The principle objective of this proposal is to develop a positron emission tomography (PET) detector with depth-of-interaction (DOI) positioning capability that will achieve state of the art spatial resolution and sensitivity performance for small animal PET imaging. When arranged in a ring or box detector geometry, the proposed detector module will support 15absolute detection efficiency. The detector will also be compatible with operation in a MR scanner to support simultaneous multi-modality imaging. The detector design will utilize a thick, monolithic crystal scintillator readout by a two-dimensional array of silicon photomultiplier (SiPM) devices using a novel sensor on the entrance surface (SES) design. Our hypothesis is that our single-ended readout SES design will provide an effective DOI positioning performance equivalent to more expensive dual-ended readout techniques and at a significantly lower cost. Our monolithic crystal design will also lead to a significantly lower cost system. It is our goal to design a detector with state of the art performance but at a price point that is affordable so the technology can be disseminated to many laboratories. A second hypothesis is that using SiPM arrays, the detector will be able to operate in a MR scanner without any degradation in performance to support simultaneous PET/MR imaging. Having a co-registered MR image will assist in radiotracer localization and may also be used for partial volume corrections to improve radiotracer uptake quantitation. The far reaching goal of this research is to develop technology for medical research that will lead to improvements in human health care.

关键词：传感器；探测器；晶体；正电子发射断层扫描

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The construction and the operating principle of the novel micro-angular vibration testbed (MAVT) are presented, the MAVT is designed to complete the angular performance testing for the micro sensor and parts such as MEMS-gyro, angular accelerometer. A systemic design procedure of the optimized flexure hinge and general voice coil actuator (VCA) to fine single-axis MAVT actuator are introduced for fast and precision actuation. A method for measuring frequency response function by means of a displacement sensor electric eddy current sensor is designed. To verify the performance of the designed MAVT, frequency response of the system are performed, the differential equation of the pull-tilting motion is established according to the Lagrange's equation, the formula of the natural frequency is derived, and the model analysis of the MAVT is also carried out with the help of limited element analysis. The static stiffness experiments show that the angular stroke of the MAVT is 1 ° and preliminary tests performed on the closed-loop control system indicate that angular resolution of 1' can be achieved. Model experiments performed on the prototype of MAVT are presented and the theoretic result fits with the result of experiment (250Hz). For fast and precision actuation performances, design parameters are selected based on the dynamic model of VCA and flexure hinge, and design process is completed. The model results can be provided for the construction design of the MAVT. Conventional platforms of angular performance testing are bulky and costly. Analysis and experiments results indicate that the novel MAVT is an efficient platform to complete the angular performance testing for micro sensor and parts

关键词：传感器；微角振动试验台；柔性铰链；动态分析；音圈电机

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Access to information is critical to both the commander in an AOC and the warfighter in the field. Typically information is readily available at centralized command posts, however, at the tactical edge, resources are far more limited, making information dissemination a challenge. Targeting pods, already found mounted to the hardpoints of many tactical aircraft, provide a cost effective platform for making information available to tactical users. To this end, the Network-Centric Exploitation and Tracking (N-CET) program is designing, developing, and implementing a proof of concept architecture for pods that is net-centric, reconfigurable, and allows processing at the sensor. The approach taken to achieve these attributes is to embed processing and communications on the pod, and employ net-centric exploitation and fusion algorithms to distil information from high fidelity sensor data. Information Management services provide the interface between the sensors, processing, and network, disseminating information between algorithms, and prioritizing it as it goes out over the network. This paper provides an overview of the N-CET architecture and the sensors and net-centric algorithms integrated to evaluate the performance of the architecture through ground based experimentation.

关键词：探测器；分布式信息系统；网络中心；高性能计算

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The unparalleled accuracies of accelerometers, gyroscopes and gravity sensors based on light-pulse atom interferometry methods hold great promise for a broad range of demanding military and commercial applications in navigation and geophysical exploration. Previous atom optic (AO) sensor development efforts have validated the technology for high-accuracy applications. This program assessed the suitability of the technology for navigation-grade sensors operating on Army platforms. First, we developed a preliminary design for a single-axis AO accelerometer for use on an Army all- terrain vehicle (ATV). Various trade studies guided the mechanical, optical, electrical and operational designs of the accelerometer. Sensitivity and error models predicted that the Army accelerometer would meet the specified performance objectives. We experimentally tested innovative technologies that could potentially simplify the accelerometer design. More refined simulations informed the final selection of the techniques for generating cold atoms in sensors operating on moving platforms. Based on the results of the preceding analysis and the technology validation studies, we iterated the accelerometer design and supported a critical design review for the Army accelerometer. Future efforts should build and test the prototype accelerometer.

