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Search Results: 1 - 10 of 4424 matches for " Ibrahim Moukouop Nguena "
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Automatic Synchronization of Common Parameters in Configuration Files  [PDF]
Moupojou Matango Emmanuel, Moukouop Nguena Ibrahim
Journal of Software Engineering and Applications (JSEA) , 2015, DOI: 10.4236/jsea.2015.84020
Abstract: In an information system, applications often make use of services that they access using the parameters described in their configuration files. Various applications then use different codes to denote the same parameters. When access parameters of a service are modified, it is necessary to update them in every configuration file using them. These changes are necessary, for example because of security policies involving regular changes of passwords, or departure of some system administrators. The database password could be changed for example. When system administrators can not immediately identify all services affected by a change or when they feel they don’t have the skills to edit these files, these parameters remain unchanged, creating critical security flaws. This was observed in more than 80% of the organizations we studied. It then becomes necessary to ensure automatic synchronization of all affected files when changing certain settings. Conventional synchronization solutions are difficult to apply when the relevant applications have already been developed by third parties. In this paper, we propose and implement a solution to automatically update all configuration files affected by a change, respecting their structure and codification. It combines a parameters database, a mapping between the configuration files parameters codes and those of the database, and templates for the generation of files. It achieves the objective for all non-encrypted configuration files.
Fast Semantic Duplicate Detection Techniques in Databases  [PDF]
Ibrahim Moukouop Nguena, A.-M. O. C. Richeline
Journal of Software Engineering and Applications (JSEA) , 2017, DOI: 10.4236/jsea.2017.106029
Abstract: Semantic duplicates in databases represent today an important data quality challenge which leads to bad decisions. In large databases, we sometimes find ourselves with tens of thousands of duplicates, which necessitates an automatic deduplication. For this, it is necessary to detect duplicates, with a fairly reliable method to find as many duplicates as possible and powerful enough to run in a reasonable time. This paper proposes and compares on real data effective duplicates detection methods for automatic deduplication of files based on names, working with French texts or English texts, and the names of people or places, in Africa or in the West. After conducting a more complete classification of semantic duplicates than the usual classifications, we introduce several methods for detecting duplicates whose average complexity observed is less than O(2n). Through a simple model, we highlight a global efficacy rate, combining precision and recall. We propose a new metric distance between records, as well as rules for automatic duplicate detection. Analyses made on a database containing real data for an administration in Central Africa, and on a known standard database containing names of restaurants in the USA, have shown better results than those of known methods, with a lesser complexity.
Research on the prevalence of conduct disorders among primary school pupils in Khartoum-Sudan  [PDF]
Ibrahim Abdelrahim Ibrahim Humaida
Health (Health) , 2012, DOI: 10.4236/health.2012.43020
Abstract: The aim of this research was to investigate conduct disorder among pupils of primary schools in Khartoum, the capital of Sudan. School survey descriptive method was used and 384 pupils were selected from primary schools through systematic sampling technique. Age ranged from 5 to 17 years old with a mean of (9.34) years. The tools of data collection consisted of the Sutter-Eyberg Student Behavior Inventory. The statis-tical tests used to analyze the collected data involve frequency and percentage, Pearson co-efficient of correlation, mean, t-test for one sample and t-test for two independent samples. The results of this research revealed that that the prevalence of conduct disorder among pupils of primary schools in Khartoum was low. There were significant differences in conduct disorder between male and females pupils. There were no significant differences between pupils of pre-paratory classes and pupils of elementary classes. There was no significant correlation between conduct disorder and age.
Periodicity and Solution of Rational Recurrence Relation of Order Six  [PDF]
Tarek F. Ibrahim Ibrahim
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.37107
Abstract: Difference equations or discrete dynamical systems is diverse field whose impact almost every branch of pure and ap- plied mathematics. Every dynamical system an+1=f(an) determines a difference equation and vise versa. We ob-tain in this paper the solution and periodicity of the following difference equation. xn+1=(xnxn-2xn-4)/(xn-1xn-3xn-5, (1) n=0,1,... where the initial conditions x-5,x-4,x-3,x-2,x-1 and x0 are arbitrary real numbers with x-1,x-3 and x-5 not equal to be zero. On the other hand, we will study the local stability of the solutions of Equation (1). Moreover, we give graphically the behavior of some numerical examples for this difference equation with some initial conditions.
Relationship between Stress and Psychosomatic Complaints among Nurses in Tabarjal Hospital  [PDF]
Ibrahim Abdelrahim Ibrahim Humaida
Open Journal of Medical Psychology (OJMP) , 2012, DOI: 10.4236/ojmp.2012.13003
Abstract: This research was conducted to examine the relationship between stress and psychosomatic complaints among nurses in Tabarjal hospital. To achieve this aim, the researcher used the descriptive method and selected a sample consisting of (56) nurses working in hospital through the simple random sampling technique. The respondents were requested to complete a questionnaire for rating of stress and the most common psychosomatic diseases. The collected data were analyzed statistically by using SPSS. The results revealed that the stress was dominant among nurses in Tabarjal hospital, the prevalence of psychosomatic complaints was significantly higher in nurses, and there was significant correlation between stress and psychosomatic complaints among nurses. Conclusion: This research confirmed the effect of strains on the prevalence of psychosomatic symptoms among nurses in Tabarjal hospital. Further, implications of the results were discussed on the light of some related researches.
Analysis of Electrical Characteristics of Photovoltaic Single Crystal Silicon Solar Cells at Outdoor Measurements  [PDF]
A. Ibrahim
Smart Grid and Renewable Energy (SGRE) , 2011, DOI: 10.4236/sgre.2011.22020
Abstract: The electrical performance of a photovoltaic (PV) silicon solar cell is described by its current–voltage (I–V) character-istic curve, which is in turn determined by device and material properties. In this study, an investigation of the performance and device parameters of photovoltaic single crystalline silicon (Si.) solar cell of the construction n+pp++ PESC(Passivatted Emitter Solar Cell) at different conditions of solar irradiance, title angle and mirror boosting effects had been studied. Also the paper reports on the performance data of the Si. cell, using standard I–V characteristic curves to obtain output parameters and to show that there are possible performance degrading defects presents.
The Influence of Memetic Primers in Online Comments in Video Game Blogs  [PDF]
Ibrahim Yucel
Advances in Internet of Things (AIT) , 2012, DOI: 10.4236/ait.2012.23008
Abstract: Through investigating a particular blog, several factors were found which have significant influence on reader actions. This study uses the term “memetic primers” for those styles that most often cause readers to take notice of a particular comment, remember information included in it, and take action. The memetic primers were derived in a discourse analysis. The study discovered the memetic primers using logic-of-inquire approach to the online comments. While evidence indicated that the usefulness of some primers was low, it emerged those negatively written comments where the most common impact on a comment’s volume.
Localisation Inverse Problem and Dirichlet-to-Neumann Operator for Absorbing Laplacian Transport  [PDF]
Ibrahim Baydoun
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.46106
Abstract:

