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Articles 2071 - 2100 of 2429

Full-Text Articles in Physical Sciences and Mathematics

Electron Emission From Surfaces Resulting From Low Energy Positron Bombardment, Saurabh Mukherjee Jan 2008

Electron Emission From Surfaces Resulting From Low Energy Positron Bombardment, Saurabh Mukherjee

Physics Dissertations - Archive

Measurements of the secondary electron energy spectra resulting from very low energy positron bombardment of a polycrystalline Au and Cu (100) surfaces are presented that provide evidence for a single step transition from an unbound scattering state to an image potential bound state. The primary positron energy threshold for secondary electron emission and energy cutoff of the positron induced secondary electron energy peak are consistent with an Auger like process in which an incident positron make a transition from a scattering state to a surface-image potential bound while transferring all of the energy difference to an outgoing secondary electron. We …

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Life History Of The Predatory Mite Phytoseiulus Fragariae On Tetranychus Evansi And Tetranychus Urticae (Acari: Phytoseiidae, Tetranychidae) At Five Temperatures, Geraldo José Nascimento De Vasconcelos, Gilberto José De Moraes, Ítalo Delalibera Júnior, Markus Knapp Jan 2008

Life History Of The Predatory Mite Phytoseiulus Fragariae On Tetranychus Evansi And Tetranychus Urticae (Acari: Phytoseiidae, Tetranychidae) At Five Temperatures, Geraldo José Nascimento De Vasconcelos, Gilberto José De Moraes, Ítalo Delalibera Júnior, Markus Knapp

All Peer-Reviewed Publications

Tetranychus evansi Baker and Pritchard and Tetranychus urticae Koch (Acari: Tetranychidae) are important pests of Solanaceae in many countries. Several studies have demonstrated that T. urticae is an acceptable prey to many predatory mites, although the suitability of this prey depends on the host plant. T. evansi, has been shown to be an unfavorable prey to most predatory mites that have been tested against it. The predator Phytoseiulus fragariae Denmark and Schicha (Acari: Phytoseiidae) has been found in association with the two species in Brazil. The objective of this work was to compare biological parameters of P. fragariae on T. …

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On The Impact Of Winter Conditions On The Dynamics Of An Isolated Population, Lev V. Nedorezov, E. V. Volkova, Alexandr M. Sadykov Jan 2008

On The Impact Of Winter Conditions On The Dynamics Of An Isolated Population, Lev V. Nedorezov, E. V. Volkova, Alexandr M. Sadykov

All Peer-Reviewed Publications

This chapter is devoted to the analysis of single-species population dynamics models with overlapping and non-overlapping generations. Within the framework of all models it is assumed that there are no activities of individuals during the wintertime (as, for example, is the case for forest insect populations in the boreal zone), and changes in population size at these moments are described with a broken trajectory (“jump down”). Also, it is assumed that the fecundity of individuals is constant and that the quota of individuals surviving winter depends on the within-year population dynamics. The dynamics of the models, which are determined by …

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Stochastic Models For In-Silico Event-Based Biological Network Simulation, Preetam Ghosh Dec 2007

Stochastic Models For In-Silico Event-Based Biological Network Simulation, Preetam Ghosh

Computer Science and Engineering Dissertations - Archive

The multi-scale biological system model is a new research direction to capture the dynamic measurements of complex biological systems. The current statistical thermodynamic models can not scale to this challenge due to the explosion of state-spaces of the system, where a biological organ may have billions of cells, each with millions of molecule types and each type may have a few million molecules. We seek to propose a phenomenological theory that will require a smaller number of state variables to address this multi-scaling problem. Discrete Markov statistical process is used to understand the system dynamics in the networking community for …

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Ral Interacting Protein (Ralbp1): Linking Glutathione Conjugate Transport To Oxidative Stress Defenses And Signaling Pathways, Dilki Wickramarachchi Dec 2007

Ral Interacting Protein (Ralbp1): Linking Glutathione Conjugate Transport To Oxidative Stress Defenses And Signaling Pathways, Dilki Wickramarachchi

