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1997

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Soil Temperature And Fumigation Effects On Plant Phosphorus Uptake And Related Microbial Properties, Dennis L. Mccallister, L. A. Jawson, M. D. Jawson Jan 1997

Soil Temperature And Fumigation Effects On Plant Phosphorus Uptake And Related Microbial Properties, Dennis L. Mccallister, L. A. Jawson, M. D. Jawson

Department of Agronomy and Horticulture: Faculty Publications

Early season problems with growth of corn (Zea mays L.) under cool, wet conditions prompted a study of the effects of soil and environmental conditions on mineralization and plant uptake of phosphorus (P). Our objective was to determine the effect of soil test P, temperature, and soil fumigation on soil P availability and uptake during early corn growth. Corn was grown in growth chambers at temperatures of 14°C or 25°C. Soils were a high-P Hastings silty clay loam (fine, montmorillonitic, mesic Udic Argiustoll) and a low-P Sharpsburg clay loam (fine, montmorillonitic, mesic Typic Argiudoll). Plants grew for up to …

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Multiobjective Optimization Design With Pareto Genetic Algorithm, Franklin Y. Cheng, Dan Li Jan 1997

Multiobjective Optimization Design With Pareto Genetic Algorithm, Franklin Y. Cheng, Dan Li

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This paper presents a constrained multiobjective (multicriterion, vector) optimization methodology by integrating a Pareto genetic algorithm (GA) and a fuzzy penalty function method. A Pareto GA generates a Pareto optimal subset from which a robust and compromise design can be selected. This Pareto GA consists of five basic operators: reproduction, crossover, mutation, niche, and the Pareto-set filter. The niche and the Paretoset filter are defined, and fitness for a multiobjective optimization problem is constructed. A fuzzy-logic penalty function method is developed with a combination of deterministic, probabilistic, and vague environments that are consistent with GA operation theory based on randomness …

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Performance-Based Testing Of Chemical Stabilizers, Thomas M. Petry Jan 1997

Performance-Based Testing Of Chemical Stabilizers, Thomas M. Petry

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Chemical stabilizing agents have been introduced that have performed in field applications to improve the behavior of earth materials. The same agents and materials subjected to standardized laboratory tests have often resulted in no improvement. For example, the tests often require pulverization of materials to finer states than are needed in the field or may require remolding when field applications are done in situ, as with injection applications. Some of the physical tests do not place treated materials in a situation resembling conditions in the field, yet they are applied to determine the use of these agents. The experiences of …

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A Practical Implementation Of High-Speed Communication Using Digital Subscriber Line Technology, Todd Engle Jan 1997

A Practical Implementation Of High-Speed Communication Using Digital Subscriber Line Technology, Todd Engle

Theses

This thesis creates a plan for the practical implementation of high-speed communication for residences and businesses. By implementing low-cost, high-speed communication on a global scale, tremendous benefits can occur in areas such as Internet communication, interactive multimedia, telecommuting, and distance learning. Despite several successful trials of various high-speed communication technologies, many barriers remain before deployment can occur to the general public. This thesis proposes a plan to bridge the gap between theoretical test studies and global implementation. This thesis evaluates three communication systems as potential solutions for high-speed communication and selects one system as the solution. The three candidate systems …

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Multidimensional Subset Sum Problem, Vladimir Kolesnikov Jan 1997

Multidimensional Subset Sum Problem, Vladimir Kolesnikov

Theses

This thesis explores new modifications to the successful LLL approach to solving the Subset Sum problem. This work is an optimization of the matrix representation of an instance. Traditionally, the basis matrix contained only one column with set elements and the sum. In this thesis we suggest having several data columns (thus introducing multidimensionality). This allows us to reduce the size of coulmn entries which changes the complexity of the problem. Splitting the data into multiple columns greatly simplifies the task of solving the Subset Sum problem. However, other problems arise when we try to generate multiple columns. Here we …

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A Comparison Of Pattern Classification Techniques For Orienting Chest X-Rays, Martin R. Hoffmann Jan 1997

