Computer Engineering Commons^™

Data And Network Optimization Effect On Web Performance, Steven Rosenberg, Surbhi Dangi, Isuru Warnakulasooriya

Surbhi Dangi

In this study, we measure the effects of two software approaches to improving data and network performance: 1. Content optimization and compression; and 2. Optimizing network protocols. We achieve content optimization and compression by means of BoostEdge by ActivNetworks and employ the SPDY network protocol by Google to lower the round trip time for HTTP transactions. Since the data and transport layers are separate, we conclude our investigation by studying the combined effect of these two techniques on web performance. Using document mean load time as the measure, we found that with and without packet loss, both BoostEdge and SPDY …

Parallel Computation In Communication And Signal Processing, Amean Al_Safi, Bradley Bazuin, Liqaa Alhafadhi

Amean S Al_Safi

The powerful computation of GPU has increased the computation speed up of many systems. This paper summarize some of the most important work in the field of communication and signal processing using GPU

Session D-4: Coolhub.Imsa: Collaborative Innovation In Action, Carl Heine, James Gerry

Carl Heine

Transform STEM teaching and learning with CoolHub.IMSA, a free virtual platform where youth and adults collaborate on projects they create. Explore the site through the eyes of project members and discover powerful ways to collaborate, innovate and network for learning.

Diversified Users' Satisfaction With Advanced Mobile Phone Features, Chen Ling, Wonil Hwang, Gavriel Salvendy

Dr. Chen Ling

Mobile phones are widely used all over the world, and with their increasing number of value-added features, they are becoming far more than a mere mobile voice communication device. Rather, they provide a powerful platform for accessing information universally. This paper reports a study which scrutinized users’ preference levels with five new mobile phone design features facilitating universal information access through mobile phones: camera, colour screen, voice-activated dialing, Internet browsing, and wireless connectivity (e.g. Bluetooth, infrared, etc.). The survey study involved college students and investigated the degree to which each of the above features impacts the users’ overall satisfaction and …

Effect Of Glance Duration On Perceived Complexity And Segmentation Of User Interfaces, Yifei Dong, Chen Ling, Lesheng Hua

Dr. Chen Ling

Computer users who handle complex tasks like air traffic control (ATC) need to quickly detect updated information from multiple displays of graphical user interface. The objectives of this study are to investigate how much computer users can segment GUI display into distinctive objects within very short glances and whether human perceives complexity differently after different durations of exposure. Subjects in this empirical study were presented with 20 screenshots of web pages and software interfaces for different short durations (100ms, 500ms, 1000ms) and were asked to recall the visual objects and rate the complexity of the images. The results indicate that …

Crowdsourced Earthquake Early Warning, Sarah Minson, Benjamin Brooks, Craig Glennie, Jessica Murray, John Langbein, Susan Owen, Thomas Heaton, Robert Iannucci, Darren Hauser

Robert A Iannucci

Earthquake early warning (EEW) can reduce harm to people and infrastructure from earthquakes and tsunamis, but it has not been implemented in most high earthquake-risk regions because of prohibitive cost. Common consumer devices such as smartphones contain low-cost versions of the sensors used in EEW. Although less accurate than scientific-grade instruments, these sensors are globally ubiquitous. Through controlled tests of consumer devices, simulation of an Mw (moment magnitude) 7 earthquake on California’s Hayward fault, and real data from the Mw 9 Tohoku-oki earthquake, we demonstrate that EEW could be achieved via crowdsourcing.

Analyzing Wi­Fi P2p In The Context Of A Hangman Game, William L. Honig

William L Honig

Wi­Fi P2P , which complies with the Wi­Fi Alliance's Wi­Fi Direct™ certification

2 3

program, is a relatively new addition to wireless communications systems. It is now

supported in Android operating system (since version 4.0). In theory, Wi­Fi Direct offers

advantages for ad hoc communications between mobile apps. A key goal of this project

was to evaluate the ability of Wi­Fi P2P for interconnecting mobile apps by using a

common game suitable to mobile screens and devices.

The application allows the user to interconnect two devices using Wi­Fi P2P and

play the classic hangman game. The players search for devices …

Supporting Teacher Orchestration In Ubiquitous Learning Environments: A Study In Primary Education, Juan Muñoz Cristóbal, Ivan Jorrín Abellán, Juan Asensio Perez, Alejandra Martínez Monés, Luis Prieto, Yannis Dimitriadis

Ivan M. Jorrín Abellán

During the last decades, educational contexts have transformed into complex technological and social ecologies, with mobile devices expanding the scope of education beyond the traditional classroom, creating so-called Ubiquitous Learning Environments (ULEs). However, these new technological opportunities entail an additional burden for teachers, who need to manage and coordinate the resources involved in such complex educational scenarios in a process known as “orchestration”. This paper presents the evaluation of the orchestration support provided by GLUEPS-AR, a system aimed to help teachers in the coordination of across-spaces learning situations carried out in ULEs. The evaluation, following an interpretive research perspective, relied …

Coming Down To Earth: Helping Teachers Use 3d Virtual Worlds In Across-Spaces Learning Situations, Juan Muñoz Cristóbal, Luis Prieto, Juan Asensio Pérez, Alejandra Martínez Monés, Ivan Jorrín Abellán, Yannis Dimitriadis

Ivan M. Jorrín Abellán

Different approaches have explored how to provide seamless learning across multiple ICT-enabled physical and virtual spaces, including three-dimensional virtual worlds (3DVW). However, these approaches present limitations that may reduce their acceptance in authentic educational practice: The difficulties of authoring and sharing teacher-created designs across different 3DVW platforms, or the lack of integration of 3DVWs with existing technologies in the classroom ecosystem (e.g., widespread web-based learning platforms such as Moodle, or mobile augmented reality applications). Focusing on a specific kind of 3DVW (virtual globes, such as Google Earth, used like 3DVWs), we propose a system that enables teachers to deploy across-spaces …

Wikis For Group Work: Encouraging Transparency, Benchmarking And Feedback, Amir Abdekhodaee, Dini Kourosh, Farnaz Modarres, Anne-Marie Chase, Bella Ross

Dr Anne-Marie Chase

Understanding The Methods Behind Cyber Terrorism, Maurice E. Dawson Jr., Marwan Omar, Jonathan Abramson

Maurice Dawson

Cyber security has become a matter of national, international, economic, and societal importance that affects multiple nations (Walker, 2012). Since the 1990s users have exploited vulnerabilities to gain access to networks for malicious purposes. In recent years the number of attacks on U.S. networks has continued to grow at an exponential rate. This includes malicious embedded code, exploitation of backdoors, and more. These attacks can be initiated from anywhere in the world from behind a computer with a masked Internet Protocol (IP) address. This type of warfare, cyber warfare, changes the landscape of war itself (Beidleman, 2009). This type of …