Temporary labor migration in developing countries is an important urban ^ rural linkage that has a potential impact on rural development. According to the new economies of labor migration, it is often a strategy used by families with small farms to acquire investment capital for future business formation. In this paper, I argue further that human-capital accretion during migration reinforces th...

Reciprocity is fundamental to cooperative behaviour and has been verified in theoretical models. However, there is still limited experimental evidence for reciprocity in non-primate species. Our results more decisively clarify that reciprocity with a tit-for-tat enforcement strategy can occur among breeding pied flycatchers Ficedula hypoleuca separate from considerations of byproduct mutualism....

Some tasks supported by educative and collaborative tools can be more realistic and accessible if they are tackled using mobile devices. This approach allows students to benefit from the mobility features of this kind of devices, which are expected to revolutionize teaching in the next decade. In this paper we present an application called DomoSim-Mob to carry out practical activities of domoti...

We present a service-oriented scripting language for programming mobile agents in distributed systems. The main novelty of the language we call Mob, is the integration of the service-oriented and mobile agent paradigms. Mob is also encoded onto a process calculus with a well studied semantics. The encoding provides a specification for the front-end of the language compiler and allows us to use,...

We read the latest paper from Torkildsen et al. with great interest and agree with the authors that their data provide a convincing empirical demonstration of the extent to which failing to correct for year and place of birth can generate false-positive associations in studies considering the role of month of birth (MOB) in multiple sclerosis. However, regarding their suggestion that these data...