gebhart/patrepeval huggingface dataset:
On block noncoherent communication with low-precision phase quantization at the receiver (2009)

We consider communication over the block noncoherent AWGN channel with low-precision Analog-to-Digital Converters (ADCs) at the receiver. For standard uniform Phase Shift Keying (PSK) modulation, we investigate the performance of a receiver architecture that quantizes <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">only</i> <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">the</i> <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">phase</i> of the received signal; this has the advantage of being <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">implementable</i> <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">without</i> <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">automatic</i> <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">gain</i> <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">control</i> , using multiple 1-bit ADCs preceded by analog multipliers. We study the structure of the transition density of the resulting channel model. Several results, based on the symmetry inherent in the channel, are provided to characterize this transition density. A low complexity procedure for computing the channel capacity is obtained using these results. Numerical capacity computations for QPSK show that 8-bin phase quantization of the received signal recovers more than 80-85% of the capacity attained with unquantized observations, while 12-bin phase quantization recovers above 90-95% of the unquantized capacity. Dithering the constellation is shown to improve the performance in the face of drastic quantization.
3D simulations for an OPCPA chain including nonlinear refractive index effects (2011)

We present 3D OPCPA simulations for a PW system with 3.67 J, 4 fs transform limited pulses. We show that including nonlinear refractive index effects, the energy is reduced by ~11% and the Fourier limit increased by ~17.5%.
ChemInform Abstract: EMF STUDIES OF LITHIUM‐RICH LITHIUM‐ALUMINUM ALLOYS FOR HIGH‐ENERGY SECONDARY BATTERIES (1977)

Abstract Die EMK‐Messungen erfolgen an Ketten des Typs Abei Temperaturen zwischen 390 und 550°C. Die Li‐Aktivität steigt bei Änderung der Legierungszusammensetzung von 48 auf 56 Atom % (β‐Phasenbereich) stufenweise von 0,007 bis 0,7 an.
Outdoor to indoor office MIMO measurements at 5.2 GHz (2005)

This paper presents the results of one of the first measurement campaigns for the double-directional characterization of outdoor to indoor wireless propagation channels. Such channels play a vital role for cellular systems with multiple antenna elements at transmitter and receiver, i.e. multiple-input multiple-output (MIMO) systems. Measurements were performed at 5.2 GHz between 53 different receiver locations in an office building, and three "base station" positions on a nearby rooftop. In the paper, we present results for angular-delay profiles, RMS angular spread, and other statistical parameters characterizing delay and angular dispersion.
Development and Application of a Fast-Response Total Temperature Probe for Turbomachinery (2016)

The measurement of unsteady total temperature is of great interest for the examination of loss mechanisms in turbomachinery with respect to the improvement of the efficiency. Since conventional thermocouples are limited in frequency response, several fast-response total temperature probes have been developed over the past years. To improve the spatial resolution compared to these existing probes and maintaining a high temporal resolution, a new fast-response total temperature probe has been developed at the Institute of Aircraft Propulsion Systems (ILA), Stuttgart, Germany in cooperation with Berns Engineers, Gilching, Germany. The design of the probe allows a sensitive measuring surface below 1 mm2. A detailed insight into the design of the probe, the measurement principle, the calibration process, and an estimation of the measurement uncertainty is given in the present paper. Furthermore, to prove the functionality of the probe, first experimental results of a simple test bed and of area traverses downstream of the first rotor of a two-stage low pressure turbine are presented. It is shown, that the new probe is capable of detecting rotor characteristic effects as well as rotor-stator-interactions. In addition, a hot-spot is investigated downstream of the first rotor of the turbine, and the findings are compared to the effects known from the literature.
Simultaneous shape and topology optimization of wings (2023)

Abstract This paper presents a method for simultaneous optimization of the outer shape and internal topology of aircraft wings, with the objective of minimizing drag subject to lift and compliance constraints for multiple load cases. The physics are evaluated by the means of a source-doublet panel method for the aerodynamic response and linear elastic finite elements for the structural response, which are one-way coupled. At each design iteration, a mapping procedure is applied to map the current wing shape and corresponding pressure loads to the unfitted finite element mesh covering the design domain. Wings of small fixed-wing airplanes both with and without a stiffening strut are optimized. The resulting wings show internal topologies with struts and wall-truss combinations, depending on the design freedom of the shape optimization. The lift distributions of the optimized wings show patterns like the ones obtained when performing optimization of wing shapes with constraints on the bending moment at the root.
New Ultrasound Telediagnostic System for Low‐Resource Areas (2020)

