gebhart/patrepeval huggingface dataset:
PRECISION POLISHING DYNAMICS: THE INFLUENCE OF PROCESS VIBRATIONS ON POLISHING RESULTS (2014)

The optical pitch polishing process has been used over 300 years to obtain high quality optical surface finish with little subsurface damage. A pitch tool consists of a metal platen coated with a layer of polishing pitch whereby pitch is a highly viscoelastic material. In polishing the workpiece is rubbed against the tool while abrasive slurry is supplied in between them. During polishing the workpiece is subjected to process vibrations, whereby be these vibrations are generated by the machine itself due to moving parts, or that are transmitted from the shop floor through the machine to the workpiece. To date, little is available in the public domain regarding the role of process induced vibrations on polishing outcomes. This research investigates such vibrations, how they transfer through the pitch layer on the tool, and ultimately how they affect the material removal rates and surface finishes obtainable on fused silica workpieces. Fundamental understandings with respect to the process vibration will reduce the heuristic nature of pitch polishing and generate deterministic polishing outcomes. Key findings include the following. The pitch selection has little influence on the magnitude or range of process vibrations transmitted through the tool to the workpiece in the 1 Hz to 16 kHz range. Within the same frequency bandwidth the recorded process vibrations are in the range of 0.2 to 10 nm and the main factors found to affect their magnitude include; the polishing machine itself, process speeds, and the use of passive damping materials in the tool construction. Material removal rates and surface finishes obtained on fused silica workpieces were found to be sensitive to the extent of the process vibrations. Up to 30% changes in the material removal rates were observed with increasing vibrational magnitudes. The higher level vibrations were also found to have a negative impact on the finishes obtained in the lower spatial domains. Additional testing on a specifically made test-bed demonstrated a linear correlation between the material removal rates and the vibrational power input. This relationship was further explored by adding external vibrational sources to an existing machine, and as expected the increased vibrational power resulted in 80% higher material removal rates. The results from this experimental work facilitated Dr. Keanini’s development of a vibrational based material removal model. Additional polishing tests combined with surface topography analysis of both hard and soft pitch tools demonstrated the robustness of the proposed model to accommodate the influence of different pitch grades. The summary in general is that in pitch polishing the process vibrations are important to monitor and control for process optimization.
An Evaluation Of RFID Door Security System At Taipei Arena Ice Land Based On Technology Acceptance Model (2013)

This study is based on technology acceptance model (TAM). It investigates consumer attitudes toward the use of and consumer behavioral intention to use an RFID door security system at Taipei Arena Ice Land. This study adopts a questionnaire method using purposive sampling and collects data from 250 consumers of Taipei Arena Ice Land. The results of this study show that: 1) system quality has a significant positive impact on perceived usefulness and perceived ease of use, 2) information quality has a significant positive impact on perceived usefulness and perceived ease of use, 3) service quality does not have a significant positive impact on perceived usefulness and perceived ease of use, 4) perceived ease of use has a significant positive impact on perceived usefulness, 5) perceived usefulness and perceived ease of use have a significant positive impact on attitudes toward use, 6) attitudes toward using have a significant positive impact on behavioral intentions to use, 7) perceived usefulness has a significant positive impact on behavioral intentions to use, and 8) perceived ease of use has a significant impact on attitude toward using via perceived usefulness.
High-power density hybrid converter topologies for low-power Dc-Dc SMPS (2014)

This paper gives a review of several emerging dc-dc converter topologies that combine capacitor-based and inductive converters in single hybrid converter structures. It is shown that, compared to the conventional topologies, the hybrid buck converters allow for a drastic reduction of the inductive components while minimizing switching losses and improving the overall power processing efficiency. Therefore, the hybrid converters result in a higher power density. As examples, buck with merged capacitive divider, a two-phase interleaved buck, and a differential buck-based multi-output power module for mobile applications are shown. The presented converters have up to four times smaller inductor volume and, at the same time, about 12% lower losses.
GANs for Biological Image Synthesis (2017)

