gebhart/patrepeval huggingface dataset:
Light-Weight 3D LADAR System for Construction Robotic Operations (2009)

Light-Weight 3D LADAR System for Construction Robotic Operations Yong K. Cho, Diego Martinez Pages 237-244 (2009 Proceedings of the 26th ISARC, Austin, USA, ISBN 978-0-578-02312-0, ISSN 2413-5844) Abstract: This paper presents an on-going research on a light-weight 3-dimensional (3D) laser distance and ranging (LADAR) system development at the Peter Kiewit Institute (PKI) in University of NebraskaLincoln. The developed LADAR can be readily applied to several construction applications related to automated or robotic tasks, mobile robot navigation, reverse engineering, quality assurance/control, schedule control, and safety. A design concept of a LADAR system on a dynamic mobile platform is introduced which is especially designed for precise construction robotic operations such as welding, bolting, and connecting materials. Barriers for rapid 3D graphical workspace visualization at construction sites are discussed as well. The preliminary laboratory test results demonstrate that the 3D LADAR scanner developed in this study provides reliable scanned data. Unlike most of the heavy and bulky commercial LADAR products, the developed economical LADAR system can be used on mobile platforms and manipulators or confined area scanning applications due to its small size and light-weight characteristics. Keywords: 3D scanner, LADAR, laser, visualization, robotics, construction automation, error DOI: https://doi.org/10.22260/ISARC2009/0050 Download fulltext Download BibTex Download Endnote (RIS) TeX Import to Mendeley
BIOMOC, a multispecies solute-transport model with biodegradation (1997)

A two-dimensional, multispecies reactive solute-transport model with sequential aerobic and anaerobic degradation processes was developed and tested. The model design is general and flexible, permitting simulation of biotransformation reactions for any combination of electron donor and acceptor. In addition, the evolution of redox zones can be simulated, as thermodynamically-favorable electron acceptors are depleted. The code is an extension of the U. S. Geological Survey's Method of Characteristics (MOC) flow and transport model. It allows for multiple particle sets and each particle set is capable of having multiple solute species with similar sorption characteristics. The rate of the degradation reactions can be represented by single-substrate Monod, multiple Monod, or minimum Monod kinetics. Four alternate inhibition formulations account for competitive, noncompetitive, biomass, or Haldane inhibition. Multiple degradation processes and microbial populations can be represented simultaneously. Growth of the biomass is modeled with specified yield and decay values.
The <i>fixA</i> and <i>fixB</i> Genes Are Necessary for Anaerobic Carnitine Reduction in <i>Escherichia coli</i> (2002)

In Escherichia coli, the use of carnitine as a terminal electron acceptor depends on a functional caiTABCDE operon. It had been suggested that the adjacent but divergent fixABCX operon is also required for carnitine metabolism, perhaps to provide electrons for carnitine reduction. We have constructed E. coli fixA and fixB mutants and find that they are unable to reduce carnitine to gamma-butyrobetaine under anaerobic conditions.
Computational intensive methods for prediction and imputation in time series analysis (2011)

One of the main goals in times series analysis is to forecast future values. Many forecasting methods have been developed and the most successful are based on the concept of exponential smoothing, based on the principle of obtaining forecasts as weighted combinations of past observations. Classical procedures to obtain forecast intervals assume a known distribution for the error process, what is not true in many situations. A bootstrap methodology can be used to compute distribution free forecast intervals. First an adequately chosen model is fitted to the data series. Afterwards, and inspired on sieve bootstrap, an AR(p) is used to filter the series of the random component, under the stationarity hypothesis. The centered residuals are then resampled and the initial series is reconstructed. This methodology will be used to obtain forecasting intervals and for treating missing data, which often appear in a real time series. An automatic procedure was developed in language and will be applied in simulation studies as well as in real examples. 122 M.M. Neves and C. Cordeiro
Convexity/concavity of renyi entropy and &#x03B1;-mutual information (2015)