A Comparison Of Pattern Classification Techniques For Orienting Chest X-Rays, Martin R. Hoffmann

Theses

The problem of orienting digital images of chest x-rays, which were captured at some multiple of 90 degrees from the true orientation, is a typical pattern classification problem. In this case, the solution to the problem must assign an instance of a digital image to one of four classes, where each class corresponds to one of the four possible orientations. A large number of techniques are available for developing a pattern classifier. Some of these techniques are characterized by independent variables whose values are difficult to relate back to the problem being solved. If a technique is highly sensitive to …

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Application Of Statistical Techniques In The Evaluation Of Packaging Processes, Mark Harris Jan 1997

Application Of Statistical Techniques In The Evaluation Of Packaging Processes, Mark Harris

Theses

Production processes for packaging components frequently are subject to variation that can result in the manufacture of unusable components. Significant exposure to both the component supplier and the customer is incurred when the production process capability is not established prior to the start of production. "Application of Statistical Techniques in the Evaluation of Packaging Processes" presents a program of statistical tests for problem resolution as well as for the qualification of a new process. Training of manufacturing personnel in the fundamentals is a necessary element to accurately apply and interpret the results. The successful use of statistics requires knowledge of …

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Design Of An Automatic Postal Service System, Chia-Chuan Lin Jan 1997

Design Of An Automatic Postal Service System, Chia-Chuan Lin

Theses

Not provided.

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Healthy Start: Strengthening The Lives Of Children And Families, Michelle Hardy Jan 1997

Healthy Start: Strengthening The Lives Of Children And Families, Michelle Hardy

Cal Poly Humboldt theses and projects

My project consists of an examination of an initiative called Healthy Start, which was developed to better the lives of children and families. The objective of Healthy Start is to make improvements with children and families in terms of school performance and physical and social well-being. The Healthy Start Support Services for Children Act (Senate Bill 620) is California's first statewide effort to place comprehensive support services at the school site. During my study, I investigated five Healthy Start sites in Northern California, four of which are located in Humboldt county. My reason for doing this project is to evaluate …

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Bridge Engineering For The Elementary Grades, Douglas R. Carroll Jan 1997

Bridge Engineering For The Elementary Grades, Douglas R. Carroll

Mechanical and Aerospace Engineering Faculty Research & Creative Works

A one-hour presentation was developed to get elementary school students interested in engineering. The presentation begins with the students building six feet long, structurally sound bridge which they can crawl across. A pictorial presentation helps them learn to identify some of the different types of bridges: truss, stone arch, steel arch, concrete girder, cable-stayed, and suspension. They are introduced to the fundamental engineering concepts of tension and compression. These concepts are reinforced by demonstrating that if a tension member is replaced with a chain then the bridge is still strong, but if a compression member is replaced with a chain …

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Eigenvalue And Eigenvector Determination For Damped Gyroscopic Systems, D. P. Malone, Don L. Cronin, Timothy W. Randolph Jan 1997

Eigenvalue And Eigenvector Determination For Damped Gyroscopic Systems, D. P. Malone, Don L. Cronin, Timothy W. Randolph

Mechanical and Aerospace Engineering Faculty Research & Creative Works

No abstract provided.

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Analyisis Of The Small Parcel Express Carrier Distribuion Envirnonment For Drop Height Statistical Referencing And Development Of Laboratory Test Specifications, Scott Wilson Jan 1997

Analyisis Of The Small Parcel Express Carrier Distribuion Envirnonment For Drop Height Statistical Referencing And Development Of Laboratory Test Specifications, Scott Wilson

Theses

The distribution environment is an ever-changing industry. Test specifications used in laboratory testing to protect product transported through various channels of this environment require constant evaluation. A study to monitor the manual handling of the small parcel express carrier distribution environment was undertaken to quantify the dynamics experienced and better ensure confidence of the parameters for laboratory test specifications. Two package designs, differing in weight and size, were analyzed in 158 trips with and without the use of handholds. Significant drop heights, quantity of drops and orientations of these drops were collected using environmental recorders. The data was analyzed statistically …

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Interactive Multimedia: Defining A Place In History, Erika Sears Jan 1997

Interactive Multimedia: Defining A Place In History, Erika Sears

Theses

Not provided.

