gebhart/patrepeval huggingface dataset:
<i>In</i> <i>situ</i> deposition of epitaxial PbZr<i>x</i>Ti(1−<i>x</i>)O3 thin films by pulsed laser deposition (1991)

Epitaxial thin films of PbZrxTi(1−x)O3 (PZT) with 0≤x≤0.6 have been deposited in situ by pulsed laser deposition from stoichiometric targets onto 〈100〉 oriented single crystals of MgO and SrTiO3. Film composition was extremely sensitive to the substrate temperature and the oxygen deposition pressure. In a high (200–300 mTorr) oxygen ambient, phase-pure 〈100〉 oriented PZT films (x=0.54) were formed at a substrate temperature of 550 °C on SrTiO3. On MgO, competition between formation of the ferroelectric phase and a nonferroelectric (pyrochlore) phase was observed for compositions near the morphotropic phase boundary (x∼0.54). Polycrystalline PZT films which were 70%–90% PZT were also deposited on Pt coated Si and GaAs under similar conditions.
Panoramic infrared-imaging spectroradiometer model with reverse phase-modulated beam broadcasting (1997)

The optical design of a passive remote sensor, a panoramic spectroradiometer (PANSPEC), and its computer-simulated image performance are presented. PANSPEC monitors the surrounding infrared environment for chemical clouds, detecting a presence once absorption or emission spectra characteristic of the chemical species are resolved. PANSPEC broadcasts chemical presence and cloud heading when equipped with a laser transmitter that projects a polarized laser beam source with phase encryption back through the optical system into object space. Various merit functions were programmed and accessed during computer optimization runs for shaping and positioning of the instrument's semishell entrance window, collector, collimator, interferometer, and imager. The result is a balanced near-diffraction-limited circular image, 6.3 mm across with 10-line pairs/mm spatial resolution at 50% modulation, and an f/2.3 working speed.
José Bergamín and the aesthetics of the Generation of 1927 (1981)

For Premraj Halkhoree. In Memoriam. In his panoramic assessment of the literary climate in Spain in the nineteen twenties, Juan Cano Ballesta makes the following observation: ‘Jose Bergamin … se pr...
A limited-contention cross-coupled level shifter for energy-efficient subthreshold-to-superthreshold voltage conversion (2014)

The subthreshold level shifter is an indispensable circuit for ultra-low voltage systems to communicate with different power domains. In this paper, we present a limited-contention level shifter using non-ratioed cross-coupled structure instead of ratioed one. Experimental results show that the proposed circuit can robustly convert subthreshold input up to superthreshold output. About 55% static power reduction is achieved without sacrifing performance when compared with the cross-coupled structure that needs diode-connected transistors and MTCMOS technique to converter ultra-low voltage signals.
Performance and the Use of an Information System (1975)

The purpose of this paper is to explore the contributions of information systems to the organization. A descriptive model is presented which identifies (1) expected predictors of performance and the use of an information system and (2) the relationship between the use of a system and performance. The results of a study of sales force performance and the use of a sales information system are presented to provide empirical evidence to support the model. The results confirm the general relationships among classes of variables in the model, but specific relations among variables are complex and depend heavily on the environment of the organization.
Evaluation parameters of surface texture on shot-blasted surfaces (2011)

Color, texture and the tactile senses are recognized as the evaluation factors for a metal surface. In the present, though those factors are widely used as the popular comprehensive indexes to characterize a metal surface, evaluation of these factors are mainly referred to the terms of touch or visual look. From a customer point of view, particular factors to characterize a metal surface and its numerical expression may not only be helpful to judge its commercial value, but also to avoid unnecessary trouble on judging its appearance. Moreover, these quantitative evaluations are able to improve reproducible accuracy. This paper describes the quantitative evaluation method of a surface texture for metals. As the specimens, aluminum alloy that is one of the popular metals of the exterior material for industrial products are used. The surface textures have been measured by a non-contact 3D surface profiler and the results have been compared with nickel silver alloy and stainless steel. First, the surface textures are measured by stylus method and optical interferometer method to find the relationship between those two measurement methods. Then, as x surface property parameters to express transcriptive property of shot blasted, upper material ratio Sr1 and lower material ratio Sr2 were concluded to be effective.
Neural Learning in Structured Parameter Spaces - Natural Riemannian Gradient (1996)

The parameter space of neural networks has the Riemannian metric structure. The natural Riemannian gradient should be used instead of the conventional gradient, since the former denotes the steepest descent direction of a loss function in the Riemannian space. The behavior of the stochastic gradient learning algorithm is much more effective if the natural gradient is used. The present paper studies the information-geometrical structure of perceptrons and other networks, and prove that the on-line learning method based on the natural gradient is asymptotically as efficient as the optimal batch algorithm. Adaptive modification of the learning constant is proposed and analyzed in terms of the Riemannian measure and is shown to be efficient. The natural gradient is finally applied to blind separation of mixtured independent signal sources. 1 Introduction Neural learning takes place in the parameter space of modifiable synaptic weights of a neural network. The role of each parameter is dif...
The surface of virulent Treponema pallidum: resistance to antibody binding in the absence of complement and surface association of recombinant antigen 4D (1986)

