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Articles 1 - 30 of 793
Full-Text Articles in Physical Sciences and Mathematics
A Note On The Sub-Optimality Of Rank Ordering Of Objects On The Basis Of The Leading Principal Component Factor Scores, Sudhanshu K. Mishra
A Note On The Sub-Optimality Of Rank Ordering Of Objects On The Basis Of The Leading Principal Component Factor Scores, Sudhanshu K. Mishra
Sudhanshu K Mishra
This paper demonstrates that if we intend to optimally rank order n objects (candidates) each of which has m rank-ordered attributes or rank scores have been awarded by m evaluators, then the overall ordinal ranking of objects by the conventional principal component based factor scores turns out to be suboptimal. Three numerical examples have been provided to show that principal component based rankings do not necessarily maximize the sum of squared correlation coefficients between the individual m rank scores arrays, X(n,m), and overall rank scores array, Z(n).
Laser-Induced Photon-Branched Chain Reaction In A Chemically-Active Gas-Dispersed Medium, Thomas F. George, Renat R. Letfullin, Galen C. Duree
Laser-Induced Photon-Branched Chain Reaction In A Chemically-Active Gas-Dispersed Medium, Thomas F. George, Renat R. Letfullin, Galen C. Duree
Thomas George
Intelligent Multimedia Delivery? It’S A Question Of Semantics, Joseph Thomas-Kerr, I. Burnett, C. Ritz
Intelligent Multimedia Delivery? It’S A Question Of Semantics, Joseph Thomas-Kerr, I. Burnett, C. Ritz
Ian Burnett
Intelligent multimedia delivery uses semantic information about content to enhance the delivery process. This paper proposes a model for intelligent multimedia delivery that advances the state of the art by incorporating a concept of semantic distortion into the delivery optimization process. Furthermore, the model combines format-independence with rate-distortion optimization to provide a flexible framework for intelligent delivery of multimedia in existing and future formats. The paper provides a review of the existing work covering components of the model: scalable coding formats, rate-distortion optimization, format-independent adaptation, and semantic adaptation. It then details the model, and identifies open problems and opportunities for …
Pre-Processing Of Signals Observed From Laser Diode Self-Mixing Intereferometries Using Neural Networks, L. Wei, Joe F. Chicharo, Yanguang Yu, Jiangtao Xi
Pre-Processing Of Signals Observed From Laser Diode Self-Mixing Intereferometries Using Neural Networks, L. Wei, Joe F. Chicharo, Yanguang Yu, Jiangtao Xi
Professor Jiangtao Xi
This paper presents a novel neural network signal interpolation technique in order to eliminate the noise and disturbance associated with the self-mixing signal observed from optical feedback self- mixing interferometry (OFSMI). The proposed technique aims to improve the accuracy for displacement and moving track measurement of a target. The performance of the proposed approach is evaluated by both simulation and experimentation, with simulation revealing a measuring accuracy of A/25 for weak feedback and J20 for moderate feed back.
Carbon-Centric Computing: It Solutions For Climate Change, Aditya K. Ghose, Helen M. Hasan, T. Spedding
Carbon-Centric Computing: It Solutions For Climate Change, Aditya K. Ghose, Helen M. Hasan, T. Spedding
Helen Hasan
IT has a role to play in the current debate on climate change. The current discourse on IT and climate change views IT in a negative light, as a polluter. What remains unrecognized is the critical role of IT as a source of solutions to the climate change problem. We live in a massive, inter-connected Planet Earth Supply Chain. IT provides a range of tools to model, manage and optimize this supply chain. The University of Wollongong Carbon-Centric Computing Initiative (CCCI) seeks to seed a program of research that addresses the climate change problem with a range of computing technologies …
Gravitational Wave Burst Source Direction Estimation Using Time And Amplitude Information, J. Markowitz, M. Zanolin, L. Cadonati, E. Katsavounidis
Gravitational Wave Burst Source Direction Estimation Using Time And Amplitude Information, J. Markowitz, M. Zanolin, L. Cadonati, E. Katsavounidis
Michele Zanolin
Corso Di Analisi Delle Serie Storiche A.A 2008/2009- Laboratorio Di Stata: Lezione 3 –Analisi Classica Delle Serie Storiche I (Formato Pdf), Carlo Drago
Carlo Drago
No abstract provided.
