gebhart/patrepeval huggingface dataset:
A new thermographic procedure for the non-destructive evaluation of RSW joints (2019)

Resistance Spot Welding is one of most used method to weld two sheet material thanks to its reliability and rapid production that makes it economical. The quality of the produced joints is related to the process parameters such as current, time, electrode pressure and surface condition and generally, destructive tensile tests are used to investigate the effect of each parameter on the quality of joints. However, these latter are time consuming and do not allow for a complete check (100%) of joints. In this work, a non-destructive thermographic technique and a new procedure was used to assess the quality of joints. In particular, different steel joints were obtained by varying two process parameters: current and cycle time. These joints were tested with the pulsed thermography technique adopting a transmission set-up. Thermographic data were acquired by means of a cooled infrared camera capable to acquire thermographic sequences at 400 Hz with a geometrical resolution equal to 0.062 mm/pixel. A flash lamp has been used to produce a thermal pulse of 3000 J with duration 5 ms. The thermal signal was investigated in the time domain with the aim to obtain different features related to the investigated process parameters. Proposed approach allows for detecting the typical defects that affect the joints such as stick and expulsion of material.
Temperature and Volume Effects on Local Segmental Relaxation in Poly(vinyl acetate) (2003)

Dielectric data on the local segmental relaxation of amorphous poly(vinyl acetate) (PVAc) are analyzed. At atmospheric pressure, the fragility (Tg-normalized temperature dependence) is invariant to molecular weight. Since the fragility is also independent of pressure, the combined temperature and pressure dependences of the relaxation times can be analyzed using the Avramov model of structural relaxation. This entropy model gives a satisfactory description of the data and yields an expression for the pressure dependence of the dynamic glass transition identical to the empirical Andersson equation. Although in principle the Avramov model parameters can be deduced from measurable thermodynamic properties of the glass-former, the results are at odds with the values obtained from fitting the relaxation times for PVAc. Using pressure−volume−temperature data, the respective contributions of thermal energy and volume to the local dynamics in PVAc were assessed. Specifically, we calculate the ratio of the isochoric to isobaric apparent activation energies. The obtained value, ≈0.6 at atmospheric pressure just above Tg, indicates that temperature and volume both govern to a significant degree the relaxation times. This result is supported by a comparison of the relative magnitude of the isobaric and isochronal thermal expansion coefficients. These properties of PVAc are similar to those of other nonassociated polymers and glass-forming liquids and can be shown to be weakly correlated with the degree of super-Arrhenius behavior.
Preparing University of Mississippi graduate students for careers in acoustics (2015)

The acoustics program at the University of Mississippi originated in the Physics Department and is still closely associated with physics. The physics department requires all students teach two semesters of laboratory under the supervision of a laboratory physicist. The required physics curriculum is extensive so that the acoustics students only receive two semesters of acoustics courses. This leads to careful course design so that our students are broadly literate in acoustics. The necessary compression of class work means that speaking and writing skills are taught to the student by their research advisor in preparing conference talks, written papers, and dissertations.
Isomer shift in TiFe and a calibration of theFe57isomer shift (1975)

The isomer shift for TiFe has been measured to be -0.145 \ifmmode\pm\else\textpm\fi{} 0.007 mm ${\mathrm{sec}}^{\ensuremath{-}1}$. This measurement together with charge-density calculations for TiFe, Fe, ${\mathrm{Fe}}^{2+}$, and ${\mathrm{Fe}}^{3+}$ yields a value for the 14.4-keV $^{57}\mathrm{Fe}$ calibration constant of $(\ensuremath{-}0.19\ifmmode\pm\else\textpm\fi{}0.01){a}_{0}^{3}$ mm ${\mathrm{sec}}^{\ensuremath{-}1}$.
Determining Beryllium in Drinking Water by Graphite Furnace Atomic Absorption Spectroscopy (1993)

