gebhart/patrepeval huggingface dataset:
A control strategy of induction machine to be used as generator in cogeneration plants in stand alone operations (2005)

The energy management is becoming more and more important in recent years, especially with the spreading of distributed power generation plants. The possibility of the generation system to work in stand alone mode represents a chief characteristic that makes one system preferable with respect to others. The induction machine, that seems to be the optimal solution for the generation grid connected, presents some problems when working stand alone. In this paper the induction generator in stand alone operations is analyzed. By means of analytical model the conditions necessary to realize an autonomous network are discussed. The influence of the saturation of magnetic circuits and the power limit of the generation system have been evidenced. Results of numerical simulations are reported.
Familial Occurrence of an Arteriovenous Fistula with a Giant Perimedullary Pseudoaneurysm of the Thoracic Spinal Cord in 2 Young Siblings (1998)

Two siblings, a sister at age 3 years and a brother (15 years later) at 4 years of age, both presented with similar clinical pictures consisting of back pain, progressive gait difficulty, lower extremity weakness and hyperreflexia. Imaging studies in both cases showed the presence of a perimedullary mass with expansion of the bony spinal canal at T10-T12. Angiography demonstrated almost identical vascular lesions that in each case was being fed by a single left-sided T8 fistulous vessel that expanded into a giant perimedullary venous pseudoaneurysm. Each malformation was successfully obliterated using endovascular techniques, balloon occlusion of the feeding vessel in the first case and coil embolization of the pseudoaneurysm in the second. Following treatment the neurologic deficits resolved in both patients. These young siblings represent the first known case of familial occurrence of very similar giant perimedullary venous pseudoaneurysms of the thoracic spinal cord.
Use of polarized infrared external reflection spectroscopy to study phospholipid monolayers at the air-water interface (1998)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Keith M. Faucher, Zhao Ping, Richard A. Dluhy; Use of polarized infrared external reflection spectroscopy to study phospholipid monolayers at the air-water interface. AIP Conference Proceedings 1 June 1998; 430 (1): 641–644. https://doi.org/10.1063/1.55744 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
Self-Injection Locking of a Vortex Spin Torque Oscillator by Delayed Feedback (2016)

The self-synchronization of spin torque oscillators is investigated experimentally by re-injecting its radiofrequency (rf) current after a certain delay time. We demonstrate that the integrated power and spectral linewidth are improved for optimal delays. Moreover by varying the phase difference between the emitted power and the re-injected one, we find a clear oscillatory dependence on the phase difference with a 2π periodicity of the frequency of the oscillator as well as its power and linewidth. Such periodical behavior within the self-injection regime is well described by the general model of nonlinear auto-oscillators including not only a delayed rf current but also all spin torque forces responsible for the self-synchronization. Our results reveal new approaches for controlling the non-autonomous dynamics of spin torque oscillators, a key issue for rf spintronics applications as well as for the development of neuro-inspired spin-torque oscillators based devices.
Function Norms for Neural Networks (2019)

Deep neural networks (DNNs) have become increasingly important due to their excellent empirical performance on a wide range of problems. However, regularization is generally achieved by indirect means, largely due to the complex set of functions defined by a network and the difficulty in measuring function complexity. There exists no method in the literature for additive regularization based on a norm of the function, as is classically considered in statistical learning theory. In this work, we study the tractability of function norms for deep neural networks with ReLU activations. We provide, to the best of our knowledge, the first proof in the literature of the NP-hardness of computing function norms of DNNs of 3 or more layers. We also highlight a fundamental difference between shallow and deep networks. In the light on these results, we propose a new regularization strategy based on approximate function norms, and show its efficiency on a segmentation task with a DNN.
Spiro-Lactams as Novel Antimicrobial Agents (2019)

The designed structural modulation of biologically active spiro-β-lactams involved the replacement of the four-membered β-lactam ring by a five-membered γ-lactam ring. Although conformational and superimposition computational studies revealed no significant differences between β- and γ- lactam pharmacophoric features, the studied structural modulation did not lead to compounds with a similar biological profile. The observed results suggest that the β-lactamic core is a requirement for the activity against both HIV and Plasmodium.
Celebrating the many contributions of Jim Wyant (2021)

Jim has been a source of information and inspiration for many people, including me. It was Jim who steered me in 1994 to a new website named Yahoo! that was being developed by two grad students in my own department. And it was Jim who, through his many contributions to the Wolfram Demonstrations Project, introduced me to the power of manipulatable figures to illustrate various aspects of optics using Mathematica™.
The impact of patient-specific instrumentation on unicompartmental knee arthroplasty: a prospective randomised controlled study (2017)

