• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.289-292
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• 2012

Presently, there is the blind of about 20~300,00 people including didn't register in Korea Usually, they used white stick when they walk outside. There is the blind receiving the help of the guide dog but a small number of blind uses due to many composite problems including the cost problem, and etc. Presently, the guidance service aid long for the blind which is commonly used adheres the RFID tag to the white stick. It remains at the level of the extent of making the cover block and RF communication by using this. The recognition distance is short. This is the actual condition in which it is difficult to determine the location of the clear obstacle and size and form, it doesn't become the help which is actually big in the walk of the blinds. Thus, in this paper, the investigation of 'Smart Portable Navigation System' development of the Cortex-A8 Platform base tries to be handled so that the blinds can walk easily.

• Journal of the Korean Institute of Landscape Architecture
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• v.28 no.4
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• pp.75-90
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• 2000

This study suggests the methods of the assessment and creation of biotopes in small and medium sized cities, in Korea. For this purpose, Chonju city was selected to classify and asses the biotope types. Moreover, relevant legislations to conserve and enhance urban biotopes were examined. The results of this study are as follows: 1) There were two approaches to asses the potential of urban biotopes in medium-sized cities. One was the urban scale evaluation for urban green spaces and the other was the biotope scale evaluation for the classification and evaluation of biotopes. 2) The urban scale evaluation was developed through overlaping analysis of landuse and vegetation factors. This study also included the conception of watershed. In this conception, three watersheds in Chonju city were characterized. According to these characteristics, individual programs for conservation and enhancement of urban green space were suggested. 3) For the biotope scale evaluation, Selected site was inclusively mapped and field investigation actually was carried. There were total 9 types of bitopes. Especially landuse was appeared in various evaluation items were vegetation structure, area of green space, condition of vegetation and vegetation profile. Mt, Gonji and Dukjin park, Chonbuk national University and fields were evaluated highly I the potential. 4) The biotope programs were based on the results of assessment and physical characteristics of biotopes. The uniform and simple levels on vegetation must be modified with various levels of vegetation structure and vernacular plants. And the physical characteristics like Points, Corridors and Patches can be organized by the conception of biotope networking theory. 5) The proper legislative environment was the clue elements for the biotope programs. Until now, only five types of parks and two types of green space are defined and the minimum size of green space has been proposed by the law. So, it is necessary to enlarge the conception of green space in legislation and improve the quality of green space by amending the related regulations. This study has limitation because it was selected only in Chonju. Through the continuous studies, we need to apply this other small and medium sized cities, South Korea. Also the data collection and management of theme maps such as actual vegetation, landuse and a soil must be done preliminary.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.30 no.3
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• pp.270-279
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• 2020

Objective: The aim of this study was to propose revision of the occupational exposure limit(OEL) for 1-Bromopropane(1-BP) following a review of the appropriateness of the standard in light of increasing epidemiological data and handling risk. Materials and Methods: The results of toxicity and epidemiologic investigations for 1-BP and agencies' OELs were compared and reviewed through a literature review. In order to investigate the status of 1-BP handling in South Korea, data from work environment actual condition survey results and work environment measurement results were used. Results: The toxicity of 1-BP, such as central nervous system(CNS) damage, peripheral neuropathy, hematological adverse effects, and developmental and reproductive toxicity(male and female) has been reported. ACGIH recommends 0.1 ppm as a TLV-TWA value, but the OEL of South Korea stands at 25 ppm, which is 250 times higher than the TLV-TWA. Although 1-BP is a specially managed substance under the Industrial Safety and Health Law, the currently applied OEL cannot be said to be a safe level based on the results of epidemiological studies to date. In a work environment measurement in 2017, the total number of samples was 626, which were derived from 78 industries, and the average concentration was 1.173 ppm(standard deviation 2.88). Conclusions: To protect the health of workers handling 1-BP, estimated to be 780 in South Korea, it is necessary to strengthen the OEL(TWA) to a level of 0.3 ppm(lower than the 0.34 ppm with known toxic effects), which is believed to be safe as a result of epidemiological investigation. "Skin" notation should be recommended.

