• Fire Science and Engineering
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• v.34 no.2
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• pp.120-130
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• 2020

This study aimed to provide an empirical analysis of the effect of preventive fire administration (PVFA) and prepared fire administration (PPFA) on response fire administration (RPFA) in fire service organizations in Korea. To this end, panel data was collected from 16 metropolitan councils from the period of 2008 to 2018 and statistically analyzed using PVFA, PPFA, and RPFA. The independent variables were PVFA and PPFA, while the dependent variable was RPFA. The analysis of the current situation of the specific target for firefighting (STFF), public use facilities, proof of completion of safety families for public use facilities, and special fire inspection were sub-variables of PVFA. Fire safety education (FSE) and the mobilization for fire suppression (MFS) were sub-variables of PPFA and RPFA, respectively. In the results, STFF and FSE had a significant positive influence on the MFS. This study will contribute to the basic research regarding the investigation of the effectivity of fire service organizations in Korea.

• Journal of Korean Society for Quality Management
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• v.34 no.2
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• pp.22-32
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• 2006

The purpose of this research is to develop the methodology for measuring the effectiveness of the Korean National Quality Award. To test the validity of the model, confirmatory factor analysis is used. Conclusively, 79 questions in 15 sub-categories from 7 categories are developed valid in the empirical research. Seven categories are Leadership, Strategic Planning, Human-Resource Focus, Process Management, Customer & Market Focus, Information & Analysis and Results.

• Journal of Biosystems Engineering
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• v.36 no.6
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• pp.444-452
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• 2011

In this study the characteristics of natural ventilation of Venlo-type greenhouse with continuous roof vents were analyzed using commercial computational fluid dynamics (CFD) code. Developed CFD simulation model was verified by comparison with experimental data. Simulation errors were 1.9-46.0% for air velocity and 1.7-11.2% for air temperature at each measurement point. CFD simulations were conducted to estimate the effect of roof vents opening direction, opening angle, outside wind velocity and wind directions on ventilation rate and climate condition in greenhouse. The results of this study showed that ventilation rate of the present greenhouse was increased linearly in proportion to the increase of roof vent opening angle and outside wind velocity over 2.0 m/s. According to the analysis on the effects of different roof vent opening direction, simultaneous opening of wind and leeward vents showed the highest ventilation rate and lowest mean temperature in greenhouse.

• Korean Journal of Labor Studies
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• v.24 no.2
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• pp.29-59
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• 2018

This paper examines the achievements and limitations of the Moon Jae-In administration's first-year policies on non-standard employment in the public sector of Korea. The most remarkable achievement was that the transition rate of non-standard to standard positions reached the highest historical level of 42.1 percent, mainly by including for the first time temporary agency workers as a target of those policies. There also have been many steps taken to relax the qualification for transition, reduce the number of exception clauses, and expand union participation. In contrast, policy measures to address problems of low wages and inequality were very limited and not significantly different from those of previous administrations. As a result, the success of the policy paradigm shift pursued by Moon's administration will be determined by how aggressive measures are being taken in the next policy steps to improve such problems of low wages and inequality.

• Journal of Preventive Medicine and Public Health
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• v.21 no.1 s.23
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• pp.152-162
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• 1988

Benzene and toluene, which are widely used aromatic hydrocarbons in workplace, are recently proved to cause health hazards due to their toxic effects. This study investigated the influence of toluene on the urinary excretion of benzene metabolite by administering short term exposure limit(STEL) of these compounds(i.e., 13.8mg/kg of benzene and 108.8 mg/kg of toluene) intraperitoneally into Sprague-Dawley rats. After administration, urinary phenol concentration of rat was measured by gas chromatography for every three hours. Data were analyzed by non-parametric statistical methods using Kruskal-Wallis multi-sample test and Mann-Whitney U test. The following results were obtained : 1. Administration of STEL-benzene increased urinary phenol concentration in lats. 2. Urinary phenol concentration was increased logarithmically according to the dosage of benzene. 3. Excretion of phenol in urine was decreased when benzene and toluene were administered simultaneously compared with administering benzene alone. In summary, these results reveal that administration of STEL of toluene has antagonistic effect of urinary excretion of benzene metabolite in rats.

