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Journal of Integrative Agriculture 2014年第7期13卷 1418-1431页

作者： kevin Z.chen Claire Hsu International Food Policy Research Institute-Beijing Office

Climate change poses a serious threat to the future food security of China, which is among the most disaster-prone countries in the world. This paper discusses the implications of climate change for China＇s agricultural sector. Its main objectives are to identify the agricultural risks associated with climate change, to introduce a conceptual framework for agricultural climate risk management and to enumerate key adaptation strategies, challenges, and recommendations.

关键词： climate change food security risk management agricultural development

Food safety regulatory systems in Europe and China:A study of how co-regulation can improve regulatory effectiveness

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Journal of Integrative Agriculture 2015年第11期14卷 2203-2217页

作者： kevin chen WANG Xin-xin SONG Hai-ying Beijing Office International Food Policy Research Institute School of Economics and International Trade Zhejiang University of Finance and Economics International Business Administration College Zhejiang International Studies University

Food safety has received a great deal of attention in both developed and developing countries in recent years. In China, the numerous food scandals and scares that have struck over the past decade have spurred significant food safety regulatory reform, which has been increasingly oriented towards the public-private partnership model adopted by the Europe Union＇s （EU） food safety regulatory system. This paper analyzes the development of both the EU＇s and China＇s food safety regu- latory systems, identifies the current challenges for China and additionally considers the role of public-private partnership. The success of co-regulation in the food regulatory system would bring significant benefits and opportunities for China. Finally, this paper recommends additional measures like training and grants to improve the private＇s sector effectiveness in co-regulating China＇s food safety issues.

关键词： food safety co-regulation public-private partnership Food Safety Law of China European Union China

BUILDING CLIMATE-RESILIENT FOOD SYSTEMS IN EAST AND SOUTHEAST ASIA:VULNERABILITIES,RESPONSES AND FINANCING

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Frontiers of Agricultural Science and Engineering 2023年第1期10卷 16-30页

作者： Yunyi ZHOU Ziqi chen kevin Z.chen China Academy for Rural Development and School of Public Affairs Zhejiang UniversityHangzhou 310058China International Food Policy Research Institute Washington DC 20005USA

Food system resilience to climate change is uniquely imperative for bringing Sustainable Development Goals within reach and leaving no one *** systems in East and Southeast Asia are interacting with planetary boundaries and are adversely affected by extreme weather-related events.A practical question for East and Southeast Asian stakeholders is how to foster climate-resilient food systems in the face of lingering food system vulnerabilities and policy *** paper reviews food system vulnerabilities and policy responses to climate *** the policy-based review,this paper compares the economy-wide and agriculture-specific targets of low-carbon development across East and Southeast *** China and member states of the Association of Southeast Asia Nations as case studies,multilevel policies in building and financing climate-resilient food systems are further *** findings confirm significant differences in agriculture-specific emission goals and public financing supports across East and Southeast Asian *** an objective to break practical barriers and finance climate-resilient food systems for the future,this paper recommends defining agriculture-specific greenhouse gas emission goals,reorienting the public finance scheme and enhancing mechanisms for the synergy of public and private resources.

关键词： food systems climate change East policy resilience and Southeast Asia

Elite capture,the“follow-up checks”policy,and the targeted poverty alleviation program:Evidence from rural western China

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Journal of Integrative Agriculture 2021年第4期20卷 880-890页

作者： chenG Xiao-yu WANG Jian-ying kevin Z.chen Institute of Agricultural Economics and Development Chinese Academy of Agricultural SciencesBeijing 100081P.R.China School of Economics Zhejiang University of Finance&EconomicsHangzhou 310018P.R.China China Academy for Rural Development Zhejiang UniversityHangzhou 310058P.R.China International Food Policy Research Institute WashingtonD.C.20005USA

