Digital Commons Network^™

Synthesis Of Low K1 Projection Lithography Utilizing Interferometry, Frank Cropanese

Theses

Interference lithography has been widely utilized as a tool for the evaluation of photoresist materials, as well as emerging resolution enhancement techniques. The interferometric approach is both simple and inexpensive to implement, however it is limited in its ability to examine the impact of defocus due to the inherently large DOF (Depth-of-Focus) in two-beam interference. Alternatively, the demodulation of the aerial image that occurs as a result of defocus in a projection system may be synthesized using a two pass exposure with the interferometric method. The simulated aerial image modulation for defocused projection systems has been used to calculate the …

Development Of Nickel Silicide For Integrated Circuit Technology, Phu H. Do

Theses

Continuous advancements in devices, materials and processes have resulted in integrated circuits with smaller device dimensions, higher functionality and higher speed. The complementary metal oxide semiconductor (CMOS) technology has been the engine of this success. The MOS transistor is shrinking following the Moore's Law over the last several decades. As the device dimensions are approaching nanometer regime, parasitic resistance, capacitance and inductance are beginning to influence the performance significantly.

Self-aligned silicide process was developed in mid eighties that allowed reduction of gate and contact resistance by using metal silicides as low resistivity materials. The process also enabled higher packing density. …

Dynamic Mechanical Properties Of Geopolymer-Polymer Composites, Kunal Shrotri

Theses

Dynamic mechanical properties and rheology of the organic polymer modified inorganic polymer systems synthesized from metakaolin were studied and evaluated. These inorganic polymers, popularly known as geopolymers, possess a set of excellent characteristics which includes high compressive strength, high temperature and fire resistance, acid resistance, heavy ion fixation, low temperature curing, good surface finish, low cost raw materials and are environment friendly. Geopolymers are a relatively new class of engineering materials and are in the process of finding their way to industrial products. A few of the problems that are holding back the development of these materials are the control …

Fpga Implementation Of Reed Solomon Codec For 40gbps Forward Error Correction In Optical Networks, Kenny Chung Chung Wai

Theses

Reed-Solomon error correcting codes (RS codes) are widely used in communication and data storage systems to recover data from possible errors that occur during data transfer. A growing application of RS codes is Forward Error Correction (FEC) in the Optical Network (OTN G.709), which uses RS(255,239) to support the OTU-3 (43.018 Gbps) standard. There have been considerable efforts in the area of RS architecture for ASIC implementation. However, there appears to be little reported work on efficient RS codec (encoder and decoder) for Field Programmable Gate Arrays (FPGAs), which has increasing interests in industry.

This thesis investigates the implementation and …

A Recipe, Bradley Josephine Selin

Theses

This thesis describes the author's master's exhibition of ceramic storage containers. It discusses how the work expresses the theme of gardening. The author also includes images of some of the works which have influenced her design.

Medical Equipment Planning And Construction Of A Interventional Neuroradiology Suite, Furqan Elahi

Theses

New York-Presbyterian Hospital is one of the most comprehensive university hospitals in the world, with leading specialists in every field of medicine. It is composed of two renowned medical centers, New York-Presbyterian Hospital/Columbia University Medical Center and New York-Presbyterian Hospital/Weill Cornell Medical Center. The hospital's strategic planning group identified the need to expand the Interventional Neuroradiology service that the hospital provides. This brought upon the need to form a committee to plan the construction of an Interventional Neuroradiology. The problem statement of this thesis is to prepare a best practices guideline from a clinical engineering perspective on constructing the three …

Assessment And Change : Using Verbal Analysis To Update Criteria In The Technical Communication Service Course, Michele-Andrea Fields

Theses

Assessment is the discussion, research, and analysis of information, concluding with a value of the information discussed. This project is a qualitative analysis of a Technical Communication service course assessment calibration session held in May 2005, which was recorded. After transcribing the discussion, I am using NVivo, a data coding and modeling program, to analyze the terms, categories, concepts, processes, and abstract ideas. In addition, the paper looks at how the current paradigm for technical service courses is shifting toward electronic writing and document design. The conclusion applies the results to the ongoing curriculum and criteria assessment in English 352.

