Publications

2019

  • A. Visuri, N. van Berkel, T. Okoshi, J. Goncalves, V. Kostakos (2019) Understanding Smartphone Notifications’ User Interactions and Content Importance. International Journal of Human-Computer Studies (IJHCS).
  • Kennedy Opoku Asare, Aku Visuri, Denzil ST Ferreira. 2019. Towards Early Detection of Depression through Smartphone Sensing. In Proceedings of the 2019 ACM International Joint Conference and 2019 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers (UbiComp '19) . ACM. (To Appear)
  • Elina Kuosmanen, Valerii Kan, Aku Visuri, Assam Boudjelthia, Lokmane Krizou, and Denzil Ferreira. 2019. Measuring Parkinson's Disease Motor Symptoms with Smartphone-based Drawing Tasks. In Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the 2019 International Symposium on Wearable Computers (UbiComp '19). ACM. (Accepted)
  • Elina Kuosmanen, Valerii Kan, Julio Vega, Aku Visuri, Yuuki Nishiyama, Anind K. Dey, Simon Harper, and Denzil Ferreira. 2019. Challenges of Parkinson’s Disease: User Experiences with STOP. In Proceedings of the 21th International Conference on Human-Computer Interaction with Mobile Devices and Services (MobileHCI '19). ACM. (Accepted)
  • Niels van Berkel, Jorge Goncalves, Peter Koval, Simo Hosio, Tilman Dingler, Denzil Ferreira, and Vassilis Kostakos. 2019. Context-Informed Scheduling and Analysis: Improving Accuracy of Mobile Self-Reports. In Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems (CHI ’19), 51:1–51:12. DOI:https://doi.org/10.1145/3290605.3300281
  • Niels van Berkel, Jorge Goncalves, Lauri Lovén, Denzil Ferreira, Simo Hosio, and Vassilis Kostakos. 2019. Effect of experience sampling schedules on response rate and recall accuracy of objective self-reports. International Journal of Human-Computer Studies 125, (2019), 118–128. DOI:https://doi.org/10.1016/j.ijhcs.2018.12.002
  • Carissa A Low, Helbert J Zeh, Melissa Hogg, Vernissia Tam, Anind K. Dey, Denzil Ferreira, Nikola Banovic, and Afsaneh Doryab. 2019. Relationships between Smartphone and Wearable Sensor Data, Symptoms, Quality of Life, and Inflammation after Pancreatic Surgery. In (4), A195–A195.
  • Chu Luo, Aku Visuri, Simon Klakegg, Niels van Berkel, Zhanna Sarsenbayeva, Antti Möttönen, Jorge Goncalves, Theodoros Anagnostopoulos, Denzil Ferreira, Huber Flores, Eduardo Velloso, and Vassilis Kostakos. 2019. Energy-efficient prediction of smartphone unlocking. Pers Ubiquit Comput 23, 1 (2019), 159–177. DOI:https://doi.org/10.1007/s00779-018-01190-0
  • Upal Mahbub, Jukka Komulainen, Denzil Ferreira, and Rama Chellappa. 2019. Continuous Authentication of Smartphones Based on Application Usage. IEEE Transactions on Biometrics, Behavior, and Identity Science (2019). Retrieved February 24, 2019 from http://arxiv.org/abs/1808.03319
  • Jiangtao Wang, Yasha Wang, Daqing Zhang, Jorge Goncalves, Denzil Ferreira, Aku Visuri, and Sen Ma. 2019. Learning-Assisted Optimization in Mobile Crowd Sensing: A Survey. IEEE Transactions on Industrial Informatics 15, 1 (2019), 15–22.