Decentralized methods for targeting poverty are widely adopted in developing countries to improve the performance of various poverty alleviation programs.A common challenge for implementing successful decentralized targeting is the existence of elite *** has recently implemented a nationwide decentralized poverty targeting program,the targeted poverty alleviation(TPA)policy,to achieve the national goal of eliminating absolute poverty by the end of *** the largest decentralized poverty targeting program in the world,TPA's successful implementation was believed to be threatened by elite capture in some earlier *** 2015,a targeting correction mechanism,called"follow-up checks"policy,has been *** the"follow-up checks"policy,the elites and other ineligible households who receive benefits under TPA were removed from the *** paper investigates the elite capture phenomenon in TPA using village census data from a poverty-stricken county in 2017-two years after implementing the"follow-up checks"*** find no evidence of elite capture in *** elites are unlikely to become beneficiaries or receive more benefits than *** results contradict earlier findings that reported elite capture in *** argue that the reason is the accountability emphasized by the central government in the"follow-up checks"*** findings imply that having proper accountability is critical for improving targeting performance by global antipoverty initiatives.

关键词： elite capture decentralized poverty targeting targeted poverty alleviation the"follow-up checks"policy accountability

Factors affecting the adoption of on-farm milk safety measures in Northern China-An examination from the perspective of farm size and production type

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Journal of Integrative Agriculture 2019年第2期18卷 471-481页

作者： YANG Xin-ran kevin Z.chen KONG Xiang-zhi Institute of Agricultural Economics and Development Chinese Academy of Agricultural SciencesBeijing 100081P.R.China China Academy for Rural Development Zhejiang UniversityHangzhou 310058P.R.China International Food Policy Research Institute WashingtonDC 20005USA School of Agricultural Economics and Rural Development Renmin University of ChinaBeijing 100872P.R.China

The cow stock of smallholder farmers with less than 100 cows still accounted for nearly 50% of total cows in China. Since the milk scandal occurred in 2008, raw milk safety has become focus for the sound development of the Chinese dairy industry. Adoption of on-farm milk safety measures by smallholders is a key for ensuring milk safety, and these measures are largely voluntary in nature. The recent survey conducted in northern China reveals that an overall adoption rate of various milk safety measures by smallholders is close to 48% with wide variations across the dairy farmers. We employ the Poisson regression model to study the determinants of farmers' adoption of voluntary milk safety measures. Compared with backyard dairy farmers, dairy complex and scaled dairy farms adopted more milk safety measures. Moreover, the empirical result indicates that farmers' adoption of raw milk safety measures is positively affected by farm size. These findings suggest that the changing dairy production structure towards larger farms and away from backyard dairy farming prompts smallholder dairy farmers to adopt more raw milk safety measures. This lends some support to the role of recent policy initiatives towards larger farms and away from backyard dairy farming on increasing the farmers' milk safety practices and reducing on-farm incidence of milk safety.

关键词： raw milk safety farm size production type

Overcoming the limitations of gallium oxide through heterogeneous integration

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Science China(Physics,Mechanics & Astronomy) 2021年第1期64卷 118-119页

作者： Yuhao Zhang kevin Jchen Center for Power Electronics Systems Virginia Polytechnic and State UniversityBlacksburgVA24060USA Departmnet of Electronic and Computer Engineering The Hong Kong University of Science and TechnologyHong KongChina

Power electronics,processing over 50%of world's electric energy,enables very efficient electric energy conversion for a wide range of applications such as electric vehicles,data centers,autonomous driving,robotics and smart *** availability of low-cost,efficient,and reliable power semiconductor devices that can conduct high current,block high voltage,and switch at high frequencies are key to improving the performance of power electronics systems.

关键词： integration enable autonomous

Impacts of Import Refusals on Agricultural Exports duri ng Pan demies: Implicatio ns for China

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China & World Economy 2021年第4期29卷 113-141页

作者： Rui Mao Ziyi Jia kevin chen China Academy for Rural Development Zhejiang UniversityChina International Food Policy Research Institute(IFPRI) USA

Pandemic outbreaks disrupt agricultural *** possible strengthening of import barriers to products from countries at the epicenter of a pandemic by their trade partners could aggravate this *** paper examines the responses of the US Food and Drug Administration(FDA),import refusals,and subsequent trade impacts on the agricultural exports from the developing countries that were the epicenters of four pandemics in the past two *** monthly data for the period 2002-2020,we find increased import refusals and amplified trade-impeding impacts on agricultural exports during pandemic *** import refusals and the amplification of the trade-impeding effect of import refusals were especially large when China was the *** further examine possible differences in these results across products and FDA inspection methods,and the main conclusions remain *** paper offers a better understanding of the economic outcomes of pandemic outbreaks and provides policy suggestions for China.

