Auto Smart Text And E-Mail Notification System (Astens),
2012
California State University, San Bernardino
Auto Smart Text And E-Mail Notification System (Astens), Ahmed Abdulghaffar Algadi
Theses Digitization Project
The purpose of Auto Smart Text and E-mail Notification System (ASTENS) project is to provide the California State University San Bernardino and other universities with a new easy, fast, and convenient way of communication between the faculty members and their students. ASTENS (Auto Smart Text and E-mail Notification System) provides two types of communication: class notifications and grade notifications. First, the class notifications allow an instructor to communicate with students registered in his/her class by using his/her cell phone or email. These notifications could be any message related to class (e.g. notes, reminder, announcement, etc.) and every student will be …
Jumpstarting A Global Mobile Computing Lab At Pace University,
2012
Seidenberg School of Computer Sience and Information Systems
Jumpstarting A Global Mobile Computing Lab At Pace University, Christelle Scharff
Cornerstone 2 Reports : Community Outreach and Empowerment Through Service Learning and Volunteerism
Mobile applications are the future of computing. This project focuses on jumpstarting a mobile lab at Pace University. It reaches out to the university community and beyond by integrating different events including a competition on mobile application development and hosting external speakers. A high school event and a panel discussion with experts in the field are planned.
Current-Based Diagnosis For Gear Tooth Breaks In
Wind Turbine Gearboxes,
2012
University of Nebraska-Lincoln
Current-Based Diagnosis For Gear Tooth Breaks In Wind Turbine Gearboxes, Dingguo Lu, Xiang Gong, Wei Qiao
Department of Electrical and Computer Engineering: Faculty Publications
Gearbox faults constitute a significant portion of all faults and downtime in wind turbines (WTs). Current-based gearbox fault diagnosis has significant advantages over traditional vibration-based techniques in terms of cost, implementation, and reliability. This paper derives a mathematical model for a WT drive train consisting of a twostage gearbox and a permanent magnet (PM) generator, from which the characteristic frequencies of gear tooth breaks in generator stator current frequency spectra are clearly identified. A adaptive signal resampling algorithm is proposed to convert the variable fault characteristic frequencies to constant values for WTs running at variable speeds. A fault detector is …
Energy Efficiency In Multiaccess Fading Channels Under Qos Constraints,
2012
University of Nebraska-Lincoln
Energy Efficiency In Multiaccess Fading Channels Under Qos Constraints, Deli Qiao, Mustafa Cenk Gursoy, Senem Velipasalar
Department of Electrical and Computer Engineering: Faculty Publications
In this article, transmission over multiaccess fading channels under quality-of-service (QoS) constraints is studied in the low-power and wideband regimes. 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 the performance metric. A two-user multiaccess channel model is considered, and the minimum bit energy levels and wideband slope regions are characterized for different transmission and reception strategies, namely time-division multiple-access (TDMA), superposition coding with fixed decoding order, and superposition coding with variable decoding order. It is shown …
Matching And Funneling Light At The Plasmonic Brewster Angle,
2012
University of Texas at Austin
Matching And Funneling Light At The Plasmonic Brewster Angle, Christos Argyropoulos, Giuseppe D'Aguanno, Nadia Mattiucci, Neset Akozbek, Mark J. Bloemer, Andrea Alu
Department of Electrical and Computer Engineering: Faculty Publications
The ultrabroadband impedance matching of metallic gratings at the plasmonic Brewster angle [A. Al`u et al., Phys. Rev. Lett. 106, 123902 (2011)] is analyzed here in several realistic scenarios and configurations, and in the case of nonmonochromatic excitation. This phenomenon is the analogy of the well-known Brewster transmission for dielectric slabs but, when applied to plasmonic gratings, has the remarkable property of funneling and concentrating light within subwavelength slits. We analyze here how the presence of absorption and of realistic substrates and/or superstrates may influence the phenomenon, its beamwidth and angular selectivity, and its overall performance in the case …
