Digital Commons Network^™

Infrared Tv Camera With Ptsi Schottky-Barrier Detectors, Steven J. Blume

Theses

An infrared TV camera was developed for operating various sizes of Schottky-barrier IR-CCD image sensor chips. A digitally programmable frequency synthesizer is used so that the camera has the flexibility of using a 160 x 244 or 320 x 244 image sensor developed at the David Sarnoff Research Center. The outputs of the camera are compatible with an XYZ monitor, a standard TV monitor, and a computer workstation. Operation of the camera was demonstrated with a 160 x 244 image sensor producing an output on a standard TV monitor. Performance of the IR-TV camera system was investigated by evaluating CCD …

Office Technology : A Determinant In The Organization Of Spaces, Se Hun Kim

Theses

Technological advances have initiated complexity in buildings and may also provide the means to manage it. Research in advanced technology development suggests new directions for development and application of advanced technologies to buildings.

The purpose of this research is to examine and develop an understanding of building related computer uses. This study is done by literature search and field survey. Through literature search the theoretical background is established. Through field survey practical guidelines are suggested.

Studies of social and physical organizational systems and building systems are surveyed, then computers and advanced technologies are introduced. This is to find out practical …

Correlation Between Particle Velocities And Conditions Of Abrasive Waterjet Formation, Wei-Long Chen

Dissertations

The velocities of water and abrasive particles in abrasive waterjet(AWJ) were measured by the use of Laser Transit Anemometer(LTA). A setup for the velocity measurement was constructed and a statistical technique was used to improve the accuracy of the velocity determination. A comparison of the magnitude of velocities determined by LTA, Piezoelectric Force Transducer and Schlieren Photograph clearly indicates the feasibility of the use of LTA.

The velocities of water and particles were measured for different diameters of water and slurry nozzles, abrasive mass flow rates and particle sizes. The performed experiments enabled us to evaluate the effects of conditions …

Application Of Microwave Technology To Effect On-Site Regeneration Of Gac, K.C. Mahesh

Theses

The off-site regeneration of granulated activated charcoal(GAC), spent as a result of stripping of organics from aqueous waste streams, represents a burdensome cost both because of the actual cost of regeneration and legal liability associated with shipping a hazardous waste off-site: that liability is reflected in huge potential costs associated with mishaps enroute for the self-insured or high premiums paid to the casualty insurance companies for those generators that are insured by third parties. Thus there is a need for the development of a process to effect on-site regeneration of spent GAC cost-effectively.

This thesis mainly focuses on the technical …

Aqueous Absorption Of Nox Induced By Sodium Chlorite Oxidation, Chen-Lu Yang

Theses

Aqueous scrubbing in alkaline media for the removal of nitrogen oxides (NO_x) from flue gases using NaClO₂ as an oxidant is being investigated in the Chemical Engineering Department of New Jersey Institute of Technology. This thesis presents the findings of an experimental program that was conducted to estimate the capability of NaClO₂ aqueous solution to oxidize insoluble NO to soluble NO₂ in order to increase its solubility and thus prevent NO_x emission from entering the atmosphere from flue gases emitted by municipal incinerators or power plants.

The key findings of this program are:

* …

Propagation Of Millimeter Wave Signals In Forests Using The Equation Of Radiative Transfer With Strong Forward Scattering Phase Functions, Nack Yang Cho

Dissertations

A forest is a highly scattering medium at millimeter wave frequencies. The propagation of cw millimeter wave signals in forests has been studied previously, both theoretically and experimentally. Published experimental data verified that continuous wave transmission is possible over lengths of the order of a few hundred meters and that a forest acts to strongly scatter energy in the forward direction. The cw studies yielded the determination of the range dependence, beam broadening effects and depolarization effects of millimeter wave signals in a forest. However, pulse broadening effects, which are of importance particularly in the case of digital signal transmission, …

Manufacturing Workstation Model Using Petri Nets, Reni Alexander

Theses

Petri nets have become a powerful tool for modeling and analyzing asynchronous concurrent systems. In this thesis I apply Petri nets for analyzing and modeling a flexible manufacturing workstation (FMS). A manufacturing workstation is modeled by using Colored- Timed Petri nets, with the consideration of tool handling, raw materials, quality checking and the reuse of reworkable scraps. A simulation program for a simplified Petri net model of manufacturing workstation is described and the production throughput is computed.

On-Line Dot Matrix Code Verification, Thatta V. Premnath

Theses

Machine vision principles are increasingly applied in the areas of manufacturing and automated inspection. The objective of this thesis work is to investigate different methods that could be implemented for matching printed dot matrix characters with the actual characters to be printed.

