University of Nebraska

Displaying 1-20 of 20 results

  • White Papers // Aug 2013

    Energy Analysis of Hadoop Cluster Failure Recovery

    Energy efficiency is now used as an important metric for evaluating a computing system. However, saving energy is a big challenge due to many constraints. For example, in one of the most popular distributed processing frameworks, hadoop, three replicas of each data block are randomly distributed in order to improve...

    Provided By University of Nebraska

  • White Papers // May 2013

    Effect of Business Intelligence and IT Infrastructure Flexibility on Organizational Agility

    There is a growing use of Business Intelligence (BI) for better management decisions in different industries. However, empirical studies on BI are still scarce in academic research. This paper investigates BI from an organizational agility perspective. Organizational agility is the ability to sense and respond to market opportunities and threats...

    Provided By University of Nebraska

  • White Papers // May 2013

    Impact of Business Intelligence and IT Infrastructure Flexibility on Competitive Performance: An Organizational Agility Perspective

    There is a growing usage of Business Intelligence (BI) for better management decisions in different industries. However, empirical studies on BI are still scarce. In this paper, the authors study BI from an organizational agility perspective. Organizational agility is the ability to sense and respond to market opportunities and threats...

    Provided By University of Nebraska

  • White Papers // Nov 2012

    Constructing Backbone of a Multi-Hop Cognitive Radio Network With Channel Bonding

    In this paper, the authors propose a backbone construction scheme for Multi-hop Wireless Cognitive Radio Networks (MWCRN) with a channel bonding technique. In their proposed scheme, the backbone is established purely in licensed bands using Cognitive Radio (CR) technology. They introduce a channel bonding technique to get higher performance of...

    Provided By University of Nebraska

  • White Papers // Aug 2012

    Efficient Quasigroup Block Cipher for Sensor Networks

    The authors present a new quasi-group based block encryption system with and without cipher-block-chaining. They compare its performance against Advanced Encryption Standard-256 (AES256) bit algorithm using the NIST Statistical Test Suite (NIST-STS) that tests for randomness of a sequence. Since it is well known that a good encryption algorithm must...

    Provided By University of Nebraska

  • White Papers // May 2012

    A Quality-Preserving Hidden Information Removal Approach for Digital Images

    In this paper, the authors introduce a novel algorithm to destroy the steganographic information embedded in an image without changing the quality of the image and with no prior knowledge of the used steganography scheme. They propose the new Neighbor Class Displacement (NCD) algorithm, which arranges the pixels of an...

    Provided By University of Nebraska

  • White Papers // May 2012

    A Transcoding Framework With Error-Resilient Video/Depth Rate Allocation for Mobile 3D Video Streaming

    With the development of wireless multimedia communication, mobile 3D video will be gradually popular as it can make people enjoy the natural 3D experience anywhere and anytime. In the current stage, mobile 3D video is usually distributed over the error-prone and heterogeneous network which consists of wire-line and wireless channels....

    Provided By University of Nebraska

  • White Papers // May 2012

    Energy Efficiency in Multiaccess Fading Channels Under QoS Constraints

    In this paper, transmission over multi-access fading channels under QoS constraints is studied in the low power regime. QoS constraints are imposed as limitations on the buffer violation probability. The effective capacity, which characterizes the maximum constant arrival rates in the presence of such statistical QoS constraints, is employed as...

    Provided By University of Nebraska

  • White Papers // Oct 2011

    Integration Testing of Software Product Lines Using Compositional Symbolic Execution

    Software product lines are families of products defined by feature commonality and variability, with a well-managed asset base. Recent work in testing of software product lines has exploited similarities in different development phases to reuse shared assets and reduce test effort. The use of feature dependence graphs has also been...

    Provided By University of Nebraska

  • White Papers // Apr 2011

    SiLo: A Similarity-Locality Based Near-Exact Deduplication Scheme With Low RAM Overhead and High Throughput

    Data deduplication is becoming increasingly popular in storage systems as a space-efficient approach to data backup and archiving. Most existing state-of-the-art deduplication methods are either locality based or similarity based, which, according to the authors' analysis, do not work adequately in many situations. While the former produces poor deduplication throughput...

