gebhart/patrepeval huggingface dataset:
Equalization in dispersion-managed systems using learned digital back-propagation (2023)

In this paper, we investigate the use of the learned digital back-propagation (LDBP) for equalizing dual-polarization fiber-optic transmission in dispersion-managed (DM) links. LDBP is a deep neural network that optimizes the parameters of DBP using the stochastic gradient descent. We evaluate DBP and LDBP in a simulated WDM dual-polarization fiber transmission system operating at 32 Gbaud/s per channel, with a dispersion map designed for a 28 × 72 km link with 15% residual dispersion. Our results show that in single-channel transmission, LDBP achieves an effective signal-to-noise ratio improvement of 6.3 dB and 2.5 dB using DP-16-QAM format, respectively, over linear equalization and DBP. In WDM transmission, the corresponding Q -factor gains are 1.1 dB and 0.4 dB, respectively. Additionally, we conduct a complexity analysis, which reveals that a frequency-domain implementation of LDBP and DBP is more favorable in terms of complexity than the time-domain implementation. These findings demonstrate the effectiveness of LDBP in mitigating the nonlinear effects in DM fiber-optic transmission systems.
Toward a SLA-Based Marketplace for Digital Commercial Print Providers (2011)

We present our efforts at enabling a marketplace based on service level agreements (SLAs) for commercial print businesses, where print services can be queried, combined and searched in an automated way. Although SLAs have been an active research area in the computer networking domain, the technical and legal challenges in other industries have hindered the growth of SLAs. We believe that medium and large sized commercial print providers will profit from SLA-based marketplace as it will promote automation and better utilization of resources. We discuss the issues in incorporating SLAs in the existing commercial print workflows. We then present a protocol for negotiating SLAs among the print service providers and consumers. The negotiating protocol has support for offers as well as counter-offers. We then discuss our ongoing efforts for a prototype implementation of a SLA-based marketplace wherein we use two open source frameworks: 1) WSAG4J - for negotiating print services; and 2) Ptolemy II - for designing and analyzing print services. With these technologies, we will be able to hook up a large number of digital commercial print providers on to the SLA-based marketplace.
A New Braking Assist System Based on Driver's Gas Pedal Operation (2003)

A new brake assist system based on driver's characteristic is proposed in this paper. This paper reports a step of the designing of the brake assist system that the difference in the driver's pedal operation between the normal braking and emergency braking is considered. The result shows that a release velocity at the gas pedal in the normal braking and emergency braking is different. The new system is operated by a detection of the release velocity of the accelerator pedal. The proposed algorithm is evaluated by experiment using driving simulator. The result shows that free running distance is shorter. Eventually, the proposed brake assist system is effective for improving braking distance.
REAL-TIME ANALYSIS AND CORRECTION OF STEREOSCOPIC HDTV SEQUENCES (2009)

The Stereoscopic Analyzer (STAN) is an assistance system for the production of stereoscopic 3D. Developed by the
ChemInform Abstract: Photooxidizing Chromium Catalysts for Promoting Radical Cation Cycloadditions. (2015)

Abstract Optimal reactivity for these cycloadditions is observed using near UV irradiation; visible‐light promotion is effective too, albeit with lower yields.
Recursive consistent estimation with bounded noise (2001)

Estimation problems with bounded, uniformly distributed noise arise naturally in reconstruction problems from over complete linear expansions with subtractive dithered quantization. We present a simple recursive algorithm for such bounded-noise estimation problems. The mean-square error (MSE) of the algorithm is "almost" O(1/n/sup 2/), where n is the number of samples. This rate is faster than the O(1/n) MSE obtained by standard recursive least squares estimation and is optimal to within a constant factor.
“HOUR-GLASS” LONG BICEPS, ANOTHER CAUSE OF SHOULDER PAIN AND BLOCKAGE (2005)

Purpose: We report a new pathological entity involving the long head of the biceps tendon (LHBT). In this entity, the hypertrophic LHBT becomes incarcerated in the joint during limb elevation, leading to shoulder pain and blockage.

Material and methods: Twenty-one patients were identified. These patients presented hypertrophy of the intra-articular portion of the LHBT with tendon incarceration at limb elevation. The diagnosis was confirmed during open surgery (n=14) or arthroscopy (n=7). All cases were diagnosed in patients with an associated cuff tear. Treatment consisted in resection of the intra-articular portion of the LHBT and appropriate treatment of the cuff.

Results: All patients had anterior shoulder pain and deficient anterior flexion because of the incarcerated tendon. An intra-operative dynamic test consisted in raising the arm with the elbow extended, providing objective proof of the tendon trapped in the articulation in all cases. The positive “hour glass” test produce a fold then incarceration of the tendon between the humeral head and the glenoid cavity. Tendon resection after tenodesis (n=19) or biopolar tenotomy (n=2) yielded immediate recovery of passive complete anterior flexion. The Constant score improved from 38 points preoperatively to 76 points at last follow-up.

Discussion: The “hour glass” long biceps tendon is caused by hypertrophy of the intra-articular portion of the tendon which becomes unable to glide in the bicipital groove during anterior arm flexion. 10°–20° defective motion, pain at the level of the bicipital groove, and images of a hypertrophic tendon are good diagnostic signs. The “hour glass” LGBT must not be confused with retractile capsulitis. The definitive diagnosis is obtained at surgery with the “hour glass” test which shows a fold and incarceration of the tendon during anterior flexion with an extended elbow. Simple tenotomy is insufficient to resolve the blockage. The intra-articular portion of the tendon must be resected after bipolar tenotomy or tenodesis.

Conclusion: Systematic search for “hour glass” LHBT should be undertaken in patients with persistent anterior shoulder pain of unexplained origin associated with deficient anterior arm flexion.
Investigation on High Quality Factor 12-Fold Quasi-Photonic Crystal Microcavities with Different Central Post Sizes (2008)

We investigate the variations of modal properties of 12-fold quasi-photonic crystal microcavities sustaining whispering-gallery (WG) mode with different central post sizes. WG mode lasing action with quality factor of 8,400 and 420nm post is achieved.
High efficiency InGaAsN based quantum well lasers grown by GSMBE using a solid As source (2002)

Summary form only given. The material was grown by gas source molecular beam epitaxy (GSMBE) with only InGaAsN quantum well grown using solid source As. The active N species was generated by flowing nitrogen through a radio frequency (RF) plasma source. The active region of the laser contained a single 9 nm thick, strained InGaAsN/GaAs quantum well embedded in a 0.18 /spl mu/m thick GaAs separate confinement layer.
Editorial (2001)

The <i>Journal of Electronic Imaging</i> (JEI), copublished bimonthly with the Society for Imaging Science and Technology, publishes peer-reviewed papers that cover research and applications in all areas of electronic imaging science and technology.
Nucleotide polymorphism and copy number variant detection using exome capture and next‐generation sequencing in the polyploid grass Panicum virgatum (2014)

Switchgrass (Panicum virgatum) is a polyploid, outcrossing grass species native to North America and has recently been recognized as a potential biofuel feedstock crop. Significant phenotypic variation including ploidy is present across the two primary ecotypes of switchgrass, referred to as upland and lowland switchgrass. The tetraploid switchgrass genome is approximately 1400 Mbp, split between two subgenomes, with significant repetitive sequence content limiting the efficiency of re-sequencing approaches for determining genome diversity. To characterize genetic diversity in upland and lowland switchgrass as a first step in linking genotype to phenotype, we designed an exome capture probe set based on transcript assemblies that represent approximately 50 Mb of annotated switchgrass exome sequences. We then evaluated and optimized the probe set using solid phase comparative genome hybridization and liquid phase exome capture followed by next-generation sequencing. Using the optimized probe set, we assessed variation in the exomes of eight switchgrass genotypes representing tetraploid lowland and octoploid upland cultivars to benchmark our exome capture probe set design. We identified ample variation in the switchgrass genome including 1,395,501 single nucleotide polymorphisms (SNPs), 8173 putative copy number variants and 3336 presence/absence variants. While the majority of the SNPs (84%) detected was bi-allelic, a substantial number was tri-allelic with limited occurrence of tetra-allelic polymorphisms consistent with the heterozygous and polyploid nature of the switchgrass genome. Collectively, these data demonstrate the efficacy of exome capture for discovery of genome variation in a polyploid species with a large, repetitive and heterozygous genome.
Haptic Retargeting (2016)

Manipulating a virtual object with appropriate passive haptic cues provides a satisfying sense of presence in virtual reality. However, scaling such experiences to support multiple virtual objects is a challenge as each one needs to be accompanied with a precisely-located haptic proxy object. We propose a solution that overcomes this limitation by hacking human perception. We have created a framework for repurposing passive haptics, called haptic retargeting, that leverages the dominance of vision when our senses conflict. With haptic retargeting, a single physical prop can provide passive haptics for multiple virtual objects. We introduce three approaches for dynamically aligning physical and virtual objects: world manipulation, body manipulation and a hybrid technique which combines both world and body manipulation. Our study results indicate that all our haptic retargeting techniques improve the sense of presence when compared to typical wand-based 3D control of virtual objects. Furthermore, our hybrid haptic retargeting achieved the highest satisfaction and presence scores while limiting the visible side-effects during interaction.
Influence of contact architecture on the high-field characteristics of planar silicon structures (1996)

The profile of the contact metallization is observed to play a significant role in the high-field behaviour of high-resistivity Si wafers used for photoconductive power switch applications. In this paper, we present the influence of five different contact geometries on the electric field distribution and leakage current variation in high-resistivity silicon wafers. Experimental results indicate that at high fields, current filamentation occurs due to local avalanche phenomena at high-stress locations when the field enhancement is concentrated in a narrow region forcing a high current density. The threshold for current filamentation is not solely determined by the magnitude of the field enhancement alone, but also the localization of the field enhancement in a narrow region and the consequent increase of current density in that localized region. The experimental results are supported by numerical field computations as well as by optical micrographs that confirm the occurrence of surface filamentation at concentrated high-stress locations. Based on the experimental and computational results, contact geometries suitable for high-field applications of planar Si structures is suggested and the maximum field up to which each geometry can be used without surface filamentation is compared.
Low-dispersion optical fiber highly transparent in the UV spectral range (2004)

The National Ignition Facility performs fusion experiments using ultraviolet (351 nm) light. High-bandwidth, low-attenuation optical fibers are required to transport subnanosecond, UV laser diagnostic signals from the target chamber area to recording instruments located in adjacent rooms, with some fiber runs approximately 65 m in length. Special optical fibers are developed and fabricated to perform this task, since no existing commercially available fibers possess all of the required characteristics. These large-core (435 µm) fibers have optical dispersions less than 0.9 psec/m and attenuations less than 150 dB/km at 351 nm.
Observation of polarization sign inversion in ferroelectric liquid crystals produced by doping SC liquid crystals (1987)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTObservation of polarization sign inversion in ferroelectric liquid crystals produced by doping SC liquid crystalsJ. S. Patel and J. W. GoodbyCite this: J. Phys. Chem. 1987, 91, 23, 5838–5840Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Published inissue 1 November 1987https://doi.org/10.1021/j100307a003Request reuse permissionsArticle Views41Altmetric-Citations12LEARN 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 InReddit PDF (416 KB) Get e-Alerts
Néel “orange-peel” coupling in magnetic tunneling junction devices (2000)

We present measurements of the magnitude of Néel “orange-peel” coupling due to interface roughness in a series of magnetic tunneling junction devices. Results from magnetometry and transport measurements are shown to be in good agreement with the theoretical model of Néel. In addition, we have used transmission electron microscopy to directly probe the sample interface roughness and obtain results consistent with the values obtained by magnetometry and transport methods.
Science to Practice: How Will Myocardial Inflammation Be Imaged with MR Imaging? (2012)

The elegant study by Naresh and colleagues (1) synthesizes many of the best aspects of molecular magnetic resonance(MR) imaging: Quantitative serial imaging of a well-defined molecular process is performed in vivo, and its results are correlated with sensitive measures of left ventricular function. The technique described adds a valuable tool to the molecular imaging armamentarium. How, then, will myocardial inflammation be imaged with MR imaging?The only clinical experience to date has been with iron oxide nanoparticles (2,3). Their excellent sensitivity, dynamic range, and safety record make them a highly appealing choice. It will be critical, however, for any iron oxide nanoparticle that is used clinically to be well studied and validated in animal models of the disease before it is used in humans. A “group effect” cannot be assumed, even in the case of fairly similar iron oxide nanoparticles. The use of MR imaging–detectable liposomes appears promising,and initial clinical studies with fluorine-containing liposomes are likely to begin shortly. The clinical use of gadolinium-labeled liposomes appears further away, and the approach described by Naresh and colleagues is thus likely to remain confined to preclinical investigation for the foreseeable future. The development of novel anti-inflammatory therapies, however, will require robust imaging tools to shepherd these agents through preclinical studies and into the clinical arena. The approach described by Naresh et al adds a valuable tool to the preclinical molecular imaging armamentarium.
Room-temperature optically detected magnetic resonance of single defects in hexagonal boron nitride (2022)

Optically addressable solid-state spins are important platforms for quantum technologies, such as repeaters and sensors. Spins in two-dimensional materials offer an advantage, as the reduced dimensionality enables feasible on-chip integration into devices. Here, we report room-temperature optically detected magnetic resonance (ODMR) from single carbon-related defects in hexagonal boron nitride with up to 100 times stronger contrast than the ensemble average. We identify two distinct bunching timescales in the second-order intensity-correlation measurements for ODMR-active defects, but only one for those without an ODMR response. We also observe either positive or negative ODMR signal for each defect. Based on kinematic models, we relate this bipolarity to highly tuneable internal optical rates. Finally, we resolve an ODMR fine structure in the form of an angle-dependent doublet resonance, indicative of weak but finite zero-field splitting. Our results offer a promising route towards realising a room-temperature spin-photon quantum interface in hexagonal boron nitride.
Monolayer Detection of Supported Fe and Co Oxides on Ceria To Establish Structure–Activity Relationships for Reduction of NO by CO (2017)

