• New & Renewable Energy
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• v.7 no.4
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• pp.10-17
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• 2011

Recently, electricity industry is facing high market uncertainty which has ever had and which increase risks in power market. In this study, we analyze risk factors such as discount rates, initial investment (overnight cost), plant factor, fuel cost, carbon price, etc, for the perspective of investor. For the analysis of risk factors, we used LCOE method. The results of this study show that renewable energy is more affected by plant factor and overnight cost than other risk factors. First, Renewable energy has higher proportion of overnight cost in the total investment than that of other technologies. Second, renewable energy is free of fuel cost and carbon price so plant factor is the most important factor, in other words, competitiveness of renewable energy depends on plant factor. Furthermore, we conducted economic feasibility of wind power and PV in domestic case study. The minimum requirement condition to get profitability is that plant factor 15% and overnight cost \6,000,000/kW and 26%, \2,200,000/kW for PV and Wind Power, respectively.

• Journal of Korean Public Health Nursing
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• v.28 no.3
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• pp.484-494
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• 2014

Purpose: The purpose of this study is to verify the direct influences of the risk factors of the family environment on the problem behaviors of early adolescents, and the indirect influences of the same by the mediation of ego resilience. Method: After random extraction of five elementary schools located in D metropolitan city, we conducted a survey of 5th and 6th-grade male and female students. For the analysis, we used data from the questionnaire results of 450 students. For the data analysis, we performed t-test of independent samples, one-way ANOVA, path analysis and Sobel test, utilizing SPSS/WIN 19.0 program. Result: The direct influence of the risk factors of the family environment on the problem behaviors of the early adolescents was 0.447, while the indirect influence by the mediation of ego resilience was 0.146. Conclusion: It was found that the risk factors of the family environment not only exert direct influences on the problem behaviors of early adolescents, they also have indirect influences on the problem behaviors of early adolescents by way of the mediation of ego resilience.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.15
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• pp.6353-6356
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• 2014

Background: The purpose of this study was to investigate and evaluate risk factors for lymph node metastases (LNM) in cases of endometrial cancer (EC). Materials and Methods: A retrospective single institution analysis of patients surgically staged for EC at Ankara Oncology Education and Research Hospital from 1996 to 2010 was performed. Roles of prognostic factors, such as age, histological type, grade, depth of myometrial invasion, cervical involvement, peritoneal cytology, and tumor size, in the prediction of LNM were evaluated. Fisher's exact test and logistic regression analysis were used to assess the effects of various factors on LNM. Results: LNM was observed in 22 out of 247 patients (8.9%) and was significantly more common in the presence of tumors of higher grade, deep myometrial invasion (DMI), cervical involvement, size >2cm, and with positive peritoneal cytology. Logistic regression analysis revealed that DMI remained the only independent risk factor for LNM. NPV, PPV, sensitivity, and specificity for satisfying LNM risk were 98.0, 19.5, 86.3, and 65.3%, respectively for DMI. Conclusions: The incidence of LNM is influenced independently by DMI. If data support a conclusion of DMI, LND should be seriously considered.

• Korean Journal of Veterinary Research
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• v.59 no.1
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• pp.25-31
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• 2019

The aim of this study was to determine predictive risk factors implicated in complications in dogs with esophageal foreign bodies. Medical records of 72 dogs diagnosed with esophageal foreign bodies by endoscopy were reviewed retrospectively. Factors analyzed included age; breed; gender; body weight, location, dimension, and type of foreign body; and duration of impaction. To identify risk factors associated with complications after foreign body ingestion, categorical variables were analyzed using the chisquare or Fisher's exact tests and multivariate analysis, as appropriate. Complications secondary to esophageal foreign body ingestion included megaesophagus, esophagitis, perforation, laceration, diverticulum, and pleuritis. Univariate analysis revealed that the location and duration of impaction after foreign body ingestion were associated with an increased risk of esophageal laceration and perforation. Multivariate analysis showed that age, duration of impaction, and foreign body dimension were significant independent risk factors associated with the development of complications in dogs with esophageal foreign bodies. In conclusion, these results showed that longer duration of impaction and larger foreign body dimensions may increase the risks of esophageal laceration, perforation, and plueritis in dogs.

• International Journal of Advanced Culture Technology
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• v.11 no.4
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• pp.449-455
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• 2023

The purpose of this study is to explore adolescent depression, increase understanding of social problems, and develop prevention and intervention strategies. As a research method, social big data was used to collect information related to 'youth depression', and related factors were identified through data mining and analysis of related rules. We used 'Sometrend Biz Tool' to collect and clean data from the web and then analyzed data in various languages. The study found that online articles about depression decreased during the school holidays (January to March), then increased from March to the end of June, and then decreased again from July. Therefore, it is important to establish a government-wide depression management monitoring system that can detect risk signs of adolescent depression in real time. In addition, regular stress relief and mental health education are needed during the semester, and measures must be prepared to deal with at-risk youth who share their depressed feelings in cyberspace. Results from these studies can be expected to provide important information in investigating and preventing youth depression and to contribute to policy development and intervention.

