gebhart/patrepeval huggingface dataset:
An improved sequential method for AC/MTDC power system state estimation (2001)

This paper reports the development of a novel and effective approach in AC/MTDC (multi-terminal DC) power system state estimation, called improved sequential method. The proposed approach is sequential in nature in which the MTDC system is solved followed by the AC system. Because the new method decouples the AC and MTDC systems without neglecting the coupling submatrices in the gain matrix, it exhibits good convergence characteristics. The variables and measurement equations of the MTDC system related to the problem formulation are discussed. The effectiveness of the proposed algorithm is demonstrated in this paper with extensive testing in several test systems and the results are compared with other state estimators. The main advantage of the method is that the proposed algorithm ran be used to easily adapt existing state estimation algorithm to cater for MTDC.
Fault-tolerance for communicating multidatabase transactions (1994)

We propose a framework that can be used for the implementation of reliable multidatabase system communication protocols. The framework provides transactions on shared write-once objects, termed communication objects, that can be recovered after failures. Also concurrency is supported by recoverable processes. The realization of this framework that can be provided by means of a distributed coordination kernel, is focused upon. Strategies for communication objects that belong to different reliability classes are presented. The application of this framework for MDBS transaction processing is shown and the failure behavior of a MDBS communication protocol supporting global serializability through a global two-phase-commit is discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Addition of bromotrichloromethane to .alpha.,.beta.-unsaturated ketones. Nuclear magnetic resonance study of the addition products (1970)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAddition of bromotrichloromethane to .alpha.,.beta.-unsaturated ketones. Nuclear magnetic resonance study of the addition productsSoon Ng and S. H. OngCite this: J. Org. Chem. 1970, 35, 2, 354–355Publication Date (Print):February 1, 1970Publication History Published online1 May 2002Published inissue 1 February 1970https://pubs.acs.org/doi/10.1021/jo00827a014https://doi.org/10.1021/jo00827a014research-articleACS PublicationsRequest reuse permissionsArticle Views66Altmetric-Citations4LEARN 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
The SK3/K<sub>Ca</sub>2.3 potassium channel is a new cellular target for edelfosine (2010)

Our data clearly establish edelfosine as an inhibitor of cancer cell migration by acting on SK3/K(Ca)2.3 channels and provide insights into the future development of a new class of migration-targeted, anti-cancer agents.
Copper(I)-catalyzed reactions of .beta.,.gamma.-epoxy alcohols with Grignard reagents (1983)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCopper(I)-catalyzed reactions of .beta.,.gamma.-epoxy alcohols with Grignard reagentsMarcus A. Tius and Abdul H. FauqCite this: J. Org. Chem. 1983, 48, 22, 4131–4132Publication Date (Print):November 1, 1983Publication History Published online1 May 2002Published inissue 1 November 1983https://pubs.acs.org/doi/10.1021/jo00170a058https://doi.org/10.1021/jo00170a058research-articleACS PublicationsRequest reuse permissionsArticle Views945Altmetric-Citations65LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Tactile sensation imaging system for inclusion characterization (2011)

Characterizing and locating sub-surface tumors will greatly enhance the detection and treatment of breast cancer. In this paper, a novel tactile sensation imaging system, that is capable of detecting and characterizing the subsurface object, was designed, implemented, and tested. A multi-layer Polydimethylsiloxane optical waveguide has been fabricated as the sensing probe. The light was illuminated below the acceptance angle to totally reflect within the flexible and transparent waveguide. When a waveguide is compressed by an external force, the contact area of the waveguide deforms and causes the light to scatter. The scattered light is captured by a high resolution camera and saved as an image. Using the salient features of the captured image, we estimated inclusion characteristics such as size, depth, and Young's modulus. To test the performance of the proposed system, we use a realistic tissue phantom with embedded stiff inclusions. The experimental results showed that the proposed system can detect inclusions and provide the relative values of inclusion's mechanical properties. Using these relative values, we can discern malignant and benign tumors.
Isochroman-6-carboxamides as Highly Selective 5-HT<sub>1D</sub> Agonists:  Potential New Treatment for Migraine without Cardiovascular Side Effects (1998)

