gebhart/patrepeval huggingface dataset:
Hydrogen separation through tailored dual phase membranes with nominal composition BaCe0.8Eu0.2O3-δ:Ce0.8Y0.2O2-δ at intermediate temperatures (2016)

Hydrogen permeation membranes are a key element in improving the energy conversion efficiency and decreasing the greenhouse gas emissions from energy generation. The scientific community faces the challenge of identifying and optimizing stable and effective ceramic materials for H<sub>2</sub> separation membranes at elevated temperature (400-800 °C) for industrial separations and intensified catalytic reactors. As such, composite materials with nominal composition BaCe<sub>0.8</sub>Eu<sub>0.2</sub>O<sub>3-δ</sub>:Ce<sub>0.8</sub>Y<sub>0.2</sub>O<sub>2-δ</sub> revealed unprecedented H<sub>2</sub> permeation levels of 0.4 to 0.61 mL·min<sup>-1</sup>·cm<sup>-2</sup> at 700 °C measured on 500 μm-thick-specimen. A detailed structural and phase study revealed single phase perovskite and fluorite starting materials synthesized via the conventional ceramic route. Strong tendency of Eu to migrate from the perovskite to the fluorite phase was observed at sintering temperature, leading to significant Eu depletion of the proton conducing BaCe<sub>0.8</sub>Eu<sub>0.2</sub>O<sub>3-δ</sub> phase. Composite microstructure was examined prior and after a variety of functional tests, including electrical conductivity, H<sub>2</sub>-permeation and stability in CO<sub>2</sub> containing atmospheres at elevated temperatures, revealing stable material without morphological and structural changes, with segregation-free interfaces and no further diffusive effects between the constituting phases. In this context, dual phase material based on BaCe<sub>0.8</sub>Eu<sub>0.2</sub>O<sub>3-δ</sub>:Ce<sub>0.8</sub>Y<sub>0.2</sub>O<sub>2-δ</sub> represents a very promising candidate for H<sub>2</sub> separating membrane in energy- and environmentally-related applications.
Bifurcations and chaos of bimetallic circular plates subjected to periodic heat load (2008)

Abstract The chaotic vibrations of bimetallic thin circular plates with geometric nonlinearity subjected to periodic time‐varying temperature load are investigated. The governing equations are formulated in forms similar to those of classical von Kármán's single‐layered plate theory by re‐determination of reference surface of coordinate. The nonlinear differential equation in time‐mode is derived by variational method following an assumed spatial‐mode. The Melnikov function is established theoretically to estimate regions of the chaos, and the Poincaré map, phase portrait, Lyapunov exponent, and Lyapunov dimension are used to evaluate if a chaotic motion really appears. Further investigations are developed by means of detailed numerical simulation, the combined bifurcation diagram and its corresponding maximum Lyapunov exponent are illustrated. The influence of static and time‐dependent temperature parameters, and damping parameter on the dynamic characteristics is examined. Interesting phenomena such as the onset of chaos, transient chaos, chaos with periodic windows, period‐doubling scenario and reversed period‐doubling bifurcation leading to chaos, jump phenomena, and chaos suddenly converts to period orbit have been observed.
Structural and Pragmatic Language Impairments in Children Evaluated for Autism Spectrum Disorder (ASD) (2021)

Pragmatic language impairments are common in neurodevelopmental disorders, especially in autism spectrum disorder (ASD). The relationship between structural language skills and pragmatic competence in children with autistic symptoms, however, is largely unknown. We investigated this relationship based on the Children's Communication Checklist-2 and early language delay among children (N = 177, 19% females) clinically evaluated for ASD, differentiated into ASD (n = 148) and non-ASD (n = 29). Structural language deficits were common and associated with reduced pragmatic competence in both groups. Pragmatic language impairments were most profound in children with ASD. Early language delay and structural language deficits were less common in females. Our findings suggest that assessment of structural language skills should be included in the evaluation of children with suspected ASD.
Automated facial landmark detection, comparison and visualization (2015)

Anthropometric facial landmarks and their detection has wide application in anthropology and forensic science. More specifically, these landmarks play an important role in facial comparison, in the analysis of morphological changes during human growth and in searching for the variability of human faces (e.g., sexual dimorphism). The automatic extraction of landmarks is a challenging area and specific visualization methods serving for the comparison are crucial for the correct interpretation of the results. In this paper we introduce a novel system which incorporates a newly proposed algorithm for automatic landmark detection. The algorithm is based on surface curvature and symmetric profile extraction. The landmarks are then used in the Generalized Procrustes analysis for facial comparison. Our system also introduces appropriate visualization methods supporting the presentation and understandability of the results.
Doping superlattices (1979)

