gebhart/patrepeval huggingface dataset:
Chronic recordings from single sites of kitten striate cortex during experience-dependent modifications of receptive-field properties (1989)

1. With the use of chronically implanted floating microelectrodes, we obtained simultaneous single-unit recordings from multiple sites in the kitten striate cortex and followed experience-dependent modifications of receptive-field properties. For induction of experimental modifications, we used the paradigm of monocular deprivation and reverse occlusion. Kittens were implanted when 4-5 wk old. During the following 2 days, receptive-field properties of the recorded units were determined once under light ketamine anesthesia and repeatedly while the kittens were awake and only lightly restrained. Subsequently, one eye was patched, and the resulting changes in neuronal eye preference were followed by repeated measurements of response properties. For investigation of the effects of reverse occlusion, the deprived eye was opened and the previously open eye closed when the neurons had become unresponsive to the initially deprived eye. Alternatively, kittens were monocularly deprived for 1 wk by lid suture before implantation. The closed eye was then opened, the other eye patched, and the effects of reverse occlusion were studied for up to 1 wk by repeated measurements of receptive-field properties. 2. The earliest effect of monocular deprivation was the disappearance of binocular summation, i.e., binocular responses ceased to be superior over monocular responses. Overt changes of ocular dominance were observed as early as 6 h after the beginning of monocular deprivation. These consisted of a gradual decrease of the excitatory response to deprived eye stimulation and, on occasions, of an additional moderate increase of responses to the normal eye. A complete loss of excitatory responses to deprived-eye stimulation was seen as early as 12 h after occlusion. In numerous cells, however, stimulation of the deprived eye continued to evoke inhibitory responses even after excitatory responses had vanished completely. During this shift in ocularity, neurons preserved their orientation and direction selectively. 3. The minimal time required for the manifestation of ocular dominance changes was similar regardless of whether the animals were stimulated continuously or were asleep part of the time, suggesting the existence of an experience-independent consolidation period for ocular dominance changes. 4. The first change after reverse occlusion was a reduction of the response to the newly deprived eye. The time course of this inactivation was similar to that observed after initial deprivation, whereas the recovery of responses to the previously deprived eye had a considerably slower time course.(ABSTRACT TRUNCATED AT 400 WORDS)
Fluid Detection by Spectral Decomposition – Lessons from Numerical, Physical Modelling and Field Studies (2007)

F018 Fluid Detection by Spectral Decomposition – Lessons from Numerical Physical Modelling and Field Studies J. Zhang* (University of Edinburgh) M. Chapman (British Geological Survey) E. Liu (British Geological Survey) X.Y. Li (British Geological Survey) S. Wang (China University of Petroleum) & Z. Liu (CNPC Science & Technology Dept.) SUMMARY This paper investigates the use of spectral decomposition techniques to detect fluid saturation through studies on field data physical modelling data and numerical modelling. The main mechanisms which control the spectral response are fluid-sensitive tuning together with attenuation and dispersion for reflected waves. In many cases the direct transmission loss
Analysis on the Construction of College English Teaching Evaluation System Based on Online Learning Platform (2020)

With the rapid development of network information technology, it has been widely used in various fields. Of course, in the field of education is no exception. In college English teaching, the application of online learning platform can effectively improve the quality of college students’ English learning and teaching effect. Starting from the importance of the construction of college English teaching evaluation system based on online learning platform, this paper puts forward the measures for the construction of college English teaching evaluation system for reference.
Covalently functionalized graphene as a supercapacitor electrode material (2018)

The need for efficient, lightweight, flexible, stable and eco-friendly portable electric power delivery has placed research on supercapacitor electrode materials at the forefront of endeavors to provide future energy storage. Graphene-based materials and composites have been shown to be promising materials toward this goal. In this review, we describe recent progress in the development of electrode materials by the covalent functionalization of graphene. Covalent graphene derivatives are an emerging and potentially large class of very efficient materials, whose structural and physicochemical properties can be tailored according to the specific needs of capacitive charge storage. They also open doors to new composites and hybrids, which may further advance the field-encoding properties and other features as yet unexplored.
Low-output-impedance class AB bipolar voltage buffer (1997)

