• 한국농촌생활과학회지
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• 제9권2호
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• pp.43-50
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• 1998

To obtain basic data for efficient health plan, we investigated the condition of farmers' health, living behavior, working environment, and cumulative fatigue symptoms by crops (greenhouse melon, rice and red pepper, stock farming, pear, grapes, dropwort, sweet potato, potato, radish. cabbage). The results are as follows; (1) The condition of farmers health : Among them, cabbage cultivators were in bad health concerning cardiovascular system, musculo-skeletal system, and skin condition. (2) Living behavior : $\circled1$ Radish cultivators were in best of their physical condition. $\circled2$ Rice and red pepper cultivators were taking a regular recess as compared with dropwort cultivators. $\circled3$ On concerning bathe, sleeping, and clothes, stock farmers were in relatively bad condition. (3) Working environment : cabbage, greenhouse melon, and dropwort cultivators had relatively Poor working environment. (4) Cumulative fatigue symptoms : $\circled1$ Dropwort cultivators were in the worst of their condition concerning loss of their energy, physical condition. decline of will to labor, sense of unease, and low spirits. $\circled2$ On concerning general fatigue, dropwort, sweet potato, and cabbage cultivator were in bad condition.

• 영어어문교육
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• 제5호
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• pp.191-218
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• 1999

The purpose of this study is to investigate the actual conditions of preschool English education, and teachers' and parents' recognition of preschool early English education in Cheonan-city. Recently the importance of English education as an essential means for communication in the whole world is emphasized in our society. That atmosphere makes the elementary schools offer English as a subject in their curriculums, and also many preschool education institutes begin to teach English in their education courses. However before we begin to teach English as a subject in the preschool education, we need to survey the actual conditions of preschools and recognition of teachers and parents. The first part of this study is to survey the theoretical foundations of early English education; 1) the definition of early English education. 2) the situation of early foreign language education in foreign countries. 3) the relationship between the language acquisition and the cognitive development. The second part is to analyze the results of the Questionnaire which was distributed among 86 teachers and 103 parents in Cheonan-city preschools. As a conclusion, some suggestions will be given for the development of early English education in the near future.

• 보건교육건강증진학회지
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• 제5권2호
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• pp.63-89
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• 1988

This paper examines the relationship between working women's health status and working environment. The result of this study is that working women's health is effected on their working environment. The data used in the present study was collected from 7,091 organized women worker by survey conducted in 1987. The independent variables chosen for analysis were job classification, working condition, women workers' characteristics, job satisfaction and health management. The findings of this study can be summarized as follows; First, technical experts had higher health status than other jobs. Manufacturizing workers had lower health status than other jobs. Second, the women who were 20-24 years old, not married and started working at 19 and less year and worked during 3-5 years had lower health status than others. Third, the women who worked bad condition were not healthy. It was bad working condition that working hour was 11-12 per day and did not have holiday and monthly wage was 100,000-200,000 won. Fourth, the women who satisfied the job had higher health status than the women who dissatisfied the job. Fifth, it showed high health status that the women worked the place where health was well managed.

• The Korean Journal of Ecology
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• 제28권3호
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• pp.121-127
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• 2005

To reveal vegetation history and environmental changes in Mt. Jiri, sediment cores were collected from Wangdeungjae moor of Mt. Jiri. Overall dry matter accumulation rates and sedimentation rates by $^{14}C-dating$ were 0.027 $kg{\cdot}m^{-2}{\cdot}yr^{-1}$ and 0.184 mm/yr since 1250 ($760{\pm}40$ yrs BP, 14 cm in depth). There are three pollen zones; the first zone is below 14 cm depth where Quercus dominated, the second zone is from 14 cm to 6 cm depth where Gramineae increased and Quercus and Salix dominated and the third zone is from 6 cm depth to the top where Pinus and Quercus dominated. Total pollen concentration gradually increased from bottom to the top of sediment core, which implies wet, anaerobic and cool condition during covered period by the core. Calcium and magnesium contents had increased since 14 cm depth, with peaks at 13 and 20 cm depths. This indicates that groundwater had recently become relatively more important than surface water as water source of Wangdeungjae moor Exotic plant or Chenopodiacea pollen was less than 1%. There was little variation in total N and P contents along the length of the core. These results support that Wangdeungjae moor has been little affected by anthropogenic activities. Also, nutrients and heavy metal contents indicate the baseline condition of Wangdeungjae moor.

• 반도체디스플레이기술학회지
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• 제19권1호
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• pp.36-41
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• 2020

In this paper, We need to change all print factors when which print scaffold with 400 ㎛ pore using FDM 3d printer. Therefore the print quantity is 10 billion times, So we are difficult to print on workplace. To solve the problem, we used the prediction model based machine learning regression. We preprocessed and learned the securing print condition data, and we produced different kinds of prediction models. We predicted the pore size of scaffolds not securing with new print condition data using prediction models. We have derived the print conditions that satisfy the pore size of 400 ㎛ among the predicted print conditions of pore size. We printed the scaffolds 5 times on the condition. We measured the pore size of the printed scaffold and compared the average pore size with the predicted pore size. We confirmed that error was less than 1%, and we were identify the model with the highest pore size prediction performance of scaffold.