The MBE technique has made feasible the growth of periodic semiconductor structures composed of ultrathin layers with alternating p- and n-doping. This kind of superlattice, in contrast to familiar heterostructure systems, does not contain any interfaces, and, therefore, does not show the problems related to those. Doping superlattices, on the contrary, are crystallographically only slightly perturbed by a relatively small amount of dopants (typically 1017 to 1019 cm−3 for the most interesting range). The periodic potential in this type of superlattice is due to the electrostatic potential of fixed ionized impurities, which may be partly compensated by mobile electrons and holes confined to the n- and p-doped layers, respectively. In addition to the features related to the subband formation as known from heterostructure superlattices, crystals with doping superstructure show intriguing pecularities which originate from the fact that electron and hole states are more or less separated from each other in local space. As a first consequence the electron and hole concentration in the crystal can be varied within a wide range either by optical excitation or by carrier injection or extraction via appropriate lateral electrodes. By the internal space charge fields the electrons and holes are always collected in the n- and p-layers, respectively. At sufficiently large superlattice period and low temperatures even large deviations from the equilibrium electron and hole concentration are quasistable. Secondly, the amplitude of the periodic potential, which may amount up to more than half of the energy gap of the pure semiconductor in the ground state, is gradually reduced with increasing carrier concentration by compensation of ionized impurity charges. As a consequence, a semiconductor with doping superstructure, in fact, represents a crystal with variable band gap and with variable carrier concentration. These unique features open a new field for both scientific research and device application. By appropriate choice of doping concentration and superlattice period, for instance, one may ’’design’’ crystals in which the conductivity parallel to the doping layers for both types of carriers may be modulated from zero up to typical values for low resistivity semiconductors (field effect transistor as a bulk device!) crystals with variable optical absorption coefficient for h/ω&amp;lt; and ≳Eg, or with variable photo- or electroluminescence frequency and intensity (tunable infrared laser with the whole bulk as active material and with low threshold intensity), and many kinds of other crystals with unusual properties.
Acoustic modal analysis of room responses from the perspective of state-space balanced realization with application to field interpolation (2022)

Despite its importance in structural dynamics and vibration, modal analysis is rarely performed in acoustics due to the high modal density of sound fields. A novel acoustic modal analysis (AMA) approach is proposed in this paper for enclosed acoustic fields, such as a room, from the perspective of state-space formulation of control systems. A single-input-multiple-output (SIMO) state-space model is established in light of the balanced realization (BR), given impulse response measurements. The BR model is then converted to a modal form such that the modal parameters, including natural frequencies, damping ratios, and mode shapes, can be estimated. To reconstruct mode shapes, plane wave decomposition (PWD) and compressive sensing (CS) techniques are exploited to solve the underdetermined problem for a spatially sparse representation of mode shapes under the Schroeder frequency. As a result, a model of a continuous system can be "interpolated" for any arbitrary source-receiver positions on the basis of the estimated mode shapes. With the identified modal parameters, the low-frequency and early reflection part of room impulse responses (RIRs) can be synthesized for arbitrary source-sensor pairs. The proposed AMA acoustic field interpolation is validated by extensive simulations and experiments.
A Mission-Enabling UV Laser for Mass Spectrometry (UVMS) with Continuously Selectable Output for In Situ Planetary Exploration (2018)

Ultra-compact, ns-class spaceflight-compatible UV lasers are finding increasing application in laser desorption, excitation, and ionization analytical applications on planetary missions, such as the detection and characterization of potential molecular biosignatures on Mars or icy moon surfaces. A short pulsed, solid state, UV laser is under development with selectable pulse energy capabilities for optimized sample ion production at a planetary surface.
Two lives, one REBOA (2017)

Russo, Rachel M. MD, MAS; Girda, Eugenia MD; Kennedy, Vanessa MD; Humphries, Misty D. MD Author Information
Pseudo Bipolar Nickel-Cadmium Batteries Used as Filter Elements to Pulsed Current Loads (1984)

Abstract : This investigation consisted of several tests of specially fabricated nickel-cadmium batteries having circular disk type electordes. These batteries were evaluated as filter elements between a constant current power supply and a 5-hertz pulsed load demanding approximately twice the power supply current during the load on portion of the cycle. Short tests lasting 10,000 cycles were conducted at up to a 21 C rate and an equivalent energy density of over 40 Joules per pound. In addition, two batteries were subjected to 10,000,000 charge/discharge cycles, one at 6.5 C rate and the other at a 13 C rate. Assuming an electrode to battery weight ratio of 0.5, these tests represent an energy density of about 7 and 14 joules per pound respectively. Energy density, efficiency, capacitance, average voltage, and available capacity were tracked during these tests. After 10,000,000 cycles, capacity degradation was negligible for one battery and about 20% for another. Cadmium electrode failure may be the lifetime limiting factor extremely low depth of discharge cycling. The output was examined, and a simple equivalent circuit is proposed. Originator supplied keywords include: Nickel-Cadmium battery; Biopolar nickel-cadmium battery; Capacitive filter; Life cycle testing.
Hepatitis C virus relapse was suppressed by long‐term self‐injection of low‐dose interferon in patients with chronic hepatitis C after pegylated interferon plus ribavirin treatment (2013)