Matter-Wave Self-Imaging By Atomic Center-Of-Mass Motion Induced Interference, Ke Li, L. Deng, E. W. Hagley, Marvin G. Payne, M. S. Zhan
Matter-Wave Self-Imaging By Atomic Center-Of-Mass Motion Induced Interference, Ke Li, L. Deng, E. W. Hagley, Marvin G. Payne, M. S. Zhan
Marvin G. Payne
We demonstrate matter-wave self-imaging resulting from atomic center-of-mass motion-based interference. We show that non-negligible atomic center-of-mass motion and an instantaneous Doppler shift can drastically change the condensate momentum distribution, resulting in a periodic collapse and the recurrence of condensate diffraction probability as a function of the stationary light-field pulsing time. The observed matter-wave self-imaging is characterized by an atomic center-of-mass motion induced population amplitude interference in the presence of the light field that simultaneously minimizes all high (n≥1) diffraction orders and maximizes the zeroth diffraction component.
Switchable Polarization-Independent Liquid-Crystal Fabry-Perot Filter, Enkh-Amgalan Dorjgotov, Achintya K. Bhowmik, Philip J. Bos
Switchable Polarization-Independent Liquid-Crystal Fabry-Perot Filter, Enkh-Amgalan Dorjgotov, Achintya K. Bhowmik, Philip J. Bos
Philip J. Bos
A new approach to a polarization-independent twisted liquid-crystal (LC) structure, where phase difference between orthogonal eigenmodes is tuned to be an integer multiple of 2 pi, is demonstrated with a numerical model. For select wavelengths, polarization-independent operation can be achieved by tuning the twist rate and thickness of the LC cavity Applications can be found in polarization-independent switches and field sequential wavelength selection devices.
Corso Di Analisi Delle Serie Storiche A.A 2008/2009- Laboratorio Di Stata: Lezione 2 - Costruzione Di Datasets Temporali, Trasformazioni E Analisi Grafica (Formato Pdf), Carlo Drago
Carlo Drago
No abstract provided.
Choosing Among Unequals: A Statistical Solution To A Stalemate, Durgesh Chandra Pathak
Choosing Among Unequals: A Statistical Solution To A Stalemate, Durgesh Chandra Pathak
Durgesh Chandra Pathak
In Uttar Pradesh, a new tradition has been started of selecting B.Ed degree holders for a job in Primary Schools and it has been named "Vishisht BTC". Applying their own logic, the ruling governments use variuos criterion to select the candidates. The basic problem is that they have to choose candidates on the basis of merit of their marks in various exams. Now, it is well-established fact that marking is not similar in all universities/colleges. So for a same exam, there can be much inter-university as well as intra-university variation in marks given to students. The point is that student …
Giant Sequoia Insect, Disease, And Ecosystem Interactions, Douglas D. Piirto
Giant Sequoia Insect, Disease, And Ecosystem Interactions, Douglas D. Piirto
Douglas D. Piirto
Individual trees of giant sequoia (Sequoia gigantea [Lindl.] Decne.) have demonstrated a capacity to attain both a long life and very large size. It is not uncommon to find old-growth giant sequoia trees in their native range that are 1,500 years old and over 15 feet in diameter at breast height. The ability of individual giant sequoia trees to survive over such long periods of time has often been attributed to the species high resistance to disease, insect, and fire damage. Such a statement, however, is a gross oversimplification, given broader ecosystem and temporal interactions. For example, why isn't there …
Efficacy Of Herbicide Application Methods Used To Control Tanoak (Lithocarpus Densiflorus) In An Uneven-Aged Coast Redwood Management Context, Douglas D. Piirto, Brenda Smith, Eric K. Huff, Scott T. Robinson
Efficacy Of Herbicide Application Methods Used To Control Tanoak (Lithocarpus Densiflorus) In An Uneven-Aged Coast Redwood Management Context, Douglas D. Piirto, Brenda Smith, Eric K. Huff, Scott T. Robinson
Douglas D. Piirto
Three methods of tanoak (Lithocarpus densiflorus [Hook. & Arn.] Rehd.) control involving the application of the amine or ester form of triclopyr were evaluated in this coast redwood uneven-aged forest management study of herbicides. A cut-stump application with the amine form of triclopyr (Garlon 3A), frill cut with the amine form of triclopyr, basal-bark (outer surface) with the ester form of triclopyr (Garlon 4), and an untreated control were replicated three times. The tanoak control results in Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) and/ or coast redwood (Sequoia sempervirens [D. Don] Endl.) predominated stands obtained in earlier studies …
Cost-Effective Fire Management For Southern California's Chaparral Wilderness: An Analytical Procedure, Chris A. Childers, Douglas D. Piirto
Cost-Effective Fire Management For Southern California's Chaparral Wilderness: An Analytical Procedure, Chris A. Childers, Douglas D. Piirto
Douglas D. Piirto
Fire management has always meant fire suppression to the managers of the chaparral covered southern California National Forests. Today, Forest Service fire management programs must be cost effective, while wilderness fire management objectives are aimed at recreating natural fire regimes. A cost-effectiveness analysis has been developed to compare fire management options for meeting these objectives in California's chaparral wilderness. This paper describes the analytical procedure using examples from a study currently being conducted for the Los Padres National Forest, and discusses some preliminary results.
Optimization Of Check Dams Through The Application Of Advanced Technologies, Praveen Jha Dr
Optimization Of Check Dams Through The Application Of Advanced Technologies, Praveen Jha Dr
Praveen Jha Dr
Scientific planning for conserving water and while minimizing the financial resources requirement for its implementation could be done through application of advanced technological programs developed by the author. Three state-of-art geo-spatial programs - Multi-Algorithm Automation Program (MAAP), Water Analysis Program (WAP) and Check Dam Optimization Program (CDOP) - would be used. MAAP produces land use land cover (lulc) map primarily by undertaking Digital Image Processing (DIP) of satellite data in an automated fashion using Artificial Intelligence (AI). WAP, a hydrology modeling program, would be used to generate information related to watershed, water flow, water accumulation etc. CDOP, coupled with MAAP …
Detection Of An So2 Plume Over Sapporo, Japan From The Eruption Of Mt. Kasatochi Using A Balloon Sounding Technique, Gary A. Morris, Jun Hirokawa, Masatomo Fujiwara, Fumio Hasebe, Keisuke Ishida, Nicholay Krotkov, Mark R. Schoeberl, Walter Komhyr, Barry Lefer, James Flynn
Detection Of An So2 Plume Over Sapporo, Japan From The Eruption Of Mt. Kasatochi Using A Balloon Sounding Technique, Gary A. Morris, Jun Hirokawa, Masatomo Fujiwara, Fumio Hasebe, Keisuke Ishida, Nicholay Krotkov, Mark R. Schoeberl, Walter Komhyr, Barry Lefer, James Flynn
Gary A. Morris
During the month of August 2008, 10 ozonesondes were launched from Hokkaido University in Sapporo, Japan as part of a study to examine regional pollution during the Olympic period. Seven of these soundings included a second instrument with a filter designed to remove SO2 from the intake air stream. SO2 interferes with the normal chemistry of the electrochemical cell (ECC) method for ozone detection, with the net result being that each molecule of SO2 registers as minus one molecule of O3. Thus the unfiltered sonde reports [O3] - [SO2] while the filtered sonde reports [O3]. Laboratory tests prior to launch …
More Powerful Exact Noninferiority And Equivalence Tests Based On Binary Matched Pairs, Chris Lloyd
More Powerful Exact Noninferiority And Equivalence Tests Based On Binary Matched Pairs, Chris Lloyd
Chris J. Lloyd
Assessing the therapeutic noninferiority or equivalence of one medical treatment compared to another is often based on the difference of response rates from a matched binary pairs design. This paper develops new exact unconditional tests for noninferiority and equivalence that are more powerful than available alternatives. There are three new elements presented in this paper. First we introduce the LR statistic as an alternative to the previously proposed score statistic of Nam (1997). Second, we eliminate the nuisance parameter by estimation followed by maximization as an alternative to the partial maximization of Berger and Boos (1994) or traditional full maximization. …
Centers Of Polymer Science: Introduction, Otto Vogl
Centers Of Polymer Science: Introduction, Otto Vogl
Otto Vogl
Centers of Polymer Science describes polymer research activities taking place in Europe, Asia, and Australia primarily during the years between 1980 and 2000. This series of articles shows and records the activity in Polymer Science in this part of polymer history.
Book I, Otto Vogl: Papers And Patents, 1948-1970, Jane C. Vogl
Book I, Otto Vogl: Papers And Patents, 1948-1970, Jane C. Vogl
Otto Vogl
Books I-XII include citations to Otto Vogl's publications and patents. Printed versions of these twelve volumes are also available in the Integrated Sciences and Engineering Library of the University of Massachusetts in Amherst. MA, Lederle Graduate Research Center. The printed volumes include the full reprints of all cited publications.
Fluoranthene, But Not Benzo[A]Pyrene, Interacts With Hypoxia Resulting In Pericardial Effusion And Lordosis In Developing Zebrafish, Cole W. Matson, Alicia R. Timme-Laragy, Richard T. Di Giulio
Fluoranthene, But Not Benzo[A]Pyrene, Interacts With Hypoxia Resulting In Pericardial Effusion And Lordosis In Developing Zebrafish, Cole W. Matson, Alicia R. Timme-Laragy, Richard T. Di Giulio
Alicia R. Timme-Laragy
Previous research has documented several PAHs that interact synergistically, causing severe teratogenicity in developing fish embryos. The coexposure of CYP1A inhibitors (e.g. FL or ANF) with AHR agonists (e.g. BaP or BNF) results in a synergistic increase in toxicity. As with chemical CYP1A inhibitors, it has also been shown that CYP1A morpholinos exacerbate BNF-induced embryotoxicity. We hypothesized that a hypoxia-induced reduction in CYP1A activity in BNF or BaP-exposed zebrafish embryos would similarly enhance pericardial effusion and other developmental abnormalities. BaP, BNF, ANF, and FL exposures, both individually and as BaP+FL or BNF+ANF combinations, were performed under hypoxia and normoxia. CYP1A …
International Terrorism:Role ,Responsibility And Operation Of Media Channles, Ratnesh Dwivedi Mr
International Terrorism:Role ,Responsibility And Operation Of Media Channles, Ratnesh Dwivedi Mr
Ratnesh Dwivedi
"Terrorism" is a term that cannot be given a stable defintion. Or rather, it can, but to do so forstalls any attempt to examine the major feature of its relation to television in the contemporary world. As the central public arena for organising ways of picturing and talking about social and political life, TV plays a pivotal role in the contest between competing defintions, accounts and explanations of terrorism. Which term is used in any particular context is inextricably tied to judgemements about the legitimacy of the action in question and of the political system against which it is directed. …
Tuning Nonlinear Optical Properties In Π-Delocalizable Ruthenium Complexes, T. Christopher Corkery, Sanjay S. Chavan, Marie P. Cifuentes, Marek Samoc, Stijn Van Cleuvenbergen, Inge Asselberghs, Koen Clays, Mark G. Humphrey
Tuning Nonlinear Optical Properties In Π-Delocalizable Ruthenium Complexes, T. Christopher Corkery, Sanjay S. Chavan, Marie P. Cifuentes, Marek Samoc, Stijn Van Cleuvenbergen, Inge Asselberghs, Koen Clays, Mark G. Humphrey
Chris Corkery
No abstract provided.
