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2006

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Solubility In Supercritical Carbon Dioxide, Syed Asif Abdullah Dec 2006

Solubility In Supercritical Carbon Dioxide, Syed Asif Abdullah

Theses

The different techniques used for the determination of the solubility of compounds in supercritical carbon dioxide are described. A comparative study is made of the methods used in the measurement of the concentration of benzoic acid and caffeine in supercritical carbon dioxide. The difference in measurement techniques did not have much effect on the solubility data at lower pressures. However, at higher pressures, the solubility data obtained by different techniques began to deviate from each other.

Further, the method used by different researchers in generating the solubility data in supercritical carbon dioxide is also discussed. A number of data sheets ...


Numerical Analysis Of The Operation Of A Water Cannon, Teymuraz G. Bitadze Dec 2006

Numerical Analysis Of The Operation Of A Water Cannon, Teymuraz G. Bitadze

Theses

This study was designed to investigate the operational process of a launcher for generation of high speed water projectiles, and it involved the optimization of the geometry of a launcher body. The objective of the optimization of the internal geometry was to increase the effective momentum of the projectile while the optimization of the external geometry resulted in the reduction of the mass of the launcher.

In the course of the optimization of the internal geometry the exit velocity variation was determined, and used to compute an effective projectile momentum, which actually affects a workpiece. In this research, it was ...


Determining Continual Improvement Process Methods Within Quality Management Systems, Diane M. Bové Dec 2006

Determining Continual Improvement Process Methods Within Quality Management Systems, Diane M. Bové

Theses

Institutionalized standards require organizations to actively define and implement quality management systems, which includes active participation in continual improvement efforts. Interpretations and practices vary on implementation methodology.

Traditional views of quality do not integrate the technical disciplines into a defined science which would support a standardized approach for continual improvement implementation.

In order to optimize improvement efforts, a conceptual hypothesis is proposed to integrate quality through combining and collaborating implementation efforts of engineering, control, assurance, improvement and costs. The purpose of this thesis is to establish a roadmap to assist in choosing effective quality improvement methodologies and toolsets that assist ...


Functionalization Of Nanoclays Through Exchange Reactions, Jin Uk Ha Dec 2006

Functionalization Of Nanoclays Through Exchange Reactions, Jin Uk Ha

Theses

A cationic clay (sodium-montmorillonite, MMT) and an anionic clay (hydrotalcite, HT) were treated with two phosphonium based ionic liquids (ILs) and a commercial corrosion inhibitor. Clay modification was examined by TGA, FTLR and WXRD. The cationic clay modified with both ILs had similar thermal stabilities since they contained the same cation although the original anions were different. The thermal stability of the modified clays was higher than that of a commercial organoclay and of clays modified in our group with smaller MW pyridinium and imidazolium based cations. 10 wt% of interchanged cation was found under selected time/temperature treatment conditions ...


Jet Assisted Fluidization Of Nanoparticle Agglomerates, Ayokunle O. Omosebi Dec 2006

Jet Assisted Fluidization Of Nanoparticle Agglomerates, Ayokunle O. Omosebi

Theses

Fluidization serves as a primary operation used to disperse, handle and process nanoparticles, but due to the complications involved with achieving homogenous fluidization of the agglomerates of nanoparticles, several methods have been developed to assist their conventional mode of fluidization.

In this work, the conventional mode of fluidization was coupled with secondary gas flow emerging from a micro jet nozzle. The effect of the jet on the fluidization behavior of various APF and ABF nanopowders was studied and compared with the pure conventional fluidization mode. Generally, experiments were conducted to find the optimal operation of the jet by varying parameters ...


