gebhart/patrepeval huggingface dataset:
Demo (2017)

We demonstrate that high frequency ultrasonic sounds can be designed to become recordable by unmodified smartphone microphones, while remaining inaudible to humans. The core idea lies in exploiting nonlinearities in microphone hardware with a combination of ultrasound frequencies. These frequencies can be regulated to carry data bits, thereby enabling an acoustic (but inaudible) communication channel to today's microphones. Other applications include jamming spy microphones in the environment, live watermarking of music in a concert, and even acoustic Denial-of-Service (DoS) attacks.
Rreverse link high-speed packet data support in cdma2000 1/spl times/EV-DV: upper layer protocols (2005)

This article describes the design enhancements of the upper layers of the cdma2000/spl reg/ revision D standards [Mar. 2004] supporting high-speed wireless data on the 1/spl times/EV-DV reverse link. In revision D, the reverse link peak data rate has been increased by an order of magnitude from 153.6 kb/s to 1.8 Mb/s, and the reverse link sector throughput has been improved significantly (from about 280 kb/s to 600 kb/s). The key enabling mechanisms to achieve these enhancements include a hybrid automatic repeat request protocol, adaptive higher order modulation and coding schemes, and advanced radio resource management schemes. It is well known that the reverse link is interference limited, so the system resource of interest is reverse link interference. cdma2000 Revision D introduces a variety of flexible medium access control mechanisms to allocate appropriate reverse link resources for mobile stations with various service requirements. Moreover, cdma2000 revision D greatly enhances quality of service support for the reverse link.
Low power implementation of Geometric High-order Decorrelation-based Source Separation on an FPGA board (2023)

Open source software for robot audition called HARK aims to make “OpenCV” in audio signal processing, providing comprehensive functions from multichannel audio input to sound localization, sound source separation, and au-tomatic speech recognition. Since each of these HARK modules takes considerable energy when executed on PC, we propose to implement each module on an FPGA board called M-KUBOS connected. Here, we focus on the most computationally expensive function of HARK; the sound source separation, and implement it on a Zynq Ultrascale+ board. More than twice a performance improvement was achieved by using the sound frequency level parallelization in the HLS description compared to the software execution on the Ryzen 3990X64-core server. Power evaluation of the real board showed that the energy consumption is only 1/23.4 of the server.
Novel TNF-α Receptor 1 Antagonist Treatment Attenuates Arterial Inflammation and Intimal Hyperplasia in Mice (2011)

Our data suggest that PEG-R1antTNF suppresses SMC proliferation and inflammation by inhibiting NF-κB. This study highlights the potential therapeutic benefit of selective TNFR1 antagonist therapy in preventing intimal hyperplasia and arterial inflammation.
Implicitly Restarted Arnoldi Methods and Subspace Iteration (2001)

This goal of this paper is to present an elegant relationshipbetween an implicitly restarted Arnoldi method (IRAM) and nonstationary (subspace) simultaneous iteration. This relationship allows the geometric convergence theory developed for nonstationary simultaneous iteration due to Watkins and Elsner [Linear Algebra Appl., 143 (1991), pp. 19--47] to be used for analyzing the rate of convergence of an IRAM. We also comment on the relationship with other restarting schemes. A set of experiments demonstrates that implicit restarted methods can converge at a much faster rate than simultaneous iteration when iterating on a subspace of equal dimension.
Epoxy Nanocomposites with Carbon Nanotubes Produced by Floating Catalyst CVD (2021)

Epoxy nanocomposites with float catalysis-produced CNT felt as a filler were prepared. Parameters such as the curing process, glass transition of epoxynanocomposites, structure and morphology of CNT felt, initial epoxy composition, and epoxy nanocomposites were investigated. The influence of CNT felt on curing process in epoxy nanocomposites with different amounts of curing agent was determined. An exothermic reaction between the curing agent and the surface of CNTs was established. It was found that the structure of epoxy nanocomposites has a high degree of heterogeneity: the presence of fiber-like structures and individualized CNTs is observed together with the regions that are typical for CNTs that are fabricated via a catalytic chemical vapor deposition (CVD). Based on the studies performed, it is possible to predict the production of epoxy nanocomposites with outstanding mechanical and thermophysical properties. In particular, the uncured compositions already obtained in this work can be used for the manufacture of electrically conductive glass and carbon fiber reinforced plastics and functional coatings.
A Review of Triterpenoids and Their Pharmacological Activities from Genus Kadsura (2018)

