Relevant bibliographies by topics / Compacts arrays

Academic literature on the topic 'Compacts arrays'

Author: Grafiati
Published: 7 July 2024

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Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Journal articles on the topic "Compacts arrays":

1

Shi, J. L. "Relations Between Coarsening and Densification and Mass Transport Path in Solid-state Sintering of Ceramics: Model Analysis." Journal of Materials Research 14, no. 4 (April 1999): 1378–88. http://dx.doi.org/10.1557/jmr.1999.0188.

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The correlations between coarsening (including grain and pore growth) and densification, and the effects of mass transport on particle coarsening and densification were discussed based on the simple particle array models and for the real particle compacts. Grain boundary motion could cause particle coarsening only under a certain particle size distribution but not densification; mass transport is reasoned to contribute to both grain growth (particle coarsening) and shrinkage for one-dimensional particle arrays. Under a certain limitation for the change of the particle size aspect ratio during sintering, very limited effects of grain grown by itself on the shrinkage of particle a rrays throughreinitiating the sintering could be found. For a real powder compact system, mass transport between the particles, which surround a pore, contributes to the particle coarsening and densification when the pore is thermodynamically unstable and only to particle coarsening when the pore is thermodynamically stable. The mass transport mechanism for both particle coarsening and densification would be the same, which cannot exclude, at least on thermodynamics, the contribution from surface diffusion in the intermediate stage of sintering.
2

Li, Jing Feng, Song Zhe Jin, and Yong Li. "Fabrication of Si3N4 Micro-Components by a Combined Microfabrication Process." Key Engineering Materials 287 (June 2005): 28–32. http://dx.doi.org/10.4028/www.scientific.net/kem.287.28.

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Si-based high-temperature ceramics are attractive materials for power microelectromechanical systems (power MEMS), such as microscale gas turbines, micro-combustors and micro-reactors. This presentation introduces a novel process for the microfabrication of Si3N4 ceramics, which mainly consists of pre-sintering of Si powder compacts, micromachining of pre-sintered Si preforms and reaction sintering of the micromachined Si preforms. The present process has its high potential for Si3N4 3-dimensional microfabrication because it combines the machinablity of pre-sintered Si powder compacts and near-net shaping characteristic of S3N4 reaction sintering. Si3N4 micro-components such as micro nozzle arrays and micro-rotor were fabricated by using the present process.
3

Llères, David, John James, Sam Swift, David G. Norman, and Angus I. Lamond. "Quantitative analysis of chromatin compaction in living cells using FLIM–FRET." Journal of Cell Biology 187, no. 4 (November 16, 2009): 481–96. http://dx.doi.org/10.1083/jcb.200907029.

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We present a quantitative Förster resonance energy transfer (FRET)–based assay using multiphoton fluorescence lifetime imaging microscopy (FLIM) to measure chromatin compaction at the scale of nucleosomal arrays in live cells. The assay uses a human cell line coexpressing histone H2B tagged to either enhanced green fluorescent protein (FP) or mCherry FPs (HeLaH2B-2FP). FRET occurs between FP-tagged histones on separate nucleosomes and is increased when chromatin compacts. Interphase cells consistently show three populations of chromatin with low, medium, or high FRET efficiency, reflecting spatially distinct regions with different levels of chromatin compaction. Treatment with inhibitors that either increase chromatin compaction (i.e., depletion of adenosine triphosphate) or decrease chromosome compaction (trichostatin A) results in a parallel increase or decrease in the FLIM–FRET signal. In mitosis, the assay showed variation in compaction level, as reflected by different FRET efficiency populations, throughout the length of all chromosomes, increasing to a maximum in late anaphase. These data are consistent with extensive higher order folding of chromatin fibers taking place during anaphase.
4

Sun, Dajun, Jie Ding, Cuie Zheng, and Weimin Huang. "Array geometry calibration for underwater compact arrays." Applied Acoustics 145 (February 2019): 374–84. http://dx.doi.org/10.1016/j.apacoust.2018.10.004.

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Leicher, Rachel, Eva J. Ge, Xingcheng Lin, Matthew J. Reynolds, Wenjun Xie, Thomas Walz, Bin Zhang, Tom W. Muir, and Shixin Liu. "Single-molecule and in silico dissection of the interaction between Polycomb repressive complex 2 and chromatin." Proceedings of the National Academy of Sciences 117, no. 48 (November 18, 2020): 30465–75. http://dx.doi.org/10.1073/pnas.2003395117.

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Polycomb repressive complex 2 (PRC2) installs and spreads repressive histone methylation marks on eukaryotic chromosomes. Because of the key roles that PRC2 plays in development and disease, how this epigenetic machinery interacts with DNA and nucleosomes is of major interest. Nonetheless, the mechanism by which PRC2 engages with native-like chromatin remains incompletely understood. In this work, we employ single-molecule force spectroscopy and molecular dynamics simulations to dissect the behavior of PRC2 on polynucleosome arrays. Our results reveal an unexpectedly diverse repertoire of PRC2 binding configurations on chromatin. Besides reproducing known binding modes in which PRC2 interacts with bare DNA, mononucleosomes, and adjacent nucleosome pairs, our data also provide direct evidence that PRC2 can bridge pairs of distal nucleosomes. In particular, the “1–3” bridging mode, in which PRC2 engages two nucleosomes separated by one spacer nucleosome, is a preferred low-energy configuration. Moreover, we show that the distribution and stability of different PRC2–chromatin interaction modes are modulated by accessory subunits, oncogenic histone mutations, and the methylation state of chromatin. Overall, these findings have implications for the mechanism by which PRC2 spreads histone modifications and compacts chromatin. The experimental and computational platforms developed here provide a framework for understanding the molecular basis of epigenetic maintenance mediated by Polycomb-group proteins.
6

