Covenant Journals (Covenant University)
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A comparative study of Zinc (II) ions removal by a locally produced Granular activated carbon
Full text linkPhysiochemical properties of wastewater effluent from the plants of a brewery in Lagos, Nigeria were analyzed. The adsorption capacity of Granular activated carbon from animal horns when compared with the available commercial Granulated Activated Carbon (GAC) has been presented. Kinetics of adsorption was also investigated. The adsorption isotherms could be well defined with Freundlich model instead of Langmuir model for both GAC studied. The experimental data, when applied to the first and second-order kinetic models, followed the first-order with r² = 0.931 for GAC from animal horns while commercial GAC followed the second-order with r² = 0.936. The results illustrated how animal horns, a solid waste disposal menace from the abattoir at the Oshodi market in Lagos metropolis, was used as an effective biosorbent for the removal of Zn2+ ions; offering a cheap option for primary treatment of the wastewater effluent.Keywords— Biosorption, animal horns, Granulated Activated Carbon, wastewater, effluen
BILINGUAL JOURNALISM EDUCATION IN CHINA AND NIGERIA: A CASE OF TWO OPPOSITES
Full text linkWhile bilingual journalism education in China aims at training students to be professionals with the ability of communicating in a foreign language, English, a similar kind of training in Nigeria purposes to train students to be professionals in the media with the ability of using an indigenous language, Yoruba. Acquiring a foreign language to reach a wider audience is not a problem in Nigeria; English is already dominant in the media of the country. The struggle is to ensure the survival of the indigenous language, and to make attractive its learning, especially at the University level. In China, the indigenous languages are dominant; the purpose of the BJE therefore is to reach an international audience. While BJE in China has been in existence for decades, it is just about ten years old in Nigeria. This paper examines the two BJE models in China and Nigeria, and draws out their similarities and differences as well as implications for journalism education.Keywords: Bilingual Journalism Education, Indigenous Language, Journalism Education, China, Nigeri
STUDENTS’ PERCEPTIONS AND USE OF THE INTERNET AS A NEWS CHANNEL Levi OBIJIOFOR, Ph.D.
Full text linkNew technologies, in particular the Internet, have transformed journalistic practices in many ways around the world. While a number of studies have investigated how established journalists are dealing with and using new technologies in a number of countries, very little attention has been paid to how student journalists view and use the Internet as a source of news. This study examined the ways in which second and third-year journalism and arts students at the University of Queensland (Australia) get their news, how they use the Internet as a news channel, as well as their perceptions and use of other new technologies. The authors draw on the theoretical frameworks of uses and gratifications, as well as the media richness theory to explore the primary reasons why students use and perceive the Internet as a news channel.KEYWORDS: Internet, New technologies, News, News source, University students, Australi
Mathematical Modeling of Software Bug Complexity
Full text linkDuring testing of software, most of the bugs lying dormant in the software gets uncovered once the test cases are executed. Different bugs may take different amounts of effort and expertise for their removal. To understand the complexity of bugs from a developer‟s perspective, researchers have developed different mathematical models. Software consists of two types of bugs, dependent and independent. Dependent bugs are those whose removal depends upon the removal of some other bugs on which it is dependent. Dependency of bugs also makes the bug complex and bugs will take more time during fixing. Different debugging time lags functions have been taken to model different complexity of bugs. The aim of this paper is to study the bugs of different complexity. The complexity of bugs has been also modeled using dependency concept. Testing effort dependent bug complexity model using fault dependency has been also discussed. We also feel that that more complex bug will take more time and less complex bug will take less time during fixing. During removal of bugs, the removal team gets more familiar with the code during the fixing. The learning effect during testing has been incorporated using logistic removal rate. The models are validated based on different comparison criteria namely MSE, R2 , Bias, Variation and Root mean squared error.Keywords/Index Terms: Non-homogeneous Poisson process, bug complexity, bugs types
Improving Security Using Refined 16 X 16 Playfair Cipher for Enhanced Advanced Encryption Standard (AES)