2018

  • A. Visuri, R. Poguntke, E. Kuosmanen (2018) Proposing Design Recommendations for an Intelligent Recommender System Logging Stress, In Proceedings of the International Conference on Mobile and Ubiquitous Multimedia (MUM 2018).
  • Elina Kuosmanen, Valerii Kan, Aku Visuri, Julio Vega, Yuuki Nishiyama, Anind K. Dey, Simon Harper, and Denzil Ferreira. 2018. Mobile-based Monitoring of Parkinson’s Disease. In Proceedings of the 17th International Conference on Mobile and Ubiquitous Multimedia (MUM 2018). ACM, 441–448.
  • A. Visuri, Z. Sarsenbayeva, et al. (2018) Ubiquitous Mobile Sensing: Behaviour, Mood, and Environment, In Adjunct Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT).
  • Valerii Kan, Dorina Rajanen, Kennedy Opoku Asare, and Denzil Ferreira. 2018. STOP: A Smartphone-based Game for Parkinson’s Disease Medication Adherence. In Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers (UbiComp '18). ACM, 373–376.
  • Valerii Kan. 2018. STOP: A Smartphone-Based Game for Parkinson’s Disease Medication Adherence. MSc thesis, University of Oulu, Oulu.
  • Kennedy Opoku Asare, Tore Leikanger, Christian Schuss, Simon Klakegg, Aku Visuri and Denzil Ferreira. 2018. S3: environmental fingerprinting with a credit card-sized NFC powered sensor board. In Proceedings of the 20th International Conference on Human-Computer Interaction with Mobile Devices and Services Adjunct (MobileHCI '18), ACM, 298-305
  • Kennedy Opoku Asare. 2018. Enabling Environmental Fingerprinting with an NFC-powered Sensor Board. MSc thesis, University of Oulu, Finland
  • Jonas Oppenlaender, Simo Hosio, Kennedy Opoku Asare. 2018 . CampusTracker – Assessing the Momentary Willingness to Work on a Paid Mobile Crowdsourcing Task. In Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers (Ubicomp '18). ACM , 648-653
  • Paula Alavesa, Minna Pakanen, Timo Ojala, Kennedy Opoku Asare, Karri Ojala, Mikko Lehto, and Hannu Kukka. 2018. Ludic Markers for Player-Player Observation in Location-Based Mobile Games. Simulation & Gaming .49(6), 700-717
  • Sangwon Bae, Tammy Chung, Denzil Ferreira, Anind K. Dey, and Brian Suffoletto. 2018. Mobile phone sensors and supervised machine learning to identify alcohol use events in young adults: Implications for just-in-time adaptive interventions. Addictive Behaviors 83, (2018), 42–47. DOI:https://doi.org/10.1016/j.addbeh.2017.11.039
  • Yazan Barhoush, Miikka Mustonen, Denzil Ferreira, Georgi V Georgiev, Daniel Nguyen, and Matti Pouke. 2018. The Gravity of Thought: Exploring Positively Surprising Interactions. In Proceedings of the 20th International Conference on Human-Computer Interaction with Mobile Devices and Services Adjunct (MobileHCI ’18), 333–338. DOI:https://doi.org/10.1145/3236112.3236160
  • Assam Boudjelthia, Sofeem Nasim, Janne Eskola, Joshua Muyiwa Adeegbe, Oula Hourula, Simon Klakegg, and Denzil Ferreira. 2018. Enabling Mid-air Browser Interaction with Leap Motion. In Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers (UbiComp ’18), 335–338. DOI:https://doi.org/10.1145/3267305.3267580
  • Hanna-Leena Huttunen, Raija Halonen, and Denzil Ferreira. 2018. Identifying bottlenecks in work processes: Elderly care. In 2018 IEEE 6th International Conference on Serious Games and Applications for Health (SeGAH), 1–8.
  • Simon Klakegg, Jorge Goncalves, Chu Luo, Aku Visuri, Alexey Popov, Niels van Berkel, Zhanna Sarsenbayeva, Vassilis Kostakos, Simo Hosio, Scott Savage, Alexander Bykov, Igor Meglinski, and Denzil Ferreira. 2018. Assisted Medication Management in Elderly Care Using Miniaturised Near-Infrared Spectroscopy. Proc. ACM Interact. Mob. Wearable Ubiquitous Technol. 2, 2 (2018), 69:1–69:24. DOI:https://doi.org/10.1145/3214272
  • Carissa A. Low, Anind K. Dey, Denzil Ferreira, Thomas Kamarck, Weijing Sun, Sangwon Bae, and Afsaneh Doryab. 2018. Using Passive Smartphone and Wearable Sensors to Estimation Patient-Reported Stress and Symptoms During Chemotherapy. In PSYCHOSOMATIC MEDICINE, A138–A138.
  • Upal Mahbub, Jukka Komulainen, Denzil Ferreira, and Rama Chellappa. 2019. Continuous Authentication of Smartphones Based on Application Usage. IEEE Transactions on Biometrics, Behavior, and Identity Science (2019). Retrieved February 24, 2019 from http://arxiv.org/abs/1808.03319
  • Yuuki Nishiyama, Anind K. Dey, Denzil Ferreira, Takuro Yonezawa, and Jin Nakazawa. 2018. Senbay: A Platform for Instantly Capturing, Integrating, and Restreaming of Synchronized Multiple Sensor-data Stream. In Proceedings of the 20th International Conference on Human-Computer Interaction with Mobile Devices and Services Adjunct (MobileHCI ’18), 291–291. DOI:https://doi.org/10.1145/3236112.3236154
  • Aku Visuri, Kennedy Opoku Asare, Elina Kuosmanen, Yuuki Nishiyama, Denzil Ferreira, Zhanna Sarsenbayeva, Jorge Goncalves, Niels van Berkel, Greg Wadley, Vassilis Kostakos, Sarah Clinch, Oludamilare Matthews, Simon Harper, Amy Jenkins, Stephen Snow, and m. c. schraefel. 2018. Ubiquitous Mobile Sensing: Behaviour, Mood, and Environment. In Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers (UbiComp ’18), 1140–1143. DOI:https://doi.org/10.1145/3267305.3274142

