Denzil Ferreira

ORCID

Publication Activity (10 Years)

Years Active: 2011-2023
Publications (10 Years): 68

Top Venues

University of Oulu, Finland (PHD)

Education History

University of Oulu, Finland

PHD

Publications

Niels van Berkel, Simon D'Alfonso, Rio Kurnia Susanto, Denzil Ferreira, Vassilis Kostakos
AWARE-Light: a smartphone tool for experience sampling and digital phenotyping. Pers. Ubiquitous Comput. 27 (2) (2023)
Elina Kuosmanen, Eetu Huusko, Niels van Berkel, Francisco Nunes, Julio Vega, Jorge Gonçalves, Mohamed Khamis, Augusto Esteves, Denzil Ferreira, Simo Hosio
Exploring crowdsourced self-care techniques: A study on Parkinson's disease. Int. J. Hum. Comput. Stud. 177 (2023)
Saba Kheirinejad, Aku Visuri, Denzil Ferreira, Simo Hosio
"Leave your smartphone out of bed": quantitative analysis of smartphone use effect on sleep quality. Pers. Ubiquitous Comput. 27 (2) (2023)
Kennedy Opoku Asare, Isaac Moshe, Yannik Terhorst, Julio Vega, Simo Hosio, Harald Baumeister, Laura Pulkki-Råback, Denzil Ferreira
Mood ratings and digital biomarkers from smartphone and wearable data differentiates and predicts depression status: A longitudinal data analysis. Pervasive Mob. Comput. 83 (2022)
Elina Kuosmanen, Aku Visuri, Saba Kheirinejad, Niels van Berkel, Heli Koskimäki, Denzil Ferreira, Simo Hosio
How Does Sleep Tracking Influence Your Life?: Experiences from a Longitudinal Field Study with a Wearable Ring. Proc. ACM Hum. Comput. Interact. 6 (MHCI) (2022)
Kennedy Opoku Asare, Aku Visuri, Julio Vega, Denzil Ferreira
Me in the Wild: An Exploratory Study Using Smartphones to Detect the Onset of Depression. MobiHealth (2021)
Aku Visuri, Niels van Berkel, Jorge Gonçalves, Reza Rawassizadeh, Denzil Ferreira, Vassilis Kostakos
Understanding usage style transformation during long-term smartwatch use. Pers. Ubiquitous Comput. 25 (3) (2021)
Andy Alorwu, Saba Kheirinejad, Niels van Berkel, Marianne Kinnula, Denzil Ferreira, Aku Visuri, Simo Hosio
Assessing MyData Scenarios: Ethics, Concerns, and the Promise. CHI (2021)
Ella Peltonen, Parsa Sharmila, Kennedy Opoku Asare, Aku Visuri, Eemil Lagerspetz, Denzil Ferreira
When phones get personal: Predicting Big Five personality traits from application usage. Pervasive Mob. Comput. 69 (2020)
Yuuki Nishiyama, Denzil Ferreira, Yusaku Eigen, Wataru Sasaki, Tadashi Okoshi, Jin Nakazawa, Anind K. Dey, Kaoru Sezaki
IOS Crowd-Sensing Won't Hurt a Bit!: AWARE Framework and Sustainable Study Guideline for iOS Platform. HCI (23) (2020)
Abdallah El Ali, Monica Perusquía-Hernández, Pete Denman, Yomna Abdelrahman, Mariam Hassib, Alexander Meschtscherjakov, Denzil Ferreira, Niels Henze
MEEC: First Workshop on Momentary Emotion Elicitation and Capture. CHI Extended Abstracts (2020)
Elina Kuosmanen, Valerii Kan, Aku Visuri, Simo Hosio, Denzil Ferreira
Let's Draw: Detecting and Measuring Parkinson's Disease on Smartphones. CHI (2020)
Yuuki Nishiyama, Denzil Ferreira, Wataru Sasaki, Tadashi Okoshi, Jin Nakazawa, Anind K. Dey, Kaoru Sezaki
Using iOS for inconspicuous data collection: a real-world assessment. UbiComp/ISWC Adjunct (2020)
Niels van Berkel, Jorge Gonçalves, Peter Koval, Simo Hosio, Tilman Dingler, Denzil Ferreira, Vassilis Kostakos
Context-Informed Scheduling and Analysis: Improving Accuracy of Mobile Self-Reports. CHI (2019)
Chu Luo, Aku Visuri, Simon Klakegg, Niels van Berkel, Zhanna Sarsenbayeva, Antti Möttönen, Jorge Gonçalves, Theodoros Anagnostopoulos, Denzil Ferreira, Huber Flores, Eduardo Velloso, Vassilis Kostakos
