Results 91 to 100 of about 2,061,225 (235)

Distributed angle‐only orbit determination algorithm for non‐cooperative spacecraft based on factor graph

IET Radar, Sonar & Navigation
Bayesian filtering provides an effective approach for the orbit determination of a non‐cooperative target using angle measurements from multiple CubeSats.
Zhixun Zhang, Keke Zhang, Leizheng Shu, Zhencai Zhu, Meijiang Zhou   +4 more
doaj   +1 more source

Engineering stimuli‐responsive shape‐morphing through high‐resolution 4D printing

Responsive Materials, EarlyView.
This review summarizes recent progress in high‐resolution 4D printing with smart materials and micro/nanoscale techniques. It covers actuation strategies, key applications, and future challenges for scalable, precise shape‐morphing systems. Abstract 4D printing extends conventional additive manufacturing (AM) by enabling dynamic shape‐morphing ...
Shuheng Li, Ming Gao, Wenwan Shi, Xiaolu Sun, Yuning Zhou, Lihao Liu, Ji Qiu, Xiaoxiang Gao, Jing Sun, Xiaojiang Liu, Zhongze Gu   +10 more
wiley   +1 more source

Cluster as current sheet surveyor in the magnetotail [PDF]

Annales Geophysicae, 2013
A novel analysis technique is presented to estimate the current sheet thickness unambiguously and directly, without associating time series data with spatial structure.
Y. Narita, R. Nakamura, W. Baumjohann
doaj   +1 more source

X‐ray and γ‐ray Sensing from Aqueous‐Based Lead Sulfide Telluride Nanocomposites

Small, EarlyView.
PbSxTey nanoparticles integrate into flexible, size‐scalable aramid polymeric scaffolds, forming percolation paths capable of efficiently transporting the electrons and holes created by penetrating photonic interactions. The resulting nanosemiconductor‐nanofiber composite forms the basis for room‐temperature spectroscopic sensors of X‐rays and γ‐rays ...
Vinh‐Dien Le, Drew A. Vecchio, Ayse D. Uyulur, Ill‐hyuk Han, Andrei M. Ursu, Geehyun Kim, Mark D. Hammig   +6 more
wiley   +1 more source

Self‐Driving Microscopes: AI Meets Super‐Resolution Microscopy

Small Methods, EarlyView.
This review examines the use of machine learning to automate super‐resolution optical microscopy, enabling the microscope to autonomously make decisions on what, when, and how to image. By eliminating the need for human intervention, this approach has the potential to enhance the versatility and accessibility of super‐resolution microscopy.
Edward N. Ward, Anna Scheeder, Max Barysevich, Clemens F. Kaminski   +3 more
wiley   +1 more source

Embedded Interactions and Selective Disclosure: Network Effects on Conversations aboard Skylab

Symbolic Interaction, EarlyView.
How do absent others influence our interactions? We argue in this paper that interactions are embedded within networks formed by chains of specific relationships between known third parties. The anticipation of future interactions with external others conditions our interpretation of the current situation and affects our behavior in the interaction. We
Michael Schultz, Leslie DeChurch, Noshir Contractor   +2 more
wiley   +1 more source

Small-scale dipolarization fronts in the Earth′s magnetotail

Earth and Planetary Physics, 2019
Previous studies suggest that dipolarization fronts (DFs) are 1 to 3RE (RE is the earth radius) wide in the dawn-dusk direction. Recent kinetic simulations have found that DFs may break up into small-scale structures after they are produced by ...
Jing Huang, Meng Zhou, HuiMin Li, XiaoHua Deng, Jiang Liu, ShiYong Huang   +5 more
doaj   +1 more source

Transition from substorm growth to substorm expansion phase as observed with a radial configuration of ISTP and Cluster spacecraft

, 2005
Transition from the growth phase to the substorm expansion during a well-isolated substorm with a strong growth phase is investigated using a unique radial (THEMIS- like) spacecraft constellation near midnight, including the probing of the tail current ...
V. Sergeev, M. Kubyshkina, Wolfgang Baumjohann, R. Nakamura, O. Amm, T. Pulkkinen, V. Angelopoulos, S. Mende, B. Klecker, T. Nagai, J. Sauvaud, J. Slavin, M. Thomsen   +12 more
semanticscholar   +1 more source

EU Space Law and Earth's Boundaries: Integrating Environmental Impact Assessment and Corporate Due Diligence

Global Policy, EarlyView.
ABSTRACT The European Union's proposed Space Law aims to establish a unified approach for sustainable space activities across the EU. While the EU's satellite constellations contribute to sustainability efforts, they can also have negative environmental impacts.
Elena Cirkovic, Vitali Braun
wiley   +1 more source

Impact of Climate Change on Labor Market Dynamics: Evidence From Kazakhstan

Agricultural Economics, EarlyView.
ABSTRACT This paper examines how drought shocks affect formal employment in Kazakhstan. We combine remote sensing data on drought severity—the Palmer Drought Severity Index (PDSI)—with quarterly firm‐level administrative employment records from 2012 to 2022.
Dinara Alpysbayeva, Dana Bazarkulova, Kirsten de Beurs, Galiya Sagyndykova   +3 more
wiley   +1 more source