Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Purdue University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1081 - 1110 of 2813

Full-Text Articles in Physical Sciences and Mathematics

Foreword For The Special Issue Of Selected Papers From The 1st Acm Sigspatial Workshop On Security And Privacy In Gis And Lbs, Elisa Bertino, Maria Luisa Damiani Jan 2009

Foreword For The Special Issue Of Selected Papers From The 1st Acm Sigspatial Workshop On Security And Privacy In Gis And Lbs, Elisa Bertino, Maria Luisa Damiani

Cyber Center Publications

The first Workshop on Security and Privacy in GIS and LBS (SPRINGL 2008) was organized on November 4, 2008 at Irvine (CA) in conjunction with the SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM GIS 2008). The goal of the SPRINGL workshop series is to provide a forum for researchers working in the area of geospatial data security and privacy. Both security and privacy are critical for geospatial applications because of the dramatic increase and dissemination of geospatial data in several application contexts including homeland security, environmental crises, and natural and industrial disasters. Furthermore, geospatial infrastructures are being …


Location Privacy In Moving-Object Environments, Dan Lin, Elisa Bertino, Reynold Cheng, Sunil Prabhakar Jan 2009

Location Privacy In Moving-Object Environments, Dan Lin, Elisa Bertino, Reynold Cheng, Sunil Prabhakar

Cyber Center Publications

The expanding use of location-based services has profound implications on the privacy of personal information. If no adequate protection is adopted, information about movements of specific individuals could be disclosed to unauthorized subjects or organizations, thus resulting in privacy breaches. In this paper, we propose a framework for preserving location privacy in moving-object environments. Our approach is based on the idea of sending to the service provider suitably modified location information. Such modifications, that include transformations like scaling, are performed by agents interposed between users and service providers. Agents execute data transformation and the service provider directly processes the transformed …


Application Of 3d Zernike Descriptors To Shape-Based Ligand Similarity Searching, Vishwesh Venkatraman, Padmasini Ramji Chakravarthy, Daisuke Kihara Jan 2009

Application Of 3d Zernike Descriptors To Shape-Based Ligand Similarity Searching, Vishwesh Venkatraman, Padmasini Ramji Chakravarthy, Daisuke Kihara

Department of Biological Sciences Faculty Publications

Background

The identification of promising drug leads from a large database of compounds is an important step in the preliminary stages of drug design. Although shape is known to play a key role in the molecular recognition process, its application to virtual screening poses significant hurdles both in terms of the encoding scheme and speed.

Results

In this study, we have examined the efficacy of the alignment independent three-dimensional Zernike descriptor (3DZD) for fast shape based similarity searching. Performance of this approach was compared with several other methods including the statistical moments based ultrafast shape recognition scheme (USR) and SIMCOMP, …


Energy-Efficient Peer-To-Peer Caching And Mobility Management In 4g Hybrid Networks, Mehdi Azami, Bharat Bhargava Dec 2008

Energy-Efficient Peer-To-Peer Caching And Mobility Management In 4g Hybrid Networks, Mehdi Azami, Bharat Bhargava

Department of Computer Science Technical Reports

No abstract provided.


Practical Strengthening Of Preconditions, Ashish Kundu, Patrick Eugster Nov 2008

Practical Strengthening Of Preconditions, Ashish Kundu, Patrick Eugster

Department of Computer Science Technical Reports

No abstract provided.


Modeling Of Spin Metal-Oxide-Semiconductor Field-Effect Transistor: A Nonequilibrium Green’S Function Approach With Spin Relaxation, Tony Low, Mark Lundstrom, Dmitri Nikonov Nov 2008

Modeling Of Spin Metal-Oxide-Semiconductor Field-Effect Transistor: A Nonequilibrium Green’S Function Approach With Spin Relaxation, Tony Low, Mark Lundstrom, Dmitri Nikonov

Birck and NCN Publications

A spin metal-oxide-semiconductor field-effect transistor (spin MOSFET), which combines a Schottky-barrier MOSFET with ferromagnetic source and drain contacts, is a promising device for spintronic logic. Previous simulation studies predict that this device should display a very high magnetoresistance (MR) ratio (between the cases of parallel and antiparallel magnetizations) for the case of half-metal ferromagnets (HMF). We use the nonequilibrium Green’s function formalism to describe tunneling and carrier transport in this device and to incorporate spin relaxation at the HMF-semiconductor interfaces. Spin relaxation at interfaces results in nonideal spin injection. Minority spin currents arise and dominate the leakage current for antiparallel …


