Human Capital in Developing Countries

My dissertation investigates human capital issues, including education and health, in China. In the first chapter, I test for evidence of an intra-household flypaper effect by evaluating the impact of an educational fee reduction reform in rural China on different categories of household expenditures. Using data from Gansu Province in China, I find that educational fee reductions were matched by increased voluntary educational spending on the same children receiving fee reductions, providing strong evidence of an intra-household flypaper effect. The second chapter investigates the long-term effects of China’s 1959-1961 famine. Using China’s 2000 population census data, I find that women affected by the famine in the first year of life were living in smaller houses, achieved lower level of education, and provided less labor in their adulthood. But there are no long term effects on men affected by the famine in their early years of life. In the third chapter, I investigate the impact of school quality on students’ educational attainment using a regression discontinuity research design that compares students just above and below entrance examination score thresholds that strictly determine admission to the best high schools in China’s rural counties. Using data from Gansu Province in China, I find that attending the best high school in one’s county of residence decreases the probability to take college entrance examination; increases college entrance scores and the probability of entering college

Exporting and Firm Performance: Chinese Exporters and the Asian Financial Crisis

This paper analyzes firm panel data to examine how export demand shocks associated with the 1997 Asian financial crisis affected Chinese exporters. We construct firm-specific exchange rate shocks based on the pre-crisis destinations of firms’ exports. Because the shocks were unanticipated and large in magnitude, they are an ideal instrument for identifying the impact of exporting on firm productivity and other aspects of firm performance. We find that firms whose export destinations experience greater currency depreciation have slower growth in exports and that export growth increases firm productivity as well as other measures of firm performance. Consistent with the “learning-by-exporting” hypothesis, greater exports increase the productivity of firms exporting to developed countries but not of firms exporting via Hong Kong or directly to poorer destinations.

Exporting and Firm Performance: Chinese Exporters and the Asian Financial Crisis

We ask how export demand shocks associated with the Asian financial crisis affected Chinese exporters. We construct firm-specific exchange rate shocks based on the pre-crisis destinations of firms' exports. Because the shocks were unanticipated and large, they are a plausible instrument for identifying the impact of exporting on firm productivity and other outcomes. We find that firms whose export destinations experience greater currency depreciation have slower export growth, and that export growth leads to increases firm productivity and other firm performance measures. Consistent with "earning-by-exporting", the productivity impact of export growth is greater when firms export to more developed countries.

The contribution and FIP bias of three types of materials inside ICMEs associated with different flare intensities

The studies on the origination and generation mechanisms of ICME materials are crucial for understanding the connection between CMEs and flares. The materials inside ICMEs can be classified into three types, coming from corona directly (corona-materials), heated by magnetic reconnection in corona (heated-corona-materials), and generated by chromospheric evaporation (chromospheric-evaporation-materials). Here, the contribution and First Ionization Potential (FIP) bias of three types of materials inside ICMEs associated with different flare intensities are analyzed and compared. We find that the speeds and scales of near-Earth ICMEs both increase with flare intensities. The proportions of heated-corona-materials are nearly constant with flare intensities. The contributions of corona-materials (chromospheric-evaporation-materials) are significantly decreased (increased) with flare intensities. More than two-thirds of materials are chromospheric-evaporation-materials for ICMEs associated with strong flares. The FIP bias of corona-materials and heated-corona-materials is almost the same. The FIP bias of chromospheric-evaporation-materials is significantly higher than that of corona-materials and heated-corona-materials, and it is increased with flare intensities. The above characteristics of FIP bias can be explained reasonably by the origination and generation mechanisms of three types of ICME materials. The present study demonstrates that the origination and generation mechanisms of ICME materials are significantly influenced by flare intensities. The reasons for the elevation of FIP bias, if ICMEs are regarded as a whole, are that the FIP bias of chromospheric-evaporation-materials is much higher, and the chromospheric-evaporation-materials contributed significantly to the ICMEs which associated with strong flares.Comment: 12 pages, 3 figures, accepted for publication in Ap

Exporting and Firm Performance: Chinese Exporters and the Asian Financial Crisis

This paper analyzes firm panel data to examine how export demand shocks associated with the 1997 Asian financial crisis affected Chinese exporters. We construct firm-specific exchange rate shocks based on the pre-crisis destinations of firms’ exports. Because the shocks were unanticipated and large in magnitude, they are an ideal instrument for identifying the impact of exporting on firm productivity and other performance measures. For the period 1995 to 1998, we estimate an elasticity of Chinese exports with respect to a foreign trading partner’s real exchange rate of -0.48. Exporting is found to significantly boost a firm’s total factor productivity, net value added per worker, total sales, and return on assets.http://deepblue.lib.umich.edu/bitstream/2027.42/21612/1/IPC-working-paper-003-parkyangshijiang_expprod.pd

