Digital Commons Network^™

An Architectural Approach To Improving The Availability Of Parity-Based Raid Systems, Lei Tian, Hong Jiang, Dan Feng, Qin Xin, Sai Huang

School of Computing: Technical Reports

In this paper, we propose an architectural approach, Supplementary Partial Parity (SPP), to addressing the availability issue of parity encoded RAID systems. SPP exploits free storage space and idle time to generate and update a set of partial parity units that cover a subset of disks (or data stripe units) during failure-free and idle/lightly-loaded periods, thus supplementing the existing full parity units for improved availability. By applying the exclusive OR operations appropriately among partial parity, full parity and data units, SPP can reconstruct the data on the failed disks with a fraction of the original overhead that is proportional to …

Microfluidic Electro-Osmotic Flow Pumps, John Mason Edwards

Theses and Dissertations

The need for miniaturized, portable devices to separate and detect unknown compounds has greatly multiplied, leading to an increased interest in microfluidics. Total integration of the detector and pump are necessary to decrease the overall size of the microfluidic device. Using previously developed thin film technologies, an electroosmotic flow (EOF) pump was incorporated in a microfluidic liquid chromatography device. An EOF pump was chosen because of its simple design and small size. EOF pumps fabricated on silicon and glass substrates were evaluated. The experimental flow rates were 0.19-2.30 microliters/minute for 40-400 V. The theoretical pump efficiency was calculated along with …

November 19, 2007 Reporter, University Of Alabama At Birmingham

eReporter (campus newsletter)

No abstract provided.

Um Student Wins Marshall Scholarship, University Of Montana--Missoula. Office Of University Relations

University of Montana News Releases, 1928, 1956-present

No abstract provided.

Supporting Views In Data Stream Management System, Thanaa M. Ghanem, Walid G. Aref, Ahmed K. Elmagarmid, Per-Ake Larson

Department of Computer Science Technical Reports

No abstract provided.

Faculty Senate Executive Committee Agenda, November 19, 2007, Utah State University

Faculty Senate & Faculty Senate Executive Committee

• Brown Bag Lunch with President Canceled on December 5
• Faculty Code Review Committee
• Commencement
• Cultural Activities Council Annual Report
• Libraries Advisory Council Report
• Honors Program Annual Report
• EPC Annual Report
• Committee on Committee Report
• PRPC Items
• Representation of Extension and RCDE on Faculty Senate (2nd reading)
• Reasons of Non-Renewal (1st reading)
• Old Versions of Code

Amp: An Affinity-Based Metadata Prefetching Scheme In Large-Scale Distributed Storage Systems, Lin Li, Xuemin Li, Hong Jiang, Yifeng Zhu

School of Computing: Technical Reports

Prefetching is an effective technique for improving file access performance, which can reduce access latency for I/O systems. In distributed storage system, prefetching for metadata files is critical for the overall system performance. In this paper, an Affinity-based Metadata Prefetching (APM) scheme is proposed for metadata servers in large-scale distributed storage systems to provide aggressive metadata prefetching. Through mining useful information about metadata assesses from past history, AMP can discover metadata file affinities accurately and intelligently for prefetching. Compared with LRU and some of the latest file prefetching algorithms such as NEXUS and C-miner, trace-driven simulations show that AMP can …

An Approach To Mapping Of Shallow Petroleum Reservoirs Using Integrated Conventional 3d And Shallow P- And Sh-Wave Seismic Reflection Methods At Teapot Dome Field In Casper, Wyoming, Anita Onohuome Okojie-Ayoro

