• The Journal of Korean Institute of Communications and Information Sciences
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• v.27 no.1B
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• pp.114-124
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• 2002

In this paper, we proposed the image-based 3D ray tracing indoor propagation model using a patch scattering model for fading analysis of indoor propagation environments. An image-based 3D ray tracing technique is mainly used, which allows the rapid generation of the complex channel impulse response for any given location and polarization of transmitter and receiver. Due to the site specific nature of indoor environment, we took into account the location and the electrical properties of individual walls and objects such as windows, doors and plaster board in our propagation model. Besides, the 3D radiation beam-patterns and polarizations of arbitrary antennas were considered, and using patch scattering model we can consider the change of the polarization due to the scattering from the various indoor objects, like desks, chairs and etc. the are almost impossible to be modeled with the basic image-based ray tracing method. The model will predict the impulse response, the rms delay spread, the fading characteristics of the channel and performances of the polarization diversity schemes.

• PNF and Movement
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• v.12 no.2
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• pp.71-80
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• 2014

Purpose: The purpose of this study was to provide basic data to establish effective clinical training programs by identifying various factors that influence the satisfaction of physical therapy students with those programs. Methods: The study subjects were 205 students from six colleges (two 4-year and four 3-year colleges) who participated in clinical training programs. The colleges have physical therapy departments and are located in Busan, Ulsan, and Gyeognam. A survey consisting of 75 questions was conducted between March and December, 2003. Survey responses were analyzed through a frequency analysis, descriptive statistics, and the multiple responses approach, and correlations among the questions were analyzed using a chi-square test. Results: The level of satisfaction with clinical training programs did not differ according to the school system or the size of the clinical training institution. However, several factors led to a higher level of satisfaction, including more active participation of students in the clinical training, more intensive instruction from school professors, a larger number of subjects to complete before the clinical training, and a higher level of student perception that their institution's clinical training program was systematic Conclusion: This study surveyed physical therapy students located in Busan, Ulsan, and Gyeongnam who attended selected schools and training institutions that have their own individual characteristics; therefore, this study may have limitations for comparative analysis. However, if more extensive studies are per formed regionally in the future using the approach taken here, clinical training programs could be developed that can satisfy both schools and the industry.

• Journal of Radiation Protection and Research
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• v.47 no.2
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• pp.67-76
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• 2022

Background: We conducted a cross-sectional study of residents within and outside Fukushima Prefecture to clarify their perceptions of the need for smartphone applications (apps) for explaining exposure doses. The results will lead to more effective methods for identifying target groups for future app development by researchers and municipalities, which will promote residents' understanding of radiological situations. Materials and Methods: In November 2019, 400 people in Fukushima Prefecture and 400 people outside were surveyed via a web-based questionnaire. In addition to basic characteristics, survey items included concerns about radiation levels and intention to use a smartphone app to keep track of exposure. The analysis was conducted by stratifying responses in each region and then cross-tabulating responses to concerns about radiation levels and intention to use an app by demographic variables. The intention to use an app was analyzed by binomial logistic regression analysis. Text-mining analyses were conducted in KH Coder software. Results and Discussion: Outside Fukushima Prefecture, concerns about the medical exposure of women to radiation exceeded 30%. Within the prefecture, the medical exposure of women, purchasing food products, and consumption of own-grown food were the main concerns. Within the prefecture, having children under the age of 18, the experience of measurement, and having experience of evacuation were significantly related to the intention to use an app. Conclusion: Regional and individual differences were evident. Since respondents differ, it is necessary to develop and promote app use in accordance with their needs and with phases of reconstruction. We expect that a suitable app will not only collect data but also connect local service providers and residents, while protecting personal information.

• Journal of Korean Clinical Nursing Research
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• v.29 no.3
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• pp.283-295
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• 2023