Transcriptome Analysis Identifies Novel Responses And Potential Regulatory Genes Involved In Seasonal Dormancy Transitions Of Leafy Spurge (Euphorbia Esula L.), David P. Horvath, Wun S. Chao, Jeffrey C. Suttle, Jyothi Thimmapuram, James V. Anderson Nov 2008

Transcriptome Analysis Identifies Novel Responses And Potential Regulatory Genes Involved In Seasonal Dormancy Transitions Of Leafy Spurge (Euphorbia Esula L.), David P. Horvath, Wun S. Chao, Jeffrey C. Suttle, Jyothi Thimmapuram, James V. Anderson

Cyber Center Publications

Dormancy of buds is a critical developmental process that allows perennial plants to survive extreme seasonal variations in climate. Dormancy transitions in underground crown buds of the model herbaceous perennial weed leafy spurge were investigated using a 23 K element cDNA microarray. These data represent the first large-scale transcriptome analysis of dormancy in underground buds of an herbaceous perennial species. Crown buds collected monthly from August through December, over a five year period, were used to monitor the changes in the transcriptome during dormancy transitions.


Chameleon: Context-Awareness Inside Dbmss, Hicham G. Elmongui, Walid G. Aref, Mohamed F. Mokbel Oct 2008

Chameleon: Context-Awareness Inside Dbmss, Hicham G. Elmongui, Walid G. Aref, Mohamed F. Mokbel

Department of Computer Science Technical Reports

No abstract provided.


Exceptionally Safe Futures, Armand Navabi, Suresh Jagannathan Oct 2008

Exceptionally Safe Futures, Armand Navabi, Suresh Jagannathan

Department of Computer Science Technical Reports

No abstract provided.


Record Linkage Based On Entities' Behavior, Mohamed Yakout, Ahmed K. Elmagarmid, Hazen Elmeleegy, Mourad Ouzzani Oct 2008

Record Linkage Based On Entities' Behavior, Mohamed Yakout, Ahmed K. Elmagarmid, Hazen Elmeleegy, Mourad Ouzzani

Department of Computer Science Technical Reports

No abstract provided.


Development And Annotation Of Perennial Triticeae Ests And Ssr Markers., B.S. Bushman, S R Larson, I W Mott, P F Cliften, R R Wang, N J Chatterton, A G Hernandez, S Ali, R W Kim, Jyothi Thimmapuram, G Gong, L Liu, M A Mikel Oct 2008

Development And Annotation Of Perennial Triticeae Ests And Ssr Markers., B.S. Bushman, S R Larson, I W Mott, P F Cliften, R R Wang, N J Chatterton, A G Hernandez, S Ali, R W Kim, Jyothi Thimmapuram, G Gong, L Liu, M A Mikel

Cyber Center Publications

Triticeae contains hundreds of species of both annual and perennial types. Although substantial genomic tools are available for annual Triticeae cereals such as wheat and barley, the perennial Triticeae lack sufficient genomic resources for genetic mapping or diversity research. To increase the amount of sequence information available in the perennial Triticeae, three expressed sequence tag (EST) libraries were developed and annotated for Pseudoroegneria spicata, a mixture of both Elymus wawawaiensis and E. lanceolatus, and a Leymus cinereus x L. triticoides interspecific hybrid. The ESTs were combined into unigene sets of 8 780 unigenes for P. spicata, 11 281 unigenes for …


Preserving Privacy And Fairness In Peer Data Management Systems, Hazen Elmeleegy, Ahmed Abusalah, Mourad Ouzzani, Ahmed K. Elmagarmid Oct 2008

Preserving Privacy And Fairness In Peer Data Management Systems, Hazen Elmeleegy, Ahmed Abusalah, Mourad Ouzzani, Ahmed K. Elmagarmid

Department of Computer Science Technical Reports

No abstract provided.


T-Plausibility: Semantic Preserving Text Sanitization, Wei Jiang, Mummoorthy Murugesan, Chris Clifton, Luo Si Sep 2008

T-Plausibility: Semantic Preserving Text Sanitization, Wei Jiang, Mummoorthy Murugesan, Chris Clifton, Luo Si

Department of Computer Science Technical Reports

No abstract provided.


