gebhart/patrepeval huggingface dataset:
Real-time adaptive filters for time-delay estimation (2003)

The development of real-time solutions for time-delay estimation problems is addressed. Two algorithms using adaptive digital filters are considered. The first uses the well-known LMs (least mean squares) algorithm, and the second is a novel algorithm using gradient adaptive lattice structures as prewhitening filters, followed by an LMS time-delay estimator. The filters are implemented on a TMS320-C25 system, and detailed performance comparisons are given.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Division unit with Newton-Raphson approximation and digit-by-digit refinement of the quotient (1994)

The advantages of the convergence with the square of the Newton-Raphson method are combined with the precision characteristics of digit-by-digit algorithms to obtain units for fast division that satisfy the IEEE 754 floating point standard requirements. A general design methodology that leads to a class of alternative architectures providing interesting performances for division is presented, together with one example of possible implementation. In particular, the proposed implementation achieves a speedup varying from 20% to about 30% in comparison with a previous architecture by Fandrianto, with a relatively small additional hardware cost if a multiplier is already available on the arithmetic unit.
Dynamic Interfacial Tension Behavior of Alkyl Amino Sulfonate in Crude Oil-Brine System (2013)

Abstract The compatibility of surfactants, a series of alkyl amino sulfonate containing various the length of alkyl chain (dodecyl, tetradecyl, hexadecyl and octadecyl, developed in our laboratory), with formation water matching the Xinjiang Oil Field reservoir water and the dynamic interfacial tensions (DIT) behaviors between the crude oil and the formation water for a number of alkaline flooding systems were measured. These surfactants are found to be well compatible with formation water up to 0.10 g L −1 surfactant concentration, especially Dodec-AS and Tetradec-AS show a good compatibility with formation water over the full range of surfactant concentration investigated (0.01–0.20 g L −1 ). All surfactants exhibit the dynamic interfacial tension behavior, and can reach and maintain low interfacial tension at very low concentration. The time for reaching the equilibrium DIT (DIT eq ) is longer for surfactant with stronger lipophilicity, e.g. octadecyl-AS. It is interestingly found that the ratio value between DIT eq and the tension at crude oil/reservoir water interface in the absence of surfactant is in the range of 10 −4 –10 −3 mN m −1 , accordingly based on which and the previous results, four surfactants individually or with other additives together may become potent candidates for enhanced oil recovery. Fortunately, the alkyl amino sulfonate combinational systems without alkali designed by our group can reduce the interfacial tension even to 10 −4 mN m −1 at very low surfactant concentration. These surfactants or their systems have characteristic of “Green”, in addition to the excellent salt-tolerance and the less expensive cost for enhanced oil recovery, and therefore they are good oil-displacing reagents for enhanced oil recovery.
Reconstitution and properties of homologous and chimeric HIV-1.HIV-2 p66.p51 reverse transcriptase. (1991)

Metal chelate affinity chromatography has been used to follow reconstitution of the 66- and 51-kDa human immunodeficiency (HIV)-1 and HIV-2 reverse transcriptase (RT) subunits into heterodimer, as well as chimeric enzymes comprised of heterologous subunits. By adding a small N-terminal polyhistidine extension to the 51-kDa subunit of either enzyme, reconstituted RT could be recovered from a cell lysate by chromatography on Ni(2+)-nitrilotriacetic acid-Sepharose. Homologous RT subunits rapidly associated to form the respective heterodimers (1-p66.1-p51 and 2-p66.2-p51) when bacterial lysates containing the individual components were mixed. Under the same conditions, association of p66 HIV-2 and p51 HIV-1 RT was inefficient and could be improved slightly by prolonged incubation of the respective p66 and p51 subunits. In contrast, HIV-1 p66 RT rapidly associated with the 51-kDa subunit of the HIV-2 enzyme. RNA-dependent DNA polymerase activity was associated with all reconstituted enzymes, and the response of each chimeric RT to an inhibitor selective for the HIV-1 enzyme indicated that sensitivity to inhibition was determined by the source of its 66-kDa subunit.
Fast annotation and modeling with a single-point laser range finder (2008)

