Search results for "507"
showing 10 items of 575 documents
Climate change reshuffles northern species within their niches
2022
Climate change is a pervasive threat to biodiversity. While range shifts are a known consequence of climate warming contributing to regional community change, less is known about how species' positions shift within their climatic niches. Furthermore, whether the relative importance of different climatic variables prompting such shifts varies with changing climate remains unclear. Here we analysed four decades of data for 1,478 species of birds, mammals, butterflies, moths, plants and phytoplankton along a 1,200 km high latitudinal gradient. The relative importance of climatic drivers varied non-uniformly with progressing climate change. While species turnover among decades was limited, the …
Cluster development and regional industrial restructuring: agency and asset modification
2021
The paper presents a novel theoretical framework to analyse the emergence and growth of industrial clusters. The framework focuses on the role of change agency for the modification of assets that i...
Social Space for Self-Organising: An Exploratory Study of Timebanks in Finland and in the UK
2018
The article examines the challenges to self-organisation and upscaling of alternative economies from the viewpoint of defending and negotiating social space. Timebanks in Finland and the UK are presented as examples, analysing the difference of defending such social space in the contexts of a traditional welfare state (in the case of Finland) and an austerity-driven government with a “Big Society” ideology (in the case of UK). Both systems of government present different kinds of pressures on timebanks, pushing them to a given ontological categories and to action in accordance with pre-defined political goals. This difference, along with timebank reactions and the question of prospects of o…
Reestimating a minimum acceptable geocoding hit rate for conducting a spatial analysis
2019
Geocoding consists in converting a textual description of a location into coordinates. Hence, geocoding a dataset of events has to be carried out before performing a spatial analysis of some data. ...
Speech Intelligibility Analysis and Approximation to Room Parameters through the Internet of Things
2021
In recent years, Wireless Acoustic Sensor Networks (WASN) have been widely applied to different acoustic fields in outdoor and indoor environments. Most of these applications are oriented to locate or identify sources and measure specific features of the environment involved. In this paper, we study the application of a WASN for room acoustic measurements. To evaluate the acoustic characteristics, a set of Raspberry Pi 3 (RPi) has been used. One is used to play different acoustic signals and four are used to record at different points in the room simultaneously. The signals are sent wirelessly to a computer connected to a server, where using MATLAB we calculate both the impulse response (IR…
Smart city. Four approaches to the concept of understanding
2020
The paper analyzes the rhetoric of the smart city (SC) concept in order to recognize, categorize, and describe different perspectives of understanding the notion. Four approaches to the SC concept were isolated: three affirmative, and one rejecting. The approaches present a different understanding of the SC and indicate different elements creating urban ‘smartness.’ Despite differences, there is one common goal in every affirmative approach: to improve the quality of urban life. It is achieved through activities covering five dimensions distinguished within affirmative approaches. Together they can serve, i.e.,as a framework for SC case study analyses.
From fractal urban pattern analysis to fractal urban planning concepts
2014
International audience; Fractal geometry can be used to develop a multiscale approach toinvestigate the spatial organization of urban fabrics. First, the concepts behindfractal reference models are introduced so as to provide a better understandingof the results obtained from empirical analyses of urban patterns. Then, differentmethods for conducting fractal analyses are presented and the results obtained forurban patterns are discussed. It turns out that, despite their irregular appearance,urban patterns are often organized by an inherent fractal order principle, at leastacross a certain range of scales. More detailed analysis of the findings reveals linksbetween these fractal properties a…
A Parallel Approach to HRTF Approximation and Interpolation Based on a Parametric Filter Model
2017
[EN] Spatial audio-rendering techniques using head-related transfer functions (HRTFs) are currently used in many different contexts such as immersive teleconferencing systems, gaming, or 3-D audio reproduction. Since all these applications usually involve real-time constraints, efficient processing structures for HRTF modeling and interpolation are necessary for providing real-time binaural audio solutions. This letter presents a parametric parallel model that allows us to perform HRTF filtering and interpolation efficiently from an input HRTF dataset. The resulting model, which is an adaptation from a recently proposed modeling technique, not only reduces the size of HRTF datasets signific…
Performing transnational family with the affordances of mobile apps : a case study of Polish mothers living in Finland
2020
Affordances provided by digital technologies and mobile apps (WhatsApp, Skype, Messenger) help in maintaining familyhood. These mobile apps enable the creation of in-app family groups. They also afford image sharing, which is used for phatic purposes. Digital connectivity provides the illusions of togetherness and belonging, and allows for performing family in a transnational context (emotional transnationalism). However, it also generates the feelings of guilt through infrequent communication. In the auto-driven visual elicitation interviews, the study looks at family constellations and technologically mediated communication from the perspective of five Polish mothers living in Finland. Ap…
Colegialidad docente: validación lógica del instrumento para autoevaluación docente en España y México
2018
Se describe el proceso de diseño y validación del instrumento de evaluación de la colegialidad docente en su fase de validación lógica (validación de constructo) mediante el juicio de expertos a través de una metodología mixta (cuantitativa y cualitativa). El instrumento, que forma parte del modelo de evaluación para la cohesión social (Jornet, 2012), ha sido diseñado y validado en España, y posteriormente se llevó a cabo el proceso de adaptación en México. Los resultados muestran diferencias significativas entre las valoraciones de expertos de ambos contextos y ponen de manifiesto divergencias en cuanto a la organización de los sistemas educativos, lo que ayuda a definir el instrumento par…