gebhart/patrepeval huggingface dataset:
ETL queues for active data warehousing (2005)

Traditionally, the refreshment of data warehouses has been performed in an off-line fashion. Active Data Warehousing refers to a new trend where data warehouses are updated as frequently as possible, to accommodate the high demands of users for fresh data. In this paper, we propose a framework for the implementation of active data warehousing, with the following goals: (a) minimal changes in the software configuration of the source, (b) minimal overhead for the source due to the active nature of data propagation, (c) the possibility of smoothly regulating the overall configuration of the environment in a principled way. In our framework, we have implemented ETL activities over queue networks and employ queue theory for the prediction of the performance and the tuning of the operation of the overall refreshment process. Due to the performance overheads incurred, we explore different architectural choices for this task and discuss the issues that arise for each of them.
Resistive Measurements of Structural Effects in Superconducting Niobium (1965)

Resistive measurements of the critical current density Jc in transverse magnetic fields were made on single crystals of niobium, which had been subjected to systematic thermal, mechanical, and chemical treatments in order to produce a wide range of substructural densities, and variations in the oxygen content. The introduction of plastic deformation into niobium crystals produced a peak in Jc at applied magnetic fields of strength Hc2, the upper critical field. The peaks in Jc were removed by annealing the crystals in the recovery range. The critical current density was increased both below and above Hc2 by producing a dislocation substructure in the crystals. Small additions of oxygen also caused Jc to increase above and below Hc2. The upper critical field, however, was relatively insensitive to structure, varying only through the structure sensitivity of the bulk GLAG parameters.
Effect of NaOH and H<sub>2</sub>O<sub>2</sub>on the degradability of straw in ruminants (1988)

Click to increase image sizeClick to decrease image size Additional informationNotes on contributorsF. Sundstol(Head: Prof. Dr. sc. A. Hennig)(Head: Prof. Dr. N. Kolstad)
Lens Arrays and Photography (1991)

Applications of lens arrays to the formation of photographic images are discussed. Examples of “integral” images are given, using microlens arrays manufactured by melting small islands of photoresist. Image formation with reflective arrays is also described, including a novel form of reflective array that introduces a constant angle of deviation, nominally independent of the angle of incidence.
Venturamides A and B:  Antimalarial Constituents of the Panamanian Marine Cyanobacterium <i>Oscillatoria</i> sp. (2007)

Two new modified cyclic hexapeptides, venturamides A (1) and B (2), were isolated from the marine cyanobacterium Oscillatoria sp. by antimalarial bioassay-guided fractionation. The isolation of 1 and 2 represents the first example of the identification of cyanobacterial peptides with selective antimalarial activity. The planar structures of 1 and 2 were determined by 1D and 2D NMR analyses and, in the case of venturamide A (1), comparison with the literature data for a previously reported synthetic compound. The absolute configuration of the amino acid residues was determined by selective hydrolysis in conjunction with Marfey's analysis. Compounds 1 and 2 were tested for biological activity against a range of tropical parasites.
Classification Driven Semantic Based Medical Image Indexing and Retrieval (1999)

The motivation for our work is to develop a truly semantic-based image retrieval system that can discriminate between images differing only through subtle, domain-specific cues, which is a characteristic feature of many medical images. We propose a novel image retrieval framework centered around classification driven search for a good similarity metric (image index features) based on the image semantics rather than on appearance. Given a semantically well-defined image set, we argue that image classification and image retrieval share fundamentally the same goal. Thus, the distance metric defining a classifier which performs well on the data should be expected to behave well when used as the similarity metric for semantic image retrieval. In this paper we shall report our methodology and results on 3D grey-level medical image retrieval. 1 Introduction 1.1 Motivation On-line image data is expanding rapidly in quantity, content and dimension. Many medical Picture Archiving and Communi...
Molecular Characterization of the PhoP-PhoQ Two-Component System in <i>Escherichia coli</i> K-12: Identification of Extracellular Mg <sup>2+</sup> -Responsive Promoters (1999)