Velarde Martinez, Apolinar. "Scheduling in Heterogeneous Distributed Computing Systems Based on Internal Structure of Parallel Tasks Graphs with Meta-Heuristics." Applied Sciences 10, no. 18 (September 22, 2020): 6611. http://dx.doi.org/10.3390/app10186611.

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The problem of scheduling parallel tasks graphs (PTGs) represented by directed acyclic graphs (DAGs) in heterogeneous distributed computing systems (HDCSs) is considered an nondeterministic polynomial time (NP) problem due to the diversity of characteristics and parameters, generally opposed, intended to be optimized. The PTGs are scheduled by a scheduler that determines the best location for the sub-tasks that constitute the PTGs and is responsible for allocating the resources of the HDCS to the sub-tasks of the PTGs. To optimize scheduling and allocations, the scheduler extracts characteristics from the internal structure of the PTGs. The prevailing characteristic in existing research is the critical path (CP), which is limited to providing execution paths of PTGs; considering this limitation, we extend the array method proposed in Velarde, which extracts two additional characteristics to the CP: the layering and the density of the graph for scheduling. These characteristics are represented as integer values of the PTGs to be scheduled; the values obtained from the characteristics are stored in arrays representing populations that are evaluated with the heuristic univariate marginal distribution algorithm (UMDA) and in terms of comparison with the genetic algorithm. With the best allocations produced by the algorithms, two performance parameters are evaluated: makespan and waiting time. The results indicate that when more PTGs characteristics are considered, resource allocations are optimized, and scheduling times are reduced. The results obtained with the heuristic algorithms show that UMDA provides shorter scheduling and allocation times compared with the genetic algorithm; UMDA widely distributes the sub-tasks in the clusters, whereas the genetic algorithm compacts the assignments of the PTGs in the clusters with a longer convergence time that translates into longer scheduling and allocation times. Extensive explanations of these conclusions are provided in this work, based on the conducted experiments.
7

Fontana, P. M., and T. ‐A Haugland. "Compact sleeve‐gun source arrays." GEOPHYSICS 56, no. 3 (March 1991): 402–7. http://dx.doi.org/10.1190/1.1443058.

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Data derived from far‐field signature measurements have inspired several guidelines for using clustered sleeve guns effectively in tuned marine seismic source arrays. Primarily, these data show that for a given volume the signature produced by a cluster of sleeve guns has a comparable bubble period, increased primary amplitude, and reduced bubble‐pulse amplitude compared to the signature of a single gun. These results agree with those reported for clusters of conventional air guns. However, when the data are analyzed in terms of acoustic and operational efficiency, we find that for array elements with volumes greater than [Formula: see text] two‐gun clusters are more desirable than equivalent volume clusters of several small volume guns. For array elements with volumes up to [Formula: see text], the data show no significant advantages for using clusters instead of single guns. These guidelines have led to the design of sleeve‐gun arrays that produce signatures with temporal and spectral characteristics equal to or exceeding those produced by conventional air‐gun arrays incorporating almost twice the total gun volume. Moreover, these new arrays operate with a total number of individual guns comparable to conventional arrays, thus improving the performance of source arrays on small survey vessels without having to increase air compressor capacity or ancillary source equipment.
8

Taylor, Jacob, Nolan Denman, Kevin Bandura, Philippe Berger, Kiyoshi Masui, Andre Renard, Ian Tretyakov, and Keith Vanderlinde. "Spectral Kurtosis-Based RFI Mitigation for CHIME." Journal of Astronomical Instrumentation 08, no. 01 (March 2019): 1940004. http://dx.doi.org/10.1142/s225117171940004x.

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We present the implementation of a spectral kurtosis-based Radio-Frequency Interference detection system on the CHIME instrument and its reduced-scale pathfinder. Our implementation extends single-receiver formulations to the case of a compact array, combining samples from multiple receivers to improve the confidence with which RFI is detected. Through comparison between on-sky data and simulations, we show that the statistical properties of the canonical spectral kurtosis estimator are functionally unchanged by cross-array integration. Moreover, by comparison of simultaneous data from CHIME and the Pathfinder, we evaluate our implementation’s capacity for interference discrimination for compact arrays of various sizes. We conclude that a spectral kurtosis-based implementation provides a scalable, high cadence RFI discriminator for compact multi-receiver arrays.
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KETO, ERIC. "HIERARCHICAL CONFIGURATIONS FOR CROSS-CORRELATION INTERFEROMETERS WITH MANY ELEMENTS." Journal of Astronomical Instrumentation 01, no. 01 (November 5, 2012): 1250007. http://dx.doi.org/10.1142/s2251171712500079.

