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Estimation and Statistical Bounds for Three-Dimensional Polar Shapes in Diffuse Optical Tomography

Boverman, Gregory; Miller, Eric L.; Brooks, Dana H.; Fang, Qianqian; Boas, David A.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /06/2008 Português
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Voxel-based reconstructions in Diffuse Optical Tomography (DOT) tend to produce very smooth images due to the attenuation of information of high spatial frequency. This then causes difficulty in estimating the spatial extent and contrast of anomalous regions such as tumors. Given an assumption that the target image is piecewise constant, we can employ a parametric model to estimate the boundaries and contrast of an inhomogeneity directly. In this paper, we describe a method to directly reconstruct such a shape boundary from diffuse optical measurements. We parameterized the object boundary using a spherical harmonic basis, and derived a new method to compute sensitivities of measurements with respect to shape parameters, based on an integral equation formulation of the forward problem. We introduced a centroid constraint to ensure uniqueness of the combined shape/center parameter estimate, and a projected Newton method was utilized to optimize the object center position and shape parameters simultaneously. Using the shape Jacobian, we also computed the Cramér-Rao lower bound on the theoretical estimator accuracy given a particular measurement configuration, object shape, and level of measurement noise. Knowledge of the shape sensitivity matrix and of the measurement noise variance allows us to visualize the shape uncertainty region in three dimensions...

Population-based review of the outcomes following hepatic resection in a Canadian health region

Dixon, Elijah; Bathe, Oliver F.; McKay, Andrew; You, Isabelle; Dowden, Scot; Sadler, David; Burak, Kelly W.; McKinnon, J. Gregory; Miller, Walter; Sutherland, Francis R.
Fonte: Canadian Medical Association Publicador: Canadian Medical Association
Tipo: Artigo de Revista Científica
Publicado em /02/2009 Português
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In Search of Integrated Specificity: Comment on Denson, Spanovic, and Miller (2009)

Miller, Gregory E.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /11/2009 Português
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Psychologists have long been interested in the integrated specificity hypothesis, which maintains that stressors elicit fairly distinct behavioral, emotional, and biological responses, molded by selective pressures to meet specific demands from the environment. This issue of Psychological Bulletin features a meta-analytic review of the evidence for this proposition by Denson, Spanovic, and Miller (2009). It concludes that the meta-analytic findings support the “core concept behind the integrated specificity model (p. XX)” and reveal that “within the context of a stressful event, organisms produce an integrated and coordinated response at multiple levels (i.e., cognitive, emotional, physiological; p. XX).” In this commentary I argue that conclusions like this are unwarranted given the data. Aside from some effects for cortisol, in fact, there was little evidence of specificity, and most of the significant findings reported would be expected by chance alone. I also contend that Denson et al. fail to consider some important sources of evidence bearing on the specificity hypothesis, particularly how appraisals and emotions couple with autonomic nervous system endpoints and functional indices of immune response. If selective pressures did give rise to an integrated stress response...

Analysis of genetic variants in never-smokers with lung cancer facilitated by an Internet-based blood collection protocol: a preliminary report

Girard, Nicolas; Lou, Emil; Azzoli, Christopher G.; Reddy, Rekha; Robson, Mark; Harlan, Megan; Orlow, Irene; Yatabe, Yasushi; Nafa, Khedoudja; Ladanyi, Marc; Viale, Agnes; Kris, Mark G.; Riely, Gregory; Miller, Vincent; Klein, Robert J.; Matsuo, Keitaro;
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
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Combined Optical and X-ray Tomosynthesis Breast Imaging1

Fang, Qianqian; Selb, Juliette; Carp, Stefan A.; Boverman, Gregory; Miller, Eric L.; Brooks, Dana H.; Moore, Richard H.; Kopans, Daniel B.; Boas, David A.
Fonte: Radiological Society of North America, Inc. Publicador: Radiological Society of North America, Inc.
Tipo: Artigo de Revista Científica
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Coregistered functional and structural image overlays demonstrate a significant difference in total hemoglobin concentration contrast between malignant tumors and solid benign lesions.

