gebhart/patrepeval huggingface dataset:
Stereoscopic rendering of virtual environments with wide Field-of-Views up to 360&#x00B0; (2014)

In this paper we introduce a novel approach for stereoscopic rendering of virtual environments with a wide Field-of-View (FoV) up to 360°. Handling such a wide FoV implies the use of non-planar projections and generates specific problems such as for rasterization and clipping of primitives. We propose a novel pre-clip stage specifically adapted to geometric approaches for which problems occur with polygons spanning across the projection discontinuities. Our approach integrates seamlessly with immersive virtual reality systems as it is compatible with stereoscopy, head-tracking, and multi-surface projections. The benchmarking of our approach with different hardware setups could show that it is well compliant with real-time constraint, and capable of displaying a wide range of FoVs. Thus, our geometric approach could be used in various VR applications in which the user needs to extend the FoV and apprehend more visual information.
Crack Turning and Arrest Mechanisms for Integral Structure (1999)

In the course of several years of research efforts to predict crack turning and flapping in aircraft fuselage structures and other problems related to crack turning, the 2nd order maximum tangential stress theory has been identified as the theory most capable of predicting the observed test results. This theory requires knowledge of a material specific characteristic length, and also a computation of the stress intensity factors and the T-stress, or second order term in the asymptotic stress field in the vicinity of the crack tip. A characteristic length, r(sub c), is proposed for ductile materials pertaining to the onset of plastic instability, as opposed to the void spacing theories espoused by previous investigators. For the plane stress case, an approximate estimate of r(sub c), is obtained from the asymptotic field for strain hardening materials given by Hutchinson, Rice and Rosengren (HRR). A previous study using of high order finite element methods to calculate T-stresses by contour integrals resulted in extremely high accuracy values obtained for selected test specimen geometries, and a theoretical error estimation parameter was defined. In the present study, it is shown that a large portion of the error in finite element computations of both K and T are systematic, and can be corrected after the initial solution if the finite element implementation utilizes a similar crack tip discretization scheme for all problems. This scheme is applied for two-dimensional problems to a both a p-version finite element code, showing that sufficiently accurate values of both K(sub I) and T can be obtained with fairly low order elements if correction is used. T-stress correction coefficients are also developed for the singular crack tip rosette utilized in the adaptive mesh finite element code FRANC2D, and shown to reduce the error in the computed T-stress significantly. Stress intensity factor correction was not attempted for FRANC2D because it employs a highly accurate quarter-point scheme to obtain stress intensity factors.
Byzantine Resilient Non-Convex SCSG With Distributed Batch Gradient Computations (2021)

Distributed learning is an important paradigm in the current machine learning algorithms with large datasets. In this paper, distributed stochastic optimization problem of minimizing a nonconvex function in an adversarial setting is considered. A robust variant of the stochastic variance-reduced algorithm is proposed. In the distributed setup, we assume that a fraction of worker nodes (WNs) can be Byzantines. We assume that the batch gradients are computed at the WNs and the stochastic gradients are computed at the central node (CN). We provide the convergence rate of the proposed algorithm which employs the design of a novel filtering rule that is independent of the problem dimension. Furthermore, we capture the effect of Byzantines present in the network on the convergence performance of the algorithm. We evaluate the performance of the proposed algorithm and present the simulation results using real world datasets, in addition to providing the theoretical guarantees.
Planarized patterning of Y-Ba-Cu-O thin films for multilayer technology (1995)

Planarized layers of YBa/sub 2/Cu/sub 3/O/sub 7/ (YBCO) were made by etching trenches in SrTiO/sub 3/ (STO) substrates, laser depositing a YBCO film and mechanically polishing the film down to the substrate surface. These structures exhibited critical temperatures (T/sub c/) of 88 K and a critical-current density (J/sub c/) of 10/sup 6/ A/cm/sup 2/ at 77 K. The planarized surface was smooth, with a maximum height difference between the YBCO and STO of 20 nm. The surfaces were used as templates for epitaxial growth of multilayer insulators of STO and PrBa/sub 2/Cu/sub 3/O/sub 7/ (PBCO) and top YBCO layers. Complete crossovers, free of superconducting shorts, with T/sub c/ of 86 K and critical current density (J/sub c/) of 2/spl times/10/sup 5/ A/cm/sup 2/ were made.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Laminar Flow on Endothelial Cells Suppresses eNOS O-GlcNAcylation to Promote eNOS Activity (2021)

