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Search Results: 1 - 10 of 41 matches for " Kenza Elatiqi "
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Computed Tomography of the Petrous Bone: Particularities in Children  [PDF]
Dounia Basraoui, Kenza Elatiqi, Hicham Jalal
Advances in Molecular Imaging (AMI) , 2018, DOI: 10.4236/ami.2018.82002
Abstract: Like any organ in children, the ear has particular anatomical features that are well shown in imaging. The petrous bone computed tomography (CT) is a valuable tool for diagnosing ear pathologies and evaluating surgical possibilities. In children, the ear has the peculiarity of having the morphology and size of adults, and the only difference resides in the components of the middle and inner ear related to the growth of the temporal bone and the state of ossification which are progressive with age. Some aspects of growth can simulate pathology and must be known. The pneumatisation of the temporal bone occurs gradually after birth and in several outbreaks until adulthood. The external auditory canal, the internal auditory meatus and the petromastoid canal progressively reach the adult aspect because of the growth of the petrous bone. This work aims to highlight the particularities of the petrous bone CT in pediatrics, since it has become widely used in the exploration of malformations, trauma, infectious complications of the ear and in the assessment of deafness.
Pseudo Papillary and Solid Pancreatic Tumor (PPSPT): A Diagnosis Not to Miss in Child  [PDF]
Hana Elmansouri, Kenza Elatiqi, Sara Dehbi, Salma Amouzoune, Hanane Rais, Ibtissam Zouita, Dounia Basraoui, Hicham Jalal
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105343
Pseudo papillary and solid pancreatic tumor (PPSPT) is a rare tumor that occurs almost exclusively in adolescents and young women. Radiological ex-ploration is mainly based on ultrasound and CT, which can often guide the diagnosis. We report the case of a 12-year-old girl, who was referred for suspicion of a hydatid cyst of the liver. Abdominal ultrasound showed a large solid-cystic mass, in contact with the hepatic hilum. Abdominal CT allowed a better study of the localization and the anatomical relationships of the mass. It was pancreatic head tumor encasing the portal vein and compressing the common biliary duct. The CT features suggest more a PPSPT or a pancreat-oblastoma. The pathological study after surgery confirmed the diagnosis of PPSPT.
Software Engineering Principles: Do They Meet Engineering Criteria?  [PDF]
Kenza Meridji, Alain Abran
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.310114
Abstract: As a discipline, software engineering is not as mature as other engineering disciplines, and it still lacks consensus on a well-recognized set of fundamental principles. A 2006 analysis surveyed and analyzed 308 separate proposals for principles of software engineering, of which only thirty-four met the criteria to be recognized as such. This paper reports on a further analysis of these thirty-four candidate principles using two sets of engineering criteria derived from: A) the engineering categories of knowledge defined by Vincenti in his analysis of engineering foundations; and B) the joint IEEE and ACM software engineering curriculum. The outcome of this analysis is a proposed set of nine software engineering principles that conform to engineering criteria.
Extending Refusal Testing by Stochastic Refusals for Testing Non-deterministic Systems
Kenza Bouaroudj
International Journal of Computer Science Issues , 2012,
Abstract: Testing is a validation activity used to check the systems correctness with respect to the specification. In this context, test based on refusals is studied in theory and tools are effectively constructed. This paper addresses, a formal testing based on stochastic refusals graphs (SRG) in order to test stochastic system represented by maximality-based stochastic labeled transition systems (MSLTS). First, we propose a framework to generate SRGs from MSLTSs. Second, we present a new technique to generate automatically a canonical tester from stochastic refusal graph and conformance relation confSRG. Finally, implementation is proposed and the application of our approach is shown by an example.
Two Families of Quantum Codes Derived from Cyclic Codes
Kenza Guenda
Mathematics , 2007,
Abstract: We characterize the affine-invariant maximal extended cyclic codes. Then by the CSS construction, we derive from these codes a family of pure quantum codes. Also for ordnq even, a new family of degenerate quantum stabilizer codes is derived from the classical duadic codes. This answer an open problem asked by Aly et al.
New MDS Self-Dual Codes over Large Finite Fields
Kenza Guenda
Mathematics , 2010,
Abstract: We construct MDS Euclidean and Hermitian self-dual codes over large finite fields of odd and even characteristics. Our codes arise from cyclic and negacyclic duadic codes.
The Permutation Groups and the Equivalence of Cyclic and Quasi-Cyclic Codes
Kenza Guenda
Mathematics , 2010,
Abstract: We give the class of finite groups which arise as the permutation groups of cyclic codes over finite fields. Furthermore, we extend the results of Brand and Huffman et al. and we find the properties of the set of permutations by which two cyclic codes of length p^r can be equivalent. We also find the set of permutations by which two quasi-cyclic codes can be equivalent.
Pentoxifylline suppressed LPS-induced inflammatory and apoptotic signaling in neuronal cells  [PDF]
Sameer K. Muchhala, Kenza E. Benzeroual
Advances in Bioscience and Biotechnology (ABB) , 2012, DOI: 10.4236/abb.2012.326094
Abstract: Several studies have reported a relation between increased pro-inflammatory mediators such as TNF-α and apoptosis in neurodegenerative diseases such as Alzheimer’s disease (AD). It is known that lipopoly-saccharide (LPS) treatment induces neuroinflammation and memory deterioration, and it has been reported that LPS induces apoptosis mostly through the production of TNF-α. Pentoxifylline (PTX), is a vascular protective agent and a potent TNF-alpha inhibitor. However, the molecular neuroprotective mechanisms of PTX against LPS-induced neurotoxicity have not been well studied. In this study, we investigated the direct protective effect of PTX against LPS-induced toxicity in Rat pheochromocytoma (PC12) cell line. The results showed that a pretreatment with PTX prior exposure to LPS signifycantly decreased LPS-induced cell death. Mechanisms study showed that PTX has the potential to inhibit pro-inflammatory and pro-apoptotic pathways via the suppression of TNF-α and a caspase-dependent pathway in neuronal PC12 cells. This is the first study to report the anti-inflammatory and anti-apoptotic effects of PTX via inhibition of TNF-α and a caspase-dependent pathway in neuronal PC12 cells. Altogether, these observations indicate that PTX is capable of promoting neuroprotective effects, meanwhile also present some insights into the potential signaling pathways that are involved. Thus, these findings support the potential for PTX to be investigated as a potential agent for the treatment of neurodegenerative diseases such as AD.
Self-dual Repeated Root Cyclic and Negacyclic Codes over Finite Fields
Kenza Guenda,T. Aaron Gulliver
Mathematics , 2012,
Abstract: In this paper we investigate repeated root cyclic and negacyclic codes of length $p^rm$ over $\mathbb{F}_{p^s}$ with $(m,p)=1$. In the case $p$ odd, we give necessary and sufficient conditions on the existence of negacyclic self-dual codes. When $m=2m'$ with $m'$ odd, we characterize the codes in terms of their generator polynomials. This provides simple conditions on the existence of self-dual negacyclic codes, and generalizes the results of Dinh \cite{dinh}. We also answer an open problem concerning the number of self-dual cyclic codes given by Jia et al. \cite{jia}.
New Symmetric and Asymmetric Quantum Codes
Kenza Guenda,T. Aaron Gulliver
Mathematics , 2012,
Abstract: New infinite families of quantum symmetric and asymmetric codes are constructed. Several of these are MDS. The codes obtained are shown to have parameters which are better than previously known. A number of known codes are special cases of the codes given here.
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