Java语言中的线程同步互斥研究

在介绍操作系统中引入多线程的原因后,介绍了Java语言中的多线程机制和编程实现方案,介绍了线程同步互斥机制,并用经典操作系统进程同步互斥算法实现程序,演示如何编写Java并发程序。     

Java多线程同步机制在网络售票系统中的应用

多线程的并发执行可以提高程序的执行效率,提高系统资源的利用率。然而在某些情况下,当多个线程同时访问一个变量时,如果处理不当,很可能发生混乱。而多线程同步机制的引入则可以保证多个线程可以独立运行、互不干扰。该文主要使用Java的多线程同步机制模拟网络售票过程。     

Java语言多线程技术应用研究

多线程编程是Java语言的一个很重要的特点,它是面向对象程序设计的关键技术之一.本文简要的探讨了Java语言多线程的基本技术,就线程的创建、线程控制和调度及线程同步等处理技术做了相关探讨.     

Java线程同步原理探析

Java多线程的概念是学习Java的难点,本文通过实例用通俗易懂的语言阐述线程同步的概念,分析同步机制的原理,并结合教学给出了一些体会。     

Java多线程机制的研究与实践

多线程编程是Java语言的一个重要特色，它使Java程序可同时进行多路运行，支持多任务并进行处理，可充分利用系统资源，提高程序的执行效率。本文在说明进程、线程的基本概念后，还介绍了线程的状态，多线程的调度原则，并详细讨论了实现多线程的两种途经：重载Thread类的run()方法和Rummble接口的run()方法，它们都具有相同的功能和作用。最后还介绍了多线程的分组管理方法。     

面向Java多线程机制的软件重构方法

针对Java语言中Thread和Executor两种线程机制在线程管理模式、代码编写量和性能上的不同,提出了一种面向Java多线程机制的软件自动重构方法,该方法可以实现Thread和Executor之间的自动重构转换,进而帮助程序员选择更适合的线程机制.在Eclipse JDT环境下实现了从Thread到Executor的自动重构工具Rethreader.在实验中,使用Rethreader对JGF基准测试程序套件中的Series、Crypt、Lufact、Sparsematmult和Montecarlo等基准程序进行了重构测试,实验结果表明,Rethreader可以在小于1 s的短时间内实现从Thread到Executor的转换.      

VC 语言多线程编程及其实现

提出从线程的创建、线程的调度、线程的优先级与线程的同步等几个方面的问题,较为全面详细地介绍了使用VC 语言进行多线程编程的实现方法。     

VC＋＋语言多线程编程及其实现

提出从线程的创建、线程的调度、线程的优先级与线程的同步等几个方面的问题．较为全面详细地介绍了使用VC＋＋语言进行多线程编程的实现方法。     

基于Java的多线程机制

以多线程机制为研究对象,以典型的多线程操作系统Solaris为例,论述了线程的模型,调度与同上不,并介绍了Java在语言级别对多线程的支持,为基于多线程应用程序的实现提供了基础。     

Windows环境下河网水流多线程并行计算

基于多任务Windows操作系统的线程和事件机制,利用Windows系统API函数创建多个线程,并对共享内存式的多个线程运行互斥与同步实行统一管理,从而实现了河网水流的多线程并行计算.测试结果表明,采用与CPU内核数相同的线程数进行并行计算,可以达到最佳的并行计算效果.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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