Digital Commons Network^™

Maple Tools For Hydrodynamic Interaction Problems, Christopher Pratibha

Digitized Theses

Several calculations of interactions between particles suspended in fluid are first described. In order to complete these calculations efficiently, several facilities that the present version of Maple does not provide are identified. These include the efficient computation of series solutions of ordinary differential equations, the management of large expressions and the convenient solution of polynomial equations in terms of a set of algebraic extensions dependent over the rationals. These facilities are developed and the calculations carried through to completion. A feature of the computations is the solution of ordinary differential equations to high accuracy by series methods. The mathematical and …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Summary, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

This document analyzes (at a programmatic level) the potential environmental consequences over the next 40 years of alternatives related to the transportation, receipt, processing, and storage of spent nuclear fuel under the responsibility of the U.S. Department of Energy. It also analyzes the site-specific consequences of the Idaho National Engineering Laboratory sitewide actions anticipated over the next 10 years for waste and spent nuclear fuel management and environmental restoration. For programmatic spent nuclear fuel management, this document analyzes alternatives of no action, decentralization, regionalization, centralization and the use of the plans that existed in 1992 and 1993 for the managment …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 1, Appendix E, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

The U.S. Department of Energy (DOE) is performing a DOE-wide programmatic evaluation of spent nuclear fuel (SNF) management alternatives in order to determine the appropriate means of managing existing and projected quantities of SNF from now until the year 2035. At the same time, the DOE is performing a site-specific assessment of the Idaho National Engineering Laboratory (INEL) in order to determine how to manage environmental restoration, waste management, and SNF at the INEL. Sites currently involved with the management of major fractions of DOE SNF (i.e., the Hanford Site, Savannah River Site, and INEL), alternative sites being analyzed for …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 3, Part B, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

DOE acknowledges its responsibility to safely manage spent nuclear fuel (SNF). The Secretary of Energy has publicly affirmed that current DOE policy and practice emphasize safety and environmental considerations above other program goals. DOE is formally committed to protecting the safety and health of its workers, the public, and the environment. Furthermore, DOE intends to design, construct and operate facilities in a safe manner, relying on lessons learned from the last 40 years of SNF management. DOE is working to rectify and eliminate any adverse environmental impacts from past programs.

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 1, Appendix F, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

This appendix addresses the interim storage of spent nuclear fuel (SNF) at two U.S. Department of Energy sites, the Nevada Test Site (NTS) and the Oak Ridge Reservation (ORR). These sites are being considered to provide a reasonable range of alternative settings at which future SNF management activities could be conducted. These locations are not currently involved in management of large quantities of SNF; NTS has none, and ORR has only small quantities. But NTS and ORR do offer experience and infrastructure for the handling, processing and storage of radioactive materials, and they do exemplify a broad spectrum of environmental …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 3, Part A, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

This document analyzes at a programmatic level the potential environmental consequences over the next 40 years of alternatives related to the transportation, receipt, processing, and storage of spent nuclear fuel under the responsibility of the U.S. Department of Energy. It also analyzes the site-specific consequences of the Idaho National Engineering Laboratory sitewide actions anticipated over the next 10 years for waste and spent nuclear fuel management and environmental restoration. For programmatic spent nuclear fuel management, this document analyzes alternatives of no action, decentralization, regionalization, centralization and the use of the plans that existed in 1992/1993 for the management of these …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 1, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

The U.S. Department of Energy (DOE) is evaluating its options for two separate but related sets of decisions pertinent to the mangement of the spent nuclear fuel (SNF) for which the DOE is responsible. As a result, this Environmental Impact Statemt (EIS) is divided into two parts. Volume 1 involves programmatic (DOE-wide) approaches to the management of DOE's SNF. Volume 2 discusses site-specific approaches for environmental restoration and waste management activities at the Idaho National Engineering Laboratory, including SNF management. This EIS has been prepared in accordance with the National Environmental Policy Act and its applicable implementing regulations (40 CFR …

Department Of Energy Programmatic Spent Nuclear Fuel Management And Idaho National Engineering Laboratory Environmental Restoration And Waste Management Programs Final Environmental Impact Statement, Volume 2, Part A, United States Department Of Energy

All U.S. Government Documents (Utah Regional Depository)

This document analyzes at a programmatic level the potential environmental consequences over the next 40 years of alternatives related to the transportation, receipt, processing, and storage of spent nuclear fuel under the responsibility of the U.S. Department of Energy. It also analyzes the site-specific consequences of the Idaho National Engineering Laboratory sitewide actions anticipated over the next 10 years for waste and spent nuclear fuel management and environmental restoration. For programmatic spent nuclear fuel management, this document analyzes alternatives of no action, decentralization, regionalization, centralization and the use of the plans that existed in 1992/1993 for the management of these …

Radiatively Active Trace Gas Emissions From Waste Management Systems, Peter Matthew Czepiel

Doctoral Dissertations

Current waste management practices present significant potential for emissions of radiatively active trace gases to the atmosphere. This dissertation describes the quantitative assessment of nitrous oxide (N$\sb2$O) emissions from liquid waste and residuals treatment, emissions of methane (CH$\sb4$) from landfills, and the effects of microbial oxidation on landfill CH$\sb4$ emissions.