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Moisture Gain Of Biscuits In Hermetically-Sealed Packages Versus Non-Hermetically-Sealed Packages, Amran Alabakan Jan 1997

Moisture Gain Of Biscuits In Hermetically-Sealed Packages Versus Non-Hermetically-Sealed Packages, Amran Alabakan

Theses

The objective of this study was to examine the affect of hermetic sealing on extending the shelf life of a biscuit product. Hermetically sealed packages were compared with non-hermetically-sealed packages received from the biscuit manufacturer. The package materials were the same so the only variable was the hermetic integrity of the package. A pressure test was conducted to determine the hermetic integrity of the package samples. The maximum moisture content that the biscuits gained before they were considered spoiled was then determined. Moisture gain of biscuit products kept in a 100% RH environment was monitored by recording the changes in …

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Hausdorff Dimension Of Boundaries Of Self-Affine Tiles In R N, J. J. P. Veerman Jan 1997

Hausdorff Dimension Of Boundaries Of Self-Affine Tiles In R N, J. J. P. Veerman

Mathematics and Statistics Faculty Publications and Presentations

We present a new method to calculate the Hausdorff dimension of a certain class of fractals: boundaries of self-affine tiles. Among the interesting aspects are that even if the affine contraction underlying the iterated function system is not conjugated to a similarity we obtain an upper- and and lower-bound for its Hausdorff dimension. In fact, we obtain the exact value for the dimension if the moduli of the eigenvalues of the underlying affine contraction are all equal (this includes Jordan blocks). The tiles we discuss play an important role in the theory of wavelets. We calculate the dimension for a …

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A Study To Examine Patterns And Performance Trends Among Black And White School Students On A National Level From The 1970s To The 1990s, Otis L. Miller Jan 1997

A Study To Examine Patterns And Performance Trends Among Black And White School Students On A National Level From The 1970s To The 1990s, Otis L. Miller

OTS Master's Level Projects & Papers

This study will attempt to accomplish the following research goals: 1. Explore some of the characteristics of low self-esteem or image and motivation among black school children; 2. Examine the academic performance trends between black and white school children by making a comparison between dropout rates, science scores, mathematics scores, and reading scores; 3. Analyze the overall effectiveness of public school desegregation.

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Vision Assisted Robotic Assembly Of Miniature Parts, Guy Vottis Jan 1997

Vision Assisted Robotic Assembly Of Miniature Parts, Guy Vottis

Theses

The objective of this thesis was to design and build a work cell that utilized a robotic vision system to assemble a micro motor. The work cell design consisted of an Adept SCARA robot with a vision system, end-of-arm tooling, and a combination work surface/ lighting system. On-screen vision tools were applied to images of the parts, both binary and gray scale, to assist in accurate part recognition. Using these images, retained by the vision system as reference, the robotic vision software was programmed to enable the robot to pick up the various parts in random positions within the cell …

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Vibration Analysis Of A Diesel Engine Mounted On A Test Chassis, Quan Le Jan 1997

Vibration Analysis Of A Diesel Engine Mounted On A Test Chassis, Quan Le

Theses

This paper presents vibration analyses performed on a diesel engine mounted on a test chassis. Four methods were used in analyzing engine vibrations on the test chassis. Static engine vibration analysis was an experimental method used to identify natural engine frequencies and modes shapes on the test chassis. In this technique, the non-running engine was excited by an external input force. A running engine analysis was used to determine engine resonance frequencies. In this analysis, the engine was excited by the running dynamics of its components. Engine speeds at those resonance frequencies were also determined in this test. Thirdly, lumped …

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Kentucky Traffic Accident Facts 1997 Report, Kentucky Transportation Center, Kentucky State Police Jan 1997

Kentucky Traffic Accident Facts 1997 Report, Kentucky Transportation Center, Kentucky State Police

