gebhart/patrepeval huggingface dataset:
Cascading content-addressable memories (1992)

The various methods of connecting multiple content-addressable memory (CAM) devices to form a memory system of larger dimensions are surveyed. They include daisy-chaining CAMs to increase the number of elements and possibly using carry-lookahead logic to increase the cascade. To increase the data size, one can replicate the labels in distinct CAMs, use the data storage available in a primary CAM to index a secondary CAM/RAM (read-only memory), or reduce redundancy in labels. To increase the label size, one can use an element cascade with or without a shift register, a master-slave cascade, or a trie cascade. One of the methods examined for increasing the label size is a new trie cascade approach.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Cyclisation of meta-phenylene-bis-alanine derivatives (1998)

The cyclisation of a meta-phenylene-bis-alanine derivative with several different spacer moieties was investigated. A large difference in the ease of cyclisation was observed depending on which path of cyclisation was chosen. NMR studies indicate that the closed-loop molecules adopt folded conformations with the loop directly above the aromatic ring plane.
Formation and mobilization of neutral lipids in the yeast <i>Saccharomyces cerevisiae</i> (2005)

Since energy storage is a basic metabolic process, the synthesis of neutral lipids occurs in all kingdoms of life. The yeast Saccharomyces cerevisiae, widely accepted as a model eukaryotic cell, contains two classes of neutral lipids, namely STEs (steryl esters) and TAGs (triacylglycerols). TAGs are synthesized through two pathways governed by the acyl-CoA diacylglycerol acyltransferase Dga1p and the phospholipid diacylglycerol acyltransferase Lro1p. STEs are formed by two STE synthases Are1p and Are2p, two enzymes with overlapping function, which also catalyse TAG formation, although to a minor extent. Neutral lipids are stored in the so-called lipid particles and can be utilized for membrane formation under conditions of lipid depletion. For this purpose, storage lipids have to be mobilized by TAG lipases and STE hydrolases. A TAG lipase named Tgl3p was identified as a major yeast TAG hydrolytic enzyme in lipid particles. Recently, a new family of hydrolases was detected which is required for STE mobilization in S. cerevisiae. These enzymes, named Yeh1p, Yeh2p and Tgl1p, are paralogues of the mammalian acid lipase family. The role of these proteins in biosynthesis and mobilization of TAG and STE, and the regulation of these processes will be discussed in this minireview.
Liquid phase density in the system helium-nitrogen (1968)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLiquid phase density in the system helium-nitrogenW. B. StreettCite this: J. Chem. Eng. Data 1968, 13, 2, 210–212Publication Date (Print):April 1, 1968Publication History Published online1 May 2002Published inissue 1 April 1968https://pubs.acs.org/doi/10.1021/je60037a021https://doi.org/10.1021/je60037a021research-articleACS PublicationsRequest reuse permissionsArticle Views42Altmetric-Citations4LEARN 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
A Novel Multi-Antenna Impulse Radio UWB Transceiver for Broadband High-Throughput 4G WLANs (2004)

In the last years, a lot of attention has been devoted to both multi-antenna systems with space-time orthogonal block coding (STOBC) and ultra wideband (UWB) transceivers based on impulse-radio (IR) technologies. In this short contribution we anticipate the architecture of a novel transceiver merging both multi-antenna and pulse position modulation (PPM) IR-UWB techniques and then we test the performance in flat-faded application scenarios typical of emerging broadband 4G WLANs. Three main appealing features are retained by the sketched transceiver scheme. First, it allows to equip the UWB receiver with reliable estimates of the (possibly time-varying) underlying multiple-input multiple-output (MIMO) UWB without reducing the overall information throughput conveyed by the system. Second, the performance confirms that the proposed transceiver is able to achieve "full diversity" even at SNRs as low as 1.5-2 dB. As a consequence, the resulting BERs outperform those of current Single-Input Single-Output (SISO) IR-UWB transceivers over two orders of magnitude even at SNR's as low as 3-4 dB. Third, at target BER's below 10/sup -2/ and radiated powers around 250 μW, the coverage ranges allowed by the proposed MIMO IR-UWB scheme typically outperform those of conventional SISO IR-UWB ones of about two orders of magnitude.
Ice detection and classification on an aircraft wing with ultrasonic shear horizontal guided waves (2009)

