@article{NdashimyeHebieTjaden2022,
  author    = {Ndashimye, Felix and Hebie, Oumarou and Tjaden, Jasper},
  title     = {Effectiveness of WhatsApp for measuring migration in follow-up phone surveys},
  series = {Social science computer review},
  journal   = {Social science computer review},
  publisher = {Sage},
  address   = {Thousand Oaks},
  issn      = {0894-4393},
  doi       = {10.1177/08944393221111340},
  pages     = {20},
  year      = {2022},
  abstract  = {Phone surveys have increasingly become important data collection tools in developing countries, particularly in the context of sudden contact restrictions due to the COVID-19 pandemic. So far, there is limited evidence regarding the potential of the messenger service WhatsApp for remote data collection despite its large global coverage and expanding membership. WhatsApp may offer advantages in terms of reducing panel attrition and cutting survey costs. WhatsApp may offer additional benefits to migration scholars interested in cross-border migration behavior which is notoriously difficult to measure using conventional face-to-face surveys. In this field experiment, we compared the response rates between WhatsApp and interactive voice response (IVR) modes using a sample of 8446 contacts in Senegal and Guinea. At 12\%, WhatsApp survey response rates were nearly eight percentage points lower than IVR survey response rates. However, WhatsApp offers higher survey completion rates, substantially lower costs and does not introduce more sample selection bias compared to IVR. We discuss the potential of WhatsApp surveys in low-income contexts and provide practical recommendations for field implementation.},
  language  = {en}
}
@article{MoldenhawerMorenoSchindleretal.2022,
  author    = {Moldenhawer, Ted and Moreno, Eduardo and Schindler, Daniel and Flemming, Sven and Holschneider, Matthias and Huisinga, Wilhelm and Alonso, Sergio and Beta, Carsten},
  title     = {Spontaneous transitions between amoeboid and keratocyte-like modes of migration},
  series = {Frontiers in Cell and Developmental Biology},
  volume    = {10},
  journal   = {Frontiers in Cell and Developmental Biology},
  publisher = {Frontiers Media},
  address   = {Lausanne},
  issn      = {2296-634X},
  doi       = {10.3389/fcell.2022.898351},
  pages     = {13},
  year      = {2022},
  abstract  = {The motility of adherent eukaryotic cells is driven by the dynamics of the actin cytoskeleton. Despite the common force-generating actin machinery, different cell types often show diverse modes of locomotion that differ in their shape dynamics, speed, and persistence of motion. Recently, experiments in Dictyostelium discoideum have revealed that different motility modes can be induced in this model organism, depending on genetic modifications, developmental conditions, and synthetic changes of intracellular signaling. Here, we report experimental evidence that in a mutated D. discoideum cell line with increased Ras activity, switches between two distinct migratory modes, the amoeboid and fan-shaped type of locomotion, can even spontaneously occur within the same cell. We observed and characterized repeated and reversible switchings between the two modes of locomotion, suggesting that they are distinct behavioral traits that coexist within the same cell. We adapted an established phenomenological motility model that combines a reaction-diffusion system for the intracellular dynamics with a dynamic phase field to account for our experimental findings.},
  language  = {en}
}
@phdthesis{Madoerin2022,
  author    = {Mad{\"o}rin, Anouk},
  title     = {Postcolonial surveillance},
  series = {Challenging Migration Studies},
  journal   = {Challenging Migration Studies},
  publisher = {Rowman \& Littlefield},
  address   = {London},
  isbn      = {978-1-5381-6503-4},
  school      = {Universit{\"a}t Potsdam},
  pages     = {xix, 167},
  year      = {2022},
  abstract  = {Postcolonial Surveillance investigates the long history of the European border regime, focusing on the colonial forerunners of today's border technologies. The book takes a longue dur{\´e}e perspective to uncover how Europe's colonial history continues to shape the high-tech political present and has morphed into EU border migration policies, border security, and surveillance apparatuses. It exposes the racial hierarchies and power relations that form these systems and highlights key moments when the past and present interact and collide, such as in panoptic surveillance, biopolitical registers, biometric sorting, and deterrent media infrastructure. The technological genealogies assembled in this book reveal the unacknowledged histories that had to be rejected for the seemingly clean, unbiased, and neutral technologies to emerge as such.},
  language  = {en}
}
@phdthesis{Šedova2022,
  author    = {Šedov{\´a}, Barbora},
  title     = {Heterogeneous effects of weather and climate change on human migration},
  doi       = {10.25932/publishup-53673},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-536733},
  school      = {Universit{\"a}t Potsdam},
  pages     = {xix, 284},
  year      = {2022},
  abstract  = {While estimated numbers of past and future climate migrants are alarming, the growing empirical evidence suggests that the association between adverse climate-related events and migration is not universally positive. This dissertation seeks to advance our understanding of when and how climate migration emerges by analyzing heterogeneous climatic influences on migration in low- and middle-income countries. To this end, it draws on established economic theories of migration, datasets from physical and social sciences, causal inference techniques and approaches from systematic literature review. In three of its five chapters, I estimate causal effects of processes of climate change on inequality and migration in India and Sub-Saharan Africa. By employing interaction terms and by analyzing sub-samples of data, I explore how these relationships differ for various segments of the population. In the remaining two chapters, I present two systematic literature reviews. First, I undertake a comprehensive meta-regression analysis of the econometric climate migration literature to summarize general climate migration patterns and explain the conflicting findings. Second, motivated by the broad range of approaches in the field, I examine the literature from a methodological perspective to provide best practice guidelines for studying climate migration empirically. Overall, the evidence from this dissertation shows that climatic influences on human migration are highly heterogeneous. Whether adverse climate-related impacts materialize in migration depends on the socio-economic characteristics of the individual households, such as wealth, level of education, agricultural dependence or access to adaptation technologies and insurance. For instance, I show that while adverse climatic shocks are generally associated with an increase in migration in rural India, they reduce migration in the agricultural context of Sub-Saharan Africa, where the average wealth levels are much lower so that households largely cannot afford the upfront costs of moving. I find that unlike local climatic shocks which primarily enhance internal migration to cities and hence accelerate urbanization, shocks transmitted via agricultural producer prices increase migration to neighboring countries, likely due to the simultaneous decrease in real income in nearby urban areas. These findings advance our current understanding by showing when and how economic agents respond to climatic events, thus providing explicit contexts and mechanisms of climate change effects on migration in the future. The resulting collection of findings can guide policy interventions to avoid or mitigate any present and future welfare losses from climate change-related migration choices.},
  language  = {en}
}