2017

  • Simon Klakegg, Niel van Berkel, Aku Visuri, Hanna-Leena Huttunen, Simo Hosio, Chu Luo, Jorge Goncalves, Denzil Ferreira (2017). Designing a Context-Aware Assistive Infrastructure for Elderly Care. In Adjunct Proceedings of the 2017 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp '17). ACM. 563-568
  • Simon Klakegg, Niels van Berkel, Aku Visuri, Chu Luo, Jorge Goncalves, Simo Hosio, Hanna-Leena Huttunen, Denzil Ferreira (2017). Informing Caregivers Through an Assistive Tool: An Investigation of Elderly Care Metrics. In Proceedings of the 31st British Human-Computer Interaction Conference (British HCI’17).
  • Theodoros Anagnostopoulos, Juan Camilo Garcia, Jorge Goncalves, Denzil Ferreira, Simo Hosio, and Vassilis Kostakos. 2017. Environmental exposure assessment using indoor/outdoor detection on smartphones. Pers Ubiquit Comput 21, 4 (2017), 761–773. DOI:https://doi.org/10.1007/s00779-017-1028-y
  • Sangwon Bae, Denzil Ferreira, Brian Suffoletto, Juan C. Puyana, Ryan Kurtz, Tammy Chung, and Anind K. Dey. 2017. Detecting Drinking Episodes in Young Adults Using Smartphone-based Sensors. Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies 1, 2 (2017), 5.
  • Anabela Berenguer, Jorge Goncalves, Simo Hosio, Denzil Ferreira, Theodoros Anagnostopoulos, and Vassilis Kostakos. 2017. Are Smartphones Ubiquitous?: An in-depth survey of smartphone adoption by seniors. IEEE Consumer Electronics Magazine 6, 1 (2017), 104–110. DOI:https://doi.org/10.1109/MCE.2016.2614524
  • Niels van Berkel, Denzil Ferreira, and Vassilis Kostakos. 2017. The Experience Sampling Method on Mobile Devices. ACM Comput. Surv. 50, 6 (2017), 93:1–93:40. DOI:https://doi.org/10.1145/3123988
  • Denzil Ferreira, Vassilis Kostakos, and Immanuel Schweizer. 2017. Human Sensors on the Move. In Participatory Sensing, Opinions and Collective Awareness, Vittorio Loreto, Muki Haklay, Andreas Hotho, Vito D.P. Servedio, Gerd Stumme, Jan Theunis and Francesca Tria (eds.). Springer International Publishing, Cham, 9–19. DOI:https://doi.org/10.1007/978-3-319-25658-0_1
  • Eija Ferreira and Denzil Ferreira. 2017. Towards Altruistic Data Quality Assessment for Mobile Sensing. In Proceedings of the 2017 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2017 ACM International Symposium on Wearable Computers (UbiComp ’17), 464–469. DOI:https://doi.org/10.1145/3123024.3124439
  • Huber Flores, Rajesh Sharma, Denzil Ferreira, Vassilis Kostakos, Jukka Manner, Sasu Tarkoma, Pan Hui, and Yong Li. 2017. Social-aware hybrid mobile offloading. Pervasive and Mobile Computing 36, (2017), 25–43. DOI:https://doi.org/10.1016/j.pmcj.2016.09.014
  • Georgi V. Georgiev, Iván Sánchez Milara, and Denzil Ferreira. 2017. A framework for capturing creativity in digital fabrication. The Design Journal 20, sup1 (2017), S3659–S3668.
  • Hanna-Leena Huttunen, Simon Klakegg, Nils van Berkel, Aku Visuri, Denzil Ferreira, and Raija Halonen. 2017. Understanding Elderly Care: A Field-study for Designing Future Homes. In Proceedings of the 19th International Conference on Information Integration and Web-based Applications & Services (iiWAS ’17), 390–394. DOI:https://doi.org/10.1145/3151759.3151835
  • Andreas Komninos, Jeries Besharat, Denzil Ferreira, John Garofalakis, and Vassilis Kostakos. 2017. Where’s everybody? Comparing the use of heatmaps to uncover cities’ tacit social context in smartphones and pervasive displays. Inf Technol Tourism 17, 4 (2017), 399–427. DOI:https://doi.org/10.1007/s40558-017-0092-5
  • Vassilis Kostakos, Jakob Rogstadius, Denzil Ferreira, Simo Hosio, and Jorge Goncalves. 2017. Human Sensors. In Participatory Sensing, Opinions and Collective Awareness, Vittorio Loreto, Muki Haklay, Andreas Hotho, Vito D.P. Servedio, Gerd Stumme, Jan Theunis and Francesca Tria (eds.). Springer International Publishing, Cham, 69–92. DOI:https://doi.org/10.1007/978-3-319-25658-0_4