ADVERTISEMENT RETURN TO ISSUEPREVLetterNEXTIsochroman-6-carboxamides as Highly Selective 5-HT1D Agonists: Potential New Treatment for Migraine without Cardiovascular Side EffectsMichael D. Ennis, Nabil B. Ghazal, Robert L. Hoffman, Martin W. Smith, Siusaidh K. Schlachter, Charles F. Lawson, Wha Bin Im, Jeffrey F. Pregenzer, Kjell A. Svensson, Richard A. Lewis, Edward D. Hall, Dorothy M. Sutter, Lorri T. Harris, and Robert B. McCallView Author Information Pharmacia & Upjohn, Inc., Kalamazoo, Michigan 49001 Cite this: J. Med. Chem. 1998, 41, 13, 2180–2183Publication Date (Web):June 3, 1998Publication History Received4 March 1998Published online3 June 1998Published inissue 1 June 1998https://pubs.acs.org/doi/10.1021/jm980137ohttps://doi.org/10.1021/jm980137orapid-communicationACS PublicationsCopyright © 1998 American Chemical SocietyRequest reuse permissionsArticle Views781Altmetric-Citations65LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Agonists,Amides,Amines,Molecular structure,Receptors Get e-Alerts
Isoflurane hyperpolarizes neurones in rat and human cerebral cortex (1987)

The effect of the anaesthetic gas isoflurane was studied by intracellular recordings in neurones from rat hippocampal cortex and neurones from human neocortex in vitro. Anaesthetic concentrations of isoflurane abolished spontaneous activity and reduced synaptically evoked activity without rendering individual cells inexcitable or preventing evoked synaptic activity to increased afferent input. Induced epileptiform activity was not observed. Isoflurane reversibly hyperpolarized the cell membrane in a dose-dependent manner, isoflurane 1.5, 3 and 5% causing 4 +/- 1, 6 +/- 2 and 8 +/- 2 mV (mean +/- SD) hyperpolarization, respectively. The hyperpolarization was accompanied by a reduction in the input resistance, 18 +/- 3% for 3% isoflurane. The effects remained unchanged after synaptic transmission was blocked. Five experiments with intracellular recordings from human cortical neurones in vitro showed identical results.
The behavior of water in XLPE and EPR cables and its influence on the electric characteristics of insulation (1999)

This paper presents the latest results of continuous investigations of cable insulations degradation of crosslinked polyethylene (XPLE) and ethylene-propylene with rubber based formulation (EPR) when subjected to electric stress and heating in the presence of water or water vapour. The paper deals with water absorption and diffusion in two kinds of crosslinked polyethylene insulation-dry-cured and steam-cured, and steam-cured EPR insulation. The aim of this investigation is to present the results of the influence of changing of water or water vapour pressure in the conductors of XLPE and EPR cables in different service conditions on the electric characteristics of XLPE and EPR insulations-breakdown voltage (AC BDV), dissipation factor (tan /spl delta/) and rata of partial discharge (RPD). In this paper, RPD is defined as, the maximum electrical field when the beginning partial discharge in the cable insulation and partial discharge were measured in accordance with the IEC standard. This paper also shows the relation between AC BDV and water content, and AC BDV and tan /spl delta/ in XLPE and EPR insulations. In this testing the tap water was put in the cable conductors and the ends were properly closed by terminal boxes. The results indicate that the combined effects of water or water vapour, pressure, moisture, electric field and temperature will greatly accelerate deterioration of XLPE and EPR insulations.
Toxic Metals and Oxidative Stress Part I: Mechanisms Involved in Me-tal induced Oxidative Damage (2001)

Toxic metals (lead, cadmium, mercury and arsenic) are widely found in our environment. Humans are exposed to these metals from numerous sources, including contaminated air, water, soil and food. Recent studies indicate that transition metals act as catalysts in the oxidative reactions of biological macromolecules therefore the toxicities associated with these metals might be due to oxidative tissue damage. Redox-active metals, such as iron, copper and chromium, undergo redox cycling whereas redox-inactive metals, such as lead, cadmium, mercury and others deplete cells' major antioxidants, particularly thiol-containing antioxidants and enzymes. Either redox-active or redox-inactive metals may cause an increase in production of reactive oxygen species (ROS) such as hydroxyl radical (HO.), superoxide radical (O2.-) or hydrogen peroxide (H2O2). Enhanced generation of ROS can overwhelm cells' intrinsic antioxidant defenses, and result in a condition known as "oxidative stress". Cells under oxidative stress display various dysfunctions due to lesions caused by ROS to lipids, proteins and DNA. Consequently, it is suggested that metal-induced oxidative stress in cells can be partially responsible for the toxic effects of heavy metals. Several studies are underway to determine the effect of antioxidant supplementation following heavy metal exposure. Data suggest that antioxidants may play an important role in abating some hazards of heavy metals. In order to prove the importance of using antioxidants in heavy metal poisoning, pertinent biochemical mechanisms for metal-induced oxidative stress should be reviewed.
The BBXB Motif of RANTES Is the Principal Site for Heparin Binding and Controls Receptor Selectivity (2001)