A direct graphite furnace atomic absorption spectroscopy method for the analysis of beryllium in drinking water has been derived from a method for determining beryllium in urine. Ammonium phosphomolybdate and ascorbic acid were employed as matrix modifiers. The matrix modifiers successfully eliminated common chemical interferences in water samples analyzed for beryllium content, as well as interferences encountered during jar testing of beryllium removal by alum coagulation. The method proved to be a simple, accurate, and precise alternative to the method of standard additions. Method detection limit was 0.03 μg/L, with a linear calibration range of 0–6 μg/L.
Ligandstruktur und Komplexierung, L. Ionenselektive Farbstoffkronenether (1980)

Abstract Neue Farbstoffe wurden synthetisiert, die ein ionenselektives Kronenethersystem enthalten, bei dessen Komplexierung mit Kationen der Chromophor im Grund‐ und angeregten Zustand elektronisch unterschiedlich beeinflußt wird. Verschiedene Ionentypen rufen verschiedene Farbänderungen hervor. Außer cyclischen Kronenethern mit Chromophoren vom Typ der Azofarbstoffe ( 1 – 3, 8a, b, 22, 24 ), des Naphtholblaus ( 10 ), des Phenolblaus ( 11 ), der Stilbenfarbstoffe ( 14a, b ), der (Mero‐)Cyanine ( 16, 17a, b ) und des Königschen Salzes ( 19, 20 ) werden auch an offenkettige Oligoethylenglycolether‐Ketten gebundene Chromophore ( 9, 18 ) beschrieben. Die teilweise beträchtlichen Änderungen der UV/vis‐Absorption einiger Farbstoffe mit Komplexbeteiligung des Auxochroms wie des Antiauxochroms werden erörtert.
Cortical Surface Shape Analysis Based on Spherical Wavelets (2007)

In vivo quantification of neuroanatomical shape variations is possible due to recent advances in medical imaging and has proven useful in the study of neuropathology and neurodevelopment. In this paper, we apply a spherical wavelet transformation to extract shape features of cortical surfaces reconstructed from magnetic resonance images (MRIs) of a set of subjects. The spherical wavelet transformation can characterize the underlying functions in a local fashion in both space and frequency, in contrast to spherical harmonics that have a global basis set. We perform principal component analysis (PCA) on these wavelet shape features to study patterns of shape variation within normal population from coarse to fine resolution. In addition, we study the development of cortical folding in newborns using the Gompertz model in the wavelet domain, which allows us to characterize the order of development of large-scale and finer folding patterns independently. Given a limited amount of training data, we use a regularization framework to estimate the parameters of the Gompertz model to improve the prediction performance on new data. We develop an efficient method to estimate this regularized Gompertz model based on the Broyden-Fletcher-Goldfarb-Shannon (BFGS) approximation. Promising results are presented using both PCA and the folding development model in the wavelet domain. The cortical folding development model provides quantitative anatomic information regarding macroscopic cortical folding development and may be of potential use as a biomarker for early diagnosis of neurologic deficits in newborns.
Stochastic modeling of integrated power system coupled to hydrodynamics in the all-electric ship (2008)

In the paper, we model the integrated power system (IPS) of a typical destroyer ship coupled to hydrodynamics. This IPS is composed of a 21 MW, 3-phase synchronous generator supplying electric power to 4160 V AC bus and to a 19 MW, 15-phase induction motor driven by an indirect rotor field oriented control for the motor torque. Moreover, stochastic responses are examined when there exists a variation in the induction motorpsilas rotor resistance and a disturbance from the slowly-varying added resistance, derived from a Pierson and Moskowitz sea spectrum.
Fuzzy control of a single-link flexible robotic manipulator using assumed mode method (2016)

In this paper, the dynamic model of a singlelink flexible robotic manipulator developed with the assumed mode method (AMM) is investigated. Subsequently, we obtain a discretized model for the flexible manipulator system. Base on the dynamic model, fuzzy control are studied to achieve the control objectives. Aiming at ensuring stability rigorously, the closed-loop system is uniform ultimate boundedness (UUB) via the Lyapunovs stability. By appropriately choosing design parameters, the state of the system is proven to converge to zero with a small neighborhood. Eventually, Simulations for the flexible manipulator system are given to verify the effectiveness of the proposed fuzzy control strategy, and the final performance is compared with that of proportional derivative (PD) control strategy. The feasibility of the proposed control is verified.
Using microbial fatty acids to quantify, characterize and compare biofilm and suspended microbial populations in wastewater treatment systems (1998)

