Leandro Marques do Nascimento

The Emerging Web of Social Machines

We define a notion of social machine and envisage an algebra that can describe networks of such. To start with, social machines are defined as tuples of input, output, processes, constraints, state, requests and responses, apart from defining the machines themselves, we define their connectors and conditionals that can be used to describe the interactions between any number of machines in a multitude of ways, as a means to represent real machines interacting in the real web, such as Twitter, Twitter running on top of Amazon AWS, mashups built using Twitter and, obviously, other social machines. This work is not a theoretical paper as yet, but, in more than one sense, we think we have found a way to describe web based information systems and are starting to work on what could be a practical way of dealing with the complexity of this emerging web of social machines that is all around us.

Designing Domain-Specific Software Architecture (DSSA): Towards a New Approach

Since the first works involving software reuse, domain engineering is considered a key process to develop reusable and flexible software. However, the results have shown that there is still much to do before the vision of domain engineering is completely achieved. Among the reasons for this problem, we may highlight the lack of a process to support the design of domain-specific software architectures. This paper presents such an approach, based on a well defined set of principles, guidelines and metrics.

The dynamic aspects of product derivation in DSPL: A systematic literature review

Dynamic Software Product Lines (DSPL) have gained significant attention in academic community by involving aspects of product lines and runtime adaptable systems development. Managing dynamic variations demands is a challenge addressed by DSPL paradigm. In this context, this paper introduces the results of a systematic literature review that involved 2,084 studies, with the objective of understanding how the dynamic derivation in DSPL is made. The contributions of this study are: a) an embracing analysis and classification of scientific literature in DSPL area, b) the definition of inputs that are needed to perform the dynamic derivation, c) the description of what composes these inputs, and d) the understanding of the process to perform the dynamic derivation. We conclude that due to the lack of maturity in the dynamic derivation field, there are many open research opportunities still available.