A floating-point residue arithmetic unit

A floating-point arithmetic unit (FPAU), based on the residue number system, is reported which can perform addition, subtraction and multiplication. As a result, several classic problems associated with RNS based digital filters such as: overflow detection, sign detection and non-integer filter coefficients are overcome by virtue of thefloating-point representation of rational numbers over a large dynamic range. The FPAU has potential applications in computing, digital filtering, and implementing high speed, high precision Fast Fourier Transform (FFT) and Winograd Fourier Transform (WFTA). It will be shown that by using parallel small word-length architectures (viz. microprocessors), a high speed FPAU can be realized.     

A link-based collection fusion strategy

This paper presents a method for solving the collection fusion problem in hypermedia digital libraries. The proposition which is explored and evaluated is that across document links between hypermedia documents residing in distributed hypermedia collections can supply sufficient useful information to allow effective collection fusion. In contrast to other collection fusion strategies, the link-based fusion strategy does not require a learning phase before it can be utilised and, also does not use any information from remote collections other than the returned list of documents. Because of these characteristics the proposed fusion strategy is suitable for very large and extremely dynamic environments in which other collection fusion strategies (e.g. learning collection fusion strategies) may be inapplicable. Evaluation of the link-based fusion strategy demonstrates that the proposed strategy is more effective and efficient than the uniform strategy which can be applied under the same conditions.     

基于二叉树的算术表达式计算与实现

算术表达式、栈的操作、二叉树的遍历这几个概念是数据结构教学中的基本内容。算术表达式求值是程序设计语言编译中的一个最基本问题,也是栈应用的一个典型例子。在数据结构中没有解决表达式与二叉树之间的相互转换关系。本文旨在研究表达式向二叉树的转换,即扫描输入的算术表达式,生成表达式的二叉树,再以先序遍历此二叉树求取表达式的值。为由一种算术表达式得出后缀、前缀两种表达式提供了一种新思路;同时以更简便的方式实现了算术表达式、二叉树这两者之间的转换。     

一种基于射频IC卡的检票系统的研究与实现

本文主要介绍了一种基于射频IC卡的检票系统的设计及实现的关键技术,利用可视化编程语言VB与SOL Server 数据库等相关技术,实现计算机与读卡器之间的通信.最终完成票夯数据的处理.     

税收征收管理中的博弈分析

应用博弈论的分析方法，在强调个人理性和集体理性矛盾的基础上研究了税收征收管理中的问题。建立相应的定量分析模型，分析了某些关键因素对参与人均衡行为的,基于分析结果，给出降低逃税现象，发生可能性的若干建议。     

基于训练序列的OFDM符号同步算法研究

OFDM系统的接收端对同步精度有着很高的要求,同步误差会导致系统性能的急剧下降.本文对基于训练序列的三种同步进行了仿真分析,并引入错误概率,在不同信噪比下分析各个算法的同步精度,对符号同步的深入研究有参考价值.     

A fluid collection system for dermal wounds in clinical investigations

In this work, we demonstrate the use of a thin, self adherent, and clinically durable patch device that can collect fluid from a wound site for analysis. This device is manufactured from laminated silicone layers using a novel all-silicone double-molding process. In vitro studies for flow and delivery were followed by a clinical demonstration for exudate collection efficiency from a clinically presented partial thickness burn. The demonstrated utility of this device lends itself for use as a research implement used to clinically sample wound exudate for analysis. This device can serve as a platform for future integration of wearable technology into wound monitoring and care. The demonstrated fabrication method can be used for devices requiring thin membrane construction.     

Ownership matters: Intellectual Property, privatization and innovation

This paper discusses a conflict between private defence firms and government procurement agencies related to Intellectual Property management issues that emerged during the privatization process of the main UK defence research establishment. Our analysis questions a common argument found in studies of the defence industries: that a close confluence of interests exists between private suppliers and their public customers, so much so that the boundaries between public and private actors become blurred. Instead, we argue that the tensions between private suppliers and their government customers are jeopardizing the success of process innovations in defence procurement that rely on “partnership” and collaboration between defence and government customers and users.     

围绕学校办学特色 努力打造图书馆馆藏特色

本文围绕大理学院办学特色、学科专业及办学定位,就学校图书馆如何打造馆藏特色进行论述。     

Content still matters. A machine learning model for predicting news longevity from textual and context features

There is an ongoing debate about what is more important in the modern online media newsroom, whether it is the news content and worthiness, or the audience clicks. Using a dataset of over one million articles from five countries (Belarus, Kazakhstan, Poland, Russia, and Ukraine) and a novel machine learning methodology, I demonstrate that the content of news articles has a significant impact on their lifespan. My findings show that articles with positive sentiment tend to be displayed longer, and that high fear emotion scores can extend the lifespan of news articles in autocratic regimes, and the impact is substantial in magnitude. This paper proposes four new methods for improving information management methodology: a flexible version of Latent Dirichlet Allocation (LDA), a technique for performing relative sentiment analysis, a method for determining semantic similarity between a news article and a newspaper's dominant narrative, and a novel approach to unsupervised model validation based on inter-feature consistency.     

公共突发事件应急统计中信息快速收集方法和机制研究

公共突发事件下,应急统计工作的首要环节就是对于事件信息的收集,快速、有效地收集到相关信息才能给应急管理部门决策提供依据,最大限度地降低损失。详细讨论了公共突发事件应急统计信息收集的内容、特点及其收集方法,并针对自然灾害,提出了基于应急统计信息收集中心的信息快速收集机制;针对突发公共卫生事件,提出了基于网络直报的信息快速收集机制,为改进应急统计信息收集工作提供了依据。