Development and experimental validation of direct controller tuning for spaceborne telescopes

Mallory, Gregory J. W. (Gregory John Wilmshurst), 1971-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 362 p.; 33168996 bytes; 33168751 bytes; application/pdf; application/pdf
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by Gregory J.W. Mallory.; Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2000.; Includes bibliographical references (p. 285-294).

Children and the changing labour market: joblessness in families with dependent children

Gregory, R.G
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Working/Technical Paper Formato: 92144 bytes; application/pdf
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For many Australians the labour market has become a less friendly place over the last two decades. One source of tension is the loss of full-time jobs. Since August 1975 the full-time employment-population ratio has fallen by 26 per cent among men and increased only one per cent among women. There has, however, been considerable part-time employment growth but not sufficient to offset full-time job losses.

The young have been particularly affected by this job loss and there are numerous studies of teenage unemployment. It is noticeable, however, that less attention has been directed to the impact of inadequate employment growth on families with dependent children.

Our objective in this essay is to move the focus away from measuring child poverty and direct it towards the fundamental labour market and social changes that are generating the rapid growth of government income support for children. The first question is to what extent has inadequate job growth over the last two decades found its way into families with dependent children? This is not a difficult question to answer and we provide the basic facts. Other subsequent questions that might be posed are more difficult. Why has so much joblessness located in families with dependent children...

Sm-Nd and Zircon U-Pb ages from garnet-bearing eclogites, NE Oman: constraints on High-P metamorphism

Gray, D.; Hand, M.; Mawby, J.; Armstrong, R.; Miller, J.; Gregory, R.
Fonte: Elsevier Science BV Publicador: Elsevier Science BV
Tipo: Artigo de Revista Científica
Publicado em //2004 Português
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http://www.elsevier.com/wps/find/journaldescription.cws_home/503328/description#description; David R. Gray, Martin Hand, Jo Mawby, Richard A. Armstrong, John McL. Miller and Robert T. Gregory

Aridity in the monsoon zone as indicated by desert dune formation in the Gregory Lakes basin, northwestern Australia

Fitzsimmons, K.; Miller, G.; Spooner, N.; Magee, J.
Fonte: Taylor & Francis Ltd. Publicador: Taylor & Francis Ltd.
Tipo: Artigo de Revista Científica
Publicado em //2012 Português
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475.2179%
Desert dunes within the monsoon-fed Gregory Lakes basin form valuable archives for Quaternary paleoenvironments, in a region where such records are scarce. Optically stimulated luminescence (OSL) chronologies from two dunes identify the timing of eolian processes, interpreted as a complex response to aridification and increased sediment availability during lake transgressions and associated fluvial activity. The earliest eolian deposition in our record occurred ca 91.5 ka, which postdates the last ‘mega-lake’ phase but predates a smaller lake transgression during early MIS 3. Sand plain accretion took place around ca 47 ka during contemporaneous periodic high lake levels. This was followed by intermittent linear dune building, between ca 35 and 11.5 ka, which most likely took place during an interval of relative aridity. Close spacing of mid-Holocene ages within one dune indicates rapid sediment accumulation in a single arid event ca 5 ka. At no time in the last 50 ka have lake levels reached those of the last ‘mega-lake’ phase prior to ca 91.5 ka, suggesting a substantially weakened present-day monsoon.; K. E. Fitzsimmons, G. H. Miller, N. A. Spooner, and J. W. Magee

Achieving shared situational awareness during steadystate operations in New York state : a model for success

Brunelle, Gregory T.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
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CHDS State/Local; In order to effectively engage in decision making for the safety and well-being of the citizens of New York, the governor and state leaders must have access to real-time, accurate, and comprehensive information. During response operations, the state emergency operations center serves as the focal point for information exchange. During steady-state operations, gaps exist in information sharing, resulting in a fragmented understanding of the operating environment. This lack of a shared situational awareness during steady-state operations requires public-safety leaders to spend time developing a shared situational awareness when an untoward event emerges. This thesis explores the terms situational awareness, shared situational awareness and common operating picture as they apply during steady-state operations. It argues for the importance of shared situational awareness in support of group decision making during the transition from steady-state to response operations, examines existing models of information sharing, and proposes two new models. The thesis concludes that New York State should leverage its Disaster Preparedness Commission interagency coordination architecture to establish a governing body with responsibility for assessing current practices...

