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2006

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Capacity Of Single-Radio Ad Hoc Networks For Handling High Bit-Rate Real-Time Internet Applications, Mehran Abolhasan, Tadeusz A. Wysocki, Daniel Franklin, Justin Lipman Dec 2006

Capacity Of Single-Radio Ad Hoc Networks For Handling High Bit-Rate Real-Time Internet Applications, Mehran Abolhasan, Tadeusz A. Wysocki, Daniel Franklin, Justin Lipman

Department of Electrical and Computer Engineering: Faculty Publications (to 2015)

Until now, the main focus in ad hoc networking has been improving Routing and Medium Access Control (MAC) Strategies. As a result, a diverse range of routing and MAC protocols have been proposed. To evaluate these protocols, much of the existing research has been based on simulation scenarios which assume ideal channel conditions and low node and traffic densities. Therefore, despite a few studies which have shown the performance limitations of ad hoc networks theoretically, there has not been many simulation studies performed which investigate the performance of ad hoc networks under a high node and traffic density. This paper …

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Novel Capacitance Extraction Method Using Direct Boundary Integral Equation Method And Hierarchical Approach, L. (Lijun) J. Jiang, B. J. Rubin, J. D. Morsey, H. T. Hu, A. Elfadel Dec 2006

Novel Capacitance Extraction Method Using Direct Boundary Integral Equation Method And Hierarchical Approach, L. (Lijun) J. Jiang, B. J. Rubin, J. D. Morsey, H. T. Hu, A. Elfadel

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, a novel hierarchical capacitance extraction method is introduced. It takes advantage of surface integral equations to have far less unknowns than the volumetric method. It uses the "divide and conquer" strategy to hierarchically solve the dense capacitance matrix efficiently. It partitions the problem into small regions (cells) automatically and each region is analyzed separately. An inverse binary-tree browse procedure is employed to combine cell capacitance matrixes from leafy level of the tree to the root. A global capacitance matrix is obtained at the root without computing charge distribution. Benchmarks using the developed code CSurf are provided to …

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A Clustering Approach In Sensor Network Time Synchronization, Ramesh Krishnaram Dec 2006

A Clustering Approach In Sensor Network Time Synchronization, Ramesh Krishnaram

Theses

In recent years tremendous technological advances have led to the development of low-cost sensors capable of data processing activities. These sensor nodes are organized in to a network typically called wireless Sensor Network. WSN's are based on the principle of "Data Fusion" where the data collected from each sensor node is condensed into one meaningful result: Data Fusion is achieved by exchanging messages between the sensors. These messages are time stamped by each sensor node's local clock fuse reading. As noted in various references, Time Synchronization is a common feature used in networking in order to give the nodes a …

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Development And Implementation Of Optimized Energy-Delay Sub-Network Routing Protocol For Wireless Sensor Networks, James W. Fonda, Maciej Zawodniok, S. Jagannathan, Steve E. Watkins Dec 2006

Development And Implementation Of Optimized Energy-Delay Sub-Network Routing Protocol For Wireless Sensor Networks, James W. Fonda, Maciej Zawodniok, S. Jagannathan, Steve E. Watkins

Electrical and Computer Engineering Faculty Research & Creative Works

The development and implementation of the optimized energy-delay sub-network routing (OEDSR) protocol for wireless sensor networks (WSN) is presented. This on demand routing protocol minimizes a novel link cost factor which is defined using available energy, end-to-end (E2E) delay and distance from a node to the base station (BS), along with clustering, to effectively route information to the BS. Initially, the nodes are either in idle or sleep mode, but once an event is detected, the nodes near the event become active and start forming sub-networks. Formation of the inactive network into a sub-network saves energy because only a portion …

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Visual Intent Recognition In A Multiple Camera Environment, Matthew Erhard Dec 2006

Visual Intent Recognition In A Multiple Camera Environment, Matthew Erhard

Theses

Activity recognition is an active field of research with many applications for both industrial and home use. Industry might use it as part of a security surveillance system, while home uses could be in applications such as smart rooms and aids for the disabled. This thesis develops one component of a “smart system” that can recognize certain activities related to the subject’s intent, i.e. where subjects concentrate their attention. A visual intent activity recognition system that operates in near real-time is created, based on multiple cameras. To accomplish this, a combination of face detection, facial feature detection, and pose estimation …

