gebhart/patrepeval huggingface dataset:
A Retrospective: Development of Simulation Models for the 1903 and 1905 Wright Flyers (2004)

The centennial of flight has brought about a renewed interest in the first airplanes and their flight characteristics. It is known that the first Wright Flyers were unstable, but history showed that they were flyable. It is the longitudinal handling ch.aracteristics that are of interest in this paper. Wind tunnel tests have been performed on the 1903 Flyer and provide limited aerodynamic data, but a higher fidelity model is needed to fully simulate the aircraft within nonlinear regions. Simulation models of the 1903 and 1905 Flyers were created by using the results of wind tunnel tests, using inviscid flow analysis, and expanding the data to include high angles of attack. The two models were simulated in the PC-based FlightGear Flight Simulator, and the results shew that both aircraft require continuous pilot input, but they are flyable with practice.
Automatic History Matching of Production and Facies Data with Non-stationary Proportions using EnKF (2009)

Abstract Most geostatistical methods for generating plausible facies models require prior knowledge of the facies proportions distribution to account for heterogeneity within the reservoir. This parameter affects the flow behavior, predictive performance and fluid volume distribution of the model. In practice, it is hardly known with certainty and it is important to account for this uncertainty in the modeling and history matching phases. The ensemble Kalman filter (EnKF), when modified appropriately, to account for non-linearity and non-Gaussianity, is quite robust for automatic history matching problems. However, because the problem of history matching applied to facies is complex, most attempts at solving this problem typically assume constant petrophysical properties and stationary facies proportions. However, realistic representation of facies distribution requires incorporating the variation in petrophysical properties in the geologic model, in addition to any associated uncertainty. This is critical to correctly defining the flow connectivity within the model and the variations in storativity within facies. In this paper, we investigate a number of practical issues in history matching applied to facies with heterogeneous petrophysical properties and non-stationary proportions: (1) Can we account for heterogeneity in facies petrophysical properties during history matching and subsequently reduce any associated uncertainty in them by sequential calibration to data? To the best of our knowledge, this is the first time that heterogeneity in facies petrophysical properties has ever been applied to problems of this kind; (2) What is the EnKF performance when the facies proportions are stationary but implicitly uncertain? (3) Can EnKF efficiently adjust the facies boundaries and distributions when the prior proportions are assumed known but non-stationary? To answer these questions we designed three different test problems. We show that when the facies proportion is non-stationary the EnKF is a robust in estimating the facies properties and distribution.
Progenitor cells from the CA3 region of the embryonic day 19 rat hippocampus generate region‐specific neuronal phenotypes in vitro (2004)

Progenitor cells that endure in different regions of the CNS after the initial neurogenesis can be expanded in culture and used as a source of donor tissue for grafting in neurodegenerative diseases. However, the proliferation and differentiation characteristics of residual neural progenitor cells from distinct regions of the CNS are mostly unknown. This study elucidated the characteristics of progenitor cells that endure in the CA3 region of the hippocampus after neurogenesis, by in vitro analyses of cells that are responsive to epidermal growth factor (EGF) or fibroblast growth factor-2 (FGF-2) in the embryonic day 19 (E19) rat hippocampus. Isolated cells from the E19 CA3 region formed neurospheres in the presence of either EGF or FGF-2, but the yield of neurospheres was greater with FGF-2 exposure, Differentiation cultures revealed a greater yield of neurons from FGF-2 neurospheres (60%) than from EGF neurospheres (35%). Exposure to brain-derived neurotrophic factor (BDNF) enhanced the yield of neurons from EGF neurospheres but had no consequence on FGF-2 neurospheres. A large number of neurons from EGF/FGF-2 neurospheres demonstrated clearly palpable morphological features of CA3 pyramidal neurons and lacked gamma-aminobutyric acid (GABA) expression. However, a fraction of neurons (17-20%) from EGF/FGF-2 neurospheres expressed GABA, and exposure to BDNF increased the number of GABAergic neurons (30%) from EGF neurospheres. Neurons from EGF/FGF-2 neurospheres also contained smaller populations of calbindin- and calretinin-positive interneuron-like cells. Thus, progenitor cells responsive to FGF-2 are prevalent in the CA3 region of the E19 rat hippocampus and give rise to a greater number of neurons than progenitor cells responsive to EGF. However, both FGF-2- and EGF-responsive progenitor cells from E19 CA3 region are capable of giving rise to CA3 field-specific phenotypic neurons. These results imply that progenitor cells that persist in the hippocampus after neurogenesis remain regionally restricted and hence retain their ability to give rise to region-specific phenotypic neurons even after isolation and expansion in vitro.
Engineering Micro- and Nanoscale Cavities for Applications in Light Manipulation. (2013)