Ice accumulation on airfoils has been identified as a primary cause of many accidents in commercial and military aircraft. To improve aviation safety as well as reduce cost and environmental threats related to aircraft icing, sensitive, reliable, and aerodynamically compatible ice detection techniques are in great demand. Ultrasonic guided-wave-based techniques have been proved reliable for "go" and "no go" types of ice detection in some systems including the HALO system, in which the second author of this paper is a primary contributor. In this paper, we propose a new model that takes the ice layer into guided-wave modeling. Using this model, the thickness and type of ice formation can be determined from guided-wave signals. Five experimental schemes are also proposed in this paper based on some unique features identified from the guided- wave dispersion curves. A sample experiment is also presented in this paper, where a 1 mm thick glaze ice on a 2 mm aluminum plate is clearly detected. Quantitative match of the experiment data to theoretical prediction serves as a strong support for future implementation of other testing schemes proposed in this paper.
Electrochemical Reduction of CO<sub>2</sub>at Cu Nanocluster / (1010) ZnO Electrodes (2013)

The electrochemical reduction of CO2 in aqueous bicarbonate electrolytes is studied using Cu nanoclusters on single crystal 1010 ZnO electrodes. Cu is known to generate methane as a primary product in electrochemical reduction reactions while the combination of Cu and ZnO produces methanol in gas-phase synthesis reactions. In reduction experiments at -1.4 V versus Ag/AgCl, gas phase products include hydrogen, carbon monoxide, methane and ethylene and liquid phase products include methanol, ethanol, formate, methyl formate and trace levels of propanol. faradaic efficiencies of Cu/ZnO electrodes are similar relative to Cu electrodes with the exception of alcohols where selectivity is improved by an order or magnitude. In-situ FTIR analysis shows several liquid-phase products along with methoxy and formate adsorbates. The nature of the improved alcohol selectivity and intermediates are considered relative to proposed mechanisms and results from this work. © 2013 The Electrochemical Society.
Developing a natural language processing application for measuring the quality of colonoscopy procedures (2011)

The use of NLP for information extraction from free-text colonoscopy and pathology reports creates opportunities for large scale, routine quality measurement, which can support quality improvement in colonoscopy care.
Anisotropy Fields in Hexagonal Ferrimagnetic Oxides by Ferrimagnetic Resonance (1964)

Room-temperature microwave ferrimagnetic resonance measurements of the large uniaxial magnetocrystalline anisotropy fields (Han) of two compositional series of hexagonal ferrimagnetic oxides are reported. Han was found to increase rapidly in the Al-substitution series (SrO·xAl2O3·(6−x)Fe2O3) from 19.3 to 53.4 kOe as x was increased from 0 to 1.7. In the TiCo series (BaO·x[TiCoO3]·(6−x)Fe2O3), Han was found to decrease from 17.5 to 6.6 kOe as x was increased from 0 to 0.78. Experimental plots are given for the variation of Han with x. The linewidths of these oriented polycrystalline compounds were all about 2 kOe. The g value was consistently found to be about 1.9. Variation with x of the respective saturation magnetizations, anisotropy constants, and anisotropy fields are discussed; relations are presented.
19.5 Three-dimensional 128Gb MLC vertical NAND Flash-memory with 24-WL stacked layers and 50MB/s high-speed programming (2014)

In the past few years, various 3D NAND Flash memories have been demonstrated, from device feasibility to chip implementation, to overcome scaling challenges in conventional planar NAND Flash [1-3]. The difficulties include shrinking the NAND cell and increasing manufacturing costs due to quadruple patterning and extreme ultraviolet lithography, motivating the development of the next-generation node beyond 16nm-class NAND Flash [4]. In this paper, as a new 3D memory device with lower manufacturing cost and superior device scalability, we present a true 3D 128Gb 2b/cell vertical-NAND (V-NAND) Flash. The chip accomplishes 50MB/s write throughput with 3K endurance for typical embedded applications such as mobile and personal computer. Also, extended endurance of 35K is achieved with 33MB/s of write throughput for data center and enterprise SSD applications.
Binocular color fusion limit (1979)

