OALib Journal期刊

ISSN: 2333-9721




2019 ( 2 )

2018 ( 23 )

2017 ( 23 )

2016 ( 37 )


匹配条件: “Khalid Astitene” ,找到相关结果约1940条。
Post Traumatic Stress Disorder in Schooled Adolescents in Detention  [PDF]
Khalid Astitene, Amina Barkat
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104929
Objective: The detention have a negative impact on the psychological well-being of adolescents in detention; the purpose of our study is to assess the post-traumatic stress disorder PTSD in a incarcerated adolescents in school at the level of the centre of reform and discipline of the prefecture of Salé in Morocco, to evaluate comorbid disorders and thus to study the effect of PTSD on their social and school life. Method and measures: Regarding to 52 adolescents, incarcerated male in school who have complemented the objectives of the study, their age varies between 13 and 17 years old and they supplemented by themselves successively questionnaires concerning sociodemographic data, a list of life events score, the CPTS-RI (Children Post Traumatic Stress Reaction Index) to assess the symptoms of PTSD, the STAIY (State Trait anxiety Inventory) and CDI (Children Depression Inventory). Results: A high proportion of post-traumatic stress disorder was found among students with 78.85% but with different levels (23.08% PTSD low, 28.85% PTSD moderate and 26.92% PTSD severe). 84.62% of students are anxious and 82.7% of students experience depression. In the event the main traumatic condition that caused the post-traumatic stress disorder was detention with 44.2% followed by a road accident with 15.4%. PTSD, anxiety and depression have a negative effect on students’ school life; therefore, 90.4% of students have poor grades. Conclusion: Given this specific category of students who are in detention and who are in deficit serious school, we have this high rate of post-traumatic stress disorder. There are the practical implications for the support and care for these adolescents.
Post Traumatic Stress Disorder among Adolescents Schooled in Public Schools  [PDF]
Khalid Astitene, Amina Barkat1, Laila Lahlou
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1105019
Objective: A traumatic event has a negative impact on the psychological well-being of adolescents, the purpose of our study is to assess the post-traumatic stress disorder PTSD in adolescents in public schools of the prefecture of Salé in Morocco, to evaluate comorbid disorders and thus to study the effect of PTSD on their social and academic life. Method and measures: 871 school adolescents who completed the objectives of the study, their age varied between 12 and 17 years and they completed by themselves the questionnaires concerning socio-demographic data, a list of life events, the CPTS-RI (Children’s Post Traumatic Stress Reaction Index) for assessing the symptoms of PTSD, STAIY (State Trait Inventory Anxiety) and CDI (Children Depression Inventory). Results: A large proportion of post-traumatic stress disorder was found in students with 63.9% but with different levels (19.5% PTSD low, 25.1% PTSD moderate, 18.1% PTSD severe and only 1.2% PTSD very severe). 84.4% of students are anxious and 55.2% of students have depression. Adolescents who have been exposed to at least one traumatic event in their lifetime have 88.69%. In the event, the main traumatic condition that caused the post-traumatic stress disorder was the sudden and unexpected death of a loved one with 27.7%. PTSD, anxiety and depression have a negative effect on students’ school life; therefore, 72.5% of students have poor grades. Conclusion: A traumatic event can develop at a PTSD. There is a high rate of post-traumatic stress disorder and students are in school deficit. There are practical implications for the support and care provided to these adolescents.
An Application of Cyclotomic Polynomial to Factorization of Abelian Groups  [PDF]
Khalid Amin
Open Journal of Discrete Mathematics (OJDM) , 2011, DOI: 10.4236/ojdm.2011.13017
Abstract: If a finite abelian group G is a direct product of its subsets such that G = A1···Ai···An, G is said to have the Hajos-n-proprty if it follows that one of these subsets, say Ai is periodic, meaning that there exists a nonidentity element g in G such that gAi = Ai . Using some properties of cyclotomic polynomials, we will show that the cyclic groups of orders pα and groups of type (p2,q2) and (pα,pβ) where p and q are distinct primes and α, β integers ≥ 1 have this property.
Changes in the Shoreline Position Caused by Natural Processes for Coastline of Marsa Alam – Hamata, Red Sea, Egypt  [PDF]
Khalid Dewidar
International Journal of Geosciences (IJG) , 2011, DOI: 10.4236/ijg.2011.24055
Abstract: The probability of storms and ice-drift events and their impact on coasts is expected to increase as result of climate change. Multi-years shoreline mapping is considered a valuable task for coastal monitoring and assessment. This paper presents shoreline maps illustrating the shoreline erosion accretion pattern in the coastal area between Marsa Alam – Hamata of Red Sea coastline by using different sources of remote sensing data. In the present study, Landsat MSS (1972), Landsat TM (1990), Landsat ETM+ (1998, 2000) and Terra Aster (2007) satellite images were used. In this study, two techniques were used to estimate rate of shoreline retreat. The first technique is corresponding to the formation of automated shoreline positions and the second one is for estimating rate of shoreline change based on data of remote sensing applying Digital Shoreline Analysis System (DSAS) software. In this study, the End Point Rate (EPR) was calculated by dividing the distance of shoreline movement by the time elapsed between the earliest and latest measurements at each transect. Alongshore rate changes shows that there are changes of erosion and accretion pattern due to coastal processes and climate changes.
Simulation of Average Turbulent Pipe Flow: A Three-Equation Model  [PDF]
Khalid Alammar
Open Journal of Fluid Dynamics (OJFD) , 2014, DOI: 10.4236/ojfd.2014.41005
Abstract: The aim of this study is to evaluate a three-equation turbulence model applied to pipe flow. Uncertainty is approximated by comparing with published direct numerical simulation results for fully-developed average pipe flow. The model is based on the Reynolds averaged Navier-Stokes equations. Boussinesq hypothesis is invoked for determining the Reynolds stresses. Three local length scales are solved, based on which the eddy viscosity is calculated. There are two parameters in the model; one accounts for surface roughness and the other is possibly attributed to the fluid. Error in the mean axial velocity and Reynolds stress is found to be negligible.
An Updated Review on Chicken Eggs: Production, Consumption, Management Aspects and Nutritional Benefits to Human Health  [PDF]
Khalid Zaheer
Food and Nutrition Sciences (FNS) , 2015, DOI: 10.4236/fns.2015.613127
Abstract: Ancestors of the modern chicken were domesticated from members of the Gallus genus probably 7 to 8 thousand years ago in southeastern Asia. Subsequently, they spread globally for meat and egg production. In the chicken egg, there is a balance of numerous, high-quality nutrients, many of which are highly bioavailable. The egg confers a multitude of health benefits to consumers emphasizing its classification as a functional food. Current global per capita egg consumption estimates approach 9 kg annually but vary greatly on a regional basis. This review deals with global production, consumption, and management aspects such as hygiene, feeding, and housing. Management aspects play key roles in the composition, quality, food safety, and visual (consumer) appeal of the egg. Also the manipulation of egg nutrients and value for human health is discussed.
Advances in MIMO Techniques for Mobile Communications—A Survey  [PDF]
Farhan Khalid, Joachim Speidel
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2010, DOI: 10.4236/ijcns.2010.33031
Abstract: This paper provides a comprehensive overview of critical developments in the field of multiple-input multiple-output (MIMO) wireless communication systems. The state of the art in single-user MIMO (SU-MIMO) and multiuser MIMO (MU-MIMO) communications is presented, highlighting the key aspects of these technologies. Both open-loop and closed-loop SU-MIMO systems are discussed in this paper with particular emphasis on the data rate maximization aspect of MIMO. A detailed review of various MU-MIMO uplink and downlink techniques then follows, clarifying the underlying concepts and emphasizing the importance of MU-MIMO in cellular communication systems. This paper also touches upon the topic of MU-MIMO capacity as well as the promising convex optimization approaches to MIMO system design.
Study of Ionic Conduction and Dielectric Behavior of Pure and K+ Doped Ag2CdI4  [PDF]
Khalid Siraj, Rafiuddin Rafiuddin
Soft Nanoscience Letters (SNL) , 2012, DOI: 10.4236/snl.2012.22003
Abstract: The ionic conductivity of 8, 9 and 10 mol% K+ doped Ag2CdI4 showed slight decrease whereas the phase transition was observed almost at the same temperature as it reported for pure Ag2CdI4. This decrease in conductivity likely results from decrease in free volume because of the larger K+ ions (rK+ = 133 pm and rAg+ = 129 pm) entering Ag2CdI4 lattice which is unchanging in size. The dielectric constant of Ag2CdI4 was found to increase with increasing temperature as the orientation of dipoles is facilitated in rising temperature.
Some Characters of Cl. perfringens Isolated from Fresh and Marketed Processed Meat  [PDF]
Khalid A. Alkheraije
Open Journal of Veterinary Medicine (OJVM) , 2013, DOI: 10.4236/ojvm.2013.32029

