Search results for "computers"
showing 10 items of 3243 documents
Coupling high-resolution satellite imagery with ALS-based canopy height model and digital elevation model in object-based boreal forest habitat type …
2014
We developed a classification workflow for boreal forest habitat type mapping. In object-based image analysis framework, Fractal Net Evolution Approach segmentation was combined with random forest classification. High-resolution WorldView-2 imagery was coupled with ALS based canopy height model and digital terrain model. We calculated several features (e.g. spectral, textural and topographic) per image object from the used datasets. We tested different feature set alternatives; a classification accuracy of 78.0 % was obtained when all features were used. The highest classification accuracy (79.1 %) was obtained when the amount of features was reduced from the initial 328 to the 100 most imp…
Towards Mitigating the Impact of UAVs on Cellular Communications
2018
The next generation of Unmanned Aerial Vehicles (UAVs) will rely on mobile networks as a communication infrastructure. Several issues need to be addressed to enable the expected potentials from this communication. In particular, it was demonstrated that flying UAVs perceive a high number of base stations (BSs), consequently causing more interferences on non-serving BSs. This unfortunately results in decreased throughput for ground user equipments (UEs) already connected. Such a problem could be a limiting factor for mobile network-enabled UAVs, due to its consequences on the quality of experience (QoE) of served UEs. This underpins the focus of this article, wherein the effect of UAVs' comm…
Performance of an asymmetric and asynchronous decode-and-forward FBMC relay system
2014
End-to-end link performance of an asymmetric and asynchronous dual-hop decode-and-forward (DF) relay system built up using a causal multirate filter bank multicarrier (FBMC) technique operated under Rayleigh fading is presented. Three main performance measures namely bit error rate (BER), outage probability and channel capacity are used for this evaluation and approximate closed-form expressions for them are also made available. FBMC setup is modeled in exact form without any approximations while customizing to one of the most efficient subcarrier filter. Simulations are carried out in quasi-static multipath fading channels under symmetric, asymmetric, synchronous and asynchronous condition…
Choosing a study mode in blended learning
2012
Education providers aim to meet today's education requirements by employing, among other things, education technology solutions that increase flexibility. This has also happened with the master's level mathematical information technology degree directed to adults. In the degree program, lecture videos brought in together with face-to-face teaching provide good opportunities for flexible educational arrangements. Education with the help of videos can be arranged in such a way that students themselves will be able to choose their study mode in accordance with their needs. When students themselves can choose their study modes, many different ways to take advantage of the flexibility provided a…
Distributed leadership in practice in Finnish schools
2017
ABSTRACTThe aim of this study is to explore what aspects the principals and the members of the management teams in the primary and upper secondary education schools in Vantaa support distributed leadership in their school and how necessary they see that distributed leadership is extended to the students in matters concerning the curriculum and the development of teaching practices. The research method was a survey based on a questionnaire of 48 questions, where the respondents evaluated the preconditions of distributed leadership in their school. The principals and members of the management teams in the primary and upper secondary schools in Vantaa see distributed leadership mostly as deleg…
Checkpoint Leonardo – combining informal science and art education to primary and science teacher education
2014
Both artists and scientists want to make the invisible world visible. Checkpoint Leonardo (CPL) is a project for teaching and learning the art and science ways to gain knowledge of the world in informal museum and school education simultaneously. It consists of a series of art exhibitions with tailored workshops based on the scientific and artistic perspectives of the exhibit artworks. The first four workshops were designed and instructed for the conceptual level of 6th grade pupils by interdisciplinary groups of physics student teachers and elementary school student teachers. These workshops studied different ways of perceiving (related to cubism), infrared imaging, oxidation as a source o…
Design of mobile phones for older adults : An empirical analysis of design guidelines and checklists for feature phones and smartphones
2017
Design guidelines and checklists are suggested as a useful tool in the development and evaluation of interface design of mobile phones for older adults. Given the intense evolution of mobile phone design, understanding how the design guidelines and checklists have taken into account the advances in mobile phone usability for older adults is important for their correct application and future development. Thus, this study explores the usability dimensions of mobile phone design for older adults and the related changes in terms of time and the type of device (feature phones vs. smartphones) based on an expert coding of the eight mobile phone design guidelines and checklists for older adults pu…
Literacy instruction in first grade: classroom‐level associations between reading skills and literacy instruction activities
2022
Background Adapting instruction to individual students' needs is known to be effective, but there is a lack of evidence whether students' reading skills are associated with literacy instruction activities at classroom-level. Both the content of the literacy instruction and teachers' instructional support through instructional management are considered. Methods The data were collected in the context of Finland where first graders' reading skills show great variation at school entry but rapid progress. Students (n = 616) were individually tested on their reading skills, and literacy lessons in 35 classrooms were video recorded in the autumn of first grade. Multilevel path analyses were conduc…
Explaining classroom teachers’ attitudes towards inclusive education
2019
Teacher attitudes have been identified as an important resource when striving towards inclusive education as defined in the Salamanca Statement (1994). This study surveyed some key factors associated with teacher attitudes towards inclusion. The participants were 1,456 classroom teachers in Finnish primary schools who were asked about their readiness to include in their classrooms a student with a specified special educational need (SEN). The results were reviewed in association with some background variables, including workload concerns, evaluation of professional skills and the opportunity to get extra support if needed. The results show that classroom teachers’ positive attitudes towards…
Awareness and knowledge of cyberethics: A comparative study of preservice teachers in Malta, Norway, and Spain
2021
This paper explores the awareness and knowledge of cyberethics held by pre-service teachers across three European countries. The study was conducted via an online survey and yielded 1,131 responses from pre-service teachers in Malta, Norway, and Spain. The facets of cyberethics included in this study focused on behaving responsibly online, safeguarding privacy, respecting copyright, seeking consent of friends before posting images or videos on social media platforms, and considering their professional identity as future teachers when posting online. The findings indicate that pre-service teachers reported relatively similar levels of competence in applying copyright and respecting privacy r…