gebhart/patrepeval huggingface dataset:
SMC - Sink Mechanisms and Techniques of Minimizing Sink (1973)

<div class="htmlview paragraph">Two major causes of sink marks above ribs and bosses in compression molded SMC (sheet molding compound) parts are discussed-polymerization shrinkage and thermal shrinkage. Polymerization shrinkage has been minimized through the use of low profile resin systems. Differential thermal shrinkage is the result of fiber orientation and resin-glass variation that may occur as SMC material flows into the ribs and bosses.</div> <div class="htmlview paragraph">A design investigation has shown that ribs with minimum lead-in radii have significantly less sink than ribs with more generous 1/8 in lead-in radii. The effects of various rib geometries on sink have been documented.</div> <div class="htmlview paragraph">A materials study has shown that the use of short fibers and increased glass loading generally reduces the level of sink. More importantly, the use of “composite” molding techniques has permitted no sink molding on a lab basis. The term composite here refers to the simultaneous molding of two different SMC materials. The best results have been obtained with the use of continuous strand mat reinforcement SMC near the flat surface in combination with 1/2 in fiber reinforced SMC in the rib area.</div>
Elastomers, Synthetic, Survey (2000)

Abstract The purpose of this article is to provide a brief overview of the materials designated synthetic elastomers and the elastomeric or rubbery state. Subsequent entries describe the individual classes of elastomers in detail. The principal classes of synthetic elastomers covered here or elsewhere in the Encyclopedia are acrylic elastomers, butyl rubber, chlorosulfonated polyethylene, ethylene‐propylene–diene rubber, fluorocarbon elastomers, nitrile rubber, polybutadiene, polychloroprene, polyethers, polyisoprene, styrene‐butadiene rubber, thermoplastic elastomers, silicones, polysulfide rubber, and polyurethanes.
Real with Fiction (2007)

There are no images without a “dangerous” scene setting. The imagetic process by nature involves particular kinds of knowledge, just as any kind of writing involves elaborations, choices and uses of appropriate and pertinent forms. My intention is to show that a fictional mode of production deliberately chosen and clearly expressed allows us to make evident specific levels of social realities that expand the classical field of anthropology. It is possible to mix Vertov's pursuit of a confrontation of images and his development of montage editing, an encompassing descriptive intention that emerges from the particular conditions of a given situation, with a specific exchange amounting to a shared interrogation. This idea ia developed over the course of this paper as a dialogic or transactional anthropology.
Deep and lifelong learning: When theory and SoTL intersect (2013)

Abstract: In this reflective essay, a teacher educator describes her own transformation that occurred as a result of studying adult learning theory along with a group of doctoral students. In examining her habits of course design, she realized that her practices had departed from her ideals and that her course planning was guided as much by pragmatic schedule demands as by the conceptual development of her students. As a result, she redesigned her course in language and literacy for preservice teachers. After describing the existing course, the author relates how her thinking—and the course—were transformed by the intersection of three influences: her encounter with Ramsden’s (2003) androgogical theory of teaching and learning, her familiarity with a discipline-specific pedagogical theory, and her SoTL research on students ’ needs as learners. Guided by these influences, she reconceptualized the language and literacy course with a renewed focus on the social constructivist goals of facilitating conceptual change through meaning-oriented approaches. The author attempts to make visible to the reader exactly how she made this transition to address both the theoretical and the practical dimensions of the course, rediscovering in the process the transformation that is possible when teacher education focuses as on the why as well as the how of teaching.
Comparative study of the design and development of direct drive brushed and brushless DC motors with samarium cobalt, neodymium-iron-boron and ceramic magnets (1993)

Permanent magnet direct drive brushed and brushless DC motors are described. The impact of the characteristics of the magnet materials on the design and performance is discussed. The design and performance characteristics of these motors with 50 mm and 150 mm outside diameters are presented and compared. Some aspects of manufacture and application are given. The conclusion is drawn that, irrespective of applications, at the present time motors with samarium cobalt magnets are preferred without any hesitation. >
Data Acquisition and Process Control With the M68Hc11 Microcontroller (1993)