N$\sb2$O emissions were measured from liquid treatment process at a wastewater treatment plant where the highest emissions occurred during secondary aeration. Emission factors derived from the measurements included 3.2 g N$\sb2$O person$\sp{-1}$ year$\sp{-1}$ and $1.6\times10\sp{-6}$ g N$\sb2$O (liter wastewater$\sp{-1}$). The potential for N$\sb2$O emissions from the composting of the residual …

Remediation Of Contaminated Soils Using A Plant Based Surfactant., Raghava Rao Kommalapati

LSU Historical Dissertations and Theses

A plant based surfactant extracted from fruit pericarps of Sapindus mukurossi (Ritha) is employed for the first time to investigate remediation of contaminated soils. A method for preparing natural surfactant solutions was developed and the solutions were characterized followed by generation and characterization of colloidal gas aphron (CGA) suspensions produced with these solutions. The variation of hexachlorobenzene (HCB) solubility with natural surfactant solutions was estimated and desorption of HCB from soils was investigated with batch and on-dimensional column experiments. Bioenhancement of soil microorganisms in natural surfactant solutions was studied under both aerobic and anaerobic conditions. The empirical formula for natural …

Study Of Two Instrumental Variable Methods For Closed-Loop Multivariable System Identification., Jeannette Santos-Cordero

LSU Historical Dissertations and Theses

New control strategies are based on the model of the process and it is thus necessary to identify the systems to be controlled. It is also often necessary to identify them during closed-loop operation in order to maintain efficient operation and product quality. Some results of multivariable closed-loop identification carried out on a simulated 2 x 2 linear time-invariant system, using two new versions of instrumental variable methods called IV4D and IV4UP as the identification methods, are presented. In each case pseudorandom binary signals (PRBS), or dithers, are applied to the outputs of the feedback controllers. Algorithms IV4D and IV4UP …

Development Of An Optimal Systems Criteria In The Performance Evaluation Of A Crawfish Sorting Machine., Rommel Gaac Tangonan

LSU Historical Dissertations and Theses

This study aimed to: (1) establish a set of optimally configured guidelines for performance testing of crawfish sorting machines; (2) examine biophysical characteristics of crawfish and machine-related design parameters; and, (3) write computer programs covering the essential aspects of the crawfish sorting process. Three crawfish sorting machines were tested in the Spring of 1994 and 1995: (1) cylindrical roller sorter machine, (2) diverging vane belt sorter machine, and (3) grid shaker sorter machine. Both the cylindrical roller sorter and the diverging vane belt sorter separated crawfish into four groups: peeler, medium, large and jumbo; the grid shaker sorter, however, separated …

The Effects Of Shear Stress On The Crystallization Kinetics Of Syndiotactic Polystyrene., Douglas Henry Krzystowczyk

LSU Historical Dissertations and Theses

Industrial polymer processes involve the application of heat and stress, often resulting in deformations at high shear rates and molecular orientation. This affects both the crystallization rates and the melting temperature of semi-crystalline polymers. Knowledge of the variance of these properties are vital commercially due to their effect on processing techniques, production rates and mechanical properties. An experimental apparatus was designed and constructed that allowed the study of the effects of shear on syndiotactic polystyrene melt samples. This apparatus consisted of a parallel plate rheometer that used changes in shear stress, as well as infrared detection equipment that utilized changes …

A Two Dimensional Vertically Integrated Moving Boundary Hydrodynamic Model In Curvilinear Coordinates., Vibhas Aravamuthan

LSU Historical Dissertations and Theses

A two dimensional, vertically averaged, hydrodynamic mathematical model on an adaptive boundary fitted grid is developed. This model addresses numerous drawbacks in the traditional finite difference models and incorporates such features as moving boundaries due to tidal incursion, and the ability to resolve irregular coastline geometries. A semi-implicit finite difference scheme is developed in order to overcome time step restrictions due to the gravity wave stability criterion. An eulerian-lagrangian formulation is used to solve the hydrodynamic equations on unsteady grid systems. The model is applied to study circulation features in Lake Pontchartrain (a medium sized physical system) and to the …

