Search results for "Software deployment"
showing 10 items of 150 documents
Low-Power Wide-Area Networks for Sustainable IoT
2019
Low-power wide-area (LPWA) networks are attracting extensive attention because of their abilities to offer low-cost and massive connectivity to Internet of Things (IoT) devices distributed over wide geographical areas. This article provides a brief overview on the existing LPWA technologies and useful insights to aid the large-scale deployment of LPWA networks. Particularly, we first review the currently competing candidates of LPWA networks, such as narrowband IoT (NB-IoT) and long range (LoRa), in terms of technical fundamentals and large-scale deployment potential. Then we present two implementation examples on LPWA networks. By analyzing the field-test results, we identify several chall…
A Deployment Model to Extend Ethically Aligned AI Implementation Method ECCOLA
2021
There is a struggle in Artificial intelligence (AI) ethics to gain ground in actionable methods and models to be utilized by practitioners while developing and implementing ethically sound AI systems. AI ethics is a vague concept without a consensus of definition or theoretical grounding and bearing little connection to practice. Practice involving primarily technical tasks like software development is not aptly equipped to process and decide upon ethical considerations. Efforts to create tools and guidelines to help people working with AI development have been concentrating almost solely on the technical aspects of AI. A few exceptions do apply, such as the ECCOIA method for creating ethic…
Rate-Splitting Random Access Mechanism for Massive Machine Type Communications in 5G Cellular Internet-of-Things
2021
The cellular Internet-of-Things has resulted in the deployment of millions of machine-type communication (MTC) devices. These massive number of devices must communicate with a single gNodeB (gNB) via the random access channel (RACH) mechanism. However, existing RACH mechanisms are inefficient when dealing with such large number of devices. To address this issue, we propose the rate-splitting random access (RSRA) mechanism, which uses rate splitting and decoding in rate-splitting multiple access (RSMA) to improve RACH success rates. The proposed mechanism divides the message into common and private messages and enhances the decoding performance. We demonstrate, using extensive simulations, t…
Assessing Cloud Infrastructure Costs in Communications-Intensive Applications
2012
By deploying cloud infrastructure services, companies strive at achieving faster time to market, improved scalability, lower up-front costs, and lower IT management overhead, among other benefits. However, in longer term, the use of cloud infrastructure may incur significant costs; furthermore, these costs depend both on the required infrastructure resources and on the mode of infrastructure deployment. Therefore, the choice of a particular deployment mode should be justified with a systematic analysis of the associated costs. In this paper, a model for assessing the costs of alternative cloud infrastructure deployment scenarios is introduced. This model decomposes the infrastructure costs …
Video sharing application for educational use: Usability and impacts of participation modes
2014
For the past few years, the use of video lectures in universities has been on the increase. Production of video lectures will bring flexibility that is needed for study and enable the utilization of pedagogical solutions based on new videos. On the other hand, applications for the sharing and use of lecture videos clearly designed for educational requirements are not available. This article introduces an application for the sharing and use of videos. The application was designed and implemented for educational purposes, and it has been in use already for two years. The article examines, with the help of a SUS survey, students' and lecturer's satisfaction with the application and its usabili…
SADmote: A Robust and Cost-Effective Device for Environmental Monitoring
2012
Time to deployment for wireless sensor networks could be reduced by using commercial sensor nodes. However, this may lead to suboptimal flexibility, power consumption and cost of the system. Our pilot deployment for precision agriculture and fruit growing research showed similar conclusions and outlined the design decisions leading to SADmote: a new sensor node for environmental monitoring. It was evaluated both in the lab and field, showing improved energy consumption over commercial solutions such as Tmote Sky and Waspmote.
A Review of Key Performance Indicators for Building Flexibility Quantification to Support the Clean Energy Transition
2021
The transition to a sustainable society and a carbon-neutral economy by 2050 requires extensive deployment of renewable energy sources that, due to the aleatority and non-programmability of most of them, may seriously affect the stability of existing power grids. In this context, buildings are increasingly being seen as a potential source of energy flexibility for the power grid. In literature, key performance indicators, allowing different aspects of the load management, are used to investigate buildings’ energy flexibility. The paper reviews existing indicators developed in the context of theoretical, experimental and numerical studies on flexible buildings, outlining the current status a…
Solar Thermoelectric Power Landscapes in Spain
2015
Solar thermoelectric energy has developed in spectacular fashion over the last decade in Spain. The appearance of solar power stations using this technology is changing the landscape in many rural areas, as windfarms and photo-voltaic power stations have done since the end of the 1990s. We begin by presenting the different factors and processes that have facilitated the rapid deployment of this technology. We then go on to make a conceptualization of solar thermoelectric landscapes, by analysing the different kinds of landscape created by these technologies, and we present a map of these new landscapes in Spain. After that, we highlight the tensions and conflicts identified in the different…
Warfare dendrochronology: Trees witness the deployment of the German battleship Tirpitz in Norway
2019
Abstract War has an immediate and obvious effect on people and communities, but its impacts on local ecology can be more subtle. This paper shows how one military encounter in the Second World War has left a clear legacy in the northern forests of Norway, trackable more than seventy years later. We used annual growth rings of ∼180 pine and ∼30 birch trees as witnesses of the deployment of the German battleship Tirpitz at the Kafjord. The Tirpitz was the target of several Allied air attacks, but the Kriegsmarine (German navy from 1935 to 1945) used artificial smoke, consisting of chlorosulfonic acid and zinc/hexachloroethane, to hide the ship. These smoke-screen actions throughout 1944 cause…
Agder Living Lab: From Ideas to Large-Scale Deployment and Long-Term User Adoption of Inclusive Health Solutions
2016
End-user involvement is a central part in the strategy of public and private organisations to generate user-driven innovative solutions to real-world problems. The Living lab concept is an instrument to create user-centered solutions, with almost 400 recognized in the European Network of Living Labs (ENoLL) since 2006. Living labs cover diverse topics, such as smart-cities, innovative learning and digital health. A national initiative in Southern Norway has funded the Agder Living Lab (ALL) for eHealth, a user-centered innovation environment participated by multisectorial public and private partners. ALL implements a quadruple-helix model represented by citizens, industry, academia and gove…