Publications scientifique de l'Université de Mascara

Publications scientifiques des enseignants de l'Université de Mascara

:

 

Chercher dans la Plateforme par :


2019
الإطار القانوني للمؤسسة العمومية في الجزائر كعون اقتصادي
La revue : جامعة الشارقة للعلوم القانونية
Domaine : القانون
Mots Clés : المؤسسة العمومية-المرفق العام- العون الاقتصادي
Auteur :
Issn : Eissn : 2616-6526 vol : 16, Num : 01, pp :
Résume :
تسعى الجزائر كدولة يعيش اقتصادها مرحلته الانتقالية ، إيجاد حلول وسط تمكّنها من تفعيل المبادئ الأساسية لاقتصاد السوق ،بعد ضبط الآليات التي تكرّس الدور التنظيمي و الرقابي للدولة في المجال الإقتصادي. تعتبر المؤسسة العمومية بمفاهيمها المختلفة أحد أهمّ صور تدخل الدولة في المجال الإقتصادي. ترتبط دراسة المؤسسة العامة من الناحية القانونية ارتباطا و ثيقا بالنظرية التقليدية للمرفق العام و القانون الإداري ، لذلك فمن البديهي أن يؤدي تحوّل هذه النظرية – تحديثها – إلى تحوّل في الطبيعة القانونية للمؤسسة العامة و في طبيعة الوظائف التي تؤديها و التي ترتبط في جزء منها بإدارة المرافق العامة الإقتصادية . و من هذا المنطلق جاءت إشكالية الورقة المقدمة، للبحث في مدى ملائمة الإطار القانوني للمؤسسة العمومية الإقتصادية تحديدا لمبادئ و قواعد اقتصاد السوق و للآليات المختلفة التي تدار بها المرافق العامة الإقتصادية . Abstract: As a country whose economy is in transition, Algeria seeks to find solutions that help it to activate the basic principles of the market economy, without ignoring its significant role as a joint economic participant, after the organization of the mechanisms that devote the regulatory role of the state in the economic sector and the public institution in its different concepts, the role of the intervening participant and the officer emerge. The public institution is adopted by Algeria as well as other countries, in order to avoid misadministration and administrative routine, as it is considered a tool of economic planning. In this sense, the problematic presented this paper was to examine the appropriateness of the legal framework of the public economic institution specifically to the principles and rules of the market economy and to the different mechanisms in which the economic utilities are managed
Page web de l'auteur

-0001
The effect of the plastic instability on the behavior of an amorphous polymer
La revue : Mathematical Modelling of Engineering Problems
Domaine :
Mots Clés : Amorphous Polymer, Damage, Mechanical Behavior, Modeling
Auteur : Ali Boudjelal Moulay., Bouiadjera Bachir Belabbes., Ould Chikh El Bahri, Elmeguenni Mohamed,
Issn : 2369-0739 Eissn : 2369-0747 vol : 4, Num : 1, pp : 53-58
Résume :
In manufacturing operations, numerous parts and components are formed into different shapes by applying external forces to the workpiece, typically by means of various tools and dies. Common examples of such operations are forging, extruding, drawing and rolling. Forming operations may be carried out at room temperature or at elevated temperatures, and at a low or a high rate of deformation. These operations are also used in forming and shaping non-metallic materials such as plastics and ceramics. However, the processes of working of polymers in a solid state are affected by phenomena of plastic instabilities. These phenomena are interpreters on the basis of intrinsic law of behavior of the material which express the influence of the deformation and the rate of deformation on the plastic yield stress. This law directly reflects the structural modifications undergone by material under the conditions of the test. In addition, she gives the necessary information to the modeling of instabilities using techniques of calculation such as the finite element method.
Page web de l'auteur

