Digital Commons Network^™

Protocol Processing Delay Analysis On Ethernet By Simulation Of Njit Ethernet, Jagdish Gangrimal Rangwani

Theses

CSMA/CD based Local Area Networks account for about 75% of the installed LAN base today. As these networks are becoming available for high channel bandwidth, it is important to identify the bottlenecks in these networks. As channels are becoming high speed, bottleneck is shifting from channel to protocol processing. This delay depends on a particular implementation of the protocol and not the protocol standard itself.

This Thesis presents the analysis of delay on Ethernet. To achieve realistic results NJIT Ethernet, as it is configured, is modelled and simulated. Traffic on this network is measured and load on each segment is …

Optimization Of Throughput And Stability For Csma/Cd Channel, Liangshyng Jou

Theses

Multiple access technologies plays an important role in designing distributed computer communication system. Here, CSMA/CD has attracted researchers' attentions in the last ten years. In this paper, based on attributions of the slotted, nonpersistent CSMA/CD system, performance of CSMA/CD channel is analyzed. Adaptive Retransmission Technique is adopted to obtain the maximum throughput. Also, equilibrium contours are derived to discuss the stability of the system. And use FET to measure the stability of CSMA/CD channel that FET gives an approximate measure of the average uptime of an unstable channel.

The Unfolding Of Geologic Space, Anne L. Brown

Theses

None provided.

Design Facility Utilizing Vdts, Glenn E. Enderby

Theses

None provided.

Rheumatoid Arthritis: An Overview, Angela Delaura

Theses

None provided.

Integrating Process Skills With Content In Sixth Grade Science, Beatrice Mackey

Theses

This science curriculum on the flower and simple and compound machines was developed for sixth grade. It was designed to include the objectives suggested by the Core Competencies and Key Skills for Missouri Schools. It was designed to give practice in the process skills. The author felt the need for this curriculum to fill the gap between what our local science curriculum offers and what the State Department of Education suggests that we teach.

Research indicates that the sixth grade science curriculum should provide the opportunity for children to learn science concepts and conceptual schemes, and to become familiar with …

Environment "Atmosphere", Kathleen A. Rose

Theses

I have been very interested in the creation of space (atmosphere) by framing a portion of the environment with a viewfinder. I am specially interested in the relationship of people with people and their connection with their environment. My curiosity stems from my background in sociology; I have a BA in sociology concentrating in urban society and the structure of culture. I also studied urban anthropology and did a hands- on- investigation of Irish culture which resulted in a hand made photography book . The photographic work of Walker Evans, Ernest Haas, Robert Frank, Linda Connor, Dean Brown, Alfred Stieglitz, …

Liberation: Design That Liberates Rather Than Handicaps Us, M. Amelia Kennedy

Theses

In my studies to become an industrial designer I have placed the strongest emphasis on two specific concerns: the design of products that support safe human activity (ergonomics), and the design of products that are accessible to physically impaired people. During this time I have been struck by the fact that these two concerns are always discussed separately, as if they had distinct applications in design that never related. The underlying assumption is that the general population and the the physically impaired are mutually exclusive groups. For this thesis project I set out to challenge that assumption by finding design …

Geometric And Organic Imagery, Douglas Charles Kenney

Theses

My purpose for attending graduate school was to increase my growth both as an artist and as an individual. Before coming to R.I.T. I had seven years of ceramics experience and I understood how a new environment and interaction with new people would assist my personal development. Moreover, the Master of Fine Arts degree would strengthen the quality of my work and provide me with the credentials needed to instruct at the university level. Considering the potential options an M.F.A. degree would give me, production pottery lost its appeal. I applied to graduate schools and was accepted at R.I.T. . …

Design Of Robotic Lan Controller And Map Interface, Jayesh M. Joshi

Theses

An application specific integrated circuit has been designed for use as a gateway between two local area networks. This silicon chip provides the gateway function to link the NJIT robotics network and the MAP IEEE-standardized network. This IC utilizes the available Motorola MC 68824 Token Bus Controller for the MAP data path. A special IO design compatible with an optical communication link is used to interface into the NJIT RLAN network.