With highly controllable optical field confinement, subwavelength-scale structures are capable of manipulating light behavior at UV, visible, and IR wavelengths. This light manipulation further enables ones to improve performance of optical devices such as lasers, photovoltaics, and detectors. In this dissertation, two applications of such subwavelength-scale cavities for improved optical performance will be introduced. First, the lasing threshold and optical property of photonic crystal microdisk lasers is improved in the presence of dielectric nanostructures, and the design concept of the nanostructure further paves the way toward higher efficiency microcavity lasers as light sources for photonic integrated circuits. Secondly, several designed plasmonic nanocavities will be presented in this thesis for spectrum filtering. These plasmonic nanostructures enable ones to achieve multifunctional structural color filters with high efficiency (>60%), good color purity (linewidth<70nm), and robust angular response (+-80 degree). The proposed plasmonic nanostructures have great potential for structural color filtering in LCD TV displays to further allow highly efficient displays with sharper colors and ultra-small pixel sizes. The proposed plasmonic nanocavities also open up the opportunity for a wide variety of applications such as photovoltaics, nanocavity emitters, miniature hyperspectral imaging, and high sensitivity index sensors.
Recommendations regarding public screening for measuring blood cholesterol. Summary of a National Heart, Lung, and Blood Institute workshop, October 1988 (1989)

Our website uses cookies to enhance your experience. By continuing to use our site, or clicking "Continue," you are agreeing to our Cookie Policy | Continue JAMA Internal Medicine HomeNew OnlineCurrent IssueFor Authors Podcast Publications JAMA JAMA Network Open JAMA Cardiology JAMA Dermatology JAMA Health Forum JAMA Internal Medicine JAMA Neurology JAMA Oncology JAMA Ophthalmology JAMA Otolaryngology–Head & Neck Surgery JAMA Pediatrics JAMA Psychiatry JAMA Surgery Archives of Neurology & Psychiatry (1919-1959) JN Learning / CMESubscribeJobsInstitutions / LibrariansReprints & Permissions Terms of Use | Privacy Policy | Accessibility Statement 2023 American Medical Association. All Rights Reserved Search All JAMA JAMA Network Open JAMA Cardiology JAMA Dermatology JAMA Forum Archive JAMA Health Forum JAMA Internal Medicine JAMA Neurology JAMA Oncology JAMA Ophthalmology JAMA Otolaryngology–Head & Neck Surgery JAMA Pediatrics JAMA Psychiatry JAMA Surgery Archives of Neurology & Psychiatry Input Search Term Sign In Individual Sign In Sign inCreate an Account Access through your institution Sign In Purchase Options: Buy this article Rent this article Subscribe to the JAMA Internal Medicine journal
SSTM: A State Based IMS Service Triggering Mechanism (2010)

In the current IP Multimedia Subsystem (IMS), the service triggering is mainly executed by the Serving-Call Session Control Function (S-CSCF) according to the information included in the initial Filter Criteria (iFC) which is stored in the Home Subscriber Server (HSS). In this paper, after analyzing the defects of the current mechanism, we propose a new service triggering mechanism: State based Service Triggering Mechanism (SSTM). It aims at triggering services more dynamically in real time, and decreasing the load of the S-CSCF. In this mechanism, we mainly introduce a User Service Triggering Management entity (USTM) which is in the charge of service triggering according to the service state information returned by ASs. After all of the improvements we have done, this mechanism can easily meet the requirements of providing lots of rich and colorful IMS services, and can effectively prevent the weak point of current IMS static service invocation.
Optimisation of poly(vinyl chloride) matrix membrane ion-selective electrodes for ammonium ions (1988)

