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Articles 5491 - 5520 of 8614
Full-Text Articles in Entire DC Network
The Sbc-Tree: An Index For Run-Length Compressed Sequences, Mohamed Y. Eltabakh, Wing-Kai Hon, Rahul Shah, Walid G. Aref, Jeffrey S. Vitter
The Sbc-Tree: An Index For Run-Length Compressed Sequences, Mohamed Y. Eltabakh, Wing-Kai Hon, Rahul Shah, Walid G. Aref, Jeffrey S. Vitter
Department of Computer Science Technical Reports
No abstract provided.
Scaling Byzantine Fault-Tolerant Replication To Wide Area Networks, Yair Amir, Claudiu Danilov, Danny Dolev, Jonathan Kirsch, John Lane, Josh Olsen, David Zage
Scaling Byzantine Fault-Tolerant Replication To Wide Area Networks, Yair Amir, Claudiu Danilov, Danny Dolev, Jonathan Kirsch, John Lane, Josh Olsen, David Zage
Department of Computer Science Technical Reports
No abstract provided.
An Analysis Of Websites Of Bi-National Heterosexual Couples, Sadashivam Rao
An Analysis Of Websites Of Bi-National Heterosexual Couples, Sadashivam Rao
CLCWeb: Comparative Literature and Culture
In his paper "An Analysis of Websites of Bi-national Heterosexual Couples," Sadashivam Rao discusses the design of world wide web homepages of bi-national couples. Rao shows how such websites become locations of the re-invention of notions of culture, generating a particular practice of representation, namely that of "hyphenating." Rao contends that the subjects of personal homepages enter the domain of the internet as entities already embedded in many other domains of discourse such as those of nationalism, culture, and media. Further, Rao proposes that this specific genre of websites reflects traces of these discourses. Of course, in the process of …
Stabilizers: Safe Lightweight Check- Pointing For Concurrent Programs, Lukasz Ziarek, Philip Schatz, Suresh Jagannathan
Stabilizers: Safe Lightweight Check- Pointing For Concurrent Programs, Lukasz Ziarek, Philip Schatz, Suresh Jagannathan
Department of Computer Science Technical Reports
No abstract provided.
2005 Indiana County Highway Departments Bridge Replacement Cost Estimation Procedures, Indiana Ltap
2005 Indiana County Highway Departments Bridge Replacement Cost Estimation Procedures, Indiana Ltap
Indiana Local Technical Assistance Program (LTAP) Publications
This report is intended to provide county bridge officials a simple, straight forward method to estimate the costs of replacing county bridges. The report uses information from bridges constructed from 1997 through 2005, which was obtained through surveys completed by Indiana counties. Regressions were performed on the data and a spreadsheet prepared that allows users to input Average Daily Traffic (ADT) and the old bridge length to obtain an estimate for the cost of a replacement bridge.
Automated Adaptive Intrusion Containment In Systems Of Interacting Services, Yu-Sung Wu, Bingrui Foo, Yu-Chun Mao, Saurabh Bagchi, Eugene H. Spafford
Automated Adaptive Intrusion Containment In Systems Of Interacting Services, Yu-Sung Wu, Bingrui Foo, Yu-Chun Mao, Saurabh Bagchi, Eugene H. Spafford
Department of Electrical and Computer Engineering Technical Reports
Large scale distributed systems typically have interactions among different services that create an avenue for propagation of a failure from one service to another. The failures being considered may be the result of natural failures or malicious activity, collectively called disruptions. To make these systems tolerant to failures it is necessary to contain the spread of the occurrence automatically once it is detected. The objective is to allow certain parts of the system to continue to provide partial functionality in the system in the face of failures. Real world situations impose several constraints on the design of such a disruption …
Ft-Rc4: A Robust Security Mechanism For Data Stream Systems, Mohamed Ali, Mohamed Eltabakh, Cristina Nita-Rotaru
Ft-Rc4: A Robust Security Mechanism For Data Stream Systems, Mohamed Ali, Mohamed Eltabakh, Cristina Nita-Rotaru
Department of Computer Science Technical Reports
No abstract provided.
Hippocratic Data Streams-Concepts, Architectures And Issues, M. H. Ali, M. Y. Eltabakh, Elisa Bertino
Hippocratic Data Streams-Concepts, Architectures And Issues, M. H. Ali, M. Y. Eltabakh, Elisa Bertino
Department of Computer Science Technical Reports
No abstract provided.
