gebhart/patrepeval huggingface dataset:
A Step Towards the Automated Diagnosis of Parkinson's Disease: Analyzing Handwriting Movements (2015)

Parkinson's disease (PD) has affected millions of people world-wide, being its major problem the loss of movements and, consequently, the ability of working and locomotion. Although we can find several works that attempt at dealing with this problem out there, most of them make use of datasets composed by a few subjects only. In this work, we present some results toward the automated diagnosis of PD by means of computer vision-based techniques in a dataset composed by dozens of patients, which is one of the main contributions of this work. The dataset is part of a joint research project that aims at extracting both visual and signal-based information from healthy and PD patients in order to go forward the early diagnosis of PD patients. The dataset is composed by handwriting clinical exams that are analyzed by means of image processing and machine learning techniques, being the preliminary results encouraging and promising. Additionally, a new quantitative feature to measure the amount of tremor of an individual's handwritten trace called Mean Relative Tremor is also presented.
Identifying the effective phosphorous species over modified P-ZSM-5 zeolite: a theoretical study (2018)

In this work, a density functional theory (DFT) study was carried out to address the fundamental description of the effective phosphorous species that could improve the framework stability and reduce the coke deposition formation on the P-ZSM-5 zeolite. On the basis of the dealumination barriers of ZSM-5 with all the possible phosphorous species bound on the zeolite framework, PO4H4 was ascertained to be the effective phosphorous species that could improve the ZSM-5 zeolite hydrothermal stability and reduce its acid strength. Apart from this, the olefin polymerization reaction is the main cause of coking deactivation for ZSM-5. Thus, the effect of the modification P-ZSM-5 on the reactivity of light olefins dimerization was also studied. Compared to the unmodified ZSM-5, the activation energy of the rate-limiting step of ethylene dimerization was increased from 20.3 kcal mol-1 to 34.6 kcal mol-1, thereby apparently inhibiting ethylene dimerization and improving the resistance to coke deposition for P-ZSM-5. Our calculation results should provide a beneficial theoretical guide for designing and improving a catalyst for the methanol-to-olefins process and bioethanol dehydration.
Effects of Cy to sine Arabino side-Impregnated Bioerodible Polymers on Glaucoma Filtration Surgery in Rabbits (1993)

A prospective, randomized double-masked placebo-controlled study was performed to determine the effects of a bioerodible polymer containing cytosine arabinoside (Ara-C) on the success of full thickness filtration surgery in 21 rabbits. The polymer was a polyanhydride composed of bis(pcarboxyphenoxy) propane and sebacic acid. The polymer and Ara-C (1 mg by weight) were combined and compressed into discs 3-mm and 1-mm thick. Control polymers contained no Ara-C. Posterior lip sclerectomy surgery was performed bilaterally, with one eye randomly receiving the polymer with the Ara-C and the fellow eye receiving the control polymer. All eyes were examined on the first postoperative day and every other day thereafter. Intraocular pressures (IOPs) were found to be significantly lower (p < 0.04) in the experimental eyes during the 5th through the 15th postoperative day, with the mean difference ranging from 3.5 to 6.0 mm Hg. The median number (+/-SE) of days until failure of the filters was 10.5 (+/-0.66) days in the control group and 15.2 (+/-1.94) days in the experimental group, the difference being statistically significant. There were no significant differences between the groups with regard to conjunctival injection, corneal epithelial defects, anterior chamber inflammation, lens changes, or intraoperative or postoperative complications. This study suggests that polymer drug delivery of Ara-C may be a safe and efficacious adjunct in temporarily increasing the success rate of glaucoma filtering surgery in a rabbit model.
Learning De-biased Representations with Biased Representations (2019)

