• 보건의료산업학회지
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• 제6권4호
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• pp.13-25
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• 2012

There is growing evidence that substance use such as tobacco or alcohol consumption influences health disparity among adolescents. Previous research papers have shown an inconsistency in the relationship between socio-economic status (SES) and substance use in adolescents. However, little is known about socio-economic differences in unhealthy behaviors among Korean adolescents. The purpose of the present study is to explore associations between SES and substance use in Korean adolescents. The analysis was performed using data from the 2009 Korean Youth Risk Behavior Web-based Survey (YRBS), which included a nationally representative sample of middle and high school students. Drinking/heavy drinking and smoking/daily smoking behavior indices were used for dependent variables, and perceived economic status, family affluence score, parents' education were used for independent variables. Chi-square test were used to compare tobacco and alcohol consumption among 3 SES groups. Logistic regression models were used to identify statistically significant socio-economic factors after adjusting other covariates. Higher perceived economic status and higher family affluence were associated with higher rates of smoking, daily smoking, drinking, and heavy drinking, while lower level of parents' education was related to higher use of tobacco and alcohol. Socio-economic status significantly influences health behaviors in adolescents, and it may consequently affect health disparity in their adulthood. Therefore, there is a need of continuous monitoring and follow-up research of health disparity among adolescents.

• 한국정밀공학회지
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• 제23권4호
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• pp.75-82
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• 2006

In this paper, we propose an optimal trajectory for biped robots to move up-and-down stairs using a genetic algorithm and a computed-torque control for biped robots to be dynamically stable. First, a Real-Coded Genetic Algorithm (RCGA) which of operators are composed of reproduction, crossover and mutation is used to minimize the total energy. Constraints are divided into equalities and inequalities: Equality constraints consist of a position condition at the start and end of a step period and repeatability conditions related to each joint angle and angular velocity. Inequality constraints include collision avoidance conditions of a swing leg at the face and edge of a stair, knee joint conditions with respect to the avoidance of the kinematic singularity, and the zero moment point condition with respect to the stability into the going direction. In order to approximate a gait, each joint angle trajectory is defined as a 4-th order polynomial of which coefficients are chromosomes. The effectiveness of the proposed optimal trajectory is shown in computer simulations with a 6-dof biped robot that consists of seven links in the sagittal plane. The trajectory is more efficient than that generated by the modified GCIPM. And various trajectories generated by the proposed GA method are analyzed in a viewpoint of the consumption energy: walking on even ground, ascending stairs, and descending stairs.

• The Journal of Asian Finance, Economics and Business
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• 제7권2호
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• pp.131-141
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• 2020

This study examines the poverty indicators in Northeast region of Thailand by adopting the global Multidimensional Poverty Index (MPI) methodology and the national survey of Minimum Basic Needs (MBN) of Thailand. Data are collected from three different districts in Khon Kaen province namely: Khok Po Chai, Sam Sung, and Nam Pong. The sample size is 187 households. Data analysis uses Ordinary Least Square (OLS) regression approach and includes 7 dimensions of poverty (health, environment, education, economy, Thai value, asset? empowerment, and digital literacy) with a total of 41 indicators. This study has found that poverty indicators in Khon Kaen province remains centered around the aspects of health and employment dimensions. While a change of family structure in the Thai society since 1960s reduces the family size, household saving substantially increases over the years. The effects of health dimension in poverty, on the other hand, appears on the other poverty dimension of Thai value, which include (1) a bad living habit of head of household (smoke or alcohol consumption) that links with illness and disease, (2) religious practice, and (3) chronic illness. Lastly, there are income gaps of different careers in the area, which suggests the issue of income inequality.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2019년도 추계학술대회
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• pp.5-5
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• 2019

