201,203 research outputs found
Proceedings Editorial 16th International Conference on Evaluation & Assessment in Software Engineering, EASE 2012
No full textAn overview of research on gender in Spanish society
No full textThis article presents an overview of research on gender in Spanish society. Six areas of literature are examined including families, education, work, politics, sexuality, and men. The author argues that political factors have shaped the development of sociology of gender in Spain and that there are still important gaps in coverage in this area of sociological inquiry.Publicad
Building measure-based prediction models for UML class diagram maintainability
No full textThe usefulness of measures for the analysis and design of object oriented (OO) software is increasingly being recognized in the field of software engineering research. In particular, recognition of the need for early indicators of external quality attributes is increasing. We investigate through experimentation whether a collection of UML class diagram measures could be good predictors of two main subcharacteristics of the maintainability of class diagrams: understandability and modifiability. Results obtained from a controlled experiment and a replica support the idea that useful prediction models for class diagrams understandability and modifiability can be built on the basis of early measures, in particular, measures that capture structural complexity through associations and generalizations. Moreover, these measures seem to be correlated with the subjective perception of the subjects about the complexity of the diagrams. This fact shows, to some extent, that the objective measures capture the same aspects as the subjective ones. However, despite our encouraging findings, further empirical studies, especially using data taken from real projects performed in industrial settings, are needed. Such further study will yield a comprehensive body of knowledge and experience about building prediction models for understandability and modifiability
Assessing the Understandability of UML Statechart Diagrams with Composite States in an Industrial Environment
No full textWe have carried out a family of empirical studies to investigate whether the use of composite states improves the understandability of UML statechart diagrams. Our hypothesis derived from conventional wisdom, which says that hierarchical modeling mechanisms are helpful to master a system’s complexity. We carried out three studies that have gradually evolved in the size of the UML statecharts models, the type of subjects (students vs. professionals), the familiarity of the subjects with the domains of the diagrams, and other factors. In this work we briefly review the first and second studies and present the third one, performed with practitioners as experimental subjects. Surprisingly, our results do not seem to show that the use of composite states improves the understandability of UML statechart diagrams
WITNESSES AND SURVIVORS, THE (RE) INVENTION OF IDENTITIES. WIDOWHOOD, TYPE AND THE STATE OF EXCEPTION IN LATIN AMERICA
No full textUNESP, Hist Relacoes Genero & Feminismos Amer Latina, Dept Ciencias Polit & Econ, Marilia, SP, BrazilUNESP, LIEG, Marilia, SP, BrazilUNESP, Hist Relacoes Genero & Feminismos Amer Latina, Dept Ciencias Polit & Econ, Marilia, SP, BrazilUNESP, LIEG, Marilia, SP, Brazi
UML diagram synthesis techniques: A systematic mapping study
No full textContext: UML software development relies on different types of UML diagrams, which must be consistent with one another. UML Synthesis techniques suggest to generate diagram(s) from other diagram(s), thereby implicitly suggesting that input and output diagrams of the synthesis process be consistent with one another. Objective: Our aim is to provide a comprehensive summary of UML synthesis techniques as they have been described in the literature to date to then collect UML consistency rules, which can then be used to verify UML models. Method: We performed a Systematic Mapping Study by following well-known guidelines. We selected 14 studies by means of a search with seven search engines executed until January, 2018. Results: Researchers have not frequently published papers concerning UML synthesis techniques since 2004. We present a set of 47 UML consistency rules collected from the different synthesis techniques analyzed. Conclusion: Although UML diagrams synthesis doesn't seem to be an active line of research, it is relevant since synthesis techniques rely on enforcing diagram consistency, which is an active line of research. We collected consistency rules which can be used to check UML models, specifically to verify if the diagrams of a model are consistent with one another
Estudio genético y bioquímico de cuatro especies del genero Brycon de origen Colombiano
No full textResumen: Colombia posee una gran riqueza de especies nativas de peces, siendo quizás una de las más difundidas por todo el territorio nacional las pertenecientes al genero Brycon las que poseen variadas características morfológicas intrapoblacionales e intraindividuales que parecen depender de diferentes factores tales como la condición de su hábitat natural, el aislamiento de los grupos poblacionales o a las hibridaciones producidas por modificaciones geológicas tales como las coaliciones ocasionales de quebradas con arroyos o ríos que contienen poblaciones diferentes de peces. Todas las especies del genero Brycon, algunas de ellas conocidas como "sabaletas” poseen una gran adaptabilidad tanto a la temperatura ambienta1, que bien puede fluctuar entre 12°C y 27°C como a la altitud, que puede estar comprendida entre 10 m y 3.200 m sobre el nivel del mar tal como lo describen BuiLes y Lar
Assessing the understandability of UML statechart diagrams with composite states-A family of empirical studies
No full textThe main goal of this work is to present a family of empirical studies that we have carried out to investigate whether the use of composite states may improve the understandability of UML statechart diagrams derived from class diagrams. Our hypotheses derive from conventional wisdom, which says that hierarchical modeling mechanisms are helpful in mastering the complexity of a software system. In our research, we have carried out three empirical studies, consisting of five experiments in total. The studies differed somewhat as regards the size of the UML statechart models, though their size and the complexity of the models were chosen so that they could be analyzed by the subjects within a limited time period. The studies also differed with respect to the type of subjects (students vs. professionals), the familiarity of the subjects with the domains of the diagrams, and other factors. To integrate the results obtained from each of the five experiments, we performed a meta-analysis study which allowed us to take into account the differences between studies and to obtain the overall effect that the use of composite states has on the understandability of UML statechart diagrams throughout all the experiments. The results obtained are not completely conclusive. They cast doubts on the usefulness of composite states for a better understanding and memorizing of UML statechart diagrams. Composite states seem only to be helpful for acquiring knowledge from the diagrams. At any rate, it should be noted that these results are affected by the previous experience of the subjects on modeling, as well as by the size and complexity of the UML statechart diagrams we used, so care should be taken when generalizing our results
Does the Level of Detail of UML Diagrams Affect the Maintainability of Source Code?: A Family of Experiments
No full textAlthough the UML is considered to be the de facto standard notation with which to model software, there is still resistance to model-based development. UML modeling is perceived to be expensive and not necessarily cost-effective. It is therefore important to collect empirical evidence concerning the conditions under which the use of UML makes a practical difference. The focus of this paper is to investigate whether and how the Level of Detail (LoD) of UML diagrams impacts on the performance of maintenance tasks. A family of experiments consisting of one controlled experiment and three replications has therefore been carried out with 81 students with different abilities and levels of experience from 3 countries (The Netherlands, Spain, and Italy). The analysis of the results of the experiments indicates that there is no strong statistical evidence as to the influence of different LoDs. The analysis suggests a slight tendency toward better results when using low LoD UML diagrams, especially if used for the modification of the source code, while a high LoD would appear to be helpful in understanding the system. The participants in our study also favored low LoD diagrams because they were perceived as easier to read. Although the participants expressed a preference for low LoD diagrams, no statistically significant conclusions can be drawn from the set of experiments. One important finding attained during this family of experiments was that the participants minimized or avoided the use of UML diagrams, regardless of their LoD. This effect was probably the result of using small software systems from well-known domains as experimental materials
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
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