Theses and Dissertations

Using the famous Teapot Dome oil field in Casper, Wyoming, USA as a test case, we demonstrate how high-resolution compressional (P) and horizontally polarized shear (SH) wave seismic reflection surveys can overcome the limitations of conventional 3D seismic data in resolving small-scale structures in the very shallow subsurface (< 100-200 m (~328-656 ft)). We accomplish this by using small CMP intervals (5 ft and 2.5 ft, respectively) and a higher frequency source. The integration of the two high-resolution seismic methods enhances the detection and mapping of fine-scale deformation and stratigraphic features at shallow depth that cannot be imaged by conventional seismic methods. Further, when these two high-resolution seismic methods are integrated with 3D data, correlated drill hole logs, and outcrop mapping and trenching, a clearer picture of both very shallow reservoirs and the relationship between deep and shallow faults can be observed. For example, we show that the Shannon reservoir, which is the shallowest petroleum reservoir at Teapot Dome (depth to the top of this interval ranging from 76-198 m (250-650 ft)) can only be imaged properly with high-resolution seismic methods. Further, northeast-striking faults are identified in shallow sections within Teapot Dome. The strike of these faults is approximately orthogonal to the hinge of Teapot Dome. These faults are interpreted as fold accommodation faults. Vertical displacements across these faults range from 10 to 40 m (~33 to 131 ft), which could potentially partition the Shannon reservoir. The integration of 3D and high-resolution P-wave seismic interpretation helped us determine that some of the northeast-striking faults relate to deeper faults. This indicates that some deeper faults that are orthogonal to the fold hinge cut through the shallow Shannon reservoir. Such an observation would be important for understanding the effect on fluid communication between the deep and shallow reservoirs via these faults. Furthermore, the high-resolution seismic data provide a means to better constrain the location of faults mapped from drill hole logs. Relocation of theses faults may require re-evaluation of well locations as some attic oil may have not been drained in some Shannon blocks by present well locations. Therefore our study demonstrates how conventional 3D seismic data require additional seismic acquisition at smaller scales in order to image deformation in shallow reservoirs. Such imaging becomes critical in cases of shallow reservoirs where it is important to define potential problems associated with compartmentalization of primary production, hazard mitigation, enhanced oil recovery, or carbon sequestration.

Modeling T Tauri Winds From He I Λ10830 Profiles, John Kwan, Suzan Edwards, William Fischer

Astronomy: Faculty Publications

The high opacity of He I λ10830 makes it an exceptionally sensitive probe of the inner wind geometry of accreting T Tauri stars. In this line, blueshifted absorption below the continuum results from simple scattering of stellar photons, a situation that is readily modeled without definite knowledge of the physical conditions and recourse to multilevel radiative transfer. We present theoretical line profiles for scattering in two possible wind geometries, a disk wind and a wind emerging radially from the star, and compare them to observed He I λ10830 profiles from a survey of classical T Tauri stars. The comparison indicates …

Ua3/9/5 Skyteach Announcement, Wku President's Office

WKU Administration Documents

Program and remarks used by WKU president Gary Ransdell's announcement of WKU's participation in the UTeach national initiative.

Women In Science & Engineering. What Do We Know? Where Do We Go?, Jane Zimmer Daniels

Feminist Research Institute Lecture Series

Daniels asks: How do we create institutional change to improve the educational and work experience for women and men from diverse cultures and experiences? What legal challenges will there be to proactive support for females and how will we deal with them?

Two Um Faculty Members Enjoying Fulbright Scholarships, University Of Montana--Missoula. Office Of University Relations

University of Montana News Releases, 1928, 1956-present

No abstract provided.

A Summer Time Series Of Particulate Carbon In The Air And Snow At Summit, Greenland, Gayle S.W. Hagler, M Bergin, Eugene A. Smith, Jack E. Dibb

Earth Sciences

Carbonaceous particulate matter is ubiquitous in the lower atmosphere, produced by natural and anthropogenic sources and transported to distant regions, including the pristine and climate-sensitive Greenland Ice Sheet. During the summer of 2006, ambient particulate carbonaceous compounds were characterized on the Greenland Ice Sheet, including the measurement of particulate organic (OC) and elemental (EC) carbon, particulate water-soluble organic carbon (WSOC), particulate absorption coefficient (σ_ap), and particle size-resolved number concentration (PM_0.1–1.0). Additionally, parallel ∼50-day time series of water-soluble organic carbon (WSOC), water-insoluble organic carbon (WIOC), and elemental carbon (EC) were quantified at time increments of 4–24 …

Minutes, College Of Education Council Meeting, November 16, 2007, University Of South Florida St. Petersburg. College Of Education. College Council

College Council Meeting Minutes

Minutes from the University of South Florida St. Petersburg College of Education's Council meeting on November 16, 2007.