Billions of people around the world lack access to diagnostic imaging. To address this issue, we piloted a comprehensive ultrasound telediagnostic system, which uses ultrasound volume sweep imaging (VSI) acquisitions capable of being performed by operators without prior traditional ultrasound training and new telemedicine software capable of sending imaging acquisitions asynchronously over low Internet bandwidth for remote interpretation. The telediagnostic system was tested with obstetric, right upper quadrant abdominal, and thyroid volume sweep imaging protocols in Peru. Scans obtained by operators without prior ultrasound experience were sent for remote interpretation by specialists using the telemedicine platform. Scans obtained allowed visualization of the target region in 96% of cases with diagnostic imaging quality. This telediagnostic system shows promise in improving health care disparities in the developing world.
Room-temperature larger-scale highly ordered nanorod imprints of ZnO film (2013)

Room-temperature large-scale highly ordered nanorod-patterned ZnO films directly integrated on III-nitride light-emitting diodes (LEDs) are proposed and demonstrated via low-cost modified nanoimprinting, avoiding a high-temperature process. with a 600 nm pitch on top of a critical 200 nm thick Imprinting ZnO nanorods of 200 nm in diameter and 200 nm in height continuous ZnO wetting layer, the light output power of the resulting integrated ZnO-nanorod-film/semi-transparent metal/GaN/InGaN LED shows a two-fold enhancement (100% light extraction efficiency improvement) at the injection current of 150 mA, in comparison with the conventional LED without the imprint film. The increased optical output is well explained by the enhanced light scattering and outcoupling of the ZnO-rod structures along with the wetting film, as verified by the numerical simulations. The wetting layer is found to be essential for better impedance matching. The current-voltage characteristics and electroluminescence measurements confirm that there is no noticeable change in the electrical or spectral properties of the final LEDs after ZnO-nanorod film integration. These results suggest that the low-cost high-quality large-scale ZnO-nanorod imprints hold great promise for superior LED light extraction.
Channel Bonding Design for 100 Gb/s PON Based on FEC Codeword Alignment (2017)

We propose a channel bonding system structure and algorithms for 100 Gb/s PON. The algorithms schedule FEC codeword transmission among four 25 Gb/s wavelength channels, and they are demonstrated with high efficiency and low latency.
An under‐recognized high‐risk atrial fibrillation population: Analyzing transcatheter mitral valve repair patients for left atrial appendage closure device application (2019)

Patients undergoing TMVR represent a high risk group of AF patients that may benefit from a LAAC device.
The Outcome of the Cryptococcus neoformans–Macrophage Interaction Depends on Phagolysosomal Membrane Integrity (2018)

<i>Cryptococcus neoformans</i> is a fungal pathogen with worldwide distribution. <i>C. neoformans</i> resides within mature phagolysosomes where it often evades killing and replicates. <i>C. neoformans</i> induces phagolysosomal membrane permeabilization (PMP), but the mechanism for this phenomenon and its consequences for macrophage viability are unknown. In this study, we used flow cytometry methodology in combination with cell viability markers and LysoTracker to measure PMP in J774.16 and murine bone marrow-derived macrophages infected with <i>C. neoformans</i> Our results showed that cells manifesting PMP were positive for apoptotic markers, indicating an association between PMP and apoptosis. We investigated the role of phospholipase B1 in <i>C. neoformans</i> induction of PMP. Macrophages infected with a <i>C. neoformans</i> Δplb1 mutant had reduced PMP compared with those infected with wild-type and phospholipase B1-complemented strains, suggesting a mechanism of action for this virulence factor. Capsular enlargement inside macrophages was identified as an additional likely mechanism for phagolysosomal membrane damage. Macrophages undergoing apoptosis did not maintain an acidic phagolysosomal pH. Induction of PMP with ciprofloxacin enhanced macrophages to trigger lytic exocytosis whereas nonlytic exocytosis was common in those without PMP. Our results suggest that modulation of PMP is a critical event in determining the outcome of <i>C. neoformans-</i>macrophage interaction.
On the rate-distortion region for separate encoding of correlated sources (2003)

This paper discusses the two correlated sources encoded by two separate encoders. The coding strategy used in this paper is based on time-sharing of rate-distortion codes. The paper focuses on the development of an alternative coding strategy, with the aim of closing the existing gap to the Berger-Tung outer bound.
Effective diagnostics through interval unloads in a BIST environment (2002)

Logic built-in self test (BIST) is increasingly being adopted to improve test quality and reduce test costs for rapidly growing designs. Compared to deterministic automated test pattern generation (ATPG), BIST presents inherent fault diagnostic challenges. Previous diagnostic techniques have been limited in their diagnosis resolution and/or require significant hardware overhead. This paper proposes an interval-based scan-unload method that ensures diagnosis resolution down to gate-level faults with minimal hardware overhead. Tester fail-data collection is based on a novel construct incorporated into the design-extensions of the standard test interface language (STIL). The implementation of the proposed method is presented and analyzed.
Draft Genome of a Brazilian Avian-Pathogenic Escherichia coli Strain and In Silico Characterization of Virulence-Related Genes (2012)