From the Publisher:
This all-in-one reference offers comprehensive, in-depth coverage of the M68HC11 to readers who will be designing real systems using this popular microcontroller. Focusing on the M68HC11 as a laboratory measurement and process control platform, it provides all the design and development tools needed to create a microcontroller-based product that can solve common application problems; no outside data or references are needed. Organized into four sections: Part I covers the M68HC11 microcontroller and the Evaluation Board (EVB) system; Part II features new chapters on Program Design and Designing and Writing Program Modules; Part III includes four re-written chapters on software considerations and hardware design procedures to acquire input data and provide output interface and control with the microcontroller; Part IV provides five applications chapters solving five typical engineering problems. Appropriate for anyone interested in microcontrollers or microprocessors.
A possible model for sustained oscillations (pulsations) in (Al,Ga)As double-heterostructure lasers (1979)

A model explaining the origins of sustained oscillations in (Al,Ga)As double-heterostructure lasers is proposed and plausibility arguments of its applicability are given. The model relies on saturable-absorber <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Q</tex> -switching to produce the pulsations, with the saturable absorption located near the ends of the laser in regions where surface recombination reduces the injected-carrier density. The sides of the active volume, or defects which cause carrier recombination within the active volume, may also cause such pulsations according to this model.
Opening and Closing the Market: Evidence from the London Stock Exchange (2005)

Abstract We investigate the performance of call markets at the open and close using a unique natural experiment provided by the London Stock Exchange where traders can choose between a call and an off-exchange dealership system. Although the call market dominates dealers in terms of price discovery, it suffers from a high failure rate to open and close trading especially when trading conditions are difficult. The call's trading costs increase with asymmetric information, slow trading, order flow imbalances, and uncertainty. Traders' resort to use of call auctions is negatively correlated with firm size, implying that the call may not be the optimal method for opening and closing trading of medium and small sized stocks.
Pulse Duration and Repetition Rate of a Transistor Multivibrator (1952)

Expressions are obtained for the pulse duration and repetition rate of an astable multivibrator circuit employing contacttype transistors. These expressions are confirmed by experiment for repetition rates of from 200 to 10,000 cycles per second.
Production and Mechanical Properties of Powders Coated by Electrolysis and Other Processes (1989)

Description des essais effectues pour revetir les surfaces des particules d'une poudre de fer avec differents metaux (base cuivre, plomb, nickel). Presentation des caracteristiques mecaniques des compacts produits avec les poudres composites
Linda CLARK, The rise of professionnal women in France. Gender and public administration since 1830, Cambridge, Cambridge University Press, 2000, 324 p. (2002)

Linda Clark produit avec ce livre un essai remarquable, par l'ampleur de sa recherche et des résultats qu'elle en tire. Fermement inscrite dans la tradition désormais solidement établie de l'histoire des femmes, cette étude a pour objet de reconstruire l'histoire de l'accès des femmes à l'administration publique française depuis 1830 et de leur difficile intégration dans cette vaste machine jusqu à l'aube des grands chamboulements de l'après seconde guerre mondiale. Établie sur des sour...
Reactivated movement of decondensed rat sperm models and a description of their ultrastructure (1994)