The gateway IC serves as an asynchronous buffer between the 5Mbps MAP link and the 500 bps local optical link. The control protocol provides the master function for polling …

Elements Affecting Style, Aminta Romaguera

Theses

In order to make a comparison between the elements that affect the changes and the dominant tendencies in the design of jewelry at different times, I will briefly trace its development since the beginning of the twentieth century. This historical background will also allow me to point out how the style of jewelry has changed in the past decades, and the events influencing these changes, while also giving me a better idea of how these have influenced my thesis work.

A Workshop For Parents Of Children With Learning Disabilities, Kathy Taylor

Theses

The purpose of this paper was to justify the need of a workshop for parents of learning disabled children . The need determined by the result of a questionnaire filled out by the parents of LD children.

Once the need of the workshop was established a review of the literature in the field of learning disabilities was completed . This was done to give the presenter the necessary background to conduct a factual and effective workshop . Research was included on historical background of the LD field, definitions, characteristics, and social issues.

Methods of an effective presenter were also researched …

Continental Ceramics At Auction: A Statistical Analysis Of The Effects Of Property Designations Upon Final Sale Price, Margaret Scott Wallace

Theses

This study, Continental Ceramics at Auction: A Statistical Analysis of the Effects of Property Designations Upon Final Sale Price by Margaret Scott Wallace, explores the relationship between auction catalogue property designations and the final sale prices of 18th-century continental ceramics. Conducted as part of the Master of Valuation Sciences program at Lindenwood College, the research focuses specifically on sales held by Sotheby’s and Christie’s in New York between 1984 and 1986.

The central hypothesis posits that identifying the seller—especially when associated with prestige or recognizability—positively influences the auction outcomes. The study utilizes statistical methodologies, including crosstabulations and regression analysis, to …

Identity Type Appropriateness Analysis Based Upon William Cavino's Classification System For Symbols And Logos: Verbal Symbols, Stewart Brett Deboer

Theses

This analysis has led me to believe that an appropriate style of identity mark for LVA-LC should fall within the realm of either a verbal symbol or that of a figurative mark. The potential competition and co-existence with a second identity mark is the primary reason for focusing my attention further within those areas. A strictly typographic treatment seems to be the most appropriate format for communication, clarity, and identity.

Environmental Impact Assessment For Water Resources Projects : Planning Procedure And Analytical Methods, Mahadesh C. Tumkur

Theses

This thesis presents a state of the art review of environmental impact assessment procedures utilised in the water resources projects which have evolved over the past two decades. The methodologies employed and some of their limitations which exist and are inherent in both the planning and assessment phases of analysis are identified. The above was supplemented by an investigation of the various views of professionals currently employing the above methodologies. The review effort summarizes the relevant information obtained from the literature which is rather dynamic because of the ever evolving nature of the field. One conclusion drawn from this study …

An Intelligent Electrocardiogram Tutoring Package Ekgchallenger, Santosh K. Ananthraman

Theses

This thesis presents the development and implementation of an intelligent electrocardiogram tutoring package, namely, EKGCHALLENGER which is meant for use in medical schools to teach medical students a method of diagnosing electro cardiograms.

EKGCHALLENGER is an IBM - PC based, user friendly package. It works in two basic modes. The first is a tutorial mode wherein the user is taught the step-by-step diagnosis of electrocardiograms ( EKGs ) which are presented in order of increasing difficulty. The second is the challenger mode wherein the user is asked to diagnose EKGs which are randomly chosen from an EKG database. The diagnosis …

The Applicability Of Parametric Inverse Scattering For Optical Waveguides With Imperfect Boundaries, Hyoung Jin Choi

Theses

In this thesis, the applicability of an inverse scattering technique for an optical waveguide with imperfect boundaries is investigated. The inversion of imperfect boundaries of waveguides is different from usual inverse scattering algorithms because only eigenmodes can propagate in a waveguide. We suggest a parametric inversion method based on the first-order coupled mode equation. The validity and usefulness of the method are demonstrated using examples of periodic and almost periodic imperfect boundaries.

