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Pennsylvania State University
(138 results)-
White Papers
Towards Characterizing Cloud Backend Workloads: Insights From Google Compute Clusters
February 14, 2010, 12:00am PST
The advent of cloud computing promises highly available, efficient, and flexible computing services for applications such as web search, email, voice over IP, and web search alerts. One experience...
Provided by Pennsylvania State University
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White Papers
Protocol Design for Wireless Ad Hoc Networks: The Cross-Layer Paradigm
January 1, 2011, 12:00am PST
The wireless ad hoc networks are still in their infancy. The future of these networks would depend on the range of applications that they can efficiently support, which in turn would depend upon...
Provided by Pennsylvania State University
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White Papers
Adaptive Prefetching for Shared Cache Based Chip Multiprocessors
March 19, 2009, 12:00am PDT
Chip Multi-Processors (CMPs) present a unique scenario for software data prefetching with subtle trade-offs between memory bandwidth and performance. In a shared L2 based CMP, multiple cores...
Provided by Pennsylvania State University
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White Papers
Analysis of the Issues of Effective Broadband Media Services Deployment in the Computer Communication
June 27, 2010, 12:00am PDT
Fast Internet access barely scratches the surface of the powers of broadband, DSL, and IP technology, which, combined in broadband media services, will connect people and businesses around the...
Provided by Pennsylvania State University
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White Papers
Leveraging Strictly Causal State Information at the Encoders for Multiple Access Channels
May 26, 2011, 12:00am PDT
The state-dependent Multiple Access Channel (MAC) is considered where the state sequences are known strictly causally to the encoders. First, a two-user MAC with two independent states each known...
Provided by Pennsylvania State University
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White Papers
The Cognitive Multiple Access Wire-Tap Channel
March 2, 2009, 12:00am PST
A cognitive Multiple Access Channel with a WireTapper (cMAC-WT) is studied, where one of the two encoders is cognitive, in the sense that it knows a priori the message of the other encoder. Both...
Provided by Pennsylvania State University
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White Papers
To Move or Not to Move: The Economics of Cloud Computing
May 12, 2011, 12:00am PDT
Cloud-based hosting promises cost advantages over conventional in-house (on-premise) application deployment. One important question when considering a move to the cloud is whether it makes sense...
Provided by Pennsylvania State University
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White Papers
Migration, Assignment, and Scheduling of Jobs in Virtualized Environment
May 18, 2011, 12:00am PDT
Migration is an interesting issue for managing resource utilization and performance in clusters. Recent advances in server virtualization have made migration a practical method to achieve these...
Provided by Pennsylvania State University
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White Papers
An Energy-Efficient Broadcast Protocol in MANETs: Design and Evaluation
January 12, 2010, 12:00am PST
As the technology of Mobile Ad hoc NETworks (MANETs) develops, many new kinds of applications in this field emerge. The group-oriented services which take advantage of the broadcasting nature of...
Provided by Pennsylvania State University
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White Papers
Uncertainty in Wireless Sensor Networks
April 29, 2010, 12:00am PDT
Advances in sensor technology, wireless networking and in mobile devices are revolutionizing the ways that information from the physical world is collected and used. Wireless sensor networks...
Provided by Pennsylvania State University
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White Papers
Data Replication in Mobile Tactical Networks
August 15, 2011, 12:00am PDT
In tactical networks, nodes move according to tactical maneuvers and network partitions occur frequently. To mitigate this problem, data replication is commonly used to increase data availability...
Provided by Pennsylvania State University
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White Papers
ASAP: A MAC Protocol for Dense and Time-Constrained RFID Systems
June 21, 2007, 12:00am PDT
The authors introduce a novel Medium Access Control (MAC) protocol for Radio Frequency IDentification (RFID) systems which exploits the statistical information collected at the reader. The...
Provided by Pennsylvania State University
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White Papers
SET: Detecting Node Clones in Sensor Networks
October 24, 2008, 12:00am PDT
Sensor nodes that are deployed in hostile environments are vulnerable to capture and compromise. An adversary may obtain private information from these sensors, clone and intelligently deploy them...
