120 research outputs found
Delivering the smart grid: Challenges for autonomous agents and multi-agent systems research
No full textRestructuring electricity grids to meet the increased demand caused by the electrification of transport and heating, while making greater use of intermittent renewable energy sources, represents one of the greatest engineering challenges of our day. This modern electricity grid, in which both electricity and information flow in two directions between large numbers of widely distributed suppliers and generators — commonly termed the ‘smart grid’ — represents a radical reengineering of infrastructure which has changed little over the last hundred years. However, the autonomous behaviour expected of the smart grid, its distributed nature, and the existence of multiple stakeholders each with their own incentives and interests, challenges existing engineering approaches. In this challenge paper, we describe why we believe that artificial intelligence, and particularly, the fields of autonomous agents and multi-agent systems are essential for delivering the smart grid as it is envisioned. We present some recent work in this area and describe many of the challenges that still remain
Soviet Strategy Toward African National Liberation Movements
No full textThe author argues that Soviet involvement in the developing world can be heuristically characterized by two ideal types of strategies--model and ally strategies. With an ally strategy the Soviet Union seeks to develop an alliance relationship with a developing world regime or movement, largely on the basis of mutual economic, strategic and political interests. Potential allies, therefore, are selected on the basis of the interests they share with the Soviet Union and not on the basis of their political orientation. Conversely, with a model strategy Soviet relations are largely based on the basis of a regime's, or political movement's, commitment to Soviet style Marxism-Leninism. Using these categories, this study seeks to determine: what strategy, if any, has guided recent Soviet strategy toward African national liberation movements. Toward this end, it examines three cases studies: (a) Soviet strategy toward the African National Congress, (b) Soviet strategy toward the Movimento Popular de Libertacao de Angola (MPLA), and (c) Soviet strategy toward the Zimbabawe African People's Union. The author concludes that in each of the above cases Soviet strategy generally conformed to the model strategy during the 1970s. However, since 1980 Soviet strategy has increasingly contained various elements of an ally strategy.Made available in DSpace on 2014-12-15T20:02:01Z (GMT). No. of bitstreams: 1
8815367.pdf: 17920538 bytes, checksum: 11e5001f3c780eb6a5cdb19c2bf4fa94 (MD5)
Previous issue date: 1988Embargo set by: Seth Robbins for item 69979
Lift date: Forever
Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDsRestricted to the U of I community idenfinitely during batch ingest of legacy ETDsU of I Only349 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1988
Machine-Assisted Phonemic Analysis
No full textThere is a consensus between many linguists that half of all languages risk disappearing by the end of the century. Documentation is agreed to be a priority. This includes the process of phonemic analysis to discover the contrastive sounds of a language with the resulting benefits of further linguistic analysis, literacy, and access to speech technology. A machine-assisted approach to phonemic analysis has the potential to greatly speed up the process and make the analysis more objective.
Good computer tools are already available to help in a phonemic analysis, but these primarily provide search and sort database functionality, rather than automated analysis. In computational phonology there have been very few studies on the automated discovery of phonological patterns from surface level data such as narrow phonetic transcriptions or acoustics.
This thesis addresses the lack of research in this area. The key scientific question underpinning the work in this thesis is "To what extent can a machine algorithm contribute to the procedures needed for a phonemic analysis?". A secondary question is "What insights does such a quantitative evaluation give about the contribution of each of these procedures to a phonemic analysis?"
It is demonstrated that a machine-assisted approach can make a measurable contribution to a phonemic analysis for all the procedures investigated; phonetic similarity, phone recognition & alignment, complementary distribution, and minimal pairs. The evaluation measures introduced in this thesis allows a comprehensive quantitative comparison between these phonemic analysis procedures. Given the best available data and the machine-assisted procedures described, there is a strong indication that phonetic similarity is the most important piece of evidence in a phonemic analysis.