In support to this investigation, a survey of various methods proposed by researchers in the field of Optical Character Recognition (OCR) is presented. Survey includes a detailed description of the state-of-the art methods. It is shown that due to restrictions of hardware cost and the time available to inspect each character, the standard approaches are not practical. Hence, …

Experimental Study Of Rectangular And Square Concrete Member Under Combined Biaxial Bending And Tension, Ming-Hua Shiau

Theses

The proposed research is based on an equation developed by Dr. Hsu, which represents the strength interaction diagrams and failure surface for reinforced concrete rectangular and square columns under combined biaxial bending and axial load. In this research, two rectangular columns and two square columns subject to biaxial bending and tension were tested and compared with the proposed failure surface equation. This study shows that the experimental test results achieve more strengths then those calculated by the equation of failure surface.

Evaluation Of Sorting Algorithm Performance On Single Instruction Multiple Data Machines, Dong Kuen Yang

Theses

Partitioning an application program into several tasks and executing them via parallel processing is one way to increase computation throughput and performance. But with a uniprocessor system, the performance increase will be minimal. Computer scientists have developed several multiprocessor systems to gain more speed in computation.

There are several computer architectures, such as pipeline machines, array processors and multiprocessor systems. They provide a parallel execution environment to increase the execution speed. But as the system becomes more complex, the communication traffic density between several processors increases more heavily. It has to provide some kind of control algorithm or routing function …

Process Modelling Of The Nitration Of Toluene, Nitin K. Shah

Theses

The thesis on the process modelling of the nitration process focuses specifically on the product separation of the nitrated aromatic material from the reactor and - wash section of the process. Included in the text is an overview of the main process steps associated with the production of para and ortho-nitrotoluene. The critical issues concerning the reaction of nitric acid and toluene were summerized, and resulted in this subject being deferred for future work.

The separation of the isomers into pure components is an important. part of the MNT process because of the close high boiling points of the isomeric …

Thermal Decomposition Of Chlorobenzene Reaction With Hydrogen And Oxygen Mixture In An Atmosphere, Chun-Chen Yang

Theses

The thermal reactions of chlorobenzene in hydrogen and oxygen mixtures were studied in tubular flow reactors at 1 atmosphere total pressure. Experiments were carried out in flow reactors of varied diameter for determining effects of different surface to volume ratios. Residence times ranged from 0.03 to 2.5 seconds and temperature was varied over a range of 560 - 660 °C. The 02/H2 ratios ranged from 1% to 5%.

It was found that the conversion of chlorobenzene in hydrogen and oxygen mixtures increased with both temperature and residence time. The oxidation of chlorobenzene also occurred more rapidly when oxygen concentraction was …

Agitation Requirements For Complete Drawdown Of Floating Solids In Stirred Tanks, Joseph Philemon Mmbaga

Theses

The agitation requirements for complete drawdown of floating solids in mechanically agitated tank vessels has been studied both theoretically and experimentally.

A semi-theoretical equation has been derived on the basis of Kolmogoroff's theory of isotropic turbulence to determine the minimum impeller speed required for drawdown. The equation contains one adjustable parameter which has been found to be a function of the impeller type and position in the tank vessel.

The equation was tested using various vessels and impeller configurations. The solid phase consisted of high density polyethylene (density = 897kg/m³), low density polyethylene (density = 840kg/m³) …

A Comparison Study Between The Tenax Trap And The Canister Collection Methods For Determination Of Volatile Organic Compounds, Li-Ching Lillian Hung

Theses

A comparison between the analytical methods for determination of volatile organic compounds, using Tenax GC as an adsorbent and using stainless steel canister collection is made.

Sample collection, analytical system and procedures, data analyses, as well as their fortes and their drawbacks, etc., are discussed.

In addition, a brief description of the developmental history of the above methods as used in the Air Pollution Research Laboratory at the New Jersey Institute of Technology in Newark, New Jersey, is given.

Adaptive Transform Coding Of Video With Motion Compensation And Vector Quantization, Jung-Hui Chien

Theses

This thesis proposes an efficient transform coding scheme for the low bit rate video sequence. The redundancy within adjacent video frame is exploited by motion compensated interframe prediction using the efficient independent orthogonal search technique, and the motion compensated frame difference (MCFD) signal is transform coding by 1-D DCT, 1-D HDCT and 2-D DCT, the coefficients are zonal masked, and vector quantizatied adaptively. The encoded MCFD as well as the motion information and variance grouping (side informations) are transmitted to the receiver to reconstruct the frame. The transform MCFD signal is classified into the four groups according to the coefficient …

Small Business Management : A Case Study In Taiwan, Lilly Chin

Theses

In this research, a case study concerning small business management was conducted in Taiwan, Republic of China.

