gebhart/patrepeval huggingface dataset:
Portable Trust: biometric-based authentication and blockchain storage for self-sovereign identity systems (2017)

We devised a mobile biometric-based authentication system only relying on local processing. Our Android open source solution explores the capability of current smartphones to acquire, process and match fingerprints using only its built-in hardware. Our architecture is specifically designed to run completely locally and autonomously, not requiring any cloud service, server, or permissioned access to fingerprint reader hardware. It involves three main stages, starting with the fingerprint acquisition using the smartphone camera, followed by a processing pipeline to obtain minutiae features and a final step for matching against other locally stored fingerprints, based on Oriented FAST and Rotated BRIEF (ORB) descriptors. We obtained a mean matching accuracy of 55%, with the highest value of 67% for thumb fingers. Our ability to capture and process a finger fingerprint in mere seconds using a smartphone makes this work usable in a wide range of scenarios, for instance, offline remote regions. This work is specifically designed to be a key building block for a self-sovereign identity solution and integrate with our permissionless blockchain for identity and key attestation.
A novel high performance voltage regulator module (2002)

A novel voltage regulator module for the next generation of microprocessors is proposed in this paper. The proposed topology can improve the load step-down transients as well as step-up without increasing output filter capacitors. Furthermore, the energy stored in the inductor can be transferred back to the source. Simulation and experiment results verify the theoretical analysis.
ChemInform Abstract: Investigation of Mixed Divalent Cation Phosphates: Synthesis and X‐Ray Powder Structure Determination of CdBa<sub>2</sub>(P<sub>2</sub>O<sub>7</sub>)(HPO<sub>4</sub>). (2000)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Building and evaluation of a real room impulse response dataset (2019)

This paper presents BUT ReverbDB-a dataset of real room impulse responses (RIR), background noises, and retransmitted speech data. The retransmitted data include LibriSpeech test-clean, 2000 HUB5 English evaluation, and part of 2010 NIST Speaker Recognition Evaluation datasets. We provide a detailed description of RIR collection (hardware, software, post-processing) that can serve as a “cook-book” for similar efforts. We also validate BUT ReverbDB in two sets of automatic speech recognition (ASR) experiments and draw conclusions for augmenting ASR training data with real and artificially generated RIRs. We show that a limited number of real RIRs, carefully selected to match the target environment, provide results comparable to a large number of artificially generated RIRs, and that both sets can be combined to achieve the best ASR results. The dataset is distributed for free under a non-restrictive license and it currently contains data from eight rooms, which is growing. The distribution package also contains a Kaldi-based recipe for augmenting publicly available AMI close-talk meeting data and test the results on an AMI single distant microphone set, allowing it to reproduce our experiments.
Neuroprotective Properties of Green Tea (Camellia sinensis) in Parkinson’s Disease: A Review (2020)

Neurodegenerative disease is a collective term given for the clinical condition, which results in progressive degeneration of neurons and the loss of functions associated with the affected brain region. Apart from the increase in age, neurodegenerative diseases are also partly affected by diet and lifestyle practices. Parkinson's disease (PD) is a slow onset neurodegenerative disorder and the second most common neurodegenerative disease, which affects the motor system. Although there is no prescribed treatment method to prevent and cure PD, clinical procedures help manage the disease symptoms. Green tea polyphenols are known for several health benefits, including antioxidant, anti-inflammatory, and neuroprotective activity. The current manuscript summarizes the possible mechanisms of neuroprotective potential of green tea with a special focus on PD. Studies have suggested that the consumption of green tea protects against free-radicals, inflammation, and neuro-damages. Several in vivo studies aid in understanding the overall mechanism of green tea. However, the same dose may not be sufficient in humans to elicit similar effects due to complex physiological, social, and cultural development. Future research focused on more clinical trials could identify an optimum dose that could impart maximum health benefits to impart neuroprotection in PD.
Workshop on patent retrieval SIGIR 2000 workshop report (2000)

article Free Access Share on Workshop on patent retrieval SIGIR 2000 workshop report Authors: Noriko Kando National Institute of Informatics (NII), Tokyo, Japan National Institute of Informatics (NII), Tokyo, JapanView Profile , Mun-Kew Leong BIGonthenet.com, Singapore BIGonthenet.com, SingaporeView Profile Authors Info & Claims ACM SIGIR ForumVolume 34Issue 1April 2000 pp 28–30https://doi.org/10.1145/373593.373621Online:01 April 2000Publication History 17citation283DownloadsMetricsTotal Citations17Total Downloads283Last 12 Months3Last 6 weeks0 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF
High-performance crystal oscillator circuits: theory and application (1988)

