Digital Commons Network^™

Hoard: A Peer-To-Peer Enhancement For The Network File System, Ali Raza Butt, Troy A. Johnson, Yili Zheng, Y. Charlie Hu

Department of Electrical and Computer Engineering Technical Reports

This work presents Hoard, a peer-to-peer enhancement for the widely-used Network File System (NFS). Certain features–such as location transparency, mobility transparency, load balancing, and file replication–are missing from NFS but are commonly found in peer-to-peer storage applications. On the other hand, features that NFS provides–specifically hierarchical file organization, directory listings, and file permissions–are missing from most peer-to-peer storage applications. Hoard strives to provide a low-overhead enhancement for NFS through a NFS server that leverages a peer-to-peer routing substrate for efficient node communication. By blending the strengths of NFS with those of peer-to-peer, Hoard provides a single, reliable, shared file system …

An Algorithm For Register-Synchronized Precomputation In Intelligent Memory Systems, Wessam Hassanein, José Fortes, Rudolf Eigenmann

Department of Electrical and Computer Engineering Technical Reports

This paper presents a novel compiler algorithm for selecting program slices that prefetch load values concurrently with program execution. The algorithm is evaluated in the context of an intelligent memory system. The architecture consists of a main processor and a simple memory processor. The intelligent memory system pre-executes program slices and forwards values of critical loads to the main processor ahead of their use. The compiler algorithm selects program slices for memory processor execution, and inserts synchronization instructions that synchronize main and memory processors. Experimental results of the generated code on a cycle-accurate simulator show a speedup of up to …

Data Forwarding Through In-Memory Precomputation Threads, Wessam Hassanein, José Fortes, Rudolf Eigenmann

Department of Electrical and Computer Engineering Technical Reports

In modern architectures, memory access latency is an increasingly performance-limiting factor. To reduce this latency, we propose concepts and implementation of a new technique that uses an in-memory processor to precompute future, critical load addresses and forward the computed values to the main processor. The acronym for this technique is IMPT for In-Memory Precomputation-based forwarding Threads. IMPT combines the advantages of precomputationbased techniques with the low memory access latency of processing-in-memory. To evaluate IMPT, we use a cycle-accurate simulation of an aggressive out-of-order processor with accurate simulation of bus and memory contention. The results show a performance gain of up …

Femtosecond Response Of Diffraction Efficiency Of Gaas/Algaas Photorefractive Multiple Quantum Well, H. Tanaka, K. Terawaki, K. Kou, S. Tsuboi, S. Nagahara, T. Kita, O. Wada, K. Nakagawa, D. D. Nolte

Department of Physics and Astronomy Faculty Publications

Ultrafast response of the diffraction efficiency of a photorefractive multiple quantum well(PRMQW) has been investigated by pump-probe spectroscopy. We evaluated the temporal evolution of the diffraction efficiency of the PRMQW using a differential transmission spectrum. The results were compared with the output-widening factor of diffracted pulses. A good agreement obtained between our evaluation results and the results. of electric-field cross correlation has confirmed the applicability of our technique in characterizing the diffraction efficiency of the PRMQW.

On Query Processing And Optimality Using Spectral Locality-Preserving Mappings, Mohamed F. Mokbel, Walid G. Aref

Department of Computer Science Technical Reports

No abstract provided.

Scheduling For Shared Window Joins Over Data Streams, Moustafa A. Hammad, Michael J. Franklin, Walid G. Aref, Ahmed K. Elmagarmid

Department of Computer Science Technical Reports

No abstract provided.

2003 Rosabeth Moss Kanter Award For Excellence In Work-Family Research Publication, Center For Families, Center For Work And Families

Center for Families Publications

No abstract provided.

Partial Sound Field Decomposition In Multi-Reference Nearfield Acoustical Holography By Using Optimally-Location Virtual References, J Stuart Bolton, Yong-Joe Kim

Publications of the Ray W. Herrick Laboratories

No abstract provided.

Proteasome Inhibition Stabilizes Tau Inclusions In Oligodendroglial Cells That Occur After Treatment With Okadaic Acid, Deepa V. Dabir

Biology Faculty Works

Tau-positive inclusions in oligodendrocytes are consistent neuropathological features of corticobasal degeneration, progressive supranuclear palsy, and frontotemporal dementias with Parkinsonism linked to chromosome 17. Here we show by immunohistochemistry that tau-positive oligodendroglial inclusion bodies also contain the small heat-shock protein (HSP) αB-crystallin but not H HSP70. To study the molecular mechanisms underlying inclusion body formation, we engineered an oligodendroglia cell line (OLN-t40) to overexpress the longest human tau isoform. Treatment of OLN-t40 cells with okadaic acid (OA), an inhibitor of protein phosphatase 2A, caused tau hyperphosphorylation and a decrease in the binding of tau to microtubules. Simultaneously, tau-positive aggregates that also …

Irrigation Technology Transitions In The Mid-Plains States: Implications For Water Conservation/Water Quality Goals And Institutional Changes, Glenn D. Schaible, Marcel P. Aillery

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

A Parks modified multinomial logit model is used to examine the influence of the agricultural economic environment on irrigation technology transitions in the mid-plains states. Simulation analyses assess expected agricultural water conservation and its implications for water quality/environmental goals and water institutional reform. Under baseline agri-economic assumptions, regional agricultural water use efficiency could improve from 2.3% to 9.8%. Technology-specific elasticities show that crop price effects on irrigation technology transitions are relatively inelastic. Results for the mid-plains states differ from those obtained for the Pacific north-west (an earlier study), implying that differentially endowed resource regions will likely require different resource conservation …

Time-Mortality Relationships For Tribolium Castaneum (Coleoptera: Tenebrionidae) Life Stages Exposed To Elevated Temperatures, Rizana Mahroof, Bhadriraju Subramanyam, James E. Throne, Anil Menon

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The use of elevated temperatures (≥40-60°C) or heat treatments for managing insects in food-processing facilities is a viable alternative to space fumigation with methyl bromide. Quantitative data are lacking on the responses of life stages of the red flour beetle, Tribolium castaneum (Herbst), an important pest of food-processing facilities worldwide, to elevated temperatures used during heat treatments. We determined time-mortality relationships for eggs, young (neonate) larvae, old larvae, pupae, and adults of T. castaneum, exposed to constant temperatures of 42, 46, 50, 54, 58, and 60°C. Generally, mortality of each stage increased with an increase in temperature and exposure …

The Use Of Web Services In Bioinformatics, Sheng Lu

Electronic Theses and Dissertations

No abstract provided.

Building Extraction Using Neuro-Fuzzy Pattern Recognition With Feature Detecting Structures, Patrick M. Jackson

Electronic Theses and Dissertations

No abstract provided.

Moisture Durability Study Of Pultruded Aoc P 920, Chaitali Meda

Electronic Theses and Dissertations

No abstract provided.

Through A Glass Darkly : Reflections Of Southern Culture In South Carolina's Domestic Violence Policy, Ellen Barbara Meacham

Electronic Theses and Dissertations

No abstract provided.

Bifurcation Analysis Of Hiv-1 Dynamics In Vivo, Revanth Babu Mutyala

Electronic Theses and Dissertations

No abstract provided.

Enrichments Of Microbial Consortia, Mathematical Modeling And Statistical Analysis For Methane Production Form Acetate, Sulabh Madhusudan Koolwal

Electronic Theses and Dissertations

No abstract provided.

Analysis Of Thermal Contact Resistance In A Generic Transmitter, Raghavender Kulkarni

Electronic Theses and Dissertations

No abstract provided.

Vibration And Acoustic Monitoring Of Bearing Faults In Machines With Phase Fluctuations / By Suresh Venugopal, Suresh Venugopal

Electronic Theses and Dissertations

No abstract provided.

Implementation Of The Asymptotic Boundary Conditions In The Fdtd Method/ By Andrew E. Simon, Andrew E. Simon

Electronic Theses and Dissertations

No abstract provided.

