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New Rural Community Construction or Retention Development:A Comparative Analysis of Rural Settlement Transition Mechanism in Plain Agriculture Area of China Based on Actor Network Theory

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Chinese Geographical science 2024年第3期34卷 436-452页

作者： QU Yanbo DONG Xiaozhen MA Wenqiu ZHAO Weiying School of Public Administration and policy Shandong University of Finance and EconomicsJinan 250014China Institute of Land science and policy Shandong University of Finance and EconomicsJinan 250014China College of Engineering China Agricultural UniversityBeijing 100083China

It is an important way to realize rural revitalization and sustainable development to guide rural settlement transition(RST)in an appropriate *** paper uses actor network theory(ANT)to construct a theoretical framework for the study of *** two typical villages with different transition paths in rural areas of North China Plain as examples,this paper reveals the mechanism of RST and makes a comparative *** results show that:1)after identifying problems and obligatory passage point,key actors recruit heterogeneous actors into the actor network by entrusting them with common interests,and realize RST under the system operation.2)Rural settlements under different transition paths have similarities in the problems to be solved,collective actions and policy factors,but there are differences in the transition process,mechanism and *** actor network and mechanism of RST through the path of new rural community construction are more complex and the transition effect is more *** contrast,the degree of RST of retention development path is limited if there is no resource and location advantage.3)Based on the applicable conditions of different paths,this paper designs a logical framework of‘Situation-Structure-Behavior-Result’to scientifically guide the identification of RST paths under the background of rural revitalization.

关键词： rural settlement transition(RST) actor network theory(ANT) transition path transition mechanism plain area China

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Origins of the problematic E in SEIR epidemic models

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Infectious Disease Modelling 2024年第3期9卷 673-679页

作者： Donald S.Burke Distinguished University Professor Emeritus of Health science and policy Department of EpidemiologySchool of Public HealthUniversity of PittsburghUSA

During the COVID-19 pandemic,over one thousand papers were published on“Susceptible-Exposed-Infectious-Removed”(SEIR)epidemic computational *** English word“exposed”in its vernacular and public health usage means a state of having been in contact with an infectious individual,but not necessarily *** contrast,the term“exposed”in SEIR modeling usage typically stands for a state of already being infected but not yet being infectious to others,a state more properly termed“latently infected.”In public health language,“exposed”means possibly infected,yet in SEIR modeling language,“exposed”means already *** paper retraces the conceptual and mathematical origins of this terminological disconnect and concludes that epidemic modelers should consider using the“SLIR”notational short-hand(L for Latent)instead of SEIR.

关键词： SEIR model Exposed Latent infection History Notation

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Unpacking the‘supply-utilization-demand’interplay:Keys to multifunctional sustainability in rural China

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Geography and Sustainability 2024年第3期5卷 445-458页

作者： Yanbo Qu Lingyun Zhan Qingqing Zhang Meijing Wu School of Economics Shandong University of Finance and EconomicsJinan 250014China School of Public Administration and policy Shandong University of Finance and EconomicsJinan 250014China Institute of Land science and policy Shandong University of Finance and EconomicsJinan 250014China

Sustainable rural development is predicated on a delicate balance between rural territorial functions and eco-logical *** various functions can catalyze economic growth in rural settings,aligning them with inherent ecological variables is *** exhaustive analysis of Beijing’s Pinggu District elucidated specific supply-demand thresholds and evaluated the adaptability of current utilization within these boundaries,culmi-nating in a novel optimization ***,while locals place significant emphasis on production functions,the area’s topography and soil characteristics present palpable challenges to achieving these *** discov-ered that‘shackle type’predominantly characterize individual rural territorial functions,while‘diversified weak function optimization type’define multifunctional aspects,showcasing varied development paths and uncov-ering potential strategies for sustainable *** study contributes a groundbreaking perspective to sustainable rural development,offering key insights and strategic recommendations for policy formulation.

关键词： Sustainable rural development Rural territorial function Adaptability Supply-demand thresholds Optimization strategy

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Catalysts or Barriers?The Impacts of Natural Disasters on Internal Labor Migration in China

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China & World Economy 2024年第2期32卷 160-199页

作者： Xingyu Zhou Liu Han Jidong Chen Department of Political science University of RochesterUS School of Finance Zhongnan University of Economics and LawChina School of Public policy and Management Tsinghua UniversityChina

This paper discusses ways in which negative economic shocks captured by natural disasters can shape internal labor migration in *** impact of negative economic shocks on migration depends on the combination of two opposite driving forces:(i)negative economic shocks can make staying in the affected area less profitable,thus enhancing returns to migration;(ii)the shocks can make it more difficult to migrate out,thus inducing a higher fixed cost of *** on a nationwide dataset of China,this paper shows that when natural disasters were not severe,they caused migration out of rural *** sufficiently severe damage,however,the negative effect of natural disasters could be mitigated by villages'prior migrant ***,with a severe shock,only clan members were able to migrate in response to natural disasters and enjoyed the complementary effects of prior migrant networks,as they could receive more help from social capital.