Adaptive Subband Video Coding With Motion Compensation, Manjunatha S. Kadur

Theses

An efficient scheme for video sequence coding is presented here. The interframe redundancy present in the video sequence is exploited by motion compensation using the efficient independent orthogonal search technique, which requires least number of computations in the worst case. The motion compensated frame difference signal is encoded with a new technique — subband adaptive vector quantization.

Subband coding like transform coding results in signals of unequal energy patterns, which is efficiently utilized for bit allocation. In addition, the subband approach offers means for efficient (but suboptimal) Vector Quantization (VQ) by splitting the signal into several signals. By rate distortion …

Feasibiltiy, Planning, And Justification Of Fms : A Case Study, Joo Hwan Kim

Theses

FMS production technology, because of its ability to adjust to changes in product demands and produce at competitive costs even on small runs and at above quality levels, has caused its adoption by the major automobile manufacturers. These attributes are of particular interest to Korean automobile manufacturers who due to a small home market need to manufacture in relative small quantities and to export.

This paper considers how such a technology can be implemented. It discusses the key factors to be considered such as strategy, selection and design of the appropriate hardware and software, required organizational changes, and its economic …

A Study Of Techniques Of Performance Evaluation, Moses Oyewolfe Ogungbenro

Theses

Performance evaluation is a process that every one goes through in life. One may be the rater or the ratee. One of the basic questions an organization usually asks in establishing or revising a performance evaluation system is: What should the system accomplish, or what should be the technique to be used? The answer to this question varies from organization to organization. Today, we live in a world of organizations, each of us still makes many personal appraisals and subsequently, choices. For instance, we choose doctors, hairdressers, business advisors and others, largely on the basis of our judgements of their …

A Dynamic Cmos Programmable Logic Device, Praveen K. Parvathala

Theses

This thesis presents the design of a Dynamic CMOS Programmable Logic Device chip (NJIT PLD). The main feature of the chip is its reconfigurability and the provision of a processor interface which makes the chip capable of performing coprocessor like functions. The chip has been designed to be used with the Intel 8088 microprocessor, but may also find stand-alone applications. Provision is made for dynamic reconfiguration of the chip. The configuration data for the chip comes from a serial PROM, to which the chip sends a synchronizing clock. The NJIT PLD is a high performance, digital integrated circuit. It has …

Trellis Encoded M-Ary Partial-Response Schemes, Raju P. Patel

Theses

Convolutional codes can be used to improve the reliability of partial-response channels in a Gaussian noise environment. Multilevel partial-response schemes can be used to increase the information rate in a given bandwidth compared to binary partial-response schemes. This thesis deals with the theory and construction of convolutionally encoded 4-ary partial- response schemes. The free Euclidean distance of the combined trellis of rate-1/2 convolutional code and 4-ary partial-response scheme is found through a computer search, using the Viterbi-algorithm.

The matched encoding concept is also applied to find the conditions for matched encoding for combined trellis of rate-1/2 convolutional codes and 4-ary …

Program Analysis Tool For Extensive Reverse Software Engineering : A Tool To Understand The Software (Patern), Bubulal R. Rawal

Theses

This thesis describes a computer aided software engineering tool called Program Analysis Tool for Extensive Reverse software eNgineering (PATERN). Conceptually, PATERN provides systems analysts/programmers with a powerful tool independent of programming language, operating system, and programmer style of coding for documenting existing software. PATERN has been tested with C code in the UNIX environment. This thesis also describes the interface between PATERN and two subsystems that interact with PATERN: relational databases and data flow diagram generators. The implementation of these interfaces was investigated using Informix and another software tool, Directed Acyclic Graphs (DAG) for generating hierarchical structure charts and flow …

Towards A Bound For The Compression Of The Lzw Algorithm, Anoop Kumar Srivastava, Shinu Gupta

Theses

The LZW algorithm is a well known efficient adaptive compression algorithm. It is based on constructing a dictionary containing character strings from the text. A number of researchers have attempted to add variations to the original algorithm to achieve higher compression values. In this thesis we attempt to find a bound for the LZW approach. That is, we build a dictionary which gives maximum compression and satisfies prefix property of LZW algorithm.