We identified Mg2+-responsive promoters of the phoPQ, mgtA, and mgrB genes of Escherichia coli K-12 by S1 nuclease analysis. Expression of these genes was induced by magnesium limitation and depended on PhoP and PhoQ. The transcription start sites were also determined, which allowed us to find a (T/G)GTTTA direct repeat in their corresponding promoter regions.
Discriminative Feature Learning for Video Semantic Segmentation (2014)

In this paper, we propose a novel deep learning based method for video semantic segmentation. Specially, we utilize 3D convolution neural network (3D CNN) to learn discriminative hierarchical features from spatial-temporal volumes for accurate pixel labelling. The learned features are capable of capturing both appearance and motion information. To align the pixel labels along real object boundaries, as well as maintain local consistency, we further perform graph-cut on a graph constructed on coherent 3d regions, or super-voxels, extracted from input video. Experiments demonstrate that due to the discriminative capability of learned features, our approach can obtain competitive labelling accuracy compared to the state-of-art in absence of sophisticated inference models, even with few training samples.
Pull up transistor folding (1990)

A polynomial-time algorithm for the pull up transistor assignment problem is developed, and it is shown that the interval selection and interval selection with pull up transistor assignment problems are NP-hard. Heuristics for these problems are proposed and compared with that proposed by C. Lursinsap and G. Gajski (ibid., vol.7, no.8, p.887-96, 1988).< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Comparative analysis of photovoltaic and thermoelectric panels for powering isolated homes (2009)

A comparative economic analysis between photovoltaic (PV) and thermoelectric (TE) generators used to provide lighting for isolated rural homes is presented. Although panel costs are similar in both cases, appreciable lower generation costs are obtained by TEs. The difference is due to greater availability of the thermal source. In addition, regarding present TE cost reductions, this comparison is much better for TEs. Due to high generation costs, high-efficiency appliances of leading technologies are strongly recommended in all cases.
Speech coding based on a sinusoidal speech model (1994)

It has been shown that speech of high quality can be synthesized using a sinusoidal model when the amplitudes, frequencies, and phases are derived from a high-resolution analysis of the short-time Fourier transform (STFT). It has also been shown that if the measured sine-wave frequencies are replaced by a harmonic set of frequencies in which the fundamental frequency is chosen to make the harmonic model a ‘‘best fit’’ to the measured sine-wave data, then synthetic speech of high quality can also be obtained provided the amplitudes and phases are obtained by sampling the STFT at the harmonic frequencies. A model has also been developed for the sine-wave phases that has a linear component corresponding to the onset time of the glottal pulse, a minimum phase component due to the dispersive characteristics of the vocal tract, and a random component that represents the degree to which the speech segment was unvoiced. While conventional methods are used for coding the pitch and voicing, the sine-waves amplitudes are coded using high-order allpole models. Scalar quantization of the line spectral frequencies offers good performance at rates from 4800–8000 bps, while a multiband vector quantizer results in performance that is quite good at 2400 bps.
Enhancement of delayed-type hypersensitivity to sheep red blood cells in mice by granulocyte colony-stimulating factor administration at the elicitation phase (1996)

We previously demonstrated that selective depletion of polymorphonuclear neutrophils by a mAb inhibits both the priming and effector phases of delayed-type hypersensitivity (DTH) to SRBC. To better understand the role of polymorphonuclear neutrophils in DTH, we examined the effect of granulocyte CSF (G-CSF) on DTH to SRBC in mice. G-CSF administered at the elicitation phase enhanced a DTH response that was weak in control G-CSF-untreated mice. This treatment also augmented mononuclear leukocyte recruitment in DTH in these mice. However, G-CSF administration failed to augment priming of DTH to SRBC under any conditions examined.
Suppression of arthritic bone destruction by adenovirus‐mediated dominant‐negative Ras gene transfer to synoviocytes and osteoclasts (2003)

Ras-mediated signaling pathways are involved in the activation of RA SFCs and the destruction of bone in arthritic joints, suggesting that inhibition of Ras signaling can be a novel approach for RA treatment that targets both synovial cell activation and bone destruction in the RA joint.
Nuclear resonance photon scattering studies of N-2 adsorbed on grafoil and of NaNO2 single crystal (2000)

