gebhart/patrepeval huggingface dataset:
Single-mode Nd/sup 3+/-doped graded-index polymer waveguide amplifier (1993)

The first graded index (GRIN) polymer waveguide amplifier working at 1.06 mu m wavelength has been realized, using a Nd/sup 3+/: photolime gel material combination. Throughput intensity of 3.8 mW at 1.06 mu m, corresponding to 8.5 dB gain, was observed when employing a 40 mW pumping laser beam operating at 790 nm. The gain medium is a 2.2 cm waveguide active region with Nd/sup 3+/ concentration of 1.03*10/sup 20//cm/sup 3/. The GRIN characteristic of the photolime gel thin film provides a universal means for implementing polymer-based photonic integrated circuits (PICs) on any substrate of interest.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Code sharing among states for stack-caching interpreter (2004)

Interpretation has salient merits of simplicity, portability and small footprint but comes with a price of poor performance. Stack caching is a technique to build a high-performance interpreter by keeping source and destination operands of instructions in registers so as to reduce memory accesses involved during interpretation. One drawback of stack caching is that an instruction may have multiple ways to perform interpretation depending on which registers source operands reside in, resulting in code explosion as well as deterioration of code maintainability. This paper presents a code sharing mechanism that achieves performance as efficient as the stack-caching interpreter and in the meantime keeps the code size as compact as general threaded interpreters. Our results show that our approach outperforms a threaded interpreter by an average of 13.6% and the code size increases by only 1KB (~3%).
A compressed sensing method with analytical results for lidar feature classification (2011)

We present an innovative way to autonomously classify LiDAR points into bare earth, building, vegetation, and other categories. One desirable product of LiDAR data is the automatic classification of the points in the scene. Our algorithm automatically classifies scene points using Compressed Sensing Methods via Orthogonal Matching Pursuit algorithms utilizing a generalized K-Means clustering algorithm to extract buildings and foliage from a Digital Surface Models (DSM). This technology reduces manual editing while being cost effective for large scale automated global scene modeling. Quantitative analyses are provided using Receiver Operating Characteristics (ROC) curves to show Probability of Detection and False Alarm of buildings vs. vegetation classification. Histograms are shown with sample size metrics. Our inpainting algorithms then fill the voids where buildings and vegetation were removed, utilizing Computational Fluid Dynamics (CFD) techniques and Partial Differential Equations (PDE) to create an accurate Digital Terrain Model (DTM) [6]. Inpainting preserves building height contour consistency and edge sharpness of identified inpainted regions. Qualitative results illustrate other benefits such as Terrain Inpainting's unique ability to minimize or eliminate undesirable terrain data artifacts.
cis–trans Reversible Photoisomerization of an Amphiphilic Azobenzene Derivative in Its Pure LB Film Prepared as Polyion Complexes with Polyallylamine (1988)

Abstract By using polyallylamine (PAA) for the aqueous subphase, the pure LB films of an azobenzene derivative with a long alkyl-chain showed reversible cis–trans photoisomerization due to the relatively large cross section of the molecule determined by the surface density of the ammonium cations of protonated PAA.
A Highly Efficient Mononuclear Iridium Complex Photocatalyst for CO<sub>2</sub> Reduction under Visible Light (2012)

Mononuclear iridium(III) terpyridine (tpy) 2-phenylpyridine (ppy) complexes [Ir(tpy)(R-ppy)Cl] (R=H, Me, CF3) can act as efficient and selective CO2 reduction photocatalysts. The reaction is driven using visible light in a homogeneous solution, and even in a H2O mixed solution. The most efficient photocatalyst is [Ir(tpy)(Me-ppy)Cl], for which the turnover in CO was over 50 and the quantum yield was 0.21 at 480 nm.
Hairy-related Transcription Factors Inhibit GATA-dependent Cardiac Gene Expression through a Signal-responsive Mechanism (2004)