In this paper, we propose a novel application of Generative Adversarial Networks (GAN) to the synthesis of cells imaged by fluorescence microscopy. Compared to natural images, cells tend to have a simpler and more geometric global structure that facilitates image generation. However, the correlation between the spatial pattern of different fluorescent proteins reflects important biological functions, and synthesized images have to capture these relationships to be relevant for biological applications. We adapt GANs to the task at hand and propose new models with casual dependencies between image channels that can generate multichannel images, which would be impossible to obtain experimentally. We evaluate our approach using two independent techniques and compare it against sensible baselines. Finally, we demonstrate that by interpolating across the latent space we can mimic the known changes in protein localization that occur through time during the cell cycle, allowing us to predict temporal evolution from static images.
Non-canonical CRP sites control competence regulons in Escherichia coli and many other γ-proteobacteria (2006)

Escherichia coli's cAMP receptor protein (CRP), the archetypal bacterial transcription factor, regulates over a hundred promoters by binding 22 bp symmetrical sites with the consensus core half-site TGTGA. However, Haemophilus influenzae has two types of CRP sites, one like E.coli's and one with the core sequence TGCGA that regulates genes required for DNA uptake (natural competence). Only the latter 'CRP-S' sites require both CRP and the coregulator Sxy for activation. To our knowledge, the TGTGA and TGCGA motifs are the first example of one transcription factor having two distinct binding-site motifs. Here we show that CRP-S promoters are widespread in the gamma-proteobacteria and demonstrate their Sxy-dependence in E.coli. Orthologs of most H.influenzae CRP-S-regulated genes are ubiquitous in the five best-studied gamma-proteobacteria families, Enterobacteriaceae, Pasteurellaceae, Pseudomonadaceae, Vibrionaceae and Xanthomonadaceae. Phylogenetic footprinting identified CRP-S sites in the promoter regions of the Enterobacteriaceae, Pasteurellaceae and Vibrionaceae orthologs, and canonical CRP sites in orthologs of genes known to be Sxy-independent in H.influenzae. Bandshift experiments confirmed that E.coli CRP-S sequences are low affinity binding sites for CRP, and mRNA analysis showed that they require CRP, cAMP (CRP's allosteric effector) and Sxy for gene induction. This work suggests not only that the gamma-proteobacteria share a common DNA uptake mechanism, but also that, in the three best studied families, their competence regulons share both CRP-S specificity and Sxy dependence.
ON THE DESCRIPTION OF CONTINUOUSLY CONTRA-LAGRANGE GRAPHS (2019)

Let us suppose r 0. It has long been known that every subset is geometric and locally hyper-Eratosthenes [33]. We show that Klein's criterion applies. P. Selberg's description of additive primes was a milestone in non-commutative geometry. The goal of the present paper is to classify groups.
Massive MIMO Wireless Networks: An Overview (2017)

Massive multiple-input-multiple-output (MIMO) systems use few hundred antennas to simultaneously serve large number of wireless broadband terminals. It has been incorporated into standards like long term evolution (LTE) and IEEE802.11 (Wi-Fi). Basically, the more the antennas, the better shall be the performance. Massive MIMO systems envision accurate beamforming and decoding with simpler and possibly linear algorithms. However, efficient signal processing techniques have to be used at both ends to overcome the signaling overhead complexity. There are few fundamental issues about massive MIMO networks that need to be better understood before their successful deployment. In this paper, we present a detailed review of massive MIMO homogeneous, and heterogeneous systems, highlighting key system components, pros, cons, and research directions. In addition, we emphasize the advantage of employing millimeter wave (mmWave) frequency in the beamforming, and precoding operations in single, and multi-tier massive MIMO systems.
Providencia vermicola sp. nov., isolated from infective juveniles of the entomopathogenic nematode Steinernema thermophilum (2006)

