gebhart/patrepeval huggingface dataset:
A continuous-time /spl Sigma//spl Delta/ ADC with increased immunity to interferers (2004)

Receivers are being digitized in a quest for flexibility. Analog filters and programmable gain stages are being exchanged for digital processing at the price of a very challenging ADC. This paper presents an alternative solution where the filter and programmable gain functionality is integrated into a /spl Sigma//spl Delta/ ADC. The novel filtering ADC is realized by adding a high-pass feedback path to a conventional /spl Sigma//spl Delta/ ADC while a compensating low-pass filter in the forward path maintains stability. As such, the ADC becomes highly immune to interferers even if they exceed the maximum allowable input level for the wanted channel. As a consequence, the ADC input range can be programmed dynamically to the level of the wanted signal only. This results in an input-referred dynamic range of 89 dB in 1-MHz bandwidth and an intentionally moderate output signal-to-noise-and-distortion ratio of 46-59 dB (depending on the programmed gain). The merged functionality enables a better overall power/performance balance for the receiver baseband. The design consumes less than 2 mW and active area is 0.14 mm/sup 2/ in a 0.18-/spl mu/m digital CMOS technology.
Cycloaddition reactions of divinylbenzenes (1991)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCycloaddition reactions of divinylbenzenesAnne Buyle Padias, Tse Pei Tien, and H. K. Hall Jr.Cite this: J. Org. Chem. 1991, 56, 19, 5540–5544Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Published inissue 1 September 1991https://pubs.acs.org/doi/10.1021/jo00019a013https://doi.org/10.1021/jo00019a013research-articleACS PublicationsRequest reuse permissionsArticle Views252Altmetric-Citations6LEARN 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
Photoemission analysis of chemically modified TlBr surfaces for improved radiation detectors (2013)

Device-grade TlBr was subjected to various chemical treatments used in room temperature radiation detector fabrication to determine the resulting surface composition and electronic structure. Samples of as polished TlBr were treated separately with 2%Br:MeOH, 10%HF, 10%HCl and 96%SOCl<sub>2</sub> solutions. High-resolution photoemission measurements on the valence band electronic structure and Tl 4f, Br 3d, Cl 2p and S 2p core lines were used to evaluate surface chemistry. Results suggest anion substitution at the surface with subsequent shallow heterojunction formation. Surface chemistry and valence band electronic structure were further correlated with the goal of optimizing the long-term stability and radiation response.
Metastable Demixing of Supercooled Cu-Co and Cu-Fe Alloys in an Oxide Flux (1998)

A systematic study on the liquid separation in supercooled Cu-Co and Cu-Fe alloys was performed using a melt fluxing which permits high supercooling to be achieved. Moreover, this method renders it possible to directly measure binodal temperatures and establish metastable liquid miscibility gap (LMG). All phase-separated samples at compositions ranging from 10 to 80 wt pct Co or to 83 wt pct Fe were found to exhibit droplet-shaped morphologies, in spite of various droplet distributions. Uniformly dispersed microstructures were obtained as the minority component was less than 20 vol.%; while beyond this percentage, serious coarsening was brought about. Calculations of the miscibility gap in the Cu-Co system and Stokes movement velocity of Co and Fe droplets in Cu matrix were made to analyze the experimental results.
Improvement of popliteal angle with semitendinosus or gastrocnemius tenotomies in children with cerebral palsy (2015)

Semitendinosus and gastrocnemius tenotomies improved popliteal angle by 30.1% and 12%, respectively. Age, preoperative popliteal angle or anatomical disease classification did not a significantly affect popliteal angle.
Micro-machined dual slider-suspension for near-contact and contact recording (1999)

This paper presents novel dual stage slider-suspension designs for near-contact/contact recording and discusses a few key issues of micro-suspension based head-disk interface. The work is aimed to provide a reliable mechanical interface for 5-15 nm head-disk spacing and to support 30-40 Gb/in2 areal densities.
<title>UWGSP8: a programmable ultrasound subsystem for native image processing</title> (1996)