Avian-pathogenic Escherichia coli (APEC) strains cause extraintestinal diseases in avian species. Here, we present the draft genome of an APEC strain (SCI-07) from Brazil that was isolated from skin lesions (gelatinous edema) on the head and periorbital tissues of a laying hen with swollen head syndrome.
InfoSuggest: A System for Automated Information Gathering: With a Real-World Case Study (2014)

Departments of many organizations treat the World Wide Web as an important information source. They have a need to keep themselves up-to-date with current information in their domain. Such information gathering is a time consuming process due to overload of available information and there are dedicated teams in many organizations for this task. In this paper, we present Info Suggest, a system for end-to-end information gathering from the web. Info Suggest improves efficiency of such focused information gathering process with the use of machine learning. We employ a semi-supervised document classification method called Transductive Support Vector Machines (TSVMs) for learning user preferences based on example articles provided by them. We also devise a strategy for unlabeled data selection TSVM-Meta that is applicable for an information gathering setting. In the paper, we discuss the system architecture and also present a case study for information gathering for food safety in an environmental health department of a government agency. We conduct experiments and demonstrate that our system results in improving the efficiency by as much as 35% by making it easier to find relevant content.
Electron-transfer kinetics of pentaammineruthenium(III)(histidine-33)-ferricytochrome c. Measurement of the rate of intramolecular electron transfer between redox centers separated by 15.ANG. in a protein (1982)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron-transfer kinetics of pentaammineruthenium(III)(histidine-33)-ferricytochrome c. Measurement of the rate of intramolecular electron transfer between redox centers separated by 15.ANG. in a proteinJay R. Winkler, Daniel G. Nocera, Kathryn M. Yocom, Emilio Bordignon, and Harry B. GrayCite this: J. Am. Chem. Soc. 1982, 104, 21, 5798–5800Publication Date (Print):October 1, 1982Publication History Published online1 May 2002Published inissue 1 October 1982https://pubs.acs.org/doi/10.1021/ja00385a047https://doi.org/10.1021/ja00385a047research-articleACS PublicationsRequest reuse permissionsArticle Views878Altmetric-Citations143LEARN 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
Angiotensin AT1 Receptor Antagonism Ameliorates Murine Retinal Proteome Changes Induced by Diabetes (2009)

Diabetic retinopathy is the most common microvascular complication caused by diabetes mellitus and is a leading cause of vision loss among working-age adults in developed countries. Understanding the effects of diabetes on the retinal proteome may provide insights into factors and mechanisms responsible for this disease. We have performed a comprehensive proteomic analysis and comparison of retina from C57BL/6 mice with 2 months of streptozotocin-induced diabetes and age-matched nondiabetic control mice. To explore the role of the angiotensin AT1 receptor in the retinal proteome in diabetes, a subgroup of mice were treated with the AT1 antagonist candesartan. We identified 1792 proteins from retinal lysates, of which 65 proteins were differentially changed more than 2-fold in diabetic mice compared with nondiabetic mice. A majority (72%) of these protein changes were normalized by candesartan treatment. Most of the significantly changed proteins were associated with metabolism, oxidative phosphorylation, and apoptotic pathways. An analysis of the proteomics data revealed metabolic and apoptotic abnormalities in the retina from diabetic mice that were ameliorated with candesartan treatment. These results provide insight into the effects of diabetes on the retina and the role of the AT1 receptor in modulating this response.
Adaptive aperture synthesis (2005)

High-resolution imaging can be achieved by optical aperture synthesis (OAS). Such an imaging process is subject to aberrations introduced by instrumental defects and/or turbulent media. Redundant spacings calibration (RSC) is a snapshot calibration technique that can be used to calibrate OAS arrays without use of assumptions about the object being imaged. Here we investigate the analogies between RSC and adaptive optics in passive imaging applications.
PDGF-BB enhances collagen gel contraction through a PI3K-PLCγ-PKC-cofilin pathway (2017)