In the course of isolating bacteria from infective juveniles of the entomopathogenic nematode Steinernema thermophilum Ganguly & Singh, 2000, three isolates were obtained (OP1T, OP29 and VS3). On the basis of 16S rRNA gene sequence analysis and riboprint patterns, these three strains were identical to each other but distinct from the type strains of the five recognized species of the genus Providencia. Based on biochemical and genomic analysis and supported by the low (<35 %) DNA-DNA relatedness between strain OP1T and the type strain of its phylogenetically closest relative, Providencia rettgeri (99.5 % 16S rRNA gene sequence similarity), strain OP1T was considered to be sufficiently distinct from recognized Providencia species to warrant the description of a novel species. The name Providencia vermicola sp. nov. is proposed, with OP1T (= DSM 17385T = CIP 108829T) as the type strain.
Real-time auto white balancing using DWT-based multi-scale clustering (2006)

Auto white balancing (AWB) involves the process of making white colors to appear as white under different illuminants in digital imaging products such as digital still cameras. This paper presents a computationally efficient auto white balancing algorithm for real-time deployment in imaging products. The algorithm utilizes DWT (discrete wavelet transform) to perform multi-scale clustering (MSC), thus generating a computationally efficient implementation of the original MSC algorithm. The paper also discusses the steps taken to allow running this algorithm in real-time on a digital camera processor. The results of an actual implementation on the Texas Instruments TMS320DM320 processor are provided to illustrate the effectiveness of this algorithm in identifying an illuminant as compared to the widely used gray-world auto white balancing algorithm.
A new access control scheme for wide mixed-media PON system (1993)

A new access control scheme, referred to as framed pipeline polling is proposed for providing wide mixed-media services in a passive optical network (PON). The framed pipeline polling method realizes dynamic channel assignment capability and high channel utilization. An accommodation technique for both constant bit rate (CBR) and variable bit rate (VBR) services and/or for both symmetric and asymmetric services based on the proposed pipeline polling is discussed. The PON system with this proposed method can effectively provide wide mixed-media services.
Particle Candidates for Dark Matter (2001)

Some particle candidates for dark matter are reviewed in the light of recent experimental and theoretical developments. Models for massive neutrinos are discussed in the light of the recent atmospheric-neutrino data, and used to motivate comments on the plausibility of different solutions to the solar neutrino problem. Arguments are given that the lightest supersymmetric particle should be a neutralino χ, and accelerator and astrophysical constraints used to suggest that 50 GeV \lappeq m_χ\lappeq 600 GeV. Minimizing the fine tuning of the gauge hierarchy favours Ω_χh^2 \sim 0.1. The possibility of superheavy relic particles is mentioned, and candidates from string and $M$ theory are reviewed. Finally, the possibility of non-zero vacuum energy is discussed: its calculation is a great opportunity for a quantum theory of gravity, and the possibility that it is time dependent should not be forgotten.
Stability of radiopaque iodine-containing biomaterials (2002)

Stability tests have been performed on two typical iodine-containing radiopaque poly(methacrylate) copolymers. Material A is a terpolymer of methylmethacrylate (MMA), 2-hydroxyethyl methacrylate (HEMA) and 2-[4-iodobenzoyl]-oxo-ethylmethacrylate (4-IEMA); material B is a copolymer of MMA and 4-IEMA. Cylindrical specimens of material A were implanted subcutaneously and intraperitoneally in Wistar rats. The implants were retrieved after 2 years. Histology showed that the material was well-tolerated. Detailed analysis of the surface of the implants by electron spectroscopy for chemical analysis (ESCA) revealed that the material remained stable. No differences could be detected between the ESCA spectra of the explants, and those of the control specimens, which were from the same synthetic batch and which were stored in dry form during the entire experimental period. Material B was also stable upon irradiation with X-rays in vitro, even at high doses, compared to the clinical situation. Exposure of material B to gamma-radiation, however, was found to lead to structural degradation. This was evident from clear yellowing, and also from the ESCA spectra. The spectra revealed that material B deteriorates during gamma-irradiation through rupture of C-C and or C-O chemical bonds, not via C-I bond disruption. It can be concluded that iodine is tightly bound to these radiopaque biomaterials. This is important with regard to potential applications of these materials as implant biomaterials.
Soluble Aromatic Polyimides for Film and Coating Applications (1987)

