Computer Sciences Commons^™

A Hadoop Approach To Advanced Sampling Algorithms In Molecular Dynamics Simulation On Cloud Computing, Jin Niu, Shuju Bai, Ebrahim Khosravi, Seung Jong Park

Computer Science Faculty Research & Creative Works

Cloud computing has emerged as a prevalent computing paradigm with the advantages of virtualization, scalability, fault tolerance, and a usage-based pricing model. It has been widely used in various computational research fields. Replica exchange molecular dynamics (REMD) and replica exchange statistical temperature molecular dynamics (RESTMD) are two sampling algorithms in molecular dynamics. Due to the inherent parallel feature of REMD and RESTMD, it is practical to convert them into cloud computing applications. However, the performance of REMD and RESTMD on clouds has not been extensively investigated. In our work, we implemented REMD and RESTMD in cloud computing environment through Hadoop, …

An Analysis Of Peer-To-Peer Distributed Hash Algorithms In Improving Fault Tolerance In The Hadoop Running Environment, Benjamin R. Knaus

Honors Theses

Cloud computing is a “new frontier” in the world of computing. One of the cloud architectures widely used is the Hadoop running environment. Hadoop consists of many parts—including MapReduce, TaskTrackers, and JobTrackers. Right now, there is no fault-tolerance for JobTrackers in Hadoop. This paper analyzes four different distributed hash algorithms (Pastry, Tapestry, CAN, and Chord) that could be implemented inside Hadoop to improve JobTracker fault-tolerance. We recommend Chord as the best suited for integration and improvement of Hadoop.

Improving Virtual Machine I/O Performance In Cloud Environments Via I/O Functionality Offloading, Sahan Bamunavita Gamage

Open Access Dissertations

In recent years there has been a rapid growth in the adoption of cloud computing. A key technology that drives cloud computing is virtualization. In addition to enabling multi-tenancy in cloud environments, virtualizing hosts in the cloud environments has made management of hardware resources increasingly flexible. An important consequence of virtualizing hosts in the cloud is the negative impact it has on the I/O performance of the applications running in the virtual machines.

In this dissertation, we address the important problem of alleviating the negative impact of virtualization on I/O of the virtual machines. First, we show that virtual machine …

Etis - Efficient Trust And Identity Management System For Federated Service Providers, Makarand V. Bhonsle, Nayot Poolsappasit, Sanjay K. Madria

Computer Science Faculty Research & Creative Works

With the expectation of ever-increasing network of service providers due to Cloud and Web services explosion, security of user information is a major concern when it comes to the implementation of these services. This paper addresses the issue of identity management in a typical service providers' environment without the need for a trusted third party to federate the user identity for acquainted service providers. We leverage the establishment of trust between cross-domain service providers (SPs) to themselves rather than relying on a third party that brokers the trust between service providers. The hence formed network of SPs is then ready …

Guest Editors Introduction: Cloud Computing, Manish Parashar, George K. Thiruvathukal

Computer Science: Faculty Publications and Other Works

The guest editors discuss this special issue on cloud computing, exploring how cloud platforms and abstractions can be effectively used to support real-world science and engineering applications.

Architectural Control And Value Migration In Layered Ecosystems: The Case Of Open-Source Cloud Management Platforms, Richard Tee, C. Jason Woodard

Research Collection School Of Computing and Information Systems

Our paper focuses on strategic decision making in layered business ecosystems, highlighting the role of cross-layer interactions in shaping choices about product design and platform governance. Based on evidence from the cloud computing ecosystem, we analyze how concerns about architectural control and expectations regarding future value migration influence the design of product interfaces and the degree of openness to external contributions. We draw on qualitative longitudinal data to trace the development of two open-source platforms for managing cloudbased computing resources. We focus in particular on the emergence of a layered "stack" in which these platforms must compete with both vertically …

Spring­11: Pdc In Cs1/2 And A Mobile/Cloud Intermediate Mobile/Cloud Intermediate Software Design Course, Joseph P. Kaylor, Konstantin Läufer, Chandra N. Sekharan, George K. Thiruvathukal

Computer Science: Faculty Publications and Other Works

Recent changes in the environment of Loyola University Chicago’s Department of Computer Science include a better differentiation of our four undergraduate majors, growing interest in computing among science majors, and an increased demand for graduates with mobile and cloud skills. In our continued effort to incorporate parallel and distributed computing topics into the undergraduate curriculum, we are focusing on these three existing courses:

CS1: In response to a request from the physics department, we started to offer a CS1 section aimed at majors in physics and other hard sciences this spring semester. This section includes some material on numerical methods …

A Secure And Fair Resource Sharing Model For Community Clouds, Santhosh S. Anand

Graduate Theses and Dissertations

Cloud computing has gained a lot of importance and has been one of the most discussed segment of today's IT industry. As enterprises explore the idea of using clouds, concerns have emerged related to cloud security and standardization. This thesis explores whether the Community Cloud Deployment Model can provide solutions to some of the concerns associated with cloud computing. A secure framework based on trust negotiations for resource sharing within the community is developed as a means to provide standardization and security while building trust during resource sharing within the community. Additionally, a model for fair sharing of resources is …

California State University, San Bernardino Managing Cloud Computing Resources With Cloudstack Using Kvm Hypervisor, Ian Buckner Jacobs

Theses Digitization Project

The purpose of this project is to present a detailed description of the Enterprise Cloud Computing implementation of CloudStack using KVM. It will explain the purpose and features of the system, the interfaces of the system, what the system will do, and the constraints or limitations implementing CloudStack with the hardware available for this study.

Gradebadge: Development Of A Cloud-Based Reward Application, Erwin Toni Soekianto

Theses Digitization Project

The purpose of this project is to investigate the use of cloud-based services to deliver cutting edge applications. For this purpose, a prototype of a reward application using badges, called Gradebadge, was developed to illustrate and explore this emerging paradigm.

Gradeboard: A Cloud-Based Solution For A Student Grading System, Manoj Kulkarni

Theses Digitization Project

The purpose of the GradeBoard application is to develop a mobile application as a front end to interact with data stored in a cloud-based system. It leverages cloud computing features such as auto-scaling, load-balancing and NoSQL data stores. The GradeBoard application helps instructors keep track of student activities and gives students an opportunity to know how they are performing by comparing their grades with other students through a game-like leader board interface, thus creating a competitive environment in the class. Contains source code.

Knowledge As A Service Framework For Disaster Data Management, Katarina Grolinger, Emna Mezghani, Miriam Am Capretz, Ernesto Exposito

Electrical and Computer Engineering Publications

Each year, a number of natural disasters strike across the globe, killing hundreds and causing billions of dollars in property and infrastructure damage. Minimizing the impact of disasters is imperative in today’s society. As the capabilities of software and hardware evolve, so does the role of information and communication technology in disaster mitigation, preparation, response, and recovery. A large quantity of disaster-related data is available, including response plans, records of previous incidents, simulation data, social media data, and Web sites. However, current data management solutions offer few or no integration capabilities. Moreover, recent advances in cloud computing, big data, and …

Using Mapreduce Streaming For Distributed Life Simulation On The Cloud, Atanas Radenski

Mathematics, Physics, and Computer Science Faculty Books and Book Chapters

Distributed software simulations are indispensable in the study of large-scale life models but often require the use of technically complex lower-level distributed computing frameworks, such as MPI. We propose to overcome the complexity challenge by applying the emerging MapReduce (MR) model to distributed life simulations and by running such simulations on the cloud. Technically, we design optimized MR streaming algorithms for discrete and continuous versions of Conway’s life according to a general MR streaming pattern. We chose life because it is simple enough as a testbed for MR’s applicability to a-life simulations and general enough to make our results applicable …

The Extraterritoriality Of Data Privacy Laws -- An Explosive Issue Yet To Detonate, Fred H. Cate, Christopher Kuner, Christopher Millard, Dan Jerker B. Svantesson

Articles by Maurer Faculty

No abstract provided.

A Survey Of Classical And Recent Results In Bin Packing Problem, Yoga Jaideep Darapuneni

UNLV Theses, Dissertations, Professional Papers, and Capstones

In the classical bin packing problem one receives a sequence of n items 1, 2,..., n with sizes s1, s2, . . . ,sn where each item has a fixed size in (0, 1]. One needs to find a partition of the items into sets of size1, called bins, so that the number of sets in the partition is minimized and the sum of the sizes of the pieces assigned to any bin does not exceed its capacity. This combinatorial optimization problem which is NP hard has many variants as well as online and offline versions of the problem. Though …

Resource Provisioning In Large-Scale Self-Organizing Distributed Systems, M. Brent Reynolds

