| Insights Gained from the Dehalococcoides ethenogenes Strain 195's Transcriptome Responding to a Wide Range of Respiration Rates and Substrate Types |
Apr 2012 |
45 pages |
| Authors:
Cresten Manfeldt; Annette Rowe; Gretchen Heavner; Stephen Zinder; Ruth Richardson; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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 | Bacteria of the group Dehalococcoides display the ability to respire recalcitrant chlorinated organic compounds. Dehalococcoides strains' respiratory pathways and function of most genome-encoded enzymes responsible for dechlorination, reductive dehalogenases (RDases), remain incompletely annotated. To further the description of the biological organization of Dehalococcoides, this study monitored the trancriptomic response of Dehalococcoides ethenogenes stain 195 using two-color microarrays. This study analyzed the transcriptome of 23 varied continuous feed (or pseudo-steady state ... |
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| Systems Biology of Dehalococcoides: Using Network Inference Modeling to Integrate Omics Datasets Under Varied Conditions |
13 Jan 2012 |
10 pages |
| Authors:
Ruth Richardson; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| The overall objectives of this project were to 1. obtain a systems-biology level understanding of gene networks in the Dehalococcoides and 2. develop assays for quantitative biomarkers of chloroethene detoxification steps and rates that could be deployed at sites undergoing in situ bioremediation utilizing this important group of microbes. After collecting genome-wide microarray expression data along with metabolite and chloroethene data, under a wide range of conditions (n = 53), ... |
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| Distributed Information Processing for Battlespace Awareness: Ergodic and Non-Ergodic Interplay |
21 Oct 2011 |
3 pages |
| Authors:
Aaron B Wagner; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| The core of this project was devoted to distributed compression of multimodel (vector) sources and distributed compression for hypothesis testing. |
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| Maximum Likelihood Combining of Stochastic Maps |
Sep 2011 |
7 pages |
| Authors:
Brandon Jones; Mark Campbell; Lang Tong; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| The problem of combining stochastic maps obtained by independent agents is considered. Using generalized likelihood ratio statistics, the problem of matching triangles that correspond to common landmark observations in different stochastic maps is formulated as a bipartite matching problem with generalized likelihood ratio statistics. From the matched triangles between each map, the maximum likelihood combining of stochastic maps is generated. It is shown that the generalized likelihood ratio statistic and ... |
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| Cornell Workshop Series on Information Management in Service Oriented Applications |
JUN 2011 |
18 pages |
| Authors:
Kenneth Birman; Robert van Renesse; Daniel Freedman; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| The Cornell University Distributed Systems research group conducted a lecture series at the Air Force Research Laboratory Information Directorate (AFRL/RI) in Rome, NY. A total of eight half-day workshops on technologies for building robust cloud computing solutions were held at Rome Research Site. During these workshops, AF Research Laboratory and Cornell University participants, as well as attending vendors, engaged in a broad range of exchanges that helped prepare all involved ... |
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| High Performance Organic Transistors: Percolating Arrays of Nanotubes Functionalized with an Electron Deficient Olefin |
03 Apr 2011 |
7 pages |
| Authors:
George G Malliaras; Graciela B Blanchet; Mandakini Kanungo; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| Precise control over the electronic properties of the carbon nanotubes is key to their practical application in plastic electronics. In the present work, we have extended carbon nanotube functionalization via a 2-2 cycloaddition to electron withdrawing non-fluorinated olefins as well. Our results show that this is a fairly general approach, independent of specifics of the addend, to converting the grown mixture of metal and semiconductor tubes into high mobility semiconducting ... |
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| Polytope Codes Against Adversaries in Networks |
Jan 2010 |
8 pages |
| Authors:
Oliver Kosut; Lang Tong; David Tse; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| Network coding is studied when an unknown subset of nodes in the network is controlled by an adversary. To solve this problem, a new class of codes called Polytope Codes is introduced. Polytope Codes are linear codes operating over bounded polytopes in real vector fields. The polytope structure creates additional complexity, but it induces properties on marginal distributions of code vectors so that validities of codewords can be checked by ... |
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| Nexus Operating System for Trustworthy Computing |
Nov-2009 |
24 pages |
| Authors:
Fred Schneider; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| The NEXUS project investigated new abstractions for building trustworthy applications. A new operating system was built, as well as a secure version of BGP and a suite of document management applications. A authorization logic, called NAL, was also developed; it provides the means to specify authorization policies in operating systems and in applications. |
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| Network-Centric Distributed Signal Processing |
Sep 2009 |
11 pages |
| Authors:
Lang Tong; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| This project investigates distributed signal processing in the context of sensor enhanced mobile ad hoc networks. The objective of the project is twofold. First, the research aims to create a new framework for Network Centric Signal Processing that facilitates a joint design of communications, networking, and signal processing optimized for specific applications. Second, for sensor networks deployed for detection and estimation, this research develops new multiaccess communication strategies, networking protocols ... |
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| Terahertz Diode Development |
23-Mar-2009 |
24 pages |
| Authors:
Lester F Eastman; Quentin Diduck; Barbaros Aslan; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| The research efforts to develop a high-efficiency, moderate power THz device are discussed. The device structure is based upon the crystalline properties of GaN and its ability to handle large power and high fields. Physical device models were developed that include thermal and electrical simulations. Several device structures were produced in conjunction with the model development Initial negative differential conduction results from fabricated devices are presented as are the designs ... |
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| Towards Self-Powered Communication Networks |
01-Mar-2009 |
24 pages |
| Authors:
Alyssa Apsel; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| At the onset of this grant period, the PI proposed to conduct a study of hardware aware low power radio architectures and protocols. It had become increasingly clear that while the communications community had notable ideas for constructing networks of simple low power radios that could be used for ubiquitous sensing tasks, many of these ideas actually required the construction of high power radios. Moreover, the hardware and circuit design ... |
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| Security Risks from a Software Monoculture |
15 Nov 2008 |
21 pages |
| Authors:
Ken Birman; Fred Schneider; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| A workshop of experts was convened on October 30, 2007 to consider the trade-offs associated with platform homogeneity in complex distributed systems. There were 18 speakers from industry and academia, and an additional 7 observers from AFCIO and AFOSR. The conclusion was that deploying a monocultures would be an effective way to defend against configuration attacks, that artificial diversity could then defend against some technology attacks (which monocultures amplify), and ... |
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| Quantitative Study of the Effects of Chemical Additives in Propellant Flames |
02-Nov-2008 |
14 pages |
| Authors:
Terrill A Cool; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| This research addresses perceived needs of the U.S. Army in the development and use of biodiesel fuels and in the combustion chemistry of small cyclic nitramines. Studies are described of the chemistry of simple methyl and ethyl esters chosen as surrogates for the long chain mono-alkyl esters that are primary constituents of biodiesel fuels. The principal goal of these studies is the elucidation of the reaction mechanisms responsible for observed ... |
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| Destruction Chemistry of Mustard Simulants |
04-Jul-2008 |
37 pages |
| Authors:
J W Bozzelli; F C Gouldin; E M Fisher; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| This study investigates the destruction chemistry of organosulfur compounds under both pyrolytic and oxidative conditions. We focus on the destruction of alkyl sulfides that are surrogates for chemical warfare agents H, HD, and HT. We report our work on developing thermochemistry, reaction pathways and kinetic parameters for multiple chemical subsystems, using computational chemistry methods. We also report our experimental results from flow reactor experiments for pyrolysis and oxidation of two ... |
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| A Hybrid Computational-Experimental Framework for Microbial Chemical Synthesis via Enzyme Channeling |
05 DEC 2007 |
9 pages |
| Authors:
Matthew DeLisa; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| The immediate scientific objectives, which have changed significantly from our original proposal due to overlap with a pre-existing ONR YIP Award, include: (1) To engineer metabolic enzymes into functional multi-protein assemblies. We have explored the use of eukaryotic signaling scaffolds for in vivo enzyme assembly. [Note: the original proposal focused on using TGase-mediated enzymatic cross-linking to accomplish enzyme assembly]. The efficacy of these channels will be demonstrated for efficient metabolic ... |