Doppler Ultrasound Technique Used To Determine The Blood Flow Viscosity In The Middle Cerebral Artery Of A Canine Animal Model, Raj P. Ganpath

Theses

The cerebral blood flow velocity in the middle cerebral artery of an canine animal model was measured using the Doppler Ultrasound technique. A transducer was designed with a 20 MHz piezoelectric crystal and used for the application. An in vitro calibration system was designed and machined for the purpose of testing and calibrating every transducer before using it in vivo. Preliminary tests included experiments on the in vitro system and measurement of blood flow velocity in the human wrist artery (metacarpal artery). The effect of using different transmission media (agarose and gelatin) was determined through the many in vitro and …

Model Driven Architecture - A Tool For Enterprise Architecture : A Look At Emergency Response Systems, Ritu Lamba

Theses

Today's fast changing markets and technology drive software industry to deliver high quality enterprise software solutions. The enterprise system architecture should be designed to keep business functions separate from technological implementation to accommodate the fast changing business environment.

In this thesis we have studied the current best practices in defining enterprise architectures and Zachman's framework in particular. We have further examined the Model Driven Architecture (MDA) approach and its application to enterprise architecture definition. MDA separates the business logic from the underlying platform technology and defines a representation model based on precise semantics. Zachman's framework defines a set of views …

Non-Invasive Monitoring Of Bone Health Using Ultrasound, Nashit Jahan Meem

Theses

Bone fractures are estimated to afflict everyone at least once in his/her lifetime. Monitoring this becomes crucial especially when it comes to athletes in order for them to safely resume their regular activities as soon as possible. Technologies currently employed are either very expensive or use harmful radiation.

Ultrasound can monitor bone fractures in a non-invasive manner, as discussed in United States Patent # 5143069. Three transducers are mounted over the test specimen. A pulse generator excites the transmitting receiver. The second receiver is mounted next to the transmitter and acts as a reference receiver that displays the response across …

A Study Of Steganography And Steganalysis, Nisant Nalla

Theses

Steganography is the art of hiding the fact that communication is taking place, by hiding information in other information. Steganalysis is the study of methods to detect the presence of hidden messages. The Steganography and Steganalysis are very much interdependent. The people in the Steganography domain try to develop stronger methods to hide data in different media. This spurs the discovery of new steganalysis methods which can break these Steganography methods. This is vital for the development of these fields. The internet has been growing by leaps and bounds. There is an increasing need for information security. It has been …

Electrochemical Corrosion Testing Of Boronized And Unboronized Steels, Kranthi K. Pallegar

Theses

Boronizing is a thermo-chemical surface coating technique with which surface properties of materials are enhanced substantially. One of these properties is corrosion resistance. Corrosion resistance testing has been performed in many ways right from the traditional weight loss methods to the latest electrochemical techniques. These electrochemical techniques are more reliable and less time consuming and hence are widely accepted for corrosion testing in the industry.

In the present work, direct current (D.C) corrosion testing studies of both boronized and unboronized steels have been discussed. Three types of steels, AISI 1018, AISI 4340 and AISI 304 stainless steel, were considered for …

Qt Variability Calculation Using A Template Matching Algorithm And Power Spectral Analysis, Theodore Sami Rizkalla

Theses

ECG interval measurement and variability analysis has proven to be a useful tool in investigating autonomic nervous system function. Traditionally, the R to R interval has been the thrust of research conducted in this field. QT variability is another topic on which little research has been done.

This thesis uses an algorithm proposed by Dr. Berger, published in 2003. The algorithm stretches the template in the time domain, and composes a sum-squared error function, which is minimized to find the scaling factor for that beat. These scaling factors are compiled into an array, and an interpolated signal is generated of …

Classifying Rna Secondary Structures Using Support Vector Machines, Prathy Usha Sunkara

Theses

In contrast to DNA, RNA prevails as a single strand. As a consequence of small self-complementary regions, RNA commonly exhibits an intricate secondary structure, consisting of relatively short, double helical segments alternated with single stranded regions. The amount of sequence data available is rising rapidly day by day. One of the problems encountered on a specific molecule is finding the relevant data between the massive number of other sequences to be done by reading lists with a short description of all new entries in large databases already existing. One of the main objectives of this work is to take the …

Classifying Malicious Windows Executables Using Anomaly Based Detection, Ronak Sutaria

Theses

A malicious executable is broadly defined as any program or piece of code designed to cause damage to a system or the information it contains, or to prevent the system from being used in a normal manner. A generic term used to describe any kind of malicious software is Maiware, which includes Viruses, Worms, Trojans, Backdoors, Root-kits, Spyware and Exploits. Anomaly detection is technique which builds a statistical profile of the normal and malicious data and classifies unseen data based on these two profiles.

