• Journal of the korean academy of Pediatric Dentistry
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• v.32 no.2
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• pp.370-376
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• 2005

In children, dental anxiety of dental treatment has been recognized as a source of problems in patient man agement for many years. Dental anxiety can be causes of negative cooperation, cancel and avoid of dental treatment. Therefore, dentist and dental team should recognize of child's dental anxiety as early as possible and manage appropriately. In previous studies, it is reported that parental dental anxiety affect dental anxiety and cooperation of their child. And it is parental decision which results in a child's visit to the dentist, rather than a child's decision in most cases. Therefore, it is important to identify the relationship of dental anxiety between child and parent. We estimated child's dental anxiety before dental treatment using Venham Picture Scale that is useful even a very young child and parental dental anxiety using Corah's dental anxiety scale. Then, two values above were compared. Child's cooperation, temperament, sex, age, parental education were estimated and compared with dental anxiety, too. The results were as follows: 1. There are positive relationship of dental anxiety between child and parent with the correlation analysis(P<0.02). 2. There are negative relationship of child's dental anxiety and child's cooperation with the correlation and regression analysis(P<0.001). 3. Low anxiety group has lower mean value of four temperament item with the Student's t-test. But, there is no statistical differences(P>0.1). 4. Girl and younger group have higher mean value of dental anxiety than boy and older group with the Student's t-test(P<0.001). 5. Low educated parents have higher mean value of dental anxiety than high educated parents with the Student's t-test(P>0.1).

• Corrosion Science and Technology
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• v.14 no.2
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• pp.47-53
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• 2015

Recently, the bending process is greatly applied to fabricate the pipe line. Bending process can reduce welding joints and then decrease the number of inspection. Thus, the maintenance cost will be reduced. Induction heat bending process is composed of bending deformation by repeated local heat and cooling. By this thermal process, corrosion properties and microstructure can be affected. This work focused on the effect of induction heating bending process on the properties of ASME SA106 Gr. C low carbon steel pipes. Microstructure analysis, hardness measurements, and immersion corrosion test were performed for base metal and bended area including extrados, intrados, crown up, and down parts. Microstructure was analyzed using an optical microscope and SEM. Hardness was measured using a Rockwell B scale. Induction heat bending process has influenced upon the size and distribution of ferrite and pearlite phases which were transformed into finer structure than those of base metal. Even though the fine microstructure, every bent area showed a little lower hardness than that of base metal. It is considered that softening by the bending process may be arisen. Except of I2, intrados area, the others showed a similar corrosion rate to that of base metal. But even relatively high rate of intrados area was very low and acceptable. Therefore, it is judged that induction heat bending process didn't affect boric acid corrosion behaviour of carbon steel.

• Journal of Oral Medicine and Pain
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• v.23 no.4
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• pp.403-418
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• 1998

The aim of this study was to measure effects of the following items to pain and pain behavior reaction in patients with chronic orofacial pain. Items that contribute to the first factor(Environmental Influences) measure environmental sources of information that may affect illness behavior; Second factro(Loss of Control) measure appraisals and attributions perceived to influence personal views aobut pain; Third factor(Health Care Avoidance) measures a variety of avoidant behaviors; Fouth factor(Past and Current Experiences) measures experiences with treatment); Fifth factor(Physiological Responsivity) measures physiological parameters that are experienced in association with pain; Sixth factor(Thoughts of Disease Progression) measures thoughts regarding the etiology and progression of disease in relation to pain. 150 patients that were consist of 40 male and 110 female were participated in this study. The obtained results of this study were as follows : 1. Environmental influences and loss of control scales were recorded high score in patients with chronic orofacial pain 2. "Physician's descriptions of what your pain will be like" and "Physician's facial expression when they ask about your pain" items from the environmental influences were recorded high score. These results indicated that responsibility of doctro is very important to the pain reaction behavior of patients. Also, items from thoughts regarding the etiology and progression of disease in relation to pain influenced to the pain reaction. 3. There were significant defferences on the "nurses' descriptions of what you pain will be like", "physician's and nurses' facial expression when they ask about your pain", "TV and radio", and "Literature" items from the environmental influences between male and female patients. 4. There were no significant differences on the each scale between arthrogenous and combitnation group and significant correlated with all 6 scales.

