Search results for " online"
showing 10 items of 210 documents
Moderate ovarian stimulation does not increase the incidence of human embryo chromosomal abnormalities in in vitro fertilization cycles.
2012
A high chromosomal abnormalities rate has been observed in human embryos derived from in vitro fertilization (IVF) treatments. The real incidence in natural cycles has been poorly studied, so whether this frequency may be induced by external factors, such as use of gonadotropins for ovarian stimulation, remains unknown.We conducted a prospective cohort study in a University-affiliated private infertility clinic with a comparison between unstimulated and stimulated ovarian cycles in the same women. Preimplantation genetic screening by fluorescence in situ hybridization was performed in all viable d 3 embryos.The primary objective was to compare the incidence of embryo chromosomal abnormaliti…
The role of the distribution platform in price formation of paid apps
2015
In this paper we study the role of the distribution platform as an important determinant of price of paid apps. We also examine how the distribution platform influences the price implications of important developers' app-level decisions. To these purposes, we construct a hierarchical model of price formation by using an ad-hoc panel dataset consisting of top paid apps from the two major app stores, namely Apple's App Store and Google Play. Our findings show that prices of paid apps strongly depend on the platform where the apps are marketed. Specifically, the App Store is associated with lower prices for paid apps than Google Play. We find evidence that this is because the impact of cross-s…
Online Academic Networks as Knowledge Brokers: The Mediating Role of Organizational Support
2018
Placing online academic networks in the framework of social, cultural and institutional “deterritorialization,” the current paper aims at investigating the functionality of these new forms of transnational and trans-organizational aggregations as knowledge brokers. The emphasis is laid on the influence of human collective intelligence and consistent knowledge flows on research innovation, considering the role of organizational support within higher education systems. In this respect, the research relied on a questionnaire-based survey with 140 academics from European emerging countries, the data collected being processed via a partial least squares structural equation modelling technique. E…
Distributed Coverage of Ego Networks in F2F Online Social Networks
2016
Although most online social networks rely on a centralized infrastructure, several proposals of Distributed Online Social Networks (DOSNs) have been recently presented. Since in DOSNs user profiles are stored on the peers of the users belonging to the network, one of the main challenges comes from guaranteeing the profile availability when the owner of the data is not online. In this paper, we propose a DOSN based on a friend-to-friend P2P overlay where the user's data is stored only on friend peers. Our approach is based on the ego-network concept, which models the social network from the local point of view of a single user. We propose a distributed algorithm which is based on the notion …
Privacy and temporal aware allocation of data in decentralized online social networks
2017
Distributed Online Social Networks (DOSNs) have recently been proposed to grant users more control over the data they share with the other users. Indeed, in contrast to centralized Online Social Networks (such as Facebook), DOSNs are not based on centralized storage services, because the contents shared by the users are stored on the devices of the users themselves. One of the main challenges in a DOSN comes from guaranteeing availability of the users' contents when the data owner disconnects from the network. In this paper, we focus our attention on data availability by proposing a distributed allocation strategy which takes into account both the privacy policies defined on the contents an…
A Survey on Privacy in Decentralized Online Social Networks
2018
Decentralized Online Social Networks (DOSNs) have recently captured the interest of users because of the more control given to them over their shared contents. Indeed, most of the user privacy issues related to the centralized Online Social Network (OSN) services (such as Facebook or Google+) do not apply in the case of DOSNs because of the absence of the centralized service provider. However, these new architectures have motivated researchers to investigate new privacy solutions that allow DOSN’s users to protect their contents by taking into account the decentralized nature of the DOSNs platform. In this survey, we provide a comprehensive overview of the privacy solutions adopted by…
eTwinning Collaborative Learning Environment in Initial Teacher Education
2018
This paper aims to describe the eTwinning Teacher Training Institutes Pilot (TTI)1experiment during academic year 2014/15 with 550 undergraduate students from first and second year of Educational Technologies degree courses. The research was given start with the purpose of preparing tomorrow's teachers for a future where the use of ICT and is in everyday teaching, to promote their digital skills and communication skills, and their use of English as a foreign language within a cross-cultural context. The teaching presence was proved through proper supervision and the emergence of mutual support from 36 tutors and 550 students. The results of the research contributed to our understanding of h…
Efectos en el examen final de la participación del estudiante en cuestionarios online
2016
[EN] This paper looks into the different evolution of students’ online questionnaire performance and its impact on the final examination mark. This innovative technique has been used in a group of an introductory financial accounting course with 8 online questionnaires (one per unit). Using cluster analysis, we identify different groups of performance evolution. The evidence obtained suggests that in one of this groups a favourable test performance evolution may lead to overconfidence with the subsequent negative effect on the final examination mark. Future research with more variables and bigger samples will help identify this student profile with a view to preventing this undesired negati…
Massive Open Online Courses for IFRS Education: A Point of view of Spanish Accounting Educators
2016
Abstract This paper is based on a survey of 103 accounting educators from different universities of Spain on the use of MOOC, especially as regards teaching IFRS. The results show significant differences in three areas of opinion: i) the importance of the use of Internet and some Web tools for academic use; ii) general knowledge and perception of MOOCs; and iii) the opinions regarding the interest of MOOCs on IFRS. The overall opinion of educators is positive because, although the majority has never taught or participated in a MOOC, over 80% consider it useful in the learning process. Flexibility is considered the main advantage of MOOCs as well as its valuable potential for autonomous lear…
Motivational drivers of behavioral online brand engagement in content consumption context : examining brand commitment and trust in online content as…
2015
The Internet has become increasingly important for companies in recent years. However, online environment possesses many challenges for both managers and researchers. Moreover, it is not until recently engagement concept has begun to emerge in the marketing literature. However, it is known that engagement has a strong influence on many favorable customer outcomes. Thus, engagement is a fruitful research topic in online environment. The purpose of this explanatory study is to examine behavioral dimension of online brand engagement in context of content consumption. This study examines the effects of five motivational drivers (community, information, entertainment, identity, and remuneration)…