Plants in genus Kadsura, belong to the Schisandraceae family including genus Schisandra and genus Kadsura, revealed folk efficacy and medicinal application in the treatment of rheumatoid arthritis and gastroenteric disorders for a long history. Previous study indicated that plants from genus Kadsura mainly contain lignans, triterpenoids and essential oils, and showed the active compounds were lignans and triterpenoids. Among all compounds from Schisandraceae family, the triterpenoids between the genus Schisandra and genus Kadsura had obvious differences. In this paper, we reviewed 214 triterpenoids and their pharmacological activities reported from genus Kadsura in the past 30 years (from 1987 to 2017), aiming to provide reference for further study.
5-Butyl-5-(2-methyl-1H-inden-1-yl)-5H-dibenzo[b,d]silole (2016)

The structure of the title compound [systematic name: 8-butyl-8-(2-methyl-1 H -inden-1-yl)-8-silatricyclo[7.4.0.0 2,3 ]trideca-1(13),2,4,6,9,11-hexaene], C 26 H 26 Si, at 110 K has orthorhombic ( Pbca ) symmetry. In the molecule, the butyl group displays an extended conformation with the C—C—C—C torsion angle of 176.8 (2)°. The dihedral angle between the biphenyl group and the indole group is 60.04 (2)°. The structure exhibits a weak intramolecular C—H...π interaction.
Validation of a simple, tunable-chirp 40-Gb/s RZ pulse carver using fulloptical field characterization (2004)

A simple, single-modulator solution for generating return-to-zero pulses with adjustable chirp and duty cycles between 33% and 67% is studied. The temporal phase and intensity of the pulses are measured at 40 Gbit/s using the spectrogram method.
Toward Evaluation Techniques for Music Similarity (2003)

We describe and discuss our recent work developing a database, methodology and ground truth for the evaluation of automatic techniques for music similarity. Our database consists of acoustic and textual 'Web-mined' data covering 400 popular artists. Of note is our technique of sharing acoustic features rather than raw audio to avoid copyright problems. Our evaluation methodology allows any data source to be regarded as ground truth and can highlight which measure forms the best collective ground truth. We additionally describe an evaluation methodology that is useful for data collected from people in the form of a survey about music similarity. We have successfully used our database and techniques to evaluate a number of music similarity algorithms.
Nitroalkene [4 + 2] Cycloadditions with 2-(Acyloxy)vinyl Ethers. Stereoselective Synthesis of 3-Hydroxy-4-substituted-pyrrolidines (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNitroalkene [4 + 2] Cycloadditions with 2-(Acyloxy)vinyl Ethers. Stereoselective Synthesis of 3-Hydroxy-4-substituted-pyrrolidinesScott E. Denmark and Mark E. SchnuteCite this: J. Org. Chem. 1994, 59, 16, 4576–4595Publication Date (Print):August 1, 1994Publication History Published online1 May 2002Published inissue 1 August 1994https://pubs.acs.org/doi/10.1021/jo00095a038https://doi.org/10.1021/jo00095a038research-articleACS PublicationsRequest reuse permissionsArticle Views484Altmetric-Citations38LEARN 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 (1)»Supporting Information Supporting Information Get e-Alerts
A practical small-signal equivalent circuit model for RF-MOSFETs valid up to the cut-off frequency (2003)

The non-quasistatic contribution to the Y-parameters is shown to be much smaller than usually expected. This is especially true for advanced pocket-implant MOSFET technologies being developed for RF devices. Therefore, a simple and practical equivalent-circuit model valid up to the cut-off frequency becomes possible. The small interdependence of the different model elements allows an explicit and sequential extraction of the individual element values.
Interference Management and Capacity Analysis for mm-Wave Picocells in Urban Canyons (2019)