  • Z. Sarsenbayeva, N. van Berkel, A. Visuri, S. Rissanen, H. Rintamäki, V. Kostakos, J. Goncalves (2017) Sensing Cold-Induced Situational Impairments in Mobile Interaction Using Battery Temperature. In Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT)
  • Carissa A. Low, Sangwon Bae, Denzil Ferreira, Thomas Kamarck, Weijing Sun, and Anind K. Dey. 2017. DAILY STRESS DURING CHEMOTHERAPY: ASSOCIATIONS WITH CHANGES IN QUALITY OF LIFE, DEPRESSION, AND INFLAMMATION. In PSYCHOSOMATIC MEDICINE, A50–A51.
  • Carissa A Low, Anind K Dey, Denzil Ferreira, Thomas Kamarck, Weijing Sun, Sangwon Bae, and Afsaneh Doryab. 2017. Estimation of Symptom Severity During Chemotherapy From Passively Sensed Data: Exploratory Study. J Med Internet Res 19, 12 (2017). DOI:https://doi.org/10.2196/jmir.9046
  • Chu Luo, Miikka Kuutila, Simon Klakegg, Denzil Ferreira, Huber Flores, Jorge Goncalves, Mika Mäntylä, and Vassilis Kostakos. 2017. TestAWARE: A Laboratory-Oriented Testing Tool for Mobile Context-Aware Applications. Proc. ACM Interact. Mob. Wearable Ubiquitous Technol. 1, 3 (2017), 80:1–80:29. DOI:https://doi.org/10.1145/3130945
  • Zhanna Sarsenbayeva, Denzil Ferreira, Niels van Berkel, Chu Luo, Mikko Vaisanen, Vassilis Kostakos, and Jorge Goncalves. 2017. Vision-based Happiness Inference: A Feasibility Case-study. In Proceedings of the 2017 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2017 ACM International Symposium on Wearable Computers (UbiComp ’17), 494–499. DOI:https://doi.org/10.1145/3123024.3124438
  • Aku Visuri, Niels van Berkel, Chu Luo, Jorge Goncalves, Denzil Ferreira, and Vassilis Kostakos. 2017. Challenges of Quantified-self: Encouraging Self-reported Data Logging During Recurrent Smartphone Usage. In Proceedings of the 31st British Computer Society Human Computer Interaction Conference (HCI ’17), 81:1–81:7. DOI:https://doi.org/10.14236/ewic/HCI2017.81
  • Aku Visuri, Niels van Berkel, Chu Luo, Jorge Goncalves, Denzil Ferreira, and Vassilis Kostakos. 2017. Predicting Interruptibility for Manual Data Collection: A Cluster-based User Model. In Proceedings of the 19th International Conference on Human-Computer Interaction with Mobile Devices and Services (MobileHCI ’17), 12:1–12:14. DOI:https://doi.org/10.1145/3098279.3098532
  • Aku Visuri, Denzil Ferreira, Susanna Pirttikangas, Vassilis Kostakos, K\a are Synnes, Janne Lindqvist, and Yuuki Nishiyama. 2017. UbiMI’17: Ubiquitous Mobile Instrumentation. In Proceedings of the 2017 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2017 ACM International Symposium on Wearable Computers (UbiComp ’17), 448–451. DOI:https://doi.org/10.1145/3123024.3124454
  • Aku Visuri, Simo Hosio, and Denzil Ferreira. 2017. Exploring Mobile Ad Formats to Increase Brand Recollection and Enhance User Experience. In Proceedings of the 16th International Conference on Mobile and Ubiquitous Multimedia (MUM ’17), 311–319. DOI:https://doi.org/10.1145/3152832.3152834
  • Aku Visuri, Zhanna Sarsenbayeva, Niels van Berkel, Jorge Goncalves, Reza Rawassizadeh, Vassilis Kostakos, and Denzil Ferreira. 2017. Quantifying Sources and Types of Smartwatch Usage Sessions. In Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems (CHI ’17), 3569–3581. DOI:https://doi.org/10.1145/3025453.3025817
  • Aku Visuri, Zeyun Zhu, Denzil Ferreira, Shin’ichi Konomi, and Vassilis Kostakos. 2017. Smartphone Detection of Collapsed Buildings During Earthquakes. In Proceedings of the 2017 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2017 ACM International Symposium on Wearable Computers (UbiComp ’17), 557–562. DOI:https://doi.org/10.1145/3123024.3124402

