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2010

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Articles 5461 - 5490 of 8625

Full-Text Articles in Physical Sciences and Mathematics

The Evolution And Discovery Of The Species Of Equality In Euclid’S Elements, Lee T. Nutini Jan 2010

The Evolution And Discovery Of The Species Of Equality In Euclid’S Elements, Lee T. Nutini

Lee T Nutini

A look at the evidence for an additional and novel type of equality found in Euclid's Elements.

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Comparison Of Different Aproaches To Extract Heterogeneous Objects From An Image Using An Orchards Example, Przemysław Kupidura, Gwadera Łukasz Jan 2010

Comparison Of Different Aproaches To Extract Heterogeneous Objects From An Image Using An Orchards Example, Przemysław Kupidura, Gwadera Łukasz

Przemysław Kupidura

Traditional, pixel-based classification is very often an useless tool for an automatic extraction of heterogeneous types of land cover. This paper presents the application of mathematical morphology for a semi-automatic extraction of heterogenous objects using an example of orchards. Thanks to this algorithm it is possible to obtain orchards pixels of unique set of digital numbers, allowing succesful application of a traditional pixel-based classification for extraction of this class.The algorithm concerning a sequence of morphological operations of multispectral satellite images of very high resolution (VHR) is then veryfied on test images. The paper concerns also a comparison of an efficiency …

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Semi-Automatic Method For A Built-Up Area Intensity Survey Using Morphological Granulometry, Przemysław Kupidura Jan 2010

Semi-Automatic Method For A Built-Up Area Intensity Survey Using Morphological Granulometry, Przemysław Kupidura

Przemysław Kupidura

Built-up areas as a land-use type are easy to extract in a visual photo-interpretation process, however their heterogeneous character makes theirs automatic or semi-automatic extraction very complicated, even impossible using non-contextual, pixel-based methods of image classification. This paper concerns the application of the semi-automatic method of the extraction of built-up areas in satellite images. Granulometric maps, a mathematical morphology operator is used as a main tool for surveying a heterogeneity of particular parts of an aerial or satellite image. This function measures amount and size of objects in the determined neighborhood of each pixel of an image. Pixels representing built-up …

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Solving Fuzzy Differential Inclusions Using The Lu-Representation Of Fuzzy Numbers, Saeid Abbasbandy, A. Panahi, H. Rouhparvar Jan 2010

Solving Fuzzy Differential Inclusions Using The Lu-Representation Of Fuzzy Numbers, Saeid Abbasbandy, A. Panahi, H. Rouhparvar

Saeid Abbasbandy

In this paper, the solution of fuzzy differential inclusions with lower-upper representation is established.

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Discovery Of A New Element Or New Element Groups And Associated Dangers And Risks, After The Trans Uranium And Uranium Investigations .Why Some Elements Or Element Groups May Be Left As Art, Drawings Or Ideas To Limit Radiation Exposure Risks And Also To Avoid Legal Problems Related To Toxicity, James T. Struck Jan 2010

Discovery Of A New Element Or New Element Groups And Associated Dangers And Risks, After The Trans Uranium And Uranium Investigations .Why Some Elements Or Element Groups May Be Left As Art, Drawings Or Ideas To Limit Radiation Exposure Risks And Also To Avoid Legal Problems Related To Toxicity, James T. Struck

James T Struck

A new element or element group could be described consisting of parts of neutrons and parts of protons. We can draw exotic and new elements without producing them. When someone produces this new element group of combinations of parts of protons and parts of neutrons, we can understand that there will be associated health risks that can be avoided through discussion of these risks. Because radiation is discriminated against with denial of rights by some organizations, the elements are more safely not produced to avoid associated discrimination such as denial of phone, visitation, fresh air, consent, chemicals used, religious services, …

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A Dynamic Information Generation Approach For He: Ig3 Characteristics, Jeffrey Barker, K. Sabry Jan 2010

A Dynamic Information Generation Approach For He: Ig3 Characteristics, Jeffrey Barker, K. Sabry

Jeffrey Barker

This paper proposes the integration of Information Generation 3 (IG3) principles to education systems to advance curriculum and instruction from traditional static designs to build dynamic learning communities and courses in higher education. Dynamic information should stimulate and support methodological flexibility for converging learner-centred and knowledge-centred education environments. This convergence is achieved through a complex mix of connected digital devices and pedagogical methods proven effective by any number of learning theories. Flexibility and diversity are important principles in the IG3 approach to permit the application of multiple scalable digital communication tools, teaching methods and decision-making to advance this new direction. …

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Sketch Of A Typology Of Abstract Memristic Machines, Rudolf Kaehr Jan 2010

Sketch Of A Typology Of Abstract Memristic Machines, Rudolf Kaehr

Rudolf Kaehr

A typology of memristic machines is sketched. This sketch gives an overview and orientation to the paper “Towards Abstract Memristic Machines”. It also intents to propose a concise systematization of the newly introduced terms and strategies to memristics and morphogrammatics. This sketch is introducing four types of sign-use for four types of machines of fundamentally different paradigms: 1. semiotic, 2. monomorphic, 3. polymorphic and 4. bisimilar abstract machines. Further definitions of abstract machines have to be based on those graphematic notational systems. A realization of such constructions of abstract machines, in contrast to existing abstract machines of the theory of …

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Towards Abstract Memristic Machines, Rudolf Kaehr Jan 2010

Towards Abstract Memristic Machines, Rudolf Kaehr

Rudolf Kaehr

No abstract provided.

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From Universe To Polyverses, Rudolf Kaehr Jan 2010

From Universe To Polyverses, Rudolf Kaehr

Rudolf Kaehr

Some thoughts about the power of speculation behind important discoveries in mathematics, physics and computer science. The exercise shows that there is no need for a compulsory ultimate unifying universe. It is speculated that just this paradigm of a single ultimate universe is unmasking itself today as the main obstacle for further development in Western science and technology.

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Morphogrammatics For Dummies: The Domino Approach, Rudolf Kaehr Jan 2010

Morphogrammatics For Dummies: The Domino Approach, Rudolf Kaehr

Rudolf Kaehr

Dominoes, morphograms, cellular automata, memristics. Topics: possible continuation, coalitions, cooperations, substitution, morphic bisimilarity.

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International Diversification: A Copula Approach, Lorán Chollete, Victor De La Pena, Ching-Chih Lu Jan 2010

International Diversification: A Copula Approach, Lorán Chollete, Victor De La Pena, Ching-Chih Lu

Lorán Chollete

No abstract provided.

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Bayesian Models And Decision Algorithms For Complex Early Phase Clinical Trials, Peter F. Thall Jan 2010

Bayesian Models And Decision Algorithms For Complex Early Phase Clinical Trials, Peter F. Thall

Peter F. Thall

No abstract provided.

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Local Fractional Fourier’S Transform Based On The Local Fractional Calculus, Yang Xiao-Jun Jan 2010

Local Fractional Fourier’S Transform Based On The Local Fractional Calculus, Yang Xiao-Jun

Xiao-Jun Yang

A new modeling for the local fractional Fourier’s transform containing the local fractional calculus is investigated in fractional space. The properties of the local fractional Fourier’s transform are obtained and two examples for the local fractional systems are investigated in detail.

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Exact Three-Wave Solutions For High Nonlinear Form Of Benjamin-Bona-Mahony-Burgers Equations, Mohammad Taghi Darvishi, Mohammad Najafi M.Najafi, Maliheh Najafi Jan 2010

Exact Three-Wave Solutions For High Nonlinear Form Of Benjamin-Bona-Mahony-Burgers Equations, Mohammad Taghi Darvishi, Mohammad Najafi M.Najafi, Maliheh Najafi

mohammad najafi

By means of the idea of three-wave method, we obtain some analytic solutions for high nonlinear form of Benjamin-Bona-Mahony-Burgers (shortly BBMB) equations in its bilinear form.

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Wavelet-Based Functional Linear Mixed Models: An Application To Measurement Error–Corrected Distributed Lag Models, Elizabeth J. Malloy, Jeffrey S. Morris, Sara D. Adar, Helen Suh, Diane R. Gold, Brent A. Coull Jan 2010

Wavelet-Based Functional Linear Mixed Models: An Application To Measurement Error–Corrected Distributed Lag Models, Elizabeth J. Malloy, Jeffrey S. Morris, Sara D. Adar, Helen Suh, Diane R. Gold, Brent A. Coull

Jeffrey S. Morris

Frequently, exposure data are measured over time on a grid of discrete values that collectively define a functional observation. In many applications, researchers are interested in using these measurements as covariates to predict a scalar response in a regression setting, with interest focusing on the most biologically relevant time window of exposure. One example is in panel studies of the health effects of particulate matter (PM), where particle levels are measured over time. In such studies, there are many more values of the functional data than observations in the data set so that regularization of the corresponding functional regression coefficient …

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Members’ Discoveries: Fatal Flaws In Cancer Research, Jeffrey S. Morris Jan 2010

Members’ Discoveries: Fatal Flaws In Cancer Research, Jeffrey S. Morris

Jeffrey S. Morris

A recent article published in The Annals of Applied Statistics (AOAS) by two MD Anderson researchers—Keith Baggerly and Kevin Coombes—dissects results from a highly-influential series of medical papers involving genomics-driven personalized cancer therapy, and outlines a series of simple yet fatal flaws that raises serious questions about the veracity of the original results. Having immediate and strong impact, this paper, along with related work, is providing the impetus for new standards of reproducibility in scientific research.

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Statistical Contributions To Proteomic Research, Jeffrey S. Morris, Keith A. Baggerly, Howard B. Gutstein, Kevin R. Coombes Jan 2010

Statistical Contributions To Proteomic Research, Jeffrey S. Morris, Keith A. Baggerly, Howard B. Gutstein, Kevin R. Coombes

Jeffrey S. Morris

Proteomic profiling has the potential to impact the diagnosis, prognosis, and treatment of various diseases. A number of different proteomic technologies are available that allow us to look at many proteins at once, and all of them yield complex data that raise significant quantitative challenges. Inadequate attention to these quantitative issues can prevent these studies from achieving their desired goals, and can even lead to invalid results. In this chapter, we describe various ways the involvement of statisticians or other quantitative scientists in the study team can contribute to the success of proteomic research, and we outline some of the …

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Informatics And Statistics For Analyzing 2-D Gel Electrophoresis Images, Andrew W. Dowsey, Jeffrey S. Morris, Howard G. Gutstein, Guang Z. Yang Jan 2010

Informatics And Statistics For Analyzing 2-D Gel Electrophoresis Images, Andrew W. Dowsey, Jeffrey S. Morris, Howard G. Gutstein, Guang Z. Yang

Jeffrey S. Morris

Whilst recent progress in ‘shotgun’ peptide separation by integrated liquid chromatography and mass spectrometry (LC/MS) has enabled its use as a sensitive analytical technique, proteome coverage and reproducibility is still limited and obtaining enough replicate runs for biomarker discovery is a challenge. For these reasons, recent research demonstrates the continuing need for protein separation by two-dimensional gel electrophoresis (2-DE). However, with traditional 2-DE informatics, the digitized images are reduced to symbolic data though spot detection and quantification before proteins are compared for differential expression by spot matching. Recently, a more robust and automated paradigm has emerged where gels are directly …

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Bayesian Random Segmentationmodels To Identify Shared Copy Number Aberrations For Array Cgh Data, Veerabhadran Baladandayuthapani, Yuan Ji, Rajesh Talluri, Luis E. Nieto-Barajas, Jeffrey S. Morris Jan 2010

Bayesian Random Segmentationmodels To Identify Shared Copy Number Aberrations For Array Cgh Data, Veerabhadran Baladandayuthapani, Yuan Ji, Rajesh Talluri, Luis E. Nieto-Barajas, Jeffrey S. Morris

Jeffrey S. Morris

Array-based comparative genomic hybridization (aCGH) is a high-resolution high-throughput technique for studying the genetic basis of cancer. The resulting data consists of log fluorescence ratios as a function of the genomic DNA location and provides a cytogenetic representation of the relative DNA copy number variation. Analysis of such data typically involves estimation of the underlying copy number state at each location and segmenting regions of DNA with similar copy number states. Most current methods proceed by modeling a single sample/array at a time, and thus fail to borrow strength across multiple samples to infer shared regions of copy number aberrations. …

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Code For Fitting Bdsacgh, Veera Baladandayuthapani Jan 2010

Code For Fitting Bdsacgh, Veera Baladandayuthapani

Veera Baladandayuthapani

No abstract provided.

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R Package For Bayesian Ensemble Methods For Survival Prediction In Gene Expression Data, Veera Baladandayuthapani Jan 2010

R Package For Bayesian Ensemble Methods For Survival Prediction In Gene Expression Data, Veera Baladandayuthapani

Veera Baladandayuthapani

This is the R package for the methods described in Bayesian ensemble methods for survival prediction in gene expression data by Vinicius Bonato , Veerabhadran Baladandayuthapani, Kim-Anh Do, Bradley M. Broom, Erik P. Sulman, and Kenneth D. Aldape Submitted to Bioinformatics (2010)

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Bayesian Random Segmentationmodels To Identify Shared Copy Number Aberrations For Array Cgh Data, Veera Baladandayuthapani Jan 2010

Bayesian Random Segmentationmodels To Identify Shared Copy Number Aberrations For Array Cgh Data, Veera Baladandayuthapani

Veera Baladandayuthapani

No abstract provided.

