gebhart/patrepeval huggingface dataset:
New Pattern Reconfigurable Antenna with 4 U-Slots for MIMO Applications (2019)

New compact and low profile pattern reconfigurable antenna with four U-slots is proposed. The size of the antenna is 42 mm * 40 mm * 0.72 mm, and the used substrate is FR-4 with a dielectric constant of 4.4 and a loss tangent of 0.02. The antenna has four pattern configurations which are directed (in HFSS simulation) to phi = 85, 120, 245 and 285 degrees, with simulated peak gains ranging between - 0.11 dB to 2.7 dB at theta = 90 degrees, and with a simulated overlapped 10-dB bandwidth from 3.65 GHz to 3.752 GHz (Overlapped bandwidth is 102 MHz). The simulated efficiencies for all configurations are ranging from 50% to 59%.
Automation of a Surface Sampling Probe/Electrospray Mass Spectrometry System (2005)

An image analysis automation concept and the associated software (HandsFree TLC/MS) were developed to control the surface sampling probe-to-surface distance during operation of a surface sampling electrospray system. This automation system enables both "hands-free" formation of the liquid microjunction used to sample material from the surface and hands-free reoptimization of the microjunction thickness during a surface scan to achieve a fully automated surface sampling system. The image analysis concept and the practical implementation of the monitoring and automated adjustment of the sampling probe-to-surface distance (i.e., liquid microjunction thickness) are presented. The added capabilities for the preexisting surface sampling electrospray system afforded through this software control are illustrated by an example of automated scanning of multiple development lanes on a reversed-phase C8 TLC plate and by imaging inked lettering on a paper surface. The post data acquisition processing and data display aspects of the software package are also discussed.
Membrane Fusion Tropism and Heterotypic Functional Activities of the<i>Nipah Virus</i>and<i>Hendra Virus</i>Envelope Glycoproteins (2002)

Nipah virus (NiV) and Hendra virus (HeV) are novel paramyxoviruses from pigs and horses, respectively, that are responsible for fatal zoonotic infections of humans. The unique genetic and biological characteristics of these emerging agents has led to their classification as the prototypic members of a new genus within the Paramyxovirinae subfamily called HENIPAVIRUS: These viruses are most closely related to members of the genus Morbillivirus and infect cells through a pH-independent membrane fusion event mediated by the actions of their attachment (G) and fusion (F) glycoproteins. Understanding their cell biological features and exploring the functional characteristics of the NiV and HeV glycoproteins will help define important properties of these emerging viruses and may provide new insights into paramyxovirus membrane fusion mechanisms. Using a recombinant vaccinia virus system and a quantitative assay for fusion, we demonstrate NiV glycoprotein function and the same pattern of cellular tropism recently reported for HeV-mediated fusion, suggesting that NiV likely uses the same cellular receptor for infection. Fusion specificity was verified by inhibition with a specific antiserum or peptides derived from the alpha-helical heptads of NiV or HeV F. Like that of HeV, NiV-mediated fusion also requires both F and G. Finally, interactions between the glycoproteins of the paramyxoviruses have not been well defined, but here we show that the NiV and HeV glycoproteins are capable of highly efficient heterotypic functional activity with each other. However, no heterotypic activity was observed with envelope glycoproteins of the morbilliviruses Measles virus and Canine distemper virus.
Improving 802.11 Fingerprinting of Similar Devices by Cooperative Fingerprinting (2013)

Fingerprinting 802.11 devices has been proposed to identify devices in order to mitigate IEEE 802.11 weaknesses. However, important limitations prevent any real deployment. On the first hand, fingerprinting has a low accuracy when the devices have similar hardware and software. On the second hand, attackers may forge signatures to impersonate devices. We propose Diversity, a cooperative fingerprinting approach that improves accuracy of existing fingerprinting methods while relying only on off-the-shelf hardware. Diversity improves fingerprinting up to the reliable individual identification of identical 802.11 devices. This approach modifies the signature of devices by modifying slightly their traffic attributes. We evaluate Diversity with both a simulation and an implementation, achieving a false positive rate of 0% with a dataset including identical devices. Finally, we complement Diversity by mechanisms for detecting attackers that try to forge signatures.
A Camera Model for Line-Scan Cameras with Telecentric Lenses (2020)