2016

  • Paula Alavesa, Mikko Lehto, Karri Ojala and Kennedy Opoku Asare. 2016. Here n' there: location based mobile game exploring the possibilities of location spoofing in game mechanics. In Proceedings of the 15th International Conference on Mobile and Ubiquitous Multimedia (MobileHCI '16). ACM. 331-333
  • Theodoros Anagnostopoulos, Denzil Ferreira, Alexander Samodelkin, Muzamil Ahmed, and Vassilis Kostakos. 2016. Cyclist-aware traffic lights through distributed smartphone sensing. Pervasive and Mobile Computing 31, (2016), 22–36. DOI:https://doi.org/10.1016/j.pmcj.2016.01.012
  • Niels van Berkel, Chu Luo, Theodoros Anagnostopoulos, Denzil Ferreira, Jorge Goncalves, Simo Hosio, and Vassilis Kostakos. 2016. A Systematic Assessment of Smartphone Usage Gaps. In Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems (CHI ’16), 4711–4721. DOI:https://doi.org/10.1145/2858036.2858348
  • Denzil Ferreira, Huber Flores, Karel Vandenbroucke, and Aku Visuri. 2016. Online?: A Study of Smartphone Internet Availability. In Proceedings of the 15th International Conference on Mobile and Ubiquitous Multimedia (MUM ’16), 347–349. DOI:https://doi.org/10.1145/3012709.3016060
  • Denzil Ferreira, Tadashi Okoshi, Yuuki Nishiyama, Christian Koehler, Jung Wook Park, and Andrés Lucero. 2016. 3rd International Workshop on Ubiquitous Mobile Instrumentation. In Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct (UbiComp ’16), 608–611. DOI:https://doi.org/10.1145/2968219.2978276
  • Denzil Ferreira, Christian Schuss, Chu Luo, Jorge Goncalves, Vassilis Kostakos, and Timo Rahkonen. 2016. Indoor Light Scavenging on Smartphones. In Proceedings of the 15th International Conference on Mobile and Ubiquitous Multimedia (MUM ’16), 369–371. DOI:https://doi.org/10.1145/3012709.3017603
  • Huber Flores, Rajesh Sharma, Denzil Ferreira, Chu Luo, Vassilis Kostakos, Sasu Tarkoma, Pan Hui, and Yong Li. 2016. Social-aware Device-to-device Communication: A Contribution for Edge and Fog Computing? In Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct (UbiComp ’16), 1466–1471. DOI:https://doi.org/10.1145/2968219.2968589
  • Simo Hosio, Denzil Ferreira, Jorge Goncalves, Niels van Berkel, Chu Luo, Muzamil Ahmed, Huber Flores, and Vassilis Kostakos. 2016. Monetary Assessment of Battery Life on Smartphones. In Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems (CHI ’16), 1869–1880. DOI:https://doi.org/10.1145/2858036.2858285
  • Vassilis Kostakos, Denzil Ferreira, Jorge Goncalves, and Simo Hosio. 2016. Modelling Smartphone Usage: A Markov State Transition Model. In Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp ’16), 486–497. DOI:https://doi.org/10.1145/2971648.2971669
  • Yong Liu, Denzil Ferreira, Jorge Gonçalves, Simo Hosio, Pratyush Pandab, and Vassilis Kostakos. 2016. Donating Context Data to Science: The Effects of Social Signals and Perceptions on Action-Taking. In Interacting with Computers, 132–146. DOI:https://doi.org/10.1093/iwc/iww013
