生态环境质量指标体系的建立与应用

在背景调研、生态环境评价及生态功能区划研究的基础上,应用生态发生学、生态结构学理论与方法系统剖析了各类生态功能区、自然保护区、特殊生态环境保护区的结构与服务功能;在深入理解生态安全内涵的条件下研究了指标体系框架,并以锦州市华北山地林业生态功能区为例探析了生态环境质量评价指标体系。同时研究了指标体系在生态环境评价及生态安全评估中的应用。     

Forecasting with latent structure time series models: an application to nominal interest rates

In this paper we develop a latent structure extension of a commonly used structural time series model and use the model as a basis for forecasting. Each unobserved regime has its own unique slope and variances to describe the process generating the data, and at any given time period the model predicts a priori which regime best characterizes the data. This is accomplished by using a multinomial logit model in which the primary explanatory variable is a measure of how consistent each regime has been with recent observations. The model is especially well suited to forecasting series which are subject to frequent and/or major shocks. An application to nominal interest rates shows that the behaviour of the three‐month US Treasury bill rate is adequately explained by three regimes. The forecasting accuracy is superior to that produced by a traditional single‐regime model and a standard ARIMA model with a conditionally heteroscedastic error. Copyright © 1999 John Wiley & Sons, Ltd.     

Modeling of combined Bayesian networks and cognitive framework for decision-making in C2

The command and control (C2) is a decision-making process based on human cognition, which contains operational, physical, and human characteristics, so it takes on uncertainty and complexity. As a decision support approach, Bayesian networks (BNs) provide a framework in which a decision is made by combining the experts’ knowledge and the specific data. In addition, an expert system represented by human cognitive framework is adopted to express the real-time decision-making process of the decision maker. The combination of the Bayesian decision support and human cognitive framework in the C2 of a specific application field is modeled and executed by colored Petri nets (CPNs), and the consequences of execution manifest such combination can perfectly present the decision-making process in C2.       

门户集成Struts应用的Portlet化模型研究

在最少改变编码的前提下,将现有运行良好的应用系统移植到门户中是门户集成所面临的首要问题. 针对门户构建中基于Struts框架的Web应用集成,分析了Struts框架和Portlet运行机制及二者的关联性,提出了一个Struts应用的Portlet化模型,并实现该模型. 实例证明遵循Struts标准的应用均可以利用该模型实现为Portlet,作为组件集成到门户中,从而有效地提高了现有系统的可重用性.     

Axure原型交互中内联框架解决视频引入的实践研究

Axure原型交互技术是解决网站及APP等产品开发过程中快速实现产品原型的必备工具,Axure原型交互技术几乎可以不用或少用代码即实现网站及APP等产品的功能展示,而Axure原型交互技术中视频引用的功能展示是个值得探讨的问题.因此,研究了从引用网络视频、引用本地视频、引用自己编写的demo.html文件完美解决Axu...     

基于.NET的分布式软件框架的研究与应用

针对甘肃省委组织部人力资源管理的现状,分析了基于.NET技术的分布式软件体系结构及实现机制,提出了可行的改造思路并设计了一个基于MS.NET的干部信息管理系统,并对该解决方案所采用的相关技术和功能模块进行了描述.该系统将使人才管理的效率大幅提高,并使干部信息管理工作更加规范化和科学化.     

Actor-Critic框架下的多智能体决策方法及其在兵棋上的应用

将人工智能应用于兵棋推演的智能战术兵棋正逐年发展,基于Actor-Critic框架的决策方法可以实现智能战术兵棋的战术行动动态决策.但若Critic网络只对单算子进行评价,多算子之间的网络没有协同,本方算子之间各自行动决策会不够智能.针对上述方法的不足,提出了一种基于强化学习并结合规则的多智能体决策方法,以提升兵棋推演...     

基于Web Service的多层分布式体系结构

文章讨论了客户机/服务器(C/S)结构和浏览器/服务器(B/S)结构的发展,以及这两种结构在大型系统中应用受限的现状。为了解决大型系统中跨平台交互问题,引入WebService技术,介绍了WebService的架构和特点,提出了基于WebService的多层分布式体系结构,并以实例分析了这种结构的工作原理。     

沸石咪唑框架纳米复合颗粒对菌膜的清除研究

近年来,新型纳米抗菌材料因其特殊的理化性质和作用机制,在抗菌膜方面展示了不容忽视的潜力.但是,如何提高这些抗菌剂穿透菌膜胞外聚合物基质（EPS）的能力,以达到低剂量、高疗效的目的,仍是一个挑战.为了解决这个难题,通过一锅法成功合成了一种带正电、靶向菌膜中胞外脱氧核糖核酸（eDNA）的沸石咪唑框架纳米复合颗粒（ZIF-8@D）.研究发现,ZIF-8@D能够迅速穿透菌膜,并在菌膜内部释放脱氧核糖核酸酶I(DNase I),DNase I能水解菌膜中的eDNA,以达到分散菌膜的目的 .这项研究不仅为设计高穿透性的抗菌膜材料提供了新思路,而且拓展了沸石咪唑框架结构在生物医学领域的应用.     

AJAX及AJAX．NET应用研究

文中首先介绍了AJAX技术的概念、特点以及适用范围,随后讨论了AJAX．NET框架及特点,最后举例说明AJAX．NET框架在Web应用程序中的具体使用方法。