gebhart/patrepeval huggingface dataset:
Reactions of model compounds in the presence of pyrene and molybdenum sulfide (MoS2) to simulate coprocessing (1992)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactions of model compounds in the presence of pyrene and molybdenum sulfide (MoS2) to simulate coprocessingPing Shun Ting, Christine W. Curtis, and Donald C. CronauerCite this: Energy Fuels 1992, 6, 4, 511–518Publication Date (Print):July 1, 1992Publication History Published online1 May 2002Published inissue 1 July 1992https://doi.org/10.1021/ef00034a024RIGHTS & PERMISSIONSArticle Views191Altmetric-Citations11LEARN 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 InReddit PDF (941 KB) Get e-Alerts Get e-Alerts
Detection and interference suppression for ultra-wideband signaling with analog processing and one bit A/D (2004)

Standard DSP-centric communication receivers are difficult to implement for reception of ultra-wideband (UWB) signals because of the high cost and power consumption of high-precision analog-to-digital (A/D) converters at multi GHz sampling rates. In this paper, therefore, the possibility of UWB reception based on low-complexity analog processing and/or one bit A/D conversion is investigated. For detection in additive white Gaussian noise (AWGN), we refine classical results to show that the performance loss due to one bit A/D is only about 2 dB. However, we then observe that the performance loss due to quantization in the presence of strong narrowband interference is significant. This motivates our design of a modified front end that performs analog interference suppression using a hardlimiter and an adaptive amplifier gain. This front end, followed by either a matched filter or one bit A/D, yields acceptable performance even with strong narrowband interference.
Noise robust two-dimensional blind deconvolution of ultrasound images (2002)

This paper presents a new method for two-dimensional blind homomorphic deconvolution of medical B-scan ultrasound images. The method is based on noise robust two-dimensional phase unwrapping and a noise robust procedure to obtain the pulse in the complex cepstrum domain. Ordinary Wiener filtering is used in the subsequent deconvolution. The resulting images became much sharper, with better defined tissue structures compared to the ordinary images. The deconvolved images had a resolution gain in the order of 3 to 6, and the signal to noise ratio doubled for many of these images. The method gave stable results through several image sequences. It can be implemented in real time.
Obstacle avoidance and orientation determination for a remote operated vehicle (2014)

In this paper, we propose a sweeping sonar obstacle avoidance method for autonomous navigation of mobile robots. The sweeping of the single sonar module using a motorized stage increase the coverage and reduce the electronics for ultrasonic modules. The orientation of the vehicle is determined using digital compass. The battery status is continuously monitored and fed back to the operator. Wireless communication is implemented for transmission of sensor data and control commands. Development of hardware and software modules for a three wheeled robot carrying sensors and its experimental results are presented.
Throughput scaling in wireless networks with restricted mobility (2007)

We study throughput scaling in an ad-hoc wireless network where the communication domain is divided into overlapping neighborhoods and n mobile nodes are restricted to move within their assigned neighborhood. In our model, when a node is located in a region not shared with any other neighborhood, it transmits to nodes of its own neighborhood only; when it is in an area that overlaps with another neighborhood, it transmits to nodes of the overlapping neighborhood. Communication between source-destination pairs is subject to interference from other nodes. By adopting a deterministic approach, we obtain an achievable throughput which is a function of properties of the node locations and neighborhood dimensions. As special cases of our neighborhood model, the results of P. Gupta and P.R. Kumar (2000) and M. Grossglauser and D. Tse (2002) can be recovered. We then study the case of random placement of nodes with n <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">alpha</sup> neighborhoods, where 0 les alpha les 1, and achieve a throughput of Omega (n <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1-alpha/2</sup> ). Hence our model captures every order of growth for the throughput, encompassing the results from both P. Gupta and P.R. Kumar (2000) and M. Grossglauser and D. Tse (2002) as extreme situations
Direct Targeting of VMS through Amplitude Consistent Seismic Imaging (2013)

Based on physical property measurements of core samples and the often observed difference in elastic properties from these there should be a significant difference in seismic amplitude between mineralisation and the surrounding host rocks. These results indicate that relative amplitude preservation processing may be of importance in the use of seismic data for the targeting of mineral resources, particularly in the case of massive ores. Such ‘true relative amplitude’ processing is not easy to achieve due to intrinsically low signal to noise ratio in hard rock environments, complex 3D geology, steeply dipping structures, high seismic velocities and often patchy and poor reflectivity. To help reduce the ambiguity in targeting and increase the likelihood of success we have worked on careful re-processing of 3D seismic data with the application of true amplitude preservation. We compare the anomalous amplitude zones that are related to massive sulphide bodies using a true amplitude seismic cube and a conventionally processed cube with the application of AGC (automatic gain control). A higher level comparison is conducted after seismic calibration with boreholes. The zonation and precision of targeting is discussed in this paper.
Enhancement of retrovirus-mediated gene transduction efficiency by transient overexpression of the amphotropic receptor, GLVR-2 (1995)