2018
Thermo-Mechanical Characterization of a Thermoplastic Copolyetherester (TPC): Experimental Investigation
La revue : Fibers and Polymers
Domaine : sciences des matériaux
Mots Clés : Thermoplastic elastomers, Rate-dependence, Stress-strain behavior, Volumetric strain
Auteur : Abdel-Nour Zaim, , El Bahri Ould Chikh, Benattou Bouchouicha
Issn : 1229-9197 Eissn : 1875-0052 vol : 19, Num : 4, pp : 734-741
Résume :
In this article, the thermo-mechanical characterization of poly(butylene terephthalate)/poly(tetramethylene oxide) (PBT/PTMO) is studied by thermal analysis, dynamic mechanical analysis, and uniaxial tensile tests. The results of poly(ether esters) show that the melting temperature is equal to Tm=193 oC, which is 31 oC, lower than that of the melting temperature of poly(butylene terephthalate) (PBT). Its glass transition temperature, Tg is equal to -61 oC, determined by DMA. The melting and cooling temperatures (Tm, Tc) after aging at T0+48 h and T0+week are virtually unchanged. Moreover, the results of the tensile tests show that the effect of the lo
Page web de l'auteur

-0001
Search for half-metallic ferromagnetism in orthorhombic Ce(Fe/Cr)O3 perovskites
La revue :
Domaine :
Mots Clés :
Auteur : A. Abbad, W. Benstaali, H. A. Bentounes, S. Bentata, Y. Benmalem
Issn : Eissn : vol : , Num : , pp :
Page web de l'auteur

2015
Tourism Spending-Economic Growth Causality in 49 Countries: A Dynamic Panel Data Approach
La revue : Procedia Economicsand Finance "Elsevier"
Domaine : Economie
Mots Clés :
Auteur : Mohammed Seghir GUELLIL, Mostéfa BELMOKADDEM, Mohammed Abbes SAHRAOUI, Yassine Zakarya GHOUALI
Issn : 2212-5671 Eissn : vol : 23, Num : , pp : 1613–1623
Page web de l'auteur

2019
Computational investigation of CrFeZ [Z = Si, Sn and Ge] half-Heusler compounds ferromagnets
La revue : Physica B : Condensed Matter
Domaine : Physics
Mots Clés : Half-Heusler, ab initio, Electronic, Magnetic, Mechanic properties
Auteur : Beloufa Abbès, Benaoumeur Bakhti, Driss Bouguenna, Mohammed Reda Chellali
Issn : 0921-4526 Eissn : 1873-2135 vol : 563, Num : 15, pp : 50–55
Résume :
The structural, electronic, magnetic and mechanical properties of the ternary CrFeZ half-Heusler compounds (with Z = Si, Sn, Ge) have been determined ab initio using a full-potential linearized muffin tin orbital approach. Equilibrium properties such as lattice constant, bulk modulus and its pressure derivative are calculated. Spin-orbit interaction effect in the electronic structure and Fermi levels are revealed. The majority-spin electrons are found to be metallic in nature, while the minority-spin electrons are found to be semiconducting electronic band-structure. It is shown that calculated band structures, density of states, magnetic moments, and elastic constants of these alloys agree well with available with theoretical and experimental data. In addition, the investigated compounds are found to be mechanical stable. Our findings predict new properties, as-yet unreported elastic parameters in the C1b structure, and thus may be realized under ideal experimental circumstances, which make them potential candidates for future spintronic applications.
Page web de l'auteur

2020
A Physics-Based Compact Static and Dynamic Characteristics Model for Al2O3/ InxAl1−xN/AlN/GaN MOS-HEMTs
La revue : Journal of Electronic Materials
Domaine :
Mots Clés :
Auteur : Abbes Beloufa, Driss Bouguenna, Nawel Kermas & Donat Josef As
Issn : 0361-5235 Eissn : vol : , Num : , pp :
Page web de l'auteur