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A Biologically Plausible System Approach For Noise Robust Vowel Recognition, Ismail Uysal, Harsha Sathyendra, John G. Harris Dec 2006

A Biologically Plausible System Approach For Noise Robust Vowel Recognition, Ismail Uysal, Harsha Sathyendra, John G. Harris

Electrical and Computer Engineering Faculty Research & Creative Works

Present day commercial automatic speech recognition (ASR) systems still pale in comparison to the human ability to recognize speech. For decades, people tried to mimic biology for machine recognition tasks and ASR is no exception. Widely used and accepted Mel Frequency Cepstral Coefficients, for example, try to develop better filter banks by looking at the distribution of the hair cells along the basilar membrane. However, all these approaches stem only from topological and anatomical considerations. This research proposes to take this biological inspiration one step further by imitating some of the dynamical computation of our auditory system via describing a …

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Geomorphic Considerations For Restoration Of Headwater Streams Impacted By Mountaintop Mining Hollow Fills., Ben Mater 1982- Dec 2006

Geomorphic Considerations For Restoration Of Headwater Streams Impacted By Mountaintop Mining Hollow Fills., Ben Mater 1982-

Electronic Theses and Dissertations

Within the Appalachian hills of eastern Kentucky, large-scale coal mining operations are directly altering the headwater landscape through the construction of hollow fills. These man-made landforms and their associated in-stream structures alter a longterm, continuous morphologic evolution driven by the natural interaction of erosive forces and material of the earth's surface. Post-mining channel morphology, hillslopes, and hollow fills continue to actively evolve in response to erosive forces. Aquatic ecosystem functionality and hollow fill stability may be jeopardized by this condition, yet they may be preserved through efforts to restore or re-create channel morphology more representative of the natural headwater stream. …

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A Programmable Mask For Direct Write Lithography., Kunal Pharas 1979- Dec 2006

A Programmable Mask For Direct Write Lithography., Kunal Pharas 1979-

Electronic Theses and Dissertations

Lithographic processes for printing device structures on integrated circuits plays a major role in the semiconductor industry. This project aims at designing and fabricating a programmable mask for a direct write lithography system which can achieve higher throughput at a reasonable cost for the semiconductor industry in the future. The device has apertures of different sizes which can be used as programmable masks by opening and closing the shutters over them. The shutters are actuated by electrostatic comb drive actuators which are microfabricated nickel structures electroplated on copper over a sacrificial layer and are released later by a sacrificial etch. …

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Mobility-Based Predictive Call Admission Control And Resource Reservation For Next-Generation Mobile Communications Networks., Sherif Said Rashad 1974- Dec 2006

Mobility-Based Predictive Call Admission Control And Resource Reservation For Next-Generation Mobile Communications Networks., Sherif Said Rashad 1974-

Electronic Theses and Dissertations

Recently, the need for wireless and mobile communications has grown tremendously and it is expected that the number of users to be supported will increase with high rates in the next few years. Not only the number of users, but also the required bandwidth to support each user is supposed to increase especially with the deploying of the multimedia and the real time applications. This makes the researchers in the filed of mobile and wireless communications more interested in finding efficient solutions to solve the limitations of the available natural radio resources. One of the important things to be considered …

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A Robotics Testbed : The Design & Implementation With Applications., Travis Alan Riggs Dec 2006

A Robotics Testbed : The Design & Implementation With Applications., Travis Alan Riggs

Electronic Theses and Dissertations

In order to study the movements of autonomous mobile robots, a tool is needed to quantify those movements. A testbed is an apparatus that provides a designated space for multiple mobile robots while tracking their position in real-time. That tracking information can also be communicated to the robots themselves to serve as closed-loop feedback. With this tool, many techniques can be developed and validated through various control experiments. A design and implementation of a testbed is presented here. The testbed is analyzed for its performance and several applications are presented to demonstrate its usefulness.