[Figure: see text].
Modification of the Phase Stability of Polymer Blends by Diblock Copolymer Additives (1995)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTModification of the Phase Stability of Polymer Blends by Diblock Copolymer AdditivesJacek Dudowicz, Karl F. Freed, and Jack F. DouglasCite this: Macromolecules 1995, 28, 7, 2276–2287Publication Date (Print):March 1, 1995Publication History Published online1 May 2002Published inissue 1 March 1995https://pubs.acs.org/doi/10.1021/ma00111a023https://doi.org/10.1021/ma00111a023research-articleACS PublicationsRequest reuse permissionsArticle Views292Altmetric-Citations62LEARN 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
Erbb4 Signaling in the Mammary Gland Is Required for Lobuloalveolar Development and Stat5 Activation during Lactation (1999)

Signaling by members of the epidermal growth factor receptor family plays an important role in breast development and breast cancer. Earlier work suggested that one of these receptors, ErbB4, is coupled to unique responses in this tissue. To determine the function of ErbB4 signaling in the normal mouse mammary gland, we inactivated ErbB4 signaling by expressing a COOH terminally deleted dominant-negative allele of ErbB4 (ErbB4DeltaIC) as a transgene in the mammary gland. Despite the expression of ErbB4DeltaIC from puberty through later stages of mammary development, an ErbB4DeltaIC-specific phenotype was not observed until mid-lactation. At 12-d postpartum, lobuloalveoli expressing ErbB4DeltaIC protein were condensed and lacked normal lumenal lactation products. In these lobuloalveoli, beta-casein mRNA, detected by in situ hybridization, was normal. However, whey acidic protein mRNA was reduced, and alpha-lactalbumin mRNA was undetectable. Stat5 expression was detected by immunohistochemistry in ErbB4DeltaIC-expressing tissue. However, Stat5 was not phosphorylated at Y694 and was, therefore, probably inactive. When expressed transiently in 293T cells, ErbB4 induced phosphorylation of Stat5. This phosphorylation required an intact Stat5 SH2 domain. In summary, our results demonstrate that ErbB4 signaling is necessary for mammary terminal differentiation and Stat5 activation at mid-lactation.
The Aquaporin Gene Family of the Yellow Fever Mosquito, Aedes aegypti (2010)

Our results support the notion that AQP1, 4, and 5 function as water transporters in the MTs of adult female Ae. aegypti mosquitoes. Our results demonstrate the importance of these AQPs for mosquito diuresis after blood ingestion and highlight their potential as targets for the development of novel vector control strategies.
SUQ$2$: Uncertainty Quantification Queries over Large Spatio-temporal Simulations (2020)

International audience
1-Oxo-steroids. Part 2. Model studies for the synthesis of the withanolides (1977)

Several cholestane derivatives possessing rings A and B with the same substitution pattern as in the naturally occurring steroidal lactones of the withanolide group have been synthesised: 4β-hydroxycholesta-2,5-dien-1-one (10), 5,6β-epoxy-4β-hydroxy-5β-cholest-2-en-1-one (12), cholesta-2,5-dien-1-one (19), and 5,6β-epoxy-5β-cholest-2-en-1-one (21). Several other compounds in which rings A and B have a substitution pattern not yet encountered among the natural withanolides have also been prepared: 5,6α-epoxy-4β-hydroxy-5α-cholest-2-en-1-one (11), 5,6α-epoxy-5α-cholest-2-en-1-one (20), and 4α-acetoxy-5-hydroxy-5β-cholest-2-en-1-one (28).
Learning Statistical Patterns in Relational Data Using Probabilistic Relational Models (2005)

