gebhart/patrepeval huggingface dataset:
Quantifying Seismic Amplitude Distortions Below Salt (1997)

Abstract Interpretation, drilling, and discovery of subsalt reservoirs has been enabled by development of 3-D prestack depth migration of large marine 3-D seismic surveys. Although this technology has greatly improved imaging below salt, questions remain about amplitude variations in the data. This investigation uses raytrace modeling to study the aerial variations in the amplitudes of the subsalt reflections causedby complex salt structures and by large overlying velocity variations. The ultimate goal of this research is to understand the distortions and subtract them from the data, so that themore subtle variations in the seismic response caused by gas, oil. or brine in the reservoir rocks may be ascertained. A 3-D computer model was built from the seismic and velocity volumes prodUced by 3-D prestack migration. Northsouth and east-west oriented 3-D seismic surveys were simulated in the model using Landmark's QUIKSHOTprogram. The raytracing results were sorted into reflection point gathers similar to the migration process used in 3-D prestack depth migration. Maps of the rays that hit a reflection-point bin and of the total and average amplitude per bin were prepared and analyzed. The following results were produced:Below the salt, hits per bin vary from 0 to 200 for data shot with geometric 30-fold coverage.The tota1 amplitude per bin varies by more than an order of magnitude.The edges of the salt bodies cause extensive distortion because of the salt's steep slopes and the bending of the rays that pass through the salt compared to those that do not.The salt shapes are so complex that generalizations are difficult and 3-D seismic modeling is needed to understand subsalt coverage.There are large differences in subsalt coverage between surveys shot in different directions. A multi-directional 3-D shoot would add significantly to the true reflection-point fold in most areas under sall Introduction As of December 1996, at least 7 subsalt discoveries have been reported in the Gulf of Mexico (Moore and Brooks, 1997) 1. A significant contribution to these successes was the availability of prestack depth migration (PDM) of 3-D seismicsurveys. In many areas the advent of 3-D PDM enabled imaging of the subsalt structures for the rust time (Ratcliff and Weber. 1997)2. But areas still exist that are difficult to interprel Figure 1 shows a north-south line from the 3-D prestack depth migrated line over the Mahogany No. 1 discovery well. Near the well horizons are mappable. But to the north the subsalt data is difficult to interpret. Under the edges of the salt thedata become noisy and it is difficult to follow a reflector through this area. This study uses raytrace modeling to explain the seismic response observed below salt and to identify improvements in data acquisition. Another reason touse raytracing is that most 3-D prestack depth migrations currently use raytracing to move the energy recorded to its proper spatial position.
Look, Listen, and Act: Towards Audio-Visual Embodied Navigation (2020)

A crucial ability of mobile intelligent agents is to integrate the evidence from multiple sensory inputs in an environment and to make a sequence of actions to reach their goals. In this paper, we attempt to approach the problem of Audio-Visual Embodied Navigation, the task of planning the shortest path from a random starting location in a scene to the sound source in an indoor environment, given only raw egocentric visual and audio sensory data. To accomplish this task, the agent is required to learn from various modalities, i.e., relating the audio signal to the visual environment. Here we describe an approach to audio-visual embodied navigation that takes advantage of both visual and audio pieces of evidence. Our solution is based on three key ideas: a visual perception mapper module that constructs its spatial memory of the environment, a sound perception module that infers the relative location of the sound source from the agent, and a dynamic path planner that plans a sequence of actions based on the audio-visual observations and the spatial memory of the environment to navigate toward the goal. Experimental results on a newly collected Visual-Audio-Room dataset using the simulated multi-modal environment demonstrate the effectiveness of our approach over several competitive baselines.
<title>Focus-1 x-ray fluorescent spectrometer</title> (2000)

An energy dispersive XRF spectrometer equipped with a capillary lens having a spot size of 200 micrometers has been developed in the Institute of Roentgen Optics. A compact semiconductor Si-PIN detector with thermoelectric cooling is used to realize a portable instrument assembled in a carrying case. Some applications and examples of analyses are given.
Milli-RIO: Ego-Motion Estimation With Low-Cost Millimetre-Wave Radar (2020)

Robust indoor ego-motion estimation has attracted significant interest in the last decades due to the fast-growing demand for location-based services in indoor environments. Among various solutions, frequency-modulated continuous-wave (FMCW) radar sensors in millimeter-wave (MMWave) spectrum are gaining more prominence due to their intrinsic advantages such as penetration capability and high accuracy. Single-chip low-cost MMWave radar as an emerging technology provides an alternative and complementary solution for robust ego-motion estimation, making it feasible in resource-constrained platforms thanks to low-power consumption and easy system integration. In this paper, we introduce Milli-RIO, an MMWave radar-based solution making use of a single-chip low-cost radar and inertial measurement unit sensor to estimate six-degrees-of-freedom ego-motion of a moving radar. Detailed quantitative and qualitative evaluations prove that the proposed method achieves precisions on the order of few centimeters for indoor localization tasks.
A prospective study of computer users: I. Study design and incidence of musculoskeletal symptoms and disorders (2002)

