gebhart/patrepeval huggingface dataset:
UHF RFID Localization Based on Phase Evaluation of Passive Tag Arrays (2014)

This paper presents a 2-D localization system based on phase-of-arrival evaluation of passive ultrahigh frequency (UHF) radio frequency identification (RFID) transponders. To handle the ambiguity caused by phase evaluation, several tags are arranged to form a uniform linear array. A multiple input multiple output system, where sequentially each frontend is configured to work as transmitter, while the remaining frontends serve as receivers, is used to enable position estimation. For proof of concept, a local position measurement system demonstrator was built comprising conventional passive EPCglobal Class-1 Gen-2 UHF RFID tags, one commercial off-the-shelf RFID reader, several transceiver frontends, baseband hardware, and signal processing. Measurements were carried out in an indoor office environment, where the$3.5~{\rm m} \times 2.5$ m measurement zone was surrounded by drywalls and concrete floor and ceiling, and the experimental results showed robust and accurate localization with a root-mean-square deviation of 0.011 m and a maximum error of 0.032 m. These experimental results were confirmed by simulations, which were performed to determine the limits of the system accuracy.
Optimization of contrast ratio and focusable intensity in 700TW femtosecond Ti:sapphire laser facility (2010)

In this presentation, we report an improvement technique in our 700TW Ti:sapphire laser facility. In order to improve the contrast ratio, we designed a long cavity ring preamplifier. With careful alignment in each dimension of grating, we got a good focal spot after compressor. The size of focal spot was about 25μm with an f/10 off-axis-parabolic mirror (OAP). Using an f/3 OAP to focus the laser beam in experiment, we expect the laser intensity of 1021W/cm2 could be realized on the target.
Photochemistry of metal-metal bonds (1985)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemistry of metal-metal bondsThomas J. Meyer and Jonathan V. CasparCite this: Chem. Rev. 1985, 85, 3, 187–218Publication Date (Print):June 1, 1985Publication History Published online1 May 2002Published inissue 1 June 1985https://pubs.acs.org/doi/10.1021/cr00067a002https://doi.org/10.1021/cr00067a002research-articleACS PublicationsRequest reuse permissionsArticle Views1425Altmetric-Citations284LEARN 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
Modelling and Analysis of Just‐in‐Time ManufacturingSystems: A Review (1992)

Provides a comprehensive review of various modelling approaches related to Just‐in‐Time (JIT) manufacturing. JIT is essentially a philosophy for reducing lead time as well as excessive work‐in‐progress inventories. Based on this concept a number of techniques have been developed for the design, planning, scheduling and control of JIT manufacturing systems. Reports on a comparative study of these approaches for JIT manufacturing along with the conventional manufacturing approaches and alternative systems for JIT manufacture. Explores future research areas.
Project awareness : a whole school model for multidisciplinary intervention and support (2001)

Project Awareness is based on Life Skills Education within the school curriculum. It was implemented in 1998 in the Pretoria region and ran for a three year period. It involved about 15 000 pupils, 300 teachers, 15 organisations and between 30 and 40 presenters annually. The Project provides a model for schools to establish a nurturing service for learners linked to a permanent support system of teachers, parents and professionals in the community. Some activities are curricular, others extra-curricular and still others are community projects. One intervention or activity automatically leads to more activities. Guidelines are provided to promote a cooperative and inclusive approach and a summary provides a concise overview of what the advantages of the model are.
Recasting the Smooth Pursuit Eye Movement System (2004)