    Provided By University of Nebraska

  • White Papers // Mar 2011

    A Reliable Energy-Efficient Multi-Level Routing Algorithm for Wireless Sensor Networks Using Fuzzy Petri Nets

    A reliable energy-efficient multi-level routing algorithm in wireless sensor networks is proposed. The proposed algorithm considers the residual energy, number of the neighbors and centrality of each node for cluster formation, which is critical for well-balanced energy dissipation of the network. In the algorithm, a knowledge-based inference approach using fuzzy...

    Provided By University of Nebraska

  • White Papers // Feb 2011

    Factoring Web Tables

    Automatic interpretation of web tables can enable database-like semantic search over the plethora of information stored in tables on the web. The authors' table interpretation method presented here converts the two-dimensional hierarchy of table headers, which provides a visual means of assimilating complex data, into a set of strings that...

    Provided By University of Nebraska

  • White Papers // Oct 2010

    Adaptive Optical Wireless Networks: End-to-End Link Delay Optimization

    Wireless communications offer an attractive option for many military, commercial as well as personal communication needs because of flexibility, cost effectiveness, and mobility. The quality features of wireless communications have led to tremendous growth in the demand for wireless networks and has led to development of novel technologies that raise...

    Provided By University of Nebraska

  • White Papers // Apr 2010

    Relay Beamforming Strategies for Physical-Layer Security

    In this paper, collaborative use of relays to form a beamforming system and provide physical-layer security is investigated. In particular, Amplify-and-Forward (AF) relay beamforming designs under total and individual relay power constraints are studied with the goal of maximizing the secrecy rates when perfect Channel State Information (CSI) is available....

    Provided By University of Nebraska

  • White Papers // Mar 2010

    The Coordination Pyramid: A Perspective on the State of the Art in Coordination Technology

    Any software development project uses software tools that assist its developers in coordinating their efforts. These tools, termed coordination technologies in this paper, have undergone remarkable changes over time in the functionality that they offer. The authors contribute a novel perspective on this historical trend with the Coordination Pyramid, a...

    Provided By University of Nebraska

  • White Papers // Oct 2009

    Secure Communication in the Low-SNR Regime

    Secrecy capacity of a multiple-antenna wiretap channel is studied in the low signal-to-noise ratio (SNR) regime. Expressions for the first and second derivatives of the secrecy capacity with respect to SNR at SNR = 0 are derived. Transmission strategies required to achieve these derivatives are identified. Secrecy capacity of a...

    Provided By University of Nebraska

  • White Papers // Jun 2009

    Perceived Effort Saved's Influence On Perceptions Of Effort And Accuracy

    The cost-benefit framework is a well established behavioral decision making theory and has shown remarkable consistency across a wide range of studies. One of the frameworks main tenets is that decision makers want to minimize effort (Cost) and maximize accuracy (Benefit) when making a decision. Research suggests that decision makers...

    Provided By University of Nebraska

  • White Papers // Feb 2009

    Configuration Aware Prioritization Techniques in Regression Testing

    Configurable software lets users customize applications in many ways, and is becoming increasingly prevalent. Regression testing is an important but expensive way to build confidence that software changes introduce no new faults as software evolves, resulting in many attempts to improve its performance given limited resources. Whereas problems such as...

    Provided By University of Nebraska

  • White Papers // Dec 2008

    WiMAX: Taxonomy

    Technology has made the world a lot smaller. One of the key advancements was the advent of the internet. The internet has made access to information a lot simpler and easier. But since the beginning the availability and speed of access have been the key factors to the internet. WI-FI...

    Provided By University of Nebraska

  • White Papers // Jan 2008

    ASP Effects in the Small Sized Enterprise: A Case of Bizmeka of Korea Telecom

    An Application Service Provider (ASP) is a business model providing Information Technology (IT) enabled solutions to customers over the Internet. Utilizing an ASP model, Small and Medium-sized Enterprises (SMEs) can acquire affordable IT solutions. Korea Telecom (KT), a leading IT company in Korea, provides an ASP service called Bizmeka to...

