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Displaying 1-33 out of 33 total
Keynote: From labs to cities: Mapping the social impact of ubiquitous technologies
Found in: Pervasive Computing and Communications Workshops, IEEE International Conference on
By Vassilis Kostakos
Issue Date:March 2012
pp. 901
Pervasive and ubiquitous computing has come a long way in recent years, and our technologies and experimental prototypes are slowly moving out of the lab and into people's everyday lives. In this talk I will provide an overview of such research conducted b...
   
Traffic in the Smart City: Exploring City-Wide Sensing for Traffic Control Center Augmentation
Found in: IEEE Internet Computing
By Vassilis Kostakos,Timo Ojala,Tomi Juntunen
Issue Date:November 2013
pp. 22-29
Smart city technologies can provide substantial benefits that improve people's daily lives. Here, the authors investigate how ubiquitous traffic sensing technologies and techniques can be incorporated with conventional traffic control and monitoring practi...
 
ICTD Work, Plus mFeel
Found in: IEEE Pervasive Computing
By Joerg Doerflinger,Tom Gross,Olga Lyra,Evangelos Karapanos,Vassilis Kostakos,Ismael Cuadrado-Cordero,Luis Miguel Soria-Morillo,Luis González-Abril,Juan Antonio Ortega-Ramírez,Iván Pau de la Cruz,Miguel Ángel Valero Duboy,Eiman Ka
Issue Date:July 2012
pp. 43-45
This issue's Works-In-Progress department has four entries related to the issue's theme, Information and Communication Technologies for Development (ICTD). They are “Sustainable ICT in Agricultural Value Chains”, “Measuring Social Inclusion in Primary Scho...
 
Multipurpose Interactive Public Displays in the Wild: Three Years Later
Found in: Computer
By Timo Ojala,Vassilis Kostakos,Hannu Kukka,Tommi Heikkinen,Tomas Lindén,Marko Jurmu,Simo Hosio,Fabio Kruger,Daniele Zanni
Issue Date:May 2012
pp. 42-49
Extended research on interactive public displays deployed in a city center reveals differences between the public's stated information needs and their actual information behavior and highlights effects that an artificial environment cannot duplicate.
 
Making Friends in Life and Online: Equivalence, Micro-Correlation and Value in Spatial and Transpatial Social Networks
Found in: Social Computing / IEEE International Conference on Privacy, Security, Risk and Trust, 2010 IEEE International Conference on
By Vassilis Kostakos, Jayant Venkatanathan
Issue Date:August 2010
pp. 587-594
Social networks are increasingly constructed and maintained by online social networking tools in addition to traditional face-to-face interactions. This paper reports on how the structure of social ties established by online tools relate to those ties esta...
 
Is the Crowd's Wisdom Biased? A Quantitative Analysis of Three Online Communities
Found in: Computational Science and Engineering, IEEE International Conference on
By Vassilis Kostakos
Issue Date:August 2009
pp. 251-255
Abstract—We present a study of user voting on three websites: Imdb, Amazon and BookCrossings. Here we report on an expert evaluation of the voting mechanisms of each website and a quantitative data analysis of users’ aggregate voting behavior. Our results ...
 
Improving Emergency Response to Mass Casualty Incidents
Found in: Pervasive Computing and Communications, IEEE International Conference on
By Marcus Lucas da Silva, Vassilis Kostakos, Mitsuji Matsumoto
Issue Date:March 2008
pp. 256-259
Mass casualty incidents generate a sequence of response events from the emergency services, requiring the allocation and use of resources in a timely fashion. In this paper we describe a pervasive system that helps emergency services optimize their efficie...
 
NFC on Mobile Phones: Issues, Lessons and Future Research
Found in: Pervasive Computing and Communications Workshops, IEEE International Conference on
By Vassilis Kostakos, Eamonn O'Neill
Issue Date:March 2007
pp. 367-370
In this paper we discuss some issues arising from our implementation and evaluation of two systems that enable mobile phone users to identify common address book contacts. These systems were implemented using Bluetooth and NFC. Here we discuss development ...
 
