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2003

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Nitrogen Application Influences The Critical Period For Weed Control In Corn, Sean P. Evans, Stevan Z. Knezevic, John L. Lindquist, Charles A. Shapiro, Erin E. Blankenship Jan 2003

Nitrogen Application Influences The Critical Period For Weed Control In Corn, Sean P. Evans, Stevan Z. Knezevic, John L. Lindquist, Charles A. Shapiro, Erin E. Blankenship

Department of Agronomy and Horticulture: Faculty Publications

The critical period for weed control (CPWC) is the period in the crop growth cycle during which weeds must be controlled to prevent unacceptable yield losses. Field studies were conducted in 1999 and 2000 in eastern Nebraska to evaluate the influence of nitrogen application on the CPWC in dryland corn in competition with a naturally occurring weed population. Nitrogen fertilizer was applied at rates equivalent to 0, 60, and 120 kg N ha-1. A quantitative series of treatments of both increasing duration of weed interference and length of weed-free period were imposed within each nitrogen main plot. The …

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Involving Engineering With In-Service K-4 Teachers, Theresa M. Swift, Steve Eugene Watkins, Kristine Swenson, Evalee Lasater, Robert Mitchell Jan 2003

Involving Engineering With In-Service K-4 Teachers, Theresa M. Swift, Steve Eugene Watkins, Kristine Swenson, Evalee Lasater, Robert Mitchell

Electrical and Computer Engineering Faculty Research & Creative Works

A strong workforce in science and engineering and literate citizens in a technology-based society depends on an educational system that prepares students in science, mathematics, and engineering. Unfortunately, many K-12 students lose interest in such topics early in their school years. Engineering applications can capture the imagination of students and illustrate the concepts in science and mathematics. Level-appropriate resources are as necessary for primary teachers and our young scholars as for teachers and students in higher grades. A model for interaction between engineers and K-4 teachers is proposed. The State of Missouri defines curriculum standards in each subject area and …

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The Cosmic Battle For Planet Earth : Essays In Honor Of Norman R. Gulley, Jiri Moskala, Ron Du Preez Jan 2003

The Cosmic Battle For Planet Earth : Essays In Honor Of Norman R. Gulley, Jiri Moskala, Ron Du Preez

All Books

No abstract provided.

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Best Practices For Integration Of Iso 14001 Environmental Management Systems Into Small To Medium Size Businesses, Najib Hakim Jan 2003

Best Practices For Integration Of Iso 14001 Environmental Management Systems Into Small To Medium Size Businesses, Najib Hakim

Theses

Small to Medium size Businesses (SMBs) are now confronted with a new challenge; "Would it be appropriate to implement and incorporate a strategic Environmental Management System (EMS) into their business?" SMBs have to live up to certain environmental responsibilities similar to large corporations. Major corporations are starting to favor suppliers that have a certified ISO 14001 environmental management system, so the question for many SMBs is, "Is it feasible to incorporate such a system?" Industries currently face a certain degree of challenge when it comes to the environment, environmental performance, and demands by society for cleaner, more efficient processes. In …

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Web Crippling Of Cold-Formed Steel Beams At End Supports, M. W. Holesapple, Roger A. Laboube Jan 2003

Web Crippling Of Cold-Formed Steel Beams At End Supports, M. W. Holesapple, Roger A. Laboube

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This investigation focused on the effects of overhang length on the web crippling capacity of cold-formed steel members. the current design recommendations in North America do not provide for an increase in web crippling capacity for end-one-flange loading when an overhang is present beyond the end support. the test specimens used for the investigation were single web C-sections and Z-sections. the current design requirements for end-one-flange web crippling capacity were found to be conservative for overhang lengths ranging from 0.5 h to 1.5 h , where h is the web depth. However, the design practice that permits the application of …

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Unsupervised Skin Lesion Classification And Matching, Paula Yandow-Reilly Jan 2003

Unsupervised Skin Lesion Classification And Matching, Paula Yandow-Reilly

Theses

According to the American Cancer Society (ACS), since 1973, the mortality rate for melanoma has increased by 44%. The number of serious skin cancers diagnosed has also more than doubled in that same period. Even though serious skin cancers (melanoma) account for only 4% of skin cancer diagnoses (and skin cancer is the most common cancer) it is responsible for almost all (79%) cancer deaths. The ACS reports about 7,300 people in the United States are expected to die of melanomas in 2002, other sources put the number as high as 7,800. There are about 130,000 cases of melanoma worldwide, …

