gebhart/patrepeval huggingface dataset:
Low Feedback Sampling Rate Digital Predistortion for Wideband Wireless Transmitters (2016)

A novel digital predistortion (DPD) with an ultralow feedback sampling rate is proposed for wideband wireless communications. Analytical groundwork is carried out to support the rationale of the proposed method. Due to the power amplifier (PA) spectral expansion, the sampling rate of the feedback loop in the DPD architecture generally requires several times the input signal bandwidth, which presents challenges for the analog-to-digital converter, especially in broadband applications. In order to remove this bottleneck in real-world implementation, a forward behavioral modeling method with low-rate aliasing PA output signals is adopted to estimate the model coefficients. The obtained coefficients are then used to predict the high-rate PA output, using the input signal with an adequate sampling rate, and to further generate the predistorter for the nonlinear PA with the conventional indirect learning architecture. To validate the proposed method, different PAs driven with a 40-MHz two-carrier Long Term Evolution are used for linearization purposes. Experimental results based on the instrument platform show that the proposed algorithm achieves almost equivalent results with only a 2.5 Msamples/s feedback sampling rate. Further experimental verification is also demonstrated on an FPGA platform, which achieves an adjacent channel power ratio that is better than -47 dBc for 40-MHz signals with a feedback sampling rate of 20 Msamples/s.
Investigation of Electron Beam Deposition Parameters Within a Scanning Electron Microscope (2018)

An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.
Novel Noninvasive Breath Test Method for Screening Individuals at Risk for Diabetes (2009)

We thank Dr. Davidson (1) for his insightful alternative to the interpretation of our results (2). While the validity of the breath test method to distinguish between individuals with normal glucose tolerance (NGT) and pre-diabetes and early-stage diabetes (PDED) is not affected by this interpretation, he brings up a valid point that tracer dilution due to differences in fasting glucose may influence the appearance of 13CO2 in breath. However, we argue that the shapes of the …
Time Series Analysis Using the Concept of Adaptable Threshold Similarity (2006)

The issue of data mining in time series databases is of utmost importance for many practical applications and has attracted a lot of research in the past years. In this paper, we focus on the recently proposed concept of threshold similarity which compares the time series based on the time frames within which they exceed a user-defined amplitude threshold tau. We propose a novel approach for cluster analysis of time series based on adaptable threshold similarity. The most important issue in threshold similarity is the choice of the threshold tau. Thus, the threshold tau is automatically adapted to the characteristics of a small training dataset using the concept of support vector machines. Thus, the optimal tau is learned from a small training set in order to yield an accurate clustering of the entire time series database. In our experimental evaluation we demonstrate that our cluster analysis using adaptable threshold similarity can be successfully applied to many scientific real-world data mining applications
Optimisation des amortisseurs à masse accordée placés en parallèle (2013)

Les amortisseurs à masse accordée (AMA), (" Tuned Mass Dampers " en anglais) sont de nos jours très souvent utilisés pour le contrôle passif des vibrations de bâtiments et d'ouvrages d'art comme par exemple, le gratte-ciel du centre mondial des finances de Shanghai (492 m) ou la passerelle du Millenium à Londres. Un AMA consiste en une masse liée à un niveau de la structure par l'intermédiaire d'un ressort et d'un d'amortisseur linéaires.
Description and performance of a highly versatile, low-cost fiber-optic confocal Raman microscope (1996)

A versatile fiber-optic confocal Raman microscope has been developed. Fiber optics provide remote capabilities for the microscope and the ability to use multiple excitation sources and detection schemes. The horizontal and vertical resolutions of the instrument have been determined by monitoring spectral changes while scanning known interfaces and microparticles. The mini- mum detectable particle size has been determined via the spectroscopic analysis of calibrated polystyrene microspheres. The horizontal resolution has additionally been tested in the imaging of a 10 μm glass fiber embedded in an epoxy matrix.
FPGA implementation of an acoustic echo canceller using a VSS-NLMS algorithm (2009)