The Echo: November 16, 2007, Taylor University

2007-2008 (Volume 95)

Songs, skits, slime at My Gen – One in four students has cheated – Nussbaum goes green, building plans move ahead – Elephant, donkey or chicken: Mock election educates voters – Highlights from nearly 200 comments that accompanied responses to The Echo’s poll about honor system grading – Audience choice award – Dining services are up for bid – Taylor parent advises Obama campaign – Payne’s offers retreat to new blend of coffee shop – My Generation Night – ‘Bee Movie’ generated negative buzz – Josh Porter’s holiday wish list – Q&A: ‘Game Time’ with Ted Kluck – A white …

Oral History Interview With Dr. Gordie Howell, Gordie Howell, Wenxian Zhang

Oral Histories

Gordon E. Howell, or Gordie as he prefers to be called, came to Rollins in search of a master's degree in economics. During his years as a student, he helped teach economics and scuba diving. For three years, he worked as a football coach at Winter Park High school, but by 1967 he returned to Rollins as a physical educator.

A native of North Carolina, Howell attended Western Carolina University for his undergraduate degree before joining the Marines, where he rose to the rank of captain. Taking weekend courses at the University of Virginia inspired him to pursue a career …

Energy-Constrained Recharge, Assimilation, And Fractional Crystallization (Ec-Raxfc): A Visual Basic Computer Code For Calculating Trace Element And Isotope Variations Of Opensystem Magmatic Systems, Wendy A. Bohrson, Frank J. Spera

All Faculty Scholarship for the College of the Sciences

Volcanic and plutonic rocks provide abundant evidence for complex processes that occur in magma storage and transport systems. The fingerprint of these processes, which include fractional crystallization, assimilation, and magma recharge, is captured in petrologic and geochemical characteristics of suites of cogenetic rocks. Quantitatively evaluating the relative contributions of each process requires integration of mass, species, and energy constraints, applied in a self-consistent way. The energy-constrained model Energy-Constrained Recharge, Assimilation, and Fractional Crystallization (EC-RaxFC) tracks the trace element and isotopic evolution of a magmatic system (melt + solids) undergoing simultaneous fractional crystallization, recharge, and assimilation. Mass, thermal, and compositional (trace …

Supercurrent Survival Under A Rosen-Zener Quench Of Hard-Core Bosons, I. Klich, Courtney Lannert, G. Refael

Physics: Faculty Publications

We study the survival of supercurrents in a system of impenetrable bosons on a lattice, subject to a quantum quench from its critical superfluid phase to an insulating phase. We show that the evolution of the current when the quench follows a Rosen-Zener profile is exactly solvable. This allows us to analyze a quench of arbitrary rate, from a sudden destruction of the superfluid to a slow opening of a gap. The decay and oscillations of the current are analytically derived and studied numerically along with the momentum distribution after the quench. In the case of small supercurrent boosts ν, …

Crusader, November, 16, 2007, College Of The Holy Cross

Student Newspapers

The student newspaper for the College of the Holy Cross in Worcester, Massachusetts. Articles include coverage of campus events and issues, sports, editorials and special features.

The Inkwell, Armstrong Atlantic State University

The Inkwell

No abstract provided.

Council On Academic Affairs Minutes, Nov 15, 2007, Eastern Kentucky University

Council on Academic Affairs

No abstract provided.

Ists E-Newsletter, November 15, 2007, Iowa Academy Of Science

ISTS Newsletter

In this issue:

--Message from the ISTS Chair, Traci Maxted

--Message from the Fall Conference Chair, Gale Vermeulen

--Message from the Vice Chair, Morgan Masters

--Observations of a Well-Seasoned Middle School Science Teacher

--Your ISTS Leadership Team

Harold Goes To Math Camp, Rainbow Shultz

Westview

No abstract provided.