Provided by Pennsylvania State University
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White Papers
A Study on Using Network Flows in Hierarchical QoS Routing
January 1, 2008, 12:00am PST
QoS routing is the process of routing a connection based on the connection's resource requirements. The overhead involved in QoS routing increases with the network size. State aggregation is an...
Provided by Pennsylvania State University
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White Papers
Power-Controlled CDMA Cell Sectorization With Multiuser Detection: A Comprehensive Analysis on Uplink and Downlink
October 12, 2007, 12:00am PDT
The authors consider the joint optimization problem of cell sectorization, transmit power control and multiuser detection for a CDMA cell. Given the number of sectors and user locations, the cell...
Provided by Pennsylvania State University
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White Papers
Two-Hop Secure Communication Using an Untrusted Relay: A Case for Cooperative Jamming
December 16, 2008, 12:00am PST
The authors consider a source-destination pair that can communicate only through an unauthenticated intermediate relay node. In this two-hop communication scenario, where the cooperation from the...
Provided by Pennsylvania State University
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White Papers
A Logical Specification and Analysis for SELinux MLS Policy
June 22, 2007, 12:00am PDT
The SELinux Mandatory Access Control (MAC) policy has recently added a multi-level security (MLS) model which is able to express a fine granularity of control over a subject's access rights. The...
Provided by Pennsylvania State University
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White Papers
A Study of Android Application Security
May 10, 2011, 12:00am PDT
The fluidity of application markets complicate smartphone security. Although recent efforts have shed light on particular security issues, there remains little insight into broader security...
Provided by Pennsylvania State University
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White Papers
Specification of Workflow Management Systems With UML
November 7, 2007, 12:00am PST
Unified Modeling Language (UML) defines a standard notation for object-oriented systems. Using UML enhances communication between domain experts, workflow specialists, software designers and other...
Provided by Pennsylvania State University
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White Papers
Scalable Web Content Attestation
September 22, 2009, 12:00am PDT
The web is a primary means of information sharing for most organizations and people. Currently, a recipient of web content knows nothing about the environment in which that information was...
Provided by Pennsylvania State University
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White Papers
Scenario Analysis of Web Service Composition Based on Multi-Criteria Mathematical Goal Programming
December 13, 2011, 12:00am PST
This paper addresses the web service composition problem considering multi-criteria regarding Quality of Services (QoS). Three different scenarios of multi-criteria mathematical programming models...
Provided by Pennsylvania State University
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White Papers
Addressing Practical Challenges in Utility Optimization of Mobile Wireless Sensor Networks
February 11, 2008, 12:00am PST
This paper examines the practical challenges in the application of the distributed Network Utility Maximization (NUM) framework to the problem of resource allocation and sensor device adaptation...
Provided by Pennsylvania State University
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White Papers
Control-Theoretic, Mission-Driven, Optimization Techniques for Wireless Sensor Networks
December 15, 2008, 12:00am PST
Network Utility Maximization (NUM) techniques, which cast resource sharing problems as one of distributed utility maximization, have been investigated for a variety of optimization problems in...
Provided by Pennsylvania State University
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White Papers
An Introduction to Web Systems Using UML, the Unified Modeling Language
May 23, 2011, 12:00am PDT
UML, the Unified Modeling Language, is designed to specify systems in a way such that clients and developers can communicate and agree on system-specifications. The complete UML is complex, but...
Provided by Pennsylvania State University
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White Papers
Evaluating Survivability and Costs of Three Virtual Machine Based Server Architectures
April 21, 2010, 12:00am PDT
Virtual machine based services are becoming predominant in data centers or cloud computing since virtual machines can provide strong isolation and better monitoring for security purposes. While...
Provided by Pennsylvania State University
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White Papers
Detecting Spam Bots in Online Social Networking Sites: A Machine Learning Approach
April 21, 2010, 12:00am PDT
As online social networking sites become more and more popular, they have also attracted the attentions of the spammers. In this paper, Twitter, a popular micro-blogging service, is studied as an...
Provided by Pennsylvania State University
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White Papers
Distributed Maintenance of Cache Freshness in Opportunistic Mobile Networks
March 15, 2012, 12:00am PDT
Opportunistic mobile networks consist of personal mobile devices which are intermittently connected with each other. Data access can be provided to these devices via cooperative caching without...