Designing Urban Pervasive Systems
Found in: Computer
By Vassilis Kostakos, Eamonn O'Neill, Alan Penn
Issue Date:September 2006
pp. 52-59
A conceptual framework for designing and analyzing pervasive systems describes three aspects of these systems in the urban environment?architectural space, interaction space, and information sphere?and a spectrum of information
 
Pervasive Computing in Emergency Situations
Found in: Hawaii International Conference on System Sciences
By Vassilis Kostakos, Eamonn O'Neill
Issue Date:January 2004
pp. 30081b
Pervasive computing is still in its infancy and is mainly used in tightly constrained situations and environments. Examples such as
   
IncluCity: using contextual cues to raise awareness on environmental accessibility
Found in: Proceedings of the 15th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '13)
By Evangelos Karapanos, Jorge Goncalves, Olga Lyra, Simo Hosio, Vassilis Kostakos
Issue Date:October 2013
pp. 1-8
Awareness campaigns aiming to highlight the accessibility challenges affecting people with disabilities face an important challenge. They often describe the environmental features that pose accessibility barriers out of context, and as a result public cann...
     
SOFTec 2013: second workshop on computer mediated social offline interactions
Found in: Proceedings of the 2013 ACM conference on Pervasive and ubiquitous computing adjunct publication (UbiComp '13 Adjunct)
By Albrecht Schmidt, Geraldine Fitzpatrick, Nemanja Memarovic, Vassilis Kostakos
Issue Date:September 2013
pp. 1373-1380
In the age of online social networks, instant messaging, and email, social offline interactions seem destined to become an anachronism: as our use of electronic media increases, the number of hours per day that we interact directly with others "in the fles...
     
Ubiquitous mobile instrumentation
Found in: Proceedings of the 2013 ACM conference on Pervasive and ubiquitous computing adjunct publication (UbiComp '13 Adjunct)
By Christian Koehler, Denzil Ferreira, Evangelos Karapanos, Vassilis Kostakos
Issue Date:September 2013
pp. 1409-1412
Mobile phones allow us to reach people anywhere, at anytime. In addition to the benefits for end users, researchers and developers can also benefit from the powerful devices that participants carry on a daily basis. Collectively, mobile phones form a ubiqu...
     
Human interfaces for civic and urban engagement: HiCUE '13
Found in: Proceedings of the 2013 ACM conference on Pervasive and ubiquitous computing adjunct publication (UbiComp '13 Adjunct)
By Jorge Goncalves, Keith Cheverst, Simo Hosio, Vassilis Kostakos, Yvonne Rogers
Issue Date:September 2013
pp. 713-720
How should citizens and communities interact with and in their city? Leveraging urban resources for civic purposes, such as citizen participation and community engagement, has been gaining interest in HCI. Essentially, citizens can be empowered to be heard...
     
Crowdsourcing on the spot: altruistic use of public displays, feasibility, performance, and behaviours
Found in: Proceedings of the 2013 ACM international joint conference on Pervasive and ubiquitous computing (UbiComp '13)
By Denzil Ferreira, Hannu Kukka, Jakob Rogstadius, Jorge Goncalves, Simo Hosio, Vassilis Kostakos, Yong Liu
Issue Date:September 2013
pp. 753-762
This study is the first attempt to investigate altruistic use of interactive public displays in natural usage settings as a crowdsourcing mechanism. We test a non-paid crowdsourcing service on public displays with eight different motivation settings and an...
     
Revisiting human-battery interaction with an interactive battery interface
Found in: Proceedings of the 2013 ACM international joint conference on Pervasive and ubiquitous computing (UbiComp '13)
By Anind K. Dey, Denzil Ferreira, Eija Ferreira, Jorge Goncalves, Vassilis Kostakos
Issue Date:September 2013
pp. 563-572
Mobile phone user interfaces typically show an icon to indicate remaining battery, but not the amount of time the device can be used for, often forcing users to make faulty estimates and predictions about battery life. Here we report on two studies that ca...
     
