Digital Commons Network^™

Using Dynamic Optimization For Control Of Real Rate Cpu Resource Management Applications, Varin Vahia, Ashvin Goel, David Steere, Jonathan Walpole, Molly H. Shor

Computer Science Faculty Publications and Presentations

In this paper we design a proportional-period optimal controller for allocating CPU to real rate multimedia applications on a general-purpose computer system. We model this computer system problem in to state space form. We design a controller based on dynamic optimization LQR tracking techniques to minimize short term and long term time deviation from the current time stamp and also CPU usage. Preliminary results on an experimental set up are encouraging.

Measurement Of Conductivity And Charge Storage In Insulators Related To Spacecraft Charging, A. R. Frederickson, John R. Dennison

All Physics Faculty Publications

Improved experimental methods are discussed for laboratory measurement of conductivity and electric field in insulating spacecraft material intended for space radiation and plasma environments. These measurement techniques investigate the following features: 1) measurements of conductivity are up to four orders of magnitude smaller than those determined by existing standard methods. 2) Conductivity is altered as radiation accumulates and trapping states fill with electrons. 3) With intense kiloelectronvolt electron irradiation, electrons are continually emitted for hours from the irradiated surface after the irradiation ceases. 4) Charging induced by electron irradiation is strongly modified by the electron-hole pairs that the irradiation generates …

A Sound Theology: The Vital Position Of Sound And Music To Hildegard Of Bingen's Theology And Public Identity, Geraldine E. Henderson

Glenn Korff School of Music: Dissertations, Theses, Student Creative Work, and Performances

The twelfth-century nun Hildegard of Bingen heard God's voice as a child and developed a sensitivity to all sounds that led her to an increasing conviction of the power of sound. Later this sensitivity to sound issued in a body of religious writing about sound that this dissertation views as systematic, as an implicit "Theology of Sound" that can be legitimately extrapolated from the work. To trace how this theology emerged, Chapter One of this dissertation will give a brief biography and an overview of the chronology and context of Hildegard's work. In preparing for a construction of the theology, …

The Southeastern Librarian V. 51, No. 4 (Winter 2003) Complete Issue

The Southeastern Librarian

Complete issue of The Southeastern Librarian, volume 51, no. 4 (Winter 2003).

Volume 23, Number 4, December 2003 Olac Newsletter, Jain Fletcher, Barbara Vaughan, Vicki Toy-Smith, Nancy B. Olson

OLAC Newsletters

Digitized December 2003 issue of the OLAC Newsletter.

Acknowledgements, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

An Exploration Of The Influence Of Demographic Factors On Individual And Aggregate Student Achievement Measurements In The Kentucky Accountability System., Beverly Lee Derrington Moore 1938-

Electronic Theses and Dissertations

This study investigates the progress of standards-based accountability in eliminating the effects of student background and school composition factors on student achievement and school performance in a large, urban district in Kentucky. The factors included gender, socioeconomic status (SES), ethnicity, mobility, family structure, giftedness, and disability. The school composition variables were the percentages of those factors in the school populations. Each grade and level--elementary, middle, and high school--was analyzed by multiple regression. At the student level, SES, giftedness, and disability predicted 15 to 36% of the variance in scores. SES, family structure, and mobility rate accounted for 56 to 91% …

Factors That Predict Student Performance In Dual Credit Courses In Kentucky Community And Technical Colleges., Nicholas L. Brake

Electronic Theses and Dissertations

This research addresses the problem of productivity in the P-16 system of education, emphasizing the repetition of the senior year of high school with the first year of postsecondary education. This study analyzes this integration through dual credit courses in the context of both P-12 and higher education reform in Kentucky. An analysis of these factors is critical in light of the deregulation of dual credit in Kentucky since 2000 and the increased enrollment of high school students in college courses both nationally and in Kentucky. Dual credit courses in Kentucky community and technical colleges are evaluated based on the …

Age, Growth And The Annual Cycles Of Lipogenesis And Reproduction Of Acanthurus Bahianus In Southeastern Florida, Stacy M. Wolfe

HCNSO Student Theses and Dissertations

The ocean surgeon, Acanthurus bahianus, is a coral reef fish inhabiting the tropical and subtropical waters of the western Atlantic, including southeastern Florida. This study was a 23-month analysis of the reproductive cycle correlated with the annual build up and depletion of fat reserves in the fish. In addition, an age and growth analysis of this species was conducted. A total of 507 fish were analyzed for length, weight, gonad weight and fat body weight. 478 were aged by microscopic examination of the transverse section of the sagittae otolith. The von Bertalannfy growth equation was used to determine length at …

Pyro: A Python-Based Versatile Programming Environment For Teaching Robotics, D. Blank, D. Kumar, Lisa A. Meeden, H. Yanco

Computer Science Faculty Works

In this article we describe a programming framework called Pyro, which provides a set of abstractions that allows students to write platform-independent robot programs. This project is unique because of its focus on the pedagogical implications of teaching mobile robotics via a top-down approach. We describe the background of the project, its novel abstractions, its library of objects, and the many learning modules that have been created from which curricula for different types of courses can be drawn. Finally, we explore Pyro from the students' perspective in a case study.