Combinatorial actions of transcription factors in multiprotein complexes dictate gene expression profiles in cardiac development and disease. The Hairy-related transcription factor (HRT) family of basic helix-loop-helix proteins is composed of transcriptional repressors highly expressed in the cardiovascular system. However, it has remained unclear whether HRT proteins modulate gene expression driven by cardiac transcriptional activators. Here, we have shown that HRT proteins inhibit cardiac gene transcription by interfering with GATA transcription factors that are implicated in cardiac development and hypertrophy. HRT proteins inhibited GATA-dependent transcriptional activation of cardiac gene promoters such as the atrial natriuretic factor (ANF) promoter. Adenovirus-mediated expression of Hrt2 suppressed mRNA expression of ANF and other cardiac-specific genes in cultured cardiomyocytes. Among various signaling molecules implicated in cardiomyocyte growth, constitutively active Akt1/protein kinase B alpha relieved Hrt2-mediated inhibition of GATA-dependent transcription. HRT proteins physically interacted with GATA proteins, and the basic domain of HRT was critical for physical association as well as transcriptional inhibition. These results suggest that HRT proteins may regulate specific sets of cardiac genes by modulating the function of GATA proteins and other cardiac transcriptional activators in a signal-dependent manner.
A new spectrum extension method that maximizes the multistep minimum prediction error-generalization of the maximum entropy concept (1992)

Given (n+1) consecutive autocorrelations of a stationary discrete-time stochastic process, how this finite sequence is extended so that the power spectral density associated with the resulting infinite sequence of correlations is nonnegative everywhere is discussed. It is well known that when the Hermitian Toeplitz matrix generated from the given autocorrelations is positive definite, the problem has an infinite number of solutions and the particular solution that maximizes the entropy functional results in a stable all-pole model of order n. Since maximization of the entropy functional is equivalent to maximization of the minimum mean-square error associated with one-step predictors, the problem of obtaining admissible extensions that maximize the minimum mean-square error associated with k-step (k<or=n) predictors, that are compatible with the given autocorrelations, is studied. It is shown that the resulting spectrum corresponds to that of a stable autoregressive moving average (ARMA) (n, k-1) process.<<ETX>>
Dopamine as A Robust Anchor to Immobilize Functional Molecules on the Iron Oxide Shell of Magnetic Nanoparticles (2004)

We report on the use of dopamine (DA) as a robust molecular anchor to link functional molecules to the iron oxide shell of magnetic nanoparticles. Using nitrilotriacetic acid (NTA) as the functional molecule, we created a system with an M/Fe2O3-DA-NTA (M = Co or SmCo5.2) nanostructure, which possesses high stability and specificity for separating histidine-tagged proteins. The well-established biocompatibility of iron oxide and the robust covalent bonds between DA and Fe2O3 render this strategy attractive for constructing biofunctional magnetic nanoparticles containing iron oxide.
Robust estimation of dense 3D stacking velocities from automated picking (1999)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 1999Robust estimation of dense 3D stacking velocities from automated pickingAuthors: Frank AdlerSimon BrandwoodFrank AdlerCGG London UK and Simon BrandwoodCGG London UKhttps://doi.org/10.1190/1.1820709 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1190/1.1820709FiguresReferencesRelatedDetailsCited byMachine learning-based residual moveout pickingFarhad Bazargani, Wenjun Zhang, Anu Chandran, Zaifeng Liu, and Harry Rynja15 August 2022A variational approach for picking optimal surfaces from semblance-like panelsLuke Decker and Sergey Fomel11 April 2022 | GEOPHYSICS, Vol. 87, No. 3A continuation approach for avoiding local minima in seismic velocity pickingLuke Decker and Sergey Fomel1 September 2021A variational method for picking velocity surfaces from semblance scansLuke Decker and Sergey Fomel30 September 2020Automated static and moveout corrections of high‐resolution seismic data from the Baltic Sea29 October 2019 | Near Surface Geophysics, Vol. 18, No. 1Automatic nonhyperbolic velocity analysis by polynomial chaos expansionMostafa Abbasi and Ali Gholami15 November 2018 | GEOPHYSICS, Vol. 83, No. 6Automatic stacking-velocity estimation using similarity-weighted clustering15 December 2017 | Geophysical Prospecting, Vol. 66, No. 4A fast algorithm for 3D azimuthally anisotropic velocity scan11 November 2014 | Geophysical Prospecting, Vol. 63, No. 2Wavelet balancing for residual moveoutsWilliam S. Harlan24 October 2014 | GEOPHYSICS, Vol. 79, No. 6A fast algorithm for 3D azimuthally anisotropic velocity scanJingwei Hu, Sergey Fomel, and Lexing Ying19 August 2013Velocity-independent time-domain seismic imaging using local event slopesSergey Fomel30 March 2007 | GEOPHYSICS, Vol. 72, No. 3High‐order RMO picking using uncorrelated parametersR. Siliqi, P. Herrmann, A. Prescott, and L. Capar14 September 2007Velocity‐independent time‐domain seismic imaging using local event slopesSergey Fomel7 December 2005Velocity as an attribute: continuous velocity estimation from 3D preSDM CRP gathersFirst Break, Vol. 19, No. 1 SEG Technical Program Expanded Abstracts 1999ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 1999 Pages: 2061 publication data© 1999 Copyright © 1999 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 04 Jan 2005 CITATION INFORMATION Frank Adler and Simon Brandwood, (1999), "Robust estimation of dense 3D stacking velocities from automated picking," SEG Technical Program Expanded Abstracts : 1162-1165. https://doi.org/10.1190/1.1820709 Plain-Language Summary PDF DownloadLoading ...
The occurrence and the crystal structure of <i>α"</i> -iron nitride; a new type of interstitial alloy formed during the tempering of nitrogen-martensite (1951)