Ultra High-Speed Sorting, James F. Leary
Ultra High-Speed Sorting, James F. Leary
Other Nanotechnology Publications
Background: Cell sorting has a history dating back approximately 40 years. The main limitation has been that, although flow cytometry is a science, cell sorting has been an art during most of this time. Recent advances in assisting technologies have helped to decrease the amount of expertise necessary to perform sorting. Methods: Droplet-based sorting is based on a controlled disturbance of a jet stream dependent on surface tension. Sorting yield and purity are highly dependent on stable jet break-off position. System pressures and orifice diameters dictate the number of droplets per second, which is the sort rate limiting step because …
Maintaining Privacy During Psychosocial Research On The International Space Station, Jennifer Boyd Ritsher, Nick Kanas, Stephanie Saylor
Maintaining Privacy During Psychosocial Research On The International Space Station, Jennifer Boyd Ritsher, Nick Kanas, Stephanie Saylor
Journal of Human Performance in Extreme Environments
Conducting psychosocial research on the International Space Station (ISS) requires rigorous privacy precautions that exceed standard scientific human subject protocols. In our previous study involving crewmembers on Mir, and in our ongoing ISS work, special precautions were taken during each phase of the missions. Pre-flight, participants received detailed consent forms explaining that only group-level data would be presented, and they chose ID codes known only to them. In-flight, special procedures protected data during collection and transmission. Post-flight, our analytic strategy further masked participants’ identities, and participant representatives were invited to review manuscript drafts prior to publication. In this paper we …
Multi-Way Joins For Sensor-Network Databases, M. H. Ali, Walid G. Aref, Ibrahim Kamel
Multi-Way Joins For Sensor-Network Databases, M. H. Ali, Walid G. Aref, Ibrahim Kamel
Department of Computer Science Technical Reports
No abstract provided.
Lugrid: Update-Tolerant Grid-Based Indexing For Moving Objects, Xiaopeng Xiong, Mohamed F. Mokbel, Walid G. Aref
Lugrid: Update-Tolerant Grid-Based Indexing For Moving Objects, Xiaopeng Xiong, Mohamed F. Mokbel, Walid G. Aref
Department of Computer Science Technical Reports
No abstract provided.
R-Trees With Update Memos, Xiaopeng Xiong, Walid G. Aref
R-Trees With Update Memos, Xiaopeng Xiong, Walid G. Aref
Department of Computer Science Technical Reports
No abstract provided.
Sieve: A Tool For Automatically Detecting Variations Across Program Versions, Murali Krishna Ramanathan, Ananth Y. Grama, Suresh Jagannathan
Sieve: A Tool For Automatically Detecting Variations Across Program Versions, Murali Krishna Ramanathan, Ananth Y. Grama, Suresh Jagannathan
Department of Computer Science Technical Reports
No abstract provided.
A Dose-Response Curve For The Negative Bias Pressure Of An Intrathoracic Pressure Regulator During Cpr, Charles F. Babbs, Demetris Yannopoulos
A Dose-Response Curve For The Negative Bias Pressure Of An Intrathoracic Pressure Regulator During Cpr, Charles F. Babbs, Demetris Yannopoulos
Weldon School of Biomedical Engineering Faculty Publications
An intrathoracic pressure regulator (ITPR) is a device that can be added to the external end of an endotracheal tube to create controlled negative airway pressure between positive pressure ventilations. The resulting downward bias of the airway pressure baseline promotes increased venous return and enhanced circulation during CPR and also during hypovolemic shock. In the present study we exercised a mathematical model of the human cardiopulmonary system, including airways, lungs, a 4 chambered heart, great vessels, peripheral vascular beds, and the biomechanics of chest compression and recoil, to determine the relationship between systemic perfusion pressure during CPR and the value …
Optimal Control Theory Applied To A Difference Equation Model Of Cardiopulmonary Resuscitation, Eunok Jung, Charles F. Babbs, Suzanne Lenhart, Vladimir A. Protopoescu
Optimal Control Theory Applied To A Difference Equation Model Of Cardiopulmonary Resuscitation, Eunok Jung, Charles F. Babbs, Suzanne Lenhart, Vladimir A. Protopoescu
Weldon School of Biomedical Engineering Faculty Publications
