gebhart/patrepeval huggingface dataset:
Performance characterization of image stabilization algorithms (2002)

This paper considers the characterization of three different image stabilization algorithms when used as a preprocessor for a computer vision application. These algorithms vary in computational complexity, accuracy, and performance. The first algorithm (developed by the Army Research Laboratory (ARL)) is capable of image alignment to an accuracy of one pixel. Algorithms 2 and 3 (developed by the University of Maryland) are capable of full subpixel stabilization with respect to translation, rotation, and scale. The evaluation tools incorporated include mean square error of the output data set and the overall performance of an automatic target acquisition (ATA) system (developed at ARL) that uses the algorithms as a front-end preprocessor. We show that for the ARL ATA application, extremely accurate subpixel stabilization is a requirement for proper operation. Based on experiments, we conclude that algorithm 3 performs significantly better than the other two algorithms.
A Blind Beam Tracking Scheme for Millimeter Wave Systems (2020)

Millimeter-wave is one of the technologies powering the new generation of wireless communication systems. To compensate the high path-loss, millimeter-wave devices need to use highly directional antennas. Consequently, beam misalignment causes strong performance degradation reducing the link throughput or even provoking a complete outage. Conventional solutions, e.g. IEEE 802.11ad, propose the usage of additional training sequences to track beam misalignment. These methods however introduce significant overhead especially in dynamic scenarios. In this paper we propose a beamforming scheme that can reduce this overhead. First, we propose an algorithm to design a codebook suitable for mobile scenarios. Secondly, we propose a blind beam tracking algorithm based on particle filter, which describes the angular position of the devices with a posterior density function constructed by particles. The proposed scheme reduces by more than 80% the overhead caused by additional training sequences.
Effect of optical feedback on the noise properties of vertical cavity surface emitting lasers (1997)

Noise properties of vertical cavity surface emitting lasers (VCSELs) subject to optical feedback are investigated via calculations of the relative intensity noise (RIN) and turn-on delay jitter for the device. It is shown that, despite their high facet reflectivities, VCSELs have a similar sensitivity to conventional edge emitting laser diodes towards optical feedback.
Investigations of products of copper electrode erosion in an AC plasmatron (2017)

The products of the erosion of a hollow copper electrode of an ac plasmatron operating in air have been examined. It has been shown using elemental analysis, IR spectroscopy, X-ray phase analysis, and differential thermal analysis that the main components of the erosion products are copper trihydroxide nitrate (II), copper oxide (II), copper oxide (I), and copper hydroxide carbonate (II).
Liquid Crystal Elastomer Waveguide Actuators (2019)

While most photomechanical materials developed to date have relied on free-space illumination to drive actuation, this strategy fails when direct line-of-site access is precluded. In this study, waveguided light is harnessed by liquid crystal elastomer (LCE) nanocomposites to drive actuation. Using photo-chemical reduction of gold salts to plasmonic nanoparticles, prescription of photoresponsive regions within fibers of mono-domain LCEs is demonstrated with control over both the location along the fiber axis, as well as in the azimuthal direction. Due to localized photothermal heating provided by plasmonic absorption of waveguided light and resulting inhomogeneous thermally induced deformation of the LCE, reversible bending along multiple axes is demonstrated.
Monster, P.I.: Validation Evidence for an Assessment of Adolescent Language That Assesses Vocabulary Knowledge, Morphological Knowledge, and Syntactical Awareness (2020)

Assessment of language skills for upper elementary and middle schoolers is important due to the strong link between language and reading comprehension. Yet, currently few practical, reliable, valid, and instructionally informative assessments of language exist. This study provides validation evidence for Monster, P.I., which is a gamified, standardized, computer-adaptive assessment (CAT) of language for fifth to eighth grade students. Creating Monster, P.I. involved an assessment of the dimensionality of morphology and vocabulary and an assessment of syntax. Results using multiple-group item response theory (IRT) with 3,214 fifth through eighth graders indicated morphology and vocabulary were best assessed via bifactor models and syntax unidimensionally. Therefore, Monster, P.I. provides scores on three component areas of language (multidimensional morphology and vocabulary and unidimensional syntax) with the goal of informing instruction. Validity results also suggest that Monster, P.I. scores show moderate correlations with each other and with standardized reading vocabulary and reading comprehension assessments. Furthermore, hierarchical regression results suggest an important link between Monster, P.I. and standardized reading comprehension, explaining between 56% and 75% of the variance. Such results indicate that Monster, P.I. can provide meaningful understandings of language performance which can guide instruction that can impact reading comprehension performance.
EFECTO AGUDO DEL ENTRENAMIENTO MÁXIMO DE FLEXIBILIDAD SOBRE LA FUERZA MUSCULAR Y LOS NIVELES DE HIDROXIPROLINA URINARIA EN JÓVENES ADULTOS (2011)