Abstract A new iron-nitrogen phase, α'', occurs as an intermediate in the decomposition nitrogen-martensite (α') → Fe4N(γ'). Although it is a transition phase, α'' is relatively stable and has a structural unit which contains eight (2 x 2 x 2) distorted and expanded body-centred tetragonal units of the original martensite structure. The contents of the unit cell, which has dimensions a ═ 5⋅72, c ═ 6⋅29 Å, c/a ═ 1⋅10, are ideally Fe16N2 with the atoms occupying special positions of space group I4/mmm. The iron atoms are displaced from sites occupied in the ferrite lattice by the presence of nitrogen atoms which occupy one twenty-fourth of the number of octahedral interstices in a completely ordered manner. Up to one-half of the number of nitrogen-atom sites may be vacant. The structure is also simply related to that of Fe4N, and the mechanisms of its formation from nitrogen-martensite and of its subsequent transformation to Fe4N are discussed. For a case where solute atoms are separated by such relatively large distances, the ordering observed in α'' -iron nitride appears to be unique. The unknown nitride reported by previous workers to be precipitated from nitrogen-ferrite is identified as the α'' -phase. Its relationship with the transition phase of tempered carbon-martensite and the technical significance of its existence are mentioned.
Fast Joint Estimation of Silhouettes and Dense 3D Geometry from Multiple Images (2011)

We propose a probabilistic formulation of joint silhouette extraction and 3D reconstruction given a series of calibrated 2D images. Instead of segmenting each image separately in order to construct a 3D surface consistent with the estimated silhouettes, we compute the most probable 3D shape that gives rise to the observed color information. The probabilistic framework, based on Bayesian inference, enables robust 3D reconstruction by optimally taking into account the contribution of all views. We solve the arising maximum a posteriori shape inference in a globally optimal manner by convex relaxation techniques in a spatially continuous representation. For an interactively provided user input in the form of scribbles specifying foreground and background regions, we build corresponding color distributions as multivariate Gaussians and find a volume occupancy that best fits to this data in a variational sense. Compared to classical methods for silhouette-based multiview reconstruction, the proposed approach does not depend on initialization and enjoys significant resilience to violations of the model assumptions due to background clutter, specular reflections, and camera sensor perturbations. In experiments on several real-world data sets, we show that exploiting a silhouette coherency criterion in a multiview setting allows for dramatic improvements of silhouette quality over independent 2D segmentations without any significant increase of computational efforts. This results in more accurate visual hull estimation, needed by a multitude of image-based modeling approaches. We made use of recent advances in parallel computing with a GPU implementation of the proposed method generating reconstructions on volume grids of more than 20 million voxels in up to 4.41 seconds.
Reconciling the Overlay and Underlay Tussle (2013)