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Nonlinear H Infinity Missile Longitudinal Autopilot Design With Θ-D Method, Ming Xin, S. N. Balakrishnan Jan 2003

Nonlinear H Infinity Missile Longitudinal Autopilot Design With Θ-D Method, Ming Xin, S. N. Balakrishnan

Mechanical and Aerospace Engineering Faculty Research & Creative Works

In this paper, a new nonlinear control synthesis technique, the theta- D method, is employed to design a missile longitudinal autopilot. The θ-D technique yields suboptimal solutions to nonlinear optimal control problems in the sense that it provides approximate solution to the Hamilton-Jacobi-Bellman (HJB) equation. Semi-global asymptotic stability can be achieved by manipulating the perturbation terms which are added to the cost function in developing a series solution. Furthermore, this method can be used to provide an approximate closed-form solution to the state dependent Riccati equation. The particular θ-D methodology adopted in this paper is referred to as θ-D H …

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Cultural Differences And Organizational Leadership: Cultural Difference As Barriers To The Trans-Cultural Application Of The Concept Of Organizational Leadership, Jennifer Matic Jan 2003

Cultural Differences And Organizational Leadership: Cultural Difference As Barriers To The Trans-Cultural Application Of The Concept Of Organizational Leadership, Jennifer Matic

Theses

This study examined the impact of cultural differences on the trans-cultural application of the concept of organizational leadership. The significance of four cultural dimensions (power distance, uncertainty avoidance, individualism, and masculinity) (Hofstede, G., 1980) towards the concept of organizational leadership (Rost, J.C, 1991) was discussed and a survey as created to test for cultural differences from a leadership perspective. American and Croatian college students then completed the survey. Results showed cultural similarities for all cultural dimensions with the exception of uncertainty avoidance, which was found to be higher for the American sample than the Croatian. Consequently, it can be said …

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Pictures Maps Shadows, Leslie Grant Jan 2003

Pictures Maps Shadows, Leslie Grant

Theses

Graduate students Leslie Grant (RIT) and Alex Terzich (University of Minnesota, Twin Cities) collaborated on the production of a small book of photographs, a proposed atlas, and an architectural intervention focusing on salt mining in Livingston County, New York. Their work was based on interdisciplinary research, the interdependence of theory and practice, and an acknowledgment of the viewer as key to meaning production in art and architecture. Grant's work describes the overall scope of the thesis work, and concentrates on her work on the book of photography.

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A Framework To Assess The Value Of Web Services, Robert Campbell Jan 2003

A Framework To Assess The Value Of Web Services, Robert Campbell

Theses

Large organizations often begin to adopt new software technologies prior to establishing appropriate value frameworks. This approach may produce sub-optimal investment decisions and technology adoption rates, and introduce excessive risk. In this thesis, a value-based framework is developed for assessing the impact of Web Services technology investments on business systems development. The value factors included in the framework are data management, application development and deployment, system integration, and response time to market opportunities.

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The Dual Paths Of A Political Movement: Convergence And Divergence In Contemporary Conservative Public Address, Lyman Davis Hunt Jan 2003

The Dual Paths Of A Political Movement: Convergence And Divergence In Contemporary Conservative Public Address, Lyman Davis Hunt

LSU Doctoral Dissertations

This study examines the rhetorical choices made in public addresses by members of the contemporary conservative movement in the United States during the 1990s. The contemporary conservative movement in this instance is defined as a post World War II phenomenon. Specifically, it is argued that the popular notion of a unified conservative ascendence in America is but an illusion. Rather, two distinct tribes of conservatives, the economic and the traditional conservative, participate in a rhetorical homology that serves to hide significant ontological differences beneath the dialectical God terms freedom and order. Additionally, the charismatic nature of the term freedom authorizes …

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Impact: What Influences Finance Research?, Tom Arnold, Alexander W. Butler, Timothy Falcon Crack, Ayca Altintig Jan 2003

Impact: What Influences Finance Research?, Tom Arnold, Alexander W. Butler, Timothy Falcon Crack, Ayca Altintig

Finance Faculty Publications

Which journal articles have had the most impact on finance research? Which journals dominated finance research in the 1990s? We answer these and similar questions using a comprehensive sample of journals, an extensive time period, and a new ranking method that avoids problems inherent in the existing literature. Among our findings: six of the 10 articles most highly cited by finance journals were published in econometrics or economics journals; Journal of Finance has the most citations, but it accounts for only one of the top 10 articles; and Journal of Financial Economics has the highest impact per article.