Purpose: The purpose of this study was to provide basic data to understand the organizational culture of nurses by categorizing nurses' experience of coping with bullying in the workplace through Q methodology and analyzing the characteristics of each type, and to induce correct policy measures and interventions to create an atmosphere created in the nursing clinical field to be more advanced and positive. Methods: To form the Q population, focus group interviews were conducted with nurses working for more than six months at two general hospitals in Seoul and Gyeonggi. Interviews were conducted by 12 nurses introduced to participants who can provide researchers with a wealth of information on workplace bullying experiences without filtration. In addition, the Q population was extracted by reviewing the results. Based on the results derived from this, 38 Q statements in total were extracted. Forty clinical nurses were required to classify Q sample statements, and the data collected through this were analyzed using the pc-QUANAL program. Results: As a result of the analysis, a total of five types of clinical nurses' experiences of coping with bullying in the workplace were identified: 'tense emotion-based tolerance response,' 'positive thinking-based self-effort response', 'individualistic thinking-based passive response', 'support system-based emotional expression response' and 'active response centered on problem-solving'. Conclusion: The derived response types are expected to be guidelines for suggesting strategies to eradicate bullying in the workplace at the organizational level, individual level, prevention level, and organizational culture level.

• Korean Journal of Occupational Health Nursing
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• v.21 no.2
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• pp.98-107
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• 2012

Purpose: In this research, we recognized the effects of DISC behavior styles of office workers on job satisfaction, organizational commitment and job performance, and tried to present a basic data for designing an efficient working system and enhancing the quality of personal life by applying them in the real office work environment. Methods: A survey was conducted for 315 office workers in D city from Jan. 28th to May 30th 2010, and the collected data were analyzed with the SPSS/WIN 17.0. Results: 1. The differences on job satisfaction, organizational commitment and job performance according to the general characteristics of subjects, were significant except for the gender in job satisfaction and education in organizational commitment. 2. Relationships in job satisfaction, organizational commitment and job performance of subjects, showed positive correlation. 3. Job satisfaction, organizational commitment and job performance according to the DISC behavior styles, were generally not significant. However, some questions were characterized by the DISC types. Conclusion: It is necessary to seek an efficient design method by identifying the differences of individual behavior types to enhance job satisfaction, organizational commitment and job performance of office workers, and such an effective job design should be made at the organizational level.

• Korean Journal of Human Ecology
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• v.14 no.2
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• pp.293-302
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• 2005

The purpose of this study is to compare hair care behaviors between Korean and Australian women whose individual hair characteristics, social backgrounds, and culture were different from each other. Then, this study also aims to provide some basic data for professionals in the field of beauty education and industry. Data were collected through a survey with 208 Australian females and 392 Korean females. Analyses included t-test, frequency analysis, and one-way ANOVA. The results are as follows: The Korean women mostly had black and brown natural hair, and 68.4% of them had color. On the other hand, the Australian surveyees had brown and dark blonde, and 85.4% of them had color. They both were asked why they were using hair products. The Koreans responded that they were for hair moisturization, while the Australians said they were for producing a hair style they wanted. In addition, the Koreans made the most use of a hair conditioner and hair wax, while the Australian women did a hair spray and gloss. As far as the satisfaction with beauty salon service goes, the Australian respondents showed more service satisfaction than the Koreans on average. The homogeneity of the two nations' average points was t-tested. The result indicated that significant differences existed in the hair shop satisfaction with services, such as dyeing, haircut, blow dry, shampooing and massaging, and staff attitudes.

• Journal of Digital Convergence
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• v.21 no.1
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• pp.29-34
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• 2023

The purpose of this study was to find out the relationship between the frequency of consumption of sports drinks and energy drinks and aerobic physical activity in the 6-29 year old group in the National Health and Nutrition Examination Survey. The sociodemographic characteristics, aerobic physical activity, and beverage intake of the subjects were calculated using composite sample descriptive statistics, and the mean difference between groups was analyzed by cross-tabulation, χ²-test, and binary logistic regression analysis. High-intensity aerobic activity was analyzed as an increase in the intake frequency of sports drinks(ionic drinks, vitamin drinks) and energy drinks(high-caffeine drinks) (p<0.05). Compared to moderate-intensity aerobic physical activity, high-intensity aerobic physical activity was analyzed as a factor influencing the increase in beverage intake frequency. The purpose of this study was to investigate the relationship between physical activity and beverage consumption, which is a critical issue for promoting health both now and in the future, and to developed an intervention program based on the findings. Through this study, we aimed to gather basic data that can help people live healthy lives, and raise both individual and societal awareness of the importance of making better beverage choices.