Inverse Solid-Liquid Fluidization Of Aerogel Granules And Its Application In Removing Oil From Water, Gaurav Babubhai Patel Dec 2006

Inverse Solid-Liquid Fluidization Of Aerogel Granules And Its Application In Removing Oil From Water, Gaurav Babubhai Patel

Theses

Fluidization is a very well known unit operation used in the chemical industry for various purposes. Inverse solid-liquid fluidization, where the solid particles to be fluidized are less dense than the fluid, is one of the several different kinds of fluidization being studied for its potential in industrial applications. The present work focuses on finding the hydrodynamic characteristics (minimum fluidization velocity, bed expansion and pressure drop) of an inverse fluidized bed of aerogel granules and using this system to remove oil from an oil-water mixture. The solid particles employed for this study are low density (100 kg/m3) surface ...


Non-Repudiation Secure File Transfer Protocol (Nrsftp), Jerry Chen Dec 2006

Non-Repudiation Secure File Transfer Protocol (Nrsftp), Jerry Chen

Theses

Non Repudiation Secure File Transfer Protocol (NRSFTP) is designed to resolve three main concerns for today's electronic file transfer methodology. The three main concerns are Non-Repudiation, Secure, and Non-Real Time file transfer. Non-repudiation is to assure the receiver that the sender of the document is not an imposter. Secure document transfer is to assure the sender that only the intended receiver will be able to read the document. Non-real-time file transfer is to provide convenient and low cost transportability of the encrypted data from one party to another. With the above three concerns addressed, the NRSFTP protocol can be ...


Multi-Degree Of Freedom Telemanipulation In An Unstructured Environment, Diego Ramirez Dec 2006

Multi-Degree Of Freedom Telemanipulation In An Unstructured Environment, Diego Ramirez

Theses

Two approaches to 6-degrees-of-freedom telemanipulation that will accommodate different needs and skills of potential users with congenital amputation, arthrogryposis, muscular dystrophy and cerebral palsy were developed. One method uses scalable movements (i.e. position and orientation), and the second employs isometric forces and torques without movement. The scalable position approach employs a 6-degress-of-freedom electromechanical stylus whose joint orientations are used by the controlling computer to determine the position and orientation of the robot's end effector via inverse kinematics or by one-to-one matching of the stylus joint angles with those of the manipulator. The isometric method uses the measured forces ...


Implementation Of Stereo Correspondence Algorithms For Multi-Baseline Vision System, Navaneetha Shivram Dec 2006

Implementation Of Stereo Correspondence Algorithms For Multi-Baseline Vision System, Navaneetha Shivram

Theses

The purpose of this study is to determine the impact of varying camera baselines on correspondence and depth estimation. As the baseline increases the resolution of depth increases but finding correspondences is very tedious. On the other hand when cameras are placed close to each other and thereby reducing the baseline distance points in the images are easily matched however depth resolution deteriorates. This problem is solved by using a multi-camera system is used in which the cameras are spaced close to each other along a straight line. Calculating the correspondence along successive camera pairs is relatively easy. These respondences ...


Channel-Predictive Link Layer Arq Protocols In Wireless Networks, Huseyin Dogukan Cavdar Dec 2006

Channel-Predictive Link Layer Arq Protocols In Wireless Networks, Huseyin Dogukan Cavdar

Theses

Communication performance over a wireless channel should be considered according to two main parameters: energy and throughput. The reliable data transfer is a key to these goals. The reliable node-to-node data transfer is performed by link layer protocols. One prominent approach is Automatic Repeat Request (ARQ) protocol. The traditional ARQ protocols attempt to recover the erroneously transmitted frames by retransmitting those frames, regardless of the channel state. Since this channel state unaware behaviour may cause unnecessary retransmissions, traditional ARQ protocols are expected to be energy inefficient. Some ideas have been proposed such as stochastic learning automaton based ARQ, and channel ...


