Search results for " computing"

Benefits and drawbacks of communication visibility : from vicarious learning and supplemental work to knowledge reuse and overload

2022

Purpose This study aims to examine some of the benefits and drawbacks of communication visibility. Specifically, building on communication visibility theory, the authors study how and why message transparency and network translucence may increase knowledge reuse and perceived overload through behavioral responses of vicarious learning and technology-assisted supplemental work. Design/methodology/approach Drawing on survey data obtained from 1,127 employees of a global company operating in the industrial machinery sector, the authors used structural equation modeling to test the hypothesized model. Findings The results demonstrate that the two aspects of communication visibility yield somew…

Four essays on IT users' psychological states and behaviors

2016

This dissertation is intended to study information technology (IT) users’ psychological states and behaviors. It consists of four essays. The first essay examines how people react to social networking services (SNS). In this essay, we attempted to extend the existing model, which includes dedication- and constraint-based mechanisms, by additionally including the obligation-based mechanism underlying SNS-related behavior. The second essay is designed to investigate individuals’ smartphone use. In particular, we focused on the role of smartphone addiction in shaping individuals’ perceptions about their smartphone. The third essay is about online community behavior. Drawing on the model of eng…

New Metropolitan Perspectives Transition with Resilience for Evolutionary Development

2023

This open access book conveys attention to the theme of transition towards resilience and sustainability and its evolutionary perspective that emphasizes the complexity and uncertainty that governments and society are called to address in response to the ongoing challenges. "New Metropolitan Perspective Post COVID Dynamics: Green and Digital Transition, between Metropolitan and Return to Villages’ Perspectives”, 25–27 May 2022, Reggio Calabria, Italy. The papers included in the book are grouped around the following main topics: the envisaged transition towards resilience and sustainability; the relevance of the planning dimension for defining sustainable development pathways and managing co…

Simple memetic computing structures for global optimization

2014

Perfect Hashing Structures for Parallel Similarity Searches

2015

International audience; Seed-based heuristics have proved to be efficient for studying similarity between genetic databases with billions of base pairs. This paper focuses on algorithms and data structures for the filtering phase in seed-based heuristics, with an emphasis on efficient parallel GPU/manycores implementa- tion. We propose a 2-stage index structure which is based on neighborhood indexing and perfect hashing techniques. This structure performs a filtering phase over the neighborhood regions around the seeds in constant time and avoid as much as possible random memory accesses and branch divergences. Moreover, it fits particularly well on parallel SIMD processors, because it requ…

Efficiency of temporal sensor data compression methods to reduce LoRa-based sensor node energy consumption

2022

Purpose Minimizing the energy consumption in a wireless sensor node is important for lengthening the lifetime of a battery. Radio transmission is the most energy-consuming task in a wireless sensor node, and by compressing the sensor data in the online mode, it is possible to reduce the number of transmission periods. This study aims to demonstrate that temporal compression methods present an effective method for lengthening the lifetime of a battery-powered wireless sensor node. Design/methodology/approach In this study, the energy consumption of LoRa-based sensor node was evaluated and measured. The experiments were conducted with different LoRaWAN data rate parameters, with and without …

Datos personales y Cloud Computing

2016

Póster presentado en el XV Workshop de Rebiun "Datos y Bibliotecas", celebrado en Castellón los días 29 y 30 de septiembre de 2016 Las bibliotecas Universitarias están recurriendo con más frecuencia a soluciones informáticas en la nube para seguir ofreciendo el mejor servicio a sus usuarios y, de paso, aprovecharse del ahorro en costes, escalabilidad y mejoras en la gestión de datos que ello supone. Estos servicios en la nube los suelen ofrecer grandes empresas internacionales que han construido complejas y robustas infraestructuras, muchas veces localizadas fuera del territorio de la UE, para ayudar a las bibliotecas a seleccionar, adquirir, procesar, conservar y difundir sus recursos. Per…

Multi-objective Optimization for Computation Offloading in Fog Computing

2018

Fog computing system is an emergent architecture for providing computing, storage, control, and networking capabilities for realizing Internet of Things. In the fog computing system, the mobile devices (MDs) can offload its data or computational expensive tasks to the fog node within its proximity, instead of distant cloud. Although offloading can reduce energy consumption at the MDs, it may also incur a larger execution delay including transmission time between the MDs and the fog/cloud servers, and waiting and execution time at the servers. Therefore, how to balance the energy consumption and delay performance is of research importance. Moreover, based on the energy consumption and delay,…

Socially-aware Dynamic Computation Offloading Scheme for Fog Computing System with Energy Harvesting Devices

2018

Fog computing is considered as a promising technology to meet the ever-increasing computation requests from a wide variety of mobile applications. By offloading the computation-intensive requests to the fog node or the central cloud, the performance of the applications, such as energy consumption and delay, are able to be significantly enhanced. Meanwhile, utilizing the recent advances of social network and energy harvesting (EH) techniques, the system performance could be further improved. In this paper, we take the social relationships of the EH mobile devices (MDs) into the design of computational offloading scheme in fog computing. With the objective to minimize the social group executi…

Pilvipalveluiden käyttö

2017

Tämä tutkielma perehtyy pilvipalveluihin, niiden käyttäjäryhmiin sekä syihin, miksi pilvipalveluita käytetään. Pilvipalvelut ovat internetin yli tarjottavia laitteita ja ohjelmistoja, joihin on samanaikainen pääsy eri puolilta maailmaa. Kaikilla on mahdollisuus hyödyntää pilvipalveluiden tuomia etuja niin teknisesti kuin taloudellisestikin. Mobiililaitteiden ja langattoman nettiyhteyden lisääntyvän suosion sekä koko ajan kasvavan datamäärän myötä myös pilvipalveluiden käyttö on laajentunut viime vuosina paljon. Pilvipalvelut tuovat paljon hyötyjä, jotka houkuttelevat lisää käyttäjiä. Toisaalta pilvipalveluiden varjopuolena on turvallisuus, joka mietityttää monia käyttäjiä. The usage of clou…