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| Vortex-Induced Vibration: Universal Phenomena in Diverse Systems |
OCT 2007 |
14 pages |
| Authors:
Charles H. Williamson; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| The long-term goals of the research under this award have been to discover and understand generic phenomena in a whole class of vortex-induced vibration systems. We discover, using novel controlled damping, that the immense scatter in the classical Griffin plot (peak amplitude versus mass-damping) over 3 decades, can now be collapsed beautifully if one renormalises the axes, taking into account the effect of Reynolds number, which was previously not considered. ... |
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| Telescopic Imaging of Heater-Induced Airglow at HAARP |
JAN 2007 |
6 pages |
| Authors:
Michael C. Kelley; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| HF-induced fine-scale electron density variations and/or enhanced airglow in the ionosphere were investigated. These irregularities appear to trap waves and cause them to "self-focus." Knowing what irregularities exist is important for improving communications and for pure discovery research on wave-particle interactions in the lower ionosphere at high latitudes. To develop accurate models of its behavior, lower ionospheric structure must be known. Under this grant, we conducted telescopic imaging of heater-induced ... |
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| Novel Optical Interaction in Band-Gap Photonic Crystal Fibers |
31 MAY 2006 |
7 pages |
| Authors:
Gaeta; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| We have performed several experiments involving electromagnetically-induced transparency in acetylene including our studies of slow light in this system. In addition, near the end of the funding period, we have had recent success producing an appreciable density of Rb atoms into the fiber core. |
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| STM Studies of Semiconductor Qubit Candidates |
30 NOV 2005 |
13 pages |
| Authors:
J. C. Davis; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| We developed novel spectroscopic STM instruments for study of individual atom qubits. |
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| A Testbed for Highly-Scalable Mission Critical Information Systems |
20 JUN 2005 |
4 pages |
| Authors:
Kenneth P. Birman; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| This effort is building a new system for scalable distributed computing. The basic problem is common in GIG and NCES systems, where an acute need has arisen for simple tools to assist the developer of a distributed service that will be shared by huge numbers of client systems in a networked environment. Headed by Professor Ken Birman, the project is exploring a novel fusion of classical protocols for reliable multicast ... |
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| A Mechanical Loading/Synchrotron X-Ray Diffraction System for In-Situ Determination of Lattice Strains |
MAR 2005 |
9 pages |
| Authors:
Matthew Miller; Paul Dawson; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| A mechanical testing/synchrotron x-ray diffraction system was fabricated in this DURIP grant. The key elements of the system are a high frequency uniaxial loading machine, a precision diffractometer support Unit and an x-ray shutter (chopper). The system will be employed within synchrotron experimental facilities to measure lattice strains during cyclic deformation experiments as a means to understand the evolution of crystal stresses. |
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| Advanced Computational Techniques for the Design of Deformation Processes |
2000 |
22 pages |
| Authors:
Nicholas Zabaras; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| The objective of this work is to develop a continuum sensitivity finite element analysis for the robust design of multi-stage metal forming processes in aircraft manufacturing. The computational forming design simulator being developed is applied to industrial forming design and provides the means to select the sequence of deformation processes, design the dies and preforms for each process stage as well as the process conditions such that a product is ... |
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| Investigating the Amplitude and Phase Scintillations of New GPS Signals |
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2 pages |
| Authors:
Paul M Kintner; CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS
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| This is the final report for ONR grant N00014-07-1-0944 entitled, Investigating the amplitude and phase scintillations of new GPS signals. During the period of performance, we developed two software receivers, one of which can track the new L2C signal transmitted by GPS block IIRM satellites. We also modeled the effects of scintillation on GPS signals and developed a GPS signal simulation of the fades for testing receivers. |
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Reports by Corporate Author