Notes From The Director, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

Mcnair Scholars Program, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

Message From The Provost, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

Full Issue, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

The Prairie Naturalist Volume 35, No.4 December 2003

The Prairie Naturalist

HOME RANGE AND MOVEMENTS OF EASTERN AND RIO GRANDE WILD TURKEY FEMALES IN NORTHEASTERN

SOUTH DAKOTA ▪ C. P. Lehman, L. D. Flake, and A. P. Leif

THE BAT FAUNA OF SOUTHEASTERN SOUTH DAKOTA . J. E. Lane, C. L. Buck, and R. M. Brigham

FIRST REPORT OF THE NORTH DAKOTA RARE BIRD COMMITTEE ▪ D. Svingen and R. E. Martin

BREEDING CHRONOLOGY OF DABBLING DUCKS IN MINNEDOSA, MANITOBA ▪ A. M. Wells and H. H. Prince

A LIVE COLLECTION OF A PISTOLGRIP FROM NEBRASKA ▪ S. C. Schainost

NEW NESTING DATES FOR SOME BREEDING BIRDS IN NORTH DAKOTA ▪ …

Electrostatics Of Nanowire Transistors, Jing Guo, Jing Wang, E. Polizzi, Supriyo Datta, Mark S. Lundstrom

Other Nanotechnology Publications

The electrostatics of nanowire transistors are studied by solving the Poisson equation self-consistently with the equilibrium carrier statistics of the nanowire. For a one-dimensional, intrinsic nanowire channel, charge transfer from the metal contacts is important. We examine how the charge transfer depends on the insulator and the metal/semiconductor Schottky barrier height. We also show that charge density on the nanowire is a sensitive function of the contact geometry. For a nanowire transistor with large gate underlaps, charge transferred from bulk electrodes can effectively "dope" the intrinsic, ungated region and allow the transistor to operate. Reducing the gate oxide thickness and …

Enabling Computer Decisions Based On Eeg Input, Benjamin J. Culpepper, Robert M. Keller

All HMC Faculty Publications and Research

Multilayer neural networks were successfully trained to classify segments of 12-channel electroencephalogram (EEG) data into one of five classes corresponding to five cognitive tasks performed by a subject. Independent component analysis (ICA) was used to segregate obvious artifact EEG components from other sources, and a frequency-band representation was used to represent the sources computed by ICA. Examples of results include an 85% accuracy rate on differentiation between two tasks, using a segment of EEG only 0.05 s long and a 95% accuracy rate using a 0.5-s-long segment.

Measurement Of Conductivity And Charge Storage In Insulators Related To Spacecraft Charging, A Robb Frederickson, Jr Dennison

Journal Articles

Improved experimental methods are discussed for laboratory measurement of conductivity and electric field in insulating spacecraft material intended for space radiation and plasma environments. These measurement techniques investigate the following features: 1) Measurements of conductivity are up to four orders of magnitude smaller than those determined by existing standard methods. 2) Conductivity is altered as radiation accumulates and trapping states fill with electrons. 3) With intense keV electron irradiation, electrons are continually emitted for hours from the irradiated surface after the irradiation ceases. 4) Charging induced by electron irradiation is strongly modified by the electron-hole pairs that the irradiation generates …

A Review Of Approaches For Assessing Multimodal Quality Of Service, Rhonda G. Phillips, Martin Guttenplan

Journal of Public Transportation

Prompted by a need to respond to increasing traffic congestion, national, state, and local organizations have called for increased multimodal planning. This changing focus has added more complexity, data needs, and desire for supportive analytical tools to the transportation planning process overall. Multimodal performance methodologies are needed that can be readily applied. This article provides an analysis of existing methodologies to assess quality of service and related concerns for pedestrian, bicycle, and transit modes. It explores the methodologies in the context of supply-side considerations and provides considerations for their use. By placing transit-level service in line with pedestrian and bicycle, …

Global Solutions To The Lake Equations With Isolated Vortex Regions, Chaocheng Huang

Mathematics and Statistics Faculty Publications

The vorticity formulation for the lake equations in R² is studied.

