• Journal of Urban Science
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• v.8 no.2
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• pp.41-45
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• 2019

The treatment method of leachate was increasing with the progress of science and technology, the management system was more perfect. The paper gathered so far the leachate treatment technology, including physical, chemical and biological treatment technology, and found the technology to be improved, the paper expounds the advantages and disadvantages of each method, applicable scope in the future, leachate treatment technology.

• PNF and Movement
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• v.11 no.1
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• pp.69-78
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• 2013

Purpose : This study was to investigate the satisfaction of clinical practice according to medical institute. Methods : A survey was administered for 70 college students with experience in clinical practices. We investigated using a questionnaire on 'curriculum factors on practice', 'environmental factors on practice', 'time-schedule factors on practice', 'teaching factors on practice'. A statistical analysis was performed using SPSS 17.0 for window version. Results : 1. The degree of satisfaction on curriculum of clinical practice was higher college hospital than other hospital in 3 among 5 items(p<.05). 2. The degree of satisfaction on environmental factors of clinical practice was higher school hospital than other hospital in 4 among 6 items(p<.05). 3. The degree of satisfaction on time-schedule factors of clinical practice was higher college hospital than other hospital in 1 among 5 items(p<.05). 4. The degree of satisfaction on teaching factors of clinical practice was higher college hospital than other hospital in 4 among 6 items(p<.05). Conclusion : It was revealed by this survey that the satisfaction of clinical practice in school hospital had higher other hospital in curriculum, environment and teaching factors. To maximize the effects of clinical practice, a clinical practice program in school hospital is required and further research and attention are suggested.

• Korean Journal of Agricultural Science
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• v.38 no.1
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• pp.109-113
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• 2011

The purpose of this study was to examine the potentiality of urban forest roads as an environment for enhancing physical fitness. Six male university students participated in the study as subjects. The subjects walked on an urban forest road for 30 minutes. As a control experiment, they also walked on a national park trail for 30 minutes. Subjects' heart rates were monitored during the walks to calculate the ratio of the average time their heart rates were within the target range (from 60% to 80% of the maximal heart rate) for Enhancing Physical Fitness. After the walks, images of the spaces were analyzed using the semantic differential (SD) method. During the walk on the urban forest road, subjects' heart rates were within the target range 63.3% of the time, and lower than the target range 36.7% of the time. During the control experiment on the national park trail, subjects' heart rates were within the target range only 23.3% of the time, and higher than the target range 76.7% of the time. From the spatial perception evaluation using the SD method, subjects' comfortable and natural feelings when they were on the national park trail were significantly greater than when they were on the urban forest trail, but there were no differences in terms of other SD descriptors, such as friendliness and likeability. The results of our study indicate that the urban forest road provides a good environment for walking to enhance physical fitness. Although not as close to nature as national park trails, urban forest roads offer similar natural environments and have a high potentiality for serving as leisure spaces for urban residents who seek physical activities.

• Journal of the Korean Institute of Educational Facilities
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• v.22 no.6
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• pp.23-34
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• 2015

The object of this study is to show the international safety school operating characteristics certified by Community Safety Promotion Cooperation Center affiliated to the WHO to strengthen safety training course and create safe training environment in accordance with the importance of recently the safety education for students and safe environment in the school education course. It draw the kind of education program to prevent accidents in the elementary and middle school students because of analyzing student safety education program. It also suggest operation characteristics which were divided into physical environment and crime prevention environment.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2001.04b
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• pp.41-42
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• 2001

The objectives of this study were to investigate the effect of the physical properties of wick on the water absorption of substrate. Physical properties of wick in this study were cotton composition, width and length. The water Infiltration rate through the wick was 0.24 ㎝/s at 90 -95% cotton content, which was faster than at 80-85% (0.13 cm/s) and 70-75% (0.08 cm/s). As the cotton content increased, the water absorption of substrate became greater : the amount of absorbed water was about 5-7g higher at 90-95% than at 80-85% and 70-75% at a wick width of 1 ㎝, the velocity of water absorption through the wick was fastest with 0.25 ㎝ㆍs/sup -1/. The amount of absorbed water was higher at 3 ㎝ than at 1 and 2 ㎝. However, the water absorption rate through the cross - sectional area of wick (g H₂O /㎠/hr) was higher at a wick width of 2 ㎝ than at those of 1 and 3 ㎝. The amount of absorbed water in the substrate was higher at 2 : 1 than at 1 : 1 (length in substrate : length out of substrate). Absorbed water amount was larger at 30-40% initial moisture content than any other treatment.