A Dynamic Supine Stander For Subjects With Disabilities Leading To Prolonged Immobility, Luis Alberto Espina Dec 2006

A Dynamic Supine Stander For Subjects With Disabilities Leading To Prolonged Immobility, Luis Alberto Espina

Theses

Bone tissue needs to be exposed to loading in order to stimulate the osteogenic response of the body. Disabilities that lead to prolonged immobility will result in a decrease of the osteogenic processes and an increase in resorption of bone by osteoclast cells. This disuse modeling can lead to osteopenia, osteoporosis, and subsequent non-traumatic fractures. These disabilities are varied in nature and duration, and can include load bearing bone fracture, excessive obesity, spinal cord injury, and cerebral palsy.

The following describes the concept and design of a novel dynamic supine stander that will provide loads simulating ambulation to the lower ...


A Kinematic Analysis Of Sign Language, Chemuttaai C. Koech Dec 2006

A Kinematic Analysis Of Sign Language, Chemuttaai C. Koech

Theses

Signed languages develop among deaf populations and employ manual communication instead of voiced communication. Stokoe attributes classify individual signs in American Sign Language (ASL) and include handshape, hand location, movement, orientation, and facial expression. Signed and oral languages are not mutually understood, and many deaf individuals live in linguistic isolation. This research addresses computer translation between signing and speech, investigating sign duration in sentence context versus in isolation and identifying kinematic sign markers. To date, there has been little study of continuous signing kinematics; it was previously unknown if kinematic markers existed.

Kinematic data were collected from a proficient signer ...


Burmester Curve And Numerical Motion Generation Of Grashof Mechanisms With Perimeter And Transmission Angle Optimization In Mathcad, Peter J. Martin Dec 2006

Burmester Curve And Numerical Motion Generation Of Grashof Mechanisms With Perimeter And Transmission Angle Optimization In Mathcad, Peter J. Martin

Theses

An infinite number of planar four-bar mechanism solutions exist for a series of prescribed rigid-body positions. Given a set of Burmester curves or numerically-generated fixed and moving pivot curves, sorting through the limitless number of possible mechanism solutions to find one that ensures full link rotatibility, satisfies compactness criteria and produces feasible transmission angles can be a daunting task. In this work, two algorithms are developed and presented by which the user can select optimum planar four-bar motion generators (optimum with respect to Grashof criteria, mechanism perimeter criteria and transmission angle criteria) from a set of all mechanism solutions produced ...


Inverse Dynamic Modeling For Characterization Of Spasticity, Katharine Markel Swift Dec 2006

Inverse Dynamic Modeling For Characterization Of Spasticity, Katharine Markel Swift

Theses

Spasticity affects subjects with cerebral palsy, stroke, multiple sclerosis, and traumatic brain injury. The need to develop a deeper understanding of spasticity is driven by the existing limited understanding and the lack of satisfactory interventions for this disabling phenomenon.

An inverse model is implemented to describe the motion in the pendulum knee drop test. Inverse kinematic modeling is implemented to investigate the pathophysiology of spasticity.

Using the equilibrium point hypothesis as a conceptual framework to explain disabled and non-disabled neuromuscular control, it has been demonstrated that the equilibrium point of the passive knee is dynamic and exhibits a pseudo-exponential trajectory ...


J-Horror : A Discourse In Cross-Cultural Communication And Cinematic Hybridity, Marylou Quillen Dec 2006

J-Horror : A Discourse In Cross-Cultural Communication And Cinematic Hybridity, Marylou Quillen

Theses

Film visually communicates the idea of culture, leaving interpretation open to an impressionable audience. Though a genre's recognizable iconography can transcend boundaries, understanding a film's intended message still requires a certain amount of foreknowledge. J-Horror, the common term for Japanese horror among fans, is a sub- genre of Horror that has been catapulted into Hollywood's limelight due to adaptations such as The Ring (2002). Based upon a novel, Ringu, by Koji Suzuki and Nakata Hideo's 1998 cinematic creation of the same name, Gore Verbinski adapted the terrifying plot for Western audiences in his 2002 counterpart.

With ...


