gebhart/patrepeval huggingface dataset:
A sparse signal reconstruction perspective for source localization with sensor arrays (2005)

We present a source localization method based on a sparse representation of sensor measurements with an overcomplete basis composed of samples from the array manifold. We enforce sparsity by imposing penalties based on the /spl lscr//sub 1/-norm. A number of recent theoretical results on sparsifying properties of /spl lscr//sub 1/ penalties justify this choice. Explicitly enforcing the sparsity of the representation is motivated by a desire to obtain a sharp estimate of the spatial spectrum that exhibits super-resolution. We propose to use the singular value decomposition (SVD) of the data matrix to summarize multiple time or frequency samples. Our formulation leads to an optimization problem, which we solve efficiently in a second-order cone (SOC) programming framework by an interior point implementation. We propose a grid refinement method to mitigate the effects of limiting estimates to a grid of spatial locations and introduce an automatic selection criterion for the regularization parameter involved in our approach. We demonstrate the effectiveness of the method on simulated data by plots of spatial spectra and by comparing the estimator variance to the Crame/spl acute/r-Rao bound (CRB). We observe that our approach has a number of advantages over other source localization techniques, including increased resolution, improved robustness to noise, limitations in data quantity, and correlation of the sources, as well as not requiring an accurate initialization.
High-speed real-time 3D shape measurement based on adaptive depth constraint (2018)

Stereo phase unwrapping (SPU) has been increasingly applied to high-speed real-time fringe projection profilometry (FPP) because it can retrieve the absolute phase or matching points in a stereo FPP system without projecting or acquiring additional fringe patterns. Based on a pre-defined measurement volume, artificial maximum/minimum phase maps can be created solely using geometric constraints of the FPP system, permitting phase unwrapping on a pixel-by-pixel basis. However, when high-frequency fringes are used, the phase ambiguities will increase which makes SPU unreliable. Several auxiliary techniques have been proposed to enhance the robustness of SPU, but their flexibility still needs to be improved. In this paper, we proposed an adaptive depth constraint (ADC) approach for high-speed real-time 3D shape measurement, where the measurement depth volume for geometric constraints is adaptively updated according to the current reconstructed geometry. By utilizing the spatio-temporal correlation of moving objects under measurement, a customized and tighter depth constraint can be defined, which helps enhance the robustness of SPU over a large measurement volume. Besides, two complementary techniques, including simplified left-right consistency check and feedback mechanism based on valid area, are introduced to further increase the robustness and flexibility of the ADC. Experimental results demonstrate the success of our proposed SPU approach in recovering absolute 3D geometries of both simple and complicated objects with only three phase-shifted fringe images.
Selective Synthesis of C<sub>2</sub>–C<sub>4</sub> Olefins and C<sub>5+</sub> Hydrocarbons over Unpromoted and Cerium-promoted Iron Catalysts Supported on Ion Exchanged (H, K) Zeolite-Y (1999)

Hydrogenation of CO 2 to hydrocarbons is carried out on unpromoted and Ce-promoted iron catalysts supported on ion exchanged (H, K) zeolite-Y; the results suggest that the Fe–Ce/KY catalyst has significant advantages being highly selective for C 2 –C 4 olefins and C 5+ hydrocarbons.
A Precision Ethylene‐Styrene Copolymer with High Styrene Content from Ring‐Opening Metathesis Polymerization of 4‐Phenylcyclopentene (2016)

