Physical Sciences and Mathematics Commons^™

Advising A Precollege Curriculum Project, Stephen B. Maurer , '67, W. Mccallum

Mathematics & Statistics Faculty Works

No abstract provided.

The Phylogenetic Relationships And Biogeography Of True Porpoises (Mammalia: Phocoenidae) Based On Morphological Data, Liliana Fajardo-Mellor, Annalisa Berta, Robert L. Brownell Jr., Claudia Boy, R. Natalie Goodall

United States Department of Commerce: Staff Publications

Prior studies of phylogenetic relationships among phocoenids based on morphology and molecular sequence data conflict and yield unresolved relationships among species. This study evaluates a comprehensive set of cranial, postcranial, and soft anatomical characters to infer interrelationships among extant species and several well-known fossil phocoenids, using two different methods to analyze polymorphic data: polymorphic coding and frequency step matrix. Our phylogenetic results confirmed phocoenid monophyly. The division of Phocoenidae into two subfamilies previously proposed was rejected, as well as the alliance of the two extinct genera Salumiphocaena and Piscolithax with Phocoena dioptrica and Phocoenoides dalli. Extinct phocoenids are basal …

The Microstructure Of Meteoric Ice From Vostok, Antarctica, Rachel Obbard, Ian Baker

Dartmouth Scholarship

The 3623 m long, 5G core collected at Vostok station, Antarctica, contains alternating layers of meteoric ice with two distinctly different microstructures. In this paper, we present the microstructure and impurity content of a number of specimens ranging in depth from 97 to 3416 m, describe in detail the characteristics of the different layers and propose a mechanism for their microstructural development. Digital image analysis, ion chromatography, scanning electron microscopy and energy dispersive X-ray spectroscopy were used to measure texture and the location and type of impurities; electron backscatter diffraction was used to determine crystal orientation. The ice associated with …

The Exact Distribution Of The Multilook Magnitude, Saralees Nadarajah, Samuel Kotz

Department of Statistics: Faculty Publications

Gierull provides a statistical analysis of multilook synthetic aperture radar interferograms. Various expressions for the probability density function, cumulative distribution function, and the moments of associated statistics are derived. It appears, however, that most of these expressions are based on some approximation. In this letter, the corresponding expressions are derived in their exact form, including some elementary representations for certain expressions given by Gierull. A numerical comparison of the exact and approximate expressions is provided.

Positive Solutions Of A Nonlinear N-Th Order Eigenvalue Problem, John R. Graef, Johnny Henderson, Bo Yang

Faculty Articles

For 1/2 < p < 1 fixed, values of lambda > 0 are determined for which there exist positive solutions of the n-th order differential equation u((n)) = lambda g(t)f(u), 0 < t < 1, satisfying the three-point boundary conditions, u((i-1)) (0) = u((n-2)) (P) = u((n-1)) (1) = 0, 1

The problem is converted to a third order differential-integro boundary value problem and then a recent result of Graef and Yang for third order boundary value problems is adapted. An example is included to illustrate the results.

Structures And Relative Stability Of Neutral Gold Clusters: AuN (N=15–19), Satya S. Bulusu, Xiao Cheng Zeng

Xiao Cheng Zeng Publications

We performed a global-minimum search for low-lying neutral clusters (Au_n) in the size range of n=15–19 by means of basin-hopping method coupled with density functional theory calculation. Leading candidates for the lowest-energy clusters are identified, including four for Au₁₅, two for Au₁₆, three for Au₁₇, five for Au₁₈, and one for Au₁₉. For Au₁₅ and Au₁₆ we find that the shell-like flat-cage structures dominate the population of low-lying clusters, while for Au₁₇ and Au₁₈ spherical-like hollow-cage structures dominate the low-lying population. The transition …

One Fish, Two Fish, Red Fish, Blue Fish: The Economic And Environmental Impacts Of Commercial Fishing, Jessica Glenn

Independent Study Project (ISP) Collection

Fish and fisheries play an important role in the Amazon River Basin. Fishing provides jobs to people of both urban and rural communities, and fish are a major source of protein in people’s diets and a major part of the Amazon River ecosystem. In recent years commercial fishing has increased due to greater access to both domestic and international markets, and government incentives which have helped fishermen obtain better equipment and boats. The purpose of this study is to observe the Belém Ver-O-Peso fish market and interview fisherman about different aspects of commercial fishing (what species of fish were caught, …

