gebhart/patrepeval huggingface dataset:
A Novel Frame Synchronization Method Using Correlation Between Permuted Sequences (2007)

A novel "permuted sequences combination" method is proposed in this paper, which uses the conventional frame structure wherein two sync words, each comprising M complex symbols, are appended at the frame start. The goal of this new method is to reduce the large variance of the timing estimation error inherent in the conventional correlation method. Essentially, the first sync word, stilde <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> , is a predetermined constant amplitude zero autocorrelation (CAZAC) sequence. The second sync word, stilde <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> , which is a certain permutation of the first so that the combination of the two received sync signal vectors perform sliding window processing with peak occurs at the correct frame start. We show that the symmetric correlation method previously presented in (Park et al., 2003) for orthogonal frequency division multiplexing (OFDM) systems can be regarded a special case of the proposed permuted sequences combination method. As a special case of permuted sequences combination method, symmetric correlation method is robust to the frequency offset. The proposed methods have good simulation results in both AWGN channel and multipath environments. Simulation results support the analysis.
Efficient Synthesis of Pyrazoles: Oxidative CC/NN Bond‐Formation Cascade (2010)

Golden section: A novel synthetic strategy for the synthesis of tetrasubstituted pyrazoles is provided. In an efficient CC/NN bond-formation cascade, enamines and nitriles are oxidatively coupled to deliver pyrazoles in good yields (see scheme). The ready availability of the starting materials, the high level of practicability of the reaction and work up, and the avoidance of hydrazine starting materials make the method attractive. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Drilling Performance is a Function of Power at the Bit and Drilling Efficiency (2012)

Abstract Today’s sophisticated data acquisition systems for both surface and downhole drilling data have greatly enhanced the understanding of the basic drilling mechanics and helped in the identification of major dysfunctions particularly harmful downhole vibrations. Various methods are now being used to optimize drilling practices by monitoring efficiency indicators such as mechanical specific energy (MSE) and preventing harmful vibrations by adjusting drilling parameters real time. However, focusing on the efficiency of components and the prevention of dysfunctions is only a partial solution. It is the magnitude of mechanical power delivered to the bit that defines the capacity of the system and directly affects efficiencies, operating practices and performance. This paper will show how the power at the bit and drilling efficiency vary as a function of drill string and BHA configuration, bit selection and drilling parameters. Field examples will illustrate the magnitude of parasitic losses caused by well geometry and the downhole environment. In many cases it is striking how little power is left for the drill bit which in the end dictates the potential rate of penetration and thus the cost per foot and economics of the drilling process. Particular emphasis has been put on new and intuitive ways to visually display the power at the surface and downhole. It makes it possible to quantify system limits and identify key dysfunctions in one, simple graph that can be used in both pre or post well analysis and real time. The better understanding of the entire drilling system and the functional relationship of its parts can be a strong driver for both short and long-term improvements in system design, drilling practices and bit selection which ultimately results in higher productivity and lower well construction cost.
Ultimate whispering gallery mode resonator and nontrivial relationship between spectrum and shape (2006)

Using a similarity between morphologies of an optical planar waveguide and a whispering gallery resonator, we theoretically propose and experimentally demonstrate a one dimensional ring-like macroscopic object characterized with high finesse and small mode volume.
New Admixtures for Cold Weather Concreting (1991)

Chemicals were tested for their ability to promote strength gain in portland cement concrete at low temperature. The admixtures depressed the freezing point of the mix water and accelerated the hydration of cement at low temperature. Tests were conducted at 20, -5 and -10°C. The results show that low-temperature strength gain of antifreeze concrete can be comparable to that of additive-free concrete cured at room temperature. These additives, so-called 'antifreeze admixtures' have potential for use in the cold regions.
Preponderance of Thiopurine S-Methyltransferase Deficiency and Heterozygosity Among Patients Intolerant to Mercaptopurine or Azathioprine (2001)