El objetivo es investigar el efecto agudo del entrenamiento máximo de flexibilidad sobre fuerza muscular y los nivelesde hidroxiprolina (HP) en adultos jóvenes. Treinta varones fueron divididos en grupo control (GC, n = 15; 16,87± 1,19 años) y grupo de entrenamiento máximo de flexibilidad (GF: No = 15, 17,27 ± 1,28 años). Se midieron lasconcentraciones de HP a través del análisis de orina. La fuerza muscular se evaluó mediante un protocolo de dinamometríadigital, con la ejecución de una repetición máxima de extensión de la columna lumbar (ECL). Después,el GF fue sometido a una sesión de entrenamiento máximo de flexibilidad, consistente de flexión del tronco en tresseries con un tiempo de trabajo de 15 segundos. El GC no realizó ningún tipo de esfuerzo físico. Después de la sesión,se llevó a cabo una nueva evaluación de la fuerza muscular y un análisis de orina, realizados ambos 24 horasdespués de la primera. El ANOVA mostró reducción significativa en los valores de ECL (?% = -9,42, p = 0,007) deGF, tras la sesión de flexión. En las comparaciones entre grupos, después de la intervención se encontraron valoresen la fuerza muscular significativamente menores en el GF (?% = -8,18, p = 0,028), en comparación con el GC. Enlas concentraciones de HP no hubo cambios significativos. El protocolo de entrenamiento máximo de flexibilidadcausó una reducción significativa en la fuerza muscular, sin embargo, no causó ninguna diferencia significativa enlas concentraciones de HP.
Interferometric interrogation of in-fiber Bragg grating sensors without mechanical path length scanning (2001)

We report the interrogation of a fiber Bragg grating (FBG) using an interferometer with a tilted mirror such that the optical path difference is a function of position on an array detector. Absolute measurements of mean resonant wavelength from the phase of the analytic signal of the spatial interferogram are determined, and a technique based on using a reference laser to compensate for performance degrading effects otherwise associated with spatially scanned interferometers is introduced. These measurements are not critically dependent on the accurate location of zero phase position. We have applied the technique to the absolute measurement of temperature-induced shifts in the grating resonant wavelength. A resolution of 0.025 nm for a spatially scanned optical path delay of only 200 /spl mu/m was achieved. The technique has the potential for higher resolutions and for multiplexing.
Quaternion ESPRIT for direction finding with a polarization sentive array (2008)

The problem of direction of arrival (DOA) estimation with a crossed-dipole array is addressed within the quaternionic framework, and a new ESPRIT variant, termed as quaternion-ESPRIT (Q-ESPRIT), is proposed. The proposed algorithm arranges the recorded signals into a quarternion model, and estimates the signal subspace of an array of translational invariance structure via quaternionic low-rank approximation. Then, Q-ESPRIT exploits the underlying rotational invariance between signal subspaces of different sub-arrays with quaternionic matrix operations to obtain the ultimate DOA estimates. Simulations show that Q-ESPRIT significantly outperforms its conventional counterpart in difficult situations with short data length, low signal-to-noise ratio, or unknown model errors.
P55 Remote Ischaemic Preconditioning Reduces Cardiac Biomarkers During Vascular Surgery (2019)

