gebhart/patrepeval huggingface dataset:
Resolver position sensing system with integrated fault detection for automotive applications (2003)

This paper describes a high-resolution position sensing system designed for use in emerging automotive applications such as electronic power steering and starter alternators. This new resolver position sensing system addresses both the cost issue and reliability issues associated with safety critical automotive applications. A variable reluctance resolver design is described. A new resolver to digital converter IC is also described. The paper focuses on the system functions and fault detection features added specifically for the application.
Efficient object annotation for surveillance and automotive applications (2016)

Accurately annotated large video data is critical for the development of reliable surveillance and automotive related vision solutions. In this work, we propose an efficient and yet accurate annotation scheme for objects in videos (pedestrians in this case) with minimal supervision. We annotate objects with tight bounding boxes. We propagate the annotations across the frames with a self training based approach. An energy minimization scheme for the segmentation is the central component of our method. Unlike the popular grab cut like segmentation schemes, we demand minimal user intervention. Since our annotation is built on an accurate segmentation, our bounding boxes are tight. We validate the performance of our approach on multiple publicly available datasets.
Structures of genes nasA and nasB, encoding assimilatory nitrate and nitrite reductases in Klebsiella pneumoniae M5al (1993)

Klebsiella pneumoniae can use nitrate and nitrite as sole nitrogen sources during aerobic growth. Assimilatory nitrate and nitrite reductases convert nitrate through nitrite to ammonium. We report here the molecular cloning of the nasA and nasB genes, which encode assimilatory nitrate and nitrite reductase, respectively. These genes are tightly linked and probably form a nasBA operon. In vivo protein expression and DNA sequence analysis revealed that the nasA and nasB genes encode 92- and 104-kDa proteins, respectively. The NASA polypeptide is homologous to other prokaryotic molybdoenzymes, and the NASB polypeptide is homologous to eukaryotic and prokaryotic NADH-nitrite reductases. The narL gene product positively regulates expression of the structural genes for respiratory nitrate reductase, narGHJI. Surprisingly, we found that the nasBA operon is tightly linked to the narL-narGHJI region in K. pneumoniae, even though the nitrate assimilatory and respiratory enzymes serve different physiological functions.
Locating features in source code (2003)

Understanding the implementation of a certain feature of a system requires identification of the computational units of the system that contribute to this feature. In many cases, the mapping of features to the source code is poorly documented. In this paper, we present a semiautomatic technique that reconstructs the mapping for features that are triggered by the user and exhibit an observable behavior. The mapping is in general not injective; that is, a computational unit may contribute to several features. Our technique allows for the distinction between general and specific computational units with respect to a given set of features. For a set of features, it also identifies jointly and distinctly required computational units. The presented technique combines dynamic and static analyses to rapidly focus on the system's parts that relate to a specific set of features. Dynamic information is gathered based on a set of scenarios invoking the features. Rather than assuming a one-to-one correspondence between features and scenarios as in earlier work, we can now handle scenarios that invoke many features. Furthermore, we show how our method allows incremental exploration of features while preserving the "mental map" the analyst has gained through the analysis.
Authenticated Key Exchange from Ideal Lattices. (2014)

Authenticated key exchange (AKE) protocols, such as IKE and SSL/TLS, have been widely used to ensure secure com-munication over the Internet. We present in this paper a practical and provably secure AKE protocol from ideal lat-tices, which is conceptually simple and has similarities to the Diffie-Hellman based protocols such as HMQV (CRYP-TO 2005) and OAKE (CCS 2013). Our protocol does not rely on other cryptographic primitives—in particular, it does not use signatures—simplifying the protocol and resting the security solely on the hardness of the ring learning with er-rors (RLWE) problem. The security is proven in a version of the Bellare-Rogaway model, with enhancements to cap-ture weak Perfect Forward Secrecy. We also present concrete choices of parameters for different security levels. A proof-of-concept implementation shows our protocol is a practical candidate post-quantum key exchange protocol. 1.
Stereoscopic image quality metrics and compression (2008)