Therapeutic, Level I.
SU‐E‐T‐598: Parametric Equation for Quick and Reliable Estimate of Stray Neutron Doses in Proton Therapy and Application for Intracranial Tumor Treatments (2015)

Purpose: Development of a parametric equation suitable for a daily use in routine clinic to provide estimates of stray neutron doses in proton therapy. Methods: Monte Carlo (MC) calculations using the UF‐NCI 1‐year‐old phantom were exercised to determine the variation of stray neutron doses as a function of irradiation parameters while performing intracranial treatments. This was done by individually changing the proton beam energy, modulation width, collimator aperture and thickness, compensator thickness and the air gap size while their impact on neutron doses were put into a single equation. The variation of neutron doses with distance from the target volume was also included in it. Then, a first step consisted in establishing the fitting coefficients by using 221 learning data which were neutron absorbed doses obtained with MC simulations while a second step consisted in validating the final equation. Results: The variation of stray neutron doses with irradiation parameters were fitted with linear, polynomial, etc. model while a power‐law model was used to fit the variation of stray neutron doses with the distance from the target volume. The parametric equation fitted well MC simulations while establishing fitting coefficients as the discrepancies on the estimate of neutron absorbed doses were within 10%. The discrepancy can reach ∼25% for the bladder, the farthest organ from the target volume. Finally, the validation showed results in compliance with MC calculations since the discrepancies were also within 10% for head‐and‐neck and thoracic organs while they can reach ∼25%, again for pelvic organs. Conclusion: The parametric equation presents promising results and will be validated for other target sites as well as other facilities to go towards a universal method.
<title>Regularization for non-linear image restoration using a prior on the object power spectrum</title> (2005)

Image restoration algorithms compensate for blur induced attenuation of frequency components that correspond to fine scale image features. However, for Fourier spatial frequency components with low signal to noise ratio, noise amplification outweighs the benefit of compensation and regularization methods are required. This paper investigates a generalization of the Wiener filter approach developed as a maximum a priori estimator based on statistical expectations of the object power spectrum. The estimate is also required to agree with physical properties of the system, specifically object positivity and Poisson noise statistics. These additional requirements preclude a closed form expression. Instead, the solution is determined by an iterative approach. Incorporation of the additional constraints results in significant improvement in the mean square error and in visual interpretability. Equally important, it is shown that the performance has weak sensitivity to the weight of the prior over a large range of SNR values, blur strengths, and object morphology, greatly facilitating practical use in an operational environment.
A molecular and functional analysis of large granular lymphocyte expansions in patients with chronic myelogenous leukemia treated with tyrosine kinase inhibitors (2011)

Tyrosine kinase inhibitor (TKI) therapy has become the standard treatment for chronic myelogenous leukemia (CML). Off-target kinase inhibition has been implicated in the appearance of unique adverse effects, such as colitis and pleural effusions. In addition, some patients present oligoclonal expansions of large granular lymphocytes (LGLs). We sought to further investigate this phenomenon in 64 patients treated with five different TKIs. Clonal expansions of cytotoxic T lymphocytes (CTLs) were identified in all TKI-treated patient groups, but only in dasatinib-treated patients were these expansions characterized as LGLs. Survival factors known to be important in LGL leukemia (interleukin-15 [IL-15] transpresentation, plasma platelet-derived growth factor [PDGF]-BB levels, nuclear factor-κB [NF-κB] and T-bet activation) were found to be associated with TKI-induced LGL expansions. Interestingly, patients with LGL expansions had increased cytotoxicity against non-transformed endothelial cells, which may play a role in observed autoimmune-like side effects. Our results indicate that patients with CML treated with TKIs can develop T cell expansions, which can in certain cases be related to some adverse effects.
Synthesis and Materials Properties of Sn/P-Doped Ge on Si(100): Photoluminescence and Prototype Devices (2011)

We report the fabrication of a new class of Sn/P-doped Ge-like materials with high quality optical, structural, and device properties. A flux of Ge2H6 with trace amounts of SnD4 is used to deposit thick Sn-doped Ge films via chemical vapor deposition (CVD) at low temperatures (∼390–370 °C) directly on Si(100) substrates. The presence of Sn in the gas mixture alters the standard Ge growth mechanism (Stranski–Krastanov) to yield atomically smooth layers with minimal threading defects at growth rates as high as 15–30 nm/min. The films, dubbed “quasi-Ge”, contain ∼1019 cm–3 Sn “impurities”, which do not produce any measurable shift in the lattice constant or emission wavelength. This new method represents a low-cost, high-performance alternative to the standard CVD approaches to grow high-quality Ge-on-Si for optoelectronic applications. In this regard, the optical quality of the materials is corroborated by studying photoluminescence (PL) of both intrinsic samples and n-type analogues doped well above 1019 atoms cm–3, using the single-source P(GeH3)3. Heavy n-doping significantly enhances the PL intensity, allowing the observation of distinct indirect and direct gap peaks. The device quality of the material was evaluated by fabricating prototype heterostructure photodetectors in n-i-p geometry. These are found to exhibit significantly higher responsivities than pure Ge p-i-n analogues and dark current densities comparable to the state of the art.
A VLSI architecture for lifting-based forward and inverse wavelet transform (2002)