Many machine learning algorithms are trained and evaluated by splitting data from a single source into training and test sets. While such focus on in-distribution learning scenarios has led to interesting advancement, it has not been able to tell if models are relying on dataset biases as shortcuts for successful prediction (e.g., using snow cues for recognising snowmobiles), resulting in biased models that fail to generalise when the bias shifts to a different class. The cross-bias generalisation problem has been addressed by de-biasing training data through augmentation or re-sampling, which are often prohibitive due to the data collection cost (e.g., collecting images of a snowmobile on a desert) and the difficulty of quantifying or expressing biases in the first place. In this work, we propose a novel framework to train a de-biased representation by encouraging it to be different from a set of representations that are biased by design. This tactic is feasible in many scenarios where it is much easier to define a set of biased representations than to define and quantify bias. We demonstrate the efficacy of our method across a variety of synthetic and real-world biases; our experiments show that the method discourages models from taking bias shortcuts, resulting in improved generalisation. Source code is available at this https URL.
Detection, Recognition and Location of Partial Discharge Sources Using Acoustic Emission Method (2012)

The acoustic emission (AE) is a group of phenomena involving generation of transient elastic (acoustic or vibro-acoustic) waves, resulting from liberation of intermolecular bond energy (deformation, cracking, phase transitions). This fact contributed to elaboration of the acoustic emission method, which is widely used in: (i) diagnostics of cutting tools and machine cutting process, (ii) machinery and civil structures condition assessment, (iii) fatigue and fracture materials research, (iv) detection of material defects, (v) orogenic and earthquake prediction research, (vi) rockbursts prediction in deep mines and (vii) in chemical reactions and phase transitions research. This method is also applied in electrical power engineering for detection and location of partial discharge (PD) sources in insulation system of large power transformers and GIS/GIL (Gas Insulated Substations/Gas Insulated transmission Lines).
A gentle introduction to OSGi (2008)

The Open Services Gateway Initiative (OSGi) is a framework that supports the implementation of component-based, service-oriented applications in Java. The framework man- ages the life-cycle of modules (called bundles in OSGi) and provides means to publish and search for services. Moreover, it supports the dynamic install and uninstall of bundles. Nowadays, OSGi is used in many application domains, including mobile phones, embedded devices, and application servers. In this paper, we provide a gentle introduction to the basic services provided by OSGi. The presentation is guided by a simple case study, involving the implementation of a Dictionary System.
Einleitung (1999)

Mit dem weltweit beobachtbaren Prozeß der Demokratisierung, der in den siebziger Jahren mit den Transitionen in Südeuropa begann, sich in der Ablösung von Militär- und Entwicklungsdiktaturen in Lateinamerika, Afrika und Südostasien fortsetzte, das Apartheidregime in Südafrika beendete und 1989 in 'sanften' Revolutionen gegen die sozialistischen Systeme Mittel-und Osteuropas gipfelte, sind in vielen Ländern neue politische Regime entstanden. Doch die Konsolidierung dieser meist noch fragilen Demokratien ist angesichts der multiplen Herausforderungen, denen sie ausgesetzt sind, nicht selbstverständlich: Zu ihrer Stabilisierung und Effektivierung müssen simultan die neuen politischen, sozialen, territorialen und ökonomischen Institutionen verfestigt werden.
A low-droop sample-and-hold circuit (1980)

A description is presented of a new analogue sample-and-hold circuit. For the same hold time the memory volatility is improved by an order of magnitude compared with other sample-and-hold circuits. This circuit will provide hold times of a few minutes duration with an error of less than 1%, when the sampling or acquisition time is less than one millisecond. Another source of error due to the capacitive feedthrough of the sampling switch, common to all other sample-and-hold circuits, can be eliminated using the new circuit.
Paralleled hardware annealing for optimal solutions on electronic neural networks (1993)

Three basic neural network schemes have been extensively studied by researchers: the iterative networks, the backpropagation networks, and the self-organizing networks. Simulated annealing is a probabilistic hill-climbing technique that accepts, with a nonzero but gradually decreasing probability, deterioration in the cost function of the optimization problems. Hardware annealing, which combines the simulated annealing technique with continuous-time electronic neural networks by changing the voltage gain of neurons, is discussed. The initial and final voltage gains for applying hardware annealing to Hopfield data-conversion networks are presented. In hardware annealing, the voltage gain of output neurons is increased from an initial low value to a final high value in a continuous fashion which helps to achieve the optimal solution for an optimization problem in one annealing cycle. Experimental results on the transfer function and transient response of electronic neural networks achieving the global minimum are also presented.
THE EFFECT OF INTENSIVE SHEEP STOCKING OVER A FIVE‐YEAR PERIOD ON THE DEVELOPMENT AND PRODUCTION OF THE SWARD (1966)