H/A and N/S MSS and MSD were common among computer users. More than 50% of computer users reported MSS during the first year after starting a new job.
Quantum dot lasers (2002)

We presents both edge emitting and surface emitting quantum dot laser research. Growth is by both MOCVD and MBE.
The Effect of Engine Misfire on Exhaust Emission Levels in Spark Ignition Engines (1995)

<div class="htmlview paragraph">One of the gray areas in the implementation of regulations limiting the generation of pollutants from mobile sources is the actual effectiveness of the exhaust gas emissions control strategy in vehicles that have been in use for some time. While it is possible today to conduct limited diagnostics with the on-board engine computer by performing periodic checks to verify the validity of the signals measured by the on-board sensors, and to measure tailpipe emissions during routine inspection and maintenance, the task of correlating these measurements with each other to provide an on-line, accurate diagnosis of critical malfunctions has thus far proven to be a very challenging task, especially in the case of misfire.</div> <div class="htmlview paragraph">A typical automotive emission control system relies on the measurements provided by various sensors, including for example air charge temperature, intake manifold pressure, exhaust gas oxygen concentration, and engine speed, to adjust the air and fuel mixture as closely as possible to the stoichiometric air-to-fuel ratio (AFR). Maintaining the AFR close to stoichiometry allows the catalytic converter to operate in a high conversion efficiency region, and to significantly reduce the emission of the three major pollutants (for gasoline engines), that is, CO, HC, and NOx. Improper operation of any of the sensors, as well as actual component malfunctions (e.g., a fouled spark plug or fuel injector, or a vacuum or compression leak), may sufficiently upset the delicate balance sought by the electronic controller to cause the mixture to significantly deviate from the desired set point. Such a condition results not only in increased emissions, but possibly in further damage to components (e.g., the catalytic converter), with significant cost to the consumer or to the manufacturer.</div> <div class="htmlview paragraph">It is clearly important to diagnose malfunctions in the emission control system at the incipient stage. Since in practice the first visible “symptom” of a problem with the emission control system may be the measurement of excessive tailpipe emissions during an inspection and maintenance test, it is very important that the exhaust gas measurements be somehow correlated with the health of the emission control system. This is a particularly challenging problem, because the chemistry of exhaust gas production is very complex, and not easily modeled by conventional dynamic system modeling methods. One approach to understanding the correlation between emission control system malfunctions and measured tailpipe emissions is to generate an extensive data base, and to analyze the data to uncover characteristic patterns that may assist in the diagnosis of specific faults. The ultimate aim of the project is to provide a methodology for the development of diagnostic tools that can integrate the information supplied by conventional tailpipe inspection programs with on-board diagnostics to provide fast and reliable diagnosis of misfire.</div>
Helicon<b><i>m</i></b>= 0 mode characteristics in large-diameter plasma produced by a planar spiral antenna (1997)

Excited wave characteristics in a large-diameter plasma produced by a planar spiral antenna are investigated. Radial and axial profiles of the excited magnetic fields, a dispersion relation and observing regions of the excited magnetic fields are studied, for variations in the filling pressure and the static axial magnetic field; successful excitation of the propagating helicon wave with an azimuthal mode number of m = 0 is shown.
SHORT NOTICES (1969)

Journal Article SHORT NOTICES Get access Vetus Latina: Die Reste der altlateinischen Bibel, nach Petrus Sabatier neu gesammelt und herausgegeben von der Erzabtei Beuron. Band 24/2. Epistulae ad Philippenses et ad Colossenses: 3. Lieferung. Phil. 2. 15–4. 7. Pp. 80. Freiburg-im-Breisgau: Herder, 1968. DM. 23.50 (paper). GEOFFREY G. WILLIS GEOFFREY G. WILLIS Search for other works by this author on: Oxford Academic Google Scholar The Journal of Theological Studies, Volume XX, Issue 1, April 1969, Pages 376-c–377, https://doi.org/10.1093/jts/XX.1.376-c Published: 01 April 1969
Quantitative Boundary Support Characterization for Cantilever MEMS (2007)