Poly(vinyl chloride)(PVC) matrix membrane electrodes for the determination of ammonium ions have been studied with respect to sensor and solvent mediator parameters. Nonactin, narasin, monensin and salinomycin were used as sensors and dioctyl adipate, diethyl adipate, 2-nitrophenyl phenyl ether, dioctyl phenylphosphonate, dioctyl sebacate, dibutyl phthalate and tripentyl phosphate as solvent mediators. The best ion-selective electrodes (ISEs) for ammonium ions were based on nonactin with dioctyl adipate as the plasticising solvent mediator, and the electrode based on salinomycin with dioctyl adipate as solvent mediator was its closest rival. The use of the copolymer VAGH (with 6% hydroxyl as vinyl alcohol) admixed with PVC produces matrix membranes of similar ammonium ISE properties to the PVC system and the free hydroxyl groups offer prospects for enzyme immobilisation when setting up enzyme electrodes for the determination of ammonium ions.
La responsabilidad civil en el ámbito deportivo (2008)

En esta seccion realizamos un sucinto analisis legislativo, jurisprudencial y doctrinal del contenido de especial interes en materia de responsabilidad civil en el ambito deportivo, admitiendo que en la practica existe una escasa exigencia de responsabilidad civil en el deporte, al dificultarse la imputacion a tercero.
Comparison of the sensitivity & specificity of a polyclonal versus monoclonal capture antibody based Bead ELISA for direct detection of cholera toxin from stool specimens. (1996)

This study was conducted to examine whether substitution of polyclonal anti-CT IgG (PAb) coated beads with monoclonal anti-CT IgG, (MAb) coated beads would enhance the sensitivity and specificity of the Bead ELISA for direct detection of CT in stool samples of cholera patients. Sensitivity of MAb Bead ELISA was found to be more efficient (92.7%) than the PAb Bead ELISA (88.2%) in comparison to the 'gold standard' method of conventional culture method (CM). However, the MAb based Bead ELISA had lower specificity (45%) than that of PAb Bead ELISA (51.8%). Further, the positive predictive value was also lower in MAb Bead ELISA (69.9%) as compared to PAb Bead ELISA (82.1%). Generally, all the statistical evaluation demonstrated better agreement between PAb (77.9%) and MAb (72.6%) Bead ELISAs in direct detection of free CT and culture method in confirming the causative organism i.e., Vibrio cholerae in stool specimens. When the two assay systems, viz., PAb and MAb Bead ELISAs were compared, the superiority of the PAb Bead ELISA over MAb Bead ELISA was clearly evident as it had 82.4 per cent of agreement value.
Experimental Studies of Nanofluid Droplets in Spray Cooling (2009)

Spray cooling is used in cooling of electronic devices to remove large heat fluxes. Heat transfer to droplets impinging on a heated surface and boiling off has been studied. Most work is on a well-controlled system of a single drop falling onto a horizontal heated plate from a fixed height. These have revealed the droplet impingement mechanics to be a function largely of Weber number and excess temperature, and a range of regimes is observed similar to those in pool boiling, with a clearly identifiable critical heat flux. Nanofluids exhibit enhanced boiling heat transfer in pool boiling. The effect of nanoparticles on droplet boil-off was studied in this work. Nanofluid drops were let fall onto a surface at temperature greater than the saturation temperature, and behavior and heat flux were recorded and contrasted to that of a pure fluid. The working fluids used were pure water, ethanol, and dimethyl sulfoxide (DMSO) and ethanol– or DMSO–nanoparticle solutions (the nanoparticles were aluminum, with concentrations of up to 0.1% by weight in DMSO and 3.2% by weight in ethanol). High-speed photographic images of droplet evolution in time were obtained and indicate that there are differences in the behavior of nanofluid droplets as they boil off the surface, compared to pure fluids. Increasing nanoparticle concentration decreases the receding droplet breakup on rebound after impingement and appears to reduce the maximum spreading of a droplet as well. Maximum recoil height is reduced with increasing nanoparticle concentration. Experimental measurements of the heat fluxes associated with the pure and nanofluid droplets did not show significant enhancement, though there was noticeable improvement in the DMSO nanofluids.
MEMS technology in analytical chemistry (2002)

Microelectromechanical systems promise to revolutionize nearly every product category by bringing together silicon-based microelectronics with micromachining technology, moving us closer towards the realization of complete systems-on-a-chip. Anil Deisingh talks us through the basics of MEMS technology and the growing role of these new "micromachines" in analytical chemistry applications.
Getting the picture (2011)