Ley Y Desorden: La Participación, La Política, Y La Planificación En El Archipiélago De Bocas Del Toro, Sage E. Trombulak

Independent Study Project (ISP) Collection

The Bocas del Toro Archipelago is quickly becoming one of Panama’s most popular destinations, both for tourists pursuing temporary fun-in-the-sun type activities and for wealthy Panamanians, Americans, and Europeans seeking a more permanent location for their vacation homes, luxury resorts, and retirement communities. These dual phenomena have become a subject of escalating concern for the political leadership in Bocas del Toro and for a plethora of local, regional, and international NGOs, as unprecedented levels of development are leading to the degradation of one of Panama’s most beautiful and biologically diverse landscapes, stresses on urban infrastructure, and rapid economic growth that …

The Future Leading Mobility Protocol: Mobile Ipv4 Or Mobile Ipv6?, Victor A. Clincy, Mudiraj Padmaja

Faculty Articles

Mobile computing has become an important area of computer networking and is expected to play a fundamental role in the ubiquitous access of Internet resources in the future. In recent years, we have seen increasing demand from end-users to access network resources from anywhere and at anytime from all kinds of devices. A greater degree of connectivity is almost becoming mandatory in todays business world. In addition, mobility of end-users is placing further requirements on network systems and protocols to provide uninterrupted services. Mobile network protocol such as Mobile IPv4 has emerged as one of the promising solutions capable of …

Multiple Scattering Mechanisms In Simultaneous Projectile-Electron And Target-Electron Ejection In H⁻ + He Collisions, Michael Schulz, T. Ferger, Daniel Fischer, R. Moshammer, J. D. Ullrich

Physics Faculty Research & Creative Works

We studied simultaneous electron ejection from both collision partners in 200-keV H^-+He collisions in a kinematically complete experiment by measuring the fully momentum-analyzed recoil ions and both active electrons in coincidence. The data were analyzed in terms of Dalitz spectra, in which the momentum exchange between three particles is plotted simultaneously in a single spectrum. We found that the energy transfer occurs predominantly between the active electrons, but most of the momentum is exchanged in elastic scattering between the cores of the collision partners.

Dipole Trapped Spheromak In A Prolate Flux Conserver, Michael R. Brown, C. D. Cothran, Jerome Fung , '06, M. Chang, Jason Alexander Horwitz , '07, M. J. Schaffer, J. Leuer, E. V. Belova

Physics & Astronomy Faculty Works

This paper reports the observation and characterization of a spheromak formed in the Swarthmore Spheromak Experiment (SSX, [M. R. Brown, Phys. Plasmas 6, 1717 (1999)]) and trapped in a simple dipole magnetic field. The spheromak is studied in a prolate (tilt unstable) 0.4 m diameter, 0.6 m length copper flux conserver in SSX. This plasma does not tilt, despite the prolate flux conserver. The spheromak is characterized by a suite of magnetic probe arrays for magnetic structure B(r,t), ion Doppler spectroscopy for T-i and flow, and interferometry for n(e). Three-dimensional magnetohydrodynamics simulations of this configuration verify its gross sta-bility. (c) …

Cross Sections Fall 2006, Department Of Physics And Astronomy

Cross Sections

No abstract provided.

Southeastern Cooperative Wildlife Disease Study, Volume 22, October 2006, Number 3

Southeastern Cooperative Wildlife Disease Study: Publications

The final rule on Chronic Wasting Disease (CWD) Herd Certification Program and Interstate Movement of Farmed or Captive Deer, Elk, and Moose was published in the Federal Register by the U.S. Department of Agriculture, Animal Plant and Health Inspection Service (APHIS) on July 21, 2006 (SCWDS BRIEFS, Vol. 22, No. 2). SCWDS researchers recently received research support from the U.S. Centers of Disease Control and Prevention (CDC) for a project entitled “Avian Influenza Viruses in the Environment: What is the Probability of Human Contact and Transmission?” We have had a large number of isolations of bluetongue virus (BTV) and epizootic …

Earth News, V30, Fall 2006, Department Of Earth Science, University Of Northern Iowa.

