Digital Commons Network^™

Hierarchical Mobility Management For Voip Traffic, Archan Misra, Subir Das, Anthony J. Mcauley

Research Collection School Of Computing and Information Systems

A hierarchical IP-based mobility management mechanism is proposed for VoIP applications. The suggested mechanism uses the DMA (dynamic mobility agent) architecture, based on IDMP (intra-domain mobility management protocol), for managing intra-domain mobility and the dynamic binding mechanism of SIP (session initiation protocol) for managing global mobility. This combination of network and application layer mobility management reduces the global signaling load, provides fast handoff for ongoing conversations, enables efficient global transport and supports IP-layer paging.

Spectroscopy And Orbital Periods Of Four Cataclysmic Variable Stars, John R. Thorstensen, Cynthia J. Taylor

Dartmouth Scholarship

We present spectroscopy and orbital periods P_orb of four relatively little-studied cataclysmic variable stars. The stars and their periods are: AF Cam, P_orb = 0.324(1) d (the daily cycle count is slightly ambiguous); V2069 Cyg (= RX J2123.7+4217), 0.311683(2) d; PG 0935+075, 0.1868(3) d; and KUV 03580+0614, 0.1495(6) d. V2069 Cyg and KUV 03580+0614 both show He iiλ4686 emission comparable in strength to Hβ. V2069 Cyg appears to be a luminous nova-like variable, and the strong He ii suggests it may be an intermediate polar. The period of KUV 03580+0614 is similar to members …

Faculty Tenure Report, Fall 2001, University Of Northern Iowa. Office Of Information Management And Analysis.

Institutional Effectiveness & Planning Documents

Statistical report showing the number of faculty that are tenured, on the tenure track, or not on the tenure track, broken down by college, department, gender, minority status, and if full or part time.

Price Laboratory School University Of Northern Iowa Online Newsletter, V12n2, October 2001, University Of Northern Iowa. Malcolm Price Laboratory School

Malcolm Price Laboratory School Newsletter

Inside this Issue:
-- MPLS Study Team Report
-- Collect a MILLION PenNIES Campaign
-- NCA Process: 2001-02
-- The PLS Mentoring Program
-- Thank You Mentor Families
-- Swimming Suits Needed
-- Welcome New Faculty and Staff
-- Secondhand Smoke
-- Governor Appoints Follett to Latino Affairs Commission
-- NUMS History Sleuths Compete
-- NU Theatre Production: Rumors
-- Future of the Yearbook
-- Olympiada of Spoken Russian
-- The Russians are Coming!
-- PLS Writing Center
-- Third Graders to Attend Conference
-- Kuhn Chiropractic Visits PLS
-- PLS Offers Free Wellness Classes
-- AHERA Notification
-- Pesticide …

Let's Cross Platforms, Miyoung Yoon

Theses

Different platforms and browsers render text and images differently. Therefore, web designers should know how to deal with these types of media. Many web designers use the Macintosh, and the majority of the users are on the PC. This thesis project examines the visual elements of web design consisting of fonts, colors, and graphics and how they change between the PC and Mac. The two major browsers used by people to surf the web are Internet Explorer and Netscape Navigator and they also cause problems with consistency. Resolution differences cause font problems. Knowing the default system resolution to specify with …

Techniques For Reduced Order Modeling Of Aeroelastic Structures With Deforming Grids, John S. R. Anttonen

Theses and Dissertations

Reduced order modeling (ROM) seeks to make the modeling of aeroelastic behavior practical by reducing computation time for design codes. Deforming grids are often used in aeroelastic problems to account for the deformation of the structure. Proper Orthogonal Decomposition (POD/ROM) is a ROM technique that operates in an index-space for computations, not accounting for changes in grid dynamics, and must be modified to reflect grid deformation properly. To investigate and account for the effects of grid deformation on POD/ROM, a new algorithm is developed that incorporates modifications to the usual formulation. Evaluation of the new algorithm is accomplished through application …

Freightliner Llc Manufacturing Optimization, Jerry Compton, Ryan Jefferis, Hasnah Mat-Amin, Felix Ngoussou

Engineering and Technology Management Student Projects

Freightliner LLC has been producing innovative products since 1942 for the trucking industry. Following a 1981 acquisition by Daimler-Benz AG, Freightliner has steadily gained market share through acquisition and fleet sales. Following record production in 1999 at maximum yield levels, year 2000 hit the heavy truck market especially hard. High diesel fuel prices, low used truck values, and a slowing economy were just a few reasons for reduced truck sales.