2020
Prospective Analysis for a Long-Term Optimal Labor Force Planning in Algeria (PALOLFA)
La revue :
Domaine :
Mots Clés : Sustainability GDP Energy consumption Goal programming model Work force Environment
Auteur : MS. Guellil S. Ghouali O. Khedir D. Benabou H. Ayad SE. Sari-Hassoun
Issn : Eissn : vol : , Num : , pp :
Résume :
Objective programming models propose an explanatory framework to look at multi-criteria issues, including a couple of clashing targets. Genuine issues regularly include uncertain data, which makes weighted objective programming (WGP) models the most appealing decision. This article offers a WGP model that consolidates ideal resource distribution to simultaneously satisfy planned objectives on economic improvement, vitality utilization, workforce, and ozone-depleting substance (GHG) emanation decrease associated with key financial areas of Algeria. The model offers significant encounters to chiefs for fundamental arranging and adventure portions towards doable progression. We exhibit the authenticity and substantiality of the model through a numerical case.
Page web de l'auteur

2017
De la voix de l’Autre dans le discours de presse. Analyse linguistique de polyphonie dans les articles du Quotidien d’Oran
La revue : LAROS
Domaine : analyse du discours
Mots Clés : polyphonie, discours de presse, locuteur, énonciateur, point de vue.
Auteur : Mazot A.
Issn : Eissn : vol : , Num : 14, pp : 391-401
Page web de l'auteur

-0001
Modelisation and simulation of the transmission properties in Dimer Fibonacci Superlattices
La revue :
Domaine :
Mots Clés :
Auteur : Z. Aziz, Y. Sefir, R. Djelti and S. Bentata
Issn : Eissn : vol : , Num : , pp :
Page web de l'auteur

2014
اقتصاد المعرفة و النمو الاقتصادي في الجزائر
La revue : Revue Algérienne d'Economie et de Management
Domaine : Economie
Mots Clés : المعرفة، اقتصاد المعرفة، مؤشرات اقتصاد المعرفة، النمو الاقتصادي، الجزائر، دراسة قياسية
Auteur : Benounissa Leila
Issn : 2600-6197 Eissn : vol : 5, Num : 1, pp : 86-93
Résume :
ظرا للضرورة الملحة لاندماج كل الدول نحو اقتصاد جديد ازدادت فيه اهمية المعرفة و دورها الفعال في دفع عجلت التنمية واصبحت مقياسا للثروة اذا سمي هذا الاقتصاد "باقتصاد المعرفة" هذا ما يدفعنا للقول أن التحول من اقتصاد مقاد بواسطة الصناعة الى اقتصاد مدار بواسطة المعلومات و المعارف و يدفعنا للقول أن خلق الثروة لم يعد وفق سياق مادي، بل أصبح مبني على كل ما هو غير مادي وموجه خصوصا بواسطة المعرفة سنحاول في هذه الورقة معالجة أثر اقتصاد المعرفة و النمو الإقتصادي (دراسة حالة الجزائر) في البداية حاولنا معرفة أهم النقاط النظرية المتعلقة باقتصاد المعرفة، ثم ننتقل إلى نقطة مهمة أخرى وهي النظريات الرابطة بين اقتصاد المعرفة و النمو الاقتصادي. أما في الجانب التطبيقي فحاولنا من خلال العديد من المؤشرات والمعطيات الصادرة من مختلف الهيئات والمنظمات المتخصصة تصنيف الجزائر ضمن مجموعة من الدول. وقمنا بدراسة تحليلية ثم دراسة العلاقة بين أحد هذه المؤشرات و الناتج المحلي الإجمالي، لعدم توفر المعطيات لفترة زمنية طويلة اخذنا براءات الاختراع كمؤشر لاختبار السببية.
Page web de l'auteur

2018
Geometry of hypersurface γ×H2 in the geometry of Thurston F4
La revue : Beiträge zur Algebra und Geometrie / Contributions to Algebra and Geometry
Domaine : Géométrie différentielle
Mots Clés : Thurston geometry · Hypersurface · Minimal · Totally umbilical · Pseudo-parallel · Sasakian
Auteur : M. Belkhelfa, H. Boukhari, A. Hasni
Issn : Eissn : vol : 59, Num : 4, pp : 739–760
Résume :
The aim of this paper is to give the conditions for the hypersurface γ × H2 to be minimal in Thurston geometry F4. In addition we show that γ ×H2 is not totally umbilical neither pseudo-parallel nor Sasakian, where γ is a curve in R2 and H2 is hyperbolic plane.
Page web de l'auteur

