Targeting dental hygienists who work in clinical division and public dental health division, this study was to investigate and analyze their working environment by work division, so that it could make basic material available in the interest of efficiently employing technical manpower specializing in public health and their better work environment in the future. 1. In terms of the sociodemographic characteristics of respondents, it was found that employees in public health were married in higher percentage and had higher age with longer career than those in clinical division, and it was noted that the former group had higher percentage in longer academic career than the latter group. 2. In terms of working days and hours, it was found that dental hygienists employed in public health worked 5 days a week(95.8%), while those in clinical division worked 6 days a week(70.3%). That is, the latter group worked longer days a week than the former group. 3. In terms of annual regular holidays, it was found that dental hygienists in public health division mostly took 11 to 20 days off a year, while those in clinical division mostly took 1 to 3 days off a year. That is, the former group is significant different in annual holidays from the latter group. 4. In terms of pay and allowances, it was found that most of public health group(89.4%) got monthly pay, while most of clinical group(65.4%) got the pay in annual salary. 5. In terms of reorientation experiences, it was found that 63.5% of total respondents didn't have any opportunity of domestic and overseas reorientation. And in terms of financial sponsorship for reorientation, it was noted that 54.0% of total respondents were financially supported for their reorientation by the institution they work for. 6. In terms of in-house welfare environment for married employees, it was found that 85.5% respondents ever faced no discrimination in job opportunities. In terms of the availability of maternity leave, it was noted that 69.2% respondents used the maternity leave, and 74.8% respondents used the maternity leave during 3 months. 7. In terms of quitting job, it was found that 46.8% respondents had ever left their job(public health group: 53.8%, clinical group: 45.8%), while the remaining 53.2% respondents(public health group: 46.2%, clinical group: 54.2%) had never left their job. Here, it is found that the employees in public health accounted for somewhat higher percentage in quitting job than those in clinical division. In terms of the number of leaving job, it was noted that most(50.8%) respondents left their job once, and there were similar distributions in quitting job between these both groups. In terms of the reason for quitting job, it was found that 29.2% respondents left their job due to desire for better pay(allowance) and working conditions.
The purpose of this study is to find the tracking of blood pressure in primary school-age children. A follow-up study was conducted from 1986 to 1990 on 330 first grade children attending primary schools in Kangwha County, Kyungki-Do. Basically we employed a linear regression model with random coefficients to figure out the relation between blood pressure changes and initial blood pressure. We obtained the following results ; 1. The mean blood pressures were increased grade went up in both sexs and were generally higher in female than male except for the systolic blood pressure at first grade. The size of difference was about 0.8 mmHg in mean systolic blood pressure and 1.5 mmHg in mean diastolic blood pressure. 2. The average annual increasing rates of systolic blood pressure were 2.5 mmHg in male and 3.1 mmHg in female respectively. For the diastolic blood pressure IV the average annual increasing rates were observed to be 3.0 mmHg in male and 2.9 mmHg in female respectively. Increasing rate of systolic blood pressure was significantly higher in female than male. 3. The adjusted regression coefficient of systolic blood pressure change on initial value was -0.11 in male and -0.13 in female and that coefficient of diastolic blood pressure change on initial value was -0.01 in male and -0.11 in female. This result shows that children with higher initial blood pressure do not pick up their blood pressure faster than others with lower initial blood pressure. There is no evidence of tracking of blood pressure in children. It is essential to find the earliest age having the tracking of blood pressure and we leave it for the further study.
Proceeding of Spring/Autumn Annual Conference of KHA
/
2011.04a
/
pp.89-92
/
2011
Built in 1944, in Busan, Sohawjang has currently remained in severe state of transformation. Sohawjang is a rare case of modern housing complex in Korea and it is a significant historic building as housing history and technique history. This study is to leave the basic data about modern housing by finding the substance of Sohawjang, a unusual case of modern housing complex in Korea, and examples of housing transformation through this study. This study attempts to find the original shape and architectural history about Sohawjang, modern apartment building, and analyze the actual conditions of transformation. For implementing, this study carried out the surveys and interviews with experimental research. As the result of the study, after the independence, various cases of transformation were investigated from floor plan of Japanese middle corridor. This study classified according to types of housing by analyzing outcomes and examined the reason and characteristic of transformation. This study discovered the Sohawjang's housing transformation cases, modern housing complex, that has not been disclosed so far and draw the characteristic of transformation as the Architectural Planning.
Proceeding of Spring/Autumn Annual Conference of KHA
/
2009.04a
/
pp.137-142
/
2009
The purpose of this study is to collect baseline data about the demands for housing regeneration of the permanent rental apartment dwellers. Self-administered questionaires and interviews were provided to 144 dwellers in Incheon Man-soo 7 complex from 2008 December 29th to 31st. The collected data was used to conduct comparative and descriptive statistical analysis: frequency, t-test, and $X^2$-test. The main findings are as follows : 1. House repairing and papering is most common used service by respondents. They also have much need for economic support. 2. Residents were satisfied with general environment of house. This survey showes that the highest satisfaction was about using food waste disposal sites. and the lowest satisfaction was about soundproof facilities on the other hand, among the questions. 3. Dwellers wanted to remodeling such as bathroom, restroom, a flower garden, space of landscape architecture. More than half dwellers preferred to leave among themselves living at permanent rental apartment as it is. 4. There is important difference in the demands of housing regeneration as the family trait. and variables of those were nuclear family or elderly/handicapped-family.