Earth News

Inside this issue:

--- Earth Science Staff Activities
--- Emeritus Faculty/Staff
--- The New Madrid Fault Field Trip
--- Richard Golz Estate Donates Items to Earth Science Department
--- Fall 2006 Quarry Open House Features Dedication
--- Special Alumni Profile - Aaron Spurr
--- Pre-College Students Invade Latham Hall
--- Earth Science Seminar Series
--- Majors in the Earth Science Department
--- Sigma Gamma Epsilon - Gamma Sigma Chapter
--- Student Internships
--- Student Research Presentations
--- Scholarship and Award Recipients
--- The Charles J. Hearst Scholarship
--- 2006 Earth Science Graduates
--- Gifts to the Department of Earth Science …

Environmental Injustice In Ecuador: Endangered Indigenous Populations And Environmental Degradation, Clover Anneire Muters

WWU Honors College Senior Projects

Nationally and globally there is a widening disparity between the rich and poor which is reflected at every level of society. Environmental injustice is a term to describe the unjust way that natural resources are allocated, and the very real phenomenon of a disproportionate amount of the negative consequences of environmental degradation being placed on those populations that are poor and underrepresented. This paper will address this situation in Ecuador, and specifically, the connection between the environmental degradation of one of the most biologically diverse places in the world, and the destruction of indigenous and repressed populations who have lived …

Certifications Offered By Cost Estimating Organizations, Donald S. Remer, Karen M. Ahle, Kevin J. Alley, John Silny, Karen Hsin

All HMC Faculty Publications and Research

There has been an increasing trend in professional and engineering circles to place greater emphasis on official credentials. These credentials commonly come in the form of certificates – documented recognition by a professional body that an engineer or other professional has the qualifications and technical knowledge to be a practitioner in that field. These certificates are somewhat analogous to merit badges in scouting – the certification is evidence that the holder has a certain minimum level of competence in the subject area. This review will help you decide what certifications are applicable to you and the requirements to obtain a …

Wmi Outdoor News Bulletin * October 2006, Volume 60, No. 10

Wildlife Management Institute Outdoor News Bulletin

Contents:

• Hunting/conservation organizations line up to urge expanded use of Coop Units

• Suspected culprit identified in CWD transmission

• Prairie Grouse Management Plan making progress

• Great Lakes Fish and Wildlife Restoration Act is reauthorized

• Worth reading: The Final Frontiersman

Atomic And Electronic Structure Of Cofeb/Mgo Interface From First Principles, John D. Burton, Sitaram S. Jaswal, Evgeny Y. Tsymbal, O. G. Heinonen

Evgeny Tsymbal Publications

First-principles calculations of the atomic and electronic structure of crystalline CoFeB/MgO/CoFeB magnetic tunnel junctions (MTJs) are performed to understand the effect of B on spin-dependent transport in these junctions. The authors find that it is energetically favorable for B atoms to reside at the crystalline CoFeB/MgO interface rather than remain in the bulk of the crystalline CoFeB electrode. The presence of B at the interfaces is detrimental to tunneling magnetoresistance (TMR) because it significantly suppresses the majority-channel conductance through states of symmetry. Preventing B segregation to the interfaces during annealing should result in an enhanced TMR in CoFeB/MgO/CoFeB MTJs.

Adaptive Critic Neural Network Force Controller For Atomic Force Microscope-Based Nanomanipulation, Qinmin Yang, Jagannathan Sarangapani

Electrical and Computer Engineering Faculty Research & Creative Works

Automating the task of nanomanipulation is extremely important since it is tedious for humans. This paper proposes an atomic force microscope (AFM) based force controller to push nano particles on the substrates. A block phase correlation-based algorithm is embedded into the controller for the compensation of the thermal drift which is considered as the main external uncertainty during nanomanipulation. Then, the interactive forces and dynamics between the tip and the particle, particle and the substrate are modeled and analyzed. Further, an adaptive critic NN controller based on adaptive dynamic programming algorithm is designed and the task of pushing nano particles …

Student Fact Book, Fall 2006, Twenty-Ninth Annual Edition, Wright State University, Office Of Student Information Systems, Wright State University

Wright State University Student Fact Books

The student fact book has general demographic information on all students enrolled at Wright State University for Fall Quarter, 2006.