A new ±1.5V class AB bipolar voltage buffer that can drive low load impedance is presented. A current compensation technique is used for achieving a low output impedance, resulting in a large unitary gain bandwidth and low distortion. Simulation results are included demonstrating the circuit performance.
Complex Ica For Circular And Non-Circular Sources (2005)

Publication in the conference proceedings of EUSIPCO, Antalya, Turkey, 2005
Effects of microtubule inhibitors on etoposide accumulation and DNA damage in human K562 cells in vitro. (1987)

The effects of microtubule inhibitors on cellular accumulation of 4'-demethylepipodophyllotoxin-9-(4,6-O-ethylidine-beta-D-glu copyranoside) (VP-16) and subsequent epipodophyllotoxin-induced DNA single-strand breaks were investigated in human leukemia K562 cells. At concentrations of 0.05-20 microM, vinblastine, vincristine, and maytansine similarly increased the steady-state cell concentration of VP-16 (2.5 microM) up to 2-fold. Following removal of extracellular vinblastine, the elevation of cell VP-16 was maintained through an additional 55-min incubation period. Washing cells free of extracellular VP-16 resulted in a nonexchangeable (or bound) component comprising 15-17% of the VP-16 concentration found before removal of extracellular drug. In cells incubated with VP-16 alone, removal of extracellular drug resulted in less than 5% cell retention of drug. At vinblastine concentrations of 0.05-0.2 microM, the increase in cell VP-16 was due to a progressive increase in nonexchangeable VP-16. At greater vinblastine concentrations, up to 10 microM, there was no further increase in nonexchangeable VP-16 but there was a 1.6-fold increase in the exchangeable (or free) concentration of VP-16. Similar elevation of both nonexchangeable and exchangeable VP-16 by 10 microM vincristine and maytansine was observed; however, 50-100 microM podophyllotoxin or taxol was required for comparable elevation of exchangeable drug with no increase of nonexchangeable VP-16. Elevation of exchangeable VP-16 in the presence of vinblastine was due to inhibition of the unidirectional efflux of this epipodophyllotoxin with a 69% decline in the rate constant for efflux. There were no effects of vinblastine on VP-16 influx. There was no enhancement of DNA single-strand break frequency when cells were incubated with 2.5 microM VP-16 and 0.2 microM vinblastine, a concentration of the Vinca alkaloid that increased only nonexchangeable VP-16. VP-16-induced DNA damage was enhanced by vinblastine concentrations above 0.5 microM, concentrations that elevated exchangeable VP-16, with a maximum doubling of radiation equivalent single-strand break frequency observed with 20 microM vinblastine, consistent with the maximum elevation of cell VP-16 with 20 microM Vinca alkaloid. These results indicate that vinblastine and other microtubule inhibitors elevate cell VP-16 by inhibition of the efflux of exchangeable drug and by increasing the level of nonexchangeable drug. Potentiation of VP-16-induced DNA damage is observed only at microtubule inhibitor concentrations which elevate exchangeable VP-16.(ABSTRACT TRUNCATED AT 400 WORDS)
Effects of methionine on endogenous antioxidants in the heart (1999)