    Provided By University of Nebraska

  • White Papers // Nov 2012

    Constructing Backbone of a Multi-Hop Cognitive Radio Network With Channel Bonding

    In this paper, the authors propose a backbone construction scheme for Multi-hop Wireless Cognitive Radio Networks (MWCRN) with a channel bonding technique. In their proposed scheme, the backbone is established purely in licensed bands using Cognitive Radio (CR) technology. They introduce a channel bonding technique to get higher performance of...

    Provided By University of Nebraska

  • White Papers // May 2013

    Effect of Business Intelligence and IT Infrastructure Flexibility on Organizational Agility

    There is a growing use of Business Intelligence (BI) for better management decisions in different industries. However, empirical studies on BI are still scarce in academic research. This paper investigates BI from an organizational agility perspective. Organizational agility is the ability to sense and respond to market opportunities and threats...

    Provided By University of Nebraska

  • White Papers // May 2013

    Impact of Business Intelligence and IT Infrastructure Flexibility on Competitive Performance: An Organizational Agility Perspective

    There is a growing usage of Business Intelligence (BI) for better management decisions in different industries. However, empirical studies on BI are still scarce. In this paper, the authors study BI from an organizational agility perspective. Organizational agility is the ability to sense and respond to market opportunities and threats...

    Provided By University of Nebraska

  • White Papers // Dec 2008

    WiMAX: Taxonomy

    Technology has made the world a lot smaller. One of the key advancements was the advent of the internet. The internet has made access to information a lot simpler and easier. But since the beginning the availability and speed of access have been the key factors to the internet. WI-FI...

    Provided By University of Nebraska

  • White Papers // Jun 2009

    Perceived Effort Saved's Influence On Perceptions Of Effort And Accuracy

    The cost-benefit framework is a well established behavioral decision making theory and has shown remarkable consistency across a wide range of studies. One of the frameworks main tenets is that decision makers want to minimize effort (Cost) and maximize accuracy (Benefit) when making a decision. Research suggests that decision makers...

    Provided By University of Nebraska

  • White Papers // Mar 2010

    The Coordination Pyramid: A Perspective on the State of the Art in Coordination Technology

    Any software development project uses software tools that assist its developers in coordinating their efforts. These tools, termed coordination technologies in this paper, have undergone remarkable changes over time in the functionality that they offer. The authors contribute a novel perspective on this historical trend with the Coordination Pyramid, a...

    Provided By University of Nebraska

  • White Papers // Feb 2011

    Factoring Web Tables

    Automatic interpretation of web tables can enable database-like semantic search over the plethora of information stored in tables on the web. The authors' table interpretation method presented here converts the two-dimensional hierarchy of table headers, which provides a visual means of assimilating complex data, into a set of strings that...

    Provided By University of Nebraska

  • White Papers // Feb 2009

    Configuration Aware Prioritization Techniques in Regression Testing

    Configurable software lets users customize applications in many ways, and is becoming increasingly prevalent. Regression testing is an important but expensive way to build confidence that software changes introduce no new faults as software evolves, resulting in many attempts to improve its performance given limited resources. Whereas problems such as...

    Provided By University of Nebraska

  • White Papers // Oct 2010

    Adaptive Optical Wireless Networks: End-to-End Link Delay Optimization

    Wireless communications offer an attractive option for many military, commercial as well as personal communication needs because of flexibility, cost effectiveness, and mobility. The quality features of wireless communications have led to tremendous growth in the demand for wireless networks and has led to development of novel technologies that raise...

    Provided By University of Nebraska

  • White Papers // Aug 2012

    Efficient Quasigroup Block Cipher for Sensor Networks

    The authors present a new quasi-group based block encryption system with and without cipher-block-chaining. They compare its performance against Advanced Encryption Standard-256 (AES256) bit algorithm using the NIST Statistical Test Suite (NIST-STS) that tests for randomness of a sequence. Since it is well known that a good encryption algorithm must...

