Automating the Assessment of the Performance Quality Attribute for Evolving Software Systems: An Exploratory Study

Author(s):  
Felipe Pinto ◽  
Uira Kulesza ◽  
Leo Silva ◽  
Eduardo Guerra
Author(s):  
Weiyi Shang ◽  
Zhen Ming Jiang ◽  
Bram Adams ◽  
Ahmed E. Hassan ◽  
Michael W. Godfrey ◽  
...  

Author(s):  
Bruno Cardoso ◽  
Eduardo Figueiredo

A design pattern is a general reusable solution to a recurring problem in software design. Bad smells are symptoms that may indicate something wrong in the system design or code. Therefore, design patterns and bad smells represent antagonistic structures. They are subject of recurring research and typically appear in software systems. Although design patterns represent good design, their use is often inadequate because their implementation is not always trivial or they may be unnecessarily employed. The inadequate use of design patterns may lead to a bad smell. Therefore, this paper performs an exploratory study in order to identify instances of co-occurrences of design patterns and bad smells. This study is performed over five systems and discovers some co-occurrences between design patterns and bad smells. For instance, we observed the co-occurrences of Command with God Class and Template Method with Duplicated Code. The results of this study make it possible to understand in which situations design patterns are misused or overused and establish guidelines for their better use.


Author(s):  
Michael Wahler ◽  
Raphael Eidenbenz ◽  
Aurelien Monot ◽  
Manuel Oriol ◽  
Thanikesavan Sivanthi

2013 ◽  
Vol 26 (1) ◽  
pp. 3-26 ◽  
Author(s):  
Weiyi Shang ◽  
Zhen Ming Jiang ◽  
Bram Adams ◽  
Ahmed E. Hassan ◽  
Michael W. Godfrey ◽  
...  

2020 ◽  
Vol 5 (1) ◽  
pp. 119-130
Author(s):  
Raúl Rojas ◽  
Farzan Irani

Purpose This exploratory study examined the language skills and the type and frequency of disfluencies in the spoken narrative production of Spanish–English bilingual children who do not stutter. Method A cross-sectional sample of 29 bilingual students (16 boys and 13 girls) enrolled in grades prekindergarten through Grade 4 produced a total of 58 narrative retell language samples in English and Spanish. Key outcome measures in each language included the percentage of normal (%ND) and stuttering-like (%SLD) disfluencies, percentage of words in mazes (%MzWds), number of total words, number of different words, and mean length of utterance in words. Results Cross-linguistic, pairwise comparisons revealed significant differences with medium effect sizes for %ND and %MzWds (both lower for English) as well as for number of different words (lower for Spanish). On average, the total percentage of mazed words was higher than 10% in both languages, a pattern driven primarily by %ND; %SLDs were below 1% in both languages. Multiple linear regression models for %ND and %SLD in each language indicated that %MzWds was the primary predictor across languages beyond other language measures and demographic variables. Conclusions The findings extend the evidence base with regard to the frequency and type of disfluencies that can be expected in bilingual children who do not stutter in grades prekindergarten to Grade 4. The data indicate that %MzWds and %ND can similarly index the normal disfluencies of bilingual children during narrative production. The potential clinical implications of the findings from this study are discussed.


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