Primates use a combination of smooth pursuit and saccadic eye movements to stabilize the retinal image of selected objects within the high-acuity region near the fovea. Pursuit has traditionally been viewed as a relatively automatic behavior, driven by visual motion signals and mediated by pathways that connect visual areas in the cerebral cortex to motor regions in the cerebellum. However, recent findings indicate that this view needs to be reconsidered. Rather than being controlled primarily by areas in extrastriate cortex specialized for processing visual motion, pursuit involves an extended network of cortical areas, and, of these, the pursuit-related region in the frontal eye fields appears to exert the most direct influence. The traditional pathways through the cerebellum are important, but there are also newly identified routes involving structures previously associated with the control of saccades, including the basal ganglia, the superior colliculus, and nuclei in the brain stem reticular formation. These recent findings suggest that the pursuit system has a functional architecture very similar to that of the saccadic system. This viewpoint provides a new perspective on the processing steps that occur as descending control signals interact with circuits in the brain stem and cerebellum responsible for gating and executing voluntary eye movements. Although the traditional view describes pursuit and saccades as two distinct neural systems, it may be more accurate to consider the two movements as different outcomes from a shared cascade of sensory-motor functions.
Simple Risk Model Predicts Incidence of Atrial Fibrillation in a Racially and Geographically Diverse Population: the CHARGE‐AF Consortium (2013)

A risk model including variables readily available in primary care settings adequately predicted AF in diverse populations from the United States and Europe.
The effect of oxygen on the regioselectivity in the rhodium catalysed hydrosilylation of 1,3-dienesElectronic supplementary information (ESI) available: NMR spectra. See http://www.rsc.org/suppdata/p1/b1/b106143g/ (2001)

The regioselectivity of the hydrosilylation of substituted 1,3-dienes catalysed by several rhodium complexes in the presence and absence of oxygen was studied. In addition to the already known accelerating effect, the presence of oxygen strongly affected the product distribution. For 2-substituted 1,3-dienes in the presence of oxygen the regioselectivity was in the range of 1 ∶ 6 to 1 ∶ 10 in favour of the head-product, while the absence of oxygen changed the ratios to 1 ∶ 1 to 3 ∶ 1 in favour of the tail-product. When HSiPh3 was used in the presence of oxygen a single isomer was isolated in 87% yield, while in the absence of oxygen a mixture of products was produced. Control experiments indicated that a heterogeneous/colloidal catalytic system may be responsible for the preferred head-product formation.
Utilisation and storage (2010)

Energy is only of value if it can be put to use. For this to happen, equipment is needed to transform the primary energy as quickly as possible into a form that can be directly used by the consumer. The idea of an energy vector that allows energy to be transported over long distances originated at the same time as electricity. But electricity is volatile and cannot be produced just when it is needed, because methods of storing large quantities are not always available and are expensive. The storage of energy is currently a weak point in our energy supply equation and means that certain production methods have to be over-represented.
ALKYL PHOSPHORIC ACID EXTRACTIONS (1950)

These data suggest that TCD-detected microemboli are associated with an increased prevalence of prior cerebrovascular ischemia. The presence of TCD-detected microemboli could be a risk factor for cerebrovascular ischemia.
Structure of 1-(S)-(3-hydroxy-2-phosphonylmethoxypropyl)cytosine; an antiviral agent (1991)

4-Amino-1-(S)-[2-[(dihydroxyphosphoryl)-methoxy]-3-hydroxypropyl]- 2(1H)-pyrimidinone, C8H14N3O6P, Mr = 279.19, orthorhombic, P2(1)2(1)2(1), a = 6.926 (1), b = 9.084 (2), c = 18.602 (3) A, V = 1170.4 (4) A3, Z = 4, Dx = 1.58 (1) Mg m-3, lambda(Cu K alpha) = 1.54178 A, mu = 2.4 mm-1, F(000) = 584, T = 168 K, final R = 0.024 for 1393 unique observed reflections. The molecule has been found to exist in a folded zwitterionic form where the negatively charged phosphonyl group and the positively charged cytosine ring are in proximity. The crystal packing involves significant intermolecular hydrogen-bond contacts.
Use of active networks to widen the spectrum of application of piezoelectric filters (2002)

This paper describes the design of active bulk acoustic wave (BAW) piezoelectric filters with properties that are unattainable with inductorless passive piezoelectric filters. Circuit realizations for wideband (fractional bandwidth of between 5% and 50%) bandpass filters (BPF), low pass filters (LPF), highpass filters (HPF), band reject filters (BRF), and tunable filter sections are proposed. This class of filter eliminates the characteristic restrictions related to the properties of the piezoelectric material. The proposed approach would be useful for the design of integrated circuit (IC) compatible thin film BAW piezoelectric filters over a wide frequency range of up to 1-2 GHz.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Novel electrostatic column for ion projection lithography (1994)

