Digital Commons Network^™

Identification Of Material Constants Of Human Bone Using Finite Element Method For Micropolar Elasticity, Sajid Mannan Sayed

Theses

Bone differs from most engineering materials in the composition of its structure. The classical theory of elasticity fails to correctly predict the stress concentration effects in bones with precracked or notched surfaces, and can be applied only to those materials which exhibit more homogeneity and isotropicity than bone. Therefore, generalized continuum theories, which have addditional degrees of freedom, must be used to determine the stress concentration effects in human bone, especially in regions of high strain gradient, such as a hole or an interface.

In this thesis, efforts have been made to identify the material constants of human bone since …

Computerized Work Measurement System, Vrajesh Shah

Theses

This thesis is concerned with the application of computerized work measurement to improve productivity and efficiency of production workers. In doing so, the techniques of MOST (Maynard Operation Sequence Technique) is studied to determine its appropriateness for industrial use. The advantages and disadvantages of the system are studied as to its value to large and small industries.

Similitude Analysis Of Model Experiments Of Piles Driven To Rock, George Nicou Georghoudes

Theses

This thesis investigates the similitude requirements for the Dynamic Pile Driving Apparatus in the New Jersey Institute of Technology Laboratory. The apparatus is being used to perform model tests to study bearing stratum fracturing caused by driving pile groups to weak rock.

Two approaches were used to establish similitude between the model and actual field conditions. The first approach utilizes dimensional analysis to develop a relationship between the energy delivered to the rock mass by the pile and the unit length. The second approach proposes a procedure to establish an empirical relationship between the threshold energy to fracture the rock …

Electrochemical Reduction Of Quaternary Ammonium Salts, Rudolph K. Kapichak

Theses

The electrochemical reduction of two highly hindered quaternary ammonium salts was attempted. The reductions were performed in hexamethylphosphoramide at a controlled potential using platinum electrodes. It was anticipated that these reductions would provide a route to the formation of anti-Bredt bridgehead olefins. This work is an extension of the work of Dubois, Monvernay and Lacaze who electrochemically reduced quaternary ammonium salts such as trimethyl-t-butylammonium iodide (XX).

Trimethy1-2,4,4-trimethy1-2-pentylammonium iodide (XXIII) was reduced to form 2,4,4-trimethyl-l-pentene (XXVI) and 2,2,4-trimethylpentane (XXV). The yields of the two runs of this reduction were 10% and 20% and in the first run of the reduction 75% …

Optimization Of Reactive Ionized Cluster Beam (R-Icb) Technique For Deposition Of Gan Films, Veronica S. Kyriacou

Theses

The deposition of GaN film onto glass substrate, using the Reactive - Ionized Cluster Beam deposition technique was studied. The creation of clusters is dictated by various parameters such as the vacuum pressure inside and outside the crucible, the crucible temperature, and the nozzle diameter of the crucible. Optimization of these parameters was experimentally studied, and deposition of gallium films on glass substrates was tried as a first step.

The direct heating method was used at first to get the 1100¬1300°C crucible temperature which was required for the creation of gallium clusters. Although different tungsten wire diameters and different number …

Design And Construction Of An Atomic Nitrogen Source For Ion Cluster Beam Deposition Of Thin Film Nitrides, Sahar Elgharib

Theses

The objective of this thesis research was to generate atomic nitrogen to react with Ga being deposited by an Ion Cluster Beam method to prepare GaN thin films. An experimental reactor was designed and constructed to generate atomic nitrogen by making use of a microwave induced discharge to dissociate molecular nitrogen into atomic nitrogen. The concentration and the flow rate of the atomic nitrogen arriving at the substrate were measured by titration with nitrous oxide. The experiments were done with 0.32 square cm quartz tubing at room temperature over the nitrogen pressure range from 0.14 torr to 0.56 torr. Results …

Computer Application Of Project Planning And Scheduling With Cpm, Mohamed Tarek Abdel-Aziz

Theses

Scheduling is one of the most important tools for project management and control, and the CPM is one of the techniques used in project scheduling.

The primary objective of this thesis is to develop a CPM computer package using a microcomputer. The package is constituted in Basic (Applesoft Basic) for use on Apple II Plus, IIe or IIc.