Because of their toughness, flexibility and remarkable thermal stability, linear all-aromatic polyimides are excellent candidate film and coating materials for advanced electronic circuitry and wire coating applications. In past years, however, the inherent insolubility (1-2) of these polymers has somewhat limited their usefulness for electronic applications. The classic approach of incorporating aromatic pendant groups along the polymer backbone has been used successfully to improve the solubility of linear polyimides. (3-5) Variation in the isomeric points of attachment of bridging groups in the diamine monomers has also proved effective at enhancing solubility of polyimides in common organic solvents.(6) More recently, the combined effects of incorporating bulky (-CF3 and -SO2) groups, linking or bridging groups, and meta-linked diamines to reduce charge transfer complexing in aromatic polyimides and thereby facilitate solubility have been studied. (7) Other researchers have also reported the solubility of polyimides prepared with biphenyltetracarboxlic dianhydrides in a high-boiling solvent, N-methylpyrrolidone.(8-9)
Évaluation de la qualité des podomètres commerciaux (2006)

Contexte : Cette etude visait : 1) a evaluer la qualite des podometres promotionnels distribues a grande echelle dans les boites de cereales lors de l'edition 2004 de la campagne Canada en mouvement; et 2) a etablir une batterie de protocoles d'essai pour orienter le consensus futur autour des normes industrielles de qualite des podometres. Methode : Quinze compteurs de pas Special K* de Kellogg (« podometres K » ou « K »; fabriques pour Kellogg Canada par Sasco, Inc.) et neuf podometres Yamax (Yamax; Yamax Corporation de Tokyo, au Japon) ont ete testes sur neuf personnes. Nous leur avons fait subir: 1 ) un test de 20 pas; 2) un test en milieu conditionne sur tapis roulant a 80 m·min -1 (3 milles·h -1 ) et en automobile; et 3) un test de 24 heures en milieu naturel, par rapport aux resultats d'un accelerometre. Resultats: Cinquante-trois p. cent des podometres K ont reussi le test des 20 pas, contre 100 % des Yamax. Le pourcentage d'erreur absolu moyen du K durant la marche sur tapis roulant etait de 24,2±33,9, contre 3,9±6,6% pour le Yamax. Le K a decele 5,7 fois plus de non-pas que le Yamax lors du test en automobile. En milieu naturel, le pourcentage d'erreur absolu moyen par rapport a un accelerometre ActiGraph etait de 44,9±34,5 % pour le K et de 19,5±21,2 % pour le Yamax. Conclusions: Les podometres K sont trop imprecis pour etre juges acceptables. Nous suggerons d'employer pour la recherche des podometres: 1) dont le seuil de sensibilite est de 0,35 G; 2) pouvant deceler une erreur de ±1 pas selon le test des 20 pas (autrement dit, dont le taux d'erreur est inferieur a 5 %); 3) pouvant deceler une erreur de ±1 % la plupart du temps lors du test de marche sur tapis roulant a 80 m·min -1 (3 milles·h -1 ); et 4) pouvant denombrer les pas par jour dans une proportion de 10 % du resultat de l'ActiGraph au moins 60 % du temps, ou dans une proportion de 10 % des resultats du Yamax obtenus en milieu naturel.
Self-Assembled Monolayers of Branched Thiols and Disulfides on Gold:  Surface Coverage, Order and Chain Orientation (1998)

Self-assembly of several branched thiols possessing two long alkane chains and corresponding disulfides on gold surfaces are described. The self-assembled monolayers (SAMs) obtained were investigated by contact angle measurements, Fourier transform infrared spectroscopy (FT-IR), surface plasmon resonance (SPR), and atomic force microscopy (AFM). Monolayers formed by the disulfides were shown to be significantly thinner (SPR) and much more disordered (FT-IR, contact angles) than SAMs of the thiol counterparts. The presence of polar functional groups and complementary H-bond donors/acceptors in the alkane chains of branched disulfides was shown to assist the formation of better packed monolayers. Compared to SAMs of octadecanethiol, the branched thiols investigated in this study gave SAMs with a significantly reduced tilt angle, as seen in the FT-IR spectra. AFM revealed the lattice of one of the thiols on Au(111) with molecular (lattice) resolution showing a reduced area per molecule (as compared to octadecanethiol) which is consistent with a reduced tilt angle.
Automated segmentation of iris images using visible wavelength face images (2011)