A general theory that allows the accurate linear and nonlinear analysis of any crystal oscillator circuit is presented. It is based on the high Q of the resonator and on a very few nonlimiting assumptions. The special case of the three-point oscillator, that includes Peirce and one-pin circuits, is analyzed in more detail. A clear insight into the linear behavior, including the effect of losses, is obtained by means of the circular locus of the circuit impedance. A basic condition for oscillation and simple analytic expressions are derived in the lossless case for frequency pulling, critical transconductance, and start-up time constant. The effects of nonlinearities on amplitude and on frequency stability are analyzed. As an application, a 2-MHz CMOS oscillator which uses amplitude stabilization to minimize power consumption and to eliminate the effects of nonlinearities on frequency is described. The chip, implemented in a 3- mu m p-well low-voltage process, includes a three-stage frequency divider and consumes 0.9 mu A at 1.5 V. The measured frequency stability is 0.05 p.p.m./V in the range 1.1-5 V of supply voltage. Temperature effect on the circuit itself is less than 0.1 p.p.m. from -10 to +60 degrees C.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Enhanced production of LPS-induced cytokines during differentiation of human monocytes to macrophages. Role of LPS receptors. (1993)

In vitro cultivated human monocytes isolated from normal peripheral blood show a time-dependent differentiation into macrophages characterized by an increased expression of transferrin receptors, CD11/CD18, and CD14 Ag. We measured the secretion of TNF-alpha and IL-6 in freshly isolated monocytes and in differentiated macrophages after LPS treatment. Differentiated macrophages produced significantly higher amounts of TNF-alpha and IL-6 than freshly isolated monocytes. This increased secretion was not a result of an enhanced accumulation of TNF-alpha and IL-6 mRNA, as comparative levels of these transcripts were found in both cell types after LPS treatment. Furthermore, LPS did not induce an antiviral state to VSV3 in monocytes, but it reduced by 3 to 5 log10 the virus yield in differentiated macrophages. The addition of antibodies to IFN-beta completely inhibited the LPS-induced antiviral state to VSV, but antibodies to IFN-alpha, TNF-alpha, or IL-6 were ineffective. A marked accumulation of IFN-beta mRNA was found in both cell types after LPS treatment. Binding experiments with FITC-LPS revealed a slightly higher overall binding affinity for LPS in freshly explanted monocytes as compared with differentiated macrophages, even though the maximal binding was higher in macrophages. In both cell types, the LPS binding was partially inhibited by antibodies to CD14. These results demonstrate that: 1) in vitro differentiation of human monocytes to macrophages leads to an enhanced LPS response in terms of (a) progressive increase of IL-6/TNF-alpha production and (b) acquisition of an IFN-beta mediated antiviral state; 2) this enhanced response to LPS, largely CD14-independent, is not linked to any increased accumulation of cytokine mRNA, but is probably a result of an increased synthesis and/or secretion of these cytokines.
ChemInform Abstract: Synthesis and Fluorescence Tuning of Novel Nitroxides with a Binaphthyl Framework. (2011)

Abstract The title compounds (I) could serve as a redox fluorescence switch.
Remotely Controlled Red Blood Cell Carriers for Cancer Targeting and Near‐Infrared Light‐Triggered Drug Release in Combined Photothermal–Chemotherapy (2015)

