gebhart/patrepeval huggingface dataset:
Treponema Pallidum Complement-Fixation (TPCF) Test for Syphilis (1956)

Journal Article Treponema Pallidum Complement-Fixation (TPCF) Test for Syphilis Get access Joseph Portnoy, Ph.D., Joseph Portnoy, Ph.D. United Stales Public Health Service, Venereal Disease Experimental Laboratory, University of North Carolina, School of Public Health, Chapel Hill, North Carolina, and Division of Special Health Services, Washington SB, D. C. Dr. Portnoy is Bacteriologist, Venereal Disease Experimental Laboratory, and Dr. Magnuson is Medical Director and Acting Chief, Venereal Disease Program, Division of Special Health Services. Search for other works by this author on: Oxford Academic Google Scholar Harold J. Magnuson, M.D. Harold J. Magnuson, M.D. United Stales Public Health Service, Venereal Disease Experimental Laboratory, University of North Carolina, School of Public Health, Chapel Hill, North Carolina, and Division of Special Health Services, Washington SB, D. C. Dr. Portnoy is Bacteriologist, Venereal Disease Experimental Laboratory, and Dr. Magnuson is Medical Director and Acting Chief, Venereal Disease Program, Division of Special Health Services. Search for other works by this author on: Oxford Academic Google Scholar American Journal of Clinical Pathology, Volume 26, Issue 3_ts, March 1956, Pages 313–322, https://doi.org/10.1093/ajcp/26.3_ts.313 Published: 01 March 1956 Article history Received: 24 September 1955 Accepted: 08 November 1955 Published: 01 March 1956
A low leakage 9t sram cell for ultra-low power operation (2008)

This paper presents the design and evaluation of a new SRAM cell made of nine transistors (9T). The proposed 9T cell utilizes a scheme with separate read and write wordlines; it is shown that the 9T cell achieves improvements in power dissipation, performance and stability compared with previous designs (that require 10T and 8T) for low-power operation. The 9T scheme is amenable to small feature sizes as encountered in the deep sub-micron/nano ranges of CMOS technology.
[Radiosterilization of impressions]. (1989)

Dimensional stability and mechanical properties of addition-silicone impression materials were tested after sterilisation with gamma rays. There were no clinically relevant changes to not sterilized materials.
The virtual panel architecture: A 3D gesture framework (2002)

The Virtual Panel Architecture (VPA) has been designed to help implement an intermediate abstraction with elements of both a physical control panel and a computer-based control panel. This abstraction, handling 3D point-based gesticulative interaction with modeled object hierarchies, is suitable for both virtual reality environments and traditional environments. Based on the VPA, an environment of virtual panels is demonstrated which can be incorporated into keyboard-and-mouse-based computing. Users are able to turn virtual knobs, adjust virtual sliders, and point at virtual screens on these virtual panels in this environment.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Environmental Exploration Based On A Three-dimensional Imaging Radar Sensor (2005)

Well-known sensors applied for remote sensing tasks in the field of autonomous mobile robots are active range discriminating optical and acoustical devices (e.g. laser range cameras, ultrasonic sensors) and passive sensors like CCD-cameras. Regarding the frequency domain they use, we see that, excluding the acoustic devices, they cover the range from about 400 nm to 1500 nm (visual and infrared region). In this paper we present an alternative multitask radar imaging sensor with high spatial resolution operating at a wavelength of 3 mm, corresponding to a frequency of 94 GHz, especially designed for sensing 3-D geometrical properties of an autonomous vehicle environment in indoor situations. The main features of this imaging radar sensor approach are a broad field of vision, direct access to range and velocity information via Doppler signal processing. This is achieved by implementing a coherent pulse doppler radar principle. A short introduction of the system design and technical parameters is given first. Then we concentrate on the sensors various operating modes (e.g. scanning, tracking, 3-D imaging, map generation) proved by presentation of several radar images and different kind of maps we obtained in laboratory surroundings as well as fabrication plants. On the basis of the radar maps an impression of typical millimeter-wave scattering phenomena is given. Finally we discuss the quality of the preprocessed radar data and the contribution of this microwave imaging device within a multisensor environment which is built up in the joint research project SFB 331 at our university.
Design of DPCM Quantizers for Video Signals Using Subjective Tests (1981)

The application of differential pulse code modulation (DPCM) for broadcast color television signals requires a design which produces no visible impairments under normal viewing conditions. This paper describes a quantizer design which is based on measured visibility thresholds of the various kinds of DPCM impairments such as granular noise, edge busyness, and slope overload. The visibility thresholds are determined by subjective tests based on comparisons of DPCM and PCM encoded pictures. Constructions of quantizers are carried out such that the number of levels is minimized without exceeding the measured visibility thresholds. Besides nonadaptive quantizers, adaptive quantizers are also constructed which are controlled by the signal changes of surrounding picture elements. These investigations show that for component coding of color video signals with two-dimensional prediction, a transmission rate of 31.7 Mbits/s is possible for natural types of test pictures without visible impairments using constant word length coding.
The mechanics of medieval state formation: Observations from Wales (1999)