Ion projection lithography (IPL) is being considered for high volume sub-0.25-μm lithography. A novel ion-optical column has been designed for exposing 20×20 mm2 fields at 3× reduction from stencil mask to wafer substrates. A diverging lens is realized by using the stencil mask as the first electrode of the ion-optical column. The second and third electrode form an accelerating field lens. The aberrations of the first two lenses (diverging lens and field lens) are compensated by an asymmetric Einzel lens projecting an ion image of the stencil mask openings onto the wafer substrate with better than 2 mrad telecentricity. Less than 30 nm intrafield distortion was calculated within 20×20 mm2 exposure fields. The calculation uncertainty is estimated to be about 10 nm. The calculation holds for helium ions with ≊10 keV ion energy at the stencil mask and 150 keV ion energy at the wafer plane. A virtual ion source size of 10 μm has been assumed. The calculated chromatic aberrations are less than 60 nm, assuming 6 eV energy spread of the ions extracted from a duoplasmatron source. Recently a multicusp ion source has been developed for which preliminary results indicate an energy spread of less than 2 eV. Thus, with a multicusp source chromatic aberrations of less than 20 nm are to be expected. The ion energy at the crossover between the field lens and the asymmetric Einzel lens is 200 keV. Therefore, stochastic space charge induced degradations in resolution can be kept sufficiently low. The divergence of the ion image projected to the wafer plane is less than 2 mrad. Thus, the ‘‘usable’’ depth of focus for the novel ion optics is in the order of 10 μm.
A compact attenuator integrated phase shifter with switchable trimode operations (2014)

This article presents a compact attenuator integrated phase shifter with switchable trimode operations. The proposed structure consists of simple reflection-type attenuator and phase shifter with Lange coupler for wideband performance. The reflective circuits for attenuator and phase shifter are implemented with HEMT's and varactor diodes. By separately adjusting the control voltages for attenuator and phase shifter, the designed circuit can operate in trimode: attenuation-mode, phase shift-mode (PS-mode), and loss variation compensated phase shift-mode (LVC-PS-mode). The proposed circuit is implemented in 0.15-µm GaAs low noise pHEMT process and provides the input and output return losses always better than 12 and 15 dB, respectively. Using LVC-PS-mode, the measured maximum phase shifting range of 80° with the measured insertion loss variation within ±0.05 dB from 15 to 25 GHz can be achieved. The chip size of the fabricated core is about 1.5 × 0.65 mm2 excluding test pads. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1798–1800, 2014
Printed polymer photonic devices for optical interconnect systems (2016)

Polymer photonic device fabrication usually relies on the utilization of clean-room processes, including photolithography, e-beam lithography, reactive ion etching (RIE) and lift-off methods etc, which are expensive and are limited to areas as large as a wafer. Utilizing a novel and a scalable printing process involving ink-jet printing and imprinting, we have fabricated polymer based photonic interconnect components, such as electro-optic polymer based modulators and ring resonator switches, and thermo-optic polymer switch based delay networks and demonstrated their operation. Specifically, a modulator operating at 15MHz and a 2-bit delay network providing up to 35.4ps are presented. In this paper, we also discuss the manufacturing challenges that need to be overcome in order to make roll-to-roll manufacturing practically viable. We discuss a few manufacturing challenges, such as inspection and quality control, registration, and web control, that need to be overcome in order to realize true implementation of roll-to-roll manufacturing of flexible polymer photonic systems. We have overcome these challenges, and currently utilizing our inhouse developed hardware and software tools, <10μm alignment accuracy at a 5m/min is demonstrated. Such a scalable roll-to-roll manufacturing scheme will enable the development of unique optoelectronic devices which can be used in a myriad of different applications, including communication, sensing, medicine, security, imaging, energy, lighting etc.
Construcution of a Complete Bioelectrocatalytic Electrode Composed of Alcohol Dehydrogenase- and All Electron-transfer Components-modified Graphite Felt for Diol Oxidation (1998)

