gebhart/patrepeval huggingface dataset:
An adaptive learning approach to control contact force in assembly (2002)

Robotic assembly operations can be performed by specifying an exact model of the operation. However, the uncertainties involved during assembly make it difficult to conceive such a model. In these cases, the use of a connectionist model can be advantageous. In this paper the design of a neural network controller (NNC) based on unsupervised learning is presented. The NNC consists of two stages, adaptation and decision. The first stage based on adaptive resonance theory (ART) classifies and recognises all the contact force patterns, whereas the other stage selects the appropriate arm motion direction. Initial results on the implementation of the NNC, using a 6-DOF PUMA robot with a wrist force/torque (F/T) sensor, demonstrate its ability to learn new or novel contact force patterns fast. If previously learned force patterns are encountered these are accessed directly otherwise memory space is allocated to them without forgetting past events, hence creating a stable system.
Ureterosigmoidostomy After Pelvic Irradiation (1977)

The records of 34 patients who underwent ureterosigmoidostomy after pelvic irradiation were reviewed and the incidence of complications was found to be similar to that in other series of ureterosigmoidostomy without prior irradiation. No difference was established between the use of linac or cobalt 60 therapy in relation to postoperative complications. No conclusions could be reached concerning the effect of the preoperative dose of radiotherapy on the operation because of the small number of patients but it did appear that the incidence of postoperative complications was great after doses in excess of 5,000 rads. Ureterosigmoidostomy after pelvic irradiation is considered to be a feasible procedure with doses of less than 5,000 rads.
Amelioration of cognitive deficits in plaque‐bearing <scp>A</scp>lzheimer's disease model mice through selective reduction of nascent soluble A42 without affecting other A pools (2012)

Given that amyloid-β 42 (Aβ42) is believed to be a culprit in Alzheimer's disease (AD), reducing Aβ42 production should be a potential therapeutic approach. γ-Secretase modulators (GSMs) cause selective reduction of Aβ42 or both reduction of Aβ42 and Aβ40 without affecting total Aβ through shifting the γ-cleavage position in amyloid precursor protein. We recently reported on GSM-2, one of the second-generation GSMs, that selectively reduced brain Aβ42 level and significantly ameliorated cognitive deficits in plaque-free 5.5-month-old Tg2576 AD model mice. Here, we investigated the effects of GSM-2 on 10-, 14-, and 18-month-old mice which had age-dependent increase in amyloid plaques. Eight-day treatment with GSM-2 significantly ameliorated cognitive deficits measured by Y-maze task in the mice of any age. However, GSM-2 reduced brain soluble Aβ42 only in 10-month-old mice. In contrast, GSM-2 markedly reduced newly synthesized soluble Aβ42 in both 10- and 18-month-old mice with similar efficacy when measured using the stable isotope-labeling technique, suggesting that nascent Aβ42 plays a more significant role than plaque-associated soluble Aβ42 in the cognitive deterioration of Tg2576 mice. These findings further indicate the potential utility of approach to reducing Aβ42 synthesis in AD therapeutic regimens.
Accurate Models of Energy Harvesting for Smart Environments (2017)

Over the last decade, the energy optimization of resource constrained sensor nodes constitutes a major research topic in smart environments. However, state of the art energy optimization algorithms make strong and unrealistic assumptions of energy models, both in simulations and during the operation of smart systems. For instance, simplistic energy models for energy harvesting leads to inaccurate representation and prediction of the true dynamics of energy. Consequently, systems for smart environments are unable to meet expected performance criteria. In this paper, we propose innovative models to overcome the drawbacks of simplistic energy representations in smart environments. We provide the insights of how to generate precise lightweight energy models. Using the physical properties of solar and flow energy harvesting as case studies, the trade-off between energy harvesting inference and real-time measurement of energy generation is explored. To evaluate our proposed energy models against the simplistic versions, we use real measured data from our environmental micro-climate monitoring deployment in an urban park and a 103% improvement is seen. Additionally, to define the trade-offs between inferred and measured energy generation, experiments are conducted utilizing solar and smart water testbeds.
Cobalt-Catalyzed Preparation of Arylindium Reagents from Aryl and Heteroaryl Bromides (2011)

A cobalt-bathophenanthroline catalyst has been developed for the direct preparation of a variety of arylindium reagents from the corresponding aryl and heteroaryl bromides in the presence of indium metal and lithium chloride. The thus-formed arylindium reagents undergo efficient palladium-catalyzed cross-coupling reactions with aryl iodides, tolerating various functional groups including hydroxy and free amino groups.
The Liverwort Contains a Lectin That Is Structurally and Evolutionary Related to the Monocot Mannose-Binding Lectins (2002)