• Journal of Families and Better Life
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• v.25 no.2 s.86
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• pp.13-21
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• 2007

This study investigates the effect of related variables (types of job, term of employment, working time, job satisfaction, payment satisfaction and, working stress) on the sense of hopelessness felt by married males. The study was conducted on 237 male employees residing in Busan, and measurement devices for study were job-related variables, working stress and hopelessness scale. The study used SPSS 12.0 program to analyze data, and conducted item analysis and reliability test for measure establishment. Average, Standard deviation, one-way ANOVA, scheffe-test, Pearson correlation, and path analysis through regression analysis were conducted pertaining to research subject. The result of this study is as follows; First, working stress has significant difference upon types or working, term of employment and job satisfaction. Office workers relatively have longer term of employment and workers who are less satisfied with job suffer from more working stress. Second, hopelessness has significant difference upon term of employment, job satisfaction and payment satisfaction among job-related variables. Thus, hopelessness is relatively less when term of employment is shorter and job satisfaction and payment satisfaction is higher. Third, variables which affect directly to working stress and hopelessness are term of employment $(\beta=.245)$, payment satisfaction $(\beta=-.182)$ and working stress $(\beta=.189)$, and types of job, term of employment and job satisfaction influences hopelessness indirectly through working stress. In conclusion, workers are more negative when term of employment is longer, payment satisfaction is less and working stress is higher. Moreover, longer term of employment and less job satisfaction contribute to higher working stress and eventually influence hopelessness. Term of employment affects the most to hopelessness $(\beta=.274)$, and it is followed by working stress $(\beta=.189)$ and payment satisfaction $(\beta=-.182)$.

• Korean Journal of Human Ecology
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• v.16 no.4
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• pp.837-848
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• 2007

The literature suggested that a small reduction in overall blood pressure can have a large effect on overall prevalence of hypertension, and therefore, the affect of taste preferences of the population on salt intake should be considered for long-term blood pressure intervention programs. The purpose of this study is to investigate the influence of salt taste preference and salt taste sensitivity on salt intake behavior as risk factors for high blood pressure. We collected information on blood pressure, diet and lifestyle behaviors, salt taste preference and salt taste sensitivity from 540 respondents from Suseo-dong, Seoul. Salt taste sensitivity was assessed by administering a 1% NaCl solution to the subject's tongue and measuring the perceived intensity on 10 level scale. Salt intake behavior was classified into 3 categories: frequency of high-sodium foods, practice of salt-reducing behavior and frequency of vegetable and fruit intake. Salt taste preference showed a significant relation to the subjects' blood pressure, i.e. subjects with a higher salt preference had higher blood pressure. Salt taste sensitivity did not show a significant relation to blood pressure. However, there was a positive correlation between salt taste preference and salt taste sensitivity. Among the 3 indicators used to measure salt intake behavior, the practice of salt-reducing behavior remained significantly correlated to blood pressure. Moreover, salt-reducing behavior and salt taste preference showed a significant correlation, i.e. people who do not like salty foods tend to practice more salt-reducing behavior, leading to reduced levels in blood pressure. In a population, a small reduction in overall blood pressure can have large effects in overall prevalence of hypertension, in contrast to clinical studies where achievement of an individual's normal blood pressure is emphasized. Therefore, taste preference of the population should be considered for long-term blood pressure intervention programs.

• Fire Science and Engineering
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• v.27 no.2
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• pp.31-39
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• 2013

The Fire Dynamics Simulator (FDS) has been applied to simulate a full-scale pool fire in well-confined and mechanically ventilated multi-compartments representative of nuclear power plant. The predictive performance of FDS was evaluated through a comparison of the numerical data with experimental data obtained by the OECD/NEA PRISME project. To identify clearly the FDS results regarding to the user-dependence in the process of FDS implementation except for the intrinsic limitation of FDS such as simple combustion model, only the over-ventilated fire condition was chosen. In particular, the importance of accurate boundary conditions (B.C.) in mechanically ventilated system were discussed in details. It was known from FDS results that the B.C. on inlet and outlet vents did significantly affect the thermal and chemical characteristics inside the compartments. Finally, it was confirmed that the FDS imposed an accurate ventilation B.C. provided qualitatively good agreement with temperatures, heat fluxes and concentrations measured inside the nuclear-type multi-compartments.

