gebhart/patrepeval huggingface dataset:
CFM56 Jet Noise Reduction with the Chevron Nozzle (2004)

Over the past few years, chevron nozzles have shown promising results to reduce jet noise on moderate to high bypass ratio engines. To support CFM noise reduction packages, GE Aircraft Engines and Snecma Moteurs have performed series of acoustic test campaigns in anechoic wind tunnel jet noise facilities equipped with external flow simulation to assess the jet noise reduction that could be achieved with chevron nozzles on the CFM56 engine. The chevron technology has been applied both to the current nozzle with an internal plug and to a new nozzle design with an external plug. Screening tests have been performed on isolated nozzle configurations at GE Aircraft Engine’s Cell41 scale model acoustic test facility with the most promising configurations tested installed on a partial scale model of an aircraft, in the CEPRA19 anechoic wind tunnel at ONERA. Core and fan chevrons were tested with the pylon for various engine operating conditions and different installed configurations including take-off, cut-back and approach, with appropriate angle of attack and flap settings. The most promising scaled configuration has recently been evaluated during an in flight test campaign with an aircraft equipped with two CFM56 engines. This paper presents the results of tests relative to the jet noise reduction levels achieved at high power setting conditions. Under wing installation effects on jet noise and their impact on the chevron nozzle effectiveness are discussed.
Design and implementation of area-optimized AES based on FPGA (2011)

A new FPGA-based implementation scheme of the AES-128 (Advanced Encryption Standard, with 128-bit key) encryption algorithm is proposed in this paper. For maintaining the speed of encryption, the pipelining technology is applied and the mode of data transmission is modified in this design so that the chip size can be reduced. The 128-bit plaintext and the 128-bit initial key, as well as the 128-bit output of ciphertext, are all divided into four 32-bit consecutive units respectively controlled by the clock. The synthesis verification based on HJTC0.18um CMOS process shows that this new program can significantly decrease quantity of chip pins and effectively optimize the area of chip.
PRODUCTION DEVELOPMENT STRATEGIES THROUGH INDUSTRY 4.0 (2020)

We are currently in the midst of a fourth wave of technological growth and the development of an industrial technology known as Industry 4.0. Industry 4.0 can be broken down into three major paradigms: smart product, smart machine and augmented operator. through which the factory operations are digital, which could imply and will put into operation the position of the producers on the market. Industry 4.0 is the future solution.
An automatic wrapper generation process for large scale crawling of news websites (2014)

The creation and maintenance of a large-scale news content aggregator is a tedious task, which requires more than a simple RSS aggregator. Many news sites appear every day on the Internet, providing new content in different refresh rates; well established news sites restrict access to their content only to subscribers or online readers, without offering RSS feeds, whereas other sites update their CMS or website tem-plate and lead crawlers to fetch errors. The main problem that arises from this continuous generation and alteration of pages on the Internet is the automated discovery of the appropriate and useful content and the dynamic rules that crawlers need to apply in order not to become outdated. In this paper we present an innovative mechanism for extracting useful content (title, body and media) from news articles web pages, based on automatic extraction of patterns that form each domain. The system is able to achieve high performance by combining information gathered while discovering the structure of a news site, together with "knowledge" that acquires at each crawling step, in order to improve the quality of the next steps of its own procedure. Additionally, the system can recognize changes in patterns in order to rebuild the domain rules whenever the domain changes structure. This system has been successfully implemented in palo.rs, the first news search engine in Serbia.
Use of ACR Method to Estimate Closure and Residual Stress Free Small Crack Growth Data (2005)

