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Articles 1 - 19 of 19

Full-Text Articles in Physical Sciences and Mathematics

Wavelet-Based Functional Mixed Models To Characterize Population Heterogeneity In Accelerometer Profiles: A Case Study. , Jeffrey S. Morris, Cassandra Arroyo, Brent A. Coull, Louise M. Ryan, Steven L. Gortmaker Dec 2006

Wavelet-Based Functional Mixed Models To Characterize Population Heterogeneity In Accelerometer Profiles: A Case Study. , Jeffrey S. Morris, Cassandra Arroyo, Brent A. Coull, Louise M. Ryan, Steven L. Gortmaker

Jeffrey S. Morris

We present a case study illustrating the challenges of analyzing accelerometer data taken from a sample of children participating in an intervention study designed to increase physical activity. An accelerometer is a small device worn on the hip that records the minute-by-minute activity levels of the child throughout the day for each day it is worn. The resulting data are irregular functions characterized by many peaks representing short bursts of intense activity. We model these data using the wavelet-based functional mixed model. This approach incorporates multiple fixed effects and random effect functions of arbitrary form, the estimates of which are …


Bear River Watershed Historical Digital Collection, Cheryl D. Walters, Steve Sturgeon Nov 2006

Bear River Watershed Historical Digital Collection, Cheryl D. Walters, Steve Sturgeon

Cheryl D. Walters

This presentation to the Bear River Water Commission introduced a new digital collection of images and text resources about the Bear River Watershed in Utah and Idaho.


Grundlagen Der Kognition Und Perzeption Für Die Software-Ergonomie, Philipp Schaer, Holger Heuser Nov 2006

Grundlagen Der Kognition Und Perzeption Für Die Software-Ergonomie, Philipp Schaer, Holger Heuser

Philipp Schaer

Der folgende Arbeitsbericht soll eine kurze Zusammenfassung über die perzeptorischen und kognitiven Fähigkeiten des Menschen geben. Diese Zusammenfassung ist weit davon entfernt, umfassend zu sein. Jedoch bietet sie die Möglichkeit für Informatiker und Computervisualisten, einen kurzen Einblick in kognitionspsychologische Modelle zu gewinnen.


Towards A New Taxation System For Motor Vehicles, Theodoros Zachariadis Nov 2006

Towards A New Taxation System For Motor Vehicles, Theodoros Zachariadis

Theodoros Zachariadis

No abstract provided.


Clir Forms Advisory Committee For Scholarly Communication Report, Ann Okerson, Gordon C. Tibbitts Apr 2006

Clir Forms Advisory Committee For Scholarly Communication Report, Ann Okerson, Gordon C. Tibbitts

Gordon C. Tibbitts III

In January 2006 CLIR (the Council on Library and Information Resources) formed a committee of advisors to develop strategically directed scholarly communication and preservation agendas that would appeal to and create value for CLIR constituents and the broader communities of stakeholders whose existence is entwined with these two topics. This report represents the findings as presented by Ann Okerson (the committee leader) and the committee findings between mid-January and late March 2006, identifying possible directions and studies to be pursued in CLIR's scholarly communication programs over the next three years.


Globalization & Nationalism: A Recipe For Terror, Cari Bourette, Daniel Reader Mar 2006

Globalization & Nationalism: A Recipe For Terror, Cari Bourette, Daniel Reader

Cari Bourette

Nationalism appears to be part of the human condition; it may well be related to the human tendency toward tribalism. Whatever the case, nationalism appears to be a permanent feature on the global landscape. Globalization, while not a new phenomenon by any means, seems to be having a tremendous dilutory effect on the sovereignty of states; it now appears to be carrying the assault to the cultural frontiers of nationalism. Unlike the Westphalian constructs, however, nations will not so easily succumb. There is a greater inherent resistance to change in nations; the only historically effective method has been outright eradication …


Economic And Energy Aspects Of Motor Vehicle Taxation, Theodoros Zachariadis, Nadia Nicolaidou Mar 2006

Economic And Energy Aspects Of Motor Vehicle Taxation, Theodoros Zachariadis, Nadia Nicolaidou

Theodoros Zachariadis

No abstract provided.


The "Duty" To Be A Rational Shareholder, David A. Hoffman Feb 2006

The "Duty" To Be A Rational Shareholder, David A. Hoffman

David A Hoffman

How and when do courts determine that corporate disclosures are actionable under the federal securities laws? The applicable standard is materiality: would a (mythical) reasonable investor have considered a given disclosure important. As I establish through empirical and statistical testing of approximately 500 cases analyzing the materiality standard, judicial findings of immateriality are remarkably common, and have been stable over time. Materiality's scope results in the dismissal of a large number of claims, and creates a set of cases in which courts attempt to explain and defend their vision of who is, and is not, a reasonable investor. Thus, materiality …


Place-Valued Logics Around Cybernetic Ontology, The Bcl And Afosr, Rudolf Kaehr Jan 2006

Place-Valued Logics Around Cybernetic Ontology, The Bcl And Afosr, Rudolf Kaehr

Rudolf Kaehr

No abstract provided.


From Ruby To Rudy, Rudolf Kaehr Jan 2006

From Ruby To Rudy, Rudolf Kaehr

Rudolf Kaehr

No abstract provided.