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Multivariate Discretization Of Continuous Valued Attributes., Ehab Ahmed El Sayed Ahmed 1978- Dec 2006

Multivariate Discretization Of Continuous Valued Attributes., Ehab Ahmed El Sayed Ahmed 1978-

Electronic Theses and Dissertations

The area of Knowledge discovery and data mining is growing rapidly. Feature Discretization is a crucial issue in Knowledge Discovery in Databases (KDD), or Data Mining because most data sets used in real world applications have features with continuously values. Discretization is performed as a preprocessing step of the data mining to make data mining techniques useful for these data sets. This thesis addresses discretization issue by proposing a multivariate discretization (MVD) algorithm. It begins withal number of common discretization algorithms like Equal width discretization, Equal frequency discretization, Naïve; Entropy based discretization, Chi square discretization, and orthogonal hyper planes. After …

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The Effect Of Modular Tapered Fluted Stems On Proximal Stress Shielding In The Human Femur., Justin Steve Conway Dec 2006

The Effect Of Modular Tapered Fluted Stems On Proximal Stress Shielding In The Human Femur., Justin Steve Conway

Electronic Theses and Dissertations

Modular hip implants are currently being used in total hip arthroplasty revision procedures because it is common to have little or no bone left in the proximal region of the femur and it is difficult to accurately size implants based off of radiographs or other medical imaging techniques. The effect of modular systems using tapered fluted stems on proximal stress shielding in the human femur is the focus of this study. Seven modular implants were press-fit into seven femurs, where there was little or no contact between the modular body and the test femur. Finally, hydroxyapatite bone cement was added …

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Analysis Of Single-Point Test To Determine Skin Factor, Abbas Belyadi Dec 2006

Analysis Of Single-Point Test To Determine Skin Factor, Abbas Belyadi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Single-point test results can be used to obtain information regarding the degree of damage in gas wells in the gas storage reservoirs. Single-point test is neither time-consuming nor costly to determine the productivity of a well. Furthermore, flow stabilization times would be short in high permeability gas storage reservoirs. Generally, a four-point test is conducted first to establish the deliverability relation. After some period of time, namely one year, a single-point test could be conducted. The results of the single-point and four-point tests can then be compared in order to identify any alteration in well performance.;The objective of this research …

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Ground Penetrating Radar (Gpr) Based System For Nondestructive Detection Of Interior Defects In Wooden Logs, Dayakar Devaru Dec 2006

Ground Penetrating Radar (Gpr) Based System For Nondestructive Detection Of Interior Defects In Wooden Logs, Dayakar Devaru

Graduate Theses, Dissertations, and Problem Reports (ETD)

A previous study used GPR to scan logs and the scanned data was processed and analyzed using RADAN software. This data processing using RADAN software needs an expert and is time consuming. Also, the output from RADAN software cannot be used to generate manufacturing process instructions since it will be in the form of an image. For online implementation of GPR scanning, a quick automated defect detection system with numerical output is required.;To incorporate automated defect detection system, a MATLAB algorithm has been developed. Validation of the MATLAB algorithm output has been done by comparing with the results of RADAN …

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Effectiveness Of Aquatic Phytoremediation Of Nutrients Via Watercress (Nasturtium Officinale), Basil (Ocimum Basilicum), Dill (Anethum Graveolens) And Lettuce (Lactuca Sativa) From Effluent Of A Flow-Through Aquaculture Operation, Derek J. Dyer Dec 2006

Effectiveness Of Aquatic Phytoremediation Of Nutrients Via Watercress (Nasturtium Officinale), Basil (Ocimum Basilicum), Dill (Anethum Graveolens) And Lettuce (Lactuca Sativa) From Effluent Of A Flow-Through Aquaculture Operation, Derek J. Dyer

Graduate Theses, Dissertations, and Problem Reports (ETD)

Effluent from the aquaculture industry is a source of nutrient loading upon water bodies nationwide. Aquaponics, the simultaneous cultivation of fish and plants, has the potential to effectively reduce nutrient concentrations through phytoremediation, with the added benefit of producing a valuable crop. The purpose of this preliminary research was to determine if watercress ( Nasturtium officinale) could be used to reduce nutrients from aquaculture effluent in sufficient concentrations to be functional as a remediation technique. Additionally, basil (Ocimum basilicum), dill (Anethum graveolens) and lettuce (Lactuca sativa) were correspondingly examined. Conditions which affected plant growth versus nutrient remediation were also to …

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Recognition Capacity Of Biometric-Based Systems, Francesco P. Nicolo Dec 2006

Recognition Capacity Of Biometric-Based Systems, Francesco P. Nicolo

Graduate Theses, Dissertations, and Problem Reports (ETD)