Retroviral vectors are excellent tools for gene transfer in experimental animal systems, and are potential vehicles for gene therapy in humans. Retroviral vector DNA, after entry into a cell, integrates into cellular chromosomal DNA, leading to stable gene expression. This property is especially advantageous for genetic transduction of actively proliferating cells such as epithelial cells and activated lymphocytes. However, cells from particular human tissues have been found to be resistant to retroviral gene transduction even if viral stocks of relatively high titer (>10 c.f.u7ml) are used. Since the retroviral envelope glycoprotein specifically binds to a cell surface receptor, relative or absolute deficiency of receptor molecules could be one of the causes of this poor transduction efficiency. In this report, we describe a method to increase retroviral gene transduction efficiency by transient overexpression of GLVR-2, a receptor for amphotropic retrovirus which has been recently identified as a member of the gibbon ape leukemia virus receptor family (1).
A Comparative Study on Solar-based Multilevel Inverters as A substitute for OLTCs (2022)

In this paper, a comparative study is proposed on a converter-based OLTC (COLTC) when it is utilized as a substitute for an electromechanical tap changer in power transformers to vary the output voltage. Different structures of converters have been studied and compared in the converter-based OLTC, and the transient voltages and the maximum regulation of the desired voltage on the load side have been taken into account. All inverters are supplied by a photovoltaic system or any DC system and are in series with a grid voltage on the output side. A simulation has been performed in the PLECS software to compare the results of the converters while they are used in COLTC. The results prove that the diode-clamped multilevel inverter is a better choice in the application of the converter-based OLTC, as it has lower transient voltage, and also the voltage regulation in the load side is performed much better than the other multilevel structures.
A New, Long-Lasting Competitive Inhibitor of Angiotensin (1972)

An analog of angiotensin II, [Sar(1), Ile(8)]-angiotensin II, has a potent and long-lasting competitive antagonistic effect against angiotensin II when tested for its myotropic action on the isolated rabbit aorta and for its effect on blood pressure in anesthetized cats and dogs. Compared to [Ile(8)]-angiotensin II, the new analog has equal antagonistic potency on the isolated system but a much greater potency in vivo. It is assumed that sarcosine in position 1 protects the peptide against enzymatic degradation and enhances its half-life. This study demonstrates that the modification in both positions 1 and 8 are important for the in vivo antagonistic potencies of angiotensin analogs.
SUGARY WAYS TO MAKE NANOTUBES DISSOLVE (2002)

RETURN TO ISSUEPREVNewsNEXTSUGARY WAYS TO MAKE NANOTUBES DISSOLVEStarch, gum arabic, and glucosamine allow carbon nanotubes to slip into aqueous solutionRON DAGANIView Author Information C&EN WASHINGTONCite this: Chem. Eng. News 2002, 80, 28, 38–39Publication Date (Print):July 15, 2002Publication History Published online13 November 2010Published inissue 15 July 2002https://pubs.acs.org/doi/10.1021/cen-v080n028.p038https://doi.org/10.1021/cen-v080n028.p038newsACS PublicationsCopyright © 2002 AMERICAN CHEMICAL SOCIETYArticle Views14Altmetric-Citations9LEARN 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 options SUBJECTS:Carbon nanotubes Get e-Alerts
Influence of feed solids concentration on the performance of hydrocyclones (1990)

Abstract Even though the influence of solids concentration in the feed on the separation efficiency of hydrocyclones has long been recognized, a systematic research on the change in pressure drop across the hydrocyclone and the latter's separation characteristics has thus far been lacking. If all other operating parameters are kept constant, an increase in feed concentration generally leads to a coarser cut size, reduced sharpness of separation and a rise in pressure drop. Apart from the particles hindering one another's radial motion, the limited capacity of the apex valve and the changes in the flow field within the hydrocyclone cause additional particles to be entrained by the overflow. The flow ratio thus becomes an additional parameter in determining the cyclone efficiency. A theoretical model, which takes these effects into account, has been developed and successfully tested against experimental data.
A modified explant technique of HeartWare ventricular assist device for bridge to recovery (2017)