• Journal of Engineering Education Research
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• v.10 no.1
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• pp.86-96
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• 2007

The purpose of this study is to investigate and to display circumstances about importance issues connected with various publication data and engineering ethic principle. It is an investigation study about circumstance and actual conditions of engineering ethics education that is spoken by engineering ethics or engineer ethics on present Japan. Engineering ethics principle, or engineer ethics education is continued until present appearing in the 1980s by formal course of study in the case of American university. But, in the case of Japan, along with appearance of JABEE (Japanese Accreditation Board for engineering education), engineering ethics education for engineer is proceeded very intensively. At present, the purpose of engineering ethics education is heard on important engineering literary category so much so that can emphasize very as basic attitude to prepare everybody if it is a person who is to be an engineer. The present condition and circumstance of Japanese engineering ethics education analysis may become good information in the beginning step on ethics principle education of engineering our country.

• Journal of Korean Public Health Nursing
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• v.19 no.1
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• pp.5-17
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• 2005

This research was conducted to determine the actual condition of obesity and obese students' total cholesterol. blood glucose and blood pressure, and to analyze the relationship between the obesity rate and total cholesterol. blood glucose and blood pressure among the students at 7 middle schools in A city in Kyoung ki-do. The results were as follows: 1. Among 12,148 student participants in this investigation. students of normal weight range were $91.5\%$ and obese students were $8.5\%$, breaking down to mildly obese of $4.3\%$ $(boys,\;5.4\%;\;girls,\;3.0\%)$. moderately obese of $3.4\% (boys,\;4.6\%;\;girls,\;2.1\%)$ and severely obese of $0.7\%(boys,\;0.9\%;\;girls,\;0.5\%)$, The gender difference was statistically significant $(x^2=111.5830. p=.0001). 2. To analyze the 1.027 obese students. the average of total cholesterol was 166.9mg/dl, 171.0mg/dl and 182.1mg/dl in the mild, moderate and severe obesity groups, respectively. The results became more significant with increasing obesity rate (F=10.06, p=.0001). The average of systolic blood pressure (SBP) was 121.9mmHg, 123.2mm, and 127.5mm, respectively. The results became more significant with increasing obesity rate (F=6.29, p=.0019). The average of diastolic blood pressure (DBP) was 74.4mmHg. 76.0mmHg. and 78.4mmHg, respectively. The results became more significant with increasing obesity rate (F=8.15. p=.0003). The average of blood glucose was 83.3mg/dl, 84.5mg/dl, and 82.3mg/dl, respectively. There was no significant difference with obesity rate. 3. There were significant correlations between obesity rate and cholesterol(r=.11288, p=.0003), between obesity rate and DBP(r=.14209, p=.000l). and between obesity rate and SBP(r=.14081. p=.0001). However, there was no significant correlation between obesity rate and blood glucose (r=.00655, p=.8339).

• Journal of Environmental Science International
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• v.19 no.7
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• pp.889-900
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• 2010

The experimental design and response surface methodology (RSM) have been applied to the investigation of the electro-UV complex process for the disinfection of E. coli in the water. The disinfection reactions of electro-UV process were mathematically described as a function of parameters power ($X_1$), NaCl dosage ($X_2$), initial pH ($X_3$) and disinfection time ($X_4$) being modeled by use of the Box-Behnken technique. The application of RSM using the Box-Behnken technique yielded the following regression equation, which is an empirical relationship between the residual E. coli number and test variables in actual variables: Ln (CFU) = 23.57 - 0.87 power - 1.87 NaCl dosage - 2.13 pH - 2.84 time - 0.09 power time - 0.07 NaCl dosage pH + 0.14 pH time + 0.03 $power^2$ + 0.47 NaCl $dosage^2$ + 0.20 $pH^2$+ 0.33 $time^2$. The model predictions agreed well with the experimentally observed result ($R^2$ = 0.9987). Graphical response surface and contour plots were used to locate the optimum point. The estimated ridge of maximum response and optimal conditions for the E. coli disinfection using canonical analysis was Ln 1.06 CFU (power, 15.40 W; NaCl dosage, 1.95 g/L, pH, 5.94 and time, 4.67 min). To confirm this optimum condition, the obtained number of the residual E. coli after three additional experiments were Ln 1.05, 1.10 and Ln 1.12. These values were within range of 0.62 (95% PI low)~1.50 (95% PI high), which indicated that conforming the reproducibility of the model.