Proactive Role Discovery In Mediator-Free Environments, Mohamed Shehab, Elisa Bertino, Arif Ghafoor Sep 2008

Proactive Role Discovery In Mediator-Free Environments, Mohamed Shehab, Elisa Bertino, Arif Ghafoor

Cyber Center Publications

The rapid proliferation of Internet and related technologies has created tremendous possibilities for the interoperability between domains in distributed environments. Interoperability does not come easy at it opens the way for several security and privacy breaches. In this paper, we focus on the distributed authorization discovery problem that is crucial to enable secure inter- operability. We present a distributed access path discovery framework that does not require a centralized mediator. We propose and verify a role routing protocol that propagates secure, minimal-length paths to reachable roles in other domains. Finally, we present experimental results of our role routing protocol based …


A Framework For Efficient Class-Based Sampling, Mohit Saxena, Ramana Rao Kompella Sep 2008

A Framework For Efficient Class-Based Sampling, Mohit Saxena, Ramana Rao Kompella

Department of Computer Science Technical Reports

No abstract provided.


Automatic Failure Inducing Chain Computation Through Aligned Execution Comparison, William N. Sumner, Xiangyu Zhang Sep 2008

Automatic Failure Inducing Chain Computation Through Aligned Execution Comparison, William N. Sumner, Xiangyu Zhang

Department of Computer Science Technical Reports

No abstract provided.


The Decay Rate Of The Solution To A Tridiagonal Linear System With A Very Special Right Hand Side, Carl Christian Kjelgaard Mikkelsen Aug 2008

The Decay Rate Of The Solution To A Tridiagonal Linear System With A Very Special Right Hand Side, Carl Christian Kjelgaard Mikkelsen

Department of Computer Science Technical Reports

No abstract provided.


Incremental Mining For Frequent Patterns In Evolving Time Series Datatabases, Mohamed Y. Eltabakh, Mourad Ouzzani, Mohamed A. Khalil, Walid G. Aref, Ahmed K. Elmagarmid Jul 2008

Incremental Mining For Frequent Patterns In Evolving Time Series Datatabases, Mohamed Y. Eltabakh, Mourad Ouzzani, Mohamed A. Khalil, Walid G. Aref, Ahmed K. Elmagarmid

Department of Computer Science Technical Reports

No abstract provided.


Ajaxtracker: A Tool For High Fidelity Characterization Of Ajax Applications, Myungjin Lee, Sumeet Singh, Ramana Rao Kompella Jul 2008

Ajaxtracker: A Tool For High Fidelity Characterization Of Ajax Applications, Myungjin Lee, Sumeet Singh, Ramana Rao Kompella

Department of Computer Science Technical Reports

No abstract provided.


Self-Tuning Query Mesh For Adaptive Multi-Route Query Processing, Rimma V. Nehme, Elke A. Rundersteiner, Elisa Bertino Jul 2008

Self-Tuning Query Mesh For Adaptive Multi-Route Query Processing, Rimma V. Nehme, Elke A. Rundersteiner, Elisa Bertino

Department of Computer Science Technical Reports

No abstract provided.


Fibonacci Modeling Of Malware Propagation, Yu Zhang, Bharat Bhargava Jun 2008

Fibonacci Modeling Of Malware Propagation, Yu Zhang, Bharat Bhargava

Department of Computer Science Technical Reports

No abstract provided.


Genes Controlling Plant Growth Habit In Leymus (Triticeae): Maize Barren Stalk1 (Ba1), Rice Lax Panicle, And Wheat Tiller Inhibition (Tin3) Genes As Possible Candidates., Paraminder Kaur, Steven R. Larson, B.S. Bushman, Richard R. Wang, Ivan W. Mott, Jyothi Thimmapuram, George Gong, Lei Liu Jun 2008

Genes Controlling Plant Growth Habit In Leymus (Triticeae): Maize Barren Stalk1 (Ba1), Rice Lax Panicle, And Wheat Tiller Inhibition (Tin3) Genes As Possible Candidates., Paraminder Kaur, Steven R. Larson, B.S. Bushman, Richard R. Wang, Ivan W. Mott, Jyothi Thimmapuram, George Gong, Lei Liu