Taylor's theory, Cost Accounting System and Japanese Quality Control methods were practiced in a real situation of Taiwan manufacture. The advantages and disadvantages of their use were evaluated.

Besides, it was found that the major problems facing small business in Taiwan were:

(1) Lack of sufficient professional knowledge for the policy makers.

(2) Shortage of business planning.

(3) Insufficiency of legal knowledge of international business

(4) Waste of material and labor.

In addition, differences and similarities between small business in Taiwan and in …

Reliability Prediction Of Vulcanized Fibre Using Electrical Noise As A Screening Parameter, George A. Donos

Theses

The main objective of this thesis was to find a correlation between the electrical noise generated within the body of Vulcanized Fibre in insulating service and the time of its breakdown under a synergy of electrical, thermal and mechanical stresses. Failure was defined as a material discontinuity, puncture, under accelerated life test conditions. Radio frequency measurements of the partial discharges occuring in the voids of the material were performed on 1240 samples of vulcanized fibre with 10 mil thickness. The level of electrical noise measured was used to classify the specimens into the three following categories: (a) Low Noise:0-2.8μV (0-9db), …

Robotic Arms With Flexible Links As The Links Approach Rigidity, George A. Downes

Theses

The dynamics of single link flexible robotic arms are modeled using the Bernoulli-Euler beam equation and Lagrange's equation. The Bernoulli-Euler beam equation derivation is reviewed and is studied in the limiting case as the flexiblity approaches zero. Using the Bernoulli-Euler beam equation, a procedure is developed to calculate the position of the endpoint of a link given the displacement, slope or curvature of any point on the link. Also a procedure is developed to calculate the minimum Young's modulus of elasticity, E, given a specified endpoint displacement tolerance.

A rigid link model based on Lagrange's equation and a flexible link …

Theoretical Analysis Of Universal Joint With Manufacturing And Assembly Tolerances, Xiaosong Liu

Theses

The model for a Cardan joint with manufacturing and assembly tolerances is a spatial four-bar mechanism with one rotating and three cylindrical joints. In this thesis, dual-number coordinate transformation matrices and Newtonian mechanics are applied to provide a concise description of the kinetics of the universal joint. The dual-Euler equations are used to derive the dynamic equations of the Cardan joint. The analytical technique presented here yields explicit expressions. It will provide the designer with better insight into the workings of the kinematics and dynamics of the Cardan joint.

The equations of statics and dynamics of the frictionless universal joint …

Recursive System Identification Using Least Squares Method, Gholamreza Ghorbani Moghadam

Theses

Input and output sampling, in addition to computer simulations, are now an integral part of system identification. In this thesis, the concept of analyzing any time invariant continuous deterministic system will be developed by identifying a linear discrete - time system equivalent to the continuous one. In this method, two computer programs are written in pascal. The first program applies the Recursive Least Squares Method to discrete - time systems in order to estimate the system components. The second program estimates the future output of the system. Four systems have then identified using the programs.

In this process, system identification …

Equation Of Interaction Diagrams For Prestressed Concrete Columns, Angamuthu Palaniappan

Theses

A general analysis and design equation for prestressed concrete column is proposed. This equation represents the strength interaction diagrams of prestressed concrete columns under bending about one axis and combined with axial load. The equation proposed is a modification of the one developed by Dr. Hsu, C.T. Thomas for reinforced concrete columns published in the ACI structural journal in 1988. The analytical results were compared with the results of tests on 30 eccentrically loaded prestressed columns reported by H.R. Brown and A.S. Hall. The results were in good agreement with the static analysis and the above mentioned test reports. The …

Design And Analysis Of An Intracranial Pressure And Temperature Sensor Telemetry System, Anshumat Parasar

Theses

This thesis presents a signal conditioning and telemetry system for an implantable pressure and temperature transducer. The initial target application is for measuring the epidural intracranial pressure in the range of 25-100 millitorr and temperature over the range 90 — 110° F. The implant, based on custom silicon IC design can be packaged within a volume of 2cm3 and will require surgical procedures for placement and removal. Effort has been made in this thesis to design the transducer, associated signal conditioning and telemetry circuits for useful operation over a wide range of power supply voltage. The implanted device is powered …