The objectives of this paper are (i) to analyze past trends and future directions of rice production, consumption and trade across the world and (ii) to discuss emerging challenges and future directions in the global rice industry. Rice is a staple food of over half of the world's 7.7 billion people. It is an important economic, social, political, and cultural commodity in most Asian countries. Rice is the $1^{st}$ most widely consumed, $2^{nd}$ largely produced, and $3^{rd}$ most widely grown food crop in the world. It was cultivated by 144 million farms in over 100 countries with harvested area of over 163 million ha producing about 745 million tons paddy in 2018. About 90% of the total rice is produced in Asia. China and India, the biggest rice producers, account for over half of the world's rice production. Between 1960 and 2018, world rice production increased over threefold from 221 to 745 million tons (2.1% per year) due to area expansion from 120 to 163 million ha (0.5% per year) and paddy yield increase from 1.8 to 4.6 t/ha (1.6% per year). The Green Revolution led massive increase in rice production prevented famines, provided food for millions of people, reduced poverty and hunger, and improved livelihoods of millions of Asians. The future increase in rice production must come from yield increase as the scope for area expansion is limited. Rice is the most widely consumed food crop. The world's average per capita milled rice consumption is 64 kilograms providing 19% of daily calories. Asia accounted for 84% of global consumption followed by Africa (7%), South America (3%), and the Middle East (2%). Asia's per capita rice consumption is 100 kilograms per year providing 28% of daily calories. The global and Asian per capita consumption increased from the 1960s to the 1990s but stable afterward. The per capita rice consumption is expected to decline in Asia but increase outside Asia especially in Africa in the future. The total milled rice consumption was about 490 million tons in 2018 and projected to reach 550 million tons by 2030 and 590 million tons by 2040. Rice is thinly traded in international market because it is a highly protected commodity. Only about 9% of the total production is traded in global rice market. However, the volume of global rice trade has increased over six-fold from 7.5 to 46.5 million tons between the 1960s and 2018. A relatively small number of exporting countries interact with a large number of importing countries. The top five rice exporting countries are India, Thailand, Vietnam, Pakistan, and China accounting for 74% of the global rice export. The top five rice importing countries are China, Philippines, Nigeria, European Union and Saudi Arabia accounting for 26% of the global rice import. Within rice varieties, Japonica rice accounts for the highest share of the global rice trade (about 12%) followed by Basmati rice (about 10%). The high concentration of exports to a few countries makes international rice market vulnerable to supply disruptions in exporting countries, leading to higher world prices of rice. The export price of Thai 5% broken rice increased from 198 US$/ton in 2000 to 421 US$/ton in 2018. The volumes of trade and rice prices in the global market are expected to increase in the future. The major future challenges of the rice industry are increasing demand due to population growth, rising demand in Africa, economic growth and diet diversification, competition for natural resources (land and water), labor scarcity, climate change and natural hazards, poverty and inequality, hunger and malnutrition, urbanization, low income in rice farming, yield saturation, aging of farmers, feminization of agriculture, health and environmental concerns, improving value chains, and shifting donor priorities away from agriculture. At the same time, new opportunities are available due to access to new technologies, increased investment by the private sector, and increased global partnership. More investment in rice research and development is needed to develop and disseminate innovative technologies and practices to overcome problems and ensure food and nutrition security of the future population.

• 한국식생활문화학회지
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• 제36권1호
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• pp.92-102
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• 2021

There is little information on the nutrient intake according to the city size and small town in Korean elderly. This study analyzed the nutritional consumption of older people in metropolitan, middle and small cities, and rural areas according to four income levels. The recent data from the 2016~2018 Korean National Health and Nutrition Survey, Centers for Disease Control and Prevention were used. The final analysis included 4,325 individuals (Male: 1,856, Female: 2,469) over 65 years old. Multivariable regression with a complex sample design was conducted to compare the nutrient intake among the groups. In a comparison within regions, the nutrition status of the elderly in small towns was more vulnerable than metropolitan and middle & small cities. The energy intakes were similar between the groups. The carbohydrate intake of middle & small cities was significantly higher than the other regions. The intake of other nutrients in metropolitan and middle & small cities appeared to be higher than in rural areas. The number of nutrients with statistical significance between low and high-income levels were 19 in metropolitan, 11 in middle & small cities, and 5 in rural areas. Each contribution of carbohydrate, fat, and protein to the total energy intake was lower in the low-income level than the high-income level in metropolitan and middle & small cities. On the other hand, in rural areas, only the contribution of protein to energy intake was lower in the low-income level than the high-income level. Cities with higher levels of urbanization had more severe nutritional inequality in relation to the income level. There was also nutritional inequality present in rural areas but it was to a lesser extent. Moreover, the generally low level of nutrient intake was problematic in rural areas. These findings could be used as fundamental evidence for developing community nutritional policies for the elderly.