Performance of biometrics-based recognition systems depends on various factors: database quality, image preprocessing, encoding techniques, etc. Given a biometric database and a selected encoding method, the capability of a recognition system is limited by the relationship between the number of classes that the recognition system can encode and the length of encoded data describing the template at a specific level of distortion. In this work, we evaluate constrained recognition capacity of biometric systems under the constraint of two global encoding techniques: Principal Component Analysis and Independent Component Analysis. The developed methodology is applied to predict capacity of different recognition channels …

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Selection Of Pilot Buses For Var Support And Voltage Stability Risk Analysis, Talpasai Lakkaraju Dec 2006

Selection Of Pilot Buses For Var Support And Voltage Stability Risk Analysis, Talpasai Lakkaraju

Graduate Theses, Dissertations, and Problem Reports (ETD)

The primary objective of this thesis is to develop an index for the placement of reactive power support devices to ensure reliable operation of power systems. It is especially aimed at improving the load voltage profile and system security when loading is increased. Maintaining a good system voltage profile and security is an important aspect in voltage stability studies, especially with the ever increasing power consumption and system disturbances or contingencies. A new VAR support placement algorithm is developed using a standard continuation power flow and N-1 contingency criterion to pinpoint the best locations for the placement of VAR devices. …

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Software Application For Emergency Responders, Safer 2.0, Saritha Reddy Potula Dec 2006

Software Application For Emergency Responders, Safer 2.0, Saritha Reddy Potula

Graduate Theses, Dissertations, and Problem Reports (ETD)

The SAFER 2.0 was developed as a web based information system for the First Responders involved in dealing with the hazardous materials incidents. The software tool enables First Responders to view and identify the substances involved in a hazard via a secure Internet connection. The tool also aids in identifying the unknown substances based on the physical description (color, odor, texture, gas/liquid, etc.), symptoms and other information available at the site of the incident. The system is based on the 2004 North American Emergency Response Guidebook (ERG2004) and NIOSH Pocket Guide (NPG). ERG2004 was developed for use by firefighters, police, …

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Analysis Of Photonic Crystal Defects For Biosensing Applications, Naveen Kumar Paturi Dec 2006

Analysis Of Photonic Crystal Defects For Biosensing Applications, Naveen Kumar Paturi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Photonic Crystals (PCs) have been the subject of intense study from their inception. These structures provide precise control of optical transmission properties through the choice of their periodic lattice parameters and materials with which they are fabricated. The sensitivity of optical properties of photonic crystals to the changes in refractive index at one or more lattice sites makes these structures potentially very attractive devices for developing a biosensor. Very small changes in the refractive index of one or more defect sites can be sensed accurately using these nano size structures. This work deals with the modeling and theoretical evaluation of …

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Cooperative Diversity Using Mimo Systems, Ramachandran Rajagopalan Dec 2006

Cooperative Diversity Using Mimo Systems, Ramachandran Rajagopalan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Multipath fading is one of the primary factors for degrading the performance in a wireless network. Information theoretic and past research suggest the use various diversity techniques to combat fading in wireless networks. Antenna diversity, a form of diversity technique, when incorporated in a wireless transceiver increases the system capacity and is one of the effective methods to combat fading in wireless systems. Also, recent research by Laneman et.al., Sendonaris et.al. suggests that cooperation among users in a wireless networks is an effective approach for a better signal reception in multipath fading environments. The diversity gains obtained by cooperation among …

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Statistical Estimation Of Strain Energy Release Rate Of Delaminated Composites, Rajesh Vijayaraghavan Dec 2006

Statistical Estimation Of Strain Energy Release Rate Of Delaminated Composites, Rajesh Vijayaraghavan

Graduate Theses, Dissertations, and Problem Reports (ETD)

An improved two-sublaminate model based on first-order shear deformation theory is implemented in a general-purpose finite element software (ANSYS) to study delaminated composite plates. Double cantilever beam and end-notched flexure models of unidirectional and multidirectional composite plates with mid-plane and offset delaminations are analyzed. The total strain energy release rate and the mode-I, mode-II and mode-III components are evaluated using a plate-theory-based crack-closure technique.;The effects of variation of material properties, ply thickness, fiber orientation, coefficient of friction between the crack surfaces, finite element mesh density and virtual crack-closure length and applied load on the mixed-mode strain energy release rates are …

