Social Pervasive Systems: The Harmonization Between Social Networking And Pervasive Systems,
2014
American University in Cairo
Social Pervasive Systems: The Harmonization Between Social Networking And Pervasive Systems, Soumaia Al Ayyat
Papers, Posters, and Presentations
The recent advancement in mobile device sensor technology, coupled with the wealth of structured accessible data of social networks, form a very data-wealthy ecosystem. Such an ecosystem is rich in bi-directional context that can flow between the mobile and social worlds enabling the creation of an elitist breed of pervasive services and applications. We label the breed resulting from the merger as Social Pervasive Systems (SPS).
Efficient Cooperative Mimo Paradigms For Cognitive Radio Networks,
2014
Tennessee State University
Efficient Cooperative Mimo Paradigms For Cognitive Radio Networks, Wei Chen, Liang Hong, Xiaoqian Chen
Computer Science Faculty Research
This paper investigates the benefits that cooperative communication brings to cognitive radio networks. We focus on cooperative Multiple Input Multiple Output (MIMO) technology, where multiple distributed single-antenna secondary users cooperate on data transmission and reception. Three cooperative MIMO paradigms are proposed to maximize the diversity gain and significantly improve the performance of overlay, underlay and interweave systems. In the paradigm for overlay systems the secondary users can assist (relay) the primary transmissions even when they are far away from the primary users. In the paradigm for underlay systems the secondary users can share the primary users’ frequency resources without any …
Efficient Anonymous Biometric Matching In Privacy-Aware Environments,
2014
University of Kentucky
Efficient Anonymous Biometric Matching In Privacy-Aware Environments, Ying Luo
Theses and Dissertations--Electrical and Computer Engineering
Video surveillance is an important tool used in security and environmental monitoring, however, the widespread deployment of surveillance cameras has raised serious privacy concerns. Many privacy-enhancing schemes have been recently proposed to automatically redact images of selected individuals in the surveillance video for protection. To identify these individuals for protection, the most reliable approach is to use biometric signals as they are immutable and highly discriminative. If misused, these characteristics of biometrics can seriously defeat the goal of privacy protection. In this dissertation, an Anonymous Biometric Access Control (ABAC) procedure is proposed based on biometric signals for privacy-aware video surveillance. …
Sps: An Sms-Based Push Service For Energy Saving In Smartphone's Idle State,
2014
University of Central Florida
Sps: An Sms-Based Push Service For Energy Saving In Smartphone's Idle State, Erich Dondyk
Electronic Theses and Dissertations
Despite of all the advances in smartphone technology in recent years, smartphones still remain limited by their battery life. Unlike other power hungry components in the smartphone, the cellular data and Wi-Fi interfaces often continue to be used even while the phone is in the idle state to accommodate unnecessary data traffic produced by some applications. In addition, bad reception has been proven to greatly increase energy consumed by the radio, which happens quite often when smartphone users are inside buildings. In this paper, we present a Short message service Push based Service (SPS) to save unnecessary power consumption when …
A Study Of Forensic Imaging In The Absence Of Write-Blockers,
2014
Embry-Riddle Aeronautical University
A Study Of Forensic Imaging In The Absence Of Write-Blockers, Gary C. Kessler, Gregory H. Carlton
Security Studies & International Affairs - Daytona Beach
"Best practices in digital forensics demand the use of write-blockers when creating forensic images of digital media, and this has been a core tenet of computer forensics training for decades. The practice is so ingrained that the integrity of images created without a write-blocker are immediately suspect. This paper describes a research framework that compares forensic images acquired with and without utilizing write-blockers in order to understand the extent of the differences, if any, in the resultant forensic copies. We specifically address whether differences are superficial or evidentiary, and we discuss the impact of admitting evidence acquired without write blocking. …
Streaming Computations With Precise Control,
2014
Computer Sciences
Streaming Computations With Precise Control, Peng Li, Kunal Agrawal, Jeremy Buhler, Roger Chamberlain
All Computer Science and Engineering Research
No abstract provided.
