During software development various forms of software documentation can be produced to make the software easier to understand and maintain after the software have been developed. One of these forms of software documentation is code comments, which is a form of software documentation that is produced to make source code easier to read and maintain. Although code comments make the code easier to read and maintain, code comments can become outdated and inconsistent with their corresponding code. Outdated and inconsistent code comments increase the probability for future bugs and when these comments are encountered, developers could lose the confidence for all other comments. In order to reduce the amount of outdated and inconsistent code comments, a program named the comment validator is presented in this study. The comment validator provides developers with the opportunity to manually validate code comments by segmenting code into three segments of code that needs to be manually validated: classes, methods and properties. The comment validator identifies when code segments have been modified after validation, therefore indicating that the code segments corresponding code comments could be outdated and inconsistent. The comment validator were evaluated through functional testing and through a field study in order to test that the comment validator could reduce the amount of outdated and inconsistent code comments. The evaluation showed that the comment validator did remove outdated and inconsistent code comments when it were used according to the description presented in this study, therefore providing a new way to reduce the amount of outdated and inconsistent code comments in software development projects.

This study examines the language situation in the media discourse on The Opposite Direction, al-Jazeera’s flagship talk show hosted by Faisal al-Qasim. It investigates the phenomenon of code-switching between Standard Arabic and different spoken vernaculars during the talk exchange. Theories of code-switching proposed by Gumperz, Giles, and Myers-Scotton et al. are introduced after the history of Arabic discourse analysis is briefly discussed. In order to explain under what conditions code-switching happens, I choose to observe and analyze instances of code-switching in four episodes of the program, focusing on the communicative functions and motivations for language choice. The applicability of relevant theories is examined to find the theories that best account for speakers’ engaging in code-switching in the pan-Arab media discourse. / text

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Studies have discovered higher frequencies of single nucleotide polymorphisms (SNPs) in different mitochondrial genes are associated with subnormozoospermia. However, the frequencies of SNPs in ND1 and ND2 are not unknown. The present research was aimed to determine the frequencies of SNPs in ND1 and ND2 genes of the mitochondrial genome in fertile and subfertile men and whether changes in codon usage was associated with fertility phenotypes. Total genomic DNA from 157 semen samples was extracted using the proteinase K/SDS digestion procedure, followed by phenol/chloroform purification and ethanol precipitation. ND1 and ND2 genes were amplified respectively from 80 and 92 DNA samples from different fertility groups. Each PCR product was sequenced to identify mutations. Codon change resulting from a nucleotide substitution was determined by comparison with a reference mtDNA sequence obtained from the NCBI database. The frequency of codon usage in the reference mtDNA was determined by the computer program MEGA version 2.1. Eleven synonymous nucleotide substitutions and two non-synonymous substitutions were found in this study. Four SNPs were previously characterized; all SNPs were homoplasmic. None of the SNPs were likely to affect the function of the proteins on the basis of the hydrophobicity plots or secondary structure predictions. Sixty two percent of synonymous mutations were found to change from a high to a low relative codon usage values; 37% of synonymous mutations changed from a low to a high relative usage value. Chi-square (χ²) test (χ²= 0.067 with 1 d.f.) showed that there was no significant difference at the 5% level between these changes. Thus, change in codon usage was not related to semen quality in men. Further, there were no statistically significant differences in the observed frequencies of SNPs of fertile and subfertile men. However, the sample size was small and this study was only focused on a single NZ Caucasian population. Further study including larger and more diverse population samples may provide further insight into the functional importance of codon usage and its relevance to fertility

Codeswitching between languages is a uniquely bilingual mode of communication. The purpose of this dissertation is to enhance the current body of knowledge dealing with the phenomenon by analysing samples of speech produced by twenty-six Spanish/English bilingual children ranging in age from eight to twelve. Methods of analysis include theoretical linguistics, sociolinguistics, psycholinguistics, and educational linguistics. A discussion of relevant codeswitching research covering the past thirty years is presented. The data were collected during a reading study focusing on miscue analysis. The children read stories in English and retold them in both Spanish and English. The analysis considers the data from the four previously mentioned points of view. The linguistic analysis looks at the locations of switched constituents within the sentence and the frequency with which those constituents are switched. The data of this study are compared with that of other researchers, and a consideration of a formal grammar of codeswitching is presented. The sociolinguistic analysis addresses the effect of social and stylistic variables on codeswitching. The psycholinguistic analysis of codeswitching covers lexical storage, editing phenomena, and developmental aspects. Finally, some aspects of the education of bilinguals are considered by analysing the effect of the printed word on language switching and dialect shifting . The application of the results of the analysis to both theoretical issues and practical concerns is explored along with suggested areas for future research. The analyses show that young children's codeswitching initially favors less complex structures and is influenced by few social variables. As they grow older, they become more comfortable with switching grammatically complex structures, and they become aware of a greater variety of social factors. A separate grammar is not necessary for a complete description of codeswitching; a modified interdependance model of the two grammars can account for the codeswitching mode. Lastly, the written language becomes part of the speech situation in the classroom and affects the choice of language or dialect spoken.

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