The chemokine RANTES (regulated on activation normal T cell expressed and secreted; CCL5) binds selectively to glycosaminoglycans (GAGs) such as heparin, chondroitin sulfate, and dermatan sulfate. The primary sequence of RANTES contains two clusters of basic residues, (44)RKNR(47) and (55)KKWVR(59). The first is a BBXB motif common in heparin-binding proteins, and the second is located in the loop directly preceding the C-terminal helix. We have mutated these residues to alanine, both as point mutations as well as triple mutations of the 40s and 50s clusters. Using a binding assay to heparin beads with radiolabeled proteins, the (44)AANA(47) mutant demonstrated an 80% reduction in its capacity to bind heparin, whereas the (55)AAWVA(59) mutant retained full binding capacity. Mutation of the (44)RKNR(47) site reduced the selectivity of RANTES binding to different GAGs. The mutants were tested for their integrity by receptor binding assays on CCR1 and CCR5 as well as their ability to induce chemotaxis in vitro. In all assays the single point mutations and the triple 50s cluster mutation caused no significant difference in activity compared with the wild type sequence. However, the triple 40s mutant showed a 80-fold reduction in affinity for CCR1, despite normal binding to CCR5. It was only able to induce monocyte chemotaxis at micromolar concentrations. The triple 40s mutant was also able to inhibit HIV-1 infectivity, but consistent with its abrogated GAG binding capacity, it no longer induced enhanced infectivity at high concentrations.
Dynamic Colour Possibilities and Functional Properties of Thermochromic Printing Inks (2012)

Thermochromic printing inks change their colour regarding the change in temperature and they are one of the major groups of colour-changing inks. One of the most frequently used thermochromic material in printing inks are leuco dyes. The colour of thermochromic prints is dynamic, it is not just temperature-dependent, but it also depends on thermal history. The effect is described by colour hysteresis. This paper aims at discussing general aspects of thermochromic inks, dynamic colorimetric properties of leuco dye-based thermochromic inks, their stability and principle of variable-temperature colour measurement. Thermochromic material is protected in round-shaped capsules. They are much larger than pigments in conventional inks. The polymer envelopes of pigment capsules are more stable against oxidation than the binder. If these envelopes are damaged, the dynamic colour is irreversibly lost. Our aim is to analyse the colorimetric properties of several reversible screen-printed UV-curing leuco dye thermochromic inks with different activation temperatures printed on paper. A small analysis of irreversible thermochromic inks will be presented for comparison with reversible thermochromic inks. Moreover, so as to show interesting possibilities, a combination of different inks was made, an irreversible thermochromic ink was printed on top of the red and blue reversible thermochromic inks. Special attention was given to the characterization of colour hysteresis and the meaning of activation temperature. <br />
Attack and Countermeasure on Interlock-Based Device Pairing Schemes (2017)

In recent years, researchers have proposed several secure device pairing schemes that allow mobile devices in close proximity to establish a trusted communication channel between them without sharing any secret in advance. These schemes use the correlation of some physical measurements (magnetic field, acceleration, etc.,) made independently by the two pairing devices to reconcile them. Their security against a Man-in-the-Middle (MitM) attacker relies on the difficulty for the MitM attacker to obtain a measurement data similar to the two pairing devices. As a key step in the reconciliation process, an interlock protocol is used in several recent schemes (e.g., Magpairing and ShaVe) to ensure that the measurement data is not leaked. However, the present paper points out that these schemes apply the interlock protocol improperly, making themselves vulnerable to MitM attacks. The analysis and experimental results show that the proposed MitM attack almost surely succeeds with very low computation overhead. We also propose countermeasures on the presented attack.
Command Control for Many-Robot Systems (1992)