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Array configurations built on a hierarchy of simple elements have excellent properties for cross-correlation imaging interferometers including a smooth distribution of measured Fourier components, high angular resolution, low side lobes, and compact array size. Compared to arrays with a Gaussian distribution of antenna separations, hierarchical arrays (H-arrays) produce beams with higher angular resolution and a tighter concentration of the total power (encircled energy) within a smaller area around the main beam. An attractive feature of H-arrays is their simplicity. The relationships between the Fourier coverage and the array configuration are easy enough to understand that they can be adjusted to achieve different design goals without the need for numerical optimization. H-arrays will be useful for future multi-element interferometers.
10

Guohua Hu, Guohua Hu, Zhipeng Qi Zhipeng Qi, Binfeng Yun Binfeng Yun, Ruohu Zhang Ruohu Zhang, and and Yiping Cui and Yiping Cui. "Compact, integrated PLZT optical switch array." Chinese Optics Letters 13, no. 11 (2015): 111301–4. http://dx.doi.org/10.3788/col201513.111301.

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You might also be interested in the extended bibliographies on the topic 'Compacts arrays' for particular source types:
Journal articles Dissertations / Theses Books

Dissertations / Theses on the topic "Compacts arrays":

1

Touhami, Abdellah. "Optimisation multi-objectif d'antennes superdirectives compactes à balayage de faisceau pour des passerelles domestiques 5G sans fil." Electronic Thesis or Diss., Université de Rennes (2023-....), 2024. http://www.theses.fr/2024URENS002.

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L’évolution des standards de communication impose le besoin des architectures antennaires plus sophistiqués associés à des techniques de diversité d’antennes et de formation de faisceaux. Ce type d’antennes offre des nouvelles possibilités pour les applications sans fil en termes d’efficacité spectrale, de fiabilité des liens radio, de réduction de l’impact environnementale ainsi que l’accroissement des capacités des systèmes de communications. Cependant, les techniques conventionnelles de formation de faisceaux entraînent souvent une augmentation significative de la taille de l’antenne. Par conséquent, l’intégration de tel système dans des petits appareils sans fil est relativement limitée. Les réseaux d’antennes compactes et superdirectifs constituent une solution innovante et attrayante pour surmonter ces problèmes. Néanmoins, ils présentent nombreux inconvénients notamment une faible efficacité de rayonnement, un très faible gain et une bande passante très étroite. Ces inconvénients limitent l'utilité des réseaux superdirectifs pour répondre aux besoins des technologies sans fil de nouvelles générations. Dans cette thèse, nous proposons de nouvelles méthodes d’optimisation multi-objectif, basées sur la théorie des modes caractéristiques (NCM), la théorie du facteur de réseau ainsi que les réseaux de neurones artificiels (RNA) pour la conception et le développement de nouvelles architectures antennaires compactes, superdirectives, efficaces et large bande pour des applications 5G
The evolution of wireless communication impose the need for more sophisticated antenna architectures, combined with antenna diversity and beamforming techniques. This type of antenna offers new possibilities for wireless applications in terms of spectral efficiency, radio link reliability, reduced environmental impact and increased communications system capacity. However, conventional beamforming techniques often lead to a significant increase in antenna size. As a result, the integration of such systems into small wireless devices is relatively limited. Compact, superdirective antenna arrays offer an innovative and attractive solution for both beamforming needs and integration in small volumes. However, they exhibits multiple drawbacks, including low radiation efficiency, low gain and narrow bandwidth. These drawbacks limit the usefulness of superdirective arrays to meet the needs of new-generation wireless technologies. In this thesis, we propose new multi-objectives optimization methods, based on network characteristic mode theory (NCM), array factor theory as well as artificial neural networks (ANN), for the design and the development of new compact, superdirective, efficient and wideband antenna architectures for 5G applications
2

Yong, Su-Khiong. "Compact antenna arrays for mobile communications." Thesis, University of Edinburgh, 2003. http://hdl.handle.net/1842/11648.

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The contributions of this thesis are four fold. Firstly, the implementation of COST 259 directional channel model in terms of tapped delay line is developed. While the implemented channel model facilities link level simulation, capacity analysis indicates that the delay spread has relatively small impact as compared to the azimuth spread (AS) on the channel capacity. Secondly, an antenna model which incorporates various antenna effects into the performance study of antenna arrays (AAs0 is developed. A comprehensive study of these effects through computer simulations reveals that the use of ideal parameters in the literature always over-predicts the actual system performance. The use of different antenna configurations yields different results with some arrays performing better in certain scenario than others. Furthermore, a proposed mutual coupling (MC) model explains the conflicting results reported to date in the literature. The overall effect of MC is to reduce the system performance despite lower fading correlation is being obtained between the pair of elements when MC is taken into account. Thirdly, the impact of using different azimuth-of-arrival (AOA) and elevation-of-arrival (EOA) distributions on the performance of various AAs is found to be minimal. The determining factor for the AA performance is the standard deviation of the underlying distribution. Finally, three-dimensional spatial fading correlation (SFC) models for several CAA geometries are developed. The closed-form SFC functions are expressed in terms of AOA, EOA and the geometry of the AA under study. Such closed-form expressions can be used to determine the correlation matrices at both base station and mobile station and thus are important in assisting the capacity analysis of single-input multiple-output and multiple-input and multiple-output systems. Furthermore, the developed SFC functions also enable the sensitivity of the AAs to be evaluated through the performance patterns. The results provide invaluable insight that can ultimately assist the design of AA algorithms. An extensive analysis on the array’s sensitivity shows that the system performance is more AS dependent than ES while the effect of mean-azimuth-of-arrival and mean-evaluation-of-arrival is array dependent. The results also show that the AS is the primary factor affecting antenna correlation and the impact of ES is mainly noticeable at small AS values. Nevertheless, in evaluating the performance of AAs, both AOQ and EOA must be taken in account. Capacity analysis also demonstrates the practicability of deploying electromagnetic vector sensor (EVS) and EVS arrays as compact AA receivers.
3

Abdelaziz, Abdelaziz Abdelmonem. "Compact multi-band microstrip planar antennas and arrays." Thesis, Cranfield University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315345.