Chemistry & Biochemistry Dissertations - Archive

The glutathione-conjugate transporter protein DNP-SG ATPase was demonstrated to be identical to the independently cloned Ral-effector, Ralbp1. Glutathione-conjugate transport is linked to substrate-stimulated ATPase activity, while GTPase stimulating activity (GAP-activity), and clathrin-coated pit-binding activity was demonstrated for this protein by different groups of investigators. The relationship between these activities and physiological functions of Ralbp1 were not clear. The present studies were designed to address the hypothesis that the ability of Ralbp1 to couple the hydrolysis of ATP with the movement of substances, i.e. its transport activity, is the crucial element that allows Ralbp1 to function as a stress-defense protein. Results …

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Studies Towards Bioactive Imidazoles, Karuna Koda Dec 2007

Studies Towards Bioactive Imidazoles, Karuna Koda

Chemistry & Biochemistry Theses - Archive

The work presented in this thesis focuses on the development of an enantioselective and practical route form the total synthesis of villagorgin via haplosleridamine imidazole alkaloid containing β- carboline moiety by employing the well-known Pictet-Spengler and Fischer indole reactions. We approached two different ways inorder to synthesize these molecules Our first approach focused on using a Dieckmann condensation, requiring the preparation of the corresponding diester. Initial attempts to prepare this substrate directly from histidine were unsuccessful, however after conversion to the N-benzzylamine and reductive amination with ester provided the key diester compound. Unfortunately, attempts to effect the Dieckmann reaction were …

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Supramolecular Chemistry On Carbon Dioxide, Hexiang Zhang Dec 2007

Supramolecular Chemistry On Carbon Dioxide, Hexiang Zhang

Chemistry & Biochemistry Theses - Archive

This dissertation describes approaches towards designs, syntheses, characterizations, and applications of supramolecular chemistry on carbon dioxide. Chapter 1 briefly overviews the field of supramolecular chemistry and highlights its horizons, also introduces the progress of sensing devices on chemical warfare agents. Chapter 2 introduces a modular approach to detect chemical warfare agent: phosgene by Fluorescence Resonance Energy Transfer (FRET). It combines the chemical reactivity between amines and phosgene with fluorescence properties of coumarin fluorophores, forms a fast, selective and reliable sensing system. Chapter 3 overviews the chemistry between amines and carbon dioxide and introduces the applications of this reaction in molecular …

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Uniform Weighted Compact / Non-Compact Schemes For Shock / Boundary Layer Interaction, Peng Xie Dec 2007

Uniform Weighted Compact / Non-Compact Schemes For Shock / Boundary Layer Interaction, Peng Xie

Mathematics Dissertations - Archive

The critical problem of CFD is perhaps an accurate approximation of derivatives for a given discrete data set. Based on our previous work on the weighted compact scheme (WCS), a uniform weighted compact / non-compact scheme (UWCNC) has been developed. Similar to WENO, three high order candidates, left, right, and central, are constructed by using Hermite polynomials. According to the smoothness, three weights are derived and assigned to each candidate. The weights will lead the scheme to be upwind-biased when approaching the shock or other discontinuities but quickly becomes central, compact, and of high order just off the shock. Therefore, …

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Learning Video Preferences Using Visual Features And Closed Captions, Darin Brezeale Dec 2007

Learning Video Preferences Using Visual Features And Closed Captions, Darin Brezeale

Computer Science and Engineering Dissertations - Archive

Viewers of video now have more choices than ever. As the number of choices increases, the task of searching through these choices to locate video of interest is becoming more difficult. Current methods for learning a viewer's preferences in order to automate the search process rely either on video having content descriptions or on having been rated by other viewers identified as being similar. However, much video exists that does not meet these requirements. To address this need, we use hidden Markov models to learn the preferences of a viewer by combining visual features and closed captions. We validate our …

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Distributed Predictive Health Monitoring, Jorge David Herrera Gonzalez Dec 2007

Distributed Predictive Health Monitoring, Jorge David Herrera Gonzalez

Computer Science and Engineering Theses - Archive

According to the National Center for Health Statistics the major causes of death in the US are (per year) heart diseases with 654 thousand cases, followed by cancer with 550 thousand cases and stroke with 150 thousand cases. In this project we propose, design, implement and test a prototype of a system that promises to improve the level of detection and prediction of several diseases and improves the quality of life of patients by utilizing non-invasive wireless medical sensors. This system is composed of a set of wireless medical sensors, a nearby (close-proximity) PDA (personal digital accessory) or cell phone …

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Cxlengine - A Comprehensive Xml Loosely Structured Search Engine, Indhu Krishna Sivaramakrishnan Dec 2007

