gebhart/patrepeval huggingface dataset:
Rao-Blackwellized particle filter for pattern matching indoor localisation (2010)

Pattern matching localisation based on Received Signal Strength Indication (RSSI) is widely implemented in the Wireless Local Area Network (WLAN). This implementation is commonly with a filtering method to achieve better location estimation accuracy. A Kalman filter (KF) is an optimal filter, if requirements on linear/Gaussian state space model are met. Otherwise, a particle filter (PF) should be used to deal with nonlinear/non-Gaussian state space model. However, in the real situation especially in the localisation field, the state space model may be linear/Gaussian and nonlinear/non-Gaussian. Therefore, there should be a filtering method that can accommodate both linear/Gaussian and nonlinear/non-Gaussian state space model such as Rao Blackwellized particle filter (RBPF). RBPF implemented in the pattern matching localisation system is described and its performance is compared against KF and PF. Those three filtering methods are evaluated in the test bed. To the best of our knowledge, implementing RBPF and performance comparison against KF and PF in the pattern matching indoor localisation in WLAN environment have never been published before.
An on-line digital phase sensitive detector in the range 2 mHz-2 kHz (1983)

A digital phase sensitive detector (PSD) has been designed and built which may be used in conjunction with a SQUID-based AC susceptibility measurement system. The system operates in a useful frequency range from 2 mHz-2 kHz and measures both in-phase and the quadrature component. The digital PSD, which is based on a small minicomputer, corrects for DC drift and flux quantum jumps of the SQUID and operates in 'real time'. An analysis of its design and several properties and measuring results are presented
Topography of apolipoprotein B in subcellular fractions from rabbit liver (1993)

Conference Article| May 01 1993 Topography of apolipoprotein B in subcellular fractions from rabbit liver JANE WILKINSON; JANE WILKINSON #Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN Search for other works by this author on: This Site PubMed Google Scholar JOAN A. HIGGINS; JOAN A. HIGGINS #Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN Search for other works by this author on: This Site PubMed Google Scholar PIETER H. E. GROOT; PIETER H. E. GROOT *Smith Kline Beecham Research Laboratories, Welwyn, Herts, AL6 9AR Search for other works by this author on: This Site PubMed Google Scholar ERMANNO GHERARDI; ERMANNO GHERARDI +ICRF Cell Interactions Laboratory, Department of Medicine, Addenbrookes Hospital Cambridge, CB2 2QQ Search for other works by this author on: This Site PubMed Google Scholar DAVID E. BOWYER DAVID E. BOWYER **Department of Pathology, Cambridge University, Cambridge CB2 1QP Search for other works by this author on: This Site PubMed Google Scholar Author and article information Publisher: Portland Press Ltd Online ISSN: 1470-8752 Print ISSN: 0300-5127 © 1993 Biochemical Society1993 Biochem Soc Trans (1993) 21 (2): 126S. https://doi.org/10.1042/bst021126s Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn Email Cite Icon Cite Get Permissions Citation JANE WILKINSON, JOAN A. HIGGINS, PIETER H. E. GROOT, ERMANNO GHERARDI, DAVID E. BOWYER; Topography of apolipoprotein B in subcellular fractions from rabbit liver. Biochem Soc Trans 1 May 1993; 21 (2): 126S. doi: https://doi.org/10.1042/bst021126s Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsBiochemical Society Transactions Search Advanced Search This content is only available as a PDF. © 1993 Biochemical Society1993 Article PDF first page preview Close Modal You do not currently have access to this content.
Fabrication of Perovskite Manganite (La,Sr)MnO3 Thin Films by Chemical Solution Deposition and Their Low-Field Magnetoresistance Properties at Room Temperature (2001)

