gebhart/patrepeval huggingface dataset:
EEG source extraction by autoregressive source separation reveals abnormal synchronization in Parkinson's disease (2009)

Recent research efforts in studying brain connectivity has provided new perspectives to understanding of neurophysiology of brain function. Connectivity measures are typically computed from electroencephalogram (EEG) signals, yet the presence of volume conduction makes interpretation of results difficult. One possible alternative is to model the connectivity in the source space. In this study, we proposed a novel source separation technique in which EEG signals are represented as a state-space framework. The framework jointly models the underlying brain sources and the connectivity between them in the form of a generalized autoregressive (AR) process. The proposed technique was applied to real EEG data collected from normal and Parkinson's patients during a motor task. The extracted sources revealed the abnormal beta activity in Parkinson's subjects and showed similar biological networks as previous studies.
Adaptive optics by incoherent digital holography (2012)

Adaptive optics in astronomical and other imaging systems allows compensation of aberrations introduced by random variations of the refractive index in the imaging path. I propose what I believe is a new type of adaptive optics system that dispenses with the hardware lenslet arrays and deformable mirrors of conventional systems. Theoretical and experimental studies show that wavefront sensing and compensation can be achieved by numerical processing of digital holograms of the incoherent object and a guide star. The incoherent digital holographic adaptive optics is seen to be particularly robust and efficient, with envisioned applications in astronomical imaging, as well as fluorescence microscopy and remote sensing.
Ruthenium Catalyzed Hydroboration of Terminal Alkynes to <i>Z</i>-Vinylboronates (2012)

The nonclassical ruthenium hydride pincer complex [Ru(PNP)(H)(2)(H(2))] 1 (PNP = 1,3-bis(di-tert-butyl-phosphinomethyl)pyridine) catalyzes the anti-Markovnikov addition of pinacolborane to terminal alkynes yielding Z-vinylboronates at mild conditions. The complex [Ru(PNP)(H)(2)(HBpin)] 2 (HBpin = pinacolborane), which was identified at the end of the reaction and prepared independently, is proposed as the direct precursor to the catalytic cycle involving rearrangement of coordinated alkyne to Z-vinylidene as a key step for the apparent trans-hydroboration.
Data-driven model reduction and fault diagnosis for an aero gas turbine engine (2014)

In this paper, an aero gas turbine engine with three shafts are investigated. By employing data-driven method, a reduced-order model is obtained, which has the close output performance as the 14 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> -order full-order model. Based on the reduced-order model, a fault detection filter is designed to detect actuator faults and sensor faults for the system subjected to input and output noises. Genetic optimization algorithm is used to design the filter gains such that the residual signal is sensitive to the faults, but robust to process and sensor noises. Simulated results demonstrate the efficiency of the present algorithm.
An analysis of multiple correlation cancellation loops with a filter in the auxiliary path (1980)

A technique known as a "multiple correlation cancellation loop" and also as the "LMS algorithm" is widely used in adaptive arrays for radar, sonar, and communications, as well as in many other signal processing applications. In this paper an analysis of this technique is extended to the case when a linear filter appears in the auxiliary signal path. A general solution to this problem is obtained and several examples for narrow-band and broad-band signals are presented.
714. The preparation and reactions of some optically active substituted benzhydrols (1959)

R. T. Puckowski and W. A. Ross, J. Chem. Soc., 1959, 3555 DOI: 10.1039/JR9590003555
Querying non‐uniform image databases for biometrics‐related identification applications (2006)

