The Synthetic and Enhanced Vision Systems for NextGen (SEVS) simulation and flight tests are jointly sponsored by NASA's Aviation Safety Program, Vehicle Systems Safety Technology project and the Federal Aviation ...
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ISBN:
(纸本)9781467317009
The Synthetic and Enhanced Vision Systems for NextGen (SEVS) simulation and flight tests are jointly sponsored by NASA's Aviation Safety Program, Vehicle Systems Safety Technology project and the Federal Aviation Administration (FAA). The flight tests were conducted by a team of Honeywell, Gulfstream Aerospace Corporation and NASA personnel with the goal of obtaining pilot-in-the-loop test data for flight validation, verification, and demonstration of selected SEVS operational and system-level performance capabilities. Nine test flights (38 flight hours) were conducted over the summer and fall of 2011. The evaluations were flown in Gulfstream's G450 flight test aircraft outfitted with the SEVS technology under very low visibility instrument meteorological conditions. Evaluation pilots flew 108 approaches in low visibility weather conditions (600 ft to 2400 ft visibility) into various airports from Louisiana to Maine. In-situ flight performance and subjective workload and acceptability data were collected in collaboration with ground simulation studies at LaRC's Research Flight Deck simulator. [graphics] .
Medical devices historically have been monolithic units - developed, validated, and approved by regulatory authorities as stand-alone entities. Modern medical devices increasing incorporate connectivity mechanisms tha...
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ISBN:
(纸本)9781424434947
Medical devices historically have been monolithic units - developed, validated, and approved by regulatory authorities as stand-alone entities. Modern medical devices increasing incorporate connectivity mechanisms that offer the potential to stream device data into electronic health records, integrate information from multiple devices into single customizable displays, and coordinate the actions of groups of cooperating devices to realize "closed loop" scenarios and automate clinical workflows. However, it is not clear what middleware and integration architectures may be best suited for these possibly numerous scenarios. More troubling, current verification and validation techniques used it? the device industry are not targeted to assuring groups of integrated devices. In this paper we propose a publish-subscribe architecture for medical device integration based on the Java Messaging Service, and we report at? our experience with this architecture in multiple scenarios that we believe represent the types of deployments that will benefit from rapid device integration. This implementation and the experiments presented in this paper are offered as an open test bed for exploring development, quality assurance, and regulatory issues related to medical device coordination.
作者：
Rebeiz, Gabriel M.Radiation Laboratory
Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor MI 49109-2122 United States
The effect of Brownian noise on Micro-Electro-Mechanical (MEMS)-based circuits has been calculated for MEMS-based circuits (phase shifters, delay circuits). The calculations are done for capacitive shunt MEMS switches...
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The effect of Brownian noise on Micro-Electro-Mechanical (MEMS)-based circuits has been calculated for MEMS-based circuits (phase shifters, delay circuits). The calculations are done for capacitive shunt MEMS switches and metal-to-metal contact series MEMS switches. The phase noise due to Brownian motion is negligible for MEMS switches with k 10 N/m, g0 > 2 m, Q > 0.5, and f0 50 kHz. It is also found that metal-to-metal contact series switches result in much less phase noise than standard capacitive shunt switches. The phase noise increases rapidly for low spring-constant bridges (k =0.2-4 N/m), low-height bridges, and for bridges with a large mechanical damping (Q
Recognition of human beings using shapes of their full facial surfaces is a difficult problem. Our approach is to approximate a facial surface using a collection of (closed) facial curves, and to compare surfaces by c...
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ISBN:
(纸本)9781424404681
Recognition of human beings using shapes of their full facial surfaces is a difficult problem. Our approach is to approximate a facial surface using a collection of (closed) facial curves, and to compare surfaces by comparing their corresponding curves. The differences between shapes of curves are quantified using lengths of geodesic paths between them on a pre-defined curve shape space. The metric for comparing facial surfaces is a composition of the metric involving individual facial curves. These ideas are demonstrated in the context of face recognition using the nearest-neighbor classifier.
The convergence speed of stochastic gradient descent (SGD) can be improved by actively selecting mini-batches. We explore sampling schemes where similar data points are less likely to be selected in the same mini-batc...
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A skewed systolic architecture which manages a hidden surface elimination is described. The chip was fabricated in 1.2-μm CMOS technology, and contains 330K transistors on a 11.06 mm × 11.5 mm die. It operates w...
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A skewed systolic architecture which manages a hidden surface elimination is described. The chip was fabricated in 1.2-μm CMOS technology, and contains 330K transistors on a 11.06 mm × 11.5 mm die. It operates with a single 20-MHz clock, and dissipates 4 W. The main specifications of the chip are listed.
Most of the current educational mobile apps for children are developed from the perspectives of developed countries. Due to this, many times parents from the developing/underdeveloped countries do not consider these a...
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Through Augmented Reality (AR), virtual graphics can transform the physical world. This offers benefits to mobile tourism, where points of interest (POIs) can be annotated on a smartphone screen. Although several of t...
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An 0.8-μm CMOS VLSI chip with 368k transistor sites, for a text and graphics bit-mapped two-dimensional display system, is described. The key feature of the chip is a ultrahigh-speed bit boundary block transfer capab...
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An 0.8-μm CMOS VLSI chip with 368k transistor sites, for a text and graphics bit-mapped two-dimensional display system, is described. The key feature of the chip is a ultrahigh-speed bit boundary block transfer capability, which is up to ten times faster than that of existing graphics LSI systems. Consequently, high-speed expansion of character string codes on the bit-mapped memory, high-speed smooth scrolling and multiwindows can be realized. The standard-cell-based semiautomatic design approach that was used is described. An example of a graphics system using the bit-map control processor chip is presented.
We present SfSNet, an end-to-end learning framework for producing an accurate decomposition of an unconstrained human face image into shape, reflectance and illuminance. SfSNet is designed to reflect a physical lamber...
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ISBN:
(纸本)9781538664209
We present SfSNet, an end-to-end learning framework for producing an accurate decomposition of an unconstrained human face image into shape, reflectance and illuminance. SfSNet is designed to reflect a physical lambertian rendering model. SfSNet learns from a mixture of labeled synthetic and unlabeled real world images. This allows the network to capture low frequency variations from synthetic and high frequency details from real images through the photometric reconstruction loss. SfSNet consists of a new decomposition architecture with residual blocks that learns a complete separation of albedo and normal. This is used along with the original image to predict lighting. SfSNet produces significantly better quantitative and qualitative results than state-of-the-art methods for inverse rendering and independent normal and illumination estimation.
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