Abstract Objectives The primary aim of this study was to evaluate the effects of remote ischaemic preconditioning (RIPC) on preventing the leakage of cardiac damage biomarkers in patients undergoing vascular surgery. Methods Randomised, sham-controlled, double-blinded, single-centre study has been carried out. In recruitment patients undergoing open abdominal aortic aneurysm repair, surgical lower limb revascularisation surgery or carotid endarterectomy were enrolled non-consecutively. The RIPC protocol consisting of 4 cycles of 5 minutes of ischaemia, followed by 5 minutes of reperfusion, was applied. A RIPC or a sham procedure was performed noninvasively at the same time as the patient was prepared for anaesthesia. High sensitivity troponin T level was measured preoperatively as well as 2, 8 and 24 hours after surgery and pro b-type natriuretic peptide was measured preoperatively and 24 hours after surgery. Results There was significantly higher leakage of high sensitivity troponin T (peak change median 2 ng/L, IQR 0.9–6.2 ng/L vs 0.6 ng/L, IQR 0.7–2.1 ng/L, p = 0.0002) and pro b-type natriuretic peptide (change median 144 pg/mL, IQR 17–318 pg/mL vs 51 pg/mL, IQR 12–196 pg/mL, p = 0.02) in the sham group compared to the RIPC group. Conclusion RIPC reduces the leakage of high sensitivity troponin T and pro b-type natriuretic peptide. Therefore, it may reduce cardiac damage in patients undergoing non-cardiac vascular surgery. The clinical significance of RIPC has to be evaluated in larger studies excluding the factors known to influence its effect.
Performance of Cu‐Fe‐based oxygen carrier in a CLC process based on fixed bed reactors (2017)

Abstract To explore the application of chemical‐looping combustion (CLC) to the distributed medium‐ small‐scale hot water and steam gas‐fueled boilers, a CLC process based on two fixed bed reactors (FBRs) has been proposed. A Cu‐Fe‐based oxygen carrier (OC) was studied to meet the requirements for this process. Results showed that Cu30‐Fe50/Al20 was exothermic both in the reduction step and in the oxidation step, and showed a quite large operating temperature window of 600–900°C. At the lower temperature side, it showed good low temperature reactivity, and at the higher temperature side, it showed strong resistance to carbon deposition, agglomeration, and sintering. © 2017 Society of Chemical Industry and John Wiley &amp; Sons, Ltd.
A Permutation Approach for Selecting the Penalty Parameter in Penalized\n Model Selection (2014)

We describe a simple, efficient, permutation based procedure for selecting\nthe penalty parameter in the LASSO. The procedure, which is intended for\napplications where variable selection is the primary focus, can be applied in a\nvariety of structural settings, including generalized linear models. We briefly\ndiscuss connections between permutation selection and existing theory for the\nLASSO. In addition, we present a simulation study and an analysis of three real\ndata sets in which permutation selection is compared with cross-validation\n(CV), the Bayesian information criterion (BIC), and a selection method based on\nrecently developed testing procedures for the LASSO.\n
EFFECTS OF INTERVAL TRAINING ON MUSCLE PERFORMANCE AFTER BONE MARROW TRANSPLANT (BMT) (1989)

Physical Therapy Program, Univ of Michigan-Flint, Flint, Ml and Dept's of Internal Medicine and Exercise Physiology, The Ohio State Univ, Columbus, OH.
Passivity of Chromium and Stainless Steel In Hydrofluoric Acid (1964)

The anodic polarization of chromium and 18Cr-8Ni stainless steel has been investigated in 2 to 48 percent hydrofluoric acid, 40 percent sulfuric acid, and in a solution containing 5 percent hydrofluoric acid and 40 percent sulfuric acid. Chromium can be anodically protected in hydrofluoric acid. The corrosion rate of stainless steel in hydrofluoric acid can be reduced by anodic protection but less than is possible in sulfuric acid. The dissolution rate of passive stainless steel in 5 percent hydrofluoric acid plus 40 percent sulfuric acid is similar to the rate in 5 percent hydrofluoric acid. The breakdown of the passive film on stainless steel probably is accelerated by the formation of stable ferric fluoride complex ions.
Carving research slices out of your production networks with OpenFlow (2010)

No abstract available.
Molecular Basis of Functional Effects of Phosphorylation of the C-Terminal Domain of the Rabies Virus P Protein (2022)

