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Activation Of Propargylic Alcohols By Piano-Stool Ruthenium Complexes Bearing Phosphoramidite Ligands, Stephen Andrew Costin 2010 University of Missouri-St. Louis

Activation Of Propargylic Alcohols By Piano-Stool Ruthenium Complexes Bearing Phosphoramidite Ligands, Stephen Andrew Costin

Dissertations

Various piano-stool ruthenium complexes bearing phosphoramidite ligands have been synthesized and characterized spectroscopically and in some cases structurally. Reaction of phosphoramidite ligands with an appropriate metal precursor gives new piano-stool ruthenium complexes [RuCl(L)(arene)(phosphoramidite)], where L = Cl, PPh3, or others. The novel complexes are tested for their ability to activate propargylic alcohols catalytically as well as stoichiometrically. Specifically, catalytic substitution of propargylic alcohols via allenylidene intermediates is envisioned. Stoichiometric reactions designed to form stable, isolable allenylidenes are sought as well. h6-p-cymene complexes of the type [RuCl2(h6-p-cymene)(phosphoramidite)] activate propargylic alcohols in the reaction with carboxylic acids to ...


Evaluation Of Four Water Management Policies For Ogallala Aquifer Sustainability In The Texas High Plains, J. Hernandez, P. Gowda, T. Howell, T. Marek, W. Ha, L. Almas 2010 Conservation and Production Research Laboratory

Evaluation Of Four Water Management Policies For Ogallala Aquifer Sustainability In The Texas High Plains, J. Hernandez, P. Gowda, T. Howell, T. Marek, W. Ha, L. Almas

Jairo E. Hernández

Diminishing groundwater supply in the Ogallala Aquifer will severely reduce regional crop and animal production in the absence of a sustainable water management policy. It is essential to mitigate adverse impacts on the regional economy due to future withdrawals of the limited groundwater resource. Currently, approximately ten alternative water management policies are being debated by policy makers in the Central and Southern High Plains of the Ogallala Aquifer region. Before implementing any new policy or modifying current policies, newer alternative policies should be evaluated for their impact on groundwater levels with eventual extension to regional economic impacts. The main objective ...


Nanoparticle Doped Photopolymer With Reduced Shrinkage For Holographic Recording, Mohesh Moothanchery, Svetlana Mintova, Izabela Naydenova, Vincent Toal 2010 Dublin Institute of Technology

Nanoparticle Doped Photopolymer With Reduced Shrinkage For Holographic Recording, Mohesh Moothanchery, Svetlana Mintova, Izabela Naydenova, Vincent Toal

Conference Papers

We demonstrate holographic recording with Si-MFI zeolite doped acrylamide based photopolymerfilm. The influence of silicate nanoparticles on photopolymer shrinkage has been studied and compared withshrinkage in undoped photopolymer layers The shrinkage of the material (1.03%) is significantly lower forrecording in Si-MFI zeolite nanoparticle doped samples than for undoped layers (1.77%).


Energy Balanced Routing Strategy In Wireless Sensor Networks, Xiaoguang Zhang, Zheng da Wu 2010 Bond University

Energy Balanced Routing Strategy In Wireless Sensor Networks, Xiaoguang Zhang, Zheng Da Wu

Information Technology papers

In order to tackle the energy hole problem of sensor networks, the non-uniform node deployment strategy was presented recently. For achieving the expected performance of this deployment method, nodes need to transmit data to the sink node through selecting a node in the adjacent inner-region decided by the deployment strategy. Since nodes near the outerboundary of a region will be covered by more nodes, the random selection method will cause the unbalanced energy consumption problem. In this paper, this issue is rigorously studied and a region constrained selection scheme is proposed based on the analytical result. Numerical and simulation results ...


Sources Of The Radio Background Considered, Jack Singal, L. Stawarz, A. Lawrence, V. Petrosian 2010 University of Richmond

Sources Of The Radio Background Considered, Jack Singal, L. Stawarz, A. Lawrence, V. Petrosian

Physics Faculty Publications

We investigate different scenarios for the origin of the extragalactic radio background. The surface brightness of the background, as reported by the Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission 2 (ARCADE 2) collaboration, is several times higher than that which would result from currently observed radio sources. We consider contributions to the background from diffuse synchrotron emission from clusters and the intergalactic medium, previously unrecognized flux from low-surface-brightness regions of radio sources and faint point sources below the flux limit of existing surveys. By examining radio source counts available in the literature, we conclude that most of the radio ...


