• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.30 no.2
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• pp.121-130
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• 2004

The purpose of this study was the long-term clinical and radiological evaluation of conservatively treated condylar fractures in children. This study was therefore undertaken to analyze the long-term effects of treating condylar fractures in children with conservative therapy in order to resolve the controversial question of whether complete remodeling occurs in this age or, if not, whether it is more likely to be associated with certain types of fracture or with other factors. This study was based on a series of 11 consecutive children and adolescents, aged between 3 and 15 years, with fractures of the condylar process who had been treated with conservative therapy at the Department of Oral & Maxillofacial surgery, Inha University Hospital, Inchon, Korea. All patients underwent a clinical investigation with special emphasis on Temporomandibular joint function and facial asymmetry. The patients also underwent a radiologic investigation, focusing on fracture remodeling and symmetry of mandible. It consists of panoramic radiograph, PA & lateral cephalogram and 3-D CT. No patient described impaired temporomandibular joint(TMJ) function or pain on the affected side. 2 of 8 (25%) unilateral and 1 bilateral fractures show slight facial asymmetry. Despite apparently excellent recovery of function, there were marked remodeling changes evident on the CT scan. Such changes are not usually evident on panoramic radiograph. Radiologic investigation showed incomplete remodelling(54.5%) and asymmetry of the mandible (27.3%) in some patients. Conservative treatment of condyle fracture in children results in satisfactory long-term outcome of jaw function despite a relative high frequency of radiologically noted aberrations.

• Advances in pediatric surgery
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• v.4 no.1
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• pp.34-38
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• 1998

Infantile hypertrophic pyloric stenosis(IHPS) is common in full-term babies, and relatively rare in prematures. The diagnosis of IHPS in premature infants may be obscured because of the lack of classic symptoms and signs and the absence of the standard criteria for ultrasonic diagnosis. The purpose of this study is to discover the clinical differences between premature and full-term infants with pyloric stenosis, and determine the appropriate diagnostic methods for early diagnosis in premature infants. The clinical records of 52 IHPS patients who had been operated upon from October, 1994 to April, 1997 were reviewed. The incidence of IHPS in premature infants was 25 %. The onset of symptom was 4.7 weeks of age in premature, and 2.9 weeks in full-term babies. Diagnosis was established by typical symptoms. signs. and diagnostic imaging studies. In two premature infants, diagnosis was confirmed by upper gastrointestinal(GI) series, because ultrasonography did not meet the diagnostic criteria. Two premature infants initially diagnosed as gastroesophageal reflux by esophagography. were found to have IHPS by upper GI series. For the diagnosis of IHPS, a new set of criteria for premature babies has to be developed.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.5 no.1
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• pp.19-44
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• 2010

This study intend to analyze effect on a change mental feature of founder received entrepreneurship short-term education called the successful foundation package. In other words, what kind of change the mental feature of founder before and after entrepreneurship education. The founder of the psychological characteristics include the locus of control, risk-taking propensity, need for achievement, ambiguity tolerance and specially new psychological trait, that is, creativity. The result of paired T-test and ANCOVA on pre-founders who received Entrepreneurship short-term education which called successful business start-up package is that need for achievement, ambiguity tolerance and creativity among pre-founders' psychological characteristics are enhanced by Entrepreneurship short-term education. However ANCOVA shows that there are no psychological characteristics changes according to age, education, the number of Entrepreneurship education.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.33 no.3
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• pp.909-916
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• 2013

Concrete containing lightly burnt MgO has long term expansibility. It also could compensate for the thermal shrinkage of mass concrete, because the hydration of MgO proceeds at a slow pace to long-term age. Thus, lightly burnt MgO has been applied to the construction of mass concrete such as dams. Recently, the expansion characteristics of MgO concrete with fly ash that could be applied to mass concrete for the reduction of hydration heat have been studied and however, limited studies on its durability. This study investigates the long-term durability characteristics of fly ash concrete with lightly burnt MgO. The durability tests on carbonation, freezing-thawing, diffusion of chloride, and resistance to sulfate attack were carried out for MgO concrete with curing for 360 days in submerged condition with different temperature of 20 and $50^{\circ}C$. The results reveal that MgO concrete shows a greater resistance of carbonation, diffusion of chloride, and resistance to sulfate attack. On the other hand the resistance of freezing-thawing was little influenced by MgO powder.