We are interested in metrics for automatically predicting the compression settings for stereoscopic images so that we can minimize file size, but still maintain an acceptable level of image quality. Initially we investigate how Peak Signal to Noise Ratio (PSNR) measures the quality of varyingly coded stereoscopic image pairs. Our results suggest that symmetric, as opposed to asymmetric stereo image compression, will produce significantly better results. However, PSNR measures of image quality are widely criticized for correlating poorly with perceived visual quality. We therefore consider computational models of the Human Visual System (HVS) and describe the design and implementation of a new stereoscopic image quality metric. This, point matches regions of high spatial frequency between the left and right views of the stereo pair and accounts for HVS sensitivity to contrast and luminance changes at regions of high spatial frequency, using Michelson's Formula and Peli's Band Limited Contrast Algorithm. To establish a baseline for comparing our new metric with PSNR we ran a trial measuring stereoscopic image encoding quality with human subjects, using the Double Stimulus Continuous Quality Scale (DSCQS) from the ITU-R BT.500-11 recommendation. The results suggest that our new metric is a better predictor of human image quality preference than PSNR and could be used to predict a threshold compression level for stereoscopic image pairs.
Cryoprotective properties of completely synthetic polyampholytes via reversible addition-fragmentation chain transfer (RAFT) polymerization and the effects of hydrophobicity (2013)

A completely synthetic polyampholyte cryoprotectant was developed with cationic and anionic monomers by reversible addition-fragmentation chain transfer polymerization. The neutralized random polyampholyte, which had an equal composition ratio of monomers, showed high cryoprotective properties in mammalian cells. Introduction of a small amount of hydrophobic monomer enhanced cell viability after cryopreservation, indicating the importance of hydrophobicity. Leakage experiments confirmed that these polyampholytes protected the cell membrane during cryopreservation. Due to low cytotoxicity, this polyampholyte has the potential to replace the convention cryoprotective agent dimethyl sulfoxide. The present study is the first to show that we can design a polymeric cryoprotectant that will protect the cell membrane during freezing using appropriate polymerization techniques.
Amphiphilic Helical Peptide Enhances the Uptake of Single-Walled Carbon Nanotubes by Living Cells (2007)

The success of many projected applications of carbon nano-tubes (CNTs) to living cells, such as intracellular sensors and nanovectors, will depend on how many CNTs are taken up by cells. Here we report the enhanced uptake by HeLa cells of single-walled CNTs coated with a designed peptide termed nano-1. Atomic force microscopy showed that the dispersions were composed of individual and small bundles of nano-1 CNTs with 0.7- to 32-nm diameters and 100- to 400-nm lengths. Spectroscopic characterizations revealed that nano-1 disperses CNTs in a non-covalent fashion that preserves CNT optical properties. Elemental analyses indicated that our sample preparation protocol involving sonication and centrifugation effectively eliminated metal impurities associated with CNT manufacturing processes. We further showed that the purified CNT dispersions are taken up by HeLa cells in a time- and temperature-dependent fashion, and that they do not affect the HeLa cell growth rate, evidence that the CNTs inside cells are not toxic under these conditions. Finally, we discovered that approximately 6-fold more CNTs are taken up by cells in the presence of nano-1 compared with medium containing serum but no peptide. The fact that coating CNTs with a peptide enhances uptake offers a strategy for improving the performance of applications that require CNTs to be inside cells.
Sequences in the ligand-binding domains of the human androgen and progesterone receptors which determine their distinct ligand identities (1997)

