Public Ubiquitous Computing Systems: Lessons from the e-Campus Display Deployments

Abstract. Large public displays have become a regular conceptual element in many shops and businesses, where they advertise products or highlight upcoming events. In our work, we are interested in exploring how these isolated display solutions can be interconnected to form a single large network of public displays, thus supporting novel forms of sharing access to display real estate. In order to explore the feasibility of this vision, we investigated today's practices surrounding shared notice areas, i.e. places where customers and visitors can put up event posters and classifieds, such as shop windows or notice boards. In particular, we looked at the content posted to such areas, the means for sharing it (i.e., forms of content control), and the reason for providing the shared notice area. Based on two-week long photo logs and a number of in-depth interviews with providers of such notice areas, we provide a systematic assessment of factors that inhibit or promote the shared use of public display space, ultimately leading to a set of concrete design implication for providing future digital versions of such public notice areas in the form of networked public displays.

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“…[1], [3]) but also in public space (e.g. [12], [15]). Also, novel interaction methods have been studied, both in terms of user behaviors (e.g.…”

Section: Related Workmentioning

confidence: 99%

Designing Shared Public Display Networks – Implications from Today’s Paper-Based Notice Areas

Alt

Memarović

Elhart

et al. 2011

Lecture Notes in Computer Science

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“…The concept has been extensively used to increase the convenience of human life. The sensor node is becoming one key device to consist of the intelligent ubiquitous computing network (USN) such as medical monitoring, surveillance and tracking systems [1,2]. Most of the USN is to collect and relay information to coordinator for integrating as useful knowledge [3,4].…”

Section: Introductionmentioning

confidence: 99%

A Life Extend Approach Based on Priority Queue N Strategy for Wireless Sensor Network

Ke¹,

Chen²,

Huang³

2015

Proceedings of the 11th EAI International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustn

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In this paper, we proposed a method on the tradeoff between packet transmission speed and battery life in wireless sensor networks (WSN). The data obtained by sensor nodes comprised various types of information with various levels of importance. A misjudgment of the priority of packets according to the importance of data may delay the transmission of important information. The energy consumed by sensor nodes varies according to system states. Therefore, this research used queuing theory and the birth-death process to build a mathematical model capable of quantifying various energy consumption parameters. MATLAB was used to calculate the distribution of system state probability for sensor nodes with two queues. Packet delay equation was then applied to obtain the expected values of delay time for packets of various priorities. We adjust various system parameters and observe how these changes influenced system state probability. Finally, we use different N values to obtain the minimal value of system energy consumption. Obtaining this value helps to overcome the energy hole problem (EHP), which in turn extends the lifespan of the overall WSN. Prioritizing packets can ensure the transmission of important data within a shorter time span. Experimental results show the energy consumption is reduced and important data can be transmitted with less packet delay time.

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“…Related work in this area have focused mainly on device pairing solutions and subsequent organization of application presentation and input mappings [6,7,8,9]. Main difference to our work is that we solely focus on the modeling and management of display ownership and status information within an interconnected network of public displays.…”

Section: Introduction and Related Workmentioning

confidence: 99%

Leasing Service for Networks of Interactive Public Displays in Urban Spaces

Jurmu

Kukka

Hosio

et al. 2011

Advances in Grid and Pervasive Computing

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Abstract. This paper reports performance metrics and end-user perceptions of a display leasing service, introduced for a network of public displays. Through leasing, users can acquire a temporary ownership of a public display and utilize it as an application UI element together with a personal mobile device. We argue that this functionality is necessary as the quantity of public displays grows, in order to facilitate public resource utilization and alleviate patterns such as queuing and polling. We implemented a prototype of the leasing service and conducted a field trial with a real-world city centre scenario, through which we analyze the service's signaling overhead and key deployment challenges.

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Public Ubiquitous Computing Systems: Lessons from the e-Campus Display Deployments

Cited by 91 publications

References 1 publication

Designing Shared Public Display Networks – Implications from Today’s Paper-Based Notice Areas

Designing Shared Public Display Networks – Implications from Today’s Paper-Based Notice Areas

A Life Extend Approach Based on Priority Queue N Strategy for Wireless Sensor Network

Leasing Service for Networks of Interactive Public Displays in Urban Spaces

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