Ring-opening metathesis polymerization of 4-phenylcyclopentene is investigated for the first time under various conditions. Thermodynamic analysis reveals a polymerization enthalpy and entropy sufficient for high molar mass and conversions at lower temperatures. In one example, neat polymerization using Hoveyda-Grubbs second generation catalyst at -15 °C yields 81% conversion to poly(4-phenylcyclopentene) (P4PCP) with a number average molar mass of 151 kg mol(-1) and dispersity of 1.77. Quantitative homogeneous hydrogenation of P4PCP results in a precision ethylene-styrene copolymer (H2 -P4PCP) with a phenyl branch at every fifth carbon along the backbone. This equates to a perfectly alternating trimethylene-styrene sequence with 71.2% w/w styrene content that is inaccessible through molecular catalyst copolymerization strategies. Differential scanning calorimetry confirms P4PCP and H2 -P4PCP are amorphous materials with similar glass transition temperatures (Tg ) of 17 ± 2 °C. Both materials present well-defined styrenic analogs for application in specialty materials or composites where lower softening temperatures may be desired.
PARASYMPATHETIC BLOCKING AGENTS. II<sup>1, 2</sup> (1955)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPARASYMPATHETIC BLOCKING AGENTS. II1, 2STEPHEN B. COAN and DOMENICK PAPACite this: J. Org. Chem. 1955, 20, 6, 774–779Publication Date (Print):June 1, 1955Publication History Published online1 May 2002Published inissue 1 June 1955https://doi.org/10.1021/jo01124a010RIGHTS & PERMISSIONSArticle Views92Altmetric-Citations5LEARN 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 (428 KB) Get e-Alertsclose Get e-Alerts
Mechanical design of humanoid robot platform KHR-3 (KAIST humanoid robot - 3: HUBO) (2006)

KHR-I has been developed on the purpose of research about biped walking. It has 21 DOF without hands and head, which has 12 DOF in legs, 1 DOF in torso, and 8 DOF in arms. The objective of KHR-2 (41 DOF) was to develop the humanoid which can walk on the living-floor with human-like appearance and movement. KHR-3 has the purpose that it has more human-like features, movements and human-friendly character. Mechanical design of KHR-3 is presented on this paper. The design concept, lower body design, upper body design and actuator selection of joints are included in this paper. We have developed and published KHR-I and 2 in last three years. KHR3 platform is based on KHR-2. It has 41 degree of freedom (DOF), 125 cm height, and 55 kg weight. The differences from KHR-2 are mechanical stiffness and detailed design of the frame in the mechanical point of view. Stiffness of the frame is increased and detailed design about joints and link frame has been modified or redesigned. We introduced exterior art design concept on KHR-2 in beginning, and the concept has been implemented on KHR-3 in mechanical design stage.
Proteomic profiling of CHO cells with enhanced rhBMP‐2 productivity following co‐expression of PACEsol (2008)

Chinese hamster ovary (CHO) cells are widely used for the production of recombinant protein biopharmaceuticals. The purpose of this study was to investigate differences in the proteome of CHO DUKX cells expressing recombinant human bone morphogenetic protein-2 (rhBMP-2) (G5 cells) compared to cells also expressing soluble exogenous paired basic amino acid cleaving enzyme soluble paired basic amino acid cleaving enzyme (PACEsol) (3C9 cells), which has been previously found to improve the post-translational processing of the mature rhBMP-2 dimer. PACEsol co-expression was also associated with a significant increase (almost four-fold) in cellular productivity of rhBMP-2 protein. Differential proteomic expression profiling using 2-D DIGE and MALDI-TOF MS was performed to compare 3C9 and G5 cells, and revealed a list of 60 proteins that showed differential expression (up/downregulated), with a variety of different cellular functions. A substantial number of these altered proteins were found to have chaperone activity, involved with protein folding, assembly and secretion, as well as a number of proteins involved in protein translation. These results support the use of proteomic profiling as a valuable tool towards understanding the biology of bioprocess cultures.
Transient Blood-Brain Barrier Permeability following Profound Temporary Global Ischaemia: An Experimental Study Using <sup>14</sup>C-AIB (1989)

The influence of reperfusion after profound incomplete forebrain ischaemia on blood-brain barrier (BBB) permeability to a small protein tracer was studied in male Sprague-Dawley rats. The mean cortical blood to brain transfer constant (Ki) for 14C-amino isobutyric acid (AIB) was significantly greater at 3 and 6 h of reperfusion, 2.5 times the mean values of controls (p less than 0.05) (2.5 microliter g-1 min-1 and 1.0 microliters g-1 min-1 respectively), but had returned to control values after reperfusion for 24 h. Analysis of distribution of Ki values showed that following 15 min and 30 min of profound ischaemia, there was a significant increase in transfer of AIB across the blood-brain barrier (BBB) after recirculation for up to 6 h, though there was no evidence of protein extravasation as assessed by Evans Blue (EB) dye. After 24 h of reperfusion, the BBB to AIB was restored, and Ki values had returned to control values. It is concluded that following transient global ischaemia, the BBB may recover rapidly.
Mechanical control of growth: ideas, facts and challenges (2017)