Study Of Acetone Extractable Organic Matter From Airborne Particulate Matter From An Urban Site, Wenhui Wu

Theses

Two seasonal periods (Winter 1988; Summer 1988) of daily Newark urban air samples were collected on glass fiber filters. Each filter was first extracted with dichloromethane and subsequently with acetone. Quarterly composites of each were then tested for mutagenicity. The results of the analysis of the less polar dichloromethane extracts were reported in the thesis of Junghen Lwo. A modified fractionation scheme involving acid-base partitioning and silica gel column chromatography has been used as the first step in the bioassay-directed search for significant levels of mutagenic compounds in extracts of inhalable (IP 10) ambient air particulates. The biologically "hot" fractions …

Analysis Of C2 And C3 Hydrocarbons In Ambient Air. Part 1 ; Development Of Simple Analysis For Polycyclic Aromatic Hydrocarbons. Part 2, Li-Li Wu

Theses

SECTION I

A method was developed to analyze C₂ and C₃ light hydrocarbons: Acetylene, Ethylene, Ethane, Propyne, Propylene and Propane levels in the ambient air. Chlorinated compounds which eluted within the gas chromatograph operation conditions needed for the above hydrocarbons included Freon 12 and Methylene chloride, were also monitored.

Samples were collected from two sites, one located at Carteret and one at Elizabeth New Jersey. Samples were taken from September 1988 through July 1989. The sampling method used stainless steel canisters and was set up to collect 24 hour air samples at a constant flow rate of 30-35 …

Protein Separation With Mathematical Modeling For Chromatographic Operation, Hsien-Chih Ma

Dissertations

We have performed experiments and derived mathematical models for packed bed columns used for liquid phase chromatographic separations of proteins with impulse input of feed solutions. These models can now be used to describe the relationships between the elution characteristics (peak height, peak position, and shapes) and the operating conditions (flow rate and buffer conditions) of ion exchange and gel permeation column chromatography for protein separations.

The surface adsorption model was discussed relative to the nature of the mobile and stationary phases in ion exchange column chromatography for two distinct cases: with and without pore diffusion. For large solute molecules, …

First Impression : The Study Of Entry In Architecture, Siriwan Polpuech

Theses

Entrance as an element of architecture has had an important role in the design process from the very beginning of the architecture. Its role varies according to culture and the belief of people. The characteristics of entrances are as diversified as are architectural style and historic periods.

Architectural styles continue to change. New forms and technologies add to the growth of styles. All these contribute to the eclectic of design ideas. The specifics of an entrance can arise from, be complementary to or in contradiction of a style. They always serve as a mediator between interior and exterior spaces. The …

Computerize Data Information For Architecture Design, Syau-Yi Yu

Theses

Computer-aided architectural design is technically and commercially feasible yet experience in the architectural profession to date is paradoxical. Many who apply computers to architecture appear satisfied but the tangible benefits are seldom obvious and even where computers are used in firms it is not done to the fullest potential. Contents of this thesis are an attempt to help architecture better utilize the advantages of computer applications.To do this it is important to examine two question: what is design and what is the computer? They are similar yet distinct. Architectural design is a special kind of problem solving process; an information …

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 …

Effects Of N>M Clos Networks On Edge Coloring And Matrix Decomposition Algorithms, Ming-Hsing Lin

Theses

Considered in this thesis are n > m Clos networks on edge coloring and matrix decomposition algorithms. This work uses a two-fold approach to examine the effects of n > m Clos networks on edge coloring and matrix decomposition algorithms. First, edge coloring and matching on bipartite multigraphs are applied to routing on Clos networks. It is demonstrated that edge coloring algorithms which find a minimum edge coloring set up the routing for n > m Clos networks with redundancy. The results presented here indicate that the Euler coloring algorithm has applications on n > m Clos networks because it has fast time complexity …

A Comparison Of The Fracture Toughness, Hardness, Impact Strength, And Thermal Expansion Of Two Dental Porcelains, Nancy Maignon

Theses

Dental Porcelains are known to be very brittle materials. Ongoing research is being undertaken to obtain a porcelain of optimum strength. A recent development in this field is the new porcelain Optec HSP.

In this comparative study, a series of mechanical test were performed on both Optec HSP and Ceramco II.

An indentation technique was used to calculate the hardness and fracture toughness, the Izod method with a 1 ft-lb pendulum was used to obtain the impact strength, and the thermal expansion was calculated with the Dupont thermal analyser.

For each material, a sample size of five and twenty specimens …