Results 1 to 10 of about 81,520 (219)

Growth without Scale Effects [PDF]

open access: yesJournal of Political Economy, 1998
An increase in the size (scale) of an economy increases the total quantity of rents that can be captured by successful innovators which, in equilibrium, should lead to a rise in innovative activity. Conventional wisdom and the theoretical predictions of models of endogenous innovation suggest that this increased research effort should lead to more ...
openaire   +1 more source

Land use mediates riverine nitrogen export under the dominant influence of human activities

open access: yesEnvironmental Research Letters, 2017
Riverine nitrogen (N) export is a crucial process that links upstream and downstream ecosystems and coastal zones. However, the driving forces of riverine N export that is closely related to water N pollution are still not well understood. In this study,
Binhui Chen   +4 more
doaj   +1 more source

Tensioned flexible riser vibrations under wave excitation, an investigation on the scale effect

open access: yesFrontiers in Marine Science
In order to study the scale effect in wave-structure interactions and the role that structure-related parameters (tension T or bending stiffness EI) plays, riser model tests under regular waves were conducted using the model with multiple geometric ...
Yunli Feng   +3 more
doaj   +1 more source

Effects of small‐scale dynamo and compressibility on the Λ effect [PDF]

open access: yesAstronomische Nachrichten, 2019
AbstractThe Λ effect describes a rotation‐induced nondiffusive contribution to the Reynolds stress. It is commonly held responsible for maintaining the observed differential rotation of the Sun and other late‐type stars. Here, the sensitivity of the Λ effect to small‐scale magnetic fields and compressibility is studied by means of forced turbulence ...
openaire   +4 more sources

Numerical simulation of size effect on shear strength and deformation behavior of rockfill materials

open access: yesYantu gongcheng xuebao, 2018
The scale effect of rockfill materials is crucial to predicting the strength and deformation of earth-rockfill dams. Due to their large particle size and the experimental restrictions, large triaxial tests on full scale samples are seldom conducted.
SHAO Xiao-quan 1,2, CHI Shi-chun 1,2, TAO Yong 3
doaj   +1 more source

Discussion on some problems observed in high earth-rockfill dams

open access: yesYantu gongcheng xuebao, 2018
A few key issues influencing the safety of high earth-rockfill dams are discussed, and the research progress in recent years is reviewed. The factors which influence the scale effects of coarse-grained materials are analyzed.
WANG Xiao-gang
doaj   +1 more source

Scale-Dependent Relationships Between Urban Morphology and Noise Perception: A Multi-Scale Spatiotemporal Analysis in New York City

open access: yesLand
Urban morphology significantly influences residents’ noise perceptions, yet the impact across different spatial and temporal scales remains unclear. This study investigates the scale-dependent relationship between urban morphology and noise perception in
Siting Chen   +5 more
doaj   +1 more source

Scale effects of the spatiotemporal relationship between nighttime light and population activity intensity: a case study in Shanghai, China

open access: yesGIScience & Remote Sensing
Understanding the spatial distribution and temporal dynamics of population activities is critical for advancing interdisciplinary research in economic development, climate change, environmental management, and urban sustainability.
Xiangzhong Guo   +10 more
doaj   +1 more source

Investigation of Scale Effects on Linear Vertical Maneuvering Derivatives of a Submarine

open access: yesJournal of Eta Maritime Science
This paper aims to show the scale effects of vertical maneuvering derivatives for an underwater vehicle using computational fluid dynamics (CFD). The model scale and full-scale benchmark DARPA suboff hull forms were used in numerical vertical planar ...
Emre Kahramanoğlu   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy