Digital Commons Network^™

Numerical Simulation Of Gas-Phonon Coupling In Thermal Transpiration Flows, Xiaohui Guo, Dhruv Singh, Jayathi Murthy, Alina A. Alexeenko

PRISM: NNSA Center for Prediction of Reliability, Integrity and Survivability of Microsystems

Thermal transpiration is a rarefied gas flow driven by a wall temperature gradient and is a promising mechanism for gas pumping without moving parts, known as the Knudsen pump. Obtaining temperature measurements along capillary walls in a Knudsen pump is difficult due to extremely small length scales. Meanwhile, simplified analytical models are not applicable under the practical operating conditions of a thermal transpiration device, where the gas flow is in the transitional rarefied regime. Here, we present a coupled gas-phonon heat transfer and flow model to study a closed thermal transpiration system. Discretized Boltzmann equations are solved for molecular transport …

A Numerical Fatigue Damage Model For Life Scatter Of Mems Devices, Behrooz Jalalahmadi, Farshid Sadeghi, Dimitrios Peroulis

PRISM: NNSA Center for Prediction of Reliability, Integrity and Survivability of Microsystems

This paper presents a fatigue damage model to estimate fatigue lives of microelectromechanical systems (MEMS) devices and account for the effects of topological randomness of material microstructure. For this purpose, the damage mechanics modeling approach is incorporated into a new Voronoi finite-element model (VFEM). The VFEM developed for this investigation is able to consider both intergranular crack initiation (debonding) and propagation stages. The model relates the fatigue life to a damage parameter "D" which is a measure of the gradual material degradation under cyclic loading. The fatigue damage model is then used to investigate the effects of microstructure randomness on …

Compression After Impact Load Prediction In Graphite/Epoxy Laminates Using Acoustic Emission And Artificial Neural Networks, Anthony Michael Gunasekera

Master's Theses - Daytona Beach

The purpose of this research was to investigate the effectiveness of artificial neural networks (ANNs) in predicting the compression after impact (CAI) load of graphite/epoxy laminates from acoustic emission (AE) nondestructive testing (NDT) data. Thirty-four 24-ply bidirectional woven cloth laminate coupons were constructed and impacted at various energy levels ranging from 8 to 20 Joules, generating barely visible impact damage (BVID). Acoustic emission data were acquired as the coupons were compressed to failure. Not having been analyzed by previous experimenters, several noise tests were also performed to determine the impact of external noise on acoustic emission data during testing. Once …

Case Studies Of Imf Driven Auroral Emissions, Ryan James Soldin

Master's Theses - Daytona Beach

The topic of solar wind - magnetosphere - ionosphere coupling has become increasingly important in recent years, as it deals with the energy transfer from the Sun to the Earth. The solar wind plasma has direct entry into Earth's ionosphere at the polar cusp. At the cusp Earth's magnetic fields lines are open and connect .directly to the magnetic field lines of the solar wind. The energy from the solar wind particles precipitating into the ionosphere are dissipated as the aurora. The purpose of this thesis was to present case studies of the coupled relationship between the periodic fluctuations in …

Determination Of Stability And Control Derivatives For A Modern Light Composite Twin Engine Airplane, Monica M. Londono

Master's Theses - Daytona Beach

To develop and compare full envelope stability and control derivatives and their associated errors for a modern light composite twin engine airplane from flight test data and digital DATCOM (Data Compendium). This development is to serve three purposes 1) to provide data for validation of newer analytical techniques such as Computational Fluid Dynamics (CFD), 2) to provide public domain static and dynamic stability and control derivatives for a modern twin engine airplane, 3) to analyze the relationship between test design and error for both output error and equation error methods.

A flight test program was conducted on a Diamond Twin …

Educational Leadership 2009 Apr Self-Study & Documents, University Of New Mexico

UNM Academic Program Review

UNM Educational Leadership APR self-study report, review team report, response to review report, and initial action plan for Fall 2009, fulfilling requirements of the Higher Learning Commission. Educational Leadership merged with Teacher Education following this review.