Red blood cells (RBCs), the “innate carriers” in blood vessels, are gifted with many unique advantages in drug transportation over synthetic drug delivery systems (DDSs). Herein, a tumor angiogenesis targeting, light stimulus‐responsive, RBC‐based DDS is developed by incorporating various functional components within the RBC platform. An albumin bound near‐infrared (NIR) dye, together with a chemotherapy drug doxorubicin, is encapsulated inside RBCs, the surfaces of which are modified with a targeting peptide to allow cancer targeting. Under stimulation by an external NIR laser, the membrane of the RBCs would be destroyed by the light‐induced photothermal heating, resulting in effective drug release. As a proof of principle, RBC‐based cancer cell targeted drug delivery and light‐controlled drug release is demonstrated in vitro, achieving a marked synergistic therapeutic effect through the combined photothermal–chemotherapy. This work presents a novel design of smart RBC carriers, which are inherently biocompatible, promising for targeted combination therapy of cancer.
Characterization and specific assay for a galactoside β‐3‐galactosyltransferase of human kidney (1988)

Two galactosyltransferases identified as UDP-galactose:lactose (lactosylceramide) alpha-4- and beta-3-galactosyltransferases [Bailly P. et al. (1986) Biochem. Biophys. Res. Commun. 141, 84-91] have been characterized in human kidney microsomes. Using methyl beta-D-galactoside as acceptor substrate, we have determined the experimental conditions (pH 5.0, 4 mM Cd2+) in which only the beta-3-galactosyltransferase activity is detectable. The reaction product has been characterized by chemical methods and glycosidase studies. Under these experimental conditions, some of the enzyme properties have been further investigated. Apparent Km values are for UDP-galactose, 0.170 mM; for lactose, 242 mM; and for lactosylceramide, 2.5 mM. Acceptor specificity studies suggest that the beta-3-galactosyltransferase is specific for terminal Gal beta 1-4Glc(NAc) residues and responsible for elongation of oligosaccharide chains in glycolipids. Competition studies with lactose and N-acetylgalactosamine as acceptor substrates indicate that the transferase described here can be distinguished from the UDP-galactose:2-acetamide-2-deoxy-D-galactose beta-3-galactosyltransferase and therefore represents a novel enzyme capable of synthesizing unusual carbohydrate structures similar to those which accumulate in certain neurological diseases.
Magnetic hysteresis in thin film dc SQUID magnetometers (1992)

Measurements of the magnetic hysteresis of thin film dc SQUID magnetometers in applied magnetic fields up to 1 mT are reported herein. The hysteresis characteristic for the 77 K YBaCuO high Tc SQUIDS has a similar behavior to that of low Tc Nb thin film SQUIDs operating at 4.2 K. A quadratic dependence on the amplitude of the sweeping field was found in the high field limit.
[Mercury contents and distribution characteristics in cicadae]. (2010)

Total mercury contents of cicadae bodies, wings and exuviaes were studied in Huludao City to discuss mercury distribution characteristics in cicadae and to reveal the environmental mercury accumulation effects in the long life-cycle insects through comparing cicadae with other insect species. The average mercury contents of cicadae bodies were 2. 64 mg x kg(-1) and much higher than those in the contrast sites (1.00 mg x kg(-1) on average) in Huludao City. Mercury contents were found in the order of cicadae bodies > wings (0.98 mg x kg(-1) on average) > exuviaes (0.50 mg x kg(-1) on average). Sex differences of mercury contents and body weights of cicadae were significantly great. The females had larger body weights (1.11 g on average) and lower mercury contents (1.34 mg x kg(-1) on average) than the males (body weight: 0.54 g on average; mercury contents: 3.38 mg x kg(-1) on average), respectively. Mercury contents of cicada's bodies varied greatly with sample sites, mercury contents of wings changed little. No significant correlation was found between mercury contents of soil and cicadae bodies. Mercury contents of cicadae were lower than those of dragonflies, higher than those of other insects with shorter life-cycle periods and it reflected the accumulation effects of environmental mercury in the long life-cycle insects such as cicadae.
Catalytic Wet Oxidation in Three-Phase Moving-Bed Reactors: Modeling Framework and Simulations for On-Stream Replacement of a Deactivating Catalyst (2012)