In his classic book <i>On Growth and Form</i>, D'Arcy Thompson discussed the necessity of a physical and mathematical approach to understanding the relationship between growth and form. The past century has seen extraordinary advances in our understanding of biological components and processes contributing to organismal morphogenesis, but the mathematical and physical principles involved have not received comparable attention. The most obvious entry of physics into morphogenesis is via tissue mechanics. In this Review, we discuss the fundamental role of mechanical interactions between cells induced by growth in shaping a tissue. Non-uniform growth can lead to accumulation of mechanical stress, which in the context of two-dimensional sheets of tissue can specify the shape it assumes in three dimensions. A special class of growth patterns - conformal growth - does not lead to the accumulation of stress and can generate a rich variety of planar tissue shapes. Conversely, mechanical stress can provide a regulatory feedback signal into the growth control circuit. Both theory and experiment support a key role for mechanical interactions in shaping tissues and, via mechanical feedback, controlling epithelial growth.
Forecasting seasonal outbreaks of influenza (2012)

Influenza recurs seasonally in temperate regions of the world; however, our ability to predict the timing, duration, and magnitude of local seasonal outbreaks of influenza remains limited. Here we develop a framework for initializing real-time forecasts of seasonal influenza outbreaks, using a data assimilation technique commonly applied in numerical weather prediction. The availability of real-time, web-based estimates of local influenza infection rates makes this type of quantitative forecasting possible. Retrospective ensemble forecasts are generated on a weekly basis following assimilation of these web-based estimates for the 2003-2008 influenza seasons in New York City. The findings indicate that real-time skillful predictions of peak timing can be made more than 7 wk in advance of the actual peak. In addition, confidence in those predictions can be inferred from the spread of the forecast ensemble. This work represents an initial step in the development of a statistically rigorous system for real-time forecast of seasonal influenza.
X-ray study of the oxidation of liquid-gallium surfaces (1997)

The oxidation of liquid-gallium surfaces has been investigated with surface x-ray scattering techniques. By exposing the liquid-metal surface at room temperature to doses on the order of 180 L of oxygen where 1 L=${10}^{\mathrm{\ensuremath{-}}6}$ Torr s, a gallium oxide film with a well-defined thickness of \ensuremath{\sim}5 \AA{} readily forms. The oxide thickness and roughness of the liquid/oxide and oxide/vapor interfaces do not change with oxygen dosage up to 1600 L nor with temperature up to 573 K. This is in contrast to what is observed for the bare liquid-Ga surface, which is roughened significantly by thermally excited capillary waves with temperatures up to only 443 K. This is a good indication that the oxide layer provides rigidity to the liquid surface and is likely a solid; grazing-incidence measurements suggest that the film is amorphous or poorly crystallized. Based on comparisons with known crystal structures, models are suggested for the atomic arrangements in the gallium oxide layer and its interface with the underlying liquid.
On beam-based access technology for 5G (2016)

Since the first study item on New Services and Markets Technology Enablers (FS_SMARTER) was approved in March 2015 [1], Third Generation Partnership Project (3GPP) standardization activities (e.g., Study Items and Work Items) on fifth generation (5G) access technology have been continuously launched in 3GPP Technical Specification Groups (TSGs).
Prostase/KLK-L1 is a new member of the human kallikrein gene family, is expressed in prostate and breast tissues, and is hormonally regulated. (1999)