Accounting For Differences Among Patients In The Fda Approval Process, Mark Van Der Laan, Anup Malani, Oliver Van Der Bembom

Coase-Sandor Institute for Law & Economics Research Paper Series

The FDA employs an average-patient standard when reviewing drugs: it approves a drug only if the average patient (in clinical trials) does better on the drug than on control. It is common, however, for different patients to respond differently to a drug. Therefore, the average-patient standard can result in approval of a drug with significant negative effects for certain patient subgroups (false positives) and disapproval of drugs with significant positive effects for other patient subgroups (false negatives). Drug companies have a financial incentive to avoid false negatives. After their clinical trials reveal that their drug does not benefit the average …

Structural Development In Ge-Rich Ge-S Glasses, Y. Sakaguchi, Dmitri Tenne, Maria Mitkova

Physics Faculty Publications and Presentations

The Raman spectra of Ge-S glasses in the Ge-rich region from Ge 33 to 46 % have been investigated in order to know the structural development of the network glasses. From the detailed curve fits, we have found that there is an unassigned peak at 410 cm^-1 and it becomes larger with increasing Ge composition. To clarify the structural origin of the peak, we virtually constructed the atomic arrangement of the glassy state starting from the crystalline state through the liquid state and changed the composition gradually depleting the medium in sulfur. From the consideration of the structural modeling …

Droughtscape, Fall 2009, Kelly Smith

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

DroughtScape, Fall 2009

General Education Survey Reports, 2009, Assessment Of Student Learning Committee

Assessment of Student Learning Reports

No abstract provided.

A Best Practice Model For Cloud Middleware Systems, Ajith Harshana Ranabahu, E. Michael Maximilien

Kno.e.sis Publications

Cloud computing is the latest trend in computing where the intention is to facilitate cheap, utility type computing resources in a service-oriented manner. However, the cloud landscape is still maturing and there are heterogeneities between the clouds, ranging from the application development paradigms to their service interfaces,and scaling approaches. These differences hinder the adoption of cloud by major enterprises. We believe that a cloud middleware can solve most of these issues to allow cross-cloud inter-operation. Our proposed system is Altocumulus, a cloud middleware that homogenizes the clouds. In order to provide the best use of the cloud resources and make …

Context And Domain Knowledge Enhanced Entity Spotting In Informal Text, Daniel Gruhl, Meena Nagarajan, Jan Pieper, Christine Robson, Amit P. Sheth

Kno.e.sis Publications

This paper explores the application of restricted relationship graphs (RDF) and statistical NLP techniques to improve named entity annotation in challenging Informal English domains. We validate our approach using on-line forums discussing popular music. Named entity annotation is particularly difficult in this domain because it is characterized by a large number of ambiguous entities, such as the Madonna album “Music” or Lilly Allen’s pop hit “Smile”.

We evaluate improvements in annotation accuracy that can be obtained by restricting the set of possible entities using real-world constraints. We find that constrained domain entity extraction raises the annotation accuracy significantly, making an …

The Values Of Interdisciplinarity In Homicide Law Reform, Robert Weisberg

University of Michigan Journal of Law Reform

Professor Reid Fontaine's article, Adequate (Non)Provocation and Heat of Passion as Excuse Not Justification, makes a convincing case for treating heat of passion wholly as an excuse not a justification, as the only sensible way to comprehend its various forms. In doing so, Professor Fontaine stimulates further thinking about heat of passion doctrine, along two dimensions.

Volume 2009-10 - Issue 1 - Fall, 2009, Echoes Staff

Rose Echoes

No abstract provided.