Rapidly evolving sensor, effector and processing technologies, including micromechanical fabrication techniques, will soon make possible the development of very inexpensive autonomous mobile devices with adequate processing but fairly limited sensor capabilities. One goal which has been proposed is to employ large numbers (more than 100) of these simple robots to achieve real-world military mission goals in the ground, air, and underwater environments, using sensor-based reactive planners to realize desired emergent collective group behaviors. One key prerequisite to realizing this goal is the capability to command and control the system of robots in terms of meaningful mission-oriented system-level parameters. A commander requires an understanding of a system's capabilities, doctrine for employing it, and measures of effectiveness to assess its performance once deployed. It is thus necessary to relate system (ensemble) functionality and performance to the behaviors realized by the individual autonomous elements. This paper describes a program of analysis, modeling, algorithm development, and simulation which has been undertaken to develop, refine, and validate this basic approach to real-world problem solving. The initial thrust has been to develop generic behaviors, such as blanket, barrier, and sweep coverage, and various deployment and recovery modes, which can address a broad spectrum of generic applications such as mine deployment, minesweeping, surveillance, sentry duty, maintenance inspection, ship hull cleaning, and communications relaying. Initial simulation results are presented. 1.0 INTRODUCTION The critical sensor, effector, and processing technologies that are prerequisite to the development of the military mobile robots of the 21st century are evolving rapidly. Moreover, while major thrusts in the development of military mobile robots have been undertaken in the areas of Unmanned Ground Vehicles (UGVs), Unmanned Air Vehicles (UAVs), and Unmanned Underwater Vehicles (UUVs), continuing developments in solid-state sensor and effector technologies suggest that unexploited opportunities exist at the lower end of the spectrum of robotic vehicle functionality and performance [1, 2]. In fact, the emerging field of micromachines (also termed microdynamics, mechatronics, or microelectromechanical systems) was selected
A hybrid transformation with a filter for advanced video coding (2008)

H.264/AVC is the most recent video coding standard developed by the ITU-T Video Coding Experts Group and the ISO/IEC Moving Picture Experts Group. The main goal of the H.264/AVC standard has been to provide enhanced compression performance and provision for network friendly video representation addressing conversational and non-conversational applications. This paper mainly concentrates on two modules of the existing advanced video coding standard. The H.264 in-loop deblocking filter is one of the several complex techniques that have realized this superior coding quality. The deblocking filter is a computationally and data intensive tool resulting in increased execution time of both the encoding and decoding processes. The existing filter of the H.264 video codec is not capable of smoothing the video thereby creating an unacceptable blurring phenomenon. In this paper, a new deblocking filter has been used to overcome this drawback. It has a non-linear operator that is able to effectively attenuate the noise that corrupts the quality of the video. The existing system uses Discrete Cosine Transformation which is proved to have several drawbacks. Hence a hybridization method has been incorporated in transformation module of video encoder. This paper presents an hybridization in the transformation module by incorporating DCT as transformation technique for inter frames and a combination of wavelet filters for intra frames of video sequence. This proposal is also applied in the recent H.264/AVC standard and is proved to have better results.
Code and parse trees for lossless source encoding (2002)

This paper surveys the theoretical literature on fixed-to-variable-length lossless source code trees, called code trees, and on variable-length-to-fixed lossless source code trees, called parse trees. In particular, the following code tree topics are outlined in this survey: characteristics of the Huffman (1952) code tree; Huffman-type coding for infinite source alphabets and universal coding; the Huffman problem subject to a lexicographic constraint, or the Hu-Tucker (1982) problem; the Huffman problem subject to maximum codeword length constraints; code trees which minimize other functions besides average codeword length; coding for unequal cost code symbols, or the Karp problem, and finite state channels; and variants of Huffman coding in which the assignment of 0s and 1s within codewords is significant such as bidirectionality and synchronization. The literature on parse tree topics is less extensive. Treated here are: variants of Tunstall (1968) parsing; dualities between parsing and coding; dual tree coding in which parsing and coding are combined to yield variable-length-to-variable-length codes; and parsing and random number generation. Finally, questions related to counting and representing code and parse trees are also discussed.