• KSCE Journal of Civil and Environmental Engineering Research
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• v.35 no.1
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• pp.217-227
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• 2015

This study conducted case studies in order to suggest the improvement of GDP (Gross Domestic Product) deflator method which is adopted on calculating fluctuation rate on BTL (Build-Transfer-Lease) sewer rehabilitation projects in Jeju. As a result, because GDP deflator method calculates fluctuation rate by each quarterly, the fluctuation rate of GDP deflator method is higher than it of index adjustment rate method. And GDP deflator method cannot reflect real price because of applying fixed index in whole construction cost for calculating fluctuation rate. Especially, the notification day - the base point influences fluctuation rate and fluctuation amount strongly in GDP deflator method.

• Journal of the Ergonomics Society of Korea
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• v.24 no.2
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• pp.65-70
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• 2005

Evaluation of repetitiveness for upper extremity intensive tasks is essential to determine the level of risk for upper extremity musculoskeletal disorders at the workplace. However, experimental data available to establish the acceptable levels of repetitiveness for various postures and forces is lacking. The present study examined the maximum acceptable frequencies(MAFs; motions/min.) of shoulder, elbow, wrist, and index finger motions at different forces(1kgf and 4kgf for shoulder, elbow, and wrist; 0.25kgf and 1 kgf for index finger) in sitting. Seventeen right-handed males in 20s without having any history musculoskeletal disorders participated in the MAF experiment. The participants determined their MAFs for the upper extremity motions by using the self-adjustment method and their work pulse(increase in heart rate; beats/min.) and rating of perceived exertion(RPE) were measured when working at MAF. The MAFs of elbow, wrist, and index finger motions for each force level were about 2, 3, and 6 times the corresponding MAF(9 at the high force and 24 at the low force) of shoulder motion and the MAFs at the low force increased about 2 times those at the high force. The work pulses of elbow, wrist, and index finger motions for each force level were 70%, 50%, and 30% of the corresponding work pulse(17 at the high force and 12 at the low force) of shoulder motion and the work pulses at the low force were about 70 % of those at the high force. Lastly, the RPEs of the upper extremity regions were about level 3(moderate) or below.

• Journal of the Korean Dietetic Association
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• v.26 no.1
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• pp.42-53
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• 2020

The relationship of abdominal obesity ("AO") with co-morbidity and mortality is well established. This study assessed the factors associated with AO, which was defined as a waist circumference ≥90 cm for men and ≥85 cm for women, in the group aged over 65 years. A total of 1,435 subjects were analyzed among the participants of the 2014 Korean National Health and Nutrition Examination Survey. Statistical methods for a complex sample were applied by using a SPSS program (ver. 25.0). AO was more frequently found in females. The results of the logistic regression analysis showed that heavy drinking (OR: 1.53), no weight training (OR: 0.68), stressful mental status (OR: 0.61), bad health-related quality of life (by EQ_5D, OR: 1.45), hypertension (OR: 2.18), prediabetes (OR: 1.94), diabetes (OR: 1.63), low HDL-cholesterol (OR: 1.86), anemia (OR: 0.55), and heavy energy intake (OR: 1.41) were significantly related with the prevalence of AO after adjustment for gender. Heavy drinking (OR: 1.89), bad self-rating of health status (OR: 1.72), low HDL-cholesterol (OR: 1.85), heavy energy intake (OR: 1.79), low intake of riboflavin (OR: 1.60) were still significantly related with the prevalence of AO after adjustment for gender and body mass index (BMI), this study suggests that certain characteristics of health habits, mental health status, and chronic diseases may be associated with AO. This study did not establish the existence of relationship between nutrient intakes, except for riboflavin, and risk of AO, but this study suggests that prospective research is needed to establish causal connections among those factors.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.3 no.1
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• pp.106-116
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• 1992