In the presence of multiple overlays and underlays, the emerging global network behavior is the result of interactions of self-serving overlay routing decisions and independent underlay management actions. It is crucial for network operators, service, and content providers to have a good grasp of the underlying principles in order to better design and manage current and future networks and services. In this paper, we describe special game scenarios wherein the interaction of noncooperative overlays and underlays in multidomain networks can result in an operable global configuration in linear time and the overall convergence is polynomial in the unweighed case. For weighted games, we find that weighted Shapley potential can achieve linear time convergence to an operable state. Furthermore, we analyze the interaction of overlays and underlays as a two-stage congestion game and recommend simple operational guidelines to ensure global stability. We further explore the use of Shapley value as an enabler of mutual cooperation in an otherwise competitive environment. Our simulation results confirm our findings and demonstrate its effectiveness in general networks.
Twin-slope method of measurement of specific heat and coating absorptance of solid materials (1982)

A twin-slope method has been developed to measure the specific heat and coating absorptance of solid materials. The method is comprised of measuring the temperature–time history of the sample when irradiated by a lamp that is commonly used in radiometry as the irradiance standard. Then by monitoring the heating and cooling rates of the sample at the identical sample temperature, the heat loss coefficient can be canceled out in the analysis. The method permits measurements of these properties independent of the loss coefficient, which also enables the test to be made even in a nonevacuated environment. As a demonstration to show the feasibility of the method, a copper and a paint sample are used for tests. The results are found to be good. A critique is also given in the paper to reveal the true strength and weakness of the method.
Aplicaciones de los modelos predictivos en la industria alimentaria: casos de estudio sobre Listeria monocytogenes (2005)

Nowadays, the trends towards more innovative food processes systems as well as more efficient quality controls in food industry, impose the creation of new tools that support more safety of the food products among consumers. Application of predictive models in the food field, allow us to know with more accuracy, the quality and microbiological safety of a food product with regard to a specific pathogen or spoilage flora that could be present in a food. Listeria monocytogenes is a pathogenic microorganism known as an emergent hazard in food industry due to its ubiquity and psychotropic nature, and its great resistance at limiting conditions that may be present in a food product. In this work, a tertiary model, named PMP (Pathogen Modelling Program) was applied in order to determine the behaviour of L. monocytogenes in different food products under various conditions. Predictions obtained on packaged orange juice at 12.5° C and pH 4.2, indicate that this microorganism can survive, reaching a 3 log (ufc/ml) reduction in almost 45 days of storage time being therefore, a quite safe food. By other side, the lag phase duration (65.1 h) and the generation time (9.8 h) were calculated on modified atmosphere packaged spinaches by means of a predictive growth model. Since the generated data, the shelf-life of the product in which the non-growth of the pathogen until reaching risks levels, could be ensured. Finally, an inactivation model was used to determine the D-value (time necessary to reach 1-log reduction), at 58° C on beef and this value was 432 seg., so it was shown the fast elimination of the microorganism in these conditions. In conclusion, the applied models can be useful tools to predict the behaviour of L. monocytogenes in the food products, once the formulation is known. These findings are very important in order to innovate through the design of new products, or improving the conditions of conservation of food-made products to assure their safety.
Dependability of embedded networks &#x2014; A case study with system diagnosis of CAN protocol (2009)

In this paper, we present the development of a CAN protocol simulator. This simulator is expected to help analyzing faulty behavior of the CAN protocol in order to develop diagnosis strategies.
Current-Mode Power Converter for Radiation Control in DBD Excimer Lamps (2011)

A pulsed current-mode converter specifically designed for the supply of dielectric barrier discharge excimer lamps is proposed in this paper. The power supply structure is defined on the basis of causality criteria that are justified by the structure of the lamp model. The converter operation is studied, and its design criteria are established using state-plane analysis. This converter, operating in discontinuous conduction mode, controls directly both the amplitude and the duration of the emitted ultraviolet (UV) pulses. Experimentally, the UV radiation is demonstrated to be proportional to the current injected into the gas, and the degrees of freedom offered by the control of the supply are shown to be very efficient for the active control of the UV power.
Launch Vehicle Recovery and Reuse (2015)

