gebhart/patrepeval huggingface dataset:
Gamut Mapping for Motion Picture (2010)

New technologies in capturing and displaying images with extended color gamut and new standards for wide color gamut color encoding enable a new market of extended-color-gamut content (cinema, television, video on demand, games, electronic documents). This paper addresses the scenario of introducing extended-color-gamut motion picture production, postproduction and distribution. One technical issue is the management and compatibility of different color gamuts. Manual (high-end) and automatic (consumer) color conversion tools are needed. For this purpose, we analyze in this paper different gamut mapping algorithms for motion picture type content. A psycho-physical evaluation framework is developed that is based on motion-picture related quality criteria aiming the preservation of the artistic intent and the optimal use of destination color gamut. We notably focus on gamut mapping algorithms that analyze geometrically both the source and the destination color gamut. A new method for automatic detection of the cusp of a color gamut is developed and used for cusp to cusp gamut mapping. The evaluation of several gamut mapping algorithms shows that best results are obtained for cusp to cusp mapping. According to the motion picture evaluation framework, the cusp to cusp gamut mapping algorithm performs significantly better, notably for night scenes and animated content.
Performance analysis of a multi-agent scheduling and control system under manufacturing disturbances (2004)

This paper is concerned with evaluating the performance of alternative multi-agent approaches to manufacturing planning and control. In order to separate the influence of ‘control algorithm’ from that of ‘control architecture’, a simple local control algorithm is chosen as a common starting point for developing the agent-based system. Two sets of experiments are then reported to evaluate how changes in individual agent characteristics can affect the control system's flexibility and adaptability against disturbances. These experiments show that the manufacturing and control system performance is not affected by architecture if the control algorithm remains fixed, however, altering the characteristics of the control system decision-makers influences both systems’ performance.
Acid-catalyzed-rearrangement of enol ester epoxides (1967)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAcid-catalyzed-rearrangement of enol ester epoxidesKenneth Lee Williamson, Judith I. Coburn, and Margaret F. HerrCite this: J. Org. Chem. 1967, 32, 12, 3934–3937Publication Date (Print):December 1, 1967Publication History Published online1 May 2002Published inissue 1 December 1967https://pubs.acs.org/doi/10.1021/jo01287a045https://doi.org/10.1021/jo01287a045research-articleACS PublicationsRequest reuse permissionsArticle Views225Altmetric-Citations30LEARN 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
Comparison of Pixelated CdZnTe, CdTe and Si Sensors With the Simultaneously Counting and Integrating CIX Chip (2009)

CIX is a direct converting hybrid pixel detector designed for medical X-ray imaging applications. Its key feature is the simultaneous counting and integrating of absorbed X-ray quanta, which offers, among other benefits, a large dynamic range as well as the opportunity to calculate the average photon energy of the absorbed spectrum. In this work several different Si, CdTe and CdZnTe sensors are characterized and their suitability as sensor materials for a combined counting and integrating system is assessed. The measurements indicate that temporal stability is an issue for the tested CdTe samples, both on short (ms) and long (s) timescales. Furthermore, the homogeneity of the detector response is addressed and interpreted in terms of lateral polarization. The influence of charge sharing and X-ray fluorescence in the sensor materials will be characterized and their impact on the average photon energy reconstruction will be illustrated through simulations and measurements.
Development of encapsulated lithium hydride thermal energy storage for space power systems (1987)