When two lights of different wavelengths are dichoptically presented to the eyes to form a single visual field, the fusion of colors cannot be assured unless the difference is relatively small. The limit of the wavelength difference delta lambda beyond which no homogeneous color is obtained was determined for the wavelengths covering a range of about 500 to 660 nm. It varied from about 10 to 50 nm depending upon the wavelength region investigated, which is much larger than the delta lambda values normally obtained in wavelength discrimination experiments. The limit was also obtained for a pair made up of a white light and a colored light that varied in purity. The value was again quite large. These results suggested that the tolerance for color difference is fairly lenient as far as binocular color fusion is concerned.
"Almost blind" steering vector estimation using second-order moments (1996)

The problem of separation and reconstruction of superimposed signals using an array of sensors attracted considerable interest. The estimation of the steering vectors of an uncalibrated array is considered. We identify a cost function whose minimizer is a statistically consistent estimate of the unknown parameters. Next, we present an iterative algorithm for finding a local minimum of that cost function. The proposed algorithm is guaranteed to converge, the performance of the algorithm is compared with the Cramer-Rao bound (CRB).
Phased arrays - part 1: theory and architectures (2002)

An overview of electronically scanned array technology with a brief introduction of the basic theory and array architectures are presented. Implementations, current state-of-the-art, and future trends are briefly reviewed in Part II of this paper.
THE EFFECT OF SAP-STAIN ON THE PROPERTIES OF TIMBER (1937)

Journal Article THE EFFECT OF SAP-STAIN ON THE PROPERTIES OF TIMBER: I. Effect of Sap-stain on the Strength of Scots pine Sapwood Get access W. P. K. FINDLAY, W. P. K. FINDLAY Forest Products Research Laboratory Search for other works by this author on: Oxford Academic Google Scholar C. B. PETTIFOR C. B. PETTIFOR Forest Products Research Laboratory Search for other works by this author on: Oxford Academic Google Scholar Forestry: An International Journal of Forest Research, Volume 11, Issue 1, 1937, Pages 40–52, https://doi.org/10.1093/oxfordjournals.forestry.a062669 Published: 01 April 1937
Integrated gene and species phylogenies from unaligned whole genome protein sequences (2002)

Using a large mitochondrial genome dataset, we have produced species trees that are largely in agreement with previously published trees based on the analysis of identical datasets using different methods. These trees also agree well with currently accepted phylogenetic theory. In principle, our method could be used to compare much larger bacterial or nuclear genomes in full molecular detail, ultimately allowing accurate gene and species relationships to be derived from a comprehensive comparison of complete genomes. In contrast to phylogenetic methods based on alignments, sequences that evolve by relative insertion or deletion would tend to remain recognizably similar.
Encyclopedia of Space Science and Technology (2003)