Comparisons Of Electron Fluxes Measured In The Crustal Fields At Mars By The Mgs Magnetometer/Electron Reflectometer Instrument With A B Field-Dependent Transport Code, Michael W. Liemohn, David L. Mitchell, Andrew F. Nagy, Jane L. Fox, Tamara W. Reimer, Yingjuan J. Ma

Physics Faculty Publications

We compare Mars Global Surveyor (MGS) magnetometer/electron reflectometer data with results from a B field–dependent kinetic transport code for ‘‘superthermal’’ electrons. The photoelectrons created on crustal field loops, when they are on the dayside, allow for the exploration of the magnetic topology and the upper atmospheric density structure. A case study of a typical orbit of the MGS satellite through the strong crustal field region in the southern hemisphere of Mars is examined. The results indicate that the low solar wind dynamic pressure during the selected orbit allowed for the expansion of the crustal field line to relatively high altitudes. …

Wsu Research News, Winter 2003, Office Of Research And Sponsored Programs, Wright State University

WSU Research News

A twelve page newsletter of the WSU Research News. The WSU Research News was published monthly beginning in June of 1968 and issued by the Office of Research Development. This newsletter was created to provide information to the WSU faculty about the availability of outside funds for research and educational programs, new developments that may affect availability of funds, and general information on research and educational activities at Wright State University.

Fabrication And Characterization Of N-Zno/P-Algan Heterojunction Light-Emitting Diodes On 6h-Sic Substrates, Ya I. Alivov, E. V. Kalinina, A. E. Cherenkov, David C. Look, B. M. Ataev, A. K. Omaev, M. V. Chukichev, D. M. Bagnall

Physics Faculty Publications

We report on the fabrication of n-ZnO/p-AlGaN heterojunction light-emitting diodes on 6H-SiC substrates. Hydride vapor phase epitaxy was used to grow p-type AlGaN, while chemical vapor deposition was used to produce the n-type ZnO layers. Diode-like, rectifying I-V characteristics, with threshold voltage ~3.2 V and low reverse leakage current ~10^-7 A, are observed at room temperature. Intense ultraviolet emission with a peak wavelength near 389 nm is observed when the diode is forward biased; this emission is found to be stable at temperatures up to 500 K and shown to originate from recombination within the ZnO.

Sector Differences In Student Learning: Differences In Achievement Gains Across School Years And During The Summer, William Carbonaro

Journal of Catholic Education

Public and private schools have been the focus of considerable research, comparing student achievement, attendance, dropout rates, graduation rates, disciplinary incidents, and a variety of educational and prosocial outcomes across sectors. Comparative studies of student achievement have tended to concentrate on the high school years and without any effort to measure gains or losses during specific years. This study concludes that sector differences in learning vary across grade levels and that summer learning rates vary by school sector. More study of sector differences in learning is recommended, especially longitudinal studies that examine seasonal gains across school sector over the entire …

A Median Voter Theorem For Postelection Politics, Dhammika Dharmapala, Etienne Lehmann

Economics Working Papers

We analyze a model of 'postelection politics', in which (unlike in the more common Downsian models of 'preelection politics') politicians cannot make binding commitments prior to elections. The game begins with an incumbent politician in office, and voters adopt reelection strategies that are contingent on the policies implemented by the incumbent. We generalize previous models of this type by introducing heterogeneity in voters' ideological preferences, and analyze how voters' reelection strategies constrain the policies chosen by a rent-maximizing incumbent. We first show that virtually any policy (and any feasible level of rent for the incumbent) can be sustained in a …

Biological Permanent Magnets, Richard B. Frankel

Physics

Magnetotactic bacteria orient and migrate along magnetic field lines. Each cell is essentially a self-propelled magnetic dipole. The magnetic properties of these bacteria have been determined by a variety of techniques, including pulsed hysteresis measurements on single cells.

The Collegian (2003-12-01), Sonia Mejia

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 56, No. 14

Differential Recursion Relations For Laguerre Functions On Hermitian Matrices, Mark Davidson, Gestur Ólafsson

Faculty Publications

In our previous papers we studied Laguerre functions and polynomials on symmetric cones Ω= H/L. The Laguerre functions ℓnv, n ∈, form an orthogonal basis in L2(Ω, dμv)L and are related via the Laplace transform to an orthogonal set in the representation space of a highest weight representations (πv, Hv) of the automorphism group G corresponding to a tube domain T(Ω). In this article, we consider the case where Ω is the space of positive definite Hermitian matrices and G = SU(n, n). We describe the Lie algebraic realization of πv acting in L 2(Ω, dμv) and use that to …

Regularization Of Integral Equations In Spaces Of Distributions, Ricardo Estrada

Faculty Publications

In this article the notion of multiplicative regularizator, a smooth function that by multiplication allows the extension of operators in spaces of distributions, is introduced, and several of the properties are obtained. Applications to Hilbert transforms, Carleman operators, fractional integration operators and generalized Abel operators are given. © 2003 Rocky Mountain Mathematics Consortium.

Design-Dependent Loads In Topology Optimization, Blaise Bourdin, Antonin Chambolle

Faculty Publications

We present, analyze, and implement a new method for the design of the stiffest structure subject to a pressure load or a given field of internal forces. Our structure is represented as a subset S of a reference domain, and the complement of S is made of two other "phases", the "vold" and a fictitious "liquid" that exerts a pressure force on its interface with the solid structure. The problem we consider is to minimize the compliance of the structure S, which is the total work of the pressure and internal forces at the equilibrium displacement. In order to prevent …