gebhart/patrepeval huggingface dataset:
Efficient Processing of Top-k Queries in Uncertain Databases with x-Relations (2008)

This work introduces novel polynomial algorithms for processing top-k queries in uncertain databases under the generally adopted model of x-relations. An x-relation consists of a number of x-tuples, and each x-tuple randomly instantiates into one tuple from one or more alternatives. Our results significantly improve the best known algorithms for top-k query processing in uncertain databases, in terms of both runtime and memory usage. In the single-alternative case, the new algorithms are 2 to 3 orders of magnitude faster than the previous algorithms. In the multialternative case, we introduce the first-known polynomial algorithms, while the current best algorithms have exponential complexity in both time and space. Our algorithms run in near linear or low polynomial time and cover both types of top-k queries in uncertain databases. We provide both the theoretical analysis and an extensive experimental evaluation to demonstrate the superiority of the new approaches over existing solutions.
On the σ - reciprocal system for model order reduction (1995)

In this paper a definition of the oσ-reciprocal system is introduced. This allows us to show that the generalized singular perturbation approximation method for model reduction is related to the direct truncation of the σ -reciprocal system. On the basis of this definition, two new model order reduction algorithms are presented. The suitability of the proposed reduction methods is illustrated by means of two numerical examples.
Exact analytic solutions to the nonlinear wave equation for a saturable Kerr-like medium: modes of nonlinear optical waveguides and couplers (1994)

Exact analytic solutions to the nonlinear wave equation for a lossless saturable Kerr-like medium are found. The nonlinearity is an intensity-dependent refractive index which saturates according to the model n/sup 2/=n/sub 0//sup 2//spl plusmn/a|E|/sup 2//(1+b|E|/sup 2/). The solutions to the wave equation are used to determine the TE power-dependent dispersion relations, and therefore the guided modes, of a single waveguide structure and of a directional coupler whose coupling medium is the nonlinear saturable material. Although the interaction between the sinh- and cosh-like modes of the coupler, and therefore the coupling length, is not treated in this work, it is shown that the critical power, defined in the literature to be the level of input power above which 100% of the power cannot be switched between the guides of a coupler, is a mathematical misinterpretation in both saturable media as well as in nonsaturable Kerr media. The absence of a critical power in single waveguide structures is also demonstrated. Parameters of GaAs-based waveguides and of a GaAs-GaAlAs MQW coupling medium are used in the numerical analysis.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Analysis of optical flow constraints (1995)

Different constraint equations have been proposed in the literature for the derivation of optical flow. Despite of the large number of papers dealing with computational techniques to estimate optical flow, only a few authors have investigated conditions under which these constraints exactly model the velocity field, that is, the perspective projection on the image plane of the true 3-D velocity. These conditions are analyzed under different hypotheses, and the departures of the constraint equations in modeling the velocity field are derived for different motion conditions. Experiments are also presented giving measures of these departures and of the induced errors in the estimation of the velocity field.
Intersubband transition in InGaAs/AlAsSb/InP coupleddouble quantum well structuresoptimised for communication wavelength operation (2000)

InP based InGaAs/AlAs/AlAsSb coupled double quantum well (CDQW) structures have been developed for intersubband transition (ISBT) in the near-infrared region for operation at communication wavelength. ISBT in CDQWs is influenced by the well and barrier width, and by the carrier population in the ground subband state governed by the doping level or the carrier temperature. ISBT at 1.3 and 1.55 µm can be achieved in 1.0 nm AlAs barrier coupled InGaAs/AlAsSb DQW with well widths 2.1 nm doped to 1018 cm-3, and 2.7 nm doped to 1018 cm-3, respectively.
<title>High-performance linear detector modules</title> (2000)

