The overarching goal of this project was to instrument the new MnDOT Navistar truck used at MN Road. A rugged data acquisition, data recording and wireless transmission system was established for collection of various sensor signals from the truck. The truck was instrumented with a suite of 20 accelerometers, with these accelerometers being located both on the five axles of the truck and on the tractor and trailer bodies. In addition, the truck was instrumented with a differential GPS system and an inertial measurement unit in the tractor cab. A cRIO-based data acquisition system, a rugged laptop and Labview software together serve as a flexible platform for data acquisition. A wireless communication system has been established to communicate trigger signals to roadside cabinets when the truck is at desired GPS locations on the road. Data recording by in-pavement sensors is triggered by this system. Software has also been set up for automatic downloading of data from the truck to a server on the network at MN Road. The experimental performance of the developed system has been verified by multiple tests conducted by the research team. The above instrumentation of the truck will enable data collection on truck vibrations, enable analysis of correlations between truck vibrations and variations in signals of weigh-in-motion sensors, and enable recording of truck movements and pavement loads at MnROAD.

关键词：无线通信；称重；运动传感器；数据采集

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This paper presents the results of an investigation of a proposed concept for closely spaced parallel runways called the Simplified Aircraft-based Paired Approach (SAPA). This procedure depends upon a new alerting algorithm called the Adjacent Landing Alerting System (ALAS). This study used both low fidelity and high fidelity simulations to validate the SAPA procedure and test the performance of the new alerting algorithm. The low fidelity simulation enabled a determination of minimum approach distance for the worst case over millions of scenarios. The high fidelity simulation enabled an accurate determination of timings and minimum approach distance in the presence of realistic trajectories, communication latencies, and total system error for 108 test cases. The SAPA procedure and the ALAS alerting algorithm were applied to the 750-ft parallel spacing (e.g., SFO 28L/28R) approach problem. With the SAPA procedure as defined in this paper, this study concludes that a 750-ft application does not appear to be feasible, but preliminary results for 1000-ft parallel runways look promising.

关键词：算法;着陆辅助设备;预警系统;通信

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Since the 1960s, the National Highway Traffic Safety Administration (NHTSA) has worked with Federal, State, tribal and local partners to provide tools and resources for improving EMS systems. These partnerships have resulted in a range of products and services including guidance for improving the education of EMS personnel, improved data systems such as the National EMS Information System (NEMSIS) to measure and improve EMS performance, technical support for the development of 9-1-1 systems, and many others.

关键词：急医疗服务；通讯系统；教育；信息系统；电话系统

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This paper explores the computation and communication overlap capabilities enabled by the new CORE-Direct hardware capabilities introduced in the InfiniBand (IB) Host Channel Adapter (HCA) ConnectX-2. These capabilities enable the progression and completi

关键词：计算;计算机通讯;算法;障碍;电脑硬件

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Direct connection and reflective connection are commonly used in traditional Trojan's communication model,which have some significant deficiencies in hiding,anti-tracking,and efficiency.To improve the aspects above in traditional Trojan horse communication model,the author proposed a hybrid communication model based on P2P technology.The model uses P2P intranet penetration protocol to build the channel between the controlled station and the control station,and uses P2P node servers for saving the Trojan's status and transferring some data between the controlled and the control.The topology of networks for controller will be very flexible.Using the IP traceback technology will be difficult to track the controllers.Using UDP protocol in the hybrid communication model for data transmission will hide the network status.Control sites can work in distributed mode.By using the model,the hiding-ability,anti-traceability and communication efficiency will be greatly improved.

关键词：木马；通信模型；P2P；UDP穿透；内联网外显

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We examine the communication time series of a fully-networked Army coalition command and control organization. The communications and scenario- event data described in this paper were collected at a two-week U.S. Army simulation-based training event. The Mission Command Battle Laboratory at Fort Leavenworth, Kansas, conducted a joint experiment/training exercise focused on the operations of the mission command staff composed of a U.S. Division headquarters (n=51) and subordinate U.K. Brigade headquarters (n=28). The network architecture and digitized nature of the event allowed examination of staff communications in a distributed, network-enabled coalition environment. The participants were active duty Soldiers and officers, organic to their military unit. We used time series analysis to predict the communications record based on an external work variable of the number of important scenario events occurring across time. After taking into account structural features of the time series, we examined the remaining variability in email and phone communications. We found that the exercise scenario events were not a significant predictor of the Divisional communications, which were best fit by an auto-regressive model of order 1. The occurrence of scenario events, however, did predict the Brigade communications time series, which were well fit by a lag dependent variable model. These results demonstrate that Brigade communications responded to and could be predicted by battlefield events, whereas the Division communications were only predicted by their own past values. These results highlight the importance of modeling environmental work events to predict organizational communication time series and suggest that network communications are perhaps increasingly dependent upon battlefield events for lower echelons of command closer to the tactical edge.