We study Laplacian transport by the Dirichlet-to-Neumann formalism in isotropic media (γ = I). Our main results concern the solution of the localisation inverse problem of absorbing domains and its relative Dirichlet-to-Neumann operator \"\" . In this paper, we define explicitly operator \"\", and we show that Green-Ostrogradski theorem is adopted to this type of problem in three dimensional case.

Localisation Inverse Problem of Absorbing Laplacian Transport  [PDF]
Ibrahim Baydoun
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.45080
Abstract:

We study the localisation inverse problem corresponding to Laplacian transport of absorbing cell. Our main goal is to find sufficient Dirichelet-to-Neumann conditions insuring that this inverse problem is uniquely soluble. In this paper, we show that the conformal mapping technique is adopted to this type of problem in the two dimensional case.

Beginning Readers in Arabic and the Distance between Literary and Spoken Arabic  [PDF]
Raphiq Ibrahim
Creative Education (CE) , 2013, DOI: 10.4236/ce.2013.45046
Abstract:

Two groups of kindergarten children received a battery of phonological awareness, reading, and general abilities tests across a two-year period. One of the groups received phonological training whereas the other (control) group did not. Results indicated that children who received intervention improved in certain phonological awareness skills tested at the end of kindergarten but not in reading skills tested at the end of 1st year. These findings are in contrast to findings compared to those found by Carlisle (1995) and Lyster (2002) in English, but were in line with the findings found by Ibrahim et al. (2007) in Arabic and support the notion that normal Arab child encounters special difficulties in reading acquisition. The psycholinguistic basis and implications of these findings are discussed.

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