The natural ligands of the progesterone (PR) and androgen (AR) receptors, progesterone and testosterone, differ only by their 17 beta-substitution. To identify within the AR and PR ligand-binding domains (LBDs) the sequences responsible for the differential recognition of these ligands, chimeric LBDs assembled from five homologous AR/PR 'cassettes' linked to the GAL4-DNA binding domain were constructed, and their ligand binding and transactivation characteristics were determined. Replacing the central cassette 3 of PR by that of AR generated a progesterone- and testosterone-responsive PR LBD with the AR residues 788-RHLS-791 being specifically involved in testosterone recognition, while the introduction of the C-terminal PR cassette 5 into AR conferred progestin responsiveness onto the AR LBD. These results suggest that residues within AR 788-RHLS-791 interact with the testosterone 17 beta-OH, while PR cassette 5 apparently contains the amino acid(s) specifically involved in the recognition of the progesterone 17 beta-acetyl group. However, ligand binding and transactivation by these chimeras were significantly decreased compared with those of the parental LBDs, indicating that residues located outside of these cassettes contribute to the proper positioning of the steroids in the AR and PR ligand-binding pockets (LBPs). Indeed, certain AR/PR chimeras acquired efficient ligand binding, but were unable to transactivate, indicating that the ligand was improperly bound in the chimeric. LBP and could not induce the conformational changes leading to a transcriptionally competent activation function (AF-2) within the LBD. The properties of the various LBD chimeras are discussed in view of the recently solved three-dimensional structures of the retinoid X receptor alpha apo- and retinoic acid receptor gamma holo-LBDs.
Multi-functionalization of oligodeoxynucleotide: a facile post-synthetic modification technique for the preparation of oligodeoxynucleotides with two different functional molecules (2000)

Treatment of the support-bound novel multi-functionalizable oligodeoxyribonucleotides bearing both 5-cyanomethoxycarbonylmethyl- and 5-methoxycarbonylmethyl-uridine with tyramine followed by tris(2-aminoethyl)amine facilitated multi-functionalization of oligodeoxyribonucleotides having different amine molecules.
Preliminary PANSAT ground station software design and use of an expert system to analyze telemetry (1994)

The Petite Amateur Navy Satellite (PANSAT) is a communications satellite designed to be used by civilian amateur radio operators. A master ground station is being built at the Naval Postgraduate School. This computer system performs satellite commands, displays telemetry, trouble-shoots problems, and passes messages. The system also controls an open loop tracking antenna. This paper concentrates on the telemetry display, decoding, and interpretation through Artificial Intelligence (A.I.). The telemetry is displayed in an easily interpretable format, so that any user can understand the current health of the satellite and be cued as to any problems and possible solutions. Only the master ground station has the ability to receive all telemetry and send commands to the spacecraft; civilian ham users do not have access to this information. The telemetry data is decommutated and analyzed before it is displayed to the user, so that the raw data will not have to be interpreted by ground users. The analysis will use CLIPS imbedded in the code, and derive its inputs from telemetry decommutation. The program is an expert system using a forward chaining set of rules based on the expected operation and parameters of the satellite. By building the rules during the construction and design of the satellite, the telemetry can be well understood and interpreted after the satellite is launched and the designers may no longer be available to provide input to the problem. PANSAT, Expert system, CLIPS, Rule-based, Ground station, Telemetry, Commanding, Rule-based.
An Automated Aspirating-Backflush System for Fluid-Gas Exchange and Retinal Manipulation (1989)

We have designed a new instrument for use in fluid-gas exchange and retinal manipulation that combines automated aspiration with reflux capabilities. Reflux capability further reduces trauma to the retina when performing procedures using active linear aspiration.
Ray‐Tracing Modeling (2012)

This chapter contains sections titled: Introduction Main Physical Phenomena Involved in Propagation Incorporating the Influence of Vegetation Ray-Tracing Methods References
Alloyed (ZnS)<sub>x</sub>(Cu<sub>2</sub>SnS<sub>3</sub>)<sub>1−x</sub>and (CuInS<sub>2</sub>)<sub>x</sub>(Cu<sub>2</sub>SnS<sub>3</sub>)<sub>1−x</sub>nanocrystals with arbitrary composition and broad tunable band gaps (2010)