A detection system is presented here which is anomaly based and focuses on the Windows® platform. …

Demarcation Of Coding And Non-Coding Regions Of Dna Using Linear Transforms, Krithika Venkat

Theses

Deoxyribonucleic Acid (DNA) strand carries genetic information in the cell. A strand of DNA consists of nitrogenous molecules called nucleotides. Nucleotides triplets, or the codons, code for amino acids. There are two distinct regions in DNA, the gene and the intergenic DNA, or the junk DNA. Two regions can be distinguished in the gene- the exons, or the regions that code for amino acid, and the introns, or the regions that do not code for amino acid. The main aim of the thesis is to study signal processing techniques that help distinguish between the regions of the exons and the …

A New Approach To Feature Extraction For Rna Structure Comparision, Girish Prakash Walawalkar

Theses

In recent years, RNA structural comparison becomes a crucial problem in bioinformatics research. Generally, it is a popular approach for representing the RNA secondary structures with arc-annotation sets. Several methods can be used to compare two RNA structures, such as tree edit distance, longest arc-preserving common subsequence (LAPCS) and stem based alignment. However, these methods may be helpful only for small RNA structures because of their high time complexity. In this thesis, we propose a simplified method to compare two RNA structures in O(mn) time, where m and n are the lengths of the two RNA sequences, respectively. The method …

Direct Application Of The Least Action Principle To Solve (Human) Movement Dynamics Without Using Differential Equations Of Motion, Amitha Kumar

Theses

This thesis explores the numerical feasibility of solving motion 2-point boundary value problems (BVPs) by direct numerical minimization of the action without using the equations of motion (EOM) as an intermediate step. The proposed direct least action (DLA) approach using the downhill simplex method (DSM) is applied to both the single and double pendulum systems as beginning test problems. The solutions so obtained are compared to numerical solutions of the corresponding Lagrange BOM solved using a first order Euler algorithm for the same mechanical problems. The output path obtained by both of the methods essentially superimpose on each other.

Future …

Presentation Type, Perceived Credibility, And Perceived Validity : A Document Usability Analysis, Jason Langkamer-Smith

Theses

This descriptive research investigated usability measures reported by subjects who reviewed procedures formatted as decision tables and numbered lists taken from a microchip product specification document. The research subjects (n = 15) are employees of Agere Systems (headquartered in Allentown Pennsylvania, United States) where this researcher also worked as a technical writer. Subjects represented various national origins and were stratified into two groups of six Eastern and nine Western.

The independent variables, presentation type, perceived credibility, and perceived validity were studied for their interaction with the dependent variable, usability. The variable model was queried between the two groups. Three findings …

Do Industrial Back Support Belts Reduce Stress In Asymmetric Lifting?, Ryan Jamor Brown

Theses

The objective of this research is to determine the effects of wearing a back support belt during repetitive asymmetric lifting in terms of heart rate, blood pressure, static lift capacity, body discomfort rating and subjective rating concerning the effectiveness of a back support belt. The type of belt used in this study was of knit nylon and elastic construction designed for industrial use.

Eight female participants lifted a crate from the table to knuckle height at a rate of three lifts per minute for a period of 20 minutes; one set with wearing back support belt and one without back …

Online Clustering With Single-Pass Topology Based Fuzzy Clustering Algorithm, Abhishek Jaiantilal

Theses

Online clustering is of significant interest for real-time data analysis. Generic offline clustering methods such as K-Means, C-Means and others are computationally expensive. The computational burden of these methods increases non-linearly with the size of the data set. In addition these methods usually require a good amount of supervised knowledge yielding a non-unique solution. For real-time data analysis, there is an important tradeoff between accuracy and computational efficiency. An unsupervised one-pass clustering method that efficiently adapts to data distribution and evaluation is proposed. This method, Topology-Based Fuzzy Clustering (TFC), uses the topology of data to discover clusters. TFC uses the …

Modification Of Clays With Ionic Liquids For Polymer Nanocomponents, Neung Hyun Kim

Theses

In attempts to prepare nanofillers with enhanced compatibility with a polymer matrix, cationic and anionic clays susceptible to exchange of their interlamellar ions with a variety of other cations or anions, were selected.

