Results 121 to 130 of about 56,380 (334)

A novel gravitational lensing feature by wormholes

Physics Letters B, 2019
Horizonless compact objects with light rings (or photon spheres) are becoming increasingly popular in recent years for several reasons. In this paper, we show that a horizonless object such as a wormhole of Morris–Thorne type can have two photon spheres.
Rajibul Shaikh, Pritam Banerjee, Suvankar Paul, Tapobrata Sarkar   +3 more
doaj   +1 more source

The Biased Interaction Game: A System Theoretic Approach to the Emergence of Inequality, Hierarchy, and the Implications for the Likelihood of Cooperation

Systems Research and Behavioral Science, EarlyView.
ABSTRACT The emergence of cooperation in natural selection has been successfully studied using game theory and, despite the underlying selfish nature of the evolutionary process, a spectrum of plausible mechanisms have been proposed to determine the conditions under which cooperative behaviour is likely to occur.
Phil Mercy, Martin Neil
wiley   +1 more source

A Methodological Framework to Study Change in Team Cognition Under the Dynamical Hypothesis

Topics in Cognitive Science, EarlyView., 2023
Abstract The dynamical hypothesis claims that cognitive systems, such as teams, are dynamical systems (i.e., an interdependent collection of individuals and their technology that change together over time). Following this hypothesis, team researchers have adopted dynamical approaches to better understand the team cognitive processes and states that ...
Kyana van Eijndhoven, Travis J. Wiltshire, Elwira A. Hałgas, Josette M. P. Gevers   +3 more
wiley   +1 more source

Using Convolutional Neural Networks to Search for Strongly Lensed Quasars in KiDS DR5

The Astrophysical Journal
Gravitationally strongly lensed quasars (SL-QSO) offer invaluable insights into cosmological and astrophysical phenomena. With the data from ongoing and next-generation surveys, thousands of SL-QSO systems can be discovered expectedly, leading to ...
Zizhao He, Rui Li, Yiping Shu, Crescenzo Tortora, Xinzhong Er, Raoul Cañameras, Stefan Schuldt, Nicola R. Napolitano, Bharath Chowdhary N, Qihang Chen, Nan Li, Haicheng Feng, Limeng Deng, Guoliang Li, L. V. E. Koopmans, Andrej Dvornik   +15 more
doaj   +1 more source

Experimental Investigations on the Impact of Operational Conditions on Bubble Dynamics and the Resulting Vibrations in Gas‐Stirred Ladles

steel research international, EarlyView.
This study applies sensitive vibration sensors to investigate gas bubble behavior in liquid metal during argon injection. Analysis of vibration signals provides insights into bubble evolution and the influence of gas flow and surface pressure. The results provide a basis for improved vibration‐based two‐phase flow models, enhancing accuracy in ...
Konstantinos Rigas, Bernd Willers, Sven Eckert, Björn Glaser   +3 more
wiley   +1 more source

The necessity of dark matter in MOND within galactic scales

, 2007
To further test MOdified Newtonian Dynamics (MOND) on galactic scales -- originally proposed to explain the rotation curves of disk galaxies without dark matter -- we study a sample of six strong gravitational lensing early-type galaxies from the CASTLES
H. Zhao, Ignacio Ferreras, Mairi Sakellariadou, Muhammad Furqaan Yusaf, R. H. Sanders   +4 more
core   +1 more source

The Export and Financial Effects of Immigrant Team Composition in International New Ventures

Thunderbird International Business Review, EarlyView.
ABSTRACT Immigrant‐owned international new ventures (INVs) often partner with non‐immigrant entrepreneurs as co‐owners. Their mixed immigrant‐nonimmigrant teams could engender varied perspectives. But it is unclear whether such cognitive diversity improves their international strategy and performance.
Horatio M. Morgan, Sui Sui
wiley   +1 more source

Quasar Milli-lensing and Cold Dark Matter (TNG50) Subhaloes. I. Image Splitting

The Astrophysical Journal
We use numerical mass density profiles from the TNG50 simulation to study the impact of gravitational milli-lensing by dark matter subhaloes on the images of lensed quasars.
E. Mediavilla, J. Jiménez-Vicente, F. M. Heinze, J. Martín Camalich   +3 more
doaj   +1 more source

State of the Field: The History of Masculinities

History, EarlyView.
Abstract This State of the Field article discusses how, when and why the history of masculinities has emerged since the 1980s, and why it continues to be an important research field today. The article begins with the field's multiple origin stories and then discusses its expansion in chronology, geography and theme, as well as newer directions for ...
ERICA L. FRASER
wiley   +1 more source

The necessity of dark matter in MOND within galactic scales [PDF]

, 2008
To further test MOdified Newtonian Dynamics (MOND) on galactic scales -- originally proposed to explain the rotation curves of disk galaxies without dark matter -- we study a sample of six strong gravitational lensing early-type galaxies from the CASTLES
Ferreras, I, Sakellariadou, M, Yusaf, MF
core