Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

204,821 Full-Text Articles 249,638 Authors 47,230,550 Downloads 403 Institutions

All Articles in Physical Sciences and Mathematics

Faceted Search

204,821 full-text articles. Page 5616 of 5616.

Semiparametric Analysis Of Recurrent Events: Artificial Censoring, Truncation, Pairwise Estimation And Inference, Debashis Ghosh 2009 Penn State University

Semiparametric Analysis Of Recurrent Events: Artificial Censoring, Truncation, Pairwise Estimation And Inference, Debashis Ghosh

Debashis Ghosh

The analysis of recurrent failure time data from longitudinal studies can be complicated by the presence of dependent censoring. There has been a substantive literature that has developed based on an artificial censoring device. We explore in this article the connection between this class of methods with truncated data structures. In addition, a new procedure is developed for estimation and inference in a joint model for recurrent events and dependent censoring. Estimation proceeds using a mixed U-statistic based estimating function approach. New resampling-based methods for variance estimation and model checking are also described. The methods are illustrated by application to ...


Ru(Iii), Pd(Ii), Pt(Iii) And Pt(Iv) Complexes Of A Novel 32-Membered Unsymmetrical Macrocyclic Ligand, Mohammad Mansoob Khan Dr 2009 Universiti Brunei Darussalaam

Ru(Iii), Pd(Ii), Pt(Iii) And Pt(Iv) Complexes Of A Novel 32-Membered Unsymmetrical Macrocyclic Ligand, Mohammad Mansoob Khan Dr

Dr. Mohammad Mansoob Khan

Reactions of [N12] macrocyclic ligand, L·2HClO4, with RuCl3, PdCl2, K2[PtCl6], [K2PtCl4] as well as [M(Ph3P)2Cl2] (M = Pd or Pt), and [Ru(Ph3P)3Cl2] produces bimetallic complexes whose analytical data are consistent with the molecular formulae as Ru2LCl4(ClO4)2 (I), Pd2LCl2(ClO4)2 (II), Pt2LCl6(ClO4)2 (III), Pt2LCl2(ClO4)2 (IV) and Ru2LCl2(ClO4)2 (V). Reactions of the ligand with the precursors [M(Ph3P)2Cl2] (M = Pd or Pt), and [Ru(Ph3P)3Cl2], has released all the Ph3P ancillary ligand in solution. Magnetic moment, IR and UV-visible spectroscopic data confirms the encapsulation of metal ...


Diagnosing Intermittent And Persistent Faults Using Static Bayesian Networks, Ole J. Mengshoel, Brian Ricks 2009 Carnegie Mellon University

Diagnosing Intermittent And Persistent Faults Using Static Bayesian Networks, Ole J. Mengshoel, Brian Ricks

Ole J Mengshoel

Both intermittent and persistent faults may occur in a wide range of systems. We present in this paper the introduction of intermittent fault handling techniques into ProDiagnose, an algorithm that previously only handled persistent faults. We discuss novel algorithmic techniques as well as how our static Bayesian networks help diagnose, in an integrated manner, a range of intermittent and persistent faults. Through experiments with data from the ADAPT electrical power system test bed, generated as part of the Second International Diagnostic Competition (DXC-10), we show that this novel variant of ProDiagnose diagnoses intermittent faults accurately and quickly, while maintaining strong ...


Learning Class-Specific Image Transformations With Higher-Order Boltzmann Machines, Erik G. Learned-Miller, Gary Huang 2009 University of Massachusetts - Amherst

Learning Class-Specific Image Transformations With Higher-Order Boltzmann Machines, Erik G. Learned-Miller, Gary Huang

Erik G Learned-Miller

In this paper, we examine the problem of learning a rep- resentation of image transformations specific to a complex object class, such as faces. Learning such a representation for a specific object class would allow us to perform im- proved, pose-invariant visual verification, such as uncon- strained face verification. We build off of the method of using factored higher-order Boltzmann machines to model such image transformations. Using this approach will po- tentially enable us to use the model as one component of a larger deep architecture. This will allow us to use the fea- ture information in an ordinary deep ...


Revelations Of Adaptive Technology Hiding In Your Operating System, Kathleen P. King 2009 University of South Florida

Revelations Of Adaptive Technology Hiding In Your Operating System, Kathleen P. King

Kathleen P King

Pre-publication version of a chapter about the assistive technology tools and resources available for free in Windows OS and Mac OS. Introducing higher education faculty to free resources, features and programs which they can recommend to their students or perhaps use for themselves (for instance for fading eyesight or hearing). In addition, the chapter briefly shares strategies and examples of how they might be used. The book will have an entire chapter dedicated to assistive technology as well. This is a popularized assistive technology chapter for generalist, NON special education, faculty to become acquainted with readily available and free resources ...


Fast Function-On-Scalar Regression With Penalized Basis Expansions, Philip T. Reiss, Lei Huang, Maarten Mennes 2009 New York University

Fast Function-On-Scalar Regression With Penalized Basis Expansions, Philip T. Reiss, Lei Huang, Maarten Mennes

Philip T. Reiss

Regression models for functional responses and scalar predictors are often fitted by means of basis functions, with quadratic roughness penalties applied to avoid overfitting. The fitting approach described by Ramsay and Silverman in the 1990s amounts to a penalized ordinary least squares (P-OLS) estimator of the coefficient functions. We recast this estimator as a generalized ridge regression estimator, and present a penalized generalized least squares (P-GLS) alternative. We describe algorithms by which both estimators can be implemented, with automatic selection of optimal smoothing parameters, in a more computationally efficient manner than has heretofore been available. We discuss pointwise confidence intervals ...