Through Ql of 2001, heavy vehicle production was down 54% compared to 2000 in attempts of lowering inventory amounts. In this new market, capacity is no longer the overall manufacturing …

Dynamical Theory For Modeling Dipole-Dipole Interactions In A Microcavity: The Green Dyadic Approach, P.T. Leung, R. L. Hartman

Physics Faculty Publications and Presentations

A dynamical theory for modeling the dipole-dipole interaction in a microcavity is formulated using the Green dyadic approach. To our knowledge, this theory is one of the most general in many aspects of modeling the phenomenon. It accommodates an arbitrary number of layers adjacent to the cavity, constant but arbitrary dielectric properties within each layer, inclusion of retardation effects, arbitrary dipole orientations, and an unlimited number of interacting dipoles. Numerical results for the emission properties of interacting molecular dipoles in a microcavity are presented to illustrate the capability of the method.

Solar: Towards A Flexible And Scalable Data-Fusion Infrastructure For Ubiquitous Computing, Guanling Chen, David Kotz

Dartmouth Scholarship

As we embed more computers into our daily environment, ubiquitous computing promises to make them less noticeable and to avoid information overload. We see, however, few ubiquitous applications that are able to adapt to the dynamics of user, physical, and computational context. The challenge is to allow applications flexible access to these sources, and yet scale to thousands of devices and sensors. In this paper we introduce our proposed infrastructure, Solar. In Solar, information sources produce events. Applications may subscribe to interesting sources directly, or they may instantiate and subscribe to a tree of operators that filter, transform, merge and …

Altruism, The Prisoner's Dilemma, And The Components Of Selection, Jeffrey Fletcher, Martin Zwick

Complex Systems Faculty Publications and Presentations

The n-player prisoner’s dilemma (PD) is a useful model of multilevel selection for altruistic traits. It highlights the non zero-sum interactions necessary for the evolution of altruism as well as the tension between individual and group-level selection. The parameters of the n-player PD can be directly related to the Price equation as well as to a useful alternative selection decomposition. Finally, the n-player PD emphasizes the expected equilibrium condition of mutual defection in the absence of higher levels of organization and selection. Keywords: prisoner's dilemma, N-player PD, multilevel selection, altruism, Price equation, group selection

Focal Point, Volume 15 Number 02, Portland State University. Regional Research Institute

Research and Training Center - Focal Point

This issue of Focal Point begins from the idea that enrichments, far from being frivolous, are instead essential. The joy and meaningfulness which enrichments provide make a direct, positive contribution to quality of life. What is more, enriching experiences add to our reserves of strength and purpose, and these reserves in turn enable us to adapt, cope, recover and even thrive in the face of challenges and stresses. Specifically, this issue of Focal Point looks at research related to sources of enrichment, and at innovative programs that promote enrichment and achieve positive outcomes for children with emotional and behavioral challenges, …

Reifying Communication At The Application Level, Andrew P. Black, Jie Huang, Jonathan Walpole

Computer Science Faculty Publications and Presentations

Middleware, from the earliest RPC systems to recent Object-Oriented Remote Message Sending (RMS) systems such as Java RMI and CORBA, claims transparency as one of its main attributes. Coulouris et al. define transparency as “the concealment from the … application programmer of the separation of components in a distributed system.” They go on to identify eight different kinds of transparency.

We considered titling this paper “Transparency Considered Harmful”, but that title is misleading because it implies that all kinds of transparency are bad. This is not our view. Rather, we believe that the choice of which transparencies should be offered …

Computational Fluid Dynamic Study Of A Nascar Winston Cup Series Race Car, Terry L. Meek Jr.

Mechanical & Aerospace Engineering Theses & Dissertations

Since the goal of NASCAR racing is to win and since drag is a force the vehicle must overcome, a thorough understanding of the drag generating airflow around and through the automobile is greatly desired. The external airflow contributes to most of the drag that a car experiences and most of the downforce the vehicle produces. Therefore, an estimate of the vehicle's performance may be evaluated using a computational aerodynamics model. This thesis presents a computational fluid dynamic (CFD) analysis of a NASCAR Winston Cup series race car to investigate the salient flow characteristics.

