Results 71 to 80 of about 642,165 (350)
Housing the homeless: How revisiting the 1940s assists the struggle
Australian Journal of Social Issues, Volume 57, Issue 4, Page 798-811, December 2022., 2022 Abstract A major obstacle in the political work of housing the homeless is convincing voters and lawmakers that housing is a right and should be available to all without conditions. This paper seeks to assist that project by showing that the tension between rights and conditions has a history. It focusses on the pivotal 1940s, which saw the first major
Anne O'Brien
wiley +1 more source
Inclined Quadrotor Landing using Deep Reinforcement Learning [PDF]
, 2021 Landing a quadrotor on an inclined surface is a challenging maneuver. The final state of any inclined landing trajectory is not an equilibrium, which precludes the use of most conventional control methods. We propose a deep reinforcement learning approach to design an autonomous landing controller for inclined surfaces.
arxiv +1 more source
NASA's Phoenix spacecraft lands on Mars [PDF]
Eos, Transactions American Geophysical Union, 2008 After a 9.5‐month, 679‐million‐kilometer flight from Florida, NASA's Phoenix spacecraft made a soft landing in Vastitas Borealis in Mars's northern polar region on 25 May. The lander, whose camera already has returned some spectacular images, is on a 3‐month mission to examine the area and dig into the soil of this site—chosen for its likelihood of ...
Mohi Kumar, Randy Showstack
openaire +2 more sources
Meteorological Predictions for Mars 2020 Perseverance Rover Landing Site at Jezero Crater
Space Science Reviews, 2020 The Mars Regional Atmospheric Modeling System (MRAMS) and a nested simulation of the Mars Weather Research and Forecasting model (MarsWRF) are used to predict the local meteorological conditions at the Mars 2020 Perseverance rover landing site inside ...
J. Pla‐García +15 more
semanticscholar +1 more source
Insights of the Qualified ExoMars Laser and Mechanical Considerations of Its Assembly Process
Instruments, 2019 1960 is the birth year of both the laser and the Mars exploration missions. Eleven years passed before the first successful landing on Mars, and another six before the first rover could explore the planet’s surface.
Pol Ribes-Pleguezuelo +5 more
doaj +1 more source
Capitalising the Network Externalities of New Land Supply in the Metaverse [PDF]
arXiv, 2023 When land becomes more connected, its value can change because of network externalities. This idea is intuitive and appealing to developers and policymakers, but documenting their importance is empirically challenging because it is difficult to isolate the determinants of land value in practice. We address this challenge with real estate in The Sandbox,
arxiv
Advanced Functional Materials, EarlyView.In this article, a water‐evaporation driven energy harvester is devised that works even in the absence of sunlight. This is achieved by combining PVA hydrogel with thermoelectrics (TEG) to directly capture energy from water evaporation. Under mild conditions (RH 40%, T of 26 °C, and 2.8 m s−1 wind), 1.71 mW (1.02 W m−2) power can be generated, >3 fold ...
Zichen Gong, Ady Suwardi, Jing Cao
wiley +1 more source
Discovering Effective Policies for Land-Use Planning with Neuroevolution [PDF]
arXiv, 2023 How areas of land are allocated for different uses, such as forests, urban areas, and agriculture, has a large effect on the terrestrial carbon balance, and therefore climate change. Based on available historical data on land-use changes and a simulation of the associated carbon emissions and removals, a surrogate model can be learned that makes it ...
arxiv
Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions
Advanced Functional Materials, EarlyView.DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng +7 more
wiley +1 more source
Earth and Space ScienceChina's Tianwen‐3 mission is expected to be launched around 2028, making it the first Mars sample return mission. Dust storms occurring in all seasons on Mars can affect the accuracy and safety of the landing and takeoff phases of Mars sampling missions.
Puzheng Wen +3 more
doaj +1 more source