This study were purposed to find out parental perceptions of child adjustment associated with parenting stress with autistic children and differences of parenting stress between autistic children's parents and normal children's. Subjects were 27 autistic children's parents, 28 normal children's, 4 teachers with autistic children. 'Scales were Parenting Stress Index(PSI), Eyberg Child Behavior Index(ECBI), Childhood Autism Rating Scale(CARS), Social Maturing Scale(SMS). The results of this study were as follows. 1) In total parenting stress, parents with autistic children had significantly higher scores than normal's. 2) In child domain of parenting stress, fathers with autistic children had significantly higher than mothers on the other components except Mood and Demandingness. 3) In parent domain of parenting stress, parents with autistic children had significantly higher than nomal's on Restrict of role, Attachment, Sense of Competence. All mothers of normal and autistic children had significantly higher than fathers on the other components except Repression. 4) In parenting perceptions associated with parenting stress level of autistic children's parents. Low level group perceived their children as higher adaptibility than teacher's evaluation and high level group perceived them as equal to teacher's.

• Korean Journal of Psychosomatic Medicine
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• v.28 no.2
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• pp.168-176
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• 2020

Objectives : Loneliness and poor sleep quality are common phenomena in old age and are associated with negative physical and mental health. However, little is known regarding the relation between loneliness and sleep quality. The aim of this study was to examine the association of loneliness and sleep quality among the elderly living alone. Methods : This is a cross-sectional study that enrolled 1,090 subjects who are the community-residing elderly living alone. Sociodemographic status, medical condition, cognition, mood disorder, sleep quality and levels of loneliness were collected using a self-administered questionnaire and a specific semi-structured interview conducted by trained nurses. Descriptive statistics were used to analyze data regarding sociodemographic variable and loneliness. Univariate and Multivariate regression analyses were applied to examine the association between loneliness and sleep quality after adjustment for multiple confounding variables. Results : The Pittsburgh Sleep Quality Index (PSQI) mean score of "lonely group" (9.2±4.2) was significantly higher than that of "not lonely group" (7.3±3.7) (student-t test, p<0.001). Loneliness was significantly associated with PSQI (standardized β=0.065, p=0.025), sleep disturbance (standardized β=0.086, p=0.005), use of sleep medication (standardized β=0.065, p=0.034) after adjustment for possible confounding variables including sex and mood disorder. Conclusions : Loneliness was associated with sleep disturbance and this finding implied negative impact of loneliness on sleep quality of older adults. Public health promotion efforts to reduce loneliness may improve sleep quality and mental health in the elderly living alone.

• The Korean Journal of Pain
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• v.36 no.4
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• pp.450-457
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• 2023

Background: Genicular nerve neurolysis with phenol and radiofrequency ablation (RFA) are two interventional techniques for treating chronic refractory knee osteoarthritis (KOA) pain. This study aimed to compare the efficacy and adverse effects of both techniques. Methods: Sixty-four patients responding to diagnostic blockade of the superior medial, superior lateral, and inferior medial genicular nerve under ultrasound guidance were randomly divided into two groups: Group P (2 mL phenol for each genicular nerve) and Group R (RFA 80℃ for 60 seconds for each genicular nerve). The numeric rating scale (NRS) and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) were used to evaluate the effectiveness of the interventions. Results: RFA and phenol neurolysis of the genicular nerves provided effective analgesia within groups at 1 week, 1 month, and 3 months compared to baseline. There was no significant difference between the groups in terms of NRS and WOMAC scores at all measurement times. At the 3rd month follow-up, 50% or more pain relief was observed in 53.1% of patients in Group P and 50% of patients in Group R. The rate of transient paresthesia was 34.4% in Group P and 6.3% in Group R, and this was significantly higher in Group P. Conclusions: Neurolysis of the genicular nerves with both RFA and phenol is effective in the management of KOA pain. Phenol may be a good alternative to RFA. Further studies are needed on issues such as dose adjustment to prevent transient paresthesia response.