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Transactions of Nonferrous Metals Society of China 2010年第6期20卷 1072-1077页

作者： tsai De-chang HWANG Weng-sing Department of Materials Science and Engineering National Cheng Kung University

The purpose of this study is to predict the morphologies in the solidification process for Cu-0.6Cr(mass fraction,%)alloy by vacuum continuous casting(VCC)and verify its accuracy by the observed experimental *** numerical simulation aspect, finite difference(FD)method and modified cellular automaton(MCA)model were used to simulate the macro-temperature field, micro-concentration field,nucleation and grain growth of Cu-0.6Cr alloy using real data from actual casting *** the observed casting experiment,the preliminary grain morphologies are the directional columnar grains by the VCC *** solidification morphologies by MCAFD model are in agreement with the result of actual casting experiment well.

关键词： Cu-Cr alloy vacuum continuous casting solidification morphology simulation modified cellular automaton model finite difference method

Solid codes and the uniform density of fd-domains

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Science China Mathematics 2007年第7期50卷 1026-1034页

作者： Yen-Shung tsai College of Science Chung Yuan Christian UniversityChung-Li 320TaiwanChina

By means of further investigation of solid codes,the problem“Is every fd-domain uni- formly dense”proposed by Yuqi Guo,*** and *** in 1988 is solved in this paper.

关键词： solid code fd-domain uniformly dense language 20M35 68Q70

Strain measurement of fiber optic sensor surface bonding on host material

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中国有色金属学会会刊：英文版 2009年第B09期19卷 143-149页

作者： Shiuh-Chuan HER Chang-Yu tsai Department of Mechanical Engineering Yuan Ze University

Fiber optic sensor has been widely used as a structural health monitoring device by either embedding into or surface bonding onto the structures. The strain of optic fiber induced by the host material is strongly dependent on the bonding characteristics which include the protective coating, adhesive layer and the length of bonding. The strains between the fiber optics and host structure are not exact the same. The existence of the protective coating and adhesive layer would affect the strain measured by the surface bonding optic sensor. The analytical expression of the strain in the optic fiber induced by the host material was presented. The results were validated by the finite element method. The theoretical predictions reveal that the strain in the optical fiber is lower than the strain of host material. Parametric study shows that a long bonding length and high modulus of protective coating would increase the percentage of strain transferring into the optical fiber. Experiments were conducted by using Mach-Zehnder interferometer to measure the strain of the surface bonding optic fiber induced by the host structure. Good agreements were observed in comparison with the experimental results and theoretical predictions.

关键词：光纤传感器主机结构应变测量粘接材料表面结构健康监测粘结长度光纤应变

Spatial autocorrelation calculations of the nine malignant neoplasms in Taiwan in 2005-2009: a gender comparison study

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Chinese Journal of Cancer 2011年第11期30卷 757-765页

作者： Pui-Jen tsai Center for General Education Aletheia University

Spatial analytical techniques and models are often used in epidemiology to identify spatial anomalies (hotspots) in disease regions. These analytical approaches can be used to identify not only the location of such hotspots, but also their spatial patterns. We used spatial autocorrelation methodologies, including Global Moran's I and Local Getis-Ord statistics, to describe and map spatial clusters and areas in which nine malignant neoplasms are situated in Taiwan. In addition, we used a logistic regression model to test the characteristics of similarity and dissimilarity between males and females and to formulate the common spatial risk. The mean found by local spatial autocorrelation analysis was used to identify spatial cluster patterns. We found a significant relationship between the leading malignant neoplasms and well-documented spatial risk factors. For instance, in Taiwan, the geographic distribution of clusters where oral cavity cancer in males is prevalent was closely correspond to the locations in central Taiwan with serious metal pollution. In females, clusters of oral cavity cancer were closely related with aboriginal townships in eastern Taiwan, where cigarette smoking, alcohol drinking, and betel nut chewing are commonplace. The difference between males and females in the spatial distributions was stark. Furthermore, areas with a high morbidity of gastric cancer were clustered in aboriginal townships where the occurrence of Helicobacter pylori is frequent. Our results revealed a similarity between both males and females in spatial pattern. Cluster mapping clarified the spatial aspects of both internal and external correlations for the nine malignant neoplasms. In addition, using a method of logistic regression also enabled us to find differentiation between gender-specific spatial patterns.

关键词：空间自相关分析台湾地区恶性肿瘤性别 Logistic 逻辑回归模型空间分析技术空间格局

Deterministic quantum communication using the symmetric W state

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Science China(Physics,Mechanics & Astronomy) 2013年第10期56卷 1903-1908页

作者： tsai Chia-Wei HWANG Tzonelih Smart Network System Institute at Institute for Information Industry Department of Computer Science and Information Engineering National Cheng Kung University

This study proposes a new coding function for the symmetric W state. Based on the new coding function, a theoretical protocol of deterministic quanama communication （DQC） is proposed. The sender can use the proposed coding function to encode his/her message, and the receiver can perform the imperfect Bell measurement to obtain the sender＇s message. In comparison to the existing DQC protocols that also use the W class state, the proposed protocol is more efficient and also more practical within today＇s technology. Moreover, the security of this protocol is analyzed to show that any eavesdropper will be detected with a very high probability under both the ideal and the noisy quantum channel.