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Eck, James Arthur. "Compact Antennas and Arrays for Unmanned Air Systems." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4297.

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A simple and novel dual-CP printed antenna is modelled and measured. The patch antennais small and achieves a low axial ratio without quadrature feeding. The measured pattern showsaxial ratio pattern squinting over frequency. Possible methods of improving the individual element are discussed, as well as an array technique for improving the axial ratio bandwidth. Three endfire printed antenna structures are designed, analyzed, and compared. The comparison includes an analysis of costs of production for the antenna structures in addition to their performance parameters. This analysis concludes that cost of materials primarily reduces the size of antennas for a given gain and bandwidth. An antenna stucture with an annular beam pattern for down-looking navigational radar is proposed. The antenna uses sub-wavelength grating techniques from optics to achieve a highly directive planar reflector which is used as a ground plane for a monopole. A fan-beam array element is fabricated for use in a digitally steered receive array for obstacle avoidance radar. The steered beam pattern is observed. The element-dependent phase shifts for a homodyned signal in particular are explored as to their impact on beam steering.
5

Calvelo, Santos Daniel Emilio. "Observations of X-ray binaries using the Australia Telescope Compact Array-Compact Array Broadband Backend." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/343755/.

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The exploration of radio emission from the relativistic jets of X-ray binaries has become key to understanding accretion onto compact objects. Upgrades to existing radio telescope arrays have improved the ability of these instruments to detect faint sources and their unique behaviours. In this thesis I address the use of one such instrument in observing several X-ray binary systems: the Australia Telescope Compact Array - Compact Array Broadband Backend (ATCA-CABB). Firstly, a study of the adverse effects that may arise when imaging spectrally variable sources using broad bandwidths, with emphasis on ATCA-CABB. Images are produced from model data and examined to find any false structures. I then discuss complications that such features may cause when attempting to interpret real structure in images. Secondly, the results of attempts to observe the black hole X-ray binaries, GRO J1655-40 and XTE J1550-564, in quiescence with ATCA-CABB are presented. Upper limits from the non-detection of these sources are used in exploring the lower luminosity region of the radio/X-ray correlation for hard state black hole X-ray binaries and the implications of “universal” scatter is discussed. Thirdly, a 16 day campaign observing the radio emission of the neutron star Xray binary Circinus X-1 over a complete orbit during an historically faint state is presented. Variability in the source is examined and corrected images are compared with archival maps in order to find any differences. I discuss my findings in terms of secular changes in jet geometry and behaviour. Finally, the first successful millimetre detections of neutron star X-ray binaries Circinus X-1 and Scorpius X-1 are presented. Sub-arcsecond jet structure in Circinus X-1 is compared to the existing centimetre maps, providing additional support for theories proposed earlier in the thesis. The radio to mm spectrum of both sources is estimated and discussed. This thesis concludes with a description of the broader impacts of the above projects, as well as possibilities for future research in each field.
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Dahlberg, Timoteus. "Compact Representation and Efficient Manipulation of Sparse Multidimensional Arrays." Thesis, Umeå universitet, Institutionen för datavetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-92841.

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Efficient manipulation of sparse multidimensional arrays, or tensors, is of interest because their decompositions have applications in many different areas. These areas include neuroscience, machine learning, psychometrics, data mining, numerical analysis, and more. This thesis aims to develop the performance-critical parts of a library for manipulating sparse multidimensional arrays by focusing on sorting them in one or more dimensions—a fundamental operation on which many other operations can be built. High performance is achieved by tailoring algorithms to a compact representation scheme. Evaluation is done on different algorithms and implementation techniques. The result is shown to be 20 to 70 times faster than qsort in the C standard library. The resulting library is open source.
7

Bougan, Timothy B. "COMPACT HIGH-SPEED DISK RECORDER." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/608597.