Spectra of microbial fatty acid methyl esters were used to assess the influence of pH on the biofilm and suspended biomass populations within bench scale moving bed bioreactors treating bleached kraft mill effluent. The fatty acid spectral data were reduced by logcontrast canonical component analysis. The first canonical component differentiated biofilm from suspended populations and the second two appeared to indicate an influence of pH on microbial ecology. Thus, the biofilm and suspended microbial communities were distinct, as were the populations acclimated at pH 6 and pH 8. Experimental data for total organic carbon removal suggested that the more recalcitrant fraction of the influent was consumed by the slower growing, high SRT biofilm fraction of the biomass. Since the biofilm ecology was sensitive to pH within typical pH operating limits of full-scale systems, tighter pH control might improve treatment reliability in the event of process transients.
Modélisation des déformations des pièces de bois au séchage et influence de la structure interne de l'arbre (1995)

International audience
The influence of temperature and surface conditions on surface absorptivity in laser surface treatment (2000)

A one-dimensional, transient, inverse heat conduction problem is implemented to investigate the influence of temperature and surface conditions on surface absorptivity in the laser surface heating process. Analysis includes the utilization of the conjugate gradient method (CGM), with temperatures measured near the heated surface. To increase efficiency and accuracy of the calculation, the result retrieved from the least-square method is used as an initial guess for the CGM. Results show that absorptivity decreases when the temperature exceeds a certain value. This decrease is related to structural transformation during the temperature rise. As the surface temperature nears the melting point, the decreasing trend inverts and absorptivity increases. This final abrupt rise is caused by the phase transformation from order to disorder. Additionally, absorptivity is related to surface conditions such as absorption-enhancing coatings and surface roughness.
Key Proteins Involved in Spheroid Formation and Angiogenesis in Endothelial Cells After Long-Term Exposure to Simulated Microgravity (2018)

These results show that a prolonged RPM-exposure of ECs induced TS and MCS formation. The factors VEGF, NGAL, IL-6, IL-8, MCP-1, VCAM-1, ICAM-1, fibronectin and RANTES seem to be affected when gravity is omitted.
Rheological properties of mammalian cell culture suspensions: Hybridoma and HeLa cell lines (1993)

Data on viscous (eta') and elastic (eta'') components of the complex viscosity versus oscillatory angular frequency (0.01 to 4.0 rad/s) with increasing strains were obtained for hybridoma cell (62'D3) and HeLa cell (S3) suspensions in PBS at 0.9 (mL/mL) cell volume fraction using a Weissenberg rheogoniometer equipped with two parallel plate geometry at ambient temperature. Both cell suspensions exhibited shear thinning behavior. From the measured viscoelastic properties, the yield stress was calculated. Hybridoma cell suspension (15 microm as the mean diameter of cells) showed the yield stress at 550 dyne/cm(2) that was 1.8 times higher than the value of HeLa cell suspension (22 microm mean diameter) as measured at the oscillatory angular frequency, 4.0 rad/s. The apparent viscosities of HeLa cell suspension at four concentrations and varying steady shear rate were also determined using the Brookfield rotational viscometer. The yield stress to steady shear test was about 130 dyne/cm(2) for HeLa cell suspension at 0.9 (mL/mL) cell volume fraction. The apparent viscosity was in the range about 1 approximately 1000 Poise depending on the cell concentration and shear rate applied. A modified semiempirical Mooney equation, eta = eta(0) exp[K gamma(.)(-beta)phi(c)(1 - K'' sigmaphi(c) /D)] was derived based on the cell concentration, the cell morphology, and the steady shear rate. The beta, shear rate index, was estimated as 0.159 in the range of shear rate, 0.16 to 22.1 s(-1), for the cell volume fractions from 0.6 to 0.9 (mL/mL). In this study, the methods of determining the shear sensitivity and the viscous and the elastic components of mammalian cell suspensions are described under the steady shear field.
Towards content-based audio fragment authentication (2011)