Cloudpowercap: Integrating Power Budget And Resource Management Across A Virtualized Server Cluster,
2014
Washington University in St Louis
Cloudpowercap: Integrating Power Budget And Resource Management Across A Virtualized Server Cluster, Yong Fu, Anne Holler, Chenyang Lu
All Computer Science and Engineering Research
In many datacenters, server racks are highly underutilized. Rack slots are left empty to keep the sum of the server nameplate maximum power below the power provisioned to the rack. And the servers that are placed in the rack cannot make full use of available rack power. The root cause of this rack underutilization is that the server nameplate power is often much higher than can be reached in practice. To address rack underutilization, server vendors are shipping support for per-host power caps, which provide a server-enforced limit on the amount of power that the server can draw. Using this …
Federated Scheduling For Stochastic Parallel Real-Time Tasks,
2014
Washington University in St Louis
Federated Scheduling For Stochastic Parallel Real-Time Tasks, Jing Li, Kunal Agrawal, Christopher Gill, Chenyang Lu
All Computer Science and Engineering Research
Federated scheduling is a strategy to schedule parallel real-time tasks: It allocates a dedicated cluster of cores to high-utilization task (utilization >1); It uses a multiprocessor scheduling algorithm to schedule and execute all low-utilization tasks sequentially, on a shared cluster of the remaining cores. Prior work has shown that federated scheduling has the best known capacity augmentation bound of 2 for parallel tasks with implicit deadlines. In this paper, we explore the soft real-time performance of federated scheduling and address the average-case workloads instead of the worst-case values. In particular, we consider stochastic tasks -- tasks for which execution time …
Performance Modeling Of Virtualized Custom Logic Computations,
2014
Washington University in St Louis
Performance Modeling Of Virtualized Custom Logic Computations, Michael J. Hall, Roger D. Chamberlain
All Computer Science and Engineering Research
Virtualization of custom logic computations (i.e., by sharing a fixed function across distinct data streams) provides a means of reusing hardware resources, particularly when resources are limited. This is common practice in traditional processors where more than one user can share processor resources. In this paper, we virtualize a custom logic block using C-slow techniques to support fine-grain context-switching. We then develop and present an analytic model for several performance measures (throughput, latency, input queue occupancy) for both fine-grained and coarse-grained context switching (to a secondary memory). Next, we calibrate the analytic performance model with empirical measurements. We then validate …
Capacity Augmentation Bound Of Federated Scheduling For Parallel Dag Tasks,
2014
Washington University in St Louis
Capacity Augmentation Bound Of Federated Scheduling For Parallel Dag Tasks, Jing Li, Abusayeed Saifullah, Kunal Agrawal, Christopher Gill
All Computer Science and Engineering Research
We present a novel federated scheduling approach for parallel real-time tasks under a general directed acyclic graph (DAG) model. We provide a capacity augmentation bound of 2 for hard real-time scheduling; here we use the worst-case execution time and critical-path length of tasks to determine schedulability. This is the best known capacity augmentation bound for parallel tasks. By constructing example task sets, we further show that the lower bound on capacity augmentation of federated scheduling is also 2 for any m > 2. Hence, the gap is closed and bound 2 is a strict bound for federated scheduling. The federated scheduling …
Rt-Openstack: A Real-Time Cloud Management System,
2014
Washington University in St Louis
Rt-Openstack: A Real-Time Cloud Management System, Sisu Xi, Chong Li, Chenyang Lu, Christopher D. Gill, Meng Xu, Linh T.X. Phan, Insup Lee, Oleg Sokolsky
All Computer Science and Engineering Research
Clouds have become appealing platforms for running not only general-purpose applications but also real-time applications. However, current clouds cannot provide real-time performance for virtual machines (VM) for two reasons: (1) the lack of a real-time virtual machine monitor (VMM) scheduler on a single host, and (2) the lack of a real-time aware VM placement scheme by the cloud manager. While real-time VM schedulers do exist, prior solutions employ either heuristics-based approaches that cannot always achieve predictable latency or apply real-time scheduling theory that may result in low CPU utilization. We observe the demand and advantage for co-hosting real-time (RT) VMs …
Intellectual Property Issues In The Network Cloud: Virtual Models And Digital Three-Dimensional Printers,
2014
University of Maryland Francis King Carey School of Law
Intellectual Property Issues In The Network Cloud: Virtual Models And Digital Three-Dimensional Printers, Darrell G. Mottley
Journal of Business & Technology Law
No abstract provided.