There is a significant (> six-fold) overrepresentation of TPMT deficiency or heterozygosity among patients developing dose-limiting hematopoietic toxicity from therapy containing thiopurines. However, with appropriate dosage adjustments, TPMT-deficient and heterozygous patients can be treated with thiopurines, without acute dose-limiting toxicity.
Long-Endurance Nanocrystal $\hbox{TiO}_{2}$ Resistive Memory Using a TaON Buffer Layer (2011)

Using nanocrystal (nc) TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> and TaON buffer layer, the Ni/GeO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> /nc-TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /TaON/TaN resistive random access memory (RRAM) showed forming-free resistive switching, self compliance set/reset currents, excellent current distribution, low 0.7-pJ switching energy, and long 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</sup> cycling endurance. The very long endurance in this novel RRAM may create new applications beyond Flash memory.
Cascade One‐Pot Synthesis of Orange‐Red‐Fluorescent Polycyclic Cinnolino[2,3‐<i>f</i>]phenanthridin‐9‐ium Salts by Palladium(II)‐Catalyzed C−H Bond Activation of 2‐Azobiaryl Compounds and Alkenes (2019)

Abstract Quaternary ammonium salts were synthesized in moderate to good yields through double oxidative C−H bond activation on azobenzenes. The mechanism of the highly regioselective reaction of 2‐azobiaryls with alkenes to give orange‐red‐fluorescent cinnolino[2,3‐ f ]phenanthridin‐9‐ium salts and 15 H ‐cinnolino[2,3‐ f ]phenanthridin‐9‐ium‐10‐ide is proposed to involve ortho C−H olefination of the 2‐azobiaryl compound with the alkene, intramolecular aza‐Michael addition, concerted metalation–deprotonation (CMD), reductive elimination, and oxidation.
Quantum repeaters using coherent-state communication (2008)

We investigate quantum repeater protocols based upon atomic qubit-entanglement distribution through optical coherent-state communication. Various measurement schemes for an optical mode entangled with two spatially separated atomic qubits are considered in order to nonlocally prepare conditional two-qubit entangled states. In particular, generalized measurements for unambiguous state discrimination enable one to completely eliminate spin-flip errors in the resulting qubit states, as they would occur in a homodyne-based scheme due to the finite overlap of the optical states in phase space. As a result, by using weaker coherent states, high initial fidelities can still be achieved for larger repeater spacing, at the expense of lower entanglement generation rates. In this regime, the coherent-state-based protocols start resembling single-photon-based repeater schemes.
Real-Time Region-of-Interest Video Coding Using Content-Adaptive Background Skipping With Dynamic Bit Reallocation (2006)

In this paper, we propose a low-complexity content-adaptive background skipping scheme for region-of-interest (ROI) video coding in real-time wireless video telephony applications. Based on the real-time content information of the current and previous frames, such as foreground shape deformation, foreground and background motion, and background texture complexity, the proposed algorithm dynamically decides whether to skip Non-ROI macroblocks of current frame and reallocate saved bits to ROI and coded non-ROI. In this work, we proposed and compared three bit reallocation strategies, and the one predicting the future events using a Bayesian model is found the most efficient. Experimental results indicate that the proposed scheme significantly outperforms other methods by up to 2.5dB.
The unexpected discovery of the Mg(HMDS)<sub>2</sub>/MgCl<sub>2</sub> complex as a magnesium electrolyte for rechargeable magnesium batteries (2015)

We developed a unique class of non-Grignard, aluminum-free magnesium electrolytes based on a simple mixture of magnesium compounds: magnesium hexamethyldisilazide (Mg(HMDS)<sub>2</sub>) and magnesium chloride (MgCl<sub>2</sub>).
A moving-object extraction method robust against illumination level changes for a pedestrian counting system (2002)