Entropy is well known to be Schur concave on finite alphabets. Recently, the authors have strengthened the result by showing that for any pair of probability distributions P and Q with Q majorized by P, the entropy of Q is larger than the entropy of P by the amount of relative entropy D(P||Q). This result applies to P and Q defined on countable alphabets. This paper shows the counterpart of this result for the Rényi entropy and the Tsallis entropy. Lower bounds on the difference in the Rényi (or Tsallis) entropy are given in terms of a new divergence which is related to the Rényi (or Tsallis) divergence. This paper also considers a notion of generalized mutual information, namely α-mutual information, which is defined through the Rényi divergence. The convexity/concavity for different ranges of α is shown. A sufficient condition for the Schur concavity is discussed and upper bounds on α-mutual information are given in terms of the Rényi entropy.
Synthesis and Properties of a Novel Epoxy Resin Containing 1,1'-Binaphthalene Moiety (2003)

A novel epoxy resin containing 1,1?binaphthalene moiety was synthesized by the reaction of epichlorohydrin with 2,2'-dihydroxy-1,1'-binaphthalene,which was obtained via oxidative coupling of 2-naphthol. The molecular structure and the mechanism for the reaction were analyzed by FT-IR spectra. The properties of the polymer were studied. The cured resin shows good thermal and mechanical properties.
A MIMO Dielectric Resonator Antenna With Improved Isolation for 5G mm-Wave Applications (2019)

A multiple-input–multiple-output dielectric resonator antenna with enhanced isolation is proposed in this letter for the future 5G millimeter (mm)-wave applications. Two rectangular dielectric resonators (DRs) are mounted on a substrate excited by rectangular microstrip-fed slots underneath DRs. Each DR has a metal strip printed on its upper surface moving the strongest part of the coupling field away from the exciting slot to improve the isolation between two antenna elements. The proposed antenna obtains a simulated impedance bandwidth ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">S</i> <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</sub> ≤ –10 dB) from 27.25 to 28.59 GHz, which covers the 28 GHz band (27.5–28.35 GHz) allocated by the Federal Communications Commission for the 5G applications. A maximum improvement of 12 dB on the isolation over 27.5–28.35 GHz is achieved. The mechanism of the isolation improvement and the design procedure are given in this letter. A prototype is manufactured and measured as a validation of the proposed decoupling method.
Multipole method for microstructured optical fibers II Implementation and results (2002)

We describe the numerical verifications of a multipole formulation for calculating the electromagnetic properties of the modes that propagate in microstructured optical fibers. We illustrate the application of this formulation to calculating both the real and the imaginary parts of the propagation constant. We compare its predictions with the results of recent measurements of a low-loss microstructured fiber and investigate the variations in fiber dispersion with geometrical parameters. We also show that the formulation obeys appropriate symmetry rules and that these rules may be used to improve computational speed.
The Claiborne Group in southwest Arkansas (1988)

Abstract Although the middle Eocene age Claiborne Group of southwest Arkansas covers a large area, outcrops are sparse. The easily erodable Claiborne is composed of unconsolidated sand, silt, clay, and lignite. It has a maximum thickness of 1,500 ft (457 m) in Arkansas, generally strikes to the northeast, and dips an average 60 ft to the mi (11 m to the km) to the southeast. The exposures at Camden and Red River in southwestern Arkansas (Fig. 1) display features of a deltaic plain environment. The two exposures are 75 mi ( 120 km) apart and are probably of different parts of the Claiborne section. Currently, the Claiborne Group is interpreted as having accumulated in fluvial-deltaic system. Studies by Bernard and others (1970) have established a classification scheme of sedimentary environments within deltas. Texture, fabric, sedimentary features, geometry, and trends of sediments associated with deltas are controlled by geologic processes and the availability and influx of different sediment types. Based on these criteria, delta depositional environments have been divided into (1) delta plain with natural levees, distributary channels, interdistributary marshs, and flood basins; (2) inner fringe with rivermouth bars; (3) outer fringe; (4) prodelta; and (5) open marine (Figs. 2 and 3). These environments are discussed within the context of high sediment influx, low energy type of coastal delta (birdfoot, lobate) interpretation of the Claiborne Depositional system, as opposed to low sediment, high coastal energy deltas (arcuate, estuarine).
MOSAIC: a model-based change detection process (2003)

