gebhart/patrepeval huggingface dataset:
Texture feature extraction using co-occurrence matrices of sub-band image for batik image classification (2014)

In this study, we propose a new method to extract texture features of batik images. The proposed method is called co-occurrence matrices of sub-band images. This method is proposed to overcome the problem in classifying batik images that are acquired randomly from the internet. The problem of those images is the batik images contain various types of noise, such as unbalanced brightness, there are folds on fabrics images, the different size of basic motifs, low contrast, and there is watermark on the images. This method combines the advantages of gray-level co-occurrence matrices (GLCM) and discrete wavelet transform (DWT). First, the original image is decomposed using DWT to provide sub-band images. Second, GLCM is applied to sub-band images to extract the texture features. Those features will become the input for the probabilistic neural network (PNN). The results show that this method is robust enough to classify batik images. The maximum accuracy that can be achieved is 72%.
Reduced dimensionality in triple-resonance NMR experiments (1993)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReduced dimensionality in triple-resonance NMR experimentsT. Szyperski, G. Wider, J. H. Bushweller, and K. WuethrichCite this: J. Am. Chem. Soc. 1993, 115, 20, 9307–9308Publication Date (Print):October 1, 1993Publication History Published online1 May 2002Published inissue 1 October 1993https://pubs.acs.org/doi/10.1021/ja00073a064https://doi.org/10.1021/ja00073a064research-articleACS PublicationsRequest reuse permissionsArticle Views233Altmetric-Citations143LEARN 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 (2)»Supporting Information Supporting Information Get e-Alerts
Reliability of flip chip on board. First order model for the effect on contact integrity of moisture penetration in the underfill (2002)

In evaluating the reliability of flip chip on board with solder bumps, only a little is known about moisture-induced failure mechanisms at interconnection level. In order to accommodate the difference in coefficient of thermal expansion of the silicon die and the printed board in a flip chip geometry, an epoxy underfill is commonly applied. This underfill increases the resistance to cyclic temperature loads, but the material is susceptible to moisture ingress. Failure analysis of flip chips from an 85/spl deg/C/85%RH test has shown that swelling of the underfill caused by moisture take up and the resulting hygro-stress is a major driving force for failures at interconnection level. To capture this failure mechanism, a new first order, one dimensional diffusion model for moisture is used. Moisture absorption properties of underfills are experimentally determined by gravimetric vapour sorption experiments at 85/spl deg/C/85%RH. The temperature dependencies of these properties are estimated based on data of similar epoxy moulding compounds. Taking a critical hygro-stress level as failure criterion, an analytical transform is proposed, and an acceleration factor defined. A design rule for accelerated humidity testing is formulated. The acceleration transform is used to plot iso failure-free time diagrams for two flip chip underfills. These diagrams enable predicting of a failure-free time during service life under a variety of temperature and humidity conditions.
Population-based metagenomics analysis reveals markers for gut microbiome composition and diversity (2016)

Deep sequencing of the gut microbiomes of 1135 participants from a Dutch population-based cohort shows relations between the microbiome and 126 exogenous and intrinsic host factors, including 31 intrinsic factors, 12 diseases, 19 drug groups, 4 smoking categories, and 60 dietary factors. These factors collectively explain 18.7% of the variation seen in the interindividual distance of microbial composition. We could associate 110 factors to 125 species and observed that fecal chromogranin A (CgA), a protein secreted by enteroendocrine cells, was exclusively associated with 61 microbial species whose abundance collectively accounted for 53% of microbial composition. Low CgA concentrations were seen in individuals with a more diverse microbiome. These results are an important step toward a better understanding of environment-diet-microbe-host interactions.
Control of temperature profile for a spray deposition process (2003)