To meet the demands for high performance infrared imaging systems AIM had developed a family of CMT detector modules with linear focal plane arrays, integrated detector cooler assemblies (IDCA), and command and control electronics (CCE). Common features of these modules are focal plane multiplexers with time delay and integration (TDI) function, pixel deselect, programmable gain for each line, bidirectional scan capability, partitioning and global gain select. The family of IDCA's consists either of single chip focal plane arrays (FPA) directly linked to a read out integrated multiplexer (ROIC) by solder bump technique, or one clip infrared detectors connected to one or more ROIC's using a multichip module (MCM) technique, dewars with optimized thermal heat load, coolers with integrated control electronics, and command and control electronics (CCE). The general design of these modules is outlined. Test results are shown.
Role of Viral Load in Heterosexual Transmission of Human Immunodeficiency Virus Type 1 by Blood Transfusion Recipients (1997)

Eighteen transfusion recipients infected with human immunodeficiency virus type 1 (HIV-1) were followed prospectively with their 19 long-term sexual partners from 1986 to 1993 in California, Florida, and New York. Follow-up included clinical, behavioral, immunologic, serologic, and virologic evaluations. Two partners were already infected when seen 18 and 34 months after sexual contact began following the infectious transfusion. Four of 17 initially seronegative partners seroconverted during 23 person-years of observation. The recipient's clinical status, mononuclear cell subset variations, and time trend in CD4+ counts had no association with transmission. Individual plasma HIV-1 ribonucleic acid (RNA) loads were stable during observation, and sexual transmission was not attributable to an upward trend or transient burst in viremia. However, recipients who transmitted HIV-1 to their sexual partners had higher mean viral RNA levels than did nontransmitting recipients (4.3 vs. 3.6 log10 copies/ml; p = 0.05). Although this series was small, the prospective observations suggest that viral load was the only characteristic in the recipient that contributed to heterosexual infectiousness.
Development of a Lower Extremity Rehabilitation Aid Utilizing an Insole-Integrated Load Sensor Matrix and a Sole-Embedded Measurement Node (2009)

Following an individual exercise program after a hip or a knee operation is crucially important as it enables the muscles of the operated leg to regain their strength and thereby support the recovery of the operated joint. Usually the patients have no assisting devices at home to help determine how much weight they put on the operated leg. Training with a scale helps, but in general, humans can not accurately estimate the amount of weight they put on the leg. To address this problem we have designed a lower extremity rehabilitation aid, which utilizes an insole-integrated capacitive load sensor matrix and a sole-embedded read-out electronics with wireless communication link. In this paper we present in detail the manufacturing process of the insole sensor. The placement of the electrodes, calibration, and user interfaces are also discussed. The system is found to be suitable for detecting too light and too heavy steps.
Singlet Energy Transfer in a 1-Naphthyl Methacrylate-9-Vinylanthracene Copolymer (1978)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSinglet Energy Transfer in a 1-Naphthyl Methacrylate-9-Vinylanthracene CopolymerJ. S. Aspler, C. E. Hoyle, and J. E. GuilletCite this: Macromolecules 1978, 11, 5, 925–929Publication Date (Print):September 1, 1978Publication History Published online1 May 2002Published inissue 1 September 1978https://pubs.acs.org/doi/10.1021/ma60065a017https://doi.org/10.1021/ma60065a017research-articleACS PublicationsRequest reuse permissionsArticle Views161Altmetric-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
PrP (58–93) peptide from unstructured N-terminal domain of human prion protein forms amyloid-like fibrillar structures in the presence of Zn2+ ions (2019)

Many transition metal ions modulate the aggregation of different amyloid peptides. Substoichiometric zinc concentrations can inhibit aggregation, while an excess of zinc can accelerate the formation of cytotoxic fibrils. In this study, we report the fibrillization of the octarepeat domain to amyloid-like structures. Interestingly, this self-assembling process occurred only in the presence of Zn(ii) ions. The formed peptide aggregates are able to bind amyloid specific dyes thioflavin T and Congo red. Atomic force microscopy and transmission electron microscopy revealed the formation of long, fibrillar structures. X-ray diffraction and Fourier transform infrared spectroscopy studies of the formed assemblies confirmed the presence of cross-β structure. Two-component analysis of synchrotron radiation SAXS data provided the evidence for a direct decrease in monomeric peptide species content and an increase in the fraction of aggregates as a function of Zn(ii) concentration. These results could shed light on Zn(ii) as a toxic agent and on the metal ion induced protein misfolding in prion diseases.
Light emitting nanofibers from functionalised para-quaterphenylenes: theory, synthesis and application (2008)