The tools and techniques developed in this thesis have resulted in tangible benefits to the analysis of two under-resourced languages and it is expected that many more languages will follow
Long Island History Journal
No full textTABLE OF CONTENTS -
FEATURE ARTICLES:
Friends in the Spirit: African Americans and the Challenge to Quaker Liberalism, 1776-1915
by Lynda R. Day - 1 /
Environment vs. Development: Groundwater and Land Use Planning in Nassau and Suffolk Counties
by Lee E. Koppelman - 16 /
“The Village of East-Hampton,” A Sketch by John Howard Payne edited with an Introduction and Notes
by Robert P. Rushmore - 25 /
Who Says the Montauk Tribe is Extinct? Judge Abel Blackmar’s Decision in Wyandank V. Benson (1909)
by John A. Strong - 39 /
Promises Kept: Empire State College on its Twenty-Fifth Anniversary
by Barbara Kantz - 56 /
Presidential Elections in the Twentieth Century: Patterns on Long Island
by Howard A. Scarrow, assisted by Dawn Walsh - 71 /
Who Has Done More? Vincent Seyfried and the Discovery of Queens History
by Jeffrey A. Kroessler - 79 /
Julia Pettee’s Year in Brooklyn at the Pratt Institute Library School: 1894-1895
by Mario Charles and Sandra Roff - 86 /
SECONDARY SCHOOL ESSAY CONTEST WINNERS:
William Levitt: Businessman or Bigot?
by Whitney P. Bowe - 97 /
The Algonquians of Long Island as an Agrarian Society
by Danielle Lindemann - 104 /
A Sailboat for the Bay: The Narrasketuck and its Class
by Kempton B. Van Hoff - 110 /
REVIEWS:
Robert B. MacKay, Anthony Baker and Carol A. Traynor, eds. Long Island Country Houses and Their Architects, 1860-1940
by Deborah J. Johnson - 116 /
Lynne Matarrese. The History of Levittown, New York
by Barbara Kelly - 118 /
Margaret Lundrigan Ferrer and Tova Navarra. Levittown: The First 50 Years
by Carol Hoenig - 119 /
Mary Parker Buckles. Margins: A Naturalist Meets Long Island Sound
by Marilyn Weigold - 121 /
Claire Nicolas White. Stanford White: Letters to His Family
by Mark L. Taff - 123 /
Thomas McGonigle. Going to Patchogue
by Jim Papa - 125 /
Giacinta Bradley Koontz, ed. The Harriet Quimby Research Conference Journal, Volume Two-1996
by Frank Erk - 129 /
George A. Raisglid. Uprooted: the Memoirs of a Holocaust Survivor
by Edith Gordon - 130 /
Ebenezer Miller; Margaret Davis Gass and Willis H. White, eds. Diary of Ebenezer Miller of Miller Place, Long Island, New York, 1762-1768
by Edward Smith - 133 /
VIDEO REVIEW:
Ziggy Attias and Ofer Cohen. Traveling the Distance
by Gaynell Stone - 133 /
BOOK NOTES - 134SUNY Digital Repository (DSpace): Stony Brook University - Campus Newspapers and JournalsArchived web conten
The influence of galactic cosmic rays on ion-neutral hydrocarbon chemistry in the upper atmospheres of free-floating exoplanets
No full textThe authors highlight financial support of the European Community under the FP7 by an ERC starting grant.Cosmic rays may be linked to the formation of volatiles necessary for prebiotic chemistry. We explore the effect of cosmic rays in a hydrogen-dominated atmosphere, as a proof-of-concept that ion–neutral chemistry may be important for modelling hydrogen-dominated atmospheres. In order to accomplish this, we utilize Monte Carlo cosmic ray transport models with particle energies of 106 eV<E<1012 eV in order to investigate the cosmic-ray enhancement of free electrons in substellar atmospheres. Ion–neutral chemistry is then applied to a Drift–Phoenix model of a free-floating giant gas planet. Our results suggest that the activation of ion–neutral chemistry in the upper atmosphere significantly enhances formation rates for various species, and we find that C2H2, C2H4, NH3, C6H6 and possibly C10H are enhanced in the upper atmospheres because of cosmic rays. Our results suggest a potential connection between cosmic-ray chemistry and the hazes observed in the upper atmospheres of various extrasolar planets. Chemi-ionization reactions are briefly discussed, as they may enhance the degree of ionization in the cloud layer.Peer reviewe
A Interação entre geradores solares fotovoltaicos e veículos elétricos conectados à rede elétrica pública
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Civil, Florianópolis, 2011Ao longo dos últimos anos, a geração centralizada de energia elétrica tem sido o modelo tradicionalmente utilizado no Brasil. Porém, com a crescente preocupação com as questões energéticas e ambientais,a geração distribuída tem despontado como uma opção para o setor elétrico, pois a geração ocorre de forma descentralizada, com unidades geradoras de pequeno porte, que podem otimizar o sistema de geração, transmissão e distribuição. Diferentes tecnologias podem ser utilizadas na forma de geração distribuída e dentre elas pode-se destacar os geradores solares fotovoltaicos, que geram eletricidade a partir da luz do sol através do efeito fotovoltaico. Embora não sejam geradores, os veículos elétricos ao serem conectados em uma tomada elétrica residencial, comercial ou industrial que fará parte de uma