Air and Ship-Based Launch Vehicles.Apollo 17 and the Moon.Ariane Rocket Program.Artificial Gravity.Asteroids.Astrobiology.Astronauts and the people who selected them: A Compendium.Astronomy-Infrared.Biological Responses and Adaptation to SpaceFlight: Living in Space - An International Enterprise.Biomedical Support of Piloted SpaceFlight.Cardiovascular Systems in Space.Chandra X-Ray Observatory.Civil Land Observation Satellites.Comets.Commercial Applications of Communications Satellite Technology.Communications Satellites, Technology of.Communication Satellite Development in Russia.Conversion of Missiles into Space Launch Vehicles.Cosmonauts Selection and Preparation.Deep Space Network, Evolution of Technology.Earth-Orbiting Satellites, Data Receiving and Handling Facilities.Earth Orbiting Satellites Theory.Eastern Launch Facilities, Kennedy Space Center.Electromagnetic Propulsion.Evolution of U.S. Expendable Launch Vehicles.Exploration of Mars by the USSR.Exploration of the Moon by Soviet Spacecraft.Extraterrestrial Life, Searching for.First Flight of Man in Space.Global Navigation Satellite System.Global Positioning System (GPS).Hubble Space Telescope.Human Operations in Space During the Space Shuttle Era.Immunology and infection in Space.International Space Station.Interplanetary Medium.Ion Propulsion.Jupiter.Liquid-Fueled Rockets.Mars.Mercury.Military Ground Control Centers, United States.Military Use of Space.Moon.Muscle Loss in Space: Physiological Consequences.NASA Mission Operation Control Center at Johnson Space Center.Nuclear Rockets and Ramjets.Optical Astronomy from Space.Pathfinder Mission to Mars.Planetary Exploration Spacecraft Design.Plasma Thrusters.Pluto and Charon.Precision Orbit Determination for Earth Observation Systems.Rocket Propulsion Theory.Russia's Launch Vehicles.Russian Spaceports.Russian Space Stations.Saturn System.Science from Sounding Rockets.Size and Shape of Earth from Satellites.Skylab.Solid fuel Rockets.Space Life SciencesSpace Programs related to National Security.Space Radiation.Space Resources, Occurrence and Uses.Space Shuttle Orbiter.Spacecraft Guidance, Navigation and Control Systems.Spacelab.Sputnik 1: The First Artificial Earth Satellite.Sun.U.S. Manned Space Fight: Mercury to the Shuttle.Uranus and Neptune.Vega Project.Venus Mission.Weather Satellites.
Kalman interpolation filter for channel estimation of LTE downlink in high-mobility environments (2012)

Abstract The estimation of fast-fading LTE downlink channels in high-speed applications of LTE advanced is investigated in this article. In order to adequately track the fast time-varying channel response, an adaptive channel estimation and interpolation algorithm is essential. In this article, the multi-path fast-fading channel is modelled as a tapped-delay, discrete, finite impulse response filter, and the time-correlation of the channel taps is modelled as an autoregressive (AR) process. Using this AR time-correlation, we develop an extended Kalman filter to jointly estimate the complex-valued channel frequency response and the AR parameters from the transmission of known pilot symbols. Furthermore, the channel estimates at the known pilot symbols are interpolated to the unknown data symbols by using the estimated time-correlation. This article integrates both channel estimation at pilot symbols and interpolation at data symbol into the proposed Kalman interpolation filter. The bit error rate performance of our new channel estimation scheme is demonstrated via simulation examples for LTE and fast-fading channels in high-speed applications.
Visualization of the flow past a frisbee (1991)

The flow past a Frisbee is visualized in a low-speed wind tunnel using smoke to identify the mechanism of lift generation in forward flight. It is found that as the air flow passes over a Frisbee, a pair of longitudinal vortices is formed just behind it. The vortex pair induces substantial downwash in the downstream flow, and as a result, a lift force can act on a Frisbee. The rotation of a Frisbee greatly strengthens the vortex pair, thereby enhancing the downwash and hence the lift force.
Effect of Third Elements on Damping Capacity of Mn-20Cu Alloy (1993)

