gebhart/patrepeval huggingface dataset:
An Improved Equivalent-Input-Disturbance Method for Uncertain Networked Control Systems with Packet Losses and Exogenous Disturbances (2021)

In a networked control system (NCS), time delays, uncertainties, packet losses, and exogenous disturbances seriously affect the control performance. To solve these problems, a modified disturbance suppression configuration of NCS was built. In the configuration, a proportional–integral observer (PIO) reproduces the state of a plant and reduces the observation error; an equivalent input disturbance (EID) estimator estimates and compensates for the disturbance in the control input channel. The stability conditions of the NCS are given by using a linear matrix inequality, and the gains of the PIO and state feedback controller are obtained. Numerical simulation results and an application of a magnetic levitation ball system verifies the effectiveness of the presented method. Comparison with the conventional PIO and EID methods shows that the presented method reduced the tracking error to about one-fifth and two-thirds of their original values, respectively. This demonstrates the validity and superiority of the presented method.
Microphase Separation of High Grafting Density Asymmetric Mixed Homopolymer Brushes on Silica Particles (2010)

A set of high grafting density mixed poly(tert-butyl acrylate) (PtBA)/polystyrene (PS) brushes with PtBA number-average molecular weight (Mn) fixed at 18.6 kDa and PS Mn ranging from 8.7 to 28.0 kDa was synthesized from 172 nm asymmetric difunctional initiator (Y-initiator)-functionalized silica particles by sequential surface-initiated atom transfer radical polymerization of tert-butyl acrylate and nitroxide-mediated radical polymerization (NMRP) of styrene. The Y-initiator-functionalized particles were prepared by the immobilization of a triethoxysilane-terminated Y-initiator onto the surface of bare silica particles via a hydrolysis/condensation process. The overall grafting densities of the obtained mixed brushes were 0.9−1.2 chains/nm2, which were significantly higher than those of mixed brushes prepared from silica particles that were surface functionalized by a monochlorosilane-terminated Y-initiator (0.6−0.7 chains/nm2). Differential scanning calorimetry analysis showed that all high density mixed brushes exhibited two distinct glass transitions, suggesting that the two grafted polymers were microphase separated in the brush layer. TEM showed that with the increase of PS Mn from 8.7 to 28.0 kDa the morphology of the mixed brushes changed from mostly isolated PS nanodomains buried in the PtBA matrix to a nearly cocontinuous nanostructure and two-layered nanostructures composed of a laterally microphase-separated bottom layer and a thin PS top layer. These morphologies were similar to the asymmetric mixed brushes with grafting densities of 0.6−0.7 chains/nm2. However, the feature sizes of the patterns formed from the microphase separation were much smaller. The observed grafting density effect on the pattern feature size was further confirmed from the study of a high grafting density mixed brush sample with PtBA Mn of 23.7 kDa and PS Mn of 25.7 kDa.
Eliminating Time Dispersion from Visco-Elastic Simulations with Memory Variables (2019)

Summary In recent years, it has been recognized that the seismic wave equation solved with a finite-difference method in time causes a predictable and removable error through the use of so-called time-dispersion transforms. These transforms were thought not to apply to visco-elastic media. However, in this paper we demonstrate that the time-dispersion transforms remain applicable when the visco-elastic wave equation is solved with memory variables, as is commonly done. The crucial insight is that both the wave equation and the memory variables are computed with the same time-dispersion error. We show how the time-dispersion transforms can be implemented in, for example, MATLAB, and demonstrate the developed theory on a visco-elastic version of the Marmousi model. Then, the time-dispersion transforms allow computation of the visco-elastic wave equation with large steps in time without significant loss of accuracy, and without having to make any modifications to the model.
A simple method for noise tolerance characterization of digital circuits (2002)

A method for characterizing dynamic noise tolerance of digital circuits is discussed. In this method noise impulses are characterized by their energy, voltage and width. The method is intended for use in simulation-based noise analysis and design of receiver circuits in digital systems.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Local atomic and electronic structure in the LiVPO<sub>4</sub>(F,O) tavorite‐type materials from solid‐state NMR combined with DFT calculations (2020)