Inclusion of thermal energy storage in a pulsed space power supply will reduce the mass of the heat rejection system. In this mode, waste heat generated during the brief high-power burst operation is placed in the thermal store; later, the heat in the store is dissipated to space via the radiator over the much longer nonoperational period of the orbit. Thus, the radiator required is of significantly smaller capacity. Scoping analysis indicates that use of lithium hydride as the thermal storage medium results in system mass reduction benefits for burst periods as long as 800 s. A candidate design for the thermal energy storage component utilizes lithium hydride encapsulated in either 304L stainless steel or molybdenum in a packed-bed configuration with a lithium or sodium-potassium (NaK) heat transport fluid. Key issues associated with the system design include phase-change induced stresses in the shell, lithium hydride and shell compatibility, lithium hydride dissociation and hydrogen loss from the system, void presence and movement associated with the melt-freeze process, and heat transfer limitations on obtaining the desired energy storage density. 58 refs., 40 figs., 11 tabs.
The Effect of Crystallinity on the Rapid Pseudocapacitive Response of Nb<sub>2</sub>O<sub>5</sub> (2011)

Abstract Capacitive energy storage offers several attractive properties compared to batteries, including higher power, faster charging, and a longer cycle life. A key limitation to this electrochemical energy‐storage approach is its low energy density and, for this reason, there is considerable interest in identifying pseudocapacitor materials where faradaic reactions are used to achieve greater charge storage. This paper reports on the electrochemical properties of Nb 2 O 5 and establishes that crystalline phases of the material undergo fast faradaic reactions that lead to high specific capacitance in short charging times. In particular, the specific capacitance for the orthorhombic phase at infinite sweep rate reaches ≈400 F g −1 , which exceeds that of birnessite MnO 2 in nonaqueous electrolyte and is comparable to RuO 2 at the same extrapolated rate. The specific capacitances of the orthorhombic and pseudohexagonal phases are much greater than that of the amorphous phase, suggesting that the faradaic reactions which lead to additional capacitive energy storage are associated with Li + insertion along preferred crystallographic pathways. The ability for Nb 2 O 5 to store charge at high rates despite its wide bandgap and low electronic conductivity is very different from what is observed with other transition metal oxides.
Interplay of viral and cellular proteins along the long control region of human papillomavirus type 18 (1988)

The long control region of human genital papillomavirus type 18 harbors transcription regulatory elements, such as the E6 promoter and a cell type-specific enhancer independent of the E2 protein. By performing DNase I footprint experiments in vitro with protein extracts from different cell lines and tissues we searched for cellular factors interacting with the totality of the control region. We detected a total of eight different protected sites; most of them were found with all the extracts. Two of these sites, one in the enhancer and the other in the sequences proximal to the E6 cap site, interact with a member of the activator protein 1 family. However, in the absence of fine mutational analysis, we cannot readily discern an exact functional role for the different binding sites. We also characterized two regions, which are protected only in the presence of E2, corresponding to the perfect palindromes ACCGN4CGGT and present either 500 nucleotides or tandemly repeated about 70 nucleotides upstream of the E6 cap site. This last protected area covers a large part of the putative TATA box of the E6 promoter and could explain its repression by bovine papilloma virus type 1 E2, which could interfere with binding of the TFII D ubiquitous transcription factor to the TATA sequence of the promoter.
Binomio bibliotecario-usuario en las modalidades de educación a distancia (2010)

Este artículo tiene el propósito de servir como un acercamiento al mundo de los servicios y colecciones de las bibliotecas universitarias digitales en México, y conocer desde diferentes perspectivas cómo se da el binomio bibliotecario-usuario en las modalidades de educación a distancia. A través de una investigación bibliográfica y de campo, se brinda un panorama sobre el papel que han seguido las bibliotecas universitarias digitales como apoyo a las modalidades educativas a distancia y como ve la sociedad de la información a éstas dentro del proceso enseñanza - aprendizaje. El trabajo está estructurado en tres apartados: en el primero se reflexiona sobre el rol del bibliotecario en el entorno digital y cómo es su papel para beneficiar a las modalidades educativas a distancia; en el segundo se muestran las características de los usuarios de una modalidad a distancia; y en el tercero se exhibe las interacciones entre ambos y algunas propuestas sobre cómo mejorar el binomio bibliotecario-usuario para beneficio de las modalidades de educación a distancia.
Statistical Design and Performance of High-Sensitivity Frequency-Feedback Receivers (1963)

