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- Array layouts (1)
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Articles 1 - 30 of 43
Full-Text Articles in Engineering
How Can 5g Make Our Lives Better?, Firas Slewa Dawod
How Can 5g Make Our Lives Better?, Firas Slewa Dawod
English Language Institute
Our lives will be significantly improved with the advent of the new cellular wireless technology due to all its new features and applications. This Poster discusses the main features and application of 5G technology and its positive impact on society, in particular facilitating interactive and smart communities.
Indonesian Library User Behaviour During Covid 19 Pandemic On Digital Library Platform, Irhamni
Indonesian Library User Behaviour During Covid 19 Pandemic On Digital Library Platform, Irhamni
English Language Institute
COVID-19 pandemic has significantly changed library user behavior, workplaces, and some public areas including in the library. During the COVID 19 pandemics, the digital library with a mobile app like ipusnas has facilitated to accessing library resources. The ipusnas has increased people's accessibility to library materials. This research focuses on the use of the digital library has a significant impact on library users behavior; it can influence how they read, access the library, and their interaction with the library resources.
Pinpoint: Efficient And Effective Resource Isolation For Mobile Security And Privacy, Paul Ratazzi, Ashok Bommisetti, Nian Ji, Wenliang Du
Pinpoint: Efficient And Effective Resource Isolation For Mobile Security And Privacy, Paul Ratazzi, Ashok Bommisetti, Nian Ji, Wenliang Du
Electrical Engineering and Computer Science - All Scholarship
Virtualization is frequently used to isolate untrusted processes and control their access to sensitive resources. However, isolation usually carries a price in terms of less resource sharing and reduced inter-process communication. In an open architecture such as Android, this price and its impact on performance, usability, and transparency must be carefully considered. Although previous efforts in developing general-purpose isolation solutions have shown that some of these negative sideeffects can be mitigated, doing so involves overcoming significant design challenges by incorporating numerous additional platform complexities not directly related to improved security. Thus, the general purpose solutions become inefficient and burdensome if …
Instructions-Based Detection Of Sophisticated Obfuscation And Packing, Moustafa Saleh, Edward Paul Ratazzi, Shouhuai Xu
Instructions-Based Detection Of Sophisticated Obfuscation And Packing, Moustafa Saleh, Edward Paul Ratazzi, Shouhuai Xu
Electrical Engineering and Computer Science - All Scholarship
Every day thousands of malware are released online. The vast majority of these malware employ some kind of obfuscation ranging from simple XOR encryption, to more sophisticated anti-analysis, packing and encryption techniques. Dynamic analysis methods can unpack the file and reveal its hidden code. However, these methods are very time consuming when compared to static analysis. Moreover, considering the large amount of new malware being produced daily, it is not practical to solely depend on dynamic analysis methods. Therefore, finding an effective way to filter the samples and delegate only obfuscated and suspicious ones to more rigorous tests would significantly …
Interoperable Credentials Management For Wholesale Banking, Glenn Benson, Shiu-Kai Chin, Sean Croston, Karthick Jayaraman, Susan Older
Interoperable Credentials Management For Wholesale Banking, Glenn Benson, Shiu-Kai Chin, Sean Croston, Karthick Jayaraman, Susan Older
Electrical Engineering and Computer Science - All Scholarship
A gap exists between wholesale-banking business practices and security best practices: wholesale banks operate within the boundaries of contract law, while security best practices often relies upon a benevolent trusted party outside the scope of straightforward contracts. While some business domains may be able to bridge this gap, the ultra-high-value transactions used in business-to-business banking substantially increase the size of the gap. The gap becomes most apparent when regarded from the perspective of interoperability. If a single user applies the same credential to sign high-value transactions at multiple banks, then the trusted-party model becomes overly cumbersome and conflicts with an …
Reference Set Metrics For Multi-Objective Algorithms, Chilukuri K. Mohan, Kishan Mehrotra
Reference Set Metrics For Multi-Objective Algorithms, Chilukuri K. Mohan, Kishan Mehrotra
Electrical Engineering and Computer Science - All Scholarship
Several metrics and indicators have been suggested in the past to evaluate multi-objective evolutionary and non-evolutionary algo- rithms. However, these metrics are known to have many problems that make their application sometimes unsound, and sometimes infeasible. This paper proposes a new approach, in which metrics are parameter- ized with respect to a reference set, on which depend the properties of any metric.