Spray forming is a novel method of rapidly manufacturing tools and dies for stamping and injection operations. The process sprays molten tool steel from a set of arc spray guns onto a ceramic former to build up a thick steel shell. The volumetric contraction that occurs as the steel cools is offset by a volumetric expansion taking place within the sprayed steel, which allows the dimensional accurate tools to be produced. To ensure that the required phase transformation takes place, the temperature of the steel is regulated during spraying. The sprayed metal acts both as a source of mass and a source of heat and by adjusting the rate at which metal is sprayed, the surface temperature profile over the surface of the steel shell can be controlled. The temperature profile is measured using a thermal imaging camera and regulated by adjusting the rate at which the guns spray the steel. Because the temperature is regulated by adjusting the feed rate to an actuator that is moving over the surface, this is an example of mobile control, which is a class of distributed parameter control. The paper describes the design of a time-varying H/sub 2/ controller for the process and presents results from the implementation of the controller on the spray forming process.
A Modified Gauss‐Newton Method for Aquifer Parameter Identification (1995)

Abstract The accuracy of parameter estimation procedures is evaluated for a modified Gauss‐Newton method applied to transient ground‐water flow. Three different approaches of evaluating the sensitivity coefficient matrix are examined, including influence coefficient, sensitivity equation , and variational approaches . The performance of each of the techniques is evaluated by applying a common synthetic data set. The latter two techniques are shown to perform with least sensitivity to starting parameters and extraneous sampling noise. Where either random or systematic noise is added to the time‐series data set, the resulting predictions become increasingly more sensitive to the form of the starting transmissivity vector. It is concluded that the modified Gauss‐Newton method is attractive because of its simplicity, high rate of convergence, and modest computational demands, especially when the number of the parameters to be identified is not large.
Adenovirus E4-dependent activation of the early E2 promoter is insufficient to promote the early-to-late-phase transition (1991)

The adenovirus E4 ORF6/7 protein has been shown to activate the cellular transcription factor E2F. E2F activation leads to activation of the adenovirus early E2 promoter which controls the production of viral DNA replication proteins. In the present study an adenovirus type 5 cDNA mutant, H5ilE4L, was constructed. This mutant is capable of making the ORF6/7 polypeptide but lacks the coding sequences for all other E4 products. H5ilE4L trans activates the early E2 promoter to wild-type levels, but still it is defective for viral DNA replication. A mutant expressing ORF6 in addition to ORF6/7, H5ilE4I, is normal for viral DNA replication. This indicates that activation of the early E2 promoter is insufficient to promote efficient viral DNA replication and that another E4-encoded function is necessary. The ORF6 protein seems to provide this function. We suggest that ORF6/7-induced activation of E2F is not necessary for adenovirus growth in HeLa cells. Rather, this activation might be of importance in the normal, growth-arrested host cell, since E2F has been shown to bind to the promoter regions of a number of immediate-early genes involved in regulation of cell proliferation (M. Mudryj, S. W. Hiebert, and J. R. Nevins, EMBO J. 9:2179-2184, 1990).
Observación Participante: el registro (2009)

Finalizamos en este número el desarrollo de la observación participante abordando lo relativo al registro de los datos: cómo se debe realizar el registro, recomendaciones para facilitar la memorización de la información recabada y algunos consejos para elaborar dichos registros son parte del contenido de este capítulo. Centro de Trabajo: Departamento Investigación FUDEN. Fecha del Trabajo: 30/10/2009
GATA factor mutations in hematologic disease (2017)

GATA family proteins play essential roles in development of many cell types, including hematopoietic, cardiac, and endodermal lineages. The first three factors, GATAs 1, 2, and 3, are essential for normal hematopoiesis, and their mutations are responsible for a variety of blood disorders. Acquired and inherited <i>GATA1</i> mutations contribute to Diamond-Blackfan anemia, acute megakaryoblastic leukemia, transient myeloproliferative disorder, and a group of related congenital dyserythropoietic anemias with thrombocytopenia. Conversely, germ line mutations in <i>GATA2</i> are associated with GATA2 deficiency syndrome, whereas acquired mutations are seen in myelodysplastic syndrome, acute myeloid leukemia, and in blast crisis transformation of chronic myeloid leukemia. The fact that mutations in these genes are commonly seen in blood disorders underscores their critical roles and highlights the need to develop targeted therapies for transcription factors. This review focuses on hematopoietic disorders that are associated with mutations in two prominent GATA family members, <i>GATA1</i> and <i>GATA2</i>.
Enzymatic kinetic resolution of primary allenic alcohols. Application to the total synthesis and stereochemical assignment of striatisporolide A (2009)