A mannose (Man)-binding lectin has been isolated and characterized from the thallus of the liverwort Marchantia polymorpha. N-terminal sequencing indicated that the M. polymorpha agglutinin (Marpola) shares sequence similarity with the superfamily of monocot Man-binding lectins. Searches in the databases yielded expressed sequence tags encoding Marpola. Sequence analysis, molecular modeling, and docking experiments revealed striking structural similarities between Marpola and the monocot Man-binding lectins. Activity and specificity studies further indicated that Marpola is a much stronger agglutinin than the Galanthus nivalis agglutinin and exhibits a preference for methylated Man and glucose, which is unprecedented within the family of monocot Man-binding lectins. The discovery of Marpola allows us, for the first time, to corroborate the evolutionary relationship between a lectin from a lower plant and a well-established lectin family from flowering plants. In addition, the identification of Marpola sheds a new light on the molecular evolution of the superfamily of monocot Man-binding lectins. Beside evolutionary considerations, the occurrence of a G. nivalis agglutinin homolog in a lower plant necessitates the rethinking of the physiological role of the whole family of monocot Man-binding lectins.
Antigen and antibody detection and update on the diagnosis of dengue. (1990)

The diagnosis of dengue is an imperfect science. By 1983 we had sensitive isolation systems including arthropods and arthropod cell cultures, specific-and group-reactive monoclonal antibodies, and a rapid and sensitive immunoassay for IgM and IgG. Progress in the past 7 years encompasses the use of monocyte lines for primary isolation, a more rapid plaque reduction neutralization test with BHK-21 cells, labeled RNA probes to detect dengue-specific nucleic acid, and improved ELISA technology with specific synthetic and engineered antigens.
BER Improvement Using a 2-R Regenerator Based on an Asymmetric Nonlinear Optical Loop Mirror. (2004)

BER improvement of 15 decades is observed using an asymmetric NOLM at a bitrate of 40Gbit/s and an input OSNR of 28.7dB. The BER improvement can be converted into 3.9dB of OSNR gain. Both were achieved by optimizing NOLM input power and splitting ratio. This allows for longer spans and thus reduces the over all amount of amplifiers or allows for an increased system reach.
Mode-Locked Diode Lasers for Microwave Optoelectronic Applications (1997)

The paper reviews the recent progress in technology, theory and applications of diode lasers mode locked at microwave frequencies.
CREME: Cis-Regulatory Module Explorer for the human genome (2004)

The binding of transcription factors to specific regulatory sequence elements is a primary mechanism for controlling gene transcription. Eukaryotic genes are often regulated by several transcription factors whose binding sites are tightly clustered and form cis-regulatory modules. In this paper, we present a web server, CREME, for identifying and visualizing cis-regulatory modules in the promoter regions of a given set of potentially co-regulated genes. CREME relies on a database of putative transcription factor binding sites that have been annotated across the human genome using a library of position weight matrices and evolutionary conservation with the mouse and rat genomes. A search algorithm is applied to this data set to identify combinations of transcription factors whose binding sites tend to co-occur in close proximity in the promoter regions of the input gene set. The identified cis-regulatory modules are statistically scored and significant combinations are reported and graphically visualized. Our web server is available at http://creme.dcode.org.
Enzyme immunoassays for picloram detection: A comparison of assay formats (1991)

Two direct enzyme immunoassays for picloram (4‐amino‐3,5,6‐trichloro‐2‐pyridinecarboxylic acid) detection were developed. The assay using IgG isolated from a rabbit antipicloram antiserum had a working range from 5 to 5000 ng ml−1 with a mean I50 value of 180 ng mh−1 and a limit of quantification of 10 ng ml−1. The assay using a monoclonal anti‐picloram antibody had a working range from 1 to 200 ng mh−1 with a mean I50 value of 18 ng mh−1 and a limit of quantification of 5 ng ml−1. The direct assays were compared to an existing monoclonal antibody‐based indirect enzymes immunoassay for accuracy and precision of picloram determinations in fortified ground and surface waters. In both matrices, the monoclonal antibody‐based indirect enzyme immunoassay was shown to be the superior format in terms of greater precision and equal or greater accuracy.
Applications of hardware-based simulation platforms to negative-index material analysis (2006)