• Journal of the Korean Institute of Gas
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• v.21 no.6
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• pp.39-45
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• 2017

The facilities using LP gas in camping vehicles, which are exposed to safety problems due to the proliferation of domestic leisure culture, are not subject to statutory inspection so, effective safety management measures are needed because the subject or method of safety management is ambiguous. In this study, we tried to propose the safety management measures through the deduction of representative types of camping vehicles, research on the actual condition of LPG facilities in camping vehicles and investigation and review of relevant regulations. Through the results of this study, we expect to contribute to the improvement of the safety management efficiency and safety of facilities using LP gas in domestic camping vehicles.

• Journal of Digital Convergence
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• v.13 no.1
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• pp.503-514
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• 2015

This article tried to suggest ways to improve satisfaction of their life, as finding the determinants of the disabled through the cross-section research by the Ministry of Health and Welfare. This article used data from the 2011 investigation of actual condition for the Disabled, which is a representative of the disabled in Korea. For statistical analysis, this paper used PASW statistics 18.0 (SPSS Inc, Chicago, USA). Analysis of frequency, descriptive statistic and multiple regressions were conducted. The level of significance was set up as 0.05. As the result, we found that life satisfaction of the disabled was influenced by all factors such as factor in discrimination, socioeconomic factors, disability and health factor. Therefore, we think that the government needs to prepare a systemic method for extending right of the disabled and improving rehabilitation and independent living.

• Korean Journal of Oriental Medicine
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• v.12 no.1
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• pp.13-22
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• 2006

Background and Aims: Herbal drugs and traditional medicines have lately attracted considerable attention by global pharmaceutical corporations because the conventional chemical drugs didn't work well for many chronic diseases or intractable diseases. The government of Korea is also supporting to develop the new drug which is high value added product, and the natural medicine including herbal medicine(or Traditional Korean Medicine) have a significant presence in this field. non-clinical pharmacology/toxicology study and clinical trial are the two major criteria which estimate efficacy and safety for registration of new drugs. All of the pharmaceutical companies producing herbal medicine and the academic and the academic world of Tradition Korean Medicine have the will to develop new herbal drugs, but there are obstacles that they have neither experience nor guideline about clinical trial. Therefore for developing new herbal drugs, it is necessary to research the present conditions and comprehensive systems about clinical trial in Northeast Asian countries China, Taiwan and Japan because they have the common background with Korea in traditional medicine fields. Methods : The present state of clinical trial for herbal medicine in Korea was investigated. And then, those in China, Taiwan, Japan was also investigated. Results and conclusions : There are significant differences among 4 Southeast Asian countries Korea, China, Taiwan and Japan each in present condition, purpose, involved comprehensive system including legislation, and actual operation of clinical trial for traditional medicine.

• Journal of Information Management
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• v.26 no.1
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• pp.80-98
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• 1995

Search strategies is a means to make an efficient search. Among several studies of search strategy, Bates' $\ulcorner$Search Tactics$\lrcorner$ has been often cited and introduced, but their studies have been superficial. In this paper, the contents of Bates' $\ulcorner$Search Tactics$\lrcorner$ are examined in detail, and we try to represent the actual online search process based upon Bates' $\ulcorner$Search Tactics$\lrcorner$. The following three kinds of survey are made in order to clarify which and how tactics are used: (1) Interview with 7 searchers who belong to different types of organizations, and use different kinds of databases (2) Analysis of some online search records. (3) Analysis of written applications for a newspaper database during one year. In conclusion, Bates' tactics falls into categories and new several tactics which often used are added. The following five factors affect online search activities, search strategy, and search tactics. (1) the difficulty of search requests (2) the kinds of databases (3) the charging policy for each online search (4) the presence of the user during the search (5) the searcher' online experience In the limited condition, typical tactics are suggested, but in order to generalize the pattern of using tactics, further investigation is necessary.