This study explores one of the least studied components of forced migrants' journeys—the internal political conditions of the host/transit countries. Using the social navigation approach, we demonstrate how these conditions influence the progress or halt of migration journeys of asylum seekers. We interviewed asylum seekers from Eritrea and Sudan about their journey from their country of origin. Based on these life stories, we derived three salient political themes affecting their journeys: state political instability, the state of freedoms, and lasting persecution. We conclude with insights into the influence of the political component along the journey.
Anna Kozell, Aleksei Solomonov, Roman Gaidarov, Doron Benyamin, Irit Rosenhek-Goldian, Harry Mark Greenblatt, Yaakov Levy, Ariel Amir, Uri Raviv, and Ulyana Shimanovich. 2024. “Sound-mediated nucleation and growth of amyloid fibrils.” Proceedings of the National Academy of Sciences, 121, 34, Pp. e2315510121.
Muzhi Li, Samuel Johnson, Lidon Gil-Escrig, Maayan Sohmer, Carlos A. Figueroa Morales, Hongki Kim, Siraj Sidhik, Aditya Mohite, Xiwen Gong, Lioz. Etgar, Henk J. Bolink, Axel Palmstrom, Michael D. McGeheeb, and Nicholas Rolston. 3/12/2024. “Strategies to improve the mechanical robustness of metal halide perovskite solar cells.” Energy Adv, 2024, 3, Pp. 273–280.
A recurrent theme of narratives by concentration-camp survivors is reciting poetry. For intellectuals in the camps, reciting verses was an aid to survival, aloophole of mental freedom, available only when the prisoners were not being driven to depletion at “general works.” Poetry also facilitated genuine human contact, helped the prisoners inscribe themselves into specific historical and cultural traditions, and re-mediated the verses that belonged to those traditions. The latter function of poetry recital was operative not only during the imprisonments but also during the composition of the narratives after the liberation: the memoirists not only found meanings in the cultural traditions on which their sense of identity depended but also helped to maintain these traditions for their own sake.
This study examines the impact of spontaneous interactions between Jewish and Palestinian students in a divided city, focusing on how these interactions influence attitudes, feelings, and perceptions. Drawing on the contact hypothesis and third-place theory, which posit that interactions in neutral spaces can reduce prejudice, we contribute to ongoing debates surrounding these theories. Our research incorporates critical perspectives, acknowledging the potential for depoliticization of space and conflict suppression in settler-colonial and divided cities. Using an online survey administered to 1,951 university students, we found that Jewish and Palestinian students who engage in spontaneous interactions with the other group during their studies exhibit more positive attitudes towards them. These findings highlight the importance of re-evaluating the concept of third places in divided cities, particularly in contexts marked by conflict and asymmetry. We conclude by offering practical recommendations based on our results.
Synapses are a key component of neural circuits, facilitating rapid and specific signalling between neurons. Synaptic engineering — the synthetic insertion of new synaptic connections into in vivo neural circuits — is an emerging approach for neural circuit interrogation. This approach is especially powerful for establishing causality in neural circuit structure–function relationships, for emulating synaptic plasticity and for exploring novel patterns of circuit connectivity. Contrary to other approaches for neural circuit manipulation, synaptic engineering targets specific connections between neurons and functions autonomously with no user-controlled external activation. Synaptic engineering has been successfully implemented in several systems and in different forms, including electrical synapses constructed from ectopically expressed connexin gap junction proteins, synthetic optical synapses composed of presynaptic photon-emitting luciferase coupled with postsynaptic light-gated channels, and artificial neuropeptide signalling pathways. This Perspective describes these different methods and how they have been applied, and examines how the field may advance. Synaptic engineering involves the synthetic insertion of new synapses between neurons in vivo. In this Perspective, Rabinowitch, Colón-Ramos and Krieg explore this emerging approach for studying neural circuits, describing the different methods that have been used and how they have been implemented.
Abstract Simulating mixed-state evolution in open quantum systems is crucial for various chemical physics, quantum optics, and computer science applications. These simulations typically follow the Lindblad master equation dynamics. An alternative approach known as quantum state diffusion unraveling is based on the trajectories of pure states generated by random wave functions, which evolve according to a nonlinear Itô-Schrödinger equation (ISE). This study introduces weak first- and second-order solvers for the ISE based on directly applying the Itô-Taylor expansion with exact derivatives in the interaction picture. We tested the method on free and driven Morse oscillators coupled to a thermal environment and found that both orders allowed practical estimation with a few dozen iterations. The variance was relatively small compared to the linear unraveling and did not grow with time. The second-order solver delivers much higher accuracy and stability with bigger time steps than the first-order scheme, with a small additional workload. However, the second-order algorithm has quadratic complexity with the number of Lindblad operators as opposed to the linear complexity of the first-order algorithm.
The international workshop “Interdisciplinary life of microbes: from single cells to multicellular aggregates,” following a virtual preassembly in November 2021, was held in person in Dresden, from 9 to 13 November 2022. It attracted not only prominent experts in biofilm research but also researchers from broadly neighboring disciplines, such as medicine, chemistry, and theoretical and experimental biophysics, both eukaryotic and prokaryotic. Focused brainstorming sessions were the special feature of the event and are at the heart of this commentary.
