结合结构下文及词汇信息的汉语句法分析方法

针对句法分析中上下文无关语法模型对句子信息利用的不足,通过融入结构下文和部分词汇信息,提出两种基于概率上下文无关语法模型的短语结构消歧方法,以达到消解结构歧义的目的;引入分层分析的算法,通过损失一定的时间效率使得在提高分析准确率的同时保证分析结果的全面性。实验结果表明,融入结构下文及词汇信息的汉语句法分析方法,利用了更多的句子信息,与上下文无关语法相比有着更强的消歧能力。     

工业以太网在五矿营口中板厂1、2号高炉新建项目中的应用

魏德米勒管理型工业以太网交换机IES21系列专为工业恶劣环境所设计,具有可靠的冗余功能,成为工业控制网络中通信设备的理想选择。在五矿营口中板厂1、2号高炉新建项目高炉控制子系统中,PLC设备连在环形以太网上,既相互独立又数据共享,实现了整个高炉系统的数据采集、逻辑控制及电气传动自动化。     

高可管理性道岔融雪远动控制网络

为增强铁路道岔融雪系统的灵活性和可管理性,进行可控的远动中心分段监控,提出在远动控制网络上应用虚拟路由传输精简版(VRF-Lite)对网络路由信息分组,实现系统分段.在简易网络环境中进行了基于VRF-Lite的远动控制网络组网实验.实验结果证实,通过在路由器上进行软件配置,网络通信实现分组,分组结构灵活易控.由此得出,应用VRF-Lite技术不仅可使远动控制网络保持对融雪系统通信的支持,而且有效提升系统可管理性.该技术可作为融雪系统项目实施和系统优化的备选方案.     

一种查找形式背景箭头关系的快速算法

在形式概念分析中,"箭头关系"对简化形式背景、识别兼容子背景等起着至关重要的作用,因此如何快速确定一个给定形式背景的对象与属性间的箭头关系是一个值得探讨的问题。首先针对形式背景给出对象与属性间的箭头关系的等价判定定理,在此基础上提出一个查找形式背景的箭头关系的快速算法,并通过实例与数值实验证实了该算法的可行性与有效性。     

低速直驱开关磁阻风力发电系统模拟装置研究与实现

分析开关磁阻电机的发电原理及其非线性模型,在MATLAB仿真平台上构建开关磁阻风力发电系统相应的仿真研究模型,设计一套基于DSP的低速直驱开关磁阻风力发电系统,实现低速直驱风力发电。实验和测试结果证明设计方案正确,系统运行可靠。     

催化重整装置紧急停车系统

介绍固定床半再生催化重整装置紧急停车系统的组成、原理及工作过程，给出调试和维护要点。     

Experimental investigation on the detachable thermosiphon for conduction-cooled superconducting magnets

A detachable thermosiphon, as a transient thermal switch for conduction-cooled superconducting magnet, is designed, fabricated and tested. A thermosiphon between the first and second stages of a cryocooler can reduce the cool-down time of a conduction-cooled superconducting magnet by using the large cooling capacity of the first stage. The thermosiphon is a very efficient heat transfer device until all the working fluid in it freezes (off-state). After the working fluid freezes and the second stage temperature becomes lower than that of the first stage, however, the thermosiphon then becomes a conduction heat leak path between two stages of the cryocooler. Considering a very small cooling capacity of the second stage of the cryocooler around 4.2 K, the conduction heat loss is not negligible. Therefore, a detachable thermosiphon, made of a metal bellows, is considered to be able to eliminate such a conduction heat leak. The mock-up magnet is cooled down with the thermosiphon and the thermodynamic states of the thermosiphon and the mock-up magnet are precisely examined during the whole cool-down process. At off-state, the thermosiphon is detached mechanically from the magnet. In this way, the conduction heat leak path through the thermosiphon wall is completely eliminated. This paper describes the detailed transient operation of the detachable thermosiphon using nitrogen as the working fluid.     

语言在网络语境中的变异

本文从词形变异、语义变异、语法变异三个方面分析了语言在网络语境中的变异及变异的原因,并指出,网络语言的变异已辐射到网络之外的语境中。作者还就如何看待网络语言的变异提出了一些看法。     

路灯监控终端开关灯控制转换原理

通过分析QHO电路原理，来阐述路灯监控终端进行开关控制转换的原理。     

When does generation enhance memory for location?

Generation is thought to enhance both item-specific and relational processing of generated targets as compared with read words (M. A. McDaniel & P. J. Waddill, 1990). Generation facilitates encoding of the cue-target relation and sometimes boosts encoding of relations across list items. Of interest is whether generation can also increase the encoding of target-location associations. Because the literature on this point is mixed, 3 procedural differences between 2 studies (E. J. Marsh, G. Edelman, & G. H. Bower, 2001; N. W. Mulligan, 2004) were identified and manipulated. A positive generation effect was found for location memory, but this effect was reduced when subjects wrote down the study words and when the filler task involved generation. Generation can enhance location memory in addition to item memory but only if the experimental parameters do not interfere with the processing benefits of generation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)