Preventing Computer Identity Theft, Donald R. McDaniel 2010 Regis University

Preventing Computer Identity Theft, Donald R. Mcdaniel

All Regis University Theses

The arrival of the information age has created new challenges to the ability of individuals to protect the security and privacy of their personal information. One such challenge is that of identity theft, which has caused a number of hardships upon its victims. Perpetrators of this fraud may use identities of others to obtain loans, steal money, and violate the law. This paper will discuss the characteristics of the offenders and victims of identity theft. A systematic approach for preventing identity theft will also be presented with the hopes of curtailing this epidemic.


Energy Balanced Routing Strategy In Wireless Sensor Networks, Xiaoguang Zhang, Zheng da Wu 2010 Bond University

Energy Balanced Routing Strategy In Wireless Sensor Networks, Xiaoguang Zhang, Zheng Da Wu

Zheng da Wu

In order to tackle the energy hole problem of sensor networks, the non-uniform node deployment strategy was presented recently. For achieving the expected performance of this deployment method, nodes need to transmit data to the sink node through selecting a node in the adjacent inner-region decided by the deployment strategy. Since nodes near the outerboundary of a region will be covered by more nodes, the random selection method will cause the unbalanced energy consumption problem. In this paper, this issue is rigorously studied and a region constrained selection scheme is proposed based on the analytical result. Numerical and simulation results ...


Fast Query Processing By Distributing An Index Over Cpu Caches, Xiaoqin Ma, Gene Cooperman 2010 Northeastern University

Fast Query Processing By Distributing An Index Over Cpu Caches, Xiaoqin Ma, Gene Cooperman

Gene D. Cooperman

Data intensive applications on clusters often require requests quickly be sent to the node managing the desired data. In many applications, one must look through a sorted tree structure to determine the responsible node for accessing or storing the data. Examples include object tracking in sensor networks, packet routing over the internet, request processing in publish-subscribe middleware, and query processing in database systems. When the tree structure is larger than the CPU cache, the standard implementation potentially incurs many cache misses for each lookup; one cache miss at each successive level of the tree. As the CPURAM gap grows, this ...


End Of Year Report : Fy 2005, Gene Cooperman 2010 Northeastern University

End Of Year Report : Fy 2005, Gene Cooperman

Gene D. Cooperman

No abstract provided.


Air Shower Simulation Using Geant4 And Commodity Parallel Computing, L. Anchordoqui, G. Cooperman, V. Grinberg, T. McCauley, T. Paul, S. Reucroft, J. Swain, G. Alverson 2010 Northeastern University

Air Shower Simulation Using Geant4 And Commodity Parallel Computing, L. Anchordoqui, G. Cooperman, V. Grinberg, T. Mccauley, T. Paul, S. Reucroft, J. Swain, G. Alverson

Gene D. Cooperman

We present an evaluation of a simulated cosmic ray shower, based on GEANT4 and TOP-C, which tracks all the particles in the shower. TOP-C (Task Oriented Parallel C) provides a framework for parallel algorithm development which makes tractable the problem of following each particle. This method is compared with a simulation program which employs the Hillas thinning algorithm.


Geant4 Developments And Applications, J. Allison, K. Amako, J. Apostolakis, H. Araujo, P. Arce Dubois, M. Asai, G. Barrand, R. Capra, S. Chauvie, R. Chytracek, G. Cirrone, Gene Cooperman, G. Cosmo, G. Cuttone, G. Daquino, M. Donszelmann, M. Dressel, G. Folger, F. Foppiano, J. Generowicz, V. Grichine, S. Guatelli, P. Gumplinger, A. Heikkinen, I. Hrivnacova, A. Howard, S. Incerti, V. Ivanchenko, T. Johnson, F. Jones, T. Koi, R. Kokoulin, M. Kossov, H. Kurashige, V. Lara, S. Larsson, F. Lei, O. Link, F. Longo, M. Maire, A. Mantero, B. Mascialino, I. McLaren, P. Mendez Lorenzo, K. Minamimoto, K. Murakami, P. Nieminen, L. Pandola, S. Parlati, L. Peralta, J. Perl, A. Pfeiffer, M. Pia, A. Ribon, P. Rodrigues, G. Russo, S. Sadilov, G. Santin, T. Sasaki, D. Smith, N. Starkov, S. Tanaka, E. Tcherniaev, B. Tomé, A. Trindade, P. Truscott, L. Urban, M. Verderi, A. Walkden, J. Wellisch, D. Williams, D. Wright, H. Yoshida 2010 Northeastern University

