gebhart/patrepeval huggingface dataset:
Neural net robot controller with guaranteed tracking performance (2002)

A neural net (NN) controller for a general serial-link robot arm is developed. The NN has two layers so that linearity in the parameters holds, but the "net functional reconstruction error" is taken as nonzero. The structure of the NN controller is derived using a filtered error/passivity approach. It is shown that standard backpropagation, when used for real time closed-loop control, can yield unbounded NN weights if (1) the net cannot exactly reconstruct a certain required control function, or (2) there are bounded unknown disturbances in the robot dynamics. An online weight tuning algorithm including a correction term to backpropagation guarantees tracking as well as bounded weights. The notions of a passive NN and a robust NN are introduced.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
High-Temperature Thermometer Using Cr-Doped GdAlO3 Broadband Luminescence (2011)

A new concept has been developed for a high-temperature luminescence-based optical thermometer that both shows the desired temperature sensitivity in the upper temperature range of present state-of-the-art luminescence thermometers (above 1,300 C), while maintaining substantial stronger luminescence signal intensity that will allow these optical thermometers to operate in the presence of the high thermal background radiation typical of industrial applications. This objective is attained by using a Cr-doped GdAlO3 (Cr:GdAlO3) sensor with an orthorhombic perovskite structure, resulting in broadband luminescence that remains strong at high temperature due to the favorable electron energy level spacing of Cr:GdAlO3. The Cr:GdAlO3 temperature (and pressure) sensor can be incorporated into, or applied onto, a component s surface when a non-contact surface temperature measurement is desired, or alternatively, the temperature sensor can be attached to the end of a fiber-optic probe that can then be positioned at the location where the temperature measurement is desired. In the case of the fiber-optic probe, both the pulsed excitation and the luminescence emission travel through the fiber-optic light guide. In either case, a pulsed light source provides excitation of the luminescence, and the broadband luminescence emission is collected. Real-time temperature measurements are obtain ed using a least-squares fitting algorithm that determines the luminescence decay time, which has a known temperature dependence established by calibration. Due to the broad absorption and emission bands for Cr:GdAlO3, there is considerable flexibility in the choice of excitation wavelength and emission wavelength detection bands. The strategic choice of the GdAlO3 host is based on its high crystal field, phase stability, and distorted symmetry at the Cr3+ occupation sites. The use of the broadband emission for temperature sensing at high temperatures is a key feature of the invention and is novel since broadband luminescence emission normally shows severe thermal quenching. The tightly bound AlO6 octahedra in GdAlO3 results in a larger energy barrier to nonradiative decays than in other materials and therefore makes using broadband emission for temperature sensing possible at high temperatures. This approach results in a substantial increase in temperature capability. For example, the most commonly used Cr-doped crystal used for luminescence-based temperature measurements, ruby, has only been demonstrated up to 600 C, whereas the Cr:GdAlO3 optical thermometer under development has already been shown to exhibit useful luminescence up to 1,300 C. Because GdAlO3 is non-reactive and is stable in harsh, high-temperature environments, sensors composed of Cr:GdAlO3 will be very well suited for remote high-temperature measurements in engine or industrial environments where its intense high-temperature luminescence will stand out above significant thermal radiation background levels.
An online learning framework for predicting the taxi stand's profitability (2014)

Taxi services play a central role in the mobility dynamics of major urban areas. Advanced communication devices such as GPS (Global Positioning System) and GSM (Global System for Mobile Communications) made it possible to monitor the drivers' activities in real-time. This paper presents an online learning approach to predict profitability in taxi stands. This approach consists of classifying each stand based according to the type of services that are being requested (for instance, short and long trips). This classification is achieved by maintaining a time-evolving histogram to approximate local probability density functions (p.d.f.) in service revenues. The future values of this histogram are estimated using time series analysis methods assuming that a non-homogeneous Poisson process is in place. Finally, the method's outputs were combined using a voting ensemble scheme based on a sliding window of historical data. Experimental tests were conducted using online data transmitted by 441 vehicles of a fleet running in the city of Porto, Portugal. The results demonstrated that the proposed framework can provide an effective insight on the characterization of taxi stand profitability.
Angiostatin expression in ovarian cancer (2003)