This study aimed at finding optimal conditions to decondense rat sperm nuclear chromatin with minimal damage. This was judged by the ability of the sperm-tail axoneme in the partially decondensed sperm models to be reactivated. Decondensation was assessed by phase contrast microscopy. Partial decondensation was judged to occur when the bright refractive appearance of the sperm nucleus turned black, and full decondensation when the nucleus turned pale and increased in volume. Demembranation was shown to have occurred by electron microscopy. With 0.03% Triton X-100 rat caudal epididymal sperm were partially demembranated to produce sperm models. Demembranation using a 0.1% solution of Triton X-100 was complete, but as with the solution of 0.05% Triton X-100, resulted in poorer reactivation of the partially decondensed sperm models. Reactivated movement of decondensed sperm models was used to assess the effect of the decondensing agents DTT and heparin. We were only able to achieve reactivation of sperm models that had undergone partial decondensation. Optimal reactivation was obtained after rat sperm models had decondensed in the decondensation solution containing 5 mM DTT, 6 mM EDTA, and 27.3 or 34.1 USP/ml heparin. Concentrations of heparin above or below these values resulted in a decrease in the number of sperm models reactivated. Ultrastructurally, sperm partially decondensed with 5 mM DTT, 6 mM EDTA, and 34.1 USP/ml heparin had their plasma membrane further extracted compared with sperm treated with 0.03% Triton X-100 alone. Decondensation was greatest in the peripheral regions of the nucleus with extraction of the acrosome but not of the perforatorium. The decondensed regions had a filamentous appearance. This procedure will allow access to sperm nuclear chromatin for experimental manipulation in rat sperm models.
The yeast med1 mutant undergoes both meiotic homolog nondisjunction and precocious separation of sister chromatids. (1994)

A mutant at the yeast MED1 locus was isolated in a screen for sporulation-proficient, meiotic-lethal mutants. Synaptonemal complex formation in the med1 mutant is apparently normal and med1 strains undergo meiotic crossing over at approximately 50% of the wild-type level. The med1 mutant undergoes homolog nondisjunction at meiosis I, presumably as a consequence of the decrease in crossing over. In addition, the mutant undergoes precocious separation of sister chromatids, resulting in chromosome missegregation at both meiotic divisions. We suggest that the med1 mutation perturbs chromosome structure, leading to a reduction in recombination and a defect in sister chromatid cohesion.
The contribution of various foods to intake of vitamin A and carotenoids in The Netherlands. (1998)

This study presents data on dietary intake of specific carotenoids in the Netherlands, based on a recently developed food composition database for carotenoids. Regularly eaten vegetables, the main dietary source of carotenoids, were sampled comprehensively and analysed with modern analytic methods. The database was complemented with data from recent literature and information from food manufacturers. In addition, data on intake of vitamin A are presented, which are based on the most recent update of the Dutch Food Composition Table. Intake of vitamin A was calculated for adult participants of the second Dutch National Food Consumption Survey in 1992, whereas intake of carotenoids was calculated for participants of the Dutch Cohort Study on diet and cancer, aged 55 to 69 in 1986. Mean intake of vitamin A amounted to 1.1 and 0.9 mg RE/day for men and women, respectively; the contributions of meat, fats and oils, vegetables and dairy products to total intake were 35%, 24%, 16%, and 16%, respectively. Mean intake of alpha-carotene, beta-carotene and lutein plus zeaxanthin was 0.7, 3.0, and 2.5 mg/day respectively for both men and women, while mean intake of lycopene was 1.0 mg/day for men and 1.3 mg/day for women. The most important foods contributing to intake of beta-carotene and lutein plus zeaxanthin were carrots (beta-carotene only), spinach, endive and kale.
Semantic-based estimation of term informativeness (2009)

The idea that some words carry more semantic content than others, has led to the notion of term specificity, or informativeness. Computational estimation of this quantity is important for various applications such as information retrieval. We propose a new method of computing term specificity, based on modeling the rate of learning of word meaning in Latent Semantic Analysis (LSA). We analyze the performance of this method both qualitatively and quantitatively and demonstrate that it shows excellent performance compared to existing methods on a broad range of tests. We also demonstrate how it can be used to improve existing applications in information retrieval and summarization.
Handbook on metals in clinical and analytical chemistry (1994)