Robust Adaptive Control In H(Infinity)., Gisoon Kim

LSU Historical Dissertations and Theses

This dissertation addresses the problem of unifying identification and control in the paradigm of ${\cal H}\sb\infty$ to achieve robust adaptive control. To achieve robust adaptive control, we employ the same approach used for identification in ${\cal H}\sb\infty$ and robust control in ${\cal H}\sb\infty.$ In the modeling part, we aim not only to identify the nominal plant, but also to quantify the modeling error in ${\cal H}\sb\infty$ norm. The linear algorithm based on least-squares is used, and the upper bounds for the corresponding modeling error are derived. In the control part, we aim to achieve the performance specification in frequency domain …

Combinatorial Design And Analysis Of Optimal Multiple Bus Systems For Parallel Algorithms., Priyalal D. Kulasinghe

LSU Historical Dissertations and Theses

This dissertation develops a formal and systematic methodology for designing optimal, synchronous multiple bus systems (MBSs) realizing given (classes of) parallel algorithms. Our approach utilizes graph and group theoretic concepts to develop the necessary model and procedural tools. By partitioning the vertex set of the graphical representation CFG of the algorithm, we extract a set of interconnection functions that represents the interprocessor communication requirement of the algorithm. We prove that the optimal partitioning problem is NP-Hard. However, we show how to obtain polynomial time solutions by exploiting certain regularities present in many well-behaved parallel algorithms. The extracted set of interconnection …

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 10, Number 10, December 1994, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A fourteen page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 10, Number 9, November 1994, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A fourteen page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 10, Number 8, October 1994, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

An eight page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 10, Number 7, September 1994, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

An eight page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 10, Number 6, June 1994, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A ten page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 10, Number 5, May 1994, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A twelve page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 10, Number 4, April 1994, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A ten page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Bs News

Building Services Engineering

No abstract provided.

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 10, Number 3, March 1994, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A twelve page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Hypergroup Graphs And Subfactors., A. K. Vijayarajan Dr.

Doctoral Theses

The main theme of this t hesis is hypergroups. In this thesis the the- ory of hypergroups is applied to study the relation between certain graphs and subfactors of II, factors in the context of principal graphs associated with the inclusions of II, factors. More general classes of hypergroups are iutroduced, new examples of hypergroups associated to certain graphs are coustructed and classification of small order hypergroups is discussed.The text of the thesis is arranged in four chapters. The first chapter is on preliminaries of the theory of hypergroups, the second on the appli- cation of the theory of hyjrrgroups …

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 10, Number 2, February 1994, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A twelve page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Nonlinear Analysis Of Piles With Application Of Offshore Tower Response, Nagger Mohamed El

Digitized Theses

Three main areas are addressed in this study: (1) Statnamic test analysis. In recent years a new type of pile test employing a short-duration load was developed that became known as pile Statnamic test. A method of dynamic analysis has been formulated for this test. The aim of the analysis is twofold: to calculate the pile head displacements in such a way that a satisfactory match with the data measured during the test is obtained; and using the model parameters established from this comparison to predict the pile capacity. The model is one-dimensional and accounts for slip and energy dissipation …

Dynamic Analysis Of Turbine-Generator-Foundation Systems, Weiming Liu

Digitized Theses

In this dissertation a comprehensive investigation on the dynamic characteristics of turbine-generator-foundation systems is performed. All the major components of the system, including turbine-generator casing, shaft, rotors, journal bearings, deck, piers, foundation mat, piles, and soil medium, have been included. Full interaction between the turbine-generator set, the foundation superstructure, and the soil medium, is considered.;A hybrid method is proposed to establish the mathematical model for the turbine-generator-foundation system, which includes finite element discretization of turbine-generator and foundation superstructure, combined with a soil stiffness matrix derived from the dynamic Green functions of the soil. The soil is modeled as a transversely …

Ground Water Flow Model For Fractured Media, Ernesto Da Silva Pitombeira

Doctoral Dissertations

In fractured rock systems, ground water flow is not as simple and as methodical as in a porous medium. To create a numerical model of such a flow system, a four-part algorithm was written, which included MATLAB$\sp\circler$ as a fundamental component. It was intended that the model output define the zone of influence of pumping stresses. The four model parts are, sequentially: generation of the interconnected fracture geometry; generation of the linear finite element grid; the hydraulic calculations and the influence zone delineation. MATLAB$\sp\circler$ is used to stochastically generate the fracture geometry from empirical estimates of the probability distributions of: …