The nuclear resonance photon scattering (NRPS) from (15)N2 adsorbed on graphite was investigated. The resonantly scattered intensities from the 6324 keV level of (15)N with the photon beam parallel and perpendicular to the adsorbing grafoil planes was measured at 140 K and coverages below 0.7 monolayers (ML), where the (15)N2 occur in the vapor phase. The data were used for deducing the out-of-plane tilt angle of adsorbed N2 relative to the graphite surface and the results were compared with grand canonical Monte Carlo (GCMC) calculations. Using the same method, a single crystal of NaNO2 was studied by measuring the scattering intensities with the nitrite planes aligned parallel and perpendicular to the photon beam. At 80 K, a huge anisotropy (R≈3.6) was observed, caused by the anisotropy in the zero-point motion of the internal modes of vibration of the NO2 ion. The variation of the scattering intensity from a powdered isotopic (15)NaNO2 sample versus T in the range 12 K to 297 K was also measured and explained by accounting for the internal and external vibrational modes in NaNO2.
Control of oxidative phosphorylation by vitamin A illuminates a fundamental role in mitochondrial energy homoeostasis (2009)

The physiology of two metabolites of vitamin A is understood in substantial detail: retinaldehyde functions as the universal chromophore in the vertebrate and invertebrate eye; retinoic acid regulates a set of vertebrate transcription factors, the retinoic acid receptor superfamily. The third member of this retinoid triumvirate is retinol. While functioning as the precursor of retinaldehyde and retinoic acid, a growing body of evidence suggests a far more fundamental role for retinol in signal transduction. Here we show that retinol is essential for the metabolic fitness of mitochondria. When cells were deprived of retinol, respiration and ATP synthesis defaulted to basal levels. They recovered to significantly higher energy output as soon as retinol was restored to physiological concentration, without the need for metabolic conversion to other retinoids. Retinol emerged as an essential cofactor of protein kinase Cdelta (PKCdelta), without which this enzyme failed to be activated in mitochondria. Furthermore, retinol needed to physically bind PKCdelta, because mutation of the retinol binding site rendered PKCdelta unresponsive to Rol, while retaining responsiveness to phorbol ester. The PKCdelta/retinol complex signaled the pyruvate dehydrogenase complex for enhanced flux of pyruvate into the Krebs cycle. The baseline response was reduced in vitamin A-deficient lecithin:retinol acyl transferase-knockout mice, but this was corrected within 3 h by intraperitoneal injection of vitamin A; this suggests that vitamin A is physiologically important. These results illuminate a hitherto unsuspected role of vitamin A in mitochondrial bioenergetics of mammals, acting as a nutritional sensor. As such, retinol is of fundamental importance for energy homeostasis. The data provide a mechanistic explanation to the nearly 100-yr-old question of why vitamin A deficiency causes so many pathologies that are independent of retinoic acid action.
Rapid conversion to high xanthine oxidase activity in viable Kupffer cells during hypoxia. (1994)