Virtual Teams For New Product Development – An Innovative Experience For R&D Engineers, N. Ale Ebrahim, S. Ahmed, Z. Taha

Research Publications (2006 to 2010)

New interaction tools such as internet allow companies to gain valuable input from research and development (R&D) engineers via virtual teams. Consequently, engineers also get more expertise in diminutive timeframes. Virtual R&D teams present the key impetus to the technology acquisition process. The present knowledge-economy era is characterized by short product life-cycles. Virtual R&D teams may reduce time-to-market, make available a large pool of new product know-how and provide greater flexibilities, which are the key success factors in a competitive market. This comprehensive review contains almost 100 references and covers the recent literature with emphasis on the topic. The review …

Phenotopic Plasticity Of Leaf Shape Along A Temperature Gradient In Acer Rubrum, Dana L. Royer, Laura A. Meyerson, Kevin M. Robertson, Jonathan M. Adams

Natural Resources Science Faculty Publications

Both phenotypic plasticity and genetic determination can be important for understanding how plants respond to environmental change. However, little is known about the plastic response of leaf teeth and leaf dissection to temperature. This gap is critical because these leaf traits are commonly used to reconstruct paleoclimate from fossils, and such studies tacitly assume that traits measured from fossils reflect the environment at the time of their deposition, even during periods of rapid climate change. We measured leaf size and shape in Acer rubrum derived from four seed sources with a broad temperature range and grown for two years in …

Georgia Library Quarterly, Fall 2009, Susan Cooley

Georgia Library Quarterly

Complete issue of Georgia Library Quarterly, Fall 2009, vol. 46, no. 4.

Putting Trees Back In The Hands Of Malians: L’Association Malienne Pour La Conservation De La Faune Et De L’Environnement And The Balance Between Using And Protecting Local Forests, Cara Peterson

Independent Study Project (ISP) Collection

Products from trees provide the essential human necessities of food and shelter, as well as the means to cook and construct them with firewood and lumber. With the earth’s ever increasing population and growing industries, these needs have also risen, and forests worldwide are feeling the strain of deforestation and over usage for both commercial and household consumption. Deforestation in Africa is occurring at a smaller scale than on other continents, but this does not mean it is any less damaging to local ecosystems (Bessassen, 2009, p. 76). In fact, African forests are particularly stressed because approximately 90% of the …

Effects Of Re-Grown Forest Habitat On Lemur Catta Behavior, Sophie Ackoff

Independent Study Project (ISP) Collection

This study examines the effects of re-grown forest habitat on L. catta behavior at Berenty Private Reserve in Southern Madagascar during the early wet season. Evaluation of the reforested area versus natural forest revealed significant differences in species composition and food availability. Though the re-grown forest showed signs of forest regeneration and total greater food availability, the natural forest of Malaza proved to contain more preferred food sources for L. catta. Behavioral observations were collected over eight full-day troop follows and showed significant differences in feeding behavior, activity budget, and intra-troop and inter-troop aggressions. The WELL troop in Ankoba, the …

Music In Its Social Context: Fiji In A Microcosm, Alexander Greene

Independent Study Project (ISP) Collection

The music of Fiji flows throughout the country as rich as the food and as omnipresent as the kava. Music touches all aspects of the Fijian way of life. Whether one is Indo-Fijian, Indigenous Fijian, from another pacific island, kylomo, or a kavailagi, there is no escaping music while in Fiji. This paper looks to explore the different social settings and context that music is created and then in turn listened to, and how the social setting of Fiji has shaped what music is created here. This paper also attempts to gather in a cohesive manner, what music is being …

Know Your Enemy: Tibetan Perceptions Of And Approaches To Chinese Studies In Exile, Katherine Mechling

Independent Study Project (ISP) Collection

Achieving peaceful dialogue between Chinese and Tibetans is the crux of the Tibetan community in exile’s strategy to regain its homeland. Yet despite the recognized importance of cross-cultural communication the Tibetans, ideologically unwilling to separate “China the Oppressor” from “China the Neighbor” or even, potentially, “China the Co-Collaborator,” have largely avoided studying their adversary. Although increased literacy in Chinese language, knowledge of Chinese history and understanding of Chinese culture would enable the Tibetans to engage with China more effectively and productively, few initiatives exist in exile that facilitate the spread of such information. Receiving only a basic overview of Chinese …