Microfabrication limitations are of concern especially for suspended Micro-Electro-Mechanical-Systems (MEMS) microstructures such as cantilevers. The static anddynamic qualities of such microscale devices are directly related to the invariant and variantproperties of the microsystem. Among the invariant properties, microfabrication limitationscan be quantified only after the fabrication of the device through testing. However, MEMSare batch fabricated in large numbers where individual testing is neither possible nor costeffective. Hence, a suitable test algorithm needs to be developed where the test resultsobtained for a few devices can be applied to the whole fabrication batch, and also to thefoundry process in general. In this regard, this paper proposes a method to test MEMScantilevers under variant electro-thermal influences in order to quantify the effectiveboundary support condition obtained for a foundry process. A non-contact optical sensingapproach is employed for the dynamic testing. The Rayleigh-Ritz energy method usingboundary characteristic orthogonal polynomials is employed for the modeling andtheoretical analysis.
Molecular cloning and expression of the xylanase gene from Chainia in Escherichia coli (1992)

A complete genomic library of Chainia was constructed in coliphage λ vector gt10 and was screened for the xylanase gene using an 18-mer mixed oligonucleotide probe corresponding to a six-amino acid sequence of low molecular mass Chainia xylanase. Inserts from 11 putative clones, showing hybridization with the oligonucleotide probe at medium stringency, were subcloned in pUC8 and screened for xylanase gene expression using anti-xylanase antibodies. The restriction map of the insert (1.4 kb) from one of the four immunopositive clones (PVX8) showing detectable xyalanase activity was constructed. The xylanase activity of PVX8 was not induced by IPTG or xylan. Reorientation of the insert by directional cloning into pUC9 had no effect on the xylanase activity suggesting that an indigenous promoter from Chainia is responsible for the xylanase activity.
Silacupration of oxabicyclic compounds. An interrupted ring opening reaction (1992)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSilacupration of oxabicyclic compounds. An interrupted ring opening reactionMark Lautens, Randolph K. Belter, and Alan J. LoughCite this: J. Org. Chem. 1992, 57, 2, 422–424Publication Date (Print):January 1, 1992Publication History Published online1 May 2002Published inissue 1 January 1992https://pubs.acs.org/doi/10.1021/jo00028a003https://doi.org/10.1021/jo00028a003research-articleACS PublicationsRequest reuse permissionsArticle Views214Altmetric-Citations23LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Cellulosic ethanol production from AFEX-treated corn stover using <i>Saccharomyces cerevisiae</i> 424A(LNH-ST) (2009)

Current technology using corn stover (CS) as feedstock, Ammonia Fiber Expansion (AFEX) as the pretreatment technology, and Saccharomyces cerevisiae 424A(LNH-ST) as the ethanologenic strain in Separate Hydrolysis and Fermentation was able to achieve 191.5 g EtOH/kg untreated CS, at an ethanol concentration of 40.0 g/L (5.1 vol/vol%) without washing of pretreated biomass, detoxification, or nutrient supplementation. Enzymatic hydrolysis at high solids loading was identified as the primary bottleneck affecting overall ethanol yield and titer. Degradation compounds in AFEX-pretreated biomass were shown to increase metabolic yield and specific ethanol production while decreasing the cell biomass generation. Nutrients inherently present in CS and those resulting from biomass processing are sufficient to support microbial growth during fermentation. This platform offers the potential to improve the economics of cellulosic ethanol production by reducing the costs associated with raw materials, process water, and capital equipment.
Eye-Voice-Controlled Interface (1986)

The Ocular Attention-Sensing Interface System (OASIS) is an innovative human-computer interface which utilizes eye movement and voice commands to communicate messages between the operator and the system. This report initially describes some technical issues relevant to the development of such an interface. The results of preliminary experiments which evaluate alternative eye processing algorithms and feedback techniques are presented. Candidate interface applications are also discussed.
Reaction of Pyridinium and Quinolinium N-Imines with Ketenethioacetals (1984)

Reaction of 1-aminopyridinium and 1-aminoquinolinium mesitylene-sulfonates with ketenethioacetals [bis(methylthio)methylenemalonate (2a), 2, 2-bis(methylthio)-1-nitroethylene (8), and 2, 2-bis(methylthio)-2-sulfonylethylenes (10a, b)] gave N-substituted (1-pyridinio)amides (3a-d), (1-quinolinio)amide (5), pyrazolo[1, 5-α]pyridines (9a-f, 11a-g) and pyrazolo[1, 5-α]quinolines (12a-d) in good yield. 1-Aminoquinolinium mesitylene-sulfonate also reacted with 1, 2-dicyano-2-methylthio-1-(phenylsulfonyl)-ethylene (13) to give 2, 3-dicyanopyrazolo[1, 5-α]quinoline (14) in good yield.
TCP Flow Classification and Bandwidth Aggregation in Optically Interconnected Data Center Networks (2016)

