Results 91 to 100 of about 811,277 (227)

Preferential trading in agriculture: New insights from a structural gravity analysis and machine learning

American Journal of Agricultural Economics, EarlyView.
Abstract Preferential trade agreements (PTAs) contain various non‐tariff provisions, yet identifying their trade effects remains challenging because these commitments are high‐dimensional and strongly correlated within agreements. We estimated a theory‐consistent structural gravity model with domestic flows for 26 agricultural subsectors over 1988–2017
Dongin Kim, Sandro Steinbach
wiley   +1 more source

Firm turnover under asymmetric information: Tanzania's agro‐dealer sector

American Journal of Agricultural Economics, EarlyView.
Abstract We study firm turnover (i.e., entry and exit) and its consumer implications in a market characterized by asymmetric information. Using a three‐round census of agro‐dealers in Tanzania's Morogoro Region, we document annual firm entry and exit rates of 33% and 17%, respectively.
Alix Naugler, Hope Michelson, Sarah Janzen, Christopher Magomba   +3 more
wiley   +1 more source

New generalized numerical radius inequalities for Hilbert space operators

Journal of Inequalities and Applications
We define generalized real and imaginary parts of an operator, as well as the generalized w h , g ( ⋅ ) $w_{h,g}(\cdot )$ numerical radius, which reduces to the t-weighted numerical radius for suitable functions h , g $h,g$ .
Fuad Kittaneh, Vuk Stojiljković
doaj   +1 more source

Border harm and affective injustice: The politics of anger at the Melilla border, Spain

American Journal of Community Psychology, EarlyView.
Abstract This article examines protests in a detention center in Melilla, Spain—a site where structural violence intersects with the everyday harms of confinement. Adopting a justice and dignity‐centered perspective, we analyze grassroots forms of resistance emerging at the border. The study focuses on the protests of Tunisian migrants and explores the
Corina Tulbure
wiley   +1 more source

Negotiating contested spaces and places: Narratives of social suffering and resistance in racialized Cape Town communities

American Journal of Community Psychology, EarlyView.
Abstract This study employs a schizocartographic approach to explore community narratives of space, memory, and violence in Kraaifontein, Cape Town. Through participants' accounts, ordinary places—gardens, shops, blocks, sports grounds, and streets—emerge as ambivalent geographies where trauma, resilience, and belonging intersect.
Guido Veronese, Chiara Fiscone, Ashraf Kagee   +2 more
wiley   +1 more source

Internet use and adolescent development: A conceptual model integrating behavioral and contextual theories

American Journal of Community Psychology, EarlyView.
Abstract In the digital era, adolescent development is deeply embedded in the cyber environment. Despite ongoing debate on the benefits and/or risks that Internet use brings to adolescents in empirical studies, conceptual and theoretical discussion on the influences of the intensity and modalities of Internet use is peripheral.
Linxiao Zhang, Lin Fang, Faye Mishna, Liangqi Shen   +3 more
wiley   +1 more source

Immigration detention centers as torturing environments: Ethical reckonings, radical refusals, and implications for a psychology of resistance

American Journal of Community Psychology, EarlyView.
Abstract This paper examines psychologists' ethical dilemmas in immigration detention centers. Using critical psychology, border, and detention scholarship, it highlights psychologists' historical complicity in state violence, from the U.S. Enhanced Interrogation Program to current border regimes.
Francesca Esposito, Federica de Cordova, Julia Manek, Sara Buckingham, Camilla Ponti, Francesco Tommasi, Bradley Olson   +6 more
wiley   +1 more source

Upper Bounds for the Euclidean Operator Radius and Applications [PDF]

, 2006
The main aim of the present paper is to establish various sharp upper bounds for the Euclidean operator radius of an n−tuple of bounded linear operators on a Hilbert space.
Dragomir, Sever S
core   +1 more source

Occupational Conditions and Well‐Being Among Informal Waste Pickers in Hong Kong: A Comparative Study of 2018 and 2023

American Journal of Industrial Medicine, EarlyView.
ABSTRACT Background Informal waste pickers play a crucial role in urban recycling systems but often face precarious employment and systematic marginalization. This study examines the evolving demographic, occupational, and health trends of informal waste pickers in Hong Kong between 2018 and 2023.
Siu‐Ming Chan, Alan Tam, Heng Xu, Yu‐tian He, Yuen‐Ki Tang, Gum‐Ryeong Park, Wing‐Him Tang   +6 more
wiley   +1 more source

Kato’s Type Inequalities in Terms of Moore–Penrose Inverse and Applications for Norm and Numerical Radius of Hilbert Space Operators

Axioms
This paper develops Kato-type inequalities for bounded operators on Hilbert spaces by using the Moore–Penrose inverse of closed range operators. The results extend classical forms of Kato’s inequality to products involving a closed range operator and ...
Najla Altwaijry, Silvestru Sever Dragomir   +1 more
doaj   +1 more source