Abstract : This report describes techniques for learning probabilistic models of relational data, and using these models to interpret new relational data. This effort focused on developing undirected probabilistic models for representing and learning graph patterns, learning patterns involving links between objects, learning discriminative models for classification in relational data, developing and labeling two real-world relational data sets - one involving web data and the other a social network - and evaluating the performance of our methods on these data sets, and dealing with distributions that are non-uniform, in that different contexts (time periods, organizations) have statistically different properties. The technology developed under this effort was transitioned and is being used under the Perceptive Assistant Program (PAL) at DARPA.
Preparation of phosphor glass via screen printing technology and packaged performance for LEDs (2013)

A simple and practical method for preparing phosphor glass is proposed. Phosphor distribution and element analysisi are investigated by optical microscope and FE-SEM. The phosphor particles dispersed in matrix is vividly observed and their distributions are uniform. Spectrum distribution and color coordinates depended on thickness of screen printed phosphor layer coupled with blue LED chip are also studied. The luminous efficacy of the 75 μ m phosphor layer phosphor glass packaged white LED is 81.24 lm/W at 350mA. This study opens up many possibilities for applications using the phosphor glass on a selected chip which emission is well absorbed by all phosphors. The screen printing technique also offers possibilities for the design and engineering of complex phosphor layers on glass substrates. This design allowed us to get rid of the re-absorption problems affecting the global chromaticity. Phosphor screen printing tecnnology allows the realization of high stability and thermal conductivity for phosphor layer. And this simple phosphor glass method provides many possibilities for LED packing, including TFFC (thin film flip chip) and remote phosphor technology.
Understanding IEEE 1584 arc flash calculations (2005)

This paper presents the IEEE 1584 guide for calculating arc-flash energies and arc flash protection. There are different methods included in this guide for calculating the arc flash associated with circuit breakers. The most accurate method included is to acquire specific device characteristics from the circuit breaker manufacturer. When this information is not available, the IEEE guide also includes a secondary circuit breaker method which is more conservative, and therefore calculates high values of arc energy that may mandate more protection than is necessary.
ChemInform Abstract: BORON COMPOUNDS. 45. 6‐DEOXY‐O‐ACYL‐α‐L‐MANNOFURANOSES VIA O‐ETHYLBORANEDIYL DERIVATIVES (1978)

Abstract Die Herstellung verschiedener Zucker‐Borderivate wird beschrieben Aus der 6‐Desoxy‐a‐L‐mannopyranose (I) und Triethylbor (II) erhält man Substitutionsprodukte (III) bzw. (IV) und (V).
A New, Efficient Route to Titanium-Silsesquioxane Epoxidation Catalysts Developed by Using High-Speed Experimentation Techniques (2001)

High-speed experimentation techniques have been applied in the synthesis and testing of silsesquioxane-based titanium catalysts (see picture) for the epoxidation of alkenes. Different solvents and organotrichlorosilanes were employed in the optimization of the hydrolytic condensation of silanes to open silsesquioxane structures. This new, fast, and simple synthesis route yields catalysts whose performance is comparable to the best known silsesquioxane-based titanium catalysts.
Control of a Robotic Hand Using a Tongue Control System—A Prosthesis Application (2016)

For transhumeral and especially bilateral amputees, the ITCS control scheme could have a significant impact on the prosthesis control. In addition, the ITCS would provide bilateral amputees with the additional advantage of environmental and computer control for which the ITCS was originally developed.
Textured metal baffles for stray light suppression in rugged systems (1992)

Summary not available at press time.
Near-Total Absence of the Cerebellum (2001)

We report five cases of near-total absence of the cerebellum with accompanying pontine hypoplasia. The cerebellar remnant in each case comprised only antero-superior masses, the posterior fossa being otherwise fluid filled. Three of these patients, two teenagers and an infant, presented a fairly consistent clinical and neuroradiological phenotype, and a few similar cases are recorded in the literature. The cerebellar remnant was irregular and asymmetrical, and no ventral pontine prominence was discernible. In at least the older two, cerebellar motor functions were not greatly compromised, and intellectual handicap was of a mild degree. We propose that these cases represent a distinct entity of "near-total absence of the cerebellum with flat ventral pons, and relatively mild clinical affection". All cases have been sporadic, implying that the risk of recurrence within a family may be low. Quite different clinical pictures, of considerably greater severity, are demonstrated in the remaining two cases. One had pontocerebellar hypoplasia type 2, while the other had a complex cerebellar and cerebral malformation.
General Bayes filtering of quantized measurements (2011)