Many interesting adaptive algorithms have been proposed for acoustic echo cancellation. Even if they exhibit good performance in “infinite” precision, their capabilities could be seriously affected when using practical implementation platforms, e.g., digital signal processor (DSP) or field-programmable gate array (FPGA). In this context, several finite-precision effects could seriously bias the acoustic echo canceller (AEC) behavior. In this paper, we present an FPGA implementation of an AEC based on a recently proposed variable step-size normalized least-mean-square (VSS-NLMS) algorithm. Area and speed results are provided for a XC2S600E chip. The overall performance of this AEC indicates that it could be a reliable solution for real-world acoustic echo cancellation scenarios.
The possible role of oxidative stress in heart failure and the potential of antioxidant intervention. (2003)

Heart failure (HF) is a major health problem, causing significant morbidity and mortality. Its complex pathophysiology has not yet been fully elucidated. There is growing evidence that oxidative stress is implicated in the cardiac dysfunction leading to HF. In addition, several components of neurohormonal activation, such as catecholamines, angiotensin, aldosterone, tumor necrosis factor-a, endothelin, and cytokines, have been demonstrated to enhance oxidative stress. On the other hand, various pathophysiological parameters of HF, such as cardiomyocyte apoptosis, ventricular remodeling, mechanoelectric uncoupling, and endothelial dysfunction have been shown to be induced by oxidative stress. Despite substantial experimental evidence, the correlation of oxidative stress with the clinical parameters of HF is unclear. The potential association between oxidative stress and HF has led to the study of antioxidant interventions that may attenuate the oxidative damage. Promising results have been obtained mainly from studies using water-soluble antioxidants (such as vitamin C) and factors that inhibit free radical formation (such as allopurinol). The amelioration of oxidative stress in conjunction with pathophysiological abnormalities has been clearly shown in humans, but studies with clinical end-points are scarce. Furthermore, carvedilol and several other cardiovascular drugs, besides their favorable effects on neurohormonal activation in HF, may have additional intrinsic antioxidant properties. Even though the experimental evidence is promising, many more human clinical trials are needed in order to clarify the exact role of oxidative stress in HF and the potential benefits of antioxidant intervention.
Syntheses, and Crystal Structures of YIII Containing Di‐Metal Substituted 1,5 Isomers of Heterometallic Tungstophosphate Nanoclusters: [Y{PM2W10O38(H2O)2}2]11– (M=CoII and ZnII) (2019)

Abstract Two new Y III containing sandwich‐type heterometallic tungstophosphates: [Y{PM 2 W 10 O 38 (H 2 O) 2 } 2 ] 11– (M = Co II ( 1 ) and Zn II ( 2 )) have been synthesized under mild reaction conditions. Both the molecular complexes 1 a and 2 a were synthesized by reacting Y(NO 3 ) 3 ⋅6H 2 O, M(NO 3 ) 2 ⋅6H 2 O (M = Co II and Zn II ) with Wells‐Dawson type divacant K 14 [P 2 W 19 O 69 (H 2 O)]⋅24H 2 O precursor. The potassium salts of single crystalline material were collected and further used for characterization with different analytical techniques including single crystal X‐ray diffraction (SC‐XRD), Fourier transform infrared (FT‐IR) spectroscopy, inductively coupled plasma atomic emission spectroscopy (ICP‐AES), 31 P, 183 W and 89 Y nuclear magnetic resonance (NMR) spectroscopy, high‐resolution electro‐spray ionization mass spectrometry (HR‐ESI‐MS) as well as thermogravimetric analysis. Single crystal X‐ray diffraction analysis shows that both polyanions crystallize in the orthorhombic crystal system with space group Iba2 . Each polyanion consists of ( 1,5 ) isomer of di‐metal substituted α‐Keggin type tungstophosphates, which sandwiched a Y III ion.
The unusual suspects: Regulation of retinal calcium channels by somatostatin (2015)

