@proceedings {1909,
	title = {How Does Contributors{\textquoteright} Involvement Influence the Build Status of an Open-Source Software Project?},
	year = {2017},
	note = {We used the data released by TravisTorrent
on 06-Dec-2016 as our main data source.},
	month = {05/2017},
	pages = {475-478},
	abstract = {The recent introduction of the pull-based development
model promoted agile development practices such as
Code Reviews and Continuous Integration (CI). CI, in particular,
is currently a standard development practice in opensource
software (OSS) projects. Although it is well-known that
OSS contributors have different involvements (e.g., while some
developers drive the project, there is a long tail of peripheral
developers), little is known about how the contributor{\textquoteright}s degree
of participation can influence the build status of an OSS project.
Through TravisTorrent{\textquoteright}s dataset, we compare the success rates
of builds made by casual and non-casual contributors and what
factors on their contributions may influence the build result. Our
results suggest that there is no representative difference between
their build success (they are similar in 85\% of the analyzed
projects), meaning that being a casual contributor is not a strong
indicator for creating failing builds. Also, factors like the size
of their contributions and the number of project configurations
(jobs) have the potential of impacting the build success.},
	keywords = {travis torrent},
	author = {Reboucas, Marcel and Santos, Renato O. and Pinto, Gustavo and Fernando Castor}
}
@proceedings {1751,
	title = {Mining Energy-Aware Commits},
	year = {2015},
	month = {05/2015},
	abstract = {Over the last years, energy consumption has become
a first-class citizen in software development practice. While
energy-efficient solutions on lower-level layers of the software
stack are well-established, there is convincing evidence that even
better results can be achieved by encouraging practitioners to
participate in the process. For instance, previous work has shown
that using a newer version of a concurrent data structure can
yield a 2.19x energy savings when compared to the old associative
implementation [75]. Nonetheless, little is known about how much
software engineers are employing energy-efficient solutions in
their applications and what solutions they employ for improving
energy-efficiency. In this paper we present a qualitative study
of {\textquotedblleft}energy-aware commits{\textquotedblright}. Using Github as our primary data
source, we perform a thorough analysis on an initial sample of
2,189 commits and carefully curate a set of 371 energy-aware
commits spread over 317 real-world non-trivial applications.
Our study reveals that software developers heavily rely on lowlevel
energy management approaches, such as frequency scaling
and multiple levels of idleness. Also, our findings suggest that
ill-chosen energy saving techniques can impact the correctness
of an application. Yet, we found what we call {\textquotedblleft}energy-aware
interfaces{\textquotedblright}, which are means for clients (e.g., developers or endusers)
to save energy in their applications just by using a function,
abstracting away the low-level implementation details.},
	url = {http://gustavopinto.org/lost+found/msr2015.pdf},
	attachments = {https://flosshub.org/sites/flosshub.org/files/energy.pdf},
	author = {Irineu Moura and Pinto, Gustavo and Felipe Ebert and Fernando Castor}
}
@inbook {1619,
	title = {The Census of the Brazilian Open-Source Community},
	booktitle = {Open Source Software: Mobile Open Source Technologies},
	series = {IFIP Advances in Information and Communication Technology},
	volume = {427},
	year = {2014},
	pages = {202-211},
	publisher = {Springer Berlin Heidelberg},
	organization = {Springer Berlin Heidelberg},
	abstract = {

During a long time, software engineering research has been trying to better understand open-source communities and uncover two fundamental questions: (i) who are the contributors and (i) why they contribute. Most of these researches focus on well-known OSS projects, but little is known about the OSS movement in emerging countries. In this paper, we attempt to fill this gap by presenting a picture of the Brazilian open-source contributor. To achieve this goal, we examined activities from more than 12,400 programmers on Github, during the period of a year. Subsequently, we correlate our findings with a survey that was answered by more than 1,000 active contributors. Our results show that exists an OSS trend in Brazil: most part of the contributors are active, performing around 30 contributions per year, and they contribute to OSS basically by altruism.
},
	keywords = {Brazilian OSS Community, github, OSS},
	isbn = {978-3-642-55127-7},
	doi = {10.1007/978-3-642-55128-4_30},
	url = {http://dx.doi.org/10.1007/978-3-642-55128-4_30},
	author = {Pinto, Gustavo and Kamei, Fernando},
	editor = {Corral, Luis and Sillitti, Alberto and Succi, Giancarlo and Vlasenko, Jelena and Wasserman, AnthonyI.}
}