Geant4 Developments And Applications, J. Allison, K. Amako, J. Apostolakis, H. Araujo, P. Arce Dubois, M. Asai, G. Barrand, R. Capra, S. Chauvie, R. Chytracek, G. Cirrone, Gene Cooperman, G. Cosmo, G. Cuttone, G. Daquino, M. Donszelmann, M. Dressel, G. Folger, F. Foppiano, J. Generowicz, V. Grichine, S. Guatelli, P. Gumplinger, A. Heikkinen, I. Hrivnacova, A. Howard, S. Incerti, V. Ivanchenko, T. Johnson, F. Jones, T. Koi, R. Kokoulin, M. Kossov, H. Kurashige, V. Lara, S. Larsson, F. Lei, O. Link, F. Longo, M. Maire, A. Mantero, B. Mascialino, I. Mclaren, P. Mendez Lorenzo, K. Minamimoto, K. Murakami, P. Nieminen, L. Pandola, S. Parlati, L. Peralta, J. Perl, A. Pfeiffer, M. Pia, A. Ribon, P. Rodrigues, G. Russo, S. Sadilov, G. Santin, T. Sasaki, D. Smith, N. Starkov, S. Tanaka, E. Tcherniaev, B. Tomé, A. Trindade, P. Truscott, L. Urban, M. Verderi, A. Walkden, J. Wellisch, D. Williams, D. Wright, H. Yoshida

Gene D. Cooperman

Geant4 is a software toolkit for the simulation of the passage of particles through matter. It is used by a large number of experiments and projects in a variety of application domains, including high energy physics, astrophysics and space science, medical physics and radiation protection. Its functionality and modeling capabilities continue to be extended, while its performance is enhanced. An overview of recent developments in diverse areas of the toolkit is presented. These include performance optimization for complex setups; improvements for the propagation in fields; new options for event biasing; and additions and improvements in geometry, physics processes and interactive ...


Adaptive Checkpointing For Master-Worker Style Parallelism (Extended Abstract), Gene Cooperman, Jason Ansel, Xiaoqin Ma 2010 Northeastern University

Adaptive Checkpointing For Master-Worker Style Parallelism (Extended Abstract), Gene Cooperman, Jason Ansel, Xiaoqin Ma

Gene D. Cooperman

No abstract provided.


Dmtcp: Transparent Checkpointing For Cluster Computations And The Desktop, Jason Ansel, Kapil Arya, Gene Cooperman 2010 Massachusetts Institute of Technology

Dmtcp: Transparent Checkpointing For Cluster Computations And The Desktop, Jason Ansel, Kapil Arya, Gene Cooperman

Gene D. Cooperman

DMTCP (Distributed MultiThreaded CheckPointing) is a transparent user-level checkpointing package for distributed applications. Checkpointing and restart is demonstrated for a wide range of over 20 well known applications, including MATLAB, Python, TightVNC, MPICH2, OpenMPI, and runCMS. RunCMS runs as a 680 MB image in memory that includes 540 dynamic libraries, and is used for the CMS experiment of the Large Hadron Collider at CERN. DMTCP transparently checkpoints general cluster computations consisting of many nodes, processes, and threads; as well as typical desktop applications. On 128 distributed cores (32 nodes), checkpoint and restart times are typically 2 seconds, with negligible run-time ...


End Of Year Report : Fy 2004, Gene Cooperman 2010 Northeastern University

End Of Year Report : Fy 2004, Gene Cooperman

Gene D. Cooperman

No abstract provided.