Current interest in high-sensitivity receivers for frequency modulation is centered around two implementations of the device: phase-lock and frequency-feedback. Enloe and later Cahn presented linearized frequency-feedback receiver design theory based on a twin threshold concept. This paper presents the derivation of a quasi-linear model for the frequency-feedback receiver for the situation of Gaussian signals and noise. A statistical optimization is then performed giving the loop transfer function and threshold performance for a maximum sensitivity receiver. The design theory is based on a single threshold concept deviating from previous twin threshold approach. It is shown that in an optimum design the modulation error is less than 1 rad. This allows the use of a narrow-band IF filter and obviates the need to consider threshold characteristics of the discriminator within the loop. A significant result of this analysis is that although the quasi-linear receiver models differ in detail, threshold for a maximum sensitivity FM feedback and for a phase-lock receiver is identical. It was found that in FM feedback, as previously determined by Develet for the phase-lock receiver, threshold occurs at 10 log10(e)= 4.34 db above the ultimate limit determined by information theory arguments. This 4.34-db degradation is independent of modulation index. It is anticipated that the results in this paper will free the design engineer from concern about which device is theoretically better and allow his choice to be influenced solely by hardware considerations.
Liquid Chromatographic Determination of Apple Pulp Procyanidins (1992)

Abstract Apple pulp procyanidins are separated by means of liquid column chromatography on Sephadex LH-20 and analysed by RP-HPLC. Three dimers and three trimers are identified by acid hydrolysis and formation of derivatives with phloroglucinol.
Green ThinGaN power‐LED demonstrates 100 lm (2008)

Abstract Recent progress in the epitaxy of InGaN LEDs leads to a significant improvement of output power for green LEDs: 100 lm at 350 mA and 189 lm at 1 A are demonstrated for a 1 mm 2 ThinGaN Chip at 531 nm, mounted in an OSRAM Dragon package with spherical silicone lens and OSRAM Argus lens. The chip is especially designed for low current applications like LCD backlighting where high efficiencies are needed. Efficacies of 123 lm/W at 100 mA and 80 lm/W at 350 mA have been achieved with this LED. The Influence of Multi Quantum Well emission on LED brightness was investigated in respect of driving current and temperature. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
An End-to-End Multimodal Voice Activity Detection Using WaveNet Encoder and Residual Networks (2019)

Recently, there has been growing use of deep neural networks in many modern speech-based systems such as speaker recognition, speech enhancement, and emotion recognition. Inspired by this success, we propose to address the task of voice activity detection (VAD) by incorporating auditory and visual modalities into an end-to-end deep neural network. We evaluate our proposed system in challenging acoustic environments including high levels of noise and transients, which are common in real-life scenarios. Our multimodal setting includes a speech signal captured by a microphone and a corresponding video signal capturing the speaker's mouth region. Under such difficult conditions, robust features need to be extracted from both modalities in order for the system to accurately distinguish between speech and noise. For this purpose, we utilize a deep residual network, to extract features from the video signal, while for the audio modality, we employ a variant of WaveNet encoder for feature extraction. The features from both modalities are fused using multimodal compact bilinear pooling to form a joint representation of the speech signal. To further encode the temporal information, we feed the fused signal to a long short-term memory network and the system is then trained in an end-to-end supervised fashion. Experimental results demonstrate the improved performance of the proposed end-to-end multimodal architecture compared to unimodal variants for VAD. Upon the publication of this paper, we will make the implementation of our proposed models publicly available at https://github.com/iariav/End-to-End-VAD and https://israelcohen.com.
Hidden overflow pathway to L-phenylalanine in Pseudomonas aeruginosa (1983)

