搜索结果: 1-15 共查到“理学 fragmentation”相关记录59条 . 查询时间(0.157 秒)
PLANETESIMALS TO PROTOPLANETS. I. EFFECT OF FRAGMENTATION ON TERRESTRIAL PLANET FORMATION
n-body simulations planetary systems solar system
2015/12/25
We present results from a dozen direct N-body simulations of terrestrial planet formation with various initial conditions. In order to increase the realism of our simulations and investigate theeffect...
Catastrophic disruption of asteroids and family formation:a review of numerical simulations including both fragmentation and gravitational reaccumulations
Asteroids composition Asteroids dynamics Collisional physics Impact processes
2015/12/25
In the last few years, thanks to the development of sophisticated numerical codes, a major breakthrough has been achieved in our understanding of the processes involved in small bodycollisions. In thi...
Formation of Asteroid Families by Catastrophic Disruption:Simulations with Fragmentation and Gravitational Reaccumulation
asteroids dynamics planetesimals resonances surfaces asteroids
2015/12/25
This paper builds on preliminary work in which numerical simulations of the collisional disruption of large asteroids (represented by the Eunomia and Koronis family parent bodies) were performed and w...
Exponential decay for the fragmentation or cell-division equation
Exponential decay fragmentation cell-division equation
2015/7/14
We consider a classical integro-differential equation that arises in various applications as a model for cell-division or fragmentation. In biology, it describes the evolution of the density of cells ...
Absence of fragmentation in two-dimensional Bose-Einstein condensation
Bose gas condensate harmonic oscillator characteristic function
2014/12/20
We investigate the possibility that the BEC-like phenomena recently detected on two-dimensional finite trapped systems consist of fragmented condensates. We derive and diagonalize the one-body density...
Seismic structure in central Mexico: Implications for fragmentation of the subducted Cocos plate
Seismic structure in central Mexico The subducted Cocos plate
2014/4/10
The fine-scale seismic structure of the central Mexico subduction zone is studied using moderate-sized (M4-6) intraslab earthquakes. Regional waveforms from the Mapping the Rivera Subduction Zone (MAR...
One-sided FKPP travelling waves in the context of homogenous fragmentation processes
FKPP equation travelling wave homogenous fragmentation process killed fragmentation product martingale spectrally negative Levy process
2012/4/23
In this paper we introduce the one-sided FKPP equation in the context of homogenous fragmentation processes. More specifically, the main result of the present paper is concerned with the existence and...
Numerical solution of $Q^2$ evolution equations for fragmentation functions
Numerical solution fragmentation functions
2011/7/21
Semi-inclusive hadron-production processes are becoming important in high-energy hadron reactions. They are used for investigating properties of quark-hadron matters in heavy-ion collisions, for findi...
A one-dimensional coagulation-fragmentation process with a dynamical phase transition
one-dimensional coagulation-fragmentation process dynamical phase transition Probability
2011/9/13
Abstract: We introduce a reversible Markovian coagulation-fragmentation process on the set of partitions of $\{1,...,L\}$ into disjoint intervals. Each interval can either split or merge with one of i...
Dense core formation by fragmentation of velocity-coherent filaments in L1517
Stars: formation - ISM: clouds - molecules - kinematics and dynamics - structure - Radio lines: ISM
2011/9/28
Context. Low-mass star-forming cores differ from their surrounding molecular cloud in turbulence, shape, and density structure. Aims. We aim to understand how dense cores form out of the less dense cl...
Branching Markov processes on fragmentation trees generated from the paintbox process
Branching Markov processes fragmentation trees the paintbox process Probability
2011/9/5
Abstract: A fragmentation of a set $A$ is a graph with vertices labeled by subsets of $A$ which obey a certain parent-child relationship. A random fragmentation tree is a probability distribution on t...
The Jeans Mass as a Fundamental Measure of Self-Gravitating Disc Fragmentation and Initial Fragment Mass
stars: formation accretion accretion discs methods:analytical
2011/9/28
As a formation route for objects such as giant planets and low-mass stars in protostellar discs (as well as stars in AGN discs), theories of self-gravitating disc fragmentation need to be able to pred...
Quantum Zeno-based control mechanism for molecular fragmentation
Quantum Zeno-based molecular fragmentation mechanism
2011/9/14
Within a scenario grounded on the quantum Zeno effect, a quantum control mechanism is proposed for molecular fragmentation processes. In particular, we focus on the van der Waals Ne-Br2 complex, which...
A Statistical Model of Aggregates Fragmentation
Aggregates Fragmentation A Statistical Model
2011/9/13
A statistical model of fragmentation of aggregates is proposed, based on the stochastic propagation of cracks through the body. The propagation rules are formulated on a lattice and mimic two importan...
SIDIS in the target fragmentation region: polarized and transverse momentum dependent fracture functions
SIDIS polarized transverse momentum
2011/4/7
SIDIS in the target fragmentation region: polarized and transverse momentum dependent fracture functions 。