The paper presents a moving object extraction method robust against illumination level changes for a real-time pedestrian counting system based on an x-t space-time image. This system, called the Ped-Counter, counts the number of pedestrians using TV camera images and image processing. The TV camera takes images of a path or the entrance of a store or an exhibition hall. A practical location for the counting system is under constant illumination conditions, such as under an arcade or in a room. If the system is used in other locations and under different conditions, for example, an outdoor path or an entrance where there is direct sunlight, then it must be robust against illumination level changes. The paper proposes two new processes for extracting moving objects from space-time images using background subtraction. The first is a background image reconstruction process using statistical characteristic analysis of temporal changes of a target pixel. The other is a moving object extraction process using delayed subtraction. These processes make the system robust against illumination level changes. This method is evaluated over a half-year period at an entrance experiencing drastic illumination level changes. We also confirm that this method can extract moving objects, that it is robust against season, weather, and time, and that the Ped-Counter is accurate.
OPTIMISATION OF A DISCONNECTABLE TURRET MOORING SYSTEM (1992)

One of the major innovations in conjunction with Floating Production and Storage Systems is the development of mooring systems that can be quickly and easily disconnected with the approach of major storm conditions. However, the design process for disconnectable systems is much more complex than for non-disconnectable systems.
A Graph Lattice Approach to Maintaining Dense Collections of Subgraphs as Image Features (2011)

Document classification and indexing methods depend on having informative image features. This paper shows how large families of complex features can be built out of simpler ones through construction of a graph lattice -- a hierarchy of related sub graphs linked in a lattice. A graph lattice enables efficiency gains that make it possible to effectively employ bag-of-words methods for document classification using high-dimensional feature vectors. Each feature is itself a subgraph, and a feature vector is a count of occurrences of sub graphs in the image. The graph lattice enables methods for adaptively growing a feature space of sub graphs tailored to observed document genres. We demonstrate the approach through classification of forms containing rectilinear line art.
[POSTER] Enhanced Personalized Targeting Using Augmented Reality (2017)

Augmented Reality (AR) based applications have existed for some time; however, their true potential in digital marketing remains unexploited. To bridge this gap we create a novel consumer targeting system. First, we analyze consumer interactions on AR-based retail apps to identify her preferred purchase viewpoint during the session. We then target the consumer through a personalized catalog, created by embedding recommended products in her viewpoint visual. The color and style of the embedded product are matched with the viewpoint to create recommendations, and personalized text content is created using visual cues from the AR data. Evaluation with user studies show that our system is able to identify the viewpoint, our recommendations are better than tag-based recommendations, and targeting using the viewpoint is better than that of usual product catalogs.
Terahertz dynamics of amorphous (Bio) pharmaceutical mixtures (2015)

The molecular dynamics of amorphous materials and its relation to the physico-chemical changes in the organic glasses is still a topic of a dispute in the scientific community. Terahertz spectroscopy however provides very important experimental evidence on the fast dynamics in the overlapping region between the molecular relaxations and structural excitations, which is extremely sensitive to both dynamical and structural changes in the amorphous systems. We show how this information can be utilised to enhance the long-term stability of amorphous pharmaceutical systems and cryo-preserved proteins.
A rapid method for the quantification of fatty acids in fats and oils with emphasis on <i>trans</i> fatty acids using fourier transform near infrared spectroscopy (FT‐NIR) (2005)

A rapid method was developed for classifying and quantifying the FA composition of edible oils and fats using Fourier Transform near infrared spectroscopy (FT-NIR). The FT-NIR spectra showed unique fingerprints for saturated FA, cis and trans monounsaturated FA, and all n-6 and n-3 PUFA within TAG to permit qualitative and quantitative comparisons of fats and oils. The quantitative models were based on incorporating accurate GC data of the different fats and oils and FT-NIR spectral information into the calibration model using chemometric analysis. FT-NIR classification models were developed based on chemometric analyses of 55 fats, oils, and fat/oil mixtures that were used in the identification of similar materials. This database was used to prepare three calibration models-one suitable for the analysis of common fats and oils with low levels of trans FA, and the other two for fats and oils with intermediate and high levels of trans FA. The FT-NIR method showed great potential to provide the complete FA composition of unknown fats and oils in minutes. Compared with the official GC method, the FT-NIR method analyzed fats and oils directly in their neat form and required no derivatization of the fats to volatile FAME, followed by time-consuming GC separations and analyses. The FT-NIR method also compared well with the official FTIR method using an attenuated total reflectance (ATR) cell; the latter provided only quantification of specific functional groups, such as the total trans FA content, whereas FT-NIR provided the complete FA profile. The FT-NIR method has the potential to be used for rapid screening and/or monitoring of fat products, trans FA determinations for regulatory labeling purposes, and detection of contaminants. The quantitative FT-NIR results for various edible oils and fats and their mixtures are presented based on the FT-NIR models developed.
Vector intensity field of noise sources with a new microphone array (1980)