Remote human identification using iris biometrics requires the development of automated algorithm of the robust segmentation of iris region pixels from visible face images. This paper presents a new automated iris segmentation framework for iris images acquired at-a-distance using visible imaging. The proposed approach achieves the segmentation of iris region pixels in two stages, i.e. (i) iris and sclera classification, and (ii) post-classification processing. Unlike the traditional edge-based segmentation approaches, the proposed approach simultaneously exploits the discriminative color features and localized Zernike moments to perform pixel-based classification. Rigorous experimental results presented in this paper confirm the usefulness of the proposed approach and achieve improvement of 42.4% in the average segmentation errors, on UBIRIS.v2 dataset, as compared to the previous approach.
Dephosphorylation of osteopontin and bone sialoprotein by osteoclastic tartrate-resistant acid phosphatase. Modulation of osteoclast adhesion in vitro. (1994)

The tartrate-resistant acid phosphatase (TRAP) of skeletal osteoclasts was found to partially dephosphorylate the bone matrix phosphoproteins osteopontin (OPN) and bone sialoprotein (BSP). TRAP also partially dephosphorylated metabolically [32P]PO4-labeled OPN as well as BSP, whereas comparable amounts of either alkaline phosphatase or prostatic acid phosphatase, at their respective pH optima, were ineffective, indicating a certain preference of TRAP for these phosphoprotein substrates. It has previously (Flores, M., Norgärd, M., Heinegård, D., Reinholt, F. P., and Andersson, G. (1992) Exp. Cell Res. 201, 526-530) been shown that osteoclasts bind to OPN as well as to BSP coated onto glass. We can now show that the partially dephosphorylated proteins no longer support osteoclast binding. These results indicate that the secretion of TRAP from osteoclasts into the resorption area could exert a regulatory influence on the attachment of the cells to the bone surface. This could imply roles in the development of ruffled borders and/or in the regulation of osteoclast motility on the bone surface.
On double wave discontinuities in fluids and plasmas (2016)

Simple waves and double waves as exact solutions of quasilinear hyperbolic equations in hydrodynamics may blow up, and, so, generally, there are points at which these solutions are violated at some definite instants of time. Finding the first instant of time for the violation of a simple wave solution is a known method, while this problem for the double waves is not a well defined and an easy task. Here, a two and a three dimensional double wave solutions are reviewed for some hydrodynamical systems to show that, for the 2-D case for some special solutions, one can find a local minimum for the critical time, while for some other solutions not. For the 3-D case, generically, there is no local minimum for the critical time, but at very special situations, the local minimum critical times may exist. Moreover, the dynamics of critical curves and points are briefly discussed.
BGP Route Reflection: An Alternative to Full Mesh Internal BGP (IBGP) (2006)

The Border Gateway Protocol (BGP) is an inter-autonomous system
routing protocol designed for TCP/IP internets. Typically, all BGP
speakers within a single AS must be fully meshed so that any external
routing information must be re-distributed to all other routers within
that Autonomous System (AS). This represents a serious scaling problem
that has been well documented with several alternatives proposed.
This document describes the use and design of a method known as route
reflection to alleviate the need for full mesh Internal BGP (IBGP).
This document obsoletes RFC 2796 and RFC 1966. [STANDARDS-TRACK]
Curve and surface interpolation using rational radial basis functions (1996)

This paper addresses the problem of reconstructing two-dimensional curves and three-dimensional surfaces from scattered, sparse measurements. We extend the rational Gaussian (RaG) functions introduced by Goshtasby (1993) to general rational radial basis functions and develop a method to compute the smoothness parameters for the shape model by considering the adjacency relation of the control points. Experimental results demonstrate substantial improvements over the original RaG-based method when the input data is sparse and the distribution of the control points is highly nonuniform.
Visual Processing Impairment and Risk of Motor Vehicle Crash Among Older Adults (1998)

Reduction in the useful field of view increases crash risk in older drivers. Given the relatively high prevalence of visual processing impairment among the elderly, visual dysfunction and eye disease deserve further examination as causes of motor vehicle crashes and injury.