• Journal of Preventive Medicine and Public Health
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• 제49권5호
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• pp.260-274
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• 2016

Objectives: Previous epidemiological studies about oxidative stress and depression are limited by hospital-based case-control design, single-time measurements of oxidative stress biomarkers, and the small number of study participants. Therefore, in this study, we analyzed the association between biomarker of oxidative stress and depressive symptom scores using repeatedly measured panel data from a community-dwelling elderly population. Methods: From 2008 to 2010, a total of 478 elderly participants residing in Seoul, Korea, were evaluated three times. Participants underwent the Korean version of the Short Form Generic Depression Scale (SGDS-K) test for screening depression, and urinary malondialdehyde (MDA) levels were measured as an oxidative stress biomarker. We used a generalized estimating equation with a compound symmetry covariance structure to estimate the effects of oxidative stress on depressive symptom scores. Results: A two-fold increase in urinary MDA concentration was significantly associated with a 33.88% (95% confidence interval [CI], 21.59% to 47.42%) increase in total SGDS-K scores. In subgroup analyses by gender, a two-fold increase in urinary MDA concentration was significantly associated with increased SGDS-K scores in both men and women (men: 30.88%; 95% CI, 10.24% to 55.37%; women: 34.77%; 95% CI, 20.09% to 51.25%). In bivariate analysis after an SGDS-K score ${\geq}8$ was defined as depression, the third and the fourth urinary MDA quartiles showed a significantly increased odds ratio(OR) of depression compared to the lowest urinary MDA quartile (third quartile OR, 6.51; 95% CI, 1.77 to 24.00; fourth quartile OR, 7.11; 95% CI, 1.99 to 25.42). Conclusions: Our study suggests a significant association between oxidative stress and depressive symptoms in the elderly population.

• 융합보안논문지
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• 제15권1호
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• pp.11-18
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• 2015

우리나라는 인적자본을 바탕으로 경제성장과 민주주의를 동시에 성취한 국가이다. 하지만 고령화로 인해 인적자본인 노동자도 고령화 되고 있다. 이러한 고령화는 우리나라 경제, 사회, 문화에 이르기 까지 영향을 미치고 있다. 장기 지속적인 취업자 수 증가와 노인들의 경비업에 대한 선호도등에 의해민간경비 노동시장에서 고령자들이 차지하는 비율은 지속적으로 증가할 것으로 보인다. 이러한 노동시장의 변화로 여러 가지 문제점들이 야기 될 것이다. 법 제도 적인 문제, 노동능력의 변화, 범죄의 증가 등이다. 이러한 잠재적인 문제점들을 방지하기 위해서는, 먼저 법 제도적으로 고령자 민간경비원의 최대근무 시간의 한계를 정하고 휴게시간을 보장해야한다. 그리고 고령자들의 급격히 저하되는 체력적 노동능력을 보완하기 위해 업무에 맞게 체계화된 교육을 통하여 노동능력의 저하를 줄여야 한다. 마지막으로 범죄의 증가는 직무교육시간을 늘리고 범죄사례를 통해 경각심을 일깨워 줄 수 있는 교육 내용을 통해 범죄를 줄이도록 해야 한다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권24호
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• pp.10779-10782
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• 2015

Purpose: Analysis of descriptive epidemiological characteristics of pancreatic cancer in Vojvodina, Serbia. Materials and Methods: The study covers population of Vojvodina in the period from 2000 to 2009. The method used for data processing was the descriptive. The data, referring to a specified period of time, were analyzed from chronological and demographic aspects and according to histological diagnosis. Results: In the period from 2000 to 2009, there were 2,108 registered cases of pancreatic cancer of which 1,886 had a fatal outcome. Standardized incidence rates varied between 5.7 and 9.1 per 100,000 population in males and between 4.2 and 5.3 in females. Linear incidence trends in males in the specified period of time, based on crude (r=0.7883, p<0.05) and standardized (r=0,6373, p<0,05) incidence rates, demonstrated increase. Annual percent increase in the crude incidence rate was 4.5% in males, and 2.8% in females. Age-standardized mortality rates varied between 5.2 and 7.5 per 100,000 population in males and 3.6 and 4.7 in females. Linear mortality trends in males in the specified period of time, based on crude (r=0.8795, p<0.05) and standardized (r=0.7669, p<0.05) mortality rates, also demonstrated annual percent increase. Conclusions: Data analysis shows unfavorable onco-epidemiological situation related to pancreatic cancer in Vojvodina, in aspects of both incidence and mortality. Absence of primary and secondary prevention does not allow medical institutions to successfully fight against this disease.

