Search results for " access"
showing 10 items of 776 documents
Data mining framework for random access failure detection in LTE networks
2014
Sleeping cell problem is a particular type of cell degradation. There are various software and hardware reasons that might cause such kind of cell outage. In this study a cell becomes sleeping because of Random Access Channel (RACH) failure. This kind of network problem can appear due to misconfiguration, excessive load or software/firmware problem at the Base Station (BS). In practice such failure might cause network performance degradation, which is hardly traceable by an operator. In this paper we present a data mining based framework for the detection of problematic cells. In its core is the analysis of event sequences reported by a User Equipment (UE) to a serving BS. The choice of N i…
The influence of dataset size on the performance of cell outage detection approach in LTE-A networks
2015
The configuration and maintenance of constantly evolving mobile cellular networks are getting more and more complex and hence expensive. Self-Organizing Networks (SON) concept is an umbrella term for the set of automated solutions for network operations proposed by 3rd Generation Partnership Project (3GPP) group. Automated cell outage detection is one of the components of SON functionality. In early studies our research group developed data-driven approach for the detection of malfunctioning cells. In this paper we investigate the performance of the proposed solution as a function of the density of active users and the size of observation interval. The evaluation is conducted in Long Term E…
Avoimen tieteen viikko Liègen yliopistossa – Mitä opittiin?
2017
Belgialainen Liègen (ULg) yliopistokirjasto järjesti jo kolmannen kerran Open access -aiheisen Erasmus-viikon korkeakouluhenkilöstölle. Ohjelma oli rakennettu niin Liègen yliopiston kirjaston asiantuntijoiden kuin osallistujien esityksistä.Esitysten aiheina oli mm. avoin julkiseminen, tekijänoikeudet, aineistonhallinta, avoimen tieteen työkalut ja palvelut. Mitä viikosta jäi käteen suomalaisille osallistujille?
Assessing travel time-based accessibility to outdoor ice skating fields for children in Helsinki during the COVID-19 pandemic
2022
This paper was written within the research project called “Equality in suburban physical activity environments, YLLI” (in Finnish: Yhdenvertainen liikunnallinen lähiö, YLLI) funded by the Suburban Programme 2020–2022 (in Finnish: Lähiöohjelma 2020–2022, decision number VN/10837/2020). Informal sport is central to Finnish children’s leisure and physical activity time. This paper aims to build a better understanding of the travel time-based accessibility to informal sports facilities, specifically to ice skating fields, for children and adolescents (aged 7–19) in the city of Helsinki. We focused on the winter of 2020–2021 because COVID-19 restrictions on indoor activities resulted in ice skat…
Veinte años de publicación electrónica y de acceso abierto : la madurez de una pionera
2014
Resumen basado en el de la publicación Título, resumen y palabras clave también en inglés Disponible versión en inglés RELIEVE alcanza los 20 años, lo que supone un hito en la edición electrónica y en el acceso abierto a la investigación educativa. Se revisan algunos de los logros conseguidos y las perspectivas de futuro, a la vez que se analizan algunas circunstancias de los procesos de evaluación de revistas. ESP
E-Sports y brecha de género: la percepción de las profesionales españolas
2019
The present paper aims to identify the causes of under-representation of women in E-sports. According to a genre perspective, interest in videogames at the amateur level is quite similar. However, in its professional level, female participation becomes very limited. The fact that physical effort is irrelevant (a requirement for ?traditional sports?) could be considered a variable that would negatively affect greater to equality in the conditions of access and participation of women in electronic sports. Against any predictions, the data on the presence of women are elocuent: few women, with much lower wages than men to remunerate same skills, and a general complaint by the female profession…
External Assessors as “Reviewers” for Quality Assurance of Open Access Journals
2017
Garanzie della trasparenza amministrativa e tutela dei privati
2015
L'articolo affronta il problema dell'ampliamento del diritto di accesso ai documenti amministrativi, in funzione di una maggiore trasparenza amministrativa, e della necessaria tutela della riservatezza dei privati
L’interpretazione del trust e l’obbligo di interpretazione conforme («Reading down»)
2022
The recent decision in Goodrich v AB highlights a number of problems which this essay centres upon in an eort to outline a more modern and CEDU oriented version of the law of trust. In particular, the focus will be on the applicable criteria in this branch of the law to the interpretation of settlements aimed at conferring benets on one or more persons, to be identied through a correct analysis of their objective, legal status in relation to the settlor's intention. It will also be devoted to the determination of whether or not duties of disclosure of relevant documents relating to his/her activity may be said to be incumbent, and in the event to what extent, on the trustee. All these issue…
La Géométrie pour l'Unicité, la Parcimonie et l'Appariement des Estimateurs Pénalisés
2022
During the talk we will give a necessary and sufficient condition for the uniqueness of a penalized least squares estimator whose penalty term is a polyhedral norm. Our results cover many methods including the OSCAR, SLOPE and LASSO estimators as well as the related method of basis pursuit. The geometrical condition for uniqueness involves how the row span of the design matrix intersects the faces of the dual normunit ball. Theoretical results on sparsity by LASSO and basis pursuit estimators are deduced from this condition via the characterization of accessible sign vectors for these two methods.