Average Run Length Of Two-Span Moving Sum Algorithms, Swarnendu Kar, Kishan G. Mehrotra, Pramod Varshney
Average Run Length Of Two-Span Moving Sum Algorithms, Swarnendu Kar, Kishan G. Mehrotra, Pramod Varshney
Electrical Engineering and Computer Science - All Scholarship
Among the various procedures used to detect potential changes in a stochastic process the moving sum algorithms are very popular due to their intuitive appeal and good statistical performance. One of the important design parameters of a change detection algorithm is the expected interval between false positives, also known as the average run length (ARL). In this paper, we have derived closed form expressions of ARL for two special cases - namely the two-span moving sum and filtered derivative algorithms. We have assumed that the random variables are uniformly distributed.
Approximation Of Average Run Length Of Moving Sum Algorithms Using Multivariate Probabilities, Swarnendu Kar, Kishan Mehrotra, Pramod Varshney
Approximation Of Average Run Length Of Moving Sum Algorithms Using Multivariate Probabilities, Swarnendu Kar, Kishan Mehrotra, Pramod Varshney
Electrical Engineering and Computer Science - All Scholarship
Among the various procedures used to detect potential changes in a stochastic process the moving sum algorithms are very popular due to their intuitive appeal and good statistical performance. One of the important design parameters of a change detection algorithm is the expected interval between false positives, also known as the average run length (ARL). Computation of the ARL usually involves numerical procedures but in some cases it can be approximated using a series involving multivariate probabilities. In this paper, we present an analysis of this series approach by providing sufficient conditions for convergence and derive an error bound. Using …
A Clustering Based Discretization For Supervised Learning, Ankit Gupta, Kishan Mehrotra, Chilukuri K. Mohan
A Clustering Based Discretization For Supervised Learning, Ankit Gupta, Kishan Mehrotra, Chilukuri K. Mohan
Electrical Engineering and Computer Science - All Scholarship
We address the problem of discretization of continuous variables for machine learning classification algorithms. Existing procedures do not use interdependence between the variables towards this goal. Our proposed method uses clustering to exploit such interdependence. Numerical results show that this improves the classification performance in almost all cases. Even if an existing algorithm can successfully operate with continuous variables, better performance is obtained if variables are first discretized. An additional advantage of discretization is that it reduces the overall time-complexity.