Education in Complex Systems for Systems Engineers [Paper and Presentation included] [NDIA 15th Annual Systems Engineering Conference, Paper 14597]

Miller, Gregory A.
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Presentation; Working Paper
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Attached is a paper as well as a presentation - - Note that this presentation came from this conference: 15th ANNUAL SYSTEMS ENGINEERING CONFERENCE, OCTOBER 22 - 25, 2012, SAN DIEGO, CA More information is here: http://www.dtic.mil/ndia/2012system/; This paper explores the potential benefits and disadvantages associated with providing a course (or part of a course) in complex systems as part of a systems engineering graduate degree program. An overview of systems engineering education programs and a history of SE curricular design provides context for this exploration. Curriculums other than systems engineering that include courses in complexity, nonlinear dynamics, emergence, chaos, decentralized synchronization through stigmergy, scale-free networks and related topics are also examined. The application of these concepts to design problems is assessed, particularly for engineers in the defense domain. Complex systems learning objectives tailored for systems engineers are proposed. Finally, a framework on which to base a trade-off analysis to determine if such topics should be included in an existing or developing graduate degree program is recommended.

Awaiting a spark: how three chinese territorial disputes could jeopardize peace in Asia

Chasse, Gregory Allen
Fonte: Monterey, California: Naval Postgraduate School Publicador: Monterey, California: Naval Postgraduate School
Tipo: Tese de Doutorado
Português
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Approved for public release; distribution is unlimited.; The rapid growth and modernization of Chinas economic, political, and military strength over the past two decades has inspired growing acrimony and concern in the United States. Washington strongly desires the continued peace and stability in Asia, and Chinas subsequent rise may eventually threaten American interests in the Pacific. Furthermore, Chinas various territorial disputes could upset regional stability, and as China grows stronger, it may decide to use its increasing military strength to push for resolutions to the disputes in Chinas favor. The question remains: how likely is China to use force to solve its territorial disputes and, should China use force, will the United States ultimately be drawn into the conflict? Case studies that involve three of the most potentially volatile of Chinas territorial disputes in Central Asia, India, and the Diaoyu/Senkaku Islands seem to suggest that war is not inevitable, and that historically China has very rarely gone to war to resolve a territorial dispute. Ultimately, historical analysis suggests that China prefers to maintain its territorial disputes so they can be used in diplomatic negotiations as bargaining pieces, and that China has only gone to war when it has lost all bargaining power. Therefore...

A social network analysis of the Chinese Communist Party's Politburo

Gregory, Leo S.
Fonte: Monterey, California: Naval Postgraduate School Publicador: Monterey, California: Naval Postgraduate School
Tipo: Tese de Doutorado
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Approved for public release; distribution is unlimited.; This thesis combines social network analysis (SNA) with historical case studies and political science research to examine elite Chinese politics in the Chinese Communist Partys Politburo. Specifically, I develop models of the group dynamics based on academic theories using SNA methodologies. These academic theories are founded on analysis of the role of group dynamics within the Politburopolitical factionalism, individual ideology, and institutionalismand they assess how these dynamics are useful in explaining Politburo behavior. After developing models of the theories, I created an SNA observation of the current Politburo and then compared that network with these models in order to test which theory provides the best explanation or closest fit. My analysis suggests that a combination of institutionalism and personal ideology, as exemplified by the core leader dynamic, best explains current Politburo behavior.; Major, United States Marine Corps

Aridity in the monsoon zone as indicated by desert dune formation in the Gregory Lakes basin, northwestern Australia

Fitzsimmons, K E; Miller, Gifford Hubbs; Spooner, N.A.; Magee, John
Fonte: Blackwell Publishing Ltd Publicador: Blackwell Publishing Ltd
Tipo: Artigo de Revista Científica
Português
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360.72145%
Desert dunes within the monsoon-fed Gregory Lakes basin form valuable archives for Quaternary paleoenvironments, in a region where such records are scarce. Optically stimulated luminescence (OSL) chronologies from two dunes identify the timing of eolian p