• Clinical and Experimental Vaccine Research
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• 제13권1호
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• pp.35-41
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• 2024

Purpose: The effectiveness of coronavirus disease 2019 (COVID-19) vaccination schemes and the combination of vaccines of various platforms for administering booster doses is still being studied since it will depend on the population's response to vaccines. We aimed to evaluate the safety, protection, and immunogenicity of the Salvadorean population's third dose booster COVID-19 vaccine and the potential benefit of homologous vs. heterologous regimens. Materials and Methods: This is an analytical observational cohort study in a population aged 18 to 65 years that was primarily vaccinated with AstraZeneca, Sinovac, or Pfizer/BioNTech. Volunteers were recruited (n=223) and followed up for 3 months after receiving the 3rd vaccine (BNT162b2) as a booster. Adverse reactions were monitored, serum anti-spike immunoglobulin G (IgG) was assessed by chemiluminescence, and a polymerase chain reaction was carried out when subjects developed clinical signs. Results: The cohorts finally included 199 participants, and we observed only mild adverse effects in all cohorts. A significant increase in specific IgG levels was found after the booster dose in all cohorts. The heterologous scheme with Sinovac showed the greatest increase in antibody titer, and a decrease was observed in all participants after 3 months. During the follow-up period, 30 participants showed symptomatology compatible with COVID-19, but only four were laboratory-confirmed and they showed mild clinical signs. Conclusion: These findings indicate that the booster doses used were safe and promoted an immediate increase in immunogenicity, which decreased over time. The heterologous regimen showed stronger immunogenicity compared to the messenger RNA-based homologous scheme.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2008년도 학술발표회 논문집
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• pp.33-39
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• 2008

Most New Zealanders reside in coastal regions and four of the larger cities are situated on active floodplains. There have been many recent storm events with rainfall AEPs of 1/150 or rarer and there have been recent flood-related disasters. Insurance claim statistics indicate that the frequency of floods is increasing. Such statistics are alarming local government authorities, insurance companies and populations in low-lying areas. The underlying physical and hydrologic causes of the flood disasters are investigated. It is found that the present numbers of rare rainfall events are not unexpected and there does not appear to be any significant trend evident in the occurrence of river floods. What is revealed is that the river floods appear clustered in certain decades. The clusters do not occur at the same times in different parts of the county. Recently there have been more floods in the north of New Zealand which is where more of the population lives. Also, the increase in population has seen more houses built in locations prone to flooding. Thus the increase in flood-related insurance claims is attributed to more people getting in the way of floods, rather than an increase in the number of floods that have occurred.

• 한국주거학회논문집
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• 제21권3호
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• pp.125-134
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• 2010

The purpose of this study is to estimate the housing demands in order to address a suitable housing policy for a metropolitan city of Daegu in South Korea. Although the population of Daegu declines, a number of households increase since a number of people per households decrease. Currently a household with four people is a main housing type, however it is expected that a household with one or two increase. In 2017, a household with one will be dominant. Estimating housing sizes and their demand, the households below $60\;m^2$ gradually decline while those over $85\;m^2$ is expected to rise. Nevertheless, the demands for the house below $60\;m^2$ in its size increase at 39.2 per cent. Currently a house with $60\;m^2$ is being constructed. In particular, that of $85\;m^2$ gradually increases. The current trends may result in the widening gaps between the household demand and supply of Daegu. Therefore, it is recommended that relevant local authorities and developers should consider providing various house sizes by taking the current housing demand of Daegu into account.

