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Spatiotemporal patterns and influencing factors of human migration networks in China during COVID-19

Geography and Sustainability 2021年第4期2卷 264-274页

作者： Debin Lu Wu Xiao Guoyu Xu Lin Ha Dongyang Yang Department of Land Management Zhejiang UniversityHangzhou 310058China Key Laboratory of Watershed Geographic Sciences Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China School of Urban and Regional Science East China Normal UniversityShanghai 200241China Key Research Institute of Yellow River Civilization and Sustainable Development Henan UniversityKaifeng 475004China

The social lockdowns and strict control measures initiated to combat the COVID-19 pandemic have had an impact on human *** this study,big data was used to analyze spatial patterns of population migration in 369 Chinese cities during the COVID-19 outbreak and to identify determinants of population *** found that the overall migration intensity decreased by 39.87%compared to the same period in 2019 prior to the COVID-19 ***-19 severely affected human *** public holidays and weekends have impacted human migration from the perspective of time *** spatial pattern of China’s population distribution presents a diamond structure that is dense in the east and sparse in the west,which is bounded by the Hu line and the cities such as Beijing,Shanghai,Guangzhou and Chengdu as nodes to *** is a strong consistency between the population distribution center and the level of urban *** urban human migration network is centered on provincial capitals or municipalities at the regional scale,showing a prominent"center-periphery"***-19 dispersed the forces of human migration in time and changed the direction of human migration in *** it did not change the pattern of national *** most critical factors influencing mass migration are income levels and traditional *** study reveals the impacts of major public health emergencies on conventional migration patterns and provides a scientific theoretical reference for COVID-19 prevention and control.

关键词： human migration COVID-19,Influencing factors Baidu big data

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Technology diffusion and population migration reflected in blade technologies in northern China in the Late Pleistocene

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Science China Earth Sciences 2016年第8期59卷 1540-1553页

作者： LI Feng CHEN FuYou WANG YingHua GAO Xing Key Laboratory of Vertebrate Evolution and human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing 100044 China Inner Mongolia Museum Hohhot 010010 China

In recent years, the origin and evolution of modern human behaviors have become a common topic of research in Paleolithic archaeology. One important part of modern human behavior, blade technology, was once thought to be unique to modern humans. Recent studies have suggested that variations in blade technology do not fully correspond to modern populations. However, the standardization, diversity, discontinuity in terms of time distribution, and differences in spatial distribution of blade technology give it an important role in discussions of modes of adaptation, diffusion of technology, and population migration of hominins. By categorizing the major blade assemblages in China, we show that there were two blade reduction methods in northern China: the Levallois method and the prismatic method. Dating back 40000–30000 years, the Levallois and prismatic blade method combined to form the characteristics of the early stage of the Upper Paleolithic. Artifacts bearing such characteristics are located in Northwest China, Northeast China, and the Qinghai-Tibet Plateau. The unearthed blades are similar in technological organization and are connected geographically with those discovered in Siberia and Mongolia, which also indicates a distinct border from those discovered in northern China. This fact is suggestive of population immigration. About 29000–25000 years ago, a combination of prismatic blades and microblades was developed in the hinterland of China; however whether it can be regarded as the representative of population migration or only a technological adaption remains undetermined. We suggest that the system of production of different blades should be distinguished in the study of blade assemblages and that different blade methods should not be integrated into a single technical system to discuss technology diffusion and population dispersal.

关键词： North China Late Pleistocene Blade technology Technology diffusion human migration

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Food and Nutritional Security in the Refugee Women’s Life Narratives

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Food and Nutrition Sciences 2023年第11期14卷 1031-1042页

作者： Juliana Vidal Vieira Guerra Valdecyr Herdy Alves Brenda Caroline Martins da Silva Tatiana do Socorro dos Santos Calandrini Giovanna Rosario Soanno Marchiori Ediane de Andrade Ferreira Maria Bertilla Lutterbach Riker Branco Diego Pereira Rodrigues Departamento de Nutriç &#227o Aplicada Instituto de Nutri&#231&#227o Universidade do Estado do Rio de Janeiro Rio de Janeiro Brasil Programa Acadêmico em Ciências do Cuidado em Saúde Escola de Enfermagem Aurora de Afonso Costa Universidade Federal Fluminense Niterói Brasil Instituto de Ciências da Saúde Universidade Federal do Pará Belém Brasil Centro de Ciências da Saúde Universidade Federal de Roraima Boa Vista Brasil

Objective: To understand, based on the life narratives of refugee women, food and nutritional security. Method: Qualitative, descriptive, exploratory study, Narratives of life method, by Daniel Bertaux. Conducted with 11 participants, refugee women residing in the state of Rio de Janeiro, Brazil. Results: The meanings and feelings evidenced in the life narratives of refugee women expressed the insecurities and weaknesses with food in the resettlement. Final Considerations: Given the meanings and feelings regarding food in the refuge, it is expected that the present study will contribute to the elaboration of new action plans and intersectoral public policies of agile action to meet the demands of the refugee population, in the attempt to mitigate starvation, poverty, social differences and the compromised health status of the refugee population.

关键词： Food Security Feeding Behavior Refugees human migration human Right to Adequate Food

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