Pseudomonas aeruginosa is representative of a large group of pseudomonad bacteria that possess coexisting alternative pathways to L-phenylalanine (as well as to L-tyrosine). These multiple flow routes to aromatic end products apparently account for the inordinate resistance of P. aeruginosa to end product analogs. Manipulation of carbon source nutrition produced a physiological state of sensitivity to p-fluorophenylalanine and m-fluorophenylalanine, each a specific antimetabolite of L-phenylalanine. Analog-resistant mutants obtained fell into two classes. One type lacked feedback sensitivity of prephenate dehydratase and was the most dramatic excretor of L-phenylalanine. The presence of L-tyrosine curbed phenylalanine excretion to one-third, a finding explained by potent early-pathway regulation of 3-deoxy-D-arabinoheptulosonate 7-phosphate (DAHP) synthase-Tyr (a DAHP synthase subject to allosteric inhibition by L-tyrosine). The second class of regulatory mutants possessed a completely feedback-resistant DAHP synthase-Tyr, the major species (greater than 90%) of two isozymes. Deregulation of DAHP synthase-Tyr resulted in the escape of most chorismate molecules produced into an unregulated overflow route consisting of chorismate mutase (monofunctional), prephenate aminotransferase, and arogenate dehydratase. In the wild type the operation of the overflow pathway is restrained by factors that restrict early-pathway flux. These factors include the highly potent feedback control of DAHP synthase isozymes by end products as well as the strikingly variable abilities of different carbon source nutrients to supply the aromatic pathway with beginning substrates. Even in the wild type, where all allosteric regulation in intact, some phenylalanine overflow was found on glucose-based medium, but not on fructose-based medium. This carbon source-dependent difference was much more exaggerated in each class of regulatory mutants.
Norspermidine Is Not a Self-Produced Trigger for Biofilm Disassembly (2014)

Formation of Bacillus subtilis biofilms, consisting of cells encapsulated within an extracellular matrix of exopolysaccharide and protein, requires the polyamine spermidine. A recent study reported that (1) related polyamine norspermidine is synthesized by B. subtilis using the equivalent of the Vibrio cholerae biosynthetic pathway, (2) exogenous norspermidine at 25 μM prevents B. subtilis biofilm formation, (3) endogenous norspermidine is present in biofilms at 50-80 μM, and (4) norspermidine prevents biofilm formation by condensing biofilm exopolysaccharide. In contrast, we find that, at concentrations up to 200 μM, exogenous norspermidine promotes biofilm formation. We find that norspermidine is absent in wild-type B. subtilis biofilms at all stages, and higher concentrations of exogenous norspermidine eventually inhibit planktonic growth and biofilm formation in an exopolysaccharide-independent manner. Moreover, orthologs of the V. cholerae norspermidine biosynthetic pathway are absent from B. subtilis, confirming that norspermidine is not physiologically relevant to biofilm function in this species.
Issue Costs in Fisher's Two‐Period Model (1990)

Abstract This paper analyzes the impact of issue costs on firm investment and dividend policies within the context of the two‐period Fisher model. Consistent with its pedagogical tone, the paper illustrates graphically the loss in value stemming from a high dividend payout by a firm subject to issue costs in its external financing. Two components compose the overall loss in value. The “substitution effect” results from a shift in the investment opportunity set, while the “wealth effect” stems from the loss in value owing to issue costs. The paper suggests that the firm, when increasing its dividend payout, must weigh the marginal loss in firm value against the offsetting benefits, which may take the form of reduced monitoring costs.
Age at onset and gender of schizophrenic patients in relation to neuroleptic resistance (1997)

These results confirm previous data indicating neuroleptic resistance is associated with early onset. The finding that the difference in age at onset between males and females is smaller in neuroleptic-resistant patients than in neuroleptic-responsive patients suggests that neuroleptic-resistant patients differ premorbidly as well as after onset of illness.
Electrical characteristics of graphene for nano-sized coplanar waveguide (2011)