Cu(2)SnS(3) nanocrystals with metastable zincblende and wurtzite structures have been successfully synthesized for the first time. Alloyed (ZnS)(x)(Cu(2)SnS(3))(1-x) and (CuInS(2))(x)(Cu(2)SnS(3))(1-x) nanocrystals with arbitrary composition (0 ≤x≤ 1) and ultra-broad tunable band gaps (3.63 to 0.94 eV) were obtained.
Synthesizing the preferred inputs for neurons in neural networks via deep generator networks (2016)

Deep neural networks (DNNs) have demonstrated state-of-the-art results on many pattern recognition tasks, especially vision classification problems. Understanding the inner workings of such computational brains is both fascinating basic science that is interesting in its own right - similar to why we study the human brain - and will enable researchers to further improve DNNs. One path to understanding how a neural network functions internally is to study what each of its neurons has learned to detect. One such method is called activation maximization (AM), which synthesizes an input (e.g. an image) that highly activates a neuron. Here we dramatically improve the qualitative state of the art of activation maximization by harnessing a powerful, learned prior: a deep generator network (DGN). The algorithm (1) generates qualitatively state-of-the-art synthetic images that look almost real, (2) reveals the features learned by each neuron in an interpretable way, (3) generalizes well to new datasets and somewhat well to different network architectures without requiring the prior to be relearned, and (4) can be considered as a high-quality generative method (in this case, by generating novel, creative, interesting, recognizable images).
Order selection for AR models by predictive least-squares (2005)

We present a new criterion for selecting the order of AR models which, unlike the existing criteria, is amenable to on-line or adaptive operation. It is based on the Predictive Least-Squares principle and is implemented in a computationally efficient way by predictive lattice filters. We prove the consistency of the criterion and demonstrate its performance by computer simulations.
Searching for Faces is Easiest when they are Cross(es) (2011)

It has been suggested that certain facial expressions are subject to enhanced processing to maximize the speed and accuracy with which humans locate individuals posing an imminant threat. Evidence supporting this proposal comes largely from visual search tasks which have demonstrated that threatening expressions are more rapidly detected than nonthreatening ones. An open criticism of this effect is that it may be due to low-level visual artifacts, rather than biological preparedness. One successful approach for controlling low-level, image-based differences has been to use schematic faces (simplified line drawings). We report experiments aimed at discovering whether the enhanced processing of threatening schematic faces, might also be due to low-level features. The first study replicated the standard threat search advantage, but also measured an effect using similar stimuli comprised of obliquely oriented lines. The effect was also present with these stimuli rotated, a manipulation which served to remove any residual resemblance the abstract images had to a face. The results suggest that low-level features underlie the search advantage for angry, schematic faces, thereby undermining a key source of evidence of a search advantage for specific facial expressions.
Negative oxidation states of the chalcogens in molten salts. 1. Raman spectroscopic studies on aluminum chlorosulfides formed in chloride and chloroaluminate melts and some related solid and dissolved compounds (1980)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNegative oxidation states of the chalcogens in molten salts. 1. Raman spectroscopic studies on aluminum chlorosulfides formed in chloride and chloroaluminate melts and some related solid and dissolved compoundsRolf W. Berg, Samuel Von Winbush, and Niels J. BjerrumCite this: Inorg. Chem. 1980, 19, 9, 2688–2698Publication Date (Print):September 1, 1980Publication History Published online1 May 2002Published inissue 1 September 1980https://pubs.acs.org/doi/10.1021/ic50211a042https://doi.org/10.1021/ic50211a042research-articleACS PublicationsRequest reuse permissionsArticle Views202Altmetric-Citations34LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Diagnostic reasoning technology for the on-board maintenance system (2002)