(La,Sr)MnO 3 (LSMO) thin films were fabricated on (100)SrTiO 3 single crystal substrates by the chemical solution deposition (CSD) process and their properties were evaluated at room temperature. All the films sintered at the temperatures ranging from 600 to 900°C were crystallized into perovskite single-phase LSMO with random orientation. The resistivity of the films at zero magnetic field decreased with the elevation of sintering temperature and reached 19 mΩcm in the film sintered at 900°C. The saturation magnetization of the films increased with the elevation of sintering temperature and reached 410 emu/cm 3 in the film sintered at 900°C. The LSMO thin films sintered above 700°C had a distinct grain structure and exhibited double peaks in magnetoresistance (MR) curves. The top values of the MR curves increased with the elevation of sintering temperature and the difference between the top value and minimum one at a magnetic field of 500 Oe was 0.57% in the film sintered at 900°C.
Metastable state population and kinetic energy distributions of sputtered Ni and Co atoms studied by resonance ionization mass spectrometry (1997)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation E. Vandeweert, P. Lievens, V. Philipsen, W. Bouwen, P. Thoen, H. Weidele, R. E. Silverans; Metastable state population and kinetic energy distributions of sputtered Ni and Co atoms studied by resonance ionization mass spectrometry. AIP Conf. Proc. 15 January 1997; 388 (1): 151–154. https://doi.org/10.1063/1.52174 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
One Volt Organic Transistor (2005)

Solution-based anodization of titanium can deliver high-capacitance, pinhole-free TiO2 films where the film thickness is controlled by the anodization voltage. In conjunction with the organic semiconductor pentacene, such films can be used to manufacture transistors that operate at less than 1 V (see Figure). Low-cost, disposable devices with low available voltages could take advantage of these flexible organic transistors.
Classifying Malware Represented as Control Flow Graphs using Deep Graph Convolutional Neural Network (2019)

Malware have been one of the biggest cyber threats in the digital world for a long time. Existing machine learning based malware classification methods rely on handcrafted features extracted from raw binary files or disassembled code. The diversity of such features created has made it hard to build generic malware classification systems that work effectively across different operational environments. To strike a balance between generality and performance, we explore new machine learning techniques to classify malware programs represented as their control flow graphs (CFGs). To overcome the drawbacks of existing malware analysis methods using inefficient and nonadaptive graph matching techniques, in this work, we build a new system that uses deep graph convolutional neural network to embed structural information inherent in CFGs for effective yet efficient malware classification. We use two large independent datasets that contain more than 20K malware samples to evaluate our proposed system and the experimental results show that it can classify CFG-represented malware programs with performance comparable to those of the state-of-the-art methods applied on handcrafted malware features.
Etiology and Long‐Term Outcome of Patients Undergoing Pericardiocentesis (2017)

In this contemporary tertiary-center cohort, pericardial effusions often represent the primary instance of a new malignancy, underscoring the importance of cytological analyses of noniatrogenic effusions in patients without known cancer, as survival is significantly worse. In cancer patients, however, the presence of pericardial malignant cytology does not appear to affect outcome significantly.
Local Computed Tomography Using a THz Quantum Cascade Laser (2010)

This paper investigates local reconstruction techniques for extracting region-of-interest (ROI) from a 3-D terahertz imaging setup using a quantum cascade laser (QCL). The advantage of local reconstruction is the reduction in the required measurement time. Difficulties with limited projection angles and image noise make the development of accurate reconstruction algorithms particularly challenging. In this paper, both wavelet-based and traditional filtered back projection (FBP) techniques are investigated. Segmentation algorithms are applied to reconstructed images with low contrast and the resultant segments are compared with a known ground truth to explore the ability of a QCL to image target objects with complex contours. In our experiments, a polystyrene object with a hole drilled inside is used as the imaging target. The region of interest is adjusted through changing the size of the exposure regions. It is found that 3-D local reconstruction of the interior hole suffers from shape distortion, since scattering caused by the target's exterior contours introduces errors in the measured optical parameters of the object. It is found that wavelet-based local computed tomography for terahertz image reconstruction results in lower misclassification of pixels than traditional FBP algorithms.
Hardware implementation of a Kullback-Leibler Divergence based signal anomaly detector (2009)