Lte Phy Performance Analysis Under 3gpp Standards Parameters,
2012
University of Nebraska-Lincoln
Lte Phy Performance Analysis Under 3gpp Standards Parameters, Fahimeh Rezaei, Michael Hempel, Hamid Sharif
Department of Electrical and Computer Engineering: Faculty Publications (to 2015)
Long Term Evolution (LTE) has been introduced by 3GPP (3rd Generation Partnership Project) and is poised to dominate the 4th generation (4G) of mobile telecommunication networks. In this article, we present an in-depth analysis of the LTE physical layer’s characteristics and its performance. Our work is unique in providing a detailed performance study based on Release 8 of the 3GPP standard. Several works have discussed the LTE performance; however, most have been restricted to limited scenarios. Our work shows a more comprehensive investigation of the maximum data throughput under different conditions and scenarios. Our performance study includes TDD and FDD …
Performance Analysis For Direction Of Arrival
Estimating Algorithms,
2012
University of Nebraska Lincoln
Performance Analysis For Direction Of Arrival Estimating Algorithms, Pradhumna Shrestha, Michael Hempel, Puttipong Mahasukhon, Tao Ma, Hamid Sharif
Department of Electrical and Computer Engineering: Faculty Publications (to 2015)
Smart antennas have emerged as one of the most promising directions in supporting maximum communication link throughput. In this paper, we have investigated the impact of smart antennas on a complex mobile network such as a railroad wireless communications system. The objective is to analyze the selection of a Direction-Of-Arrival (DOA) estimation algorithm which provides the maximum efficiency when deployed in our railroad testbeds for wireless vehicular communication. Our findings are discussed to provide an indepth understanding of how different algorithms should be selected to support efficient network operations.
Quantitative Performance Analysis Of 3.65 Ghz
Mobile Wimax,
2012
University of Nebraska Lincoln
Quantitative Performance Analysis Of 3.65 Ghz Mobile Wimax, Pradhumna Shrestha, Michael Hempel, Puttipong Mahasukhon, Tao Ma, Hamid Sharif
Department of Electrical and Computer Engineering: Faculty Publications (to 2015)
3.65 GHz Mobile WiMAX spectrum is often a better commercial solution due to its attractive licensing requirements, in spite of the slightly lower coverage area. However, no significant performance data has been reported for 3.65 GHz equipment behavior. In this paper, we have presented an in depth analysis of a 3.65 GHz Mobile WiMAX solution. Our reported data can also contribute in performing link budget analyses and benchmarking similar equipment.
Impact Of Wireless Communication Delay On
Load Sharing Among Distributed Generation
Systems Through Smart Microgrids,
2012
University of Nebraska-Lincoln
Impact Of Wireless Communication Delay On Load Sharing Among Distributed Generation Systems Through Smart Microgrids, Song Ci, Junjie Qian, Dalei Wu, Ali Keyhani
Department of Electrical and Computer Engineering: Faculty Publications (to 2015)
Load sharing among distributed generation systems (DGS) is one of the most important topics in wireless-enabled smart microgrids, where a set of power inverters at different geographical locations work coordinately and collaboratively through wireless networks to meet the load requirement. Parallel power inverters operated in distributed generation systems rely on the underlying wireless communication channels to exchange power information among them for load sharing control. However, existing work in the area of load sharing has largely ignored the effect of wireless communication delay. Study has shown that the time-varying wireless communication delay may have a significant impact on the performance …
Forensic Analysis Of Social Networking Applications On Mobile Devices,
2012
Zayed University
Forensic Analysis Of Social Networking Applications On Mobile Devices, Noora Al Mutawa, Ibrahim Baggili, Andrew Marrington
Electrical & Computer Engineering and Computer Science Faculty Publications