Univercl 1.0 --- Phase I Of A Complete Opencl Implementation, Phil Pratt-Szeliga, Jim Fawcett
Univercl 1.0 --- Phase I Of A Complete Opencl Implementation, Phil Pratt-Szeliga, Jim Fawcett
Electrical Engineering and Computer Science - All Scholarship
Recently the Khronos group has released an open specification for OpenCL, the Open Computation Language. OpenCL strives to create a standard language for programming novel computer architectures such as the multi-core CPU, the GPU and accelerators. The programming model is similar to Nvidia's CUDA. UniverCL is a partial implementation of the OpenCL 1.0 Specification that has enough functionality to demonstrate the major components of the specification. It currently includes support for two hardware devices: the multi-core CPU and the Cell Broadband Engine. This technical report captures the work done in Phase I of UniverCL's development and outlines Phase II of …
Escudo: A Fine-Grained Protection Model For Web Browsers, Karthick Jayaraman, Wenliang Du, Balamurugan Rajagopalan, Steve J. Chapin
Escudo: A Fine-Grained Protection Model For Web Browsers, Karthick Jayaraman, Wenliang Du, Balamurugan Rajagopalan, Steve J. Chapin
Electrical Engineering and Computer Science - All Scholarship
Web applications are no longer simple hyperlinked documents. They have progressively evolved to become highly complex---web pages combine content from several sources (with varying levels of trustworthiness), and incorporate significant portions of client-side code. However, the prevailing web protection model, the same-origin policy, has not adequately evolved to manage the security consequences of this additional complexity. As a result, web applications have become attractive targets of exploitation. We argue that this disconnection between the protection needs of modern web applications and the protection models used by web browsers that manage those applications amounts to a failure of access control. In …
Mimo Communications In Ad Hoc Networks, Biao Chen, Michael J. Gans
Mimo Communications In Ad Hoc Networks, Biao Chen, Michael J. Gans
Electrical Engineering and Computer Science - All Scholarship
We study in this paper the network spectral efficiency in terms of bits/s/Hz of a MIMO (multiple-input multiple output) ad hoc network with K simultaneous communicating transmitter-receiver pairs. Assume that each transmitter is equipped with t antennas and each receiver implements single user detection. We show that in the absence of channel state information (CSI) at the transmitters, the asymptotic network spectral efficiency is limited by r nats/s/Hz as K -> ∞ and is independent of t and the transmit power. With CSI corresponding to the desired receiver available at the transmitter, we demonstrate that the asymptotic spectral efficiency is …
Mimo Communications In Ad Hoc Networks, Biao Chen, Michael J. Gans
Mimo Communications In Ad Hoc Networks, Biao Chen, Michael J. Gans
Electrical Engineering and Computer Science - All Scholarship
We study in this paper the network spectral efficiency in terms of bits/s/Hz of a MIMO (multiple-input multiple output) ad hoc network with K simultaneous communicating transmitter-receiver pairs. Assume that each transmitter is equipped with t antennas and each receiver implements single user detection. We show that in the absence of channel state information (CSI) at the transmitters, the asymptotic network spectral efficiency is limited by r nats/s/Hz as K -> ∞ and is independent of t and the transmit power. With CSI corresponding to the desired receiver available at the transmitter, we demonstrate that the asymptotic spectral efficiency is …
Analyst-Focused Arabic Information Retrieval, Robert N. Oddy, Ann R. Diekema, Jean Hannouche, Elizabeth Liddy, Grant Ingersoll
Analyst-Focused Arabic Information Retrieval, Robert N. Oddy, Ann R. Diekema, Jean Hannouche, Elizabeth Liddy, Grant Ingersoll
School of Information Studies - Faculty Scholarship
An English-Arabic Cross-Language Information Retrieval Environment was created in which the analyst can query an Arabic database in English and retrieve a set of relevant Arabic documents. The retrieved Arabic documents are automatically translated into English to facilitate readability by the English-only analyst. Proper names of people, places, and organizations are extracted from the retrieved documents and transliterated from Arabic into English. They are presented to the analyst and serve to provide a brief summarization of the retrieved document search query in English. Cross-Language Information Retrieval (CLIR), itself a desideratum in the ARDA workshop, is a special case of Information …
A Beacon-Less Location Discovery Scheme For Wireless Sensor Networks, Lei Feng, Wenliang Du, Peng Ning
A Beacon-Less Location Discovery Scheme For Wireless Sensor Networks, Lei Feng, Wenliang Du, Peng Ning
Electrical Engineering and Computer Science - All Scholarship
