gebhart/patrepeval huggingface dataset:
A Data Warehouse Environment for Storing and Analyzing Simulation Output Data (2005)

Discrete event simulation modelling has been extensively used in modelling complex systems. Although it offers great conceptual-modelling flexibility, it is both computationally expensive and data intensive. There are several examples of simulation models that generate millions of observations to achieve satisfactory point and confidence interval estimations for the model variables. In these cases, it is exceptionally cumbersome to conduct the required output and sensitivity analysis in a spreadsheet or statistical package. In this paper, we highlight the advantages of employing data warehousing techniques for storing and analyzing simulation output data. The proposed data warehouse environment is capable of providing the means for automating the necessary algorithms and procedures for estimating different parameters of the simulation. These include initial transient in steady-state simulations and point and confidence interval estimations. Previously developed models for evaluating patient flow through hospital departments are used to demonstrate the problem and the proposed solutions.
Parasitic Ringing and Design Issues of Digitally Controlled High Power Interleaved Boost Converters (2004)

High power boost converter has become the essential part of the distributed power system that enables energy to be fully utilized in fuel cell powered electric vehicles and stationary power systems. This paper presents analysis and design of a high-power multileg interleaved boost converter with a digital signal processor (DSP) based controller. A 20-kW converter was designed with coupled inductors to allow core-loss reduction and designed with high frequency switching to minimize the component size and eliminate the switching losses under discontinuous conducting mode operation. A dual-loop average current mode current control method implemented in DSP is employed to achieve the fast transient response. It was found through circuit analysis, simulation and experiment that the boost inductor interacted with the device parasitic capacitor and created unnecessary oscillating current whenever it reached zero current. Two high-power devices were used in both simulation and experiment to verify the analysis and design for a wide load range. Simulation and experiment results of the 20-kW boost converter under startup condition and load transient condition are also presented. Different anti-windup schemes for a typical PI-controller are evaluated. The results show that this typical controller with proper anti-windup scheme achieves better transient performance than without anti-windup scheme.
In situ electrochemical characterisation of graphene and various carbon-based electrode materials: an internal standard approach (2015)

An internal standard protocol is utilised to simultaneously characterise and utilise carbon-based electrode materials during their implementation.
Microchip analysis of lithium in blood using moving boundary electrophoresis and zone electrophoresis (2005)

The determination of inorganic cations in blood plasma is demonstrated using a combination of moving boundary electrophoresis (MBE) and zone electrophoresis. The sample loading performed under MBE conditions is studied with the focus on the quantitative analysis of lithium. A concentration adjustment takes place when the sample components migrate into the chip during the sample loading step. Using a heart-cutting method, a diluted sample plug is subsequently separated with capillary zone electrophoresis. The excessive dispersion that is typical of the samples with a high ionic strength is thereby prevented. The method can be easily applied to commercially available capillary electrophoresis microchips under the condition that the electroosmotic flow is suppressed. For the first time the lithium concentration is determined in the blood plasma from a patient on lithium therapy without sample pretreatment. Using a microchip with conductivity detection, a detection limit of 0.1 mmol/L is obtained for lithium in a 140 mmol/L sodium matrix.
CASE STUDIES (2006)

In chapter 14, Sam Higgins and Paul McRae describe how Queensland Transport has developed a service-oriented approach that reflects service orientation as the business phenomenon described in this book. In particular, they look at how the approach is used to allow third-party software developers to integrate Queensland Transport regulatory processes seamlessly within commercial motor vehicle dealer business processes. The results are impressive. For example, the organization can now execute a service-based transaction at an activity-based cost of less than A$1.5 compared with the more traditional face-to-face approach which costs between A$4 and A$10. The department now collects over A$260 million (or 12%) of its total revenue using an SOA, with no direct customer contact. Services are available 23.5 hours per day, 6.5 days per week, and 80% of all services respond in less than 2 seconds.
Demonstration of a TODGA‐Based Continuous Counter‐Current Extraction Process for the Partitioning of Actinides from a Simulated PUREX Raffinate, Part II: Centrifugal Contactor Runs (2008)