Full text linkThe conventional playfair cipher has lost its potency due to the sophistication of modern systems that can break it by brute force. This work proposes an improved playfair encryption and decryption that will be hard to break by brute force procedure. It uses a 16 X 16 arrays of ASCII characters ensuring relevance in all computing fields instead of the conventional 26 upper case alphabets substitution. An implementation of the cryptographic concept was realized using PHP programming language and embedded in the Advanced Encryption Standard (AES) algorithm. We argue from the perspective of cryptanalysis that our proposed approach is stronger and will be more difficult to break.Keywords: Playfair, cryptanalysis, encryption, decryption, security, ASCII
A Model-Driven Approach for Business Process Management
Full text linkThe Business Process Management is a common mechanism recommended by a high number of standards for the management of companies and organizations. In software companies this practice is every day more accepted and companies have to assume it, if they want to be competitive. However, the effective definition of these processes and mainly their maintenance and execution are not always easy tasks. This paper presents an approach based on the Model-Driven paradigm for Business Process Management in software companies. This solution offers a suitable mechanism that was implemented successfully in different companies with a tool case named NDTQ-Framework.Keywords/Index Terms: Model-Driven Web Engineering, Web Engineering, Web Development Methodologies, Business Process Managemen
Creative Thinking in eXtreme Programming
Full text linkAgile methods such as eXtreme Programming have achieved an explosive interest in the software development community. They can be seen as a reaction to the more traditional and control-oriented methods, agile methods handle changes in design and requirements and they open up for creativity during the whole project lifecycle. The knowledge management in agile methods is also agile, it means that knowledge creation and sharing processes are simplified in comparison with other more comprehensive development methodologies. This paper is developed under the idea that agile software development can be enhanced by a better understanding of knowledge management and creativity. eXtreme Programming is analyzed from the perspective of the creativity, we believe that concepts related to creative teams (roles, structure, performance and purposes) are important insights about the use of agile methods in general and eXtreme Programming in particular.Keywords/Index Terms: Knowledge Management; Creativity; Software Engineering; Agile Methods; User-centered innovation
GODFATHERISM, OWNERSHIP INFLUENCE AND MEDIA TREATMENT OF POLITICAL CONFLICTS IN OYO STATE, NIGERIA
Full text linkMedia coverage of political crises, especially in a terrain fraught with the increasing influence of godfatherism, ownership and political affiliation has a serious consequence on the society. The political feud between Late Chief Lamidi Ariyibi Adedibu and his „political son‟, Senator Rashidi Adewolu Ladoja in Oyo State, Nigeria (2005-2007), provided a typical example of godfatherism, and media coverage of the conflict typified ownership influence on news media operations. Anchored on the framing theory, this study employed content analysis to examine how The Nigerian Tribune and The Nation newspapers treated the political conflict in terms of the degree of prominence accorded the two principal actors and how ownership factor and political affiliation shaped the contents of the newspapers. Findings show that The Nation, a newspaper believed to be owned by a stalwart of the Action Congress of Nigeria (ACN), was less critical of Senator Rashidi Ladoja and reported more of anti-Adedibu stories. The Nigerian Tribune, on the other hand, reported more of anti-Ladoja stories, and was less critical of Chief Lamidi Adedibu. This paper concludes by urging media actors to free themselves from the web of partisan politics and be more objective in the discharge of their duties as societal watchdogs.KEY WORDS: Content Analysis, Framing Theory, Godfatherism, Ownership Influence, Political Conflicts
JOURNALISTS’ PERCEPTION OF BROWN ENVELOPE SYNDROME AND ITS IMPLICATIONS FOR JOURNALISM PRACTICE IN NIGERIA
No full textThis study examined journalists‟ perception of the brown envelope syndrome and its implication for journalism practice in Nigeria. It surveyed some selected journalists as well as interviewed other journalism practitioners to reach the conclusion that greed is the major cause of the brown envelope syndrome in Nigeria. The paper also noted that this ignoble practice influences journalism practice negatively as some important issues are downplayed while unimportant ones are exaggerated in a bid to satisfy the givers of these brown envelopes. The paper concludes that giving and/or accepting of brown envelopes is corrupt and unprofessional conduct that must be punished and stopped. It therefore recommended that media professional bodies should be serious in maintaining ethics in the media industry by sanctioning defaulting journalists and by so doing, ensure highest professional conduct of members in all situations.Key words: Brown envelope syndrome, Ethics, Professionalism, Media, Journalists, Nigeria