<sup>7</sup> Li, <sup>31</sup> P, and <sup>19</sup> F solid-state nuclear magnetic resonance (NMR) spectroscopy was used to investigate the local arrangement of oxygen and fluorine in LiVPO<sub>4</sub> F<sub>1-y</sub> O<sub>y</sub> materials, interesting as positive electrode materials for Li-ion batteries. From the evolution of the 1D spectra versus y, 2D <sup>7</sup> Li radiofrequency-driven recoupling (RFDR) experiments combined, and a tentative signal assignment based on density functional theory (DFT) calculations, it appears that F and O are not randomly dispersed on the bridging X position between two X-VO<sub>4</sub> -X octahedra (X = O or F) but tend to segregate at a local scale. Using DFT calculations, we analyzed the impact of the different local environments on the local electronic structure. Depending on the nature of the VO<sub>4</sub> X<sub>2</sub> environments, vanadium ions are either in the +III or in the +IV oxidation state and can exhibit different distributions of their unpaired electron(s) on the d orbitals. Based on those different local electronic structures and on the computed Fermi contact shifts, we discuss the impact on the spin transfer mechanism on adjacent nuclei and propose tentative signal assignments. The O/F clustering tendency is discussed in relation with the formation of short V<sup>IV</sup> O vanadyl bonds with a very specific electronic structure and possible cooperative effect along the chain.
Charge storage in <i>β</i>-FeSi2 nanoparticles (2015)

We report on the observation of a surprisingly high specific capacitance of β-FeSi2 nanoparticle layers. Lateral, interdigitated capacitor structures were fabricated on thermally grown silicon dioxide and covered with β-FeSi2 particles by drop or spin casting. The β-FeSi2-nanoparticles, with crystallite sizes in the range of 10–30 nm, were fabricated by gas phase synthesis in a hot wall reactor. Compared to the bare electrodes, the nanoparticle-coated samples exhibit a 3–4 orders of magnitude increased capacitance. Time-resolved current voltage measurements show that for short times (seconds to minutes), the material is capable of storing up to 1 As/g at voltages of around 1 V. The devices are robust and exhibit long-term stability under ambient conditions. The specific capacitance is highest for a saturated relative humidity, while for a relative humidity below 40% the capacitance is almost indistinguishable from a nanoparticle-free reference sample. The devices work without the need of a fluid phase, the charge storing material is abundant and cost effective, and the sample design is easy to fabricate.
Prediction of G4 formation in live cells with epigenetic data: a deep learning approach (2023)

ABSTRACT G-quadruplexes (G4s) are secondary structures abundant in DNA that may play regulatory roles in cells. Despite the ubiquity of the putative G-quadruplex sequences (PQS) in the human genome, only a small fraction forms secondary structures in cells. Folded G4, histone methylation and chromatin accessibility are all parts of the complex cis regulatory landscape. We propose an approach for G4 formation prediction in cells that incorporates epigenetic and chromatin accessibility data. The novel approach termed epiG4NN efficiently predicts cell-specific G4 formation in live cells based on a local epigenomic snapshot. Our architecture confirms the close relationship between H3K4me3 histone methylation, chromatin accessibility and G4 structure formation. Trained on A549 cell data, epiG4NN was then able to predict G4x formation in HEK293T and K562 cell lines. We observe the dependency of model performance with different epigenetic features on the underlying experimental condition of G4 detection. We expect that this approach will contribute to the systematic understanding of correlations between structural and epigenomic feature landscape.
Two Level Undercut-Profile Substrate-Based Filamentary Coated Conductors Produced Using Metal Organic Chemical Vapor Deposition (2018)