Provided by The Pennsylvania State University
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White Papers
Optimal Recovery From Large-Scale Failures in IP Networks
March 13, 2012, 12:00am PDT
Quickly recovering IP networks from failures is critical to enhancing Internet robustness and availability. Due to their serious impact on network routing, large-scale failures have received...
Provided by The Pennsylvania State University
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White Papers
Robust Topology Control in Multi-Hop Cognitive Radio Networks
January 9, 2012, 12:00am PST
The opening of under-utilized spectrum creates the opportunity of substantial performance improvement through cognitive radio techniques. However, the real network performance may be limited since...
Provided by The Pennsylvania State University
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White Papers
Distributed Critical Location Coverage in Wireless Sensor Networks With Lifetime Constraint
January 9, 2012, 12:00am PST
In many surveillance scenarios, there are some known critical locations where the events of concern are expected to occur. A common goal in such applications is to use sensors to monitor these...
Provided by The Pennsylvania State University
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White Papers
Interference Channels With Strong Secrecy
October 14, 2009, 12:00am PDT
It is known that given the real sum of two independent uniformly distributed lattice points from the same nested lattice codebook, the eavesdropper can obtain at most 1 bit of information per...
Provided by The Pennsylvania State University
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White Papers
A Stochastic Model of the Damage Propagation in Database Systems
March 24, 2009, 12:00am PDT
Security defense tools like firewalls and antivirus software's are not sufficient to defend against dynamic threats to database systems. Successful attacks could not only seriously impair the...
Provided by The Pennsylvania State University
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White Papers
Cost Sharing With Network Coding in Two-Way Relay Networks
October 2, 2009, 12:00am PDT
The authors consider a scenario in which two sources exchange stochastically varying traffic with the aid of a bidirectional relay that may perform network coding over the incoming packets. Each...
Provided by The Pennsylvania State University
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White Papers
Degraded Broadcast Diamond Channels With Non-Causal State Information at the Source
March 8, 2012, 12:00am PST
A state-dependent degraded broadcast diamond channel is studied where the source-to-relays cut is modeled with two noiseless, finite-capacity digital links with a degraded broadcasting structure,...
Provided by The Pennsylvania State University
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Whitepapers
On the Equivocation Region of Relay Channels With Orthogonal Components
November 24, 2007, 12:00am PST
The authors consider the secrecy rate of a relay network where an eavesdropper is co-located with the relay node. This exemplifies a scenario where the relay node is not malicious by nature, but...
Provided by Pennsylvania State University
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Whitepapers
CloudPD: Problem Determination and Diagnosis in Shared Dynamic Clouds
May 22, 2012, 12:00am PDT
Cloud computing has emerged as a popular computing paradigm allowing workloads to automatically scale in response to changes in demand. Clouds use virtualization to enable elasticity by...
Provided by Pennsylvania State University
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Whitepapers
MROrchestrator: A Fine-Grained Resource Orchestration Framework for MapReduce Clusters
May 5, 2012, 12:00am PDT
Efficient resource management in data centers and clouds running large distributed data processing frameworks like MapReduce is crucial for enhancing the performance of hosted applications and...
Provided by Pennsylvania State University
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Whitepapers
A Resilient and Collaborative Replacement Framework for Per-Flow Monitoring
February 25, 2009, 12:00am PST
In the context of a collaborating surveillance system for active TCP sessions handled by an networking device, the authors consider two problems. The first is the problem of protecting the flow...
Provided by Pennsylvania State University
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Whitepapers
Applications of Data Mining in the Management of Performance and Power in Data Centers
December 10, 2009, 12:00am PST
Performance and power issues are becoming increasingly important in the design of large data centers for supporting a multitude of services. There are many perspectives of addressing these issues...
Provided by Pennsylvania State University
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Whitepapers
Carbon-Aware Energy Capacity Planning for Datacenters
June 1, 2012, 12:00am PDT
Datacenters are facing increasing pressure to cap their carbon footprints at low cost. Recent work has shown the significant environmental benefits of using renewable energy for datacenters by...