Theses and Dissertations

This dissertation researches the mathematical translation of resource provisioning policy into mathematical terms and parameters to solve the on-line service placement problem. A norm called the Provisioning Norm is introduced. Theorems presented in the work show the Provisioning Norm utility function and greedy, random, local search effectively and efficiently solve the on-line problem. Caching of placements is shown to reduce the cost of change but does not improve response time performance. The use of feedback control theory is shown to be effective at significantly improving performance but increases the cost of change. The theoretical results are verified using a decentralized, …

Identity Management In A Public Iaas Cloud, William T. Skinner Iii

Masters Theses, 2010-2019

In this thesis the unique environment that is the public IaaS cloud along with its differences from a traditional data center environment has been considered. The Cloud Security Alliance (CSA), states that “Managing identities and access control for enterprise applications remains one of the greatest challenges facing IT today”. The CSA also points out that “there is a lack of consistent secure methods for extending identity management into the cloud and across the cloud” [1]. This thesis examines this challenge of managing identities in the cloud by developing a list of best practices for implementing identity management in the cloud. …

Onecloud: A Study Of Dynamic Networking In An Openflow Cloud, Gregory Stabler

All Theses

Cloud computing is a popular paradigm for accessing computing resources. It provides elastic, on-demand and pay-per-use models that help reduce costs and maintain a flexible infrastructure. Infrastructure as a Service (IaaS) clouds are becoming increasingly popular because users do not have to purchase the hardware for a private cloud, which significantly reduces costs. However, IaaS presents networking challenges to cloud providers because cloud users want the ability to customize the cloud to match their business needs. This requires providers to offer dynamic networking capabilities, such as dynamic IP addressing. Providers must expose a method by which users can reconfigure the …

Improving Backup And Restore Performance For Deduplication-Based Cloud Backup Services, Stephen Mkandawire

School of Computing: Dissertations, Theses, and Student Research

The benefits provided by cloud computing and the space savings offered by data deduplication make it attractive to host data storage services like backup in the cloud. Data deduplication relies on comparing fingerprints of data chunks, and store them in the chunk index, to identify and remove redundant data, with an ultimate goal of saving storage space and network bandwidth.

However, the chunk index presents a bottleneck to the throughput of the backup operation. While several solutions to address deduplication throughput have been proposed, the chunk index is still a centralized resource and limits the scalability of both storage capacity …

Hasbe: A Hierarchical Attribute-Based Solution For Flexible And Scalable Access Control In Cloud Computing, Zhiguo Wan, Jun'e Liu, Robert H. Deng

Research Collection School Of Computing and Information Systems

Cloud computing has emerged as one of the most influential paradigms in IT industry in recent years. Since this new computing technology requires users to entrust their valuable data to cloud providers, there have been increasing security and privacy concerns on outsourced data. Several schemes employing attribute-based encryption (ABE) have been proposed for access control of outsourced data in cloud computing; however, most of them suffer from inflexibility in implementing complex access control policies. In order to realize scalable, flexible, and fine-grained access control of outsourced data in cloud computing, in this paper we propose hierarchical attribute-set-based encryption (HASBE) by …

Ensuring Distributed Accountability For Data Sharing In The Cloud, Smitha Sundareswaran, Anna Squicciarini, Dan Lin

Computer Science Faculty Research & Creative Works

Cloud computing enables highly scalable services to be easily consumed over the Internet on an as-needed basis. a major feature of the cloud services is that users' data are usually processed remotely in unknown machines that users do not own or operate. While enjoying the convenience brought by this new emerging technology, users' fears of losing control of their own data (particularly, financial and health data) can become a significant barrier to the wide adoption of cloud services. to address this problem, in this paper, we propose a novel highly decentralized information accountability framework to keep track of the actual …

Cloud Security: A Case Study In Telemedicine, Michael Johnstone

Australian eHealth Informatics and Security Conference

Security as part of requirements engineering is now seen as an essential part of systems development in several modern methodologies. Unfortunately, medical systems are one domain where security is seen as an impediment to patient care and not as an essential part of a system. Cloud computing may offer a seamless way to allow medical data to be transferred from patient to medical practitioners, whilst maintaining security requirements. This paper uses a case study to investigate the use of cloud computing in a mobile application for Parkinson Disease. It was found that functionality took precedence over security requirements and standards.

The Challenge Of "Big Data" For Data Protection, Fred H. Cate, Christopher Kuner, Christopher Millard, Dan Jerker B. Svantesson

Articles by Maurer Faculty

No abstract provided.