General aspects of the role of metals in clinical chemistry collection, transport, and storage of biological samples for the determination of trace metals method evaluation, quality control and external quality assurance systems of analytical procedures spectrophotometry atomic absorption spectrometry ion-selective electrodes - an overview pH measurements and other applications voltammetry ion chromatography analysis by gas chromatography-mass spectrometry inductively coupled plasma-atomic emission spectrometry (ICP-AES) and inductively coupled plasma-mass spectrometry (ICP-MS) neutron activation analysis and y-spectrometry solid sampling analysis determination of metals in human hair aluminum antimony arsenic barium beryllium bismuth cadmium calcium cesium chromium cobalt copper europium and other lanthanides gadolinium gallium germanium gold indium iron lead lithium magnesium manganese mercury (part contents)
Dose-Response Study of Intrathecal Morphine Versus Intrathecal Neostigmine, Their Combination, or Placebo for Postoperative Analgesia in Patients Undergoing Anterior and Posterior Vaginoplasty (1996)

This study was designed to examine postoperative analgesia with intrathecal neostigmine in a randomized, blinded trial with morphine as the active control in patients undergoing anterior and posterior vaginoplasty.A secondary aim was to provide preliminary data on the interaction between these two drugs. The incidence of adverse effects was also assessed. Forty-eight patients were divided into eight groups (50 micro gram, 100 micro gram, and 200 micro gram morphine [M]; saline; 50 micro gram, 100 micro gram, and 200 micro gram neostigmine [N]; and 50 micro gram morphine + 50 micro gram neostigmine). Anesthesia was provided with a balanced technique. All patients stayed 24 h in the recovery room where adequacy of postoperative analgesia and side effects were assessed. Increasing doses of intrathecal morphine (50 micro gram, 100 micro gram, and 200 micro gram) and intrathecal neostigmine (50 micro gram, 100 micro gram, and 200 micro gram) showed a dose-dependent pattern of analgesia (P < 0.001). The M50 + N50 combination resulted in a better analgesic effect with fewer side effects than M50, N50, and control groups. These preliminary data suggest that spinal neostigmine produces analgesia for vaginoplasty surgery similar in duration to spinal morphine and that the combination of morphine and neostigmine may allow a reduction in the dose of each component for postoperative analgesia. (Anesth Analg 1996;82:1182-7)
Effects of the venom of the rhinoceros horned viper <i>(Bitis nasicornis)</i> on blood coagulation, platelet aggregation, and fibrinolysis (1970)

The venom of the rhinoceros horned viper (Bitis nasicornis) has been studied in vitro and has been shown to be anticoagulant. This action appeared to be due to an effect on both the extrinsic and intrinsic blood thromboplastin mechanisms. The venom was also proteolytic and in purified caseinolytic systems activated plasminogen, enhanced the activation of plasminogen by streptokinase, and potentiated the action of plasmin. In the euglobulin clot lysis system high concentrations of venom produced inhibition. The crude venom increased platelet adhesiveness but in high concentrations delayed the snowstorm effect in the Chandler's tube system and inhibited platelet adenosine diphosphate reactivity. Passage through carboxymethylcellulose yielded six fractions. One possessed anticoagulant activity, inhibited plasmin, and increased the optical density of platelet-rich plasma. The other five fractions shortened the plasma recalcification time but had no effect on plasmin activity. Four fractions aggregated platelets and enhanced platelet adenosine diphosphate reactivity.
Techniques for improving Vibroseis data (1987)

Abstract An ongoing program of field experiments to analyze vibrator-earth response has verified two major problems in Vibroseis data acquisition: amplitude and phase control of vibrator output, and suppression of vibrator-generated harmonic distortion. This study confirms that these problems are more severe on rigid ground (i.e., frozen tundra) than on soil. The test results demonstrate that a large-amplitude vibrator resonance at 40 Hz and a higher frequency (equal to or greater than 100 Hz) earth-baseplate resonance dominate the vibrator-frozen ground response. Adaptive, closed-loop amplitude control of ground force virtually eliminates baseplate-ground decoupling at the resonant frequencies while maximizing force output throughout a sweep. Analysis of far-field downhole signals indicates that phase locking to ground force, along with amplitude control, provides a more stable downgoing wavelet than phase locking to baseplate or reaction mass acceleration. Quantitative spectral analysis of downhole and vibrator accelerometer signals shows severe harmonic distortion and demonstrates the suppression of all even harmonics and certain deleterious odd harmonics after rotating the phase of successive sweeps by a phase increment of less than 180 degrees.
Finite-state residual vector quantization using a tree-structured competitive neural network (1997)