The increased use of social networking applications on smartphones makes these devices a goldmine for forensic investigators. Potential evidence can be held on these devices and recovered with the right tools and examination methods. This paper focuses on conducting forensic analyses on three widely used social networking applications on smartphones: Facebook, Twitter, and MySpace. The tests were conducted on three popular smartphones: BlackBerrys, iPhones, and Android phones. The tests consisted of installing the social networking applications on each device, conducting common user activities through each application, acquiring a forensically sound logical image of each device, and performing manual forensic analysis …
Novelty-Assisted Interactive Evolution Of Control Behaviors,
2012
University of Central Florida
Novelty-Assisted Interactive Evolution Of Control Behaviors, Brian G. Woolley
Electronic Theses and Dissertations
The field of evolutionary computation is inspired by the achievements of natural evolution, in which there is no final objective. Yet the pursuit of objectives is ubiquitous in simulated evolution because evolutionary algorithms that can consistently achieve established benchmarks are lauded as successful, thus reinforcing this paradigm. A significant problem is that such objective approaches assume that intermediate stepping stones will increasingly resemble the final objective when in fact they often do not. The consequence is that while solutions may exist, searching for such objectives may not discover them. This problem with objectives is demonstrated through an experiment in this …
Simulation Visualization Rhetoric And It's Practical Implications,
2012
Old Dominion University
Simulation Visualization Rhetoric And It's Practical Implications, D'An Knowles Ball, Andrew J. Collins
Engineering Management & Systems Engineering Faculty Publications
Modeling and simulation has moved far beyond simple data representation into the world of visual communication over the past 15 years; ultimately, the acceptance of M&S within mainstream science and society will depend on the results that are produced visually. A simulation’s function is of primary importance to its end result, but it cannot be denied that the discipline of M&S now prizes fancy graphics to communicate. Rhetorical methodological decisions have the greatest impact on the end user, and considerations that bring visual rhetoric to modeling and simulation should be examined as a necessity to application. This paper will expose …
Kinect And 3d Gis In Archaeology,
2012
University of Nebraska-Lincoln
Kinect And 3d Gis In Archaeology, Heather Richards-Rissetto, Fabio Remondino, Jim Robersson, Jennifer Von Schwerin, Giorgio Agugiaro, Gabrio Girardi
Department of Anthropology: Faculty Publications
This paper explores the potential of using Microsoft's Kinect to create a low-cost and portable system to virtually navigate, through a prototype 3D GIS, the digitally reconstructed ancient Maya city and UNESCO World Heritage Site of Copan in Honduras. The 3D GIS, named QueryArch3D, was developed as part of the MayaArch3D project (http://mayaarch3d.unm.edu), which explores the possibilities of integrating databases and 3D digital tools for research and teaching on ancient architectures and landscapes. The developed system, based on the Flexible Action and Articulated Skeleton Toolkit (FAAST), controls in a remote and touchless mode the movements in the 3D environment in …
Correction Of An Augmentation Bound Analysis For Parallel Real-Time Tasks,
2012
Washington University in St Louis
Correction Of An Augmentation Bound Analysis For Parallel Real-Time Tasks, Abusayeed Saifullah, Kunal Agrawal, Chenyang Lu, Christopher Gill
All Computer Science and Engineering Research
This paper proposes some significant corrections in a recent work of Lakshmanan et al on parallel task scheduling. Lakshmanan et al have proposed a transformation of parallel tasks into sequential tasks, and have claimed a resource augmentation bound of 3:42 for partitioned deadline monotonic (DM) scheduling of the transformed tasks. We demonstrate that their analysis for resource augmentation bound is incorrect. We propose a different technique for task transformation that requires a resource augmentation bound of 5 for partitioned DM scheduling.
