gebhart/patrepeval huggingface dataset:
Electromagnetic and thermal analysis of a multilayer CFRP panel struck by lightning with the FDTD method (2019)

The transient distribution of heat generated in a 16‐layer carbon fiber‐reinforced plastic (CFRP) panel, in which a lightning current with a magnitude of 3 kA, a rise time of 6.4 µs, and a time to half‐peak value of 69 µs is injected, has been computed. Each layer of the CFRP panel has a fiber axis direction of 45, 90, −45, or 0° and, therefore, has anisotropic electrical and thermal conductivities. This multilayer CFRP panel has been represented with a conductivity matrix consisting of off‐diagonal elements in the finite‐difference time domain (FDTD) simulation. The heat is computed, on the basis of FDTD‐computed conduction current densities, using a discretized heat equation. © 2019 Institute of Electrical Engineers of Japan. Published by John Wiley &amp; Sons, Inc.
Porphyrin Studies. V.1 The Metal Complex Salts of α,β,γ,δ-Tetraphenylporphine (1948)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPorphyrin Studies. V.1 The Metal Complex Salts of α,β,γ,δ-TetraphenylporphinePaul Rothemund and Amel R. MenottiCite this: J. Am. Chem. Soc. 1948, 70, 5, 1808–1812Publication Date (Print):May 1, 1948Publication History Published online1 May 2002Published inissue 1 May 1948https://pubs.acs.org/doi/10.1021/ja01185a047https://doi.org/10.1021/ja01185a047research-articleACS PublicationsRequest reuse permissionsArticle Views2191Altmetric-Citations205LEARN 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
Sufficient conditions used in admittance selection for force-guided assembly of polygonal parts (2003)

Admittance control approaches show significant promise in providing reliable force-guided assembly. An important issue in the development of these approaches is the specification of an appropriate admittance control law. This paper identifies procedures for selecting the appropriate admittance to achieve reliable force-guided assembly of planar polyhedral parts for single-point contact cases. A set of conditions that are imposed on the admittance matrix is presented. These conditions ensure that the motion that results from contact reduces part misalignment. We show that, for bounded misalignments, if an admittance satisfies the misalignment-reduction conditions at a finite number of contact configurations, then the admittance will also satisfy the conditions at all intermediate configurations.
Bang-Bang Trajectory Plans With Dynamic Balance Constraints: Fast Rotational Reconfigurations for RoboSimian (2014)

This paper investigates the problem of rapidly transitioning the pose of a limbed robot while remaining balanced. In particular, we consider motions where rotational accelerations may significantly affect the center of pressure location within a limited base of support. We consider solutions for high-impedance robots with stiff, high-torque actuators that essentially provide accurate, position-control outputs at the joints. We present and compare three methods for generating joint trajectories to achieve fast yet feasible dynamic motions for such systems while maintaining a safety margin for the center of pressure location, toward robust balance. We focus on development of theory and intuition for each method and quantify performance in terms of achievable speed of transition and required joint velocity limits.
Expression of the Rous Sarcoma Virus src Gene in Avian Macrophages Fails to Elicit Transformed Cell Phenotype (1984)

Infection of avian macrophages with Rous sarcoma virus does not induce any changes in the morphology, growth behavior, or expression of macrophage-specific proteins. The absence of cellular transformation does not result from a block in the synthesis of viral proteins, since infectious viruses are released from a majority of cells in the culture. In this report, we examine the synthesis, processing, and functional activity of pp60src in Rous sarcoma virus-infected macrophages to determine whether the absence of transformation is due to an alteration in the functional expression of pp60src. Although the absolute level of pp60src was reduced compared with fibroblasts, the protein exhibited the same phosphorylation pattern and subcellular distribution and was able to phosphorylate immunoglobulin in the immune complex-protein kinase assay. These results imply that the failure of Rous sarcoma virus to transform macrophage may be due to a restriction in the cellular response to a functional src protein, perhaps due to the absence of cellular products which are essential for mediating pp60src-induced transformation.
Learning Informative Edge Maps for Indoor Scene Layout Prediction (2015)