Landau-Siegel Zeroes and Black Hole Entropy

Miller, Stephen D.; Moore, Gregory
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
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There has been some speculation about relations of D-brane models of black holes to arithmetic. In this note we point out that some of these speculations have implications for a circle of questions related to the generalized Riemann hypothesis on the zeroes of Dirichlet $L$-functions.; Comment: 30 pp. harvmac (b), 1 figure. V2: Statement of Theorem 4.1 corrected. Some clarifications. One reference added. v3: New appendix, by S.D. Miller, gives proof of Theorem 4.1

What We Owe the Global Poor: In Defense of a Moderate Principle of Sacrifice

Robson, Gregory J.
Fonte: Universidade Duke Publicador: Universidade Duke
Tipo: Tese de Doutorado
Publicado em //2012 Português
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Peter Singer's 1971 essay "Famine, Affluence, and Morality" sparked a surge in interest among philosophers in the beneficent obligations of the global rich to assist the global poor. Richard Miller, a prominent recent critic of Singer, has argued that Singer's position is too demanding and proposed the Principle of Sympathy as an alternative to Singer's Principle of Sacrifice. I argue against Miller's view and highlight problematic features of his "daughter's aesthetic sense" example and his "closeness-to-heart" criterion. After critically examining Miller's and Singer's alternative accounts, I argue for a substantially revised version of Singer's position. The Moderate Principle of Sacrifice (MPS) that I propose includes four revisions to Singer's account. These revisions allow it more plausibly to capture our beneficent obligations to assist the global poor.

; Thesis

Reporter; RIT Reporter; Reporter Magazine

Gregory, David; O'Rourke, Hal; Cayley, M.; Conklin, Al
Fonte: Rochester Institute of Technology Publicador: Rochester Institute of Technology
Tipo: Magazine
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Reporter Staff to Hold Election Night Party (p. 2); WHAM to Bring the Glenn Miller Orchestra to City (p. 2); RIT Co-eds Organize Gamma Sigma Sigma (p. 2); Sally Green Reigns over RIT Homecoming (p. 2); Institute Enrollment Totals 2454 Day Pupils (p. 2); ‘Operation Spirit’ Initiated Campaign Last Weekend (p. 2); Discussion Planned on College Teaching (p. 2); ‘Comment’ (p. 3); Letters to the Editor (p. 3); Editorials (p. 3); Cayley’s Corner (p. 3); J.F.C. Greek Talk (p. 3); ASTME to Tour Farrel (p. 3); Students Sound Off On Platforms of Candidates (p. 4); Miller Visits Rochester; Whistlestops Thru State (p. 5); Senator Humphrey Delivers Speech at War Memorial (p. 5); Spring Vacation Proposed; Cigarette Issue Rises Again (p. 5); Play Proves Success; Acting Termed Fine (p. 5); Sigma PI’s Fall Weekend Premieres Next Friday (p. 5); NRH 8th Floor Wins Skits-o-Froshia Contest (p. 7); ‘Operation Spirit RIT’ Launched At Lettermen’s Kickoff Banquet (p. 6); President Reports Institute’s Growth (p. 6); U.S. Coast Guard Offers Fulfillment of Military Duty (p. 6); Business College Promotes Green (p. 6); Britisher Visits Institute Observes School of Printing (p. 6); Talisman to Show Halloween Thriller (p. 7); Greeks Meet Freshmen (p. 7); Educational Film Will Feature ‘The City’ (p. 7); Deadline Is Set For Symposium (p. 7); Bible Study on Personal Level Stressed by IVCF (p. 7); Choraliers under New Director; To ‘Really Make Some Noise’ (p. 7); Pitchmen Win Two; Trounce Utica 9-0 (p. 8); Tiger Tracks (p. 8); Harriers Drop Meet to RW (p. 8); Smith Attends ACU Meeting (p. 8); RIT Reporter...

