Digital Commons Network^™

Development Of A Rock Model Testing Capability At The New Jersey Institute Of Technology And Testing Of Plane Stress Models Possessing A Central Circular Opening With A Nearby Horizontal Discontinuity, David R. Good

Theses

This thesis had three main objectives. They were to develop a rock model testing capability at N.J.I.T. by (1) developing and building a load testing frame for rock models, including all necessary appurtenances and load measuring devices, (2) developing a rock modelling material and quantifying its properties, and (3) applying the capabilities described in items 1 and 2.

A high capacity load test frame was constructed from structural steel members. Heavy screw rams were utilized to apply load and specially constructed proving rings were employed to accurately measure load. Additionally, load platens and other support equipment were constructed.

The model …

A Study Of Human Exposure To Benzo(A)Pyrene (Bap) Through Different Pathways. Part A ; Assessment Of Benzo(A)Pyrene (Bap) Exposure Through Urine Analysis With The Hydriodic Acid Reduction Reaction. Part B, Shao-Keng Liang

Theses

PART A: An investigation of total human exposure to an environmental pollutant is described. The study is being conducted in a community impacted by a foundry suspected to be a dominant local source of benzo(a)pyrene (BaP). The research aims to assess the relative contributions of indoor and outdoor sources and to measure BaP in media including indoor air, outdoor air, food and water.

PART B: A method for biological monitoring of exposure to benzo(a)pyrene, a representative polycyclic aromatic hydrocarbon (PAH), has been developed. The analytical procedure includes extraction of PAH and PAH metabolites from urine using commercial cartridges containing c …

Formation Of Light Hydrocarbons And Soot In The Pyrolysis Reactions Of Chloro, Dichlorobenzene, Acetylene And Benzene In An Atmosphere Of Hydrogen, Larry Jiyuan Zhu

Theses

The kinetics of thermal decomposition of chlorobenzene and dichlorobenzene in a hydrogen and helium atmosphere were further studied to investigate formation of soot and light hydrocarbons. The experiments were performed at atmosphere pressure with residence times rangeing from 0.2 to 1.2 seconds, and the temperature ranges of 850°C to 925°C for chlorobenzene and 870°C to 910°C for dichlorobenzene. Flame ionization detectors, which were connected to GC columns, were utilized for the qualitative and quantitative analysis of the reaction products. A methyl silicone capillary column was used analyzing of heavy aromatics and a Carbosive G was used to analyze light hydrocarbons. …

Planning Design Change : Focus On Ottawa, Illinois, Donna Jean Carney

Theses

The subject of the study is development change as it impacts the identity of small cities. Can small city development problems be analyzed as smaller versions of big city problems, thereby requiring smaller versions of big city design and planning solutions, or do they require responses different than reduced scale of form and land use?

The specific problem context is Ottawa, Illinois, a city in which past developments and plans for future change are representative of a large class of small cities in the U.S. Many towns of this size are caught in the dilemma of decline through not changing, …

The Architecture Of Automobile And Building Design : Learning From 100 Years Of Parallel Processes, Vojislav Ristic

Theses

The industrial revolution has had a critical impact on society in general and architecture in particular. How we design, build and use buildings is different due to industrial changes in materials, processes and techniques. A key manifestation of the industrial revolution has been the automobile. Since the automobile is a more direct result of application of technique, it is helpful to examine its design to better understand the less direct influences of technique in architecture. This is especially important at a time when the role of technology in architecture is becoming both more significant and more difficult to define and …

Thermal Decomposition Of Dichloromethane/1,1,1-Trichloroethane Mixture In An Atmosphere Of Hydrogen, Yang Soo Won

Theses

The thermal decomposition of a dichloromethane/1 , 1 , 1-trichloroethane mixture diluted in hydrogen was conducted in tubular flow reactors at 1 atmosphere total pressure. The thermal degradation of each species was analyzed systematically over temperature ranges from 475 - 810 °C, residence times of 0.05 - 2.0 seconds and three different surface to volume ratio flow reactors.

It was found that the conversions of each species in the mixture were a function of both temperature and residence time. Complete decay occurs at about 810 °C for dichloromethane and around 570 °C for 1,1,1-trichloroethane at 1 second residence time. The …

High-Energy, Curable Polycyclopentadiene Binder For Solid Rocket Propellants, Jian Guo Ning

Theses

Diels Alder polymerization of cyclopentadiene ( CPD ) has been carried out at 170°C under inert atmosphere. The resulted polymer has a low bulk viscosity, 7.4 cps, and a number average molecular weight M_n up to 3000. This liquid Prepolymer is curable with maleic anhydride. With ammonium perchlorate, aluminum, and maleic anhydride, a high energy solid propellant has been formulated with this polymer. Via bomb calorimeter, Instron, and density measurement, it was found that this propellant has a better heat of combustion, tensile strength, and solid loading than that of the commercial rocket propellant based on hydroxyl terminated polybutadiene.