Before a computational analysis could be …

Faculty Senate Degree Candidates, Fall 2001, Vol 28, P 417-510, Unm Faculty Senate

Faculty Senate Documents

No abstract provided.

The Distribution Of Airborne Coal Dust In Soil Profiles Of Norfolk, Va And Its Implication For Arsenic Loading To These Soils, William Joseph Bounds

OES Theses and Dissertations

Norfolk, Virginia is home to the Northern Hemisphere's largest coal terminal the Lamberts Point Docks. The coal loading process of this terminal creates large amounts of coal dust, which subsequently is distributed throughout the local region by atmospheric transport and deposition. While the coal dust itself poses only minor health hazards, certain trace elements within the coal, particularly arsenic, may pose environmental as well as significant health hazards. Within coal, arsenic occurs primarily in the mineral pyrite. As pyrite in the coal dust is subsequently oxidized via exposure to the atmosphere and/or meteoric water, arsenic may be released to the …

Investigation Of Dual-Mode Combustion With Large Upstream Interaction, Melanic Olynciw-Mills

Mechanical & Aerospace Engineering Theses & Dissertations

Dual-mode scramjet combustor configuration with significant upstream interaction is investigated numerically. The possibility of scaling the domain to accelerate the convergence an3 reduce the computational time is explored. The supersonic combustor configuration was selected to provide an understanding of key features of upstream interaction and to identify physical and numerical issues relating to modeling of dual-mode configurations. The numerical analysis was performed with vitiated air at freestream Mach number of 2.5 using hydrogen as the sonic injectant. Results are presented for two-dimensional models and a three-dimensional jet-to-jet symmetric geometry. Comparisons are made with experimental results. Two-dimensional and three-dimensional results show …

Transonic And Supersonic High Alpha Flow Prediction And Control For An Sc-X Space Vehicle, Ruobo You

Mechanical & Aerospace Engineering Theses & Dissertations

Universal Space Line (USL) is interested in developing an aerospace vehicle that flies at very high angles of attack (AOAs) through wide range of Mach numbers. The basic model configuration is called SC-X model, which consists of a blunt cone and a cylindrical afterbody. A structured O-type grid was generated for this model by numerically solving elliptic partial differential equations. The three-dimensional, unsteady, compressible, Reynolds-averaged Navier-Stokes equations coupled with Spalart-Allmaras turbulence model were used as computational tool to investigate the transonic and supersonic flows around the SC-X model pitched at AOA of 45°. For the code validation, this computational solver …

An Object-Oriented Resource Pool Model In Support Of Discrete Event Simulations, Srinivas Gullapalli

Electrical & Computer Engineering Theses & Dissertations

The proper distribution of resources is a key factor in simulation. Resources provide the supporting facilities, equipment, and personnel for carrying out activities. The number of resources has a direct impact on the overall effectiveness of the simulation as it does in real life. If the number is insufficient, it generally takes more time for the process to complete. On the other hand, if the number is too high, the cost incurred on the resources will be unnecessarily large. Therefore, the count should be a compromise between the two extremes.

In this thesis, an attempt is made to generalize the …

Determination Of Life Cycle Cost Under Uncertainty, Hamoud R. Al-Otaibi

Mechanical & Aerospace Engineering Theses & Dissertations

The subject of this thesis is a Life Cycle Cost (LCC) model that takes into consideration the uncertainty of equipment failure rate and input data. The outcome of LCC depends on numerous estimates, forecasts, assumptions, and approximations of real-life data. Each of these factors has the potential to introduce error into the results. The study focuses upon the database generated for equipment failure rates data developed from historical database based on Weibull distribution parameters. The model provides a method to simulate real-world project life cycle.