Accounting For Failures In Delay Analysis For Wirelesshart Networks ,
2012
Washington University in St Louis
Accounting For Failures In Delay Analysis For Wirelesshart Networks , Abusayeed Saifullah, Paras Babu Tiwari, Bo Li, Chenyang Lu [email protected]
All Computer Science and Engineering Research
WirelessHART networks are gaining ground as a real-time communication infrastructure in industrial wireless control systems. Because wireless communication is often susceptible to transmission failures in industrial environments, it is essential to account for failures in the delay analysis for realtime flows between sensors and actuators in process control. WirelessHART networks handle transmission failures through retransmissions using dedicated and shared time slots through different paths in the routing graphs. While these mechanisms for handling transmission failures are critical for process control requiring reliable communication, they introduce substantial challenges to worst-case end-to-end delay analysis for real-time flows. This paper presents the first …
Real-Time Scheduling Of Parallel Tasks Under A General Dag Model,
2012
Washington University in St Louis
Real-Time Scheduling Of Parallel Tasks Under A General Dag Model, Abusayeed Saifullah, David Ferry, Chenyang Lu, Christopher Gill
All Computer Science and Engineering Research
Due to their potential to deliver increased performance over single-core processors, multi-core processors have become mainstream in processor design. Computation-intensive real-time systems must exploit intra-task parallelism to take full advantage of multi-core processing. However, existing results in real-time scheduling of parallel tasks focus on restrictive task models such as the synchronous model where a task is a sequence of alternating parallel and sequential segments, and parallel segments have threads of execution that are of equal length. In this paper, we address a general model for deterministic parallel tasks, where a task is represented as a DAG with different nodes having …
Youpon,
2012
Washington University in St Louis
Youpon, Garrison Prinslow
All Computer Science and Engineering Research
This project was motivated by two related ideas: what can be learned about the unique issues involved with developing cloud-based mobile applications; and, what application could be developed to evaluate these characteristics that would also be innovative and provide value to users. After vetting ideas for the latter objective, it was clear that a new digital coupon system could offer value and apply interesting technologies to computer science problems, such as shortest path calculation, position-aware authentication, game theory, and statistical reasoning. A brief summary of the motivation for developing the new digital coupon system follows.
Ride: A Mixed-Mode Control Interface For Mobile Robot Teams,
2012
Washington University in St Louis
Ride: A Mixed-Mode Control Interface For Mobile Robot Teams, Erik Karulf, Marshall Strother, Parker Dunton, William D. Smart
All Computer Science and Engineering Research
There is a growing need for robot control interfaces that allow a single user to effectively control a large number of mostly-autonomous robots. The challenges in controlling such a collection of robots are very similar to the challenges of controlling characters in some genres of video games. In this paper, we argue that interfaces based on elements from computer video games are effective tools for the control of large robot teams. We present RIDE, the Robot Interactive Display Environment, an example of such an interface, and give the results of initial user studies with the interface, which lend support to …
Common Dma Engine Interface,
2012
Washington University in St Louis
Common Dma Engine Interface, Roger Alessi
All Computer Science and Engineering Research
Circuit boards with Field Programmable Gate Arrays (FPGAs) have a historically diverse set of standards for communicating with other devices. This provides a challenge for developers creating FPGA applications and makes migration of applications from one board or FPGA to another difficult. Many board manufacturers, including Xilinx and GiDEL, create boards with Peripheral Component Interconnect Express (PCIe) buses. PCIe provides a low-level standard for transferring data between a Central Processing Unit (CPU) and an FPGA, and these manufacturers have designed Direct Memory Access (DMA) engines to implement the standard. However, each manufacturer’s DMA engines do not share a standard interface, …
Specializing Interfaces For Citizen Science Segmentation Of Volumetric Data,
2012
Washington University in St Louis
Specializing Interfaces For Citizen Science Segmentation Of Volumetric Data, Michelle Vaughan, Cindy Grimm, Ruth Sowell, Robert Pless, Stephen Kobourov
All Computer Science and Engineering Research
Segmentation of 3D and time-varying volumetric (4D) image data is considered a time and resource intensive bottleneck in scientific endeavors. Automatic methods are becoming more reliable, but many data sets still require manual intervention. This can mainly be attributed to the characteristics of the image data not being amenable to automated methods, the existence of variations in or poor image quality, or the need for an expert to review and edit results from an automatic technique. Manually segmenting volumetric data is a challenge even for those more experienced. Understanding the 3D nature of the data and navigating through the 3D …