Abstract A poly(acrylic acid)-coated graphite felt electrode immobilizing all bioelectrochemical reaction components of ferrocene, diaphorase, NADH and alcohol dehydrogenase in the domain of the poly(acrylic acid) layer was applied to oxidize electrocatalytically cis-1,2-cyclohexanedimethanol and 3-methyl-1,5-pentanediol to (+)-(1R, 6S)-cis-8-oxabicyclo[4.3.0]nonan-7-one and (3S)-3-methyl-δ-valerolactone, respectively, in a 0.15 M phosphate buffer (pH 8.0) at the constant potential of 0.45 V vs. SCE with high current efficiency (&gt;92%) and high optical purity (&gt;92%).
Immunogenic properties of multiple antigen peptide systems containing defined T and B epitopes (1992)

Immunization with chemically defined synthetic polymers, multiple Ag peptide (MAP) systems, containing T and B epitopes of the circumsporozoite protein of P. berghei induce high levels of circulating antibodies that are detectable several months after boosting. The anti-MAP secondary antibody response is characterized by an increase in the levels of circulating IgG and a concomitant decrease in the IgM levels. In vitro and in vivo experiments indicated that Th epitopes included in the MAP are recognized by T cells induced after immunization with the native protein and, also, that MAP-induced T cells can recognize the native protein. In addition to high levels of anti-B epitope antibodies, MAP immunization also induces antibodies against the T epitope. This anti-T epitope immune response does not affect the generation of the anti-B epitope antibodies. Immunization of different strains of mice revealed that the antibody response is consistent with the genetically restricted pattern of recognition of the T epitope. There are, however, significant differences in the levels of antibody responses observed among responder strains. The findings of this study indicate that MAP are potent immunogens capable of inducing immunologic memory and are, thus, good candidates for the development of subunit vaccines designed to induce high levels of circulating antibodies.
Antiangiogenic Activity of Brown Algae Fucoxanthin and Its Deacetylated Product, Fucoxanthinol (2006)

The antiangiogenic effects of fucoxanthin and a deacetylated product, fucoxanthinol, were examined. Fucoxanthin significantly suppressed HUVEC proliferation and tube formation at more than 10 microM, but it had no significant effect on HUVEC chemotaxis. The formation of blood vessel-like structures from CD31-positive cells was evaluated using embryonic stem cell-derived embryoid bodies. Fucoxanthin effectively suppressed the development of these structures at 10-20 microM, suggesting that it could suppress differentiation of endothelial progenitor cells into endothelial cells involving new blood vessel formation. Fucoxanthin and fucoxanthinol suppressed microvessel outgrowth in an ex vivo angiogenesis assay using a rat aortic ring, in a dose-dependent manner. These results imply that fucoxanthin having antiangiogenic activity might be useful in preventing angiogenesis-related diseases.
Splitting algorithms in noisy channels with memory (1989)

Multi-access networks are considered in which the shared channel is noisy. The authors assume a slotted-time collision-type channel, Poisson infinite-user model, and binary feedback. Due to the noise in the shared channel, the received signal may be detected as a collision even though no message or a single message is transmitted. This kind of imperfect feedback is referred to as error. A common assumption in all previous studies of multi-access algorithms in channels with errors is that the channel is memoryless. The authors consider the problem of splitting algorithms when the channel has memory. They introduce a two-state, first-order Markovian model for the channel and analyze the operation of the tree collision-resolution algorithm in this channel. They obtain a stability result, i.e., the necessary conditions on the channel parameters for stability of the algorithm. Assuming that the stability conditions hold, they calculate the throughput of the algorithm. Assuming that the stability conditions hold, they calculate the throughput of the algorithm. Extensions to more general channel moders are discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Application of Distributed Optical Fiber Sensing Technology in Surrounding Rock Deformation Control of TBM-Excavated Coal Mine Roadway (2018)

