An ecological characterization of Coastal Maine (north and east of Cape Elizabeth) / Stewart I. Fefer and Patricia S. Schettig: principal investigators.

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An ecological characterization of Coastal Maine (north and east of Cape Elizabeth) / Stewart I. Fefer and Patricia S. Schettig: principal investigators.

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An ecological characterization of Coastal Maine (north and east of Cape Elizabeth) / Stewart I. Fefer and Patricia S. Schettig: principal investigators.

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Quantifying pursuit-diving seabirds’ associations with fine-scale physical features in tidal streamenvironments

Acknowledgements James J. Waggitt was funded by a NERC Case studentship supported by OpenHydro Ltd and Marine Scotland Science (NE/J500148/1). Vessel-based transects were funded by a NERC (NE/J004340/1) and a Scottish National Heritage (SNH) grant. FVCOM modelling was funded by a NERC grant (NE/J004316/1). Marine Scotland Science provided time on the FRV Alba-na-Mara as part as the Marine Collaboration Research Forum (MarCRF). The bathymetry data used in hydrodynamic models (HI 1122 Sanday Sound to Westray Firth) was collected by the Maritime & Coastguard Agency (MCA) as part of the UK Civil Hydrography Programme. We wish to thank Christina Bristow, Matthew Finn and Jennifer Norris at the European Marine Energy Centre (EMEC); Marianna Chimienti, Ciaran Cronin, Tim Sykes and Stuart Thomas for performing vessel-based transects; Marine Scotland Science staff Eric Armstrong, Ian Davies, Mike Robertson, Robert Watret and Michael Stewart for their assistance; Shaun Fraser, Pauline Goulet, Alex Robbins, Helen Wade and Jared Wilson for invaluable discussions; Thomas Cornulier, Alex Douglas, James Grecian and Samantha Patrick for their help with statistical analysis; and Gavin Siriwardena, Leigh Torres, Mark Whittingham and Russell Wynn for their constructive comments on earlier versions of this manuscript.

Modelagem e controle de posição e orientação de uma Plataforma de Stewart

Este trabalho apresenta o controle de posição e orientação de um modelo não linear de Plataforma de Stewart com seis graus de liberdade construído no ambiente de sistemas multicorpos ADAMS® desenvolvido pela Mechanical Dynamics, Inc. O modelo não linear é exportado para o ambiente SIMULINK® desenvolvido pela MathWorks, Inc., onde o controle de posição e orientação é realizado a partir da linearização do modelo e a aplicação de um sistema seguidor com realimentação de estados. Utililiza-se, também o SIMULINK® para implementar a dinâmica de um sistema servoválvula e cilindro hidráulico com um servocontrole de pressão e assim simular o comportamento dinâmico de um simulador de vôo com acionamento hidráulico. A utilização destes pacotes comerciais visa obter uma economia de tempo e esforço na modelagem de sistemas mecânicos complexos e na programação para obtenção da resposta do sistema no tempo, além de facilitar a análise de várias configurações de Plataformas de Stewart

Letter from Charles Stewart to his brother-in-law, William Tudor,

This letter was written aboard the U.S.S. Franklin. Stewart writes in detail about William’s brother Henry James (Harry) Tudor, and concerns about his character, particularly his "natural indolence and indifference." He notes that like his wife, Delia, Harry spends money irresponsibly. Stewart also writes he tried to interest Harry in the pursership of the Franklin, and had hoped he would be appointed to the Consulate of Tripoli or Tunis.

Letters from William Tudor to his sister, Delia Tudor Stewart,

Three letters written during Tudor’s various travels in England and the United States. In one letter, he writes of the precautions Delia should take in their correspondence in light of increasing tension between the United States and England. One letter is in French.

Letters from Delia Tudor Stewart to her brother, William Tudor,

Three letters written while Delia was traveling with her husband in South America aboard the U.S.S Franklin. In one letter, she writes about people she has met, including Condy Raguet, the United States consul at Rio de Janeiro.

Letter from A. Dickason to Delia Tudor Stewart,

Letter from an A. Dickason in London addressing Delia’s health and spirits. Also included are notes to Delia and her sister Emma from both "A.D." and "M.D."

Letter from John H. Ladd to Delia Tudor Stewart,

Letter to Delia in the care of her brother, William Tudor, in Rio de Janeiro.

Letter from Delia Jarvis Tudor to her daughter, Delia Tudor Stewart,

One letter regarding finances and news of friends, and asking her daughter when she plans to visit. One undated letter offering marital advice to Delia and discussing news regarding mutual acquaintances in South America, as well as the plans of her brother, Harry.

Letter from Charles Samuel Stewart to William Tudor,

One letter requesting a visit to the Peruvian senate.