Phenol wet oxidation over deactivating catalysts in three-phase moving-bed reactors was simulated by formulating and solving a two-scale, nonisothermal, non-steady-state model to highlight the strength of on-stream catalyst replacement, in comparison to catalyst-batch fixed-bed reactors. Simulation results indicate that three-phase moving-bed reactors offer a promising alternative to fixed-bed reactors. The autonomy of fixed-bed reactors is limited due to severe reduction of catalyst activity, while in moving-bed reactor configurations, the decline of pollutant conversion is reduced with increased solid velocity, to compensate for the decrease in catalyst activity loss. The fixed-bed reactor operates in non-steady-state mode, because of the continuous decline of catalyst activity while moving-bed reactors evolve to steady-state operation after a transient period. Decreasing the reactor feed phenol concentration and increasing liquid residence time in the reactor and feed temperature are the best ways to oppose rapid deactivation of catalyst in moving-bed reactors.
RELATIVE COMPACTION STUDY - FINAL REPORT (1971)

AN INVESTIGATION IS PRESENTED OF THE PRINCIPLES INVOLVED IN DETERMINATION OF PERCENT RELATIVE COMPACTION WHEN USING A STATISTICAL AREA CONCEPT METHOD. SOME OF THE VARIABLES INVOLVED WITH THE NUCLEAR GAGE WERE ALSO STUDIED. THE FACTORS INVOLVED WERE THE WET WEIGHT METHOD, COMPOSITE TEST MAXIMUM DENSITY, USE OF A STATISTICAL RANGE OF TEST MAXIMUM VALUES, COMPARISON OF STANDARD LABORATORY AND FIELD METHODS OF CALIBRATING A NUCLEAR GAGE AND VARIATIONS DUE TO TESTING AT DIFFERENT GAGE DEPTHS. IT IS CONCLUDED THAT THE FIELD USE OF THE WET METHOD AND COMPOSITE TEST MAXIMUM DENSITY ARE GOOD. THE USE OF A STATISTICAL RANGE OF VALUES APPEARS FEASIBLE FOR UNIFORM MATERIALS. THE CORRELATION OF STANDARD LABORATORY AND FIELD METHODS OF CALIBRATION IS GENERALLY GOOD FOR DENSITY BUT NOT FOR MOISTURE. THE DIFFERENCE IN TEST VALUES DUE TO TESTING AT DIFFERENT DEPTHS IS POOR. DENSITY AND MOISTURE DETERMINATIONS FROM ONE ONE-MINUTE GAGE READING ARE COMPARABLE TO THE DETERMINATION MADE FROM THE AVERAGE OF TWO ONE-MINUTE READINGS. /AUTHOR/
La instrumentación de la política monetaria en España (1976)

Automated methods are described for tracing and analysis of changes in angiogenic vasculature imaged by a multiphoton laser-scanning confocal microscope. Utilizing chronic animal window models, time series of in vivo 3-D images were acquired on approximately the same target volume of the same specimen while undergoing angiogenic change (typically every 24 h for 7 days). Objective, precise, 3-D, rapid, and fully automated vessel morphometry was performed using an adaptive tracing algorithm that is based on a generalized irregular cylinder model of the vasculature. This algorithm was found to be not only adaptive enough for tracing angiogenic vasculature, but also very efficient in its use of computer memory, and fast, taking less than 1 min to trace a 768 x 512 x 32, 8-bit/pixel 3-D image stack on a Dell Pentium III 1-GHz computer. The automatically traced centerlines were manually validated on six image stacks and the average spatial error was measured to be 2 pixels, with an average concordance of 81% between manual and automated traces on a voxel basis. The tracing output includes geometrical statistics of traced vasculature and serves as the basis of statistical change analysis. The computer methods described here are designed to be scalable to much larger hypothesis testing studies involving quantitative measurements of tumor angiogenesis, gene expression relative to known vascular structures, and impact of drug delivery.
REPRODUCIBLE LIQUID JUNCTION POTENTIALS: THE FLOWING JUNCTION.<sup>1</sup> (1920)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTREPRODUCIBLE LIQUID JUNCTION POTENTIALS: THE FLOWING JUNCTION.1Arthur B. Lamb and Alfred T. LarsonCite this: J. Am. Chem. Soc. 1920, 42, 2, 229–237Publication Date (Print):February 1, 1920Publication History Published online1 May 2002Published inissue 1 February 1920https://pubs.acs.org/doi/10.1021/ja01447a004https://doi.org/10.1021/ja01447a004research-articleACS PublicationsRequest reuse permissionsArticle Views56Altmetric-Citations22LEARN 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
Modulating phenotype and cytokine production of leucocytic retinal infiltrate in experimental autoimmune uveoretinitis following intranasal tolerance induction with retinal antigens (1999)