• 보건행정학회지
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• 제10권4호
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• pp.1-19
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• 2000

We have witnessed several kinds of new discourses and practices in health and medicine since the 1970s, such as popular concerns with alternative or complementary medicine, inordinate attention to the promotion of 'healthy' living, rapid resurrection of traditional medicine and ecological management of health. Four structural and situational factors are discussed to underlie these new trends：(i) as 'crisis' in health care of the 1970s was translated into health care reform of the 1980s backed up by neo-liberal political philosophy, the state responsibility for nation's health is being transferred to the individual ；(ii) it resulted from the limits of biomedical paradigm in dealing with chronic diseases；(iii) medico-scientific knowledge of disease is transformed into the subjective discourses and technologies of health in postmodern society ； and (iv) it is deeply associated with the considerable increase in environmental risk perception of health and disease. There are some inherent countervailing forces in these new discourses and practices. First, while they derive from lifestyle-oriented behavioral change, medicalization of life and death is still consolidated in the new trends. Second, inasmuch as new tides are reliant upon science, they. are likely to be remote from techne that means not the practical application of theoretical knowing but a special form of practical knowing. Third, as new discourses and activities accomplished＇in the name of health＇increasingly occupy important strategies in forming the self-identity, they serve as moral apparatus which involves prescriptions about how we should live our lives and conduct our bodies, both individually and collectively. Therefore, two points are suggested to consider seriously whether these streams will succeed in improving the‘healthy’living of all the people. Instead of limiting tile perspective to medicine, healing and health care, a new matrix that interweave welfare, ecology and labor along with them is timely needed for enhancing the health for all. In addition, as the World Health Report fm strongly shows, inequality in health heavily depends upon socio-economic development of a society, and it is not the richest countries that have the best health status, but those that have the smallest income differences between rich and poor.

• 디지털융복합연구
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• 제18권10호
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• pp.239-252
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• 2020

본 연구자들은 텍스트 마이닝을 활용하여 SUV 선호 증가의 요인을 탐색하고자 한다. 온라인 자동차 커뮤니티인 보배드림에서 2005년부터 2019년까지 작성된 SUV 관련 게시글 32,679개를 수집한 후, LDA 토픽모델링 기법을 적용하였다. 분석 결과, SUV 담화에서 주요한 토픽으로 등장한 '안전'이 범죄로부터 개인의 위험에 주목한 기존 연구와 달리 교통사고 및 고속주행 상황에서의 안전을 의미하는 것으로 드러났다. 한국 사회의 SUV 소비는 개인이 운전하면서 느끼는 불안과 위험에 대한 대비 수단을 의미한다고 볼 수 있다는 것이다. 또한, 이와 같은 위험 인식 저변에는 불평등 증대로 인해 감소하는 타인에 대한 신뢰가 작동한다고 할 수 있다.

• 한국사회정책
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• 제25권2호
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• pp.243-280
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• 2018

본 논문은 문재인 정부의 핵심 국정운영 전략으로 '알려진' 소득수도성장과 관련된 논의를 한국 복지체제의 관점에서 검토했다. 소득주도성장 전략에 대한 다양한 논점들을 제시했지만 소득주도성장 전략은 1980년대 이래 공급중심의 성장전략이 장기침체를 유발하고, 불평등을 심화시켰다는 점을 고려하면 수요측면을 강조한 시의 적절한 대안 담론으로 보인다. 특히 소득주도성장 전략은 한국 복지체제의 관점에서 사회지출이 인적자본을 향상시켜 성장에 기여한다는 사회투자전략의 협소한 공급측면의 논리와 사회지출을 안정화 장치로 접근했던 전통적 접근을 넘어 생산과 소비를 선순환시키는 중요한 성장 동력으로 위치시켰다는 점이 중요하다. 하지만 본 논문은 단순히 임금을 높이고, 사회지출을 늘린다고 해서 총수요가 증가하고 투자와 생산이 증가해 경제가 성장하는 것은 아니라는 것을 확인했다. 더욱이 경험적 연구에 따르면 대외부문과 부채를 분석에 포함할 경우 한국 성장체제의 임금주도성은 약해지는 것으로 나타났다. 이러한 이유로 본 연구는 실질임금의 증가와 사회지출 증가가 경제성장과 선순환하기 위해서는 정부의 정교한 정책개입이 필요하다는 결론을 내렸다.