Quantized data is frequently encountered when data must be compressed for efficient transmission over communication networks. Since quantized measurements are not precise but are, rather, subsets (cells, bins, quanta) of measurement space, conventional filtering methods cannot be used to process them. In recent papers, Zhansheng Duan, X. Rong Li, and Vesselin Jilkov have devised generalizations of the Kalman filter that can process quantized measurements. In this paper I provide a theoretical foundation for processing such measurements, based on a Bayes filtering theory for "generalized measurements" mediated by "generalized likelihood functions." As a consequence, I also show that this theory (1) results in a general Bayes-optimal approach for filtering quantized measurements; (2) generalizes the Duan-Li-Jilkov filtering theory; and (3) can be extended to "noncooperatively quantized" measurements such as fuzzy Dempster-Shafer (FDS) quantized measurements. I conclude by arguing that quantized measurements provide a concrete, applications-based conceptual bridge between "probabilistic" and "nonprobabilistic" forms of expertsystem reasoning. © 2011 IEEE.
Finding Intermediary Topics Between People of Opposing Views: A Case\n Study (2015)

In micro-blogging platforms, people can connect with others and have\nconversations on a wide variety of topics. However, because of homophily and\nselective exposure, users tend to connect with like-minded people and only read\nagreeable information. Motivated by this scenario, in this paper we study the\ndiversity of intermediary topics, which are latent topics estimated from user\ngenerated content. These topics can be used as features in recommender systems\naimed at introducing people of diverse political viewpoints. We conducted a\ncase study on Twitter, considering the debate about a sensitive issue in Chile,\nwhere we quantified homophilic behavior in terms of political discussion and\nthen we evaluated the diversity of intermediary topics in terms of political\nstances of users.\n
Urinary Markers in the Everyday Diagnosis of Bladder Cancer (2013)

Bladder cancer (BC) represents the fourth most common neoplasia in men and the ninth most common cancer in women, with a significant morbidity and mortality. Cystoscopy and voided urine cytology (involving the examination of cells in voided urine to detect the presence of cancerous cells) are currently the routine initial investigations in patients with hematuria or other symptoms suggestive of BC. Around 75-85% of the patients are diagnosed as having non-muscle-invasive bladder cancer (NMIBC). Despite the treatment, these patients have a probability of recurrence at 5 years ranging from 50 to 70% and of progression to muscle invasive disease of 10-15%. Patients with NMIBC must undergo life-long surveillance, consisting of serial cystoscopies, possibly urine cytology and ultrasonography. Cystoscopy is unsuitable for screening because of its invasiveness and costs; serial cystoscopies may cause discomfort and distress to patients. Furthermore, cystoscopy may be inconclusive, falsely positive or negative. Although urine cytology has a reasonable sensitivity for the detection of high-grade BC, it lacks sensitivity to detect low-grade tumors (sensitivity ranging from 4 to 31%). The overall sensitivity and specificity of urine cytology range from 7 to 100 and from 30 to 70%, respectively. There is a need for new urine biomarkers that may help in BC diagnosis and surveillance. A lot of urinary biomarkers with high sensitivity and/or specificity have been investigated. Although none of these markers have proven to be powerful enough to replace standard cystoscopy, some of them may represent accurate predictors of BC. A review of recent studies is presented.
Enhanced efficiency of near-UV emitting LEDs for solid state lighting applications (2007)