Abstract We propose a camera model for line-scan cameras with telecentric lenses. The camera model assumes a linear relative motion with constant velocity between the camera and the object. It allows to model lens distortions, while supporting arbitrary positions of the line sensor with respect to the optical axis. We comprehensively examine the degeneracies of the camera model and propose methods to handle them. Furthermore, we examine the relation of the proposed camera model to affine cameras. In addition, we propose an algorithm to calibrate telecentric line-scan cameras using a planar calibration object. We perform an extensive evaluation of the proposed camera model that establishes the validity and accuracy of the proposed model. We also show that even for lenses with very small lens distortions, the distortions are statistically highly significant. Therefore, they cannot be omitted in real-world applications.
Pixelated phase-mask dynamic interferometer (2004)

We demonstrate a new type of spatial phase-shifting, dynamic interferometer that can acquire phase-shifted interferograms in a single camera frame. The interferometer is constructed with a pixelated phase-mask aligned to a detector array. The phase-mask encodes a high-frequency spatial interference pattern on two collinear and orthogonally polarized reference and test beams. The phase-difference between the two beams can be calculated using conventional N-bucket algorithms or by spatial convolution. The wide spectral response of the mask and true common-path design permits operation with a wide variety of interferometer front ends, and with virtually any light source including white-light.
Human Adrenal Cells in Culture Produce Both Ouabain-like and Dihydroouabain-like Factors (2002)

OLF and Dh-OLF are secreted by human adrenal cells, and antibodies specific to these two compounds can be developed, using the plant-derived counterparts as antigens. The secretion of Dh-OLF is responsive to a cAMP-dependent stimulation mechanism, whereas OLF is not. Our data suggest that either the secretory or biosynthetic pathways for production of these two compounds by human adrenal cells may have different control mechanisms or that they may be linked via a precursor-product relationship.
New pediatric vision screener, part II: electronics, software, signal processing and validation (2016)

Despite the relatively small initial sample size, we believe that the PVS instrument design, the analysis methods employed, and the device as a whole, will prove valuable for mass screening of children.
New Consistency Equation for Time-of-Flight PET (2013)

The redundancy in 3D time-of-flight (TOF) PET data can be exploited to reduce data storage or to estimate unmeasured data samples caused by defective or missing detectors. Mathematically, redundancy is expressed by consistency conditions which can be expressed either in terms of the 3D Fourier transform of the data or as a pair of partial differential equations (PDE). The benefit of the latter is that the PDEs are local and therefore can be applied even if some data samples are missing. This paper describes a new consistency PDE for 3D TOF PET, which only involves data within a single ”segment” (data subset with fixed polar angle). The PDE is applied to rebin 3D TOF data onto 3D non-TOF data. The proposed rebinning algorithm reduces to the methods based on the most likely annihilation point in the limit where the TOF resolution tends to zero. Numerical results with simulated and phantom data illustrate the performance of the algorithm.
Rho Kinase Inhibition with Fasudil in the SOD1G93A Mouse Model of Amyotrophic Lateral Sclerosis—Symptomatic Treatment Potential after Disease Onset (2017)

Despite an improved understanding of the genetic background and the pathomechanisms of amyotrophic lateral sclerosis (ALS) no novel disease-modifying therapies have been successfully implemented in clinical routine. Riluzole still remains the only clinically approved substance in human ALS treatment with limited efficacy. We have previously identified pharmacological rho kinase (ROCK) inhibitors as orally applicable substances in SOD1.G93A transgenic ALS mice (SOD1<sup>G93A</sup>), which are able to extend survival time and improve motor function after presymptomatic treatment. Here, we have evaluated the therapeutic effect of the orally administered ROCK inhibitor Fasudil starting at a symptomatic disease stage, more realistically reflecting the clinical situation. Oral Fasudil treatment was initiated at a symptomatic stage at 80 days of life (d80) with 30 or 100 mg/kg body weight in both female and male mice. While baseline neurological scoring and survival were not influenced, Fasudil significantly improved motor behavior in male mice. Spinal cord pathology of motoneurons (MN) and infiltrating microglial cells (MG) at disease end-stage were not significantly modified. Although treatment after symptom onset was less potent than treatment in asymptomatic animals, our study shows the therapeutic benefits of this well-tolerated substance, which is already in clinical use for other indications.
Trafficking Patterns of β-Arrestin and G Protein-coupled Receptors Determined by the Kinetics of β-Arrestin Deubiquitination (2003)