Eastman Kodak has developed a technique called MOSAIC, for Multi-modality Operational Site Analysis and Intelligent Change detection. This technique is based on the application of faceted site models and synthetic image generation (SIG) tools in tandem with material identification using relative reflectance properties derived from imagery and/or feature maps. This presentation will step through key accomplishments in the past two phases of the projects evolution; the technique feasibility demonstration and initial development accomplished under NRO/AS&T charter, and subsequent application of this technique towards the NIMA objective of automatic change detection and update of GIS features including buildings, roads, and river-ways using 3-D volumetric models. Performance examples will be provided, along with a discussion of relationships to other NIMA and Air Force programs.
Picosecond Polarization Spectroscopy of Dye Molecules (1982)

Abstract Theoretical and experimental data are presented on the propagation of picosecond pulses in weakly excited dye solutions. We report a new version of the pump and probe technique, measuring induced dichroism at variable probe pulse frequency. It is shown that the so‐called “coherence peak” in experiments with equal pump and probe frequencies depends on the vibronic relaxation and excited state absorption of the dye molecules. Measurements with different pump and probe frequencies allow to distinguish rotational relaxation times in different electronic states. Interpretation of the experimental data is considerably facilitated at the low excitation intensities used here. Experimental results for vibronic and rotational time constants on phenoxazone 9 and rhodamine 6G are presented.
Anomaly detection from multivariate time-series with sparse representation (2014)

Anomaly detection from sensor data is an important data mining application for efficient and secure operation of complicated systems. In this study, we propose a novel anomaly detection method for multivariate time-series to capture relationships of variables and time-domain correlations simultaneously, without assuming any generative models of signals. The supposed framework in this study is a semi-supervised anomaly detection where we seek unusual parts of test data compared with reference data. The proposed method is based on feature extraction with sparse representation and relationship learning with dimensionality reduction. Our idea comes from the similarity between a sparse feature matrix extracted from multivariate time-series and a term-document matrix. We conducted experiments with synthetic and simulated data, and confirmed that the proposed method successfully detected anomalies in multivariate time-series signals. Especially, it demonstrated superior performance with anomalies in which only relationships of time-series patterns are changed from reference data (multivariate anomalies).
Drug-eluting stents: the next generation (2010)

The small but absolute increase in late and very late stent thrombosis associated with drug-eluting stent technology may in part be related to the permanent, durable polymers currently employed with these stent platforms. Research has recently focused on two strategies to combat this problem; bioabsorbable polymers and polymer-free stents. This article critically reviews the key clinical trials and recent conference updates surrounding these two approaches and future directions for technology development.
Study on Fiber Optic Oxygen Sensor Based on Fluorescence Quenching (2001)

A kind of fiber optic oxygen sensor based on fluorescence quenching has been studied. Using the phase lock enlargement technology, the concentration of oxygen has been detected by detecting the hysteresis of phase shift. The sensor has high detecting precision. good reproducibility and stability, fast response and strong ability of immunity from disturbance.
Performability management in distributed database systems: an adaptive concurrency control protocol (2002)

An adaptive concurrency control protocol is proposed for distributed database systems where data and resource contention have adverse effects on performability. The protocol dynamically switches between two existing concurrency control mechanisms, namely, an optimistic one called the "exclusive writer with locking option" and a pessimistic one referred to as "primary site locking." Adaptation is based on partial knowledge about the system that is available locally at any database site such that no overhead (no additional inter-database site message exchange for collecting information) is incurred. The evaluation results indicate a potential for significant gains in performability from the use of adaptive concurrency control techniques.
An improved magnetic servo amplifier (1952)

OF THE potential applications of magnetic amplifiers, one of the most promising is in the field of automatic feedback controls. In such systems, reliability of operation is frequently as important in design considerations as the operational characteristics themselves. For this reason, the replacement of relatively short-lived vacuum tube amplifiers with long-lived, rugged, and reliable magnetic amplifiers is an extremely desirable thing provided the minimum operational characteristics can be met using the magnetic amplifier.
Fertilization effect on fruiting of young Jatropha curcas plantations. (2009)