Purpose This research project focuses on developing techniques and technologies for automatically identifying human faces from images in the situations where face sample collections in the database as well as in the input query images are “as is”, i.e. no standard data collection environment is available. The developed method can also be used in other biometric applications. Design/methodology/approach The specific method presented in this paper is called scale independent identification (SII). SII allows direct “comparison” between two images in terms of whether the two objects (e.g. faces) in the two images are the same object (i.e. the same individual). SII is developed by extensively using the matrix computation theory and in particular, the singular value decomposition theory. Findings It is found that almost all the existing methods in the literature or technologies in the market require that a normalization in scale be done before any identification processing. However, it is also found that normalization in scale not only adds additional processing complexity, but also may reduce the identification accuracy. In addition, it is difficult to anticipate an “optimal” scale in advance. The developed SII complements the existing methods in all these aspects. Research limitations/implications The only limitation which is also the limitation for many other biometric identification methods is that each object (e.g. individual in human face identification) must have a sufficient number of training samples collected before the method works well. Practical implications SII is particularly suitable in law enforcement and/or intelligence applications in which it is difficult or impossible to collect data in a standard, “clean” environment. Originality/value The SII method is new, and the paper should be interesting to researchers or engineers in this area, and should also be interesting to companies developing any biometrics‐based identification technologies as well as government agencies.
A discretized population balance for nucleation, growth, and aggregation (1988)

Abstract The population balance for batch aggregation of particulate suspensions is recast in a form that may be solved simply and accurately. The transformed equation is deduced with the introduction of only one additional parameter, which is found to be a constant for all cases. The transformed equation is tested by comparison with some analytical solutions with which it is found to be in excellent agreement. In particular, the equation is shown to predict correctly the rate of change of total particle number and volume. Compatible descriptions of linear growth and nucleation are developed with similar success. The method is then applied to modeling the in vitro growth and aggregation of kidney stones (calcium oxalate monohydrate crystals). It is found that these phenomena are well described by McCabe's Δ L law, a size‐independent coalescence kernel, and first‐order kinetics. Simulated particle size distributions and their moments are in excellent agreement with the experimental results.
The myth of persistence of vision revisited (1993)

Several years ago we wrote an article entitled The Myth of Persistence of Vi sion, which appeared in the Journal of the University Film Association in the fall of 1978 (Anderson and Fisher). In it we offered a considerable volume of evidence that the concept of was an inaccurate and inadequate expla nation for the apparent motion found in a motion picture. At the time we thought the article had laid the matter to rest. We had pronounced persistence of vision dead. And, frankly, we expected never to hear the term again, other than in a historical context.
Towards the quantitative control of crop production and quality. II. The scientific basis for guiding fertilizer and management practice, particularly in poorer countries (1992)

Abstract Mechanistic models are developed for the dissolution of lime and sparingly soluble phosphates, and for the volatilization of ammonia from urea. The models are verified experimentally and their practical importance assessed.
Impact of Sulfur Oxides on Mercury Capture by Activated Carbon (2007)

Recent field tests of mercury removal with activated carbon injection (ACI) have revealed that mercury capture is limited in flue gases containing high concentrations of sulfur oxides (SOx). In order to gain a more complete understanding of the impact of SOx on ACl, mercury capture was tested under varying conditions of SO2 and SO3 concentrations using a packed bed reactor and simulated flue gas (SFG). The final mercury content of the activated carbons is independent of the SO2 concentration in the SFG, but the presence of SO3 inhibits mercury capture even at the lowest concentration tested (20 ppm). The mercury removal capacity decreases as the sulfur content of the used activated carbons increases from 1 to 10%. In one extreme case, an activated carbon with 10% sulfur, prepared by H2SO4 impregnation, shows almost no mercury capacity. The results suggest that mercury and sulfur oxides are in competition for the same binding sites on the carbon surface.
A Multiagent System for Adaptive Power Flow Control in Electrical Transmission Systems (2014)