This paper presents methodology for integrating a small, single-point laser range finder into a wearable augmented reality system. We first present a way of creating object-aligned annotations with very little user effort. Second, we describe techniques to segment and pop-up foreground objects. Finally, we introduce a method using the laser range finder to incrementally build 3D panoramas from a fixed observerpsilas location. To build a 3D panorama semi-automatically, we track the systempsilas orientation and use the sparse range data acquired as the user looks around in conjunction with real-time image processing to construct geometry around the userpsilas position. Using full 3D panoramic geometry, it is possible for new virtual objects to be placed in the scene with proper lighting and occlusion by real world objects, which increases the expressivity of the AR experience.
A Study Of Re-sampling Methods With Regression Modeling (2002)

There are an overwhelming number of applications of data mining that result in the use of regression models. For example, predicting the propensity of a customer to default on a credit card, or the likelihood that a prospect will respond to a direct marketing campaign. Unfortunately, the implementation constraints for many such useful applications restrict the type of predictive method used to simple linear or logistic regression. While the more sophisticated techniques (e.g New-al Nets [1]) have built in processes that make the resulting model the most predictive and robust, developing a robust linear/logistic regression model requires much care with an experienced hand. In business settings, most predictive models are built on a modeling data set and independently validated on a validation dataset. Often times, the modeling and validation data set have differences that cause the modeler to question whether the model will perform well in the future. This paper explores the use of resampling methods in the model building steps to help to build an optimal sample that not only fits both the modeling and validation sample well, but also holds up robustly. The resampling allows many more sample datasets to be considered and eliminates overfitting of the model sample. 1 Business application and outline of paper The business application of this research is derived from the prediction of a 0/1 indicator as would be generated to reflect response to a marketing campaign or risk on a financial vehicle such as an auto loan or credit card. Although we have kept the variable distributions normal and simple, the correlation structure with © 2002 WIT Press, Ashurst Lodge, Southampton, SO40 7AA, UK. All rights reserved. Web: www.witpress.com Email witpress@witpress.com Paper from: Data Mining III, A Zanasi, CA Brebbia, NFF Ebecken & P Melli (Editors). ISBN 1-85312-925-9
Analysis on Effective Evaluation Index of Science and Technology Information Publications (2009)

According to the characteristics of publications of scientific and technical information,the author put forward the evaluation index which fit the development of publications of scientific and technical information based on evaluating a serial of general evaluating index.Also the author gave some suggestions in practice as references in work of related department.
Troidine Swallowtails (Lepidoptera: Papilionidae) in Southeastern Brazil: Natural History and Foodplant Relationships (1981)

Five species of troidine swallowtails, Parides proneus, P. bunichus, P. agavus, P. anchises nephalion, and BattuspolydamaSf sympatric in central S?o Paulo state, southeastern Brazil, differentially utilize the available Aristolochia hostplants. All early stages differ morphologically, with the possible exception of eggs of P. bunichus and P. agavus. In two study sites, the adult populations fluctuated greatly and disharmoniously in approximate two-month cycles. Individuals moved an average of near 100 m and up to 1.3 km between successive recaptures, probably in search of flower resources. Adult lifespans in the field and laboratory averaged less than two weeks, with a majority of field-recaptured individuals passing through one of the six major wing wear classes per week. Laboratory cultures, maintained in a walk-in growth chamber, were used to investigate larval and adult behavior, pupal diapause, oviposition, and hostplant palatability in the five species of butterflies, with relation to the six potential hostplants sympatric in the field.
Cytochrome P-450—Catalyzed Formation of Δ<sup>4</sup>-VPA, a Toxic Metabolite of Valproic Acid (1987)

Liver damage induced by the antiepileptic drug valproic acid (VPA) is believed to be mediated by an unsaturated metabolite of the drug, delta 4-VPA. In studies of the biological origin of this hepatotoxic compound, it was found that liver microsomes from phenobarbital-treated rats catalyzed the desaturation of VPA to delta 4-VPA. Indirect evidence suggested that cytochrome P-450 was the responsible enzyme, a conclusion that was verified by studies with a purified and reconstituted form of the hemoprotein, which catalyzed the oxidation of VPA to 4- and 5-hydroxyvalproic acid and to delta 4-VPA. Desaturation of a nonactivated alkyl substituent represents a novel metabolic function of cytochrome P-450 and probably proceeds via the conversion of substrate to a transient free radical intermediate, which partitions between recombination (alcohol formation) and elimination (olefin production) pathways. These findings have broad implications with respect to the metabolic generation of olefins and may explain the increased hepatotoxic potential of VPA when it is administered in combination with potent enzyme-inducing anticonvulsants such as phenobarbital.
The dephosphorylation of phosphoglucomutase by nucleophilic reagents. (1975)