Cxlengine - A Comprehensive Xml Loosely Structured Search Engine, Indhu Krishna Sivaramakrishnan

Computer Science and Engineering Theses - Archive

XML keyword search has been a widely researched area. [15] has proposed an XML semantic search engine called OOXSearch, which answers loosely structured queries. The framework of OOXSearch takes into account the semantic relationship between nodes based on their contexts. The context of a node is determined by its parent node. The label "name", for example, could mean the name of a book and could also mean the name of the book's author. If we try to consider the relationship between these two nodes without considering their parent nodes, we would be drawing the incorrect conclusion that these two nodes …

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Limitations Of Ieee 802.15.4 Based Wireless Mesh Networks For Wireless Localization, William Anthony Wallace Dec 2007

Limitations Of Ieee 802.15.4 Based Wireless Mesh Networks For Wireless Localization, William Anthony Wallace

Computer Science and Engineering Theses - Archive

It is highly desirable to create rapidly and inexpensively deployable mesh networks in certain scenarios. Consider the case of a large storage warehouse; workers are constantly moving in the area and not only do they need to send data periodically but their location needs to be tracked as well. Setting up such network can be accomplished with the IEEE 802.15.4 standard, but a mesh network must be created. There would need to be stationary 802.15.4 nodes that join together to form a backbone infrastructure. This backbone infrastructure (mesh network) would allow the workers, using mobile 802.15.4 nodes, to transmit their …

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Subrosa: An Experimental Platform For Studying Timing Analysis Of Real Time Anonymity Systems, Hatim Asger Daginawala Dec 2007

Subrosa: An Experimental Platform For Studying Timing Analysis Of Real Time Anonymity Systems, Hatim Asger Daginawala

Computer Science and Engineering Theses - Archive

Timing analysis poses a significant challenge for the mix based anonymous systems that wish to support low-latency applications like web browsing, instant messaging and Voice over IP (VOIP). Research in this area so far has been done through simulations on ad hoc simulators or non practical local area networks. We developed SubRosa, an experimental platform for studying timing analysis of real time anonymity systems to facilitate the study of Tor like low-latency anonymous systems. We present results of experiments on a real distributed network test bed PlanetLab, where we studied timing analysis attacks and some of the defenses to protect …

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Panda Monitoring - A System To Monitor High Performance Computing For The Atlas Experiment-Design, Development,Implementation And Deployment, Prem A. Thilagar Dec 2007

Panda Monitoring - A System To Monitor High Performance Computing For The Atlas Experiment-Design, Development,Implementation And Deployment, Prem A. Thilagar

Computer Science and Engineering Theses - Archive

Grid resources are gaining wide importance in the wake of experiments such as ATLAS aiding in a bigger goal to understand the complexities of nature. The need for a good monitoring system is realized as grid resources are being implemented widely. This work is an analysis of the existing monitoring system of the Panda which is a grid middleware for the ATLAS experiment running in CERN. The thesis aims at identifying the key bottlenecks of the current monitor and speaks about the implementation of a new monitor for the same .The new monitor which is being designed with scalability and …

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Ring Closing Enyne Metathesis Of Imidazole Derivatives And Subsequent Diels-Alder Reaction, E. Vindana Ekanayake Dec 2007

Ring Closing Enyne Metathesis Of Imidazole Derivatives And Subsequent Diels-Alder Reaction, E. Vindana Ekanayake

Chemistry & Biochemistry Theses - Archive

The work presented in this thesis describes the development of new synthetic routes to elaborate simple imidazole derivatives into complex imidazole molecules by the application of different sequential transformations. The first transformation considered is the ring closing enyne metathesis (RCEYM) of imidazoles. To carry out this reaction various allyl and propargyl derivatives of imidazole have been synthesized. These enyne substrates have been varied by changing the positions on the imidazole, as well as changing the protecting groups. All substrates contain trimethysilyl-protected propargyl derivative as the "yne" moiety. After the successful preparation of different enyne substrates, they were subjected to the …

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On Progenitively Koszul Commutative Rings, Paul Russell Stern Dec 2007