Fertilization is generally one of the most important measures to promote the growth,yield and quality of forest.A random block fertilization experiment was conducted to study the effect of fertilizers on fruiting of the young Jatropha curcas plantations.The results showed that the single nitrogen fertilizer did not have much effect on the fruiting,while the pure phosphorus or pure potassium fertilizer could significantly promote the seed yield of the young J.curcas plantations.With fixed dosages of nitrogen and potassium fertilizers,when the dosage of phosphorous fertilizer was over a certain level,it did not have significant promotion effect on fruit production.The study also indicated that the fertilization did not have obvious effect on increasing the kernel or oil yield of the fruits born by the young plantations of J.curcas.
An analysis of laminar free-convection flow and heat transfer about a flat plate parallel to the direction of the generating body force (1953)

From Introduction: "The problem of free-convection flow as produced by a body force about a flat plate in the direction of the body force was studied at the NACA Lewis laboratory and is treated in a formal and more general manner herein. The method used is somewhat similar to that used in reference 4 wherein consideration was given to the free-convection flow at high Grashof numbers in a horizontal cylinder which had a variable surface-temperature distribution. In addition, the numerical solutions of references 2 and 3 are herein extended to cover a more complete range of variables."
Aerodynamic Inner Workings of Circumferential Grooves in a Transonic Axial Compressor (2007)

The current paper reports on investigations of the fundamental flow mechanisms of circumferential grooves applied to a transonic axial compressor. Experimental results show that the compressor stall margin is significantly improved with the current set of circumferential grooves. The primary focus of the current investigation is to advance understanding of basic flow mechanics behind the observed improvement of stall margin. Experimental data and numerical simulations of a circumferential groove were analyzed in detail to unlock the inner workings of the circumferential grooves in the current transonic compressor rotor. A short length scale stall inception occurs when a large flow blockage is built on the pressure side of the blade near the leading edge and incoming flow spills over to the adjacent blade passage due to this blockage. The current study reveals that a large portion of this blockage is created by the tip clearance flow originating from 20% to 50% chord of the blade from the leading edge. Tip clearance flows originating from the leading edge up to 20% chord form a tip clearance core vortex and this tip clearance core vortex travels radially inward. The tip clearance flows originating from 20% to 50% chord travels over this tip clearance core vortex and reaches to the pressure side. This part of tip clearance flow is of low momentum as it is coming from the casing boundary layer and the blade suction surface boundary layer. The circumferential grooves disturb this part of the tip clearance flow close to the casing. Consequently the buildup of the induced vortex and the blockage near the pressure side of the passage is reduced. This is the main mechanism of the circumferential grooves that delays the formation of blockage near the pressure side of the passage and delays the onset of short length scale stall inception. The primary effect of the circumferential grooves is preventing local blockage near the pressure side of the blade leading edge that directly determines flow spillage around the leading edge. The circumferential grooves do not necessarily reduce the over all blockage built up at the rotor tip section.
Prognostic value of IDH1 mutations identified with PCR-RFLP assay in acute myeloid leukemia patients (2013)

IDH1 mutations are recurring genetic alterations in AML and they may have unfavorable impact on clinical outcome in adult AML. The PCR-RFLP method allows for a fast, inexpensive, and sensitive method for the detection of IDH1 mutations in AML.
S‐potentials from luminosity units in the retina of fish (Cyprinidae) (1966)