The package is intended to be available to users without sufficient knowledge about computer. And it consists of two computer programs. The first computer program is the CPM-I which schedules project activities with unlimited resources. The second computer program is the CPM-II …

Computational Method For Solving The Kinematics Of Mechanisms Using Matrix Methods, Rajat Pardal

Theses

This thesis deals with the computational methods for kinematics of mechanisms using matrix methods. The method is particularly suited to the complex mechanism problems for which hand calculations are difficult. The thesis first reviews the matrix methods on which the program IMP is based. A computer program developed by Ve Tung using the same theory is enhanced in this thesis. By using this revised program, comparison between the non-linear algebraic approach and the matrix methods developed in this thesis has been made by the help of suitable examples. Further, it has been proved that the Integrated Mechanisms Program does not …

Optimum Design Of Structures Subject To Buckling Constraints, Thomas G. Looby

Theses

This thesis describes the optimal design of bar type planar truss structures subject to stress and buckling constraints. All of the structures considered are modeled using the direct stiffness finite element approach. A mathematical programming method incorporating a feasible directions routine is utilized to develop least weight designs for these conditions. The existing structural optimization programme CADOS which has successfully solved stress and deflection problems for this class of structures is adapted herein to treat local stability constraints based on Euler bucking criteria.In addition the optimization routine is modified to more effectively treat, infeasible starting designs. These modifications were tested …

Storage Of Information On Color Photographic Materials With Applications To Optical Memory Disks, Andrew Juenger

Theses

An experiment was performed to investigate the information capacity of Ilford Cibachrome Micrographic Film type CMM.F7, Kodak Aerial Color Film type SO-242, and Kodak Vericolor Print Film type 4111. The results indicated that the filmSj-had binary single layer information capacities of 9.51 x 10 , 3.27 x 10 , and 0.87 x 10 bits per square centimeter respectively. It was estimated that the CMM.F7 material was capable of resolving three density levels for c trilayer multilevel capacity of 45.2 x 10 bits per square centimeter, followed by SQ-242 and 4111 with five and six levels yielding 22.8 x 10 and …

An Implementation Of The Chor-Rivest Knapsack Type Public Key Cryptosystem, Robert Jr T. Salamone

Theses

The Chor-Rivest cryptosystem is a public key cryptosystem first proposed by MIT cryptographers Ben Zion Chor and Ronald Rivest [Chor84]. More recently Chor has imple mented the cryptosystem as part of his doctoral thesis [Chor85]. Derived from the knapsack problem, this cryptosystem differs from earlier knapsack public key systems in that computa tions to create the knapsack are done over finite algebraic fields. An interesting result of Bose and Chowla supplies a method of constructing higher densities than previously attain able [Bose62]. Not only does an increased information rate arise, but the new system so far is immune to the …

Management Of Personnel Systems, James P. Ward

Theses

The "Management of Personnel Systems" course (BA-332), taught at Lindenwood College in Spring 1986, provides a comprehensive framework for understanding key components in personnel and industrial relations. Designed for graduate-level students, the course emphasizes both theoretical foundations and practical applications of human resource management. Its core objective is to equip students with the philosophy, skills, and experiential learning necessary to operate effectively within the personnel function of organizations.

The syllabus covers a broad spectrum of topics, including job analysis and design, staffing and recruitment, equal employment opportunity, performance appraisal systems, compensation and benefits, labor relations, collective bargaining, organizational development, safety …

A Suggested Personal And Family Care Curriculum For The Vocational Skills Centers Of The Special School District Of St. Louis County, Ruth Elaine Hellweg

Theses

A Suggested Personal and Family Care Curriculum for the Vocational Skills Centers of the Special School District of St. Louis County is designed to provide an open entrance-open exit approach to developing skills for coping with specific activities of daily living. It is intended for use with handicapped students of all categories including BD, LD, MR, SH, and orthopedically handicapped and could be used with slow learners in any area. It is a task analyzed curriculum, written with measurable behavioral objectives to facilitate IEP formulation. Areas covered are grooming and hygiene, nutrition, food preparation, first aid, home health, safety, substance …

Marketing Customer Service Within The Information Movement And Management Industry, Mark Jones

Theses

The goal of this project is to determine what characteristics of the service firms are considered critical to success of vendors within the information movement and management industry.