Crude Porcine pancreatic lipase was successfully used for the kinetic resolution of axially chiral primary allenic alcohols providing very high enantioselectivities with E values above 200. This simple access to optically active allenes was applied to the total synthesis of the fungal metabolite (-)-striatisporolide A, allowing its unambiguous stereochemical assignment.
Synthesis and Antioxidant Properties of Novel Memantine Derivatives (2017)

Our outcomes showed that compounds 1 and 5 (at the concentration of 10 μM), containing as antioxidant portion residues of N-acetyl-Cys-OH and N-acetyl-Cys(Allyl)-OH, respectively, revealed a significant neuroprotective activity against oxidative stress, as assessed by NBT assays.
Detection limits in photothermal microscopy (2010)

We show how to push the detection limits in photothermal microscopy towards weaker single absorbers, by a systematic optimization of signal and noise sources. In particular, we (i) maximize the power of the probe laser beam, (ii) select optimal optical and thermal properties for the medium embedding the absorber, and (iii) thermally isolate the absorber from the glass substrate. These different experimental conditions are optimized in turn with single immobilized gold nanoparticles. We demonstrate the detection of a dissipated power of 3 nW with a signal-to-noise ratio of 8, and an integration time of 10 ms. This corresponds to a less than 0.1 K surface temperature rise for a 20 nm-diameter gold nanosphere (0.4 K for 5 nm). As an example of the achieved detection sensitivity, we show simultaneous photothermal and fluorescence detection of individual 20 nm fluorescent beads, each containing about 20 Nile red dye molecules.
Analysis of Poly-β-Hydroxybutyrate in <i>Rhizobium japonicum</i> Bacteroids by Ion-Exclusion High-Pressure Liquid Chromatography and UV Detection (1983)

Ion-exclusion high-pressure liquid chromatography (HPLC) was used to measure poly-beta-hydroxybutyrate (PHB) in Rhizobium japonicum bacteroids. The products in the acid digest of PHB-containing material were fractionated by HPLC on Aminex HPX-87H ion-exclusion resin for organic acid analysis. Crotonic acid formed from PHB during acid digestion was detected by its intense absorbance at 210 nm. The Aminex-HPLC method provides a rapid and simple chromatographic technique for routine analysis of organic acids. Results of PHB analysis by Aminex-HPLC were confirmed by gas chromatography and spectrophotometric analysis.
Non-invasive Spatial Mapping of Frequencies in Atrial Fibrillation: Correlation With Contact Mapping (2021)

<b>Introduction:</b> Regional differences in activation rates may contribute to the electrical substrates that maintain atrial fibrillation (AF), and estimating them non-invasively may help guide ablation or select anti-arrhythmic medications. We tested whether non-invasive assessment of regional AF rate accurately represents intracardiac recordings. <b>Methods</b>: In 47 patients with AF (27 persistent, age 63 ± 13 years) we performed 57-lead non-invasive Electrocardiographic Imaging (ECGI) in AF, simultaneously with 64-pole intracardiac signals of both atria. ECGI was reconstructed by Tikhonov regularization. We constructed personalized 3D AF rate distribution maps by Dominant Frequency (DF) analysis from intracardiac and non-invasive recordings. <b>Results:</b> Raw intracardiac and non-invasive DF differed substantially, by 0.54 Hz [0.13 - 1.37] across bi-atrial regions (<i>R</i> <sup>2</sup> = 0.11). Filtering by high spectral organization reduced this difference to 0.10 Hz (cycle length difference of 1 - 11 ms) [0.03 - 0.42] for patient-level comparisons (<i>R</i> <sup>2</sup> = 0.62), and 0.19 Hz [0.03 - 0.59] and 0.20 Hz [0.04 - 0.61] for median and highest DF, respectively. Non-invasive and highest DF predicted acute ablation success (<i>p</i> = 0.04). <b>Conclusion:</b> Non-invasive estimation of atrial activation rates is feasible and, when filtered by high spectral organization, provide a moderate estimate of intracardiac recording rates in AF. Non-invasive technology could be an effective tool to identify patients who may respond to AF ablation for personalized therapy.
Nitrogen in chromium–manganese stainless steels: a review on the evaluation of stacking fault energy by computational thermodynamics (2013)

