Search results for "INTERNET OF THINGS"
showing 10 items of 150 documents
Lietu internets kā pakalpojums
2018
Darba mērķis ir izstrādāt lietu interneta platformas arhitektūru, kura nodrošina daudzlietotāju atbalstu, ir viegli uzstādāma no galalietotāju skatupunkta, un kuru ir iespējams piedāvāt potenciāliem lietotājiem kā pakalpojumu, parūpējoties par tās uzstādīšanu un uzturēšanu. Darba gaitā ir veikts OpenHAB un Home Assistant lietu interneta platformu funkcionalitāšu apskats, salīdzinājums un to piemērotības izvērtējums daudzlietotāju arhitektūras izveidošanai. Darba rezultātā ir izveidots Home Assistant platformas arhitektūras risinājums, kurš ļauj veikt vienkāršu sākotnējo platformas uzstādīšanu, nodrošina daudzlietotāju atbalstu, izmantojot vairākas platformas instances vienā resursdatorā, un…
MAC Protocols for WuR Enabled WSNs : Design and Performance Evaluation
2017
Master's thesis Information- and communication technology IKT591 - University of Agder 2017 Increasing energy efficiency is a challenging task for protocol design in wireless sensor networks (WSNs) as well as in Internet of things (IoT). Traditionally, duty-cycled (DC) protocols have been widely adopted for data transmissions in WSNs for energy conservation by reducing idle listening and overhearing. Recently, wake-up radio (WuR) has merged as a promising technique to replace DC protocols thanks to its superior performance in both network lifetime and transmission latency. This thesis work focuses on the design and performance evaluation of WuR-enabled MAC protocols considering various traf…
A User-Centered Approach to Digital Household Risk Management
2020
Internet of Things (IoT) is expected to become as common as electricity (OECD 2016) and there is a high probability for connected homes to become central parts of critical societal. IoT technologies might access, manage and record sensitive data about citizens and, as they become more and more pervasive, unintended data breaches reports increase every week. However, most of the tools designed to protect users’ privacy and personal data on IoT devices fail to contemplate the experience of persons with disabilities, elderly and other vulnerable categories of people. As a consequence, they are forced to rely on the help of family members or other related persons with technical skills, as frequ…
Improving IoT Communications Based on Smart Routing Algorithms
2018
International audience; Due to the recorded success by Internet of Things (IoT) technology, more and more domains use it as a communications and exchange network such as e-health, smart cities, vehicles, etc. IoT don’t stop integrating an important number of components and objects that are characterized by their complexity and heterogeneity. Such constraints make the existing routings protocols unsuitable for IoT communications. To accomplish all the expected tasks and satisfy the user services, it is important to guarantee a quality of communication that answers to the requirements of the various applications in terms of data and processing (availability, integrity, efficiency, etc.). The …
Decentralized Lightweight Group Key Management for Dynamic Access Control in IoT Environments
2020
Rapid growth of Internet of Things (IoT) devices dealing with sensitive data has led to the emergence of new access control technologies in order to maintain this data safe from unauthorized use. In particular, a dynamic IoT environment, characterized by a high signaling overhead caused by subscribers' mobility, presents a significant concern to ensure secure data distribution to legitimate subscribers. Hence, for such dynamic environments, group key management (GKM) represents the fundamental mechanism for managing the dissemination of keys for access control and secure data distribution. However, existing access control schemes based on GKM and dedicated to IoT are mainly based on ce…
Performance comparison of container orchestration platforms with low cost devices in the fog, assisting Internet of Things applications
2020
Abstract In the last decade there has been an increasing interest and demand on the Internet of Things (IoT) and its applications. But, when a high level of computing and/or real time processing is required for these applications, different problems arise due to their requirements. In this context, low cost autonomous and distributed Small Board Computers (SBC) devices, with processing, storage capabilities and wireless communications can assist these IoT networks. Usually, these SBC devices run an operating system based on Linux. In this scenario, container-based technologies and fog computing are an interesting approach and both have led to a new paradigm in how devices cooperate, improvi…
Internet of things Enabling Smart School : An Overview
2021
Internet of things (IoT) is making its way in every field of life. Education is not an exception. IoT is making landmark achievements in its applications in the field of education. This paper presents an overview of the key IoT applications in the field of education from the perspective of school management, teachers, and learners enabling smart school concept and challenges and limitations in embarking IoT in educational settings. peerReviewed
VentQsys: Low-cost open IoT system for CO2 monitoring in classrooms
2021
AbstractIn educational context, a source of nuisance for students is carbon dioxide ($$CO_2$$ C O 2 ) concentration due to closed rooms and lack of ventilation or circulatory air. Also, in the pandemic context, ventilation in indoor environments has been proven as a good tool to control the COVID-19 infections. In this work, it is presented a low cost IoT-based open-hardware and open-software monitoring system to control ventilation, by measuring carbon dioxide ($$CO_2$$ C O 2 ), temperature and relative humidity. This system provides also support for automatic updating, auto-self calibration and adds some Cloud and Edge offloading of computational features for mapping functionalities. From…
1<sup>st</sup> International Workshop on Sustainable Internet and Internet for Sustainability (SustaInet 2011
2011
We are pleased to present the proceedings of the First International Workshop on Sustainable Internet and Internet for Sustainability (SustaInet 2011), held in conjunction with WoWMoM 2011.
Radiotaajuisen etätunnistuksen tietoturvaongelmat esineiden Internetissä
2016
Radiotaajuinen etätunnistus (RFID, engl. radio frequency identification) on viivakoodiin verrattavissa oleva radiotaajuuksilla toimiva etätunnistusjärjestelmä. RFID on eräs esineiden Internetin aistitason tekniikoista, ja sitä voidaan käyttää esineiden väliseen langattomaan tunnistukseen ja tiedonsiirtoon. Tutkielma esittelee tekniikkaan liittyviä tietoturvaongelmia ja mahdollisia ratkaisukeinoja. RFID-järjestelmät ovat alttiita useille hyökkäyksille, mutta niiden käytöstä voi aiheutua myös tahattomia ongelmatilanteita, muun muassa törmäyskonflikteja ja standardiongelmia. Radiotaajuisen etätunnistuksen tietoturvaongelmia voidaan pyrkiä estämään käyttämällä erilaisia tietoturvaprotokollia, j…