The deficiency of methionine, an essential amino acid, is associated with cardiovascular lesions. Because different types of cardiac pathologies are caused by a decrease in antioxidants, we examined the effects of methionine on myocardial antioxidant enzymes in hemodynamically assessed rats that were treated with methionine (10 mg/ml) in drinking water for 12, 24, and 48 h. Glutathione peroxidase (GSHPx) activity was significantly increased to 150.5 +/- 12.2 and 191.7 +/- 13.7% of the control value at 12 and 24 h, respectively, followed by a decline to 120 +/- 24.6% at 48 h. The mRNA levels of GSHPx at these time points were 151.2 +/- 12.0, 218.7 +/- 35.3, and 173.5 +/- 25.2%, respectively. Superoxide dismutase (SOD) activity was 144.3 +/- 3.7, 114.3 +/- 10.1, and 143.1 +/- 11. 2% at 12, 24, and 48 h, respectively. Catalase (Cat) activity was 272.4 +/- 5.4, 237.8 +/- 16.6, and 224.1 +/- 17.3% of the control value. The expression of Cat and SOD mRNA was unchanged at 12, 24, and 48 h. The lipid peroxidation was decreased by 24.4 +/- 11.2, 54. 9 +/- 0.1, and 6.4 +/- 2.1% at 12, 24, and 48 h, respectively. Methionine had no effect on the ventricular or aortic pressures, heart rate, and myocardial glutathione levels at any of the time points. The study shows that methionine has a significant effect on the myocardial antioxidant enzyme activities, and only changes in GSHPx enzyme activity correlated with the mRNA changes. These antioxidant changes may have a role in the beneficial effects of methionine in pathological rather than physiological conditions.
The necessity of a clinical perspective in the design of computer prostheses (1991)

Chief of Neuropsychology, Lankenau Hospital, President, Bergman/Gordon Associates, Inc., Bala Cynwyd, Pennsylvania
Direct mesh: a multiresolution approach to terrain visualization (2004)

Terrain can be approximated by a triangular mesh consisting millions of 3D points. Multiresolution triangular mesh (MTM) structures are designed to support applications that use terrain data at variable levels of detail (LOD). Typically, an MTM adopts a tree structure where a parent node represents a lower-resolution approximation of its descendants. Given a region of interest (ROI) and a LOD, the process of retrieving the required terrain data from the database is to traverse the MTM tree from the root to reach all the nodes satisfying the ROI and LOD conditions. This process, while being commonly used for multiresolution terrain visualization, is inefficient as either a large number of sequential I/O operations or fetching a large amount of extraneous data is incurred. Various spatial indexes have been proposed in the past to address this problem, however level-by-level tree traversal remains a common practice in order to obtain topological information among the retrieved terrain data. A new MTM data structure called direct mesh is proposed. We demonstrate that with direct mesh the amount of data retrieval can be substantially reduced. Comparing with existing MTM indexing methods, a significant performance improvement has been observed for real-life terrain data.
Estimation of Infiltration and Simulation of Seepage Behavior in Slope using the Rainfall Data in Seoul (2008)

Precipitation on slope is separated into infiltration and outflow according to physical properties of soil and slope. However, the slope analysis is assumed that all precipitation are percolated. So, groundwater level is excessive tend to be calculated. In this paper, NRCS model and Horton models that have a suitability were used for agro-type analysis of Seoul station after precipitation was separated into infiltration and outflow. Also, gradient of slope was analyzed about seepage behavior and underground water level aspect through numerical analysis. After inclination correction, the estimated infiltration was compose of slopes much applied by domestic design standard. The change of groundwater level is appeared greatly as agro-type goes from D type to A type in the analysis results.
Containment Control of Multi-Agent Systems with Dynamic Leaders Based on a $PI^n$-Type Approach (2014)

This paper studies the containment control problem of multi-agent systems with multiple dynamic leaders in both the discrete-time domain and the continuous-time domain. The leaders' motions are described by $(n-1)$-order polynomial trajectories. This setting makes practical sense because given some critical points, the leaders' trajectories are usually planned by the polynomial interpolations. In order to drive all followers into the convex hull spanned by the leaders, a $PI^n$-type ($P$ and $I$ are short for {\it Proportion} and {\it Integration}, respectively; $I^n$ implies that the algorithm includes high-order integral terms) containment algorithm is proposed. It is theoretically proved that the $PI^n$-type containment algorithm is able to solve the containment problem of multi-agent systems where the followers are described by any order integral dynamics. Compared with the previous results on the multi-agent systems with dynamic leaders, the distinguished features of this paper are that: (1) the containment problem is studied not only in the continuous-time domain but also in the discrete-time domain while most existing results only work in the continuous-time domain; (2) to deal with the leaders with the $(n-1)$-order polynomial trajectories, existing results require the follower's dynamics to be $n$-order integral while the followers considered in this paper can be described by any-order integral; and (3) the "sign" function is not employed in the proposed algorithm, which avoids the chattering phenomenon. Furthermore, in order to illustrate the practical value of the proposed approach, an application, the containment control of multiple mobile robots is studied. Finally, two simulation examples are given to demonstrate the effectiveness of the proposed algorithm.
Methods of combining multiple classifiers and their applications to handwriting recognition (1992)