Self-injected nIFN-α has larger benefits than prolonged PEG IFN-RBV for chronic hepatitis C patients with high viral loads of genotype 1b who fail to achieve early viral response during initial combination treatment.
Force feedback for surgical simulation (1998)

Surgical simulation can provide great benefits to medicine by reducing the cost and duration of training and making the process more intuitive and informative. However, a simulation system imposes stringent requirements on the human-machine interface. A sense of touch greatly enhances the simulation experience, since much of the skill that a medical professional possesses is in his ability to explore and diagnose by touch. This sensory input can be provided by an input device with force and/or tactile feedback. There are many technical challenges associated with the creation of a robust surgical-simulation system incorporating touch feedback. The medical application has unique needs that drive the design of the mechanism, the control scheme, the tissue deformation engine, and the overall system architecture and distribution of computation. This technology is not yet mature; several companies are dedicated to creating various parts of a simulation system, but as yet there are no commercially available solutions that are cost effective. Interest in force-feedback devices is gaining momentum in the commercial sector however, notably in the area of personal computer games. The authors believe this interest will drive down the cost of components and spur research efforts so that better, more cost-effective force-feedback devices will be available to the medical community for use in widespread surgical-simulation systems.
Experimental and computational study of perforated floor tile in data centers (2010)

Current CFD simulation studies of large data centers cannot model the detailed geometries of the perforated tiles due to grid size limitation. These studies often assume that the tile flow can be modeled as constant velocity based on a fully open tile. In this case, mass flux is enforced at the expense of under-predicting momentum flux; the error in momentum flux can be as high as a factor of four for a 25% open perforated tile. Since jet entrainment is a strong function of its initial momentum flux, this error can be significant with respect to predicting the mixing of the surrounding room air into the tile flow. Combined experimental and computational studies were carried out to quantify the importance of the detailed tile geometry, and it was found that proper prediction of the mixing process must account for the tile opening patterns. Suggestions of how to model the floor perforated tiles in data center CFD simulations are then presented.
Digital servo device for laboratory control and measurement applications (1979)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDigital servo device for laboratory control and measurement applicationsRich. Dalle-Molle and James D. DefreeseCite this: Anal. Chem. 1979, 51, 11, 1755–1759Publication Date (Print):September 1, 1979Publication History Published online1 May 2002Published inissue 1 September 1979https://pubs.acs.org/doi/10.1021/ac50047a037https://doi.org/10.1021/ac50047a037research-articleACS PublicationsRequest reuse permissionsArticle Views27Altmetric-Citations1LEARN 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
Database Design for Mere Mortals: A Hands-On Guide to Relational Database Design (1996)

Sound design can save you hours of development time before you write a single line of code. Based on the author's years of experience teaching this material, Database Design for Mere Mortals is a straightforward, platform-independent tutorial on the basic principles of relational database design.Database design expert Michael J. Hernandez introduces the core concepts of design theory and method without the technical jargon. Database Design for Mere Mortals will provide any developer with a common-sense design methodology for developing databases that work. 0201694719B04062001
The Gothic shale of the Pennsylvanian Paradox Formation Greater Aneth Field (Aneth Unit) Southeastern Utah U.S.A.: Seal for Hydrocarbons and Carbon Dioxide Storage. (2017)

Greater Aneth oil field, Utah’s largest oil producer, was discovered in 1956 and has produced over 483 million barrels of oil. Located in the Paradox Basin of southeastern Utah, Greater Aneth is a stratigraphic trap producing from the Pennsylvanian (Desmoinesian) Paradox Formation. Because Greater Aneth is a mature, major oil field in the western U.S., and has a large carbonate reservoir, it was selected to demonstrate combined enhanced oil recovery and carbon dioxide storage. The Aneth Unit in the northwestern part of the field has produced over 160 million barrels of the estimated 386 million barrels of original oil in place—a 42% recovery rate. The large amount of remaining oil made the Aneth Unit ideal to enhance oil recovery by carbon dioxide flooding and demonstrate carbon dioxide storage capacity.
Finite-state noiseless covert channels (2003)

Covert channels in a multilevel secure computer system can be exploited by malicious software to compromise information. The maximum information rate of a known channel is determined by modeling the channel as a communications channel and calculating its capacity. The capacity of an important class of covert channels, finite-state noiseless channels with nonuniform transition times, is found by adapting a technique suggested by Shannon (1964).< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Quality Prediction and Control of Injection Molding Process using Multistage MWGRNN Method (2006)