Abstract Life predictions for small cracks emanating from material inhomogeneities or small flaws caused by manufacturing or corrosion damage are becoming increasingly important for several reasons, including: concerns over widespread fatigue damage; a shift in philosophy for fatigue initiation design from stress-life (S-N) to the equivalent initial flaw size (EIFS) approach, and the greater usage of unitized structure. For these reasons, development of accurate fatigue crack growth rate (FCGR) data in the near threshold region is needed, which is not influenced by closure or residual stress. Threshold data ARE often generated from long crack specimens by load shedding as outlined in ASTM E 647. However, this data can be non-conservative and variable due to load history effects caused by crack closure. Generating closure-free short crack FCGR data requires much more sophisticated instrumentation and testing techniques than long crack testing, making it prohibitively expensive to perform on a routine basis. Small crack tests also sample only a small volume of material and typically exhibit large scatter, so multiple tests must be performed in order to determine the typical or average behavior of the material. As a result of these disadvantages, use of long crack tests to estimate short crack behavior is the preferred approach. The objective of this study was to evaluate the adjusted compliance ratio (ACR) method for obtaining residual stress and closure-free data from long crack tests and to compare the ACR method against the current ASTM opening load method. The ACR method was developed by Donald for estimating the closure-free ΔKeff FCGR curve from standard long crack tests. To evaluate the method's ability to estimate closure-free data, standard ASTM long crack tests and short corner crack tests were conducted on 7075-T651 and 2324-T39 alloys. The ΔKeff FCGR data resulting from the application of the ACR method to the ASTM long crack test results were then compared with the closure-free short corner crack data. Additionally, to assess the method's ability to account for residual stresses, long crack tests using ASTM standard middle crack and compact tension specimens, prepared from alloy 7055-T74511, were conducted, and the resulting ΔKapplied and ΔKeff FCGR data were compared.
Treatment of aqueous solutions of oxytetracycline by different electrochemical approaches: anodic oxidation, pressurized electro‐Fenton and oxidation by electrogenerated active chlorine (2023)

Abstract The tetracycline group (TCs) includes the most common antibiotics for treatment of both human and animal infections. TCs are resistant to biological degradation; hence, conventional wastewater treatments are unable to remove these contaminants. Here, the utilization of different electrochemical processes, such as electro‐Fenton (EF), direct anodic oxidation (AO) and indirect oxidation by electrogenerated active chlorine (EAC), for the treatment of aqueous solutions of oxytetracycline (OTC), which is one of the TCs, was studied. The effect of various operating conditions was evaluated to optimize the selected processes. EAC gave the fastest abatement of OTC, but the lowest removal of TOC and formation of chlorate. However, the utilization of carbon felt cathodes allowed the formation of chlorate to be reduced. AO gave the highest TOC removals, but it required the use of an expensive anode, as BDD, and high cell potentials. EF performed with pressurized‐air (5–10 bar) presented intermediate removals of OTC and TOC with respect to AO and EAC and consumed the least energy. © 2023 The Authors. Journal of Chemical Technology and Biotechnology published by John Wiley &amp; Sons Ltd on behalf of Society of Chemical Industry (SCI).
Heterocyclic Chemistry in Drug Discovery. Herausgegeben von Jie Jack Li. (2013)

John Wiley and Sons, Hoboken, 2013. 720 S., geb., 150.00 $.—ISBN 978-1118148907
Preliminary Characterization of Extracellular Allelochemicals of the Toxic Marine Dinoflagellate Alexandrium tamarense Using a Rhodomonas salina Bioassay (2009)

Members of the marine dinoflagellate genus Alexandrium are known to exude allelochemicals, unrelated to well-known neurotoxins (PSP-toxins, spirolides), with negative effects on other phytoplankton and marine grazers. Physico/chemical characterization of extracellular lytic compounds of A. tamarense, quantified by Rhodomonas salina bioassay, showed that the lytic activity, and hence presumably the compounds were stable over wide ranges of temperatures and pH and were refractory to bacterial degradation. Two distinct lytic fractions were collected by reversed-phase solid-phase extraction. The more hydrophilic fraction accounted for about 2% of the whole lytic activity of the A. tamarense culture supernatant, while the less hydrophilic one accounted for about 98% of activity. Although temporal stability of the compounds is high, substantial losses were evident during purification. Lytic activity was best removed from aqueous phase with chloroform-methanol (3:1). A "pseudo-loss" of lytic activity in undisturbed and low-concentrated samples and high activity of an emulsion between aqueous and n-hexane phase after liquid-liquid partition are strong evidence for the presence of amphipathic compounds. Lytic activity in the early fraction of gel permeation chromatography and lack of activity after 5 kD ultrafiltration indicate that the lytic agents form large aggregates or macromolecular complexes.
Integrated Stratigraphic Correlation of Upper Devonian Platform-to-Basin Carbonate Sequences, Lennard Shelf, Canning Basin, Western Australia: Advances in Carbonate Margin-to-Slope Sequence Stratigraphy and Stacking Patterns (2017)