It has been widely postulated that the central mechanism of hepatic reperfusion injury involves the conversion, during ischemia, of the enzyme xanthine dehydrogenase (XDH) to its free radical-producing form, xanthine oxidase (XOD). However, this theory has been questioned because (a) XDH to XOD conversion in whole liver occurs very slowly; (b) the cellular distribution of XDH/XOD is unclear; and (c) the direct demonstration of XDH to XOD conversion in viable cells is lacking. In this paper, we address all three issues by measuring XDH to XOD conversion and cell viability in purified populations of hepatic endothelial cells (EC), Kupffer cells (KC), and hepatocytes (HEP). Although XDH/XOD activity on a cellular basis was greater in hepatocytes (0.92 +/- 0.12 mU/10(6) cells) than ECs (0.03 +/- 0.01) or KCs (0.12 +/- 0.04), XDH + XOD specific activity was similar in all three cell types (HEP 1.85 +/- 0.10 U/g protein; EC 1.69 +/- 0.54; KC 2.30 +/- 0.22). Over 150 min of warm (37 degrees C) or 24 h of cold (4 degrees C) hypoxia, percent XOD activity increased slowly in ECs, from 21 +/- 2% (basal) to 39 +/- 3% (warm) and 49 +/- 5% (cold) and in HEPs (29 +/- 2% to 38 +/- 3% and 49 +/- 2%), but converted significantly faster in KCs (28 +/- 3% to 91 +/- 7% and 94 +/- 4%). The dramatic changes in Kupffer cell XOD during cold hypoxia occurred despite only minor changes in cell viability. When hypoxic KCs were reoxygenated after 16 h of cold hypoxia, there was a marked increase in cell death that was significantly blocked by allopurinol. These data suggest that significant conversion to the free radical-producing state occurs within viable KCs, and that Kupffer cell XOD may play an important role in mediating reperfusion injury in the liver.
Computer Systems Organization and Architecture (2000)

From the Publisher:
Computer Systems Organization and Architecture provides up-to-date coverage of fundamental concepts for the design of computers and their subsystems. Professor John Carpinelli presents material in this book in the same way he does in his classroom - by using simple examples to help readers understand concepts without getting bogged down in details. To make the material accessible to all readers, he has included two examples of increasing complexity: the Very Simple CPU which contains four instructions to illustrate very simple CPU design, and the somewhat more complex Relatively Simple CPU that builds upon the same design techniques and introduces some more advanced techniques.
A Generalized Marching Cubes Algorithm Based On Non-Binary Classifications (1997)

We present a new technique for generating surface meshes from a uniform set of discrete samples. Our method extends the well-known marching cubes algorithm used for computing polygonal isosurfaces. While in marching cubes each vertex of a cubic grid cell is binary classified as lying above or below an isosurface, in our approach an arbitrary number of vertex classes can be specified. Consequently the resulting surfaces consist of patches separating volumes of two different classes each. Similar to the marching cubes algorithm all grid cells are traversed and classified according to the number of different vertex classes involved and their arrangement. The solution for each configuration is computed based on a model that assigns probabilities to the vertices and interpolates them. We introduce an automatic method to find a triangulation which approximates the boundary surfaces - implicitly given by our model - in a topological correct way. Look-up tables guarantee a high performance of the algorithm. In medical applications our method can be used to extract surfaces from a 3D segmentation of tomographic images into multiple tissue types. The resulting surfaces are well suited for subsequent volumetric mesh generation, which is needed for simulation as well as visualization tasks. The proposed algorithm provides a robust and unique solution, avoiding ambiguities occuring in other methods. The method is of great significance in modeling and animation too, where it can be used for polygonalization of non-manifold implicit surfaces.
Preparation and characterization of β-cyclodextrin and poly(acrylic acid) microspheres (1998)

A method for the preparation of poly(acrylic acid) (PAA) microspheres crosslinked with beta-cyclodextrin (beta-CD) is described. The method is based on a water-in-oil (w/o) emulsion solvent evaporation technique which facilitates a condensation reaction between PAA and beta-CD. Aqueous solutions of PAA and beta-CD were used as the dispersed phase and food grade olive oil was used as the continuous phase. The effect of homogenization speed (used in the preparation of the emulsion), phase volume ratio and cyclodextrin-polymer load on the particle size of the microspheres produced was investigated in a replicated factorial design. Microspheres were sized by light microscopy. The particle size of the microspheres was influenced by all three variables with two significant first order interactions between the variables being observed (homogenization speed with phase volume ratio and homogenization speed with load). A second order interaction between the three principal factors was also observed. Particle size ranged from 16 to 150 microns, depending on the production variables employed. The yield for the technique was 69.5 +/- 9.5%. Using selected conditions, microspheres of 15-25 microns size were prepared from a range of PAA with different weight average molecular weights (Mw). These particles were then characterized for beta-CD, free carboxylic acid group content and residual oleic acid.
Substituting Citrate for Lactate in Peritoneal Dialysis Fluid Improves Ultrafiltration in Rats (2009)