A new microphone array system is being constructed to study the radiation from noise sources and nonsteady state sources using the principles of nonwavelength limited acoustical holography. The system can provide an “acoustic snapshot” of the pressure in a plane containing an array of up to 1024 microphones with a total data acquisition time of less than 160 μs. Up to 1024 snapshots can be recorded in a time series to provide an “acoustic filmstrip.” Using digital holographic techniques, a corresponding filmstrip of the vector intensity (the energy flux) of the sound field can be reconstructed in the region above the source. This intensity filmstrip can be used to visualize the time evolution of the energy flow from the sources to the farfield. This new system will be described and some preliminary results will be shown.
Detection of Baculovirus Protein in Cell Culture and Insect Larvae by Enzyme-linked Immunosorbent Assay (ELISA) (1981)

SUMMARY Cell cultures of the alfalfa looper, Trichoplusia ni (Tn-368), codling moth, Laspeyresia pomonella (Cp-169) and viper spleen cells (viper-VSW) were inoculated with Autographa californica non-occluded nuclear polyhedrosis virus (AcMNPV-NOV). In both Tn-368 and Cp-169 cells an increase in the concentration of virus protein was detected by ELISA from 9 to 20 h after virus inoculation. An average of 2 ng AcMNPV protein was detected in homogenates of T. ni larvae from 12 to 14 h post-infection (p.i.). HzSNPV proteins were first detected in Heliothis zea larvae 16 h p.i. At this time approx. 60 ng HzSNPV protein was detected in homogenates of the virus-infected larvae. Virus protein was not detected in viper spleen cells, and Lymantria dispar larvae inoculated with AcMNPV, or in Estigmene acrea larvae inoculated with HzSNPV.
A fast inversion method for multicomponent induction log data (2001)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2001A fast inversion method for multicomponent induction log dataAuthors: Liming YuJiaqi XiaoLiming YuBerthold Krieghäser, Otto Fanini and Jiaqi XiaoBaker Atlashttps://doi.org/10.1190/1.1816617 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1190/1.1816617FiguresReferencesRelatedDetailsCited ByFast inversion of triaxial induction data in dipping crossbedded formationsGong Li Wang, Tom Barber, Peter Wu, David Allen, and Aria Abubakar24 January 2017 | GEOPHYSICS, Vol. 82, No. 2Triaxial Induction Tool and Logging-While-Drilling Tool Response in a Transverse Isotropic-Layered FormationA 3D parametric inversion algorithm for triaxial induction dataAria Abubakar, Tarek M. Habashy, Vladimir Druskin, Leonid Knizhnerman, and Sofia Davydycheva12 January 2006 | GEOPHYSICS, Vol. 71, No. 1A data‐adaptive spatial resolution method for three‐dimensional inversion of triaxial borehole electromagnetic measurementsFaruk O. Alpak, Robert K. Mallan, Junsheng Hou, and Carlos Torres‐Verdín7 December 2005 SEG Technical Program Expanded Abstracts 2001ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2001 Pages: 2135 publication data© 2001 Copyright © 2001 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 03 Jan 2005 CITATION INFORMATION Liming Yu and Jiaqi Xiao, (2001), "A fast inversion method for multicomponent induction log data," SEG Technical Program Expanded Abstracts : 361-364. https://doi.org/10.1190/1.1816617 Plain-Language Summary PDF DownloadLoading ...
Surface-modified single wall carbon nanohorn as an effective electrocatalyst for platinum-free fuel cell cathodes (2015)