High-resolution, time-significant correlations are integral to meaningful stratigraphic frameworks in depositional systems, but may be difficult to achieve using traditional sequence stratigraphic or biostratigraphic approaches alone, particularly in geologically complex settings. In steep, reefal carbonate margin-to-slope systems, such correlations are essential to unravel shelf-to-basin transitions, characterize strike variability, and develop predictive sequence stratigraphic models – concepts which are currently poorly understood in these heterogeneous settings. The Canning Basin Chronostratigraphy Project (CBCP) integrates multiple independent datasets (including biostratigraphy, magnetostratigraphy, stable isotope chemostratigraphy, and sequence stratigraphy) extracted from Upper Devonian (Frasnian and Famennian) reefal platform exposures along the Lennard Shelf, Canning Basin, Western Australia. These were used to generate a well-constrained stratigraphic framework and shelf-to-basin composite reconstruction of the carbonate system.&#13;\n&#13;\nThe resultant integrated framework allows for unprecedented analysis of carbonate margin-to-slope heterogeneity, depositional architecture, and sequence stratigraphy along the Lennard Shelf. Systems tract architecture, facies partitioning, and stacking patterns of margin to lower-slope environments were assessed for six composite-scale sequences that form part of a transgressive-to-regressive supersequence and span the Frasnian-Famennian (F-F) biotic crisis. Variations are apparent in margin styles, foreslope facies proportions, dominant resedimentation processes, downslope contributing sediment factories, and vertical rock successions, related to hierarchical accommodation signals and ecological changes associated with F-F boundary. We present these results in the form of carbonate margin-to-basin sequence stratigraphic models and associations that link seismic-scale architecture to fine-scale facies heterogeneity. These models provide a predictive foundation for characterization of steep-sided flanks of reefal carbonate platform systems that is useful for both industry and academia. This study emphasizes the utility of an integrated stratigraphic approach and the insights gained from better-constrained facies and stratal architecture analysis; insights that were not achievable with traditional sequence stratigraphic or biostratigraphic techniques alone.
Querying Multiple Features of Groups in Relational Databases (1996)

Some aggregate and grouping queries are conceptually simple, but difficult to express in SQL. This difficulty causes both conceptual and implementation problems for the SQLbased database system. Complicated queries and views are hard to understand and maintain. Further, the code produced is sometimes unnecessarily inefficient, as we demonstrate experimentally using a commercial database system. In this paper, we examine a class of queries involving (potentially repeated) selection, grouping and aggregation over the same groups, and propose an extension of SQL syntax that allows the succinct representation of these queries. We propose a new relational algebra operation that represents several levels of aggregation over the same groups in an operand relation. We demonstrate that the extended relational operator can be evaluated using efficient algorithms. We describe a translation from the extended SQL language into our algebraic language. We have implemented a preprocessor that evaluate...
The Price of Low Communication in Secure Multi-Party Computation. (2017)

Traditional protocols for secure multi-party computation among n parties communicate at least a linear (in n) number of bits, even when computing very simple functions. In this work we investigate the feasibility of protocols with sublinear communication complexity. Concretely, we consider two clients, one of which may be corrupted, who wish to perform some “small” joint computation using n servers but without any trusted setup. We show that enforcing sublinear communication complexity drastically affects the feasibility bounds on the number of corrupted parties that can be tolerated in the setting of information-theoretic security.
Levitation scheme and vacuum chamber for iSENSE (2011)