In this paper, we introduce new edge-based features for the task of recovering the 3D layout of an indoor scene from a single image. Indoor scenes have certain edges that are very informative about the spatial layout of the room, namely, the edges formed by the pairwise intersections of room faces (two walls, wall and ceiling, wall and floor). In contrast with previous approaches that rely on area-based features like geometric context and orientation maps, our method attempts to directly detect these informative edges. We learn to predict 'informative edge' probability maps using two recent methods that exploit local and global context, respectively: structured edge detection forests, and a fully convolutional network for pixelwise labeling. We show that the fully convolutional network is quite successful at predicting the informative edges even when they lack contrast or are occluded, and that the accuracy can be further improved by training the network to jointly predict the edges and the geometric context. Using features derived from the 'informative edge' maps, we learn a maximum margin structured classifier that achieves state-of-the-art performance on layout prediction.
Correlation Modeling for Compression of Computed Tomography Images (2013)

Computed tomography (CT) is a noninvasive medical test obtained via a series of X-ray exposures resulting in 3-D images that aid medical diagnosis. Previous approaches for coding such 3-D images propose to employ multicomponent transforms to exploit correlation among CT slices, but these approaches do not always improve coding performance with respect to a simpler slice-by-slice coding approach. In this paper, we propose a novel analysis which accurately predicts when the use of a multicomponent transform is profitable. This analysis models the correlation coefficient r based on image acquisition parameters readily available at acquisition time. Extensive experimental results from multiple image sensors suggest that multicomponent transforms are appropriate for images with correlation coefficient r in excess of 0.87.
Front Matter: Volume 7819 (2010)

This PDF file contains the front matter associated with SPIE Proceedings Volume 7819, including the Title Page, Copyright information, Table of Contents, introduction (if any), and the Conference Committee listing.
On Maximum-Likelihood Timing Synchronization (2007)

In this paper, we address the issue of symbol timing recovery for a coded burst transmission system. As direct maximum-likelihood (ML) estimation is intractable, we resort to the expectation-maximization (EM) algorithm in order to derive a receiver that iterates between data detection and synchronization. Conventional data-aided (DA) and decision-directed (DD) synchronizers can be interpreted as special cases of the proposed algorithm. The EM-based technique takes into account code properties and is especially well suited to scenarios where conventional schemes fail to provide the detector with a reliable timing estimate. The performance of the proposed algorithm is compared with conventional techniques through computer simulations, both in terms of mean-square estimation error (MSEE) and bit error rate (BER).
ADVANCES IN CARDIOVASCULAR RESEARCH (2012)

Attila Ziegelhoffer, Narcis Tribulova, Eva Goncalvesova, Jan Murin, Andrej Dukat, Gabriel Kamensky, Ludmila Okruhlicova, Daniela Jezova, Albert Breier, Miroslav Ferko, Petra Simoncikova, Jana Matejikova, Monika Ivanova, Jana Mujkosova, Veronika Franekova INTERNATIONAL ADVISORY BOARD Naranjan S. Dhalla, Pawan K. Singal, Grant N. Pierce, Lorrie Kirshenbaum, Ivan Berkowitz, Dennis B. McNamara, Felix Unger
Epidemiology and Genetic Variability of HHV-8/KSHV among Rural Populations and Kaposi’s Sarcoma Patients in Gabon, Central Africa. Review of the Geographical Distribution of HHV-8 K1 Genotypes in Africa (2021)