This study was carried out a fresh meat immediately after slaughter and a marketed processed cattlemeat (sausage and minced meat). A total of 530 meat samples were examined for the presence of Cl. perfringens, 423 were from fresh meat obtained immediately after slaughtering (108 cattle meat, 101 sheep meat, 100 camel meat and 114 buffaloe meat) and 107 processed meat (57 from sausage and 50 from minced meat). Cl. perfringens was isolated from 204 (48.2%) of fresh meat samples, 61 (56.5%) from cattle, 53 (52.5%) from sheep meat, 45 (45%) from camel meat and 45 (39.5%) from buffaloe meat. The isolation rate of Cl. perfringens was higher in processed meat, it was isolated from 68 (63.6%) of which 45 (78.9%) from sausage and 23 (46%) in minced meat. The processed meat was found to harbour higher viable count ranging between 4 × 102 - 7 × 106 Cl. perfringens cells/gm meat than that Fresh meat in which the number ranged from 102:5 × 106 cells/gm meat. Typing of isolated strains revealed that the majority of it was of Cl. perfringens type A, 2 of type B, 3 of type C and one type D. Sixty strains of Cl. perfringens type A were randomized and tested for heat resistance at 100and the results were recorded. Production of enterotoxin by 10 strains of Cl. perfringens was performed by ligated ileal loop test in rabbits. It was done by injection of whole culture in skimmed milk, cell extracts and concentrated culture filtrates of the organism in the ileal ligated loop of rabbits and the results were recorded.

A Formal Model of Conformity and Security Testing of Inheritance for Object Oriented Constraint Programming  [PDF]
Khalid Benlhachmi, Mohammed Benattou
Journal of Information Security (JIS) , 2013, DOI: 10.4236/jis.2013.42013

This paper presents an approach for extending the constraint model defined for conformity testing of a given method of class to its overriding method in subclass using inheritance principle. The first objective of the proposed work is to find the relationship between the test model of an overriding method and its overridden method using the constraint propagation. In this context the approach shows that the test cases developed for testing an original method can be used for testing its overriding method in a subclass and then the number of test cases can be reduced considerably. The second objective is the use of invalid data which do not satisfy the precondition constraint and induce valid output values for introducing a new concept of test called secure testing. The implementation of this approach is based on a random generation of test data and analysis by formal proof.


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