We propose an architecture that performs the forward and inverse discrete wavelet transform (DWT) using a lifting-based scheme for the set of seven filters proposed in JPEG2000. The architecture consists of two row processors, two column processors, and two memory modules. Each processor contains two adders, one multiplier, and one shifter. The precision of the multipliers and adders has been determined using extensive simulation. Each memory module consists of four banks in order to support the high computational bandwidth. The architecture has been designed to generate an output every cycle for the JPEG2000 default filters. The schedules have been generated by hand and the corresponding timings listed. Finally, the architecture has been implemented in behavioral VHDL. The estimated area of the proposed architecture in 0.18-/spl mu/ technology is 2.8 nun square, and the estimated frequency of operation is 200 MHz.
Complexes of Biacetyldihydrazone and Pyridinalhydrazones with Iron(II), Cobalt(II) and Nickel(II) (1956)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComplexes of Biacetyldihydrazone and Pyridinalhydrazones with Iron(II), Cobalt(II) and Nickel(II)R. Carl Stoufer and Daryle H. BuschCite this: J. Am. Chem. Soc. 1956, 78, 23, 6016–6019Publication Date (Print):December 1, 1956Publication History Published online1 May 2002Published inissue 1 December 1956https://pubs.acs.org/doi/10.1021/ja01604a016https://doi.org/10.1021/ja01604a016research-articleACS PublicationsRequest reuse permissionsArticle Views386Altmetric-Citations66LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Implementation of an augmented boost converter for improved load transient response (2012)

This paper explores fundamental performance challenges inherent to the dc-dc boost converter topology and presents an augmentation method as a solution. Augmentation techniques provide additional energy paths to support the load during transients. In addition, the non-minimum phase nature of boost converters is overcome with augmentation. A small signal analysis for an augmented boost converter topology is developed. Experimental results show success in decreasing transient response time and output voltage droop.
Fluid Sampling in Tight Unconventionals (2019)

Abstract In this paper we emphasize the duality of fluid sampling: (1) fluid characterization; to collect samples and measure pressure/volume/temperature (PVT) data that can be used to build and tune an equation of state (EOS) model, and (2) fluid initialization; to collect samples to estimate in-situ fluid compositions. It is hard, if not impossible, to obtain truly in-situ representative fluid samples in multi-fractured horizontal wells (MFHW). This paper explains why fluids measured in the lab may be significantly different from in-situ representative fluid samples, even if the fluid samples are collected shortly after the well is put online. The paper also suggests that practically all samples, in-situ representative or not, can and should be used to build a reliable EOS model. To make a comprehensive assessment of fluid sampling in tight unconventionals, reservoir fluids ranging from black oils to gas condensates have been studied. For a wide range of fluid systems, a compositional reservoir simulator has been used to assess two main scenarios: (1) an initially undersaturated (single-phase) fluid system, and (2) initially saturated (two-phase) fluid system. To quantify how collected surface samples change with time, three properties are studied as functions of time: (1) saturation pressure and type (dewpoint | bubblepoint), (2) producing gas/oil ratio (GOR), and (3) stock-tank oil (STO) API. Observations of how these three properties change with time is used to help explain why elevated saturation pressures, greater than the initial reservoir pressure, often can be observed. Rapid decline of the flowing bottomhole pressure (BHP | pwf), together with shut-in periods, makes it difficult to obtain in-situ representative samples in MFHW. For slightly undersaturated reservoirs, and saturated reservoirs, it may be impossible to obtain in-situ representative fluid samples because of the near-wellbore multiphase behavior. However, samples which are not in-situ representative can still be used to estimate original in-situ fluids using equilibrium contact mixing (ECM) procedures. In this paper, we propose two ECM methods that can either be carried out by physical measurements in a PVT lab or can be computed with a properly tuned EOS model.
Determination of Salsolinol and Related Catecholamines through On-Line Preconcentration and Liquid Chromatography/Atmospheric Pressure Photoionization Mass Spectrometry (2006)

