Results 101 to 110 of about 3,367,182 (237)

Property Rights Entrepreneurship: The Drive for Product, Asset, and Resource Excludability

Managerial and Decision Economics, EarlyView.
ABSTRACT Property rights are foundational to market economies, and entrepreneurial activity depends heavily on the excludability afforded by property rights. Yet, the role of entrepreneurs in shaping the evolution of property rights has been so thoroughly taken for granted that it often vanishes from analyses.
Thomas J. Dean, William R. Forster, Nicholas Dew   +2 more
wiley   +1 more source

The multi-wavelength vertical structure of the archetypal β Pictoris debris disk

Astronomy & Astrophysics
Context. Thermal imaging of debris disks is resolving the vertical height in an increasing number of systems, enabling the use of the vertical structure to decode the dynamical state of the planetary system. Aims.
Han Yinuo, Wyatt Mark C., Jankovic Marija R., Zhang Andrew, Dent William R. F., Hughes A. Meredith, Matrà Luca   +6 more
doaj   +1 more source

Analysis of Mechanical‐Electrical‐Hydraulic Coupled Vibration Response Characteristics of Thermal Control Circulating Pumps Supported by Water‐Lubricated Bearings

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The operational reliability of thermal control circulation pumps is significantly restricted by the multi‐physics coupled environment. To reveal the vibration transmission mechanisms and dynamic response characteristics under multi‐field coupled excitations, a multi‐DOF coupled dynamic representation of the overall system, incorporating the ...
Jianfeng Luo, Liukai Hou, Yutao Zou, Kaiyuan Hao, Guangwu Zhou   +4 more
wiley   +1 more source

Computational Analysis of the Vibrational Response of Lunar Regolith Made of Nonspherical Grains

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Vibration‐based systems have shown that appropriately oriented and tuned mechanical oscillations can disrupt regolith interlocking and promote flow. Building on this evidence, the present study investigates vibration‐controlled granular discharge as a potential ISRU (In Situ Resource Utilization) strategy, with the aim of supporting ...
Lewis Traquair, Peter Watson, Ali Anwar, Sebastien Vincent Bonnieu, Marcello Lappa   +4 more
wiley   +1 more source

Gaps and rings: a near-universal trait of extended protoplanetary discs

Astronomy & Astrophysics
Context. Substructures such as rings, gaps, and cavities are commonly observed in protoplanetary discs and are thought to play a key role in dust evolution and planet formation.
Bosschaart Q., Guerra-Alvarado O. M., van der Marel N., Mulders G. D.   +3 more
doaj   +1 more source

An Open Database of Lunar Regolith and Simulants Properties

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Lunar regolith, the layer of unconsolidated material covering the Moon's surface, is central to the science and technology developed for the Moon, notably related to in‐situ science investigations, resource utilization, surface infrastructure, and mobility systems.
Léonie Gasteiner, Naomi Murdoch, Olfa D'Angelo   +2 more
wiley   +1 more source

exoALMA. XVII. Characterizing the Gas Dynamics around Dust Asymmetries

The Astrophysical Journal Letters
The key planet-formation processes in protoplanetary disks remain an active matter of research. One promising mechanism to radially and azimuthally trap millimeter-emitting dust grains, enabling them to concentrate and grow into planetesimals, is ...
Lisa Wölfer, Marcelo Barraza-Alfaro, Richard Teague, Pietro Curone, Myriam Benisty, Misato Fukagawa, Jaehan Bae, Gianni Cataldi, Ian Czekala, Stefano Facchini, Daniele Fasano, Mario Flock, Maria Galloway-Sprietsma, Himanshi Garg, Cassandra Hall, Jane Huang, John D. Ilee, Andrés F. Izquierdo, Kazuhiro Kanagawa, Geoffroy Lesur, Cristiano Longarini, Ryan A. Loomis, Francois Menard, Anika Nath, Ryuta Orihara, Christophe Pinte, Daniel J. Price, Giovanni Rosotti, Jochen Stadler, Gaylor Wafflard-Fernandez, Andrew J. Winter, Hsi-Wei Yen, Tomohiro C. Yoshida, Brianna Zawadzki   +33 more
doaj   +1 more source

Prey detection by the predator remains constant across prey densities: evidence from a field experiment in the Arctic tundra

Oikos, EarlyView.
The functional response describes how predator acquisition rates change with prey availability and integrates behavioural processes that occur during predator–prey encounters. Among these processes, prey detection represents a critical yet often overlooked component that can directly influence population dynamics. Variation in detection probability has
Matthieu Weiss‐ Blais, Andréanne Beardsell, Pierre Legagneux, Joël Bêty   +3 more
wiley   +1 more source

A multi-fluid approach for polydisperse pebble accretion

Astronomy & Astrophysics
Context. Pebble accretion offers an efficient pathway to form planets, driven by a constant supply of inward drifting mass and an accretion efficiency enhanced by gas drag. While most studies assume a single pebble size (monodisperse), real discs contain
Konijn T. J., Paardekooper S.-J.
doaj   +1 more source

The place bonding potential of nature‐based citizen science with refugee children and youth

People and Nature, EarlyView.
Abstract Nature‐based citizen science often involves close interaction with places. In addition to providing benefits, such as learning opportunities and contact with nature, it can facilitate and shape bonds between people and places. Research exploring the place bonding potential of such projects is still in its infancy. This paper addresses this gap
Ekaterina Egorova
wiley   +1 more source