Results 101 to 110 of about 449,256 (294)

Spinning strings, cosmic dislocations and chronology protection

, 2003
A massless scalar field is quantized in the background of a spinning string with cosmic dislocation. By increasing the spin density toward the dislocation parameter, a region containing closed timelike curves (CTCs) eventually forms around the defect ...
D.V. Gal’tsov, E. S. Moreira, G.E.A. Matsas, K.P. Tod, P.O. Mazur, P.S. Gerbert, P.S. Letelier, S. Deser, S.W. Hawking, V. A. De Lorenci, V.A. De Lorenci, V.A. De Lorenci, W.A. Hiscock   +12 more
core   +1 more source

A High‐Precision Dynamic Movement Recognition Algorithm Using Multimodal Biological Signals for Human–Machine Interaction

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This article describes a multimodal fusion data acquisition and processing system about electromyography for dynamic movement recognition and bioelectrical impedance for key posture recognition. In addition, a new dynamic–static fusion algorithm strategy is designed.
Chenhao Cao, Gang Ma, Zelin Chen, Yiming Ouyang, Hu Jin, Shiwu Zhang   +5 more
wiley   +1 more source

Retinal Vessel Segmentation: A Comprehensive Review From Classical Methods to Deep Learning Advances (1982–2025)

Advanced Intelligent Systems, EarlyView.
Four decades of retinal vessel segmentation research (1982–2025) are synthesized, spanning classical image processing, machine learning, and deep learning paradigms. A meta‐analysis of 428 studies establishes a unified taxonomy and highlights performance trends, generalization capabilities, and clinical relevance.
Avinash Bansal, Jan Kubíček, Jana Bahrová, Alice Varyšová, Martin Augustýnek, Marek Penhaker, Juraj Timkovič   +6 more
wiley   +1 more source

Early Iron Age and Medieval Sites in the Southern Ural Region: Context of Sources (Forest and Forest-Steppe)

Поволжская археология, 2017
The author examines the geography of settlements of the early Iron Age finale (Glyadenovo culture) - early medieval period (second half of the I Millennium BC: Mazuninо/Bahmutino, Lomovatovo, Nevolino, Polom/Cheptza, Kushnarenkovo/Karayakupovo cultures ...
Ivanov Vladimir A.
doaj   +1 more source

Innovative Artificial Intelligence‐Assisted Systems for Social Science Research: Architecture Design and Applied Practice

AI &Innovation, EarlyView.
ABSTRACT The rapid advancement of large language model (LLM) technology is profoundly transforming the practice of social science research. Scholarly discussions on Artificial Intelligence (AI)'s role in social science research can be organised into three levels: AI as a research tool, AI as a methodological infrastructure and AI as a quasi‐cognitive ...
Jie Xiong
wiley   +1 more source

Minimal ATP‐Independent N2‐Reducing Systems Defined by L‐Cluster‐Bound Nitrogenase Assembly Platforms

Angewandte Chemie, EarlyView.
Association of the L‐cluster with the nitrogenase assembly proteins NifEN (NifENL) or NifB (NifBL) intrinsically endows these proteins with N2‐reducing activity, enabling in vitro N2‐reduction by NifENL and NifBL when supplied with chemical reductants or photoexcited quantum dots while supporting in vivo N2‐fixation in NifENL‐ and NifENL‐expressing ...
Robert Quechol, Yimo Yang, Chi Chung Lee, Markus W. Ribbe, Yilin Hu   +4 more
wiley   +2 more sources

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

Les plus anciennes gravures rupestres du Sahara central ?

Afrique Archéologie Arts, 2003
In the 1960s F. Mori discovered in the Tadrart Acacus (south-western Libya) a small number of rock engravings which could not be assigned to any other type of rock engravings, and which he described as “ichthyomorphs”.
Karl Heinz Striedter, Michel Tauveron
doaj   +1 more source

Phenotype Expansion of Malan Syndrome: New Cases and a Review of the Literature

American Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Malan syndrome is an ultra‐rare overgrowth syndrome caused by pathogenic variants or deletions in nuclear factor one X (NFIX) located at 19p13.2. Here, we report a comprehensive literature review and phenotyping of known patients with Malan syndrome and present a novel cohort of eight patients.
Alex F. Nisbet, Sylvie A. Adams, Zoe S. Katz, Christal G. Delagrammatikas, Kosuke Izumi, Winifred Sigal, Kim Ventarola, Elaine H. Zackai, Julia E. Reid, Grant T. Liu, Jennifer M. Kalish   +10 more
wiley   +1 more source

Augustine of Hippo's philosophy of time meets general relativity

, 2014
A cosmological model is proposed which uses a causality argument to solve the homogeneity and entropy problems of cosmology. In this model a chronology violating region of spacetime causally precedes the remainder of the Universe, and a theorem ...
Minguzzi, E.
core   +1 more source