Angiostatin is a potent inhibitor of neovascularization, tumor growth and metastasis. We examined the expression of angiostatin and vascular endothelial growth factor (VEGF) through immunohistochemical analysis, along with microvessel density, in primary tumors obtained from 55 ovarian carcinoma patients. Angiostatin expression was not related to either stage of disease or histology. However, VEGF expression and microvessel density were related to stage of disease. Angiostatin expression did not correlate with VEGF expression. Microvessel density correlated with VEGF, but not angiostatin expression. Univariate analysis revealed that lack of angiostatin expression, VEGF expression, microvessel density and advanced stage of disease were significant risk factors for reduced survival. Multivariate analysis revealed that lack of angiostatin expression and advanced stage of disease were significant risk factors for reduced survival. Survival time was longer in patients with angiostatin-positive and VEGF-negative tumors than in patients with angiostatin-negative and VEGF-positive tumors. The presence of angiostatin expression and absence of VEGF expression are favorable prognostic factors with regard to survival in ovarian carcinoma patients.
Interactions of molecules with nucleic acids. VI. Computer design of chromophoric intercalating agents (1982)

Abstract The mode of action of many antitumor agents entails the inhibition of nucleic acid synthesis. Because many of the drugs can intercalate, it is assumed that intercalation is an important step in the mechanism of biological activity. As intercalants contain a planar chromophore as an ingredient essential for intercalation, chromophores that should fit into DNA are desired. This is the main theme of this investigation. Binding to DNA of fundamental moieties, protonated pyridine, aniline, phenol, quinone, and 4H‐thiopyran‐4‐one, is studied to determine their optimum placement in DNA. The optimum orientations for each moiety are superimposed to form polyaromatic systems that can intercalate in a manner in which functional groups on these chromophores are oriented as in the moieties themselves. Ideal intercalants proposed contain three and four fused ring system, have protonated ring nitrogen atoms located to maximize the electrostatic interactions with DNA, hydroxy and amino groups that can hydrogen bond to the O II and O 5′ phosphate backbone atoms, and carbonyl and sulfur groups in the central position of the ring system to provide variations in the chromophore and to interact with the relatively positive region in the intercalation site. The optimum orientation occurs when the chromophore and the base pairs overlap to the maximum extent. The ideal intercalants are fundamentally of the type: magnified image
An Algorithm For Multichannel Coherent Digital Communications Over Long Range Underwater Acoustic Telemetry Channels (2005)

The problem of achieving reliable digi- tal communications over long range underwater acoustic telemetry channels is addressed, and a receiver algorithm for multichannel coherent data detection is presented. The receiver consists of a T/2 fractionally spaced bank of feedforward equalizers, a multichannel carrier phase syn- chronizer and a common decision feedback section of the equalizer. An adaptive algorithm is derived based on joint, minimum mean squared error optimization of the receiver parameters. The equalizer tap coefficients and estimates of the carrier phases are updated using a combination of a recursive least squares algorithm a,nd a second order mul- tichannel digital phase locked loop. Sinc,e the equalizer accomplishes the function of symbol synchronization, no separate delay locked loops are necessary. The algorithm is successfully applied to the experi- mental data. The results assert feasibilit,y of coherently combining multiple arrivals in each of tmhe diversit,y chan- nels, and demonstrate additional spatial diversity im- provement.
Synthesis of copolymerized porous organic frameworks with high gas storage capabilities at both high and low pressures (2014)

A series of copolymerized porous organic frameworks (C-POFs) were synthesized with monomers of tetrakis(4-bromophenyl)methane and tris(4-bromophenyl)amine in different ratios by a Yamamoto-type Ullmann cross-coupling reaction. These C-POFs exhibit high physicochemical stability, large surface areas and excellent H2, CH4 and CO2 adsorption properties both at low and high pressures.
Effect of Saccharomyces cerevisiae fermentation product on immune functions of broilers challenged with Eimeria tenella (2009)

