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Identification of quantile treatment effects in difference-in-differences settings with staggered adoption
In: Economics letters, Band 241, S. 111792
ISSN: 0165-1765
Characterization of the migration of organic contaminants in laboratory-scale groundwater polluted by underground coal gasification
In: Environmental science and pollution research: ESPR, Band 31, Heft 23, S. 34446-34458
ISSN: 1614-7499
Ureltu's Ewenki narratives and the crisis of minority cultures in China
In: Race & class: a journal for black and third world liberation, Band 61, Heft 3, S. 50-64
ISSN: 1741-3125
The author Ureltu has undergone a transformation from novelist to producer and disseminator of Ewenki historical culture, moving from fictional Ewenki stories of forty years ago to recent non-fictional Ewenki historical narratives. In the course of this transformation, he has provided a sample of Ewenki culture that, on the one hand, can break down misunderstandings of the culture and, on the other, can revitalise a recognition of Ewenki cultural values. He has used those examples to include reflection on knowledge and power as it plays out in the current cultural crisis of other ethnic minorities in China. He speaks of the identity consciousness of a 'cultural chain' that extends beyond Ewenki culture to the inheritance of Chinese culture as a whole.
Does environmental information disclosure increase firm exports?
In: Economic Analysis and Policy, Band 73, S. 620-638
Impacts of China's Rural Land Policy and Administration on Rural Economy and Grain Production
In: Review of policy research, Band 23, Heft 2, S. 607-624
ISSN: 1541-1338
AbstractThe distinctive changes in China's rural land policy and administration have exerted significant impacts on China's rural socioeconomic development and grain production, either positively or negatively. This article reviews the changes of China's rural land policy and administration in the recent 5 decades. After the land reform accomplished in 1952 and the people's commune system implemented during 1952–1978, China adopted a house responsibility system, which was proven to be effective for increasing grain output and peasants' income. Yet, it preserved the urban–rural dichotomous economy, formed in the people's commune era, which placed agriculture in a secondary position. The low efficiency in agricultural production and the small‐scale household management, under the current rural land policy and administration, stimulated the transfers of agricultural laborers to the nonagricultural sectors and cultivated land to urban land. Grain production and cultivated land protection in China are conducted most times under the political mandates rather than the economic guidance. Although the previous rural land policies and the strict residence registration helped China to avoid problems prevailing in prime cities of other developing countries, compulsorily asking peasants to grow more grain and to stay in their native land resulted in outstanding social injustice, vulnerable grain production systems, and poverty in rural areas. There are also outstanding conflicts among the interests of central government, local governments, collectives, and peasant households. More flexible rural land policies and more strict cultivated land administrations could be solutions for improving the profitability of grain production and protecting the rapidly declining cultivated land. Compensations for the low profitability in grain production are also needed to encourage an increase in grain output and rural economy.
Impacts of China's rural land policy and administration on rural economy and grain production
In: The review of policy research: RPR ; the politics and policy of science and technology ; journal of the Science, Technology, and Environmental Politics Section of the American Political Science Association, Band 23, Heft 2, S. 607-624
ISSN: 1541-132X
The distinctive changes in China's rural land policy and administration have exerted significant impacts on China's rural socioeconomic development and grain production, either positively or negatively. This article reviews the changes of China's rural land policy and administration in the recent 5 decades. After the land reform accomplished in 1952 and the people's commune system implemented during 1952-1978, China adopted a house responsibility system, which was proven to be effective for increasing grain output and peasants' income. Yet, it preserved the urban-rural dichotomous economy, formed in the people's commune era, which placed agriculture in a secondary position. The low efficiency in agricultural production and the small-scale household management, under the current rural land policy and administration, stimulated the transfers of agricultural laborers to the nonagricultural sectors and cultivated land to urban land. Grain production and cultivated land protection in China are conducted most times under the political mandates rather than the economic guidance. Although the previous rural land policies and the strict residence registration helped China to avoid problems prevailing in prime cities of other developing countries, compulsorily asking peasants to grow more grain and to stay in their native land resulted in outstanding social injustice, vulnerable grain production systems, and poverty in rural areas. There are also outstanding conflicts among the interests of central government, local governments, collectives, and peasant households. More flexible rural land policies and more strict cultivated land administrations could be solutions for improving the profitability of grain production and protecting the rapidly declining cultivated land. Compensations for the low profitability in grain production are also needed to encourage an increase in grain output and rural economy.
SSRN
The Relationship Between the Average Decreased Times of Estradiol and Early Miscarriage: An Observational Study
In: Reproductive sciences: RS : the official journal of the Society for Reproductive Investigation
ISSN: 1933-7205
AbstractDecreased estradiol (E2) levels are associated with early miscarriage (EM), but the relationship between decreased times of E2 and EM has not been reported. We aimed to investigate the relationship between the average decreased times of E2 (ADTE) and EM. Women with a history of miscarriage were retrospectively recruited from the Reproductive Center of Lanzhou University Second Hospital (Lanzhou, China) between September 2019 and February 2022. Based on pregnancy outcome, they were divided into ongoing pregnancy group (n = 359) and EM group (n = 104). In addition, subgroup analyses were performed for the number of previous miscarriages and whether E2 levels decreased continuously. The exposure and outcome variables were ADTE and miscarriage before 12 weeks of gestation, respectively. Totally, 1171 patients were recruited and 463 patients were finally analyzed. ADTE was associated with EM (odds ratio [OR] = 1.346, 95% confidence interval [CI]1.154-1.571, P < 0.001). When ADTE ≥ 2.5, the EM risk increased 1.17-fold compared to patients with 0-1.249 times (OR = 2.170, 95% CI 1.144-4.117, P = 0.018). Moreover, a threshold effect existed in the ADTE and the risk of EM with a value of 4.9 times. When exceeding 4.9 times, the EM risk increased 4.713-fold for each increased unit (OR = 5.713, 95% CI 1.255-23.170, P = 0.024). Subgroup analysis showed that ADTE had a greater effect on the occurrence of EM in women with a history of 1-2 miscarriages than in women with 3 miscarriages. Decreased E2 was a risk factor for EM regardless of whether it dropped continuously or not. In conclusion, our study identifies a potential link between ADTE and early miscarriage risk in women with prior miscarriages, yet cautious interpretation is necessary due to inherent design limitations. Further research with prospective designs and large population samples is essential to validate ADTE's utility as a predictive indicator for early miscarriage in clinical settings.
Optimizing the Selection and Combined Operation of Multiple Air-Source Heat Pumps for Sustainable Heating Systems
In: SETA-D-23-01940
SSRN
Metabolome and Transcriptome Revealed Genes Associated with Anthocyanin Accumulation in Purple Caitai (Brassica Compestris. VAR. Tsai-Tai Hort.)
In: HORTI35930
SSRN
Recent advances and prospects of constructed wetlands in cold climates: a review from 2013 to 2023
In: Environmental science and pollution research: ESPR, Band 31, Heft 32, S. 44691-44716
ISSN: 1614-7499
Negative-k and positive-k layers introduced into graphene/polyvinylidene fluoride composites to achieve high-k and low loss
In: Materials and design, Band 209, S. 110009
ISSN: 1873-4197
Influence of NbC and VC on microstructures and mechanical properties of WC–Co functionally graded cemented carbides
In: Materials and design, Band 90, S. 562-567
ISSN: 1873-4197
Chitosan Nanofiber Paper Used as Separators for High Performance and Sustainable Lithium-Ion Batteries
In: CARBPOL-D-23-03388
SSRN