Keywords: calcium channelexcitotoxicityGβγ, L-typeretinal ganglion cellsPKCsomatostatin receptorinhibition
Fluorous‐Based Small‐Molecule Microarrays for the Discovery of Histone Deacetylase Inhibitors (2007)

Nichtkovalente Immobilisierung ist eine attraktive Methode, um Inhibitoren von Histon-Desacetylasen (HDACs) zu identifizieren. Auf fluorigen kleinen Molekülen basierende Mikroarrays wurden als effektive Methode validiert. Drei Enzyme und drei Probensysteme (Mikroarray, biochemische Aktivität und Oberflächenplasmonenresonanz) wurden zur Identifizierung von HDAC-Inhibitoren und zu deren Vergleich genutzt.
Emerging trend prediction in biomedical literature. (2008)

We present a study on how to predict new emerging trends in the biomedical domain based on textual data. We thereby propose a way of anticipating the transformation of arbitrary information into ground truth knowledge by predicting the inclusion of new terms into the MeSH ontology. We also discuss the preparation of a dataset for the evaluation of emerging trend prediction algorithms that is based on PubMed abstracts and related MeSH terms. The results suggest that early prediction of emerging trends is possible.
Influence of Fiber/Matrix Interface Properties on Complementary Energy and Composite Damage Tolerance (1997)

This paper reviews recent research on cement based composites design for damage tolerance. Specific focus is placed on the influence of fiber and interface properties on the complementary energy of the composite crack bridging behavior, which in turn governs the mechanics of composite fracture. The theoretical concepts are illustrated with examples of highly damage tolerant cement based composites containing fiber types with and without chemical interfacial bonds. The composite fracture and damage tolerant behaviors are rationalized with the mechanics of steady state cracking in fiber composites.
Fast Contour-Tracing Algorithm Based on a Pixel-Following Method for Image Sensors (2016)

Contour pixels distinguish objects from the background. Tracing and extracting contour pixels are widely used for smart/wearable image sensor devices, because these are simple and useful for detecting objects. In this paper, we present a novel contour-tracing algorithm for fast and accurate contour following. The proposed algorithm classifies the type of contour pixel, based on its local pattern. Then, it traces the next contour using the previous pixel's type. Therefore, it can classify the type of contour pixels as a straight line, inner corner, outer corner and inner-outer corner, and it can extract pixels of a specific contour type. Moreover, it can trace contour pixels rapidly because it can determine the local minimal path using the contour case. In addition, the proposed algorithm is capable of the compressing data of contour pixels using the representative points and inner-outer corner points, and it can accurately restore the contour image from the data. To compare the performance of the proposed algorithm to that of conventional techniques, we measure their processing time and accuracy. In the experimental results, the proposed algorithm shows better performance compared to the others. Furthermore, it can provide the compressed data of contour pixels and restore them accurately, including the inner-outer corner, which cannot be restored using conventional algorithms.
Interdiffusion reliability and resistivity scaling of intermetallic compounds as advanced interconnect materials (2021)

Intermetallic compounds have been proposed as potential interconnect materials for advanced semiconductor devices. This study reports the interdiffusion reliability and resistivity scaling of three low-resistivity intermetallic compounds (Cu2Mg, CuAl2, and NiAl) formed on thermally grown SiO2. Experimental observations and thermodynamic calculations indicated good interdiffusion reliability with CuAl2 and NiAl but not with Cu2Mg. This was due to slow reaction between Al and SiO2 in conjunction with strong chemical bonds of Cu–Al and Ni–Al. As for resistivity scaling, all three intermetallic compounds showed better resistivity scalability than Cu. Resistivity of the thin films was measured and characteristic parameters were obtained by curve fitting using a classical scattering model. First-principles calculations were carried out to determine the electron mean free path and bulk resistivity in order to explain the resistivity scaling. The results showed the importance of having optimum microstructure features, i.e., low-defect-density surface, interface, and grain boundaries in addition to optimum material properties, i.e., a short mean free path and low bulk resistivity. CuAl2 and NiAl appeared to satisfy the interdiffusion and resistivity conditions and be promising candidates to replace Cu interconnections for future devices.
Utility of exercise testing to assess athletes for post COVID-19 myocarditis (2022)