• Journal of Korean Foot and Ankle Society
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• v.13 no.1
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• pp.40-45
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• 2009

Purpose: End-stage ankle arthritis is frequently combined with ankle-hindfoot deformity or ankle instability and therefore additional surgical procedures are often required when performing total ankle arthroplasty. We report the short term clinical and radiographic results of the total ankle arthroplasty with/without the combined adjunctive surgical procedures. Materials and Methods: The study is based on the 17 ankles (16 patients) of end-stage ankle arthritis that were treated with $HINTEGRA^{(R)}$ Total ankle prosthesis (Newdeal, Lyons, France) total ankle arthroplasty (TAA) from 2004 to 2007 with at least 12 months follow-up. The combined adjunctive procedures as well as the VAS pain score, AOFAS score, radiographic measurements and patient satisfactions were evaluated. Results: Average follow-up period was 29 months (13${\sim}$55 months), and the age was average 62 years (39${\sim}$75 years) old. Among total of 17 ankles, varus deformity and lateral ankle instability were found in 4 cases and 3 cases respectively. Twenty additional procedures such as Achilles triple hemisection (9), calcaneal displacement osteotomy (4) and lateral ankle ligament reconstruction (3) were performed in adjunct to TAA in 13 ankles. VAS pain score improved from preoperative average 8.4 (7${\sim}$10) to 2.0 (0${\sim}$5) and the AOFAS functional score improved from 41.8 points (13${\sim}$71 points) to 90.6 (77${\sim}$100 points) at final follow-up. Ninety-four percent of the patients were satisfied with the surgery. Conclusion: We confirmed that many adjunctive combined surgical procedures are often necessary in addressing the end-stage ankle arthritis (74%) with total ankle arthroplasty. We also achieved quite good clinical and radiographic short term results, although the long term follow-up study with larger number of cases are needed in the future.

• The Korean Journal of Physiology and Pharmacology
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• v.14 no.5
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• pp.337-343
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• 2010

Long-term potentiation (LTP) and long-term depression (LTD) have both been studied as mechanisms of ocular dominance plasticity in the rat visual cortex. In a previous study, we suggested that a developmental increase in serotonin [5-hydroxytryptamine (5-HT)] might be involved in the decline of LTP, since 5-HT inhibited its induction. In the present study, to further understand the role of 5-HT in a developmental decrease in plasticity, we investigated the effect of 5-HT on the induction of LTD in the pathway from layer 4 to layer 2/3. LTD was inhibited by 5-HT ($10{\mu}M$) in 5-week-old rats. The inhibitory effect was mediated by activation of 5-$HT_2$ receptors. Since 5-HT also regulates the development of visual cortical circuits, we also investigated the role of 5-HT on the development of inhibition. The development of inhibition was retarded by chronic (2 weeks) depletion of endogenous 5-HT in 5-week-old rats, in which LTD was reinstated. These results suggest that 5-HT regulates the induction of LTD directly via activation of 5-$HT_2$ receptors and indirectly by regulating cortical development. Thus, the present study provides significant insight into the roles of 5-HT on the development of visual cortical circuits and on the age-dependent decline of long-term synaptic plasticity.

• Health Policy and Management
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• v.30 no.1
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• pp.72-81
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• 2020