The performance of a series of near-UV (~385 nm) emitting LEDs, consisting of high efficiency InGaN/AlInGaN QWs in the active region, was investigated. Significantly reduced roll-over of efficiency at high current density was found compared to InGaN/GaN LEDs emitting at a similar wavelength. The importance of optical cavity effects in flip-chip geometry devices has also been investigated. The light output was enhanced by more than a factor of 2 when the light-emitting region was located at an anti-node position with respect to a high reflectivity current injection mirror. A power of 0.49 mW into a numerical aperture of 0.5 was obtained for a junction area of 50 micrometers in diameter and a current of 30 mA, corresponding to a radiance of 30 W/cm2/str.
Reconfigurable multi-beam spiral antenna with RF-MEMS capacitive series switches fabricated on rigid substrates (2005)

A single-arm rectangular spiral antenna, which radiates multi-beam with radiofrequency-microelectromechanical system (RF-MEMS) capacitive series switches, is monolithic fabricated on rigid substrates (glass: /spl epsiv//sub t/ = 7.4 and quartz: /spl epsiv//sub t/ = 3.8). The spiral is configured by three-arms, which can be interconnected by two RF-MEMS series switches. The proposed antenna radiates left hand circular polarization (LHCP). The gain of multibeams is between 1 /spl sim/ 3 dBi for glass substrate and 3 /spl sim/ 5 dBi for quartz substrates. Multibeams of antennas satisfy a 3-dB axial ratio criterion at operating frequency band 11 GHz for glass and 6 GHz for quartz substrates.
Hesperidinase encapsulation towards hesperitin production targeting improved bioavailability (2012)

Hesperidin (hesperitin-7-O-rutinoside) and hesperitin (hesperitin-7-O-glucoside) show anti-inflammatory, antimicrobial, antioxidant, and anticarcinogenic effects and prevent bone loss. However, hesperidin has a low bioavailability compared to hesperitin due to the rutinoside moiety attached to the flavonoid. The removal of the rhamnose group to yield the corresponding flavonoid glucoside (hesperetin-7-glucoside) improved the bioavailability of the aglycone, hesperetin, in humans. In line with these assumptions, the aim of this work was the enzymatic production of hesperitin from hesperidin with hesperidinase. Despite the low hesperidin solubility in the reaction medium, the enzymatic bioconversion was carried with hesperidin soluble at lower concentrations (≤0.05 mg ml(-1)) and insoluble for high concentrations (>0.1-50 mg ml(-1)). A twofold increase in maximum reaction rates overtook the expected values, pointing to the enzyme ability to degrade insoluble hesperidin. To improve the bioprocess, hesperidinase was tested soluble and immobilized in calcium alginate (2%), k-carrageenan (2%), and chitosan (2%) beads. The immobilization was carried out by adsorption and encapsulation. Chitosan was cross-linked with glutaraldehyde (1% and 2%) and sodium sulfate (13.5% and 15%) in acetate buffer (0.02 M, pH 4.0). The relation between bioprocessing conditions and hesperidinase stability was studied. A residual activity of 193% was obtained with immobilized hesperidinase compared to the soluble form. A half-life of 770 min was attained with hesperidinase encapsulated in calcium alginate beads. The results presented in this work highlight the potential of hesperidinase encapsulation towards hesperitin production with insoluble substrate. To our knowledge, this work presents for the first time the potential of hesperidinase encapsulation on hydrogels for hesperitin production. This is an important achievement for pharmaceutical and nutraceutical applications of hesperitin because this compound presents a higher bioavailability compared to hesperidin.
Stereovision-based 3D lane detection system: a model driven approach (2008)

A new stereovision-based method for the road lane detection and 3D geometry estimation is presented in this paper. The proposed approach is based on a recognition algorithm driven by a statistical model of the 3D road lane, projected in both stereoscopic images. First, the model is initialized thanks to a training stage. The model is then updated iteratively, from successively extracted image features. After each iteration, the detection of the next features, in any of the two images of the stereoscopic pair, is driven by the features already detected. The parameters of the road lane, such as width, horizontal and vertical curvature, roll, pitch, and yaw angles, are estimated. The variance of each parameter is also estimated, and is minimized through the estimation process. Unlike previous proposed approaches, no disparity map is required : the matching of the image features is directly obtained as a result of the model update. Thus, computing time is low. Experiments from computer-generated and real images are carried out to assess the efficiency and accuracy of the method.