Provided by The Pennsylvania State University
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White Papers
MorphCache: A Reconfigurable Adaptive Multi-Level Cache Hierarchy
December 12, 2010, 12:00am PST
Given the diverse range of application characteristics that Chip MultiProcessors (CMPs) need to cater to, a "One-cache-topology-fits-all" design philosophy will clearly be inadequate. In this...
Provided by Pennsylvania State University
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White Papers
Integrated Code and Data Placement in Two-Dimensional Mesh Based Chip Multiprocessors
July 30, 2008, 12:00am PDT
As transistor sizes continue to shrink and the number of transistors per chip keeps increasing, Chip MultiProcessors (CMPs) are becoming a promising alternative to remain on the current...
Provided by Pennsylvania State University
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White Papers
Synergistic TLBs for High Performance Address Translation in Chip Multiprocessors
September 12, 2010, 12:00am PDT
Translation Look-aside Buffers (TLBs) are vital hardware support for virtual memory management in high performance computer systems and have a momentous influence on overall system performance....
Provided by Pennsylvania State University
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White Papers
Providing Secrecy With Structured Codes: Tools and Applications to Two-User Gaussian Channels
July 30, 2009, 12:00am PDT
Recent results have shown that structured codes can be used to construct good channel codes, source codes and physical layer network codes for Gaussian channels. For Gaussian channels with secrecy...
Provided by Pennsylvania State University
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White Papers
Providing Secrecy With Lattice Codes
May 16, 2009, 12:00am PDT
Recent results have shown that lattice codes can be used to construct good channel codes, source codes and physical layer network codes for Gaussian channels. On the other hand, for Gaussian...
Provided by Pennsylvania State University
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White Papers
K-User Interference Channels: Achievable Secrecy Rate and Degrees of Freedom
May 16, 2009, 12:00am PDT
In a wireless environment, interference is always present. Traditionally, interference is viewed as a harmful physical phenomenon that should be avoided. Yet, from the secrecy perspective, if...
Provided by Pennsylvania State University
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White Papers
Secure Degrees of Freedom for Gaussian Channels With Interference: Structured Codes Outperform Gaussian Signaling
May 15, 2009, 12:00am PDT
In this work, the authors prove that a positive secure degree of freedom is achievable for a large class of Gaussian channels as long as the channel is not degraded and the channel is fully...
Provided by Pennsylvania State University
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White Papers
Don't Follow Me: Spam Detection in Twitter
April 23, 2010, 12:00am PDT
The rapidly growing social network Twitter has been infiltrated by large amount of spam. In this paper, a spam detection prototype system is proposed to identify suspicious users on Twitter. A...
Provided by Pennsylvania State University
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White Papers
DRPM: Dynamic Speed Control for Power Management in Server Class Disks
January 1, 2011, 12:00am PST
A large portion of the power budget in server environments goes into the I/O subsystem the disk array in particular. Traditional approaches to disk power management involve completely stopping the...
Provided by Pennsylvania State University
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White Papers
Balancing User Privacy Concerns in the Adoption of Location-Based Services: An Empirical Analysis Across Pull-Based and Push-Based Applications
March 23, 2009, 12:00am PDT
Location-Based Services (LBS) bring unprecedented mobility and personalization value to nomadic individuals and hence carry great commercial potential. However, the commercial potential of LBS is...
Provided by Pennsylvania State University
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White Papers
RFID Privacy Issues in Healthcare: Exploring the Roles of Technologies and Regulations
September 18, 2010, 12:00am PDT
With the deployment and use of Radio Frequency IDentification (RFID) technology in the healthcare domain, there are increasing privacy concerns regarding the technical designs of RFID systems...
Provided by Pennsylvania State University
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White Papers
A Flexible Privacy Enhanced Location Based Services System Framework and Practice
April 16, 2008, 12:00am PDT
Location Based Services (LBS) are becoming increasingly important to the success and attractiveness of next generation wireless systems. However, a natural tension arises between the need for user...
Provided by Pennsylvania State University
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White Papers
QoS Specification Languages for Distributed Multimedia Applications: A Survey and Taxonomy
January 1, 2011, 12:00am PST
Quality of Service (QoS) is becoming an integral part of currently ubiquitous distributed multimedia applications. However, before any QoS-related mechanisms and policies, such as admission...