  • Chu Luo, Miikka Kuutila, Simon Klakegg, Denzil Ferreira, Huber Flores, Jorge Goncalves, Vassilis Kostakos, and Mika Mäntylä. 2016. How to Validate Mobile Crowdsourcing Design? Leveraging Data Integration in Prototype Testing. In Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct (UbiComp ’16), 1448–1453. DOI:https://doi.org/10.1145/2968219.2968586
  • Ahsan Manzoor and Denzil Ferreira. 2016. Contact Lingo Keyboard. In Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct (UbiComp ’16), 647–651. DOI:https://doi.org/10.1145/2968219.2971595
  • Matti Pouke, Jorge Goncalves, Denzil Ferreira, and Vassilis Kostakos. 2016. Practical simulation of virtual crowds using points of interest. Computers, Environment and Urban Systems 57, (2016), 118–129. DOI:https://doi.org/10.1016/j.compenvurbsys.2016.02.004

2015

  • Niels van Berkel, Chu Luo, Denzil Ferreira, Jorge Goncalves, and Vassilis Kostakos. 2015. The Curse of Quantified-self: An Endless Quest for Answers. In Adjunct Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2015 ACM International Symposium on Wearable Computers (UbiComp/ISWC’15 Adjunct), 973–978. DOI:https://doi.org/10.1145/2800835.2800946
  • Karen Church, Denzil Ferreira, Nikola Banovic, and Kent Lyons. 2015. Understanding the Challenges of Mobile Phone Usage Data. In Proceedings of the 17th International Conference on Human-Computer Interaction with Mobile Devices and Services (MobileHCI ’15), 504–514. DOI:https://doi.org/10.1145/2785830.2785891
  • Denzil Ferreira, Vassilis Kostakos, Alastair R. Beresford, Janne Lindqvist, and Anind K. Dey. 2015. Securacy: An Empirical Investigation of Android Applications’ Network Usage, Privacy and Security. In Proceedings of the 8th ACM Conference on Security & Privacy in Wireless and Mobile Networks (WiSec ’15), 11:1–11:11. DOI:https://doi.org/10.1145/2766498.2766506
  • Denzil Ferreira, Vassilis Kostakos, and Anind K. Dey. 2015. AWARE: Mobile Context Instrumentation Framework. Front. ICT 2, (2015). DOI:https://doi.org/10.3389/fict.2015.00006
  • Jorge Goncalves, Simo Hosio, Denzil Ferreira, Theodoros Anagnostopoulos, and Vassilis Kostakos. 2015. Bazaar: A Situated Crowdsourcing Market. In Adjunct Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2015 ACM International Symposium on Wearable Computers (UbiComp/ISWC’15 Adjunct), 1385–1390. DOI:https://doi.org/10.1145/2800835.2800974
  • Simon L. Jones, Denzil Ferreira, Simo Hosio, Jorge Goncalves, and Vassilis Kostakos. 2015. Revisitation Analysis of Smartphone App Use. In Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp ’15), 1197–1208. DOI:https://doi.org/10.1145/2750858.2807542
  • Vassilis Kostakos and Denzil Ferreira. 2015. The Rise of Ubiquitous Instrumentation. Front. ICT 2, (2015). DOI:https://doi.org/10.3389/fict.2015.00003