In wireless sensor networks (WSNs), sensor location plays a critical role in many applications. Having a GPS receiver on every sensor node is costly. In the past, a number of location discovery schemes have been proposed. Most of these schemes share a common feature: they use some special nodes, called beacon nodes, which are assumed to know their own locations (e.g., through GPS receivers or manual configuration). Other sensors discover their locations based on the information provided by these beacon nodes. In this paper, we show that efficient location discovery can be achieved in sensor networks without using beacons. We …
Attack-Resistant Location Estimation In Wireless Sensor Networks, Dongdang Liu, Peng Ning, An Liu, Cliff Wang, Wenliang Kevin Du
Attack-Resistant Location Estimation In Wireless Sensor Networks, Dongdang Liu, Peng Ning, An Liu, Cliff Wang, Wenliang Kevin Du
Electrical Engineering and Computer Science - All Scholarship
Many sensor network applications require sensors’ locations to function correctly. Despite the recent advances, location discovery for sensor networks in hostile environments has been mostly overlooked. Most of the existing localization protocols for sensor networks are vulnerable in hostile environments. The security of location discovery can certainly be enhanced by authentication. However, the possible node compromises and the fact that location determination uses certain physical features (e.g., received signal strength) of radio signals make authentication not as effective as in traditional security applications. This paper presents two methods to tolerate malicious attacks against range-based location discovery in sensor networks. The …
Making Svg A Web Service In A Message-Based Mvc Architecture, Xiaohong Qiu, Shrideep Pallickara, Ahmet Uyar
Making Svg A Web Service In A Message-Based Mvc Architecture, Xiaohong Qiu, Shrideep Pallickara, Ahmet Uyar
Electrical Engineering and Computer Science - All Scholarship
We reformulate Scalable Vector Graphics browser in a Web Service architecture separating the rendering from the W3C DOM processing of events. We describe this in a message-based Model-View-Controller (M-MVC) architecture and implement it with a powerful publish-subscribe messaging infrastructure. A Web Services oriented architecture with services loosely coupled by the exchange of messages is becoming an increasingly important feature in the deployment of Internet applications. The broad applicability of this approach includes enterprise software, e-Learning, e-Science and e-Business. Our work provides a general framework for integrating Desktop and Web Service applications. We summarize the performance results from detailed tests of …
A Predictive Sensor Network Using Ant System, Rajani Muraleedharan, Lisa Ann Osadciw
A Predictive Sensor Network Using Ant System, Rajani Muraleedharan, Lisa Ann Osadciw
Electrical Engineering and Computer Science - All Scholarship
The need for a robust predictive sensor communication network inspired this research. There are many critical issues in a communication network with different data rate requirements, limited power and bandwidth. Energy consumption is one of the key issues in a sensor network as energy dissipation occurs during routing, communication and monitoring of the environment. This paper covers the routing of a sensor communication network by applying an evolutionary algorithm- the ant system. The issues considered include optimal energy, data fusion from different sensor types and predicting changes in environment with respect to time.
A Predictive Sensor Network Using Ant System, Rajani Muraleedharan, Lisa Ann Osadciw
A Predictive Sensor Network Using Ant System, Rajani Muraleedharan, Lisa Ann Osadciw
Electrical Engineering and Computer Science - All Scholarship
The need for a robust predictive sensor communication network inspired this research. There are many critical issues in a communication network with different data rate requirements, limited power and bandwidth. Energy consumption is one of the key issues in a sensor network as energy dissipation occurs during routing, communication and monitoring of the environment. This paper covers the routing of a sensor communication network by applying an evolutionary algorithm- the ant system. The issues considered include optimal energy, data fusion from different sensor types and predicting changes in environment with respect to time.
A Framework For Aggregating Network Performance In Distributed Brokering Systems, Gurhan Gunduz, Shrideep Pallickara, Geoffrey C. Fox
A Framework For Aggregating Network Performance In Distributed Brokering Systems, Gurhan Gunduz, Shrideep Pallickara, Geoffrey C. Fox
Electrical Engineering and Computer Science - All Scholarship
The Internet is presently being used to support increasingly complex interaction models as a result of more and more applications, services and frameworks becoming network-centric. Efficient utilization of network and networked resources is of paramount importance. Network performance gathering is a precursor to any scheme that seeks to provide adaptive routing capabilities for interactions. In this paper we present a network performance aggregation framework that is extensible and appropriate for distributed messaging systems that span multiple realms, disparate communication protocols and support different applications.