• The Journal of Asian Finance, Economics and Business
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• 제7권10호
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• pp.999-1006
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• 2020

This study provides an understanding of the role of job satisfaction as a mediator of compensation and workplace environments for the organizational commitment of employees in the public sector. This study used a structural model using path analysis. The population and sample in this study were all employees at the Population and Civil Registry Office of one of the districts in Indonesia. The sampling technique used was total sampling, due to the considerably smaller amount of the sample size. This study found that compensation and workplace environment could explain job satisfaction variables with a 93.8% confidence level and simultaneously compensation, workplace environment, and job satisfaction that could explain organizational commitment with a variable of 97.4%. This findings also shows that the manifest bonus variable on the latent compensation variable is one of the main indicators that needs to improve to increase job satisfaction and organizational commitment. One of the important things which needs to be done is to increase compensation. The first thing which needs to be done is to increase the bonus. Furthermore, to improve the quality of the workplace environment, facilities, and infrastructure such as stable internet connections, computer specifications are the important criteria that must be met.

• Journal of Plant Biology
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• 제13권3호
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• pp.1-16
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• 1970

Field studies were conducted with kusabue variety and factorial design of 12 treatments composed of 3 levels, 10 kg, 15 kg and 20 kg of N per 10 a , and 4 levels of 80, 100, 120, and 140 hills per $3.3m^2$ plot in reclaimed slaty area having an average of 0.48% salt concentration. The law of spacing effect was observed in the increase of the number of stems at any application levels of N, and the increased N application exceeding 15 kg N per 10 a did not increase the number of stems in maximum tillering stages. The light recieving efficiency of plant population was greatly reduced by close planting when compared with the effect of increased N applications in heading stage. The spacing effect on the C/F ratio was not noted but was reduced markedly by the increased N applications, accordingly the spacing effect on rough rice yields to the LAI was less than by the increase N application. Closer spacing increased the number of panicle, and non-effective stems, decreased the number of grains per panicle and panicle weight. The increased N applications also increased the number of panicle, reduced the weight of 1,000 grains and the ratio of matured grains. It was recommended to plant 100 hills per $3.3m^2$ with the application of 15 kg N per 10 a in the reclaimed salty area of Korea.

• The Journal of Asian Finance, Economics and Business
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• 제8권2호
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• pp.635-641
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• 2021

This article analyzes the factors affecting income inequality in Vietnam, with data from 63 provinces and cities collected from the Vietnam Household Living Standards Survey of the General Statistics Office of Vietnam from 2010 to 2018. The article will firstly build a research model to identify factors affecting income inequality. Then, it uses the Generalized Method of Moments (GMM) method to evaluate the effect of factors on income inequality in Vietnam. The empirical estimate result shows that, in the period from 2010 to 2018, the factors such as the proportion of the working employees, income per capita, and inflation have positive effects on the Gini coefficient. That is, when these factors increase, there will be negative effects on improving income inequality in Vietnam. Conversely, when the factors such as the proportion of the literate adults, the proportion of the urban population, and population density increase they will have a positive impact on improving income inequality in Vietnam during this period. The estimated coefficients satisfied the sign expectation except the proportion of the literate adults. It means that, in Vietnam, the increase and more equilibrium in educational attainment balance the distribution of income and bring an improvement in income inequality.

• 한국인구학
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• 제29권2호
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• pp.195-213
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• 2006

2004년 말 담배가격인상의 효과를 파악하기 위하여 성인남성 흡연자 700명 비흡연자 300 명으로 구성된 추적조사에서 6개월 후 네 차례의 조사가 끝날 때까지 흡연자 572명, 비흡연자 198명의 흡연행태에 관한 자료가 구축되었다. 이 자료를 활용하여 단기 가격탄력성을 추정한 결과 흡연자들만의 가격탄력성은 가격인상전후 1개월, 3개월, 6개월 기간 동안에 각각 -0.6853, -0.6230, -0.5482로 추정되었고. 비흡연자를 포함한 경우에는 -0.3920, -0.3739, -0.3081로 추정되었다. 이 결과는 흡연율 감소를 위하여서는 대폭적인 가격인상이 매우 효과적이며 따라서 추가적인 가격인상이 추진되어야 한다는 점을 암시하고 있다.