Ceg 320/520: Computer Organization And Assembly Language Programming, Travis E. Doom

Computer Science & Engineering Syllabi

Terminology and understanding of functional organizations and sequential operation of a digital computer. Program structure, and machine and assembly language topics including addressing, stacks, argument pasing, arithmetic operations, traps, and input/output. Macros, modularization, linkers, and debuggers are used. Three hours lecture, two hours lab. Prerequisite: CS 242, CEG 260.

Ceg 260: Digital Computer Hardware Switching Circuits, Meilin Liu

Computer Science & Engineering Syllabi

We will discuss and cover basic digital, combinational and sequential logic systems. Labs will be used to gain valuable practical experience in implementing elementary circuits and logic designs.

Ceg 255: Introduction To The Design Of Information Technology Systems, Eric Matson

Computer Science & Engineering Syllabi

Information systems consist of modern elements such as database systems, networks, multi-platform distributed computing, web infrastructure and multimedia computing. In this course we will address these areas individually and also where they intersect to gain a basic understanding of how information technology can be used to solve real problems.

We will develop techniques to design, develop and implement distributed business software. Emphasis will be on the following areas:

1. Graphical User Interfaces (GUI) using Java Swing classes
2. Management of data in Relational Database Management Systems (RDBMS) with SQL
3. Integration of distributed systems using object brokering systems such as CORBA

Ceg 220: Introduction To C Programming For Engineers I, Ronald F. Taylor

Computer Science & Engineering Syllabi

This course provides a general introduction to computers as a problem-solving tool using the C programming language. Emphasis is on algorithms and techniques useful to engineers. Topics include data representation, debugging, and program verification. Some programming assignments may involve complex arithmetic and trigonometric and exponential functions. 4 credit hours.

Ceg 210: Pc Networking I, Karen Meyer

Computer Science & Engineering Syllabi

Introduction to PC networking hardware, concepts, and technologies. Focus is on LAN administration, hardware and software configuration. Course Goals

At the end of the quarter the student will be able to:

• design and configure a client server network
• create and manage network objects
• plan and implement directory services and network file systems
• plan and implement network security
• design and write network login scripts
• manage and solve problems related to a client server network

Ceg 760: Advanced Software Computer Engineering, Thomas C. Hartrum

Computer Science & Engineering Syllabi

This course covers advanced topics in software engineering. Aspects of problem specification, design, verification, and evaluation are discussed. We will focus on design methods, including software patterns and software architecture, plus some advanced topics involving formal methods of software specification or evaluation using software metrics. Students will participate in team projects to apply the methods discussed.

Ceg 724: Computer Vision I, Arthur A. Goshtasby

Computer Science & Engineering Syllabi

This course covers basic techniques for low-level and some mid-level vision processes. The techniques include: camera geometry and calibration, image filtering and edge detection, image segmentation, 2-D shape analysis, 2-D texture analysis, model-based recognition and template matching, and video understanding and tracking.

Ceg 720: Computer Architecture I, Soon M. Chung

Computer Science & Engineering Syllabi

Review of sequential computer architecture and study of parallel computers. Topics include memory hierarchy, reduced instruction set computer, pipeline processing, multiprocessing, various parallel computers, interconnection networks, and fault-tolerant computing. 3 hours lecture and 2 hours lab.

Ceg 499/699: Mobile Computing, Yong Pei

Computer Science & Engineering Syllabi

Increasingly, people, computers and microelectronic devices are being linked together to bring to life the communications mantra: anybody, anything, anytime, anywhere. This junior/senior/graduate course provides an in-depth study of networking protocol and system design in the area of wireless networking and mobile computing. It will help engineering and computer science students establish a solid foundation in concepts, architecture, design, and performance evaluation of mobile computing principle, protocols and applications. It will also introduce students to a few hot topics in wireless networking and mobile computing research such as mobile IP, wireless TCP, 802.11, agent techniques, etc. The course material also …

Ceg 433/633: Operating Systems, Prabhaker Mateti

Computer Science & Engineering Syllabi

The management of resources in multi-user computer systems. Emphasis is on problems of file-system design, process scheduling, memory allocation, protection, and tools needed for solutions. Course projects use the CIC++ language and include the design of portions of an operating system. 4 credit hours.