A study of a sward sown to Lolium perenne and Trifolium repens was made so that the inter‐relationship of the plant and animal communities might be more fully understood within the context of a sheep husbandry experiment. At the higher of 2 stocking rates intensive grazing induced the grass species to assume a prostrate growth habit in the first year: at the lower rate of stocking this condition was less prevalent. The only species to invade the sward and make progress over the 5 years were Poa annua, P. trivialis. and Agrostis stolonifera . Some control of A. stohnifera was gained when grazed swards were cut for silage. The Poa species eventually made up about 50% of the ground cover of all swards.
Monte Carlo Simulation for the Structure of Polyolefins Made with Two Metallocene Catalysts in a Batch Reactor (2006)

The synthesis of polyolefins with two metallocene catalysts is explored via a simple Monte Carlo simulation in the two cases of a batch and a semibatch reactor. The algorithm we develop can be applied, in principle, to an arbitrary number of catalysts with different propensities toward the formation of long chain branches. We compare our model to an experimental two-catalyst system, in which one of the catalysts makes only linear chains and the ratio of the two catalysts is varied, to synthesize a series of different molar mass resins. Results from our simulations show good agreement with experimentally measured molecular weight distributions, the ratio of unsaturated to saturated chain ends (found by 13C NMR) and the number of branches per 10000C. We also examine the effect on the amount of branching when molecular hydrogen gas is added to the system to act as a chain transfer agent.
A Sparse and Locally Shift Invariant Feature Extractor Applied to Document Images (2007)

We describe an unsupervised learning algorithm for extracting sparse and locally shift-invariant features. We also devise a principled procedure for learning hierarchies of invariant features. Each feature detector is composed of a set of trainable convolutional filters followed by a max-pooling layer over non-overlapping windows, and a point-wise sigmoid non-linearity. A second stage of more invariant features is fed with patches provided by the first stage feature extractor, and is trained in the same way. The method is used to pre-train the first four layers of a deep convolutional network which achieves state-of-the-art performance on the MNIST dataset of handwritten digits. The final testing error rate is equal to 0.42%. Preliminary experiments on compression of bitonal document images show very promising results in terms of compression ratio and reconstruction error.
Exploration of text collections with hierarchical feature maps (1997)

article Free Access Share on Exploration of text collections with hierarchical feature maps Author: Dieter Merkl Department of Computer Science, Royal Melbourne Institute of Technology, 723 Swanston St., Carlton, VIC 3053, Australia and Institut für Softwaretechnik, Technische Universität Wien, Resselgasse 3/188, A-1040 Vienna, Austria Department of Computer Science, Royal Melbourne Institute of Technology, 723 Swanston St., Carlton, VIC 3053, Australia and Institut für Softwaretechnik, Technische Universität Wien, Resselgasse 3/188, A-1040 Vienna, AustriaView Profile Authors Info & Claims ACM SIGIR ForumVolume 31Issue SIDecember 1997pp 186–195https://doi.org/10.1145/278459.258564Published:01 July 1997Publication History 39citation1,023DownloadsMetricsTotal Citations39Total Downloads1,023Last 12 Months39Last 6 weeks2 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF
Intrinsic viscosity‐number average molecular weight relationship for poly (n‐Octadecyl acrylate) and poly (N‐n‐octadecylacrylamide) (1966)

