基于MHP的数字电视交互界面的设计与实现

简要介绍交互数字电视中间件标准MHP的基本原理以及数字电视交互界面的分层模型，详细讲述如何基于XletView模拟器进行数字电视交互界面的设计与实现。     

基于中间件技术的HTML业务系统设计与实现

介绍了欧洲的MHP标准，并在HTML技术方面提出了改进方案。在此方案的基础上设计了一个基于HTML的从前端数据封装到终端数据接收的完整业务系统，并对其应用前景提出了一些看法。     

数据广播传输协议与MHP

分析了数据广播传输协议数据轮播与对象轮播技术的差异,以及与MHP中间件之间的关系,提出了选择传输协议和实现的建议。     

现阶段中间件平台分析

探讨国内外数字电视中间件的发展概况,阐明在数字电视整体转换的情况下,选择中间件产品需要考虑的几个问题,介绍苏州广播电视总台选择中间件产品的主要思路。     

创新型保护器件实现对PCB和电池的有效防护

泰科电子(Tyco Electronics)近日推出两款分别针对PCB和锂离子电池的保护产品:可回流焊热保护(Reflowable Thermal Protection,RTP)器件和金属混合聚合物正系数温度电阻(Metal Hybrid PPTC,MHP)技术。     

互动数字电视（GEM篇）中间件标准解读（3）

本文专门介绍由DVB标准化组织制订的GEM标准,内容包括GEM的由来和特点、标准的体系架构和组成部分、市场推广和应用情况以及标准未来的发展趋势等。     

Stable structures of oxocarbons and pseudooxocarbons of group VI

Density functional theory has been used to study the geometries, electronic structure and harmonic vibrational frequencies of the oxocarbons and the pseudooxocarbons of group VI. The ability of the maximum hardness principle for predicting the stable structures of oxocarbons and pseudooxocarbons of group VI is tested by analyzing the results of these calculations. To obtain the stable structure, the geometrical parameters and stability of molecules are compared and analyzed. Bond orders of candidate molecules are calculated by using natural bond orbital analysis. Except selenium derivatives, atoms in molecule calculations prove being useful for studying the nature of carbon heteroatom bond. Chemical hardness is also reported. This study reveals that (1) DFT gives very similar geometries and energies to ab-initio methods and (2) the maximum hardness principle (MHP) is not verified for some of these structures. Data for C₆Se₆, which are new, are presented in this work.     

一种符合MHP的数字电视中间件事件管理模式的设计

介绍符合MHP规范的中间件事件管理模式的设计.从事件管理的功能需求出发,介绍事件管理的整体架构和流程,同时讨论了MHP为事件管理定义的org.dvb.event API及如何用Java语言实现.     

Basis set effects on the energy and hardness profiles of the hydrogen fluoride dimer

In earlier work, the present authors have shown that hardness profiles are less dependent on the level of calculation than energy profiles for potential energy surfaces (PESs) having pathological behaviors. At variance with energy profiles, hardness profiles always show the correct number of stationary points. This characteristic has been used to indicate the existence of spurious stationary points on the PESs. In the present work, we apply this methodology to the hydrogen fluoride dimer, a classical difficult case for the density functional theory methods.     

交互数字电视系统重要标准研究

对交互数字电视系统中的标准进行了研究与比较，并给出MHP系统的接收机软件框架，在此基础上得出国内厂商在交互业务实现上的一些建议和结论。