Although materials exhibiting negative permeability and permittivity, referred to as metamaterials or left-handed materials (LHMs), have been postulated for many years, it is only recently that such materials have been physically realized. Previous attempts to model these structures embedded a material with a negative index of refraction as a black box and utilized the effective index approximation. While such attempts are sufficient for demonstrating the concepts of negative refraction, they do not utilize physically realizable elements to build LHMs and, hence, cannot account for various spectral and temporal material properties. Thus, in order to determine the frequency range over which such structures exhibit a negative refraction, a rigorous numerical modeling of the LHM is necessary. However, this is a non-trivial task, given the level of detail that is required in the model, which translates into massive computational size and time. Thus, there is a clear need for a numerical platform capable of handling such computationally intense problems. To this end, we have developed a novel, hardware-based platform to analyze LHM structures. This platform has demonstrated performance comparable to a 100-node PC cluster at a fraction of the power, area, and cost. In this paper, we describe this platform and its application to LHM structures. Specifically, the hardware accelerator is used to calculate the transmission spectra of an LHM structure, too large to be modeled using standard software simulation tools, in order to identify the frequency regions where the permittivity and permeability are negative. The hardware platform is then used to demonstrate negative refraction.
SURFACE CHEMICAL PROPERTIES OF SOLIDS COATED WITH A MONOLAYER OF PERFLUORODECANOIC ACID<sup>1</sup> (1952)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSURFACE CHEMICAL PROPERTIES OF SOLIDS COATED WITH A MONOLAYER OF PERFLUORODECANOIC ACID1Fred Schulman and W. A. ZismanCite this: J. Am. Chem. Soc. 1952, 74, 8, 2123–2124Publication Date (Print):April 1, 1952Publication History Published online1 May 2002Published inissue 1 April 1952https://pubs.acs.org/doi/10.1021/ja01128a525https://doi.org/10.1021/ja01128a525research-articleACS PublicationsRequest reuse permissionsArticle Views82Altmetric-Citations10LEARN 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
Effect of an Inert Material’s Thickness and Properties on the Ratio of Energies Imparted by a Detonation’s 1st and 2nd Propulsion Stages (2002)

Analysis of cylinder tests employing aluminum, steel, and copper cylinders of different thickness shows that Gurney Energy measurements have been affected by both the wall thickness and the material’s dynamic properties. Experimental data for these tests and plate‐push tests also show that the ratio of the initial free‐surface velocity (1st propulsion stage) to the final “steady‐state” velocity obtained after the explosive gases have fully expanded (2nd propulsion stage) can differ by a factor of two. The data show a clear dependence of this ratio upon the ratio of the inert material’s thickness to the explosive’s thickness. Phase transitions can also decrease propulsion efficiency by a significant margin.
ChemInform Abstract: THE CHEMISTRY OF ALKYL THIOLSULFINATE ESTERS PART 7, MECHANISTIC STUDIES AND SYNTHETIC APPLICATIONS (1974)

Abstract Die Pyrolyse von Thiolsulfonaten wie (I), (IV) und (VII) führt zu Sulfen‐ und Thiosulfoxylsäuren, die mit Acetylenen wie (II) und (V) zu Sulfoxiden (III) bzw. (VI) oder Thiolsulfonaten wie (VIII) abgefangen werden können.
ChemInform Abstract: Achievement of Crack‐Free BaTiO<sub>3</sub> Films over 1 μm in Thickness via Non‐Repetitive Dip‐Coating. (2000)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Interactive Graphics for Volume Modeling (1981)

This paper describes the GRaphic INput subsystem (GRIN) of an experimental volume modeling system called the Geometric Design Processor (GDP) developed at the IBM Thomas J. Watson Research Center. Sitting at an interactive graphic workstation, a mechanical designer generates computer volume models of complex physical objects and mechanisms built up from primitive volumes, e.g., cuboids, cylinders, swept surfaces, etc., entered at any orientation in 3-dimensional space. Objects are represented in the model as polyhedral approximations. The central issue is the provision of an efficient, natural means for a mechanical designer to enter and interact with these models.
Genetic Control of the Immune Response to Staphylococcal Nuclease (1979)

Abstract The genetic linkage relationship of two antinuclease idiotypes produced by the BALB/c strain was investigated in the backcross (BALB/c × CB.20) × CB.20. These two idiotypes were detected by Lewis rat anti-idiotypic antisera prepared against affinity-purified A/J and SJL antinuclease antibodies, termed the A/J and SJL idiotypes, respectively. Both idiotypes were found to be linked to the IgCHa immunoglobulin heavy chain allotype locus. There was, however, a high frequency of recombination observed between both markers and the IgCHa locus, with eight of 83 backcross animals recombinant for the A/J idiotype and five of 83 recombinant for the SJL idiotype. All such recombinant animals were IgCHb/b homozygotes that had gained one or both idiotypes. These results are consistent with a genetic map of VH region genes in the BALB/c strain in which genes determining the SJL idiotype are closer to the IgCHa allotype locus than are genes determining the A/J idiotype. This high frequency of recombination may indicate that the chromosome segment containing VH region genes is very large or that it has structural features that promote recombination.
Mechanical fatigue resistance of an implantable branched lead system for a distributed set of longitudinal intrafascicular electrodes (2017)