2014

  • Denzil Ferreira, Jorge Goncalves, Vassilis Kostakos, Louise Barkhuus, and Anind K. Dey. 2014. Contextual Experience Sampling of Mobile Application Micro-usage. In Proceedings of the 16th International Conference on Human-computer Interaction with Mobile Devices & Services (MobileHCI ’14), 91–100. DOI:https://doi.org/10.1145/2628363.2628367
  • Jorge Goncalves, Simo Hosio, Denzil Ferreira, and Vassilis Kostakos. 2014. Game of Words: Tagging Places Through Crowdsourcing on Public Displays. In Proceedings of the 2014 Conference on Designing Interactive Systems (DIS ’14), 705–714. DOI:https://doi.org/10.1145/2598510.2598514
  • Jorge Goncalves, Pratyush Pandab, Denzil Ferreira, Mohammad Ghahramani, Guoying Zhao, and Vassilis Kostakos. 2014. Projective Testing of Diurnal Collective Emotion. In Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp ’14), 487–497. DOI:https://doi.org/10.1145/2632048.2636067
  • Simo Hosio, Jorge Goncalves, Vili Lehdonvirta, Denzil Ferreira, and Vassilis Kostakos. 2014. Situated Crowdsourcing Using a Market Model. In Proceedings of the 27th Annual ACM Symposium on User Interface Software and Technology (UIST ’14), 55–64. DOI:https://doi.org/10.1145/2642918.2647362
  • Weiwei Jiang, Denzil Ferreira, Jani Ylioja, Jorge Goncalves, and Vassilis Kostakos. 2014. Pulse: Low Bitrate Wireless Magnetic Communication for Smartphones. In Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp ’14), 261–265. DOI:https://doi.org/10.1145/2632048.2632094
  • Yong Liu, Jorge Goncalves, Denzil Ferreira, Simo Hosio, and Vassilis Kostakos. 2014. Identity Crisis of Ubicomp?: Mapping 15 Years of the Field’s Development and Paradigm Change. In Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp ’14), 75–86. DOI:https://doi.org/10.1145/2632048.2632086
  • Yong Liu, Jorge Goncalves, Denzil Ferreira, Bei Xiao, Simo Hosio, and Vassilis Kostakos. 2014. CHI 1994-2013: Mapping Two Decades of Intellectual Progress Through Co-word Analysis. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI ’14), 3553–3562. DOI:https://doi.org/10.1145/2556288.2556969
  • Karel Vandenbroucke, Denzil Ferreira, Jorge Goncalves, Vassilis Kostakos, and Katrien De Moor. 2014. Mobile Cloud Storage: A Contextual Experience. In Proceedings of the 16th International Conference on Human-computer Interaction with Mobile Devices & Services (MobileHCI ’14), 101–110. DOI:https://doi.org/10.1145/2628363.2628386

