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为了研究设计的脱壳弹出炮口后弹托与弹体的分离状态和气动变化，采用Star-CCM+重叠网格技术耦合流体控制方程和刚体的六自由度运动方程对弹托分离进行了数值仿真，得到了固定初速下弹托与弹体的运动轨迹及分离姿态。将试验结果与仿真结果进行对比，分离状况与仿真基本吻合。最后研究了分离过程中弹托与弹体的气动力变化，为次口径脱壳弹弹托分离技术提供了理论依据及数据支撑。
Construction of Star Catalogue Based on SVM
Navigation-star catalogue Satellite attitude Machine-learning SVM
2015/11/23
The method of constructing navigation star catalogue always based on Magnitude Filtering Method (MFM). But it did not work well because of two typical disadvantages. On one side it would extract so ma...
COMPARISON OF DEMS FROM STAR-3i INTERFEROMETRIC SAR AND SCANNING LASER
bald-earth DEM Digital Elevation Model IFSAR interferometry laser lidar SAR STAR-3i
2014/12/22
Within the past few years there has been a significant increase in the use of Digital Elevation Models (DEMs), for applications as varied as telecommunications and precision agriculture, forestry and ...
Investigation on flame retardancy, combustion and pyrolysis behavior of flame retarded unsaturated polyester resin with a star-shaped phosphorus-containing compound
Unsaturated polyester resin Thermal degradation Pyrolysis evolved gas analysis Flame retardancy
2015/3/24
The phosphorus-containing star-shaped flame retardant (TRIPOD-DOPO) was synthesized, while the
flame retardant unsaturated polyester resins (FR-UPRs) composites with various amounts of TRIPODDOPO wer...
STAR-BASED METHODS FOR PLEIADES HR COMMISSIONING
Image Quality Calibration MTF Focus Geometry Radiometry Micro-vibrations Star
2014/4/25
PLEIADES is the highest resolution civilian earth observing system ever developed in Europe. This imagery program is conducted by the French National Space Agency, CNES. It has been operating since 20...
An AUTONOMOUS STAR IDENTIFICATION ALGORITHM BASED ON THE DIRECTED CIRCULARITY PATTERN
Angular distance Matching probability Matching group Directed circularity pattern The longest matching chain
2014/4/25
The accuracy of the angular distance may decrease due to lots of factors, such as the parameters of the stellar camera aren't calibrated on-orbit, or the location accuracy of the star image points is ...
Dielectron continuum production from $\sqrt{s_{NN}}$ = 200 GeV p + p and Au + Au collisions at STAR
Dielectron continuum production sqrt Au + Au collisions STAR
2011/7/20
We present the first STAR dielectron measurement in 200 GeV p + p and Au + Au collisions. Results are compared to hadron decay cocktails to search for vector meson in-medium modification in low mass r...
I present recent results from jets and jet-like correlation measurements from STAR. The pp data are compared to those from Au-Au collisions to attempt to infer information on the medium produced and h...
We present the first results using the STAR detector from the Beam Energy Scan (BES) program at the Relativistic Heavy-Ion Collider (RHIC). In this program, Au ion collisions at center of mass energie...
STAR Measurements of Bottom to Charm Ratio and Heavy Quark Interaction with the QCD Medium through Non-Photonic Electron-Hadron Correlations
STAR Charm Ratio Heavy Quark Interaction QCD Medium
2011/7/20
We present STAR measurements of relative charm and bottom contributions to NPE from $p+p$ collisions at $\sqrt{s}$= 200 and 500 GeV energies. We report the total bottom quark production cross section ...
Gluon polarization measurements with inclusive jets at STAR
Gluon polarization inclusive jets STAR
2011/7/20
At RHIC kinematics, polarized jet hadroproduction is dominated by $gg$ and $qg$ scattering, making the jet double longitudinal spin asymmetry, $A_{LL}$, sensitive to gluon polarization in the nucleon....
评估STAR网络可靠性的新方法
概率推理 自适应性 路由算法 贝叶斯网
2013/5/2
针对具有故障部件的STAR互联网络的可靠性问题，在有条件的容错模型和概率模型的基础上，提出了一种新的评估STAR网络可靠性的方法。该方法通过网络的二连通率来进行评估。首先提出了一个自适应的容错并行路由算法，通过该算法的多次执行，得到用于计算网络二连通率的相关条件参数，在此基础上建立了用于推断网络二连通率的贝叶斯网模型。然后通过基于贝叶斯网的概率推理，可得到反映网络可靠性的网络二连通率。研究结果表明...
Current State of Informatics in Central, Eastern and Southern Europe: The IT STAR Experience
Informatics Central Eastern Southern Europe IT STAR Experience
2010/9/21
This article on the current state of informatics in Central, Easternand Southern Europe is based on the activities and experience ofleading computer societies, representatives of academia, government,...
Color Changes and Carotenoid Pigment Loss in Retentate from Star Ruby Grapefruit Juice under Refrigerated Conditions
Star Ruby grapefruit retentate visual color changes
2009/6/17
Retentate, highly pigmented pulp, from red colored Star Ruby grapefruit juice was placed in glass test tubes and stored in a refrigerated locker at 4.5°C for 8 weeks. The effect of light exposure (Coo...