支持多种产品的移动学习管理系统

本文介绍的Porta-bile项目正在特伦托大学(University of Trento)开展,旨在研究移动计算技术在教育环境中对学习过程的支持作用.这个项目主要关注移动学习中的技术因素,它们与e-Learning系统的整合以及与学术机构的信息系统的整合.这个项目是建立在特伦托大学经济学院使用的e-learning学习平台的大量源代码研究以及对整个特伦托大学使用的新平台所收集的大量经验和数据基础上.     

Gradual refinement for application-specific MPSoC design from Simulink model to RTL implementation

The application-specific multiprocessor system-on-chip （MPSoC） architecture is becoming an attractive solution to deal with increasingly complex embedded applications, which require both high performance and flexible programmability. As an effective method for MPSoC development, we present a gradual refinement flow starting from a high-level Simulink model to a synthesizable and executable hardware and software specification. The proposed methodology consists of five different abstract levels： Simulink combined algorithm and architecture model （CAAM）, virtual architecture （VA）, transactional accurate architecture （TA）, virtual prototype （VP） and field-programmable gate array （FPGA） emulation. Experimental results of Motion-JPEG and H.264 show that the proposed gradual refinement flow can generate various MPSoC architectures from an original Simulink model, allowing processor, communication and tasks design space exploration.     

Metrological definition and evaluation of some mechanical properties of post-medieval Neapolitan yellow tuff masonry

The knowledge of the morphological and mechanical properties of masonry walls is very important for the refurbishment of ancient buildings, particularly when the requirements of both structural safety and historical preservation must be fulfilled. The masonry is not of homogenous material: its mechanical properties depend on stones, mortar, and texture which are very variable due to their dependence on the historical periods and the geographical area of the erection. For this reason, a deep knowledge of masonries built in different sites and historical periods is essential in order to evaluate both the capacities of bearing vertical load and the seismic vulnerability of the masonry structure. Three fundamental typologies of tuff masonry have been defined: they are the characteristics of different historical periods from the XVI to the XX century. The models are in full-scale in order to reproduce the three defined chronotypes. Original tuff stones quarried in the corresponding historical period, mortars similar to the original ones, reproduced according to ancient documents and original constructive techniques have been used for the construction of the specimens. Compression tests performed in displacement control have been carried out on the masonry models in order to determine the maximum resistance of the material and the corresponding strain, the ultimate strain and corresponding residual strength. In this paper, the procedure used for making the specimens and for experimentally evaluating the mechanical properties of post-medieval Neapolitan yellow tuff masonry are illustrated and the obtained results, even in terms of plastic capacity of these kinds of masonry, are reported.     

Addressing territorial digital divides through ICT strategies: Are investment decisions consistent with local needs?

Governments around the world are investing a great amount of resources on the development of an information society. These investments are particularly important as an attempt to close digital divides among countries and regions within countries. However, there is no clear evidence that suggests that current Information and Communication Technology (ICT) policies are helping align investments with the actual needs of the local contexts. Based on data about the allocation of 2014–2020 EU Funds, this paper analyzes the relationship between local needs and investment decisions aiming at bridging territorial digital divides. The results identify four different regional strategies developed around four policy goals: broadband, digital inclusion, digital government services, and the use of ICTs in enterprises. The results also show that unlike the past 2007–13 period, the allocations to these goals appear to be consistent with the ICT local context, i.e. funding for a given goal is higher in the regions that need it the most. Therefore, our main recommendation for the European Commission and Member States is to keep existing requirements for developing evidence-informed “Digital Growth” strategies for the next 2021–27 period. We also suggest to strengthen existing support tools for regional governments.     

Who cares for me? Grandparents, nannies and babysitters caring for children in contemporary Italy

This paper illustrates the factors and features of the revival of paid care and domestic work in Italy. While Italy is experiencing a boom in the recourse to carers for the elderly, there is not a corresponding expansion in paid private childcare, in spite of growing female employment and limited public services for children. One of the reasons for this is the growing involvement of grandparents in childcare. In Italy, a country characterised by a “Mediterranean welfare regime”, people also have recourse to their own mothers (and fathers) to care for their children, in spite of the fact that they can afford to pay for childminding and babysitting. Thus it is not only (migrant) domestic workers who frequently rely on their parents to care for their own children, an issue widely discussed in the literature on global care chains. Their employers, too, may rely on them. Grandparents, however, have turned out to play an important role in childcare not only in Italy but also in Western countries with better childcare services. Focusing on these issues, the paper contributes both to the debate on global care chains and to that on the role of the family within different welfare systems.     

Teaching without the teacher? Building a learning environment through computer simulations

This article analyzes the impact of a computer simulation (business game) on the users’ perceived learning. The theoretical model developed in this paper is derived from collaborative learning and human–computer interaction assumptions. The hypotheses relating to group dynamics and the user–computer interface design with the users’ perceived learning are tested using the business game “FirmReality” on a sample of 173 respondents. Multiple regression and qualitative results show that, in a computer-based simulation context, perceived learning is influenced more by human–computer interaction factors than by group dynamics. Furthermore, results point out a negative effect of interaction with the instructor on individual perceived learning. These results support the possibility to automate the interaction between teacher and students.