关键词： family clans internal labor migration migrant networks natural disasters

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A systematic review of climate change impacts,adaptation strategies,and policy development in West Africa

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Regional Sustainability 2024年第2期5卷 13-25页

作者： Camillus Abawiera WONGNAA Alex Amoah SEYRAM Suresh BABU Department of Agricultural Economics Agribusiness and ExtensionKwame Nkrumah University of Science and TechnologyKumasi00233Ghana International Food policy Research Institute Washington20005USA

Climate change studies are diverse with no single study giving a comprehensive review of climate change impacts,adaptation strategies,and policy development in West *** unavailability of an all-inclusive study to serve as a guide for practitioners affects the effectiveness of climate change adaptation strategies proposed and adopted in the West African *** purpose of this study was to review the impacts of climate change risks on the crop,fishery,and livestock sectors,as well as the climate change adaptation strategies and climate-related policies aimed at helping to build resilient agricultural production systems in West *** review process followed a series of rigorous stages until the final selection of 56 articles published from 2009 to ***,the results highlighted the adverse effects of climate change risks on food *** found a continuous decline in food crop ***,the livestock sector experienced morbidity and mortality,as well as reduction in meat and milk *** fishery sector recorded loss of fingerlings,reduction in fish stocks,and destruction of mariculture and *** West Africa,climate-smart agriculture technologies,physical protection of fishing,and inclusion of gender perspectives in programs appear to be the major adaptation *** study therefore recommends the inclusion of ecosystem and biodiversity restoration,weather insurance,replacement of unsafe vessels,and strengthening gender equality in all climate change mitigation programs,as these will help to secure enough food for present and future generations.

关键词： Climate change Climate extreme events Food security Adaptation strategies Climate-smart agriculture West Africa

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Prenatal multiple micronutrient-fortified balanced energy-protein supplementation and newborn telomere length and mitochondrial DNA content: a randomized controlled efficacy trial in rural Burkina Faso

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Food science and Human Wellness 2024年

作者： Giles T.Hanley-Cook Yuri Bastos-Moreira Dries S.Martens Trenton Dailey-Chwalibóg Laeticia Celine Toe Brenda de Kok Lionel Ouédraogo Alemayehu Argaw Kokeb Tesfamariam Patrick Kolsteren Lieven Huybregts Tim S.Nawrot Sarah De Saeger Marthe De Boevre Carl Lachat Department of Food Technology， Safety and Health， Faculty of Bioscience Engineering， Ghent University Center of Excellence in Mycotoxicology and Public Health， MYTOXSOUTH~(?) Coordination unit， Faculty of Pharmaceutical sciences， Ghent University Centre for Environmental sciences， Hasselt University unité Nutrition et Maladies Métaboliques， Institut de Recherche en sciences de la Santé (IRSS) Centre Muraz Center of Excellence in Mycotoxicology and Public Health， MYTOXSOUTH? Coordination unit， Faculty of Pharmaceutical sciences， Ghent University Nutrition， Diets， and Health unit， Department of Food and Nutrition policy， International Food policy Research Institute (IFPRI) Department of Public Health & Primary Care， University of Leuven Department of Biotechnology and Food Technology， Faculty of science， University of Johannesburg， Doornfontein Campus

Background: Evidence regarding the effectiveness of prenatal nutritional supplements has mainly considered anthropometric pregnancy outcomes. The effect on markers of health and disease， such as offspring telomere length (TL) and mitochondrial DNA content (mtDNAc) is unknown. Objectives: We assessed the efficacy of maternal multiple micronutrient (MMN)-fortified balanced-energy protein (BEP) and iron-folic acid (IFA) supplementation on newborn TL as a secondary outcome and mtDNAc as a non-declared outcome. Design: We conducted a randomized controlled trial in rural Burkina Faso， among pregnant females (15-40 years old) enrolled at 0.05) by adjusting the regression models for potential prognostic factors of study outcomes at enrollment. Exploratory analyses indicated higher， but non-significantly different mtDNAc among children born either small-for-gestational age， low birthweight， or preterm. Conclusions: Newborns from mothers who received daily nutritional supplements across gestation did not have different relative TL or mtDNAc.

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Do community responses influence OSS contributor retention? A survival analysis

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science China(Information sciences) 2024年第8期67卷 331-333页

作者： Zhe WANG Zhixing LI Yue YU School of Public policy and Management Tsinghua University College of Computer National University of Defense Technology

Open source software(OSS) projects usually employ a community-based model, where geographically distributed developers from around the world collaborate online [1].With the rise of social coding sites like Git Hub, contributing to OSS projects has become easier and more accessible, motivating many developers to join the OSS community [2]. The continued submission of high-quality contributions from these community developers has led to numerous corrections, improvements, and innovations in many successful OSS projects [1, 2].