• Journal of Korean Biological Nursing Science
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• v.14 no.4
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• pp.282-290
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• 2012

Purpose: The purpose of this study was to identify the prevalence of hypertension and its risk factors among community dwelling aged 65 and over in South Korea. Methods: A total of 1,367 subjects from the 2010 Korean National Health and Nutrition Examination Survey (KNHANES) were selected. The data analysis was conducted by SPSS WIN 19.0 using descriptive statistics, ${\chi}^2$-test, and logistic regression analysis. Results: The prevalence of hypertension was found to be 47.70%. Logistic regression analysis shows that hypertension was more prevalent as people became older; in females; in elderly who were not employed as compared to those employed; elderly with diabetes, and obesity as compared to those without these health conditions; as elderly who performed more moderate intensity exercise. While, education, household income, high risk alcoholic drinking, smoking, stress perception, usual activity, and eating out behavior were not associated with prevalence of hypertension in this study. Conclusion: The finding of prevalence of hypertension and its risk factors is expected to promote the screening or prevention strategy for community dwelling aged 65 and over at risk of hypertension in Korea.

• Journal of Korean Biological Nursing Science
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• v.21 no.4
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• pp.300-307
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• 2019

Purpose: The purpose of this study was to provide basic data on the infection prevention management program, which is one of the infectious disease control program by identifying the prevalence and risk factors of latent tuberculosis infection (LTBI) in healthcare workers. Methods: We surveyed a total of 3,046 LTBI test results, including those of 2,269 existing staff and 777 new employees. An interferon-gamma release assay (IGRA) for the diagnosis of LTBI was performed using QuantiFERON^®-TB Gold In-Tube (QFT-IT). The risk factors of LTBI were analyzed using logistic regression analysis. Results: The overall prevalence of LTBI was 16.0% (487/3,046). The prevalence of LTBI in the existing staff was 17.9% (406/2,269) and the prevalence of LTBI in new employees was 10.4% (81/777). Multivariate logistic regression analysis revealed that the risk factors of latent tuberculosis infection among the existing staff were gender, age and work period wheres, the risk factor amongst the new employees depended on their age. Conclusion: The LTBI was not related to the type of occupation and work unit. Therefore, while establishing an infection control program for the prevention of tuberculosis infection at medical institurions, institutional heads and infection control experts should encompass a policy for all the employees.

• Research in Community and Public Health Nursing
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• v.16 no.4
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• pp.392-403
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• 2005

Purpose: This study was to evaluate the nutritional status of low-income elders in urban areas and factors affecting their nutritional risk. Methods: A cross-sectional analysis was conducted. The subjects were 300 elders selected from home visiting clients of DongJack Public Health Center. Data were collected using a questionnaire containing questions on socio-demographic characteristics. health behavior and disease. dietary pattern. Nutritional Screening Initiative. Geriatric Depression Scale and Barthel Index for ADL. Collected data were analyzed through descriptive statistics. $X^2-test$ and multiple regression analysis using SPSS. Results: Of the subjects, 63% had high nutritional risk, 21.3% moderate nutritional risk, and 15.7% good nutritional risk. NSI score was significantly different according to economic status, subjective health condition, medication, dental health, depression. regularity of diet and meal with family. Multiple regression analysis revealed that depression, subjective health condition, dental health and regularity of diet and meal with family explain 38.1% of nutritional risk. Conclusion: It is necessary to evaluate nutrition status and to control nutritional risk factors such as depression, dental health, regularity of diet and meal with family for improving the health of the low-income elderly.

• Proceedings of the Korea Water Resources Association Conference
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• 2012.05a
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• pp.467-467
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• 2012

As the features of recent flood are spatially concentrated, loss of life and property increase by the impact of climate change. In addition to this the public interest in water control information is increased and socially reasonable justification of water control policy is needed. It is necessary to estimate the flood risk in order to let people know the status of flood control and establish flood control policy. For accurate flood risk analysis, we should consider inter-relation between causal factors of flood damage. Hence, flood risk analysis should be applied to interdependence of the factors selected. The Bayesian networks are ideally suited to assist decision-making in situations where there is uncertainty in the data and where the variables are highly interlinked. In this research, to provide more proper water control information the flood risk analysis is performed using the Bayesian networks to handle uncertainty and dependency among 13 specific proxy variables.

• Journal of Korean society of Dental Hygiene
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• v.22 no.4
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• pp.249-257
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• 2022

Objectives: This study aimed to investigate the effect of the oral health status on risk factors for obstructive sleep apnea (OSA) using data from the 2019 National Health and Nutrition Examination Survey. Methods: Of a total of 2,422 persons, 1,295 and 1,127 were categorized into the control group (CG) and OSA risk group (OSARG), respectively. The effect of the oral health status on OSA risk factors was presented in Model 1 by performing a complex sample linear regression analysis. Results: Our findings showed that OSA risk factors decreased by 0.075 points when there were no speaking problems with demographic characteristics adjusted. In addition, when systemic diseases were adjusted for, OSA risk factors decreased to 0.074 points (p<0.05). Conclusions: Therefore, in order to reduce oral problems that affect OSA risk factors, dentists and dental hygienists should seek accurate recognition of OSA and effective oral care methods.