Possible solutions to the problem of combining classifiers can be divided into three categories according to the levels of information available from the various classifiers. Four approaches based on different methodologies are proposed for solving this problem. One is suitable for combining individual classifiers such as Bayesian, k-nearest-neighbor, and various distance classifiers. The other three could be used for combining any kind of individual classifiers. On applying these methods to combine several classifiers for recognizing totally unconstrained handwritten numerals, the experimental results show that the performance of individual classifiers can be improved significantly. For example, on the US zipcode database, 98.9% recognition with 0.90% substitution and 0.2% rejection can be obtained, as well as high reliability with 95% recognition, 0% substitution, and 5% rejection.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
A Simple Method for Fabricating Polymeric Light-Emitting Diodes (1998)

A simple, inexpensive method involving chemical deposition of silver metal onto a polymer layer by noncatalytic chemical reduction from silver nitrate solution is used in the fabrication of polymeric light-emitting diodes (LEDs). The method yielded silver films with good polymer/metal interfaces and the resulting LEDs emitted light uniformly over the entire device area, but the emission efficiencies were lower by an order of magnitude compared to LEDs with vacuum-deposited metal electrodes. The chemical deposition of the metal film was carried out on a lab bench in open air without any special precautions. In addition to its cost advantage over vacuum deposition methods, the chemical process may also allow fabrication of polymer LEDs on nonflat and/or large area substrates.
Study of the growth characteristics of sputtered Cr thin films (1990)

The crystallographic texture of Cr film deposited on glass substrates is found to depend on the film thickness dCr and the substrate temperature Ts. Without substrate preheating, only the Cr {110} peak was observed in the x-ray diffraction spectra for films between 60 and 400 nm in thickness. With increasing Ts (by substrate preheating), the Cr{200} peak became observable at progressively increasing intensity, whereas the intensity of the {110} peak decreased. Consequently the 170-nm-thick films deposited at Ts ≥200 °C are predominantly {100} textured. However, even for these high Ts values (≥200 °C), the {110} peak intensity increases with increasing film thickness. Larger film thickness values are required at higher Ts for the {110} texture to overcome the {100} texture. The grain size of the Cr films deposited on glass increases with film thickness and with substrate temperature.
A novel DnaA protein‐binding site at 94.7 min on the <i>Escherichia coli</i> chromosome (1996)

There is a DNA sequence which has unusually high affinity for the DnaA protein of Escherichia coli between the glyV and amiB-mutL operons at 94.7 min on the genetic map. Affinity of DnaA protein for DNA was measured in vivo as the activity of beta-galactosidase produced from the lacZ gene on a plasmid fused to the 5'-terminal portion of the mioC gene, which is under the control of the DnaA protein. The chromosomal DNA segment between the two operons, carried on a compatible plasmid, derepressed the beta-galactosidase activity by titrating DnaA protein. Derepression occurred on the chromosomal dnaA gene as well, since it is autoregulated. Hence, as measured by immunoassays, one plasmid molecule carrying the DnaA-binding region titrated 370 dnaA molecules, which is a value eightfold higher than that for a plasmid containing the oriC region. We estimate that about 60% of the total cellular DnaA molecules are bound to this site. Four DnaA-binding sequences (DnaA boxes) and a DnaA-regulated promoter directing transcription of two small genes were present within a 250 bp stretch in this region but additional long DNA regions, including the fifth DnaA box located about 650 bp downstream, were required for maximum binding. A role for the DnaA-binding site in controlling DnaA-protein concentration in the cell cycle is discussed.
First-principles ionicity scales. I. Charge asymmetry in the solid state (1993)