The efficiency of the partitioning of trivalent actinides from a PUREX raffinate is demonstrated with a TODGA+TBP extractant mixture dissolved in an industrial aliphatic solvent TPH. Based on the results of cold and hot batch extraction studies and with the aid of computer code calculations, a continuous counter-current process is developed and two flowsheets are tested using miniature centrifugal contactors. The feed solution used is a synthetic PUREX raffinate, spiked with 241Am, 244Cm, 252Cf, 152Eu, and 134Cs. More than 99.9% of the trivalent actinides and lanthanides are extracted and back-extracted and very high decontamination factors are obtained for most fission products. The co-extraction of zirconium, molybdenum, and palladium is prevented using oxalic acid and HEDTA. However, 10% of ruthenium is extracted and only 3% is back-extracted using diluted nitric acid. The experimental steady-state concentration profiles of important solutes are determined and compared with model calculations and good agreement is generally obtained.
80/spl times/10.7 Gb/s ultra-long-haul (+4200 km) DWDM network with reconfigurable "broadcast & select" OADMs (2002)

We report the first dynamically reconfigurable ULH network demonstration using broadcast & select optical add drop multiplexer (OADM) architecture. We demonstrate 80/spl times/10.7 Gb/s NRZ C-band DWDM networking over 4160km of all-Raman amplified dispersion-managed fiber and 13 concatenated OADMs with 2dB Q-margin for 10/sup -15/ BER operation.
Foresee (4C): Wireless link prediction using link features (2011)

As an integral part of reliable communication in wireless networks, effective link estimation is essential for routing protocols. However, due to the dynamic nature of wireless channels, accurate link quality estimation remains a challenging task. In this paper, we propose 4C, a novel link estimator that applies link quality prediction along with link estimation. Our approach is data-driven and consists of three steps: data collection, offline modeling and online prediction. The data collection step involves gathering link quality data, and based on our analysis of the data, we propose a set of guidelines for the amount of data to be collected in our experimental scenarios. The modeling step includes offline prediction model training and selection. We present three prediction models that utilize different machine learning methods, namely, naive Bayes classifier, logistic regression and artificial neural networks. Our models take a combination of PRR and the physical layer information, i.e., Received Signal Strength Indicator (RSSI), Signal to Noise Ratio (SNR) and Link Quality Indicator (LQI) as input, and output the success probability of delivering the next packet. From our analysis and experiments, we find that logistic regression works well among the three models with small computational cost. Finally, the third step involves the implementation of 4C, a receiver-initiated online link quality prediction module that computes the short temporal link quality. We conducted extensive experiments in the Motelab and our local indoor testbeds, as well as an outdoor deployment. Our results with single and multiple senders experiments show that with 4C, CTP improves the average cost of delivering a packet by 20% to 30%. In some cases, the improvement is larger than 45%.
Performance characteristics of coal-washing equipment: air tables. Report of investigations (1979)

Four air table tests were conducted in two different preparation plants to determine the performance characteristics that might be anticipated in commercial operation. The air tables provided rough separations at high specific gravities of separation between 1.78 and 2.67; one test was unusually low at 1.56. Air tables are ideally suited to perform a rough black-and-white separation producing a clean coal and a refuse product, or to scalp the heavy impurities and clean coal while retreating the middlings in a subsequent cleaning circuit employing a device which usually produces a sharper separation. Air tables provide an inexpensive method of removing ash and pyrite, but at the cost of poor sharpness of separation. Error area values were above 251 and probable error values were above 0.296. The air table only does an effective cleaning job down to 28 mesh. Virtually all of the feed finer than 28 mesh reports to the clean coal or the dust collection system.
Surface acoustic wave propagation characteristics of ScAlN/diamond structure with buried electrode (2014)