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The potential impact of increased whole grain consumption among Chinese adults on reducing healthcare costs and carbon footprint

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Journal of Integrative Agriculture 2024年第8期23卷 2842-2852页

作者： Xin Zhang Jingjing Wang Fuli Tan Haixiu Gao Shenggen Fan Academy of Global Food Economics and policy China Agricultural UniversityBeijing 100083China

Excessive consumption of refined grains harms human health and ecosystem *** grains,as a healthy and sustainable alternative to refined grains,can benefit individual health by providing dietary fiber,B vitamins,and bioactive ***,they aid in improving the environment due to their higher extraction rate and lower carbon emission during the processing ***,few studies have attempted to evaluate the economic and social benefits of increasing the amount of whole grain in grain *** paper estimates the potential savings in healthcare costs and reduced food carbon footprints(CFs)that could result from a shift toward whole grain consumption following the Chinese Dietary Guidelines(CDG).We investigate hypothetical scenarios where a certain proportion(5–100%)of Chinese adults could increase their whole grain intakes as proposed by CDG to meet the average shortfall of 30.2 *** that case,the healthcare costs for associated diseases(e.g.,type2 diabetes mellitus(T2DM),cardiovascular disease(CVD),and colorectal cancer(CRC))are expected to reduce by a substantial amount,from USD 2.82 to 56.37 billion;the carbon emission levels are also projected to decrease by0.24–5.72 million *** study provides compelling evidence that advocating for the transition towards greater consumption of whole grain products could benefit individual health,the environment,and society,by reducing both healthcare costs and carbon emissions.

关键词： whole grains cost analysis public health life cycle assessment(LCA) carbon footprint

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Quantifying the Temporal and Spatial Spread of COVID-19:Empirical Evidence from Shanghai

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Journal of Systems science and Information 2024年第3期12卷 309-322页

作者： Haowen BAO Zishu CHENG Yuying SUN Yongmiao HONG Shouyang WANG Academy of Mathematics and Systems science Chinese Academy of SciencesBeijing 100190China School of Economics and Management and MOE Social Science Laboratory of Digital Economic Forecasts and Policy SimulationUniversity of Chinese Academy of SciencesBeijing 100190China School of Entrepreneurship and Management ShanghaiTech UniversityShanghai 201210China

The worldwide spread of COVID-19 has caused a grave threat to human life, health, and socio-economic development. It is of great significance to study the transmission mechanism of COVID-19 and evaluate the effect of epidemic prevention policies. This paper employs a spatial dynamic panel data(SDPD) model to analyze the temporal and spatial spread of COVID-19, incorporating the time-varying features of epidemic transmission and the impact of geographic *** studies on the COVID-19 outbreak in Shanghai during early 2022 show that the intra-regional transmission of COVID-19 dominated the cross-regional one. Additionally, strict policies are found to effectively reduce the transmission risk of COVID-19 and curb the spillover effect of the epidemic in Shanghai on other regions. Based on these results, we provide three policy suggestions. Furthermore,this research methodology can be extended to investigate other infectious diseases, thereby providing a scientific framework and theoretical basis for evaluating the spread risk of pandemics and formulating appropriate strategies.

关键词： COVID-19 spatial econometrics epidemic prevention policy dynamic

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Exploring the Lagged Correlation Between Baidu Index and Influenza-Like Illness-China,2014-2019

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China CDC weekly 2024年第26期6卷 629-634页

作者： Xuan Han Jiao Yang Yan Luo Dazhu Huo Xuya Yu Xuancheng Hu Ling Xin Liuyang Yang Hualei Xin Ting Zhang Zhongjie Li Weizhong Yang School of Population Medicine and Public Health Chinese Academy of Medical Sciences(CAMS)&Peking Union Medical CollegeBeijingChina School of Health policy and Management Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijingChina Department of management science and information system Faculty of Management and EconomicsKunming University of Science and TechnologyKunming CityYunnan ProvinceChina

Introduction:This study investigated the lagged correlation between Baidu Index for influenza-related keywords and influenza-like illness percentage(ILI%)across regions in *** aim is to establish a scientific foundation for utilizing Baidu Index as an early warning tool for influenza-like illness ***:In this study,data on ILI%and Baidu Index were collected from 30 provincial-level administrative divisions(PLADs)spanning April 2014 to March *** Baidu Index was categorized into Overall Index,Ordinary Index,Prevention Index,Symptom Index,and Treatment Index based on search query *** lagged correlation between the Baidu Index and ILI%was examined through the cross-correlation function(CCF)***:Correlating the Baidu Overall Index of 30 PLADs with ILI%revealed CCF values ranging from 0.46 to 0.86,with a median lag of 0.5 *** analysis indicated that the Prevention Index and Symptom Index exhibited quicker responses to ILI%,with median lags of−9 and−0.5 days,respectively,compared to 0 and 3 days for the Ordinary and Treatment *** median lag days between the Baidu Index and the ILI%were earlier in the northern PLADs compared to the southern ***:The Prevention and Symptom Indexes show promising predictive capabilities for influenzalike illness epidemics.

关键词： utilizing illness Baidu

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