A multistage moving window generalized regression neural network (GRNN) was demonstrated to injection molding batch process. Firstly analyzing the changes of process correlation can lead to effective division of a process into several "operation" stages, in good agreement with process knowledge. Then the nonlinearly and dynamic relationship between process variables and final qualities was made at different stages, and a multistage online quality prediction model was built. In addition, a closed-loop quality control system is proposed. Application has demonstrated that this method can not only give a valid quality prediction, but also effectively carry on quality closed-loop control
Fourth international workshop on multicore software engineering (IWMSE 2011) (2011)

This paper summarizes the highlights of the Fourth International Workshop on Multicore Software Engineering (IWMSE 2011). The workshop addresses the software engineering and parallel programming challenges that come with the wide availability of multicore processors. Researchers and practitioners have come together to present and discuss new work on programming techniques, refactoring, performance engineering, and applications.
AE monitoring for control of carbon-carbon pyrolysis (2003)

A capability has been developed for monitoring the AE (acoustic emission) activity in carbon-carbon composites during pyrolysis. Small flat sheets of 2-D woven laminates heated at factory-representative (slow) rates exhibit two stages of intense activity. The first occurs during carbonization, and the second during cool-down. In both cases the emission amplitudes are fairly low and apparently result from microcracking within the matrix and between the matrix and fibers. The driving stresses during heating are due to gas pressure, matrix shrinkage, and thermal expansion. The cool-down emissions are presumed due to thermal stresses. It was possible to force delaminations to occur by rapid heating. Delaminations generate easily identifiable large-amplitude, long-duration emissions.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Association of HLA and multiple sclerosis. (1994)

Multiple Sclerosis (MS) is a demyelinating disease of the central nervous system. Although the cause of MS is still unknown, it is considered an autoimmune disease based on the composition of inflammatory infiltrates in the brain and on parallels with a T-cell-mediated animal model of demyelinating diseases called experimental allergic encephalomyelitis (EAE). Similar to other autoimmune diseases, the immunogenetic background, in particular the MHC/HLA type, contributes to susceptibility. This review summarizes the current knowledge about the association between HLA background and MS as well as immunological findings in EAE and MS. Finally, an attempt is made to explain how structural interactions between disease-associated HLA type and binding of an autoantigenic peptide could relate to disease.
Effects of dexamethasone on immune dysfunction and ventilator-associated pneumonia in COVID-19 acute respiratory distress syndrome: an observational study (2021)

Dexamethasone improves survival of patients with COVID-19 acute respiratory distress syndrome, but might shorten the delay between the start of invasive mechanical ventilation and the occurrence of ventilator-associated pneumonia, suggesting possible worsening of COVID-19-induced immune dysfunction with this treatment. In a prospective observational study, we found that mechanically ventilated patients with COVID-19 treated with dexamethasone presented earlier ventilator-associated pneumonia, had significantly lower monocyte Human Leukocyte Antigen-DR expression and number of circulating CD4 + cells after ICU admission, than those not treated with corticoids.
Dynamics and mechanisms of quantum dot nanoparticle cellular uptake (2010)

The findings presented here provide information on the mechanism of QD endocytosis that could be exploited to reduce non-specific targeting, thereby improving specific targeting of QDs in cancer diagnosis and treatment applications. These findings are also important in understanding the cytotoxicity of nanomaterials and in emphasizing the importance of strict environmental control of nanoparticles.
Real-time adaptive behaviors in multimodal human-avatar interactions (2010)

Multimodal interaction in everyday life seems so effortless. However, a closer look reveals that such interaction is indeed complex and comprises multiple levels of coordination, from high-level linguistic exchanges to low-level couplings of momentary bodily movements both within an agent and across multiple interacting agents. A better understanding of how these multimodal behaviors are coordinated can provide insightful principles to guide the development of intelligent multimodal interfaces. In light of this, we propose and implement a research framework in which human participants interact with a virtual agent in a virtual environment. Our platform allows the virtual agent to keep track of the user's gaze and hand movements in real time, and adjust his own behaviors accordingly. An experiment is designed and conducted to investigate adaptive user behaviors in a human-agent joint attention task. Multimodal data streams are collected in the study including speech, eye gaze, hand and head movements from both the human user and the virtual agent, which are then analyzed to discover various behavioral patterns. Those patterns show that human participants are highly sensitive to momentary multimodal behaviors generated by the virtual agent and they rapidly adapt their behaviors accordingly. Our results suggest the importance of studying and understanding real-time adaptive behaviors in human-computer multimodal interactions.