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International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, California
In order to meet the high-speed and high-density recording requirements for today's development and testing environments, we are seeking to merge the cutting edge technologies of tiny, high-performance disk drives and field programmable gate arrays (FPGAs) to build a high-speed compact disk recorder (CHSDR). Specifically, we designed, built, and tested a multi-drive controller that handles the interleaving of data to eight inexpensive IDE drives. These drives and controller comprise a "cell" capable of transferring data at 2.45 MB/sec (4 to 5 times the rate of a single drive). Furthermore, these "cells" can be run in parallel (with a single controller interleaving data between the cells). This "tree" effect multiplies the data rate by the number of cells employed. For example, 8 cells (of 8 drives each) can reach nearly 20 MB/second (sustained) and can be built for less than $30,000. The drives we used are the size of match boxes (the Hewlett Packard KittyHawk). These tiny drives hold 42 megabytes each and can withstand 150 Gs while operating. The cell controller is a Xilinx 4005 FPGA. Furthermore, we've designed a 120 MB/sec RAM FIFO to buffer data entering the system (to account for unavoidable drive seek latencies). In short, the compact high-speed disk array is a small, relatively low cost recording solution for anyone requiring high data speed but modest data volume. Missile shots, nuclear tests, and other short-term experiments are good examples of such requirements.
8

Lovell, Jack James. "Development of smart, compact fusion diagnostics using field-programmable gate arrays." Thesis, Durham University, 2017. http://etheses.dur.ac.uk/12401/.

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Fusion research requires high quality diagnostics to understand the complex physical processes involved. Traditional analogue systems are complex, large and expensive, and expansion of diagnostic capabilities is often impossible without building a completely new system at considerable expense. Field-programmable gate array (FPGA) technology can provide a solution to this problem. By implementing complex functionality and digital signal processing on an FPGA chip, diagnostic hardware can be greatly simplified and compacted. In this thesis we describe the enhancements of two diagnostics for the MAST-Upgrade tokamak using FPGA technology. Firstly, the design of the back end electronics for the new divertor bolometer is described. Results of tests of the new electronics at a number of sites, including lab-based testing and tokamak installations, are also presented. We demonstrate the correct functionality of the electronics and illustrate a number of important effects which must be taken into account when interpreting bolometer data on MAST-U. Secondly, we describe the new control and acquisition electronics developed for the MAST-U divertor Langmuir probe diagnostic. Much of the analogue control circuitry of the previous system has been upgraded to a digital implementation on an FPGA, which results in a significantly more compact and cost effective design. Given that MAST-Upgrade will feature around 850 Langmuir probes, these improvements are extremely important to keep the diagnostic manageable. Again, results are presented from the testing of the system at several sites, which both demonstrate the correct functionality of the new system and provide information on the diagnostic behaviour which needs to be accounted for when interpreting the probe data during MAST-U experiments.
9

Volmer, Christian. "Compact antenna arrays in mobile communications a quantitative analysis of radiator coupling." Ilmenau Univ.-Verl, 2009. http://d-nb.info/1000814149/04.

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Volmer, Christian. "Compact antenna arrays in mobile communications A quantitative analysis of radiator coupling." Ilmenau Universitätsbibliothek Ilmenau, 2010. http://d-nb.info/1001147197/34.

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Books on the topic "Compacts arrays":

1

Sangster, Alan J. Compact Slot Array Antennas for Wireless Communications. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-01753-8.

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Pavan, Paolo. Floating gate devices: Operation and compact modeling. Boston: Kluwer Academic, 2004.

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Ip, Kenneth Ho Yan. A compact four-element injection-locked scanning antenna array. Ottawa: National Library of Canada, 2001.

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Pavan, Paolo. Floating gate devices: Operation and compact modeling. Boston: Kluwer Academic, 2004.

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Jörg, Philipp. Deeply virtual compton scattering at CERN - what is the size of the proton? Freiburg: Universität, 2017.

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Sangster, Alan J. Compact Slot Array Antennas for Wireless Communications. Springer, 2018.

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Pavan, Paolo, Luca Larcher, and Andrea Marmiroli. Floating Gate Devices: Operation and Compact Modeling. Springer, 2004.

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Pavan, Paolo, Luca Larcher, and Andrea Marmiroli. Floating Gate Devices: Operation and Compact Modeling. Springer, 2010.

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Maggiore, Michele. Gravitational Waves. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198570899.001.0001.

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A comprehensive and detailed account of the physics of gravitational waves and their role in astrophysics and cosmology. The part on astrophysical sources of gravitational waves includes chapters on GWs from supernovae, neutron stars (neutron star normal modes, CFS instability, r-modes), black-hole perturbation theory (Regge-Wheeler and Zerilli equations, Teukoslky equation for rotating BHs, quasi-normal modes) coalescing compact binaries (effective one-body formalism, numerical relativity), discovery of gravitational waves at the advanced LIGO interferometers (discoveries of GW150914, GW151226, tests of general relativity, astrophysical implications), supermassive black holes (supermassive black-hole binaries, EMRI, relevance for LISA and pulsar timing arrays). The part on gravitational waves and cosmology include discussions of FRW cosmology, cosmological perturbation theory (helicity decomposition, scalar and tensor perturbations, Bardeen variables, power spectra, transfer functions for scalar and tensor modes), the effects of GWs on the Cosmic Microwave Background (ISW effect, CMB polarization, E and B modes), inflation (amplification of vacuum fluctuations, quantum fields in curved space, generation of scalar and tensor perturbations, Mukhanov-Sasaki equation,reheating, preheating), stochastic backgrounds of cosmological origin (phase transitions, cosmic strings, alternatives to inflation, bounds on primordial GWs) and search of stochastic backgrounds with Pulsar Timing Arrays (PTA).
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Alden, Maureen. Paradigms for Odysseus. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780199291069.003.0006.