By using the positional candidate gene approach, we were able to identify a novel serine protease gene that maps to chromosome 19q13.3-q13.4. Screening of expressed sequence tags allowed us to establish the expression of the gene and delineate its genomic organization (GenBank accession no. AF135023). We named this gene KLK-L1. Another group, by using a subtraction hybridization method, cloned the same gene and named it prostase (GenBank accession nos. AF113140 and AF113141). Here, we describe the precise mapping and localization of the prostase/KLK-L1 gene between the known genes KLK2 (human glandular kallikrein) and zyme (also known as protease M/neurosin). The direction of transcription of prostase/KLK-L1 is the same as that of zyme but opposite to that of KLK2 and prostate-specific antigen genes. Contrary to the initial impression, prostase/KLK-L1 is expressed at high levels not only in prostate tissue but also in testis, mammary gland, adrenals, uterus, thyroid, and salivary glands. We have further demonstrated with in vitro experiments with the breast carcinoma cell line BT-474 that this gene is expressed and that its expression is up-regulated by androgens and progestins. On the basis of information on other genes that are localized in the same region (prostate-specific antigen, KLK2, zyme, and normal epithelial cell specific-1 gene), we speculate that prostase/KLK-L1 may be involved in the pathogenesis and/or progression of prostate, breast, and possibly other malignancies.
Automatic dispersion compensation for WDM system by mode-splitting of tone-modulated CS-RZ signal (2002)

A novel automatic dispersion compensation system for WDM systems that is based on mode-splitting of tone-modulated CS-RZ signals is proposed and its compensation capability is demonstrated by 100 GHz spaced 8×43 Gbit/s WDM transmission.
Accumulation of Biglycan and Perlecan, but Not Versican, in Lesions of Murine Models of Atherosclerosis (2002)

Proteoglycan accumulation within the arterial intima has been implicated in lipoprotein retention and in atherosclerosis progression in humans. Two commonly studied murine models of atherosclerosis, the apolipoprotein E (apoE)-deficient (apoE-/-) mouse and the low density lipoprotein receptor-deficient (LDLR-/-) mouse, develop arterial lesions similar to those of human atherosclerosis. However, specific proteoglycan classes that accumulate in lesions of these mice and their relation to the retention of specific apolipoproteins have not been previously determined. In this report, we characterized the distribution of proteoglycans (versican, biglycan, and perlecan) and apolipoproteins (apoB, apoA-I, and apoE) in proximal aortic lesions of chow-fed apoE-/- and LDLR-/- mice at 10, 52, and 73 weeks of age. We observed that similar to the apoE-/- mice, the LDLR-/- mice develop intermediate and advanced plaques within 52 weeks of age. Perlecan and biglycan (both are proteoglycans) appeared early in lesion development with distinct expression patterns as the plaques advanced. Versican, a major proteoglycan detected in human plaques, was mostly absent in both strains. ApoA-I and apoB were detected in early through advanced lesions in regions of proteoglycan accumulation in both strains. Our results indicate that proteoglycans may contribute to the retention of lipoproteins at the earliest stage of atherosclerosis in murine models of atherosclerosis.
Thermally conductive nylon 6,6 and polycarbonate based resins. I. Synergistic effects of carbon fillers (2003)

Abstract Increasing the thermal conductivity of typically insulating polymers, such as nylon 6,6, opens new markets. A thermally conductive resin can be used for heat‐sink applications. This research focused on performing compounding runs followed by injection molding and thermal conductivity testing of carbon filled nylon 6,6 and polycarbonate based resins. The three carbon fillers investigated included an electrically conductive carbon black, synthetic graphite particles, and a milled pitch‐based carbon fiber. For each polymer, conductive resins were produced and tested that contained varying amounts of these single carbon fillers. In addition, combinations of fillers were investigated by conducting a full 2 3 factorial design and a complete replicate in each polymer. The objective of this article was to determine the effects and interactions of each filler on the thermal conductivity properties of the conductive resins. From the through‐plane thermal conductivity results, it was determined that for both nylon 6,6 and polycarbonate based resins, synthetic graphite particles caused the largest increase in composite thermal conductivity, followed by carbon fibers. The combination of synthetic graphite particles and carbon fiber had the third most important effect on composite thermal conductivity. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 112–122, 2003
The Output Distribution of Median Type Filters (1984)