The authors describe On-board Maintenance System (OMS) developed by Smiths Industries Aerospace and Defense Systems, Inc. which includes inflight diagnostic and prognostic analysis of engines and mechanical systems. This on-board system is designed to enhance the data collection and recording function by providing the pilot with real-time system health information, on-board system and subsystem diagnosis, system performance prediction, and to assist ground maintenance personnel in diagnosing system malfunctions, and scheduling required maintenance actions. Ground maintenance crews have access to on-board diagnosis results while the aircraft is in flight via data link so they can be prepared when the aircraft lands to quickly repair failed units. In addition to the real time system health monitoring, the on-board system allows ground crews to perform maintenance on demand rather than performing maintenance based on time in service, thus tailoring the maintenance performed to the individual needs of each aircraft. A technology demonstration of the application of a hybrid reasoning system called the Diagnostic Reasoning Demonstrator (DRD) has been built which integrates a number of different knowledge sources and reasoning methods to demonstrate the diagnostic and prognostic analysis of mechanical failures trends and events in a gas turbine engine. The diagnostic reasoning technology is centered around hypothetical reasoning. The DRD consists of an engine model and simulator, a failure scenario builder, and the hybrid diagnostic reasoner. The demonstrator is implemented on a color laptop workstation.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
New Class of IMP Cyclohydrolases in <i>Methanococcus jannaschii</i> (2002)

The enzyme responsible for observed IMP cyclohydrolase activity in Methanococcus jannaschii was purified and sequenced: its genetic locus was found to correspond to gene MJ0626. The MJ0626 gene was cloned, and its protein product was expressed in Escherichia coli and shown to catalyze the cyclization of 5-formylamidoimidazole-4-carboxamide ribonucleotide to IMP. The enzyme has no sequence similarity to known enzymes, and its catalytic properties appear distinct from any characterized IMP cyclohydrolase. The purO gene for the enzyme is currently found only in the domain Archaea.
Achievable Rates and Outer Bounds for Full-Duplex Relay Broadcast Channel with Side Message (2019)

This paper examines the achievable rate region and the converse of a full-duplex relay broadcast channel with three independent messages: from the source to the relay, from the source to the destination, and from the relay to the destination. We are motivated to study this channel, because it models a full-duplex wireless cellular network in which the uplink user also wishes to send an independent device-to-device message to the downlink users. For the discrete memoryless channel case, we incorporate Marton's broadcast coding to obtain a new achievable rate region which is larger than previous rate regions. We further propose a tighter converse than the cut-set bound. For the Gaussian scalar channel case, we show that by using one of two rate-splitting schemes depending on the channel condition, we can already achieve the capacity region of this particular relay broadcast channel to within a constant gap. The proposed scheme outperforms the benchmark methods in terms of the symmetric generalized degree-of-freedom.
Large range dual-axis micro-stage driven by electrostatic comb-drive actuators (2013)

This paper presents a micro XY stage that employs electrostatic comb-drive actuators and achieves a bi-directional displacement range greater than 225 µm per motion axis. The proposed XY stage design comprises four rigid stages (ground, motion stage, and two intermediate stages) interconnected via flexure modules. The motion stage, which has two translational degrees of freedom, is connected to two independent single degree of freedom intermediate stages via respective parallelogram (P) transmission flexures. The intermediate stages are connected to the ground via respective clamped paired double parallelogram (C-DP-DP) guidance flexures. The C-DP-DP flexure, unlike conventional flexures such as the paired double parallelogram flexure (DP-DP), provides high bearing direction stiffness (Kb) while maintaining low motion direction stiffness (Km) over a large range of motion direction displacement. This helps delay the onset of sideways instability in the comb-drive actuators that are integrated with the intermediate stages, thereby offering a significantly greater actuation stroke compared to existing designs. The presented work includes closed-form stiffness analysis of the proposed micro-stage, finite elements simulation, and experimental measurements of its static and dynamic behavior.