Abstract Intrinsic viscosity‐number average molecular weight relationships have been measured, at 30C in benzene, for poly (n‐octadecyl acrylate) as [॑]=2.72ȕ10 蜢4 Mn 0.638 and for poly (N‐n‐octadecylacrylamide) as [॑]=0.82ȕ10 蜢4 Mn 0.676 . Whole polymers of various molecular weights were prepared in benzene solution at 65C with dodecyl mercaptan as primary regulator. By the use of these parameters, the molecular weight of such polymers and their homologs may now be measured by simple solution‐viscosity determinations. In the expression { } (relating degrees of polymerization { } to the mercaptan/monomer ratio), intercept { } and apparent transfer constant C s for n‐octadecyl acrylate were 6.28ȕ10 蜢3 and 0.68; for N‐n‐octadecylacrylamide 1.10ȕ10 蜢3 and 0.62 respectively. These parameters permit preparation of homopolymers of chosen molecular weight.
<title>Helmet display options: a route map</title> (1990)

Helmet mounted displays are exercising the ingenuity of optical and mechanical designers more than any other type of display in attempting to meet essential criteria with currently available technology. The inevitable result is that a wide range of design options and attendant compromises are available to the crew station designer. This paper offers some guidelines on the implications of selecting key helmet display parameters, and describes a unique solution to the problem.
A Power-Aware Chopper-Stabilized Instrumentation Amplifier for Resistive Wheatstone Bridge Sensors (2014)

This paper presents a power-aware instrumentation amplifier (IA) based on differential difference amplifier (DDA) dedicated to a resistive Wheatstone bridge sensor system. The design incorporates a proposed current source replica (CSR) circuit that facilitates the pair matching layout for all critical pairs in DDA input stage. This is in contrast with the conventional design where the stated layout technique can only be applied to the input transistor pairs. Besides, a new analysis on common-mode signals and differential common-mode signal in chopper-stabilized DDA is given. It has shown that the differential common-mode signal is not modulated in chopping DDA. The relationship between dc offset and differential common-mode rejection ratio (CMRRd) is illustrated. Enhancing CMRRd will lead to reduction of dc offset and offset drift in DDA. Fabricated by a 0.18-μm CMOS process, the experimental results have shown that the maximum input-referred offset for the injection-nulling switch chopper DDA with CSR circuit is 3 μV, while the input-referred dc offset is 1.78 μV (mean + standard deviation) at a chopping frequency of 10 kHz from eight fabricated samples. For a closed-loop gain of 40.17 dB, its output ripple is reduced by three times with respect to itself without CSR. The IA powered with a high-power supply rejection regulator has been tested with a resistive Wheatstone bridge. The transducer achieves an input-referred noise of 3.76 μVrms for 2-kHz bandwidth.
Editorial Vol.69 (2016)

Wani Vol.69 2014 pp.9-10
Antiulcerogenic Effects of<i>Ocimum basilicum</i>Extracts, Volatile Oils and Flavonoid Glycosides in Albino Rats (1992)

Antiulcerogenic effects of extracts, volatile oils and flavonoid glycosides of Ocimum basilicum leaves were studied in normal as well as aspirin-, acetic acid- and stress-induced ulcerated rats. Also, their effects on outputs of gastric acid, pepsin and hexosamines were recorded in normal and ulcerated rats. The aqueous, methanol and water-methanol extracts and flavonoid glycosides of O. basilicum decreased the ulcer index, inhibited gastric acid and pepsin secretions and enhanced hexosamines in aspirin-treated rats. The aqueous extract increased glucosamine but did not affect the output of acid and pepsin. The methanol extract lowered acid and pepsin output but did not increase the glucosamine level. However, the water-methanol extract decreased acid output, increased glucosamine, and did not affect pepsin. The flavanoid glycosides of O. basilicum decreased the ulcer index and the outputs of acid and pepsin, but increased glucosamines. Volatile oils of the plant were ineffective against stress-induced ulcers. However, high antiulcer activity was demonstrated by the aqueous extract in acetic acid-induced ulcerated rats. It therefore appears that anti ulcerogenic activity of O. basilicum is extractable into both water and methanol and its active principle(s) may include flavonoid glycosides. These substances may act by augmenting the gastric barrier.
cAMP activates BK<sub>Ca</sub>channels in pulmonary arterial smooth muscle via cGMP-dependent protein kinase (2003)