The deterioration of starch physiochemical and minerals in high-quality indica rice under low-temperature stress during grain filling

Low temperatures during the grain-filling phase have a detrimental effect on both the yield and quality of rice grains. However, the specific repercussions of low temperatures during this critical growth stage on grain quality and mineral nutrient composition in high-quality hybrid indica rice varieties have remained largely unexplored. The present study address this knowledge gap by subjecting eight high-quality indica rice varieties to two distinct temperature regimes: low temperature (19°C/15°C, day/night) and control temperature (28°C/22°C) during their grain-filling phase, and a comprehensive analysis of various quality traits, with a particular focus on mineral nutrients and their interrelationships were explored. Exposure of rice plants to low temperatures during early grain filling significantly impacts the physicochemical and nutritional properties. Specifically, low temperature increases the chalkiness rate and chalkiness degree, while decreases starch and amylopectin content, with varying effects on amylose, protein, and gelatinization temperature among rice varieties. Furthermore, crucial parameters like gelatinization enthalpy (ΔH), gelatinization temperature range (R), and peak height index (PHI) all significantly declined in response to low temperature. These detrimental effects extend to rice flour pasting properties, resulting in reduced breakdown, peak, trough, and final viscosities, along with increased setback. Notably, low temperature also had a significant impact on the mineral nutrient contents of brown rice, although the extent of this impact varied among different elements and rice varieties. A positive correlation is observed between brown rice mineral nutrient content and factors such as chalkiness, gelatinization temperature, peak viscosity, and breakdown, while a negative correlation is established with amylose content and setback. Moreover, positive correlations emerge among the mineral nutrient contents themselves, and these relationships are further accentuated in the context of low-temperature conditions. Therefore, enhancing mineral nutrient content and increasing rice plant resistance to chilling stress should be the focus of breeding efforts to improve rice quality

Does an intra-household flypaper effect exist? Evidence from the educational fee reduction reform in rural China

We test for evidence of an intra-household flypaper effect by evaluating the impact of an educational fee reduction reform in rural China on different categories of household expenditure, including spending on individual children. Using pre- and post-reform data, this study exploits cohort comparisons, variation in the extent of school fee reductions across different villages, and variation in the subsidies received by children enrolled in different grades within the same family to identify the impact of the reform. The results show that educational fee reductions are matched by increased voluntary educational spending on the same children who receive the fee reductions, providing strong evidence of an intra-household flypaper effect

Famine, fertility, and fortune in china

In this paper, I investigate the long term effects of China's Great Famine in 1959-1961 on cohorts affected by the famine in the first year of life. Using China's 2000 population census data and after controlling for positive fertility selections in the famine, I find that women exposed to the famine in the first year of life had a lower probability of completing high school and lived in less wealthy households. I do not find any significant effects of the famine on men. In addition, I find that if positive fertility selections are not controlled for, the negative effects become weaker.Famine Long term effects Fertility selections Education Wealth China

Human Capital in Developing Countries.

My dissertation investigates human capital issues, including education and health, in China. In the first chapter, I test for evidence of an intra-household flypaper effect by evaluating the impact of an educational fee reduction reform in rural China on different categories of household expenditures. Using data from Gansu Province in China, I find that educational fee reductions were matched by increased voluntary educational spending on the same children receiving fee reductions, providing strong evidence of an intra-household flypaper effect. The second chapter investigates the long-term effects of China’s 1959-1961 famine. Using China’s 2000 population census data, I find that women affected by the famine in the first year of life were living in smaller houses, achieved lower level of education, and provided less labor in their adulthood. But there are no long term effects on men affected by the famine in their early years of life. In the third chapter, I investigate the impact of school quality on students’ educational attainment using a regression discontinuity research design that compares students just above and below entrance examination score thresholds that strictly determine admission to the best high schools in China’s rural counties. Using data from Gansu Province in China, I find that attending the best high school in one’s county of residence decreases the probability to take college entrance examination; increases college entrance scores and the probability of entering college.Ph.D.EconomicsUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/63722/1/xzhshi_1.pd

Does School Quality Matter?: Evidence from a Natural Experiment in Rural China.

This paper investigates the impact of high school quality on students’ educational attainment using a regression discontinuity research design that compares students just above and below entrance examination score thresholds that strictly determine admission to the best high schools in China’s rural counties. Using data from Gansu Province in China, we find that attending the best high school in one’s county of residence increases college entrance examination scores by 0.21 standard deviations and increases the probability of qualifying for college admission by 18.7 percentage points conditional on taking the college entrance exam, but decreases the probability of taking a college entrance examination by 9.3 percentage points