Guidelines For The Development Of Computer-Based Instruction Modules For Science And Engineering, Jessica R. Lux, Barry D. Davidson
Guidelines For The Development Of Computer-Based Instruction Modules For Science And Engineering, Jessica R. Lux, Barry D. Davidson
Mechanical and Aerospace Engineering - All Scholarship
The design and development of a prototype computer-based instruction (CBI) module is described. The module covers introductory structural analysis techniques and demonstrates the practicality of CBI for undergraduate engineering education. The module’s generic learning objectives are used to develop a set of guiding principles for CBI development. Choice of authoring software and the module architecture are presented, followed by the details of the user interface, logic, and screen layout. The module design and software development process outlined here are easily extended to computer-based tutorials that present problem solving methods for engineering, mathematics, and the natural sciences.
Enabling Dynamic Market-Managed Qos Interconnection In The Next Generation Internet By A Modified Bgp Mechanism, Junseok Hwang, Jorn Altmann, Huw Oliver, Alfonso Suarez
Enabling Dynamic Market-Managed Qos Interconnection In The Next Generation Internet By A Modified Bgp Mechanism, Junseok Hwang, Jorn Altmann, Huw Oliver, Alfonso Suarez
School of Information Studies - Faculty Scholarship
We propose a market-managed QoS (Quality of Service) interconnection model for heterogeneous networking environments. The deployment of this model will help autonomous systems to reduce the cost of their network services as well as increase social welfare. We describe a technical solution for a next generation Internet, where networks are managed based on either technology requirements (QoS networks) or market principles (market-managed networks). Our solution requires two technologies: BMP (Bandwidth Management Point) and a modified version of BGP (Border Gateway Protocol). The modified version of BGP, as proposed in this paper, provides additional routing exchange information such as price and …
Exploring Strengths And Limits On Open Source Software Engineering Processes: A Research Agenda, Kevin Crowston, Barbara Scozzi
Exploring Strengths And Limits On Open Source Software Engineering Processes: A Research Agenda, Kevin Crowston, Barbara Scozzi
School of Information Studies - Faculty Scholarship
Many researchers have investigated the nature and characteristics of open source software (OSS) projects and their developer communities. In this position paper, after examining some success factors, we discuss potential limits on the replicability and portability of OSS engineering processes. Based on this analysis, we propose a research agenda to better understand the current nature of the processes and thus the strengths and the limitations.
A Scalable Durable Grid Event Service, Geoffrey C. Fox, Shrideep Pallickara
A Scalable Durable Grid Event Service, Geoffrey C. Fox, Shrideep Pallickara
Electrical Engineering and Computer Science - All Scholarship
It is interesting to study the system and software architecture of environments, which integrate the evolving ideas of computational grids, distributed objects, web services, peer-to-peer networks and message oriented middleware. Such peer-to-peer (P2P) Grids should seamlessly integrate users to themselves and to resources, which are also linked to each other. We can abstract such environments as a distributed system of "clients" which consist either of "users" or "resources" or proxies thereto. These clients must be linked together in a flexible fault tolerant efficient high performance fashion. In this paper, we study the messaging or event system -- termed GES or …
A Distributed Spectral-Screening Pct Algorithm, Tiranee Achalakul, Stephen Taylor
A Distributed Spectral-Screening Pct Algorithm, Tiranee Achalakul, Stephen Taylor
Electrical Engineering and Computer Science - All Scholarship
This paper describes a novel distributed algorithm for use in remote-sensing, medical image analysis, and surveillance applications. The algorithm combines spectral-screening classification with the principal component transform (PCT), and human-centered mapping. It fuses a multi- or hyper-spectral image set into a single color composite image that maximizes the impact of spectral variation on the human visual system. The algorithm operates on distributed collections of shared-memory multiprocessors that are connected through high-performance networking. Scenes taken from a standard 210 frame remote-sensing data set, collected with the Hyper-spectral Digital Imagery Collection Experiment (HYDICE) airborne imaging spectrometer, are used to assess the algorithms …