Audio authentication is a technique to protect the integrity and originality of audio signals. Due to the long duration, it is often desirable to authenticate only a segment of audio signal. To the authors' knowledge, this important issue has not been seriously researched so far. In this paper, a novel authentication algorithm is proposed for the purpose of audio fragment authentication. SIFT descriptor originated from computer vision field is introduced and calculated on audio spectrogram to accomplish the tasks of fragment alignment, time-domain blocking, cropping and inserting identification etc. Experiments show reliable discrimination between admissible and malicious manipulations, precise tamper localization and classification.
Do Tight Junction Structure and Function Play a Role in the Acid Resistance of Barrett’s Esophagus? (2007)

Barrett’s esophagus (BE) is a lesion characterized by specialized columnar epithelium lining the distal esophagus. It develops in subjects with acid reflux disease as replacement for destroyed esophageal stratified squamous epithelium (SqE) – presumably because it is more acid resistant than SqE. How BE resists acid injury is complex but one means may involve alteration in the structure and function of its tight junctions. To address this question, expression profiles were performed for 21 claudin genes by quantitative RT-PCR and highly expressed claudin proteins immunolocalized by fluorescence microscopy on endoscopic biopsies from BE and from healthy SqE from subjects without esophageal disease. The results showed that all 21 claudins were expressed in BE while 19 claudins were expressed in SqE. Further, claudins 3, 4, 12, 15, 18 and 23 were overexpressed in BE compared to SqE, and claudin 18 notable for being both the most highly expressed in BE and absent in SqE. Immunolocalization studies in BE reveled that several claudins were localized to the tight junctions including 4, 7, 8, 10, 15, and, importantly, 18. Given the uniqueness of claudin 18 in BE, this claudin was expressed in MDCK II cells and shown to selectively increase junctional resistance to cations (Na+) compared to standard MDCK II cells. These results suggest that the alterations in tight junction structure and function in BE is one means for its greater acid resistance than SqE (Support: NIH grants DK036013, DK063669 and DK45134).
The NIST SPIDER, A robot crane (1992)

The Robot Systems Division of the National Institute of Standards and Technology has been experimenting for several years with new concepts for robot cranes. These concepts utilize the basic idea of the Stewart Platform parallel link manipulator. The unique feature of the NIST approach is to use cables as the parallel links and to use winches as the actuators. So long as the cables are all in tension, the load is kinematically constrained, and the cables resist perturbing forces and moments with equal stiffness to both positive and negative loads. The result is that the suspended load is constrained with a mechanical stiffness determined by the elasticity of the cables, the suspended weight, and the geometry of the mechanism. Based on these concepts, a revolutionary new type of robot crane, the NIST SPIDER (Stewart Platform Instrumented Drive Environmental Robot) has been developed that can control the position, velocity, and force of tools and heavy machinery in all six degrees of freedom (<i>x, y, z</i>, roll, pitch, and yaw). Depending on what is suspended from its work platform, the SPIDER can perform a variety of tasks. Examples are: cutting, excavating and grading, shaping and finishing, lifting and positioning. A 6 m version of the SPIDER has been built and critical performance characteristics analyzed.
Deltagande eller Delaktighet? : Barn och ungas diskursiva position i Film i Värmlands verksamhet (2013)

Deltagande eller Delaktighet? : Barn och ungas diskursiva position i Film i Varmlands verksamhet
Ensuring quality of service for image transmission: hybrid loss protection (2004)

We present hybrid loss protection as a new channel coding and packetization scheme for image transmission over nonprioritized lossy packet networks. The scheme employs an interleaver-based structure, and attempts to maximize the expected peak signal-to-noise ratio (PSNR) at the receiver given the constraint that the probability of failure, i.e., the probability that the PSNR of the decoded image is below a given threshold, is upper-bounded by a user-defined value. A new code-allocation algorithm is proposed, which employs Gilbert-Elliot modeling of the network statistics. Experimental results are provided in the case of transmission of images encoded by SPIHT and JPEG 2000 over a wireline, as well as a wireless UMTS-based Internet connection.
COCA (1998)