1. S-potentials were recorded in fish from units which never responded by depolarization. These hyperpolarizing units are the L-units of Svaetichin & MacNichol (1958).2. Figure 5 shows some sets of action spectra from a single unit. For each curve the criterion of action was hyperpolarization to a fixed level, by lights of various wave-lengths. When these lights fell upon zero background (circles) the curves show that two kinds of cone contribute to the action spectrum, one with the 620 nm pigment of Marks and one with the 680 nm pigment of Naka & Rushton (1966a).3. When the lights fell upon (i) a fixed green background (triangles, Fig. 5), or (ii) a fixed red one (squares), the action spectra changed in a way that indicated greater prominence of (i) the 680 nm system (ii) the 540 nm green system that was not conspicuous without adaptation to red.4. These observations (on the tench Tinca) are contrary to the conclusions of Svaetichin & McNichol (on Gerridae) that the action spectrum is unaltered in shape by adaptation to coloured lights. The contribution of the green cones, for example, was actually absolutely greater under deep red adaptation.5. It is concluded that L-units receive signals from 680, 620, 540 nm and possibly also the blue cones, that the quantum catch in all these contribute to the hyperpolarization produced, but their interaction is more complicated than the simple addition of independent cone effects.
Comment on “The use of CR-39 in Pd/D co-deposition experiments” by P.A. Mosier-Boss, S. Szpak, F.E. Gordon and L.P.G. Forsley Interpreting SPAWAR-type dominant pits (2008)

A recent claim [Eur. Phys. J. Appl. Phys. 40, 293 (2007)] demonstrating a nuclear process triggered by electrolysis is challenged. An analysis, based on relative diameters, is used to demonstrate that predominant pits could not possibly be attributed to alpha particles, or to less massive nuclear projectiles. This conclusion is supported not only by positive results from a replication experiment, but also by results from the experiment on which the original claim was based. While the numerous SPAWAR-type pits seem to be highly reproducible, their interpretation is not yet clear.
Green approach for synthesizing Pyrimido pyrimidine moieties using TBAB (2016)

An efficient and direct procedure for the synthesis of pyrimido[4,5-d] pyrimidine derivatives from three component condensation of an aromatic aldehyde, urea/ thiourea and barbituric acid was carried out by using aqueous tetrabutyl ammonium bromide (TBAB) under solvent-free microwave conditions, which devoids hazards of solution phase reactions. The reaction time has been brought down from minutes to seconds with improved yield as compared to reported method.
Alcaloides bencilisoquinolínicos del tallo de piper augustum rudge (1998)

Del extracto etanólico del tallo de P. augustum Rudge se aislaron: 3beta-hidroxi- 24-etil-delta5.22colestadieno (estigmasterol) I ; l,2-metilendioxi-6-metil-4H-dibenzo(deg) quinolina-4,5(6H)diona (Cepharadione A) II; lactama del ácido lO-amino-3,4- dimetoxifenantreno-1-carboxílico (Cepharanone B) n i y el nuevo compuesto natural: lactama del ácido N-metil-lO-amino- 4-hidroxi-2,3-dimetoxifenantreno-1 –carboxílico IV, Todos los compuestos fueron identificados mediante técnicas espectroscópicas (EM, RMN 'H y "C, IR y UV) y comparación con datos reportados en la literatura; adicionalmente I y II fueron identificados por comparación con muestras auténticas (CCF, pf, y pf, mixto). El extracto etanólico del tallo de Piper augustum Rudge presentó una moderada actividad biológica (DL50 = 350 ppm) según el ensayo de mortalidad de Artemia salina Leach (Brine Shrimp Lethality).
Variable-rate multi-stage vector quantization for image coding (2003)

A hierarchical approach to encoding of images using vector quantization (VQ) is described which allows VQ of large blocks with a tolerable computational complexity and permits progressive image reconstruction at bit rates as low as 0.3 bit/pixel. The technique used, multi-stage hierarchical VQ (MSHVQ), is a successive approximation approach for quantization that is based on recursive decomposition of larger image blocks into smaller subblocks. The encoder of MSHVQ consists of several stages, each of which encodes the quantization error generated from the previous stage. Digital decimation and interpolation techniques are used to convert between different vector dimensions in the higher level stages and to reduce the otherwise highly noticeable blocking effect in the reconstructed image. Variable-rate encoding increases the compression efficiency by allocating greater resolution to high-detail regions and provides a perceptually more consistent image quality throughout all areas of the decoded image. Experimental results show that MSHVQ yields a significantly improved image quality over conventional VQ of equivalent complexity.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>