Nitrogen in austenitic stainless steels and its effect on the stacking fault energy (SFE) has been the subject of intense discussions in the literature. Until today, no generally accepted method for the SFE calculation exists that can be applied to a wide range of chemical compositions in these systems. Besides different types of models that are used from first-principle to thermodynamics-based approaches, one main reason is the general lack of experimentally measured SFE values for these steels. Moreover, in the respective studies, not only different alloying systems but also different domains of nitrogen contents were analyzed resulting in contrary conclusions on the effect of nitrogen on the SFE. This work gives a review on the current state of SFE calculation by computational thermodynamics for the Fe-Cr-Mn-N system. An assessment of the thermodynamic effective Gibbs free energy, [Formula: see text], model for the [Formula: see text] phase transformation considering existing data from different literature and commercial databases is given. Furthermore, we introduce the application of a non-constant composition-dependent interfacial energy, б <sup><i>γ</i>/<i>ε</i></sup> , required to consider the effect of nitrogen on SFE in these systems.
Efficient implementation of event sets in Time Warp (1993)

The implementation of the pending event set (PES) is crucial to the execution speed of discrete event simulation programs. This paper studies the implementation of the PES in the context of simulations executing on parallel computers using the Time Warp mechanism. We present a scheme for implementing Time Warsp's PES based on well-known data structures for priority queues. This scheme supports efficient management of future and past events, especially for rollback and fossil collection operations. A comparative study of several queue implementations is presented. Experiments with a Time Warp system executing on a Kendall Square Research multiprocessor (KSR1) demonstrate that the implementation of the input queue can have a dramatic impact on performance, as large as an order of magnitude, that is much greater than what can be accounted for by simply the reduced execution time to access the data structure. In particular, it is demonstrated that an efficient input queue implementation can also significantly reduce the number of rollbacks, and the efficiency of memory management policies such as Jefferson's cancelback protocol. In the context of this work we also present an improved version of the skew heap that allows dequeueing of arbitrary elements at low cost. In particular, the possibility of dequeueing arbitrary elements will improve memory utilization. This ability is also important in applications where frequent rescheduling may occur, as in ready queues used to select the next logical process to execute.
The Case for Quantitative Process Management (2008)

This article introduces a special section on "Embedding Statistical Methods into Software Engineering Practices." It provides a background on Quantitative Process Management and makes the case for why these methods are important. It presents an example of how a model can be developed to predict project outcomes by using data emerging from the performance of process tasks. It discusses how these methods can be used with different software development paradigms. It ends by summarizing develops needed in five different communities in order for these methods to be widely adopted.
Hardware design to accelerate PNG encoder for binary mask compression on FPGA (2015)

PNG (Portable Network Graphics) is a lossless compression method for real-world pictures. Since its specification, it continues to attract the interest of the image processing community. Indeed, PNG is an extensible file format for portable and well-compressed storage of raster images. In addition, it supports all of Black and White (binary mask), grayscale, indexed-color, and truecolor images. Within the framework of the Demat+ project which intend to propose a complete solution for storage and retrieval of scanned documents, we address in this paper a hardware design to accelerate the PNG encoder for binary mask compression on FPGA. For this, an optimized architecture is proposed as part of an hybrid software and hardware co-operating system. For its evaluation, the new designed PNG IP has been implemented on the ALTERA Arria II GX EP2AGX125EF35" FPGA. The experimental results show a good match between the achieved compression ratio, the computational cost and the used hardware resources.
Comparison of Chlorhexidine and Tincture of Iodine for Skin Antisepsis in Preparation for Blood Sample Collection (2004)