• Korean Journal of Adult Nursing
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• v.26 no.4
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• pp.393-402
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• 2014

Purpose: The aim of this study was to describe the risk of dysphagia among older adults in senior centers and to find the relationships between the risk of dysphagia and dysphagia-specific quality of life. Methods: The participants were 260 community-dwelling older adults, aged 65 years in two senior centers. Data were collected by self-report questionnaires or face to face interviews. The instruments were the modified dysphagia risk assessment scale for elderly and dysphagia-specific quality of life questionnaire. The data were analyzed using t-test, $x^2$-test, logistic regression, and pearson's correlation. Results: 162 older adults (62.3%) were classified as having the risk of dysphagia. Severe dry mouth (OR=15.677, CI=2.986~82.297), neurologic disease (OR=10.125, CI=1.092~93.899), gastritis (OR=5.731, CI=1.482~22.173), denture discomfort (OR=2.969, CI=1.016~8.677), teeth discomfort (OR=2.61, CI=1.311~5.196) were the significant factors predicting the risk of dysphagia. There is a significant correlation between the risk of dysphagia and dysphagia-specific quality of life. Conclusion: Dysphagia could be a major health problem among community dwelling older adults. It can affect the dysphagia-specific quality of life. Older adults having severe dry mouth, neurologic disease, or gastritis should receive dysphagia risk assessment and proper management on a regular basis. An effective nursing intervention needs to be developed for the older adults with risk factors of dysphagia.

• Journal of the Korean Society for Library and Information Science
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• v.48 no.3
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• pp.193-215
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• 2014

This study examines undergraduate nursing students' user satisfaction and affective experience of collaborative information behavior in a group-based learning through survey method to see the relationship between these factors. For this purpose, the affective experiences (positive and negative aspects) of collaborative information search were examined using the PANAS scale through the same questionnaire. Correlation between students' experiences of collaborative information search and affective aspects were examined, and statistical significance using the t-test were also conducted to measure the relationship among students' demographic factors, experiences of collaborative information search and affective aspects. The results revealed that there was a significant correlation between experiences of collaborative information search and affective aspects. Also, there were significant relationships among students' demographic factors, experiences of collaborative information search and affective aspects. In particular, there were signigicant differences in students' overall satisfaction of collaboration and positive aspects between male and female students who experienced collaborative information search. This study found out the possibilities for a follow-up study for affective aspects in collaborative information behavior.

• Journal of Acupuncture Research
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• v.31 no.2
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• pp.173-182
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• 2014

Objectives : There are few reports on treatment of thoracic outlet syndrome in the field of traditional Korean medicine. The aim of this study is to report a case of a 29-year-old male patient diagnosed with thoracic outlet syndrome, whose symptoms were relieved after 3-week integrated Korean medical treatment. Methods : A patient diagnosed with thoracic outlet syndrome was admitted into the Korean medicine hospital. The patient had left shoulder pain and left arm numbness. The pain was worse if it had become cold. The patient was treated using Sa-am acupuncture(Daejangseunggyeok), sweet bee venom acupuncture, herbal medicine and other treatment including physical therapy from September 7th to 27th of 2012. Improvement of the patient's symptoms was evaluated by verbal numerical rating scale(VNRS), skin surface temperature difference between the left and right symmetric part of digital infrared thermographic image(DITI). Results : After 3-weeks of treatment, VNRS decreased and skin surface temperature difference between the left and right symmetric part of DITI showed moderate improvement. Conclusions : The results suggest that integrated Korean medical treatment may affect to reduce the symptoms of thoracic outlet syndrome. Further study is needed to evaluate the importance of this report.

• Journal of Korean Society on Water Environment
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• v.26 no.2
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• pp.289-296
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• 2010

The purpose of this study is to evaluate various pre-treatment methods and proprieties of water quality for wastewater reuse using reverse osmosis (RO) processes. Secondary effluents were sampled from wastewater treatment plants and lab scale pre-treatments and RO filtration test were conducted systematically. Specifically, different types of pre-treatments, such as coagulation, microfiltration and ultrafiltration, were employed to evaluate the removal efficiency of particle and organic matters which may affect the membrane fouling rate. RO process was later added to eliminate trace amounts of remaining organic matters and salt from the raw water for wastewater reclamation. The permeate through the RO process satisfied water quality regulations for industrial water uses. The experimental results showed that the initial fouling tendency differed not only by the feed water properties but also by the membrane characteristics. Membrane fouling was greater for the membranes with large surface roughness, regardless of the hydrophobicity and zeta potentials. Thus both careful consideration of pre-treatment options and proper selection of RO membrane are of paramount importance for an efficient operation of wastewater treatment.