Screening protocols that include exercise testing may enhance the sensitivity of detecting COVID-19 related myocardial involvement following recovery from SARS-CoV2 infection.
A New Fullerene-like Inorganic Compound Fabricated by the Sonolysis of an Aqueous Solution of TlCl3 (2000)

The sonication of an aqueous solution of TlCl3 under a flow of argon has led to a precipitate, which is composed of two products. The major product is Tl2OCl2, while Tl2O is obtained in small quantities. The later has a structure of a multi-shell closed compound. The identification of the inorganic fullerenes in the TEM picture as the thallium(I) oxide is based on SAED measurements.
Cross training and its application to skill mining (2002)

We present an approach for cataloging an organization's skill assets based on electronic communications. Our approach trains classifiers using messages from skill-related discussion groups and then applies those classifiers to a different distribution of person-related e-mail messages. We present a general framework, called cross training, for addressing such discrepancies between the training and test distributions. We outline two instances of the general cross-training problem, develop algorithms for each, and empirically demonstrate the efficacy of our solution in the skill-mining context.
Gordonia araii sp. nov. and Gordonia effusa sp. nov., isolated from patients in Japan (2006)

Two bacterial strains, IFM 10211(T) and IFM 10200(T), were isolated from the sputum of two Japanese patients, and were subjected to a polyphasic taxonomic study. The two strains were found to have morphological, physiological and chemotaxonomic properties that were consistent with their assignment to the genus Gordonia, except for a few chemotaxonomic characteristics. Almost complete 16S rRNA gene sequences of the two strains were determined; the data showed that they are related distantly to Gordonia amarae, Gordonia hirsuta, Gordonia hydrophobica and Gordonia sihwensis, showing 16S rRNA gene sequence similarities to the type strains of these species of 96.2-97.9 %. DNA-DNA relatedness data coupled with the combination of genotypic and phenotypic data indicated that the two strains are representatives of two novel, separate species. The names proposed to accommodate these two strains are Gordonia araii sp. nov. (type strain IFM 10211(T)=DSM 44811(T)=NBRC 100433(T)=JCM 12131(T)) and Gordonia effusa sp. nov. (type strain IFM 10200(T)=DSM 44810(T)=NBRC 100432(T)=JCM 12130(T)).
Image-guided spinal navigation: application to spinal metastases (2001)

Image-guided spinal navigation is an adjuvant surgical technology that has evolved over the past decade. It has been used as a replacement for conventional intraoperative imaging techniques to improve the spine surgeon's spatial orientation to nonvisualized anatomy. The author will review the principles of image-guided technology in spinal surgery and focus on its application to the management of spinal metastatic disease.
On the Origin of Opposite Stereoselection in the Asymmetric Hydrogenation of Phenyl- and tert-Butyl-Substituted Enamides (2000)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTOn the Origin of Opposite Stereoselection in the Asymmetric Hydrogenation of Phenyl- and tert-Butyl-Substituted EnamidesIlya D. Gridnev, Natsuka Higashi, and Tsuneo ImamotoView Author Information Department of Chemistry, Faculty of Science Chiba University, Chiba 263-8522, Japan Cite this: J. Am. Chem. Soc. 2000, 122, 42, 10486–10487Publication Date (Web):October 6, 2000Publication History Received26 August 2000Published online6 October 2000Published inissue 1 October 2000https://pubs.acs.org/doi/10.1021/ja005554ghttps://doi.org/10.1021/ja005554grapid-communicationACS PublicationsCopyright © 2000 American Chemical SocietyRequest reuse permissionsArticle Views624Altmetric-Citations64LEARN 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-AlertscloseSupporting Info (2)»Supporting Information Supporting Information SUBJECTS:Alkyls,Catalysts,Catalytic reactions,Hydrogen isotopes,Hydrogenation Get e-Alerts
New Free-Piston Topping Cycle for Gas-Turbine Power Plants (2003)

