• The Journal of Korean Orthopaedic Ultrasound Society
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• v.1 no.2
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• pp.117-121
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• 2008

Prolotherapy can be defined as the injection of growth factors or growth factor production stimulants to grow normal cells or tissue. Even though it has been a controversal procedure for decades, it is currently gaining in popularity among many physicians. The term prolotherapy was coined by Hacket in the 1950s to imply proliferation of normal tissue at ligamentous and tendinous entheses. The procedure has been described by other terms, such as sclerotherapy, regenerative injection therapy, and stimulated ligament repair. Incomplete healing from sprains or strains is common and can lead to chronic pain, joint instability and laxity, and is a risk factor for the development of osteoarthritis. Prolotherapy is commonly used for these musculoskeletal conditions which are refractory to usual care therapies. The proliferant solution and technique varies according to physicial training and preferance. Commonly reported proliferants include 10% to 25% dextrose, P2G and sodium morrhuate. High resolution ultrasound imaging of musculoskeletal tissue is increasing in popularity because of patient tolerability, low cost, ability to visualize tissue in real time motion and superior resolution of highly organized tissue such as a tendon. This procedure can be introduced by ultrasound imaging and tissue growth and repair after this procedure in a tendon or a ligament can be documented with ultrasound.

• Journal of Korean Society of Forest Science
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• v.99 no.3
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• pp.404-413
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• 2010

A study surveyed to visitors' expectation and satisfaction about trail in the Hanbat Arboretum by using Importance-Satisfaction Analysis (ISA). As the results of the research, the mean of importance was 3.85 and the mean of satisfaction was 3.67 in West Garden. Also the mean of importance was 3.99 and the mean of satisfaction was 3.78 in East Garden. Also appeared the evaluation factors of questionnaire the mostly importance that were higher than satisfaction. West Garden appeared necessary for items of safety features, drain facilities and board for risk area. Also East Garden appeared necessary for items of easy move for the wheelchair and carriage and safety features of trail. The research result are expected to provide clear path towards more effective adminstration and management tactics. Also expects with the research result that will be the possibility of raising the qualitative satisfaction of the visitor.

• Journal of the Korean Data and Information Science Society
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• v.21 no.6
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• pp.1253-1261
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• 2010

We develope the predictive model for the incidence of the stomach cancer by utilizing the health screening data of the National Health Insurance in Korea. We also explore the characteristics for the stomach cancer. We perform the logistic regression analysis using the data mining methodology and use SAS Enterprise Miner 4.1. This study shows that there exists a higher rate of the stomach cancer for males than females. Our study confirms that the major influencing factors for the incidence of the stomach cancer are age, drinking and a family history of cancer, lack of exercise. For man, the age is the most important determinant of the stomach cancer incidence, whereas the drinking is the most important determinant of the stomach cancer incidence for women.

• Journal of Environmental Health Sciences
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• v.30 no.3
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• pp.191-206
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• 2004

The present study investigated the hypothesis that a extremely low frequency magnetic field partially suppresses the synthesis of melatonin in a group of 28 primary schoolchildren living nearby and 60 primary schoolchildren aged 12 years living far away from overhead transmission power lines from December 2003 to April 2004 in Seoul, Korea. The mean personal exposure levels of the primary schoolchildren living nearby overhead transmission power line were 0.37 ${\mu}$T, whereas the value for the primary schoolchildren living away from overhead transmission power line 0.05 mT. From simple analyses, the mean melatonin levels in the primary schoolchildren living nearby were lower than away from overhead transmission power line, but not statistically significant differences in the levels of the melatonin (p=0.2421), whereas the statistically significant differences in the levels of the melatonin related to the distance from residence to power line less and more than 100 m by cut-off point (p=0.0139). In multiple linear regression analyses, distance from residence to power line (p=0.0146) and dietary habit about burned meat (p=0.0170) proved to be significant risk factors in the mean nocturnal melatonin levels in the primary schoolchildren. In conclusion, these results demonstrate that urinary levels of nocturnal melatonin are not altered in primary schoolchildren exposed to extremely low frequency magnetic field(ELF-MF) at overhead transmission power line.

• Journal of Gastric Cancer
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• v.11 no.4
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• pp.200-205
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• 2011

Purpose: Gastric cancer has a high incidence and mortality rate in Korea. Despite a growing older population and an increase in the number of older patients with gastric cancer, the older patients are not willing to undergo surgery due to their operative risks. Hence, to determine the clinical characteristics and outcomes of gastric cancer surgery for them, we investigate factors influencing the treatment decision. Materials and Methods: Between January 1996 and December 2005, a total of 1,519 patients were classified into two groups; the younger age group between 41 and 69 years of age, and the older age group of 70 years or older. The analysis conducted included patient characteristics, accompanying disorders, related American Society of Anesthesiologists (ASA) grade, pathological characteristics and survival rate for each age group. Results: Significant differences were found in the ASA grade (P<0.001) and the number of accompanying disorders (P<0.001) between the two groups. The average length of hospital stay after surgery was 14.5 days in the younger age group, and 13.3 days in the older age group (P=0.065). The average survival time was 47.5 months in the younger age group, and 43.2 months in the older age group (P<0.001). Conclusions: This study demonstrated that there was more number of accompanying disorders with a high surgical risk in the older age group. However, there was no significant difference between the older and younger age groups in terms of the incidence of complications, under the given disease conditions and if proper management was provided.