Growth of mutually aligned organic nanofibers from functionalised p-quaterphenylene has been demonstrated on a mica substrate via high vacuum sublimation. The fibers bridge the gap between microscopic and macroscopic dimensions according to their typical width in nanometer scale and length up to several hundred micrometers. They are an important step forward towards integrated nanoscopic optoelectronics since they proof that it is possible to generate ordered organic nanoaggregates from functionalised building blocks. These p-quaterphenylenes show well-organised growth with determinded morphology and emit intense blue light similar to the para-hexaphenylene.

Prior to their synthesis, more complex functionalised p-oligophenylenes have been designed using theoretical calculations to focus on the most promising molecular building blocks with respect to their functionality and NLO properties, leading to increased optical activity of the resulting nanofibers.
Organizational Context and Information Systems Success: A Contingency Approach (1990)

:Previous research suggests that organizational factors can be as important as individual factors for the success of information systems. This paper proposes a contingency approach relating selected organizational factors, namely organizational size, maturity, resources, time frame, and IS sophistication to user satisfaction and system usage. The model is tested through an empirical investigation of 34 small and medium-sized manufacturing firms. Data analysis results indicate that while organizational time frame and is sophistication have a direct effect upon satisfaction and usage, the effect of size, maturity, and resources is mediated by IS sophistication
Continuous leaky-wave scanning using periodically modulated spoof plasmonic waveguide (2016)

The plasmonic waveguide made of uniform corrugated metallic strip can support and guide spoof surface plasmon polaritons (SSPPs) with high confinements. Here, we propose periodically-modulated plasmonic waveguide composed of non-uniform corrugated metallic strip to convert SSPPs to radiating waves, in which the main beam of radiations can steer continuously as the frequency changes. To increase the radiation efficiency of the periodically-modulated plasmonic waveguide at the broadside, an asymmetrical plasmonic waveguide is further presented to reduce the reflections and realize continuous leaky-wave scanning. Both numerical simulations and experimental results show that the radiation efficiency can be improved greatly and the main beam of leaky-wave radiations can steer from the backward quadrant to the forward quadrant, passing through the broadside direction, which generally is difficult to be realized by the common leaky-wave antennas.
High Gradient Magnetic Separation of Pneumatic Conveyed Powder Products (2010)

The interfusion of ferromagnetic impurities such as metallic wear debris has been one of the problems in the manufacturing process of powder products. To remove such impurities, we developed high gradient magnetic separation system (HGMS) under dry process which has many advantages against conventional technology under wet process. The major problem of dry HGMS system was the blockage of magnetic filter caused by particle aggregation or deposition. In our previous study, we succeeded to reduce the blockage under dry condition by using prismatic-shaped filter whose slope was steeper than repose angle of the powder samples. In order to actualize the magnetic separation without blockage, we introduced the mechanism of pneumatic conveyance system of powders. The powder samples are dispersed adequately, and high separation efficiency can be obtained with developed system.
Preparation of geopolymeric materials from sewage sludge slag with special emphasis to the matrix compositions (2010)

Solidification of SSS (sewage sludge slag) has been carried out by the geopolymer binder technique at 80°C steam conditions mixed with CFA (coal fly ash). Geopolymer liquor was prepared by mixing Na-disilicate solution of 1.27 S.G. (specific gravity) and 10 M NaOH solution in 3:1 proportion. Obtained monolithic materials were subjected to physical measurements such as 3-point flexural strength, bulk density and expansion-shrinkage. Subsequently, matrix as well as filler chemical compositions were analyzed by SEM-EDX. Results showed SSS is an active filler similar to CFA and maximal strength was reached by blending SSS with CFA in 1:3 proportion. P2O5 and CaO components of SSS strongly contributed to the polycondensation of the geopolymer liquor other than theoretically expected Al2O3 and SiO2 components.
Architecting a Stochastic Computing Unit with Molecular Optical Devices (2018)