Understanding The Effect Of Rye Chromatin In Bread Wheat, A. M. Kumlay, P. Stephen Baenziger, K. S. Gill, D. R. Shelton, Robert A. Graybosch, A. J. Lukaszewski, D. M. Wesenberg

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Most experiments on 1RS translocations in wheat (Triticum aestivum L.) cannot separate the effects of introgressions of rye (Secale cereale L.) chromosome armfromthe absence of corresponding wheat chromosome arms. The objective of this research was to determine the contribution of individual wheat and rye group 1 chromosome arms. Five group 1 ditelosomics, six substitutions, and 16 translocations of 1R in wheat were compared with appropriate controls. All ditelosomics were significantly different from controls for 100-kernel weight (100-KW), flour protein content (FP), Mixograph peak time (MT) and tolerance (MTO), and sodium dodecyl sulfate sedimentation (SDSS) volume. Among the long …

Watershed Vulnerability To Herbicide Transport In Northern Missouri And Southern Iowa Streams, R. N. Lerch, P. E. Blanchard

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Herbicide contamination of streams has been well documented, but little is currently known about the specific factors affecting watershed vulnerability to herbicide transport. The primary objectives of this study were (1) to document herbicide occurrence and transport from watersheds in the northern Missouri/ southern Iowa region; (2) to quantify watershed vulnerability to herbicide transport and relate vulnerability to soil properties; and (3) to compute the contribution of this region to the herbicide load of the Missouri and Mississippi Rivers. Grab samples were collected under baseflow and runoff conditions at 21 hydrologic monitoring stations between April 15 and July 15 from …

Enhanced Bioremediation Of Soil Containing 2,4-Dinitrotoluene By A Genetically Modified Sinorhizobium Meliloti, Sisir K. Dutta, Gail P. Hollowell, Fawzy M. Hashem, L. David Kuykendall

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The symbiotic nitrogen-fixing soil bacterium, Sinorhizobium meliloti, is well known for its ability to interact with the leguminous plant Medicago sativa L. It has, however, not been reported that this species possesses the capability to degrade toxic nitroaromatic compounds, such as 2,4-dinitrotoluene (DNT) which is commonly associated with the degradation of the explosive trinitrotoluene (TNT). In this study, the pJS1 DNT-biodegradative plasmid was genetically transferred to S. meliloti strain USDA 1936, which was confirmed by plasmid profile analysis. Several standard analytical and chemical tests including high performance liquid chromatography (HPLC), nitrite (NO2) release assays, rhizosphere population and plant greenhouse …

Engineering Division, Sara Tompson

Sci-Tech News

No abstract provided.

Memories Of Wendy, Donald Mcandrew

The Writing Center Journal

No abstract provided.

The Behaviour Of Long-Span Reinforced Concrete Beams Under Various Loading Conditions., Ciaran O'Leary

Theses

The relative ease of design and construction of simple reinforced concrete beams provides an attractive option for structural engineering designers. However, where longer spans are involved it is more likely that prestressed concrete or possibly some form of steel beams will be preferred.

The primary cause of failure of longer span reinforced concrete beams is likely to be bending. However, the excessive deflection that might be associated with such beams must also be considered. When designing these beams, structural engineers make considerable use of span/effective depth ratios to select trial sections and check deflection limits. Such ratios are provided in …

Celebrating One Of Michigan's Most Prominent Authors: Christopher Paul Curtis Keeps Us Turning The Pages, Dwight Blubaugh, Kristi Karns, Joe Latham, Amy Mestelle, Amanda Weston

Language Arts Journal of Michigan

No abstract provided.

Resources For Teachers: Relevance--What Matters Today? What Matters Tomorrow?, Julie King

Language Arts Journal of Michigan

No abstract provided.

Balancing The 'E' With Learning And Teaching Skills, Áine O'Brien

Theses

Many lecturers today want to move past passive learning to active learning, to find better ways of engaging students in the learning process. Since most groups of individuals have a variety of learning styles, the lecture material needs to be presented in a variety of ways. With the introduction of web-based learning and e-leaming, lecturers can use a variety of teaching methods with their students.

This study will focus on what is required to balance the ‘E’ with the ‘learning’ skills and ‘teaching’ skills. Too often there is more emphasis placed on the ‘E’ aspect with little consideration given to …

Measuring Software Size For Continuous Process Improvement, Claire O'Sullivan

Theses

This thesis looks at how the size of a software product can be measured. It looks at current software sizing methods (LOC and FPA) and shows that they are not sufficient in today’s rapidly changing environment. The COSMIC-FFP method is introduced and an overview of how it works is given. The hypothesis to be tested in this thesis is whether COSMIC-FFP is an accurate, repeatable sizing method that when applied to any type of software project produces a size measure that can be used to predict the effort required to complete the project.

This thesis investigates the use of the …