The Effect Of Participation In School-Facilitated Community Service Programmes On Students' Self-Esteem, Sense Of Community Engagement And Attitudes To Christianity, Luke Terrence Reed Dec 2006

The Effect Of Participation In School-Facilitated Community Service Programmes On Students' Self-Esteem, Sense Of Community Engagement And Attitudes To Christianity, Luke Terrence Reed

Theses

Increasingly, student orientated service outreach programmes (community service) are being incorporated into the broad curriculum of Australian High Schools. The assumption made is that such programmes have tangible benefits for students, the community and the schools themselves. Schools that operate out of a Christian paradigm have the added incentive of seeking to assist students give personal expression to religious commitment through the service of others. This study tests the assumption that participation in community service or service outreach activities has positive benefits for the students involved. It explores the effect that student involvement in school-facilitated community service programmes has on ...


The Incorporation Of Atmospheric Variability Into Dirsig, Brian Dobbs Dec 2006

The Incorporation Of Atmospheric Variability Into Dirsig, Brian Dobbs

Theses

The goal of this research can be divided into two main areas. The first is to improve the existing manner in which DIRSIG samples and references the atmosphere. The second is to give DIRSIG the ability to incorporate atmospheric inhomogeneities, as well as the ability to accurately model them. DIRSIG has limitations in how it currently samples the atmosphere. From a geometric standpoint, it does not fully sample the energy which is scattered by the atmosphere towards the sensor (upwelled radiance). There are also other geometric issues which lead to inaccurate modeling results. One significant inaccuracy is the fact that ...


Performance Comparison Of Hyperspectral Target Detection Algorithms, Adam Cisz Dec 2006

Performance Comparison Of Hyperspectral Target Detection Algorithms, Adam Cisz

Theses

This thesis performs a performance comparison on existing hyperspectral target detection algorithms. The algorithms chosen for this analysis include multiple adaptive matched filters and the physics based modeling invariant technique. The adaptive matched filter algorithms can be divided into either structured (geometrical) or unstructured (statistical) algorithms. The difference between these two categories is in the manner in which the background is characterized. The target detection procedure includes multiple pre-processing steps that are examined here as well. The effects of atmospheric compensation, dimensionality reduction, background characterization, and target subspace creation are all analyzed in terms of target detection performance. At each ...


A Program Of Self-Esteem Development For Deaf Children In Rural Areas, Candi Daviton Dec 2006

A Program Of Self-Esteem Development For Deaf Children In Rural Areas, Candi Daviton

Theses

Deaf children in rural areas often lack the development of self-esteem essential to their overall development of social and academic skills. Deaf children in rural communities generally have low interpersonal communication and leadership skills. Being isolated with no role model for their identification (deafness) could limit their language acquisition and identity development. The purpose of this project is to develop a special curriculum project which would help initiate a program that would enable deaf children in rural areas to develop self-esteem skills through a one week summer camp program focusing on learning about themselves and related essential self-esteem skills through ...


The Church First Called Christian: The Melkite Church Of Antioch, Elizabeth Ann Reeves Dec 2006

The Church First Called Christian: The Melkite Church Of Antioch, Elizabeth Ann Reeves

Theses

The Catholic Church is made up of many church communities of different rites, with the main classifications being the Roman rites and the Eastern rites of the Catholic Church. With the influx of migrants especially since the Second World War there has been growth in Australia, in the number of Catholics belonging to the many Eastern rites including Byzantine Catholics, Coptic Catholics and Chaldean Catholics. The Second Vatican Council documents encouraged members of the Catholic Church of the Latin traditions to know and understand the rich traditions of the Easterners so that the full manifestation of the catholicity of the ...


Practical Implementation And Performance Analysis On Security Of Sensor Networks, Nidhi Verma Dec 2006

Practical Implementation And Performance Analysis On Security Of Sensor Networks, Nidhi Verma

Theses

A wireless sensor network (WSN) is a network made of thousands of sensing elements called as nodes with wireless capabilities. Their application is varied and diverse ranging from military to domestic and household. As the world of self-organizing sensor networks tip to the edge of maximum utilization, their wider deployment is adding pressure on the security front. Powerful laptops and workstations make it more challenging for small sensors. In addition, there are many security challenges in WSN, e.g- confidentiality, authentication, freshness, integrity etc. Contributions of this work are as follows: “Symmetric” security implementation: This thesis work designs a symmetric-key ...


