IV. Hymenoptera

Mutation testing has been widely used to assess the fault-detection effectiveness of a test suite, as well as to guide test case generation or prioritization. Empirical studies have shown that, while mutants are generally representative of real faults, an effective application of mutation testing requires "traditional" operators designed for programming languages to be augmented with operators specific to an application domain and/or technology. This paper proposes MDroid+, a framework for effective mutation testing of Android apps. First, we systematically devise a taxonomy of 262 types of Android faults grouped in 14 categories by manually analyzing 2,023 software artifacts from different sources (e.g., bug reports, commits). Then, we identified a set of 38 mutation operators, and implemented an infrastructure to automatically seed mutations in Android apps with 35 of the identified operators. The taxonomy and the proposed operators have been evaluated in terms of stillborn/trivial mutants generated and their capacity to represent real faults in Android apps, as compared to other well know mutation tools.Comment: Accepted at 11TH Joint Meeting of the European Software Engineering Conference and the ACM SIGSOFT Symposium on the Foundations of Software Engineering (ESEC/FSE 17

To profit or not to profit: the private higher education sector in Brazil

Brazil has by far the largest higher education system in Latin America, with a sizable share of students enrolled in private-sector institutions. Its recently established and fast-growing for-profit sector is one of the largest worldwide. The for-profit sector already surpasses the public sector in student enrollment, and its role is growing. Public policy has supported for-profit growth, ostensibly for tax revenue reasons, but the federal government has recently launched social initiatives that include tax exemption policies for the for-profit sector in exchange for need-based scholarships. Through exploratory data analysis, this study explores the role, function, and form of the for-profit sector compared with its nonprofit and public counterparts. The findings reveal that the for-profit sector shares some important characteristics with the nonprofit sector but contrasts sharply with the public sector. The study concludes that countries such as Brazil are moving toward public funding for private higher education to meet enrollment targets. These findings may be able to address issues in other countries by considering similar public policies toward private higher education.Fil: Salto, Dante Javier. University At Albany State University Of New York; . Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Humanidades. Universidad Nacional de Córdoba. Instituto de Humanidades; Argentin