The increasing difficulty in leveraging CMOS scaling for improved performance requires exploring alternative technologies. A promising technique is to exploit the physical properties of devices to specialize certain computations. A recently proposed approach uses molecular-scale optical devices to construct a Resonance Energy based Sampling Unit (RSU) to accelerate sampling from parameterized probability distributions. Sampling is an important component of many algorithms, including statistical machine learning. This paper explores the relationship between application result quality and RSU design. The previously proposed RSU-G focuses on Gibbs sampling using Markov Chain Monte Carlo (MCMC) solvers for Markov Random Field (MRF) Bayesian Inference. By quantitatively analyzing the result quality across three computer vision applications, we find that the previously proposed RSU-G lacks both sufficient precision and dynamic range in key design parameters, which limits the overall result quality compared to software-only MCMC implementations. Naively scaling the problematic parameters to increase precision and dynamic range consumes too much area and power. Therefore, we introduce a new RSU-G microarchitecture that exploits an alternative approach to increase precision that incurs 1.27x power and equivalent area, while maintaining the significant speedups of the previous design and supporting a wider set of applications.
Echo peak shift spectroscopy of quantum well excitons (2007)

Three-pulse four-wave-mixing is used to observe the loss of optical phase memory in an inhomogeneous quantum well. The system's ability to form a photon echo is almost entirely lost due to spectral diffusion of excitons.
Coupled Dynamic Analysis and Equivalent Static Wind Loads on Buildings with Three-Dimensional Modes (2005)

Buildings with either complex geometric shapes or structural systems with noncoincident centers of mass and resistance, or both, may undergo three-dimensional (3D) coupled motions when exposed to spatiotemporally varying dynamic wind loads. To capture the dynamic load effects, this paper presents a framework for the analysis of 3D coupled dynamic response of buildings and modeling of the equivalent static wind loads (ESWLs). This framework takes into account the correlation among wind loads in principle directions and the intermodal coupling of modal response components. The wind loading input for this scheme may be derived either from multiple point synchronous scanning of pressures on building models or through high-frequency force balance (HFFB) measurements. The ESWL for a given peak response is expressed as a linear combination of the background and resonant loads, which respectively reflect the fluctuating wind load characteristics and inertial loads in fundamental modes of vibration. The nuances of utilizing HFFB measurements for buildings with 3D coupled mode shapes are elucidated with a focus on the evaluation of the generalized forces including mode shape corrections, the background and resonant responses, and the associated ESWLs. Utilizing a representative tall building with 3D mode shapes and closely spaced frequencies, the framework for the analysis of coupled dynamic load effects and modeling of 3D ESWLs is demonstrated.
A Frag Bag for Efficient Removal of Dislocated Nuclear Material (2017)

Dislocated nuclear material may be present in the vitreous cavity following complicated cataract surgery, closed globe injury, or spontaneous dislocation of the crystalline lens. The authors report herein a method to remove larger pieces of retained nuclear material during vitrectomy surgery with a retractable basket made from nitinol referred to as the "Frag Bag" (patent pending). Although originally designed for cystoscopic removal of kidney stones, this instrument fits easily through a 23-gauge vitrectomy port. The basket allows for retrieval of larger pieces of retained nuclear material with stabilization of the lens material in the mid-vitreous cavity and softening of the nuclear material to allow efficient and safe removal with the vitreous cutter, away from the retinal surface. Use of the Frag Bag may potentially improve the safety and efficiency of a pars plana lensectomy by obviating the need for a phacofragmatome and decreasing the number of times instruments are brought close to the retinal surface. [Ophthalmic Surg Lasers Imaging Retina. 2017;48:1006-1008.].
Semi-Supervised Tensor Factorization for Node Classification in Complex Social Networks (2019)