Substituting citrate for lactate induced a dose-dependent increase in ultrafiltration. Mechanisms probably involve the relation between diffusion and ultrafiltration, leading to increased glucose retention. The increase in ultrafiltration was quantitatively important at a citrate concentration (10 mmol/L) that is compatible with clinical applications of citrate.
Changes in Mite Allergen Levels in Homes using an Acaricide Combined with Cleaning Agents: A 3-Year Follow-Up Study (1992)

Mite-infested furnishings from different houses were treated with an acaricide based on solidified benzyl benzoate combined with cleaning agents. Live mite populations, major mite allergen concentrations and guanine contents of dust collected from these furnishings were compared before and after treatment over a 3-year period. Significant short-term reductions in live mite numbers (95%, p < 0.01) and mite allergen concentrations (50%, p < 0.01) were observed. Mite eradication remained effective following long-term treatment, and allergen reduction reached 75 % at the end of the 3rd year of the study. Measurement of guanine contents showed parallel results. Although these effects varied among the infested sites, long-term mite avoidance can be main tained by repeated treatments (2 per year).
Air-hole collapse and mode transitions in microstructured fiber photonic wires (2005)

We demonstrate robust low-bend loss microstructured fiber photonic wires, which posses a transition from an embedded regime, insensitive to the surroundings, into an evanescent sensing regime, through controlled air-hole collapse.
Characterization and identification of Vagococcus fluvialis strains isolated from domestic animals. (1994)

Strains of Vagococcus fluvialis, a species of Gram-positive catalase-negative cocci, related to the genera Enterococcus and Carnobacterium, were isolated from various lesions of pigs, from lesions and tonsils of cattle and cats and from tonsils of a horse. Most lesion strains were isolated in mixed culture from animals with disease conditions unrelated to coccal infection. Certain differences with the species description of Vagococcus fluvialis were found: only a proportion of the strains was motile; many strains gave positive reactions to Voges-Proskauer, alkaline phosphatase and leucine arylamidase tests or produced acid from galactose and D-tagatose. SDS-PAGE of whole-cell protein patterns, however, confirmed the phenotypic identification. Guidelines for identification of Vagococcus fluvialis are given and an emended description of the species is proposed.
Methylation and demethylation reactions of guanine nucleotide-binding proteins of retinal rod outer segments. (1991)

Retinal transducin was previously shown to be farnesylated on its gamma subunit. This farnesylation reaction on a cysteine residue near the carboxyl terminus is followed by peptidase cleavage at the cysteine. Thus the modified cysteine becomes the carboxyl terminus. It is shown here that the free carboxyl group can be methylated by an S-adenosyl-L-methionine-dependent methyltransferase associated with the rod outer segment membranes. This process can be inhibited by S-adenosyl-L-homocysteine and sinefungin. Moreover, synthetic N-acetyl-S-farnesyl-L-cysteine, but not N-acetyl-L-cysteine, is a substrate for the enzyme. Rapid demethylation of N-acetyl-S-farnesyl-L-cysteine methyl ester can be observed in the membranes. Transducin is also enzymatically demethylated by the rod outer segment membranes. Moreover, the 23- to 29-kDa small G proteins are methylated and demethylated in this system. These data suggest that methylation/demethylation may play a regulatory role in visual signal transduction.
Chemistry of ethenesulfonyl fluoride. Fluorosulfonylethylation of organic compounds (1979)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemistry of ethenesulfonyl fluoride. Fluorosulfonylethylation of organic compoundsJames J. Krutak, Robert D. Burpitt, William H. Moore, and John A. HyattCite this: J. Org. Chem. 1979, 44, 22, 3847–3858Publication Date (Print):October 1, 1979Publication History Published online1 May 2002Published inissue 1 October 1979https://pubs.acs.org/doi/10.1021/jo01336a022https://doi.org/10.1021/jo01336a022research-articleACS PublicationsRequest reuse permissionsArticle Views3130Altmetric-Citations116LEARN 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