• 응용통계연구
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• 제28권4호
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• pp.703-719
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• 2015

본 논문은 평균회귀 2요인 사망률 모형에 코호트 효과를 반영한 개선된 확률론적 사망률 모형을 제시한다. 한국 남자의 사망률 자료를 바탕으로 가중평균최소제곱법과 메트로폴리스 알고리듬을 이용하여 사망률 모형을 추정한 결과 코호트 효과를 반영하는 것이 모형 적합도를 향상시킴을 발견하였다. 국민연금공단과 같은 연금사업자가 자신의 장수위험을 금융시장에 순차적으로 전가하는 수단으로서 옵션방식 이자지급 장수채권의 활용을 제안하고 발행채권의 가격 산출방법을 제시하는 것이 본 논문이 기여하는 점이다. 특히 생존지수에 의해 이자지급 현금흐름이 결정되는 장수채권 가격산출을 위하여 코호트 효과가 매우 중요한 요소임을 강조하였다.

• 한국직업건강간호학회지
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• 제29권3호
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• pp.173-183
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• 2020

Purpose: The purpose of this study was to identify factors associated with the mental health-related quality of life (MHQoL) of Korean workers. Methods: This was a cross-sectional study of 192 Korean pay workers who worked in the Daegu and Gyeongbuk Province, Korea. Data were collected from May 15 to July 2, 2019, through selfreported questionnaires. The survey had a total of 87 questions including individual, organizational, and psychosocial factors. MHQoL was measured using short form-36 version 1. Data were divided into four domains of MHQoL and analyzed using a hierarchical linear regression model. Results: From the hierarchical linear regression analysis, when the psychosocial factors were included in the regression model, the R² change in the four domains of MHQoL increased significantly by 19~47%. A common predicting factor associated with the four domains of MHQoL was identified as perceived stress symptoms. Other factors affecting MHQoL showed slight differences in each domain. Conclusion: Based on the study results, it is necessary to monitor the psychosocial symptoms to improve MHQoL of Korean workers. Considering each factor affecting the four areas of MHQoL, workplace-based interventions to improve MHQoL should be provided to workers.

• 한국학교ㆍ지역보건교육학회지
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• 제16권2호
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• pp.115-130
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• 2015

Objectives: This study aimed to review the relationship between parenting daily hassles (PDHs), parenting burden and maltreatment as perceived by Korean and Japanese mothers raising children. In addition, the influence of parenting support, efficiency and satisfaction on child maltreatment were also reviewed. Methods: Data were gathered through self-administered questionnaires given to the mothers using the childcare center in both countries. As for the final procedure, 820 Korea and 700 Japan mothers were statistically processed, and data were analyed through factor analysis and path analysis. Result: The results showed that in both countries, parenting burden caused by PDHs significantly affected physical and mental maltreatment. parenting efficiency and satisfaction as a buffering factor could inhibit mental maltreatment. However, among buffering factors, Korean parenting mothers chose parenting efficiency and Japanese parenting mothers did parenting satisfaction. Conclusions: Based on the findings, it is needed parenting mothers are offered on opportunity to take health education programs and to understand their child's behaviors and learn parent's roles of parenting. In addition, local community support is desired.

• 한국패션뷰티학회지
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• 제5권1호
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• pp.24-33
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• 2007

This study was undertaken to find out how much influence eating habits and food preferences have on basic skin types, namely dry skin, normal skin, oily skin, and combination skin, as well as troubled skin, such as acne skin, sensitive skin, pigment disorder skin and unbalanced oil and moisture skin. The aim of this study was to help establish good eating habits and to reform food preferences in order to maintain healthy skin. For this study, a suey on the eating habits and food preferences of 206 college women in the metropolitan area was conducted. Statistics Program SPSS (ver130.0) was used to analyze the results of the material obtained from the survey. The survey revealed that participants with basic skin types ate a variety of foods, enjoy soft drinks, juice and supplementary food, while those with troubled skin types had daily breakfast and substitute snacks for meals. The survey also showed that alcohol is the dangerous factor for the cause of both sensitive skin and pigment disorder skin. And it showed that various nutrition intake is the main factor for unbalanced oil and moisture skin.

• 한국환경농학회지
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• 제28권4호
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• pp.453-461
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• 2009

Killifish (Oryzias latipes) were exposed to an organophosphate pesticide, pirimiphos-methyl, in a flow-through system to determine the bioconcentration factor (BCF) following GLP (Good Laboratory Practice). This study was conducted at two different concentrations (1 and $10\;{\mu}$g/L) of $^{14}C$-labeled pirimiphos-methyl for 28 days uptake and 14 days depuration according to the OECD 305 test guideline. The $BCF_{ss}$ for total radioactive residues in whole fish were 1,251 and 1,277 for low and high concentrations, respectively. The $BCF_k$ based on the uptake and depuration rate constants were 1,200 for both low and high concentrations. During the depuration phase, the accumulated test substance was rapidly depurated from fish. Greater than 95% of the residue at steady-state was depurated after 2 days. Although the measured BCF values were high, pirimiphos-methyl could be evaluated as a low risk from bioaccumulation by aquatic organisms due to the short depuration period and low amount of bound residue (1.5%). We suggest that in evaluating bioaccumulation, not only the BCF should be considered, but also depuration time and bound residue in aquatic organisms give an indication of the potential environmental risks.