The HeartWare left ventricular assist device is a miniaturized, continuous centrifugal-flow pump. The implantation technique is well described and relatively standardized across different institutions. However, there still exists a technical concern about handling the inflow cannula at the time of device explant. Specifically, the removal of the sewing ring and plicating the apical defect en masse may distort the geometry of the left ventricle and impart myocardial dysfunction. Additionally, a prefabricated repair mechanism by the manufacturer is not readily available in all countries (i.e. USA). Here, we describe a technique to address the apical core defect, using a tailor-made plug and leaving the sewing ring in situ, at the time of the HeartWare left ventricular assist device explant.
Modifying Stokes' function to reduce the error of geoid undulation computations (1981)

A comparison is made of the errors in determining the geoid undulation according to the conventional Molodenskii truncation theory and its modifications as suggested by Molodenskii (1958) and Meissl (1971). The undulation is assumed to be computed from gravity anomalies in a spherical cap and a finite set of harmonic potential coefficients (e.g., GEM 9 or GEM 10B). Only the effects of errors in the coefficients, as well as the neglect of higher degree coefficients, are considered. It is found that the error estimates (rms values) are significantly lower for any of the modified methods than for the conventional method. For example, errorless and continuous gravity data in a cap with 10° radius and the GEM 9 coefficients together yield undulations with an average error of 109 cm if the unmodified truncation theory is applied and 41 cm and 33 cm with Meissl's method and a Molodenskii type of modification, respectively.
Deep defects and their electron-capture cross sections in polymorphous silicon-germanium thin films (2005)

Hydrogenated silicon-germanium alloys (SiGe:H) are deposited by plasma-enhanced chemical vapor deposition in a plasma regime close to that of the formation of powder. It is thus possible to obtain nanostructured materials that we call polymorphous materials, pm-Si1−xGex:H. Studies of space-charge-limited currents and space-charge relaxation allow to get information on midgap states originating from Ge. It is observed that the electron-capture cross section of states at the Fermi level increases linearly with their concentration. This is supported by modulated photocurrent experiments. Finally, it is shown that the variations of both the Ge dangling bond concentration and their electron-capture cross section with Ge content account for the photoresponse in these materials.
Fabrication and classical characterisation of an integrated optic controlled phase gate (2013)

Optical quantum computing (QC) increasingly uses integrated optics based experiments which permit circuit compactness and phase stability [1]. However, despite the rapid adaptations of integrated waveguide devices for quantum photonics, initial gate demonstrations operate in post-selection, thus not allowing scaling of a quantum circuit beyond the depth of a single gate. Recently, a number of quantum circuits have been demonstrated using the femtosecond laser direct write (FLDW) technique [2]. This technique induces refractive index change in glass substrates which can form three-dimensional waveguide devices. Here we demonstrate a potentially scalable waveguide gate for QC, a controlled-phase gate or Knill gate, produced using the FLDW technique. This gate produces a phase shift on a target qubit conditional on the state of a control qubit, as shown in Fig. 1(a). It requires four photons for operation, two of which act as the target and control path-encoded qubits and two ancillas which herald the successful operation of the circuit [3].
Integrated optic front end for polarization diversity reception (1990)

An integrated optic circuit on silicon, which can be used in balanced polarization diversity detection, is demonstrated. The device consists of a 3 dB coupler and two polarization splitters. It has excess losses of 1.8 and 3.0 dB for TM and TE polarizations, respectively, and around −22 dB rejection of the unwanted polarizations at each output.
Robust sensing films for pathogen detection and medical diagnostics (2009)

Our team has developed polyethylene glycol (PEG)-modified, self-assembled monolayers (SAMs) for biological detection on either planar or spherical substrates, which resist non-specific binding while facilitating specific ligand attachment. The preparation and characterization of these thin films, their validation against B. anthracis protective antigen (PA) in a sandwich assay format, and the application of these thin films for quantitative analysis of several medically interesting targets (breast cancer, tuberculosis, and influenza) will be shown.
Cherenkov excited short-wavelength infrared fluorescence imaging in vivo with external beam radiation (2018)

Cherenkov emission induced by external beam radiation therapy from a clinical linear accelerator (LINAC) can be used to excite phosphors deep in biological tissues. As with all luminescence imaging, there is a desire to minimize the spectral overlap between the excitation light and emission wavelengths, here between the Cherenkov and the phosphor. Cherenkov excited short-wavelength infrared (SWIR, 1000 to 1700 nm) fluorescence imaging has been demonstrated for the first time, using long Stokes-shift fluorophore PdSe quantum dots (QD) with nanosecond lifetime and an optimized SWIR detection. The 1 / λ2 intensity spectrum characteristic of Cherenkov emission leads to low overlap of this into the fluorescence spectrum of PdSe QDs in the SWIR range. Additionally, using a SWIR camera itself inherently ignores the stronger Cherenkov emission wavelengths dominant across the visible spectrum. The SWIR luminescence was shown to extend the depth sensitivity of Cherenkov imaging, which could be used for applications in radiotherapy sensing and imaging in human tissue with targeted molecular probes.
Multilayered Axially Modulated Cylindrical Metasurfaces (2018)

