gebhart/patrepeval huggingface dataset:
Dynamic Delegation Based on Temporal Context (2016)

Delegation is a very important part of the administrative process in access control systems; it provides resiliency and flexibility regarding to the management procedure. Delegation is the process of granting a specific authorization from a user to another user of the same system to carry out some functions on his behalf. The delegation, although widely used, is modeled in very little security policies because of its complexity. In this paper we aim to consider the delegation dynamically based on temporal context, to this end we redefine delegation for OrBAC using temporal nonmonotonic description logic. OrBAC is an access control model; it provides the mean to specify contextual authorizations, which facilitates modeling delegation features such as temporary delegation, multiple delegation, revocation, etc. The description logic that we use for the re-formalization process is T- JClassicδɛ. This logic gives the mean to specify nonmonotonic authorizations, and a better representation of the temporal aspects specific to a given delegation. This new representation augments the expressivity of the model and therefore it facilitates even more the representation and the management of the delegation characteristics.
Measurement of Refractive Index of a Transparent Film on a Reflecting Substrate (1959)

(1959). Measurement of Refractive Index of a Transparent Film on a Reflecting Substrate. Optica Acta: International Journal of Optics: Vol. 6, No. 4, pp. 339-343.
Basic Esters and Quaternary Derivatives of β-Hydroxy Acids as Antispasmodics<sup>1</sup> (1952)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBasic Esters and Quaternary Derivatives of β-Hydroxy Acids as Antispasmodics1Gino R. Treves and Frank C. TestaCite this: J. Am. Chem. Soc. 1952, 74, 1, 46–48Publication Date (Print):January 1, 1952Publication History Published online1 May 2002Published inissue 1 January 1952https://pubs.acs.org/doi/10.1021/ja01121a012https://doi.org/10.1021/ja01121a012research-articleACS PublicationsRequest reuse permissionsArticle Views105Altmetric-Citations8LEARN 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
Carbon Nanotube Based Transistors: A Computational Study (2007)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation M. Pourfath, H. Kosina, S. Selberherr; Carbon Nanotube Based Transistors: A Computational Study. AIP Conf. Proc. 10 April 2007; 893 (1): 1041–1042. https://doi.org/10.1063/1.2730253 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
Self-Organization of Nanocrystals in Polymer Brushes. Application in Heterojunction Photovoltaic Diodes (2005)

We present a new approach to achieving order in molecular semiconductors via alignment of polymer chains using surface-initiated polymerization. Polyacrylate brushes grown from transparent conducting electrodes, with triarylamine side groups as hole-transporting components, show characteristics of high mobilities for hole transport. Solution processing a second component with favorable enthalpic interactions can form a composite with mesoscale order and be exploited for heterojunction diodes. We find substantial uptake of CdSe nanocrystals (with diameter in the range 2.5-2.8 nm), and such composites show photovoltaic quantum efficiencies of up to 50%.
Efficiency ehancement of W‐CDMA base‐station envelope tracking power amplifiers via load modulation (2007)

Abstract Load impedance modulation and gate bias control were investigated to improve the performance of W‐CDMA base‐station envelope tracking amplifiers by means of simulations based on the measured data of a 10‐W GaAs FET power amplifier. It is shown that adapting the load impedance along with the drain bias voltage can effectively improve the average efficiency of envelope tracking amplifier. The improvement becomes more apparent in the operating regime of power back‐off. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1954–1957, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22566
Granulocyte Colony-Stimulating Factor Expression from Transduced Vascular Smooth Muscle Cells Provides Sustained Neutrophil Increases in Rats (1996)

Granulocyte colony-stimulating factor (G-CSF) regulates granulocyte precursor cell proliferation, neutrophil survival, and activation. Cyclic hematopoiesis, a disease that occurs both in humans and grey collie dogs is characterized by cyclical variations in blood neutrophils. Although the underlying molecular defect is not known, long-term daily administration of recombinant G-CSF eliminates the severe recurrent neutropenia, indicating that expression of G-CSF by gene therapy would be beneficial. As a prelude to preclinical studies in affected collie dogs, we monitored hematopoiesis in rats receiving vascular smooth muscle cells transduced to express G-CSF. Cells transduced with LrGSN, a retrovirus expressing rat G-CSF, were implanted in the carotid artery and control animals received cells transduced with LASN, a retrovirus expressing human adenosine deaminase (ADA). Test animals showed significant increases in neutrophil counts for at least 7 weeks, with mean values of 3,670 +/- 740 cells/microliter in comparison to 1,870 +/- 460 cells/microliter in controls (p < 0.001). Thus, in rats G-CSF gene transfer targeted at vascular smooth muscle cells initiated sustained production of 1,800 neutrophils/microliter, a cell number that would provide clinical benefit to patients. Lymphocytes, red cells and platelets were not different between control and test animals (p > 0.05). These studies indicate that retrovirally transduced vascular smooth muscle cells can provide sustained clinically useful levels of neutrophils in vivo.
Microfluidic quadrupole and floating concentration gradient (2011)