The Last Picture Show, now 40 years old, stood on the cusp of Old and New Hollywood, as director Peter Bogdanovich explains to James Bell
Reassessment of 79B actin gene expression in the abdomen of adult <i>Drosophila melanogaster</i> (1997)

The expression pattern of the 79B actin gene in Drosophila melanogaster has been inferred previously by means of a reporter gene in which 79B actin promoter sequences drive the lacZ coding sequences. Although the 79B actin gene is expressed primarily in muscles of the thorax and first abdominal segment of the adults of both sexes, expression in the remaining abdominal segments appears limited to the male genital muscles and the male-specific Muscle of Lawrence (MOL). This reported abdominal expression pattern has been reassessed. By varying parameters of tissue preparation and lacZ reporter gene detection, expression of the 79B actin gene has been revealed in most dorsal abdominal longitudinal fibres and genital muscles of both females and males. These new results suggest that there are differences in the level of 79B actin gene expression among the various abdominal muscles of both sexes, and that abdominal expression is not limited primarily to male sex structures.
World seer (2012)

Twitter is a unique microblog which is different from conventional social media in terms of its quickness. Many Twitter's users send messages to Twitter on the spot with mobile phones or smart phones, and some of them send tweets with photos and geotags, which can be regarded as being geotagged photos. Geotagged tweet photos are very useful to understand what happens currently over the world. In the demo, we introduce "World Seer" which is a real-time geo-tweet photo mapping system. Users can see the latest geo-tweet photos related to given keywords and areas on the online maps. The system shows geo-tweet photos not only on the map, but also on the street-view. In addition, for some parts of the geo-tweet photos, the system can show representative photos for the given locations and the given times employing the GeoVisualRank method which takes into account both visual features of photos and proximity of geotags.
Chemical Imaging Using Microline Laser Ablation: Performance Comparison of Gaussian and Flat Top Lasers (2003)

In previous studies, the potential of a microline imaging arrangement for surface characterization of solid samples in air at atmospheric pressure using laser-induced plasma spectrometry (LIPS) has been demonstrated. An improvement of this approach to obtain a uniform ablation along the microline focus that leads to a representative spatial distribution of elements on the sample surface is presented. For this purpose, the influence of beam energy distribution of two types of Nd:YAG pulsed lasers (a Gaussian laser and a flat top laser) on lateral resolution, intensity profiles of elements, chemical distribution maps, and plasma electron temperature has been investigated. As models of homogeneous and compositionally patterned samples, a stainless steel sample and a photovoltaic cell were chosen for this study. The results demonstrated that the Gaussian laser provides the best lateral resolution, but more redeposition at both sides of the microline crater, while the chemical maps obtained with the flat top laser matched with the distribution of the constituents of the sample surface.
Gaze control in humans: eye-head coordination during orienting movements to targets within and beyond the oculomotor range (1987)

Gaze, the direction of the visual axis in space, is the sum of the eye position relative to the head (E) plus head position relative to space (H). In the old explanation, which we call the oculocentric motor strategy, of how a rapid orienting gaze shift is controlled, it is assumed that 1) a saccadic eye movement is programmed with an amplitude equal to the target's offset angle, 2) this eye movement is programmed without reference to whether a head movement is planned, 3) if the head turns simultaneously the saccade is reduced in size by an amount equal to the head's contribution, and 4) the saccade is attenuated by the vestibuloocular reflex (VOR) slow phase. Humans have an oculomotor range (OMR) of about +/- 55 degrees. The use of the oculocentric motor strategy to acquire targets lying beyond the OMR requires programming saccades that cannot be made physically. We have studied in normal human subjects rapid horizontal gaze shifts to visible and remembered targets situated within and beyond the OMR at offsets ranging from 30 to 160 degrees. Heads were attached to an apparatus that permitted short unexpected perturbations of the head trajectory. The acceleration and deceleration phases of the head perturbation could be timed to occur at different points in the eye movement. 4. Single-step rapid gaze shifts of all sizes up to at least 160 degrees (the limit studied) could be accomplished with the classic single-eye saccade and an accompanying saccadelike head movement. In gaze shifts less than approximately 45 degrees, when head motion was prevented totally by the brake, the eye attained the target. For larger target eccentricities the gaze shift was interrupted by the brake and the average eye saccade amplitude was approximately 45 degrees, well short of the OMR. Thus saccadic eye movement amplitude was neurally, not mechanically, limited. When the head's motion was not perturbed by the brake, the eye saccade amplitude was a function of head velocity: for a given target offset, the faster the head the smaller the saccade. For gaze shifts to targets beyond the OMR and when head velocity was low, the eye frequently attained the 45 degrees position limit and remained there, immobile, until gaze attained the target.(ABSTRACT TRUNCATED AT 400 WORDS)
Capacitor voltage clamped series resonant power supply with improved cross regulation (2003)