A Field-Programmable Gate Array (FPGA) based implementation of the Kullback-Leibler Divergence (KLD) algorithm for real-time detection of anomalies in periodic signals is presented. To aid in the development of the hardware platform, an optimised, application specific, differential-equation version of the KLD equation is also proposed. Successful tests of the implementation against 10 MHz wireless signals show that the algorithm is indeed capable of real-time analysis of high speed test vectors.
Phase matched transmission line design for high-speed optical modulators (2014)

In this paper we present a transmission line design to achieve phase matched lines for high-speed optical modulators. The layout presented is for transmission lines that start off equally spaced. The mathematical relation to achieve phase matching between the lines is derived by making the path length difference zero. Example transmission line layouts using co-planar waveguide are generated based upon the specifications of some Mach-Zehnder Modulators (MZM) and in-phase/quadrature (IQ) MZMs that have been designed. The design method is then verified by comparing the phase of the transmission lines in a commercial full-wave electromagnetic program.
Estimation of Uptake Rate Constants for PCB Congeners Accumulated by Semipermeable Membrane Devices and Brown Trout (Salmo trutta) (1998)

The triolein-filled semipermeable membrane device (SPMD) is a simple and effective method of assessing the presence of waterborne hydrophobic chemicals. Uptake rate constants for individual chemicals are needed to accurately relate the amounts of chemicals accumulated by the SPMD to dissolved water concentrations. Brown trout and SPMDs were exposed to PCB-contaminated groundwater in a spring for 28 days to calculate and compare uptake rates of specific PCB congeners by the two matrixes. Total PCB congener concentrations in water samples from the spring were assessed and corrected for estimated total organic carbon (TOC) sorption to estimate total dissolved concentrations. Whole and dissolved concentrations averaged 4.9 and 3.7 μg/L, respectively, during the exposure. Total concentrations of PCBs in fish rose from 0.06 to 118.3 μg/g during the 28-day exposure, while concentrations in the SPMD rose from 0.03 to 203.4 μg/g. Uptake rate constants (k1) estimated for SPMDs and brown trout were very similar, with k1 values for SPMDs ranging from one to two times those of the fish. The pattern of congener uptake by the fish and SPMDs was also similar. The rates of uptake generally increased or decreased with increasing KOW, depending on the assumption of presence or absence of TOC.
BVIT: A Visible Imaging, Photon Counting Instrument on the Southern African Large Telescope for High Time Resolution Astronomy (2012)

Abstract The Berkeley Visible Imaging Tube (BVIT) was installed on the Southern African Large Telescope (SALT) in January 2009 and subsequently refurbished in August 2010. BVIT is an imaging, photon counting camera with multi-color (B, V, R, and H-α) capability. At the heart of BVIT is a 25 mm diameter active area, microchannel plate, sealed tube device with a visible photocathode and a cross-delay line readout. For each detected event the readout electronics record an X, Y position, an event pulse size (P), and an arrival time (T) — recorded with 25 ns precision. Post-acquisition processing of the X, Y, P, and T photon lists can be used to build images and light curves (to whatever sampling rate is supported by the signal to noise of the source as detected). The instrument design is presented as well as some examples of data acquired with the instrument on SALT.
Rational Prepayments and the Valuation of Collateralized Mortgage Obligations (1994)

