Approximate dynamic

In this work we proposed a simple method to determine the coordinate of interface of two-component Bose-Einstein condensates (BECs) in double parabola approximation (DPA). Based on this idea, the static properties of BECs have been investigated totally in DPA.

6p viambani 18-06-2024 1 1   Download

presents the following content: Chapter 1 introduction, chapter 2 approximation of a function, chapter 3 numerical calculus, chapter 4 ordinary differential equations, chapter 5 numerical methods for matrices, chapter 6 spectral analysis, chapter 7 partial differential equations, chapter 8 molecular dynamics simulations, chapter 9 modeling continuous systems, chapter 10 monte carlo simulations, chapter 11 genetic algorithm and programming, chapter 12 numerical renormalization.

402p zizaybay1103 29-05-2024 3 2   Download

We study the dynamics of a double-well BEC system subjected to oscillating dissipation. The macroscopic model is described within the mean-field approximation while the noise effect due to large reservoir fluctuation has been averaged out to zero. We chose a simple dissipative memory kernel to produce a time-dependent oscillating dissipation. Our numerically calculated phase-space portraits and Lyapunov exponents show an enhanced route to chaos as one increases the driving dissipation amplitude.

14p dianmotminh02 03-05-2024 1 1   Download

Part 1 book "Quantum physics - A text for graduate students" includes content: Quantum basics - statics; the Schrödinger equation in one dimension; quantum basics - dynamics; one - and -two particle systems in three dimensions; symmetries; stationary approximation methods.

233p muasambanhan10 03-04-2024 4 1   Download

Ebook "State-to-state dynamical research in the F+H2 reaction system" addresses two important and also challenging issues in the research of chemical reaction dynamics of F+H2 system. One is to probe the reaction resonance and the other is to determine the extent of the breakdown of the Born-Oppenheimer approximation (BOA) experimentally. The author introduces a state-of-the-art crossed molecular beam-scattering apparatus using a hydrogen atom Rydberg "tagging" time-of-flight method, and presents thorough state-to-state experimental studies to address the above issues.

88p tudohanhtau1006 29-03-2024 3 1   Download

This paper focuses on exploring the dynamic relationship between real estate prices, government budget, and economic growth in the case of an emerging economy. Using quarterly data covering in the period of Q1/2008 to Q4/2018 with approximately 44 observations and applying the Autoregressive Distribution Lagged (ARDL) approach, results reveal that, in both the short-run and long-run, economic growth is highly affected by fluctuations of the present, and past economic growth. Besides, there exists a long-run relationship between government budget and economic growth.

9p longtimenosee06 27-03-2024 8 1   Download

Ebook "The non-ergodic nature of internal conversion: An experimental and theoretical approach" investigates the transitions from one electronically excited state to another. Such processes - the fastest of events in chemistry - can be studied with femtosecond resolution, and Thomas S. Kuhlman approaches the question both with experimental and theoretical methods. His approach contributes to explain processes of high importance to all scientific fields concerned with the interaction between light and matter: the deactivation of the electronically excited states after excitation.

137p coduathanh1122 27-03-2024 6 1   Download

Part 2 book "Introduction to quantum mechanics" includes content: Time independent perturbation theory; the varitional principle; the WKB approximation; scattering; quantum dynamics; afterword.

291p muasambanhan07 18-02-2024 3 1   Download

Ebook "Western North American juniperus communities: A dynamic vegetation type" woodlands occupy approximately 55 million hectares, an area larger than the state of Texas. Various species of Juniperus have been increasing in density and are expanding into associated grasslands, reducing the size of the grasslands. The reason for the Juniperus expansion is highly debated, but has important implications for global change and fire regime studies.

326p tachieuhoa 28-01-2024 2 2   Download

Ebook "Spin dynamics in radical pairs" sheds new light on the dynamical behaviour of electron spins in molecules containing two unpaired electrons (i.e. a radical pair). The quantum dynamics of these spins are made complicated by the interaction between the electrons and the many nuclear spins of the molecule; they are intractable using analytical techniques, and a naïve numerical diagonalization is not remotely possible using current computational resources.