Large-scale integration of renewable energies causes a higher degree of volatility and uncertainty of power flows in the electrical transmission system in Europe, and thus a higher risk of cascading line outages possibly leading to blackouts. At the same time, the transformation of the power system into a cyber-physical system deploying evolved information and communication technology (ICT) solutions offers the opportunity to meet this challenge efficiently by intelligent control approaches instead of ample security reserves. In this paper, a novel approach for a distributed real-time coordination of power flow control is presented. For this, a multiagent system located decentrally at the substation level has been developed only relying on local measurements and interagent communication in contrast to global system models and centralized computations. Based on updated information received from neighboring agents, the agents quickly adapt to changing network situations and relieve overloads by coordinated action of power flow controlling (PFC) devices. For smoothing control behavior and for avoiding excitation of system oscillations, the extent of control actions also adapts to the severity of the network situation. For two study cases-examining the control system in the IEEE 39-bus 10-machine reference system and a large-scale model of the Western European transmission system-the performance of the multiagent system and ICT requirements is evaluated based on a co-simulation of the multiagent system and an electromechanical power system simulation.
Congestion Control and Adaptive Retransmission for Multimedia Streaming over Wireless Networks (2008)

In wireless networks, congestion control, alone, may not be enough to ensure good quality of multimedia streaming and efficient utilization of the network. Packet losses due to the high bit error rate not only degrade the multimedia quality, but render the current congestion control algorithms as inefficient: these algorithms back-off on every packet loss even when there is no congestion. In this paper we study the case of pre-recorded multimedia streaming over wireless networks. We integrate the congestion control schemes with an adaptive retransmission scheme in order to selectively retransmit some lost multimedia packets. Moreover, we integrate a wireless loss estimation scheme to improve the efficiency of congestion control. Our results show that the integrated scheme improves the multimedia quality due to the retransmission and recovery of some of the lost multimedia data. Moreover, the congestion control schemes, and hence the integrated retransmission scheme, show improved performance because of the wireless loss estimation.
Fundamental relations in the design of a VLF transmitting antenna (1958)

For a VLF flat-top antenna much smaller than the radian sphere (a sphere whose radius is one radianlength), the effective height, effective area, and effective volume are defined. The required power factor of radiation proportionately determines the effective volume. For a specified power to be radiated, the effective height inversely determines the current and the effective area inversely determines the voltage. For a limited electric gradient on the overhead wires, the current requires a proportionate area of conductor surface. A corresponding total length of wire in the flat top is adequate if disposed for uniform distribution of charge and if spread out to realize the required effective area. These objectives are obtained more readily by some configurations, such as long parallel wires or concentric circles of wire. This study has been made for the U. S. Navy's high-power transmitter to be located in Maine, the first to radiate 1 megawatt continuously at 15 kc.
Free-standing AlxGa1−xAs heterostructures by gas-phase etching of germanium (2010)

We outline a facile fabrication technique for the realization of free-standing AlxGa1−xAs heterostructures of arbitrary aluminum content. Utilizing xenon difluoride (XeF2) we rapidly and selectively remove a sacrificial germanium (Ge) underlayer in a room temperature gas-phase etching procedure. We demonstrate two possibilities for exploiting this unique process: (1) bulk micromachining of a suspended high-frequency low-dissipation micro-optomechanical resonator consisting of an epitaxial GaAs/AlAs multilayer grown on a Ge substrate and (2) epitaxial lift-off of a GaAs film via removal of an embedded Ge sacrificial layer, resulting in lateral etch rates up to 3 mm/h and a conservative selectivity of ∼106.
ChemInform Abstract: SYNTHESIS AND STRUCTURE OF PRODUCTS OF THE ALKYLATION OF PHOSPHORUS DIIODIDE BY ALKYL IODIDES (1981)

Abstract Alle in dieser Arbeit beschriebenen Synthesen werden in einer Inertgasat ‐ mosphäre sowie wasserfreien und Sauerstoff‐freien Lösungsmitteln durchgeführt.
Density Functional Studies of the Ground- and Excited-State Potential-Energy Curves of Stilbenecis-trans Isomerization (2002)