Abstract This article presents a procedure for evaluating collateralized mortgage obligation (CMO) tranches. The solution procedure is in the spirit of a dynamic programming problem in which an individual mortgagor's decision to prepay is the feedback control variable―the mortgagor seeks to minimize the value of the mortgage subject to refinancing costs. We employ a two‐step procedure to solve this dynamic programming problem. The first step uses an implicit finite difference backward solution procedure to determine the “optimal” prepayment boundary for a class of mortgagors, each of whom confronts the same proportional refinancing cost. This step is repeated for several different classes of mortgagors that differ in the level of refinancing costs that they confront. The outcome of this first step is a series of prepayment boundaries―one set of boundaries for each level of refinancing costs (i.e., one set of boundaries for each refinancing cost category of mortgagors). In the second step, the prepayment boundaries determined in the first step are used in conjunction with Monte Carlo simulation to value the CMO tranches. The essence of the second step is that when the simulated interest rate hits the boundary for a particular class, it triggers a prepayment scenario for that class of mortgagors. We conduct extensive sensitivity analysis to determine the robustness of this approach (and our solution procedure) to alternative single‐factor models of the term structure of interest rates and to alternative specifications of the distribution of refinancing cost levels confronted by mortgagors. The sensitivity analysis indicates that CMO tranche valuation is not particularly sensitive to alternative models of the term structure so long as the models are consistent with the current yield curve, but, even when alternative specifications of the refinancing cost categories generate nearly identical values for the collateral underlying the CMO (i.e., the generic mortgage‐backed securities), the resulting tranche values can differ widely between the two specifications. The results point out the importance of accurate estimation of the distribution of refinancing costs when the rational valuation model is used for the analysis of CMO tranches.
A Study of Transversely vs Longitudinally Fractured Horizontal Wells in a Moderate-Permeability Gas Reservoir (2012)

Abstract Transverse fractures created from horizontal wells are a common choice in tight and shale gas reservoirs. Previous work has shown that proppant pack permeability reduction due to non-Darcy flow in a transverse fracture from a horizontal well causes significant reduction in the fracture performance when the gas formation permeability exceeds 0.5 md. There are other configurations and architectures such as aligning the well trajectory with the fracture, either by drilling horizontal wells in the direction that results in longitudinal fractures or by just sticking with drilling vertical wells. However, when drilling and fracturing costs are considered, productivity is not the only optimization consideration. The field example illustrates a case when the apparent choice to use transverse fractures from horizontal wells proved to be suboptimal from the productivity perspective, but fundamental considering economics. Parametric studies for permeability ranging from 0.01 to 5 md illustrate the importance of economics in addition to physical performance. For similar reservoir characteristics, the optimum fractured well architecture varies considerably, and therefore an extensive reservoir engineering approach may be necessary beyond the well completions and/or current prejudices and inadequate understanding.
Molecular cloning and over-expression of a fructosyltransferase from Aspergillus niger QU10. (2015)

The main commercial production of fructooligosaccharides (FOS) comes from enzymatic transformation using sucrose as substrate by microbial enzyme fructosyltransferase. A fructosyltransferase genomic DNA was isolated from Aspergillus niger QU10 by PCR. The nucleotide sequence showed a 1 941 bp size, and has been submitted to GenBank (KF699529). The cDNA of the fructosyltransferase, containing an open reading frame of 1 887 bp, was further cloned by RT-PCR. The fructosyltransferase gene from Aspergillus niger was functionally expressed both in Escherichia coli and Pichia pastoris GS 115. The highest activity value for the construction with the α-factor signal peptide reached 431 U/mL after 3 days of incubation. The recombinant enzyme is extensively glycosylated, and the active form is probably represented by a homodimer with an apparent molecular mass of 200 kDa as judged from mobility in seminative PAGE gels. The extracellular recombinant enzyme converted sucrose mostly to FOS, mainly 1-kestose and nystose, liberating glucose. FOS reached a maximal value and represented about 58% of total sugars present in the reaction mixture after 4 h reaction. The results suggest that the availability of recombinant Pichia pastoris as a new source of a FOS-producing enzyme might result of biotechnology interest for industrial application.
A coloured petri net based approach for estimating execution time and energy consumption in embedded systems (2008)

This paper presents a Coloured Petri net based approach for estimating execution time and energy consumption in embedded systems. The aim of this work is to provide, in the design phase, a mechanism that helps the designer informing the energy consumption and the performance of the code in analysis. Experimental results have demonstrated an accuracy of 96% using the proposed formal method in comparison with the values obtained with the hardware platform.
Vacancy enhanced aggregation of nitrogen in diamond (1980)