What makes you click: exploring visual signals to entice interaction on public displays
Found in: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '13)
By Hannu Kukka, Heidi Oja, Jorge Gonçalves, Timo Ojala, Vassilis Kostakos
Issue Date:April 2013
pp. 1699-1708
Most studies take for granted the critical first steps that prelude interaction with a public display: awareness of the interactive affordances of the display, and enticement to interact. In this paper we investigate mechanisms for enticing interaction on ...
     
Web tool for traffic engineers: direct manipulation and visualization of vehicular traffic using Google maps
Found in: Proceeding of the 16th International Academic MindTrek Conference (MindTrek '12)
By Denzil Ferreira, Mikko Perttunen, Tomi Juntunen, Vassilis Kostakos
Issue Date:October 2012
pp. 209-210
We present a lightweight web-based tool aimed for traffic engineers that allows an engineer-friendly way to interact and explore traffic volume statistics. This system has been created in participatory design with experienced traffic engineers from a local...
     
Workshop on Computer Mediated Social Offline Interactions (SOFTec 2012)
Found in: Proceedings of the 2012 ACM Conference on Ubiquitous Computing (UbiComp '12)
By Elaine M. Huang, Geraldine Fitzpatrick, Marc Langheinrich, Nemanja Memarovic, Vassilis Kostakos
Issue Date:September 2012
pp. 790-791
The proliferation of social networking sites and mobile technology allows us to check on our friends and family, follow what experts in our field think, or simply 'check-in' online. While in many ways advantageous, the ability to be constantly connected is...
     
UbiMI: ubiquitous mobile instrumentation
Found in: Proceedings of the 2012 ACM Conference on Ubiquitous Computing (UbiComp '12)
By Denzil Ferreira, Emiliano Miluzzo, Jonna Hakkila, Tom Lovett, Vassilis Kostakos
Issue Date:September 2012
pp. 715-716
Thanks to the rapid development of mobile technologies, smartphones allow people to be reachable anywhere and anytime. In addition to the benefits for end users, researchers and developers can also benefit from the powerful devices that participants potent...
     
Towards multi-application public interactive displays
Found in: Proceedings of the 2012 International Symposium on Pervasive Displays (PerDis '12)
By Denzil Ferreira, Timo Ojala, Tomas Lindén, Tommi Heikkinen, Vassilis Kostakos
Issue Date:June 2012
pp. 1-5
Public displays are becoming a common sight in the urban landscape and they are increasingly being equipped with interaction components such as touch screens. In addition, the Web and its set of enabling technologies are attractive for realizing applicatio...
     
Training users vs. training soldiers: experiences from the battlefield
Found in: Communications of the ACM
By Vassilis Kostakos
Issue Date:March 2012
pp. 33-35
How military training methods can be applied to more effectively teach computer users.
     
UBI challenge: research coopetition on real-world urban computing
Found in: Proceedings of the 10th International Conference on Mobile and Ubiquitous Multimedia (MUM '11)
By Timo Ojala, Vassilis Kostakos
Issue Date:December 2011
pp. 205-208
This paper introduces the UBI Challenge that challenged the global R&D community to design, implement, deploy and evaluate novel applications and services in real world setting atop an open urban computing testbed. The paper first provides a procedural...
     
Who's your best friend?: targeted privacy attacks In location-sharing social networks
Found in: Proceedings of the 13th international conference on Ubiquitous computing (UbiComp '11)
By Bernardo Reynolds, Eran Toch, Jayant Venkatanathan, Norman Sadeh, Simon Jones, Siraj A. Shaikh, Vassilis Kostakos
Issue Date:September 2011
pp. 177-186
This paper presents a study that aims to answer two important questions related to targeted location-sharing privacy attacks: (1) given a group of users and their social graph, is it possible to predict which among them is likely to reveal most about their...
     