Normally, signaling mechanisms that activate large-conductance, calcium- and voltage-activated potassium (BK(Ca)) channels in pulmonary vascular smooth muscle cause pulmonary vasodilatation. BK(Ca)-channel modulation is important in the regulation of pulmonary arterial pressure, and inhibition (decrease in the opening probability) of the BK(Ca) channel has been implicated in the development of pulmonary vasoconstriction. Protein kinase C (PKC) causes pulmonary vasoconstriction, but little is known about the effect of PKC on BK(Ca)-channel activity in pulmonary vascular smooth muscle. Accordingly, studies were done to determine the effect of PKC on BK(Ca)-channel activity using patch-clamp studies in pulmonary arterial smooth muscle cells (PASMCs) of the Sprague-Dawley rat. The PKC activators phorbol myristate acetate (PMA) and thymeleatoxin opened BK(Ca) channels in single Sprague-Dawley rat PASMC. The activator response to both PMA and thymeleatoxin on BK(Ca)-channel activity was blocked by Gö-6983, which selectively blocks PKC-alpha, -delta, -gamma, and -zeta, and by rottlerin, which selectively inhibits PKC-delta. In addition, the specific cyclic GMP-dependent protein kinase antagonist KT-5823 blocked the responses to PMA and thymelatoxin, whereas the specific cyclic AMP-dependent protein kinase blocker KT-5720 had no effect. In isolated pulmonary arterial vessels, both PMA and forskolin caused vasodilatation, which was inhibited by KT-5823, Gö-6983, or the BK(Ca)-channel blocker tetraethylammonium. The results of this study indicate that activation of specific PKC isozymes increases BK(Ca)-channel activity in Sprague-Dawley rat PASMC via cyclic GMP-dependent protein kinase, which suggests a unique signaling mechanism for vasodilatation.
High-Dilution Carbon-Black/Polymer Composites: Hierarchical Percolating Network Derived from Hz to THz ac Conductivity (1997)

We have studied conducting carbon-black (CB) composites with a percolation threshold $({p}_{c})$ of $3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$ in volume fraction. The low ${p}_{c}$ is explained in terms of a fractal distribution of CB aggregates. To prove this model we measured the frequency dependence of the complex conductivity (up to 0.6 THz) for various CB concentrations. Two successive scaling regimes are found, the first dominated by the infinite percolating cluster and the second by finite clusters. We extend the anomalous diffusion model to explain this observation and show the parameters found to be consistent with the proposed structure.
A novel approach for Web-based data input panel design (2005)

In Web-based application development, user interfaces design is a major task especially on the face of changing circumstance. One important and ubiquitous task in Web-based user interface design is the development of data input pages. In this paper, we propose a novel approach to address issues concerning data input page development. In this approach, data input panels can be automatically generated for all the tables in a database. Furthermore, the generated data input panels are self-adaptable to suit user interaction patterns. Based on our initial evaluation, this approach has the potential to make Web based system easier to develop, more flexible to change, and easier to maintain.
A method for measuring acoustic wave attenuation in the laboratory (1988)

The measurement of attenuation is performed by directly determining the attenuation operator (or the impulse response of the medium) in the time domain. In this way, it is possible to separate the attenuation operator from other nonattenuation effects, e.g., reflections. The Wiener filtering technique, or the damped least squares, is used to calculate the attenuation operator. For the damped least squares, we have corrected for the effect due to the addition of the damping constant using a perturbation method. Numerical tests are carried out to illustrate the technique. The geometric beam spreading of ultrasonic waves generated by a source of finite size can strongly affect the result of attenuation measurements. Corrections are made by equating the received signal to the average pressure over the receiver surface. The technique is used to measure ultrasonic attenuation in water, glycerol, and mud. The measurement in water offers a test of the corrections made for the geometric beam spreading. The measurement in glycerol and mud shows that, in the frequency range of 0.2–1.5 MHz, the attenuation of glycerol increases rapidly with frequency, whereas the attenuation of mud is proportional to frequency, exhibiting a constant Q behavior. The measurements show that the technique used here is an effective approach to the measurement of attenuation.