The first task undertaken was to determine a definition for the information movement and management industry and which firms were major competitors within the industry . The size of the industry in terms of employees and revenues was then estimated. Some of the characteristics of the major competitors were then expanded.

The next activity involved the determination of what factors the information movement and management market members used to select a vendor …

A Curriculum For The Teaching Of Writing At The Fifth Grade Level Using Cerebral Symmetry, Karen Sue Roth

Theses

Children's writing doesn't just happen. The transferring of private thoughts onto paper is a fragile and complicated press. To make the best use of instructional time and assure the quality of children's writing experiences, this author upon reviewing the current research felt a writing program based on integrating the right and left modes of thinking in a non-threatening environment was necessary. This is a curriculum designed to involve both modes of perceiving. It allows for the right hemisphere modes by encouraging clustering, body movement, color, image making, and metaphoric thinking. It enhances the left hemisphere modes by providing exercises for …

Discrimination In The Assessment Process: The Role Of Professional Appraisal, Christopher G. Sansone

Theses

The thesis Discrimination in the Assessment Process: The Role of Professional Appraisal by Christopher G. Sansone explores the complexities of property tax assessment and how disparities in appraisal practices contribute to inequities. It argues that many citizens lack an understanding of property taxation, making them vulnerable to unfair assessments. The study examines the historical evolution of property taxation, including taxpayer revolts that have shaped modern assessment policies. It highlights issues such as assessment discrimination against lower-income property owners, political influences on the appraisal process, and the impact of legislative and judicial decisions.

A key argument is that professional real estate …

Tradition And Transformation In Arab Education: The Challenge For Saudi Arabia, Maha Muhammad Lufti Adeeb Al-Najami

Theses

This thesis focuses on the developments in education in the Arab world .. It begins with a broad historical survey of traditional education in the Middle East. Traditional educational institutions are viewed in the context of the Islamic religious heritage and the various Islamic dynasties which developed throughout the Middle East. Then, the consequences of the Western influence on Arab education are explored. A brief history of Western colonial interests in the Middle East is given focusing on the effects of these colonial interests on the traditional educational programs. The Western impact began the process of modernization in the Arab …

A Review Of Personnel Policies And Procedures Developed For St. Charles County In 1984, Richard L. Balicki

Theses

This paper will discuss the development, design and formulation of personnel policies and procedures for St. Charles County in 1984. At the time the process of development started, the county was without an approved personnel policies and procedures system and was concerned about a possible federal audit that could result in their losing federal funds because of the lack of formal policies.

In order to develop a system that would be used by the various county offices, input was sought from elected and appointed officials as well as other levels of county employees. The success and failure of this method …

Addition Of Structured Records To The Unix™ And Ms-Dos™ File Systems, Nancy Wisotzke

Theses

A file system consists of operating system code supporting the I/O operations that open, close, create, read and write to files. Record oriented I/O is not a feature of either the UNIX or the MS-DOS native file system. The data is stored by the file system as a sequence of bytes. It is the task of the user to design an application dependent structure on the file system. In the case of logically related fixed or variable length data, a record structure is desirable. This thesis describes a set of extensions to the UNIX and the MS-DOS file systems that …

Model Experiment Of Rock Fracturing Caused By Driving Piles, Dai-Heyng Lee

Theses

The geotechical construction problem of rock fracturing caused by pile driving is investigated using a laboratory model. One inch diameter closed bottom steel pipes were driven into a simulated rock mass consisting of masonry bricks having an average compressive strength 3,200 psi. Both single pile and five pile model groups were tested. The single pile tests indicated that a threshold of penetration behavior occurred at a theorical hammer energy of 100 ft-lb and this was used for the group tests. Penetration rates were measured using an optical level.

Piles in the five pile model group were initially driven to a …

Laminar Flow Through A Porous Annulus With Surface Suction, Stelios C. Nicolaides

Theses

A theoretical investigation was conducted to obtain the velocity, pressure and shear stress distributions for incompressible, steady, fully developed, laminar flow through an annulus, with a uniformly porous inside tube wall. Suction at the walls is a result of the pressure difference across the porous wall.

