October 23, 2020

IEEE ICNP 2020 met on October 13 to 16. For the first time in its 28-year history, the conference was...

On October 13 through 16, IMDEA Networks Institute will host IEEE ICNP 2020, the 28th annual edition of the IEEE...

July 8, 2020

The project called CoronaSurveys was created to “Measure the Iceberg” and was based on the idea that the iceberg has...

May 29, 2020

Antonio Fernández Anta has participated in one of the “MBA Talks” of the Canarian academic center MBA Business School: “Big Data...

April 24, 2020

With COVID-19 hitting all areas of our lives, there is a need both socially and politically to know what the...

April 2, 2020

In order to properly manage the Covid-19 pandemic, governments and the scientists who advise them need the most accurate data...

Despite the hype about blockchains and distributed ledgers, no formal abstraction of these objects has been proposed. To face this issue, in this paper we provide a proper formulation of a distributed ledger object. In brief, we define a ledger object as a sequence of records, and we provide the operations and the properties that such an object should support. 

We consider online task computing environments such as volunteer computing platforms running on BOINC (e.g., SETI@home) and crowdsourcing platforms such as Amazon’s Mechanical Turk. We model the computations as an Internet-based task computing system under the master-worker paradigm. A master entity sends tasks across the Internet, to worker entities willing to perform a computational task. 

Everyone is familiar with the problem of online scheduling, even if they are not aware of it; from the way we prioritize our everyday decisions to the way a delivery service must decide on the route to follow in order to cover the ongoing requests. In computer science this is a problem of even greater importance.

Cellular service providers have been struggling with users’ demand since the emergence of mobile Internet. As a result, each generation of cellular network prevailed over its predecessors mainly in terms of connection speed.