The concept of fluidic multipoles, in analogy to electrostatics, has long been known as a particular class of solutions of the Navier-Stokes equation in potential flows; however, experimental observations of fluidic multipoles and of their characteristics have not been reported yet. Here we present a two-dimensional microfluidic quadrupole and a theoretical analysis consistent with the experimental observations. The microfluidic quadrupole was formed by simultaneously injecting and aspirating fluids from two pairs of opposing apertures in a narrow gap formed between a microfluidic probe and a substrate. A stagnation point was formed at the centre of the microfluidic quadrupole, and its position could be rapidly adjusted hydrodynamically. Following the injection of a solute through one of the poles, a stationary, tunable, and movable-that is, 'floating'-concentration gradient was formed at the stagnation point. Our results lay the foundation for future combined experimental and theoretical exploration of microfluidic planar multipoles including convective-diffusive phenomena.
Palladium-catalyzed carboannulation of 1,3-dienes by aryl halides (1990)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPalladium-catalyzed carboannulation of 1,3-dienes by aryl halidesRichard C. Larock and Colleen A. FriedCite this: J. Am. Chem. Soc. 1990, 112, 15, 5882–5884Publication Date (Print):July 1, 1990Publication History Published online1 May 2002Published inissue 1 July 1990https://pubs.acs.org/doi/10.1021/ja00171a040https://doi.org/10.1021/ja00171a040research-articleACS PublicationsRequest reuse permissionsArticle Views1046Altmetric-Citations81LEARN 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
Identification and characterization of host cell protein product‐associated impurities in monoclonal antibody bioprocessing (2013)

Downstream processing of monoclonal antibodies (mAbs) has evolved to allow the specific process for a new product to be developed largely by empirical specialization of a platform process that enables removal of impurities of different kinds. A more complete characterization of impurities and the product itself would provide insights into the rational design of efficient downstream processes. This work identifies and characterizes host cell protein (HCP) product-associated impurities, that is, HCP species carried through the downstream processes via direct interactions with the mAb. Interactions between HCPs and mAbs are characterized using cross-interaction chromatography under solution conditions typical of those used in downstream processing. The interacting species are then identified by two-dimensional gel electrophoresis and mass spectrometry. This methodology has been applied to identify product-associated impurities in one particular purification step, namely protein A affinity chromatography, for four therapeutic mAbs as well as the Fab and Fc domains of one of these mAbs. The results show both the differences in HCP-mAb interactions among different mAbs, and the relative importance of product association compared to co-elution in protein A affinity chromatography.
Innovative Design of Crackstop Wall for 14nm Technology Node and Beyond (2018)

Crackstops play an important role in protecting the IC prime from moisture ingress as well as impinging cracks. The introduction of thinner BEoL dielectric layers and ULK materials in advanced CMOS technology resulted in more vulnerable crackstop structures. Through Silicon Via (TSV) technology allows the creation of solid copper monolith walls that lack any seams or weak points associated with the conventional layer by layer construction of traditional die seals or crackstops. It was found in previous work [1] that the solid copper crackstop monolith was a superior structure with nearly two times the likelihood to stop the propagation of impinging cracks. However, laboratory experiments demonstrated that cracks were able to bypass the impenetrable solid copper wall through either the underlying silicon interface or unintended thin oxide interface on the upper section of the monolith wall. To address this issue a series of different crackstop architectures that use through silicon via technology have been proposed. These designs incorporate and leverage different architectural elements in an attempt to force the crack's propagation path into the solid copper wall. To assess the various proposed crackstop design's efficiency at stopping a crack, a series of FEM simulations were performed. Simulations were used to study the possibility of crack propagation in a BEoL/Far BEoL stack at the following interfaces: a) copper/copper or copper/aluminum interface; b) the dielectric surrounding the crackstop; and c) the copper/Si interface. Simulations showed in the case of an added bumper extension that cracks are three times less likely to propagate in the Far BEOL at the Al/Cu interface and two times less likely to propagate at the Cu/Si interface. Simulations also showed that the bumper extension with sacrificial dielectric is very efficient in trapping the cracks. Cracks were two times more probable to propagate away from the Cu/Si interface into the sacrificial dielectric and above it.
Neural Networks for High Performance Time-Delay Estimation and Acoustic Source Localization (2017)