The rabies virus (RABV) phosphoprotein (P protein) is expressed as several isoforms, which differ in nucleocytoplasmic localization and microtubule (MT) association, mediated by several sequences, including nuclear localization (NLS) and export (NES) sequences. This appears to underpin a functional diversity enabling multiple functions in viral replication and modulation of host biology. Mechanisms regulating trafficking are poorly defined, but phosphorylation by protein kinase C (PKC) in the P protein C-terminal domain (P<sub>CTD</sub>) regulates nuclear trafficking, mediated by P<sub>CTD</sub>-localized NLS/NES sequences, indicating that phosphorylation contributes to functional diversity. The molecular mechanism underlying the effects of PKC, and potential roles in regulating other host-cell interactions are unresolved. Here, we assess effects of phosphorylation on the P3 isoform, which differs from longer isoforms through an ability to localize to the nucleus and associate with MTs, which are associated with antagonism of interferon (IFN) signaling. We find that phosphomimetic mutation of the PKC site S210 inhibits nuclear accumulation and MT association/bundling. Structural analysis indicated that phosphomimetic mutation induces no significant structural change to the NLS/NES but results in the side chain of N226 switching its interactions from E228, within the NES, to E210. Intriguingly, N226 is the sole substituted residue between the P<sub>CTD</sub> of the pathogenic IFN-resistant RABV strain Nishigahara and a derivative attenuated IFN-sensitive strain Ni-CE, inhibiting P3 nuclear localization and MT association. Thus, S210 phosphorylation appears to impact on N226/E228 to regulate P protein localization, with N226 mutation in Ni-CE mimicking a constitutively phosphorylated state resulting in IFN sensitivity and attenuation. <b>IMPORTANCE</b> Rabies virus P protein is a multifunctional protein with critical roles in replication and manipulation of host-cell processes, including subversion of immunity. This functional diversity involves interactions of several P protein isoforms with the cell nucleus and microtubules. Previous studies showed that phosphorylation of the P protein C-terminal domain (P<sub>CTD</sub>) at S210, near nuclear trafficking sequences, regulates nucleocytoplasmic localization, indicating key roles in functional diversity. The molecular mechanisms of this regulation have remained unknown. Here, we show that phosphomimetic mutation of S210 regulates nuclear localization and MT association. This regulation does not appear to result from disrupted P<sub>CTD</sub> structure, but rather from a switch of specific side chain interactions of N226. Intriguingly, N226 was previously implicated in P protein nuclear localization/MT association, immune evasion, and RABV pathogenesis, through undefined mechanisms. Our data indicate that the S210-N226 interface is a key regulator of virus-host interactions, which is significant for pathogenesis.
Correction: Differentially Expressed Genes in Bordetella pertussis Strains Belonging to a Lineage Which Recently Spread Globally (2014)

Pertussis is a highly contagious, acute respiratory disease in humans caused by the Gram-negative pathogen Bordetella pertussis. Pertussis has resurged in the face of intensive vaccination and this has coincided with the emergence of strains carrying a particular allele for the pertussis toxin promoter, ptxP3, which is associated with higher levels of pertussis toxin (Ptx) production. Within 10 to 20 years, ptxP3 strains have nearly completely replaced the previously dominant ptxP1 strains resulting in a worldwide selective sweep. In order to identify B. pertussis genes associated with the selective sweep, we compared the expression of genes in ptxP1 and ptxP3 strains that are under control of the Bordetella master virulence regulatory locus (bvgASR). The BvgAS proteins comprise a two component sensory transduction system which is regulated by temperature, nicotinic acid and sulfate. By increasing the sulfate concentration, it is possible to change the phase of B. pertussis from virulent to avirulent. Until recently, the only distinctive phenotype of ptxP3 strains was a higher Ptx production. Here we identify additional phenotypic differences between ptxP1 and ptxP3 strains which may have contributed to its global spread by comparing global transcriptional responses under sulfate-modulating conditions. We show that ptxP3 strains are less sensitive to sulfate-mediated gene suppression, resulting in an increased production of the vaccine antigens pertactin (Prn) and Ptx and a number of other virulence genes, including a type III secretion toxin, Vag8, a protein involved in complement resistance, and lpxE involved in lipid A modification. Furthermore, enhanced expression of the vaccine antigens Ptx and Prn by ptxP3 strains was confirmed at the protein level. Identification of genes differentially expressed between ptxP1 and ptxP3 strains may elucidate how B. pertussis has adapted to vaccination and allow the improvement of pertussis vaccines by identifying novel vaccine candidates.
Proton MR Spectroscopy in Coats Disease (1999)