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The poem compares Odysseus with Heracles through shared epithets and exploits (including catabasis and archery), but the Heracles paradigm is discredited by Heracles’ murder of his guest-friend Iphitus. The vignette of Odysseus’ naming by his grandfather, Autolycus, identifies the source of the hero’s ancestral cunning and motivates his visit as a young man to Parnassus, where he kills a boar when hunting with his uncles, thereby effecting his initiation into adulthood. The boar hunt test is the pattern for the bow contest: Odysseus corresponds in each to the marginalized initiation candidate. The lightly armed Odysseus who, like Apollo, kills young men with his arrows gives way in the fight with the suitors to a heavily armed hoplite figure whose divine model is Apollo Delphinios, who at the new moon of the new year presides over the ἀπέλλα‎ (assembly) where young men make the transition into the community of adult men.
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Book chapters on the topic "Compacts arrays":

1

Rieke, G. H., C. L. Thompson, E. F. Montgomery, and M. J. Rieke. "Compact, High Resolution Cryogenic Spectrometer." In Infrared Astronomy with Arrays, 348. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1070-9_116.

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Rabinovich, Victor, and Nikolai Alexandrov. "Compact Car-Mounted Arrays." In Antenna Arrays and Automotive Applications, 139–71. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-1074-4_6.

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Zotter, Franz, and Matthias Frank. "Compact Spherical Loudspeaker Arrays." In Ambisonics, 153–70. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-17207-7_7.

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Sangster, Alan J. "Compact Planar Resonator Arrays." In Signals and Communication Technology, 243–83. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01753-8_10.

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Mäkinen, Veli, and Gonzalo Navarro. "Compressed Compact Suffix Arrays." In Combinatorial Pattern Matching, 420–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-27801-6_32.

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Mäkinen, Veli. "Compact Suffix Array." In Combinatorial Pattern Matching, 305–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45123-4_26.

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Bechlars, Jörg, and Rainer Buhtz. "Cell Array-Ausgabe." In Springer Compass, 140–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-96930-0_10.

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Bechlars, Jörg, and Rainer Buhtz. "Cell-Array-Ausgabe." In Springer Compass, 143–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-78274-9_10.

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Sauvage, M., P. O. Lagage, and T. X. Thuan. "10 µm Imaging of the Blue Compact Galaxy HE 2–10." In Infrared Astronomy with Arrays, 325–26. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1070-9_105.

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Malavena, Gerardo. "Modeling of GIDL–Assisted Erase in 3–D NAND Flash Memory Arrays and Its Employment in NOR Flash–Based Spiking Neural Networks." In Special Topics in Information Technology, 43–53. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-85918-3_4.

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Abstract:
AbstractSince the very first introduction of three-dimensional (3–D) vertical-channel (VC) NAND Flash memory arrays, gate-induced drain leakage (GIDL) current has been suggested as a solution to increase the string channel potential to trigger the erase operation. Thanks to that erase scheme, the memory array can be built directly on the top of a $$n^+$$ n + plate, without requiring any p-doped region to contact the string channel and therefore allowing to simplify the manufacturing process and increase the array integration density. For those reasons, the understanding of the physical phenomena occurring in the string when GIDL is triggered is important for the proper design of the cell structure and of the voltage waveforms adopted during erase. Even though a detailed comprehension of the GIDL phenomenology can be achieved by means of technology computer-aided design (TCAD) simulations, they are usually time and resource consuming, especially when realistic string structures with many word-lines (WLs) are considered. In this chapter, an analysis of the GIDL-assisted erase in 3–D VC nand memory arrays is presented. First, the evolution of the string potential and GIDL current during erase is investigated by means of TCAD simulations; then, a compact model able to reproduce both the string dynamics and the threshold voltage transients with reduced computational effort is presented. The developed compact model is proven to be a valuable tool for the optimization of the array performance during erase assisted by GIDL. Then, the idea of taking advantage of GIDL for the erase operation is exported to the context of spiking neural networks (SNNs) based on NOR Flash memory arrays, which require operational schemes that allow single-cell selectivity during both cell program and cell erase. To overcome the block erase typical of nor Flash memory arrays based on Fowler-Nordheim tunneling, a new erase scheme that triggers GIDL in the NOR Flash cell and exploits hot-hole injection (HHI) at its drain side to accomplish the erase operation is presented. Using that scheme, spike-timing dependent plasticity (STDP) is implemented in a mainstream NOR Flash array and array learning is successfully demonstrated in a prototype SNN. The achieved results represent an important step for the development of large-scale neuromorphic systems based on mature and reliable memory technologies.

Conference papers on the topic "Compacts arrays":

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McCune, R. C., R. P. Cooper, and O. O. Popoola. "Post-Processing of Cold-Spray Deposits of Copper and Iron." In ITSC 2000, edited by Christopher C. Berndt. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.itsc2000p0905.

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Abstract Layers of high-purity copper and iron produced by cold gas-dynamic spraying have been thermally processed to induce recrystallization and grain growth. In the case of copper deposits, the as-sprayed structure could be "pinned" by arrays of Cu2O particles present on the surfaces of the feedstock powder, however copper powders of higher purity and sphericity yielded sprayed structures which could be annealed to induce recrystallization and grain growth. The higher purity copper compacts exhibited a morphological change in fracture from a brittle, intraparticle mode in the as-deposited condition, to a ductile, "cup-and-cone" morphology in the annealed condition. For compacts produced from water atomized iron, annealing at sub-critical temperatures produced recrystallization and grain growth as found with copper, and thermal processing in the austenitic region resulted in altogether new and coarser grain structures upon cooling. Ease of thermal processing of cold-sprayed materials may offer additional processing routes for engineered surfaces and functional devices produced in this manner.
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Taghizadeh, Mohammad R., Jari Turunen, Brian Robertson, Antti Vasara, and Jan Westerholm. "Passive Optical Array Generators." In Optical Computing. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/optcomp.1991.me23.

