Chung Wen Ma

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Based on AMulti-Phase Transport model, the elliptic flow v2 of φmeson which is reconstructed from K+K− at top relativistic heavy ion collider (RHIC) energy at Brokehaven National Laboratory (BNL) has been studied. The dependences of the transverse momentum pT and of the centrality have been presented and the rescattering effect of φ in the hadronic phase(More)
一個MST問題的變形問題稱為斯坦納樹 問題(Steiner tree problem)。給定一個無向圖 G=(V,E),一個非負數的權重函數在邊上及一 個節點集合 RV,一棵斯坦納樹(Steiner Tree) 定義為圖上的一棵樹連通 R 內的所有節點。斯 坦納樹問題(STP)為在圖上找一棵權重加總最小 的斯坦納樹 [12,18]。STP 有許多方面的應用, 例如群播繞境(Multicast routing) [5,6,9,10,15]、 生 物 上 的 演 化 樹 之 重 建 (Evolutionary tree reconstruction in biology) [6,15,20]與大型積體電 路繞線(VLSI routing) [4,6,9,15,16]。然而 STP 已被證明為(More)
Based on A Multi-Phase Transport (AMPT) model, the elliptic flow v2 of φ meson which is reconstructed from K+K− at top relativistic heavy ion collider (RHIC) energy at Brookhaven Nation Laboratory (BNL) has been studied. The dependences of the transverse momentum pT and of the centrality have been presented and the rescattering effect of φ in the hadronic(More)
A typical insoluble chlorinated aromatic dye (CAD), disperse red (DR), was used to explore the reaction mechanism and kinetics of photodegradation in non-ionic surfactant solutions. The use of an additional hydrogen source and photosensitizer is also studied to improve the decay rates. The decay rate of dye in surfactants depends on the Km of surfactants(More)
This paper reports a study of measurement of horizontal visual sensitivity limits for 16 subjects in single-target and double-targets detection tasks. Two phases of tests were conducted in the double-targets task; targets of the same difficulty were tested in phase one while targets of different difficulty were tested in phase two. The range of sensitivity(More)
Anisotropic flows (v2 and v4) of light nuclear clusters are studied by Isospin-Dependent Quantum Molecular Dynamics model for the system of Kr + Sn at intermediate energy and large impact parameters. Number-of-nucleon scaling of the elliptic flow (v2) are demonstrated for the light fragments up to A = 4, and the ratio of v4/v 2 2 shows a constant value of(More)
The ∆-scaling method and the multiplicity information entropy has been applied to the relativistic collisions of p+p, C+C and Pb+Pb which were simulated by a Monte Carlo package, LUCIAE 3.0. In addition, the heat capacities of different mesons and baryons have been extracted from event-by-event temperature fluctuation. 1. ∆-scaling and information entropy(More)
Nucleon-nucleon momentum correlation function have been presented for nuclear reactions with neutron-rich or proton-rich projectiles using a nuclear transport theory, namely Isospin-Dependent Quantum Molecular Dynamics model. The relationship between the binding energy of projectiles and the strength of proton-neutron correlation function at small relative(More)
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