近年来，“带宽缩水”、“假宽带”等成为公众对 有线宽带的吐槽焦点，而对手机上网用户评价尚可，两类宽带接入业务的用户体验差异较大。研究发现，除实际带宽外，用户期望、使用场景、业务种类、计费模式，甚至舆论导向都会对用户体验产生影响。建议运营企业综合考虑各项因素，提升网络质量的同时，避免过度宣传承诺，科学管理用户预期，有效改善用户感知。

通过总结广东电信现有波分传输平台特别是40G系统在部署和维护实践过程中发现的问题，从业务增长和传输技术发展的角度，说明了广东电信波分网络应逐步停止40G网络建设并向100G网络演进的趋势，进而在100G网络的建设模式、网络技术应用、网络维护注意事项等方面提出了意见和建议。

通过图表分析了陕西通信业的总体情况、用户发展情况、业务使用情况、经济效益、ARPU值变化情况以及各市通信业发展比较情况。

分析大数据发展给传统安防行业、企业安防 带来的影响与机遇，探索将大数据技术与云计算、物联网等技术在安防领域的应用组合模式。最后，结合目前大数据在安防工程应用中出现的问题，思考其发展前景。

协同医疗是一项利国利民的民生工程，通过笔者在上海进行为期三年的实践，探讨了基于信息化平台的协同医疗服务体系建设。在经验方面，笔者认为协同医疗最优的技术建设模式是采用平行的信息系统建设模式、最优的商业模式是阶梯化的收费模式；在困难方面，笔者认为协同医疗最大的困难是医疗体制的问题，最佳的解决方案是创新服务模式、改变运营体制、抓好顶层设计、大力推进协同医疗落实。

本文阐述了国外宽带总体发展情况，分析了 国外监管机构在提升宽带用户感知方面所采取的主要措施，并以美国和新加坡为例，分析了其宽带用户感知现状。同时研究了国外运营商在宽带业务提供方面的主要做法，从而为国内运营商提高宽带服务质量，提升宽带用户感知水平提出几点建议。

HVAC control systems are required to efficiently manage HVAC equipment. They help in reducing energy consumption and enhance the performance of an HVAC unit. There are various types of HVAC control systems including sensors, field devices, floor-level controllers, and building-level controllers. These HVAC control systems are used in the Commercial and Residential sectors worldwide.

The project supported the Nuclear Regulatory Commission (NRC) in identifying and evaluating the regulatory implications concerning the control and protection systems proposed for use in the Department of Energy's (DOE) Next-Generation Nuclear Plant (NGNP). The NGNP, using modular high-temperature gas-cooled reactor (HTGR) technology, is to provide commercial industries with electricity and high-temperature process heat for industrial processes such as hydrogen production. Process heat temperatures range from 700 to 950 C, and for the upper range of these operation temperatures, the modular HTGR is sometimes referred to as the Very High Temperature Reactor or VHTR. Initial NGNP designs are for operation in the lower temperature range. The defining safety characteristic of the modular HTGR is that its primary defense against serious accidents is to be achieved through its inherent properties of the fuel and core. Because of its strong negative temperature coefficient of reactivity and the capability of the fuel to withstand high temperatures, fast-acting active safety systems or prompt operator actions should not be required to prevent significant fuel failure and fission product release. The plant is designed such that its inherent features should provide adequate protection despite operational errors or equipment failure. Figure 1 shows an example modular HTGR layout (prismatic core version), where its inlet coolant enters the reactor vessel at the bottom, traversing up the sides to the top plenum, down-flow through an annular core, and exiting from the lower plenum (hot duct).

The current scarcity of public charging infrastructure is one of the major barriers to mass household adoption of plug-in electric vehicles (PEVs). Although most PEV drivers can recharge their vehicles at home, the limited driving range of the vehicles restricts their usefulness for long-distance travel. In this paper, an agent-based information system is presented for identifying patterns in residential PEV ownership and driving activities to enable strategic deployment of new charging infrastructure. Driver agents consider their own driving activities within the simulated environment, in addition to the presence of charging stations and the vehicle ownership of others in their social network, when purchasing a new vehicle. Aside from conventional vehicles, drivers may select among multiple electric alternatives, including two PEV options. The Chicagoland area is used as a case study to demonstrate the different deployment scenarios are analyzed.