A Study On The Poly(Ethylene Terephthalate)/Flouropolymer Blends, Chyan-Nin Chiu

Theses

The rate of crystallization of Polyethylene terephthalate) (PET) can be improved by blending it with polyethylene co chlorotrifluoroethylene) (ECTFE; tradename Halar) so that it can be suitable for injection molding. The special advantage of this method is that molecular weight of the blend will not decrease so much as by adding nucleating agents. That is to say, the mechanical strength of the blend will not decrease very much compared with that of virgin PET.

Determination Of Aromatic Amines By Diazonium Salt, Hong-Hue Hsu

Theses

There are many analytical methods used in the identification of aniline by the production of various colors upon treatment with certain reagents. In this work a new inexpensive, easy and sensitive methods to quantitate aniline is developed. The change of absorbance is large enough to measure with a difference of only 1 ppm in the aniline concentration.

In this method, the reagent (2,4-dinitrodiazonium sulphate) which reacts with aniline produces a yellow color. Formation of this color (which absorbs at 486 nm) indicates the presence of aniline. The amount of aniline can be determined by measuring the absorbance at 486 nm. …

Learning System, Bhavesh T. Adani

Theses

Many rule-based learning systems have been implemented which generate and update rules/facts from illustrative examples provided by the user. But very few of them have succeeded in achieving the efficiency and accuracy of an ideal system.

The approach made here is to continuously update the hierarchical structure of rules/facts of a knowledge-base so that efficient and accurate solutions to any query can be achieved easily and immediately from the many possible solutions to the query. As the rule-based systems deal with a very large knowledge-base, it is sometimes necessary to apply a learning technique that finds optimum solutions efficiently.

The …

An Intelligent Computerized Pulse-Duplicator For The In-Vitro Evaluation Of Prosthetic Heart Valves, John F. Andrews

Theses

A computerized data acquisition system is presented for the in-vitro determination of the hydrodynamic performance of prosthetic heart valves. High speed data acquisition and ensemble averaging techniques are employed to minimize error and provide a standard for data collection and analysis across a wide range of simulated physiologic conditions. Processing algorithms automatically divide the cardiac cycle into phases based on landmarks in the pressure and flow waveforms, with minimal variability and without operator intervention. The contributions of valve resistance, regurgitation, ejection, leakage, and power loss to hydrodynamic performance are isolated for investigation. Phasic power loss analysis is reviewed as a …

Analysis And Design Of A Surface Microengineered Silicon Humidity Sensor, Uei-Yanq Chen

Theses

This thesis details the design for a solid-state humidity sensor which utilizes state-of-the-art silicon technology. The sensor design utilizes a microengineered surface which includes a polysilicon airbridge structure as heater and sensor element in an integrated device.The operation of this device depends upon the small variation of thermal convection coefficient which effects the temperature of the heated element within the device. The temperature of the polysilicon bridge is monitored by means of a resistance bridge. In one design(sensor I) a single polysilicon airbridge is used for both the heater and resistance sensing element. Also a second inferior design (sensor II) …

Optimal Cache Size In Microprocessor-Based Multiprogramming System, Charalambos Stephanou Christou

Theses

The Motorola 68020 microprocessor, its paged memory management unit MC68851 and cache memories are rigorously studied. The simulation model of this uniprocessor, multiprogramming system was constructed and tested to determine the optimal physical cache size.

The parameters varied in the model are the cache size, the degree of multitasking, the loop count and size, the cache algorithm and the time slice given to every task. A number of simulations have been conducted and the results are examined.

The Strategic Planning Dilemma In American Manufacturing, James Andrew Kiray

Theses

The decline of American manufacturing competitiveness is a highly publicized and controversial issue. This publicity has led to a panacea of solutions being offered to this problem. As a result, many conflicting viewpoints have emerged, which have aided in making any solution to this problem extremely difficult. Top executives have been inundated with recommendations for change, causing confusion at all levels of management.

In an effort to define the underlying problems existing within the American strategic planning process, this author has selected current literature which supports his own views, and has expended upon these views.

