近年来，物联网技术在医疗、交通等方面的应用逐步增多，可穿戴设备更是引起广泛关注，物联网向人们提供了一幅美好的画面，并表现出强劲的市场发展前景。但与此同时，物联网技术在信息安全方面存在的各种隐患也逐步暴露出来，如用户关键信息泄露、私人设备遭非法操控等，甚至有黑客提供了通过入侵医疗设备杀人的方法，这又为物联网的发展蒙上一层阴影。本文重点分析物联网存在的信息安全风险，以及我国物联网信息安全中存在的问题，并提出了相应的对策建议。

关键词：物联网；信息安全；智能电网；RFID

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关键词：生物传感器；无线网络；可靠性网络

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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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报告包括易观发现&易观建议、网络视频市场发展宏观环境分析、网络视频市场产业链及商业模式、网络视频市场发展现状、网络视频市场产业热点分析、网络视频市场发展趋势分析、网络视频市场重点厂商分析。

关键词：网络视频；市场发展；产业链；厂商

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A railway management system is an automatic system that is used in the railways to improve efficiency. Earlier, manual systems were used in railways; this made it difficult to exchange information from the train to the ground, causing a delay in displaying information for passengers. In this era of hyper-urbanization, people want a faster and more convenient mode of transportation. Therefore, the rapid economic and demographic growth across the world is driving the growth of the Global Railway Management System market. In addition, technological advancement is another factor that is propelling the growth of railway infrastructures. Since the Railway industry is one of the major contributors to the economic growth of a country, there is an inherent need for an efficient management system. In this regard, advanced technology will help the railways to upgrade their management and operational systems.

关键词：铁路管理系统；提高；自动化系统；效率；手动系统

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Genetic Algorithm (GA) has been used in this chapter for a new approach of sub-optimal model reduction in the Nyquist plane and optimal time domain tuning of PID and fractional order (FO) PI~λD~μ controllers. Simulation studies show that the Nyquist based new model reduction technique outperforms the conventional H_2 norm based reduced parameter modeling technique. With the tuned controller parameters and reduced order model parameter data-set, optimum tuning rules have been developed with a test-bench of higher order processes via Genetic Programming (GP). The GP performs a symbolic regression on the reduced process parameters to evolve a tuning rule which provides the best analytical expression to map the data. The tuning rules are developed for a minimum time domain integral performance index described by weighted sum of error index and controller effort. From the reported Pareto optimal front of GP based optimal rule extraction technique a trade-off can be made between the complexity of the tuning formulae and the control performance. The efficacy of the single-gene and multi-gene GP based tuning rules has been compared with original GA based control performance for the PID and PI~λD~μ controllers, handling four different class of representative higher order processes. These rules are very useful for process control engineers as they inherit the power of the GA based tuning methodology, but can be easily calculated without the requirement for running the computationally intensive GA every time. Three dimensional plots of the required variation in PID/FOPID controller parameters with reduced process parameters have been shown as a guideline for the operator. Parametric robustness of the reported GP based tuning rules has also been shown with credible simulation examples.

关键词：控制器；模型降阶；进化算法；规则提取

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The VA Office of Inspector General Office of Healthcare Inspections conducted a review at the request of Congressman Jo Bonner to assess allegations concerning a patient's quality of care as well as address problems with services at the VA Gulf Coast Veterans Health Care System (facility), in Biloxi, MS. The complainant alleged that: (1) Emergency department (ED) physicians did not perform a complete medical evaluation during three of four visits. (2) A Mobile Community Based Outpatient Clinic (Mobile CBOC) primary care provider (PCP) did not assess the patient's chronic back pain. (3) A Mobile CBOC PCP did not return family members' telephone calls. (4) Telephone service at the Mobile CBOC was problematic. (5) Durable medical equipment (DME) was not delivered timely. (6) Payment was (erroneously) denied for a non-VA hospital stay. (7) Facility staff had difficulty coordinating the patient's discharge plans. We substantiated that during one of four ED visits, the March 2012 visit, the patient's overall medical evaluation did not meet VHA standards. Although not one of the complainant's allegations, we found the facility did not conduct a peer review of the ED physician's care. We substantiated the allegation that telephone service at the Mobile CBOC was problematic. We substantiated the allegation that payment for a non-VA hospital stay was originally denied; however, during the course of this review, was revisited by the facility and the Veterans Integrated Service Network 16 staff, and a decision was made to pay the non-VA hospital stay. We did not substantiate the allegation that a PCP did not address the patient's chronic back pain at the Mobile CBOC. We did not substantiate the allegation that the patient did not receive timely delivery of the DME. In fact, the facility policy requires patients to pick up their DME, and the patient was timely notified that the DME was available for pick-up. We also did not substantiate the allegation that facility staff had difficulty coordinating the patient's discharge plans. Due to insufficient documentation, we could neither confirm nor refute the allegation that the Mobile CBOC PCP received any telephone calls from the patient's family members during the months of January, February, or March 2012. We recommended that the facility Director ensure that a quality of care review is conducted with specific attention to the deficiencies identified in this report. We also recommended that the facility Director strengthen processes to address patient complaints regarding the automated telephone system at the Mobile CBOC.

关键词：护理质量;检验;医疗保健;医疗设备

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The primary objectives of the wireless sensor network routing protocol design are balancing network energy consumption and extending the entire network lifetime.This paper analyses the effectiveness of LEACH protocol in cluster-head selection,and proposes an improved clustering algorithm.This new algorithm takes node's residual energy and location information into account,optimizes the selection method of the threshold for electing cluster-head,improves optimal cluster-head selection strategy that is normal nodes select the optimal cluster-head based on the cost function.Simulation results show that the improved protocol is better than LEACH in balancing node energy consumption,improving the efficiency of data transmission and prolonging the network life.

关键词：传感器网络;能源平衡;网络生命周期;LEACH

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A non-magnetic temperature controlling system used in atomic magnetometer with flowing hot air has been designed and realized.To measure the temperature in the oven without any additional magnetic noise,a fiber Bragg grating was used as a non-magnetic temperature measuring sensor with a high relative accuracy.Analysis has showed the temperature fluctuation can be controlled less than O.1 ℃.

关键词：原子密度;非磁性加热;非磁性测量,热空气流动

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This paper introduces the design and realization of the Multi-function Tower Crane Black Box,completes the main hardware module design and type selection.With ZigBee,it constructing wireless sensor network to collect the communication among nodes and the communication between nodes and the gateway,the lower PC adopts the IAR to complete the chip CC2430 programming.The application development tool for the upper PC is C51RF-WSN-DA300,and it gives part of the source code.The system parameters acquisition is accurate,the operation is stable,and the actual application effect is good.

关键词：无线个域网；无线通信；应用程序开发

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