Séminaire
Transcription of adenovirus type 2 genes in a cell-free system: apparent heterogeneity of initiation at some promoters. (1981)

We examined the transcription of a variety of adenovirus type 2 genes in a cell-free system containing purified ribonucleic acid polymerase II and a crude extract from cultured human cells. The early EIA, EIB, EIII, and EIV genes and the intermediate polypeptide IX gene, all of which contain a recognizable TATAA sequence upstream from the cap site, were actively transcribed in vitro, albeit with apparently different efficiencies, whereas the early EII (map position 74.9) and IVa2 genes, both of which lack a TATAA sequence, were not actively transcribed. A reverse transcriptase-primer extension analysis showed that the 5' ends of the in vitro transcripts were identical to those of the corresponding in vivo ribonucleic acids and that, in those instances where initiation was heterogeneous in vivo, a similar kind of heterogeneity was observed in the cell-free system. Transcription of the polypeptide IX gene indicated that this transcript was not terminated at, or processed to, the polyadenylic acid addition site in vitro. We also failed to observe, using the in vitro system, any indication of transcriptional regulation based on the use of adenovirus type 2-infected cell extracts.
Greedy algorithms for time-frequency allocation in a SDMA satellite communication system (2012)

International audience
Artificial intelligence in politics (2018)

Natural language processing, an area of artificial intelligence (AI), has attained remarkable successes. Digital assistants such as Siri and Alexa respond to spoken commands, and understand several languages. Google has demonstrated a machine can call up a restaurant and make a reservation in a manner that is indistinguishable from a human. Automated translation services are used around the world in over a hundred languages. This interview discusses a new and surprising application of language processing in politics. Though the AI software analyzes texts in German, it could be adapted to any language. The underlying technology has wider applications in text analysis, including legal tech, contracting, and others. Here is a summary.
Complicating the Social Networks for Better Storytelling: An Empirical Study of Chinese Historical Text and Novel (2021)

Digital humanities is an important subject because it enables developments in history, literature, and films. In this article, we perform an empirical study of a Chinese historical text, Records of the Three Kingdoms (Records), and a historical novel of the same story, Romance of the Three Kingdoms (Romance). We employ deep-learning-based natural language processing (NLP) techniques to extract characters and their relationships. The adopted NLP approach can extract 93% and 91% characters that appeared in the two books, respectively. Then, we characterize the social networks and sentiments of the main characters in the historical text and the historical novel. We find that the social network in Romance is more complex and dynamic than that of Records, and the influence of the main characters differs. These findings shed light on the different styles of storytelling in the two literary genres and how the historical novel complicates the social networks of characters to enrich the literariness of the story.
Cardiac cine magnetic resonance fingerprinting for combined ejection fraction, T1 and T2 quantification (2020)

This study introduces a technique called cine magnetic resonance fingerprinting (cine-MRF) for simultaneous T<sub>1</sub> , T<sub>2</sub> and ejection fraction (EF) quantification. Data acquired with a free-running MRF sequence are retrospectively sorted into different cardiac phases using an external electrocardiogram (ECG) signal. A low-rank reconstruction with a finite difference sparsity constraint along the cardiac motion dimension yields images resolved by cardiac phase. To improve SNR and precision in the parameter maps, these images are nonrigidly registered to the same phase and matched to a dictionary to generate T<sub>1</sub> and T<sub>2</sub> maps. Cine images for computing left ventricular volumes and EF are also derived from the same data. Cine-MRF was tested in simulations using a numerical relaxation phantom. Phantom and in vivo scans of 19 subjects were performed at 3 T during a 10.9 seconds breath-hold with an in-plane resolution of 1.6 x 1.6 mm<sup>2</sup> and 24 cardiac phases. Left ventricular EF values obtained with cine-MRF agreed with the conventional cine images (mean bias -1.0%). Average myocardial T<sub>1</sub> times in diastole/systole were 1398/1391 ms with cine-MRF, 1394/1378 ms with ECG-triggered cardiac MRF (cMRF) and 1234/1212 ms with MOLLI; and T<sub>2</sub> values were 30.7/30.3 ms with cine-MRF, 32.6/32.9 ms with ECG-triggered cMRF and 37.6/41.0 ms with T<sub>2</sub> -prepared FLASH. Cine-MRF and ECG-triggered cMRF relaxation times were in good agreement. Cine-MRF T<sub>1</sub> values were significantly longer than MOLLI, and cine-MRF T<sub>2</sub> values were significantly shorter than T<sub>2</sub> -prepared FLASH. In summary, cine-MRF can potentially streamline cardiac MRI exams by combining left ventricle functional assessment and T<sub>1</sub> -T<sub>2</sub> mapping into one time-efficient acquisition.
Hybrid Hall effect device (1997)