A proposed topping cycle inserts a free-piston internal-combustion engine between the compressor and the combustor of a combustion turbine. The topping cycle diverts air from the compressor to supercharge the free-piston engine. Because the free-piston engine uses gas bearings to support the piston and is built of high-temperature materials, the engine can increase the pressure and temperature of the gas, exhausting it to a small expander that produces power. The exhaust from the topping-cycle expander is at a pressure that can be re-introduced to the main turbine, allowing almost complete recovery of waste heat. A capacity increase exceeding 35% is possible, and overall cycle efficiency can approach 70% when incorporated into a state-of-the-art combined-cycle plant. The cost of per incremental kW of the topping cycle can be dramatically lower than that of the base turbine because of the high power density and simplicity of the engine. Building on decades of progress in combustion turbines systems, the new cycle promises high performance without the engineering risks of manufacturing a completely new cycle.
Angular and Spectral Sparse Sensing With End-to-End Optimized Nanophotonics (2022)

We present a method for angle and wavelength sensing for underdetermined imaging systems by performing end-to-end nanophotonic inverse design with a compressed sensing backend.
1744-P: Hepatic and Disposal Insulin Sensitivity with Single Tracer Method: Use of Naturally Abundant 13C-Polysaccharide (2020)

We have recently demonstrated successful estimation of postprandial glucose fluxes using a novel triple tracer technique after ingestion of a mixed meal containing complex carbohydrates (CC) that is naturally enriched with 13C polysaccharide ([13C]-PS). We also reported higher insulin sensitivity (SI) with CC than simple carbohydrate (SC) containing mixed meals. The current analysis was designed to determine if [13C]-PS per se could directly measure hepatic (SIH) and disposal SI (SID) during the CC containing mixed meal. Sixteen healthy subjects (9M, age=33±2 y, BMI=23±1 kg/m2) received, in random order, either SC (labeled with [13C]-glucose) or CC (naturally containing [13C]-PS) mixed meals. All meals were isocaloric and contained 50g carbohydrates with similar macronutrient composition. Plasma glucose, [13C]-glucose and insulin were measured and the Single Tracer Oral Minimal Model applied to estimate SIH and SID. The model well predicted the data. SIH was significantly higher, while SID was numerically but not statistically higher in CC than SC meals (Figure 1). This implies that the higher SI with CC meals is likely due to higher hepatic insulin sensitivity. Taken together, the data suggest that a single, naturally occurring [13C]-PS tracer can measure postprandial SI and its components without the need for the triple tracer method. Disclosure C. Dalla Man: Research Support; Self; Sanofi-Aventis Deutschland GmbH. R. Visentin: None. M. Schiavon: None. A. Basu: Consultant; Spouse/Partner; GENFIT. Research Support; Spouse/Partner; AstraZeneca. C. Cobelli: None. R. Basu: Consultant; Self; GENFIT. Research Support; Self; AstraZeneca. Funding National Institutes of Health (DK085516, DK94331, DK29953); Italian Minister for Education
Preparation and use of enantiomerically pure Ca-tetrasubstituted a-amino acids (1996)

The chiral residues of this family are expected to become an important component in the arsenal of medicinal chemists
Mining web logs to debug distant connectivity problems (2006)

Content providers base their business on their ability to receive and answer requests from clients distributed across the Internet. Since disruptions in the flow of these requests directly translate into lost revenue, there is tremendous incentive to diagnose why some requests fail and prod the responsible parties into corrective action. However, a content provider has only limited visibility into the state of the Internet outside its domain. Instead, it must mine failure diagnoses from available information sources to infer what is going wrong and who is responsible.Our ultimate goal is to help Internet content providers resolve reliability problems in the wide-area network that are affecting end-user perceived reliability. We describe two algorithms that represent our first steps towards enabling content providers to extract actionable debugging information from content provider logs, and we present the results of applying the algorithms to a week's worth of logs from a large content provider, during which time it handled over 1 billion requests originating from over 10 thousand ASes.