On Progenitively Koszul Commutative Rings, Paul Russell Stern

Mathematics Dissertations - Archive

This paper introduces and identifies classes of progenitively Koszul rings. A progenitively Koszul ring is a commutative ring that admits a Koszul complex A=K(R) that is formal, and such that the homology algebra H(A) generated by A is a Koszul algebra. Local complete intersections, which yield exterior algebras (an example of a Koszul algebra) for their homology algebras, serve as a prototype. It is shown that the local complete intersections occupy only a small portion of the class of progenitively Koszul rings. The material in Chapter 1 will cover basic definitions and facts regarding free resolutions differential graded algebras, homology, …

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Multiply Charged Cationic Pairing Agents For Trace Analysis Of Anionic Species By Electrospray Ionization Mass Spectrometry, Jeffrey William Remsburg Dec 2007

Multiply Charged Cationic Pairing Agents For Trace Analysis Of Anionic Species By Electrospray Ionization Mass Spectrometry, Jeffrey William Remsburg

Chemistry & Biochemistry Theses - Archive

Electrospray ionization is one of the most broadly useful and successful approaches for coupling high performance liquid chromatography to mass spectrometry. Most of the research in electrospray ionization mass spectrometry (ESI-MS) has been limited to the positive ion mode, where lower detection limits are generally achieved, due several advantages over the more problematic negative ion mode. However, if one wishes to study anionic species, the negative ion mode traditionally had to be employed, and the problems associated with the negative ion mode had to be tolerated or ameliorated as much as possible Recently, novel work has been done to take …

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A Discrete Event Based Stochastic Simulation Approach For Studying The Dynamics Of Biological Networks, Samik Ghosh Dec 2007

A Discrete Event Based Stochastic Simulation Approach For Studying The Dynamics Of Biological Networks, Samik Ghosh

Computer Science and Engineering Dissertations - Archive

With increasing availability of data resources on the molecular parts of a living cell, biologists are focusing on holistic understanding of cellular mechanisms and the emergent dynamics arising out of their complex interactions. Comprehending the fine-grained signal specificity, gene regulation and feedback mechanisms of molecular interactions at a network level forms a central theme of systems biology. With the speed and sophistication of computational methods, in silico modeling and simulation techniques have become a powerful tool for biologists challenged with understanding the system complexity of biological networks. Numerical simulation of classical chemical kinetics (CCK), agent-based simulations of biological processes, and …

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Ralbp1 In Stress Resistance, Kenneth Drake Dec 2007

Ralbp1 In Stress Resistance, Kenneth Drake

Chemistry & Biochemistry Dissertations - Archive

Ralbp1 is a multi-specific transporter of glutathione conjugates as well as unconjugated amphiphilic toxins. Because glutathione conjugates are major metabolites of toxic lipid peroxidation products generated as a consequence of oxidant and radiant stress, the hypothesis is put forth that the function of Ralbp1 in-vivo and in vitro should be to protect organisms from chemical stress by removing toxic chemicals. Studies described in this dissertation were designed to prove this hypothesis. We tested the hypothesis by examining whether the inhibition or augmentation of Ralbp1 would sensitize or protect cells and whole animals from the toxic effects of chemicals and radiation. …

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Study Of Multiple Impacts Of A Rigid Body With A Flat Surface, Florin Vasile Badiu Dec 2007

Study Of Multiple Impacts Of A Rigid Body With A Flat Surface, Florin Vasile Badiu

Mathematics Dissertations - Archive

Both analytical and numerical results are presented for two rigid body problems: a rod colliding with the ground, and a rigid thin plate colliding with the ground. The study of the succession of impacts of the rod with the ground confirms results from literature, and explores new cases. Numerical simulations can provide results in the study of the clattering impacts of a 3D body colliding with the ground. For a simplification of the analytical calculations, a rectangular plate without thickness is studied. In this case, a comparison between the numerical method, which is a continuous contact method, and the analytical …

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A Search For The Higgs Boson In Its Associated Production With A W Vector Boson In P¯P Collisions At √S = 1.96 Tev, Venkatesh S. Kaushik Dec 2007

A Search For The Higgs Boson In Its Associated Production With A W Vector Boson In P¯P Collisions At √S = 1.96 Tev, Venkatesh S. Kaushik

Physics Dissertations - Archive

We present the results of a search for the Standard Model Higgs boson in its associated production with a W vector boson in p¯p collisions at √s = 1.96 TeV using the complete Run IIA dataset with an integrated luminosity of 1.04 fb−1 collected by the DØ experiment. The salient features of this analysis are the extended geometric acceptance by including the pseudorapidity covered by the end cap calorimeter, optimization in b-tagging and event selection criteria. We observe very good agreement in the data compared to the expectation form the modeling of Standard Model background for the WH signal. No …

