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Your search keyword '"Chen, Xingpeng"' showing total 110 results
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110 results on '"Chen, Xingpeng"'

5. The Significance of Agricultural Modernization Development for Agricultural Carbon Emission Efficiency in China.

Author

Zhang, Suhan, Li, Xue, Nie, Zhen, Wang, Yan, Li, Danni, Chen, Xingpeng, Liu, Yiping, and Pang, Jiaxing

Subjects
AGRICULTURAL modernization, AGRICULTURAL pollution, CARBON emissions, AGRICULTURAL development, DATA envelopment analysis, SILVER, CARBON offsetting
Abstract

Agricultural production contributes to the increase in global carbon emissions. It is crucial to improve output and reduce carbon emissions in the context of agricultural modernization, for which improved carbon emission efficiency is key. However, the role of agricultural modernization in promoting agricultural carbon emission efficiency is not clear. Hence, the aim of this article is to analyze the spatiotemporal evolution of agricultural modernization and agricultural carbon emission efficiency in China from 2000 to 2019 and to reveal the relationship between agricultural modernization and agricultural carbon emission efficiency. The results showed that (1) in China, the overall level of agricultural modernization has been steadily increasing, and the regional differences are widening, showing a spatial pattern characterized by a gradual decline from the eastern and central regions to the western region. (2) China's agricultural carbon emission efficiency continues to grow but has not achieved a data envelopment analysis (DEA) effect, with the eastern and western regions having higher agricultural carbon efficiency than the central region. The regional differences first narrow and then expand. (3) Agricultural modernization significantly promotes agricultural carbon emission efficiency in both the province and the neighboring provinces, and the interprovincial spillover effect exceeds the direct effect within the province. A nonlinear correlation exists between agricultural modernization and agricultural carbon emission efficiency. [ABSTRACT FROM AUTHOR]

Published
2024
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12. Bicycle Evolution in China: From the 1900s to the Present

Author

Zhang, Hua, Shaheen, Susan, PhD, and Chen, Xingpeng

Subjects
bicycle, China, electric bike, evolution, public bikesharing
Abstract

This article examines four phases in bicycle evolution in China from initial entry and slow growth (1900s to 1978), to rapid growth (1978 to 1995), bicycle use reduction (1995 to 2002), and policy diversification (2002 to present). Two bicycle innovations, electric bikes, and public bikesharing (the shared use of a bicycle fleet), are also explored in this article. Electric bikes could provide a transitional mode on the pathway to bicycle and public transportation integration or to small battery electric cars. Four lessons have been learned from China’s electric bike experience relevant to government policy and management. Public bikesharing represents an important step towards integrating the bicycle with bus, metro, and rail systems. Five early operational lessons have been identified from China’s limited public bikesharing experience.

Published
2013

37. Opposing-coils transient electromagnetic method focused near-surface resolution

Author

Wang Liang, Song Gang, Chen Xingpeng, Zhenzhu Xi, Hou Haitao, Zhou Sheng, Long Xia, Long Huang, Xiao Wei, and Qingxing Qi

Subjects
Physics, Electromagnetics, business.industry, Transmitter, 0211 other engineering and technologies, 02 engineering and technology, Concentric, 010502 geochemistry & geophysics, 01 natural sciences, Magnetic field, Geophysics, Optics, Amplitude, Nuclear magnetic resonance, Geochemistry and Petrology, Electromagnetic coil, Time domain, Transient (oscillation), business, 021101 geological & geomatics engineering, 0105 earth and related environmental sciences
Abstract

The transient electromagnetic (TEM) method is a commonly used, nonintrusive, geophysical method, but inherent mutual induction between the transmitter (TX) and receiver (RX) coils strongly influences the measurements. We have developed an opposing-coils configuration to greatly reduce this effect. Three coils are used in this system. The upper opposing coil is physically the same as the lower TX coil, and they are concentric and parallel to the middle RX coil. A pair of currents with equal amplitudes but reverse directions is injected into the opposing and TX coils. Theoretical calculations in free space show that the received magnetic field by the RX coil is zero, which indicates that the mutual induction effect could be largely reduced. Physical experiments prove that an almost-pure secondary field could be acquired using this system. We have studied an optimal separation between the TX and opposing coils to guarantee that the primary magnetic field is powerful and the instrument is compacted for field work. Then, the efficient exploration depth of this system for typical geoelectric models was simulated to be approximately 15–50 m. Comparisons of simulated responses over highly conductive thick plates in free space and a field test over a culvert structure between this system and EM-47 showed that the system has enhanced sensitivity and lateral resolution. This system can be used in near-surface investigations, e.g., groundwater, environmental, and engineering investigations.

Published
2016

42. The Life-Cycle Environmental Impact of Recycling of Restaurant Food Waste in Lanzhou, China.

Author

Zhang, Zilong, Han, Wenyan, Chen, Xingpeng, Yang, Na, Lu, Chenyu, and Wang, Yueju

Subjects
FOOD industrial waste, WASTE recycling, REFUSE containers, ELECTRIC power conservation, COMPOSTING, OZONE generators, PETROLEUM, CITY dwellers
Abstract

The recycling of restaurant food waste can bring environmental benefits and improve food safety for urban residents. We here assessed the entire life cycle of the anaerobic digestion–aerobic composting technique of restaurant food waste recycling using Lanzhou as a case study. We used the CML2001 method provided with the Gabi software and compared the results to those produced using the traditional treatment techniques (landfill and incineration). This work includes a sensitivity analysis of the results. It is here concluded that the anaerobic digestion–aerobic composting technique had the smallest environmental impact of the methods here examined. The life cycle of anaerobic digestion–aerobic composting primarily consumes water, clay, coal, crude oil, and natural gas. The pre-processing phase consumes the most resources, and anaerobic digestion showed the greatest environmental impact. Specific environmental impacts in order from the highest to lowest potential to exacerbate global warming were found to be photochemical ozone production, acidification, eutrophication, marine aquatic ecotoxicity, human toxicity, freshwater aquatic ecotoxicity, and terrestrial ecotoxicity. The main factors associated with different environmental impacts and the environmental impacts themselves were found to differ across different phases. Some environmental impacts were shown to be sensitive to electricity, and the eutrophication potential and photochemical ozone creation potential showed the least sensitivity to all variables. To reduce the environmental impact of the anaerobic digestion–aerobic composting treatment technique, the energy structure and consumption of electricity, water, and diesel need to be optimized. [ABSTRACT FROM AUTHOR]

Published
2019
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45. Quantitative Whole Genome Sequencing of Circulating Tumor Cells Enables Personalized Combination Therapy of Metastatic Cancer

Author

Gulbahce, Natali, primary, Magbanua, Mark Jesus M., additional, Chin, Robert, additional, Agarwal, Misha R., additional, Luo, Xuhao, additional, Liu, Jia, additional, Hayden, Daniel M., additional, Mao, Qing, additional, Ciotlos, Serban, additional, Li, Zhenyu, additional, Chen, Yanxiang, additional, Chen, Xingpeng, additional, Li, Yuxiang, additional, Zhang, Rebecca Yu, additional, Lee, Katharine, additional, Tearle, Rick, additional, Park, Emily, additional, Drmanac, Snezana, additional, Rugo, Hope S., additional, Park, John W., additional, Drmanac, Radoje, additional, and Peters, Brock A., additional

Published
2017
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