Literature Abstracts: Literature Abstracts-The American Journal of Neuroradiology, 1997: Clinicoanatomic and Pathologic Correlations: PDF Only
Die Rolle des immunregulatorischen Zytokins IL-27 bei der DSS Kolitis (2007)

Hintergrund: IL-27 ist ein neues Mitglied der Familie IL-12 verwandter Zytokine, welches primär von aktivierten Makrophagen und dendritischen Zellen gebildet wird. Erste funktionelle Untersuchungen zeigten zunächst, dass IL-27 die Proliferation naïver CD4+ T Zellen induziert und synergistisch mit IL-12 die Ausprägung von TH1 Antworten moduliert. Weitergehende Arbeiten der letzen Jahre identifizierten IL-27 jedoch als wichtiges regulatorisches Zytokin, das die Entstehung proinflammatorischer TH17 Zellen, sowie Funktionen des innaten Immunsystems moduliert. Da sich interessanterweise zeigte, dass die beiden IL-27 Untereinheiten EBI3 and p28 in der entzündeten CED Mukosa offenbar überexprimiert werden, haben wir in der vorliegenden Studie die Rolle von IL-27 für die Entstehung der murinen DSS Kolitis analysiert.
Iron(III)-Chelating Resins. IX. Antibacterial Activity of a Water-Insoluble Iron(III)-Chelating Resin (1994)

Antibacterial activity of a water-insoluble iron(III)-chelating resin with covalently bonded 3-hydroxy-2-methyl-4(1H)-pyridinone (HMP) groups was evaluated in a brain heart infusion (BHI) medium. The activity of the resin against Escherichia coli was lower than that of soluble HMP iron(III) chelators, whereas against Listeria inocua, an activity approximately equal to those of the soluble chelators was found. It was observed that the growth of E. coli and L. inocua was reduced by increasing the amounts of the resin from 2 to 40 mg of resin/mL of medium. Inhibition of bacterial growth in the presence of the resin (10 mg/mL) was abolished by addition of ferric ion to the medium, indicating that the growth of E. coli and L. inocua was dependent on the available iron in the medium. Reducing the iron concentration in the medium from 14.2 to 0.16 microM (by action of the resin) resulted in a decrease in the growth response from 100% to 19% for E. coli and from 100% to 10% for L. inocua. In addition, the influence of citrate was studied, but only small effects of citrate supplementation on the growth of bacteria and on the antibacterial activity of the resin were observed.
[Role of ultrasonography in the control of patients receiving perioperative total parenteral nutrition]. (1999)

On the basis of personal experience and literature, this study has been carried out in order to clarify the impact of ultrasonography on the diagnosis and prevention of hepatobiliary complications Total Parenteral Nutrition (TPN)-related.Between April 1995-April 1997 in the Department of General Surgery-University of Catanzaro, 18 adult patients submitted to major thoracic or abdominal surgery, underwent to TPN for perioperative time (range: 9-55 days). In these patients ultrasonography was performed at pre-established days in pre- and postoperative time in order to diagnose precociously the possibility of hepatobiliary complications.Ultrasonography showed: 3 cases of hepatic steatosis, 5 cases of steatosis and gallbladder biliary sludge, 2 cases of gallbladder biliary sludge alone, 1 case of gallbladder biliary sludge with microlithiasis, 1 case of acute acalculous cholecystitis. The other 6 patients presented only little laboratory tests alterations, but normal ultrasonographic findings.Therefore it is underlined the importance of systematic ultrasonographic follow-up of patients on TPN as a non invasive method in the early diagnosis of hepatobiliary complications TPN-related. The good compliance of the patients to this instrumental investigation and the not excessive increase of their management's costs are also underlined.
Double Addition of Fluorosulfuric Acid to Norbornadiene and Quadricyclane (1975)

The same mixture of exo-2-exo-5- (11) and endo-2-exo-5-norbornanediyl (12) bisfluorosulfates is formed when norbornadiene or quadricyclane is treated with an excess of HSO3F in SO2ClF at −100 °. This observation is rationalized by a mechanism that does not involve the 5-norbornen-2-yl ⇄ nortricyclyl cation rearrangement. Classical 5-substituted 2-norbornyl cations are possible intermediates.