Objective: To apply the mathematical techniques of optimal control theory (OCT) to a validated model of the human circulation during cardiopulmonary resuscitation (CPR), so as to discover improved waveforms for chest compression and decompression that maximize the systemic perfusion pressure (SPP). Methods: The human circulatory system is represented by seven difference equations, which describe the pressure changes in systemic vascular compartments caused by chest compression. The forcing term is the intrathoracic pressure generated by the external chest compression, which is taken as the “control” variable for the system. The optimum waveform of this forcing pressure as a function of time, …
Dynamic Modeling Of Crew Performance For Long-Duration Space Missions, Sara Goudarzi, A. J. Both, Jim Cavazzoni, Alexander Kusnecov
Dynamic Modeling Of Crew Performance For Long-Duration Space Missions, Sara Goudarzi, A. J. Both, Jim Cavazzoni, Alexander Kusnecov
Journal of Human Performance in Extreme Environments
Crew time is one of the most valuable and limited resources during long-duration space missions. Crew time requirements fluctuate depending on variations in crew performance. The limited number of crewmembers, resources, and the myriad of tasks to be performed leave a tight schedule for crewmembers during long-duration space missions. This schedule needs to account for potential interventions (stress events) that may alter predicted performance and thus scheduling. A dynamic crew model using a stochastic Auto Regressive Integrated Moving Average (ARIMA) model of interrupted time series was developed to account for the effects of potential stress events on crew performance. This …
Biophysics Of Cardiopulmonary Resuscitation With Periodic Z-Axis Acceleration Of Abdominal Compression At Aortic Resonant Frequencies, Charles F. Babbs
Biophysics Of Cardiopulmonary Resuscitation With Periodic Z-Axis Acceleration Of Abdominal Compression At Aortic Resonant Frequencies, Charles F. Babbs
Weldon School of Biomedical Engineering Faculty Publications
Periodic z-axis acceleration (pGz)-CPR involves oscillating motion of a whole patient in the head-to-foot dimension on a mechanized table. The method is able to sustain blood flow and long-term survival during and after prolonged cardiac arrest in anesthetized pigs. However, the exact mechanism by which circulation of blood is created has remained unknown. Objectives: To explain the hemodynamic mechanism of pGz-CPR and to suggest theoretically useful improvements. Method: Computer modeling using a hybrid analytical-numerical approach, based upon Newton’s second law of motion for fluid columns in the aorta and vena cavae, Ohm’s law for resistive flow through vascular beds, and …
The Problematics Of A Social Constructivist Approach To Science, Bryce Christensen
The Problematics Of A Social Constructivist Approach To Science, Bryce Christensen
CLCWeb: Comparative Literature and Culture
In his paper, "The Problematics of a Social Constructivist Approach to Science," Bryce Christensen takes John Gray's hope that science can serve as a remedy for anthropocentrism as an entry point for discussing the debate between scientific realists and social constructivists. Christensen examines the way science appears to buttress the realist position when it confronts humans with truths that contradict their expectations and desires. In his discussion, Christensen also surveys the ways that science fits within social constructivist theory when it serves identifiable social needs or advances identifiable group interests. Further, Christensen identifies eschatological cosmology as an extreme test case …
A Novel Evolutionary Global Optimization Algorithm And Its Application In Bioinformatics, Hualin Wang, Okan K. Ersoy
A Novel Evolutionary Global Optimization Algorithm And Its Application In Bioinformatics, Hualin Wang, Okan K. Ersoy
Department of Electrical and Computer Engineering Technical Reports
Gray Code Optimization (GCO) algorithm is a deterministic algorithm based on the Gray code, binary numbers representation. It sometimes suffers from slow convergence and sub-optimal solutions. Expectation Maximization (EM) algorithm is used to analyze how the GCO explores the search space. The investigation of how the GCO generates a population indicates that it is similar to generating samples with a mixture Gaussian distribution. The EM algorithm extracts a three components mixture Gaussian model. Based on these findings, a novel stochastic optimization algorithm based on the mixture Gaussian model is proposed. The new Mixture Gaussian Optimization (MGO) algorithm is not only …
Sample-Based Cameras For Fast Accurate Reflections, Voicu Popescu, Elisha Sacks, Chunhui Mei
Sample-Based Cameras For Fast Accurate Reflections, Voicu Popescu, Elisha Sacks, Chunhui Mei
Department of Computer Science Technical Reports
No abstract provided.