Running gestures: hands-free interaction during physical activity
Found in: Proceedings of the 12th ACM international conference adjunct papers on Ubiquitous computing - Adjunct (Ubicomp '10 Adjunct)
By Boris Smus, Vassilis Kostakos
Issue Date:September 2010
pp. 433-434
This paper presents Running Gestures, an interaction technique that relies on foot gestures while running. A prototype and evaluation of one of the proposed gestures, a mid-stride skip, is presented in detail. The developed prototype is used by runners to ...
     
Hide and seek: location sharing practices with social media
Found in: Proceedings of the 12th international conference on Human computer interaction with mobile devices and services (MobileHCI '10)
By Andre Doria, Daniel Wagner, Ian Oakley, Iryna Pavlyshak, Mariana Lopez, Tasos Spiliotopoulos, Vassilis Kostakos
Issue Date:September 2010
pp. 55-58
This paper presents a multi-pronged study of users' location-sharing practices in the context of online social networks. The contribution of this study is two-fold: first it presents a series of insights relating to location-sharing practices, and second i...
     
Brief encounters: Sensing, modeling and visualizing urban mobility and copresence networks
Found in: ACM Transactions on Computer-Human Interaction (TOCHI)
By Alan Penn, Dikaios Papadongonas, Eamonn O'Neill, George Roussos, Vassilis Kostakos
Issue Date:March 2010
pp. 1-38
Moving human-computer interaction off the desktop and into our cities requires new approaches to understanding people and technologies in the built environment. We approach the city as a system, with human, physical and digital components and behaviours. I...
     
Designing trustworthy situated services: an implicit and explicit assessment of locative images-effect on trust
Found in: Proceedings of the 27th international conference on Human factors in computing systems (CHI '09)
By Ian Oakley, Vassilis Kostakos
Issue Date:April 2009
pp. 1-4
This paper examines a visual design element unique to situated, hot-spot style, services: locativeness. This is the extent to which the media representing a service relates to its immediate physical environment. This paper explores the effect of locativene...
     
Urban encounters: the game of real life
Found in: CHI '08 extended abstracts on Human factors in computing systems (CHI '08)
By Vassilis Kostakos
Issue Date:April 2008
pp. 49-54
In this paper we describe our ongoing work on modelling urban encounters by extending Conway's Game of Life. We develop our model based on empirical data collected using a Tamagotchi-like mobile game that recorded people's encounters by sensing nearby devi...
     
Social networking 2.0
Found in: CHI '08 extended abstracts on Human factors in computing systems (CHI '08)
By Vassilis Kostakos
Issue Date:April 2008
pp. 49-54
In this paper we describe the development of a platform that enables us to systematically study online social networks alongside their real-world counterparts. Our system, entitled Cityware, merges users' online social data, made available through Facebook...
     
Human-in-the-loop: rethinking security in mobile and pervasive systems
Found in: CHI '08 extended abstracts on Human factors in computing systems (CHI '08)
By Vassilis Kostakos
Issue Date:April 2008
pp. 49-54
In this paper we argue that pervasive systems introduce human-driven security vulnerabilities that traditional usability design cannot address. We claim that there is a need to understand better the appropriate role of humans in the context of pervasive sy...
     
UbiSoc 2005: first international workshop on social implications of ubiquitous computing
Found in: CHI '05 extended abstracts on Human factors in computing systems (CHI '05)
By Carsten Magerkurth, Irene Lopez de Vallejo, Vassilis Kostakos, Vlad Coroama
Issue Date:April 2005
pp. 2111-2112
This two-day workshop will advance discussion on the role of public interfaces in engaging citizens within the urban context. The aim is to determine how technology can help to develop cities that address the needs and reflect the desires of its inhabitant...
     
Easing the wait in the emergency room: building a theory of public information systems
Found in: Proceedings of the 2004 conference on Designing interactive systems: processes, practices, methods, and techniques (DIS '04)
By Dawn Woodgate, Eamonn O'Neill, Vassilis Kostakos
Issue Date:August 2004
pp. 17-25
In this paper we discuss a real world problem encountered during recent fieldwork: that of providing information in public settings when the information has both public and private components. We draw on our ethnographic studies in the waiting area of a bu...
     
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