Principles Of Constructive Provability Logic (Cmu-Cs-10-151), Robert J. Simmons, Bernardo Toninho 2010 Carnegie Mellon University

Principles Of Constructive Provability Logic (Cmu-Cs-10-151), Robert J. Simmons, Bernardo Toninho

Computer Science Department

We present a novel formulation of the modal logic CPL, a constructive logic of provability that is closely connected to the Godel-L ¨ ob logic of provability. Our logical formulation allows modal ¨ operators to talk about both provability and non-provability of propositions at reachable worlds. We are interested in the applications of CPL to logic programming; however, this report focuses on the presentation of a minimal fragment (in the sense of minimal logic) of CPL and on the formalization of minimal CPL and its metatheory in the Agda programming language. We present both a natural deduction system and a sequent calculus ...


Notes On The Schur Complement, Jean H. Gallier 2010 University of Pennsylvania

Notes On The Schur Complement, Jean H. Gallier

Departmental Papers (CIS)

No abstract provided.


Caché: Caching Location-Enhanced Content To Improve User Privacy (Cmu-Cylab-10-019), Shahriyar Amini, Janne Lindqvist, Jason Hong, Jialiu Lin, Eran Toch, Norman Sadeh 2010 Carnegie Mellon University

Caché: Caching Location-Enhanced Content To Improve User Privacy (Cmu-Cylab-10-019), Shahriyar Amini, Janne Lindqvist, Jason Hong, Jialiu Lin, Eran Toch, Norman Sadeh

CyLab

We present the design, implementation, and evaluation of Caché, a system that offers location privacy for certain classes of location-based applications. The core idea in Caché is to periodically pre-fetch potentially useful location-enhanced content well in advance. Applications then retrieve content from a local cache on the mobile device when it is needed. This approach allows the end-user to make use of locationenhanced content while only revealing to third-party content providers what geographic region she is in rather than her precise location. In this paper, we present an analysis that examines tradeoffs in terms of storage, bandwidth, and freshness of ...


Gene Network Inference And Expression Prediction Using Recurrent Neural Networks And Evolutionary Algorithms, Heather Y. Chan 2010 Brigham Young University - Provo

Gene Network Inference And Expression Prediction Using Recurrent Neural Networks And Evolutionary Algorithms, Heather Y. Chan

All Theses and Dissertations

We demonstrate the success of recurrent neural networks in gene network inference and expression prediction using a hybrid of particle swarm optimization and differential evolution to overcome the classic obstacle of local minima in training recurrent neural networks. We also provide an improved validation framework for the evaluation of genetic network modeling systems that will result in better generalization and long-term prediction capability. Success in the modeling of gene regulation and prediction of gene expression will lead to more rapid discovery and development of therapeutic medicine, earlier diagnosis and treatment of adverse conditions, and vast advancements in life science research.


Late 20th Century Hydrologic Change In Western North America: Regional Impacts And The Role Of Climate, Shaleen Jain 2010 Principal Investigator; University of Maine, Orono

Late 20th Century Hydrologic Change In Western North America: Regional Impacts And The Role Of Climate, Shaleen Jain

University of Maine Office of Research and Sponsored Programs: Grant Reports

Hydroclimatic variations and change directly impact the freshwater supplies in western North America. Streamflow in this region has shown increased variability of annual flow volumes and increasing synchroneity in the largest basins in the west towards the end of last century. As land-use change seems to play a lesser role, the PI will study the sensitivity of the western North American winter precipitation and related streamflow to El Nino-Southern Oscillation variations. The PI will use observations and multi-model ensemble integrations to study the decadal variations. The broader impact of this project will be an increase of the scientific knowledge required ...


First Order Analysis Of Nitrate Loading In The Upper Elbe River Basin, Czech Republic, Daniel J. Ritter 2010 Brigham Young University - Provo

First Order Analysis Of Nitrate Loading In The Upper Elbe River Basin, Czech Republic, Daniel J. Ritter

All Theses and Dissertations

Nitrate contamination of water is a worldwide issue. Nitrate is especially dangerous for young children, and may result in potentially fatal blue baby syndrome when concentration in drinking water is > 10 mg/L N-NO3. Nitrate in surface water may also lead to eutrophication. Sources of NO3- contamination include nitrate fertilizers, wastewater treatment plants, individual domestic septic systems, runoff from animal feedlots, and natural soil nitrogen. Nitrate contamination in the Elbe River drainage, covering 148,270 km2 in Germany and the Czech Republic, has been a long-term issue. This study examines the upper one-third of the basin, located almost entirely in ...


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