• Korean Journal of Veterinary Research
• /
• 제16권2호
• /
• pp.165-171
• /
• 1976

Experimental approaches on the effectiveness of thimerosal to control growth of Nosema apis (Zander, 1909) were carried out in the rearing honey bees. The rearing honey bees were artificially infected with various levels of spore isolated from local honey bees. The results obtained were summarized as follows: 1. In the experiments of therapeutic chemicals for Nosema disease, 0.01% and 0.02% thimerosal of sucrose-honey mixture was the most effective agent but the each concentration of amprolium, furazolidone, hygiene, sulfadimethoxine and terramycin did not show the any effects 2. It showed very high therapeutic effectiveness (over than 90%) that the treatment of three times every other day after the treatment of three times consecutive every day with 0.01% thimerosal, or the treatment of three times consecutive every day with 0.02% thimerosal. 3. When 0.02% thimerosal was administered three times consecutive every day to honey bees at the 4th day before artificial inoculation of N. apis, it showed very high degree (100%) of prevalence control effectiveness, and it also showed high degree (over than 90%) in administration at the 7th day before, and over than 80% at the 10th day before. Then authors found that thimerosal has the prevalence control effectiveness as well as the treatment effectiveness. 4. In the rearing honey bee colony, 0.02% thimerosal showed the high degree (over than 80%) of therapeutic effectiveness with the various levels which contained from the light decree of infection to the severe degree of it.

• Journal of Korean society of Dental Hygiene
• /
• 제12권5호
• /
• pp.933-942
• /
• 2012

Objectives : This study is to examine the effectiveness in the oral health promotion through the oral health education for high school students. In adolescence, there seems to be the high incidences of dental caries, gingivitis and periodontal diseases. Concerning preventing all such outbreaks, this study focuses on applying the oral health education to their health education, and on analyzing its effectiveness. Methods : To verify its effectiveness, this research administered 85 students of both genders of a certain high school in Seoul during May-October 2010, followed by the evaluation of DMFT, S-PHP, and CPITN. Results : First, the oral health promotion through the education was statistically significant in the permanent effects of index (FT index). Second, the effect of S-PHP index gradually decreased in statistics from the first to the fifth session, but, after five months ever since the education, it seemed relatively higher in the next sessions. Third, the changing in the level of CPITN decreased continuously as the students received the education repeatedly, but there is no significant difference in statistics for each session. Conclusions : For the oral health promotion in the high school students, the education ought to be focused on the behavior-change objectives rather than on the knowledge-based objectives. The repeated education for tooth-brushing instruction should be stressed for preventing from returning to the old bad behaviors.

• Health Policy and Management
• /
• 제22권4호
• /
• pp.676-695
• /
• 2012

This study purposes to examine the relationship between high performance-HRM system of medical doctor and the effectiveness of hospital. The high performance-HRM practices were derived from reviewing the literature of SHRM(Strategic Human Resource Management) and investigating some cases of Korean leading hospitals. The result reveals that the high performance-HRM system of medical doctor is significantly related with subject measurement such as financial performance, employees' turnover, and customer(patient) satisfaction. Moreover, it is positively related to objective performance such as hospital's profit growth, yearly patient growth. Based on the result, the academic and practical implications are suggested and then the limitation and further research directions are discussed.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
• /
• 제27권10호
• /
• pp.935-940
• /
• 2016

Directed energy weapon enables to radiate the concentrated energy so as to result in distraction and overload of the target electronics. Analysis on effectiveness of weapon system can be important consideration in order to determine performance and design weapon system. In this paper, air defense weapon system, which is one of directed energy weapon system is studied. In order to analyze the effectiveness, the reflector antenna with high power circularly polarized horn antenna is designed, and power density in axial effective area is simulated and calculated using Friis formula. Through the study, the validity of antenna system is verified, and the effectiveness of directed energy weapon system on the target is evaluated.

