This document describes the process in which people receive and process information in order to take action during emergencies. Then, the document presents guidance on how to create and disseminate emergency information in the face of rapid-onset disasters providing guidance on the dissemination of alert signals, the creation of the warning message, the formatting of messages for both visual and audible means, and the dissemination of the warning message. The document ends with a discussion of research questions still left unanswered, and future efforts necessary to complete a comprehensive document on emergency message creation and dissemination for building disasters.

关键词：通信和无线电系统；建筑；报警系统；预警系统

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Mg-Ti alloys are attractive for structural applications because of low density and improved corrosion resistance by selective oxidation including hydrogen storage and switchable mirror applications. Titanium has a melting point (1670℃) that greatly exceeds the boiling point of magnesium (1090℃) and therefore, alloying of Mg and Ti by conventional methods is extremely difficult. Secondly, the solubility of Ti in liquid Mg is very low and it is difficult to extend solubility by rapid solidification. Physical vapor deposition by electron beam deposition and magnetron co-sputtering has been used to extend the solubility of Ti in Mg. Mechanical alloying and anvil-cell processing at extreme temperatures and pressures have also used to enforce alloying of Mg with Ti. The present paper deals with the consolidation of blended magnesium-titanium powders by microwave heating, an approach that appears highly cost effective.

关键词：储氢；微波处理；混合钛/镁粉末

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With a focus on complex environments,the present paper describes a new algorithm in scale changed object tracking through color feature.Mean shift (MS) iterative procedure is the best color-based algorithm to find the location of an object.The algorithm performance is not acceptable once tracking scale changed objects in complex environments.In this paper,the main aim is to improve the MS method,using corrected background-weighted histogram (CBWH) algorithm to reduce the interference of background in target localization.To fit the object scale change,the sum of gradient mode (SGM) is employed.The experimental results show that the proposed method is superior to the traditional mean shift tracking in the following aspects:1) it provides consistent object tracking throughout the video; 2) it is not influenced by the tracked objects scale changes; 3) it is less prone to the background clutter.

关键词：目标跟踪;均值漂移;背景资料;梯度模式的总和;通信

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The General Dynamics (GD) S-Band software defined radio (SDR) in the Space Communications and Navigation (SCAN) Testbed on the International Space Station (ISS) will provide experimenters an opportunity to develop and demonstrate experimental waveforms in space. The GD SDR platform and initial waveform were characterized on the ground before launch and the data will be compared to the data that will be collected during on-orbit operations. A desired function of the SDR is to estimate the received signal to noise ratio (SNR), which would enable experimenters to better determine on-orbit link conditions. The GD SDR does not have an SNR estimator, but it does have an analog and a digital automatic gain control (AGC). The AGCs can be used to estimate the SDR input power which can be converted into a SNR. Tests were conducted to characterize the AGC response to changes in SDR input power and temperature. This purpose of this paper is to describe the tests that were conducted, discuss the results showing how the AGCs relate to the SDR input power, and provide recommendations for AGC testing and characterization.

关键词：自动增益控制;表征;无线电通信;空间通信;空间导航

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Mobile devices have, in many ways, replaced traditional desktops in usability, usefulness, and availability. Improvements to computational power, battery life, device capabilities, and user experience will continue to drive people to stop using desktops and solely use mobile devices. Applications are vital to maximize usefulness of these devices. Development of these applications proceeds with a rapidity that surpasses the development pace of the devices themselves. Current methods are inadequate when attempting to verify and validate the behavior of the applications to ensure they perform correctly as the customer expect and correctly with respect to the software specifications. The current V&V methods are limited to environments that do not reflect the typical operational environment for mobile devices. These methods lead to false beliefs that the results of V&V tests prove correctness of the software, when they are only proving that the software works in a non-mobile environment. To solve this problem, we propose that application log files be used to capture the execution behavior while operating in their typical environment. The log file along with customer requirements, represented formally as statechart assertions, will provide a mechanism to conduct automated V&V on the behavior of the application while it was operating in its planned, mobile environment.

关键词：行为;移动通信系统;预期寿命（使用寿命）;验证

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The HHE Program evaluated surface contamination from spills of sea lamprey pesticides that occurred in the 1960s and 1970s at a biological station. HHE Program investigators took samples of carpet that were thought to have been contaminated with pesticide and took wipe samples from surfaces. Yellow stains were seen on carpet, walls, and unsealed concrete floors. The carpet had been installed over unsealed concrete. Pesticide was found on the carpet and wipe samples from areas that were visibly stained. HHE Program investigators recommended that the stained carpet be removed and that the concrete slab floor be cleaned and sealed prior to the installation of new flooring. Walls that had visible stains should be cleaned, sealed, and repainted. Investigators also measured temperature, relative humidity, carbon monoxide, and carbon dioxide and checked the heating, ventilation, and air-conditioning system in the offices and laboratory. Room air flowed from the offices into the workshop which helped keep potentially contaminated air from entering the office space. The exhaust fan in the laboratory solvent storage room was not always turned on which allowed air to flow into the nearby laboratory. This fan should be run continuously to reduce the amount of solvent vapors that can enter nearby work areas. Investigators recommended that the employer stop sampling soil and concrete that may have been contaminated during past spills. Employees were encouraged to wash their hands with soap and water after handling pesticides and avoid touching surfaces that are visibly stained. Employees should not go into offices while wearing clothes, shoes, or materials that may have pesticides on them. Investigators also recommended that the employer notify all employees about plans to renovate the building and follow up with employees after projects are completed to ensure that these activities have eliminated visible pesticide contamination on carpet, floors, and walls.

关键词：农药；健康风险；农药污染；生物站；海七鳃鳗

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The Aeronautical Mobile Airport Communications System (AeroMACS), which is based upon the IEEE 802.16e mobile wireless standard, is expected to be implemented in the 5091 to 5150 MHz frequency band. As this band is also occupied by Mobile Satellite Service feeder uplinks, AeroMACS must be designed to avoid interference with this incumbent service. The aspects of AeroMACS operation that present potential interference are under analysis in order to enable the definition of standards that assure that such interference will be avoided. In this study, the cumulative interference power distribution at low Earth orbit from transmitters at global airports was simulated with the Visualyse Professional software. The dependence of the interference power on antenna distribution, gain patterns, duty cycle, and antenna tilt was simulated. As a function of these parameters, the simulation results are presented in terms of the limitations on transmitter power from global airports required to maintain the cumulative interference power under the established threshold.

关键词：电脑程序；机场；地面站；通信；移动通信系统

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This is the final report of the COMNAVMETOCCOM Independent Model Review Panel (CIMREP) for the Voice of America Coverage Analysis Program (VOACAP), version 05.0119W, as modified by the Space and Naval Warfare Systems Center Pacific (SSC-Pacific), Atmospheric Propagation Branch (5528). VOACAP is a tool for predicting the performance of High Frequency (HF) radio communication systems. The authors evaluated VOACAP for possible inclusion in the Oceanography and Atmospheric Master Library (OAML) by (1) using provided and online documentation from HF experts, (2) installing the program on PCs, (3) running a series of test cases and (4) comparing the output results with other HF models and VOACAP versions.

关键词：通信和广播系统；电磁辐射；大气物理学；语音通信

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关键词：车辆安全;通信系统;动态数据;智能系统

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The General Dynamics (GD) S-Band software defined radio (SDR) in the Space Communications and Navigation (SCAN) Testbed on the International Space Station (ISS) provides experimenters an opportunity to develop and demonstrate experimental waveforms .

关键词：算法；空间通信；超高频率；空间导航；通信；

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