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Forwarding Strategies And Optimal Power Allocation For Coherent And Noncoherent Relay Networks, Somak Datta Gupta Dec 2006

Forwarding Strategies And Optimal Power Allocation For Coherent And Noncoherent Relay Networks, Somak Datta Gupta

Graduate Theses, Dissertations, and Problem Reports (ETD)

In fading wireless channels, relays are used with the aim of achieving diversity and thus overall performance gain. In cooperative relay networks, various forwarding techniques like amplify and forward (AF) and decode and forward (DF) are used at the relay for better throughput and improved BER performance than traditional multihop systems. In a power constrained environment, the performance can be further improved by using an optimal power allocation strategy. The relative position of the relay with respect to the source and destination also has an immense effect on the efficacy of the relay.;We position the relay at various positions in …

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A Hairy Predicament: The Problem With Long Hair In The 1960s And 1970s, Andrew Robert Herrick Dec 2006

A Hairy Predicament: The Problem With Long Hair In The 1960s And 1970s, Andrew Robert Herrick

Graduate Theses, Dissertations, and Problem Reports (ETD)

By the mid-1970s long hair worn by much of the American youth evoked little comment and indeed was considered fashionable. But during much of the previous two decades male hair length was a contentious issue that divided the generations. The struggle over hair in many ways epitomized the sixties generation's challenge to authority and their claim to individual rights. During the era, the meaning of long hair changed dramatically from what it was during the fifties. It began as a symbol of youth culture rebellion linked to music. By the latter part of the sixties, however, it became associated with …

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Performance Evaluation Of The Bd Phoenix Automated Microbiology System In Meropenem Susceptibility Testing Of Clinical Pseudomonas Aeruginosa Isolates, Gulcin Bayramoglu, Ibrahim C. Acuner, Melda Sinirtas, Suna Gedikoglu, Belma Durupinar Dec 2006

Performance Evaluation Of The Bd Phoenix Automated Microbiology System In Meropenem Susceptibility Testing Of Clinical Pseudomonas Aeruginosa Isolates, Gulcin Bayramoglu, Ibrahim C. Acuner, Melda Sinirtas, Suna Gedikoglu, Belma Durupinar

Saudi Medical Journal

No abstract provided.

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Prevalence Of Metabolic Syndrome In Oman Using The International Diabetes Federation's Criteria, Jawad A. Al-Lawati, Pekka Jousilahti Dec 2006

Prevalence Of Metabolic Syndrome In Oman Using The International Diabetes Federation's Criteria, Jawad A. Al-Lawati, Pekka Jousilahti

Saudi Medical Journal

No abstract provided.

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Mandatory Child Restraint Systems In The Arabian Gulf Countries. The Time Has Come, Raymond A. Smego Dec 2006

Mandatory Child Restraint Systems In The Arabian Gulf Countries. The Time Has Come, Raymond A. Smego

Saudi Medical Journal

No abstract provided.

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Ereview, Print Industry Center Dec 2006

Ereview, Print Industry Center

RIT Digital Archives

No abstract provided.

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Print Review, Print Industry Center, Patricia Cost Dec 2006

Print Review, Print Industry Center, Patricia Cost

RIT Digital Archives

The PrintReview is produced quarterly exclusively for Affiliates of the Printing Industry Center at RIT.

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Its News December 2006, Information & Technology Services Dec 2006

Its News December 2006, Information & Technology Services

RIT Digital Archives

The New Microsoft Office Professional 2007 Presents File Compatibility Challenges||New Academic Planning System Launched||Defying the Laws of Gravity||Ctrax and the State of Unauthorized P2P Music Sharing at RIT||ITS Staff News

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Working Toward Democracy: Thurgood Marshall And The Constitution Of Kenya, Mary L. Dudziak Dec 2006

Working Toward Democracy: Thurgood Marshall And The Constitution Of Kenya, Mary L. Dudziak

Duke Law Journal

This Article is a work of transnational legal history. Drawing upon new research in foreign archives, it sheds new light on the life of Thurgood Marshall, exploring for the first time an episode that he cared very deeply about. his work with African nationalists on an independence constitution for Kenya. The story is paradoxical, for Marshall, a civil rights legend in America, would seek to protect the rights of white landholders in Kenya who had gained their land through discriminatory land laws, but were soon to lose political power. In order to understand why Marshall would take pride in entrenching …

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