Agonist-dependent internalization of G protein-coupled receptors via clathrin-coated pits is dependent on the adaptor protein beta-arrestin, which interacts with elements of the endocytic machinery such as AP2 and clathrin. For the beta(2)-adrenergic receptor (beta(2)AR) this requires ubiquitination of beta-arrestin by E3 ubiquitin ligase, Mdm2. Based on trafficking patterns and affinity of beta-arrestin, G protein-coupled receptors are categorized into two classes. For class A receptors (e.g. beta(2)AR), which recycle rapidly, beta-arrestin directs the receptors to clathrin-coated pits but does not internalize with them. For class B receptors (e.g. V2 vasopressin receptors), which recycle slowly, beta-arrestin internalizes with the receptor into endosomes. In COS-7 and human embryonic kidney (HEK)-293 cells, stimulation of the beta(2)AR or V2 vasopressin receptor leads, respectively, to transient or stable beta-arrestin ubiquitination. The time course of ubiquitination and deubiquitination of beta-arrestin correlates with its association with and dissociation from each type of receptor. Chimeric receptors, constructed by switching the cytoplasmic tails of the two classes of receptors (beta(2)AR and V2 vasopressin receptors), demonstrate reversal of the patterns of both beta-arrestin trafficking and beta-arrestin ubiquitination. To explore the functional consequences of beta-arrestin ubiquitination we constructed a yellow fluorescent protein-tagged beta-arrestin2-ubiquitin chimera that cannot be deubiquitinated by cellular deubiquitinases. This "permanently ubiquitinated" beta-arrestin did not dissociate from the beta(2)AR but rather internalized with it into endosomes, thus transforming this class A receptor into a class B receptor with respect to its trafficking pattern. Overexpression of this beta-arrestin ubiquitin chimera in HEK-293 cells also results in enhancement of beta(2)AR internalization and degradation. In the presence of N-ethylmaleimide (an inhibitor of deubiquitinating enzymes), coimmunoprecipitation of the receptor and beta-arrestin was increased dramatically, suggesting that deubiquitination of beta-arrestin triggers its dissociation from the receptor. Thus the ubiquitination status of beta-arrestin determines the stability of the receptor-beta-arrestin complex as well as the trafficking pattern of beta-arrestin.
Zero Shot Learning via Multi-scale Manifold Regularization (2017)

We address zero-shot learning using a new manifold alignment framework based on a localized multi-scale transform on graphs. Our inference approach includes a smoothness criterion for a function mapping nodes on a graph (visual representation) onto a linear space (semantic representation), which we optimize using multi-scale graph wavelets. The robustness of the ensuing scheme allows us to operate with automatically generated semantic annotations, resulting in an algorithm that is entirely free of manual supervision, and yet improves the state-of-the-art as measured on benchmark datasets.
Tape transport control with suppression of time-varying tension disturbances (2017)

Disturbance suppression in the transport system of tape drives is essential for achieving high volumetric densities in tape storage, as improved tension control will enable operation with thinner tape media. In addition, tension variations lead to dimensional changes in the cross-track direction of the tape that must be accounted for in the track width budget. Hence, better tension control enables a higher track density. Furthermore, fluctuations of the tape velocity and tension around the nominal values impact the performance of the data channels, and consequently also the achievable areal recording density. In a tape transport system, disturbances are mainly induced by reel eccentricities that lead to time-varying tension disturbances. In this paper, the tension disturbances are first characterized using a strain-gauge sensor included in one of the rollers that determine the tape path. Then, a second characterization method that does not rely on a strain-gauge sensor is introduced. The new method is based on an estimate of the tension variation signal, which is derived from the difference of head lateral position measurements obtained by reading servo patterns on two adjacent servo bands. A tension feedback system is proposed, which uses time-varying controllers that adapt their frequency characteristics depending on the longitudinal tape position. The closed-loop system is designed to enhance disturbance suppression at the reel rotation frequencies. Experimental results are presented to illustrate the performance of the proposed tape transport control system.
JAM-ME: Exploiting Jamming to Accomplish Drone Mission (2019)