A series of ceria-supported iron and cobalt oxide catalysts were synthesized with incremental metal loadings to determine within a narrow range the monolayer surface coverage. Onset of monolayer formation was monitored utilizing X-ray diffraction and Raman spectroscopy to identify the presence of microcrystalline Fe–oxide and Co–oxide phases. Formation of Fe2O3 and Co3O4 microcrystalline phases was found on the 5.40 Fe/nm2 FeOx/CeO2 and 2.58 Co/nm2 CoOx/CeO2 catalysts, respectively, and thus those surface densities approximate the monolayer coverage. The surface sensitivity of this approach was confirmed by corroborating the results with surface characterization by X-ray photoelectron spectroscopy. Catalytic activity testing was performed to illustrate the importance of establishing the monolayer coverage of each independent ceria-supported oxide system, that is, maximizing the number of metal–oxygen–support interfacial bonds. Steady-state activities for reduction of NO by CO in the presence of a stoichiometric amount of oxygen were monitored at 275 °C. Indeed, the maximum areal activity of the catalysts (0.0116 and 0.0386 μmol NO/m2/s) was found at or slightly above the approximated monolayer coverages for both supported iron or cobalt oxide catalysts, respectively. These results represent a broadening of the knowledge of monolayer oxide systems on the catalytically interesting CeO2 support, and are expected to guide rational design of future improved catalysts for the industrially useful reaction of reduction of NO by CO in the presence of oxygen.
Electronic Effects versus Distortion Energies During Strain‐Promoted Alkyne‐Azide Cycloadditions: A Theoretical Tool to Predict Reaction Kinetics (2013)

Abstract Second‐order reaction kinetics of known strain‐promoted azide–alkyne cycloaddition (SPAAC) reactions were compared with theoretical data from a range of ab initio methods. This produced both detailed insights into the factors determining the reaction rates and two straightforward theoretical tools that can be used to predict a priori the reaction kinetics of novel cyclooctynes for strain‐promoted cycloaddition reactions. Multiple structural and electronic effects contribute to the reactivity of various cyclooctynes. It is therefore hard to relate a physical or electronic property directly and independently to the reactivity of the cyclooctyne. However, we show that Hartree–Fock LUMO energies, which were acquired while calculating activation energies at the MP2 level of theory, correlate with second‐order kinetic rate data and are therefore usable for reactivity predictions of cyclooctynes towards azides. Using this correlation, we developed a simple theoretical tool that can be used to predict the reaction kinetics of (novel) cyclooctynes for SPAAC reactions.
Affine projection and recursive least squares adaptive filters employing partial updates (2005)

We present order K affine projection and recursive least squares adaptive filters employing partial update schemes. The starting point of the work is the MMax tap-selection criterion in which, given a filter length L, only M coefficients are updated that correspond to the M largest magnitude elements of the regression vector. We extend this approach from its existing form of MMax-NLMS to new affine projection and recursive least squares schemes with supporting analysis and simulation results. We discuss the computational complexity of these approaches for two alternative sort procedures. Finally, we extend the MMax criterion to a multichannel case by introducing an exclusivity constraint and show the effectiveness of the resulting XM tap-selection criterion for application to stereophonic acoustic echo cancellation.
Distributed Smart Spaces M3 Platform for Building Professional Social Networks with Seamless PCs and Mobile Access (2010)

this paper proposes the social network solution that has been designed to fit equally well for use at mobile devices, PCs and even other types of consumer electronics. This solution is targeted to become a core element of the personal knowledge space and the design has be been done on top of M3 smart space. Target of this paper is to improve and to expand the understanding of the Smart Spaces concept by the RD M3; supporting distributed R&D projects.
Measurement of 13Cα−13Cβ Dipolar Couplings in 15N,13C,2H-Labeled Proteins:  Application to Domain Orientation in Maltose Binding Protein (2001)

TROSY-based HN(CO)CA 2D and 3D pulse schemes are presented for measurement of (13)C(alpha)-(13)C(beta) dipolar couplings in high molecular weight (15)N,(13)C,(2)H-labeled proteins. In one approach, (13)C(alpha)-(13)C(beta) dipolar couplings are obtained directly from the time modulation of cross-peak intensities in a set of 2D (15)N-(1)HN correlated spectra recorded in both the presence and absence of aligning media. In a second approach 3D data sets are recorded with (13)C(alpha)-(13)C(beta) couplings encoded in a frequency dimension. The utility of the experiments is demonstrated with an application to an (15)N,(13)C,(2)H-labeled sample of the ligand free form of maltose binding protein. A comparison of experimental dipolar couplings with those predicted from the X-ray structure of the apo form of this two-domain protein establishes that the relative orientation of the domains in solution and in the crystal state are very similar. This is in contrast to the situation for maltose binding protein in complex with beta-cyclodextrin where the solution structure can be generated from the crystal state via a 11 degrees domain closure.