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Recent progress in designing and manufacturing space-invariant optical array generators is described. We begin by demonstrating Dammann gratings [1] that generate even-numbered arrays as large as 128x128, and odd-numbered arrays of up to 201x201 spots. The concept of a hybrid hologram [2] is applied to the fabrication of array generators, and extremely high-efficiency (close to 90%) components are obtained. Several novel types of array generators with multiple phase levels are introduced. These can e.g. reconstruct arrays with different fan-out at different angles of incidence. The application of rigorous diffraction theory to design highly efficient and compact array generators is also discussed.
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Yang, Jingyi, and Zhong You. "Compactly Folding Rigid Panels With Uniform Thickness Through Origami and Kirigami." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97946.

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Abstract In this paper, we investigate and evaluate origami and kirigami patterns that enable folding arrays made from flat rigid panels with uniform thickness into compact stacks. In deployed state, all panels form a completely flat plane; while in folded state, no voids exist within the stack. Two approaches are proposed. The first approach folds an array of identical rectangular panels into compact stacks. By drawing a Hamiltonian circuit over the array, a method of placing revolute joints is presented. By selecting a symmetric Hamiltonian circuit, we show that the array can be folded into two stacks. The second approach is case specific, which folds arrays consisting of square and half square triangular panels into stacks. Three basic units as well as their combinations are proposed, all of which lead to compact folding. Our designs can be applied to package solar panels for aerospace applications.
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Herloski, Robert. "Gradient Index Lens Array Through-focus Modulation Transfer Function Modeling." In Gradient-Index Optical Imaging Systems. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/giois.1994.gtub4.

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Radial gradient index (GRIN) fiber lenses are becoming more and more common in a variety of optical devices, especially photocopying machines. In these machines arrays of GRIN lenses are used to form compact unity magnification lenses. These arrays are commercially available from the Nippon Sheet Glass Co. under the trade name SELFOC1 lens array, or SLA.
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Lin, Freddie, Eva M. Strzelecki, and William Liu. "Compact Crossbar Switch For Optical Interconnects." In Optical Computing. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/optcomp.1991.me18.

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Optical crossbar switches are used in a variety of applications: in optical computing, optical communications, and optical interconnects in computers. High speed optical crossbars have been demonstrated for the use in communications such as waveguide electro-optic switches in LiNbO3 [1], semiconductor quantum well modulators [2]. For applications in optical computing it is important to have very large switching arrays to utilize the massively parallel capability of optical signal processing. This has been achieved using spatial light modulators (SLM) which are available in large arrays, such as liquid crystal TVs and ferroelectric liquid crystal devices [3], and high speed, such as PLZT [4] or quantum well modulators [2]. Many systems based on SLMs utilize the vector-matrix multiplication configuration to realize crossbar networks, linear algebra operations, iterative vector-matrix multiplication, and optical neural networks. Crossbars based on this configuration, though suffer from fan-out losses, are very versitile, offer broadcasting capability needed in optical interconnects, and can easily form large array sizes. Most SLM based systems, which use bulk optics, lenslet arrays, and fiber optic couplers [5], are bulky and require tedious alignment. In this paper we describe a compact vector-matrix mulitplier in which waveguides with arrays of grating couplers are used to distribute and collect light signals.
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Chalupnik, Michelle, Anshuman Singh, Marko Loncar, and Moe Soltani. "Scalable two-dimensional photonic phased array with compact and ultralow power resonator phase shifters." In CLEO: Applications and Technology. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_at.2022.jth6c.2.

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We demonstrate two-dimensional silicon photonic phased arrays with compact ultralow power microresonator phase-shifters within the array. Each phase-shifter consumes an average ~100 µW static power for resonance alignment, and ~25 µW power for far field beamforming.
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Przekwas, Andrzej J., Zhijian Chen, and Marek Turowski. "High Fidelity and Compact Models of Synthetic Jets and Their Application in Aerodynamics and Microelectronics." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0308.

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Abstract Computational simulation of coupled unsteady fluid mechanics and electromechanical actuation of a single synthetic jet can be performed with available CFD tools. Modeling of flow physics of large arrays of synthetic jets is computationally very challenging. This paper presents two complementary computational technologies: a high-fidelity physical model of a single jet, and a reduced (compact) model of the jet for modeling large array of synthetic jets. The high-fidelity model first has been validated against experimental data and then used to calibrate the compact model. The paper presents computational evaluation of accuracy and range of applicability of compact models and demonstrates them on multi-dimensional simulations of aerodynamic flow control and on electronics cooling applications.
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Baker, H. J., and D. R. Hall. "High Power Multichannel Waveguide Lasers." In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1996. http://dx.doi.org/10.1364/cleo_europe.1996.ctui1.