Using a measure of the asymmetry of the valence charge distribution in ${\mathit{A}}^{\mathit{N}}$${\mathit{B}}^{8\mathrm{\ensuremath{-}}\mathit{N}}$ compounds, a mapping to Phillips's ionicity scale is achieved.
High Efficiency Near-IR Emission of Nd(III) Based on Low-Vibrational Environment in Cages of Nanosized Zeolites (2000)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTHigh Efficiency Near-IR Emission of Nd(III) Based on Low-Vibrational Environment in Cages of Nanosized ZeolitesYuji Wada, Tatsuya Okubo, Munenori Ryo, Toru Nakazawa, Yasuchika Hasegawa, and Shozo YanagidaView Author Information Material and Life Science, Graduate School of Engineering Osaka University, Suita, 565-0871, Osaka, Japan PRESTO, JST and Department of Chemical System Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan Department of Chemical System Engineering The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656, Japan Cite this: J. Am. Chem. Soc. 2000, 122, 35, 8583–8584Publication Date (Web):August 18, 2000Publication History Received9 June 2000Published online18 August 2000Published inissue 1 September 2000https://pubs.acs.org/doi/10.1021/ja0020557https://doi.org/10.1021/ja0020557rapid-communicationACS PublicationsCopyright © 2000 American Chemical SocietyRequest reuse permissionsArticle Views1114Altmetric-Citations131LEARN 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 SUBJECTS:Cations,Colloids,Granular materials,Particulate matter,Zeolites Get e-Alerts
Promoter Hypermethylation as an Independent Prognostic Factor for Relapse in Patients with Prostate Cancer Following Radical Prostatectomy (2005)

Methylation status of selected genes in the prostate cancer specimen may predict for time to recurrence in Gleason 3 + 4 = 7 patients undergoing prostatectomy. These results should be validated in a larger and unselected cohort.
Evaluation of a two-phase debris flow model using field data from the Swiss Alps (2004)

We compared a new two-phase model (DBF-1D) of debris flow behavior with front velocity and flow depth data from two automated debris flow observation stations in Switzerland. The depth averaged mass, volume and momentum equations are written for the solid and fluid phases, which are coupled by a momentum transfer function. The Voellmy-fluid flow relation is used to calculate the flowing friction of the debris flow, treating the solid phase as a variably saturated Coulomb-type material. The frictional behavior of the fluid phase is described by a Chezy-type relation. To further constrain parameters used in the model, we estimated the momentum exchange coefficient using video analysis of large (D&gt;0.5m) boulders traveling within coarse and muddy debris flows at the Illgraben observation station. Overall, this two phase approach provides a good approximation of the 1-dimensional behavior of debris flows, while taking into account the complex interactions between solids and fluids. Key words: debris flows, two-phase model, Voellmy-fluid, comparison with field data
Importance of the vestibular system in visually induced nausea and self-vection (1999)

The objective of this study was to determine the importance, if any, of the non-auditory labyrinth of the inner ear in visually induced nausea and self-vection in subjects exposed to a moving visual field with and without concomitant pitching head movements. Subjects treated were 15 normals, 18 unilateral labyrinthectomies and 6 bilateral labyrinthectomies. The findings show a higher incidence of pseudo-Coriolis induced nausea in normal subjects compared to unilateral and bilateral labyrinthectomized subjects. When the subjects were exposed to the moving visual field only (no head movement), pronounced self-vection occurred in all subjects, but with earlier onset in the bilateral labyrinthine defective subjects as compared to normal and unilateral defective subjects. The subjective intensities of self-vections reported by labyrinth-defectives were much more pronounced as compared to normal subjects, and it is apparent that visual input in these subjects achieves much more importance in maintaining compensatory eye movements, and the gain of neck reflexes is enhanced. The findings that visual stimulation is more effective in producing the disabling effects after labyrinthine destruction could possibly be explained by enhancement of vision after loss of labyrinthine sensory input, and the gain in neck reflexes is also enhanced after labyrinthectomy.