The distribution of the output of the one-dimensional median filter is derived for several cases including the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">k</tex> th-order output distribution with any input distribution. This is then used in several illustrative examples of median filtering a signal plus white noise.
Molecular PET imaging for biology-guided adaptive radiotherapy of head and neck cancer (2013)

Integration of molecular imaging PET techniques into therapy selection strategies and radiation treatment planning for head and neck squamous cell carcinoma (HNSCC) can serve several purposes. First, pre-treatment assessments can steer decisions about radiotherapy modifications or combinations with other modalities. Second, biology-based objective functions can be introduced to the radiation treatment planning process by co-registration of molecular imaging with planning computed tomography (CT) scans. Thus, customized heterogeneous dose distributions can be generated with escalated doses to tumor areas where radiotherapy resistance mechanisms are most prevalent. Third, monitoring of temporal and spatial variations in these radiotherapy resistance mechanisms early during the course of treatment can discriminate responders from non-responders. With such information available shortly after the start of treatment, modifications can be implemented or the radiation treatment plan can be adapted tailing the biological response pattern. Currently, these strategies are in various phases of clinical testing, mostly in single-center studies. Further validation in multicenter set-up is needed. Ultimately, this should result in availability for routine clinical practice requiring stable production and accessibility of tracers, reproducibility and standardization of imaging and analysis methods, as well as general availability of knowledge and expertise. Small studies employing adaptive radiotherapy based on functional dynamics and early response mechanisms demonstrate promising results. In this context, we focus this review on the widely used PET tracer (18)F-FDG and PET tracers depicting hypoxia and proliferation; two well-known radiation resistance mechanisms.
Real-Time EMG Driven Lower Limb Actuated Orthosis for Assistance As Needed Movement Strategy (2013)

This paper presents a new approach to control a wearable knee joint exoskeleton driven through the wearer's intention. A realistic bio-inspired musculoskeletal knee joint model is used to control the exoskeleton. This model takes into account changes in muscle length and joint moment arms as well as the dynamics of muscle activation and muscle contraction during lower limb movements. Identification of the model parameters is done through an unconstrained optimization problem formulation. A control law strategy based on the principle of assistance as needed is proposed. This approach guarantees asymptotic stability of the knee joint orthosis and adaptation to human-orthosis interaction. Moreover, the proposed control law is robust with respect to external disturbances. Experimental validations are conducted online on a healthy subject during flexion and extenion of their knee joint. The proposed control strategy has shown satisfactory performances in terms of tracking trajectory and adaptation to human tasks completion.
Self-Assembly of Hollow Cones in a Bola-amphiphile/Hexadiamine Salt Solution (2005)

Cones are a very rare form of supramolecular self-assembly. It is shown that mixing of an unsymmetrical bola-fatty acid and a diamine (catanionic system) in dilute solutions can produce aggregates having a conical shape. These assemblies are made of frozen unsymmetrical monolayers in which bolas are arranged on a regular hexagonal lattice. Cones are stabilized by the introduction of pentagonal or n-gonal defects in the bola-lattice which yields the quantification of the cone apex angle according to the Euler theorems. The formation of cones represents a novel route for lipid and surfactant systems to minimize the edge energy of a flat membrane.
The Potentiality of the Peritoneum as a Dialyzing Membrane (1952)

No AccessJournal of Urology1 Aug 1952The Potentiality of the Peritoneum as a Dialyzing Membrane Robert A. Kelley, and Samuel A. Vest Robert A. KelleyRobert A. Kelley More articles by this author , and Samuel A. VestSamuel A. Vest More articles by this author View All Author Informationhttps://doi.org/10.1016/S0022-5347(17)68234-XAboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail © 1952 by The American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 68Issue 2August 1952Page: 539-545 Advertisement Copyright & Permissions© 1952 by The American Urological Association Education and Research, Inc.MetricsAuthor Information Robert A. Kelley More articles by this author Samuel A. Vest More articles by this author Expand All Advertisement PDF DownloadLoading ...