The two level undercut-profile substrate (2LUPS) has been introduced as a concept for subdividing rare-earth-Ba 2Cu3O7 coated conductors (CC) into narrow filaments that effectively reduces the ac losses and improves field stability for dc magnets. The 2LUPS consists of two levels of plateaus connected by a wall with an undercut-profile, which enables a physical separation of the superconducting layer between the plateaus without reducing the effective width of the superconducting layer. In this study, we report for the first time the results of fabrication and characterization of a filamentary CC produced in an industrial setup by SuperPower Inc. using ion beam assisted deposition and metal organic chemical vapor deposition (IBAD-MOCVD) on a 2LUPS realized at the Technical University of Denmark, whereas previous studies discussed the fabrication using alternating beam assisted deposition and pulsed laser deposition (ABAD-PLD). We also present Hall probe scanning measurements performed using a standard THEVA TAPESTAR XL machine that is routinely employed for industrial critical current characterization of long length CCs. From these results is it clear that additional analysis of the measured field profiles are required when characterizing filamentary 2LUPS CC using a standard TAPESTAR setting. Using a model representation of the 2LUPS we calculated the expected magnetization response by means of finite element methods simulations and we find a good agreement with the experimentally observed magnetic profiles.
Poly(Oxyethylene)-amidoamine Based Gemini Cationic Surfactants with Hydrophilic Spacers as Clay Stabilizers (2020)

Water-based drilling fluids cause severe formation damage upon interaction with clay-based formations. Therefore, clay inhibitors are commonly used in the oil and gas industry to prevent clay swelling. The selection of a swelling inhibitor is critical and requires careful understanding. This study reports the application of poly(oxyethylene)-amidoamine based cationic gemini surfactants (GSs) as clay swelling inhibitors. These surfactants are different due to the hydrophilicity of the spacer. The synthesized surfactants contain a diethyl ether spacer (GS-A), a secondary amine spacer (GS-B), or an isopropyl alcohol spacer (GS-C). The swelling inhibition was determined with a linear swelling test, a capillary suction timer (CST), a wettability test, X-ray diffraction, particle size, rheology, and filtration experiments. The synthesized surfactants decreased the clay swelling compared to the base mud. The surfactant with a secondary amine spacer (GS-B) showed the best performance compared to the other surfactants. Moreover, the surfactant showed comparable performances with a commonly used clay stabilizer (KCl) and the commercially available cationic surfactant dodecyltrimethylammonium bromide (DTAB) used in the industry. It was observed that the synthesized surfactants reduced rheological properties and increased the particle size of bentonite and the filtration volume. The proposed gemini cationic surfactants can be used as an alternative for commercial clay swelling inhibitors.
Sens et légitimité de l'impôt (2014)

Dans la plupart des pays, la fiscalité fait aujourd’hui l’objet d’un intérêt accru en liaison directe avec l’impératif de réduction des déficits et de soutenabilité des finances publiques. Ce retour de l’impôt, souvent qualifié de « mobilisation fiscale », ne repose pas toutefois sur un sens de l’impôt partagé par l’ensemble des citoyens-contribuables. C’est au final la légitimité du système fiscal qui est en question.
Predictors of surgical site infection in glioblastoma patients undergoing craniotomy for tumor resection (2022)

The study findings indicated that SSI risk following craniotomy for glioblastoma resection may be elevated in patients with a low preoperative KPS, a trapdoor scalp incision during surgery, and steroid treatment both preoperatively and postoperatively. These data may help guide future operative decision-making for these patients.
Neuropsychological changes following deep brain stimulation surgery for Parkinson's disease: comparisons of treatment at pallidal and subthalamic targets versus best medical therapy (2014)

NCT00056563 and NCT01076452.
Supplementary Data 5 from The Mutational Landscape of Cancer's Vulnerability to Ionizing Radiation (2023)

&lt;p&gt;Supplementary Data 5: Association between individual gene expression and radiation survival&lt;/p&gt;
The effects of inclination on a two stage pulse tube cryocooler for use with a ground based observatory (2021)

Ground-based observatories across a wide range of wavelengths implement cryogenic cooling techniques to increase the sensitivity of instruments and enable low temperature detector technologies. Commercial pulse tube cryocoolers (PTCs) are frequently used to provide 40 K and 4 K stages as thermal shells in scientific instruments. However, PTC operation is dependent on gravity, giving rise to changes in cooling capacity over the operational tilt range of pointed telescopes. We present a study of the performance of a two stage PTC with a cooling capacity of 1.8 W at 4.2 K and 50 W at 45 K (Cryomech PT420-RM) from 0-55° away from vertical to probe capacity as a function of angle over a set of realistic thermal loading conditions. Our study provides a method to extract temperature estimates given predicted thermal loading conditions across the angular range sampled. We then discuss the design implications for current and future tilted cryogenic systems.
Electronic Pre-Compensation of Intra-Channel Nonlinearity in a 10Gb/s Optical Transmission System (2007)