Abstract This paper aims to explore the mechanics of the medieval state‐making process, and specifically the ways in which the inhabitants of medieval society came to terms with the territorialisation of power. It seeks to use Bourdieu's notion of habitus to conceive of a process of state formation that was essentially gradual in nature, one which was characterised by distinct themes of institutional continuity between the pre‐state and state political landscape. In essence, the state‐making process portrayed in the paper is one which is dialectical in nature, as state institutions are developed through a process of mutual mediation between societal leaders and their subjects.
Studies on the cytoprotective and antisecretory activity of ebrotidine. A review. (1997)

Gastric mucosa is exposed to various aggressive factors such as stress, ulcerogenic drugs including acetyl-salicylic acid(ASA)-like agents, ethanol, bacteria, particularly Helicobacter pylori (Hp), and various endogenous irritants such as acid-pepsin secretion and bile salts. The maintenance of the mucosal barrier depends upon the activation of the pre-epithelial (mucus-alkali secretion), epithelial (surface-active phospholipids and rapid mucosal restitution) and post-epithelial (mucosal microcirculation, sensory nerves and mast cells) components of mucosal defense. Ebrotidine (N-[(E)-[[2-[[[2-[(diaminomethylene)amino]- 4-thiazolyl]methyl]thio]ethyl]amino]methylene]-4-bromo-benzenesulfonamid e, CAS 100981-43-9, FI-3542) is the first of a new generation of H2-receptor antagonists with both antisecretory and cytoprotective activities. Its inhibitory action is similar to that of ranitidine and approximately tenfold greater than cimetidine, and is accompanied by a small and transient increase in plasma gastrin levels. In contrast to ranitidine and other H2-receptor antagonists, ebrotidine exerts a unique cytoprotection against injury by various ulcerogens such as ethanol, ammonia, lipopolysaccharides (LPS), stress and ASA or acidified taurocholate. The mechanism of this protection by ebrotidine is not clear, but it has been shown to stimulate mucus secretion, to increase the quality of adherent mucus gel and to increase gastric mucosal blood flow (GBF), possibly due to enhanced mucosal formation of prostaglandin E2 (PGE2) and nitric oxide (NO). The cytoprotective effects of ebrotidine were observed in rats and confirmed also in humans with gastric lesions induced by ethanol or ASA. Ebrotidine also exerts anti-Helicobacter pylori (Hp) effects by interfering with surface receptors of epithelial cells and inhibiting urease, protease and lipase activity, and by counteracting the noxious effects of Hp-related substances such as ammonia and lipopoly-saccharides (LPS).
The very large array: Design and performance of a modern synthesis radio telescope (1983)

Since its development in the 1960's, the technique of obtaining high-resolution radio images of astronomical objects using Fourier synthesis has advanced sufficiently so that today such images often provide better angular resolution than is obtainable with the largest optical telescopes. A synthesis array measures the Fourier transform of the observed brightness distribution by cross-correlating the signals from antennas separated by distances up to tens of kilometers. The antennas must be equipped with low-noise receiving systems and connected together by phase-stable transmission links. Wide-bandwidth digital correlators are used to perform the cross correlation. The data-reduction algorithms and computing system play a critical role in determining the quality of the images produced by the array. The Very Large Array (VLA) synthesis telescope, recently constructed in New Mexico, consists of twenty-seven 25-m-diameter antennas arranged in a Y-shaped array. Each arm of the Y is approximately 21 km long and the antetmas can be moved to various positions on the arms by a rail-mounted transporter. The antennas are equipped with cryogenically cooled receiving systems and are interconnected by low-loss, TE <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">01</inf> -mode, large-diameter waveguide. The cross-correlation products for each of the 351 pair combinations of antennas are measured for 4 IF signals by a 50-MHz bandwidth digital correlator. In this paper we discuss the design of synthesis arrays in general, and describe the design and performance of the VLA in particular, under the seven headings: array geometry design, sensitivity considerations, phase stability requirements, signal transmission system, delay and correlator system, control system, and data-reduction requirments. In each section, we review the underlying instrumental requirements and provide details of how the VLA was designed to meet them. Recently developed data-reduction algorithms provide effective ways of correcting synthesis images for the effects of missing Fourier components and instrumental and atmospheric amplitude and phase errors. The power of these algorithms is demonstrated using actual VLA images.
A methodology for hardware verification based on logic simulation (1991)