Coordination poticies vary from collaboration to collaboration and are even subject to evolution in different phases of the same co~aboration. It is titi for co~aborative systems to be flexible enough to accommodate changes to the coordination poficies during development and the Kietime of the coHaboration.
The importance of communication in the practice (2022)

James Thorpe explains why good communication within the practice is essential in ensuring patients receive safe care and may also reduce the likelihood of patient complaints and claims
ChemInform Abstract: SYNTH. VON 10ALPHA‐HYDROXY‐PROSTAGLANDINEN (1973)

Abstract Das J od‐lacton (I) liefert die Hydroxy‐acetate (IIa) und (IIb), die zum Diol (II hydrolysiert werden.
Cardiac Markers for Myocardial Infarction (2002)

Blood testing for biomarkers of myocardial injury plays an increasingly important role for the evaluation, diagnosis, and triage of patients with chest pain. The guidelines for the diagnosis of myocardial infarction (MI) have recently changed and prominently incorporate the results of cardiac marker testing in the clinical definition of MI. We review these updated guidelines for MI definition as it pertains to cardiac biomarker testing and further compare the differing biology and release kinetics of clinically relevant biomarkers. Finally, we define the contemporary use of cardiac biomarker testing for patients with chest pain, including appropriate integration of point-of-care testing into day-to-day clinical use.
Modelling and simulation of edoxaban exposure and response relationships in patients with atrial fibrillation (2012)

Edoxaban is a novel, orally available, highly specific direct inhibitor of factor Xa and is currently being developed for the treatment and prevention of venous thromboembolism and prevention of stroke and systemic embolism in patients with non-valvular atrial fibrillation (NVAF). The objectives of the present analyses were to characterise edoxaban population pharmacokinetics (PPK) and identify potential intrinsic and extrinsic factors affecting variability in edoxaban exposure, determine if there are relationships between edoxaban pharmacokinetics or biomarkers and the risk of bleeding in patients with NVAF using an exposure-response model, and to use the PPK and exposure-response model to support dose selection for a phase III trial of edoxaban in patients with NVAF. PPK analysis of data from 1,281 edoxaban-dosed subjects with intrinsic factors such as renal impairment or NVAF and extrinsic factors such as concomitant medications revealed significant effects of renal impairment and concomitant strong P-glycoprotein (P-gp) inhibitors on the pharmacokinetics of edoxaban. Exposure-response analysis found that in patients with NVAF, the incidence of bleeding events increased significantly with increasing edoxaban exposure, with steady-state minimum concentration (Cmin,ss) showing the strongest association. Clinical trial simulations of bleeding incidence were used to select 30 mg and 60 mg once-daily edoxaban with 50% dose reductions for patients with moderate renal impairment or receiving concomitant strong P-gp inhibitors as the treatment regimens in the ENGAGE AF-TIMI 48 (NCT00781391) trial.
A Resilient and Effective Task Scheduling Approach for Industrial Human-Robot Collaboration (2022)

Effective task scheduling in human-robot collaboration (HRC) scenarios is one of the great challenges of collaborative robotics. The shared workspace inside an industrial setting brings a lot of uncertainties that cannot be foreseen. A prior offline task scheduling strategy is ineffective in dealing with these uncertainties. In this paper, a novel online framework to achieve a resilient and reliable task schedule is presented. The framework can deal with deviations that occur during operation, different operator skills, error by the human or robot, and substitution of actors, while maintaining an efficient schedule by promoting parallel human-robot work. First, the collaborative job and the possible deviations are represented by AND/OR graphs. Subsequently, the proposed architecture chooses the most suitable path to improve the collaboration. If some failures occur, the AND/OR graph is adapted locally, allowing the collaboration to be completed. The framework is validated in an industrial assembly scenario with a Franka Emika Panda collaborative robot.