This paper proposes a method to guide tensor factorization, using class labels. Furthermore, it shows the advantages of using the proposed method in identifying nodes that play a special role in multi-relational networks, e.g. spammers. Most complex systems involve multiple types of relationships and interactions among entities. Combining information from different relationships may be crucial for various prediction tasks. Instead of creating distinct prediction models for each type of relationship, in this paper we present a tensor factorization approach based on RESCAL, which collectively exploits all existing relations. We extend RESCAL to produce a semi-supervised factorization method that combines a classification error term with the standard factor optimization process. The coupled optimization approach, models the tensorial data assimilating observed information from all the relations, while also taking into account classification performance. Our evaluation on real-world social network data shows that incorporating supervision, when available, leads to models that are more accurate.
Comb-type polymer-hybridized MXene nanosheets dispersible in arbitrary polar, nonpolar, and ionic solvents (2022)

Solution-based processing of two-dimensional (2D) nanomaterials is highly desirable, especially for the low-temperature large-area fabrication of flexible multifunctional devices. MXenes, an emerging family of 2D materials composed of transition metal carbides, carbonitrides, or nitrides, provide excellent electrical and electrochemical properties through aqueous processing. Here, we further expand the horizon of MXene processing by introducing a polymeric superdispersant for MXene nanosheets. Segmented anchor-spacer structures of a comb-type polymer, polycarboxylate ether (PCE), provide polymer grafting-like steric spacings over the van der Waals range of MXene surfaces, thereby reducing the colloidal interactions by the order of 10<sup>3</sup>, regardless of solvent. An unprecedented broad dispersibility window for Ti<sub>3</sub>C<sub>2</sub>T<i><sub>x</sub></i> MXene, covering polar, nonpolar, and even ionic solvents, was achieved. Furthermore, close PCE entanglements in MXene@PCE composite films resulted in highly robust properties upon prolonged mechanical and humidity stresses.
The time-dependent increase in the binding of benzo[a]pyrene to DNA through (+)-anti-benzo[a]pyrene-7,8-diol-9,10-epoxide in primary rat hepatocyte cultures results from induction of cytochrome P450IA1 by benzo[a]pyrene treatment (1992)

The proportion and amount of benzo[a]pyrene (B[a]P) that binds to DNA through the carcinogenic (+)-anti-benzo[a]pyrene-7,8-diol-9,10-epoxide [(+)-anti-BPDE] increases with time of exposure to B[a]P in cell cultures derived from a number of species. Pretreatment of primary rat hepatocyte cultures for 12 h with 1 microgram B[a]P/ml medium increased the subsequent metabolism of [3H]B[a]P by 47% and [3H]B[a]P-DNA binding by 53% compared with acetone-pretreated hepatocytes. The amount of (+)-anti-BPDE bound to DNA in the B[a]P-pretreated hepatocytes increased 175%. B[a]P pretreatment also increased DNA-binding 2-fold in hepatocytes treated with [3H]7,8-dihydroxy-7,8-dihydro-B[a]P but had no effect on DNA binding in cells treated with anti-B[a]P-7,8-diol-9,10-epoxide. Western blotting showed that cytochrome P450IA1, which was not detectable prior to B[a]P treatment, was selectively increased by B[a]P treatment. A monoclonal antibody that specifically inhibits cytochrome P450IA1 reduced the binding of B[a]P to DNA by greater than 90% in microsomal preparations from B[a]P-pretreated hepatocytes. These results indicate that the time-dependent increase in the formation of (+)-anti-BPDE-DNA adducts results from an increase in the amount and proportion of B[a]P metabolized to this ultimate carcinogen by P450IA1 that is induced by the B[a]P treatment. The importance of P450IA1 induction by the B[a]P for its activation to this ultimate carcinogenic metabolite suggests that long-term exposure of cells to B[a]P could result in activation of a higher proportion of the B[a]P to the carcinogenic (+)-anti-BPDE.