A logic simulator can prove the correctness of a digital circuit if it can be shown that only circuits fulfilling the system specification will produce a particular response to a sequence of simulation commands.This style of verification has advantages over the other proof methods in being readily automated and requiring less attention on the part of the user to the low-level details of the design. It has advantages over other approaches to simulation in providing more reliable results, often at a comparable cost. This paper presents the theoretical foundations of several related approaches to circuit verification based on logic simulation. These approaches exploit the three-valued modeling capability found in most logic simulators, where the third-value X indicates a signal with unknown digital value. Although the circuit verification problem is NP-hard as measured in the size of the circuit description, several techniques can reduce the simulation complexity to a manageable level for many practical circuits.
Reduced-complexity digital sinusoid generators and oversampled data converters (1995)

This thesis separately addresses two important issues in signal processing: digital sinusoid generators and oversampled data converters. The first part of the thesis addresses noise additive, or dithering, techniques that exponentially reduce the complexity of digital sinusoid generators for a given level of spur performance. With the appropriate dither signals the quantization noise can be rendered nearly white and free of large spurs, or periodic error components, without recourse to large look-up tables. New analysis shows that when the phase dither signal is the sum of M uniform white variates, the phase spurs are at a level of -6(M + 1) dBc per look-up phase bit instead of the usual -6 dBc per phase bit in a non-dithered system. This exponentially reduces the complexity of the digital sinusoid generator for a given spur requirement at the expense of linearly increasing the nearly-white quantization noise. The second part of the thesis presents two metric-based approaches to the design of over-sampled data converters (ODCs). The first approach leads to an architecture which is derived based on the minimization of a causal, constrained-memory, power-spectral-distortion metric. This architecture is compared to standard ΔΣ modulators and shown to have superior noise performance under some conditions. Another metric-based approach to the design of ODCs uses a more general distortion metric and incorporates elements of vector quantization, eigensystems and analysis of the discrete prolate spheroidal wave functions. This enables the application of vector quantization theory to oversampled data converters. A vector-quantizer-based ODC architecture called the eigenmodulator is motivated and analyzed. Rate-distortion results are presented for the important case of a band-limited Gaussian input. When both the complexity of the eigenmodulator and the oversampling ratio become large, it is shown that the distribution of the output vectors in an important transform space becomes joint Gaussian. This is shown to be important in light of the centroid condition for an optimal vector quantizer. The implication of this result on the choice of output scaling for the single-bit data converter is addressed.
New converter circuitry for PV applications using multilevel converters (2009)

This paper presents an analysis and the design of an off grid PV system for providing electricity for remote area. The system composed of dc-dc multilevel boost converter (MLBC) which is used for extracting maximum power from the cell. It has been chosen to generate three dc voltages at its output terminal. In addition to, a multilevel dc link inverter suitable for the generated dc bus voltages. The inverter generates 7 levels at its output terminal. A maximum power point tracking (MPPT) program is designed and simulated to extract the maximum power from the PV cell. Regulation of the ac output voltage is executed by employing constant voltage and frequency control on its output voltage. To validate the studied system, analysis, simulation, and experimental results have been provided. Where inverter switch control signals are derived using multicarrier PWM switching technique. The effect of the modulation indexes on the load voltage and on the THD has been studied.
A simple one phase preparation of organically capped gold nanocrystals (2000)

A simple reproducible one-phase preparation of highly monodispersed organically passivated gold nanoparticles is described. The effect of the capping ligand on the particle size is discussed along with the manipulation of the nanoparticles into colloidal crystals and 2D arrays.
Aspiration of foreign materials in children while under general anesthesia for dental extractions. (1993)

Airway aspiration of foreign materials in children and adults is probably more common than has been supposed. This study investigated the possibility of such aspiration in children while under general anesthesia for dental extractions. A radiopaque fluid was used to coat the oral tissues and showed that a significant number of children did aspirate material into the trachea, bronchi, and occasionally even lung tissue. The notion that safety may be improved by operating with the patient in the supine position was not confirmed. While careful placement of an oropharyngeal pack may prevent solid material from entering the trachea and bronchi, it should be realized that fluids such as blood, saliva, and pus could still contaminate the airway.
Nematic Liquid Crystals (2001)

The (simplified) Ericksen-Leslie equations are modified Navier-Stokes equations that take account of the liquid crystallinity.
Acoustical Thermometer (1965)

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Improved Extraction of Abscisic Acid From Plant Tissue (1988)

Methods have been developed for the extraction of abscisic acid (ABA) from plant tissues using water as the extracting solvent. Abnormally high levels of ABA were extracted with water at room temperature from some tissues. This was attributed to enzymic hydrolysis of conjugated forms of ABA. This problem was overcome by briefly boiling the plant tissue in water before homogenisation. Subsequent analysis of ABA was by combined gas chromatography/mass spectrometry using deuterium-labelled ABA as an internal standard but it is suggested that the method may be particularly suited to assay procedures based on immunological techniques where solvent residues may be undesirable.
Noninvasive CT Determination of Arterial Blood Concentration of Meglumine Iothalamate (1993)