Kentucky Transportation Center Research Report

KENTUCKY’S TRAFFIC ACCIDENT FACTS report for 1997 is based on accident reports submitted to the Accident Unit housed in the Kentucky State Police Information Services Branch, Records Section. As required by Kentucky Revised statutes 189.635, “every law enforcement agency whose officers investigate a vehicle accident of which a report must be made...shall file a report of the accident...within ten days after investigation of the accident upon forms supplied by the bureau.” The stated purpose of this requirement is to utilize date on traffic accidents” for such purposes as will improve the traffic safety program in the Commonwealth.” Data contained in …

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Microwave Plasma Chemical Vapor Deposited Diamond Tips For Scanning Tunneling Microscopy, Sacharia Albin, Jianli Zheng, John B. Cooper, Weihai Fu, Arnel C. Lavarias Jan 1997

Microwave Plasma Chemical Vapor Deposited Diamond Tips For Scanning Tunneling Microscopy, Sacharia Albin, Jianli Zheng, John B. Cooper, Weihai Fu, Arnel C. Lavarias

Electrical & Computer Engineering Faculty Publications

Diamond microparticles were grown on etched tungsten wires using a microwave plasma-assisted chemical vapor deposition process. The apexes on cubo-octahedral particles bound by {100} and {111} facets were effectively used as tunneling tips for scanning tunneling microscopy. The atomically resolved surface image of highly oriented pyrolytic graphite was acquired. Tunneling characteristics revealed a higher electron emission from the diamond tips than that from the platinum–iridium tips. The same diamond tips were used to produce surface indentation and its image. © 1997 American Institute of Physics.

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Optical And Electrical Properties Of Cualse² Thin Films Obtained By Selenization Of Cu/Al/Cu... Al/Cu Layers Sequentially Deposited, J. C. Bernède, S. Marsillac, C. El Moctar, A. Conan Jan 1997

Optical And Electrical Properties Of Cualse² Thin Films Obtained By Selenization Of Cu/Al/Cu... Al/Cu Layers Sequentially Deposited, J. C. Bernède, S. Marsillac, C. El Moctar, A. Conan

Electrical & Computer Engineering Faculty Publications

Optical and electrical properties of CuAlSe2 thin films obtained by selenization of Cu/Al/Cu...Al/Cu layers sequentially deposited have been investigated. It is shown that the expected energy gap (2.67 eV) is measured for well crystallized films, whereas a slightly higher value is measured for films not so well crystallized. Raman diffusion also shows differences between well and poorly crystallized films with peaks corresponding to the reference powder for the former samples. A p-type conductivity is found whatever the crystalline quality of the samples. The conductivity of the films depends also strongly on their crystalline properties. When the films are badly …

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Teacher's Attitudes Of Block Scheduling And Lesson Preparation Quality/Time In Two Virginia Beach City Public High Schools, Christin G. Browning Jan 1997

Teacher's Attitudes Of Block Scheduling And Lesson Preparation Quality/Time In Two Virginia Beach City Public High Schools, Christin G. Browning

OTS Master's Level Projects & Papers

The problem of the study was to compare teacher's lesson preparation time and utilization of alternative teaching methods during block scheduling as compared to the traditional seven-bell schedule at Kempsville and Princess Anne High Schools in Virginia Beach, Virginia

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A Season Inside The Old Dominion Monarchs Men's Basketball Team, Sean K. Burris Jan 1997

A Season Inside The Old Dominion Monarchs Men's Basketball Team, Sean K. Burris

OTS Master's Level Projects & Papers

The following goal was established to assist in this study. 1. To give the fans of Old Dominion University the opportunity to have an inside look at what the basketball team goes during the course of a season. A) To inform the average fan about what the college basketball player has to go through during the school year; B) To allow the average fan to have a closer look at what the coaches have to endure during the school year.