Human herpesvirus 8 (HHV-8) is the etiological agent of all forms of Kaposi's sarcoma (KS). K1 gene studies have identified five major molecular genotypes with geographical clustering. This study described the epidemiology of HHV-8 and its molecular diversity in Gabon among Bantu and Pygmy adult rural populations and KS patients. Plasma antibodies against latency-associated nuclear antigens (LANA) were searched by indirect immunofluorescence. Buffy coat DNA samples were subjected to polymerase chain reaction (PCR) to obtain a K1 gene fragment. We studied 1020 persons; 91% were Bantus and 9% Pygmies. HHV-8 seroprevalence was 48.3% and 36.5% at the 1:40 and 1:160 dilution thresholds, respectively, although the seroprevalence of HHV-8 is probably higher in Gabon. These seroprevalences did not differ by sex, age, ethnicity or province. The detection rate of HHV-8 K1 sequence was 2.6% by PCR. Most of the 31 HHV-8 strains belonged to the B genotype (24), while the remaining clustered within the A5 subgroup (6) and one belonged to the F genotype. Additionally, we reviewed the K1 molecular diversity of published HHV-8 strains in Africa. This study demonstrated a high seroprevalence of HHV-8 in rural adult populations in Gabon and the presence of genetically diverse strains with B, A and also F genotypes.
Navigation visuelle pour l'atterrissage planétaire de précision indépendante du relief (2013)

This thesis introduces Lion, a vision-aided inertial navigation system for pinpoint planetary landing. Lion can fly over any type of terrain, whatever its topography, flat or not. Landing an autonomous spacecraft within 100 meters of a mapped target is a navigation challenge in planetary exploration. Vision-based approaches attempt to pair 2D features detected in camera images with 3D mapped landmarks to reach the required precision. Lion tightly uses measurements from a novel image-tomap matcher in order to update the state of an extended Kalman filter propagated with inertial data. The image processing uses the state and covariance predictions from the filter to determine the regions and extraction scales in which to search for non-ambiguous landmarks in the image. The individual image scale management process per landmark greatly improves the repeatability rate between the map and descent images. We also designed a lunar-representative optical test bench called Visilab to test Lion on. The observability of absolute navigation performances in Visilab is evaluated with a novel error budget model. Finally, the system performances are evaluated at the key altitudes of a lunar landing, in terms of accuracy and robustness to sensor or illumination changes, off-nadir camera angle, and non-planar topography. We demonstrate error convergence down to a mean of 4 meters and a 3-RMS dispersion of 47 meters at 3 kilometers of altitude in hardware conditions at scale.
Subwavelength ripples adjustment based on electron dynamics control by using shaped ultrafast laser pulse trains (2012)

This study reveals that the periods, ablation areas and orientations of periodic surface structures (ripples) in fused silica can be adjusted by using designed femtosecond (fs) laser pulse trains to control transient localized electron dynamics and corresponding material properties. By increasing the pulse delays from 0 to 100 fs, the ripple periods are changed from ~550 nm to ~255 nm and the orientation is rotated by 90°. The nearwavelength/subwavelength ripple periods are close to the fundamental/second-harmonic wavelengths in fused silica respectively. The subsequent subpulse of the train significantly impacts free electron distributions generated by the previous subpulse(s), which might influence the formation mechanism of ripples and the surface morphology.
Supplementary Movie 7 from Ovarian Cancer Spheroids Use Myosin-Generated Force to Clear the Mesothelium (2023)

&lt;p&gt;File Type: .mov; File Size: 5 MB.&lt;/p&gt;
One‐pot synthesis of novel spiro‐annelated pyrrole‐containing heterocyclic systems from suitable synthons (1992)

Abstract New tetracyclic systems containing a pyrrolobenzodiazepine 5 or a pyrrolobenzotriazepine 6 moiety bounded by a spiro linkage to the piperidine nucleus are described. They have been synthesized by a simple reaction involving the interaction between proper aromatic amines and 4‐oxopiperidines substituted or not at the 1‐position in the presence of maleic acid as a catalyst. The synthesis of spiropyrrolo[1,2‐ a ]quinoxaline‐2,4′‐piperidine 7 and its 1′‐acyl derivatives by the same procedure is also reported.
NF/Observatory Networking with Linux (1997)