Millimeter (mm) wave picocellular networks are a promising approach for delivering the 1000-fold capacity increase required to keep up with projected demand for wireless data: the available bandwidth is orders of magnitude larger than that in existing cellular systems, and the small carrier wavelength enables the realization of highly directive antenna arrays in compact form factors, thus drastically increasing spatial reuse. In this paper, we carry out an interference analysis for mm-wave picocells in an urban canyon with a dense deployment of base stations. Each base station sector can serve multiple simultaneous users, which implies that both intra- and inter-cell interference must be managed. We propose a cross-layer approach to interference management based on (i) suppressing interference at the physical layer and (ii) managing the residual interference at the medium access control layer. We provide an estimate of network capacity, and establish that 1000-fold increase relative to conventional LTE cellular networks is indeed feasible.
Hydration Behavior of Polylactam Clathrate Hydrate Inhibitors and Their Small-Molecule Model Compounds (2017)

The solution hydration behavior of a series of lactam-based kinetic clathrate hydrate inhibitors (KHIs) has been studied in order to determine mechanistic insight into their KHI performance. IR and 1H NMR spectroscopic titration data were compared across a series of mono- and bis(lactam) model compounds, and solid-phase hydration behavior was examined by dynamic vapor sorption. The structures of several of the model compounds have been investigated by X-ray crystallography. The work reveals insight into the very low crystallinity and high hygroscopicity of these materials which is linked to their performance as KHIs. Analysis of water binding in sour gas systems, containing H2S and CO2, reveals no effect on the water affinity of the lactams, suggesting that sour gas components do not inhibit KHI performance, but rather promote clathrate hydrate formation.
ChemInform Abstract: Lipase‐Catalyzed Resolution: Enantioselective Esterification of 2‐ Propanol Amines. (1991)

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.
Monolithic integration of an all-optical Mach-Zehnder demultiplexer using an asymmetric twin-waveguide structure (2001)

We demonstrate monolithic integration of a twin-waveguide Mach-Zehnder terahertz optical asymmetric demultiplexer (MZ-TOAD). The InGaAsP-InP device operates at 1.55 μm wavelength and has two semiconductor optical amplifiers in the asymmetric MZ interferometer configuration with a single control input and a built-in switching delay. A 28-ps full-width at half-maximum (FWHM) switching window with high contrast ratio for a range of control powers is obtained using a counter-propagating optical signal and control pulses.
Extracorporeal CO2removal as bridge to lung transplantation in life-threatening hypercapnia (2014)

In patients awaiting lung transplantation (LTX), adequate gas exchange may not be sufficiently achieved by mechanical ventilation alone if acute respiratory decompensation arises. We report on 20 patients with life-threatening hypercapnia who received extracorporeal CO2 removal (ECCO2-R) by means of the interventional lung assist (ILA®, Novalung) as bridge to LTX. The most common underlying diagnoses were bronchiolitis obliterans syndrome, cystic fibrosis, and idiopathic pulmonary fibrosis, respectively. The type of ILA was pumpless arteriovenous or pump-driven venovenous (ILA activve®, Novalung) in 10 patients each. ILA bridging was initiated in 15 invasively ventilated and five noninvasively ventilated patients, of whom one had to be intubated prior to LTX. Hypercapnia and acidosis were effectively corrected in all patients within the first 12 h of ILA therapy: PaCO2 declined from 109 (70-146) to 57 (45-64) mmHg, P < 0.0001; pH increased from 7.20 (7.06-7.28) to 7.39 (7.35-7.49), P < 0.0001. Four patients were switched to extracorporeal membrane oxygenation due to progressive hypoxia or circulatory failure. Nineteen patients (95%) were successfully transplanted. Hospital and 1-year survival was 75 and 72%, respectively. Bridging to LTX with ECCO2-R delivered by arteriovenous pumpless or venovenous pump-driven ILA is feasible and associated with high transplantation and survival rates.
Hybrid data and model driven algorithms for angular power spectrum\n estimation (2020)