• Advances in pediatric surgery
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• v.16 no.2
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• pp.177-189
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• 2010

Traumatic injury is one of the leading causes of morbidity and mortality in children. This is a clinical review of pediatric blunt abdominal trauma. A retrospective analysis of the 112 children with blunt abdominal trauma aged 15 years or less treated at the Department of Pediatric Surgery, Chonbuk National University Hospital was performed. The analysis included age, sex, injury mechanism, number and site of the injured organ, management and outcomes. The average age of occurrence was 7.6 years, and the peak age was between 6 and 8 years. There was a male preponderance with a male to female ratio of 2.3:1. The most common cause of blunt abdominal trauma was traffic accidents (61.6 %), principally involving pedestrians (79.7 %). The accident prone times were between 8:00 AM and 8:00 PM, the weekends (40.2 %), and the winter respectively. Thirthy-five patients (31.2 %) had multiple intra-abdominal organ injuries and the most common injured organ was the liver. Seventy-four cases (66.1 %) were managed non-operatively and eleven cases (9.8 %) expired. Of the patients who were treated surgically or were to be operated on one patient died before surgery, the remainder died during or after surgery. Risk factors such as number of injured organ, systolic and diastolic blood pressure, and trauma scores by Glasgow coma scale (GCS), Pediatric trauma score (PTS), revised trauma score (RTS), injury severe score (ISS), TRISS were significantly correlated with mortality rate.

• Journal of Global Scholars of Marketing Science
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• v.16 no.4
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• pp.13-38
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• 2006

This study is concerned with the factors that influence the radicalness of new product development by firms. The innovativeness of firms' new product development differs in their frequency and radicalness. Based on previous research on product innovations, this study provides a hypothetical model that links firms' internal variables and external relations variables to the radicalness of product innovation, which in turn is linked to marketing performance. For an empirical analysis, the data were collected from South Korean firms. The result of this study provides evidence that the stronger is firms' management attitude toward risk taking, marketing competency, and technical competency, the higher is the possibility of radical product innovation. It also shows that, contrarily to the hypothesis, firms with collective reward system rather than individual reward system are more likely to develop radically new products. This study also shows that the better are firms' R & D collaboration with suppliers and interfaces with customers, the higher is the possibility of radical product innovation.

• Journal of dental hygiene science
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• v.20 no.1
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• pp.44-50
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• 2020

Background: Smartphones are a modern necessity. While they are convenient to use, smartphones also have side effects such as addiction. This study assessed the relationship between smartphone use, a part of everyday life in modern society, and oral health. Methods: An analysis was conducted using 2017 Korea Youth Risk Behavior Web-based Survey data. The propensity score estimation algorithm used logistic regression and 1:1 matching algorithm using nearest-neighbor matching. After matching, a total of 15,032 participants were classified into two groups containing 7,516 teenagers each who did and did not use smartphones, respectively. Results: Comparison of oral health behaviors according to smartphone use revealed a statistically significant difference in the frequency of tooth brushing per day, use of oral hygiene products, intake of foods harmful to oral health, and experience of oral health education (p<0.05). The factors affecting oral pain experience of adolescents were examined. Compared to male participants, female participants had an odds ratio of 1.627 for oral pain (p<0.05). According to the household income level, compared to the group with higher income, the group with lower income showed higher oral pain experience (p<0.05). Oral pain experience was 1.601 times more frequent among teenagers using smartphones (p<0.05). Conclusion: The results of this study indicated that use of smartphones by adolescents affected their oral health. These findings indicate the need for improved oral health management through the use of effective school oral health programs and individual counseling by oral health professionals, promotion of information dissemination through public media, and development of prevention strategies.

• Journal of Digital Convergence
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• v.16 no.7
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• pp.493-509
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• 2018

This study was performed to compare the effects of health behaviors, dietary habits, and psychological health on metabolic syndrome (MS) between young adults living in one-person households (OPHs) and multiple-person households (MPHs). The data from the Korean National Health and Nutrition Examination Survey (KNHANES), which was conducted in 2014 and 2016 were used. The subjects were 2,682, who were 20 to 39 years old. The data were analyzed using complex sample Rao-Scott ${\chi}^2-tests$, t-tests, and multiple logistic regression using SPSS 23.0 software. Sex, age, obesity, and subjective health status were associated with MS in young adults living in either OPHs or MPHs. Breakfast consumption frequency, eating alone, food label use, stress, and depression were associated with MS only in young adults living in OPHs. Thus, these differentiated risk factors of MS should be considered, when health promotion strategies and interventions are planned for young adults living in OPHs. Also, further studies are needed to evaluate the effectiveness of the strategies or interventions.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.22 no.8
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• pp.89-95
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• 2008

This paper describes the checking results and some problems of guard lamps installed in the field. The guard lamp providing night security for people is installed outdoors and exposed to the natural factors causing secular ageing and the people's vandalism, etc., thus it is prone to get troubles in function. In fact, the guard lamps has been left without considering the fundamental measures in the legislative system in spite of the loss of lives due to the electric shock accidents repetitively taking place every year. This study arouses people's attention to the risk due to the lack of management and maintenance of the guard lamp by investigating the recent technology and the actual operating conditions and some problems and countermeasures were ultimately deduced. In this process, we reflected on the various opinions through fieldwork and had a couple of consultations with field staffs, manufacturers concerned and active officers with local autonomous entities.