Ay 07-08 Meeting 2007-11-15, Faculty Senate

Faculty Senate Minutes

No abstract provided.

Animal Health Matters, Russ Daly, Jane Hennings

Animal Health MATTERS Newsletter

[Page] 1- New Diagnostic/Research Faculty Bring Talents to SDSU, Dr. Diego Del, Dr. Joy Scaria [Page] 1- More New Hires to Start Soon at VBS Department [Page] 2- Director's Message: “One Health” and the Importance of Training the Next Generation of Scientists [Page] 3- Summary of BVDV-PI Testing at SDSU ADRDL [Page] 4- The Clinical Pathology Section at SDSU’s ADRDL [Page] 5- Governor Daugaard Pays Visit to the ADRDL Through Stethoscope Ceremony [Page] 6- New Hire: Dana Rausch, Molecular Diagnostics [Page] 6- ADRDL Bacteriologist Serves as President [Page] 6- Serology Staff Member Aids Custer State Park Bison Testing Efforts [Page] …

November 15, 2007, James Madison University

The Breeze, 2000-2009

The Breeze is the student newspaper of James Madison University in Harrisonburg, Virginia.

Selected Nsf Projects Of Interest To K-12 Engineering And Technology Education, Dan L. Householder

Engineering Education Faculty Publications

The National Science Foundation (NSF) portfolio addressing K-12 engineering and technology education includes initiatives supported by a number of programs. This list includes projects identified by searching lists of awards in the respective NSF programs as well as projects suggested for inclusion by researchers, practitioners, and program officers. The list includes projects concerned with standards in technology education, teacher professional development, centers for learning and teaching, preparation of instructional materials, digital libraries, and technological activities in informal settings, as well as small numbers of projects in several other areas. This compilation provides current information on projects of interest to educators, …

Discovery Of Platelet-Type 12-Human Lipoxygenase Selective Inhibitors By High-Throughput Screening Of Structurally Diverse Libraries., Joshua D. Deschamps, Jeffrey T. Gautschi, Stephanie Whitman, Tyler A. Johnson, Nadine C. Gassner, Phillip Crews, Theodore R. Holman

Natural Sciences and Mathematics | Faculty Scholarship

Human lipoxygenases (hLO) have been implicated in a variety of diseases and cancers and each hLO isozyme appears to have distinct roles in cellular biology. This fact emphasizes the need for discovering selective hLO inhibitors for both understanding the role of specific lipoxygenases in the cell and developing pharmaceutical therapeutics. To this end, we have modified a known lipoxygenase assay for high-throughput (HTP) screening of both the National Cancer Institute (NCI) and the UC Santa Cruz marine extract library (UCSC-MEL) in search of platelet-type 12-hLO (12-hLO) selective inhibitors. The HTP screen led to the characterization of five novel 12-hLO inhibitors …

R.I.T. News & Events - November 15, 2007, University News Services, Rochester Institute Of Technology

University Publications

Main features of this issue: Inauguration celebrates RITs legacy of leaders; RIT researcher studies deaths caused by marine emissions; Engineering student re-examines a career in the classroom; Library staff, athletes lend a hand to School #5; RIT scientists discovery featured in Nature; NTID partners with Sprint for youth outreach programs; RIT professor is master puzzle solver; New head for North Star Center; NTID receives $95K to host national summit; McGuinness-Clarke leads University Publications; RIT wraps up fall schedule

Supporting Flight Control For Uav-Assisted Wilderness Search And Rescue Through Human Centered Interface Design, Joseph L. Cooper

Theses and Dissertations

Inexpensive, rapidly deployable, camera-equipped Unmanned Aerial Vehicle (UAV) systems can potentially assist with a huge number of tasks. However, in many cases such as wilderness search and rescue (WiSAR), the potential users of the system may not be trained as pilots. Simple interface concepts can be used to build an interaction layer that allows an individual with minimal operator training to use the system to facilitate a search or inspection task. We describe an analysis of WiSAR as currently accomplished and show how a UAV system might fit into the existing structure. We then discuss preliminary system design efforts for …