A quantity that often must be determined in physiological imaging studies is the blood concentration of the tracer over time. This is usually performed by direct arterial or venous blood sampling. We studied the relationship between the concentration of meglumine iothalamate in arterial blood and values determined from voxels containing large blood vessels in a series of CT images at the same location over time. After correction for volume averaging based on a single venous blood sample, there was an excellent correlation between the two blood curves. Differences between the curves were shown to be inconsequential by a simulation of transcapillary transport determinations. We thus conclude that determination of plasma concentration from CT images is a reliable technique for CT transcapillary transport studies.
Exact and Computationally Efficient Likelihood-Based Estimation for Discretely Observed Diffusion Processes (with Discussion) (2006)

Summary The objective of the paper is to present a novel methodology for likelihood-based inference for discretely observed diffusions. We propose Monte Carlo methods, which build on recent advances on the exact simulation of diffusions, for performing maximum likelihood and Bayesian estimation.
Analysis and transformation of source code by parsing and rewriting (2005)

You don't know how much of you is a part of me.My supervisors at CWI are
Implementation Attacks on Post-Quantum Cryptographic Schemes. (2015)

Abstract. Post-quantum cryptographic schemes have been developed in the last decade in response to the rise of quantum computers. For-tunately, several schemes have been developed with quantum resistance. However, there is very little effort in evaluating and comparing these schemes in the embedded settings. Low cost embedded devices represents a highly-constraint environment that challenges all post-quantum cryp-tographic schemes. Moreover, there are even fewer efforts in evaluating the security of these schemes against implementation attacks including side-channel and fault attacks. It is commonly accepted that, any em-bedded cryptographic module that is built without a sound countermea-sure, can be easily broken. Therefore, we investigate the question: Are we ready to implement post-quantum cryptographic schemes on embedded systems? We present an exhaustive survey of research efforts in design-ing embedded modules of post-quantum cryptographic schemes and the efforts in securing these modules against implementation attacks. Un-fortunately, the study shows that: we are not ready yet to implement any post-quantum cryptographic scheme in practical embedded systems. There is still a considerable amount of research that needs to be con-ducted before reaching a satisfactory level of security. 1
ABSORPTION OF STEROIDS FROM SUBCUTANEOUSLY IMPLANTED TABLETS OF THE PURE HORMONE AND OF THE HORMONE MIXED WITH CHOLESTEROL (1950)

THE comparative rate of absorption of steroid hormones and their esters from subcutaneously implanted tablets has been studied by different observers (1–5). Lipschutz and Vargas (6) have calculated absorption per square millimeter of the tablet. Most important work on the laws governing absorption from tablets has been done by Folley and his associates (7–10). Tablets prepared by mixing cholesterol with various substances have been in use for a long time (11–13), and great diminution of the absorption rate has been found (12–14). The degree of this diminution and the laws to which it is subject have apparently not been under discussion so far; but the following statements can be made. Whereas cholesterol is not absorbed from tablets of pure cholesterol (15) it is absorbed from hormone-cholesterol tablets; this is shown by the fact that the concentration of the steroid hormone in the hormone-cholesterol tablet does not diminish as it should if absorption is selective (14, 16). One must then suppose that some change in the physical condition of cholesterol is effected through the contact with the steroid hormone. It can be shown that something similar occurs also with the steroid hormone, but in the opposite direction. When using tablets containing 60 per cent of cholesterol and 40 per cent of progesterone, one would suppose that absorption of progesterone would drop two and one-half times compared to tablets of pure progesterone, should absorption per square millimeter remain unchanged. This is not the case. Absorption of progesterone from tablets containing 40 per cent of this steroid drops much more; absorption is about 25 micrograms or less per square millimeter (13) instead of more than 200 to 300 micrograms from similar tablets of pure progesterone, i.e., absorption drops probably ten times instead of two and one-half times. In other words, absorption of progesterone per square millimeter of this steroid diminishes greatly when the steroid is mixed with cholesterol.
A dynamic model for optical-fiber coating application (1990)

A dynamic model based upon mechanical and acoustical impedances, which was developed to characterize the process of applying polymer coating to lightguide fiber during the draw process, is presented. The dynamic behavior is influenced by pressure, material temperature, and component geometry.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Modeling and Remodeling Writing (2012)

In Section 1 of this article, the author discusses the succession of models of adult writing that he and his colleagues have proposed from 1980 to the present. He notes the most important changes that differentiate earlier and later models and discusses reasons for the changes. In Section 2, he describes his recent efforts to model young children’s expository writing. He proposes three models that constitute an elaboration of Bereiter and Scardamalia’s knowledge-telling model. In Section 3, he describes three running computer programs that simulate the action of the models described in Section 2.