We propose two algorithms that use both models and datasets to estimate\nangular power spectra from channel covariance matrices in massive MIMO systems.\nThe first algorithm is an iterative fixed-point method that solves a\nhierarchical problem. It uses model knowledge to narrow down candidate angular\npower spectra to a set that is consistent with a measured covariance matrix.\nThen, from this set, the algorithm selects the angular power spectrum with\nminimum distance to its expected value with respect to a Hilbertian metric\nlearned from data. The second algorithm solves an alternative optimization\nproblem with a single application of a solver for nonnegative least squares\nprograms. By fusing information obtained from datasets and models, both\nalgorithms can outperform existing approaches based on models, and they are\nalso robust against environmental changes and small datasets.\n
Quaternary Stereogenic Centers by Enantioselective â‐Carbon Eliminations from tert ‐Cyclobutanols (2012)

This chapter contains sections titled: Background Objective: Enantioselective Formation of Quaternary Stereogenic Centers in Combination with Reactive Alkyl-Rhodium Intermediates Selective Generation of the Alkyl-Rhodium Species and Its Downstream Reactivities CV of Nicolai Cramer CV of Tobias Seiser References
Event Camera Data Classification Using Spiking Networks with Spike-Timing-Dependent Plasticity (2022)

We present an optimization-based theory describing spiking cortical ensembles equipped with Spike-Timing-Dependent Plasticity (STDP) learning, as empirically observed in the visual cortex. Using this generic framework, we build a class of global and action-based feature descriptors for event-based cameras that we assess on the N-MNIST and the IBM DVS128 Gesture datasets. We report significant accuracy improvements compared to state-of-the-art STDP-based systems (+9.3% on N-MNIST, +7.74% on IBM DVS128 Gesture). In addition to ultra-low-power learning in neuromorphic edge devices, our work contributes towards a biologically-plausible, optimization-based theory of cortical vision.
Conformational Templates for Rational Drug Design:  Flexibility of cyclo(d-Pro-Ala-Ala-Ala-Ala) in DMSO Solution (2007)

Long MD simulations (100 ns) for the important model cyclopentapeptide cyclo(D-Pro1-Ala2-Ala3-Ala4-Ala5) were performed in explicit DMSO solution using both OPLS-AA and AMBER03 force fields. Simulations revealed conformational transitions between two main conformers, a predominant one (population 93-99%) and a minor conformer (population 0.4-6.7%). These results are in excellent agreement with 20 experimental proton-proton distances estimated for this cyclopentapeptide. The previously discussed gamma-turn-like conformation for Ala4 was present only in a minor conformer.
The Use of a 90 Metre Thermosiphon Cooling Plant and Associated Custom Ultrasonic Instrumentation in the Cooling of the ATLAS Inner Silicon Tracker (2018)

A new 60kW thermosiphon fluorocarbon cooling plant has been commissioned to cool the silicon tracker of the ATLAS experiment at the CERN LHC. The thermosiphon operates over a height of 90 metres and is integrated into the CERN UNICOS system and the ATLAS detector control system (DCS). The cooling system uses custom ultrasonic instrumentaton to measure very high coolant vapour flow (up to 1.2 kg/second), to analyse binary gas mixtures and detect leaks. In these instruments ultrasound pulses are transmitted in opposite directions in flowing gas streams. Pulse transit time measurements are used to calculate the flow rate and the sound velocity, which - at a given temperature and pressure - is a function of the molar concentration of the two gases. Gas composition is computed from comparisons of real-time sound velocity measurements with a database of predictions, using algorithms running in the Siemens SIMATIC WinCC SCADA environment. A highly-distributed network of five instruments is currently integrated into the ATLAS DCS. Details of the thermosiphon, its recent operation and the performance of the key ultrasonic instrumentation will be presented.
Axonal transport of the cellular prion protein is increased during axon regeneration (2005)

