Results 21 to 30 of about 529,224 (335)
The complete LQG propagator: I. Difficulties with the Barrett-Crane vertex [PDF]
, 2007 Some components of the graviton two-point function have been recently computed in the context of loop quantum gravity, using the spinfoam Barrett-Crane vertex. We complete the calculation of the remaining components.
A. Ashtekar +7 more
core +2 more sources
On relativistic spin network vertices [PDF]
, 1998 Barrett and Crane have proposed a model of simplicial Euclidean quantum gravity in which a central role is played by a class of Spin(4) spin networks called "relativistic spin networks" which satisfy a series of physically motivated constraints.
Reisenberger, Michael P.
core +3 more sources
International Journal for Parasitology: Parasites and Wildlife, 2021 Bison (Bison spp) are being reintroduced into semi-wild, spatially constrained herds across North America and Europe. Herd managers are concerned about gastrointestinal (GI) nematode parasites as they care for the health of their bison.
Joshua D. Wiese +5 more
doaj +1 more source
Tower Crane Location Optimization for Heavy Unit Lifting in High-Rise Modular Construction
, 2021 Modular construction, which involves unit production in factories and on-site work, has benefits such as low cost, high quality, and short duration, resulting from the controlled factory environment utilized. An efficient tower crane lifting plan ensures
Hosang Hyun +3 more
semanticscholar +1 more source
Remote Sensing, 2021 The Poyang Lake wetland in China is the largest wintering destination for Siberian cranes worldwide. Understanding the spatiotemporal characteristics of crane habitats is of great importance for ecological environment governance and biodiversity ...
Lin Zou +4 more
semanticscholar +1 more source
Mathematics, 2021 The joint scheduling of quay cranes (QCs), yard cranes (YCs), and yard trucks (YTs) is critical to achieving good overall performance for a container terminal. However, there are only a few such integrated studies.
H. Hsu +3 more
semanticscholar +1 more source
Two-Stage Revision ACL Reconstruction with Arthroscopic Tunnel Bone Grafting
Video Journal of Sports Medicine, 2023 Background: Anterior cruciate ligament (ACL) reconstruction is a common orthopedic surgery, and due to the increased number of primary reconstructions being performed, the number of revision ACL reconstructions is also increasing.
Ryan H. Barnes MD +3 more
doaj +1 more source
Structural Improvement in Crane Boom Rest
International Journal of Innovative Science and Research TechnologyCrane boom rests are critical components that endure both static and dynamic loads, leading to deformation and a shortened lifespan. This paper addresses these issues by proposing a redesigned model with enhanced stiffness and load-bearing capacity.
CA Thulasi Dharan +4 more
semanticscholar +1 more source
Becoming a Nun, Becoming a Man: Taiwanese Buddhist Nuns’ Gender Transformation [PDF]
, 2007 This paper explores apparent contradictions in the gender identifications of Taiwanese Buddhist nuns. Because the texts and teachings of their tradition provide conflicting messages about women\u27s spiritual abilities, the nuns create a complex gender ...
Crane, Hillary
core +2 more sources
Spin foam model from canonical quantization
, 2007 We suggest a modification of the Barrett-Crane spin foam model of 4-dimensional Lorentzian general relativity motivated by the canonical quantization. The starting point is Lorentz covariant loop quantum gravity. Its kinematical Hilbert space is found as
C. Rovelli +6 more
core +3 more sources