The performance characteristics are presented of a half-bridge series resonant converter (SRC) with a clamped resonant capacitor using the state-space technique. This converter topology has an advantage over the conventional SRC in that no energy is returned to the source; therefore, the peak current drawn from the source is limited and the power dissipation in the source impedances in practice is avoided. To verify the analytical results, a two-output power supply is designed and tested. The problem of cross regulation in the two outputs is solved by using a nonlinear inductor as a switch in one of the output circuits. The improvement in performance is illustrated with experimental results.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
质优价廉,环保美观——液晶显示器选购细斟酌 (2003)

液晶显示器曾几何时还是贵族产品中的一员,但是时下,液晶显示器早已脱下了高贵的外衣,逐步走入了寻常百姓的家庭。在过去的2002年当中,液晶显示器在显示器市场中对CRT显示器的霸主地位进行了强有力的挑战,市场宣传攻势一浪高过一浪,让消费者对液晶显示器的认知程度有了相当大的提高,随之而来的自然是市场份额的大幅度上升,大有取代CRT显示器占有主流市场地位的趋势。当然,这一切成绩的取得不不仅仅是市场宣传攻势的作用,最主要的还是技术方面具有相当多的优势,例如大家都很熟悉的优点:能够创造健康环保的使用环境,体积小、节省空间,具有个性化、时尚化的外观,低功耗、节能等等。这些优势所在,令消费者对它不得不投以青睐的目光。配合上液晶显示器的几次大降价,如今大多数的15英寸液晶显示器价格已经降至了2500元左右了,最低的已经达到了2000元以下,这样的价格已经完全可以令普通消费者所接受了,所以液晶显示器逐步占据显示器市场的主流已经成为不争的事实。
RESEARCH ON EXTRACT TECHNOLOGY OF GRAPE SEED POLYPHENOL EXTRACT (2005)

An extraction process of polyphenol from wine grape seeds was studied in this paper. Water was used as solvent and the material studied consisted of wine grape seeds, which was obtained from the pomace from wine vinification. Before extraction grape seed oil was squeezed out. Different factors were considered, such as grinding degree, material-water ratio, extract temperature, time, and frequency. Based on single factor tests, orthogonal test was done. Results showed that temperature was the most important factor, then frequency, time, and material-water ratio in turn, while grinding degree's effect on the extraction was not statistically evident. The optimum extraction conditions were as follows: 100 ℃ of water temperature, 1:9 of material-water ratio, 1.5h of extract time and 3 times. The concentration of the solution was about 1mg/mL. GSPE powder was produced by freeze drying, and the rate of production was about 3.3%.
Coagulation Studies After Transfusion of Hydroxyethyl Starch Protected Frozen Blood in Primates (1974)

This-study evaluates the effects of the transfusion of frozen-thawed blood protected by hydroxyethyl starch (HES) on shocked monkeys. Particular attention is directed toward the study of coagulation in view of previous reports of coagulopathies caused by hydroxyethyl starch. In vivo studies were done in 13 shocked monkeys that received either homologous or autologous blood which had been frozen and thawed with 14 per cent HES as the cryoprotective agent. Multiple coagulation studies were obtained on the monkeys, and histopathological evaluations were performed. There was no evidence of increased bleeding or bleeding tendencies in the monkeys transfused with HES preserved blood. Serum chemistry values were not significantly altered in animals that received blood preserved by HES nor in those that received large quantities of HES alone. Histopathological examination of biopsy and autopsy material demonstrated no changes which could be related to hydroxyethyl starch.