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High power and efficient carbon dioxide laser operation has been achieved with diffusion cooling in compact devices using the large area slab RF discharge technique [1]. An alternative approach to laser power scaling, useful when technological constraints limit the power which may be extracted from individual laser oscillator, is to employ the array laser concept. Considerable work has been done on developing techniques for producing phaselocked operation, both with laser diode arrays and with arrays of waveguide gas lasers. Here we consider planar and 2-d laser arrays based on multiple elemental waveguide carbon dioxide laser oscillators, operating in the mutually incoherent mode. The waveguide CO2 laser is a very suitable building block for laser arrays because it produces excellent intrinsic beam quality, is scaleable in monolithic planar and stacked plane geometries, and may be conveniently excited from a single radiofrequency power generator.
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MacCormack, Stuart, and Robert W. Eason. "Phase conjugate techniques for diode laser brightness enhancement." In Photorefractive Materials, Effects, and Devices II. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/pmed.1991.tub1.

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Diode laser arrays provide a compact, high power, high efficiency source of monochromatic light and are finding many applications in all solid-state mini and micro-laser systems. Unfortunately, the preferred modes of operation of free-running, conventional gain-guided laser arrays involve the simultaneous oscillation of many array transverse modes1. This results in an undesirable broadened twin-lobe output in the far field which is generally several times the diffraction limit of the emitting region. This leads to poor focussability which in turn severely limits the efficiency of launching into optical fibers, coupling into planar waveguides and longitudinal pumping of solid-state micro-lasers.
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Caffey, David, and W. A. Clarkson. "Non-imaging Laser Diode Array Beam Shaper." In Semiconductor Lasers: Advanced Devices and Applications. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/slada.1995.mc.4.

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Laser diode arrays are inexpensive, compact, efficient, and reliable light sources. However, the output beam, which is highly elliptical, is difficult to both efficiently collect and concentrate. This has limited continuous wave (CW) diode sources to power levels under 100 Watts. The fast axis of the laser diode array output tends to have good beam quality, M2~ 2, and a source size of ~ 1 um. The slow axis of laser diode broad stripes and of array bars is highly multimode, typically having an angular distribution of 10 degrees at the 1/e2 power points. The slow axis beam quality for a 500 um wide stripe is thus M2~ 70, and M2~ 1400 for a one centimeter array. One means of improving the brightness is to individually fiber couple broad stripe diodes, and then bundle the fiber ends together. Another is to collimate the fast axis of one centimeter arrays using a fiber lens1, and then fiber couple into a linear array of fibers. The output ends of the fibers are also bundled together. Both techniques are compact and relatively simple, and power is scaled by increasing the number of fibers in the bundle. M2 ~ 350 are available at 60 Watts output using the latter technique. It is difficult to scale beyond 100 Watts without increasing M2 to values greater than 500. This is due to loss of brightness in fiber coupling, as an essentially linear source is being coupled into a round fiber, or in mode mixing as light propagates through the fiber. Brightness is further reduced in fiber bundling by the presence of the fiber cladding, and by the less than unity packing factor of round fibers.

Reports on the topic "Compacts arrays":

1

Rothe, R. E. Massive subcritical compact arrays of plutonium metal. Office of Scientific and Technical Information (OSTI), April 1998. http://dx.doi.org/10.2172/677063.

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Serrano, Jason Dimitri, Alexander S. Chuvatin, M. C. Jones, Roger Alan Vesey, Eduardo M. Waisman, V. V. Ivanov, Andrey A. Esaulov, et al. Compact wire array sources: power scaling and implosion physics. Office of Scientific and Technical Information (OSTI), September 2008. http://dx.doi.org/10.2172/941403.

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Sastry, Ann M. Quantitative Prediction of Available Power in Mitochondrial Arrays for Compact Power Supplies. Fort Belvoir, VA: Defense Technical Information Center, June 2010. http://dx.doi.org/10.21236/ada548911.

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Sanford, T. W. L., T. J. Nash, and B. M. Marder. X-ray emission from a high-atomic-number z-pinch plasma created from compact wire arrays. Office of Scientific and Technical Information (OSTI), March 1996. http://dx.doi.org/10.2172/211368.

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Hoffman, Jeffrey. Using Blind Source Separation and a Compact Microphone Array to Improve the Error Rate of Speech Recognition. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.5258.

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Rogers, Gordon. Annual G20 scorecard – Research performance 2023. Clarivate, August 2023. http://dx.doi.org/10.14322/isi.grr.annual.g20.scorecard.2023.

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The Institute for Scientific Information (ISI)™ releases an annual G20 scorecard that summarizes and compares the research and innovation capabilities of the G20 economies, known for their significant investments in education, research and technology. The G20 scorecard serves as a vital reference for researchers, technologists and policymakers due to shifting global research trends. The scorecard and its rich array of interactive data is now available in a dynamic online format to enhance accessibility and allow for rapid comparative analyses, alongside a downloadable executive summary highlighting key findings for 2023.
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Fenn, A. J., and S. Srikanth. Radiation Pattern Measurements of the Expanded Very Large Array (EVLA) C-Band Feed Horn in the MIT Lincoln Laboratory New Compact Range: Range Validation at 4 GHz. Fort Belvoir, VA: Defense Technical Information Center, November 2004. http://dx.doi.org/10.21236/ada428369.

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