Three hundred sixty 1-d-old male Arbor Acres broilers were randomly allotted to 6 groups with a 2x3 factorial arrangement of treatments. Three supplemental levels (0, 0.25, and 0.50%) of Saccharomyces cerevisiae fermentation product (XP) were fed to control and Eimeria tenella-infected broilers. Growth performance and immune response criteria were measured after coccidian infection. Broiler ADG was lowered (P<0.01) by coccidian infection and improved by XP supplementation (P=0.04). Supplementation of XP increased CD3+, CD4+, and CD8+ T-lymphocyte counts (P<0.05) and the ratio CD4+:CD8+ in blood (P=0.06) and spleen (P=0.04) as well as ileum intraepithelial lymphocyte count, cecal tonsil secretory IgA counts, serum lysozyme content (P<0.01), and albumin:globulin ratio (P=0.02). These results suggest that dietary XP supplementation could improve immune function and growth performance in coccidia-infected broilers.
Accident Prevention Using Eye Blinking and Head Movement (2012)

This paper describes a real-time online prototype driver-fatigue monitor. It uses remotely located charge-coupled-device cameras equipped with active infrared illuminators to acquire video images of the driver. Various visual cues that typically characterize the level of alertness of a person are extracted in real time and systematically combined to infer the fatigue level of the driver. The visual cues employed characterize eyelid movement, gaze movement, head movement, and facial expression. A probabilistic model is developed to model human fatigue and to predict fatigue based on the visual cues obtained. The simultaneous use of multiple visual cues and their systematic combination yields a much more robust and accurate fatigue characterization than using a single visual cue. This system was validated under real-life fatigue conditions with human subjects of different ethnic backgrounds, genders, and ages; with/without glasses; and under different illumination conditions. It was found to be reasonably robust, reliable, and accurate in fatigue characterization.
Nanostructures of the turbostratic BN transition layer in cubic BN thin films deposited by low-pressure inductively coupled plasma-enhanced chemical vapor deposition (2002)

Nanostructures of the turbo-stratic boron nitride (tBN) transition layer in cubic BN (cBN) thin films deposited on silicon substrates by low-pressure inductively coupled plasma-enhanced chemical vapor deposition have been studied by means of cross-sectional high-resolution transmission electron microscopy. The variation of tBN (0002) basal plane orientation at different growth stages, from random to texture and then random again, was observed. Quantitative analysis of tBN orientation revealed that cBN nucleation occurred when approximately 64% of the tBN c axis oriented parallel to the substrate surface in the angle ±10° and the distribution function drawn in a polar diagram was approximated by the function: cos6 (θ). At the interface between tBN and cBN, both hexagonal and rhombohedral configurations were observed, and both were found to act as structural precursors and/or deposition sites for cubic boron nitride nucleation. In addition, the compressed tBN configuration accompanied by d spacing contraction and distortion was directly observed.
Level of Asymmetric Dimethylarginine (ADMA) in Children with End Stage Renal Disease (ESRD) on Regular Hemodialysis (2011)

IJAR - Indian Journal of Applied Research (IJAR) IJAR is a double reviewed monthly print journal that accepts research works from scholars, academicians, professors, doctorates, lecturers, and corporate in their respective expertise of studies.
Adaptive technique for ATM call admission and routing control using traffic prediction by neural networks (2002)

This paper discusses a technique for call admission and routing control, based on a global quality function, which is dependent on the allocated bandwidth, the free network capacity and the call rejection rate, and incorporates quality of service functions, predicted by neural networks. The superior capability of this technique to support admission and routing decisions, according to the characteristics of the traffic generated by admitted calls, is demonstrated by simulation results carried out using suitable traffic and network models, which are equally discussed. It is also shown that the proposed technique, being based on several observed traffic parameters, offers better results than methods based only on declared bandwidth parameters.
Accuracy of the Discrete Fourier Transform and the Fast Fourier Transform (1996)

Fast Fourier transform (FFT)-based computations can be far more accurate than the slow transforms suggest. Discrete Fourier transforms computed through the FFT are far more accurate than slow transforms, and convolutions computed via FFT are far more accurate than the direct results. However, these results depend critically on the accuracy of the FFT software employed, which should generally be considered suspect. Popular recursions for fast computation of the sine/cosine table (or twiddle factors) are inaccurate due to inherent instability. Some analyses of these recursions that have appeared heretofore in print, suggesting stability, are incorrect. Even in higher dimensions, the FFT is remarkably stable.
Effects of bridge pattern on performance of YBaCuO microbolometers (2002)