    Provided By University of Nebraska

  • White Papers // Mar 2011

    A Reliable Energy-Efficient Multi-Level Routing Algorithm for Wireless Sensor Networks Using Fuzzy Petri Nets

    A reliable energy-efficient multi-level routing algorithm in wireless sensor networks is proposed. The proposed algorithm considers the residual energy, number of the neighbors and centrality of each node for cluster formation, which is critical for well-balanced energy dissipation of the network. In the algorithm, a knowledge-based inference approach using fuzzy...

    Provided By University of Nebraska

  • White Papers // Oct 2011

    Integration Testing of Software Product Lines Using Compositional Symbolic Execution

    Software product lines are families of products defined by feature commonality and variability, with a well-managed asset base. Recent work in testing of software product lines has exploited similarities in different development phases to reuse shared assets and reduce test effort. The use of feature dependence graphs has also been...

    Provided By University of Nebraska

  • White Papers // May 2012

    A Quality-Preserving Hidden Information Removal Approach for Digital Images

    In this paper, the authors introduce a novel algorithm to destroy the steganographic information embedded in an image without changing the quality of the image and with no prior knowledge of the used steganography scheme. They propose the new Neighbor Class Displacement (NCD) algorithm, which arranges the pixels of an...

    Provided By University of Nebraska

  • White Papers // May 2012

    A Transcoding Framework With Error-Resilient Video/Depth Rate Allocation for Mobile 3D Video Streaming

    With the development of wireless multimedia communication, mobile 3D video will be gradually popular as it can make people enjoy the natural 3D experience anywhere and anytime. In the current stage, mobile 3D video is usually distributed over the error-prone and heterogeneous network which consists of wire-line and wireless channels....

    Provided By University of Nebraska

  • White Papers // May 2012

    Energy Efficiency in Multiaccess Fading Channels Under QoS Constraints

    In this paper, transmission over multi-access fading channels under QoS constraints is studied in the low power regime. QoS constraints are imposed as limitations on the buffer violation probability. The effective capacity, which characterizes the maximum constant arrival rates in the presence of such statistical QoS constraints, is employed as...

    Provided By University of Nebraska

  • White Papers // Apr 2010

    Relay Beamforming Strategies for Physical-Layer Security

    In this paper, collaborative use of relays to form a beamforming system and provide physical-layer security is investigated. In particular, Amplify-and-Forward (AF) relay beamforming designs under total and individual relay power constraints are studied with the goal of maximizing the secrecy rates when perfect Channel State Information (CSI) is available....

    Provided By University of Nebraska

  • White Papers // Oct 2009

    Secure Communication in the Low-SNR Regime

    Secrecy capacity of a multiple-antenna wiretap channel is studied in the low signal-to-noise ratio (SNR) regime. Expressions for the first and second derivatives of the secrecy capacity with respect to SNR at SNR = 0 are derived. Transmission strategies required to achieve these derivatives are identified. Secrecy capacity of a...

    Provided By University of Nebraska

  • White Papers // Apr 2011

    SiLo: A Similarity-Locality Based Near-Exact Deduplication Scheme With Low RAM Overhead and High Throughput

    Data deduplication is becoming increasingly popular in storage systems as a space-efficient approach to data backup and archiving. Most existing state-of-the-art deduplication methods are either locality based or similarity based, which, according to the authors' analysis, do not work adequately in many situations. While the former produces poor deduplication throughput...

    Provided By University of Nebraska

  • White Papers // Jan 2008

    ASP Effects in the Small Sized Enterprise: A Case of Bizmeka of Korea Telecom

    An Application Service Provider (ASP) is a business model providing Information Technology (IT) enabled solutions to customers over the Internet. Utilizing an ASP model, Small and Medium-sized Enterprises (SMEs) can acquire affordable IT solutions. Korea Telecom (KT), a leading IT company in Korea, provides an ASP service called Bizmeka to...

    Provided By University of Nebraska

  • White Papers // Aug 2013

    Energy Analysis of Hadoop Cluster Failure Recovery

    Energy efficiency is now used as an important metric for evaluating a computing system. However, saving energy is a big challenge due to many constraints. For example, in one of the most popular distributed processing frameworks, hadoop, three replicas of each data block are randomly distributed in order to improve...

    Provided By University of Nebraska