关键词：加速度计；光探测器；原子干涉仪；ATV（全地形车）

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The paper presents application of a novel method for coating of the liquid GC materials on the surface of quartz crystal microbalance (QCM) sensors. The method consists of a simultaneous sorption of lipopolymer, lipid and liquid GC material and results in the effective immobilization of the liquid materials and formation of fairly stable sensitive membranes.

关键词：气味传感器；QCM传感器；液体气相色谱材料；脂肪聚合物

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Computer science and information technologies offer a wide range of tools for examining sustainability challenges. Advances in computer science have already provided environmental and sustainability researchers with a valuable tool setcomputational modeling, data management, sensor technology, machine learning, and other toolsand additional research in computer science may provide advanced approaches, tools, techniques, and strategies toward understanding, addressing, and communicating sustainability challenges.

关键词：信息技术；计算机建模；数据管理；传感器技术

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The Goddard-IRAM Superconducting 2 Millimeter Observer (GISMO) is an 8xl6 Transition Edge Sensor (TES) array of bolometers built as a pathfinder for TES detector development efforts at NASA Goddard Space Flight Center. GISMO has been used annually at the Institut de Radioastronomie Millimetrique (IRAM) 30 meter telescope since 2007 under engineering time and was opened in the spring of 2012 to the general astronomical community. The spring deployment provided an opportunity to modify elements of the room temperature optics before moving the instrument to its new permanent position in the telescope receiver cabin. This allowed for the possibility to extend the cryostat, introduce improved cold baffling and thus further optimize the stray light performance for final astronomical use of the instrument, which has been completed and validated. We will demonstrate and discuss several of the methods used to quantify and limit the influence of stray light in the GISMO camera.

关键词：辐射热测量仪；照相机；光学测量仪器；低温恒温器；接收器

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We present results on quasidiffusion studies in large, 3 inch diameter, 1 inch thick (100) high purity germanium crystals, cooled to 50 mK in the vacuum of a dilution refrigerator, and exposed with 59.5 keV gamma-rays from an Am-241 calibration source. We compare data obtained in two different detector types, with different phonon sensor area coverage, with results from a Monte Carlo. The Monte Carlo includes phonon quasidiffusion and the generation of phonons created by charge carriers as they are drifted across the detector by ionization readout channels.

关键词：传感器；锗；GE半导体探测器；电离；声子

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Point-based traffic sensors, such as microwave radar and acoustic sensors, provide the valuable capability of sampling the entire traffic stream. However, full network coverage with point sensors requires a significant initial capital investment and ongoing maintenance expenditures. Probe-based sensors can cover an extensive roadway network at a much lower cost because roadway-based field equipment is not required. Decisions regarding the relative level of point sensor- versus probe-based deployment for traffic monitoring involve evaluating the trade-off between the value of comprehensive detection versus total system costs. An essential step in evaluating this trade-off involves directly comparing collocated point sensor and probe vehicle systems to understand how the derived traffic stream measures from the two approaches differ. This study compared 5-min speeds from microwave radar and acoustic sensors with link speeds from Global Positioning System (GPS) probes for both directions at five freeway locations. Systematic differences were found at one location. Floating car GPS runs were performed to confirm that the systematic error lay in the point speeds. The speed differences at all sites were normally distributed, with three locations indicating a mean speed difference greater than 5 mph. Nonsystematic speed differences were identified; the difference was more than 1.5 standard deviations lower than the mean difference. This difference may indicate inherent inaccuracies in reported GPS speeds under heavy congestion, including instances of time lag in recovering from congested speeds.

关键词：传感器；探测器；雷达；全球定位系统（GPS）

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No abstract available.

关键词：信息系统；仿生学；感觉运动控制；传感器融合

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