The effects of bridge pattern on the performance of YBaCuO microbolometers were investigated. For this purpose, Si3N4 bridges with grids and hinges of varying width were created on Si wafers by means of bulk Si micromachining. Semiconducting YBaCuO films were sputter-deposited onto the bridges to form resistive bolometers. In reducing the width of the hinges from 10 to 5 μm, one can enhance the bolometric responsivity by approximately two times at room temperature. Further, a factor of enhancement of as large as three could be achieved on bridges with a grid pattern. The grid pattern also modified the spectral absorbance of the bridges. The enhancement of experimental responsivity was shown to be consistent with the one predicted from changes in thermal conductance, electrical resistance, and optical absorbance of the bolometers.
A semipermeable skin dressing for extremely low birth weight infants. (1997)

Skin breakdown and high fluid requirements are common problems in extremely low birth weight infants that may be reduced by application of a semipermeable skin dressing (SPD). An SPD was applied to 39 study infants who weighed < 1000 gm (control subjects, n = 37) to determine whether it would protect the skin and decrease fluid requirements. Randomization occurred before 12 hours of life and SPD was applied to the chest, abdomen, and back. Sixty-one infants survived the first 14 days. Skin remained nonerythematous, intact, and undamaged under the dressing, whereas uncovered skin sustained significant breakdown in both groups. No significant differences were found in fluid or electrolyte status. Although the SPD did not affect fluid requirements, the significant improvement in skin integrity under the SPD may justify its use in premature infants with delicate skin.
Comparison of amplitude distributions for Hadamard spreading and Fourier spreading in multi-carrier code division multiplexing (2002)

We investigate amplitude distributions of transmit signals for multi-carrier spread spectrum (MCSS) transmission methods based on orthogonal frequency division multiplexing (OFDM), also called multi-carrier code division multiplexing (MC-CDM). In particular we compare Fourier spreading with the commonly used Walsh-Hadamard spreading. As a basis for the comparison we describe a general model. Both up- and downlink of multiple access transmission schemes employing either multi-carrier code division multiple access (MC-CDMA) or multi-carrier frequency division multiple access (MC-FDMA) are compared.
Optic Nerve Degeneration and Potential Neuroprotection: Implications for Glaucoma (1999)

In order to study the course of optic nerve degeneration and devise possible ways to achieve neuroprotection, a well-controlled, animal model of partial crush injury of the optic nerve was used. Following the controlled partial crush injury of the rat optic nerve, quantitative morphological and electrophysiological measurements were made of primary and secondary neuronal losses. The neuroprotective effects of NMDA-receptor antagonists and alpha 2-adrenoreceptor agonists were also studied. The results suggested that the ongoing progression of the optic nerve degeneration in glaucoma might be a consequence of the toxic extracellular environment produced by neurons that degenerate as a result of the primary cause of the disease (such as increased IOP).
Reliability of Fingertip Skin-surface Temperature and its Related Thermal Measures as Indices of Peripheral Perfusion in the Clinical Setting of the Operating Theatre (2004)

