搜索结果: 136-150 共查到“理学 environment”相关记录309条 . 查询时间(0.098 秒)
Bar fraction in lenticular galaxies: dependence on luminosity and environment
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/5
We present a study of bars in lenticular galaxies based on a sample of 371 galaxies from the SDSS-DR 7 and 2MASS in optical and near-infrared bands, respectively. We found a bar in 15% of the lenticul...
The behavior of many quantum systems strongly depends on their interaction with the
environment. The dissipative processes induced by interaction with the environment have
a broad area of applicatio...
An investigation of the close environment of beta Cep with the VEGA/CHARA interferometer
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/28
High-precision interferometric measurements of pulsating stars help to characterize their close environment. In 1974, a close companion was discovered around the pulsating star beta Cep using the spec...
Dependence of Star Formation Activity On Stellar Mass and Environment From the Redshift One LDSS-3 Emission Line Survey (ROLES)
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/27
Using the sample from the \it Redshift One LDSS3 Emission line Survey \rm (ROLES), we probe the dependence of star formation rate (SFR) and specific star formation rate (sSFR) as a function of stellar...
The Developmental Systems Perspective: Organism-environment systems as units of development and evolution
developmental developmental extra-genetic psychobiology
2011/9/5
Developmental systems theory is an attempt to sum up the ideas of a research tradition in developmental psychobiology that goes back at least to Daniel Lehrman�s work in the 1950s. It yields a ...
Galactic Coronae in the Intracluster Environment: Semi-confined Stellar-feedback-driven Outflows
High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/24
Recently X-ray observations have shown the common presence of compact galactic coronae around intermediate-mass spheroid galaxies embedded in the intracluster/intragroup medium (ICM). We conduct 2-D h...
Dependence of Repeated Interaction Asymptotic States on Environment
repeated interaction asymptotic states open quantum systems Liouville operator
2010/12/15
Consider a quantum system S that interacts sequentially with a chain (environment) of identical
probes C = P + P + : : :, with each interaction governed by a xed interaction time and operator V .I...
Optimal control of risk process in a regime switching environment
Regime switching diffusion continuity of the value function
2010/12/8
This paper is concerned with cost optimization of an insurance company. The sur-plus of the insurance company is modeled by a controlled regime switching diffusion,where the regime switching mechanism...
The Sun's magnetic field warps its environment（图）
The Sun's magnetic field environment astronauts
2010/9/21
The Sun's extended magnetic field provides a vital shield for astronauts; without it they would be left exposed to potentially deadly cosmic rays entering in from outside the solar system. Now, a grou...
Ballistic regime for random walks in random environment with unbounded jumps and Knudsen billiards
cosine law stochastic billiard Knudsen random wal random medium random walk in random environment unbounded
2010/11/26
We consider a random walk in a stationary ergodic environment
in Z, with unbounded jumps. In addition to uniform ellipticity and a bound on the tails of the possible jumps, we assume a condition of s...
Three qubits in a symmetric environment: dissipatively generated asymptotic entanglement
Three qubits symmetric environment asymptotic entanglement
2010/10/18
We study the asymptotic entanglement of three identical qubits under the action of a Markovian open system dynamics that does not distinguish them.We show that by adding a completely depolarized qubit...
An Alternative to Decoherence by Environment and the Appearance of a Classical World
Decoherence by Environment Appearance Classical World
2010/10/18
We provide an alternative approach to the decoherence-by-environment paradigm in the field of the quantum measurement process and the appearance of a classical world. In contrast to the decoherence ap...
Seasonal and spatial variations analysis of pollution status of Ondo coastal environment Nigeria using principal component analysis
PCA sediments seasonal and spatial variation metals coastal area
2017/8/9
The variation in environmental quality of Ondo coast between seasons and sites were evaluated using principal component analysis (PCA). Seventeen metals were analysed in water and sediments with five ...
Nanoparticles in boreal forest and coastal environment: a comparison of observations and implications of the nucleation mechanism
Nanoparticles boreal forest coastal environment the nucleation mechanism
2010/8/16
The detailed mechanism of secondary new particle formation in the atmosphere is still under debate. It is proposed that particle formation happens via activation of 1–2 nm atmospheric neutral molecula...
Ozone reservoir layers in a coastal environment – a case study in southern Taiwan
Ozone reservoir layers a coastal environment southern Taiwan
2010/8/12
The air layer between the nocturnal boundary layer and the top of the daily mixing layer in an ozone-polluted area is known to serve as an ozone reservoir since the ozone that is produced in the mixin...