关键词：指挥和控制系统；通信网络；联合军事活动；时间序列分析

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Traditional approaches to networking and security operate with static metrics and a black-and-white approach to decision-making. With the advent of network-centric environments and the emerging consideration of the impact of social networks on communications networks, we are forced to better understand how these additional factors can be used to improve networking services without assuming an unacceptable amount of risk. In this paper, we consider the implementation of trust metrics into various network protocols and security services. Our trust metric considers the impact of parameters of communication, information, and social networks. Using these parameters, we have developed composite trust metrics and applied them to the decision-making process within these protocols to replace the traditional approaches. The goal is to allow these trust-based protocols to operate in the gray area to improve performance and the range of operating conditions. We have studied tradeoffs between performance and security and trust and risk to identify optimal operating conditions of networks to maximize performance in several networking applications.

关键词：指挥和控制系统；通信网络；通信协议；计算机网络安全

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The Enhanced Cybersecurity Services (ECS) is a voluntary program based on the sharing of indicators of malicious cyber activity between Department of Homeland Security (DHS) and participating Commercial Service Providers. The purpose of the program is to assist the owners and operators of critical infrastructure to enhance the protection of their systems from unauthorized access, exploitation, or data exfiltration through a voluntary information sharing program. ECS consists of the operational processes and security oversight required to share unclassified and classified cyber threat indicators with companies that provide internet, network, and communication services to enable those companies to enhance their services to protect U.S. Critical Infrastructure entities. ECS is intended to support U.S. Critical Infrastructure, however, pending deployment of EINSTEIN intrusion prevention capabilities, ECS may also be used to provide equivalent protection to participating Federal civilian Executive Branch agencies. The National Protection and Programs Directorate (NPPD) is conducting this Privacy Impact Assessment (PIA) because personally identifiable information (PII) may be collected. This PIA consolidates and serves as a replacement to the DHS/NPPD/PIA-021 National Cyber Security Division Joint Cybersecurity Services Pilot PIA, published on January 13, 2012, and the DHS/NPPD/PIA-021(a) National Cyber Security Division Joint Cybersecurity Services Program (JCSP), Defense Industrial Base (DIB) Enhanced Cybersecurity Services (DECS) PIA Update, published on July 18, 2012.

关键词：电脑安全；隐私保护；计算机网络；通讯；信息安全

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Coordination with utility owners during the project development and delivery process involves multiple activities, such as requesting and collecting data about the location and characteristics of existing facilities to identifying and analyzing utility conflicts, coordinating with utility stakeholders for the resolution of those utility conflicts, preparing and executing utility agreements, coordinating and inspecting utility adjustments, and coordinating reimbursements and audits. Effective communication, cooperation, and coordination among utility stakeholders are critical to keeping transportation projects on schedule. Unfortunately, these elements are frequently lacking during project development and delivery to allow for the adoption of cost-effective solution strategies. This report documents the results of research completed to develop strategies to improve the participation and response of utility owners in the project development and delivery process. To achieve this objective, the researchers (1) reviewed strategies that the Texas Department of Transportation (TxDOT) and other agencies use to engage utility owners, (2) developed a set of strategies designed to optimize utility owner participation, (3) conducted stakeholder meetings and workshops to gauge the potential acceptability of these strategies, and (4) developed recommendations for changes to business processes and procedures. The four sets of strategies are: (1) modernization of the utility process, (2) utility conflict matrix approach, (3) streamlining and standardization of utility cost data submissions, and (4) core skill training on utility topics.

关键词：公用事业；权的方式（陆运）；冲突管理；交通运输系统

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This 2013 Measuring Broadband America February Report contains the most recent results from the Federal Communication Commissions (FCC) Measuring Broadband America program. This program, whose first results were published in August 2011, is an ongoing, rigorous, nationwide study of residential broadband performance in the United States. This study, like those conducted before, involves actual performance tests for thousands of subscribers of Internet Service Providers (ISPs) serving well over 80 percent of the residential market. Our initial Measuring Broadband America Report presented the first broad-scale study of actual consumer broadband performance throughout the United States. This effort was followed approximately a year later by a second report, released in July 2012, and now the present report. As explained in the accompanying Technical Appendix, each report in this series is based on measurements taken during a single reference month that has been chosen to represent a typical usage period for the average consumer. The reference month for the first report was March 2011, and the collection period for the second report, initially set for March 2011, was shifted to April 2012 to ensure collection of a sufficient amount of valid data. The reference month for this report is September 2012, five months after the previous testing period. As such, we present this as a supplemental report, noting that substantive network change is best measured in years, not months. Going forward, we plan to repeat testing each year in the month of September, and transition to annual reporting. In this report, we are pleased to include results on satellite technology for the first time, based on test results collected from ViaSat, a major satellite services provider. While in the past we have collected and released raw data on satellite performance, we have not reported on test results from this technology, as we recognized that the industry was on the verge of a major transition. In 2011, the satellite industry began launching a new generation of satellites offering performance as much as 100 times superior to the previous generation, leading to the entry of new satellite-based broadband providers. Consequently, we are now able to include comparisons between satellite and wireline technologies in this report.

关键词：电信；宽带；通信；互联网服务提供商（ISP）

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