• 무역상무연구
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• 제49권
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• pp.89-109
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• 2011

Among various export financing, forfaitng and factoring give a comfort to exporters as those special financing schemes are extended to them on a without recourse basis. This is good for the exporters in terms of financing and risk cover of buyer or LC issuing banks. To enjoy this benefit, the SME exporters should, however, know the risks involved in sales contract. For example, if the export and importer set Korean law as governing law in the sales contract especially for open account exports, the exporter's receivables might be not welcome by factors according to provisions of Korean Conflict Law and it's application. Those regulations tell that the factor's position would be unstable when the sales contact limit exporter's assignment of receivables to the factor when the sales contract is subject to Korean law. Also the exporters should know related regulation of importer which might affect the assignment of receivables as well. This paper suggests the Korean exporters take internationally recognized agreement/convention such as UNI|DROIT Convention on International Factoring, UN Convention on the Assignment of Receivables in International Trade.

• 대한한의학회지
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• 제24권4호
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• pp.113-119
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• 2003

The association between apolipoprotein E (apo E) gene polymorphism and ischemic cerebrovascular disease (ICVD) has been controversial. These controversies may be due to inaccurate classification of patients and ethnic differences. We investigated the association between apo E genotypes and ICVD patients by case-control study in a Korean population. The association between apo E polymorphism and ICVD was examined in 121 patients with ICVD and 132 controls without ICVD. The E3/E4 phenotype was more frequent in control subjects (23.8％) than in patients (13.0％) (p<0.05). The E2/E3 phenotype was more frequent in patients (14.8％) than in control subjects (10.8％), but the difference was not statistically significant (p>0.05). These results suggest that the E4 allele may be a protective factor against early vascular morbidity, and the E2 allele may be a risk factor for cerebrovascular morbidity.

• Advances in environmental research
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• 제1권4호
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• pp.277-288
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• 2012

This study investigated exposure to air pollutants in rooms in low-income houses at Shomolu (R1), Mafoluku (R2) and Mushin (R3) in Lagos state. The concentrations of most measured exceeded limits of Illinois Department of Public Health (IDPH) for indoor air quality. Air quality index (AQI) in rooms studied was unhealthy for sensitive people in terms of CO, unhealthy in terms of $SO_2$ and very unhealthy in terms of $NO_2$ while moderate air quality was obtained in terms of $PM_{10}$ in most rooms. High concentrations of carbontetrachloride, formaldehyde and xylene measured could have been responsible for some of the health complaints of the occupants. Factor analysis shows that cooking with kerosene, use of gasoline generator and insecticide were the major contributors to indoor air pollution in these rooms. Therefore, there is need to urgently tackle poverty as all affected by these pollutants were poor who live in substandard houses without kitchens.

• Asian Pacific Journal of Cancer Prevention
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• 제15권21호
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• pp.9271-9275
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• 2014

Background: Schistosomiasis is an infectious disease that affects more than 230 million people worldwide, according to conservative estimates. Some studies published from China and Japan reported that schistosomiasis is a risk factor for colorectal cancer in Asia where the infective species is S. japonicum. Hoqwever, there have been only few reports of prognosis of patients with schistosomal rectal cancer SRC. Objectives: This study aimed to analyze differences in prognosis between SRC and non-schistosomal rectal cancer(NSRC) with current treatments. Materials and Methods: A retrospective review of 30 patients with schistosomal rectal cancer who underwent laparoscopic total mesorectal excision operation (TME) was performed. For each patient with schistosomal rectal cancer, a control group who underwent laparoscopic TME with non-schistosomal rectal cancer was matched for age, gender and tumor stage, resulting in 60 cases and controls. Results: Univariate analysis showed pathologic N stage (P=0.006) and pathologic TNM stage (P=0.047) statistically significantly correlated with disease-free survival (DFS). Pathologic N stage (P=0.014), pathologic TNM stage (P=0.002), and with/without schistosomiasis (P=0.026) were statistically significantly correlated with overall survival (OS). Schistosomiasis was the only independent prognostic factor for DFS and OS in multivariate analysis. Conclusions: The prognosis of patients with schistosomal rectal cancer is poorer than with non-schistosomal rectal cancer.

• Asian Pacific Journal of Cancer Prevention
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• 제16권18호
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• pp.8085-8091
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• 2016

Human papillomavirus is a virus that is distributed worldwide, and persistent infection with high-risk genotypes (HR-HPV) is considered the most important factor for the development of squamous cell cervical carcinoma (SCC). However, by itself, it is not sufficient, and other factors may contribute to the onset and progression of lesions. For example, infection with other sexually transmitted diseases such as human immunodeficiency virus (HIV) may be a factor. Previous studies have shown the relationship between HPV infection and SCC development among HIV-infected women in many regions of the world, with great emphasis on low- and middle-income countries (LMICs). Brazil is considered a LMIC and has great disparities across different regions. The purpose of this review was to highlight the current knowledge about HPV infection and cervical abnormalities in HIV+ women in Brazil because this country is an ideal setting to evaluate HIV impact on SCC development and serves as model of LMICs and low-resource settings.