Ali Asghar Nazari Shirehjini - IEEE Xplore Author Profile
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Ali Asghar Nazari Shirehjini

Publications
14
Citations
251
Publications by Year
20102025
Co-Authors:
Show All Co-Authors (14)
Image of author Ali Asghar Nazari Shirehjini

Ali Asghar Nazari Shirehjini

Affiliation

DISCOVER Lab
University of Ottawa
Ottawa, ON, Canada

Publication Topics

Biography

Ali Asghar Nazari Shirehjini received the Ph.D. degree in computer science from the Technische Universität Darmstadt, Darmstadt, Germany, in 2008.,He is currently a Senior Researcher at the TecO Laboratory, Karlsruhe Institute of Technology, Karlsruhe, Germany. From December 2008 to April 2011, he was one of the four Vision 2010 postdoctoral fellows at the University of Ottawa. From 2001 to 2008, he was with the Fraunhofer Institute for Computer Graphics and GMD-IPSI in Darmstadt, Germany. His research interests include ambient intelligence, context awareness, interaction with smart spaces, mobile 3-D user interfaces, rapid prototyping, context-aware systems, context-aware game streaming, and massively multiplayer online gaming.(Based on document published on 10 October 2012).
Publications
14
Citations
251
Publications by Year
20102025
Co-Authors:
Show All Co-Authors (14)
Author's Published Works

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Device-Free Human Activity Recognition: A Systematic Literature Review

Majid Ghosian Moghaddam;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

IEEE Open Journal of Instrumentation and Measurement
Year: 2025 | Volume: 4 | Journal Article |
Human activity recognition (HAR) has become a topic of interest in recent years. While device-based, object-tagged, and camera-based approaches to HAR have many advantages, device-free HAR offers new contributions to the field. Unlike device-based or object-tagged methods, it does not require users to carry sensory devices, and unlike camera-based methods, it respects privacy. Despite the signific...Show More

Device-Free Human Activity Recognition: A Systematic Literature Review

Majid Ghosian Moghaddam;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

Year: 2025 | Volume: 4 | Journal Article |

A WiFi-Based Method for Recognizing Fine-Grained Multiple-Subject Human Activities

Majid Ghosian Moghaddam;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

IEEE Transactions on Instrumentation and Measurement
Year: 2023 | Volume: 72 | Journal Article |
Cited by: Papers (9)
Device-free human activity recognition (HAR) has gained attention in recent years. While much has been done in coarse-grained HAR, the recognition of fine-grained human activities is still a research challenge. In this article, we present a novel method to combine channel state information (CSI) and received signal strength indicator (RSSI) signals at the feature level to improve the performance o...Show More

A WiFi-Based Method for Recognizing Fine-Grained Multiple-Subject Human Activities

Majid Ghosian Moghaddam;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

Year: 2023 | Volume: 72 | Journal Article |

A WiFi-based System for Recognizing Fine-grained Multiple-Subject Human Activities

Majid Ghosian Moghaddam;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

2022 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)
Year: 2022 | Conference Paper |
Cited by: Papers (12)
Device-free human activity recognition has become a topic of much interest in recent years. While there is much existing work on course-grained human activity recognition, the recognition of fine-grained human activities is still a research challenge. In this paper, we propose a new approach using CSI and RSSI WiFi data to recognize fine-grained human activities. We selected 4 different fine-grain...Show More

A WiFi-based System for Recognizing Fine-grained Multiple-Subject Human Activities

Majid Ghosian Moghaddam;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

Year: 2022 | Conference Paper |

An Empirical Approach to Modeling User-System Interaction Conflicts in Smart Homes

Fereshteh Jadidi Miandashti;Mohammad Izadi;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

IEEE Transactions on Human-Machine Systems
Year: 2020 | Volume: 50, Issue: 6 | Journal Article |
Cited by: Papers (14)
Conflict is one of the important factors affecting user satisfaction and trust in smart environments, yet conflict modeling in mixed initiative smart environments has not been sufficiently explored. Most of the existing literature on conflict in smart homes are centered on conflicts between users. Although research has shown that about 75% of conflicts are between users and system [1], only a few ...Show More