The cellular prion protein, PrPc, is a glycosylphosphatidylinositol-anchored cell surface glycoprotein and a protease-resistant conformer of the protein may be the infectious agent in transmissible spongiform encephalopathies. PrPc is localized on growing axons in vitro and along fibre bundles that contain elongating axons in developing and adult brain. To determine whether the growth state of axons influenced the expression and axonal transport of PrPc, we examined changes in the protein following post-traumatic regeneration in the hamster sciatic nerve. Our results show (1) that PrPc in nerve is significantly increased during nerve regeneration; (2) that this increase involves an increase in axonally transported PrPc; and (3) that the PrPc preferentially targeted for the newly formed portions of the regenerating axons consists of higher molecular weight glycoforms. These results raise the possibility that PrPc may play a role in the growth of axons in vivo, perhaps as an adhesion molecule interacting with the extracellular environment through specialized glycosylation.
Ureteronephroscopic Marsupialization of Obstructing Peripelvic Renal Cyst (1991)

Flexible ureteronephroscopy has been used for numerous therapeutic applications in the upper urinary tract. We report a case of a large peripelvic renal cyst causing obstruction to the ureteropelvic junction, which was treated by incising the wall of the cyst into the renal pelvis with the ureteronephroscope.
Endothelial Cell Overexpression of Fas Ligand Attenuates Ischemia-Reperfusion Injury in the Heart (2003)

Fas ligand (FasL) is a member of tumor necrosis factor family that induces apoptosis in target cells that express Fas. The function of FasL during inflammation remains controversial. In this study, we examined the role of vascular endothelial FasL during acute myocardial ischemia-reperfusion that is closely associated with inflammation. Transgenic mouse lines were established that overexpress human FasL on endothelium under the control of the vascular endothelial cadherin promoter. Expression of FasL transgene was detected at both mRNA and protein levels, and functional transgene-encoded FasL protein was specifically expressed on the surface of vascular endothelial cells. Transgenic mice developed normally and had normal hearts. When subjected to 30 min of myocardial ischemia and 72 h of reperfusion, myocardial infarct size was reduced by 42% in the transgenic mice compared with nontransgenic littermates (p < 0.05). Moreover, hemodynamic data demonstrated that transgenic hearts performed better following ischemia and reperfusion compared with nontransgenic hearts. Myocardial neutrophil infiltration was reduced by 54% after 6 h of reperfusion in transgenic hearts (p < 0.01). Neutrophil depletion prior to ischemia-reperfusion injury led to smaller infarcts that were not different between transgenic and nontransgenic mice, suggesting that endothelial FasL may attenuate ischemia-reperfusion injury by abating the inflammatory response. These results indicate that vascular endothelial FasL may exert potent anti-inflammatory actions in the setting of myocardial ischemia-reperfusion injury.
Process–Structure–Property relationship of roping in meltblown nonwovens (2022)

For applications such as face masks and medical gowns, defects can pose a threat to the reliability of protective materials. Roping, the entanglement of two or more fibers in a nonwoven, can cause a decrease in pore size uniformity, filtration efficiency, and barrier properties in meltblown nonwovens. In this work, a novel measurement methodology for roping was developed utilizing SEM images, ImageJ software, and statistical analysis with R. The study analyzed 16 different meltblown nonwovens with two different die tips with a 1550 MFR polypropylene, utilizing a full factorial design with 4 factors at 2 levels. A model was developed for the mitigation of roping, and it was determined that the interactions of capillary density with air flow and air flow with die-to-collector distance (DCD) had the greatest impact on the formation of roping in meltblown nonwovens. The fundamental learnings of the effects of the process parameters on roping formation could be applied to industrial applications such as face masks to tailor the balance between filtration efficiency and air permeability. The linear model could be directly applied to applications such as HEPA (High Efficiency Particulate Air) and ULPA (Ultra Low Particulate Air) filters, for operating room and clean room filters, in which nonuniformity and loss of surface area critical to performance, and thus the mitigation of roping would be beneficial.