Time-delay estimation is an essential building block of many signal processing applications. This paper follows up on earlier work for acoustic source localization and time delay estimation using pattern recognition techniques in the adverse environment such as reverberant rooms or underwater; it presents unprecedented high performance results obtained with supervised training of neural networks which challenge the state of the art and compares its performance to that of well-known methods such as the Generalized Cross-Correlation or Adaptive Eigenvalue Decomposition.
Trends in DNA forensic analysis (2002)

The paper gives a historical perspective of forensic DNA analysis and overviews existing technologies implemented in forensic laboratories for DNA profiling. Short tandem repeat analysis, mitochondrial DNA and Y-chromosome analysis are described. The review also focuses on emerging new technologies, which represent an interest for the DNA forensic community. Short tandem repeat analysis, by microelectronic chip device, electrophoretic microdevice and matrix assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectrometry are reviewed in this context.
Long-Term Voltage-Sensitive Dye Imaging Reveals Cortical Dynamics in Behaving Monkeys (2002)

A novel method of chronic optical imaging based on new voltage-sensitive dyes (VSDs) was developed to facilitate the explorations of the spatial and temporal patterns underlying higher cognitive functions in the neocortex of behaving monkeys. Using this system, we were able to explore cortical dynamics, with high spatial and temporal resolution, over period of <or=1 yr from the same patch of cortex. The visual cortices of trained macaques were stained one to three times a week, and immediately after each staining session, the monkey started to perform the behavioral task, while the primary and secondary visual areas (V1 and V2) were imaged with a fast optical imaging system. Long-term repeated VSD imaging (VSDI) from the same cortical area did not disrupt the normal cortical architecture as confirmed repeatedly by optical imaging based on intrinsic signals. The spatial patterns of functional maps obtained by VSDI were essentially identical to those obtained from the same patch of cortex by imaging based on intrinsic signals. On comparing the relative amplitudes of the evoked signals and differential map obtained using these two different imaging methodologies, we found that VSDI emphasizes subthreshold activity more than imaging based on intrinsic signals, that emphasized more spiking activity. The latency of the VSD-evoked response in V1 ranged from 46 to 68 ms in the different monkeys. The amplitude of the V2 response was only 20-60% of that in V1. As expected from the anatomy, the retinotopic responses to local visual stimuli spread laterally across the cortical surface at a spreading velocity of 0.15-0.19 m/s over a larger area than that expected by the classical magnification factor, reaching its maximal anisotropic spatial extent within approximately 40 ms. We correlated the observed dynamics of cortical activation patterns with the monkey's saccadic eye movements and found that due to the slow offset of the cortical response relative to its onset, there was a short period of simultaneous activation of two distinct patches of cortex following a saccade to the visual stimulus. We also found that a saccade to a small stimulus was followed by direct transient activation of a cortical region in areas of V1 and V2, located retinotopically within the saccadic trajectory.
Fractionation of Phosphorus in Sludge‐Affected Soils (1983)

Abstract Phosphorus accumulated in sludge‐treated soils was chemically fractionated by a sequential extraction procedure. Samples used for the study were obtained from experimental plots of a sludge land application site, where composted sludges at rates 0, 22.5, 45, and 90 t ha −1 y −1 , and liquid sludges at rates of 0, 3.75, 7.5, and 15 cm/y have been applied for 5 y. There were also experimental plots whose liquid sludge treatments were terminated after 3 y. The experimental field was cropped with winter barley ( Hordeum vulgare ) after the sludge applications. In soils not treated with sludges, the Ca‐bound P accounted for 50–60% of the total P. An accumulation of Al‐ and Fe‐bound P occurred in all sludge‐treated soils. In the top 15 cm of surface soil, after 5 y of composted sludge treatment at a rate of 90 t ha −1 y −1 (1980), the Al‐ and Fe‐bound P was > 60% of the total P. Concentrations of water‐soluble P in sludge‐treated soils also increased. There were indications that the organically bound P in sludge‐treated soils was the most likely form to leach. Three years after the termination of sludge applications, there was little change in the distribution pattern of sludge‐borne P in the soil profile.
Update name of Amblovenatum J.P.Roux genus (Thelypteridaceae) and received new distribution of Amblovetatum terminans in Vietnam (2021)