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Modeling And Optimal Control Of A Nonlinear Dynamical System In Microbial Fed-Batch Fermentation Process, Chongyang Liu, Zhaohua Gong, Enmin Feng Jan 2010

Modeling And Optimal Control Of A Nonlinear Dynamical System In Microbial Fed-Batch Fermentation Process, Chongyang Liu, Zhaohua Gong, Enmin Feng

Chongyang Liu

The mathematical model and optimal control of microbial fed-batch fermentation is considered in this paper. Since it is decisive for increasing the productivity of 1,3-propanediol (1,3-PD) to optimize the feeding rate of glycerol and the switching instants between the batch and feeding processes in the fermentation process, we propose a new nonlinear dynamical system to formulate the process. In the system, the switching instants are variable and the feeding rate of glycerol is regarded as the control function. Some important properties of the proposed system and its solution are then discussed. To maximize the concentration of 1,3-PD at the terminal …

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Participation And Engagement In Sport: A Double Hurdle Approach For The United Kingdom, Babatunde Buraimo, Brad Humphreys, Rob Simmons Jan 2010

Participation And Engagement In Sport: A Double Hurdle Approach For The United Kingdom, Babatunde Buraimo, Brad Humphreys, Rob Simmons

Dr Babatunde Buraimo

This paper uses pooled cross-section data from four waves of the United Kingdom’s Taking Part Survey, 2005 to 2009, in order to investigate determinants of probability of participation and levels of engagement in sports. The two rival modelling approaches considered here are the double-hurdle approach and the Heckman sample selection model. The Heckman model proves to be deficient in several key respects. The double-hurdle approach offers more reliable estimates than the Heckman sample selection model, at least for this particular survey. The distinction is more than just statistical nuance as there are substantive differences in qualitative results from the two …

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A New Algorithm On Graphical User Authentication (Gua) Based On Multi-Line Grids, Abdullah Gani Jan 2010

A New Algorithm On Graphical User Authentication (Gua) Based On Multi-Line Grids, Abdullah Gani

Abdullah Gani

Today user authentication stands out as one of the most essential areas in information security which has several ways of being implemented. From time in memorial authentication schemes that apply strong text-based passwords have been typically expected to offer some assurance of security. But committing to memory such strong passwords can prove to be quite a daunting task thus forcing users to resort to writing them down on pieces of papers or even storing them onto a computer file. As a means of thwarting such habits, graphical authentication has been proposed as a replacement for text-based authentication. This has been …

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Survey Report On Training And Spending On Customer Care Services, Deogratias Harorimana Sr Jan 2010

Survey Report On Training And Spending On Customer Care Services, Deogratias Harorimana Sr

Dr Deogratias Harorimana

In a bid to promote and develop good customer care service in various sectors of Rwandan economy, a survey was conducted to assess progress and trends on customer service capacity building. Although shortcomings are there, there have been efforts and registered trends across the country on service delivery front. Investment in Capacity Building IS happening in certain sectors but this is unevenly distributed. In 2008 companies had started recognizing the significance of good service and cultivate a good working environment and training. From 2009, there was a decline in investment in capacity building in front office and key service delivery …

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Lost In Translation? A Boundary Work Perspective On Making Climate Change Governable, Robert Hoppe Jan 2010

Lost In Translation? A Boundary Work Perspective On Making Climate Change Governable, Robert Hoppe

Robert Hoppe

No abstract provided.

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Partitioning Of ?India-Eurasua Convergence In The Pamir-Hindu Kush From Gps Measurements, Rebecca Bendick Jan 2010

Partitioning Of ?India-Eurasua Convergence In The Pamir-Hindu Kush From Gps Measurements, Rebecca Bendick

Rebecca Bendick

No abstract provided.

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Choosing Carbon Mitigation Strategies Using Ethical Deliberation, Rebecca Bendick Jan 2010

Choosing Carbon Mitigation Strategies Using Ethical Deliberation, Rebecca Bendick

Rebecca Bendick

No abstract provided.

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Why Subduction Zones Are Curved, Rebecca Bendick Jan 2010

Why Subduction Zones Are Curved, Rebecca Bendick

Rebecca Bendick

No abstract provided.

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