The Star Formation Law In Nearby Galaxies On Sub-Kpc Scales, F. Bigiel, A. Leroy, F. Walter, E. Brinks, W.J.G. De Blok, B. F. Madore, Michele D. Thornley
The Star Formation Law In Nearby Galaxies On Sub-Kpc Scales, F. Bigiel, A. Leroy, F. Walter, E. Brinks, W.J.G. De Blok, B. F. Madore, Michele D. Thornley
Michele Thornley
Corso Di Analisi Delle Serie Storiche A.A 2008/2009- Laboratorio Di Stata: Lezione 1 - Operazioni Di Base (Formato Pdf), Carlo Drago
Carlo Drago
No abstract provided.
Tidal Heating Of Terrestrial Extrasolar Planets And Implications For Their Habitability, Brian Jackson, Rory Barnes, Richard Greenberg
Tidal Heating Of Terrestrial Extrasolar Planets And Implications For Their Habitability, Brian Jackson, Rory Barnes, Richard Greenberg
Brian Jackson
The tidal heating of hypothetical rocky (or terrestrial) extrasolar planets spans a wide range of values depending on stellar masses and initial orbits. Tidal heating may be sufficiently large (in many cases, in excess of radiogenic heating) and long-lived to drive plate tectonics, similar to the Earth's, which may enhance the planet's habitability. In other cases, excessive tidal heating may result in Io-like planets with violent volcanism, probably rendering them unsuitable for life. On water-rich planets, tidal heating may generate subsurface oceans analogous to Europa's with similar prospects for habitability. Tidal heating may enhance the outgassing of volatiles, contributing to …
Finding Recurrent Regions Of Copy Number Variation: A Review, Oscar M. Rueda, Ramon Diaz-Uriarte
Finding Recurrent Regions Of Copy Number Variation: A Review, Oscar M. Rueda, Ramon Diaz-Uriarte
Ramon Diaz-Uriarte
Copy number alterations (CNA) in genomic DNA are linked to a variety of human diseases. Although many methods have been developed to analyze data from a single subject, disease-critical genes are more likely to be found in regions that are common or recurrent among diseased subjects. Unfortunately, finding recurrent CNA regions remains a challenge. We review existing methods for the identification of recurrent CNA regions. Methods differ in their working definition of ``recurrent region'', the type of input data, the statistical and computational methods used to identify recurrence, and the biological considerations they incorporate (which play a role in the …
Regressing Scalar Outcomes On Image Predictors Via Functional Principal Component Regression, Philip T. Reiss
Regressing Scalar Outcomes On Image Predictors Via Functional Principal Component Regression, Philip T. Reiss
Philip T. Reiss
No abstract provided.
Networking, William Osei-Poku
Player Guild Dynamics And Evolution In Massively Multiplayer Online Games, Chien Hsun Chen, J. L. Hsieh, C. T. Sun
Player Guild Dynamics And Evolution In Massively Multiplayer Online Games, Chien Hsun Chen, J. L. Hsieh, C. T. Sun
Chien Hsun Chen
In the latest versions of massively multiplayer online games (MMOGs), developers have purposefully made guilds part of game environments. Guilds represent a powerful method for giving players a sense of online community, but there is little quantitative data on guild dynamics. To address this topic, we took advantage of a feature found in one of today’s most popular MMOGs (World of Warcraft) to collect in-game data: user interfaces that players can modify and refine. In addition to collecting data on in-game player activities, we used this feature to observe and investigate how players join and leave guilds. Data were analyzed …
Leading Firms As Knowledge Gatekeepers In A Networked Environment, Deogratias Harorimana Mr
Leading Firms As Knowledge Gatekeepers In A Networked Environment, Deogratias Harorimana Mr
Dr Deogratias Harorimana
This chapter introduces the role of the knowledge gatekeeper as a mechanism by which knowledge is created and transferred in a networked environment. Knowledge creation and transfer are essential for building a knowledge based economy. The chapter considers obstacles that inhibit this process and argues that leading firms create a shared socio-cultural context that enables the condivision of tacit meanings and codification of knowledge. Leading firms act as gatekeepers of knowledge through the creation of shared virtual platforms. There will be a leading firm that connects several networks of clients and suppliers may not interact directly with one another, but …