搜索结果: 91-105 共查到“理学 Diversity”相关记录220条 . 查询时间(0.166 秒)
Mitochondrial sequence variation suggests extensive cryptic diversity within the Western Palearctic Daphnia longispina complex
Mitochondrial sequence variation extensive cryptic diversity the Western Palearctic Daphnia longispina complex
2014/4/4
We report on a discovery of six divergent lineages within the European Daphnia longispina complex from various localities in central to northeast Europe. The levels of divergence from well-known speci...
Dispersal, eddies, and the diversity of marine phytoplankton
plankton biodiversity hotspots
2014/4/1
We examined the role of physical dispersal in regulating patterns of diversity of marine phytoplankton in
the context of global ocean simulations at eddy-permitting and coarse resolutions. Swifter cu...
Madagascar's unique animal diversity due to immigration across oceans
animal diversity oceans
2014/7/17
A study by University of Queensland and international researchers has found that most of Madagascar’s unique present-day fauna may originally have arrived across long distances by air or sea.
Distribution of branch lengths and phylogenetic diversity under homogeneous speciation models
phylogenetic tree birth–death process Yule model branch length
2011/9/23
Abstract: The constant rate birth--death process is a popular null model for speciation and extinction. If one removes extinct and non-sampled lineages, this process induces `reconstructed trees' whic...
On the Role of Diversity in Sparsity Estimation
Role of Diversity Sparsity Estimation Information Theory
2011/9/22
Abstract: A major challenge in sparsity pattern estimation is that small modes are difficult to detect in the presence of noise. This problem is alleviated if one can observe samples from multiple rea...
It has recently been argued by Copeland et al. that in eleven dimensions two orbifold planes can collide and bounce in a regular way, even when the bulk metric is perturbed away from Milne spacetime t...
56Ni, Explosive Nucleosynthesis, and SNe Ia Diversity
Explosive Nucleosynthesis SNe Ia Diversity
2011/9/29
The origin of the iron-group elements titanium to zinc in nature is understood to occur under explosive burning conditions in both Type Ia (thermonuclear) and Type II (core collapse) supernovae. In th...
Genetic Diversity of Chinese Indigenous Pig Breeds in Shandong Province Using Microsatellite Markers
Microsatellite Marker Genetic Diversity Chinese Indigenous Pig Breeds Shandong Province
2016/5/5
To investigate the genetic diversity of six Chinese indigenous pig breeds in Shandong province (Laiwu Black, Dapulian Black, Licha Black, Yantai Black, Yimeng Black and Wulian Black), explain their ge...
A Unified MGF-Based Capacity Analysis of Diversity Combiners over Generalized Fading Channels
Unified MGF-Based Capacity Analysis Diversity Combiners Generalized Fading Channels
2011/1/21
Unified exact average capacity results for L-branch coherent diversity receivers including equal-gain combining (EGC) and maximal-ratio combining (MRC) are not known. This paper develops a novel gener...
A Unified MGF-Based Capacity Analysis of Diversity Combiners over Generalized Fading Channels
MGF-Based Capacity Analysis Diversity Combiners Generalized Fading Channels
2011/1/4
Unified exact average capacity results for L-branch coherent diversity receivers including equal-gain combining (EGC) and maximal-ratio combining (MRC) are not known. This paper develops a novel gener...
Network Diversity and Economic Development: a Comment
Network Diversity Economic Development
2010/11/16
Network diversity yields context-dependent benefits that are not yet fully-understood. I elaborate on a recently introduced distinction between tie strength diversity and information source diversity...
Luminous Blue Variable eruptions and related transients: Diversity of progenitors and outburst properties
Solar and Stellar Astrophysics (astro-ph.SR) Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/7
We present new light curves and spectra for a number of extragalactic optical transients or "SN impostors" related to giant eruptions of LBVs, and we provide a comparative discussion of LBV-like giant...
The structure of allelic diversity in the presence of purifying selection
The structure allelic diversity presence of purifying selection
2010/11/15
In the absence of selection, the structure of allelic diversity is described by the elegant sampling formula of Ewens. This formula has helped shape our expectations of empirical patterns of molecula...
Moral Realism and Cross-Cultural Normative Diversity, Comment on Henrich et al.
Cross-cultural normative diversity moral anti-realism ultimatum game dictator game public good game
2011/9/5
We discuss the implications of the findings reported in the target article for moral theory, and argue that they represent a clear and genuine case of fundamental moral disagreement. As such, they sup...
Diversity Spectra of Spatial Multipath Fading Processes
Diversity Spectra Spatial Multipath Fading Processes
2010/12/10
We analyse the spatial diversity of a multipath fading process for a finite region or curve in
the plane. By means of the Karhunen-Loève (KL) expansion, this diversity can be characterised
by the ei...