evaluate the effects of PSM(polysaccharide of mushroom) on the immune activity. Methods: The following were performed; Immunotoxicity testing for immunopathology, IgO production & LPS mitogen response for humoral immunity, DTH, ConA mitogen response for cell-mediated immunity, and macrophage adherence & phagocytosis for nonspecific immunity in vitro or in vivo. Results: PSM showed a protective effect on cyclophosphamide-induced leukopenia, increased IgG production and lymphoproliferative responses to LPS; inhanced DTH and lymphoproliferative response Con A; and activated macrophage adherence and phagocytosis to SRBC. Conclusions: It is suggested that PSM can be used for cancer patients with immunosuppression and adapted to many other diseases.

• Journal of the Korea Safety Management & Science
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• v.19 no.4
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• pp.125-132
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• 2017

The purpose of this study was to assess the correlation between attitude of Patient Safety Management(PSM) and practice of PSM and clinical practice satisfaction of nursing students, also identified how these factors attitude and practice of PSM influence on clinical practice satisfaction, eventually aimed to develop education programs to strengthen practice of PSM in nursing students. A descriptive design was used in the study. The multiple regression was used for the study to prove the factors how the attitude and practice of PSM were affected to the clinical practice satisfaction. The study subjects were 226 nursing students. The results show that attitude of PSM mean was 3.71, practice of PSM mean 3.97, the clinical practice satisfaction mean 3.31. Among the general characteristics, clinical practice satisfaction showed significant differences in satisfaction of major(F=5.10, p=.001), the existence of role model(t=2.64, p=.009). Significant positive correlation was found between attitude of PSM, practice of PSM and the clinical practice satisfaction. Practice of PSM(${\beta}=.39$) was shown as the most important factor to affect on the Satisfaction on clinical practice, also the explanation power of value for this study was found 41.1%. Consequently, this study indicates to develop the education program to strengthen practice of PSM. Also process the additional study for the nursing students in other areas.

• Journal of the Korea Safety Management & Science
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• v.5 no.4
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• pp.21-30
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• 2003

In this paper, we select evaluation criteria by construction progress, classify into several categories, and regard potential danger which often occurs, as a evaluation criterion. Further step is to allow workers or collaborated companies to express their expert opinions or experiences and to encourage quality and process control and autonomous safety control by applying PSM method. The reason why PSM method should be quantitative and substantial progress is because it contributes Korean constructing companies to enhancing their safety control ability and to taking an equal stance just like developed countries,' thereby strengthening there competitive edges. Boost of safety control system by PSM method will make an enormous contribution to preventing construction accidents on the site by establishing and securing an autonomous safety control system.

• Journal of the Korean Institute of Gas
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• v.21 no.4
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• pp.6-15
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• 2017

Process safety management(PSM) system was implemented in Korea since 1996. It helps reduce and prevent the occurrence of chemical accidents. There has been no review on the feasibility of the threshold quantities of the existing 21 species and the newly added toxic substances such as hydrogen bromide in the PSM system. The threshold quantities of the target toxic substances(25 species) of PSM were compared with domestic and foreign PSM systems similar to those of Korea. Also, we proposed the toxic harmfulness and hazard equation consisted of inhalation toxicity, NFPA index and others. According to this equation, high risk, medium risk and low risk are classified and reflected in the adjustment of threshold quantities. From the above research, It is expected to help to reduce confusion and burden of the workplaces due to the difference from other PSM system and improve in the threshold quantities.

• Journal of Digital Convergence
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• v.15 no.9
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• pp.155-165
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• 2017

The purpose of this study is to identify the direct effects of PSM on job satisfaction (JS) and perceived job performance (PJP) in public institutions and to identify indirect effects of the mediator. In particular, we define the person-organization fit (POF) used as the mediator as the fitness of the personnel system and identify the influence of POF in the relationship between PSM, JS, and PJP. The questionnaires used in this study were conducted for the members of Changwon Public Health Center and empirical analysis using structural equation modeling was conducted and the following results were obtained. First, PSM in the integrated public service organization has a positive effect on JS and PJP. Second, PSM shows that JS and PJP of organization members are improved through mediating effect of POF. It can be concluded that PSM can improve JS and PJP through institutional fit between members and organizations.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2023.11a
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• pp.133-134
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• 2023

유해위험한 물질을 다루는 사업장 내에서는 폭발·화재·누출 등의 사고가 발생할 가능성이 상시 존재하므로 사고를 미리 예방하고 위험성을 파악하여 발생할 수 있는 사고를 예방하고 대처하는 안전관리가 필요하다. 우리나라는 1990년대 이후 중대산업사고 예방을 위해 유해 위험방지계획서 시행, 공정 안전관리 제도 시행 등 여러모로 노력해 오고 있으나 최근의 일련의 중대 산업사고는 그 한계를 보여주고 있다. 그래서 본 연구는 PSM 취급사업장의 안전관리 개선을 위한 대책을제시하게 되었고 PSM 취급사업장의 안전관리 개선을 위해 철저한 안전 수칙 준수를 통해 중대 재해 발생을 방지하는 안전관리 개선에 대한 방안을 도출하였다.

