A flexible and efficient spatial interpolator for radar rainfall estimation

A key challenge in rainfall estimation is spatio-temporal variablility. Weather radars are used to estimate precipitation with high spatial and temporal resolution. Due to the inherent errors in radar estimates, spatial interpolation has been often employed to calibrate the estimates. Kriging is a simple and popular spatial interpolation method, but the method has several shortcomings. In particular, the prediction is quite unstable and often fails to be performed when sample size is small. In this paper, we proposed a flexible and efficient spatial interpolator for radar rainfall estimation, with several advantages over kriging. The method is illustrated using a real-world data set.     

The logic of social policy expansion in a neoliberal context: health insurance reform in Korea after the 1997 economic crisis

In the aftermath of the economic crisis of the late 1990s, the Korean government reformed health insurance system to enhance social equity and solidarity. This article identifies the institutional features and political dynamics involved in completing the reform. The Korean case suggests a model of counter-movement that differs from the historical experiences of both democratic corporatist and liberal welfare states. Two institutional conditions within the politics of crisis contributed to the reform. A legacy of limited state welfare was critical in providing the impetus for reforming health insurance system. More importantly, the crisis maximized the state’s coordination capacity by mobilizing a coherent bureaucracy under the presidential authority, and by limiting interest politics. The Korean experience has important implications for the study of economic crisis and social policy response. The way in which a crisis provides new contexts for welfare and policy making institutions, rather than the institutions themselves, should be the main focus in analyzing policy responses. The focus on the political dynamics of an economic crisis helps us acknowledge the limit of ideological forces of a crisis in facilitating a particular policy response.     

Disparities in Human Papillomavirus Vaccine Literacy and Vaccine Completion Among Asian American Pacific Islander Undergraduates: Implications for Cancer Health Equity

Abstract

Purpose: Low rates of human papillomavirus (HPV) vaccination among young Asian American and Pacific Islander (AAPI) women need to be addressed, particularly given the high incidence of cervical cancer in this population. The current study aims to investigate predictors of HPV vaccination in young AAPI and non-Latina white (NLW) women. Methods: A secondary data analysis was conducted of a health survey administered to college-aged women (N = 2,270) at a large public university in the Midwest. Andersen's behavioral model of health services utilization guided the study theoretically, and hierarchical logistic regression analysis was conducted to investigate research aim. Results: NLW women had a significantly higher rate of vaccine completion than AAPI women (NLW = 60.7%; AAPI = 38.6%). NLW women also scored higher on all 5 measures of HPV vaccine literacy than AAPI women. Both groups of undergraduate women reported that increasing age, knowledge about HPV, greater use of gynecological services, and knowing someone who had cancer were significant factors related to HPV vaccination completion. In the NLW group, father's income was also found to be a predictor of HPV vaccination completion. Conclusions: Rate and predictors of HPV vaccination completion vary between NLW and AAPI women. Greater promotion of HPV literacy and gynecological service use should be made to young AAPI women to increase their HPV uptake. Further research should examine sociocultural factors that could hinder or promote HPV vaccination in young AAPI women.     

Factor demands, effective discount rates, and liquidity constraints in the retail trade firm

This is a firm-level empirical study of the impact of credit market frictions on firm factor demands. It extends previous work in two ways: it studies the impact of liquidity constraints on both fixed investment and employment and examines data on retail firms. Using the Euler equation approach, it finds strong evidence for the impact of financial constraints on factor demands. Estimated relationships in turn induce striking countercyclical movements in effective discount rates of firms with limited access to credit. The article concludes that the results found in previous work regarding excess sensitivities of investment to liquidity are indeed due to liquidity constraints.     

The sociology of grit: Exploring grit as a sociological variable and its potential role in social stratification

This paper proposes the currently fashionable psychological notion of “grit” as a potentially useful variable in sociological analysis and explores its potential for contributing to addressing sociological concerns. Grit, comprising perseverance and passion toward long‐term goals, has received growing attention within academia and from the general public as a strong predictor of achievement. Grit captures an important, noncognitive, underdeveloped aspect of agency not included in life course or stratification studies. Grit can contribute to our understanding about how the subjective beliefs that are typically treated as agency are actually translated into volitional action that constructs one's life course, a crucial potential life course mechanism. This paper suggests incorporating grit into sociological understanding of individual‐level aspects of stratification, moving beyond its current conception anchored fully in psychology, to further understand what it is, where it comes from, and why it is sociologically useful.     

Self‐report of emotional experience and peer nominations of expressivity: Predictability of change in teacher‐rated social behavior

We investigated individual differences in self‐reported emotional experience and peer‐perceived expressivity among children in mid‐ to late‐elementary school years. Specifically, we examined the constructs’ correspondence and temporal stability and also compared the degree to which each predicts change in classroom social behavior over 2 years. Participants were 199 children (Mage = 10 years, Time 1) and their classroom teachers who have participated in two times of assessment. We used self‐report of emotional experience and peer nominations of expressivity regarding happiness, anger, and sadness. Teachers rated children's social skills, externalizing problems, and internalizing problems. The correspondence was generally small in magnitude between self‐reported experience and peer nominations of expressivity. The stability of peer nominations of emotional expressivity was medium and comparable to that of self‐reported experience with the exception of happiness. The predictability of change in social behavior was more robust for peer nominations of expressivity than for self‐reported experience. We discussed the relevance of different dimensions of emotionality as well as informants in understanding the predictability of social behavior from emotionality. We also discussed the role of sociodemographic variables in emotional experience and expressivity and offered practical implications of peer nominations in the assessment of children's emotionality.     

Theorizing the US Racial State: Sociology Since Racial Formation

This article reviews theoretical developments in the sociology of the US racial state since the publication of Michael Omi and Howard Winant's groundbreaking Racial Formation in the United States. After briefly outlining their theory, it surveys the still diminutive literature and concludes by pointing to promising future directions, drawing on insights from other disciplines and incipient stirrings from within sociology. Destabilizing the unquestioned assumption that the United States is and has been a nation‐state, the article reconceptualizes it as an empire‐state. This turn establishes a firmer footing for the claim that the United States is intrinsically a racial state and yields a generative framework for reconsidering and stimulating scholarship toward more effective analysis and critique.     

International migration of Koreans and the Korean community in China

"This paper examines the background and trends of the overseas migration of Koreans, which started in the late 19th century because of economic, political, and social conditions in the Korean peninsula. Major characteristics and problems of Korean communities overseas are also discussed using China as an example."