The phosphoryl group on the serine residue at the active site of phosphoglucomutase is presumed to undergo nucleophilic attack by the monophosphate substrates glucose 1- and glucose 6-phosphate to form glucose 1,6-diphosphate. Fluoride, hydroxylamine, and several thiol compounds have now been shown to serve as effective nucleophiles toward the active phosphate and result in the dephosphorylation of phosphoglucomutase. The more extensively studied nucleophiles, cysteine, hydroxylamine, and fluoride, are effective at a concentration as low as 1 mM with a relative reactivity of 40, 2, and 1, respectively. The reaction proceeds as long as the catalytic activity of the enzyme is maintained. Inactivation of the enzyme abolishes dephosphorylation by all nucleophilic reagents thus far studied. The dephosphorylation reaction shows optimal activity of pH 6.5. The rate of dephosphorylation exhibits saturation kinetics. With fluoride the Km is 534 mM. Dephosphorylation by fluoride is stimulated by some but not all bivalent cations. Cu+ and Co2+ are the most effective. Cu2+ not only augments the reaction with fluoride but also facilitates a nucleophilic attack by water, in the absence of the halogen, to yield inorganic phosphate. No augmentation of the rate of dephosphorylation by bivalent cations can be elicited with either cysteine or hydroxylamine. The products of the fluoride reaction are phosphorofluoridate, a small but variable amount of inorganic phosphate, and a fully active dephosphoenzyme. By constrast, cysteine and hydroxylamine yield inorganic phosphate and a partially inactive enzyme. The dephosphorylation rate varies with temperature. Arrhenius plots for the fluoride reaction reveal two distinct slopes. The heat of activation between 5-37 degrees was found to be 10.2 Cal per mol. Between 0-5 degrees, however, it was considerably greater amounting to 24.3 Cal per mol.
Partial pressure dependency of <sup>17</sup> O/ <sup>16</sup> O and <sup>18</sup> O/ <sup>16</sup> O of molecular oxygen in the mass spectrometer (2003)

A method to determine both (17)O/(16)O and (18)O/(16)O ratios for molecular oxygen with high precision by direct introduction into the mass spectrometer without gas separation is presented. Because both (17)O/(16)O and (18)O/(16)O in mixed gases have good linear correlations with their mixing ratios, these isotopic compositions can be determined without a gas-separation procedure by calibration using prepared standard gases with variable mixed ratios and by monitoring the amounts of fragment ions. Analytical precision for delta(17)O and delta(18)O of 45 and 7 per meg, respectively, were obtained. The observed partial pressure dependency of isotopic composition may be caused by isotope fractionation during admission from the ionization chamber into the flight tube of the mass spectrometer.
Octane Numbers of Ethanol-Gasoline Blends: Measurements and Novel Estimation Method from Molar Composition (2012)