A completely Pt-free electrocatalyst whose oxygen reduction activity is comparable to Pt/C could be prepared by a one-step process involving annealing of single walled carbon nanohorns, melamine and FeCl<sub>3</sub>.
Temperature-sensitive mutants of influenza A virus: evaluation of the A/Victoria/75-ts-1A2 temperature-sensitive recombinant virus in seronegative adult volunteers (1979)

An influenza A virus recombinant bearing the surface antigens of the A/Victoria/3/75 (H3N2) strain and the two ts genes of the A/Udorn/72-ts-1A2 virus was evaluated for attenuation, antigenicity, and protective effect in 42 doubly seronegative adult volunteers (i.e., individuals who lacked detectable serum antibodies for the hemagglutinin and neuraminidase antigens). This recombinant, which had a 37 degrees C shutoff temperature for plaque formation and ts mutations on the genes thought to code for the P1 and P3 polymerase proteins, infected 90% of the volunteers. Of the volunteers, 5% developed mild coryza or rhinitis but other signs or symptoms were not observed, indicating that the A/Victoria/75-ts-1A2 recombinant was more attenuated than the A/Victoria/75-ts-1[E] recombinant. Vaccinees shed virus for a shorter interval and at a lower titer than did the A/Victoria/75-ts-1[E] vaccinees. Each ts-1A2 isolate retained the ts phenotype indicating that the recombinant was stable genetically in doubly seronegative adults. Finally, the ts-1A2 recombinant induced significant resistance to subsequent challenge with A/Victoria/75 wild-type virus.
Scalable compression based on tree structured vector quantization of perceptually weighted block, lapped, and wavelet transforms (2002)

This paper presents an algorithm for scalable compression using tree structured vector quantization (TSVQ) of perceptually weighted block, lapped, or wavelet transforms. The algorithm produces an embedded bit-stream to support decoders with various spatial and temporal resolutions. Bandwidth scalability with a dynamic range from a few kbps to several Mbps is provided. The algorithm further supports decoders with varying alphabet size, computation, memory, latency and power requirements. The embedded bit-stream produced is prioritized with bits arranged in order of visual importance. The algorithm also allows easy joint-source channel coding on heterogenous networks. The subjective quality of compressed images improves significantly by the use of perceptual distortion measures.
Metrics for modularization assessment of Scala and C# systems (2013)

Modularization of a software system leads to software that is more understandable and maintainable. Hence it is important to assess the modularization quality of a given system. In this paper, we define metrics for quantifying the level of modularization in Scala and C# systems. We propose metrics for Scala systems, measuring modularization with respect to concepts like referential transparency, functional purity, first order functions etc., which are present in modern functional programming languages. We also propose modularity metrics for C# systems in addition to the Object Oriented metrics that are existing in the literature. We validated our metrics, by applying them to popular open-source Scala Systems - Lift, Play, Akka and C# systems - ProcessHacker and Cosmos.
Broadcasting VBR Traffic in a WiMAX Network (2008)

The next generation of wireless networks (LTE, WiMAX and UMB) will have sufficient capacity to support video broadcasts in addition to unicast services such as voice and data. Since broadcast services are resource intensive, radio resources must be carefully managed to ensure proper operation of the unicast services. One approach is to allocate a fixed set of resources (a zone) specifically for broadcast services. Multiple multimedia streams are then multiplexed within this zone for broadcast over the air. In this paper we focus on the case of variable bit rate (VBR) streams with long range dependency. In this case buffering of streams to smooth out bursts is not sufficient and efficient resource multiplexing must instead be used for adequate delay performance. We present a novel scheduling algorithm that achieves significant multiplexing gains. This scheduler is designed for low terminal power utilization as well as high broadcast channel utilization.