Listening To Botnet Communication Channels To Protect Information Systems,
2014
Auckland University of Technology
Listening To Botnet Communication Channels To Protect Information Systems, Brian Cusack, Sultan Almutairi
Australian Digital Forensics Conference
Botnets are a weapon of choice for people who wish to exploit information systems for economic advantage. A large percentage of high value commercial targets such as banking transaction systems and human customers are web connected so that access is gained through Internet services. A Botnet is designed to maximise the possibility of an economic success through the low cost of attacks and the high number that may be attempted in any small time unit. In this paper we report exploratory research into the communications of Botnets. The research question was: How do Botnets talk with the command and control …
The Zombies Strike Back: Towards Client-Side Beef Detection,
2014
Edith Cowan University
The Zombies Strike Back: Towards Client-Side Beef Detection, Maxim Chernyshev, Peter Hannay
Australian Digital Forensics Conference
A web browser is an application that comes bundled with every consumer operating system, including both desktop and mobile platforms. A modern web browser is complex software that has access to system-level features, includes various plugins and requires the availability of an Internet connection. Like any multifaceted software products, web browsers are prone to numerous vulnerabilities. Exploitation of these vulnerabilities can result in destructive consequences ranging from identity theft to network infrastructure damage. BeEF, the Browser Exploitation Framework, allows taking advantage of these vulnerabilities to launch a diverse range of readily available attacks from within the browser context. Existing defensive …
Locational Wireless And Social Media-Based Surveillance,
2014
Edith Cowan University
Locational Wireless And Social Media-Based Surveillance, Maxim Chernyshev
Australian Digital Forensics Conference
The number of smartphones and tablets as well as the volume of traffic generated by these devices has been growing constantly over the past decade and this growth is predicted to continue at an increasing rate over the next five years. Numerous native features built into contemporary smart devices enable highly accurate digital fingerprinting techniques. Furthermore, software developers have been taking advantage of locational capabilities of these devices by building applications and social media services that enable convenient sharing of information tied to geographical locations. Mass online sharing resulted in a large volume of locational and personal data being publicly …
A Forensically-Enabled Iaas Cloud Computing Architecture,
2014
Plymouth University
A Forensically-Enabled Iaas Cloud Computing Architecture, Saad Alqahtany, Nathan Clarke, Steven Furnell, Christoph Reich
Australian Digital Forensics Conference
Current cloud architectures do not support digital forensic investigators, nor comply with today’s digital forensics procedures largely due to the dynamic nature of the cloud. Whilst much research has focused upon identifying the problems that are introduced with a cloud-based system, to date there is a significant lack of research on adapting current digital forensic tools and techniques to a cloud environment. Data acquisition is the first and most important process within digital forensics – to ensure data integrity and admissibility. However, access to data and the control of resources in the cloud is still very much provider-dependent and complicated …
Up-Dating Investigation Models For Smart Phone Procedures,
2014
Auckland University of Technology
Up-Dating Investigation Models For Smart Phone Procedures, Brian Cusack, Raymond Lutui
Australian Digital Forensics Conference
The convergence of services in Smart Technologies such as iPhones, Androids and multiple tablet work surfaces challenges the scope of any forensic investigation to include cloud environments, devices and service media. The analysis of current investigation guidelines suggests that each element in an investigation requires an independent procedure to assure the preservation of evidence. However we dispute this view and review the possibility of consolidating current investigation guidelines into a unified best practice guideline. This exploratory research proposes to fill a gap in digital forensic investigation knowledge for smart technologies used in business environments and to propose a better way …
The Impact Of Custom Rom Backups On Android External Storage Erasure,
2014
Edith Cowan University
The Impact Of Custom Rom Backups On Android External Storage Erasure, Haydon Hope, Peter Hannay
Australian Digital Forensics Conference
The Android operating system is the current market leader on mobile devices such as smartphones and tablet computers. The core operating system is open source and has a number of developers creating variants of this operating system. These variants, often referred to as custom ROMs are available for a wide number of mobile devices. Custom ROMs provide a number of features, such as enhanced control over the operating system, variation in user interfaces and so on. The process of installing custom ROMs is often accomplished through the use of a ROM manager application. Such applications often provide mechanisms to back …
Service And Communication Management In Cooperative Vehicular Networks,
2014
Nimbus Centre for Embedded Systems Research, Department of Electronic Engineering, Cork Institute of Technology, Cork, Ireland.
Service And Communication Management In Cooperative Vehicular Networks, Olivia Brickley
Theses
The concept of Intelligent Transportation Systems (ITS) presents new R&D challenges for the transportation and ICT sectors and is currently receiving considerable interest from the research community. The primary objective of ITS is the creation of advanced road traffic systems for improved traffic safety, efficiency, and travelling comfort. Basic vehicle and roadside infrastructure collaboration allows for an increase in efficiency and safety and acts as the foundation for an extensive service set to achieve these ITS goals. Applications such as journey planning, automatic tolling and emergency warnings, among others, are envisaged in a system which can potentially reform modern transportation. …
File Detection On Network Traffic Using Approximate Matching,
2014
University of New Haven
File Detection On Network Traffic Using Approximate Matching, Frank Breitinger, Ibrahim Baggili
Electrical & Computer Engineering and Computer Science Faculty Publications
In recent years, Internet technologies changed enormously and allow faster Internet connections, higher data rates and mobile usage. Hence, it is possible to send huge amounts of data / files easily which is often used by insiders or attackers to steal intellectual property. As a consequence, data leakage prevention systems (DLPS) have been developed which analyze network traffic and alert in case of a data leak. Although the overall concepts of the detection techniques are known, the systems are mostly closed and commercial. Within this paper we present a new technique for network traffic analysis based on approximate matching (a.k.a …