• International Journal of Advanced Culture Technology
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• v.5 no.3
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• pp.24-34
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• 2017

Nail art is a kind of nail painting or decoration that adds to the beauty. Throughout making nail art, the worker was on a dusty operation with the smoothing of chemicals and nails. People working at nail shops not only use a variety of chemicals, but also experience a lot of fine powder during the process of nail trimmings. While drying the chemical adhesive, the workers often complain of eye, nose and throat discomfort. In addition, the acrylic brush is characterized by a lot of smell when washed with washing solution. Also nail art workers directly influence the worker's breathing through the work done by placing the guest's hands in a work space called a nail table. Chemical ingredients used in nail art procedures include acetone, ethyl acetic acid, toluene, butyl acetic acid, glue, and top coating of nail varnishes. Prolonged inhalation of these substances may cause dizziness, vomiting, as well as impaired respiratory system. The purpose of this study is to investigate the respiratory symptoms of nail shop workers who are likely to be affected by work in nail shop and to find out which factors have the greatest influence if they have respiratory symptoms. Therefore this study is to provide basic data on the health management system of people engaged in nail shop and to develop health education program. For this study, the data collection was collected on July 7, 2017 for the nail shop workers attending the nail art trend seminar held in Gwangju, in Korea. The data were all 236. However, except for the poor data, 208 data were used for the final analysis. The questionnaire consisted of 30 in general questions, questions about self-efficacy in 24 questions. elf-efficacy measuring tool developed by A.Y, Kim, I. Y, Park(2001). The self-efficacy questionnaire consists of 24 items and is self-reported 7-point Likert scale. The reliability of this tool was cronbach alpha = .934.The collected data were analyzed using spss 18.0. Information of Research participant performed frequency analysis. To examine the effects of personal characteristics on self-efficacy, $X^2$ analysis was conducted. And also $X^2$ analysis was conducted to analyze the coughing symptom appearance according to individual and environmental factors. A hierarchical regression analysis was used to determine which of the personal and environmental factors influenced cough symptoms.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.14 no.2
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• pp.47-57
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• 2011

This study monitored forest plant species vulnerable to climate change in Jiri Mountain, one of Korea's representative alpine regions, in order to securely preserve plant genetic resources susceptible to climate change and to utilize the results as basic data for bioclimatology prediction and management on a long-term basis. A majority of indicator plants tended to blossom one week to one month later in 2010 than in 2009. As with the blooming dates, the falling dates of blossoms became later in most species, with the exception for Weigela florida and Oplopanax elatus. Leaf bursting as well fell on later dates in a majority of species excluding Carpinus laxiflora and Cupressus sempervirens, displaying the most obvious differences among the data of analysis of the 2009-2010 physiological cycle changes. It is believed that was due to the fact that temperatures in February, March and April, which affect plants' blossoming and leaf bursting, were lower in 2010 than in 2009 and that cold temperatures in the winter lasted for a longer period in 2010 than in 2009. The dates of leaves being changed to red were similar in 2009 and 2010 by being or later or earlier by several weeks in 2010 than in 2009 without any regularity. Most species' leaves began to fall at similar dates in 2009 and 2010 or at later dates by one to two weeks in 2010 than in 2009. The temperature differences in late 2009 and late 2010 were not so large, resulting in similar dates of falling leaves, and gaps in several indicator plants' physiological cycles without any regularity can be attributed to each individual plant's physiological and environmental characteristics.

• Journal of Korean society of Dental Hygiene
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• v.15 no.2
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• pp.197-204
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• 2015

Objectives: The purpose of this study was to investigate the relation between health-related quality of life and oral health behavior and oral health status, and to provide the basic data for national oral health policy. Methods: The primary data of the 5th National Health Examination and Nutritional Survey(NHANES) in 2012 were used in this study. The subjects were 2,243 middle-aged people(40-59 years old), 827 persons were excluded for missing value or having diseases affecting quality of life(depression, stroke, cardiac infarction, angina, liver cancer, stomach cancer, colon cancer, breast cancer, cervical cancer, lung cancer, thyroid cancer, other cancers, arthritis), and 1,416 data were finally analyzed. Results: In health-related quality of life by subjects' characteristics, there was significant difference in gender, age, education, family income, and employment status(p<0.01) except for current smoking. Oral health behavior didn't have significant relation to health-related quality of life, but better oral health status showed better health-related quality of life(p<0.01). Conclusions: In conclusion, this study suggested that there was close relationship between the oral health status and health-related quality of life in moddle aged people. Therefore, national oral health policy is needed for the oral health promotion with commitment of oral prophylaxis and care programs to the individual and community.