Graphical Microcode Simulator With A Reconfigurable Datapath, Brian Vanburen Dec 2006

Graphical Microcode Simulator With A Reconfigurable Datapath, Brian Vanburen

Theses

Microcode is a symbolic way to simplify control design that allows changing, testing and updating the control unit of processors. By changing the microcode, the same datapath can be used for an entirely different application, such as supporting a completely different instruction set. For these reasons, a majority of control units in modern day processors are microcoded. The object was to investigate and implement a graphical microcode simulator with a reconfigurable datapath and microcode format. By allowing a wide configuration of the datapath, many types of logical processors can be designed and simulated. The resulting implemented simulator is able to ...


Enhancements Of A Three Dimensional Target Model For Deep Ground Penetrating Radar Systems, Lonnie Parker Dec 2006

Enhancements Of A Three Dimensional Target Model For Deep Ground Penetrating Radar Systems, Lonnie Parker

Theses

Both commercial and military industries incorporate the use of Ground Penetrating Radar (GPR). In the case of the military, a stationary object, such as a bunker or tunnel, can be detected. Even high-resolution, three-dimensional (3D) and twodimensional (2D) imagery of energy reflected by the target and its surrounding environment can be produced. This is accomplished using multiple scene perspectives inherent in advanced Synthetic Aperture Radar (SAR) techniques. Although underground target detection can be successful, the return data, usually suffers a significant degree of signal degradation due to the ground medium and target composition. A valid theoretical target model must account ...


Reversible Addition-Fragmentation Chain-Transfer (Raft) Polymerization In Grafting Polymer Chains From Tio2 Nanoparticles, Joseph Lott Dec 2006

Reversible Addition-Fragmentation Chain-Transfer (Raft) Polymerization In Grafting Polymer Chains From Tio2 Nanoparticles, Joseph Lott

Theses

A phosphonate coupling molecule containing a vinyl double bond was synthesized and anchored onto the surface of TiO2 nanoparticles. Diffuse reflectance infra-red (DRIFT) spectroscopy confirmed the presence of the coupling molecule on the particulate surface while thermogravimetric analysis revealed the coupling molecule covered 28% of the surface. Methyl methacrylate was free radically polymerized through the immobilized vinyl bond on the surface in the presence of the reversible additionfragmentation chain-transfer (RAFT) agent 4-cyanopentanoic acid dithiobenzoate using 2,2'-azobisisobutylnitrile (AIBN) as an initiator. DRIFT measurements confirmed the presence of methacrylate groups on the surface. Differential scanning calorimetry detected a weak glass ...


Hindsight: The Moving Image And The Post-Photographic, John Aäsp Dec 2006

Hindsight: The Moving Image And The Post-Photographic, John Aäsp

Theses

My recent video work employs a chronophotographic template to play on the idea of extracting knowledge from a fragmented visual sequence. Rather than freezing separate frames as instances of motion (as seen in a Muybridge sequence), motion is left within the sequence—looping continuously to create a paradox of stasis and dynamism. Using found footage from an older film era or clips from modern television, sequences are recaptured and reorganized to create a media-hybridized moment standing in a new temporal flow.

Influenced by the philosophy of Henri Bergson, this work explores a gray area between cinema and photography, motion and ...