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The Effect Of Safety Training At The Ford Assembly Plant In Norfolk, Virginia, Maggie Daniels Jan 1997

The Effect Of Safety Training At The Ford Assembly Plant In Norfolk, Virginia, Maggie Daniels

OTS Master's Level Projects & Papers

These research goals were established to answer the problem and provide guidelines to conduct the research: 1. Determine when, how often, and under what conditions safety training was given; 3. Determine what teaching method was used in the delivery of safety training; 3. Determine the amount of lost time due to safety violations before and after the safety training was given.

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Patterns Of Safety Issues Found At Western Branch High School, Chesapeake, Virginia, Bruce Lytle Jan 1997

Patterns Of Safety Issues Found At Western Branch High School, Chesapeake, Virginia, Bruce Lytle

OTS Master's Level Projects & Papers

The following questions need to be answered to solve the research problem: 1. What were the most prevalent crimes that have occurred at the school? 2. Which crimes pose the greatest threat to students and staff? 3. What procedures can be implemented to reduce threatening crimes?

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Drug Prevention Programs Used By Hampton And Newport News School Districts, Charles E. Casey Jan 1997

Drug Prevention Programs Used By Hampton And Newport News School Districts, Charles E. Casey

OTS Master's Level Projects & Papers

Although each school district's drug prevention program operates as a separate entity from the next one, managers might operate their programs more efficiently if information is discovered that could improve them During this study, the researcher would: 1. Identify major differences between the Newport News and the Hampton City Schools Drug Prevention Programs; 2. Determine by comparison if the two drug prevention programs are effective as used or can be improved; 3. Determine if there is a direct correlation between drug usage and a drop in grades; 4. Assess whether each drug prevention program is designed to prevent drug usage …

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A Follow-Up Study Of Technology Education Graduates Of Old Dominion University 1986-1996, Mark D. Siciliano Jan 1997

A Follow-Up Study Of Technology Education Graduates Of Old Dominion University 1986-1996, Mark D. Siciliano

OTS Master's Level Projects & Papers

Through the follow-up study, data was collected toward fulfilling the following objectives: 1) to determine if graduates of Old Dominion University's Technology Education Undergraduate Program were adequately prepared to assume teaching positions; 2) to determine whether the goals established in the college's conceptual framework were being attained; 3) to determine if these graduates are teaching traditional vocational programs or technology education; 4) to determine what improvements can be made to the undergraduate curriculum at Old Dominion University based upon graduate's feedback.

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A Study To Examine The Reasons For Licensure Preferences By Mctp Students, James S. Mcneill Jan 1997

A Study To Examine The Reasons For Licensure Preferences By Mctp Students, James S. Mcneill

OTS Master's Level Projects & Papers

The following goals were used to direct this study: 1. Determine the exact reason for the middle school licensure preference by MCTP graduate students; 2. Determine if the age of their prospective students was a reason for their preference for middle school licensure; 3. Determine if MCTP graduate students choose middle school licensure because their military and undergraduate experience lends itself best to this area of teaching.

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Turbulence Modeling Of The Toroidal Wall Heat Load Due To Shear Flows Over Cavities In The Neutral Gas Blanket Divertor Regime, George Vahala, Linda L. Vahala, Joseph Morrison Jan 1997

Turbulence Modeling Of The Toroidal Wall Heat Load Due To Shear Flows Over Cavities In The Neutral Gas Blanket Divertor Regime, George Vahala, Linda L. Vahala, Joseph Morrison

Electrical & Computer Engineering Faculty Publications

Heat loads to the target plate in reactor tokamaks are estimated to be orders of magnitude higher than those that can be withstood by known materials. In regimes of plasma detachment, there is strong evidence that plasma recombination occurs near the divertor plate, leading to a cold neutral gas blanket. Because of the strong coupling between the plasma and the neutrals within the divertor region, there is significant neutral flows along field lines up to Mach 1.2 and Reynolds numbers over 1000. The effects of three dimensional (3D) neutral turbulence within the gas blanket on heat deposition to the toroidal …

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A Study Of Prisoners Of War In The Twentieth Century, Victor Montejo Jan 1997

A Study Of Prisoners Of War In The Twentieth Century, Victor Montejo

Student Theses and Dissertations

No abstract provided.

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