Results 131 to 140 of about 72,164 (263)
Structural Concrete, EarlyView.Abstract The decisive reinforcement of thick concrete members is often determined by the minimum reinforcement for crack control due to restraint stresses. In contrast to the heuristic design model in Eurocode 2, a mechanically sound methodology is only provided if the deformation compatibility is considered.
Christina Krenn, Dirk Schlicke
wiley +1 more source
ON REDUCED ALMOST GEODESIC MAPPINGS IN RIEMANNIAN SPACES
Demonstratio Mathematica, 1982 A Riemannian space \(V_ n\) is said to admit an almost geodesic mapping of type \(\pi_ 2\) onto \(\bar V_ n\) (N. S. Sinyukov), if there exist tensor fields \(\phi_ i,\psi_ i,\sigma_ i,\nu_ i\) and \(U^ k_ i\) satisfying the conditions: \({\bar\Gamma }{}^ h_{ij}=\Gamma^ k_{ij}+\phi_{(i}\delta^ k_{j)}+\psi_{(i}U^ k_{j)}\), \(U^ k_{(i,j)}+\psi_{(i}U^ n_ ...
openaire +4 more sources
A new smooth failure criterion for concrete inspired by Lubliner's condition
Structural Concrete, EarlyView.Abstract A new failure criterion with 10 parameters is proposed, based on Lubliner's idea of joining two Drucker–Prager cones. The novelty lies in the way of introducing deviatoric shape variation: through two Podgórski's functions. This feature allows for improving plane stress cross‐section's compatibility with experimental data.
Inez Kamińska, Aleksander Szwed
wiley +1 more source
Pseudo-Anosov Maps and Pairs of Filling Simple Closed Geodesics on Riemann Surfaces [PDF]
, 2012 Chaohui Zhang
openalex +1 more source
Wildlife Biology, EarlyView.Predation by pine martens Martes martes and red foxes Vulpes vulpes is an important factor influencing the population dynamics of capercaillie Tetrao urogallus. However, there is a knowledge gap regarding the relative effects of these mesopredators on the reproductive success of capercaillie. To better understand how various landscape factors influence
Siow Yan Jennifer Angoh +4 more
wiley +1 more source
Predicting the breeding distribution of wader species across climatic and environmental gradients
Wildlife Biology, EarlyView.Developing and applying species distribution models is particularly urgent for species currently facing high levels of environmental change. Waders (Charadrii) are among the most species‐rich groups of birds breeding at higher latitudes and the one where species are declining fastest. Iceland holds a large part of the global population of several wader
Verónica Méndez +15 more
wiley +1 more source
Missouri Botanical Garden's cycad collection: A journey through time
Plant Species Biology, EarlyView.This article summarizes the history of the Missouri Botanical Garden's extensive cycad collection. Some of the specimens currently housed in the living collections date back well over 100 years. Cycads continue to face a myriad of threats in the wild, and their conservation in ex situ collections is of critical importance to assist in their survival ...
Benjamin E. Deloso +3 more
wiley +1 more source
Journal of Accounting Research, EarlyView.ABSTRACT In this paper, we develop novel measures of managerial labor market classification and competition by constructing networks of compensation benchmarking peers disclosed in proxy statements. These networks represent firms’ relative positions within the managerial labor market.
RAY RUI GAO, YIFEI LU
wiley +1 more source
Endogenous Technology Spillovers in R&D Collaboration Networks
The RAND Journal of Economics, EarlyView.ABSTRACT We introduce an R&D network formation model where firms choose both R&D efforts and collaboration partners. Neighbors in the network benefit from each other's R&D through technology spillovers, and there exists competition effects reflecting strategic substitutability in R&D.
Chih‐Sheng Hsieh +2 more
wiley +1 more source
Methods in Ecology and Evolution, EarlyView.Abstract Distributional data are essential for understanding species and community responses to environmental and anthropogenic change. Large biodiversity databases provide key information on distributional patterns, but their temporal coverage can be limited. Facilitating access to untapped occurrence data is a pressing need. We present the Historical
Harri Ravenscroft +3 more
wiley +1 more source