Longitudinal Analysis Of Cohesion In Student Work Teams: The Efficacy Of Teamwork Skills Training, Kari Rachel Strobel

Psychology Theses & Dissertations

This study was a longitudinal examination of the effects of teamwork skills training on team cohesion and team performance. Participants were 11 teams, made up of three-to-five undergraduate students who enrolled in a team-based Industrial/Organizational psychology course. For 16 weeks, each team completed three graded assignments per week and was tracked with regard to levels of task and social cohesion. During the seventh week, teams received theory-based training on basic teamwork processes. Results indicate that the training intervention had a significant positive impact on team cohesion. However, training did not affect team performance levels as expected. Discussion centered on the …

Beliefs Of Science Teachers Toward The Teaching Of Science/Technological/Social Issues: Are We Addressing National Standards?, Jon E. Pedersen, Samuel Totten

Department of Teaching, Learning, and Teacher Education: Faculty Publications

As science educators, we must view the changing nature of society brought on by technology and the global nature of society as an impetus to reexamine the nature of science instruction. We have been bestowed with the responsibility to educate students on a variety of topics that less than two decades ago did not exist. Many of these social issues are controversial in nature and are directly linked to the local, regional, national, and global communities in which we exist. However, including these social issues in the extant curriculum of science has, at best, been limited. This is true even …

Optimal Delegation And Decoupling In The Design Of Liability Rules, Ian M. Ayres, Paul M. Goldbart

Michigan Law Review

Calabresi and Melamed began a scholarly revolution by showing that legal entitlements have two readily distinguishable forms of protection: property rules and liability rules. These two archetypal forms protect an entitlement holder's interest in markedly different ways - via deterrence or compensation. Property rules protect entitlements by trying to deter others from taking. Liability rules, on the other hand, protect entitlements not by deterring but by trying to compensate the victim of nonconsensual takings. Accordingly, the compensatory impetus behind liability rules focuses on the takee's welfare - making sure the sanction is sufficient to compensate the takee. The deterrent impetus …

Domain State Susceptibility In Fecl2/Copt-Heterostructures, Christian Binek

Christian Binek Publications

Magnetic heterostructures with perpendicular anisotropy consisting of antiferromagnetic (111)-oriented FeCl2 single crystals and thin ferromagnetic CoPt-multilayers are investigated by ac-susceptometry after cooling in various axial magnetic fields to below the Néel temperature. The freezing process drives the system into a metastable antiferromagnetic domain state which gives rise to a huge excess contribution to the complex parallel susceptibility on heating in zero magnetic field. Its glow curve-like temperature dependence is modeled within the framework of a simple analytical approach. It involves the susceptibility of thermally activated clusters originating from antiferromagnetic stacking faults as well as the contribution of pairs of antiparallel …

The Wright Stuff: The Mathematics Of The Wright Brothers, Robert N. Mccullough

Following in the Footsteps of the Wright Brothers: Their Sites and Stories

On a cold and blustery day in December of 1903 near the town of Kitty Hawk, North Carolina, two brothers from Dayton, Ohio, Wilbur and Orville Wright, haul an ungainly looking craft from a shed and get ready to attempt a feat that has never been accomplished before - to fly a heavier-than-air powered airplane with a person on board.

The weather conditions that day were terrible. The temperature was 34 degrees F and the winds were steadily blowing between 20 and 30 miles an hour [McFarland, 395].1 The wind chill (according to modern tables) was around 8 degrees F …

Washington University Record, September 28, 2001

Washington University Record

No abstract provided.

Volume 39, Number 5: September 28, 2001, University Of North Dakota

University Letter Archive

No abstract provided.

Newscast, September 28, 2001, Illinois State University, College Of Applied Science And Technology

newsCAST

Newsletter of the Illinois State University College of Applied Science and Technology

The Bg News September 28, 2001, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. September 28, 2001. Volume 88-Issue 24.

Western News, Sept. 27, 2001, Western Michigan University

Western News (1972-2018)

Story highlights: Staff ready to respond to national tragedy, WMU a 'Most Wired College' according to Yahoo magazine, Julien book wins Kovacs Prize, ‘Learning Curves' author to visit campus, On Campus with Rob Kakuk, Writer;CEO and educator named as 2001 Distinguished Alumni.

Easterner, Vol. 53, No. 1, September 27, 2001, Associated Students Of Eastern Washington University

Student Newspapers

This issue of the Easterner contains articles about the returning students, enrollment, additions to the Eagle Shop, the Pathways to Progress program to make capital improvements on campus, a program at Reid Elementary to provide emotional support following 9/11, the upcoming football game against the University of Montana, and the home volleyball defeat to Montana State.