Rates of contamination of blood cultures obtained when skin was prepared with iodine tincture versus chlorhexidine were compared. For iodine tincture, the contamination rate was 2.7%; for chlorhexidine, it was 3.1%. The 0.41% difference is not statistically significant. Chlorhexidine has comparable effectiveness and is safer, cheaper, and preferred by staff, so it is an alternative to iodine tincture.
Dendritic Cell Subsets Differentially Regulate Angiogenesis in Human Ovarian Cancer (2004)

Angiogenesis is essential for both primary and metastatic tumor growth. Tumor blood vessel formation is complex and regulated by many factors. Ovarian carcinomas have a poor prognosis, often associated with multifocal intraperitoneal dissemination accompanied by intense neovascularization. To examine tumor angiogenesis in the tumor microenvironment, we studied malignant ascites of patients with untreated ovarian carcinoma. We observed high numbers of plasmacytoid dendritic cells (PDCs) and significant stromal-derived factor (CXCL-12/SDF)-1 in their malignant ascites, attracting PDCs into the tumor environment. We now show that tumor-associated PDCs induced angiogenesis in vivo through production of tumor necrosis factor alpha and interleukin 8. By contrast, myeloid dendritic cells (MDCs) were absent from malignant ascites. MDCs derived in vitro suppressed angiogenesis in vivo through production of interleukin 12. Thus, the tumor may attract PDCs to augment angiogenesis while excluding MDCs to prevent angiogenesis inhibition, demonstrating a novel mechanism for modulating tumor neovascularization. Because dendritic cells (DCs) have long been known to affect tumor immunity, our data also implicate DCs in regulation of tumor neoangiogenesis, suggesting a novel role of DCs in tumor pathology.
Superparamagnetic adsorbents for high‐gradient magnetic fishing of lectins out of legume extracts (2004)

This work presents the development, testing, and application in high-gradient magnetic fishing of superparamagnetic supports for adsorption of lectins. Various approaches were examined to produce affinity, mixed mode, and hydrophobic charge induction type adsorbents. In clean monocomponent systems affinity supports created by direct attachment of glucose or maltose to amine-terminated iron oxide particles could bind concanavalin A at levels of up to approximately 280 mg g(-1) support with high affinity ( approximately 1 microM dissociation constants). However, the best performance was delivered by adsorbents featuring coupled tentacular dextran chains displaying a maximum binding capacity of 238 mg g(-1) and a dissociation constant of 0.13 microM. Adsorbents derivatized with mixed mode or hydrophobic charge induction ligands likewise demonstrated very high capacities for both concanavalin A and Lens culinaris agglutinin (> or = 250 mg g(-1)) with dissociation constants in the micromolar range, though neither of these systems showed any selectivity for lectins in leguminous extracts. When the affinity supports were applied to carbohydrate containing legume extracts only the dextran-linked adsorbents supplied sufficient competition to dissolved sugars to selectively bind concanavalin A in an extract of jack beans. The dextran-linked supports were employed in a high-gradient magnetic fishing experiment, in which concanavalin A was purified to near homogeneity from a crude, unclarified extract of jack beans.
Coherent Envelope Detection for Modulation Filtering of Speech (2006)

Modulation filtering, which has been previously described as several related approaches to achieve modification of speech temporal dynamics, is shown to be less effective than intended. In particular, past Hilbert envelope approaches generate distortion which spreads across frequency sub-bands and modulation rejection is far from the amount intended. The source of this distortion is analyzed and a solution, based upon coherent envelope detection in each sub-band is proposed. This coherent approach is shown to be substantially more effective than conventional incoherent approaches on speech samples.