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Breakdown Probabilities For Thin Heterostructure Avalanche Photodiodes, Majeed M. Hayat, Ünal Sako ̆Glu, Oh-Hyun Kwon, Shuling Wang, Joe C. Campbell, Bahaa E.A. Saleh, Malvin Carl Teich Jan 2003

Breakdown Probabilities For Thin Heterostructure Avalanche Photodiodes, Majeed M. Hayat, Ünal Sako ̆Glu, Oh-Hyun Kwon, Shuling Wang, Joe C. Campbell, Bahaa E.A. Saleh, Malvin Carl Teich

Electrical and Computer Engineering Faculty Research and Publications

The recurrence theory for the breakdown probability in avalanche photodiodes (APDs) is generalized to heterostructure APDs that may have multiple multiplication layers. The generalization addresses layer-boundary effects such as the initial energy of injected carriers as well as the layer-dependent profile of the dead space in the multiplication region. Reducing the width of the multiplication layer serves to both downshift and sharpen the breakdown probability curve as a function of the applied reverse-bias voltage. In structures where the injected carriers have an initial energy that is comparable to the ionization threshold energy, the transition from linear mode to Geiger-mode is …

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Optimal Excess Noise Reduction In Thin Heterojunction Al0.6Ga0.4As-Gaas Avalanche Photodiodes, Oh-Hyun Kwon, Majeed M. Hayat, Shuling Wang, Joe C. Campbell, Archie L. Holmes, Yi Pan, Bahaa E.A. Saleh, Malvin Carl Teich Jan 2003

Optimal Excess Noise Reduction In Thin Heterojunction Al0.6Ga0.4As-Gaas Avalanche Photodiodes, Oh-Hyun Kwon, Majeed M. Hayat, Shuling Wang, Joe C. Campbell, Archie L. Holmes, Yi Pan, Bahaa E.A. Saleh, Malvin Carl Teich

Electrical and Computer Engineering Faculty Research and Publications

It has been recently found that the initial-energy effect, which is associated with the finite initial energy of carriers entering the multiplication region of an avalanche photodiode (APD), can be tailored to reduce the excess noise well beyond the previously known limits for thin APDs. However, the control of the initial energy of injected carriers can be difficult in practice for an APD with a single multiplication layer. In this paper, the dead-space multiplication recurrence theory is used to show that the low noise characteristics associated with the initial-energy effect can be achieved by utilizing a two-layer multiplication region. As …

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Reading Reminder: A New Tool For Scaffolding Strategic Readers, Bill Henk Jan 2003

Reading Reminder: A New Tool For Scaffolding Strategic Readers, Bill Henk

College of Education Faculty Research and Publications

No abstract provided.

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Workplace Violence Prevention And Systems Management, Megan Ahn Jan 2003

Workplace Violence Prevention And Systems Management, Megan Ahn

Theses

Violence in the workplace has become a major concern to labor, business, and government. In the past ten years, between 600 and 1000 work related deaths have been attributed to homicide. The repercussions of non-fatal aggression and violence in the workplace are not yet clear. What is clear is that all organizations are at some degree of risk and that regulatory and legal requirements dictate that preventive action be taken to protect employees, other stakeholders and the public from workplace violence. This thesis posits that by using a systems management approach along with the techniques of quality management, instances of …

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A Review Of The Endocrine Disrupting Properties Of The Organochlorine Pesticides, And A Critique And Comparison Of The Laws And Regulations Governing Their Usage In The United States And The European Union., Kent Mitchell Jan 2003

A Review Of The Endocrine Disrupting Properties Of The Organochlorine Pesticides, And A Critique And Comparison Of The Laws And Regulations Governing Their Usage In The United States And The European Union., Kent Mitchell

Theses

Introduction to the effects of organochlorine based pesticides on the immune system so as to better understand the importance of governmental restrictions put on their usage

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Animal Kingdom "Re-Creation", Rattapol Chaiyarat Jan 2003

Animal Kingdom "Re-Creation", Rattapol Chaiyarat

Theses

Not provided.