The binding of immunoglobulin G present in syphilitic immune rabbit serum, syphilitic human serum, and rabbit antiserum to purified recombinant Treponema pallidum antigen 4D by T. pallidum, Nichols strain, was studied by immunoelectron microscopy. Treponemes were incubated with antiserum under the conditions of the T. pallidum immobilization test, in which T. pallidum-specific antibody renders the organism nonmotile and avirulent only in the presence of complement after a 16-h incubation period in an anaerobic environment. Antibody was not demonstrable on the surface of T. pallidum incubated with nonimmune rabbit serum or normal human serum in the presence of complement. Similarly, in the absence of complement, little or no antibody was found on the treponemal surface after incubation with syphilitic immune rabbit serum, syphilitic human serum, or rabbit antiserum directed against the recombinant 4D antigen. The addition of complement to syphilitic immune rabbit serum, syphilitic human serum, and anti-4D antibody resulted in immobilization and the deposition of antibody on the entire surface of the immobilized organisms. These results corroborate earlier work by other investigators demonstrating the resistance of freshly isolated T. pallidum to antibody binding in a variety of serological tests. Detection of 4D antigen on the surface of immobilized T. pallidum strongly implies that the use of T. pallidum immobilization test conditions provides a means to demonstrate the association of individual surface antigens on virulent T. pallidum. The resistance of T. pallidum to antibody binding may be relevant to the pathogenesis of syphilis.
The Synthesis of Cyclic Enol Ethers via Molybdenum Alkylidene-Catalyzed Ring-Closing Metathesis (1994)

An efficient method for the construction of five- and six-membered cyclic vinyl ethers from unsaturated esters using stoichiometric titanium reagents to convert the esters to acyclic olefinic enol ethers which are then transformed to the desired products by catalytic ring-closing olefin metathesis with a molybdenum alkylidene complex is described.
Interactive Real-Time Simulation and Auralization for Modifiable Rooms (2014)

To study the effects of any changes to a room or setting on the room acoustics, a framework was developed that enables immediate acoustic and visual feedback to the user. This is achieved by running interactive room acoustics simulations and auralizations in real-time. Physically based binaural room impulse responses (BRIRs) are calculated using the image source method and ray tracing and are divided into direct sound, early reflections and late reverberation. Any part of the BRIR is updated as quickly as possible depending on the user's interaction with the scene. This includes changes to sources and receivers (positions/orientations/directivities/HRTF), to surface materials and to the room geometry itself. Using streaming low-latency convolution, an immediate feedback is provided to the user. A parallelization concept features multi-threading and networked PC-clusters, so that the workload can be effectively distributed, offering a scalability to simulate small to huge scenes, depending on the available computation power. For convenient scene design and interaction, a plug-in for Trimble SketchUp was developed that enables real-time room acoustics and room acoustics parameter visualization to this easy-to-use CAD modeling tool.
Release of macromolecules and daunomycin from hydrophilic gels containing enzymatically degradable bonds (1989)

The synthesis of hydrophilic gels based on N-(2-hydroxypropyl)methacrylamide copolymers crosslinked via degradable oligopeptide sequences is described. The influence of the conditions of preparation and of the gel structure on the equilibrium degree of swelling (network density) was determined. To evaluate the potential of such gels for controlled delivery of macromolecules and drugs, the release of FITC-dextrans of different molecular weights was studied and the rate of release was found to depend mainly on the equilibrium degree of swelling and not on the structure of the crosslinks. However, the degradation of the gels by a mixture of lysosomal enzymes isolated from rat liver (Tritosomes) or chymotrypsin was dependent on both the equilibrium degree of swelling and the structure of the crosslinks (length of the oligopeptide sequence and structure of the amino acid residues). The release of the anticancer drug daunomycin imbibed in gels was pH-dependent, the rate of release being higher at lower pH. In addition, a gel was synthesized which contained a pentapeptide in the crosslinks and daunomycin bound via a tetrapeptide side-chain, and in this case, incubation with Tritosomes led to degradation with simultaneous release of the drug.
Do ideal ao real (2018)