关键词： deterministic quantum communication symmetric W state imperfect Bell measurement

Multi-party quantum secret sharing based on two special entangled states

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Science China(Physics,Mechanics & Astronomy) 2012年第3期55卷 460-464页

作者： tsai ChiaWei HWANG Tzonelih Computer Science and Information Engineering Department National Chengkung University

A multi-party quantum secret sharing protocol using two entangled states, φ0〉 = 1/√2 （1＋）n ＋ 1-）n） and （φ1）1） =1/√2 （1＋）n -1-〉n）, is proposed and analyzed. In this protocol, without requiring to generate any photon or do any local unitary operation, an agent can obtain a shadow of the secret key by simply performing a measurement of single photon. Furthermore, the security of the protocol is analyzed. It shows that no agent can obtain the manager＇s secret without the help of the other agents, and any eavesdropper will be detected if he/she tries to steal the manager＇s secret under ideal or noisy quantum channels.

关键词： entangled state local unitary operation measurement of single photon

常见的恒星质量和恒星形成率计算方法之间的对比

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中国科学院大学学报（中英文） 2024年第3期41卷 312-320页

作者：李翠环李国栋蔡肇伟单增罗布西藏大学理学院物理系拉萨850000 西藏大学宇宙线教育部重点实验室拉萨850000 中国科学院国家天文台北京100101 中国科学院大学北京100049 中国科学院国家天文台中国科学院FAST重点实验室北京100101

针对斯隆数字巡天计划中有测光及光谱认证的正常星系的样本,利用天文多波段巡天数据,分别使用恒星质量和恒星形成率(SFR)的数种不同计算方法,从原理到结果进行相互对比。研究发现,不同的恒星质量估算方法的结果相互差异并不显著,然而SF... 详细信息

针对斯隆数字巡天计划中有测光及光谱认证的正常星系的样本,利用天文多波段巡天数据,分别使用恒星质量和恒星形成率(SFR)的数种不同计算方法,从原理到结果进行相互对比。研究发现,不同的恒星质量估算方法的结果相互差异并不显著,然而SFR的不同方法之间存在不同程度且重要的误差。因此,在对星系间SFR进行相互比较,或是研究星系演化时的SFR分析时,应使用相类似的观测数据资料,以及同一种SFR估算方式,避免不同估算方式的偏差造成的错误解读。

关键词：星系恒星质量恒星形成率星系演化

A Debris-flow Simulation Model for the Evaluation of Protection Structures

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Journal of Mountain Science 2007年第3期4卷 193-202页

作者： tsai Yuanfan Associate Professor of Social Studies Education National Taipei University of Education

Debris flow is the flow of a solid-fluid mixture and in this investigation it is treated as the flow of a continuum in routing. A numerical model is proposed describing debris flow including erosion and deposition processes with suitable boundary con-ditions. The numerical model is applied to evaluate the effects of protection structures against debris flow caused by heavy rainfall on the Shen-Mu Stream of Nantou County located in central Taiwan. Simulation results indicated that the proposed model can offer useful pre-planning guidelines for engineers.

关键词： Debris flow numerical simulation

An evaluation framework for software crowdsourcing

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Frontiers of Computer Science 2013年第5期7卷 694-709页

作者： Wenjun WU Wei-Tek tsai Wei LI State Key Laboratory of Software Development Environment Beihang University Beijing 100191 China School of Computing Informatics and Decision Systems Engineering Arizona State University Tempe AZ85281 USA Department of Computer Science and Technology INLIST Tsinghua University Beijing 100084 China

Recently software crowdsourcing has become an emerging area of software engineering. Few papers have pre- sented a systematic analysis on the practices of software crowdsourcing. This paper first presents an evaluation frame- work to evaluate software crowdsourcing projects with re- spect to software quality, costs, diversity of solutions, and competition nature in crowdsourcing. Specifically, competi- tions are evaluated by the min-max relationship from game theory among participants where one party tries to minimize an objective function while the other party tries to maximize the same objective function. The paper then defines a game theory model to analyze the primary factors in these min- max competition rules that affect the nature of participation as well as the software quality. Finally, using the proposed eval- uation framework, this paper illustrates two crowdsourcing processes, Harvard-TopCoder and AppStori. The framework demonstrates the sharp contrasts between both crowdsourc- ing processes as participants will have drastic behaviors in engaging these two projects.

关键词： crowdsourcing software engineering competi-tion rules game theory

“Smurf”-ing tumors on the chromatin through RNF20

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Protein & Cell 2012年第2期3卷 81-83页

作者： Wen-Wei tsai Peptide Biology Laboratories Salk Institute for Biological StudiesLa JollaCA 92037USA

In the modern mythology of Dutch comic world,Smurfs are little blue creatures who say“smurf”for anything they *** the parlance of molecular biology,there live two Smurfs so named because they are Smad ubiquitination regulator factor 1 and *** like those blue devils on the television,the molecular Smurfs are also versatile;capable of controlling bone development,actin cytoskeleton dynamics,cellular senescence,and planar cell polarity in addition to their prototypic function in transforming growth factorβ(TGF-β)***,the realm of Smurf influence has expanded even further to epigenetic modifications of histones governing the chromatin landscape.A recent study from Ying E.

关键词： Dutch expanded versatile