This paper briefly reviews the history of Reusable Launch Vehicle development and recommended reuse techniques based on the lessons learned from those efforts. The paper considers a range of techniques for recovery and reuse of launch vehicles. Launch vehicle component cost and weight by major element are also discussed as a method of determining cost/benefit of reuse. Of particular interest are non-propulsive approaches as economic alternatives to propulsive approaches. These may include aerodynamic decelerators (including inflatable decelerators and parachutes) and terminal landing approaches including impact attenuators and mid-air recovery techniques. Utilizing a Hypersonic Inflatable Aerodynamic Decelerator (HIAD) for atmospheric entry should have considerable mass-fraction advantage over other technologies. Mid-air recovery (MAR) is presented as an innovative approach for precision landing of impact susceptible components such as rocket engines while minimizing contamination by avoiding salt water immersion. The economics of reuse is presented as a basis for recommendations for cost effective reuse and recovery of booster components.
Fatty acid‐specific, regiospecific, and stereospecific hydroxylation by cytochrome P450 (CYP152B1) from <i>Sphingomonas paucimobilis</i>: Substrate structure required for α‐hydroxylation (2000)

Fatty acid alpha-hydroxylase from Sphingomonas paucimobilis is an unusual cytochrome P450 enzyme that hydroxylates the alpha-carbon of fatty acids in the presence of H2O2. Herein, we describe our investigation concerning the utilization of various substrates and the optical configuration of the alpha-hydroxyl product using a recombinant form of this enzyme. This enzyme can metabolize saturated fatty acids with carbon chain lengths of more than 10. The Km value for pentadecanoic acid (C15) was the smallest among the saturated fatty acids tested (C10-C18) and that for myristic acid (C14) showed similar enzyme kinetics to those seen for C15. As shorter or longer carbon chain lengths were used, Km values increased. The turnover numbers for fatty acids with carbon chain lengths of more than 11 were of the same order of magnitude (10(3) min(-1)), but the turnover number for undecanoic acid (C11) was less. Dicarboxylic fatty acids and methyl myristate were not metabolized, but monomethyl hexadecanedioate and omega-hydroxypalmitic acid were metabolized, though with lower turnover values. Arachidonic acid was a good substrate, comparable to C14 or C15. The metabolite of arachidonic acid was only alpha-hydroxyarachidonic acid. Alkanes, fatty alcohols, and fatty aldehydes were not utilized as substrates. Analysis of the optical configurations of the alpha-hydroxylated products demonstrated that the products were S-enantiomers (more than 98% enantiomerically pure). These results suggested that this P450 enzyme is strictly responsible for fatty acids and catalyzes highly stereo- and regioselective hydroxylation, where structure of omega-carbon and carboxyl carbon as well as carbon chain length of fatty acids are important for substrate-enzyme interaction.
CONTROL OF OIL SPILLS IN HIGH SPEED CURRENTS: A TECHNOLOGY ASSESSMENT. (1999)

Abstract : A technology assessment has been conducted to analyze the threat of oil spills in fast currents. Technologies and methods for response were evaluated, and promising equipment and strategies were identified. Recommendations are made to pursue those methods, equipment, and training that show the most promise for improved oil spill response capabilities in currents from 1 to 6 knots. Recommendations include technology development, testing, and field demonstrations. In addition, regulations, guidelines and training requirements for the USCG and the oil spill response industry were reviewed to determine their adequacy for fast water response. Improvements are suggested to make these practices more useful. Containment and removal of oil spilled in rivers and coastal tidal regions, where currents exceed one knot, is very difficult because many skimmers and conventional booming methods are not effective in fast currents. Under fast water conditions, the oil must be skimmed as it goes by the recovery device, or the surface current containing the oil must be slowed down without causing entrainment within the skimmer or boom containment system. The benefits and liabilities of high-speed skimmers and specialized boom systems are reviewed for fast water conditions. Promising deflection strategies are shown. Alternate containment and diversion techniques, including pneumatic boom, horizontal air and water jets, plunging waterjets, diversion paravanes, and floating paddle wheels, are also analyzed.