A new analytical approach has been developed for simultaneous measurements of endogenous salsolinol and major catecholamines in brain tissue of experimental animals. This procedure involves a combination of on-line phenyl boronate affinity preconcentration and microcolumn liquid chromatography, followed by mass spectrometry equipped with an atmospheric pressure photoionization (APPI) source. Flow conditions of the APPI source were optimized for detection sensitivity while different dopants were evaluated. The on-line preconcentration was found essential for the sensitivity requirements of salsolinol measurements in the brain tissue from alcohol-preferring rats subjected to different levels of alcohol exposure.
Three Approaches for Managing Stiffness in Origami-Inspired Mechanisms (2018)

Ensuring that deployable mechanisms are sufficiently rigid is a major challenge due to their large size relative to their mass. This paper examines three basic types of stiffener that can be applied to light, origami-inspired structures to manage their stiffness. These stiffeners are modeled analytically to enable prediction and optimization of their behavior. The results obtained from this analysis are compared to results from a finite-element analysis and experimental data. After verifying these models, the advantages and disadvantages of each stiffener type are considered. This comparison will facilitate stiffener selection for future engineering applications.
Immune blot analysis of viral surface proteins in serum and liver of patients with chronic hepatitis B virus infection (1989)

Abstract The small and the middle surface proteins of hepatitis virus form either the virion or the 22 nm particle both of which are secreted. The large surface protein by itself remains cell bound in artificially transfected cell culture unless it is accompanied by an excess of the smaller proteins. Its behavior in vivo is not yet well studied. Using specific monoclonal antibodies for immunoblotting, we found an abundance of small surface protein in the serum of chronic virus carriers and moderate amounts in the liver irrespective of viremia. The large surface protein was present in the serum and the liver of viremic carriers. In nonviremic carriers, the large protein was absent from serum, but in the liver a shorter form of the large protein was readily detectable. These findings suggest a complex regulatory mechanism of the viral surface protein depending on the expression of other viral gene products.
Cuticular hydrocarbons on elytra of the Diaprepes root weevil Diaprepes abbreviatus (L.) (Coleoptera: Curculionidae) (2004)

Abstract 1 External gland openings and associated structures on the elytra of teneral and mature Diaprepes root weevils, Diaprepes abbreviatus (L.), were elucidated by scanning electron microscopy (SEM). 2 There were clear differences between teneral, callow adults and fully mature adults. In the field, teneral adults remain in the pupal chamber in the soil until sclerotization of the cuticle is complete or nearly so. 3 Phenotypic variation of the elytra in this species consists of varying patterns and coloration of scaled intervals between a variable number of raised ridges devoid of scales. In addition to being thinner and lighter in colour than fully mature adults, the elytra of teneral adults were devoid of waxy hydrocarbon secretions. 4 External gland openings at the base of each scale were observed on teneral elytra and mature elytra washed with methylene chloride. 5 SEM evidence to document the production of waxy filaments by these glands and partial characterization of these by gas chromatography and mass spectrometry are presented.
Material-flaw detection and classification using optical interferometry, the Fourier transform, and an artificial neural network (1993)

Automatic detection and classification of material flaws based on real-time holographic interferometry, optical Fourier transform and an electronic neural network approach is reported.
Quasi-Analytical Calculation of Frequency-Dependent Resistance of Rectangular Conductors Considering the Edge Effect (2022)

This paper presents an accurate quasi-analytical approximation of frequency-dependent ac resistance of single rectangular conductors. In this work, first, a two-dimensional analytical ac resistance of rectangular conductors is derived. Unlike circular conductors, where current density distributes evenly in each layer of the conductor’s cross-section, the edge effect is involved for rectangular conductors. Due to the edge effect, one cannot define an accurate boundary condition for solving the two-dimensional partial differential equation of magnetic field or current density of rectangular conductors. Hence, the calculated two-dimensional analytical current density result is not accurate and is modified and fitted on FEM simulation, taking the conductor’s thickness into account using the least-square problem to improve its accuracy. Unlike numerical approaches, the proposed method yields an easy-to-use formula applicable to industrial applications in different fields. Contrary to the one-dimensional approach, which is only valid for very thin rectangular conductors, this method takes edge effect into account and can be used for any thickness (from square to very thin rectangular conductors). The proposed method can be used in applications where an accurate ac resistance of rectangular conductors over a wide frequency range is required, such as white-box modeling of power transformers and interpreting its frequency response analysis (FRA), and calculating the resistance of electric machine winding, busbars, and printed circuit board traces.
A high-current electrothermal bistable MEMS relay (2003)

This paper reports the design, fabrication and testing of a thermally-actuated bistable MEMS relay. Mechanical bistability ensures zero actuation power in both the on and off states, and permits actuation with a transient thermal actuator. In the off state, this relay stands off more than 200 V. In the on state, it exhibits a minimum total resistance of 60 n/spl Omega/ and a maximum current carrying capacity of 3 A. It switches with a maximum 5 Hz rate.