• 아태비즈니스연구
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• 제14권2호
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• pp.51-61
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• 2023

Purpose - Since COVID-19, the government's expansion of liquidity to stimulate the economy has resulted in an increase in private debt and an increase in asset prices of such as real estate and stocks. The recent sharp rise of the US Federal fund rate and tapering by the Fed have led to a fast rise in domestic interest rates, putting a heavy burden on the Korean economy, where the level of household debt is very high. Excessive household debt might have negative effects on the economy, such as shrinking consumption, economic recession, and deepening economic inequality. Therefore, now more than ever, it is necessary to identify the causes of the increase in household debt. Design/methodology/approach - Main methodology is regression analysis. Dependent variable is household loans from depository institutions. Independent variables are consumer price index, unemployment rate, household loan interest rate, housing sales price index, and composite stock price index. The sample periods are from 2017 to May 2022, comprising 72 months of data. The comparative analysis period before and after COVID-19 is from January 2017 to December 2019 for the pre-COVID-19 period, and from Jan 2020 to December 2022 for the post-COVID-19 period. Findings - Looking at the results of the regression analysis for the entire period, it was found that increases in the consumer price index, unemployment rate, and household loan interest rates decrease household loans, while increases in the housing sales price index increase household loans. Research implications or Originality - Household loans of depository institutions are mainly made up of high-credit and high-income borrowers with good repayment ability, so the risk of the financial system is low. As household loans are closely linked to the real estate market, the risk of household loan defaults may increase if real estate prices fall sharply.

• 대한지리학회지
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• 제30권4호
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• pp.389-410
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• 1995

미국 대도시의 교외지역은 재정적으로 독립된 자 치시와 특별구의 등장으로 공간적으로 분할된 양상을 보이고 있다. 이들 독립된 자치구역들 은 지리적으로 한정된 서비스 영역을 가지며 서비스 제공에 필요한 비용을 지방세로 충당한 다는 점에서 교외지역 주민의 복지에 중요한 시사점을 제시한다. 본 연구는 미국 대도시 교 외지역에 나타나는 분할된 행정구역의 공간조직을 이해하기 위하여 첫째 대도시 주변에서 자치시와 특별구를 형성하는 목적을 개괄하고, 둘째 세인트 루이스를 사례로 분할된 자치구 역과 세기반의 지리적 분포 그리고 이의 차이가 공공서비스의 수준으로 연계되어 나타남을 분석을 통하여 살펴보았다. 교외지역의 자치시와 특별구들은 독립적인 과세와 서비스 제공 의 권한을 가지며 지리적으로 특정장소를 점하고 있는 부동산을 주요 세원으로 하고 있다. 따라서 자치구역의 형성은 세금부담을 낮추고 공급받는 서비스 수준을 높이려는 자치구역내 주민들의 단체행동의 산물로서 지역마다 담세율과 공공서비스 수준의 차이를 보이는 분할된 형태를 나타내게 된다. 사례로 살펴본 세인트 루이스시 교외지역은 자치시와 특별구가 혼재 하여 1986년 당시 90개의 자치시, 25개의 공립학군, 64개의 소방구역, 36개의 하수처리구역 등을 포함하고 있다. 자치시와 공립학군간의 재산세 과세기반은 상당한 차이를 나타내며 이 들 과세기반의 차이를 기준으로 세가지의 분석을 시행하였다. 첫째, 지출규모로 본 경찰 그 리고 공질학교의 서비스 수준과 연계시켜 분석한 결과는 주민-학생 일인당 지출은 자치정 부의 과세기반으로부터 직접적인 영향을 받음을 보여주고 있다. 둘째, 자치정부간의 재정능 력의 차를 줄이기 위하여 판매세, 주 그리고 연방정부의 보조가 있으나 이들을 재산세에 더 하여 분석한 결과는 재산세-서비스 지출의 연계가 그다지 약화되지 않았음을 보여주고 있 다. 셋째, 자치행정구역은 실제로 다양한 과세율을 적용하고 있으며 이를 개인별 소득수준에 비춘 과세부담은 서비스 수준과 역관계로 나타나 낮은 수준의 서비스를 공급받는 자치구역 이 높은 과세부담을 가지고 있음을 보여 주고 있다. 결론적으로 미국 대도시 교외지역의 행 정구역 분할은 지리적 입지의 특성을 갖는 재산세에 기반하여 낮은 과세부담으로 높은 수준 의 서비스를 제공받으려고 교외지역 주민들이 추구한 집합소비의 결과라 하겠다. 이는 지역 간의 과세기반의 차이에서 기인하는 공공서비스 수준의 차이를 고착화시키며 행정구역의 공 간조직에 기본적인 분할의 요인으로 작용한다고 이해할 수 있다.