Optical functionality is being used to realize new data center architectures that minimize electronic switching overheads, pushing the processing to the edge of the network. A challenge in optically interconnected data center networks is to identify the large, bandwidth-hungry flows (i.e., elephants) and efficiently establish the optical circuits. Moreover, the amount of optical resources to be provisioned during the network planning phase is a critical design problem. Flow classification accuracy affects the efficiency of optical circuits. Optical channel bandwidth, on the other hand, directly relates to the additive-increase, multiplicative-decrease congestion control mechanism of the transmission control protocol and affects the effective bandwidth allocated to elephant flows. In this paper, we simultaneously investigate the impact of two important mechanisms on data center network performance: traffic flow classification accuracy and optical bandwidth aggregation (i.e., the consolidation of several low-capacity channels into a single high-capacity one by employing advanced modulation formats for short-reach communications). We develop a discrete-event simulator for a hybrid data center network, enabling the tuning of flow classification parameters. Our simulations indicate that data center performance is highly sensitive to the aggregation level. We could observe up to a 74.5% improvement in network throughput only due to consolidating the optical channel bandwidth. We further noticed that the role of flow classification becomes more pronounced with higher bandwidth per wavelength as well as with more hot-spot traffic. Compared to a random classification benchmark, adaptive flow classification could lead to throughput improvements as large as 54.7%.
Enhanced Recognition and Neutralization of HIV-1 by Antibody-Derived CCR5-Mimetic Peptide Variants (2012)

A tyrosine-sulfated CCR5-mimetic peptide, CCR5mim1, inhibits HIV-1 infection more efficiently than sulfopeptides based on the CCR5 amino terminus. Here we characterized sulfopeptide chimeras of CCR5mim1 and the heavy-chain CDR3 of the antibody PG16. Two chimeras bound a range of envelope glycoproteins and neutralized HIV-1 more efficiently than CCR5mim1. An immunoadhesin form of one of these, CCR5mim2-Ig, synergized with CD4-Ig to neutralize HIV-1. These sulfopeptides are among the broadest and most potent CCR5-mimetic peptides described to date.
No Child Left Unharmed: The Image of the Child in The Hunger Games (2014)

This project seeks to examine the role of the child presented in The Hunger Games by comparing the image of the child to that of the adult, both in the individual districts and in the utopian city of the Capital. By using the contrasting images, I aim to show how imagery is used to draw on the significance of the misplaced roles. Director Gary Ross uses opposing color themes to show stark differences between the Capital and the districts. However, I feel that a further argument can be made in the way that the children and adults are expressed on screen. The image of the child is important to look at in this film, because of how the Capital uses children—both their image on screen and by tools within this society—to manipulate the power within the dystopian city of Panem.
Testing of a multi-kWe SOFC power generation system (1992)

In the last ten years, SOFC generated power has increased from tens of watts from 3 cell stacks to tens of kilowatts from 576 cell stacks. Following this growth in power capability, automatic control systems have been developed which permit unattended operation of these generators. This paper describes a 20 kWe SOFC generator system which was developed under joint sponsorship by Westinghouse and the US Department of Energy and has successfully completed 3,000 hours of operation. Reference 1 presents a description of the design features of this generator as well as the development work which proceeded its construction. The operation of this SOFC generator required continuous control of electrical load, fuel and air flows, and generator temperature. Because of the complex strategy required to control these parameters, a dedicated programmable controller operated the generator. Distinct operating states were defined for start up, stop, and run conditions. During the start up, the operator moved the generator through the operating states by keyboard input from a personal computer operator interface. An indicator on the display screen of the operator interface alerted the operator when a state transition was permissible. In the run state, keyboard input of certain control set points were permitted. The controller continuously monitored the status of critical parameters.
Heterogeneous nucleation in the crystallization of polyolefins. III. Theory and mechansim (1973)

Abstract The nucleating activity of a large number of nucleating agents for the crystallization of polyolefins is not based on a high surface free energy of the substrate or on epitaxy, or on a minimum particle size just compatible with the thickness of the crystallizing polymer lamellae, or on any persistance of crystalline material in holes of the nucleating particles. The relevant mechanism is thought to be nucleation at steps of limited length in the surface of the nucleating particles. The nucleation is enhanced by a high degree of accommodation of polymer molecules at the surface of the substrate through the presence of ditches in the latter which cause prealignment of polymer chains and thus facilitate crystallization.