搜索结果: 1-15 共查到“理学 competition”相关记录62条 . 查询时间(0.138 秒)
Researchers show how extreme drought and plant invasion impact ecosystems in the Mediterranean region.
Single day of competition in the wild is encoded in the brain（图）
Single day competition wild encoded brain
2021/4/16
Fighting among social animals is common as they compete for the resources they need to survive and reproduce. A winner and a loser will inevitably result from these interactions, but do these challeng...
Genetic redundancy aids competition among symbiotic bacteria in squid（图）
Genetic redundancy aids competition symbiotic bacteria squid
2019/10/21
The molecular mechanism used by many bacteria to kill neighboring cells has redundancy built into its genetic makeup, which could allow for the mechanism to be expressed in different environments, say...
Competition and disclosure incentives: an empirical study of HMOs
HMOs disclosure incentives
2015/9/21
I examine Health Maintenance Organizations’ (HMOs) voluntary disclosure of product quality, which is
not as complete as unraveling theories predict. After controlling for cost and demand factors, I &...
Parasitic Disease:Contact Rates,Competition Matter in Transmission
Parasitic Disease Contact Rates Competition Matter Transmission
2015/9/18
Contact and competition among different animals within a community matters when it comes to the possibility of parasitic disease outbreak, according to new research from the National Institute for Mat...
Competition and Ideological Diversity: Historical Evidence from US Newspapers
US Newspapers Competition and Ideological Diversity
2015/7/17
We study the competitive forces which shaped ideological diversity in
the US press in the early twentieth century. We find that households
preferred like-minded news and that newspapers used their...
Information Environments and the Impact of Competition on Information Provision
Information Provision Information Environments
2015/7/17
We study symmetric information games where a number of senders choose what information to communicate. We show that the impact of competition on information revelation is ambiguous in general.
We the...
We study the impact of competition on information revelation in a class of Bayesian Persuasion
games with multiple senders. Senders with no private information choose what information
to gather and ...
Coexisting in a Sea of Competition Similar Diatom Species Seek Out Nutrients in Different Ways
Diatom Species Seek Out Nutrients Different Ways
2015/4/29
Diversity of life abounds on Earth, and there's no need to look any farther than the ocean's surface for proof. There are over 200,000 species of phytoplankton alone, and all of those species of micro...
The Nexus Land-Use model version 1.0, an approach articulating biophysical potentials and economic dynamics to model competition for land-use
Demand for food. Biomass energy Forest protection Land use Model equation biophysics
2014/12/10
Interactions between food demand, biomass energy and forest preservation are driving both food prices and land-use changes, regionally and globally. This study presents a new model called Nexus Land-U...
Competition for ecological niches limits the formation of new species
Competition ecological niches limits formation of new species
2014/5/13
The rate at which new species evolve is limited by competition for ecological niches, report scientists from the University of Chicago in Nature on April 30. The study, which analyzes the evolutionary...
Video by UC-Riverside lab receives honorable mention in international competition（图）
solar power Visualizing Leaf Cells from Within
2014/3/18
RIVERSIDE, Calif. — A video produced by the lab of Zhenbiao Yang, a professor of cell biology at the University of California, Riverside, has received an honorable mention in a challenge — the highly ...
Competition ability of selected amenity varieties of Festuca rubra in mixture with Deschampsia caespitosa
competition cultivars lawn density red fescue tufted hairgrass turfgrass
2014/2/24
The aim of the research was to evaluate the competition capacity and find suitable proportion of different types of Festuca rubra and Deschampsia caespitosa in grass mixtures for decorative lawns. A f...
Competition between electronic Kerr and free carrier effects in an ultimate-fast optically switched semiconductor microcavity
electronic Kerr free carrier effects semiconductor microcavity Optics
2012/5/17
We have performed ultrafast pump-probe experiments on a GaAs-AlAs microcavity with a resonance near 1300 nm in the "original" telecom band. We concentrate on ultimate-fast optical switching of the cav...
Symmetric competition as a general model for single-species adaptive dynamics
Symmetric competition general model single-species adaptive dynamics Populations and Evolution
2012/4/28
Adaptive dynamics is a widely used framework for modeling long-term evolution of continuous phenotypes. It is based on invasion fitness functions, which determine selection gradients and the canonical...