This Graphene is a two-dimensional material with one-atom thickness, high carrier mobility and high thermal conductivity. The resistance of graphene can be tuned in the range of 30~100Ω by adjusting its dc bias, which have wide applications in RF circuit design. Its extraordinary features provide a new extension for the next generation of high-speed electronic integrated circuits. In this paper, the electrical performance of a graphene based-coplanar waveguide structure is analyzed, where the graphene flake sandwiched between the coplanar waveguide and the isolator is presented by using two parallel RC lumped circuits slotted in the signal electrode and the ground electrodes. Furthermore, the effect of the graphene's position in coplanar waveguide on the microwave characteristics of the structure has been analyzed.
Oncolytic adenoviruses as antiglioma agents (2006)

The treatment for malignant gliomas is suboptimal. Oncolytic adenoviruses hold the promise of being effective agents for the treatment of solid tumors. Importantly, the first oncolytic viral therapy has just been approved for use in combination with chemotherapy for late-stage refractory nasopharyngeal cancer by the Chinese State FDA, following a successful Phase III randomized clinical trial. The concept underlying treatment with oncolytic adenoviruses is based on cancer selectivity by confining viral replication and infectivity to cancer cells. For this purpose, the main strategies used currently to modify the viruses include: functional deletions in essential viral genes; tumor- or tissue-specific promoters used to control the expression of these viral genes; and tropism modification to redirect adenovirus to the cancer cell surface. In the near future, oncolytic adenoviruses need to be optimized to fully realize their potential as critical anticancer tools and, thus, improve the prognosis for patients with malignant gliomas.
Accelerated 2D magnetic resonance spectroscopy of single spins using matrix completion (2015)

Two dimensional nuclear magnetic resonance (NMR) spectroscopy is one of the major tools for analysing the chemical structure of organic molecules and proteins. Despite its power, this technique requires long measurement times, which, particularly in the recently emerging diamond based single molecule NMR, limits its application to stable samples. Here we demonstrate a method which allows to obtain the spectrum by collecting only a small fraction of the experimental data. Our method is based on matrix completion which can recover the full spectral information from randomly sampled data points. We confirm experimentally the applicability of this technique by performing two dimensional electron spin echo envelope modulation (ESEEM) experiments on a two spin system consisting of a single nitrogen vacancy (NV) centre in diamond coupled to a single (13)C nuclear spin. The signal to noise ratio of the recovered 2D spectrum is compared to the Fourier transform of randomly subsampled data, where we observe a strong suppression of the noise when the matrix completion algorithm is applied. We show that the peaks in the spectrum can be obtained with only 10% of the total number of the data points. We believe that our results reported here can find an application in all types of two dimensional spectroscopy, as long as the measured matrices have a low rank.
Simple and fast technique for measuring dielectric constant of polymers at microwave frequencies (1981)

A simple, fast technique for accurate measurement of dielectric constant of polymers at microwave frequencies is presented. The measurement of the wavelength of the microwave signal on the surface of the dielectric rod with the diameter D = λg directly determines the dielectric constant. Results for teflon, perspex, nylon, etc. in the X band (8.5–12.8 GHz) are also presented.
The Game of Twenty Questions (2017)

A production system's printed logs are often the only source of runtime information available for postmortem debugging, performance analysis and profiling, security auditing, and user behavior analytics. Therefore, the quality of this data is critically important. Recent work has attempted to enhance log quality by recording additional variable values, but logging statement placement, i.e., where to place a logging statement, which is the most challenging and fundamental problem for improving log quality, has not been adequately addressed so far. This position paper proposes we automate the placement of logging statements by measuring how much uncertainty, i.e., the expected number of possible execution code paths taken by the software, can be removed by adding a logging statement to a basic block. Guided by ideas from information theory, we describe a simple approach that automates logging statement placement. Preliminary results suggest that our algorithm can effectively cover, and further improve, the existing logging statement placements selected by developers. It can compute an optimal logging statement placement that disambiguates the entire function call path with only 0.218% of slowdown.