After roadway excavation, the deformation and failure of roadway surrounding rocks typically results in roadway damage or collapse. Conventional monitoring techniques, such as extensometers, stress meters, and convergence stations, are only capable to detect the stress or strain data with the shallow layers of surrounding rocks, and they require arduous manual works. Moreover, in the abovementioned monitoring techniques, the monitoring instruments are installed behind the excavation face; therefore, the strain and deformation occurring in front of excavation face cannot be detected. In order to eliminate these shortcomings, an innovative monitoring system for surrounding rock deformation control has been developed base on Brillouin optical time domain reflectometry. Compared with conventional monitoring systems, the proposed system provides a reliable, accurate, and real-time monitoring measure for roadway surrounding rock deformation control over wide extension. The optical fiber sensors are installed in boreholes which are situated ahead of the excavation face; therefore, the sensors can be protected well and the surrounding rock deformation behaviors can be studied. The proposed system has been applied within a TBM-excavated roadway in Zhangji coal mine, China. The surrounding rock deformation behaviors have been detected accurately, and the monitoring results provided essential references for surrounding rock deformation control works.
Optimum Formulation of Thermosensitive Liposome for Targeted Tumor Drug Delivery (1992)

報告番号: 乙10478 ; 学位授与年月日: 1992-01-08 ; 学位の種別: 論文博士 ; 学位の種類: 博士(薬学) ; 学位記番号: 第10478号 ; 研究科・専攻: 薬学系研究科
Purification and characterization of phosphoenolpyruvate carboxykinase from the parasitic helminth Ascaris suum. (1986)

Phosphoenolpyruvate carboxykinase has been purified from homogenates of Ascaris suum muscle strips to apparent homogeneity as determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The purification is a three-step procedure which yields pure enzyme in milligram quantities with good yield. The subunit molecular weight of the Ascaris enzyme is between 75,000 and 80,000. The native molecular weight is 83,000 as determined by gel filtration. The kinetic constants for substrates of the carboxylation reaction were determined and compared to those measured for the avian liver enzyme. From kinetic studies it appears likely that two separate roles for divalent metal ions exist in the catalytic process. Studies conducted with Mn2+ or with micromolar concentrations of Mn2+, in the presence of millimolar concentrations of Mg2+ suggest that Mn2+ but not Mg2+ binds directly to and activates the enzyme while either Mn2+ or Mg2+ may bind to the nucleotide resulting in the metal-nucleotide complex. The metal-nucleotide is the active form of the substrate for the reaction. In the presence of Mg2+, an increase in the Mn2+ concentration results in a decrease in the Km for P-enolpyruvate suggesting a direct role for Mn2+ stimulation and regulation of activity. The concentrations of Mn2+ and Mg2+ in Ascaris muscle strips were determined by atomic absorption spectroscopy and support the proposed hypothesis of a specific Mn2+ activation of the enzyme. The nucleotides ATP and ITP act as competitive inhibitors against GTP with KI values of 0.50 and 0.75 mM, respectively. ITP is a competitive inhibitor against both IDP and P-enolpyruvate, suggesting overlapping binding sites for the two substrates on the enzyme.
Convolutional neural networks as aid in core lithofacies classification (2019)

Artificial intelligence methods have a very wide range of applications. From speech recognition to self-driving cars, the development of modern deep-learning architectures is helping researchers to achieve new levels of accuracy in different fields. Although deep convolutional neural networks (CNNs) (a kind of deep-learning technique) have reached or surpassed human-level performance in image recognition tasks, little has been done to transport this new image classification technology to geoscientific problems. We have developed what we believe to be the first use of CNNs to identify lithofacies in cores. We use highly accurate models (trained with millions of images) and transfer learning to classify images of cored carbonate rocks. We found that different modern CNN architectures can achieve high levels of lithologic image classification accuracy (approximately 90%) and can aid in the core description task. This core image classification technique has the potential to greatly standardize and accelerate the description process. We also provide the community with a new set of labeled data that can be used for further geologic/data science studies.