• Proceedings of the PSK Conference
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• 2002.10a
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• pp.401.1-401.1
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• 2002

Potentiometric sensors are important and viable devices for use in pharmaceutical analysis. liquid polymeric membrane electrodes for many basic drugs and a few acidic drug were reported. The acidic drug-metal(Ⅱ)-triethylene tetramine ion pair complexes were prepared and used in poly(vinyl chloride) membrane electrodes to analyze anionic drugs such as mefenamic acid and ibuprofen. Metal ion used were Fe2＋. Co2＋. Ni2＋ and Cu2＋. Plasticizer used was o-nitrophenyl octyl ether.. (omitted)

• Korean Journal of Agricultural Science
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• v.46 no.4
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• pp.971-980
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• 2019

We profiled the health-promoting bioactive components in nine types of soybean seeds with different seed coat colors (yellow, green, brown, and black) and investigated the effects of different extraction solvents (methanol, ethanol, and water) on their antioxidant activities. The carotenoid and anthocyanin compositions varied greatly by seed color, and the phenolic acids, total phenol, and total flavonoid contents differed by genotype. The carotenoid content was relatively higher in soybean seeds with green and black seed coats than in those with a yellow seed coat while lutein was the most plentiful. The anthocyanin content was considerably higher in the soybean seed with the black seed coat. The results of the DPPH assay showed strong antioxidative activities in the methanol- and water-extracts compared to the ethanol-extract, irrespective of the seed coat colors. Moreover, the soybean seeds with the black seed coat exhibited the highest antioxidant activity among the samples, regardless of the extraction solvent used. Eighteen bioactive compounds were subjected to data-mining processes including principal component analysis and hierarchical clustering analysis. Multivariate analyses showed that brown and black seeds were distinct from the yellow and green seeds in terms of the levels of carotenoids and anthocyanins, respectively. These results help our understanding of the compositional differences in the bioactive components among soybean seeds of various colors, providing valuable information for future breeding programs that seek to enhance the levels of compounds with health benefits.

• Environmental Analysis Health and Toxicology
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• v.20 no.4 s.51
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• pp.287-296
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• 2005

아연은 다양한 독성 물질로부터 유도된 아폼토시스를 저해하는 것으로 알려져 있으나 이 기전에 대해서는 명확히 밝혀지지 않았다. 본 연구에서는 인간 유방암 세포 MCF-7에 카드뮴을 처리하였을 때 유도되는 아폼토시스에 대한 아연의 저해효과를 살펴보았다. 아연의 아폼토시스 저해 효과는 DNA분절현상, 핵의 쪼개짐 그리고 caspase-9의 발현을 통하여 확인하였다. 또한 아연의 아폼토시스 저해효과가 카드뮴에 의한 산화적 스트레스와 관련이 있는지 확인하기 위하여 활성산소인 peroxide의 농도를 세포내에서 측정하였다. 나아가 superoxide dismutase (SOD), catalase (CAT) 그리고 glutahion redurtase (CR)같은 활성산소에 대한 인체내 방어기작으로 작용하는 항산화 효소의 활성을 측정하였다. 본 연구를 통해 아연이 카드뮴에 의해 생성된 세포내의 활성산소의 양을 감소시키고 항산화 효소를 회복시키는 기전이 카드뮴에 의한 아폼토시스를 저해하는 한 요인으로 사료되어진다.

• Korean Journal of Oriental Medicine
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• v.11 no.1
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• pp.119-125
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• 2005

We conduct a survey of actual condition of medical devices in korea traditional medicine on 157 oriental medicine doctors and 183 manufacturers. The 61% percent of doctors indicate the trouble in use of medical devices which is applied to korea traditional medicine. The manufacturers replied that devices have a problem with diagnosis(53%) and treatment(36%). To overcome these problems, it is necessary to develop devices based on the study of basic oriental medicine and the reliable clinical research. This study contributes the improvement of quality and the revision of rules on medical devices.

• Health Policy and Management
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• v.22 no.4
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• pp.654-675
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• 2012

This study purports to investigate the relationship between workplace friendship and organizational effectiveness in general hospitals. Organizational effectiveness was represented by the level of job satisfaction, organizational commitment, stress, and intent to leave. Data were collected from 372 workers at 6 hospitals in Chungbuk Province using self-administered questionnaires from May 1 to 20, 2009, and analysed using t-test, ANOVA, correlation analysis and multiple regression analysis. The major findings of the study are as follows: First, friendship level of hospital employees is highest in the friendship with colleague, followed by the friendship with subordinates and with superiors. Second, the group of higher level of workplace friendship showed significantly higher level of organizational effectiveness than the group of lower level of workplace friendship. Third, the level of the workplace friendship with superiors and colleagues was found to have a significant positive impact on the job satisfaction and organizational commitment. The level of the workplace friendship with superior was found to have a significant negative effect on the intent to leave and work stress. These results imply that hospital managers should make an effort to create the organizational climate and systems which improve the workplace friendship.