Tremendous computational capabilities are required in modern ultrasound machines. Unique and very high data throughput rates combined with the demanding processing requirement have restricted the designs of such ultrasound machines to algorithm-specific hardware with limited programmability. Specialized electronic boards are dedicated to each of the several subsystems such as gray scale, color flow, and Doppler processing. In many cases, improving the functionality of an ultrasound machine requires hardware redesigns and replacements of boards or of the entire machine. These redesigns and replacements generally require significant expenditures in manpower, time, and cost, thus imposing stringent limits on the types of image processing which can be supported. In an effort to address these problems, we have architected and designed a high-performance programmable ultrasound processing subsystem, the UWGSP8, to fit within an existing ultrasound machine and support native ultrasound image processing. Its flexible design means that it can support a much wider range of ultrasound image processing algorithms than can be realized in any conventional fixed hardware design.
Visual Inspection Research Project Report on Benchmark Inspections (2017)

Word document. Recognizing the importance of visual inspection in the maintenance of the civil air fleet, the FAA tasked the Aging Aircraft Nondestructive Inspection Validation Center (AANC) at Sandia National Labs in Albuquerque, NM, to establish a visual inspection reliability program. This report presents the results of the first phase of that program, a benchmark visual inspection reliability experiment. The benchmark experiment had 12 airline inspectors perform specific inspection tasks on AANC's Boeing 737 in order to estimate overall performance characteristics of a typical set of inspectors on a typical set visual inspection tasks. The report also includes a separate but related probability of detection study on small but visible cracks at rivet locations on fabricated fuselage skin splices. Conclusions are drawn with respect to quantification of inspection reliability, search and decision aspects of visual inspection, use of job cards during inspection, and inspector specific factors affecting visual inspection performance.
Localized routing trees for query processing in sensor networks (2005)

In this paper, we propose a novel energy-efficient approach, a localized routing tree (LRT) coupled with a route redirection (RR) strategy, to support various types of queries. LRTs take care of the sensors near the sink and reduce the energy consumption of these sensors, and RR reduces the energy cost of data receptions. Compared to the existing approaches, simulation studies show that LRT together with RR has significant improvement on the query capacity.
ChemInform Abstract: Cerous Potassium Nitrate, K3Ce2(NO3)9. (1995)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Robot Soccer using Optical Analog VLSI Sensors (2004)

In this paper we show how a combination of low dimensional vision sensors can be used to aid the higher level visual processing task of colour blob tracking, carried out by a conventional vision system. The processing elements are neuromorphic analog VLSI (aVLSI) vision sensors capable of computing motion and estimating the spatial position of high-contrast moving targets. In these devices both sensing and processing is done on the chip's focal plane. The neuromorphic sensors can calculate optical flow, position of sharpest edge, and motion of sharpest edge, in real-time. The processing capability of the system is investigated in a mobile robotics application. Firstly, for visualization and evaluation purposes, a correlation analysis is performed between the data collected from the neuromorphic vision sensors and the standard vision system of the autonomous robot, then, we process the multiple neuromorphic sensory signals with a standard auto-regression method in order to achieve a higher level vision processing task at a much higher update rate. At the end we argue why this result is of great relevance for the application domain of reactive and lightweight mobile robotics, at the hands of a soccer robot, where the fastest sensory-motor feedback loop is imperative for a successful participation in a RoboCup soccer competition.
High resolution nonlinear microscopy: A review of sources and methods for achieving optimal imaging (2001)

This article reviews the latest instrumentation used in high resolution nonlinear microscopy and techniques for the temporal and spatial calibration of this instrumentation. This includes an overview of currently available ultrashort laser sources, the dispersion characteristics of microscopes, methods for pulse measurement at high numerical aperture, dispersion compensation techniques, and finally a brief overview of a number of nonlinear imaging methods presently used in these systems.
Regaining Lost Cycles with HotCalls (2017)

