Results 71 to 80 of about 1,235,817 (343)

Work Versus Force: Simultaneous Processes for Describing Interactions

Advanced Physics Research, EarlyView.
ABSTRACT Achieving a unified description of interactions remains an open challenge in theoretical physics, which currently describes four fundamental forces. This situation may be viewed differently when interactions are formulated in terms of processes (work as actio) rather than forces (force as actio), not only at the macroscopic level but also at ...
Grit Kalies, Duong D. Do, Cornelia Breitkopf   +2 more
wiley   +1 more source

A U-Net network-based downward continuation method for airborne gravity

Geo-spatial Information Science
Downward continuation of gravity data is a critical challenge in the practical applications of airborne gravity, such as global geopotential modeling and geophysical interpretation.
Zifan Ding, Jiancheng Li, Xinyu Xu, Hui Wei   +3 more
doaj   +1 more source

The Coupling of Chern-Simons Theory to Topological Gravity

, 2009
We couple Chern-Simons gauge theory to 3-dimensional topological gravity with the aim of investigating its quantum topological invariance. We derive the relevant BRST rules and Batalin-Vilkovisky action.
Alexandrov, Axelrod, Bar-Natan, Baulieu, Baulieu, Baulieu, Becchi, Bershadsky, Birmingham, Brandhuber, Camillo Imbimbo, Delduc, Delduc, Deser, Deser, Deser, Dubois-Violette, Fuster, Gaiotto, Gopakumar, Jackiw, Kanno, Kluberg-Stern, Kluberg-Stern, Kluberg-Stern, Kontsevich, Lucchesi, Myers, Myers, Ouvry, Piguet, Piguet, Schonfeld, Schwarz, Witten, Witten, Witten   +36 more
core   +1 more source

Anomalous particle-production thresholds through systematic and non-systematic quantum-gravity effects [PDF]

, 2002
A growing number of studies is being devoted to the identification of plausible quantum properties of spacetime which might give rise to observably large effects. The literature on this subject is now relatively large, including studies in string theory,
Amelino-Camelia, Giovanni, NG, Y. Jack, Van Dam, Hendrik   +2 more
core   +4 more sources

The tiger salamander as a promising alternative model organism to the axolotl for fracture healing and regenerative biology research

The Anatomical Record, EarlyView.
Abstract Scientists have been captivated by the ability to regenerate, focusing on uncovering the mechanisms of epimorphic regeneration and applying them to human medicine. The axolotl (Ambystoma mexicanum) has become the most intensively studied model in tetrapod regeneration research, particularly concerning limb regeneration.
Vivien Bothe, Nadia Fröbisch
wiley   +1 more source

Pelvic morphology and body size in relation to the preauricular sulcus: Evidence from medieval to modern Iberia

The Anatomical Record, EarlyView.
Abstract The preauricular sulcus has long been debated as a pelvic feature variably attributed to obstetric stress, ligamentous traction, and broader biomechanical processes. To clarify its determinants, we analyzed 409 adult individuals from three archeological and one early modern skeletal collection from the Iberian Peninsula, integrating graded ...
Rebeca García‐González, Julia Muñoz‐Guarinos, Nico Cirotto, Sonia Díaz‐Navarro, Laura Rodríguez, José Miguel Carretero   +5 more
wiley   +1 more source

Higher-loop anomalies in chiral gravities [PDF]

, 1995
The one-loop anomalies for chiral $W_{3}$ gravity are derived using the Fujikawa regularisation method. The expected two-loop anomalies are then obtained by imposing the Wess-Zumino consistency conditions on the one-loop results.
Bardeen, Bergshoeff, Ceresole, Diaz, Fujikawa, Fujikawa, Fujikawa, Hull, Kallosh, L. Wenham, Lam, Mohayaee, Mohayaee, Pope, R. Mohayaee, Romans, Schoutens, Stelle, Sterman, Thielemans, Thierry-Mieg, Vandoren, Wess   +22 more
core   +3 more sources

“Hidden” Landscape of Prehistoric Burial Monuments: The Use of Remote Sensing in the Detection of Neolithic Long Barrows in Bohemia (Czech Republic)

Archaeological Prospection, EarlyView.
ABSTRACT Neolithic long barrows are among the earliest monumental structures in Europe, yet in many parts of Central Europe their surface expression has been largely erased by long‐term agricultural activity. This study evaluates the potential of integrated remote sensing approaches for identifying and contextualizing long barrows and associated ...
Petr Krištuf, Tomáš Kroupa, Peter Milo, Jan Havelka, Jan Turek, Martin Gojda   +5 more
wiley   +1 more source

An Analysis of Mechanical Constraints when Using Superconducting Gravimeters for Far-Field Pre-Seismic Anomaly Detection

Terrestrial, Atmospheric and Oceanic Sciences, 2011
Pre-seismic gravity anomalies from records obtained at a 1 Hz sampling rate from superconducting gravimeters (SG) around East Asia are analyzed. A comparison of gravity anomalies to the source parameters of associated earthquakes shows that the detection
Shyh-Chin Lan, Teng-To Yu, Cheinway Hwang, Ricky Kao   +3 more
doaj   +1 more source

Determination of mean gravity anomalies in the Taiwan Island [PDF]

The fitting and proper regression coefficients were made of one hundred seventeen 10 x 10' blocks with observed gravity data and corresponding elevation in the Taiwan Island.
Chang, Ruey-Gang
core   +1 more source