The genus Amblovenatum J.P. Roux is a small genus in the Thelypteridaceae. Previously, the genus Amblovenatum was named Amphineuron (Holttum, 1971). In 2007, David Middleton argued for the homonyms between the genus Ampineuron (Thelypteridaceae) and the genus Amphineurion (Apocynaceae). By 2009, the name Amblovenatum was used by J.P. Roux to replace the name Amphineuron. The genus Amblovenatum J.P. Roux has outstanding features in fronds, laminae, pinnae, lobes, segments, veinlets, sori, indusia, sporangia. Species of the genus Amblovanatum are distributed from East Africa to Polynesia; India to Northeast Australia; the remainder in Malesia and the Pacific, especially in New Guinea, and has been reported to be distributed in Vietnam. The study added information and explanations on the genus name change and updated the new name of the genus Amblovenatum. Description the morphological characteristics of the genus Amblovenatum, distribution, ecological biology, type; species description Amblovenatum terminans (Hook.) J.P. Roux includes scientific name, Vietnamese name, distribution, ecology, type, examined specimens.
Dual promoter of <i>Agrobacterium tumefaciens</i> mannopine synthase genes is regulated by plant growth hormones (1989)

Temporal and spacial distribution of mannopine synthase (mas) promoter activity was determined throughout the development of transgenic tobacco plants using bacterial luciferase luxA and luxB as reporter genes. Luciferase activity was determined by luminometry in vitro and visualized by computer-enhanced single-photon video imaging in vivo. The activity of the mas dual promoters increased basipetally in developing plants and was wound-inducible in leaf and stem tissue. Hormone bioassays with isolated plant tissues and tumors deficient in the transferred DNA (T-DNA)-encoded genes iaaM, iaaH, and ipt indicated that activity of the mas dual promoters is regulated by auxin and enhanced by cytokinin in both differentiated and tumorous plant cells.
Taxonomy and design analysis for distributed Web caching (2003)

Proxy server caches reduce Internet traffic and improve response times. However, limited duplication among requests restricts most proxy server hit rates to under 50%, requiring other methods to expand cache sharing. The paper proposes a taxonomy for distributed network caching based on discovery, dissemination, and delivery methods. We analyze the match between taxonomy categories and Web characteristics, and use the taxonomy to classify current Web caching projects. Next we describe our cooperative Web caching protocol, in which proxy servers locate cache copies by looking in local metadata directories. Local lookup provides fast discovery, and allows multiple criteria to be used to select a cache site. We propagate metadata by lazy prefetching, in which returned objects carry metadata for related or popular objects. The protocol is simulated using empirically-derived analytical workloads. Results indicate that it substantially reduces server load and connection denials as compared to standard proxy server caching.
Weights Analysis of Space Launch Vehicles in an Advanced Engineering Environment (2004)

In recent years, an Advanced Engineering Environment (AEE) has been developed for integrated multidisciplinary analysis of launch vehicles [1]. It uses the Launch Vehicle Language (LVL) [2] to communicate data between disciplinary analysis tools. An integrated analysis for vehicle sizing and closure uses estimated subsystem weights to drive the Gross Lift-Off Weight (GLOW) of the system [3]. An improved weights estimation tool that uses the LVL for input and output is needed for this multidisciplinary analysis. The primary purpose of the new tool is to enable weights analysis for any Weight Breakdown Structure (WBS) without a change to the tool interface or source code. Typical launch system assessments demonstrate the importance of arbitrary weight structure analysis. Any set of launch architectures might have a unique book-keeping of hardware based on the types of subsystems on the vehicle as well as the preference of the analyst evaluating the vehicle performance. In the past, each variation in vehicle structure demanded a change to tool source code or data transfer interface. The tool described here demonstrates a methodology that readily accommodates weights analysis of disparate vehicles.
Design and analysis of a new permanent magnet brushless DC machine (2000)

A new permanent magnet (PM) brushless DC machine with a unique feature of flux regulation is proposed in this paper. The originality is that the air-gap flux of the machine is generated by both the PM excitation and the specially controlled stator current under the same PM pole. The machine possesses advantageous characteristics of both the PM brushless DC machine and the DC series machine. The rotor configuration and principle of operation are so novel that the magnetic field distribution and performances of the machine are analyzed by use of a time-stepping finite element method. The theoretical calculation is also verified by experimental measurement.