<div class="section abstract"><div class="htmlview paragraph">Ethanol has a high octane rating and can be added to gasoline to produce high octane fuel blends. Understanding the octane increase with ethanol blending is of great fundamental and practical importance. Potential issues with fuel flow rate and fuel vaporization have led to questions of the accuracy of octane measurements for ethanol-gasoline blends with moderate to high ethanol content (e.g., E20-E85) using the Cooperative Fuel Research (CFR™) engine. The nonlinearity of octane ratings with volumetric ethanol content makes it difficult to assess the accuracy of such measurements.</div><div class="htmlview paragraph">In the present study, Research Octane Number (RON) and Motor Octane Number (MON) were measured for a matrix of ethanol-gasoline blends spanning a wide range of ethanol content (E0, E10, E20, E30, E50, E75) in a set of gasoline blendstocks spanning a range of RON values (82, 88, 92, and 95). Octane ratings for neat ethanol, denatured ethanol, and hydrous ethanol were also measured. One set of measurements was conducted using a CFR™ engine equipped with manufacturer-supplied enhancements (GE Energy Waukesha XCP-OA™ digital octane panel) for digital knock measurement and precise control of temperatures and fuel flow. A second set of measurements was conducted at a separate laboratory with a CFR™ engine equipped with an adjustable-orifice fuel jet. Both approaches address fuel flow issues at high ethanol concentrations.</div><div class="htmlview paragraph">A linear molar octane blending model was found to describe most of the nonlinearity in the RON and MON data, but measured values were still somewhat greater than predicted. Deviations from the linear model can be described by a term with 2nd-order dependence on ethanol content with a single scaling parameter (P<sub>g</sub>). The parameter P<sub>g</sub> can be estimated from the measured octane number of a 50:50 molar alcohol-gasoline blend and the octane numbers of the gasoline (ON<sub>g</sub>) and alcohol (ON<sub>a</sub>). The octane number of any ethanol-gasoline blend (ON<sub>b</sub>) with that blendstock can then be estimated (within 1 ON) from the molar fraction of the alcohol (x<sub>a</sub>) using the following expression: ON<sub>b</sub> = (1-x<sub>a</sub>)ON<sub>g</sub> + x<sub>a</sub>ON<sub>a</sub> + P<sub>g</sub> x<sub>a</sub> (1-x<sub>a</sub>)(ON<sub>a</sub> - ON<sub>g</sub>).</div><div class="htmlview paragraph">This study supports a companion paper (SAE 2012-01-1277) in which a state-of-the-art single-cylinder engine equipped with multiple fuel injection systems was used to evaluate the knock-limited performance of the ethanol-gasoline blends described herein and to evaluate the relevance of octane ratings and heat of vaporization as predictors of this performance.</div></div>
The cellular retinoic acid binding protein I is dispensable. (1994)

The cellular retinoic acid binding proteins I and II (CRABPI and CRABPII) bind retinoic acid with high affinity, exhibit distinct patterns of expression during embryonic development, and are thought to play important roles in the RA signaling pathway. We have generated a targeted mutation of the CRABPI gene using the "hit-and-run" strategy and shown that it prevents the production of a functional CRABPI protein. Homozygous mutant mice were normal, indicating that CRABPI does not play a crucial role in the RA signaling pathway.
ISSUES AND IMAGES (1983)

The research question examined is whether reliance on television makes a difference in the way people make voting decisions. Considerable support was shown for the hypothesis that television reliant voters use candidate image characteristics in making their voting choices more than do the newspaper reliant. Little support was given to a second hypothesis that the perceptions of candidates' stands on issues will play a stronger role among the newspaper reliant. The generally strong image findings did not obtain for the judgments of the third candidate, John Anderson, nor among the voters deciding early in the campaign. Possible reasons for these exceptions are discussed. It is also shown that the media reliance image findings were not replicated by differences in the relative use of public affairs content in the two media, thus indicating the need for research attention to the meaning of television and newspaper reliance.
Effect of Potential Function on Molecular Dynamics Simulation of Copper Processing (2009)

In nanometric cutting process, the actual material removal can take place at atomic level, which makes it difficult or impossible to observe the machining phenomena and measure the cutting parameters in experiments. However, it is crucial to investigate the cutting process in nanoscale. In this study, the molecular dynamics (MD) method is employed to model and simulate the process of cutting monocrystalline copper. The two-body Morse potential and the many-body EAM potential are used for the atoms interaction in the workpiece to study the effect of different potential function on the simulation results. It is found that there are no obvious differences in the chip formation between Morse and EAM potential, but the Morse potential results in higher potential energy and more chips generated in the cutting process.
COX-2 expression in malignant melanoma: a novel prognostic marker? (2009)