These results demonstrate that the branched lead of this implantable neural interface system has sufficient mechanical fatigue resistance to withstand strain profiles anticipated when the system is implanted in an arm. The novel test setups and paradigms may be useful in testing other lead systems.
Acquisition of human skills for robotic systems (2002)

A method for representing human skills in assembly tasks so that they can be transferred to intelligent robotic systems is proposed. Data from which control strategies of the human operator are extracted are acquired by a direct teaching method. Two levels of control strategies are extracted from the data: one is a high-level sequence of motion with regard to discrete state transitions of the contact state, and the other is compliant motion control strategies, with which the human operator manipulates parts. Based on a priori knowledge of the geometry of parts, the authors first generate a state network representing possible transitions of contact states. The human control data are interpreted with reference to this network and a motion sequence is extracted from the data. The compliant motion control strategy necessary for each state transition is then identified by processing the force and velocity profiles of the acquired data. The identified control strategies in individual steps of the operation are then compiled in order to simplify the representation of the strategies as well as to obtain smooth state transitions.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Discrete 3D Wave Propagation for Computing Morphological Operations from Surface Patches and Unorganized Points (2005)

We present a discrete framework for 3D wave propagation to support morphological computations with an emphasis on the recovery of the medial axis of a 3D solid, a collection of surface patches, or a data set of unorganized points. The wave propagation is implemented on a discrete lattice, where initial surfaces are considered as sources of propagation. Three classes of discrete rays are designed to cover the propagation space with a minimal number of computations. These pencils of rays represent a“compromise” view between Huygens and Fermat principles. The 3D medial axis points are then found at the collision of wavefronts. This method has linear time complexity in the number of nodes of the lattice used to discretize the propagation medium, i.e., it is independent of the topological complexity of the initial data. As such, it is highly efficient for the extraction of symmetries, as well as for implementing 3D morphological filters based on erosions and dilations, from large 3D data sets. The wave propagation scheme permits to implement the effect of various metrics including the Euclidean one.
Polyadenylation of the mRNA of hepatitis delta virus is dependent on the structure of the nascent RNA and regulated by the small or large delta antigen (1994)

During the hepatitis delta virus (HDV) RNA replication, synthesis of either the mRNA for the delta antigen (HDAg) or the full-length antigenomic RNA is determined by selective usage of the potent poly(A) signal on the antigenome. To elucidate the regulatory mechanism, HDV cDNA cotransfection system was used to examine the potential effect of the secondary structure of the nascent RNA and that of the HDAg on HDV polyadenylation in transfected cells. We found that when the nascent RNA species could fold itself to form the rodlike structure, the HDV polyadenylation was suppressed 3 to 5 fold by the HDAg. In addition, we observed that the small and the large HDAg exerted a similar suppressive effect on the HDV polyadenylation, though they played different roles in HDV replication. We concluded that the HDV polyadenylation could be regulated by the structure of the nascent antigenomic RNA and by either the small or large HDAg.
The impact of provider volume on mortality after intracranial tumor resection. (2003)

Warner, David S.; Petrozza, Patricia H.; Cowan, J A Jr; Dimick, J B; Leveque, J-C; Thompson, B G; Upchurch, G R Jr; Hoff, J T Author Information
Optimization of signal‐to‐noise ratio in calculated <i>T</i><sub>1</sub> images derived from two spin‐echo images (1986)

A simplified model relating signal intensity in an MR image to spin-lattice relaxation time (T1), repetition time (TR), number of signal averages and the average tip angle (-alpha) of the protons within the slice has been developed. This model has been used to select the optimal repetition times of two spin-echo images for a fixed total imaging time to maximize signal to noise in calculated T1 images. Theoretical predictions of T1 are virtually identical to spectroscopically measured values, and the relative noise (delta T1) in T1 images calculated from two measured spin-echo images is in good agreement with the theoretically predicted values of delta T1/T1. This model predicts that: (a) for a T1 of approximately 500 ms, the least T1 image noise is obtained with one of the spin-echo images collected with a TR of 400-500 ms. The longer the TR of the other spin-echo image, the lower the T1 image noise, but past a TR of approximately 1400 ms, T1 image signal/noise is optimized for the same total imaging time by increasing the number of averages in the shorter TR spin-echo image rather than increasing the TR of the second spin-echo image. (b) The error is reduced and the optimum TR1 is reduced as -alpha is increased from 63 to 90 degrees. (c) For a range of T1, optimal selection of TR1 and TR2 based on an intermediate value of T1, results in relatively little increase over optimal values in delta T1/T1 for the entire T1 range.