Cyber Center Publications

Leymus cinereus and L. triticoides are large caespitose and rhizomatous perennial grasses, respectively. Previous studies detected quantitative trait loci (QTL) controlling rhizome spreading near the viviparous1 (vp1) gene markers on linkage groups LG3a and LG3b in two families, TTC1 and TTC2, derived from Leymus triticoides x Leymus cinereus hybrids. The wheat tiller inhibition gene (tin3) is located on Triticum monococcum chromosome 3 A(m)L near vp1. Triticeae group 3 is reportedly collinear with rice chromosome 1, which also contains the maize barren stalk1 and rice lax branching orthogene near vp1. However, previous studies lacked cross-species markers for comparative mapping and showed …


Towards Trajectory Anonymization: A Generalization-Based Approach, Mehmet Ercan Nergiz, Maurizo Atzori, Yucel Saygin Jun 2008

Towards Trajectory Anonymization: A Generalization-Based Approach, Mehmet Ercan Nergiz, Maurizo Atzori, Yucel Saygin

Department of Computer Science Technical Reports

No abstract provided.


S-Presence Without Complete World Knlowedge, M. Ercan Nergiz, Chris Clifton Jun 2008

S-Presence Without Complete World Knlowedge, M. Ercan Nergiz, Chris Clifton

Department of Computer Science Technical Reports

No abstract provided.


Secure High-Throughput Multicast Routing In Wireless Mesh Networks, Jing Dong, Reza Burtmola, Cristina Nita-Rotaru May 2008

Secure High-Throughput Multicast Routing In Wireless Mesh Networks, Jing Dong, Reza Burtmola, Cristina Nita-Rotaru

Department of Computer Science Technical Reports

No abstract provided.


Quality Of Monitoring Of Stochastic Events By Proportional-Share Mobile Sensor Coverage, David K.Y. Yau, Nung Kwan Yip, Chris Y. T. Ma, Nageswara S. Rao, Mallikarjun Shankar May 2008

Quality Of Monitoring Of Stochastic Events By Proportional-Share Mobile Sensor Coverage, David K.Y. Yau, Nung Kwan Yip, Chris Y. T. Ma, Nageswara S. Rao, Mallikarjun Shankar

Department of Computer Science Technical Reports

No abstract provided.


Accurate Localization Of Low-Level Radioactive Source Under Noise And Measurement Errors, Jren-Chit Chin, David K.Y. Yau, Nageswara S. V. Rao, Yong Yang, Chris Y.T. Ma May 2008

Accurate Localization Of Low-Level Radioactive Source Under Noise And Measurement Errors, Jren-Chit Chin, David K.Y. Yau, Nageswara S. V. Rao, Yong Yang, Chris Y.T. Ma

Department of Computer Science Technical Reports

No abstract provided.


The Draft Genome Of The Transgenic Tropical Fruit Tree Papaya ( Carica Papaya Linnaeus), Ray Ming, Shaobin Hou, Yun Feng, Qinguyi Yu, Jyothi Thimmapuram Apr 2008

The Draft Genome Of The Transgenic Tropical Fruit Tree Papaya ( Carica Papaya Linnaeus), Ray Ming, Shaobin Hou, Yun Feng, Qinguyi Yu, Jyothi Thimmapuram

Cyber Center Publications

Papaya, a fruit crop cultivated in tropical and subtropical regions, is known for its nutritional benefits and medicinal applications. Here we report a 3 draft genome sequence of 'SunUp' papaya, the first commercial virus-resistant transgenic fruit tree1 to be sequenced. The papaya genome is three times the size of the Arabidopsis genome, but contains fewer genes, including significantly fewer disease-resistance gene analogues. Comparison of the five sequenced genomes suggests a minimal angiosperm gene set of 13,311. A lack of recent genome duplication, atypical of other angiosperm genomes sequenced so far may account for the smaller papaya gene number in …


Query Mesh: An Efficient Multi-Route Approach To Query Optimization, Rimma V. Nehme, Karen Works, Elke A. Rundensteiner, Elisa Bertino Mar 2008

Query Mesh: An Efficient Multi-Route Approach To Query Optimization, Rimma V. Nehme, Karen Works, Elke A. Rundensteiner, Elisa Bertino

Department of Computer Science Technical Reports

No abstract provided.


Elimination Of Subjectivity From Trust Recommendation, Omas Hasan, Lionel Brunie, Jean-Marc Pierson, Elisa Bertino Mar 2008

Elimination Of Subjectivity From Trust Recommendation, Omas Hasan, Lionel Brunie, Jean-Marc Pierson, Elisa Bertino

Department of Computer Science Technical Reports

No abstract provided.