Provided by Pennsylvania State University
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White Papers
On Cooperative Caching in Wireless P2P Networks
March 19, 2008, 12:00am PDT
Some recent studies have shown that cooperative cache can improve the system performance in wireless P2P networks such as ad hoc networks and mesh networks. However, all these studies are at a...
Provided by Pennsylvania State University
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White Papers
Path-Centric On-Demand Rate Adaptation for Mobile Ad Hoc Networks
September 24, 2009, 12:00am PDT
Exploiting the multirate capability in Mobile Ad hoc NETworks (MANETs) is more complex than in single-hop WLANs because of the rate-distance and rate-hop count tradeoffs. This paper proposes...
Provided by Pennsylvania State University
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White Papers
Cross-Layer Enhanced Source Location Privacy in Sensor Networks
May 3, 2009, 12:00am PDT
Source location privacy is an important issue in sensor network monitoring applications. It is difficult to be addressed by traditional security mechanisms, because an external attacker may...
Provided by Pennsylvania State University
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White Papers
Roadcast: A Popularity Aware Content Sharing Scheme in VANETs
April 5, 2010, 12:00am PDT
Content sharing through vehicle-to-vehicle communication can help people find their interested content on the road. In VANETs, due to limited contact duration time and the unreliable wireless...
Provided by Pennsylvania State University
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White Papers
Social-Aware Data Diffusion in Delay Tolerant MANETs
August 11, 2010, 12:00am PDT
Most existing mobility-assisted data access techniques in Delay Tolerant Mobile Ad hoc NETworks (DT-MANETs) are designed to disseminate data to one or several particular destinations. Different...
Provided by Pennsylvania State University
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White Papers
Spatial-Temporal Coverage Optimization in Wireless Sensor Networks
April 7, 2009, 12:00am PDT
Mission-driven sensor networks usually have special lifetime requirements. However, the density of the sensors may not be large enough to satisfy the coverage requirement while meeting the...
Provided by Pennsylvania State University
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White Papers
MobiCom Poster Abstract: An Energy-Efficient Fault-Tolerant Monitoring System for Sensor Networks
October 29, 2007, 12:00am PDT
Because sensors are often deployed in harsh and/or adversarial environments, the sensors or the communication links may fail and hence endanger the mission of the sensor network. Although using...
Provided by Pennsylvania State University
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White Papers
A Multi-Poller Based Energy-Efficient Monitoring Scheme for Wireless Sensor Networks
January 20, 2009, 12:00am PST
For sensor networks deployed in unattended, harsh environments, the knowledge of sensor statuses such as liveness, node density and residue energy, is critical for maintaining the normal operation...
Provided by Pennsylvania State University
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White Papers
Minimizing the Cost of Mine Selection Via Sensor Networks
January 20, 2009, 12:00am PST
This paper explores the potential of networking the landmines via sensor technology. Specifically, the authors formulate a detonable selection problem, with the objective to destroy the intruding...
Provided by Pennsylvania State University
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White Papers
On Supporting Distributed Collaboration in Sensor Networks
June 4, 2007, 12:00am PDT
In sensor networks, nodes may malfunction due to the hostile environment. Therefore, dealing with node failure is a very important research issue. In this paper, the authors study distributed...
Provided by Pennsylvania State University
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White Papers
A Bidding Protocol for Deploying Mobile Sensors
June 4, 2007, 12:00am PDT
In some harsh environments, manually deploying sensors is impossible. Alternative methods may lead to imprecise placement resulting in coverage holes. To provide the required high coverage in...
Provided by Pennsylvania State University
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White Papers
Data Dissemination With Ring-Based Index for Sensor Networks
June 4, 2007, 12:00am PDT
In current sensor networks, sensor nodes are capable of not only measuring real world phenomena, but also storing, processing and transferring these measurements. Many data dissemination...
Provided by Pennsylvania State University
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White Papers
Adapting BitTorrent to Wireless Ad Hoc Networks
June 12, 2008, 12:00am PDT
BitTorrent is one of the Internet's most efficient content distribution protocols. It is known to perform very well over the wired Internet where end-to-end performance is almost guaranteed....