• Journal of Convergence for Information Technology
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• v.9 no.12
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• pp.88-97
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• 2019

This study was conducted to identify factors affecting patient safety management (PSM) of nursing student's who have experienced clinical practice. The study subjects were 232 nursing students in five universities in five cities. Data were collected between June 17 and July 30, 2019 using by completing structured self report questionnaires. Data were analyzed using T-test, ANOV A, Pearson's correlation coefficient, and multiple regression using SPSS/WIN 22.0. In correlation ana lysis, significant positive correlations were found between PSM practice, PSM importance awareness (r= .42, p<.001), PSM knowledge(r= .29, p<.001), and PSM attitude(r= .35, p<.001). In multiple regressi on analysis, PSM importance awareness(β=.19, p<.001) was factor predicting PSM practice of nursing students, which explained 36.2% of the variance in the model. Thus, we emphasize that continuing PSM education at the university is required to improve PSM competency.

• Animal Bioscience
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• v.35 no.2
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• pp.236-246
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• 2022

Objective: The objective of this study was to investigate the effect of dietary pumpkin (Cucurbita moschata) seed meal (PSM) on laying hens' performance, quality, fatty acids, cholesterol, antioxidant compounds and shelf life of eggs. Methods: Eighty Tetra SL laying hens, 50-week-old, were randomly divided into two equal groups, having 10 replicates with 4 birds in each. The control (CON) treatment was fed with basal diet, while experimental treatment was fed a diet with 9% PSM, for a 6 week period. Results: Dietary PSM significantly decreased average daily feed intake (p<0.05), with no significant effect on other performance parameters. The PSM, enriched the eggs with polyunsaturated fatty acids, especially α linolenic acid (0.33 vs 0.21 g/100 g) and linoleic acid (20.65 vs 18.37 g/100 g), whereas it reduced the amount of arachidonic acid with 3.91% and n-6/n-3 ratio in PSM eggs compared with CON. The inclusion of 9% PSM significantly (p<0.05) diminished the cholesterol concentration in yolk with 11.31% and in egg with 10.38%, in respect to the CON samples. The significantly (p<0.05) higher concentration of polyphenols and antioxidant compounds, determined in PSM eggs, proved to be effective on shelf life of eggs preserved at refrigerator (5℃) and room temperature (21℃) for 28 days, by delaying the lipid oxidation and protein denaturation. This effect was reflected in significantly (p<0.05) higher Haugh unit in eggs stored 28 days at 21℃ and lower albumen pH values for the overall storage time, both at 5℃ and 21℃, proving the antioxidant effect of pumpkin. Conclusion: Dietary PSM supplementation was significantly effective on average daily feed intake and egg quality by increasing some fatty acids while lowering the cholesterol concentration. Also, PSM proved to be effective improving shelf life of eggs for 28 days storage time.

• ETRI Journal
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• v.41 no.1
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• pp.124-132
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• 2019

The energy balance (EB) model of a primary side regulation (PSR) fly-back converter in the discontinuous conduction mode (DCM) is discussed in this paper. Based on this EB model, the stability of a PSR fly-back converter in the pulse skipping mode (PSM) is analyzed, and a self-adapting modulation factor control strategy is proposed. Theoretical analysis and simulation results show that by saving an optocoupler and correlative circuits, which are necessary in traditional PSM fly-back converters, the modulation factor tolerance controlled by this method is 1.26% on average, corresponding to the ideal value. Compared with traditional fly-back PSM controllers, the power saved in the sampler/comparator modules is 87% on average for a load range of $1{\Omega}$ to $1k{\Omega}$.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38A no.12
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• pp.1045-1053
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• 2013

In this paper, we propose a new power-saving mechanism (PSM) for Long-Term Evolution (LTE) systems by considering a round-trip delay between a user equipment (UE) and its correspondence node. The proposed PSM changes the order of the operational procedures of the legacy LTE PSM by taking the traffic arrival pattern suffering the round-trip delay into account. After modeling the round-trip delay, we numerically analyze the proposed PSM with respect to energy consumption and buffering delay. Then, we characterize these performances by employing a simple energy-delay tradeoff (EDT) curve according to the operational parameters. The resulting EDT curve clearly shows that the proposed PSM outperforms the legacy LTE PSM in terms of both the energy consumption and buffering delay.