Intel's SGX secure execution technology allows running computations on secret data using untrusted servers. While recent work showed how to port applications and large-scale computations to run under SGX, the performance implications of using the technology remains an open question. We present the first comprehensive quantitative study to evaluate the performance of SGX. We show that straightforward use of SGX library primitives for calling functions add between 8,200 - 17,000 cycles overhead, compared to 150 cycles of a typical system call. We quantify the performance impact of these library calls and show that in applications with high system calls frequency, such as memcached, openVPN, and lighttpd, which all have high bandwidth network requirements, the performance degradation may be as high as 79%. We investigate the sources of this performance degradation by leveraging a new set of microbenchmarks for SGX-specific operations such as enclave entry-calls and out-calls, and encrypted memory I/O accesses. We leverage the insights we gain from these analyses to design a new SGX interface framework HotCalls. HotCalls are based on a synchronization spin-lock mechanism and provide a 13-27x speedup over the default interface. It can easily be integrated into existing code, making it a practical solution. Compared to a baseline SGX implementation of memcached, openVPN, and lighttpd - we show that using the new interface boosts the throughput by 2.6-3.7x, and reduces application latency by 62-74%.
DYNAMICS OF ENZYME-INDUCED DNA BENDING (2006)

We theoretically study the role of enzyme-induced bending in DNA-cleavage processes. In our model the enzyme bends DNA at its adsorption site leading to stress propagation along the filaments. Since this process is slow the time-dependent DNA-shape can be calculated in a quasistatic approximation. This allows to determine the range of parameters for which strong DNA bending occurs. For enzymes which cut by bending only the cleavage rate is found to depend crucially on the viscosity of the surrounding fluid and the length of the cut DNA segment.
Improved Solar Still Process for Desalting Sea and Brackish Waters (1960)

This article discusses several new design features that have been investigated to improve the yield of existing solar stills. One of the improvements is the mechanical separation of the collector‐evaporator unit from the condenser. A further improvement is the use of air as an intermediate substance that substitutes forced convection for natural convection to increase evaporation. In addition, this design utilizes droplet evaporation in lieu of flat‐sheet evaporation to increase the interfacial area between carrier and water droplet. Another important feature of the new design is the reuse of energy in an external heat exchanger to preheat the incoming seawater while the condensate is extracted from the saturated vapor. The cooled and dewatered air can be recycled to the still. The paper discusses an experimental plant that was located on the roof of the Chemistry Annex Building on the Georgia Institute of Technology campus, Atlanta, Georgia. Collection of preliminary data was begun in March 1959. The equipment was tested and improved until May 19, when reliable data collection was started and carried through until the end of September 1959. Four experimental stills of different designs, each 9 sq ft in cross‐sectional area, with plastic film canopies, were evaluated. The paper discusses the main characteristics of the four experimental designs, along with the experimental procedure including deep basin (natural convection), and shallow basin (glass and forced convection).
Microwave Dielectric Ceramics for Resonators and Filters in Mobile Phone Networks (2006)

Temperature‐stable, medium‐permittivity dielectric ceramics have been used as resonators in filters for microwave (MW) communications for several decades. The growth of the mobile phone market in the 1990s led to extensive research and development in this area. The main driving forces were the greater utilization of available bandwidth, that necessitates extremely low dielectric loss (high‐quality factor), an increase in permittivity so that smaller components could be fabricated, and, as ever in the commercial world, cost reduction. Over the last decade, a clear picture has emerged of the principal factors, that influence MW properties. This article reviews these basic principles and gives examples of where they have been used to control microwave properties and ultimately develop new materials.
Space requirements of finishing pigs fed to an average pen weight of 250 pounds (1989)