An axially modulated metasurface leaky-wave antenna (AMLWA), with multiple dielectric layers, is proposed for conformal and wideband applications. The bandwidth performance of a single-layered AMLWA is compared to that of a three-layered and a five-layered AMLWA. It is shown that the bandwidth of the gain and the scan-angle range increase with the increase in the number of dielectric layers.
Optimum structure for a radial basis functions based equalizer (2005)

A solution of a nonlinear equalizer based on the radial basis functions neural network is given in this paper. We consider a bipolar signal which passes through a dispersive channel and is corrupted by additive noise. When the distortion caused by the channel is nonlinear, the classical methods fail. The task of signal recovery is viewed as a pattern recognition problem, where each transmitted signal has been assigned a class and the equalizer's task is to find an optimum boundary between the classes. We give a solution for the minimum necessary number of hidden units for a radial basis functions (RBF) neural network implementation for the equalizer. Simulation results, where the RBF neural network is used as an equalizer are provided.
Visualization of Predictive Distributions of Driving Behavior Using Bayesian Deep Learning Based on Pressure Distributions and Driving Information (2021)

In order to provide driving support that matches the driver's intentions, it is desirable to predict the driver's intended driving behavior in advance. However, no matter what method is used, there is a problem of incorrect prediction. In this study, in order to avoid incorrect prediction of driving behavior, we investigated whether the characteristics of correct and incorrect prediction can be captured by visualizing the probability of driving behavior prediction with histograms. In this experiment, pressure distribution and driving operation information were input to a Bayesian Convolutional Neural Network (BCNN), and the parameters of the trained model were sampled multiple times to obtain multiple prediction probabilities, and a histogram of the prediction probability of driving behavior was obtained. As a result of the experiment, when the driving behavior was "Going straight", "Turn right", or "Turn left", there was a difference in the relative frequencies of the low and high prediction probability classes between correct and incorrect predictions, suggesting the possibility of correct and incorrect prediction classification based on the characteristics of the histogram of prediction probabilities.
Localisation of the MRX3 gene for non-specific X linked mental retardation. (1991)

A family is described with five affected males segregating a new gene for non-specific X linked mental retardation (MRX). Linkage analysis localised the gene at Xq28-qter. The maximum lod score was 2.89 with DXS52 (St14) at theta = 0.0. A recombinant was observed with DXS304 (U6.2) defining the proximal limit to the localisation. No evidence for linkage was determined using markers at several points along the remainder of the X chromosome, including the regions known to contain MRX1 and MRX2. This delineates the third gene for non-specific X linked mental retardation, MRX3.
State-based Gaussian selection in large vocabulary continuous speech recognition using HMMs (1999)

This paper investigates the use of Gaussian selection (GS) to increase the speed of a large vocabulary speech recognition system. Typically, 30-70% of the computational time of a continuous density hidden Markov model-based (HMM-based) speech recognizer is spent calculating probabilities. The aim of CS is to reduce this load by selecting the subset of Gaussian component likelihoods that should be computed given a particular input vector. This paper examines new techniques for obtaining "good" Gaussian subsets or "shortlists." All the new schemes make use of state information, specifically, to which state each of the Gaussian components belongs. In this way, a maximum number of Gaussian components per state may be specified, hence reducing the size of the shortlist. The first technique introduced is a simple extension of the standard GS method, which uses this state information. Then, more complex schemes based on maximizing the likelihood of the training data are proposed. These new approaches are compared with the standard GS scheme on a large vocabulary speech recognition task. On this task, the use of state information reduced the percentage of Gaussians computed to 10-15%, compared with 20-30% for the standard GS scheme, with little degradation in performance.
A λ/2 CPW resonator BPF with multiple attenuation poles and its miniaturization (2003)

Very simple method for creating multiple attenuation poles of a bandpass filter (BPF) based on a /spl lambda//2 coplanar waveguide (CPW) resonator with tap-coupling is proposed, Moreover, miniaturization of the CPW-BPF using a stepped impedance resonator (SIR) is also carried out, As a consequence, the bandpass characteristics with multiple attenuation poles are obtained together with the reduced filter size. The derivation of multiple attenuation poles and a method for reduced filter size are also detailed,.