In this paper, a 3D Finite Element model (FEM) of a surface acoustic wave (SAW) resonator consists of a piezoelectric thin film ScAlN /diamond layered structure with buried interdigital electrodes (IDT) was performed and analyzed using commercial software COMSOL Multiphysics, FEM software. We have done investigation on SAW propagation characteristics on the layered structures for different thickness of ScAlN film and electrode as well as different electrode materials. Simulation results showed that the maximum electromechanical coupling factor K <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> achieved up to be 14.35% for Rayleigh mode and 10% for Sezawa mode, which is more than two times larger than the previous report (5.48%). This work is useful for design of SAW devices with wideband and high frequency.
High Temperature Integrated and Flexible Ultrasonic Transducers for NDT (2008)

Integrated (IUTs) and flexible ultrasonic transducers (FUTs) are presented for NDT at high temperatures. These transducers are made of sol-gel sprayed piezoelectric thick (&gt; 40µm) ceramic films. The ceramic materials are lead-zirconate-titanate, bismuth titanate and lithium niobate which are for thickness measurement up to 150°C, 400°C and 800°C, respectively. The IUT can be also deposited onto one end of a long ultrasonic delay line to perform non-destructive testing at the other end at even higher temperatures. FUTs made of bismuth titanate films onto thin stainless steel foils are also used for thickness measurements at 300°C with a high temperature couplant sandwiched between the FUT and a steel substrate. All experiments at high temperatures were performed in pulse-echo and ultrasonic echoes with signal to noise ratios above 20dB were obtained. The centre operation frequencies of both IUTs and FUTs range from 4.4MHz to 10.7MHz.
Enhanced vibration damping of carbon fibers-ZnO nanorods hybrid composites (2012)

In this study, ZnO nanorods are grown on the surface of polyacrylonitrile based carbon fibers using a low temperature hydrothermal synthesis technique. Bi-layered carbon fiber-ZnO nanorod hybrid composite with epoxy matrix is prepared and tested for vibrational attenuations using dynamic mechanical analysis. Results revealed that the growth of ZnO nanorods on top of carbon fiber increases the damping performance by 50% while causing a slight decrease (similar to 7%) on the storage modulus. The enhanced damping of the hybrid composites can be related to the frictional mechanisms between the ZnO nanorod/epoxy and nanorod/nanorod interfaces combined with piezoelectric effect of ZnO. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4746398]
Synthesis of extracellular matrix glycoproteins by cultured microvascular endothelial cells isolated from the dermis of neonatal and adult skin (1985)

We examined the synthesis of extracellular matrix macromolecules by human microvascular endothelial cells isolated from the dermis of neonatal (foreskin) and adult (abdominal) skin. Electron microscopy showed that both cell types produced an extracellular matrix that was strictly localized to the subendothelial space. The subendothelial matrices were initially deposited as a single discontinuous layer of filamentous, electron-dense material that progressively became multilayered. Biosynthetic studies indicated that 2-4% of the newly synthesized protein was deposited in the subendothelial matrices by both cell types. Approximately 15-20% of the radiolabeled protein was secreted into the culture medium, and the remainder was confined to the cellular compartment. Biochemical and immunochemical analyses demonstrated the extracellular secretion of type IV collagen, laminin, fibronectin, and thrombospondin by the newborn and adult cells. Whereas type IV collagen was the predominant constituent of the matrix, fibronectin was secreted into the medium, with only small amounts being deposited in the matrix. Thrombospondin was a major constituent of the matrix produced by the newborn foreskin cells but was virtually absent in the matrix elaborated by the adult cells. However, both cell types did release comparable amounts of thrombospondin into their medium. Immunoperoxidase staining for type IV collagen revealed a fibrillar network in the subendothelial matrices produced by both adult and neonatal cells. In contrast, thrombospondin, which was detected only in the matrix of newborn cells, exhibited a spotty and granular staining pattern. The results indicate that the extracellular matrices synthesized by cultured human microvascular endothelial cells isolated from anatomically distinct sites and different stages of development and age are similar in ultrastructure but differ in their macromolecular composition.
Imaging extreme ultraviolet spectrometer employing a single toroidal diffraction grating: the initial evaluation (1988)