An observatory in New Mexico uses Linux to network the computers providing remote control of its optical telescope
Egg White Avidin (1971)

From a tryptic hydrolysate of reduced and carboxymethylated egg white avidin, 16 major peptides, ranging from 2 to 17 residues, were isolated by further purification of the fractions obtained by gradient elution from Dowex 50-X2.The combined compositions of these 16 peptides, together with free lysine which was also isolated from the tryptic hydrolysate, account for 128 residues in agreement with the composition of the subunit of avidin, determined
Combustion signatures of various energetic metal powders in a shock tube experiment (2011)

Metal additives are used in explosives and solid propellants in order to increase the energetic&#13;\noutput and effectiveness of the explosives or fuel. Aluminum has been the primary solid fuel&#13;\nadditive to solid fuel to improve the combustive properties of propellants. Several other metals&#13;\nare being considered for explosive material applications, such as reactive materials, reactive&#13;\nfragments, and metalized explosions. It is important to understand the burning characteristics of&#13;\nthese materials in order to optimize their use. This study focuses on comparing the spectroscopic&#13;\noutputs of several energetic metals with that of aluminum. Spectroscopic analysis helps develop&#13;\noptical diagnostics for systems involving combustions of advanced metals. A shock tube&#13;\nexperimental setup was used to ignite the powders, and resultant spectra were recorded. Metals&#13;\ntested include aluminum, boron, magnesium, hafnium, zirconium, titanium, manganese, silicon,&#13;\nstrontium, and scandium. Finally, the resultant spectrum of each metal tested is explained, and&#13;\nan analysis on the results was performed.
Expanding discriminative dimensions for analysis and imaging (2015)

Eliminating the contribution of interfering compounds is a key step in chemical analysis. In complex media, one possible approach is to perform a preliminary separation. However purification is often demanding, long, and costly; it may also considerably alter the properties of interacting components of the mixture (<i>e.g.</i> in a living cell). Hence there is a strong interest for developing separation-free non-invasive analytical protocols. Using photoswitchable probes as labelling and titration contrast agents, we demonstrate that the association of a modulated monochromatic light excitation with a kinetic filtering of the overall observable is much more attractive than constant excitation to read-out the contribution from a target probe under adverse conditions. An extensive theoretical framework enabled us to optimize the out-of-phase concentration first-order response of a photoswitchable probe to modulated illumination by appropriately matching the average light intensity and the radial frequency of the light modulation to the probe dynamics. Thus, we can selectively and quantitatively extract from an overall signal the contribution from a target photoswitchable probe within a mixture of species, photoswitchable or not. This simple titration strategy is more specifically developed in the context of fluorescence imaging, which offers promising perspectives.
Development and Validation of the Quality-of-Life Adolescent Cleft Questionnaire in Patients With Cleft Lip and Palate (2014)

Only a few reports in the literature have described the use of specific instruments for assessing the quality of life in adolescents and young adults with cleft lip and palate (CLP). This condition markedly affects their lifestyle, even after surgical treatment. In the present study, we aimed to develop a quality-of-life assessment tool specifically designed for such patients with CLP. Our multidisciplinary team created a questionnaire focused on the physical, psychological, and social satisfaction of adolescents and young adults with CLP, which was adapted from 3 dimensions of the 36-item Short-Form Health Survey. The questionnaire was administered to a randomized sample of 40 adolescents and young adults (aged 16-24 years) with CLP who had completed treatment protocols and 40 (aged 16-24 years) who were not affected by CLP. The statistical results stated that the questionnaire had good reliability and validity; the Cronbach α coefficient was found to be 0.944. Moreover, factorial analysis confirmed the presence of 3 subscales that were the fundamental components of this questionnaire, which is consistent with the areas theoretically proposed and from which the items were designed and selected. Thus, we validated our novel questionnaire that was administered in the present study and proved its consistency. However, further investigations on a larger population would be useful to confirm these findings.
Microwave generation for magnetic fusion energy applications. Progress report, July 15, 1992--July 14, 1993 (1993)