Artificial Agents, Cloud Computing, And Quantum Computing: Applying Floridi’S Method Of Levels Of Abstraction, Marty J. Wolf, Frances Grodzinsky, Keith W. Miller

School of Computer Science & Engineering Faculty Publications

In his paper “On the Intrinsic Value of Information Objects and the Infosphere,” Luciano Floridi asserts that the goal of Information Ethics (IE) “is to fill an ‘ethical vacuum’ brought to light by the ICT revolution, to paraphrase Moor” (1985). He claims “IE will prove its value only if its applications bear fruit. This is the work that needs to be done in the near future” (Floridi 2002). Our chapter proposes to do part of that work. Initially we focus on Floridi’s Method of Levels of Abstraction (LoA). We begin by examining his methodology as it was first developed with …

Applying The Acpo Principles In Public Cloud Forensic Investigations, Harjinder S. Lallie, Lee Pimlott

Journal of Digital Forensics, Security and Law

The numerous advantages offered by cloud computing has fuelled its growth and has made it one of the most significant of current computing trends. The same advantages have created complex issues for those conducting digital forensic investigations. Digital forensic investigators rely on the ACPO (Association of Chief Police Officers) or similar guidelines when conducting an investigation, however the guidelines make no reference to some of the issues presented by cloud investigations. This study investigates the impact of cloud computing on ACPO’s core principles and asks whether these principles can still be applied in a cloud investigation and the challenges presented …

Energy-Aware Optimization For Embedded Systems With Chip Multiprocessor And Phase-Change Memory, Jiayin Li

Theses and Dissertations--Electrical and Computer Engineering

Over the last two decades, functions of the embedded systems have evolved from simple real-time control and monitoring to more complicated services. Embedded systems equipped with powerful chips can provide the performance that computationally demanding information processing applications need. However, due to the power issue, the easy way to gain increasing performance by scaling up chip frequencies is no longer feasible. Recently, low-power architecture designs have been the main trend in embedded system designs.

In this dissertation, we present our approaches to attack the energy-related issues in embedded system designs, such as thermal issues in the 3D chip multiprocessor (CMP), …

An Overview Of Cloud Computing Challenges And Its Security Concerns, Krishnun Sansurooah

Research outputs 2012

There has been an increasing advancement about Cloud computing during the past couple of years. Cloud computing has become a new computer model which aims to deliver reliable, customizable and scalable computing environment for end-users. Companies are choosing to move their data, applications and services to the Cloud. The advantages are significant ranging from increasing the availability, reliability, light weight, easily accessible applications, and low cost but so are the risks associated with. Companies that require application hosting could potentially benefit from the provisioning of computing infrastructure resources as a service. In addition to the economic advantages of an on-demand …

Cloud Security: A Case Study In Telemedicine, Michael Johnstone

Research outputs 2012

Security as part of requirements engineering is now seen as an essential part of systems development in several modern methodologies. Unfortunately, medical systems are one domain where security is seen as an impediment to patient care and not as an essential part of a system. Cloud computing may offer a seamless way to allow medical data to be transferred from patient to medical practitioners, whilst maintaining security requirements. This paper uses a case study to investigate the use of cloud computing in a mobile application for Parkinson Disease. It was found that functionality took precedence over security requirements and standards.

Framework To Secure Cloud-Based Medical Image Storage And Management System Communications, Timothy James Rostrom

Theses and Dissertations

Picture Archiving and Communication Systems (PACS) have been traditionally constrained to the premises of the healthcare provider. This has limited the availability of these systems in many parts of the world and mandated major costs in infrastructure for those who employ them. Public cloud services could be a solution that eases the cost of ownership and provides greater flexibility for PACS implementations. This could make it possible to bring medical imaging services to places where it was previously unavailable and reduce the costs associated with these services for those who utilize them. Moving these systems to public cloud infrastructure requires …

Privacy In "The Cloud": Applying Nissenbaum's Theory Of Contextual Integrity, Frances Grodzinsky, Herman T. Tavani

School of Computer Science & Engineering Faculty Publications

The present essay is organized into five main sections. We begin with a few preliminary remarks about "cloud computing," which are developed more fully in a later section. This is followed by a brief overview of the evolution of Helen Nissenbaum's framework of "privacy as contextual integrity." In particular, we examine Nissenbaum's "Decision Heuristic" model, described in her most recent work on privacy (Nissenabum 2010), to see how it enables the contextual-integrity framework to respond to privacy challenges posed by new and emerging technologies. We then apply that heuristic device to questions surrounding one aspect of cloud computing -- viz., …