In addition to the advantages of rapid response, small displaced volume, and high spatial resolution that are common to all nanoscale optical devices, luminescence-based nanosensors can also leverage the intrinsic environmental sensitivity of fluorophores/phosphors and the phenomenon of energy transfer. Their compatibility with standard microscopes and other imaging devices makes them even more attractive for biological and biomedical applications. The reduction in size does, however, also involve some loss of performance, particularly in longevity. In this chapter, the fundamental properties and basic scaling laws of nanoscale fluorescence-based sensors will be discussed, followed by a review of examples of nanosensors and an outlook of the future of these promising devices.

关键词：纳米光学器件；生物医学；纳米传感器；荧光/磷光体

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报告包括2014年7月下半月通信行业的国际要闻、国内要闻、区域要闻以及国际国内企业要闻综述。

关键词：通信；行业要闻

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2014年2季度，国家继续出台系列措施，规范和促进通信行业发展：为了促进电信行业改革，推进国家税收制度改革步伐，财政部、国家税务总局于2014年4月30日联合发布《关于将电信业纳入营业税改征增值税试点的通知》；为了充分发挥市场定价机制作用，提升通信行业市场竞争活力，工业和信息化部、国家发展改革委于2014年5月9日联合发布了《关于电信业务资费实行市场调节价的通告》；为了充分利用频谱资源，平衡4G发展格局，实现TD-LTE和LTE FDD融合发展，2014年6月27日，工业和信息化部根据中国电信集团公司和中国联合网络通信集团有限公司申请，批准两家企业分别在16个城市开展LTE混合组网试验。

关键词：通信行业；政策环境

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2014年1-6月，全国电信业务总量累计完成8619.0亿元，同比增长15.1%，比1-5月下降0.3个百分点；电信主营业务收入累计完成5957.3亿元，同比增长5.6%，比1-5月下降1.3个百分点，再次延续同比增速持续回落的趋势（5月份受双节日假期影响，主营业务收入增速回升）。

关键词：通信行业；运行分析

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Sensing based on carbon nanotube (CNT) materials has been as area of interest since the material's discovery by Iijima in 1991 (Nature 1991, 354, 56:58), and an active area of research once CNT availability began to increase via the innovations of Smalley and others (Chem Phys Lett 1995, 243, 49:54). The work presented in this report was conducted at Rice University under contract W911NF-11-1-0249. Here, it is shown that the use of high weight percentage CNT medium density polyethylene (MDPE) composites has suitability towards the sensing of nerve agent stimulants such as dimethyl methylphosphonate (DMMP). The results indicate a possible binary composite approach to sensing, using two variants of CNT. As this work progresses, optimization of the CNT towards sensing DMMP through functionalization is suggested, as is improvement to the experimental apparatus to add functionality, such as controlled and active flow, at a fixed temperature relevant to the application.

关键词：碳纳米管;神经毒气;聚乙烯;检测;灵敏度;纳米材料

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Air traffic controllers are responsible for directing air traffic based upon decisions made from traffic activity depicted on 2Dimensional (2D) radar displays. Controllers must identify aircraft and detect potential conflicts while simultaneously developing and executing plans of action to ensure safe separation is maintained. With a nearly 100% increase in traffic expected within the next decade (FAA, 2012a), controllers’ abilities to rapidly interpret spacing and maintain awareness for longer durations with increased workload will become increasingly imperative to safety.

关键词：控制器；立体；3D显示效果；数字雷达；空中交通控制器

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This report summarizes the results of Phase I (Design Concept) of an RDC effort to develop a readily deployable system for the in-situ detection, identification, and characterization of submerged oil in the water column. The first phase of the project involves development and testing of three technological approaches to the detection problem. A system developed by NORBIT US Ltd. addresses the detection of hydrocarbons using the backscatter from acoustic signals from a Wide Band Multi-Beam Sonar (WBMS). A system developed by WET Labs, named the Fluorescent IN-situ Detection System for OIL (FINDS OIL), uses flow-through fluorometric measurements and fluorescent backscatter to identify and characterize petroleum hydrocarbons encountered by the instrument. A third system, also by Wet Labs, named Wide-angle-scattering Inversion to Detect Oil in Water (WINDOW), uses the scattering and refraction of light to determine the mass and volume concentration, droplet size and density of the entrained oil. The systems are described in terms of the basic technology, ability to detect and characterize oil, areal coverage, ease of data processing and display, ruggedness and deployability, as well as the challenges involved in preparing the system for Prototype Development and Testing. This report will be used to make a decision on whether to move forward with prototype development for each system.

关键词：声学检测;反向散射;碳氢化合物;识别;石油泄漏

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This paper presents the optimal performance of Load Frequency control (LFC) in interconnected two-area power systems. Proportional-Integral (PI) controllers are commonly used for LFC systems in power industry. But the dynamic behaviors in the presence of variations in load changes with different operating conditions are needed to be improved. This paper proposes Particle Swarm Optimization (PSO) based Load Frequency Control for improving the dynamic performance of the system. A two area interconnected power system, having different generating units is considered to be equipped with Proportional Integral and Derivative (PID) controller. PSO algorithm is implemented to search the optimal controller parameters by minimizing the time domain objective function. The performance of the proposed PID controller has been evaluated by the performance of the conventional controller and the controller tuned by Genetic algorithm (GA) in order to demonstrate the superior efficiency of the proposed PSO algorithm. Simulation results proved that the proposed algorithm is moderately fast algorithm and yields true optimal gains with minimum overshoot, minimum undershoot, minimum rise time and minimum settling time for any power system. Furthermore, the dynamic behavior of the proposed controller under variations of system parameters and load changes are better than that of conventional and GA controllers.

关键词：控制器；两区域；互联电力系统；智能优化；控制器；粒子群

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The principle of full vibration signal acquisition system is introduced.This article through the use of PSD high resolution,the characteristics of the corresponding speed,put it to use in vibration measurement,and introduces the realization method,Including the front optical,electrical and late signal processing,And through the concrete experimental data,and verifies the feasibility of the scheme.

关键词：完整的PSD位置传感器;模拟电路;电流和电压转换电路;前置放大器电路,A / D转换

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In this report, we report the investigation of energy harvesting with coupled resonators while using magnetostrictive material called Galfenol. Galfenol is an alloy iron with an approximate concentration of iron and gallium as 83 and 17, respectively. Here, we describe a coupled system of mesoscale (1- to 10-cm) cantilever beams. The coupled system can be used for harvesting vibration energy to power and aid the performance of low-power wireless sensor nodes. The report is organized as follows. First we introduce the model of the transducer with Galfenol as the magnetostrictive material. Here, we discuss the model parameters derived from the experiment and show the simulations of a single beam. This is followed by the design of the power converters that are best suited for this device. Next, we analyze an all-to-all coupled system. Finally, we draw conclusions and describe the future course of the research.

关键词：能源收获;磁致伸缩;谐振器;悬臂梁;传感器;振动

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