The aggregation of nitrogen in type Ib diamond, at 1500 degrees C in vacuo, has been investigated for natural and synthetic samples containing around 50 ppm and 500 ppm isolated substitutional nitrogen respectively. The rate constant for the aggregation process in untreated diamonds is very much less than that reported previously for samples subjected to a hydrostatic pressure of approximately 6 GPa, but may be increased by a factor of at least 50 if the diamonds are irradiated with approximately 1022 2 MeV electrons/m2. The vacancy concentration produced by such an irradiation is only approximately 5 ppm and is proposed that at high nitrogen concentrations the aggregation process involves the multiple release and retrapping of vacancies. Analysis of infrared absorption spectra before and after aggregation of the nitrogen suggests that the conversion factor normally used to calculate substitutional nitrogen concentrations from the strength of the 1130 cm-1 absorption band is too low by a factor of almost two.
Biology-inspired Architecture for Situation Management (2006)

Situation management is a rapidly developing science combining new techniques for data collection with advanced methods of data fusion to facilitate the process leading to correct decisions prescribing action. Current research focuses on reducing increasing amounts of diverse data to knowledge used by decision makers and on reducing time between observations, decisions and actions. We propose a new architecture modeled after biological ecosystems where motes are autonomous and intelligent, yet cooperate with local neighborhoods. While situation management research is currently dominated by military applications, advances envisioned for industrial and business applications have similar requirements. NASA has requirements for intelligent and autonomous systems in future missions that can benefit from advances in situation management. We describe requirements for the integrated vehicle health management program where our biology-inspired architecture provides a layered approach and decisions can be made at the proper level to improve safety, reduce costs, and improve efficiency in making diagnostic and prognostic assessments of the structural integrity, aerodynamic characteristics, and operation of aircraft
Microwave‐Assisted Synthesis Utilizing Supported Reagents: A Rapid and Versatile Synthesis of 1,5‐Diarylpyrazoles. (2006)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
P4‐245: PHENOME‐WIDE ASSOCIATION AND EPIGENETIC INTERROGATION OF AD/FTD RISK LOCI (2018)

GWAS is a powerful approach in identifying genetic risk loci. However, the functional elucidation on how a risk locus is related to disease still requires much functional genomics follow up. Further, a genetic risk locus may have pleiotropic effects. 13 candidate variants implicated in Alzheimer's Disease (AD) and/or frontotemporal dementia (FTD) were examined closely using two complementary approaches: a phenome-wide association studies (PheWAS) approach using a database of 23andMe research participants to examine the pleiotropic effects of risk variants; and an epigenetic profiling functional genomic study to examine if there is any differential methylation positions (DMPs) comparing 91 AD cases to 60 cognitively normal controls in superior temporal gyrus (STG) region of postmortem brain tissues. PheWAS study showed that both APOE variants defining ε2/ε3/ε4 alleles and rs646776 had significant associations with metabolic/cardiovascular and longevity traits. APOE variants were additional significantly associated with neurological traits. Both APOE variants and CLU variant were significantly associated with eye phenotypes. Additionally, DMPs from CLU, CD2AP, ABCA7 and BIN1 were detected. Multiple variants displayed pleiotropic effects with APOE variants and rs646776 sharing association with similar phenotypes. Both APOE and CLU variants also shared similar associations with eye phenotypes. The PheWAS results demonstrated the interrelation between neurological and metabolic/cardiovascular traits as well as eye phenotype via common genetic mediators. The cohort size for Alzheimer's disease used in this study consisted of ∼640 cases and 158k controls, and therefore only APOE variants, the loci with largest effect size, were confirmed to be associated with neurological traits. The epigenetic functional study however confirmed that CLU, CD2AP, ABCA7 and BIN1 DMPs were differentially methylated in AD compared to cognitively normal controls.