A high-efficiency extreme ultraviolet (EUV) imaging spectrometer has been constructed and tested. The spectrometer employs a concave toroidal grating illuminated at normal incidence in a Rowland circle mounting and has only one reflecting surface. The toroidal grating has been fabricated by a new technique employing an elastically deformable submaster grating which is replicated in a spherical form and then mechanically distorted to produce the desired aspect ratio of the toroidal surface for stigmatic imaging over the selected wavelength range. The fixed toroidal grating used in the spectrometer is then replicated from this surface. Photographic tests and initial photoelectric tests with a 2-D pulse-counting detector system have verified the image quality of the toroidal grating at wavelengths near 600 A. The results of these initial tests are described in detail, and the basic designs of two instruments which could employ the imaging spectrometer for astrophysical investigations in space are briefly described, namely, a high-resolution EUV spectroheliometer for studies of the solar chromosphere, transition region, and corona and an EUV spectroscopic telescope for studies of nonsolar objects.
Differentiation between Endogenous and Exogenous Testosterone in Human Plasmaand Urine after Oral Administration of Deuterium-Labeled Testosterone by Mass Fragmentography (1980)

A mass fragmentographic method employing stable isotopically labeled testosterone was employed to simultaneously determine the concentrations of endogenous and exogenous testosterone in the urine and plasma of two healthy male volunteers. After oral administration of 20 mg testosterone-19,19,19-d3, a slight but significant amount of the deuterated testosterone appeared in the plasma and was rapidly cleared. The results show that the exogenous testosterone did not influence the plasma levels or urinary excretion of endogenous testosterone.
Direct list mode reconstruction for motion compensation (2005)

As resolution of PET increases, subject movement is becoming a significant factor that limits image quality. It is important to develop image reconstruction methods that can compensate motion. The basic approach that we have taken in this work is to use video cameras to track the subject movement and to use this information in reconstruction algorithms. We have developed a direct list-mode reconstruction algorithm that incorporates the subject motion information in the likelihood function. The method can accurately compensate measured motion and it does not require interpolation of either measured events or reconstructed images. We applied the method to experimental data from a phantom in a microPET scanner.
Smooth Muscle–Selective Inhibition of Nuclear Factor‐κB Attenuates Smooth Muscle Phenotypic Switching and Neointima Formation Following Vascular Injury (2013)

These results provide novel evidence that activation of the NF-κB pathway cell-autonomously mediates SMC phenotypic switching and contributes to neointima formation following vascular injury.
Radionuclide scans in reflux nephropathy. (1987)

New feeder for infants with cleft palate Sir, Early feeding difficulties in infants with a cleft palate are well documented' as is poor mother-infant bonding.2 For
Fowl Cholera: Gel Diffusion Precipitin Test for Serotyping Pasteurella multocida from Avian Species (1972)

K. L. Heddleston, J. E. Gallagher, P. A. Rebers, Fowl Cholera: Gel Diffusion Precipitin Test for Serotyping Pasteurella multocida from Avian Species, Avian Diseases, Vol. 16, No. 4 (Jul. - Sep., 1972), pp. 925-936
Centrin Is Necessary for the Formation of the Motile Apparatus in Spermatids of<i>Marsilea</i> (2001)