Provided by Pennsylvania State University
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White Papers
Network Service Description and Discovery for the Next Generation Internet
January 12, 2010, 12:00am PST
The next generation Internet will face new challenges due to the coexisting heterogeneous networks and highly diverse networking applications. Therefore how to coordinate heterogeneous networking...
Provided by The Pennsylvania State University
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White Papers
7 Things You Need to Know About Location-Aware Technologies
May 29, 2007, 12:00am PDT
Location-aware technology is a general term for technology that can determine its own geographical location. A familiar example is the Global Positioning System (GPS) - the navigation system that...
Provided by The Pennsylvania State University
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White Papers
A Web Service Composition Framework Using Integer Programming With Non-Functional Objectives and Constraints
June 4, 2008, 12:00am PDT
This paper proposes a Web service composition framework that uses Integer Linear Programming with non-functional objectives and constraints, in addition to the syntactic matching of Web services...
Provided by Pennsylvania State University
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White Papers
Type-Aware Web Service Composition Using Boolean Satisfiability Solver
May 25, 2008, 12:00am PDT
The goal of the Web Service Composition (WSC) problem is to find an optimal "Composition" of web services to satisfy a given request using their syntactic and/or semantic features, when no single...
Provided by Pennsylvania State University
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White Papers
Computational Complexity of Web Service Composition Based on Behavioral Descriptions
August 18, 2008, 12:00am PDT
The Web Service Composition (WSC) problem on behavioral descriptions deals with the automatic construction of a coordinator web service to control a set of web services to reach the goal states....
Provided by Pennsylvania State University
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White Papers
Defending Against Attribute-Correlation Attacks in Privacy-Aware Information Brokering
May 9, 2009, 12:00am PDT
Nowadays, increasing needs for information sharing arise due to extensive collaborations among organizations. Organizations desire to provide data access to their collaborators while preserving...
Provided by Pennsylvania State University
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White Papers
Efficient Abstraction and Refinement for Behavioral Description Based Web Service Composition
April 13, 2009, 12:00am PDT
The Web Service Composition (WSC) problem with respect to behavioral descriptions deals with the automatic synthesis of a coordinator web service, c that controls a set of web services to reach a...
Provided by Pennsylvania State University
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White Papers
XML Access Control
May 14, 2008, 12:00am PDT
XML access control refers to the practice of limiting access to (Parts of) XML data to only authorized users. Similar to access control over other types of data and resources, XML access control...
Provided by Pennsylvania State University
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White Papers
Using Surveys For Data Collection In Continuous Improvement
June 22, 2007, 12:00am PDT
This paper about Innovation Insights explains how to use surveys to obtain data. Valid, meaningful surveys provide an effective means for teams to obtain stakeholder input, but require much time...
Provided by Pennsylvania State University
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White Papers
CiteSeerx: A Cloud Perspective
May 28, 2010, 12:00am PDT
Information retrieval applications are good candidates for hosting in a cloud infrastructure. CiteSeerx a digital library and search engine was built with the goal of efficiently disseminating...
Provided by Pennsylvania State University
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White Papers
TaintDroid: An Information-Flow Tracking System for Realtime Privacy Monitoring on Smartphones
September 30, 2010, 12:00am PDT
Today's smartphone operating systems frequently fail to provide users with adequate control over and visibility into how third-party applications use their private data. The authors address these...
Provided by Pennsylvania State University
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White Papers
Electricity Prices And Costs Under Regulation And Restructuring
March 4, 2008, 12:00am PST
Restructuring of the electricity industry was expected to improve the operating efficiency of electric power generators, leading to lower production costs and retail prices. Most studies conclude...
Provided by Pennsylvania State University
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White Papers
A Chain Reaction DoS Attack on 3G Networks: Analysis and Defenses
January 20, 2009, 12:00am PST
The IP Multimedia Subsystem (IMS) is being deployed in the Third Generation (3G) networks since it supports many kinds of multimedia services. However, the security of IMS networks has not been...
Provided by Pennsylvania State University
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White Papers
Distributed Monitoring and Aggregation in Wireless Sensor Networks
December 18, 2009, 12:00am PST
Self-monitoring the sensor statuses such as liveness, node density and residue energy is critical for maintaining the normal operation of the sensor network. When building the monitoring...
Provided by Pennsylvania State University
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