Otter Realm, October 1, 2009, California State University, Monterey Bay

The Otter Realm

CSUMB Sets Sail -- Sooner Rather Than Later -- What You Otter Do! Oct 1 - Oct 15 -- Hello...Bonjour...Buenos Dias -- New Bins=No Excuses -- Pirating Still Prevalent -- Parking Wars -- Swine Flu -- Seeking Medical Attention -- Otter of the Issue: Mindy Mills -- Personal Growth and Counseling Center: Know When to Get Help -- Raising Baby Jaws -- Surroundings: Lessons -- No Cop, No Stop -- Sunday Funday -- Nor-Cal Ren Faire -- Vision And Volume -- Blink 182 Reunited After Four Year Break-up -- Fly Rides and Hot Chili: 11th Annual Marina Air Faire -- …

The Advocate, October 1, 2009, Minnesota State University Moorhead

The Advocate

No abstract provided.

Borrowing From The B Schools: The Legal Case Study As Course Materials For Transaction Oriented Elective Courses: A Response To The Challenges Of The Maccrate Report And The Carnegie Foundation For Advancement Of Teaching Report On Legal Education, Celeste M. Hammond

Transactions: The Tennessee Journal of Business Law

No abstract provided.

Protecting The Retail Investor In An Age Of Financial Uncertainty, Barbara Black

University of Dayton Law Review

No abstract provided.

Warm Ideas And Chilling Consequences, Arthur P. Bochner

Communication Faculty Publications

In the process of writing my academic memoirs spanning a period of more than thirty-five years, I discovered how crucial the work of Gregory Bateson had been to my life as a teacher, a scholar, and a relational partner. In this paper I celebrate Bateson's charming and incisive ideas about how communication works, his deep reservations about the worship of quantification, and his astute analysis of what is at stake when we make epistemological errors in everyday life. Reviewing a turning point in my academic life—a conference held in 1979, I reaffirm the importance of warm ideas and provide a …

The Voice, Fall 2009: Volume 55, Issue 1, Dordt College

The Voice Archive

Shim Makes an Internship Happen; Building Assets for Life; La Fiesta Spices Up the Weekend; Love Your Library; Zach Mulder Finds His Place in Politics; Dordt Cements a Growing Partnership with Northrise University in Zambia; Vos Will Help Zambians Find Better Ways to Feed Themselves; Writing Students Have an Impact on State EMT Squads; College Breaks Ground on Apartments; Engineering Keeps Up with Times; Commons Goes Greener; Concert Choir Honored by Regional Invitation; Nursing Department Gets New Digs; Fall Brings Out All of the Campus Athletic Teams; Learning Takes a Vacation in The Netherlands; Ribbens Academic Complex: Classroom Building Overhaul …

Moving Forward And Outward, Geoffrey D. Reynolds

Faculty Publications

Moving Forward and Outward is the third of five short articles about the history of Hope College, located in Holland, Michigan.

Integrating Elf4 Into The Circadian System Through Combined Structural And Functional Studies, Elsebeth Kolmos, Monika Nowak, Maria Werner, Katrin Fischer, Guenter Schwarz, Sarah Mathews, Heiko Schoof, Ferenc Nagy, Janusz M. Bujnicki, Seth J. Davis

Faculty Publications

The circadian clock is a timekeeping mechanism that enables anticipation of daily environmental changes. In the plant Arabidopsis thaliana, the circadian system is a multiloop series of interlocked transcription-translation feedbacks. Several genes have been arranged in these oscillation loops, but the position of the core-clock gene ELF4 in this network was previously undetermined. ELF4 lacks sequence similarity to known domains, and functional homologs have not yet been identified. Here we show that ELF4 is functionally conserved within a subclade of related sequences, and forms an alpha-helical homodimer with a likely electrostatic interface that could be structurally modeled. We support this …

Los Arcos - Fall 2009, University Of Texas-Pan American

UTPA Archives - Los Arcos Magazine

No abstract provided.