rede elétrica inteligente (smart grid), poderão ser utilizados como um gerador distribuído em momentos estratégicos, podendo contribuir para a redução do pico de demanda do alimentador no horário de ponta Este trabalho tem como objetivo avaliar a interação degeradores solares fotovoltaicos e veículos elétricos conectados à rede elétrica pública. Dessa forma, foi analisada a potencial contribuição energética dos veículos elétricos, no horário de ponta, para o alimentador TDE05 que abastece os bairros Santa Mônica, Córrego Grande e Trindade, na cidade de Florianópolis - SC, e que apresenta pico de consumo noturno. Além disso, foi analisado o potencial de geração de geradores solares fotovoltaicos instalados nas coberturas dos prédios da Universidade Federal de Santa Catarina - UFSC, que abrigam os usuários de um grande grupo de veículos (os quais poderiam ser elétricos), a fim de verificar a sua contribuição para a recarga desses veículos e o impacto energético para o alimentador TDE06 que atende a região da universidade. Os resultados mostraram que a atuação dos veículos elétricos como geradores distribuídos (V2G) pode modelar de forma positiva a curva de demanda do alimentador, quando conectados à rede elétrica pública. A partir das análises verificou-se também que para a maior parte dos meses a recarga dos veículos elétricos no período da madrugada não representa um problema para a rede elétrica, pois não há ocorrência de picos de demanda superiores ao pico de demanda noturno do alimentador, exceto em dias muito quentes, tipicamente verificados nos meses de verão. Os estudos mostraram também a potencialidade da utilização dos veículos elétricos como dispositivos de armazenamento de energia gerada pelos geradores fotovoltaicos nas coberturas dos prédios da UFSC, visto que na maior parte do tempo os veículos permanecem estacionados. Observou-se que geradores solares fotovoltaicos integrados às coberturas dos prédios existentes na UFSC podem contribuir para a redução da curva de demanda do alimentador TDE06, uma vez que a geração solar é concomitante com o horário de maior consumo dos prédios da universidade (perfil de demanda diurno). Em vários dias verificou-se a possibilidade de injetar na rede elétrica o excedente da geração de energia, e caso houvesse um sistema de tarifação apropriado, essa energia poderia ser vendida à concessionária local.However with the increasing preoccupation referring energy production and the environment, decentralized energy generation is appointing to an interesting alternative for the electrical grid. This because the small units of power generation units are able to contribute to the generation, transmission and distribution of electric energy. Different technologies can be used as distributed generation units and a favorite among them are photovoltaic solar generators, which generate to electricity from sunlight through the photovoltaic effect. Although they are not distributed generators, electric vehicles to be connected to an outlet of the residential commercial or industrial grid, can be used as a distributed generators at strategic times within a smart grid, contributing to the reduction of feeder peak demand at peak hours. This study aims to evaluate the interaction of photovoltaic generators and electric vehicles connected to the public grid. Therefore, for the feeder that supplies the neighborhoods TDE05 Santa Monica, Córrego Grande and Trindade, in Florianópolis - SC, which has peak evening consumption the potential energy contribution of electric vehicles during peak horary was analyzed. In addition, we analyzed the generation potential of photovoltaic systems on the roof tops of the buildings of the Universidade Federal de Santa Catarina # UFSC which are supposed to feed charging units of a large group of electric vehicles, in order to verify the their contribution to recharge these vehicles and impact energy to the university grid feeder TDE06.The results showed that the usage of the energy from accumulators of electric vehicles for distributed generation (V2G) can positively shape the demand curve of the feeder, when connected to the public grid. It was also observed that for most months the recharging process of the electric vehicles during the early morning hours is not a problem for the residential grid. This because the peak power of the electrical was not increased except on very hot days, typically seen in the summer months. The potential use of electric vehicles as storage devices for power generated by photovoltaic generators on the roofs of the buildings of the UFSC, since most of the time vehicles are parked. It was also observed that rooftop integrated photovoltaic generators contribute to the reduction of the power demand curve at TDE06 feeder, since solar generation is concomitant with the time of highest consumption of university buildings. In several days there it was observed that the PV-power generation was higher than the power consumption of the University feeder TDE06 delivering a power surplus to the electrical grid
