Effects of U.S. States' Social Welfare Systems on Population Health

Social scientists have studied the welfare state extensively. Many studies seek to understand the determinants of the welfare state; however, a few have explored the social consequences of social welfare systems, especially on health outcomes of the population. Even though cross-national comparative studies support the thesis that the welfare state regime type, which represents different levels of commitment on social welfare, is closely linked to population health, there is little research to support this argument at a sub-national level. To fill the gap, this study explores the effects of the U.S. states' social welfare systems on health using age-adjusted mortality rates as a proxy for population health. By operationalizing social welfare systems as three dimensions—public expenditures, tax structures, and welfare program rules—we find that more generous education spending, progressive tax systems, and more lenient welfare program rules help to improve population health. The model corrects for first-order serial correlation using Prais-Winsten regression methods and is estimated with state and year-fixed effects.     

中国纺织建设公司的民营化与股票发行探析

抗战时期,纺织工业的国营、民营之争就已开始,但国民政府一贯坚持纺织工业民营化的原则。然而,战后国民政府却接收原在华日伪纱厂,建立国营中国纺织建设公司,违背了纺织工业民营化的诺言。以后为补充财政不足,国民政府又一度积极推进中纺公司民营化及其股票发行工作。尽管如此,1948年以后由于内战扩大、通货膨胀等种种原因,纺织工业走向全业破产。纺织业资本纷纷逃货南下,国民政府对财政经济状况失去控制,资本市场日益失序,无法正常运作。在这种情况下,中纺公司的股票出售不能按预期顺利进行,其民营化方案也自然未能实现。     

Modeling Air Quality in Urban Areas: A Cell‐Based Statistical Approach

Statistical regression models are presented that explain the observed variations, across urban areas, in the concentrations of two major pollutants, ozone and carbon monoxide. Model specification and estimation are based on an explicit and new spatial framework derived from the theoretical concept of well‐mixed cells, whereby the basic Fickian system of diffusion equations is integrated over the regional space partitioned into a grid of large cells. The concentration in each cell results from the balance of pollutant flows into and out of this cell and of pollutant emissions and removal within that cell, and is expressed as the sum of two concentration contributions: (1) the local effect, dependent upon pollution‐related factors around the measuring station, and (2) the regional effect, dependent upon pollutant flows originating outside the local area. A large database is developed, making extensive use of GIS technology, to spatially relate such data as pollution measurements, meteorological factors, land‐use characteristics, census socioeconomic data, and major highway network characteristics. The results confirm the appropriateness of the well‐mixed cell framework, are in line with general knowledge regarding the determinants of ozone and carbon monoxide concentrations, and clarify the role of transportation, residential fuel use, economic activities, natural environments, and meteorological factors such as temperature and solar radiation. About SO percent of the variations in concentrations are explained by these models. Several areas of further research are outlined.     

Land Markets in the Harris-Todaro Model: A New Factor Equilibrating Rural-Urban Migration

Recent research in the Harris-Todaro (HT) tradition has added an important new element to the model by incorporating an urban land market. Brueckner and Zenou (1999) (hereafter BZ) argue that a model where migration equalizes expected wages between city and countryside may overlook another important force that equilibrates the process of rural-urban migration. This force is the migration-induced rise in the urban cost of living, which occurs principally through escalation of urban land rents as the city population expands. Land-rent escalation, which tends to limit rural-urban migration, provides an important additional force that may help determine city sizes in developing countries. The present paper provides a simpler alternative to BZ's analysis by assuming that urban residents smooth their income as they cycle between formal and informal employment. This allows migration decisions to be based on the expected wage, as in the usual HT framework, in a model that includes a land market. The analysis shows that this modified framework generates results slightly different from those of BZ.     

Compositional and Microstructural Study of KoryŎ Celadon and Whiteware Excavated from SŎRi Kiln in Kyŏnggi Province

An extensive study of the composition and microstructure of celadon and whiteware sherds excavated at Sori, one of the most important sites that were active during the founding stage of the stoneware and porcelain industry in Korea, was carried out. The analysed sherds were organized according to four different levels of the excavation and four different styles of haemurigup foot rim. Principal component analysis of the chemical compositions of the sherds revealed slight differences in their body and glaze compositions between the levels of excavation. Porcelain stone with high silica and low aluminium contents was generally used as the body material and wood ash as the chief flux in the glaze. Over the period of operation, the aluminium content in the bodies of the ceramics decreased and the P₂O₅ content in the glazes increased. Glazed bodies were fired in a single step, in contrast to the two‐step method used in later ceramic production. Firing conditions were adjusted to produce vitrification of the glazes, which meant that vitrification of the ceramic bodies occurred to varying extents, mostly determined by the relative contents of flux in the body and the glaze.     

Operationalizing social equity in public policy design: A comparative analysis of solar equity policies in the United States

While it is widely recognized that energy injustices are prevalent in the clean energy transition process, there has been limited research attention on policy efforts aiming to mitigate these inequities. In this paper, we use solar equity policies as an empirical case study to understand how social equity considerations are conceptualized and operationalized in energy policy content. We build upon the policy design literature and code institutional statements of 54 solar equity policies adopted between 2001 and 2021 in the United States. In our comparative analysis, we focus on three levels of policy design elements that can be directly observed in written policy language: macro-policy goal construction, meso-policy instrument choices, and micro-level policy settings and calibrations. We find that the policy goal of energy justice is multifaceted, with a great emphasis on solar energy accessibility and provision of economic benefits and security for disadvantaged communities. There is a dominant preference by policymakers to use redistributive policies and community solar programs to advance energy justice-related goals. Solar equity policy instruments on-the-ground measures have also been calibrated to target specific disadvantaged populations in the energy system, which focus mostly on income-based vulnerability.     

Project-based community participatory action research using geographic information technologies

The paper investigates the effects of a project-based community participation course in which students chose research topics relevant to a local community. Specifically, the students undertook the following projects: (1) creating a virtual 3D model of a local government office, (2) creating interactive digitized versions of mountain trails using geotourism, (3) determining optimal locations for trash recycling bins using network analysis, and (4) assessing the water quality of a local river. Geographic information technologies, such as GIS and Google Earth, were employed as analytical and visualization tools. The answers to a questionnaire, course evaluations, reflective journals, and interviews found that participants positively evaluated their learning experiences. In addition, the projects received favorable reviews from community members and professional geographers.