Search results for "IPA"
showing 10 items of 5795 documents
Higher-order Nonnegative CANDECOMP/PARAFAC Tensor Decomposition Using Proximal Algorithm
2019
Tensor decomposition is a powerful tool for analyzing multiway data. Nowadays, with the fast development of multisensor technology, more and more data appear in higherorder (order > 4) and nonnegative form. However, the decomposition of higher-order nonnegative tensor suffers from poor convergence and low speed. In this study, we propose a new nonnegative CANDECOM/PARAFAC (NCP) model using proximal algorithm. The block principal pivoting method in alternating nonnegative least squares (ANLS) framework is employed to minimize the objective function. Our method can guarantee the convergence and accelerate the computation. The results of experiments on both synthetic and real data demonstrate …
Comparing Conservation Value Maps and Mapping Methods in a Rural Landscape in Southern Finland
2015
We tested to what extent conservation value maps are different if the valuation and mapping method is changed. We compared 66 different conservation value and 4 different ecosystem service maps. Using remote sensing and other georeferenced data, we produced 2 different habitat type maps, which were 50 % similar. We valued each mapped habitat type based on rarity corrected potential number of vascular plant species and naturalness using 6 different valuation alternatives. We mapped habitat type connectivity and complementarity using 2 main approaches. The habitat type valuation alternatives were quite similar, but if the habitat type naturalness was taken into account, differences were large…
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…
Opportunity Discovery and Creation in Cloud Computing
2013
Cloud computing provides opportunities for firms selling or using cloud services. However, little is known about how entrepreneurs discover or create these opportunities for cloud computing. In this study, we found that the opportunities discovered in cloud computing were related to the development of software for a particular need. By contrast, created opportunities were developed under conditions of technological uncertainty, at a time when the market did not yet exist. It appears that created opportunities, if successful, bring long-term competitive advantages, whereas discovered opportunities are more easily copied and exploited by competitors. peerReviewed
Riconfigurare i territori metroplitani. Forme di urbanizzazione e fenomeni di pressione insediativa sui sistemi di interesse naturale in Sicilia
2018
The consumption of the soil due to urbanization it is a phenomena already for many years under observations, but of which only the scientific environment has noticed the elevated environmental impact progress. From a disciplinary point of view, is possible to identify a line of research focusing on the analysis and identification of new morphologies of urbanization and on the interaction among different settlement patterns coexisting in a specific context. This reading complements with the scientific production about the forms of settlement pressure on environmental systems, producing change and deterioration on natural ecosystems and loss of biodiversity. A necessary reference for this lin…
La comunità tamil di Palermo. Socializzazione politica delle “seconde generazioni”
2023
Il volume presenta i risultati di una ricerca esplorativa sulla socializzazione politica e i processi di costruzione identitaria delle seconde generazioni della comunità tamil di Palermo. Venti interviste biografiche (analizzate con il supporto del software T-LAB) ne ripercorrono le relazioni sociali in ambito familiare, scolastico, religioso, lavorativo, mediatico e associativo; i legami con lo Sri Lanka, con la comunità diasporica e con la città di Palermo. Tra gli intervistati e le intervistate, la lotta per mantenere viva la memoria collettiva e per il riconoscimento internazionale delle atrocità del passato, si intreccia con questioni politiche nuove che riguardano la cittadinanza e i …
Striving for Inclusion through Participatory Practices in Social Enterprises
2019
The aim of this research case is to shed some empirical light on the effects of participatory practices from the perspective of Sen’s capability approach in a Finnish social enterprise. Using a mixed method approach we explore how participatory practices build social inclusion by enabling both company’s employees and customers to engage in social agency. The case study findings articulate the importance of participatory practices to employees’ perceptions of meaningfulness of life and being able to meet customers (who are mentally disabled) needs on the one hand and customers’ experience of information sharing and feedback giving to the employees and helping other customers. peerReviewed
Demokratiaan emansipoituminen : kasvatuksen sattuman kauppaa?
2022
Kielikoulutus on nähtävä investointina!
2015
Sensitivity of bipartite network analyses to incomplete sampling and taxonomic uncertainty
2023
Bipartite network analysis is a powerful tool to study the processes structuring interactions in ecological communities. In applying the method, it is assumed that the sampled interactions provide an accurate representation of the actual community. However, acquiring a representative sample may be difficult as not all species are equally abundant or easily identifiable. Two potential sampling issues can compromise the conclusions of bipartite network analyses: failure to capture the full range of interactions (sampling completeness) and use of a taxonomic level higher than species to evaluate the network (taxonomic resolution). We asked how commonly used descriptors of bipartite antagonisti…