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Assemblies Of Assemblies: Supramolecular Ordering Of Nanoscopic Ruthenium Polypyridyl Building Blocks, Kelly Lyle Wouters Nov 2007

Assemblies Of Assemblies: Supramolecular Ordering Of Nanoscopic Ruthenium Polypyridyl Building Blocks, Kelly Lyle Wouters

Chemistry & Biochemistry Dissertations - Archive

Biological systems have long since perfected the development of nanoengineering. Cellular structure and machinery is based, to a significant extent, on the formation of nanometer to micron-sized assemblies of proteins. These architectures start with unique primary, secondary, tertiary, and quaternary structural complexity and can be constructed from a relatively simple set of building blocks. Using this strategy as inspiration, assemblies based on [Ru(phenanthroline)3]2+ building blocks have been synthesized forming polyruthenium species bridged by the tpphz (tetrapyrido[3,2-a:2’,3’-c:3’’,2’’-h:2’’’,3’’’-j]phenazine) and tatpp (9,11,20,22- tetraaza tetrapyrido[3,2-a:2’,3’-c:3’’,2’’-l:2’’’’,3’’’’-n]-pentacene) ligands. Importantly, these assemblies exhibit unique hierarchical structural components which arise directly from the chirality inherent in the octahedral …

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Novel Phenomena In Encapsulating Hydrocarbon Gases, Anas W. Saleh Nov 2007

Novel Phenomena In Encapsulating Hydrocarbon Gases, Anas W. Saleh

Chemistry & Biochemistry Theses - Archive

The use of hydrophobic forces for entrapment of gases in water will be discussed. Natural hydrocarbons, haloalkanes, and anesthetic gases are hydrophobic in nature. In the course of this investigation water-soluble molecular capsules that possess hydrophobic interiors were synthesized. The encapsulation of hydrocarbon gases in water and in solid state was achieved and monitored by NMR spectroscopy. Our findings may lead to novel, capsule-based materials for gas separation and purification. The work presented in this thesis is divided into two sections. The first section discusses the synthesis of two water soluble hemicarcerands and their use as hosts in encapsulating hydrocarbon …

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Distinct Value Estimation By Sampling On Unstructured Peer To Peer Networks, Zubin Matthew Joseph Nov 2007

Distinct Value Estimation By Sampling On Unstructured Peer To Peer Networks, Zubin Matthew Joseph

Computer Science and Engineering Theses - Archive

Peer-to-Peer networks have become very popular on the Internet, with millions of peers all over the world sharing large volumes of data. The sheer scale of these networks has made it difficult to gather statistics that could be used for building new features. This thesis presents a technique of obtaining estimations of the number of distinct values matching a query on the network. The method is then analyzed by considering simulation results that demonstrate its effectiveness and flexibility in supporting a variety of queries and applications.

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Seasonal And Diel Variation Of Atmospheric Mercury Concentrations In The Reno (Nevada, Usa) Airshed, Jelena Stamenkovic, Seth Lyman, Mae S. Gustin Oct 2007

Seasonal And Diel Variation Of Atmospheric Mercury Concentrations In The Reno (Nevada, Usa) Airshed, Jelena Stamenkovic, Seth Lyman, Mae S. Gustin

USU Uintah Basin Faculty Publications

This paper describes total gaseous mercury (TGM) concentrations measured in Reno, Nevada from 2002 to 2005. The 3-year mean and median air Hg concentrations were 2.3 and 2.1 ng m−3, respectively. Mercury concentrations exhibited seasonality, with the highest concentrations in winter, and the lowest in summer and fall. A well-defined diel pattern in TGM concentration was observed, with maximum daily concentrations observed in the morning and minimum in the afternoon. A gradual increase of TGM concentration was observed in the evening and over night. The early morning increase in TGM was likely due to activation of local surface emission sources …

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Search For Effective Natural Enemies Of Tetranychus Evansi (Acari: Tetranychidae) In Northwest Argentina, Imeuda P. Furtado, Silvana Toledo, Gilberto J. De Moraes, Serge Kreiter, Markus Knapp Oct 2007