In this paper we intend to analyze the work of Washington Irving, The Legend of Sleepy Hollow (2011), in the light of the theory of representation, thought by Roger Chartier, which helps us in the following question: what are the images created by the author and which groups of individuals Are they being represented by them? That is, we intend to think about the projects in conflicts, whom Irving criticized and what his ideal of American, at a certain moment, from these representations. To bring to the discussion the political, economic and social moment that the United States lived at that time and how this space affects the relations between the different federative states of the Union, relations that generates the images created by Irving. Aiming at these objectives, around the central problematic, we will use the election of the two central characters of The Legend of the Sleepy Hollow and from there, we will think how the protagonist and antagonist relate to each other in the work and what, or who, they represent as characters
Elimination stabilized alkyls. Part III. Trimethylsilylmethyl and neopentyl alkyls of transition metals (1973)

Trimethylsilylmethyl (R) complexes R2[graphic omitted]SiMe3(M = Nb and Ta) and neopentyl (R′) complexes, MR′4(M = Ti andZr), R′3TaCl2 and Mo2R′6 are obtained by the interaction of Grignard or lithium reagents derived from chloromethyltrimethylsilane and neopentyl chloride with the appropriate metal halide 1H N.m.r. and i.r. spectra are reported.
Different Modes of Inhibitor Binding to Prolyl Hydroxylase by Combined Use of X-ray Crystallography and NMR Spectroscopy of Paramagnetic Complexes (2009)

In aqueous solution, azaquinolone inhibitors bind to prolyl 4-hydroxylase in two different orientations, as first detected by (19)F spectroscopy. This contrasts with the crystallographic structure where only one orientation has been determined. Dissection of the metal binding properties of the enzyme allowed structures of both complexes to be obtained in solution from (19)F and (13)C dipolar shifts in a labeled ligand.
Glutathione. 6. Probable mechanism of action of diazene antibiotics (1972)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGlutathione. 6. Probable mechanism of action of diazene antibioticsEdward M. Kosower and Tetsuo MiyaderaCite this: J. Med. Chem. 1972, 15, 3, 307–312Publication Date (Print):March 1, 1972Publication History Published online1 May 2002Published inissue 1 March 1972https://pubs.acs.org/doi/10.1021/jm00273a023https://doi.org/10.1021/jm00273a023research-articleACS PublicationsRequest reuse permissionsArticle Views155Altmetric-Citations33LEARN 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
Hybrid acrylate-oxetane photopolymerizable systems (2014)

Simultaneous free radical and cationic photopolymerizations of mixtures of multifunctional acrylate and oxetane monomers were carried out to provide hybrid interpenetrating network polymers. The use of “kick-started” oxetanes in which oxetane monomers are accelerated by the use of small amounts of certain highly substituted epoxides provides dual independent radical and cationic systems with similar rates of photopolymerization leading to homogeneous interpenetrating networks. The combined photopolymerizations are very rapid and afford crosslinked network films that are colorless, hard, and transparent. The networks display no indications of phase separation. The use of this technology in various applications such as coatings, 3D imaging, and for composites is discussed. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 594–601
Effects of Steam Injection on the Performance of Gas Turbine Power Cycles (1979)

The effect of injecting steam generated by exhaust gas waste heat into a gas turbine with 3060°R turbine inlet temperature has been analyzed. Two alternate steam injection cycles are compared with a combined cycle using a conventional steam bottoming cycle. A range of compression ratios (8, 12, 16, and 20) and water mass injection ratios (0 to 0.4) were analyzed to determine effect on net turbine power output per pound of air and cycle thermodynamic efficiency. A water/fuel cost tradeoff analysis is also provided. The results indicate promising performance and economic advantages of steam injected cycles relative to more conventional utility power cycles. Application to coal-fired configuration is briefly discussed.
Efficiency Enhancement of Light Modulators (1970)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text S. H. Rowe, "Efficiency Enhancement of Light Modulators," Appl. Opt. 9, 1222-1222 (1970) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Polar Codes are Optimal for Lossy Source Coding (2010)

We consider lossy source compression of a binary symmetric source using polar codes and a low-complexity successive encoding algorithm. It was recently shown by Arikan that polar codes achieve the capacity of arbitrary symmetric binary-input discrete memoryless channels under a successive decoding strategy. We show the equivalent result for lossy source compression, i.e., we show that this combination achieves the rate-distortion bound for a binary symmetric source. We further show the optimality of polar codes for various multiterminal problems including the binary Wyner-Ziv and the binary Gelfand-Pinsker problems. Our results extend to general versions of these problems.
Fashion Meets Computer Vision: A Survey (2020)

Fashion is the way we present ourselves to the world and has become one of the world's largest industries. Fashion, mainly conveyed by vision, has thus attracted much attention from computer vision researchers in recent years. Given the rapid development, this paper provides a comprehensive survey of more than 200 major fashion-related works covering four main aspects for enabling intelligent fashion: (1) Fashion detection includes landmark detection, fashion parsing, and item retrieval, (2) Fashion analysis contains attribute recognition, style learning, and popularity prediction, (3) Fashion synthesis involves style transfer, pose transformation, and physical simulation, and (4) Fashion recommendation comprises fashion compatibility, outfit matching, and hairstyle suggestion. For each task, the benchmark datasets and the evaluation protocols are summarized. Furthermore, we highlight promising directions for future research.
CARES: Computation-Aware Scheduling in Virtualized Radio Access Networks (2018)