Proceedings of the Korea Water Resources Association Conference
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2020.06a
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pp.170-170
/
2020
Due to the development of technologies, complex computation of huge data set is possible with a prevalent personal computer. Therefore, machine learning methods have been widely applied in the hydrologic field such as regression-based regional frequency analysis (RFA). The main purpose of this study is to compare two frameworks of RFA based on the artificial neural network (ANN) models: quantile regression technique (QRT-ANN) and parameter regression technique (PRT-ANN). As an output layer of the ANN model, the QRT-ANN predicts quantiles for various return periods whereas the PRT-ANN provides prediction of three parameters for the generalized extreme value distribution. Rainfall gauging sites where record length is more than 20 years were selected and their annual maximum rainfalls and various hydro-meteorological variables were used as an input layer of the ANN model. While employing the ANN model, 70% and 30% of gauging sites were used as training set and testing set, respectively. For each technique, ANN model structure such as number of hidden layers and nodes was determined by a leave-one-out validation with calculating root mean square error (RMSE). To assess the performances of two frameworks, RMSEs of quantile predicted by the QRT-ANN are compared to those of the PRT-ANN.
To investigate the effect of isoproturon (N,N-dimethyl-N-4-isopropyl phenyl urea) on weed-killing, crop injury and yield of barley, several experiments were conducted by application time, dosage, cultivars and soil texture. For the effective control of weeds the optimum application time was foliage application after winter. Alopecurus aequalis SOBOL was effectively controlled when isoproturon should be applied at three to four leaf-stage and most annual broad-leave weeds emerged through winter and spring could be controlled when applied even at five to six leaf-stage. But among the broad-leave weeds Vicia amoena Fisch. was resistant to isoproturn. The optimum application rate of isoproturon was 240g-300g/10a (prod.). Among 11 cultivars of barley and wheat, phytotoxicity of Olmil, Jokwang and Rye was slighter than that of the other cultivars when isoproturon was treated by foliage application after winter. At the time of foliage application after winter, the variation of phytotoxicity and effectiveness was a little despite the difference of soil texture and the grain yield of barley was higher in the plots treated 240-300g/10a than in other treated plots.
This study examined how firms responded to the articles regarding the prohibition or correction of discrimination against fixed-term workers in the 'fixed-term worker protection law', which has been effective since July of 2007 in Korea. Data used cone from the Korean Workplace Survey, and a difference-in-differences method was employed for the identification of the causal effect, noting that the 'discrimination prohibition law' has been applied to firms over stages based on their sizes. The empirical results show no strong evidence that the law played a positive role in reducing differentials between permanent workers and fixed-term workers in the areas of wage and various employee benefits, including the provision of severance pay, annual leave, and 4 major social insurances for fixed-term workers. A more thorough future analysis on the causes of the insignificant impact of the law in some employee welfare benefits, along with supplemental policies, is needed to have the law achieve the desired goal of removing discrimination at the workplace.
This study focuses on resolving traffic congestion caused by a large scale event based on the case of ROK Joint Officer Commissioning Ceremony, and it was conducted through literature review as well as Arena Simulation. The study purpose is to appropriately allocate and disperse the traffic by utilizing nearby parking lots of facilities. The annual event draws about 7,400 vehicles to a limited number of parking lots, and all vehicles leave the parking lots concurrently, causing a severe bottleneck near the exit and a few roads. In order to resolve the issue, the optimal number of cars in the event area was analyzed. After the analysis, the study found that the overflow of cars in the event area should be allocated to nearby parking lots of facilities with shuttle buses operating to transport the attendees. As the proposed result of the simulation, the traffic congestion time was reduced from 150 minutes to 64 minutes, a total reduction of 86 minutes.
Journal of the Korea Institute of Building Construction
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v.22
no.3
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pp.293-303
/
2022
In construction work, it can be difficult to know the exact number of full-time workers, so the accident rate is calculated using the approximate number of full-time workers. In addition, as the accident rate calculation is performed based on the assumption that the number of accidents is proportional to the approximate number of workers, the reliability of the calculation result may be questionable. This study proposed a new indicator for accident level based on the progress payment and the number of injuries. The accident-progress ratio, which can be calculated by simply dividing the number of injuries by progress payment, can replace the existing accident rate index or be used as an auxiliary indicator of the accident level. The correlation coefficient between the number of injuries and the progress payment was higher than that between the number of injuries and the number of construction workers. In addition, over the past 10 years, the accident rate has been increasing, whereas the accident-progress ratio has showed a decreasing tendency. This might leave room for different interpretations of the annual variation in the accident level in the construction industry.
We analyzed efficiency and productivity of the Indian non-life insurance market affected by the COVID-19 pandemic from 2020. Using data envelopment analysis(DEA), we examined non-life insurance companies selling health insurance products in India from FY2013 to FY2019. We found the followings. First, average efficiency of the entire non-life insurance industry worsened in the beginning yet improved later. Second, analyzing the efficiency measures by group, we found that private insurance companies had the highest efficiency, followed by state-run insurance companies and pure health insurance companies. Third, average annual productivity growth rate of companies operating distance selling channels including telemarketing is higher than that of traditional face-to-face channels. During and after the COVID-19 pandemic, therefore, Indian non-life insurance companies should focus their resources and efforts on the development of distance selling channels when establishing business strategies. Besides, it would be interesting to extend our analysis to the post-coronavirus period and we leave this for future research.
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