During spermiogenesis in the water fern, Marsilea vestita, basal bodies are synthesized de novo in cells that lack preexisting centrioles, in a particle known as a blepharoplast. We have focused on basal body assembly in this organism, asking what components are required for blepharoplast formation. Spermiogenesis is a rapid process that is activated by placing dry microspores into water. Dry microspores contain large quantities of stored protein and stored mRNA, and inhibitors reveal that certain proteins are translated from stored transcripts at specific times during development. Centrin translation accompanies blepharoplast appearance, while beta-tubulin translation occurs later, during axonemal formation. In asking whether centrin is an essential component of the blepharoplast, we used antisense, sense, and double-stranded RNA probes made from the Marsilea centrin cDNA, MvCen1, to block centrin translation. We employed a novel method to introduce these RNAs directly into the cells. Antisense and sense both arrest spermiogenesis when blepharoplasts should appear, and dsRNA made from the same cDNA is an effective inhibitor at concentrations at least 10 times lower than either of the single-stranded RNA used in these experiments. Blepharoplasts are undetectable and basal bodies fail to form. Antisense, sense, and dsRNA probes made from Marsilea beta-tubulin permitted normal development until axonemes form. In controls, antisense, sense, and dsRNA, made from a segment of HIV, had no effect on spermiogenesis. Immunoblots suggest that translational blocks induced by centrin-based RNA are gene specific and concentration dependent, since neither beta-tubulin- nor HIV-derived RNAs affects centrin translation. The disruption of centrin translation affects microtubule distributions in spermatids, since centrin appears to control formation of the cytoskeleton and motile apparatus. These results show that centrin plays an essential role in the formation of a motile apparatus during spermiogenesis of M. vestita.
Online estimation of inter-channel phase differences using non-negative matrix factorization (2016)

Estimating non-linearities in phase differences between channel pairs of a multi-channel audio recording in a reverberant environment provides more precise spatial information that yields direct improvement in signal enhancement, as we show for the case of source separation. In this study, we propose an online method for estimating inter-channel phase differences (IPDs) that do not linearly depend on frequency. For this task, we use short term cross-correlation features between the input channels and extract the non-linear IPDs as well as a measure of activation for each source using non-negative matrix factorization. Our evaluation shows that the proposed method outperforms a state-of-the-art approach based on linear phase differences by 9.4% relative improvement in signal-to-interference ratio on average. Furthermore, increasing the window length of temporal context used for the decomposition increases the source separation accuracy, which converges to the accuracy of the offline method.
An update on visfatin/pre-B cell colony-enhancing factor, an ubiquitously expressed, illusive cytokine that is regulated in obesity (2006)

This review summarizes all of the papers in the last year on the expression and function of visfatin/pre-B-cell colony-enhancing factor and highlights inconsistent observations from various investigators studying this protein. It also highlights previous observations on the role of pre-B-cell colony-enhancing factor. We suggest that the pathophysiologic role of visfatin/pre-B-cell colony-enhancing factor in humans remains largely unknown.
Efficient reconstruction of sequences (2001)

We introduce and solve some new problems of efficient reconstruction of an unknown sequence from its versions distorted by errors of a certain type. These erroneous versions are considered as outputs of repeated transmissions over a channel, either a combinatorial channel defined by the maximum number of permissible errors of a given type, or a discrete memoryless channel. We are interested in the smallest N such that N erroneous versions always suffice to reconstruct a sequence of length n, either exactly or with a preset accuracy and/or with a given probability. We are also interested in simple reconstruction algorithms. Complete solutions for combinatorial channels with some types of errors of interest in coding theory, namely, substitutions, transpositions, deletions, and insertions of symbols are given. For these cases, simple reconstruction algorithms based on majority and threshold principles and their nontrivial combination are found. In general, for combinatorial channels the considered problem is reduced to a new problem of reconstructing a vertex of an arbitrary graph with the help of the minimum number of vertices in its metrical ball of a given radius. A certain sufficient condition for solution of this problem is presented. For a discrete memoryless channel, the asymptotic behavior of the minimum number of repeated transmissions which are sufficient to reconstruct any sequence of length n within Hamming distance d with error probability /spl epsiv/ is found when d/n and /spl epsiv/ tend to 0 as n/spl rarr//spl infin/. A similar result for the continuous channel with discrete time and additive Gaussian noise is also obtained.
Clinical Recovery from Acute Ischemic Stroke after Early Reperfusion of the Brain with Intravenous Thrombolysis (1999)

To the Editor: A 1995 study found that treatment with tissue plasminogen activator (t-PA) was efficacious for intravenous thrombolysis if given within three hours after the onset of ischemic stroke...