2013

  • Denzil Ferreira. 2013. AWARE : a mobile context instrumentation middleware to collaboratively understand human behavior. Dissertation, University of Oulu.
  • Denzil Ferreira, Eija Ferreira, Jorge Goncalves, Vassilis Kostakos, and Anind K. Dey. 2013. Revisiting Human-battery Interaction with an Interactive Battery Interface. In Proceedings of the 2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp ’13), 563–572. DOI:https://doi.org/10.1145/2493432.2493465
  • Denzil Ferreira, Christian Koehler, Evangelos Karapanos, and Vassilis Kostakos. 2013. Ubiquitous Mobile Instrumentation. In Proceedings of the 2013 ACM Conference on Pervasive and Ubiquitous Computing Adjunct Publication (UbiComp ’13 Adjunct), 1409–1412. DOI:https://doi.org/10.1145/2494091.2496043
  • Jorge Goncalves, Denzil Ferreira, Simo Hosio, Yong Liu, Jakob Rogstadius, Hannu Kukka, and Vassilis Kostakos. 2013. Crowdsourcing on the Spot: Altruistic Use of Public Displays, Feasibility, Performance, and Behaviours. In Proceedings of the 2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp ’13), 753–762. DOI:https://doi.org/10.1145/2493432.2493481
  • Andreas Komninos, Jeries Besharat, Denzil Ferreira, and John Garofalakis. 2013. HotCity: Enhancing Ubiquitous Maps with Social Context Heatmaps. In Proceedings of the 12th International Conference on Mobile and Ubiquitous Multimedia (MUM ’13), 52:1–52:10. DOI:https://doi.org/10.1145/2541831.2543694

2012

  • Denzil Ferreira, Vassilis Kostakos, and Anind K. Dey. 2012. Lessons Learned from Large-Scale User Studies: Using Android Market as a Source of Data. IJMHCI 4, 3 (2012), 28–43. DOI:https://doi.org/10.4018/jmhci.2012070102
  • Tomi Juntunen, Vassilis Kostakos, Mikko Perttunen, and Denzil Ferreira. 2012. Web Tool for Traffic Engineers: Direct Manipulation and Visualization of Vehicular Traffic Using Google Maps. In Proceeding of the 16th International Academic MindTrek Conference (MindTrek ’12), 209–210. DOI:https://doi.org/10.1145/2393132.2393173
  • Jouko Kaasila, Denzil Ferreira, Vassilis Kostakos, and Timo Ojala. 2012. Testdroid: Automated Remote UI Testing on Android. In Proceedings of the 11th International Conference on Mobile and Ubiquitous Multimedia (MUM ’12), 28:1–28:4. DOI:https://doi.org/10.1145/2406367.2406402
  • Tomas Lindén, Tommi Heikkinen, Vassilis Kostakos, Denzil Ferreira, and Timo Ojala. 2012. Towards Multi-application Public Interactive Displays. In Proceedings of the 2012 International Symposium on Pervasive Displays (PerDis ’12), 9:1–9:5. DOI:https://doi.org/10.1145/2307798.2307807

2011

  • Anind K. Dey, Katarzyna Wac, Denzil Ferreira, Kevin Tassini, Jin-Hyuk Hong, and Julian Ramos. 2011. Getting Closer: An Empirical Investigation of the Proximity of User to Their Smart Phones. In Proceedings of the 13th International Conference on Ubiquitous Computing (UbiComp ’11), 163–172. DOI:https://doi.org/10.1145/2030112.2030135
  • Denzil Ferreira, Anind K. Dey, and Vassilis Kostakos. 2011. Understanding Human-Smartphone Concerns: A Study of Battery Life. In Pervasive Computing (Lecture Notes in Computer Science), 19–33.
  • Jayant Venkatanathan, Denzil Ferreira, Michael Benisch, Jialiu Lin, Evangelos Karapanos, Vassilis Kostakos, Norman Sadeh, and Eran Toch. 2011. Improving Users’ Consistency When Recalling Location Sharing Preferences. In Human-Computer Interaction – INTERACT 2011 (Lecture Notes in Computer Science), 380–387.
  • Jayant Venkatanathan, Jialiu Lin, Michael Benisch, Denzil Ferreira, Evangelos Karapanos, Vassilis Kostakos, Norman Sadeh, and Eran Toch. 2011. Who, When, Where: Obfuscation Preferences in Location-Sharing Applications. CARNEGIE-MELLON UNIV PITTSBURGH PA INST OF SOFTWARE RESEARCH INTERNAT. Retrieved February 13, 2019 from https://apps.dtic.mil/docs/citations/ADA556698