Leucocytic infiltrate is not only reduced in number but its distinct phenotype compared with controls implies a reduced activation status of infiltrating monocyts to accompany increased IL-10 and reduced IFN-gamma production in tolerised animals. This modulation may in turn contribute towards protection against target organ destruction in EAU.
Inhibition of virus-encoded thymidine kinase suppresses herpes simplex virus replication in vitro and in vivo. (1998)

Both herpes simplex virus type 1 (HSV-1) and HSV-2 encode a thymidine kinase enzyme which differs from cellular thymidine kinase in substrate specificity. Viral thymidine kinase enables the virus to replicate in cells that lack cellular thymidine kinase, namely those of the sensory neurons where the virus establishes, and periodically reactivates from, a latent state. Thymidine kinase-dependent HSV replication following viral reactivation at the site of latency is thought to precede the emergence of virus at mucosal surfaces. The ability to inhibit such an essential viral enzyme would potentially prevent HSV from replicating within neuronal tissue, and thus stop the recurrent disease cycle. Ro 32-2313 was designed as a selective and competitive inhibitor of HSV thymidine kinase and in vitro studies have confirmed this mechanism of action. In vivo evaluation of a soluble prodrug of Ro 32-2313, Ro 32-4397, was undertaken in murine models where pathogenesis was dependent upon viral replication in neuronal tissue. It was shown that in vivo administration of Ro 32-4397 (i) significantly reduced the viral titre detected in isolated dorsal root ganglia; (ii) prevented HSV-2-induced lethality in a systemic infection model; and (iii) reduced zosteriform lesion development in a model of dermal infection. Administration of Ro 32-4397 produced dose-related changes in viral pathogenicity towards those of the phenotype of a thymidine kinase-deficient virus. Overall, the study confirmed that thymidine kinase inhibitors can suppress the replication of HSV in vivo, and suggest that such inhibitors may reduce reactivation of the virus from latency if used prophylactically in recurrent HSV infection.
Advanced Communications Technology Satellite (ACTS) (2003)

The authors provide an overview of the NASA Advanced Communications Technology Satellite (ACTS) and discuss the value of the technology for future communication systems. The high-risk technologies selected for ACTS were those having the potential to dramatically enhance the capabilities of the satellite communications industry. This experimental satellite, which is scheduled to be launched in 1992, will furnish very small aperture terminal digital networks which provide on-demand full mesh connectivity, 1.544 Mb/s services with only a single hop. Utilizing on-board switching and processing, each individual voice or data circuit can be separately routed to any location in the network.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Effect of Age, Breast Density, and Family History on the Sensitivity of First Screening Mammography (1996)

The sensitivity of modern mammography is highest among women aged 50 years and older who have primarily fatty breast density. Sensitivity is lowest among women younger than 50 years and particularly low when the time between screenings is about 2 years or when women have a family history of breast cancer, possibly because of rapid tumor growth.
An extremely robust turbo coded HF modem (2002)

We propose an extremely robust, low rate HF modem for military radio communications. The modem design is based on the existing DSTO chirp modem which uses a half rate, memory length ten convolutional code together with a soft decision Viterbi decoder. The proposed modem replaces the current convolutional codec with a turbo codec. The problems of frame synchronisation, noise variance estimation and metric optimisation have been solved in order to implement the modem. The turbo coded chirp modem outperforms the convolutionally-coded chirp modem by more than one dB on the AWGN channel and more than two dB on HF test channels.