Enhancing Spatial Locality Via Data Layout Optimizations, Mahmut Kandemir, Alok Choudhary, J. Ramanujam, N. Shenoy
Enhancing Spatial Locality Via Data Layout Optimizations, Mahmut Kandemir, Alok Choudhary, J. Ramanujam, N. Shenoy
Electrical Engineering and Computer Science - All Scholarship
This paper aims to improve locality of references by suitably choosing array layouts. We use a new definition of spatial reuse vectors that takes into account memory layout of arrays. This capability creates two opportunities. First, it allows us to develop an array restructuring framework based on a combination of hyperplane theory and reuse vectors. Second, it allows us to observe the effect of different array layout optimizations on spatial reuse vectors. Since the iteration space based locality optimizations also change the spatial reuse vectors, our approach allows us to compare the iteration-space based and data-space based approaches in terms …
Compilation Techniques For Out-Of-Core Parallel Computations, Mahmut Kandemir, Alok Choudhary, J. Ramanujam, Rajesh Bordawekar
Compilation Techniques For Out-Of-Core Parallel Computations, Mahmut Kandemir, Alok Choudhary, J. Ramanujam, Rajesh Bordawekar
Electrical Engineering and Computer Science - All Scholarship
The difficulty of handling out-of-core data limits the performance of supercomputers as well as the potential of the parallel machines. Since writing an efficient out-of-core version of a program is a difficult task and virtual memory systems do not perform well on scientific computations, we believe that there is a clear need for compiler directed explicit I/O approach for out-of-core computations. In this paper, we first present an out-of-core compilation strategy based on a disk storage abstraction. Then we offer a compiler algorithm to optimize locality of disk accesses in out-of core codes by choosing a good combination of file …
Integrating Security Into The Curriculum, Cynthia E. Irvine, Shiu-Kai Chin, Deborah Frincke
Integrating Security Into The Curriculum, Cynthia E. Irvine, Shiu-Kai Chin, Deborah Frincke
Electrical Engineering and Computer Science - All Scholarship
The number of skilled practitioners of computer security who are able to address the complexities of modern technology and are familiar with successful approaches to system security is very small. People want security but are faced with two difficulties. First, they do not know how to achieve it in the context of their enterprises. They may not even know of a way to translate organizational procedures into policies, much less implement a set of mechanisms to enforce those policies. Second, they have no way of knowing whether their chosen mechanisms are effective. The recent US Presidential Commission on Critical Infrastructure …
A Global Computing Environment For Networked Resources, Haluk Topcuoglu, Salim Hariri
A Global Computing Environment For Networked Resources, Haluk Topcuoglu, Salim Hariri
Electrical Engineering and Computer Science - All Scholarship
Current advances in high-speed networks and WWW technologies have made network computing a cost-effective, high-performance computing alternative. New software tools are being developed to utilize efficiently the network computing environment. Our project, called Virtual Distributed Computing Environment (VDCE), is a high-performance computing environment that allows users to write and evaluate networked applications for different hardware and software configurations using a web interface. In this paper we present the software architecture of VDCE by emphasizing application development and specification, scheduling, and execution/runtime aspects.
Collaborative Scientific Data Visualization, Byeongseob Ki, Scott Klasky
Collaborative Scientific Data Visualization, Byeongseob Ki, Scott Klasky
Northeast Parallel Architecture Center
We have designed a collaborative scientific visualization package that will aid researchers from distant, diverse locations to work together in developing scientific codes, providing them with a system to analyze their scientific data. We have utilized Java to develop this infrastructure. Two important areas which we have concentrated on developing are 1) a collaborative framework from which the scientific data is interpreted and utilized, and 2) a framework, which is customizable to the suit the needs of a particular task and/or scientific group.