Energy-efficient prediction of smartphone unlocking. Pers. Ubiquitous Comput. 23 (1) (2019)
Kennedy Opoku Asare, Aku Visuri, Denzil Ferreira
Towards early detection of depression through smartphone sensing. UbiComp/ISWC Adjunct (2019)
Elina Kuosmanen, Valerii Kan, Aku Visuri, Assam Boudjelthia, Lokmane Krizou, Denzil Ferreira
Measuring Parkinson's disease motor symptoms with smartphone-based drawing tasks. UbiComp/ISWC Adjunct (2019)
Elina Kuosmanen, Valerii Kan, Julio Vega, Aku Visuri, Yuuki Nishiyama, Anind K. Dey, Simon Harper, Denzil Ferreira
Challenges of Parkinson's Disease: User Experiences with STOP. MobileHCI (2019)
Niels van Berkel, Jorge Gonçalves, Lauri Lovén, Denzil Ferreira, Simo Hosio, Vassilis Kostakos
Effect of experience sampling schedules on response rate and recall accuracy of objective self-reports. Int. J. Hum. Comput. Stud. 125 (2019)
Upal Mahbub, Jukka Komulainen, Denzil Ferreira, Rama Chellappa
Continuous Authentication of Smartphones Based on Application Usage. IEEE Trans. Biom. Behav. Identity Sci. 1 (3) (2019)
Jiangtao Wang, Yasha Wang, Daqing Zhang, Jorge Gonçalves, Denzil Ferreira, Aku Visuri, Sen Ma
Learning-Assisted Optimization in Mobile Crowd Sensing: A Survey. IEEE Trans. Ind. Informatics 15 (1) (2019)
Upal Mahbub, Jukka Komulainen, Denzil Ferreira, Rama Chellappa
Continuous Authentication of Smartphones Based on Application Usage. CoRR (2018)
Niels van Berkel, Denzil Ferreira, Vassilis Kostakos
The Experience Sampling Method on Mobile Devices. ACM Comput. Surv. 50 (6) (2018)
Elina Kuosmanen, Valerii Kan, Aku Visuri, Julio Vega, Yuuki Nishiyama, Anind K. Dey, Simon Harper, Denzil Ferreira
Mobile-based Monitoring of Parkinson's Disease. MUM (2018)
Aku Visuri, Kennedy Opoku Asare, Elina Kuosmanen, Yuuki Nishiyama, Denzil Ferreira, Zhanna Sarsenbayeva, Jorge Gonçalves, Niels van Berkel, Greg Wadley, Vassilis Kostakos, Sarah Clinch, Oludamilare Matthews, Simon Harper, Amy Jenkins, Stephen Snow, m. c. schraefel
Ubiquitous Mobile Sensing: Behaviour, Mood, and Environment. UbiComp/ISWC Adjunct (2018)
Valerii Kan, Dorina Rajanen, Kennedy Opoku Asare, Denzil Ferreira
STOP: A Smartphone-based Game for Parkinson's Disease Medication Adherence. UbiComp/ISWC Adjunct (2018)
Assam Boudjelthia, Sofeem Nasim, Janne Eskola, Joshua Muyiwa Adeegbe, Oula Hourula, Simon Klakegg, Denzil Ferreira
Enabling Mid-air Browser Interaction with Leap Motion. UbiComp/ISWC Adjunct (2018)
Kennedy Opoku Asare, Tore Leikanger, Christian Schuss, Simon Klakegg, Aku Visuri, Denzil Ferreira
S3: environmental fingerprinting with a credit card-sized NFC powered sensor board. MobileHCI Adjunct (2018)
Simon Klakegg, Jorge Gonçalves, Chu Luo, Aku Visuri, Alexey Popov, Niels van Berkel, Zhanna Sarsenbayeva, Vassilis Kostakos, Simo Hosio, Scott Savage, Alexander Bykov, Igor V. Meglinski, Denzil Ferreira
Assisted Medication Management in Elderly Care Using Miniaturised Near-Infrared Spectroscopy. Proc. ACM Interact. Mob. Wearable Ubiquitous Technol. 2 (2) (2018)
Yuuki Nishiyama, Anind K. Dey, Denzil Ferreira, Takuro Yonezawa, Jin Nakazawa
Senbay: a platform for instantly capturing, integrating, and restreaming of synchronized multiple sensor-data stream. MobileHCI Adjunct (2018)
Hanna-Leena Huttunen, Raija Halonen, Denzil Ferreira
Identifying bottlenecks in work processes: Elderly care. SeGAH (2018)