• Proceedings of the Korean Society for Environmental Edudation Conference
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• 2005.12a
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• pp.138-147
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• 2005

In the present study, the middle school students' perception on the environment course was surveyed before and after three different lessons. It was found that most students were taking environment related issues mainly from mass media including internet and broadcasting. The young students were satisfied at practical experiments, but at the same time a few old fashioned experimental programs would not be preferred. Utilization of multimedia such as audio-visual tools was one of the effective tools for the environment class, because it could help to understand even the profound principles of the chemical and physical processes. However, some students did not concentrate on the display, causing frequent disturbance of the class. Since the school for this investigation did not choose the environment as a selective course, practical tools and materials for the experiment should not be sufficient, and thereby a further detailed work must be followed with the students who are taking environment lessons.

• Journal of Technologic Dentistry
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• v.33 no.4
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• pp.453-466
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• 2011

Purpose: This study aims to investigate the general characteristics of dental technicians and their health behaviors and to analyze the related factors of their work stress and physical symptoms. Methods: The survey used structured self administered questionnaires for a survey targeting 741 members registered of the Dental Technician Association in Daegu Metropolitan City from September to October, 2009. Total of 518 replies and analyzed 490 questionnaire excluding 28 incomplete questionnaires. Results: The work stresses were higher in those who answered that they were under 30-years old, unmarried, lower in rank, or had longer work hours, lower monthly incomes or poor self-perceived health status. In addition, those who worked in a dental laboratory with poor work environment including insufficient ventilation, sand blaster with no powder collecting functions, etc., tended to experience higher work stress than others due to their work conditions. The total average of the respondents of the survey who answered that they suffered from some physical symptoms was 14.7 points. It was found that the factors affecting the score of physical symptoms include occupational features such as work hours, monthly income, etc., and physical work environment such as the presence or absence of ventilator, of dust-collectors within sand blaster, etc., and work stress, exerted significant influence. Conclusion: The outcomes of this study indicates that to lessen work stress and to ultimately alleviate physical symptoms, it is necessary to do the following: improve work environment of young unmarried women; adjust their daily working hours; ameliorate physical work environment. To improve overall physical symptoms, it is importance to establish a safe and healthy working environment.

• Journal of the Ergonomics Society of Korea
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• v.25 no.2
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• pp.173-180
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• 2006

An ergonomic study of school environment and school desks and chairs was conducted in Incheon metropolitan area. Total of 1,145 students from 11 schools participated in questionnaire survey and ergonomic evaluation of school desks and chairs was performed to study structural appropriateness and usability. Results of the study revealed that overall levels of school environment in terms of noise and dust density in the air were higher than safety standard. Desks and chairs were not properly designed with consideration of student's anthropometric characteristics. Prompt improvement of school environment and re-designing of school furniture are required in order to prevent reduced performance in study and physical disorders such as musculoskeletal disorders.

• Journal of Communications and Networks
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• v.17 no.6
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• pp.558-567
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• 2015

In recent years, we have seen a proliferation of mobile-network-enabled smart objects, such as smart-phones and smart-watches, that form a cyber-physical integrated network to connect the cyber and physical worlds through the capabilities of sensing, communicating, and computing. Discovery of the relationship between smart objects is a critical and nontrivial task in cyber-physical integrated network applications. Aiming to find the most stable relationship in the heterogeneous and dynamic cyber-physical network, we propose a distributed and efficient relationship-discovery algorithm, called dynamically maximizing remaining unchanged time with minimum connected dominant set (DMRUT-MCDS) for constructing a backbone with the smallest scale infrastructure. In our proposed algorithm, the impact of the duration of the relationship is considered in order to balance the size and sustain time of the infrastructure. The performance of our algorithm is studied through extensive simulations and the results show that DMRUT-MCDS performs well in different distribution networks.

• Journal of the East Asian Society of Dietary Life
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• v.21 no.4
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• pp.609-624
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• 2011

The purpose of this study was to examine the physical environmental factors in coffee shops which determine customer brand loyalty, and to investigate the mediated effects of customer satisfaction and emotional responses on the causal relationship between the physical environmental factors and brand loyalty. A sample of 400 coffee shop customers was collected from Seoul and Gyeonggi in March, 2011 through a self-administered questionnaire. 351 of 400 subjects were used for validity and reliability analysis. 12 outliers were removed from the analysis, and 339 subjects were used to derive the results. Multiple linear regression and stepwise regression were conducted after the construct validity and reliability. The results can be summarized as follows: (1) Physical environmental factors in coffee shops consists of 5 dimensions such as facility aesthetics, cleanliness, ambiance, layout, and internet environment. (2) Facility aesthetics, ambiance, and internet environment had an influence on brand loyalty. (3) The effects of cleanliness and layout on brand loyalty, were not significant on multivariate analysis. However, the relationship between cleanliness and brand loyalty was mediated by emotional responses and also the relationship between layout and brand loyalty was mediated by customer satisfaction. (4) The mediating effects of customer satisfaction were higher than those of emotional responses.