Once these underlying problems are …

Computerized Analysis Of Gastrointestinal Spike Burst Activity, Karthik Krishnan

Theses

This thesis describes a computer algorithm for locating gastrointestinal spike bursts. The algorithm also finds the the number of spikes within each spike burst, the average duration, and average amplitude of each spike burst. The algorithm was applied to the automation of the analysis of the Migrating Colonic Complex.

The algorithm detects the spike burst using threshold, time interval and frequency criteria. The computer program is implemented on a PDP 11/73 digital computer. The operation of the algorithm was tested on animal models to detect the spike bursts, before and after the inducement of certain drugs to alter the colonic …

Finite Element Method In Turbo Pascal, Tingwang Kuo

Theses

A finite element program FEM2D in FORTRAN language by J.N. Reddy has been translated into TURBO PASCAL and several features such as interactive input, mesh generation for a rectangular plate with a circular hole at the center of the plate and graphical display of the meshes and node numbers have been implemented. Four examples including potential flow and plane stress problems have been tested successfully. It is concluded that the PASCAL language on a microcomputer can he used to write a finite element program and is easier to give graphical display than FORTRAN language. The maximal number of nodes that …

Development Of A Novel Dentin Bonding Agent And Testing For Mechanical Properties, Mircroleakage And Toxicity, Sanjay V. Odak

Theses

In this study a dentin bonding agent based on Tolylene diisocyanatc with o chlorophenol as a blocking agent was tested. Bond strength with dentin was determined using a clinically relevant test method. A comparison was made using commercially available bonding agents and restorative resins. A simulation of microleakage around restorations was performed using a "Silver staining technique". Microleakage was quantified using digital image analysis, and a method was proposed to compensate for the loss of the third dimension during image analysis. Layer-by-layer curing of restorative, and an acid etching technique was used to improve bonding to dentin. The oral LD50 …

Arithmetic Pipline Scheduler, Chun-Ta Pan

Theses

A schedule is used to determine which stages of an arithmetic pipeline are active at any particular time. It can determine when another process can be introduced into the pipeline so no more than one set of data will use the same stage at the same time. The Arithmetic Pipeline Scheduler (APS) is a software tool used to analyze schedules for different operations and determine greedy schemes for introducing data into the pipeline. The user can use APS to process up to ten arithmetic equations. The user also can use APS to define different configurations of stages. Besides, APS can …

Computer Analysis Of The Electrocardiogram Using Hardware Digital Signal Processing, Mohammad Ashfaque Shaikh

Theses

A system based on the microcomputer IBM PC-AT has been realized to acquire and filter the clinical electrocardiogram (ECG) data in real time. The system program further detects and analyzes the ECG signals for possible cardiac arrhythmias.

This research is based on work done by previous researchers and achieves significant goals towards achieving on-line arrhythmia detection using a microcomputer. The system uses the hardware and software package ASPI 320/PC from Atlanta Signal Processors Inc. This hardware configuration uses a special purpose instrumentation microprocessor ( TMS32010 from Texas Instruments) to coprocess the ECG signals. Coprocessing the signals with the ASPI 320/PC …

Development Of A Knowledge-Based System For Human Error Analysis, Bang-Chiang Sung

Theses

Human Factors is one of several essential issues in a discussion of system productivity. Its consideration must be included in the design, development, operation, and maintenance of any human-machine system. In order to maximize the system productivity, humans must perform with their maximum possible efficiency. To achieve this, all human-related activities must be evaluated to determine their possible causes of errors and the consequences. Then, if unable to completely remove, the causes of human errors must be minimized.

This thesis integrates a knowledge of expert system into an analysis of human errors. Its objective is to develop a knowledge-based system …

Analysis Of C2 And C3 Hydrocarbons In Ambient Air. Section I ; Identification And Quantification Of Volatile Organics Emitted From A Landfill. Section Ii, Tsong-Sheng Chang

Theses

SECTION I

A method was developed to analyze Acetylene, Ethylene, Ethane, Propylene and Propane levels in the ambient air. Chlorinated compounds within the operation retention time, Methyl chloride, Methylene chloride and Vinyl chloride, were monitored also.

Four sampling sites are located at Carteret, Elizabeth, Newark and Montville in New Jersey. Samples were taken during the summer of 1988. Two sample duration periods utilizing 12 and 6 liter stainless steel canisters were set up to take 24 hour air samples and instantaneous air samples (5 minutes collection period).