Yazan Barhoush, Miikka Mustonen, Denzil Ferreira, Georgi V. Georgiev, Daniel Nguyen, Matti Pouke
The gravity of thought: exploring positively surprising interactions. MobileHCI Adjunct (2018)
Zhanna Sarsenbayeva, Denzil Ferreira, Niels van Berkel, Chu Luo, Mikko Vaisanen, Vassilis Kostakos, Jorge Gonçalves
Vision-based happiness inference: a feasibility case-study. UbiComp/ISWC Adjunct (2017)
Eija Ferreira, Denzil Ferreira
Towards altruistic data quality assessment for mobile sensing. UbiComp/ISWC Adjunct (2017)
Simon Klakegg, Niels van Berkel, Aku Visuri, Hanna-Leena Huttunen, Simo Hosio, Chu Luo, Jorge Gonçalves, Denzil Ferreira
Designing a context-aware assistive infrastructure for elderly care. UbiComp/ISWC Adjunct (2017)
Aku Visuri, Denzil Ferreira, Susanna Pirttikangas, Vassilis Kostakos, Kåre Synnes, Janne Lindqvist, Yuuki Nishiyama
UbiMI'17: ubiquitous mobile instrumentation. UbiComp/ISWC Adjunct (2017)
Aku Visuri, Zeyun Zhu, Denzil Ferreira, Shin'ichi Konomi, Vassilis Kostakos
Smartphone detection of collapsed buildings during earthquakes. UbiComp/ISWC Adjunct (2017)
Yong Liu, Denzil Ferreira, Jorge Gonçalves, Simo Hosio, Pratyush Pandab, Vassilis Kostakos
Donating Context Data to Science: The Effects of Social Signals and Perceptions on Action-Taking. Interact. Comput. 29 (2) (2017)
Simon Klakegg, Niels van Berkel, Aku Visuri, Chu Luo, Jorge Gonçalves, Simo Hosio, Hanna-Leena Huttunen, Denzil Ferreira
Informing Caregivers Through an Assistive Tool: An Investigation of Elderly Care Metrics. BCS HCI (2017)
Aku Visuri, Niels van Berkel, Chu Luo, Jorge Gonçalves, Denzil Ferreira, Vassilis Kostakos
Challenges of Quantified-Self: Encouraging Self-Reported Data Logging During Recurrent Smartphone Usage. BCS HCI (2017)
Theodoros Anagnostopoulos, Juan Camilo Garcia, Jorge Gonçalves, Denzil Ferreira, Simo Hosio, Vassilis Kostakos
Environmental exposure assessment using indoor/outdoor detection on smartphones. Pers. Ubiquitous Comput. 21 (4) (2017)
Aku Visuri, Zhanna Sarsenbayeva, Niels van Berkel, Jorge Gonçalves, Reza Rawassizadeh, Vassilis Kostakos, Denzil Ferreira
Quantifying Sources and Types of Smartwatch Usage Sessions. CHI (2017)
Huber Flores, Rajesh Sharma, Denzil Ferreira, Vassilis Kostakos, Jukka Manner, Sasu Tarkoma, Pan Hui, Yong Li
Social-aware hybrid mobile offloading. Pervasive Mob. Comput. 36 (2017)
Andreas Komninos, Jeries Besharat, Denzil Ferreira, John D. Garofalakis, Vassilis Kostakos
Where's everybody? Comparing the use of heatmaps to uncover cities' tacit social context in smartphones and pervasive displays. J. Inf. Technol. Tour. 17 (4) (2017)
Aku Visuri, Simo Hosio, Denzil Ferreira
Exploring mobile ad formats to increase brand recollection and enhance user experience. MUM (2017)
Chu Luo, Miikka Kuutila, Simon Klakegg, Denzil Ferreira, Huber Flores, Jorge Gonçalves, Mika Mäntylä, Vassilis Kostakos
TestAWARE: A Laboratory-Oriented Testing Tool for Mobile Context-Aware Applications. Proc. ACM Interact. Mob. Wearable Ubiquitous Technol. 1 (3) (2017)
Hanna-Leena Huttunen, Simon Klakegg, Niels van Berkel, Aku Visuri, Denzil Ferreira, Raija Halonen
Understanding elderly care: a field-study for designing future homes. iiWAS (2017)
Aku Visuri, Niels van Berkel, Chu Luo, Jorge Gonçalves, Denzil Ferreira, Vassilis Kostakos
Predicting interruptibility for manual data collection: a cluster-based user model. MobileHCI (2017)