We introduce several new algorithms for compensating intra channel &#13;\nnonlinearities in lightwave systems through electronic &#13;\npredistortion. These were optimized and modeled assuming realistic &#13;\nconditions at Nortel and were found to be insensitive to normal &#13;\nenvironmental and design fluctuations in commercial systems. We &#13;\nalso present an upper bound on system performance that agrees well &#13;\nwith measured results.
Accelerated test pattern generation by cone-oriented circuit partitioning (2002)

An efficient cone oriented circuit partitioning method is presented, which significantly speeds up automatic test pattern generation for combinational circuits. The advantages gained by the proposed partitioning method are based on the increase in the number of dominators in the circuit graph. In contrast to conventional ATPG working on the unpartitioned circuit test generation is less time consuming now and redundancies can often be identified without any backtracks. Experimental results illustrate the superiority of the cone oriented partitioning approach. Independent of the underlying ATPG algorithm the cone oriented partitioning results on average in a performance increase by more than a factor of 2.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Too noisy for toddlers (2015)

Excessive background noise may affect speech perception and language development in toddlers.
Reducing Concentration Polarization and Enhancing the Performance of Flexible Nickel‐Zinc Battery Using Polytetrafluoroethylene as Electrode Additive (2018)

Abstract The fabrication of flexible nickel‐zinc battery using a facile mixing of electroactive components for electrode preparation is presented. Polytetrafluoroethylene (PTFE) was found to be an effective binding additive by reducing concentration polarization, providing chemical/physical stability and enhancing flexibility. The zinc electrode containing PTFE maintained its original porous morphology even after hundreds of cycles while polymers such as PEO showed morphology change. Each component, as well as the assembled flexible cells, showed desired flexibility and stability even under bending conditions.
An Unusual Cause of Small-Bowel Obstruction (2017)

Our website uses cookies to enhance your experience. By continuing to use our site, or clicking "Continue," you are agreeing to our Cookie Policy | Continue JAMA Surgery HomeNew OnlineCurrent IssueFor Authors Podcast Publications JAMA JAMA Network Open JAMA Cardiology JAMA Dermatology JAMA Health Forum JAMA Internal Medicine JAMA Neurology JAMA Oncology JAMA Ophthalmology JAMA Otolaryngology–Head & Neck Surgery JAMA Pediatrics JAMA Psychiatry JAMA Surgery Archives of Neurology & Psychiatry (1919-1959) JN Learning / CMESubscribeJobsInstitutions / LibrariansReprints & Permissions Terms of Use | Privacy Policy | Accessibility Statement 2023 American Medical Association. All Rights Reserved Search All JAMA JAMA Network Open JAMA Cardiology JAMA Dermatology JAMA Forum Archive JAMA Health Forum JAMA Internal Medicine JAMA Neurology JAMA Oncology JAMA Ophthalmology JAMA Otolaryngology–Head & Neck Surgery JAMA Pediatrics JAMA Psychiatry JAMA Surgery Archives of Neurology & Psychiatry Input Search Term Sign In Individual Sign In Sign inCreate an Account Access through your institution Sign In Purchase Options: Buy this article Rent this article Subscribe to the JAMA Surgery journal
Reorganization of Binary Polymer Brushes:  Reversible Switching of Surface Microstructures and Nanomechanical Properties (2003)

For a binary polymer brush layer, we investigated the morphological state, the structure reordering, and the nanomechanical properties as a function of treatment with selective solvents. Two incompatible polymers, poly(methyl acrylate) (PMA) and poly(styrene-co-2,3,4,5,6-pentafluorostyrene) (PSF), were randomly grafted one after another onto a silicon wafer via the “grafting from” method producing thick (20−150 nm) dense mixed brush layers. The resulting layers possessed a nanostructured surface exhibiting either complete vertical or a combination of vertical and lateral microphase segregation of the two components. The lateral and vertical reorganization of the mixed brush layer was observed to be quick (on the order of a few minutes) and reversible for at least 100 “switches” between good and bad solvent states for each component. Atomic force microscopy (AFM) images revealed different surface structure states upon exposure to different solvents. Since PSF and PMA are mechanically dissimilar (glassy and rubbery, respectively) at room temperature, phase imaging was used to roughly verify the resulting structure. However, to determine vertical segregation in addition to truly authenticating the lateral ordering, surface nanomechanical mapping was conducted, which also allowed, for the first time, to directly determine the elastic modulus and adhesion. Results show the bimodal response of the mechanically heterogeneous surface, with elastic modulus and adhesion distributions very different for the “glassy state” and the “rubbery state”. Furthermore, depth profiling of the elastic modulus conducted for binary brushes confirmed the vertical segregation in the mixed brush. Results demonstrated the dramatic mechanical contrast of the surface as a function of solvent conditions and decisively revealed the modes of phase segregation in a binary polymer brush.
Ultrasound diagnosis of an atypical axillary lesion (2014)