Space allowances of 6, 8, 10, and 12 ft^2 were evaluated for pigs fed from 130 lb to a pen average of 250 lb. Average daily gain and average daily feed intake. increased linearly (P<.05) as space allowance increased. However, those pigs permitted 10 or 12 ft^2 of space were similar in avg daily gain, avg daily feed intake, and feed efficiency, suggesting that 10 ft^2 of space is adequate for feeding finishing hogs to a heavier average pen weight. Coefficients of variation (CV) for initial weight and final weight were increased for pigs with 6 ft^2, whereas for those exposed to 10 and 12 ft^2, the CV was reduced, indicating more uniform pigs at final weight with greater space allowance.; Swine Day, Manhattan, KS, November 16, 1989
Neurologic Sequelae Following Interferon Therapy of Juvenile Laryngeal Papilloma (1988)

Human leukocyte interferon at doses from 2 million units every two days to 3 million units daily was given to a 2-year-old boy for the treatment of recurrent juvenile laryngeal papilloma. After 7 months of treatment the child developed spastic diplegia, which persisted despite the discontinuation of interferon therapy. The clinical picture was consistent with an upper motor neuron lesion; no evidence of peripheral neuropathy was found.
Four-wave-mixing based wavelength conversion in a tapered fiber coated with carbon nanotubes/polymer composite (2011)

We demonstrate a nonlinear optical device based on a fiber taper coated with a carbon nanotube/polymer composite. Four wave mixing-based wavelength conversion of 10 Gb/s Non-return-to-zero signal with the coated fiber-taper nonlinear device is achieved. Wavelength tuning is also investigated.
Distributed simulation of parallel executions (2002)

We propose a new practical technique for the distributed execution-driven simulation of parallel computers. Our simulation methodology allows complete verbalization of the design at all levels and achieves good performance by preserving and exploiting the parallelism of the parallel program being simulated. With our technique it is possible to decouple the simulation of the execution of a parallel application from the estimation of the virtual execution time in which such execution is carried out. Our technique uses minimal overhead to maintain coherent distributed event causality relations by making it possible for the simulated executions to reflect the intrinsic uncertainties of parallel applications being simulated. We include a detailed description of our methodology, explain how to apply our ideas to parallelize an existing execution-driven sequential simulator under quite general assumptions, discuss the trade-offs of our methodology, and give preliminary performance measurements of a distributed simulator that uses our technique.
Genetic mapping and developmental timing of transmission ratio distortion in a mouse interspecific backcross (2010)

Given that Mendelian ratios of inheritance are observed for Chr 7, 10 and 11 during development and at birth, the underlying causes for the interspecific TRD events are the differential post-natal survival of pups with specific genotypes. These results are consistent with the TRD mechanism being deviation from Mendelian inheritance rather than meiotic drive or segregation distortion.
Läsionsmapping bei Patienten mit Thalamusschmerzen (2009)

Zentrale Schmerzen nach Thalamusinfarkt stellen eines der refraktärsten Schmerzsyndrome mit erheblicher Beeinträchtigung der Lebensqualität dar. Die Pathogenese ist bislang jedoch noch wenig untersucht und verstanden. Von manchen Autoren wird eine Schlüsselrolle des Nucleus ventralis posterior (VP) betont, während Andere Läsionen des posterioren Anteils des Nucleus ventralis medialis (VMpo) für entscheidend halten. Zudem sind keine Prädiktoren für die Entwicklung von Thalamusschmerzen etabliert.
Studies on the Self-Incompatibility Response of Lilium longiflorum (1976)

Removal of substances loosely associated with the wall of Lilium longiflorum pollen did not affect in vitro germination and tube growth, tube growth within compatible styles, or production of viable seeds. Nor was growth of pollen tubes within incompatible styles enhanced by prior removal of the loosely bound materials. Hence, these materials appear not to be recognition factors in the gametophytic self-incompatibility system of Lilium and to have no role in pollen germination. Heat treatment of selected portions of lily pistils prior to pollination indicated that the incompatibility factor(s) was located in the lower half of the style, and that the stigma plays no role in incompatibility.
Synthesis of poly[4(5)‐vinylimidazole‐co‐γ‐vinyl‐γ‐butyro‐lactone] and its catalytic activity in ester hydrolysis (1974)