Anabela Berenguer, Jorge Gonçalves, Simo Hosio, Denzil Ferreira, Theodoros Anagnostopoulos, Vassilis Kostakos
Are Smartphones Ubiquitous?: An in-depth survey of smartphone adoption by seniors. IEEE Consumer Electron. Mag. 6 (1) (2017)
Sangwon Bae, Denzil Ferreira, Brian Suffoletto, Juan C. Puyana, Ryan Kurtz, Tammy Chung, Anind K. Dey
Detecting Drinking Episodes in Young Adults Using Smartphone-based Sensors. Proc. ACM Interact. Mob. Wearable Ubiquitous Technol. 1 (2) (2017)
Simo Hosio, Denzil Ferreira, Jorge Gonçalves, Niels van Berkel, Chu Luo, Muzamil Ahmed, Huber Flores, Vassilis Kostakos
Monetary Assessment of Battery Life on Smartphones. CHI (2016)
Niels van Berkel, Chu Luo, Theodoros Anagnostopoulos, Denzil Ferreira, Jorge Gonçalves, Simo Hosio, Vassilis Kostakos
A Systematic Assessment of Smartphone Usage Gaps. CHI (2016)
Chu Luo, Miikka Kuutila, Simon Klakegg, Denzil Ferreira, Huber Flores, Jorge Gonçalves, Vassilis Kostakos, Mika Mäntylä
How to validate mobile crowdsourcing design? leveraging data integration in prototype testing. UbiComp Adjunct (2016)
Matti Pouke, Jorge Gonçalves, Denzil Ferreira, Vassilis Kostakos
Practical simulation of virtual crowds using points of interest. Comput. Environ. Urban Syst. 57 (2016)
Ahsan Manzoor, Denzil Ferreira
Contact lingo keyboard. UbiComp Adjunct (2016)
Denzil Ferreira, Huber Flores, Karel Vandenbroucke, Aku Visuri
Online?: a study of smartphone Internet availability. MUM (2016)
Vassilis Kostakos, Denzil Ferreira, Jorge Gonçalves, Simo Hosio
Modelling smartphone usage: a markov state transition model. UbiComp (2016)
Denzil Ferreira, Christian Schuss, Chu Luo, Jorge Gonçalves, Vassilis Kostakos, Timo Rahkonen
Indoor light scavenging on smartphones. MUM (2016)
Denzil Ferreira, Tadashi Okoshi, Yuuki Nishiyama, Christian Koehler, Jung Wook Park, Andrés Lucero
international workshop on ubiquitous mobile instrumentation. UbiComp Adjunct (2016)
Huber Flores, Denzil Ferreira, Chu Luo, Vassilis Kostakos, Pan Hui, Rajesh Sharma, Sasu Tarkoma, Yong Li
Social-aware device-to-device communication: a contribution for edge and fog computing? UbiComp Adjunct (2016)
Theodoros Anagnostopoulos, Denzil Ferreira, Alexander Samodelkin, Muzamil Ahmed, Vassilis Kostakos
Cyclist-aware traffic lights through distributed smartphone sensing. Pervasive Mob. Comput. 31 (2016)
Simon L. Jones, Denzil Ferreira, Simo Hosio, Jorge Gonçalves, Vassilis Kostakos
Revisitation analysis of smartphone app use. UbiComp (2015)
Denzil Ferreira, Vassilis Kostakos, Anind K. Dey
AWARE: mobile context instrumentation framework. Frontiers ICT 2 (2015)
Niels van Berkel, Chu Luo, Denzil Ferreira, Jorge Gonçalves, Vassilis Kostakos
The curse of quantified-self: an endless quest for answers. UbiComp/ISWC Adjunct (2015)
Vassilis Kostakos, Denzil Ferreira
The Rise of Ubiquitous Instrumentation. Frontiers ICT 2 (2015)
Karen Church, Denzil Ferreira, Nikola Banovic, Kent Lyons
Understanding the Challenges of Mobile Phone Usage Data. MobileHCI (2015)
Jorge Gonçalves, Simo Hosio, Denzil Ferreira, Theodoros Anagnostopoulos, Vassilis Kostakos
Bazaar: a situated crowdsourcing market. UbiComp/ISWC Adjunct (2015)
Denzil Ferreira, Vassilis Kostakos, Alastair R. Beresford, Janne Lindqvist, Anind K. Dey
Securacy: an empirical investigation of Android applications' network usage, privacy and security. WISEC (2015)
Jorge Gonçalves, Pratyush Pandab, Denzil Ferreira, Mohammad Ghahramani, Guoying Zhao, Vassilis Kostakos