In a virtualized radio access network (RAN), baseband processing is performed by software running in cloud-computing platforms. However, current protocol stacks were not designed to run in this kind of environment; the high variability on the computational resources consumed by RAN functions may lead to eventual computational outages (where frames are not decoded on time), severely degrading the resulting performance. In this paper, we address this issue by re-designing two key functions of the protocol stack: 1) scheduling, to select the transmission of those frames that do not result in computational outages, and 2) modulation and coding scheme (MCS) selection, to downgrade the selected MCS in case no sufficient computational resources are available. We formulate the resulting problem as a joint optimization and compute the (asymptotically) optimal solution to this problem. We further show that this solution involves solving an NP-hard problem, and propose an algorithm to obtain an approximate solution that is computationally efficient while providing bounded performance over the optimal. We thoroughly evaluate the proposed approach via simulation, showing that it can provide savings as high as 80% of the computational resources while paying a small price in performance.
Investigation of rarefied supersonic flows into rectangular nanochannels using a three-dimensional direct simulation Monte Carlo method (2010)

The rarefied flow of nitrogen with speed ratio (mean speed over most probable speed) of S=2,5,10, pressure of 10.132 kPa into rectangular nanochannels with height of 100, 500, and 1000 nm is investigated using a three-dimensional, unstructured, direct simulation Monte Carlo method. The parametric computational investigation considers rarefaction effects with Knudsen number Kn=0.481,0.962,4.81, geometric effects with nanochannel aspect ratios of (L/H) from AR=1,10,100, and back-pressure effects with imposed pressures from 0 to 200 kPa. The computational domain features a buffer region upstream of the inlet and the nanochannel walls are assumed to be diffusively reflecting at the free stream temperature of 273 K. The flow analysis is based on the phase space distributions while macroscopic flow variables sampled in cells along the centerline are used to corroborate the microscopic analysis. The phase-space distributions show the formation of a disturbance region ahead of the inlet due to slow particles backstreaming through the inlet and the formation of a density enhancement with its maximum inside the nanochannel. Velocity phase-space distributions show a low-speed particle population generated inside the nanochannel due to wall collisions which is superimposed with the free stream high-speed population. The mean velocity decreases, while the number density increases in the buffer region. The translational temperature increases in the buffer region and reaches its maximum near the inlet. For AR=10,100 nanochannels the gas reaches near equilibrium with the wall temperature. The heat transfer rate is largest near the inlet region where nonequilibrium effects are dominant. For Kn=0.481,0.962,4.81, vacuum back pressure, and AR=1, the nanoflow is supersonic throughout the nanochannel, while for AR=10,100, the nanoflow is subsonic at the inlet and becomes sonic at the outlet. For Kn=0.962, AR=1, and imposed back pressure of 120 and 200 kPa, the nanoflow becomes subsonic at the outlet. For Kn=0.962 and AR=10, the outlet pressure nearly matches the imposed back pressure with the nanoflow becoming sonic at 40 kPa and subsonic at 100 kPa. Heat transfer rates at the inlet and mass flow rates at the outlet are in good agreement with those obtained from theoretical free-molecular models. The flows in these nanochannels share qualitatively characteristics found in microflows and continuum compressible flows in channels with friction and heat loss.
Incidence and Cofactors of Hepatitis C Virus-related Hepatocellular Carcinoma: A Prospective Study of 12,008 Men in Taiwan (2003)

In a community-based prospective study, the authors examined the independent and interactive effects of hepatitis C virus (HCV) infection and cofactors, including hepatitis B virus (HBV) infection and lifestyle habits, on the incidence of hepatocellular carcinoma (HCC) in Taiwan. At baseline recruitment, subjects were evaluated with regard to second-generation HCV antibody (anti-HCV), hepatitis B surface antigen, and serum alanine aminotransferase, as well as cigarette smoking, alcohol drinking, and betel quid chewing habits. A total of 12,008 male residents aged 30-64 years without a history of HCC were included in the study. Between July 1990 and June 2001, 112 incident cases of HCC were identified among the subjects and included in the analysis. Persons with anti-HCV positivity alone had a 20-fold increased risk of developing HCC in comparison with those who were negative for anti-HCV. In statistical assessment of additive interaction, HCV and HBV tended to act independently in the pathogenesis of HCC. The results of this study suggest that HCV plays a significant role in hepatocarcinogenesis in an area endemic for chronic HBV infection.