A novel magnetoelectronic device incorporating a single microstructured ferromagnetic film and a micron scale Hall cross was fabricated and characterized at room temperature. Magnetic fringe fields from the edge of the ferromagnet generate a Hall voltage in a thin film semiconducting Hall bar. The sign of the fringe field, as well as the sign of the output Hall voltage, is switched by reversing the magnetization of the ferromagnet. This new device has excellent output characteristics and scaling properties, and may find application as a magnetic field sensor, nonvolatile storage cell, or logic gate.
Synthesis of Biocompatible Polymers with Aspirin-Moieties for Aspirin Delivery (1991)

Polyacrylate and polyhydroxylate polymers with aspirin moieties were prepared. The acrylate polymers were obtained by the synthesis and poly merization of several new monomers; β-(acetylsalicylyloxy)ethy methacrylate, β-(acetylsalicylyloxy)propyl methacrylate, β-(acetylsalicylyloxy)ethy acrylate, β-hydroxy-γ-(acetylsalicylyloxy)ethyl methacrylate and β-hydroxy-γ-(acetylsali cylyloxy)propyl methacrylate. The second series of biocompatible polymers with aspirin moieties was prepared by reacting the hydroxyl group of poly(vinyl alcohol) and poly(allyl alcohol) with 1-(acetylsalicylyl)benzotriazole. Both the homogeneous and heterogeneous hydrolysis of eight biocompatible polymers and copolymer with aspirin moieties were investigated in acidic or alkaline medium at 37 ° C or 60 °C, respectively. The main hydrolysis product was aspi rin with minor amounts of salicylic acid. The release rates of aspirin and sali cylic acid were related to the hydrolysis temperature, and the length of side chain. The release rate of aspirin and salicylic acid from poly[1-(acetylsalicylyl oxy)ethyl methacrylate-co-methacrylic acid] is markedly dependent on polymer composition and the pH value of hydrolysis medium.
Notes from the Director, National Heart, Lung, and Blood Institute: transitions (2009)

Abstract During this time of transition in the federal government and the National Institutes of Health, I write to assure the Blood community of the National Heart, Lung, and Blood Institute's (NHLBI) commitment to new and established investigators as outlined in the NHLBI Strategic Plan. This perspective discusses the NHLBI budget for the fiscal year 2009 and new policies for funding early stage investigators and revised grant applications.
Cardiac MR image segmentation and left ventricle surface reconstruction based on level set method. (2005)

A two-stage segmentation algorithm is presented to solve the problems of inhomogeneity, weak edges and artifacts exhibited in the magnetic resonance imaging (MRI) images. First, the K-mean clustering algorithm is applied to classify the objects. Then, a speed function based on the clustering results is defined in order to search the rough boundary. Secondly, a speed function of the gradient intensity is constructed to locate the boundary accurately. Due to the lack of deformation information of the boundaries between MR slices, a deformable model is used to reconstruct the shape of the LV: a dynamic equation governing the surface deformation is given; from the slice data, external forces are constructed and elastic forces are provided with mean curvatures of the deformation surface. The level set method is applied to solve the dynamic equation for the LV shape. Experimental results demonstrate the effectiveness of the algorithm listed in the paper.