Projective testing of diurnal collective emotion. UbiComp (2014)
Jorge Gonçalves, Simo Hosio, Denzil Ferreira, Vassilis Kostakos
Game of words: tagging places through crowdsourcing on public displays. Conference on Designing Interactive Systems (2014)
Yong Liu, Jorge Gonçalves, Denzil Ferreira, Bei Xiao, Simo Hosio, Vassilis Kostakos
CHI 1994-2013: mapping two decades of intellectual progress through co-word analysis. CHI (2014)
Simo Hosio, Jorge Gonçalves, Vili Lehdonvirta, Denzil Ferreira, Vassilis Kostakos
Situated crowdsourcing using a market model. UIST (2014)
Yong Liu, Jorge Gonçalves, Denzil Ferreira, Simo Hosio, Vassilis Kostakos
Identity crisis of ubicomp?: mapping 15 years of the field's development and paradigm change. UbiComp (2014)
Weiwei Jiang, Denzil Ferreira, Jani Ylioja, Jorge Gonçalves, Vassilis Kostakos
Pulse: low bitrate wireless magnetic communication for smartphones. UbiComp (2014)
Denzil Ferreira, Jorge Gonçalves, Vassilis Kostakos, Louise Barkhuus, Anind K. Dey
Contextual experience sampling of mobile application micro-usage. Mobile HCI (2014)
Karel Vandenbroucke, Denzil Ferreira, Jorge Gonçalves, Vassilis Kostakos, Katrien De Moor
Mobile cloud storage: a contextual experience. Mobile HCI (2014)
Denzil Ferreira, Christian Koehler, Evangelos Karapanos, Vassilis Kostakos
Ubiquitous mobile instrumentation. UbiComp (Adjunct Publication) (2013)
Andreas Komninos, Jeries Besharat, Denzil Ferreira, John D. Garofalakis
HotCity: enhancing ubiquitous maps with social context heatmaps. MUM (2013)
Jorge Gonçalves, Denzil Ferreira, Simo Hosio, Yong Liu, Jakob Rogstadius, Hannu Kukka, Vassilis Kostakos
Crowdsourcing on the spot: altruistic use of public displays, feasibility, performance, and behaviours. UbiComp (2013)
Denzil Ferreira, Eija Ferreira, Jorge Gonçalves, Vassilis Kostakos, Anind K. Dey
Revisiting human-battery interaction with an interactive battery interface. UbiComp (2013)
Jouko Kaasila, Denzil Ferreira, Vassilis Kostakos, Timo Ojala
Testdroid: automated remote UI testing on Android. MUM (2012)
Denzil Ferreira, Vassilis Kostakos, Anind K. Dey
Lessons Learned from Large-Scale User Studies: Using Android Market as a Source of Data. Int. J. Mob. Hum. Comput. Interact. 4 (3) (2012)
Tomas Lindén, Tommi Heikkinen, Vassilis Kostakos, Denzil Ferreira, Timo Ojala
Towards multi-application public interactive displays. PerDis (2012)
Tomi Juntunen, Vassilis Kostakos, Mikko Perttunen, Denzil Ferreira
Web tool for traffic engineers: direct manipulation and visualization of vehicular traffic using Google maps. MindTrek (2012)
Denzil Ferreira, Emiliano Miluzzo, Jonna Häkkilä, Tom Lovett, Vassilis Kostakos
UbiMI: ubiquitous mobile instrumentation. UbiComp (2012)
Denzil Ferreira, Anind K. Dey, Vassilis Kostakos
Understanding Human-Smartphone Concerns: A Study of Battery Life. Pervasive (2011)
Jayant Venkatanathan, Denzil Ferreira, Michael Benisch, Jialiu Lin, Evangelos Karapanos, Vassilis Kostakos, Norman M. Sadeh, Eran Toch
Improving Users' Consistency When Recalling Location Sharing Preferences. INTERACT (1) (2011)
Anind K. Dey, Katarzyna Wac, Denzil Ferreira, Kevin Tassini, Jin-Hyuk Hong, Julian Ramos
Getting closer: an empirical investigation of the proximity of user to their smart phones. UbiComp (2011)

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Publication Activity (10 Years)

Top Topics

Top Venues

Denzil Ferreira