An Empirical Approach to Modeling User-System Interaction Conflicts in Smart Homes

Fereshteh Jadidi Miandashti;Mohammad Izadi;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

Year: 2020 | Volume: 50, Issue: 6 | Journal Article |

The Effect of Room Complexity on Physical Object Selection Performance in 3-D Mobile User Interfaces

Maryam Rezaie;Morteza Malekmakan;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

IEEE Transactions on Human-Machine Systems
Year: 2020 | Volume: 50, Issue: 4 | Journal Article |
Cited by: Papers (1)
An important challenge in smart environments is how to manipulate the smart objects. Although mobile applications are typically used for controlling a smart environment, no previous study has evaluated the users performance in manipulating smart objects under different environmental complexities. This article presents an experimental comparison between three different selection techniques 3-D, 2-D...Show More

The Effect of Room Complexity on Physical Object Selection Performance in 3-D Mobile User Interfaces

Maryam Rezaie;Morteza Malekmakan;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

Year: 2020 | Volume: 50, Issue: 4 | Journal Article |

Bandwidth On-Demand for Multimedia Big Data Transfer Across Geo-Distributed Cloud Data Centers

Abdulsalam Yassine;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

IEEE Transactions on Cloud Computing
Year: 2020 | Volume: 8, Issue: 4 | Journal Article |
Cited by: Papers (23)
Multimedia content is massively generated from various applications and devices, and processed in cloud data centers. Multimedia service providers prefer that their data are processed in data centers close to users in order to offer them high performance and reliable multimedia services that meet the requirements specified in the Service Level of Agreement (SLA). This requires transferring huge da...Show More

Bandwidth On-Demand for Multimedia Big Data Transfer Across Geo-Distributed Cloud Data Centers

Abdulsalam Yassine;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

Year: 2020 | Volume: 8, Issue: 4 | Journal Article |

A meta user interface for interaction with mixed reality environments

Aida Mostafazadeh;Ali Asghar Nazari Shirehjini;Sara Daraei;Negar Khojasteh;Shervin Shirmohammadi

2015 IEEE International Symposium on Haptic, Audio and Visual Environments and Games (HAVE)
Year: 2015 | Conference Paper |
Cited by: Papers (1)
The aim of this paper is the design and development of a novel user interface to interact with a meta system. Our focus is rather on interacting with Ambient Intelligence as a whole, which would for example enable users to influence the overall behaviors and attributes of dynamic device compositions. We call such interfaces Meta User Interfaces. The design details of a proposed user interface as w...Show More

A meta user interface for interaction with mixed reality environments

Aida Mostafazadeh;Ali Asghar Nazari Shirehjini;Sara Daraei;Negar Khojasteh;Shervin Shirmohammadi

Year: 2015 | Conference Paper |

The clutch: two-handed mobile multi-touch 3D object translation and manipulation

Ali Asghar Nazari Shirehjini;Mohammad Chegini;Shervin Shirmohammadi

2015 IEEE International Symposium on Haptic, Audio and Visual Environments and Games (HAVE)
Year: 2015 | Conference Paper |
Cited by: Papers (1)
Nowadays, handheld devices such as smartphones provide users with multi-touch input screens. Displaying interactive and touch-enabled 3D environments in such handheld devices has become popular in different applications like games or virtual reality. Technologies such as Web3D and WebGL have made the creation and display of 3D environments in mobile devices easier than ever. However, object manipu...Show More

The clutch: two-handed mobile multi-touch 3D object translation and manipulation

Ali Asghar Nazari Shirehjini;Mohammad Chegini;Shervin Shirmohammadi

Year: 2015 | Conference Paper |

Equipment Location in Hospitals Using RFID-Based Positioning System

Ali Asghar Nazari Shirehjini;Abdulsalam Yassine;Shervin Shirmohammadi

IEEE Transactions on Information Technology in Biomedicine
Year: 2012 | Volume: 16, Issue: 6 | Journal Article |
Cited by: Papers (77)
Throughout various complex processes within hospitals, context-aware services and applications can help to improve the quality of care and reduce costs. For example, sensors and radio frequency identification (RFID) technologies for e-health have been deployed to improve the flow of material, equipment, personal, and patient. Bed tracking, patient monitoring, real-time logistic analysis, and criti...Show More