We report on the case of a 41-year-old man with a recently diagnosed amelanotic ulcerated melanoma, with a Breslow thickness of 3.5 mm and Clark level IV. He had a pre-existing mass in the axilla, which had grown in parallel to the developing tumor. A large regional lymph node was clinically suspected. Ultrasound (US) examination of the axilla showed a large benign lipoma but also a very atypical peripheral perfusion. At the same time, a sentinel node showed a peripheral perfusion on US. Fine-needle aspiration cytology was performed of the different lesions and showed a melanoma metastasis in the sentinel node. Thereafter, a lymph node dissection was performed. The lipoma was seen in histopathology and even the peripheral perfusion was confirmed. US and US-guided fine-needle aspiration cytology can be easily applied in the diagnosis of lymph node metastases in melanoma patients and can help determine a benign or a malignant involvement.
Thermally and optically stimulated luminescence of Ce and Eu doped LiCaAlF&lt;inf&gt;6&lt;/inf&gt; (2013)

Single crystal LiCaAlF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> doped with Ce or Eu synthesized by Tokuyama Corp. were examined on dosimeter properties. In optically stimulated luminescence (OSL), Ce-doped LiCaAlF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> exhibited detectable signal while that of Eu-doped one was quite weak. In thermally stimulated luminescence (TSL), they both showed strong TSL and the linearity between the irradiated dose and TSL intensity was quite linear from 1 to 1000 mGy.
Transient Receptor Potential C 1/4/5 Is a Determinant of MTI-101 Induced Calcium Influx and Cell Death in Multiple Myeloma (2021)

Multiple myeloma (MM) is a currently incurable hematologic cancer. Patients that initially respond to therapeutic intervention eventually relapse with drug resistant disease. Thus, novel treatment strategies are critically needed to improve patient outcomes. Our group has developed a novel cyclic peptide referred to as MTI-101 for the treatment of MM. We previously reported that acquired resistance to HYD-1, the linear form of MTI-101, correlated with the repression of genes involved in store operated Ca<sup>2+</sup> entry (SOCE): PLCβ, SERCA, ITPR3, and TRPC1 expression. In this study, we sought to determine the role of TRPC1 heteromers in mediating MTI-101 induced cationic flux. Our data indicate that, consistent with the activation of TRPC heteromers, MTI-101 treatment induced Ca<sup>2+</sup> and Na<sup>+</sup> influx. However, replacing extracellular Na<sup>+</sup> with NMDG did not reduce MTI-101-induced cell death. In contrast, decreasing extracellular Ca<sup>2+</sup> reduced both MTI-101-induced Ca<sup>2+</sup> influx as well as cell death. The causative role of TRPC heteromers was established by suppressing STIM1, TRPC1, TRPC4, or TRPC5 function both pharmacologically and by siRNA, resulting in a reduction in MTI-101-induced Ca<sup>2+</sup> influx. Mechanistically, MTI-101 treatment induces trafficking of TRPC1 to the membrane and co-immunoprecipitation studies indicate that MTI-101 treatment induces a TRPC1-STIM1 complex. Moreover, treatment with calpeptin inhibited MTI-101-induced Ca<sup>2+</sup> influx and cell death, indicating a role of calpain in the mechanism of MTI-101-induced cytotoxicity. Finally, components of the SOCE pathway were found to be poor prognostic indicators among MM patients, suggesting that this pathway is attractive for the treatment of MM.