The average levels of Acetylene, Ethylene, Ethane, Propylene and Propane at the four …

Kalman Filtering Applied To The Analysis Of Brainstem Auditory Evoked Potentials, Chong An Qian

Theses

The objective of this thesis is to detect the Brainstem Auditory Evoked Response (BAER) using lower numbers of averages than at present, by using an optimal smoothing method which is based on the Kalman Filter.

By using this method, the wave V latency of the BAER which is useful in testing for hearing loss can be detected with as low as 500 averages, while the traditional signal averaging method requires at least 2000 averages. Thus the time required for a hearing loss test can be reduced from one hour to approximately 20 minutes.

Also several other methods for detecting BAER …

Personal Icons, Donna Nadine Bratcher

Theses

None provided.

Classc/Elaine: A Multiple Inheritance Object Oriented C Language, Paul Kirkaas

Theses

Object oriented programming is a way of abstracting information and operations to make programming more efficient and reliable. C is a non object oriented programming language that has become a de facto language standard in academic and industrial applications because of its power and flexibility. ClassC is an attempt to add object orientation on the existing framework that C provides. Specifically, ClassC adds the new data type object, and the new aggregate declaration, class. ClassC differs from other C-based object oriented languages such as C++ Objective-C in three points: 1) ClassC provides true multiple inheritance, which is very commonly discussed …

Implementation Of A Cross Coupled Phase Locked Loop System With Closed Loop Amplitude Control, Behzad Sadeghi

Theses

A system was designed, to demodulate an FM signal in presence of an interfering signal whose frequency was very close to the desired signal, this system was implemented and tested based on the theory of cross coupled phase locked loop systems, originaly proposed by (1).

This system included two phase locked loops for the purpose of demodulation, two low pass filters and two integrators, for the purpose of amplitude estimation. Two additional phase locked loops were designed to act as a 90° phase shifter. The following is the result of the theory, design procedure and some tabulated data for this …

Simulation Of Aids Patient Detoxification By An Extracorporeal Device And Related Experimental Studies, Mansoor Yusuf Kapadvanjwala

Theses

A simple numerical simulation of an AIDS patient detoxification by an extracorporeal device for the removal of virus has been designed. The mathematical model accounts for healthy white cells (W) attacking and destroying the virus (V), while at the same time the virus attacks and infects certain white cells. The infected white cells (W_i) serve as a site for viral growth, and finally the cell is lysed, releasing a large number of viruses in the blood stream. This model can be used to predict concentrations over a given period for the patient.

The device incorporates an antitwister mechanism …

Oxidation Of Toluene, Benzene And P-Xylene In A Photoreactor, Shiey-Shiun Horng

Theses

A new photoreactor was designed with stainless steel to oxidize refractory chemicals found on the EPA priority list. This new system was investigated by conducting experiments with three three model compounds, namely, toluene benzene and p-xylene. While toluene and benzene reactions are similar, they are faster with UV/ozone than UV/H₂O₂ and p-xylene reacts even faster with UV/ozone than UV/H₂O₂. The experimental data obtained were analyzed by GC and used to interpret the reaction kinetics from proposed models. The rate constants and mass transfer coefficients were found by using the Rosenbsrock Hillclimb optimization algorithm. …

A Productivity Measurement System For Human Resources Management, Vivian C. Keenan

Theses

A Productivity Measurement System was designed to meet the needs of a company's Human Resources management. This thesis presents the design, testing, and implementation of this system.

During the design stage, the jobs and main activities were identified and the key volume indicators were established. Data was collected using time studies, work sampling techniques and historical data. Time studies and historical data were used primarily to measure the information for the activities. Work sampling techniques proved to be very effective in obtaining measurements for personal time and unavoidable delays.

The data was analyzed and time standards were set for the …

Clinical Base Station For Portable Patient Monitoring Equipment, Silin Kuang

Theses

In today's clinical environment, where it is not always desirable to have a computer terminal present, a microcontroller-based biomedical system with multi-purpose features is needed. The present work offers an approach for a clinical based desktop workstation that provides the physician with record files, general management of his patient group, and specific algorithms for patient or group analyses. The workstation has the capabilities to acquire a large number of data from a portable patient monitoring device, generate a hard copy graphic record, create a patient cardfile and an . office personnel loggin file, and check patient's appointment and emergency list. …

Istemcr : Integrated System For Truck Engine Monitoring Via Cellular Radio, Tse-Shan Pan

Theses

The study presented is aimed at the application of the Data Acquisition to The Truck Engine as the source of all the signals, with the mobile telephone Cellular Radio system.