Investigation Of Poly[4(5)-Vinylimidazole] Composites And Their Potential As Proton Conductive Membranes, Jinghang Wu Dec 2006

Investigation Of Poly[4(5)-Vinylimidazole] Composites And Their Potential As Proton Conductive Membranes, Jinghang Wu

Theses

In order to demonstrate proton conductivity in an imidazole polymer system, novel composite proton exchange membranes were fabricated by casting films of poly[4(5)-vinylimidazole/vinylimidazolium trifluoromethylsufonylimide] and poly(vinylidene fluoride)], PVdF, from mixed dimethylformamide (DMF) solutions. The phase, composition and morphology of these composites were examined by differential scanning calorimetry (DSC), and hot stage polarized microscopy. Thermal stability was evaluated by thermal gravimetric analysis (TGA). Proton conductivity was in a fuel cell test fixture evaluated at GM Fuel Cell Activities in Honeoye Falls, NY. DSC thermograms were characterized by a crystalline melt for the PVdF component at ∼169 ...


Multi-Variant Analysis Of Real-World Environmental Variables Affecting Image Fading On Outdoor Synthetic Inkjet Substrates, Elizabeth Kline Dec 2006

Multi-Variant Analysis Of Real-World Environmental Variables Affecting Image Fading On Outdoor Synthetic Inkjet Substrates, Elizabeth Kline

Theses

The permanence of large format, outdoor inkjet signs is a concern for many advertisers and companies creating signs that will be displayed for years or months in such an environment. The permanence industry has focused their research on using equipment to simulate these outdoor conditions the prints face to gauge their fading properties. This research took a more direct approach by placing the prints in an actual outdoor environment and tracking the rate of color change (∆Eab), and the environmental variables. A multiple regression analysis of the data was then used to create prediction models and to eliminate environmental variables ...


Proteome Analysis Of Pseudomonas Putida Kt2440 Using 2d Gel Electrophoresis And Lc/Esi-Q-Tof Mass Spectrometry, Archana Pandey Dec 2006

Proteome Analysis Of Pseudomonas Putida Kt2440 Using 2d Gel Electrophoresis And Lc/Esi-Q-Tof Mass Spectrometry, Archana Pandey

Theses

The proteome can be defined as the complete set of global protein expression by an organism at any given time. It is this gene expression rather than genome itself that is responsible for most of the reactions taking place within a cell. Tools such as two-dimensional polyacrylamide gel electrophoresis (2D-PAGE) and mass spectroscopy (MS) are often utilized for the analysis and identification of the proteins that constitute the proteome. This thesis provides a general overview of proteomics and describes the underlying processes, mechanisms and technologies associated with modern proteomic analysis with specific emphasis on the use of electrospray ionization time ...


Investigation Of The Band Structures And Optical Properties Of Super Lattices, Sheikha Ahmed Awad Alnaeme Dec 2006

Investigation Of The Band Structures And Optical Properties Of Super Lattices, Sheikha Ahmed Awad Alnaeme

Theses

Group III nitrides are highly attractive materials because of their great potential for the development of optoelectronic devices in short wavelength, semiconductor lasers and optical light-emitters and detectors. GaN, AlN and InN are considered as the most important compounds in this class of materials. In this work, we present a theoretical investigation of the electronic properties (band structure, density of state and contour maps of the charge density distribution) and optical properties (refractive index, absorption and dielectric constants). Also, we investigate the band structures and optical properties of AlN/GaN and InN/GaN super lattices. A full-potential linearized plane-wave (FPLAPW ...


The Relationship Of Morality, Ethics And Justice To Quality Of Worklife, Pieter Joubert Kriel Dec 2006

The Relationship Of Morality, Ethics And Justice To Quality Of Worklife, Pieter Joubert Kriel

Theses

One of the most exciting recent developments in the social sciences has been the rapid formulation and acceptance of evolutionary psychology. Evolutionary psychology (EP) theory informs us that the human mind has certainly evolved and innate mechanisms have been shaped by our ancient social history. Consequently, specifically-evolved mental mechanisms exist that assist the human mind in dealing with complex social phenomena, such as cooperation. Evolutionary psychology theorists posit that for human beings to maximise the benefits of cooperation there need to be efficient ways for individuals to determine whether other members of the social group are operating equitably. Central to ...