The continuity equation, momentum equation and the Darcy's law for suction velocity are analysed with an integral method. The resulting differential equations were solved using a numerical technique.

For the same radii ratio, dimensionless inlet pressures on both sides of the porous wall and dimensionless porous resistance, the dimensionless length required to reach zero …

Analysis Of Bolted Rock By Computer Modeling, Niann-Chyun Wang

Theses

A computer model-based on VAX-ANSYS system was developed to model the behavior of multi-layer rock systems reinforced by pretensioned rock bolts. Three models were utilized for this study. The third model represents the friction between interlayers occuring due to the tensioned rock-bolts. Results obtained from this study compare favorably with those obtained from equations developed from model studies. An attempt has been made to study the effects of creep on the behavior of the rock-layer system.

Spectrum Analysis And Real-Time Analysis Of Electroencephalograms, Suzanne Hesook Won

Theses

The analysis of the EEG background waveform is studied by two techniques, spectrum analysis and real-time analysis. The spectrum analysis is performed by using Fast Fourier Transformation (FFT) on a segment of the signal. The resulting signal is classified into different band types such as delta, theta, alpha and beta, to see the power in each band, and the magnitude of the power on the left and right side if the brain is evaluated for asymmetry. The mean power frequency shows the frequency where the maxinum power exists in each band type. This type of analysis provides overall information of …

Microbial Characteristics Of An Industrial Mixed Liquor After Exposure To Phenolic Compounds, Patricia L. Boyle

Theses

The microbial characteristics of a mixed population from the Passaic Valley Sewerage Commissioners (PVSC) Wastewater Treatment Plant in Newark were examined. This plant handles about 250 million gallons per day of mixed sewerage, with a large industrial component. The microbial species were characterized using standard plating techniques, morphology, microscopic observation, and biochemical tests. These characteristics were determined for the fresh liquor, and after successive batch exposure to phenol (100 ppm) and 2-chlorophenol (20 ppm). Predator/prey, gram positive to gram negative bacteria ratios, and the fungi and protozoan populations were also determined. These results were compared with those previously obtained using …

A Study Of Parameters Indicating Microbial Activity In Mixed Aerobic Cultures, William Smith

Theses

Mixed liquor suspended solids (MLSS), oxygen uptake rate (OUR) and general dehydrogenase activity, as expressed by the reduction of the electron-acceptor Dye 3-(4',5'-dimethylthiazol-2-yl)-2, 4-diphenyltetra-zolium bromide (MTT), were compared for their ability to measure microbial activity in mixed aerobic cultures. A fourth parameter, specific enzyme activity, was dropped from consideration because of the difficulty of developing a satisfactory experimental technique. Measurement of the parameters was applied to the biodegradation of phenol and o-chlorophenol by activated sludge from a municipal sewage treatment plant, and by two commercially available bacterial preparations.

MLSS, although the most commonly used of the three parameters tested, is …

Access Control Models: Authorization Mechanisms For Database Management Systems, Diana Anglero

Theses

None provided.

Neighborhood Aesthetics, Cleveland Mills

Theses

None provided.

Toward A New Visual Vocabulary: A Guide To Syntactic Variables In Graphic Design, Craig Malmrose

Theses

None provided.

A Recursive Fractal Design Generator For Dimensions Zero To Two Implemented Within A Two Dimensional Core Graphics Package, Elizabeth Lehmann

Theses

This thesis incorporates the technique developed by Benoit Mandelbrot to describe recursive fractals into an interactive graphics package based on the Core Graphics System (Core) produced by an ACM SIGGRAPH Committee (1977, 1979). The graphics package encompasses simple standard geometric shapes as well as the recursive fractals. To draw those fractals requires knowing both the basic shape or generator, and the points of recursion. These two pieces are acquired through the using of two windows which allow the generator and the points of recursion to be built. Once built, the fractal recursion level is chosen interactively on the main drawing. …

Adaptive Pattern Recognition Of Hand-Written Chinese Characters Using Fourier Transforms Of Projection Profiles, Der-Tsyi Chuang

Theses

None provided.