An attempt has been made to develop the manganese-based and workable damping alloys containing 20 at% copper, together with 2 or 5 at% additive elements, such as nickel, iron, cobalt, vanadium, chromium, zirconium, titanium, aluminum, zinc and tin.Nickel was the most effective element for increasing damping capacity of a Mn-20Cu alloy. The second ranking elements were followed by iron, cobalt, aluminium, and zinc. A group of additive elements consisting of vanadium, zirconium, titanium, and chromium, showed some effect with the addition of 2%, but not with that of 5%. Tin was ineffective even with addition of 2% and 5%. We have discussed a correlation between additive elements and the effectiveness, on the basis of the following two viewpoints: (1) the solubility of additive elements in manganese or copper and (2) the possibility of the precipitation or the primary crystallization during solidification. We found that the damping capacity may increase proportionaly with the increased solubility of additive elements in manganese or copper. This effect of nickel addition may be related to formation of a complete solid solution for manganese and copper. Little effectiveness of the additive elements, such as chromium, titanium, zirconium, and tin, may be associated with little solubility for parent phase and with the possibility of the precipitation and the primary crystallization. The elements, showing a large solubility for one side and little for other side, such as iron, vanadium, cobalt, aluminum, and zinc, may yield the medium effect, depending on the additive quantity. We concluded that in manganese-based alloys the improvement of the damping characteristics may be obtained by the additive elements that have a large solubility without forming second phases during heat treatment or solidification. An alloy, Mn-20Cu-5Ni, showed a value of 0.28 in logarithmic decrement (a value of 43% in specific damping capacity), 370 MPa in tensile strength, and 27% elongation.
Properties of sputtered mercury telluride contacts on p-type cadmium telluride (1988)

Because of the high value of its work function (qΦm ∼ 5.9 eV), the semimetallic compound HgTe has been used to realize ohmic contacts of low specific resistance ρc (Ω cm2) on the II-VI semiconductor compound p-type CdTe, in the bulk resistivity range 70 Ω cm < ρB < 45 kΩ cm. The HgTe films were deposited by cathodic sputtering in a mercury vapour, at about 150 °C. Planar contacts were carried out and their specific resistance determined from the Transmission Line Model (TLM) and the Extended Transmission Line Model (ETLM). The methodology of the measurement is developed. For high values of the bulk resistivity (ρB = 1.45 kΩ cm ; 13 kΩ cm ; 16 kΩ cm ; 45 kΩ cm), the ratio ρc/ρB is about 10 -2 cm, and the J(V) characteristics show a quasi linear shape. For ρB = 70 Ω cm, ρc/ρ B is about 10-1 cm, and the J(V ) characteristics are no more linear. The sputter etching of the CdTe surface before HgTe deposition does not affect these results. The chemical nature and/or the structural disorder of the CdTe surface account for the observed deviations to the thermo-ionic effect theory.
The LogLog counting reversible sketch: A distributed architecture for detecting anomalies in backbone networks (2012)

The increasing number of network attacks causes growing problems for network operators and users. Thus, detecting anomalous traffic is of primary interest in IP networks management and many detection techniques, able to promptly reveal and identify network attacks, mainly detecting Heavy Changes (HCs) in the network traffic, have been proposed. Nevertheless, the recent spread of coordinated attacks, that occur in multiple networks simultaneously, makes extremely difficult the detection, using isolated intrusion detection systems that only monitor a limited portion of the Internet. For this reason in this paper we propose a novel distributed architecture that represents a general framework for the detection of network anomalies. The performance analysis, presented in this paper, demonstrates the effectiveness of the proposed architecture.
Multivariable feedback, sensitivity, and decentralized control (1983)

In this paper the problem of sensitivity, reduction by feedback is studied and related to a problem of decentralized control. A plant will be represented by an <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">N \times N</tex> matrix of frequency responses, which may be unstable or irrational. The object will be to find conditions on <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">P(s)</tex> under which a diagonal feedback <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">F(s)</tex> can make the sensitivity <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">\parallel{I + P(s)F(s)}^{-1}\parallel</tex> arbitrarily small over some specified frequency interval [ <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-j\omega_{0}, j\omega_{0}</tex> ] without violating a global sensitivity, bound <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">\parallel{I+ P(s)F(s)}^{-1}\parallel \leq M</tex> , ( <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">M\geq</tex> some const. >1) for <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Re(s) \geq 0</tex> . It will be shown that such a diagonal feedback of the "high gain" type can be constructed whenever <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">P^{-1}(s)</tex> is analytic in <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Re(s)\geq 0, P(s)</tex> satisfies an attenuation condition near <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s = \infty</tex> , and <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">P(s)</tex> approaches diagonal dominance at high frequencies. It will also be shown that these conditions on the plant can be interpreted as conditions for the existence of a decentralized wide-band control scheme.