Acoustic liner optimisation and noise propagation through turbofan engine intake ducts
No full textThe research in this thesis explores the prediction of fan noise propagation through turbofan engine intakes and its radiation to the far-field. The performance of acoustic liners installed in intakes to attenuate noise is the focus of the study. A commercial CAA (Computational AeroAcoustics) code ACTRAN/TM and an in-house shell code ANPRORAD developed at the ISVR are used to predict the performance of acoustic liners throughout the studies presented in this thesis. An automated system for running computations for a large number of cases with different liner impedance and engine operating conditions has been developed and applied for optimising liners for maximum noise benefit. The intake liner configuration of main interest is an intake lip liner. The performance of liners are investigated for broadband and tone noise source components of fan noise. In the study for an intake lip liner, an optimum single layer was identified based on the optimisations. A series of no-flow scale rig tests were conducted in the anechoic chamber at the ISVR and the test data have been appraised by comparing with numerical predictions. Reasonable agreements have been achieved, and the lip liner showed measurable noise benefit. Numerical predictions of a lip liner performance have also been performed for a fan rig intake tested in the presence of flow
The Gamut: A Journal of Ideas and Information, No. 09, Spring/Summer 1983
No full textCONTENTS OF ISSUE NO.9, SPRING/SUMMER, 1983
Concrete Poetry Contest Winners, 2
Scott Helmes,
Harsh Language, 5
Since you\u27ve been away . ..”, 6
Karl Kempton: POEM #3: to tie knots, 7
K.S. Ernst: Towering Negativism, 17
Charles Cameron: She is a plague to us fishers , 18
David Cole: selected pages, 20
R. Prost: Into the Light , 22
Joel Lipman: from Rex Lee on the Border Patrol, 23
Mark Melnicove: And not buried in a mass of irrelevant information , 24
James Miller: The Test Has Always Been . .. , 25
Naomi Rachel: NOITULOVER, 26
Marilyn Rosenberg: Waiting (Mounds), 27
Kirk Robertson: Essay, 28
Carolyn Stoloff: We know about cold rivers , 29
Allen Tice: AndNow the News, 30
Martin Hiller: Safe Space Station: Helping Hand for Teenage Runaways, 31
Robert E. Hermann: The Training of Surgeons, 47
John A.C. Greppin: Iranian, a 2,500-Year Panorama of Language, 55
Robert V. Bruckshaw: The Art of Building Admiralty Models of Ships, 59
Suzanne Hartman: Fiction: Whistle Against the Wind, 69
John Matyas: Endangered Plant Life -Our Planet\u27s Irreplaceable Treasure, 75
David Guralnik: Word Watch: Funny Names in Science and Technology, 87
Back Matter
Terry Pluto: Confessions of a Baseball Writer, 88
William Weiss: A Brush With Ginsberg, 90https://engagedscholarship.csuohio.edu/gamut_archives/1006/thumbnail.jp
Using dimers to measure biosignatures and atmospheric pressure for terrestrial exoplanets
No full textWe present a new method to probe atmospheric pressure on Earth-like planets using (O-O) dimers in the near-infrared. We also show that dimer features could be the most readily detectable biosignatures for Earth-like atmospheres and may even be detectable in transit transmission with the James Webb Space Telescope (JWST). The absorption by dimers changes more rapidly with pressure and density than that of monomers and can therefore provide additional information about atmospheric pressures. By comparing the absorption strengths of rotational and vibrational features to the absorption strengths of dimer features, we show that in some cases it may be possible to estimate the pressure at the reflecting surface of a planet. This method is demonstrated by using the O A band and the 1.06 μm dimer feature, either in transmission or reflected spectra. It works best for planets around M dwarfs with atmospheric pressures between 0.1 and 10 bar and for O volume mixing ratios above 50% of Earth's present-day level. Furthermore, unlike observations of Rayleigh scattering, this method can be used at wavelengths longer than 0.6 μm and is therefore potentially applicable, although challenging, to near-term planet characterization missions such as JWST. We also performed detectability studies for JWST transit transmission spectroscopy and found that the 1.06 and 1.27 μm dimer features could be detectable (SNR>3) for an Earth analogue orbiting an M5V star at a distance of 5 pc. The detection of these features could provide a constraint on the atmospheric pressure of an exoplanet and serve as biosignatures for oxygenic photosynthesis. We calculated the required signal-to-noise ratios to detect and characterize O monomer and dimer features in direct imaging-reflected spectra and found that signal-to-noise ratios greater than 10 at a spectral resolving power of R=100 would be required.Peer reviewe
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