Using spin-unrestricted density functional theory (the VWN Becke-Perdew potential), including broken-symmetry and spin-projection methods, we have obtained the potential-energy curves as a function of the central torsional angle of stilbene in the ground (S0), the first excited triplet (T1), the first excited singlet (S1), and the doubly excited singlet (S2) states. The thermal trans-->cis isomerization of stilbene passes through a diradical broken-symmetry electronic structure around the twisted conformation (90 degrees central torsional angle) in the ground state. Our calculations support the proposed triplet mechanism for sensitized cis [symbol: see text] trans photoisomerization and the nonadiabatic singlet mechanism proposed by Orlandi and Siebrand. On the T1 potential-energy curve, the rotation of the C=C bond for both trans- and cis-stilbene will lead stilbene to the twisted conformation, from which the twisted stilbene will decay to the ground-state surface that is nearly isoenergetic with the T1 surface and has diradical electronic structure in the twisted region. On the S1 potential-energy curve, the energy increases in the direction from trans- to the twisted stilbene, and crosses with the neutral doubly excited S2 potential-energy curve, which has a minimum at the twisted structure and is lower in energy than the zwitterionic doubly excited state. The twisted stilbene around the energy minimum of the neutral doubly excited S2-state will decay onto the ground-state surface from where the rotation of the C=C bond leads the twisted stilbene to either the trans or cis configuration and the isomerization of stilbene is then completed. Similar studies have also been performed on a stilbene derivative with a substituent group, NHCOCH3.
An Interview with Patti Corbett of Ovid Technologies (2006)

Abstract This interview provides insights into the products and services offered by Ovid Technologies, Inc., a leading source of bibliographic and full-text content. Topics discussed include Ovid's SearchSolver(tm), LinkSolver(tm), Books@Ovid, cited articles, future trends, and predictions.
Antibacterial Properties of a Silver Chloride‐Coated Nylon Wound Dressing (1999)

The in vitro antimicrobial properties of this silver-coated nylon wound dressing are promising for future prevention of equine wound infections.
Susceptibility of Phenotypic Variants of Haemophilus influenzae Type b to Serum Bactericidal Activity: Relation to Surface Lipopolysaccharide (1986)

After three serial passages of Haemophilus influenzae type b strain Fuju in rats, we recovered a variant, which differed in colonial morphology, serum sensitivity, and lipopolysaccharide configuration from the parent strain. The parent organism (Fuju) appeared iridescent and transparent on Levinthal agar, and the rat-passaged variant (rat3 Fuju) appeared iridescent and opaque. The transparent, parent strain Fuju was sensitive to the complement-mediated bactericidal activity of normal rat serum, and the opaque, rat-passaged strain rat3 Fuju was serum resistant. Serum killing of the serum-sensitive strain appeared to be mediated by the classic complement pathway. Both serum-resistant and serum-sensitive strains were killed equally well by immune rat and human serum. These two strains did not differ in the amount of capsular polysaccharide that they elaborated nor in their major outer membrane protein patterns on SDS-PAGE. Lipopolysaccharide isolated from these two strains demonstrated different electrophoretic mobility patterns. Furthermore, the organisms showed different reactivities with two monoclonal antibodies directed against determinants of Hib lipopolysaccharide. Thus, the difference in susceptibility to complement-mediated bactericidal activity of normal rat serum displayed by these two strains is associated with their phenotypes, appears to be unrelated to differences in major outer membrane proteins or in the amounts of capsular polysaccharide elaborated, and is associated with differences in surface lipopolysaccharides.
Multipole-accelerated capacitance extraction algorithms for 3-D structures with multiple dielectrics (1992)

The authors describe how to extend the multiple-accelerated boundary-element method for 3-D capacitance computation to the case where conductors are embedded in an arbitrary piecewise-constant dielectric medium. Results are presented to demonstrate that the method is accurate, has nearly linear computational growth, and can be nearly two orders of magnitude faster than the standard boundary-element method based on matrix factorization.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
On Evaluating MHC-II Binding Peptide Prediction Methods (2008)