• The Journal of Fisheries Business Administration
• /
• 제41권1호
• /
• pp.73-91
• /
• 2010

The objective of this study is to examine the hedging effectiveness of shrimp futures market. Hedging effectiveness is measured by OLS model based on rolling windows. Analysis data are obtained from Kansai Commodities Exchange in Osaka and are weekly data of frozen shrimp futures and cash prices in the time period from July 9, 2003, to May 9, 2007. The empirical results are summarized as follows:First, the correlation coefficients between the nearby futures price changes and the cash(16/20) price changes are very low and have range from 0.141 to 0.208 values. Second, the minimum variance hedge ratios($\hat{\beta}$) are all statistically different from 0 at the 5% level and range from 0.0477 to 0.5039 values excluding Indian shrimps(26/30). Ex post hedging effectiveness, as measured by the coefficient of determination, $R^2$, is relatively very low and range from a low of 0.4% for west-south Indian shrimps(26/30) to a high 4.3% for Vietnamese shrimps(16/20). Third, ex ante hedging effectiveness, as measured by out-of-sample hedging period, is also very low and range from a low of -4.4% for west-south Indian shrimps(21/25) to a high of 3.4% for Vietnamese shrimps(16/20). This indicates that the shrimp futures market doesn't behave as risk management instrument of shrimp spot.

• Journal of Korean Academy of Nursing Administration
• /
• 제11권4호
• /
• pp.415-423
• /
• 2005

Purpose: The purpose of this research is to discover the effects of REBT group counseling on the self-efficacy and organizational effectiveness of nurses with high scores on dysfunctional attitude scale. Method: There wewe 21 subjects in the experimental group and 25 subjects in the control group. This treatment lasted for eight weeks. Each week, a two and half hour long session was cinducted. Results: The experimental groups showed that significant statistical differences compared with the control groups in the score of self-efficacy, job-satisfaction, organizational commitment, and nursing performance. Conclusion: These results imply that REBT group counseling could be utilized as good nursing intervention to enhance self-efficacy, organizational effectiveness at the general hospital.

• Proceedings of the Korea Concrete Institute Conference
• /
• 한국콘크리트학회 1989년도 가을 학술발표회 논문집
• /
• pp.63-67
• /
• 1989

Various studies have been done to investigate the effectiveness of lateral confinement of lower strength concrete(below 420kg/$\textrm{cm}^2$). But little research its effectiveness for high strength concrete. A certain concern has been arised that the beneficial effect of lateral confinement in high strength concrete may be different from that in lower strength. This study aimed to investigate that concern with different confinement spacing(D/2 : D/4). The results show that beneficial effects of spiral confinement are more pronounced for lower strength concrete as compared to higher strength concrete.

• Journal of the Korean Solar Energy Society
• /
• 제26권2호
• /
• pp.87-94
• /
• 2006

The efficiency of ventilation system is one of the most important issues of designing ventilation in high-rise apartment buildings. The purpose of this study is to analyze the ventilation efficiency of ventilation system by experimental study using CO2 gas method. The results of this paper can be summarized as follows; (1) An appropriate ventilation including opening planning, mechanical and hybrid system are required. (2) The supply diffuser of ventilation system should be located near the contaminant source. (3) The return grill should be located along with supply diffuser for proper ventilation. and the return grill should be located near or right above the contaminant source. (4) However, the supply location right above the contaminant source has to be avoided. and the supply diffuser should be installed in module with return grill increase ventilation effectiveness.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 한국조명전기설비학회 2009년도 춘계학술대회 논문집
• /
• pp.67-71
• /
• 2009

In this treatise, presented module choice plan that analyze relation with meteorological condition (work trillion amounts, mean air temperature, precipitation, cloudiness, wind speed etc.) because diagnoses June output amount of 247.5kW bulk type module and a-Si type module that is established in equal environment in our country and is the high effectiveness enemy more by climate fluctuation by latest global warming back.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• 제17권9호
• /
• pp.2227-2232
• /
• 2013

To obtain the system requirement specification in the beginning of the precision guidance system development, the effectiveness and reliability analysis for the system are necessary. The main purpose of this research is to obtain the system requirement specification for the high speed unmanned underwater vehicles by carrying out the effectiveness analysis using the modeling and simulation scheme. The effectiveness is position error for target position. Reaching accuracy is expected to be affected by the navigation sensor parameter. Assume that the navigation sensors that is consist of inertial navigation system(INS) and doppler velocity log(DVL) is the parameter. To analyze the effectiveness of each parameter, Monte-Carlo numerical simulation is performed in this research. The effectiveness analysis is carried out using circular error probability(CEP) and variance analyze scheme. Considering the cost function, the specification of the navigation sensor is provided. The cost function is consist of the INS and DVL specification and the price of those sensors.