Reporter; RIT Reporter; Reporter Magazine

Gregory, David; Cayley, M.; Conklin, Al
Fonte: Rochester Institute of Technology Publicador: Rochester Institute of Technology
Tipo: Newspaper
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Vacation Plan Vetoed; Ring Proposal Passed (p. 1); SCF to Study Rochester Riots At Next Meeting (p. 1); Glenn Miller Orchestra To Play for Dance Wednesday Evening (p. 1); Rochester Philharmonic Tickets Available (p. 1); Rochester Philharmonic Tickets Available (p. 1); New School Colors (p. 1); Johnson Wins Mock Election (p. 1); Students Watch Johnson Win At 'Reporter' Election Party (p. 1); Perkins Hall Residents Granted Student Bus Fare (p. 1); Editorials: Excellent, But More (p. 2); We Question Your Maturity (p. 2); Letters to the Editor (p. 2); ‘Comment’ (p. 2); Cayley’s Corner (p. 2); Boroff First Speaker For Faculty Series (p. 3); Film on City Shown by EFP (p. 3); Many Take Placement Tests As Peace Corps Visits RIT (p. 3); 160 High School Debaters To Orate Here Saturday (p. 3); News from Institute Alumni (p. 6); Turner, Collister Cited As Outstanding Graduates (p. 6); Alumni Past Presidents Form Advisory Group (p. 6); Varsity Soccer Adds Two More Wins To Streak (p. 7); Athlete of the Week (p. 7); Tiger Tracks (p. 7); Ski Club Holds Social Function (p. 7); Cross Country Runners Routed (p. 7); RIT Reporter, Rochester Institute of Technology. Editor-in-chief, Willis Barley. Managing Editor, Anthony R. Puskarz, Jr. Associate Editor: Gary A. Ludwick. Feature Editor: Donna M. Brown. Production Manager: Fred Ellsmore. Photo Editor: Steve Eisenberg. Photo Associate: Steven I. Barish. Special Projects: Ronald Sokolowaki. Art Editor: Bill Marx. Copy Editor: Robert Frank. Copy Associate: Jim Withham. News Editor: Earle A. Woottoo. Circulation Manger: Jay Lichty. Sports Editor: Nick Cerchio. Advertising Manager: Wayne Dingerson. Advertising Associate: Chris Hoagland. Advertising Associate: Jim Kohler. Staff Reporters: Craig Babcock...

Reporter; RIT Reporter; Reporter Magazine

Tuttle, David; Gregory, David; Antos, Ron; McDonald, Bill; Zygmunt, Selina; Castor, Jim
Fonte: Rochester Institute of Technology Publicador: Rochester Institute of Technology
Tipo: Magazine
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Institute given grant for anti-poverty work (p. 1); Students to rally support for U.S. policy in Viet Nam (p. 1); Hargrave named to Board of Trustees (p. 1); Upperclass students to be given choice of General Studies courses (p. 1); Faculty and students attend Thanksgiving assembly (p. 1); Campus Christmas’ planned Dec. 7 by men’s residence halls (p. 1); Pi Club members visit Hammermill Paper Co. (p. 1); Humphries, Eltscher attending UN session (p. 1); RIT selected to initiate program of photographic science scholarships (p. 1); RIT selected to initiate program of photographic science scholarships (p. 1); Editorials (p. 2); ‘Comment’ (p. 2); Stop the clock (p. 2); Letters to the editor (p. 3); Donbald G. Bujnowski exhibits art works (p. 3); APO collects toys and eyeglasses (p. 3); ‘Scandinavian Seminar’ accepting applications (p. 3); ‘Scandinavian Seminar’ accepting applications (p. 3); Strong political overtones highlight art now on display (p. 4); Meyer completes sculpture of Astaire for Lincoln Center (p. 5); Katherine Hartfelder named to co-ordinate retail seminar (p. 5); Forty Tau Epsilon Phi members travel 400 miles to New York for a ‘snack’ (p. 5); Jobs in Europe now available to students (p. 5); Scholarship established for students in area of Food Administration (p. 5); 250 co-eds attend NYSIAWS meeting (p. 5); Tiger Tracks (p. 6); Tigers open basketball season tonight with action in invitational tourney (p. 6); Wrestling team earns tie in season opener (p. 6); Thompson...

A GIS-based reconstruction of late Quaternary paleohydrology: Lake Eyre, arid central Australia

DeVogel, Stephen; Magee, John; Manley, William F; Miller, Gifford Hubbs
Fonte: Elsevier Publicador: Elsevier
Tipo: Artigo de Revista Científica
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Lake Eyre is the terminal playa in a large closed basin which receives the majority of its moisture from the summer monsoon. Modern Lake Eyre receives intermittent floodings at times of increased monsoon intensity, generally associated with the La Niña p