During the perioperative period, evaluation of digital blood flow would be useful in early detection of decreased circulating volume, thermoregulatory responses or anaphylactoid reactions, and assessment of the effects of vasoactive agents. This study was designed to assess the reliability of fingertip temperature, core-fingertip temperature gradients and fingertip-forearm temperature gradients as indices of fingertip blood flow in the clinical setting of the operating theatre. In 22 adult patients undergoing abdominal surgery with general anaesthesia, fingertip skin-surface temperature, forearm skin-surface temperature, and nasopharyngeal temperature were measured every five minutes during the surgery. Fingertip skin-surface blood flow was simultaneously estimated using laser Doppler flowmetry. These measurements were made in the same upper limb with an IV catheter (+ IV group, n=11) or without an IV catheter (-IV group, n=11). Fingertip blood flow, transformed to a logarithmic scale, significantly correlated with any of the three thermal measures in both the groups. Their rank order as an index of fingertip blood flow in the -IV group was forearm-fingertip temperature gradient (r=-0.86) > fingertip temperature (r=0.83) > nasopharyngeal-fingertip temperature gradient (r=-0.82), while that in the +IV group was nasopharyngeal-fingertip temperature gradient (r=-0.77) > fingertip temperature (r=0.71) > forearm-fingertip temperature gradient (r=-0.66). The relation of fingertip blood flow to each thermal measure in the -IV/group was stronger (P<0.05) than that in the +IV group. In the clinical setting of the operating theatre, using the upper limb without IV catheters, fingertip skin-surface temperature, nasopharyngeal-fingertip temperature gradients, and forearm-fingertip temperature gradients are almost equally reliable measures of fingertip skin-surface blood flow.
Bacteriuria During Indwelling Catheter Drainage (1970)

Fifty-one abacteriuric patients requiring prolonged catheter drainage were studied with a new closed sterile drainage system including a nonreturn valve designed to limit reflux of urine from collection bag to drainage tube. Twenty-eight patients remained abacteriuric during the entire period of catheter drainage. In 20 of 27 instances of bag contamination, a delay of at least 24 hours was noted before bladder urine became infected. Closed sterile drainage of the urinary bladder is effective in preventing catheter associated urinary tract infections for short periods. Ascending infection throngh the lumen of the drainage tube is the major pathway by which bacteria infect bladder urine.
Poetry as the Play of Signifiers (1985)

Poetry as the Play of Signifiers Get access LAURENCE LERNER LAURENCE LERNER Vanderbilt UniversityTennessee Search for other works by this author on: Oxford Academic Google Scholar Essays in Criticism, Volume XXXV, Issue 3, July 1985, Pages 238–259, https://doi.org/10.1093/eic/XXXV.3.238 Published: 01 July 1985
The Notch and TGF-β Signaling Pathways Contribute to the Aggressiveness of Clear Cell Renal Cell Carcinoma (2011)

An extensive cross-talk between the Notch and TGF-β signaling cascades is present in CCRCC and the functional properties of these two pathways are associated with the aggressiveness of this disease.
Transmission-electron microscope studies of Au-Ni-Ge based ohmic contacts to GaAs-AlGaAs MODFET device (1987)

A technique is developed to obtain cross-sectional transmission-electron microscope specimen of a specifically desired region of semiconducting devices. A Au-Ge-Ni based metallization scheme is used to obtain low resistivity ohmic contact to GaAs-AlGaAs based modulation-doped field-effect transistors device. Cross-sectional electron microscopy and energy dispersive x-ray analysis revealed that a uniformly alloyed region (Ni-Ge-As) can be obtained through the proposed metallization scheme. Transmission-electron diffraction, high-resolution electron microscopy, and optical-diffraction analyses are employed to determine the various phases in the contact region. Movement of contact materials both parallel and perpendicular to the device surface is observed at the metallization edges after alloying. Contacts stressed at elevated temperatures to the point of incipient instability are found to exhibit a rougher metal/semiconductor interface.
[Clinical significance of measurement of PIIIP, laminin P1, type IV-C and 7S in patients with chronic liver diseases--with special reference to histological findings]. (1992)

Four markers for hepatic fibrosis--N-terminal peptide of Type III procollagen (PIIIP), Laminin P1 (laminin), Type IV collagen (Type IV-C), and 7S domain (7S)--were measured in the sera of 90 patients with various chronic liver diseases diagnosed by liver biopsy--fatty liver (FL), chronic inactive hepatitis (CIH), chronic active hepatitis (CAH), and liver cirrhosis (LC)--and in the sera of 20 healthy controls. The values of markers were compared with the grade of histologic findings of the liver. Four markers were significantly raised in the CAH group and the LC group, and they were considered to be indicators of hepatic fibrosis. PIIIP reflected necrosis and inflammation as well as fibrosis of the liver. Laminin, Type IV-C, and 7S reflected severe fibrosis. 7S was considered to be useful marker for liver cirrhosis.