Search results for "things"
showing 10 items of 196 documents
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 …
A Self-powered Ambient Light Power Measurement Platform with Time-domain Readout
2021
Internet of Things (IoT) provides more and more adequate infrastructures for many applications and advanced services. This scenario promotes the ability to satisfy the growing demand for innovative measuring systems, increasingly popular consisting of intelligent nodes, totally wireless, easy to install, and that requires the least possible maintenance. In this context, this paper aims to contribute to state of the art with an energy-autonomous and battery-free measurement platform designed to measure the ambient light power when its level exceeds the sensitivity threshold. The measurement platform utilizes a single transducer to scavenge energy and concurrently measure the ambient light in…
Człowiek - zwierzę - rzecz w "Chłopach" Władysława Reymonta
2021
Powieść Reymonta sytuuje ludzi, zwierzęta, rośliny w jednym porządku – porządku natury. Jednak relacje pomiędzy ludźmi a zwierzętami mienią się ambiwalencjami. Z jednej strony dostrzec można somatyczną wspólnotę między kobietami a krowami, będącą podstawą współodczuwającej troski o innego i ujawniającą się w formach czułości, z drugiej zaś strony powieść opisuje sceny spontanicznego i bezmyślnego okrucieństwa wobec przede wszystkim dzikich zwierząt: srok, zająców, żołny (oślepionej smołą) etc. oraz wyraźnej ich reifikacji (zwierzę – „mechaniczna” zabawka). Celem artykułu jest zatem opisanie złożonego i niejednoznacznego charakteru międzygatunkowych relacji.
Avoimen lähdekoodin alustojen sopivuus älykotiin
2017
Internet of Things kasvaa jatkuvasti ja sen eräs suurimmista sovelluskohteista on älykoti. IoT:n ongelmana on kuitenkin ollut keskimäärin erittäin huono tietoturva ja tämä on heijastunut myös älykoteihin esimerkiksi hakkeroituina kameroina ja itkuhälyttiminä. Toinen, älykodissa erityisen suuri ongelma on kerätyn tiedon yksityisyys. Tässä tutkielmassa kartoitetaan, kuinka hyvin avoimen lähdekoodin ohjelmistot soveltuvat toimivan ja turvallisen älykodin toteuttamiseen. Turvallisuuden osalta painopisteenä on erityisesti etäyhteys. Tutkimus toteutettiin konstruktiivisena tutkimuksena. Se ei käsittele yksittäisiä ohjelmistoja kovin syvällisesti, vaan sen tarkoituksena oli saada kattavahko yleisk…
Blockchain Disrupting Fintech and the Banking System
2021
Nowadays society is profoundly changed by technology, velocity and productivity. While individuals are not yet prepared for holographic connection with banks or financial institutions, other innovative technologies have been adopted. Lately, a new world has been launched, personalized and adapted to reality. It has emerged and started to govern almost all daily activities due to the five key elements that are foundations of the technology: machine to machine (M2M), internet of things (IoT), big data, machine learning and artificial intelligence (AI). Competitive innovations are now on the market, helping with the connection between investors and borrowers—notably crowdfunding and peer-to-pe…
Design and implementation of a long-range low-power wake-up radio and customized DC-MAC protocol for LoRaWAN
2019
In this paper, we present the design and implementation of a long-rage wake-up radio (WuR) and customized duty cycled (DC) MAC protocol for wireless IoT devices. The WuRx achieves a sensivity of −70 dBm by consuming just 0.032 mA, thereby optimizing the energy consumption of battery powered long-range wireless IoT devices. Reducing the power consumption of these devices minimizes the overall costs when deployed in large scale.
An Ontology Model for Interoperability and Multi-organization Data Exchange
2020
Progress in the uptake and use of technologies such as Artificial Intelligence and the Internet of Things seems to be stalled by the colossal fragmentation of information and data standards. This complexity is compounded by issues of inter-organisational differences, hindering effective collaboration. There is a growing demand for cross-organizational integrations in regulated but decentralized environments. This paper introduces an ontology architecture where information is sliced into independent semantic layers, each focusing on a specific aspect of the data. By dissolving traditional monolithic data structures into layered, light semantic components, the necessity to maintain contextual…
Big Data Metadata Management in Smart Grids
2014
Smart home, smart grids, smart museum, smart cities, etc. are making the vision for living in smart environments come true. These smart environments are built based upon the Internet of Things paradigm where many devices and applications are involved. In these environments, data are collected from various sources in diverse formats. The data are then processed by different intelligent systems with the purpose of providing efficient system planning, power delivery, and customer operations. Even though there are known technologies for most of these smart environments, putting them together to make intelligent and context-aware systems is not an easy task. The reason is that there are semantic…
Lightweight Relay Selection in Multi-Hop Wake-Up Radio Enabled IoT Networks
2018
Wake-up Radios (WuRs) are becoming more popular in Internet of Things (IoT) networks owing to their overwhelming advantages such as low latency, high energy saving, and on-demand communication. In a multi-hop WuR-IoT network, route establishment between source and destination prior to actual data communications consumes a significant portion of energy. To reduce energy consumption and protocol overhead for route establishment, we propose a lightweight relay (LR) selection scheme, referred to as LR-WuR, where a lookup table and acknowledgment are used for next hop relay selection. We develop an analytical model to evaluate the performance of LR-WuR. Extensive simulations are performed to val…
A Self-Powered Long-range Wireless IoT Device based on LoRaWAN
2020
In this article, we propose a self-powered long-range wireless Internet-of-Things (IoT) device based on Long Range Wide Area Network (LoRaWAN) with various sensing capabilities. The nodes are designed based on ambient energy harvesting in such a way that these are self-sustainable throughout the components’ lifespan. Also, these nodes can be deployed on a large scale and are maintenance-free. In addition, these nodes can be deployed in remote places where the accessibility is limited, and maintenance is difficult. The wireless sensor nodes can be deployed both in indoor and outdoor environments with sufficient light levels for the solar panel, such as indoor lights in the indoor environment…