A Neurosemantic Theory Of Concrete Noun Representation Based On The Underlying Brain Codes, Marcel Adam Just, Vladimir L. Cherkassky, Sandesh Aryal, Tom M. Mitchell 2009 Carnegie Mellon University

A Neurosemantic Theory Of Concrete Noun Representation Based On The Underlying Brain Codes, Marcel Adam Just, Vladimir L. Cherkassky, Sandesh Aryal, Tom M. Mitchell

Marcel Adam Just

No abstract provided.


A Sketch-Based Language For Representing Uncertainty In The Locations Of Origin Of Herbarium Specimens, Barry J. Kronenfeld, Andrew Weeks 2009 Eastern Illinois University

A Sketch-Based Language For Representing Uncertainty In The Locations Of Origin Of Herbarium Specimens, Barry J. Kronenfeld, Andrew Weeks

Barry J. Kronenfeld

Uncertainty fields have been suggested as an appropriate model for retrospective georeferencing of herbarium specimens. Previous work has focused only on automated data capture methods, but techniques for manual data specification may be able to harness human spatial cognition skills to quickly interpret complex spatial propositions. This paper develops a formal modeling language by which location uncertainty fields can be derived from manually sketched features. The language consists of low-level specification of critical probability isolines from which a surface can be uniquely derived, and high-level specification of features and predicates from which low-level isolines can be derived. In a case ...


Lattice Thermal Conductivity Of Freestanding Gallium Nitride Nanowires, Jie Zou 2009 Eastern Illinois University

Lattice Thermal Conductivity Of Freestanding Gallium Nitride Nanowires, Jie Zou

Jie Zou

aip Publishers Publications Topics | Librarians Authors Your access is provided by: Eastern Illinois University Register to create your user account, or sign in if you have an existing account Additional sign in Sign in via Shibboleth/Athens My cart Export citations Add to my favorites Recommend to library Subscribe to email alerts Submit an article Reprints & Permissions Subscribe to RSS Access Key Free Content Open Access Content Subscribed Content Free Trial Content Home > Publishers > AIP Publishing > Journal of Applied Physics > Volume 108, Issue 3 > Article banner image F Lattice thermal conductivity of freestanding gallium nitride nanowires Download PDF Jie Zou1 ...


Mining And Civilization, An Illustrated History, Fathi Habashi 2009 Laval University, Quebec City, Canada

Mining And Civilization, An Illustrated History, Fathi Habashi

Fathi Habashi

Mining and Civilization has been conceived to compliment the author's two books History of Metallurgy and Readings in Historical Metallurgy and to fill a gap in the literature. It is difficult to study the history of metallurgy without studying the history of mining at the same time. Each time the author visits ancient ruins or examines an ancient stone statue he recalls the work of miners who brought the material from a quarry so that the sculptor can create a work of art. History of mining, quarrying, and stone carving is history of civilization.


Mass Media Coverage Of Global Warming: An Update., John Fisher 2009 Utah Valley University

Mass Media Coverage Of Global Warming: An Update., John Fisher

Dr. John R. Fisher

A consensus may no longer exist about the causes of climate change. Only last year most media and many people supported the view that climate change was caused by people’s use of fossil fuels. However, the public view of global warming appears to have changed. Much of this change in people’s attitudes came from media coverage. This was augmented by concern for the economy and the effect of global warming legislation on the economy.

While few studies exist of mass media saturation using the diffusion of innovation model, research of global warming coverage by Dispensa and Brulle (2003 ...


Quaternary Geology And Geochronology Of The Uppermost Arkansas Valley, Colorado- Glaciers, Ice Dams, Landslides, And Floods, James P. McCalpin 2009 GEO-HAZ Consulting

Quaternary Geology And Geochronology Of The Uppermost Arkansas Valley, Colorado- Glaciers, Ice Dams, Landslides, And Floods, James P. Mccalpin

James P. McCalpin

This field trip to the uppermost Arkansas Valley of central Colorado is based mainly on work performed since 2008, in an area with a long history of bedrock mapping by renowned geologists of the U.S. Geological Survey beginning in the 1880s (e.g. Emmons, 1886). The Quaternary features of the region were first described by Capps in 1909. Despite over 100 years of intermittent geologic studies here, there were still new discoveries to be made in the past few years. Day 1 of the trip emphasizes landslides (in the morning) and glacial deposits (in the afternoon). The “take-home messages ...


An Interview With Edsger W. Dijkstra, Thomas J. Misa, Philip L. Frana 2009 James Madison University

An Interview With Edsger W. Dijkstra, Thomas J. Misa, Philip L. Frana

Philip L Frana

No abstract provided.


Patent Reforms Must Focus On The U.S. Patent Office, Ron D. Katznelson 2009 Bi-Level Technologies

Patent Reforms Must Focus On The U.S. Patent Office, Ron D. Katznelson

Ron D. Katznelson

No abstract provided.


Digital Commons powered by bepress