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Mapping Function To Failure Mode During Component Development, Irem Y. Tumer, Robert B. Stone Jan 2003

Mapping Function To Failure Mode During Component Development, Irem Y. Tumer, Robert B. Stone

Mechanical and Aerospace Engineering Faculty Research & Creative Works

When designing aerospace systems, it is essential to provide crucial failure information for failure prevention. Failure modes and effect types of analyses and prior engineering knowledge and experience are commonly used to determine the potential modes of failures a product might encounter during its lifetime. When new products are being considered and designed, this knowledge and information is expanded upon to help designers extrapolate based on their similarity with existing products and the potential design tradeoffs. in this work, we aim to enhance this process by providing design-aid tools which derive similarities between functionality and failure modes. Specifically, this paper …

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Factors That Influenced Enrollment In The Firm Program At Bethel High School, Susan Carroll Jan 2003

Factors That Influenced Enrollment In The Firm Program At Bethel High School, Susan Carroll

OTS Master's Level Projects & Papers

To help answer this problem the following goals were developed: 1. Determine the reasons students enrolled in The Firm 2. Determine who influences students' decisions to enroll in The Firm; 3. Recommend future recruitment strategies for The Firm

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The Relationship Between Afloat Training Group Norfolk Levels Of Effectiveness To Formal Assessment/Inspections As A Predictor Of Atlantic Fleet Shipboard Engineering Readiness, Juan D. Marpuri Jr. Jan 2003

The Relationship Between Afloat Training Group Norfolk Levels Of Effectiveness To Formal Assessment/Inspections As A Predictor Of Atlantic Fleet Shipboard Engineering Readiness, Juan D. Marpuri Jr.

OTS Master's Level Projects & Papers

This research will determine if the changes made as a result of IDTC initiatives have contributed to the levels of training effectiveness and ultimately the afloat commands ability to demonstrate engineering readiness.

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Aircraft Landing Gear Simulation And Control, Sanoopkumar Ambalaparambil Jan 2003

Aircraft Landing Gear Simulation And Control, Sanoopkumar Ambalaparambil

Theses

The focus of this work is the development of a Multi-degree Of Freedom (MOF) model for simulation and control of the landing performances of the SAE Heavy Lift Airplane model built by the Aerodynamics design team of RIT. From dynamic considerations, the landing gear performance has two areas of interest: a) behavior during touchdown impact, and b) response to excitation induced by track roughness during taxi, take-off and later part of the landing runs. As the problem at hand is highly nonlinear and complex, initially a simplified 1-dof model of the same aircraft is derived and analyzed using Lagrange's equations …

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Adaptive-Critic-Based Optimal Neurocontrol For Synchronous Generators In A Power System Using Mlp/Rbf Neural Networks, Jung-Wook Park, Ganesh K. Venayagamoorthy, Ronald G. Harley Jan 2003

Adaptive-Critic-Based Optimal Neurocontrol For Synchronous Generators In A Power System Using Mlp/Rbf Neural Networks, Jung-Wook Park, Ganesh K. Venayagamoorthy, Ronald G. Harley

Electrical and Computer Engineering Faculty Research & Creative Works

This paper presents a novel optimal neurocontroller that replaces the conventional controller (CONVC), which consists of the automatic voltage regulator and turbine governor, to control a synchronous generator in a power system using a multilayer perceptron neural network (MLPN) and a radial basis function neural network (RBFN). The heuristic dynamic programming (HDP) based on the adaptive critic design technique is used for the design of the neurocontroller. The performance of the MLPN-based HDP neurocontroller (MHDPC) is compared with the RBFN-based HDP neurocontroller (RHDPC) for small as well as large disturbances to a power system, and they are in turn compared …

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An Extended Kalman Filter (Ekf) Approach On Fuzzy System Optimization Problem, Nian Zhang, Donald C. Wunsch Jan 2003

An Extended Kalman Filter (Ekf) Approach On Fuzzy System Optimization Problem, Nian Zhang, Donald C. Wunsch

Electrical and Computer Engineering Faculty Research & Creative Works

Optimizing the membership functions of a fuzzy system can be viewed as a system identification problem for a nonlinear dynamic system. Basically, we can view the optimization of fuzzy membership functions as a weighted least-squares minimization problem, where the error vector is the difference between the fuzzy system outputs and the target values for those outputs. The extended Kalman filter algorithm is a good choice to solve this system identification problem, not only because it is a derivative-based algorithm that is suitable to solve the weighted least-squares minimization problem, but also because of its appealing predictor-corrector feature for nonlinear system …

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Monte Carlo Analysis Of Gan-Based Gunn Oscillators For Microwave Power Generation, R. P. Joshi, V. Sridhara, P. Shah, R. D. Del Rosario Jan 2003

Monte Carlo Analysis Of Gan-Based Gunn Oscillators For Microwave Power Generation, R. P. Joshi, V. Sridhara, P. Shah, R. D. Del Rosario