Background: The out-of-pocket maximum is one of the distinctive healthcare systems which sets a ceiling on co-payment in order to reduce the burden of households from the unpredictable medical expenditure. However, this leads to an increase in the demand for healthcare services especially in long-term care hospitals (LTCHs) in Korea. Methods: This study analyzed the influence factor of medical service overuse of 165,592 inpatients in LTCHs which out-of-pocket maximum is applied, by utilizing data from the National Health Insurance Service (2016). Based on Anderson Model, the medical service overuse, as a dependent variable, was defined as long-stay admission more than 180 days at the LTCHs. Independent variable was comprised of predisposing factors (gender, age), enabling factors (income level, types of out-of-pocket maximum) and need factors (illness level, patient use of tertiary hospital). Results: The most powerful factor of medical service overuse in LTCHs was availability of pre-payment for the out-of-maximum (odds ratio [OR], 191.66; p<0.001). This tendency was found in high income level status (p<0.001). Furthermore, mild inpatients (OR, 1.50; p<0.001) which had no experience with the tertiary hospitals (OR, 2.06; p<0.001) were more relevant to the medical service overuse in LTCHs, compared to the severe inpatients. Conclusion: It is suggested that a separate standard of out-of pocket maximum with regards to LTCHs is required to secure the beneficial functions of long-term hospitals and prevent unnecessary financial leakage to achieve sustainable and financially sound National Health Insurance.

• Journal of Digital Convergence
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• v.16 no.10
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• pp.69-78
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• 2018

This The purpose of this study is to find policy implications through the analysis of the operational cases and establishment performance of the Leading University for startups. The method of the study was statistical analysis using the data generated during the operation of the Leading University for startups. The results of the study show that there is a difference between short-term performance by gender and age. Second, there was no correlation of the short-term performance with the evaluation, but a negative correlation was observed with the detailed document evaluation part. Third, there is no difference in short-term performance depending on the mentor. Strategic utilization is to reduce the reflection of the founder's short-term performance in the appraisal of the Leading Universities. And there is a need to improve the evaluation method for the applicant. The limitations of this study are that it is inadequate to be an empirical study through statistical analysis. And statistical analysis shows that there are not enough cases. Therefore, I will make an empirical study which will expand the number of cases by including cases of several universities in the future.

• Journal of Korean Public Health Nursing
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• v.29 no.3
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• pp.551-564
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• 2015

Purpose: Th study is to explore the working conditions and factors related to job satisfaction of nurses in long-term care facilities for the elderly. Methods: A total of 127 nurses working long-term care facilities, from June to November 2014, completed questionnaires. Face to face interviews were conducted. The questionnaire consists of a total of 32 questions, including 5 questions related to general characteristics, 15 questions related to working conditions, and 12 questions related to job satisfaction(likert scale of 1 to 5). Results: The majority of nurses were employed in institutional care facilities, in urban area, and in privately owned facilities. On average, employed nurses worked 170.7 hours per month. Only 40.9% of them got more than two million won for their monthly salary. They were satisfied with the nature and worth of their work and the workplace relationship, but not with their wages and promotion opportunity 40.2% of nurses reported satisfaction with job. In multiple logistic regression analysis, age was a statistically significant influencing factor on general job satisfaction. Conclusion: The findings suggest that policies must be to improve nurses' working conditions, for wages, and to support them with education and training for skills development.

• Journal of Family Resource Management and Policy Review
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• v.21 no.3
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• pp.121-139
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• 2017

This study aimed to explore the moderating effect of social support resources on the life satisfaction and caregiving burden of family caregivers taking care of the elderly in long-term care services. The study participants were selected from among the family caregivers utilizing 30 home care centers in Seoul, Korea. Of the candidates who agreed to participate in the study, 250 caregivers who had supported the elderly at home for at least 6 months were selected. The data collected were analyzed using SPSS ver. 21.0. The study findings were as follows. First, the whole family caregivers' caregiving burden of family caregivers was found to be slightly higher than the median value. More specifically, the physical burden was the heaviest, followed by the family relationship burden, the social activity burden, the emotional burden, and the financial burden. Social support resources and life satisfaction were found to be a little bit higher than the median value. Second, the variables that statistically significantly increased life satisfaction, starting with the strongest effect, were a lower psycho emotional burden, greater informational support resources, a lower economical burden, greater emotional support, a younger caregiver age, a higher monthly income, and a shorter care period. Third, informational support resources were found to have a moderating effect on the relationship between the support burden and life satisfaction. The more the participants used the informational support resource subcategory of the social support resources, the narrower the life satisfaction decrease, even though the caregivers felt a support burden. Informational support resources appear to have a statistically significant buffering effect.