Abstract Copolymerizations of 4(5)‐vinylimidazole ( 1 ) and γ‐vinyl‐γ‐butyrolactone ( 2 ) initiated by 2,2′‐azoisobutyronitrile or benzoyl peroxide were carried out. The initiators did not affect the radical reactivity ratio ( r ). In addition, the reactivity ratio was not influenced by methanol as solvent. The following ratios were obtained r 1 = 20,0 ± 0,8 and r 2 = 0,030 ± 0,002. The catalytic activity of the copolymers in the hydrolyses of p ‐nitrophenyl acetate ( 4 ) and 3‐acetoxy‐ N,N,N ‐trimethylanilinium iodide ( 5 ) at pH = 8,0 was found to be more than twice as high as that of a random terpolymer containing imidazole, carboxylic acid, and hydroxy moieties.
Influence of electrostatic interactions on fibre/fibre joint and paper strength (2004)

A study was undertaken to explore the influence of electrostatic interactions between the fibres during sheet forming and sheet consolidation on the strength of both the fibre/fibre joints and the paper. To establish this relationship, the joint strength between individual fibres was determined and compared with the strength of sheets made from these corresponding fibres. Regenerated cellulose fibres with their charge varied by carboxymethylation (anionic fibres) and by treatment with glycidyltrimethylamoniumchloride (GTAC) (cationic fibres) were investigated. In addition to joint strength and sheet strength measurements, the fibre charge together with wet fibre flexibility and fibre swelling, were evaluated for the differently treated fibres.The joint strength between individual fibres decreased with increasing ionic strength whereas the sheet strength measurements showed an increase in strength with increasing ionic strength for the bulk charged fibres. These results were found for both anionic and cationic bulk charged fibres. The wet flexibility of the fibres increased with increasing bulk charge, but there was no change in flexibility with an increase in salt concentration. Furthermore, there was no change in flexibility by increasing the surface charge of the fibres. It is suggested that the increase in sheet strength with increasing charge of the fibre is due to increasing joint strength and that the decrease in joint strength with increasing salt concentration is due to a decrease in the surface swelling of the fibres and hence a less favourable interaction between the fibres.The increase in sheet strength for the bulk charged fibres with increasing salt concentration is probably caused by an increased probability for joint formation in the fibre/fibre contacts due to decreased electrostatic repulsion between the fibres. This is discussed in terms of a balance between electrostatic repulsion and attractive capillary forces between the fibres during forming and consolidation of the paper.
Tγδ CELLS AND THEIR SUBSETS IN BLOOD AND SYNOVIAL FLUID FROM PATIENTS WITH RHEUMATOID ARTHRITIS (1992)

We have determined the distribution of T gamma delta cells in the peripheral blood of 44 patients with rheumatoid arthritis and in 36 healthy controls. In addition, paired blood and synovial fluid samples were obtained from seven patients with RA. The monoclonal antibodies A13, BB3 and Ti gamma A, which are specific for the V delta 1, V delta 2 and V gamma 9 gene products respectively, were used to define T gamma delta subsets. T gamma delta + cells expressed as a percentage of CD3+ lymphocytes were reduced in RA peripheral blood compared with the control group (3.9% +/- 0.5 versus 5.7% +/- 0.7; P less than 0.0001). There was a reduction in the V gamma 9/V delta 2+ subset (from 5.6% +/- 1.2 to 1.7% +/- 0.4) leading to a change in the mean ratio of V delta 2/V delta 1+ cells from 4.3 in normal subjects to 1.1 (P less than 0.002). No statistical difference was observed in T gamma delta cell numbers in synovial fluid compared with the paired blood samples (4.0% +/- 1.1 in blood and 4.4% +/- 1.4 in synovial fluid). Also the distribution of V delta 2+ and V delta 1+ cells was similar in the two compartments and a similar alteration in subset distribution was found in blood and synovial fluid. These findings do not indicate a selective accumulation of a specific T gamma delta subset in RA synovial effusions.