The Discretized Schr ¨ Odinger Equation For The Finite Square Well And Its Relationship To Solid-State Physics, Timothy B. Boykin, Gerhard Klimeck
The Discretized Schr ¨ Odinger Equation For The Finite Square Well And Its Relationship To Solid-State Physics, Timothy B. Boykin, Gerhard Klimeck
Birck and NCN Publications
The discretized Schr¨odinger equation is most often used to solve onedimensional quantum mechanics problems numerically. While it has been recognized for some time that this equation is equivalent to a simple tightbinding model and that the discretization imposes an underlying bandstructure unlike free-space quantum mechanics on the problem, the physical implications of this equivalence largely have been unappreciated and the pedagogical advantages accruing from presenting the problem as one of solid-state physics (and not numerics) remain generally unexplored. This is especially true for the analytically solvable discretized finite square well presented here. There are profound differences in the physics of …
The Discretized Schroedinger Equation For The Finite Square Well And Its Relationship To Solid-State Physics, Timothy B. Boykin, Gerhard Klimeck
The Discretized Schroedinger Equation For The Finite Square Well And Its Relationship To Solid-State Physics, Timothy B. Boykin, Gerhard Klimeck
Other Nanotechnology Publications
The discretized Schr¨odinger equation is most often used to solve onedimensional quantum mechanics problems numerically. While it has been recognized for some time that this equation is equivalent to a simple tightbinding model and that the discretization imposes an underlying bandstructure unlike free-space quantum mechanics on the problem, the physical implications of this equivalence largely have been unappreciated and the pedagogical advantages accruing from presenting the problem as one of solid-state physics (and not numerics) remain generally unexplored. This is especially true for the analytically solvable discretized finite square well presented here. There are profound differences in the physics of …
The Discretized Schrödinger Equation For The Finite Square Well And Its Relationship To Solid-State Physics, Timothy B. Boykin, Gerhard Klimeck
The Discretized Schrödinger Equation For The Finite Square Well And Its Relationship To Solid-State Physics, Timothy B. Boykin, Gerhard Klimeck
Birck and NCN Publications
The discretized Schrödinger equation is most often used to solve onedimensional quantum mechanics problems numerically. While it has been recognized for some time that this equation is equivalent to a simple tightbinding model and that the discretization imposes an underlying bandstructure unlike free-space quantum mechanics on the problem, the physical implications of this equivalence largely have been unappreciated and the pedagogical advantages accruing from presenting the problem as one of solid-state physics (and not numerics) remain generally unexplored. This is especially true for the analytically solvable discretized finite square well presented here. There are profound differences in the physics of …
Querying Private Data In Moving-Object Environments, Reynold Cheng, Yu Zhang, Elisa Bertino, Sunil Prabhakar
Querying Private Data In Moving-Object Environments, Reynold Cheng, Yu Zhang, Elisa Bertino, Sunil Prabhakar
Department of Computer Science Technical Reports
No abstract provided.
Po2v: Network Layer Position Verification In Multi-Hopo Wireless Networks, Xizoxin Wu, Cristina Nita-Rotaru
Po2v: Network Layer Position Verification In Multi-Hopo Wireless Networks, Xizoxin Wu, Cristina Nita-Rotaru
Department of Computer Science Technical Reports
No abstract provided.
Sole: Scalable On-Line Execution Of Continuous Queries On Spatio-Temporal Data Streams, Mohamed F. Mokbel, Walid G. Aref
Sole: Scalable On-Line Execution Of Continuous Queries On Spatio-Temporal Data Streams, Mohamed F. Mokbel, Walid G. Aref
Department of Computer Science Technical Reports
No abstract provided.
Redundant-Reader Elimination In Rfid Systems, Bogdan Carbunar, Murali Krishna Ramanathan, Mehmet Koyuturk, Christoph M. Hoffmann, Ananth Y. Grama
Redundant-Reader Elimination In Rfid Systems, Bogdan Carbunar, Murali Krishna Ramanathan, Mehmet Koyuturk, Christoph M. Hoffmann, Ananth Y. Grama
Department of Computer Science Technical Reports
No abstract provided.
A Novel Hybrid Heat Sink Using Phase Change Materials For Transient Thermal Management Of Electronics, Shankar Krishnan, S V. Garimella, S. S. Kang
A Novel Hybrid Heat Sink Using Phase Change Materials For Transient Thermal Management Of Electronics, Shankar Krishnan, S V. Garimella, S. S. Kang
CTRC Research Publications
A hybrid heat sink concept which combines passive and active cooling approaches is proposed. The hybrid heat sink is essentially a plate fin heat sink with the tip immersed in a phase change material (PCM). The exposed area of the fins dissipates heat during periods when high convective cooling is available. When the air cooling is reduced, the heat is absorbed by the PCM. The governing conservation equations are solved using a finite-volume method on orthogonal, rectangular grids. An enthalpy method is used for modeling the melting/re-solidification phenomena. Results from the analysis elucidate the thermal performance of these hybrid heat …
An Approximate Arrangement Algorithm For Semi-Algebraic Curves, Victor Milenkovic, Elisha Sacks
An Approximate Arrangement Algorithm For Semi-Algebraic Curves, Victor Milenkovic, Elisha Sacks
Department of Computer Science Technical Reports
No abstract provided.