167p lamquandat 28-12-2023 6 2   Download

Ebook "Dynamic bayesian networks - Representation, inference and learning" includes content: Introduction, DBNs - Representation, exact inference in DBNs, approximate inference in DBNs - Deterministic algorithms, approximate inference in DBNs - Stochastic algorithms, DBNs - learning.

223p haojiubujain07 20-09-2023 8 4   Download

Ebook "Neural networks - A comprehensive foundation" includes content: Introduction, learning processes; single layer perceptrons; multilayer perceptrons; radial basis function networks; support vector machines; committee machines; principal components analysis; self organizing maps; information theoretic models; stochastic machines and their approximates rooted in statistical mechanics; neurodynamic programming; temporal processing using feedforward networks; neurodynamics; dynamically driven recurrent networks.

823p haojiubujain07 20-09-2023 6 2   Download

An approximate method is proposed for determining the aerodynamic effect of coherent vortex structures (CVS) of atmospheric turbulence on an aircraft. As a source of the CVS the vortex wind wakes arising when the atmospheric wind flows around the mountain massif of the Son Tra peninsula, located near the Da Nang airport, and the vortex wake behind the Su-27 type aircraft in the landing configuration are considered.

20p viwolverine 11-07-2023 9 2   Download

In this paper, an approximation method is presented to calculate the reverse dynamics of the serial manipulators with rigid-flexible links. The linearization of the motion equations for a rigid-flexible translation and rotation of two-link manipulator (manipulator T-R) is addressed.

21p viwolverine 11-07-2023 4 2   Download

The aim of the research was the processing of the vibration signatures from healthy and damaged composite beams acquired with the help of a Scanning Laser Vibrometer (SLV) upon excitation and analysis of the mode shapes acquired for damage detection. The displacement mode shapes acquired were then converted into curvature mode shapes with the help of a Central Difference Approximation method (CDA).

146p runthenight07 01-03-2023 5 2   Download

In this paper, we build an incremental algorithm to find the approximate reduct according to the combined filter-wrapper approach. Experimental results on a number of sample datasets show that the proposed incremental algorithm is more efficient than some other incremental algorithms following the filter approach in terms of the number of reductive set attributes and classification accuracy.

8p vineville 08-02-2023 6 2   Download

A computational fluid dynamics method was used for prediction of flow behavior and band profiles of small- and macro-molecule compounds eluting in extra-column volumes (ECV) of an Äkta chromatographic system. The model compounds were: Acetone, bovine serum albumin and an antibody. The construction of ECV was approximated by different types of geometries, starting from the simplest two-dimensional.

10p viginny 23-12-2022 9 3   Download

In this paper, the complex conductivity including all Landau levels is calculated in a layered superconductor under magnetic field in the vortex liquid phase by using TDGL approach with thermal fluctuations modelled by the Langevin white noise. We obtain an expression summing all Landau levels in an explicit form. The rest of the paper is organized as follows. In section 2, the Lawrence-Donich model in its time dependent form is briefly recalled and the main assumptions are specified.

8p runordie3 27-06-2022 17 2   Download

In southern China, the silver pheasant (Lophura nycthemera) is a widespread species due to complex topography and sufficient habitats and food resources. We investigated the microsatellite and mitochondrial DNA control region sequence of 115 individuals from 7 locations in China to study population dynamics of the silver pheasant during the Pleistocene. The neutrality test and mismatch distribution analyses showed that population expansion began in the interglacial period (76,053 years ago), and the latest common ancestor appeared approximately 970,300 years ago.

13p dolomite36 30-12-2021 10 0   Download

The main goal of this paper is to study selected aspects of the space-Fractional Continuum Mechanical model (s-FCM) approximation. The considerations include the in-depth analysis of three generalized finite difference schemes, which are based on: (i) The rectangle rule, (ii) the trapezoidal rule, and (iii) Simpson’s (parabolas) rule, respectively. The analysis includes the dynamic (eigenvalues) response of the 1D s-FCM body.

7p guernsey 28-12-2021 4 0   Download