In this paper, we show, for the first time in the literature, that the common assumption that jamming is an effective way to neutralise drones, is false. In particular, we propose JAM-ME a solution that allows the drone to exploit an adversarial jamming signal to implement an emergency but yet effective navigation system, enabling the drone to accomplish its mission. Our contributions are manifold: first, we revise the jamming based anti-drone techniques; second, we introduce a basic model for JAM-ME and accompanying mathematical tool-rooted in systems control theory. Further, we show through an extensive simulation campaign that JAM-ME do allow a drone to accomplish its mission in a jammed area. Finally, we also discuss possible techniques to mitigate the impact of JAM-ME as well as its limitations, and we conclude highlighting further research directions. We believe that our contribution, other than being interesting on its own, can pave the way for further research in the highlighted directions, as well as having a compelling follow up from a practitioner point of view.
Heat resistant polyphosphazene polymers (1981)

Polymers of carboranyl substituted polyphosphazene are stable at high temperatures and produce insulating char upon pyrolysis. Substituted compounds are prepared by heat polymerizing carboranyl halophosphazene, which is obtained by reacting lithium carborane with, for example, hexachlorocyclotriphosphazene under anhydrous conditions. Chlorine of polymer may be replaced by aryloxy and alkoxy groups.
Multicomponent Synthesis of Highly Substituted Imidazolines via a Silicon‐Mediated 1,3‐Dipolar Cycloaddition. (2003)

Abstract For Abstract see ChemInform Abstract in Full Text.
Parallel imaging with phase scrambling (2014)

Phase scrambling can be used to perform parallel imaging acceleration without acquisition of separate coil calibration data, demonstrated here for a 3D-Cartesian trajectory. Further research is required to prove the applicability to other 2D and 3D sampling schemes.
Generalized frequency division multiplexing with space and frequency index modulation (2017)

Generalized frequency division multiplexing (GFDM) has been regarded as one of the promising candidates for the physical layer (PHY) of fifth generation (5G) wireless networks. Multiple-input multiple-output (MIMO) friendliness is a key ability for a physical layer scheme to match the foreseen requirements of 5G wireless networks. On the other hand, index modulation (IM) concept, which relies on conveying additional information bits through indices of certain transmit entities, is an emerging technique to provide better spectral efficiency. In this paper, a novel MIMO-GFDM system, which combines GFDM with space and frequency IM (SFIM) technique, is proposed. In the GFDM-SFIM scheme, the transmit antenna, the constellation mode and the classic constellation symbols are determined according to incoming bit stream. The main contribution of the paper is the construction of the GFDM-SFIM system model including joint MIMO detection and GFDM demodulation performed by the GFDM-SFIM receiver. We evaluate the error performance of the GFDM-SFIM scheme as well as prove its superiority by making comparisons with the spatial modulation (SM) GFDM system and orthogonal frequency division multiplexing (OFDM) SFIM system for Rayleigh multipath fading channels.
Efficient support of XQuery Full Text in SQL/XML enabled RDBMS (2014)