Electrical & Computer Engineering Faculty Publications

Monte Carlo studies of transferred electron oscillators based on bulk wurtzite GaN are presented. Two structures have been examined: (i) devices with the conventional single notch structure, and (ii) repetitive structures with serial segments to fashion a "multiple domain" device. Wurtzite material has been chosen because of the higher drift velocity and because analytical expressions for the band structure have recently become available. Performance parameters of interest such as the operating frequency, output power, and conversion efficiency are calculated. Variations due to changes in temperature, biasing voltage, and device length are also included. It is shown that multidomain Gunn diodes …

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The S-Locus And Unilateral Incompatibility, C. Nathan Hancock, Katsuhiko Kondo, Brian Beecher, Bruce Mcclure Jan 2003

The S-Locus And Unilateral Incompatibility, C. Nathan Hancock, Katsuhiko Kondo, Brian Beecher, Bruce Mcclure

Department of Agronomy and Horticulture: Faculty Publications

Plants have many ways to regulate the type of pollen that arrives on the stigma surface. Once there, further control mechanisms regulate compatibility. The latter controls are largely based on biochemical interactions that support compatible pollination and prevent incompatible matings. S-RNase-based selfincompatibility (SI) systems are the most phylogenetically widespread mechanisms for controlling pollination. Studies of Nicotiana establish a firm link between SI and unilateral interspecific incompatibility. Although implicated in both inter- and intraspecific compatibility, S-RNase operates through at least three distinct genetic mechanisms that differ in their dependence on non-S-RNase factors. Identification and characterization of these non-S-RNase factors is currently …

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Comparison And Hybridization Of Two Approaches For Maize Simulation, Haishun Yang, Kenneth G. Cassman, Achim R. Dobermann, Daniel T. Walters, John L.. Lindquist, Timothy J. Arkebauer Jan 2003

Comparison And Hybridization Of Two Approaches For Maize Simulation, Haishun Yang, Kenneth G. Cassman, Achim R. Dobermann, Daniel T. Walters, John L.. Lindquist, Timothy J. Arkebauer

Department of Agronomy and Horticulture: Faculty Publications

Two approaches dominate simulation modeling of maize growth: (1) a generic approach, represented by the family of crop models developed by Dutch scientists at the Wageningen University, e.g. SUCROS (Spitters et al, 1989), WOFOST (Diepen et al, 1989) and INTERCOM (Kropff and van Laar, 1993), and (2) a maize-specific approach, represented by CERES-Maize (Jones and Kiniry, 1986) and its derivatives such as the maize module in DSSAT, and the MSB model developed by Muchow et al. (Muchow et al, 1990). These two approaches differ in three aspects. First, maize development in generic models is driven primarily by availability of …

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Training Programs Used By Small Businesses On The Peninsula Of Hampton Roads, Virginia, Deborah Y. Yehlen Jan 2003

Training Programs Used By Small Businesses On The Peninsula Of Hampton Roads, Virginia, Deborah Y. Yehlen

OTS Master's Level Projects & Papers

In order to determine answers to this problem, the following research questions were established: 1. What type of training was used? 2. How does the company make decisions on topics for training? 3. What were topics of recent training? 4. Did employees have any input of their needs for training? If so, how was that accomplished or expressed? 5. Who was responsible for coordinating the training programs? 6. Who delivered the presentations? 7. What were the projections for future needs of training in terms of cost, productivity and manpower?

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The Attitudes Of Core Subject Teachers Toward Making Technology Education A Required Subject, Michael C. Hamby Jan 2003

The Attitudes Of Core Subject Teachers Toward Making Technology Education A Required Subject, Michael C. Hamby

OTS Master's Level Projects & Papers

The goals of this study were to: 1. Ascertain the definition and scope of Technology Education from the perspective of core subject teachers; 2. Gather core subject teachers' opinions concerning the ability of Technology Education to reinforce learning in their content areas; 3. Determine if Technology Education should be a core or required subject.

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The Effectiveness Of Internet Support To Increase Student's Grades In An Introductory Human Anatomy And Physiology Laboratory, Shawngela F. Pierce Jan 2003

The Effectiveness Of Internet Support To Increase Student's Grades In An Introductory Human Anatomy And Physiology Laboratory, Shawngela F. Pierce

OTS Master's Level Projects & Papers

The following hypothesis was used in this study: 1. The use of the internet will increase the grades of students in an introductory human anatomy and physiology laboratory course.

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