Results 91 to 100 of about 642,165 (350)
Ohmic Response in BiFeO3 Domain Walls by Submicron‐Scale Four‐Point Probe Resistance Measurements
Advanced Electronic Materials, EarlyView.Lateral transport measurements of multiferroic domain walls (DWs) in BiFeO3 thin films employing a novel, lithography‐free method are presented. Using a submicron‐scale multi‐point probe (MPP), ohmic DW conduction behavior is demonstrated, including the first collinear, four‐point resistivity value of a single DW, free of contact resistances.
Jan L. Rieck +8 more
wiley +1 more source
How to Live on Mars With a Proper Circadian Clock?
Frontiers in Astronomy and Space Sciences, 2022 Intrinsic circadian clocks generate circadian rhythms of physiology and behavior, which provide the capabilities to adapt to cycling environmental cues that result from the self-rotation of the Earth.
Rujia Luo +3 more
doaj +1 more source
Land Cover Mapping in Limited Labels Scenario: A Survey [PDF]
arXiv, 2021 Land cover mapping is essential for monitoring global environmental change and managing natural resources. Unfortunately, traditional classification models are plagued by limited training data available in existing land cover products and data heterogeneity over space and time.
arxiv
Selection of the Mars Pathfinder landing site [PDF]
Journal of Geophysical Research: Planets, 1997 The Mars Pathfinder spacecraft will land on a depositional fan near the mouth of the catastrophic outflow channel, Ares Vallis (19.5°N, 32.8°W). This site offers the prospect of analyzing a variety of rock types from the ancient cratered highlands, intermediate‐age ridged plains, and reworked channel deposits.
Matthew P. Golombek +3 more
openaire +2 more sources
Successive Convexification for 6-DoF Mars Rocket Powered Landing with Free-Final-Time [PDF]
, 2018 In this paper, we employ successive convexification to solve the minimum-time 6-DoF rocket powered landing problem. The contribution of this paper is the development and demonstration of a free-final-time problem formulation that can be solved ...
Michael Szmuk, Behçet Açikmese
semanticscholar +1 more source
Transport Resistance Dominates the Fill Factor Losses in Record Organic Solar Cells
Advanced Energy Materials, EarlyView.Organic photovoltaics are a promising solar cell technology, but even the record devices with 20% efficiency have significant fill factor losses due to low active layer conductivities. In this Perspective, the authors describe the origin of these losses, discuss experimental methods for their quantification, and explain how to minimize them to optimize
Chen Wang +6 more
wiley +1 more source
Map of tectonic shortening structures in Chryse Planitia and Arabia Terra, Mars
Journal of Maps, 2023 We present a 1:4,000,000 scale map of tectonic landforms in Chryse Planitia and Arabia Terra, on either side of Mars’ dichotomy. Our study area is a ∼3 million km2 region, transitional between Mars’ highlands and lowlands including Oxia Planum, the ...
Savana Z. Woodley +3 more
doaj +1 more source
Hundred Drones Land in a Minute [PDF]
arXiv, 2020 Currently, drone research and development has received significant attention worldwide. Particularly, delivery services employ drones as it is a viable method to improve delivery efficiency by using a several unmanned drones. Research has been conducted to realize complete automation of drone control for such services.
arxiv
A Machine Learning Enhanced Algorithm for the Optimal Landing Problem [PDF]
arXiv, 2022 We propose a machine learning enhanced algorithm for solving the optimal landing problem. Using Pontryagin's minimum principle, we derive a two-point boundary value problem for the landing problem. The proposed algorithm uses deep learning to predict the optimal landing time and a space-marching technique to provide good initial guesses for the ...
arxiv
The impact of HPAI trade restrictions on U.S. poultry exports in 2022–23
Applied Economic Perspectives and Policy, EarlyView.Abstract In early 2022, APHIS confirmed a case of highly pathogenic avian influenza (HPAI), signaling the beginning of an extensive HPAI outbreak. Since the start of the outbreak in 2022, more than 105 million birds across commercial and backyard operations in 48 states have been affected. Many countries, including top importers of U.S.
Samantha L. Padilla +2 more
wiley +1 more source