• 한국동물위생학회지
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• 제37권2호
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• pp.105-110
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• 2014

Porcine epidemic diarrhea virus (PEDV) is the causative agent of porcine epidemic diarrhea (PED) and causes a considerable economic loss in swine industry. In this study, the virucidal efficacy of the disinfectant composed to n-alkyl-dimethyl-benzyl-ammonium chloride (n-ADBAC) was investigated against PEDV. A virucidal efficacy was determined with the viability of PEDV contacted with the disinfectant in Vero cells. The disinfectant and PEDV were reacted on the hard water (HW) or organic matter suspension (OM) condition. On HW condition, PEDV was inactivated with 50 fold dilutions of the disinfectant. When the antiviral effect on OM condition was evaluated, the antiviral activity of the disinfectant showed on 10 fold dilutions against PEDV. As the disinfectant possesses the virucidal efficacy against PEDV, the disinfectant solution can be used to limit the spread of animal viral diseases.

• Journal of Communications and Networks
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• 제11권4호
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• pp.375-383
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• 2009

The WiMedia alliance has specified a distributed medium access control (WiMedia MAC) protocol based on ultra wideband (UWB) for high data rate WPANs (HR-WPANs). The merits of WiMedia MAC such as distributed nature and high data rate make it a favorite candidate in HR-WPAN. Although QoS parameters such as the range of service rates are provided to a traffic stream, the WiMedia MAC is not able to use the QoS parameters and to determine or adjust a service rate using the QoS parameters for the traffic stream. In this paper, we propose a fair and adaptive resource allocation method that allocates time slots to isochronous streams according to QoS parameters and the current traffic load condition in a fully distributed manner. Although the traffic load condition changes, each device independently recognizes the changes and calculates fair and maximum allowable service rates for traffic streams. From the numerical and simulation results, it is proved that the proposed method achieves high capacity of traffic streams and fair QoS provisioning under various traffic load condition.

• 대한치매학회지
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• 제16권2호
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• pp.48-53
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• 2017

Background and Purpose Torrance Tests of Creative Thinking (TTCT) is a well-known and commonly used measure of creativity. However, the TTCT-induced creative hemodynamic brain activity is rarely revealed. The purpose of this study is to elucidate the neural correlates of creative thinking in the setting of a modified version of the figural TTCT adapted for an functional magnetic resonance imaging (fMRI) experiment. Methods We designed a blocked fMRI experiment. Twenty-five participants (11 males, 14 females, mean age $19.9{\pm}1.8$) were asked to complete the partially presented line drawing of the figural TTCT (creative drawing imagery; creative). As a control condition, subjects were asked to keep tracking the line on the screen (line tracking; control). Results Compared to the control condition, creative condition revealed greater activation in the distributed and bilateral brain regions including the left anterior cingulate, bilateral frontal, parietal, temporal and occipital regions as shown in the previous creativity studies. Conclusions The present revealed the neural basis underlying the figural TTCT using fMRI, providing an evidence of brain areas encompassing the figural TTCT. Considering the significance of a creativity test for dementia patients, the neural correlates of TTCT elucidated by this study may be valuable to evaluate the brain function of patients in the clinical field.

• 한국학교ㆍ지역보건교육학회지
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• 제19권2호
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• pp.77-86
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• 2018

Objectives: This study aimed identify of the level and effect of the e-health literacy and health behavior in health science majors Methods: The data was collected from March 5 to March 15, 2018 for student majoring in health science at a university in the C city. The data were analyzed with the SPSS 21.0. Results: First, the e-health literacy were statistically significant in grades (F=5.769, p=0.001), health interest (F=10.553, p<0.001) and health care time (F=3.841, p=0.023), and health behavior were statistically significant in subjective health condition (F=5.476, p=0.05), health interest (F=16.716, p<0.001), and health care time (F=28.479, p<0.001). Second, the e-health literacy were correlated with grades, health care time, economic level and health interest, and health behavior were related to health care time, e-health literacy, subjective health condition and health interest. Third, health behavior related factors were health care time, e-health literacy, grades, subjective health condition, and health interest. Conclusion: The related knowledge and skills should be applied to basic classes in order to ensure that health science majors care can accurately utilize the information on the e-health.

• 한국치위생학회지
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• 제9권3호
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• pp.248-261
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• 2009

Objective : This study was performed in order to figure out Oral Health Actual Condition in Elementary School Teachers in Deagu area. This study was conducted from March through May 2008. Method : A total of three hundred and ten Elementary School Teachers were surveyed. The collected data were analyzed by Oral Health Actual Condition and cognition, Diet habit or living and one's own intellect health state, Oral disease sign symptoms of percent and 2-test and One-way ANOVA test by using SPSS12.0 Program. Results : 1. The most of result Frequencies of tooth brushing per one day were 3 over 91.0% and Oral Examination, Oral Health Education need. 2. The result of oral disease sign and symptom were hypersensitivity due to cold food(39.0%), halitosis(21.6%), gingival bleeding tendency(21.3), clicking sound on TMJ(18.7%), hypersensitivity due to tooth burshing(17.1%), easy crown fracture and to be fine(10.0%), pain on TMJ or limitation of mouth opening(7.1%). 3. The most of result age a group oral hygiene assistance article age 20 for interdental tooth brushing(46.4%), age 50 over not used interdental tooth brushing 38.5%. 4. The result of sign and symptom and snack following was statistically significant(P<0.05), health of own cognition and Oral health of own cognition was statistically significant(P<0.001). Conclusion : The study of understanded the Subjective Elementary School Teachers Oral Health Actual Condition and Promotion of Oral Health follow up Oral examination and Oral Health Education have to system groping.