This work strives to develop high average power FELs at voltages below I MV allowing for smaller and less costly power supplies. To achieve operation of an FEL with 100 GHZ {approx_lt} f {approx_lt} 150 GHz and with relatively modest voltage, we have been investigating the use of small period ({lambda}{sub {omega}} {approximately} 1 cm) planar wiggler magnets together with sheet electron beams. The sheet beam geometry allows for an FEL interaction region in the form of a narrow slit with high wiggler field at the center plane where the electrons are concentrated. The total current and power may then be increased without making current density excessive by increasing the wide dimension of the sheet beam. Sheet beam FEL design parameters for both a Proof-of-Principle (PoP) FEL experiment, which is current in progress, and an ITER relevant FEL design are shown. A central issue in the sheet beam FEL concept is propagation of the beam through the interaction region without excessive interception by the walls. In section 2 below we describe a successful experimental demonstration of sheet beam propagation through a 56 period uniform wiggler. Cold testing and initial hot test operation of the (PoP) FEL amplifier are also described. Finally, we present a theoretical investigation of the bandwidth of an FEL amplifier with a tapered wiggler operating in saturation is described.
Market place et distribution sélective - État des lieux et perspectives (2016)

Petit-dejeuner Droit & Economie organise par la Revue Concurrences en partenariat avec Allen & Overy et Compass Lexecon.
Perception, représentation et planification de l'action dans l'organisation syntaxique de l'exécution de dessins complexes (2004)

Pour reproduire des dessins complexes composes de figures geometriques simples emboitees, les enfants, des l'âge de quatre ans, adoptent un procede consistant a tracer les differentes formes elementaires de la peripherie vers le centre. En raison de l'emergence, la prevalence et la stabilisation precoces de ce mode d'organisation de l'execution au cours du developpement, on parle de Principe de l'Execution Centripete (PEC). La presente recherche a pour objet de determiner, au cours du developpement (chez l'enfant de 5 a 10 ans), le role du contenu et du format des representations elaborees dans la mise en oeuvre de PEC. Les enfants etaient invites a executer leurs dessins par le trace ou la superposition des formes elementaires dans une tâche de copie, de rappel (requerant la memorisation des informations encodees) ou/et de coordination d'informations locales (production des dessins-cibles a partir de deux images lacunaires). Nous formulons l'hypothese generale selon laquelle le PEC repose sur une operation de planification de l'action s'appuyant sur une integration cohesive des informations (construction de representations globales des dessins), conditionnee conjointement par le contenu et le format des representations elaborees. Les resultats indiquent que l'adoption du PEC releve d'un traitement holistique des donnees, lie a une apprehension perceptive globale des stimuli explores (copie) ou a une integration cohesive des donnees (rappel et coordination d'informations locales). Elle dependrait egalement du format des representations (image, verbal / propositionnel, moteur / tactilo-kinesthesique) pouvant etre exploitees efficacement au cours du developpement.
Towards Zero Retransmission Overhead: A Symbol Level Network Coding Approach to Retransmission (2011)

We present SYNC, a physical layer transmission scheme that drastically reduces the cost of retransmission by introducing network coding concepts to symbol level operation. It piggybacks a new packet on each retransmitted packet, and exploits the previously received packet (possibly with error) at the receiver to recover both the retransmitted packet and the piggybacked packet. The piggybacking is achieved through higher modulation, but it does not decrease the decodability of the mixed packets owing to the previously received packet at the receiver, which can be analytically shown. SYNC works independently of other PHY level performance boosting schemes such as channel coding and spatial diversity. The proof-of-concept SYNC prototype has been implemented on a software defined radio (SDR) platform. The measurement data shows that under the same channel condition SYNC achieves 110 percent and 42 percent median throughput gain over traditional retransmission and SOFT, respectively. We also show that SYNC can be used proactively where the feedback as to the success of the previous transmission is not available, such as in broadcast.