Cell-mediated contraction of collagenous matrices is modulated by various growth factors and cytokines, such as platelet-derived growth factor-BB (PDGF-BB). Here we used a genetic cell model to delineate defined signaling pathways that enhance collagen gel contraction downstream of ligand-stimulated platelet-derived growth factor receptor-β (PDGF-Rβ). Our data show that PDGF BB-enhanced activations of phosphatidylinositol 3'-kinase (PI3K) and phospholipase Cγ (PLCγ) were necessary for PDGF-enhanced collagen gel contraction. Importantly, other defined signaling pathways down-stream of PDGF-Rβ were, however, dispensable. The decisive roles for PI3K and PLCγ were corroborated by experiments using selective inhibitors. Furthermore, we show that de-phosphorylation and thereby activation of cofilin that is important for the turnover of actin filaments, is depended on PI3K and PLCγ down-stream of PDGF-Rβ. Moreover, inhibition of protein kinase C (PKC) by GÖ6976 and bisindolylmaleimide-II abolished cofilin de-phosphorylation, as well as PDGF-enhanced contraction. In contrast, activation of the PKC protein family by 4β-phorbol 12-myristate 13-acetate (PMA) did not accelerate collagen gel contraction although it induced long-term cofilin de-phosphorylation, showing the need of a dynamic control of cofilin de-phosphorylation for PDGF-enhanced collagen gel contraction. Taken together, our data point to the involvement of a PI3K/PLCγ-PKC-cofilin pathway in both PDGF-enhanced cofilin de-phosphorylation and PDGF-enhanced collagen gel contraction.
Evaluation of microstructure and properties in friction stir welded superaustenitic stainless steel (2009)

A superaustenitic stainless steel was friction stir welded using a polycrystalline cubic boron nitride tool, and then effect of microstructure on properties in the weld was examined. Friction stir welding resulted in a fine equiaxed grain structure in the stir zone, which raised the hardness, but a banded structure with a high density of intermetallic phases was yielded in the bottom of the stir zone. The amount of intermetallic phases in the bottom of the stir zone was significantly large at high rotational speed. The high rotational speed drastically reduced mechanical and corrosion properties of the weld due to the high density of intermetallic phases, while the reduction of the properties was not significant at low rotational speed. Findings of the present study suggest that low heat input friction stir welding is an effective method to produce a weld with relatively good properties in superaustenitic stainless steels.
Diffusing capacity reexamined: relative roles of diffusion and chemical reaction in red cell uptake of O2, CO, CO2, and NO (2004)

This paper presents an analytical expression for the diffusing capacity (Theta(t)) of the red blood cell (RBC) for any reactive gas in terms of size and shape of the RBC, thickness of the unstirred plasma layer surrounding the RBC, diffusivities and solubilities of the gas in RBC and boundary layer, hematocrit, and the slope of the dissociation curve. The expression for Theta(t) has been derived by spatial averaging of the fundamental convection-diffusion-reaction equation for O(2) in the RBC and has been generalized to all cell shapes and for other reactive gases such as CO, NO, and CO(2). The effects of size and shape of the RBC, thickness of the unstirred plasma layer, hemoglobin concentration, and hematocrit on Theta(t) have been analyzed, and the analytically obtained expression for Theta(t) has been validated by comparison with different sets of existing experimental data for O(2) and CO(2). Our results indicate that the discoidal shape of the human RBC with average dimensions of 1.6-mum thickness and 8-mum diameter is close to optimal design for O(2) uptake and that the true reaction velocity in the RBC is suppressed significantly by the mass transfer resistance in the surrounding unstirred layer. In vitro measurements using rapid-mixing technique, which measures Theta(t) in the presence of artificially created large boundary layers, substantially underpredicts the in vivo diffusing capacity of the RBC in the diffusion-controlled regime. Depending on the conditions in the RBC, uptake of less reactive gases (such as CO) undergoes transition from reaction-limited to diffusion-limited regime. For a constant set of morphological parameters, the theoretical expression for Theta(t) predicts that Theta(t,NO) > Theta(t,)(CO(2)) > Theta(t,)(O(2)) > Theta(t,CO).
Peptidoglycan from Staphylococcus aureus Induces Tissue Factor Expression and Procoagulant Activity in Human Monocytes (2002)

Staphylococcus aureus is one of the most significant pathogens in human sepsis and endocarditis. S. aureus can initiate blood coagulation, leading to the formation of microthrombi and multiorgan dysfunction in sepsis, whereas in endocarditis the bacterium induces fibrin clots on the inner surface of the heart, so-called endocardial vegetations. In the present study, we show that live and heat-killed S. aureus bacteria are potent inducers of procoagulant activity in human peripheral blood mononuclear cells. Furthermore, purified peptidoglycan, the main cell wall component of S. aureus, induced procoagulant activity in mononuclear cells in a concentration-dependent fashion. The procoagulant activity in these cells was dependent on expression of tissue factor, since antibodies to tissue factor inhibited the effect of peptidoglycan. In mononuclear cells stimulated with peptidoglycan, reverse transcription-PCR showed tissue factor gene expression, and the gene product was detected by enzyme-linked immunosorbent assay. Finally, flow cytometry identified tissue factor at the surface of CD14-positive monocytes. Peptidoglycan is known to induce proinflammatory cytokine production in monocytes. The present investigation shows that peptidoglycan also activates the extrinsic pathway of coagulation by inducing the expression of tissue factor in these cells. This mechanism helps to explain the procoagulant activity, which plays such an important role in the pathogenicity of severe S. aureus infections.