Search For Effective Natural Enemies Of Tetranychus Evansi (Acari: Tetranychidae) In Northwest Argentina, Imeuda P. Furtado, Silvana Toledo, Gilberto J. De Moraes, Serge Kreiter, Markus Knapp

All Peer-Reviewed Publications

The mite Tetranychus evansi Baker & Pritchard (Tetranychidae) probably originated in South America. Because of its importance as a tomato pest in Africa, an extensive project has been conducted to detect potentially effective natural enemies in South America for the classical biological control of the pest in Africa. A search for the natural enemies of T. evansi was conducted in the Province of Tucumán, northwestern Argentina, in December 2004, and this report describes the results. One hundred predatory mites of the family Phytoseiidae referring to 11 species were collected on 11 examined species of solanaceous plants. The most abundant phytoseiid …

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Comparison Of Mosquito Control Programs In Seven Urban Sites In Africa, The Middle East, And The Americas, Daniel E. Impoinvil, Sajjad Ahmad, Adriana Troyo, Joseph Keating, Andrew K. Githeko, Charles M. Mbogo, Lydiah Kibe, John I. Githure, Adel M. Gad, Ali N. Hassan, Laor Orshan, Alon Warburg, Olger Calderón-Arguedas, Victoria M. Sánchez-Loría, Rosanna Velit-Suarez, Dave D. Chadee, Robert J. Novak, John C. Beier Oct 2007

Comparison Of Mosquito Control Programs In Seven Urban Sites In Africa, The Middle East, And The Americas, Daniel E. Impoinvil, Sajjad Ahmad, Adriana Troyo, Joseph Keating, Andrew K. Githeko, Charles M. Mbogo, Lydiah Kibe, John I. Githure, Adel M. Gad, Ali N. Hassan, Laor Orshan, Alon Warburg, Olger Calderón-Arguedas, Victoria M. Sánchez-Loría, Rosanna Velit-Suarez, Dave D. Chadee, Robert J. Novak, John C. Beier

All Peer-Reviewed Publications

Mosquito control programs at seven urban sites in Kenya, Egypt, Israel, Costa Rica, and Trinidad are described and compared. Site-specific urban and disease characteristics, organizational diagrams, and strengths, weaknesses, obstacles and threats (SWOT) analysis tools are used to provide a descriptive assessment of each mosquito control program, and provide a comparison of the factors affecting mosquito abatement. The information for SWOT analysis is collected from surveys, focus-group discussions, and personal communication. SWOT analysis identified various issues affecting the efficiency and sustainability of mosquito control operations. The main outcome of our work was the description and comparison of mosquito control operations …

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1139-3159_Nir_Spex, Dagny L. Looper Sep 2007

1139-3159_Nir_Spex, Dagny L. Looper

Publications and Research

No abstract provided.

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An Integrated Framework For Enhancing User Experience For Different Data Services In Multi-Rate Wireless Systems, Sourav Pal Aug 2007

An Integrated Framework For Enhancing User Experience For Different Data Services In Multi-Rate Wireless Systems, Sourav Pal

Computer Science and Engineering Dissertations - Archive

Technological advances in multi\--rate wireless systems have made wireless data services an intrinsic part of human life. An abundance of wireless devices, both in the wireless enabled home multimedia systems as well as in corporate offices, have trigerred an array of research in enhancing the wireless data services. The success and acceptance of these various rich data services Technological advances in multi\--rate wireless systems have made wireless data services an intrinsic part of human life. An abundance of wireless devices, both in the wireless enabled home multimedia systems as well as in corporate offices, have trigerred an array of research …

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Enhanced Targeting In A Haptic User Interface For The Physically Disabled Using A Force Feedback Mouse, Brian Holbert Aug 2007

Enhanced Targeting In A Haptic User Interface For The Physically Disabled Using A Force Feedback Mouse, Brian Holbert

Computer Science and Engineering Dissertations - Archive

Although the human computer interface continues to evolve by engaging sight, voice, sound, and touch to manipulate the environment, the marriage between mouse and graphic based operating systems remains one of the primary relationships through which we interact with the computer. With the advent of haptics it has become possible to enhance the GUI/mouse relationship with the sense of touch using a haptic mouse, opening new avenues of interaction, in particular for those with disabilities. For the majority of users the mouse is an effective and proven device for human computer interaction. However it is not as well suited for …

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