The Chinese Challenge. Hallucinations For Other Futures, Rudolf Kaehr Jan 2006

The Chinese Challenge. Hallucinations For Other Futures, Rudolf Kaehr

Rudolf Kaehr

The main question is: What can we learn from China that China is not teaching us? It is proposed that a study of polycontextural logic and morphogrammatics could be helpful to discover this new kind of rationality.


The Night Of October 2, 1984, Donald G. Laird Jan 2006

The Night Of October 2, 1984, Donald G. Laird

Dr. David Morgan Lochhead

October 2, 1984 David Lochhead made an address on the occasion of his becoming Full Professor of Theology at the Vancouver School of Theology. He entitled his address: Theology in a Digital World. This was four years before it became available in print.


Exodus From Eden: Comprehending Our Creation In An Un/Real World, Curtis Ackley Jan 2006

Exodus From Eden: Comprehending Our Creation In An Un/Real World, Curtis Ackley

Dr. David Morgan Lochhead

Rev. Curis S. Ackey. Keynote Address Presented October 14, 2006 at the David Lochhead Memorial Symposium Virtual Un/Reality: The Spirituality of Cyberspace Copyright © 2006 by Curtis S. Ackley


Getting Real In Virtual Reality, Debbie Herring Jan 2006

Getting Real In Virtual Reality, Debbie Herring

Dr. David Morgan Lochhead

Address of Dr. Debbie Herring at the David Lochhead Memorial Symposium, October 14-16, 2006. Dr. Herring is A Senior Lecturer at the Urban Theology Unit of the Sheffield University Biblical Studies Department.


Investigating Omitted Variable Bias In Regression Parameter Estimation: A Genetic Algorithm Approach, Lonnie K. Stevans, David N. Sessions Jan 2006

Investigating Omitted Variable Bias In Regression Parameter Estimation: A Genetic Algorithm Approach, Lonnie K. Stevans, David N. Sessions

Lonnie K. Stevans

Bias in regression estimates resulting from the omission of a correlated relevant variable is a well known phenomenon. In this study, we apply a genetic algorithm to estimate the missing variable and, using that estimated variable, demonstrate that significant bias in regression estimates can be substantially corrected with relatively high confidence in effective models. Our interest is restricted to the case of a missing binary indicator variable and the analytical properties of bias and MSE dominance of the resulting dependent error generated vector process. These findings are compared to prior results for the independent error proxy process. Simulations are run …


Dewey: The First Ghost-Buster?, Leslie Marsh Jan 2006

Dewey: The First Ghost-Buster?, Leslie Marsh

Leslie Marsh

Ghost-busting, or less colloquially, anti-Cartesianism or non-representationalism, is a loose and internally fluid coalition (philosophical and empirical) comprising Dynamical, Embodied, Extended, Distributed, and Situated (DEEDS) theories of cognition. Gilbert Ryle – DEEDS’ anglophonic masthead [1] – supposedly exorcised the Cartesian propensity to postulate mind as an apparition-like entity somehow situated in the body. Ryle’s behaviouristic recommendation was, that just as we don’t see the wind blowing but only see the trees waving, so too should we conceive intelligence as manifest though action. The Cartesian ghost of old has mutated, taking the form of the ‘Machine in the Machine’, the brain …


On The Robustness Of Robustness Checks Of The Environmental Kuznets Curve, Marzio Galeotti, Matteo Manera, Alessandro Lanza Jan 2006

On The Robustness Of Robustness Checks Of The Environmental Kuznets Curve, Marzio Galeotti, Matteo Manera, Alessandro Lanza

Matteo Manera

Since its first inception in the debate on the relationship between environment and growth in 1992, the Environmental Kuznets Curve has been subject of continuous and intense scrutiny. The literature can be roughly divided in two historical phases. Initially, after the seminal contributions, additional work aimed to extend the investigation to new pollutants and to verify the existence of an inverted-U shape as well as assessing the value of the turning point. The following phase focused instead on the robustness of the empirical relationship, particularly with respect to the omission of relevant explanatory variables other than GDP, alternative datasets, functional …


The Asymmetric Effects Of Oil Shocks On Output Growth: A Markov-Switching Analysis For The G-7 Countries, Alessandro Cologni, Matteo Manera Jan 2006

The Asymmetric Effects Of Oil Shocks On Output Growth: A Markov-Switching Analysis For The G-7 Countries, Alessandro Cologni, Matteo Manera

Matteo Manera

In this paper we specify and estimate different Markov-switching (MS) regime autoregressive models. The empirical performance of the univariate MS models used to describe the switches between different economic regimes for the G-7 countries is in general not satisfactory. We extend these models to verify if the inclusion of asymmetric oil shocks as an exogenous variable improves the ability of each specification to identify the different phases of the business cycle for each country under scrutiny. Following the wide literature on this topic, we have considered six different definitions of oil shocks: oil price changes, asymmetric transformations of oil price …


The Role Of Connective Tissue Growth Factor In Skeletal Growth And Development, Philadelphia University Jan 2006

The Role Of Connective Tissue Growth Factor In Skeletal Growth And Development, Philadelphia University

Philadelphia University, Jordan

No abstract provided.