To analyze the characteristics of internal flow and phase interaction in a gas-liquid two-phase pump, influence Inlet Gas Void Fraction ( IGVF ), discharge coefficient, medium viscosity were investigated using combinations air-water air-crude. Simulations performed ANSYS_CFX at different s various values coefficient. Structured grid for full passage was generated ICEM_CFD TurboGrid. Under conditions = 0% (pure water) 15%, reliability numerical method proved by means comparison with...

Determination of the accurate astrophysical S factor {$^{12}$C($\alpha,\gamma$)$^{16}$O} reaction has been regarded as a holy grail nuclear astrophysics for decades. In current stellar models, knowledge that value to better than 10\% is desirable. Due practical issues, tremendous experimental and theoretical efforts over nearly 50 years are not able reach this goal, published values contradicted with each other strongly their uncertainties 2 times larger required precision. To end we have...

Road traffic management system generates a huge number of log data which can help the managers to monitor drivers' behavior, identify condition and extract some useful information. However, due high production rate diversity data, it still is big challenge store analyze them. Applying distributed storage parallel computing in clusters improve respond speed searching analyzing data. In this work, we design platform integrates technologies i.e. Hadoop, Spark, Hive, Flume etc. collect, mass...

The accurate assessment of railway irregularities plays a pivotal role in ensuring both operational safety and passenger comfort, especially the context high-speed railways. Traditional static methods for monitoring these irregularities, such as absolute measurement trolley systems relying on total stations, have proven to be inefficient. On other hand, relative like global navigation satellite system/inertial system (GNSS/INS) integrated concept offer high efficiency but come with...

Traffic conflicts between ships are one of the most important reasons causing delays in restricted waterways.Aiming to improve traffic efficiency, a hybrid self-organizing scheduling (HSOS) method for two-way waterways is proposed.Ship transportation system treated as distributive and self-organized under uncertainties.Each ship makes decision on when enter waterway how keep safe distance them, while VTS center could manage direction flow according navigation situations.In order reduce...

Image zooming is a prime and important problem in image processing. An decomposition method called empirical mode (EMD) first addressed this paper, then the problems such as searching local extrema points boundary extension are discussed detail. On basis, new using 2 dimensional (2D) EMD technique proposed. The main procedures designed following: first, by 2D method, an decomposed into several layers, where each of them contains different details or possesses roughness; second, layer zoomed...

Abstract Currently, laser sensors are widely utilized in railway systems for monitoring rail wear. However, the lack or insufficiency of waist data poses a challenge to accurately match profiles and calculate In this paper, we propose novel approach dynamic wear that comprises three major modules: filtering methodology smooth profile data, fine compensation calibrate angle distortion, fast alignment. Initially, AF technique Kalman filter applied reconstruct profile. This is followed by...

A phase change heat storage device for an active thermoelectric pump was tested its and release performance at different operating voltages source temperatures. study on release/discharge characteristics of a exchanger is proposed. The experimental results show that there are significant differences in heating/discharging time the under conditions heating conditions. When voltage high temperature waste high, short. Continuing to increase efficiency during this period will difference between...

The measurement of parity-violating (PV) observables in few-nucleon system can shed light on our current understanding the weak interaction between nucleons. Theoretical models describe nucleon-nucleon at low energies use a series undetermined parameters. Two parity violating measurements have been considered: capture polarized slow neutrons hydrogen ( + p ? d ?) Los Alamos National Laboratory for first phase and Oka Ridge second helicity dependence deuteron photodisintegration cross section...

We study the reaction cross sections (σR) and root-mean-square (RMS) radii of 8Li 8B, halo-like nuclei, with stable target 12C, 27Al 9Be within standard optical-limit Glauber model, using densities obtained from relativistic mean-field (RMF) formalisms other types distributions. It is found that experimental σR can be reproduced well at high energy. The RMS radius Δr extracted by RMF-theory harmonic oscillator distribution are compared. find 8B larger than those 8Li. In addition, we analyze...

An upper bound for the smallest period of Fibonacci module sequence is obtained, which 6N, and more accurate convenient than current results. Since twice that two-dimensional Arnold transformation, transformation naturally 3N. It a great advance compared with existing best N <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> /2 in literatures. Moreover, many important properties are gained, provide new thought study on necessary...

The Twin Fibonacci sequences are first defined and their linear expressions given in this paper.The sequence{U <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">n</sub> } which is constituted by the matrix eigenvalues a discussion to its properties,including some exact division properties of taken modulo m,and theorem on least period for module sequence{u (p <sup xmlns:xlink="http://www.w3.org/1999/xlink">r</sup> )} shown. Moreover,the...

Laser damage threshold is one of the most important parameters for optical materials used in ultrafast laser system and related application system. We have investigated experimentally on surface gold sample induced by femtosecond pulses using a so called ablation diameter regression technique. More than regime, which has logarithmic relationship between ablated fluence, been found. Correspondently, almost order magnitude difference, from 1.55 J/cm² to 12.01 . In our opinion,...

This paper describes a 25m large-scale radio telescope's automatic control system of changing feeds. The software enables good man-machine interface for feeds instead artificial feeds, which saves us lot time feed and improves work efficiency. has achieved remote equipment house, accurate location quickly, real-time collecting data. Through the cameras installed in house we can view lifting dropping state achieve monitoring

Chaos is a common phenomenon in nature and social sciences. As well known, chaos has multiple definitions, there are both differences connections between them. The unique properties of chaotic systems can be leveraged to address challenges communication, security, data processing, system analysis, control across different domains. For semi-flows, this paper introduces two important concepts corresponding discrete dynamical systems, finitely pairwise sensitivity. Since Tent map its induced...

Abstract The study of interactions between a high-power laser and atoms has been one the fundamental interesting topics in strong field physics for decades. Based on nonperturbative model, ten years ago, we developed set programs to facilitate circularly polarized atomic hydrogen. These included only contribution from bound states hydrogen atom. However, as intensity increases, continuum excitation ionization processes becomes larger can no longer be neglected. Furthermore, because original...