In order to build such an optimum dictionary, the dynamic programming technique is applied. The final dictionary selected consists of entries which give maximum overall compression and also …

Strategic Planning For Management Information System, Hsiu-Li Tsai

Theses

The scope of this thesis is to study the strategic and long term planning in Management Information Systems. How can it be better satisfied to support the multinational business environment. A growing number of corporations are using computer-based information systems to manage their global businesses, the growing penetration of mini-and micro computers in the office and administrative environment, have created more attention on the need for a comprehensive and integrated planning in MIS.

Planning should be made from its time horizon and from its focus. It concentrates on the long-range conceptual planning, medium-range managerial planning, and short-range operational planning. They …

Image Coding With Quantization Noise Feedback, Jen-Chieh Wang

Theses

A progressive image transmission based on Laplacian pyramid structure is used for the scheme of quantization noise feedback. Because a reduction in transmission rate inevitably increases the quantization noise and degrades the image quality, the designer of the quantizer laces the dilemma of balancing the transmission rate and the quantization noise. Using the algorithm of noise feedback will reduce the quantization error without appreciably increasing transmission rate. Uniform quantization and nonuniform quantization rate used to compare the result with or without noise feedback. In the transmitter end, the original image can be reduced by a certain procedure to form a …

Efficient Design Of Trellis Coded Cpfsk, Hsinhsyong Yang

Theses

In this thesis convolutional coded continuous-phase frequency shift keying (CPFSK) is studied.

CPFSK which is a subclass of continuous phase modulation ( CPM ) is a constant amplitude digital modulation scheme with very good spectral characteristics.

A new method, called matched encoding, that combines convolutional codes and CPFSK is studied. With the maximum free Euclidean distance as the optimization criterion, the best combined coded schemes were found for the same rate of the codes and given total number of states in the optimum decoder.

A different method which was suggested by Rimoldi[7], called the decomposition method, is also described in …

Substituent Effects On Strained Rings. Part A ; The Kinetics Of Hydrolysis Of A Quinuclidone Using Ftir. Part B, Yeu-Yi Chiu

Theses

PART A: The energies of a series of monosubstitued propane, cyclopropane and cyclopropene compounds were calculated using ab initio molecular orbital calculations optimized at the 3-21G level using Gaussian 82 and Gaussian 86 programs. The effects of substituents on stabilization energies and geometries are rationalized with respect to the parent molecules. The result is presented which indicated that for substituted cyclopropyl and cyclopropenyl compounds, most of the substituents induce stabilization except the —NC substituent group is destabilizing in cyclopropyl and cyclopropenyl systems. Indications of relative electrostatic and resonance effects are also analyzed. A linear free energy relationship has been exam-ined …

Integrated Voice/Data Services On Multihop Radio Networks, Chialun Lu

Theses

Integrated voice/data is the first step toward Integrated Services Digital Networks (ISDN). Various techniques have been proposed and analyzed for multiplexing voice and data over a large bandwidth channel. Network efficiency is what we are most concerned about. In this paper, we address the problem of determining optimal access policies for a tandem ISDN network by using Dynamic Programming. Computer simulation shows that optimal policy minimizes the data delay.

Rays And Beams Near The Shadow Boundary, Weixing Gao

Theses

Asymptotic techniques in wave propagation problems exhibit attractive features in computational aspects compared to numerical methods. However, they experience problems in complicated environments due to the transition regions associated with them. The transition region involving a shadow boundary in the downward refractive index profile has been investigated. The ray paths were determined solving the ray equation analytically. The Green's function due to a line source is constructed and evaluated using numerical integration (reference solution) and asymptotic techniques. Then, the field produced by the source, is synthesized, using superposition of beams generated from complex source point representation. The floating parameters such …