Equipment Location in Hospitals Using RFID-Based Positioning System

Ali Asghar Nazari Shirehjini;Abdulsalam Yassine;Shervin Shirmohammadi

Year: 2012 | Volume: 16, Issue: 6 | Journal Article |

An RFID-Based Position and Orientation Measurement System for Mobile Objects in Intelligent Environments

Ali Asghar Nazari Shirehjini;Abdulsalam Yassine;Shervin Shirmohammadi

IEEE Transactions on Instrumentation and Measurement
Year: 2012 | Volume: 61, Issue: 6 | Journal Article |
Ambient intelligence (AmI) considers responsive environments in which applications and services adapt their behavior according to the user's needs and changing context. One of the most challenging aspects for many applications in AmI environments is location and orientation of the surrounding objects. This is especially important for effective cooperation among mobile physical objects in such smar...Show More

An RFID-Based Position and Orientation Measurement System for Mobile Objects in Intelligent Environments

Ali Asghar Nazari Shirehjini;Abdulsalam Yassine;Shervin Shirmohammadi

Year: 2012 | Volume: 61, Issue: 6 | Journal Article |

Context-aware 3D object streaming for mobile games

Hesam Rahimi;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

2011 10th Annual Workshop on Network and Systems Support for Games
Year: 2011 | Conference Paper |
In this demo we showcase a method for the selective streaming of 3D objects in online mobile games. The proposed method ranks each object by its importance for the current activity performed by the player, and transmits the most important objects first. Our goal is to improve the real-time response and interactivity of networked VEs and games through an efficient context-aware 3D object selection ...Show More

Context-aware 3D object streaming for mobile games

Hesam Rahimi;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

Year: 2011 | Conference Paper |

Context-aware prioritized game streaming

Hesam Rahimi;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

2011 IEEE International Conference on Multimedia and Expo
Year: 2011 | Conference Paper |
Cited by: Papers (12)
In this paper, we describe our proposed mechanism for a context-aware progressive 3D streaming for virtual environments (VEs) such as games running on mobile handheld devices. Our goal is to optimize the efficiency of streaming update messages in such environments by providing a new, dynamic, and context-aware method for selecting and prioritizing objects.Show More

Context-aware prioritized game streaming

Hesam Rahimi;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

Year: 2011 | Conference Paper |

Unsynchronized multiplayer networked games: Feasibility with time rewind

Hesam Rahimi;Saurabh Ratti;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

2010 9th Annual Workshop on Network and Systems Support for Games
Year: 2010 | Conference Paper |
Cited by: Papers (1)
This paper presents the findings of latency testing on a game with time rewind player abilities, built on a proposed engine with the concept of unsynchronized networked game instances.Show More

Unsynchronized multiplayer networked games: Feasibility with time rewind

Hesam Rahimi;Saurabh Ratti;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi

Year: 2010 | Conference Paper |

An Intelligent Agent-Based Model for Future Personal Information Markets

Abdulsalam Yassine;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi;Thomas T. Tran

2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology
Year: 2010 | Conference Paper |
Cited by: Papers (5)
Collection and analysis of personal information is among the most far-reaching developments in online retail practices. While the potential value of harnessing data about people is expected to improve the online service offerings, it raises reasonable concerns about privacy. Rather than cutting off opportunities to make personal data available for enhancing online services, we introduce a model wh...Show More

An Intelligent Agent-Based Model for Future Personal Information Markets

Abdulsalam Yassine;Ali Asghar Nazari Shirehjini;Shervin Shirmohammadi;Thomas T. Tran

Year: 2010 | Volume: 2 | Conference Paper |

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