Several studies illustrated considerably elevated levels of cyclooxygenase-2 (COX-2) protein in various types of human cancer including malignant melanoma. Recently, it was reported that COX-2 is strongly expressed in malignant melanoma and may be correlated with the development and progression of disease. In contrast, other groups did not detect COX-2 protein in primary melanoma cells but did in infiltrating inflammatory cells or metastases. However, there are no reports about patterns or alterations of COX-2 expression in melanoma cells during disease progression or of a correlation between COX-2 expression and overall survival. The aim of this study was to investigate whether there is a correlation between expression of COX-2 protein and disease prognosis in malignant melanoma. We therefore analyzed the expression of COX-2 protein by immunohistochemistry in 101 primary malignant melanomas and 28 metastases and correlated our data with Breslow tumor thickness, Clark levels, different melanoma subtypes, metastases, and overall survival. We detected a strong COX-2 expression in 95% of all primary melanomas, primarily restricted to melanoma cells as shown by various immunohistochemical methods. Levels of COX-2 expression in primary melanoma and corresponding metastases remained stable. A significant correlation between immunohistochemical staining intensity and tumor thickness was demonstrated. Furthermore, Kaplan-Meier curves illustrated a significant correlation between staining intensity and disease-specific survival. Our findings emphasize that the COX-2 protein might be a novel prognostic marker. Owing to its strong expression in melanoma cells it might also be a reasonable therapeutic target.
The Need for Self Regulation and Alternative Dispute Resolution to Moderate Consumer Perceptions of Perceived Risk with Internet Gambling (2012)

The legislative gaps in international eCommerce and specifically in the gambling industry mean that many consumers face the market condition of caveat emptor (let the buyer beware). In terms of consumer psychology, caveat emptor increases consumer perceptions of risk and slows the diffusion of Internet gambling. This paper discusses the specific risks associated with Internet gambling and presents an industry structure designed to off-set consumer perceptions of perceived risk through industry self regulation and alternative dispute management techniques.
On indexing line segments (1990)

In several image applications, it is necessary to retrieve specific line segments born a potentially very large set. In this paper, we consider the problem of indexing straight line segments to enable efficient retrieval of all line segments that (i) go through a specified point, or (ii) intersect a specified line segment. We propose a data organization, based on the Hough transform, that can be used to solve both retrieval problems efficiently. In addition, the proposed structure can be used for approximate retrievals, finding all line segments that pass close to a specified point. We show, through analysis and experiment, that the proposed technique always does as well as or better than retrieval based on minimum bounding rectangles or line segment end-points.
Signal Processing Using Chaotic Dynamics (2009)

CDMA は信号の時間・周波数の２軸に加えて+1,−1 の２値の拡散符号という第３の独立軸を設けることでTDMA, FDMA に代わり多重化を達成する第３の多元接続方式である．“ディジタル通信”でアナログ量が関与するのは，雑音の混入が不可避な，ヒトとかかわる入出力部分と通信路の前後に限定され，これらの部分で信号処理は重要な役割を果たす．本論文ではHeisenberg の不確定原理，シャノンの標本化定理，2WT 定理等の通信の基本原理に立ち戻り, 拡散符号の代数的対確率的生成法，i.i.d. 対マルコフ符号, ナイキスト条件の要否, 直交波形対擬似直交波形，Gabor 空間の方形排反分割対重畳分割等の対比の観点からガウス振幅の搬送波及びカオスで生成された拡散符号によるCDMA の有用性を論じる．
Effects of Annealing and Doping on Nanostructured Bismuth Telluride Thick Films (2008)

Bismuth telluride is the state-of-the-art thermoelectric (TE) material for cooling applications with a figure of merit of ∼1 at 300 K. There is a need for the development of TE materials based on the concept of thick films for miniaturized devices due to mechanical and manufacturing constraints for the thermoelement dimensions. We reported earlier a method for the fabrication of high-quality nanostructured bismuth telluride thick films with thickness from 100 to 350 µm based on electrochemical deposition techniques. In this paper, annealing is performed to further improve the TE performance of the nanostructured bismuth telluride thick films and n/p-type solid solutions are successfully fabricated by doping Se and Sb, respectively. The conditions for both annealing and doping for the thick films are investigated, and the effects of annealing and doping on morphology, crystalline phase, grain size, Seebeck coefficient, homogeneity, electrical conductivity, and power factor of the bismuth telluride thick films have been studied.