Choice of one method over another for MHC-II binding peptide prediction is typically based on published reports of their estimated performance on standard benchmark datasets. We show that several standard benchmark datasets of unique peptides used in such studies contain a substantial number of peptides that share a high degree of sequence identity with one or more other peptide sequences in the same dataset. Thus, in a standard cross-validation setup, the test set and the training set are likely to contain sequences that share a high degree of sequence identity with each other, leading to overly optimistic estimates of performance. Hence, to more rigorously assess the relative performance of different prediction methods, we explore the use of similarity-reduced datasets. We introduce three similarity-reduced MHC-II benchmark datasets derived from MHCPEP, MHCBN, and IEDB databases. The results of our comparison of the performance of three MHC-II binding peptide prediction methods estimated using datasets of unique peptides with that obtained using their similarity-reduced counterparts shows that the former can be rather optimistic relative to the performance of the same methods on similarity-reduced counterparts of the same datasets. Furthermore, our results demonstrate that conclusions regarding the superiority of one method over another drawn on the basis of performance estimates obtained using commonly used datasets of unique peptides are often contradicted by the observed performance of the methods on the similarity-reduced versions of the same datasets. These results underscore the importance of using similarity-reduced datasets in rigorously comparing the performance of alternative MHC-II peptide prediction methods.
Advanced Nanofabrication Technologies for Making Photo-Response Devices Based on Emerging Layered Transition Metal Dichalcogenides. (2016)

Emerging layered semiconductor materials, such as layered transition metal dichalcogenides (TMDCs), have exhibited attractive optoelectronic properties and hold a significant potential to be implemented for making new photoresponse devices. However, to realize working TMDC-based photoresponse devices for practical photovoltaic and photodetection applications, we need to (i) create new nanofabrication and nanomanufacturing technologies capable of producing TMDC devices with deterministic properties, architectures, and arrangements, (ii) develop new materials processing approaches capable of modulating various TMDCs to enable different device applications, and (iii) advance the device physics for understanding and leveraging the unique photonic properties of layered semiconductors. The research works presented in this thesis sought to advance the scientific/technical knowledge toward addressing the needs mentioned above and specifically focused on three relevant topics: (1) invention and demonstration of plasma-assisted transfer nanoprinting technology capable of producing orderly arranged layered material structures into device sites; (2) development and study of plasma-assisted doping processes, which can result in permanently stable doping effects in layered semiconductors; (3) characterization of a series of photoresponse devices based on emerging layered transition metal dichalcogenides (TMDCs), which were fabricated using various techniques, including plasma-assisted doping, stacking of graphene-TMDC heterostructures, and thin-film-metal-induced surface charge transfer (SCT) doping. The presented works have advanced the scientific knowledge and technical capability toward realizing working TMDC-based photoresponse devices for practical photovoltaic and photodetection applications. Additionally, the nanofabrication approaches developed in these works can be generally used for making other TMDC-based nanoelectronic and photonic devices, and the obtained device physics knowledge is anticipated to greatly leverage the uniquely advantageous optoelectronic properties of semiconducting TMDCs for enabling new device applications.
Protein Acetylation in the Cardiorenal Axis (2010)

Acetylation of histone and nonhistone proteins provides a key mechanism for controlling signaling and gene expression in heart and kidney. Pharmacological inhibition of protein deacetylation with histone deacetylase (HDAC) inhibitors has shown promise in preclinical models of cardiovascular and renal disease. Efficacy of HDAC inhibitors appears to be governed by pleiotropic salutary actions on a variety of cell types and pathophysiological processes, including myocyte hypertrophy, fibrosis, inflammation and epithelial-to-mesenchymal transition, and occurs at compound concentrations below the threshold required to elicit toxic side effects. We review the roles of acetylation/deacetylation in the heart and kidney and provide rationale for extending HDAC inhibitors into clinical testing for indications involving these organs.