关键词： agricultural export developing countries FDA import refusal pandemic outbreak

Thouless pumping in disordered photonic systems

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Light(Science & Applications) 2020年第1期9卷 295-301页

作者： Alexander Cerjan Mohan Wang Sheng Huang kevin P.chen Mikael C.Rechtsman Department of Physics The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Electrical and Computer Engineering University of PittsburghPittsburghPA 15261USA

Thouless charge pumping protocols provide a route for one-dimensional systems to realize topological ***,using arrays of evanescently coupled optical waveguides,we experimentally demonstrate bulk Thouless pumping in the presence of *** degree of pumping is quite tolerant to significant deviations from adiabaticity as well as the addition of system disorder until the disorder is sufficiently strong to reduce the bulk mobility gap of the system to be on the scale of the modulation frequency of the ***,we show that this approach realizes near-full-unit-cell transport per pump cycle for a physically relevant class of localized initial system ***,temporally pumped systems can potentially be used as a design principle for a new class of modulated slow-light devices that are resistant to system disorder.

关键词： pumping pumped pump

Rural E-commerce and County Economic Development in China

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China & World Economy 2023年第5期31卷 26-60页

作者： Qiuxia Qin Hongdong Guo Xinjie Shi kevin chen China Academy for Rural Development School of Public AffairsZhejiang UniversityChina China Academy for Rural Development School of Public AffairsChina and Research Center for Common ProsperityFuture Regional Development LaboratoryInnovation Center of Yangtze River DeltaZhejiang UniversityChina China Academy for Rural Development School of Public AffairsZhejiang UniversityChina and International Food Policy Research InstituteEast and Central Asia OfficeChina

With the proliferation of information and communication technology in rural areas,rural e-commerce has gradually become a new economic phenomenon in China. Usingthe national rural e-commerce comprehensive demonstration policy as a quasi-naturalexperiment, this study examines the causal linkage between rural e-commerce andcounty-level economic development in China. Its findings, which draw on county-levelpanel data from 2011 to 2018, indicate that the policy had a positive effect on the countyleveleconomy in China, resulting in an overall increase in county GDP by 3.5 percent(0.7 percent annually). Our analysis further shows that the impact of the policy diferedalong the region and human capital dimensions. Further analysis reveals that industrialstructure and nonagricultural employment were the main channels for the policy toexert a county-level economic impact. Infrastructure improvement in China also playsan important role. The findings emphasize the importance of advancing e-commerce inrural areas to stimulate county-level economic development.

关键词： county economy e-commerce quasi-natural experiment rural China

Novel technique for a symptomatic subscapularis herniation through a scapu-lar defect

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World Journal of Orthopedics 2017年第2期8卷 208-211页

作者： Luis Grau kevin chen Ali A Alhandi Benjamin Goldberg Department of Orthopaedic Surgery University of MiamiJackson Memorial Hospital Department of Orthopaedic Surgery University of Illinoi at Chicago

Fractures of the scapula are rare and have been reported to account for only 1% of all fractures and 3%-5% of upper extremity fractures. Several studies have reported successful outcomes with non-operative treatment of scapula fractures. Although non-operative treatments are successful in a very high percentage of patients, very few cases of non-union of scapular body fractures have been reported. In our review of the literature, we found two case reports of scapular body fractures developed into non-unions. In both of these cases, open reduction and internal fixation with reconstruction plates and bone graft was successful at eliminating pain and restoring function. This is a case report of a patient with a symptomatic, extra-articular scapular body defect from a non-union that was treated successfully with an acellular dermal extracellular matrix and bone graft using a novel

关键词： Scapular fractures Mesh repair Non-union Bone graft Acellular dermal extracellular matrix