Finite-state vector quantization (FSVQ) is known to give better performance than the memoryless vector quantization (VQ). This paper presents a new FSVQ scheme, called finite-state residual vector quantization (FSRVQ), in which each state uses a residual vector quantizer (RVQ) to encode the input vector. This scheme differs from the conventional FSVQ in that the state-RVQ codebooks encode the residual vectors instead of the original vectors. A neural network predictor estimates the current block based on the four previously encoded blocks. The predicted vector is then used to identify the current state as well as to generate a residual vector (the difference between the current vector and the predicted vector). This residual vector is encoded using the current state-RVQ codebooks. A major task in designing our proposed FSRVQ is the joint optimization of the next-state codebook and the state-RVQ codebooks. This is achieved by introducing a novel tree-structured competitive neural network in which the first layer implements the next-state function, and each branch of the tree implements the corresponding state-RVQ. A joint training algorithm is also developed that mutually optimizes the next-state and the state-RVQ codebooks for the proposed FSBVQ. Joint optimization of the next-state function and the state-RVQ codebooks eliminates a large number of redundant states in the conventional FSVQ design; consequently, the memory requirements are substantially reduced in the proposed FSRVQ scheme. The proposed FSRVQ can be designed for high bit rates due to its very low memory requirements and the low search complexity of the state-RVQ's. Simulation results show that the proposed FSRVQ scheme outperforms conventional FSVQ schemes both in terms of memory requirements and the visual quality of the reconstructed image. The proposed FSRVQ scheme also outperforms JPEG (the current standard for still image compression) at low bit rates.
MAGNETIC TAPE RECORDING HANDBOOK, (1967)

The purpose of this handbook is to give those people concerned with operation and maintenance of tape recorders a better understanding of the theories and techniques of magnetic recording. In addition, some practical considerations are offered relating to the application and limitations of the direct and FM recording processes. These considerations should be of value to the system designer in adapting magnetic recording to his system requirements. (Author)
Evidence for a role of exogenous or endogenous hyperlactatemia in insulin secretion in the dog. (1979)

Various types of experimental hyperlactatemia were induced in the normal anesthetized dog, and the changes in insulin secretion were measured in the pancreatico-duodenal vein. Hyperlactatemia was induced in the absence or in the presence of an infusion of sodium dichloroacetate (DCA), which activates pyruvate dehydrogenase. 1. Exogenous hyperlactatemia: The infusion of sodium L(+)lactate resulted in a strong increase in blood lactate level which was accompanied by a significant increase in the insulin output from the pancreatico-duodenal vein. The administration of DCA did not counteract the increase in lactate level and did not modify insulin output either. 2. Endogenous hyperlactatemia: This was induced either by pharmacological means: the subcutaneous injection of an antidiabetic biguanide, phenformin (20 mg/kg), or by physiological means: intense muscular work. In both cases an increase in the lactate level and in insulin output was recorded. The administration of DCA suppressed the hyperlactatemia and counteracted the increase in insulin output. These results show that there is a relationship between lactate level and insulin secretion, and give evidence for a role of endogenous lactate in the regulation of insulin secretion.
Dynamic robot manipulation using visual tracking (2003)

The authors consider the multiple applications of vision in the solution of dynamic robot and positioning problems such as catching, hitting, and intercepting a moving object. They propose a framework for qualitative reasoning about such problems, and then present a robust vision-based control strategy that uses a Kalman filter to track image features. In the formulation, a given positioning problem is transformed into one of constrained trajectory planning on a topological surface defined by the relationship between positions of the robot and observable image features. By considering only the qualitative properties of this surface, the need for precise calibration of the various components of the system is eliminated.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>