In order to treat cationic clay, montmorillonite, which contains sodium ions as interlayer ions, reagents having cations differing in size and structure included three ionic liquids ([EMIM]⁺ [Br]^-, [HXMIM]⁺ [Cl]^-, and [Epty]⁺ [BF4]^-). Results indicated that cationic exchange did occur from aqueous solution as confirmed by FTIR, EDX, WAXS, TGA, and elemental analysis. WAXS indicated a significant increase …

Impact Of Missed Beats On Heart Rate Variability Using Time-Frequency Analysis, Kilbrom T. Hailu

Theses

ECG recordings, especially during an exercise stress test, are exposed to artifacts. The source of artifacts can be due to technical problems, biological events and errors in the automatic detection. As a result missed beats, extra beats and ectopic beats can occur. In this study analysis of missed beats is performed using time-frequency analysis. Some of the patient's data had missed beats.

Fourier spectral analysis was first applied to the missed beats during the resting state. The impact of missed beats using Fourier spectral analysis is significant, especially, when the missed beats are in a row. The Fourier spectral analysis …

New Hybrid Automatic Repeat Request (Harq) Combining With Space Time Block Coding (Stbc) In Invariant And Variant Fading Channel, Guillem Ernest Malagarriga Vilella

Theses

Hybrid Automatic Repeat reQuest (HARQ) combining for space time block coding Multiple Input Multiple Output (MIMO) system consisting of N transmit antennas and M receive antennas (NxM) in a time invariant channel and in a time varying channel is proposed and its performance is analyzed. Based on the measured channel matrix, the receiver chooses the best retransmission order and communicated it to the transmitter.

The scheme, where this algorithm is performed, is a combination of a precombining HARQ scheme and the Multiple Alamouti Space-Time Block Coding (MASTBC), which is suitable for more than 2 transmit antennas. The combination of this …

Boron Induced Surface Modification Of Transition Metals, Raghasudha Vangaveti

Theses

Boronizing is a thermo-chemical surface treatment of metals in which boron atoms diffuse into the metal substrate and form hard metallic borides. As a result of boronizing, several properties such as hardness, wear resistance, corrosion resistance, and high temperature oxidation resistance improve which make the metal substrate more suitable for industrial applications. These boronized parts are used in many industrial applications like ingot moulds, crucibles, biomedical implants, die-casting moulds, magnetic head applications, drawing dies etc.

The objective of this work was to investigate the influence of boronizing on the properties of transition metals. Three transition metals, tantalum, niobium and tungsten …

Traumatic Brain Injury : Traditional And Narrative Assessment Techniques, Sharon M. Katzman-Teller

Theses

Traumatic brain injury (TBI) causes impairment of executive functioning, as well as cognitive and language abilities of various degrees. Standard language tests currently focus on very specific language disorders and can not identify language disorders of TBI subjects with high-level language functioning. Although these standard tests can not adequately identify subtle language disorders, these TBI subjects lack cohesiveness in their conversation, which can have a strong effect on socialization.

Through the use of narrative analysis, research in narrative and conversational discourse, which incorporates linguistic, cognitive skills, as well as executive functioning and social abilities, seems to be more appropriately address …

Learning Hangul With Games: Applying Multimedia Techniques To Educational User Interfaces For Young Korean-American Children, Eun-Hee Han

Theses

This program is designed to motivate four- and five-year old Korean-American children to learn Hangul, the Korean language. Multimedia techniques make these lessons fun and interesting, by using lively visual images, sounds, and animation to communicate the material and have children practice Hangul. To do so, the program utilizes a three-part methodology:

** Lesson 1 is word recognition,

** Lesson 2 teaches Korean language characters

** Lesson 3 teaches sentences.

Once children understand the lesson concepts, they play games to reinforce their understanding of those concepts. This practice stimulates functions of the brain and provides an interesting way for the …

Every Inch Of The Way, Justin Myer Staller

Theses

Not Included

The Value Of Forgeries In Museums: An Arguement For Their Appreciation And Recognition As Objects Worthy Of Display, Corey W. Wyckoff

Theses

No abstract provided.

The Museum As A Community Organization: A Comparative Study Of The Strategies Employed By Museums And Community Organizations In Partnership With Their Communities, Amy E. Birnbaum

Theses

No abstract provided.