There has been more than decade of efforts of supporting storage, query and update XML documents in RDBMS. XML enabled RDBMS supports SQL/XML standard that defines XMLType as a SQL data type and allows XQuery/XPath embedded in XMLQuery(), XMLExists() and XMLTABLE() in SQL. In XML enabled RDBMS, both relational data and XML documents can be managed in one system and queried using SQL/XML language. However, the use case of management of document centric XML is not well-addressed due to the lacking of full text query constructs in XQuery. Recently, XQuery Full Text (XQFT) becomes the W3C recommendation. In this paper, we show how XQFT can be supported efficiently in SQL/XML for full text search of XML documents managed by XML enabled RDBMS, such as Oracle XMLDB. We present architecture of a new XML Full Text Index, XQuery compile time and run time enhancements to efficiently support XQFT in SQL/XML. We present our design rationale on how to exploit Information Retrieval (IR) techniques for XQFT support in RDBMS. The new XML Full Text Index can index common XML physical storage forms: such as text XML, binary XML, relational decomposition of the XML. Although our work is built within Oracle XMLDB, all of the presented principles and techniques in this paper are valuable enough to RDBMS industry that needs to effectively and efficiently support of XQFT over persisted XML documents.
Beyond pristine MOFs: carbon dioxide capture by metal–organic frameworks (MOFs)-derived porous carbon materials (2017)

Porous carbon materials were synthesized by pyrolysis of zinc-based MOFs. These materials exhibited superior CO<sub>2</sub> capacities and better CO<sub>2</sub> separation ability under humid conditions compared to those of the pristine MOFs.
<title>Design of knowledge-based image retrieval system: implications from radiologists' cognitive processes</title> (1992)

In a radiological examination reading, radiologists usually compare a newly generated examination with previous examinations of the same patient. For this reason, the retrieval of old images is a critical design requirement of totally digital radiology using Picture Archiving and Communication Systems (PACS). To achieve the required performance in a PACS with a hierarchical and possibly distributed image archival system, pre-fetching of images from slower or remote storage devices to the local buffers of workstations is proposed. Image Retrieval Expert System (IRES) is a knowledge-based image retrieval system which will predict and then pre-fetch relevant old images. Previous work on IRES design focused on the knowledge acquisition phase and the development of an efficient modeling methodology and architecture. The goal of this paper is to evaluate the effectiveness of the current IRES design and to identify appropriate directions for exploring other design features and alternatives by means of a cognitive study and an associated survey study.
Fundamental Wireless Performance of a Building (2021)

Over 80 percent of wireless traffic already takes place in buildings. Like water, gas, and electricity, wireless communication is becoming one of the most fundamental utilities of a building. It is well known that building structures have a significant impact on in-building wireless networks. If we seek to achieve the optimal network performance indoors, buildings should be designed with the objective of maximizing wireless performance. So far, wireless performance has not yet been considered when designing a building. In this article, we introduce a novel and interdisciplinary concept of building wireless performance (BWP) to a wide audience in both wireless communications and building design, emphasizing its broad impacts on wireless network development and deployment, and on building layout/material design. We first give an overview of the BWP evaluation framework proposed in our state-of-the-art works and explain their interconnections. Then, we outline the potential research directions in this exciting research area to encourage further interdisciplinary research.
CD1d-Restricted and TCR-Mediated Activation of V <sub>α</sub> 14 NKT Cells by Glycosylceramides (1997)

Natural killer T (NKT) lymphocytes express an invariant T cell antigen receptor (TCR) encoded by the Valpha14 and Jalpha281 gene segments. A glycosylceramide-containing alpha-anomeric sugar with a longer fatty acyl chain (C26) and sphingosine base (C18) was identified as a ligand for this TCR. Glycosylceramide-mediated proliferative responses of Valpha14 NKT cells were abrogated by treatment with chloroquine-concanamycin A or by monoclonal antibodies against CD1d/Vbeta8, CD40/CD40L, or B7/CTLA-4/CD28, but not by interference with the function of a transporter-associated protein. Thus, this lymphocyte shares distinct recognition systems with either T or NK cells.
Enhancing the photoluminescence quantum yields of blue-emitting cationic iridium(<scp>iii</scp>) complexes bearing bisphosphine ligands (2015)

We demonstrate a turn-on strategy for blue-emitting [Ir(C^N)<sub>2</sub>(P^P)]PF<sub>6</sub> complexes and apply them to EL devices.
Polarization, phase and amplitude control of ultrafast laser pulses with a single linear spatial light modulator (2008)

Complete control over the polarization, phase and amplitude state of an ultrafast laser pulse is demonstrated using a single, linear spatial light modulator placed in a near-common-path, polarization-split Martinez stretcher.