-0001
Erbium/Ytterbium-Doped Waveguide Amplifier (EYDWA) for extended reach of Wavelength Division Multiplexing based free space optics system (WDM/FSO)
La revue : Journal of Optical Communications
Domaine :
Mots Clés :
Auteur : Attaouia. Bentahar, Malika. Kandouci, Samir. Ghouali
Issn : Eissn : vol : , Num : , pp :
Résume :
This work is focused to carry out the investigation of wavelength division multiplexing (WDM) approach on free space optical (FSO) transmission systems using Erbium Ytterbium Doped Waveguide Amplifier (EYDWA) integrated as post-or pre-amplifier for extending the reach to 30 Km for the cost-effective implementation of FSO system considering weather conditions. Furthermore, the performance of proposed FSO-wavelength division multiplexing (WDM) system is also evaluated on the effect of varying the FSO range and results are reported in terms of Q factor, BER, and eye diagrams. It has been found that, under clear rain the post-amplification was performed and was able to reach transmission distance over 27 Km, whereas, the FSO distance has been limited at 19.5 Km by using pre-amplification.
Page web de l'auteur

2018
Removal of Quinmerac by Diatomite and Modified Diatomite from Aqueous Solution
La revue : Surface Engineering and Applied Electrochemistry.
Domaine : Materials
Mots Clés : Adsorption. Isotherms. Quinmerac Diatomite activation
Auteur : K. Khaldi
Issn : 1068-3755 Eissn : vol : 54, Num : , pp : 194-202.
Résume :
Algerian aluminosilicate mineral natural diatomite and its modified variant were applied to remove quinmerac (QM)—a week acid herbicide from aqueous solutions. Then samples were investigated by the transmission electron microscopy, X-ray diffraction analysis, X-ray fluorescence and physical adsorption of gases. The adsorption experiments were carried out at ambient temperature in baths at different pH and the results showed that the amount of adsorbed QM increased at a higher pH, reaching a maximum at pH 2.5. The Langmuir model provided the best correlation of the experimental data for adsorption equilibrium. It was found that the modified diatomite exhibits a slightly better efficiency in the removal of QM than natural diatomite; this is why it could be considered to be an alternative material for removing a specific pollutant from environment.
Page web de l'auteur

2013
Contribution to the study of the flow resistance in a flume with artificial emergent vegetation
La revue : Larhyss journal
Domaine :
Mots Clés : emergent vegetation, density, Manning resistance coefficient, Drag
Auteur : Hamimed, A., Nehal, L., Benslimane, M., Khaldi, A
Issn : 1112-3680 Eissn : vol : , Num : 15, pp : 55-63
Résume :
Vegetation growing in the water along rivers has been the subject of several studies since it was recognized that it could have a significant impact on the water flow. It may increases resistance to flow and causes higher water levels. Also, it has affects on the turbulent structure such as the mean velocity profiles. For flow of water through emergent vegetation, previous investigations show different results. Hence, better knowledge on its impact on flow conditions is needed. The purpose of this paper is to investigate, how density and placement of emergent vegetation influence flow resistance, water depth and velocity profile. Experiments using artificial vegetation selected to simulate emergent vegetation were carried out in a laboratory flume instead of natural channel, and Manning’s n is used to denote the resistance coefficient. The results show large variations in the Manning resistance coefficient with depth of flow and vegetative density. Vegetation causes resistance to flow; it reduces flow velocities and increases water depth. For the vegetation densities considered, the presence of foliage significantly reduces the mean velocities. Also mean velocity profile is set by the vertical structure of the vegetative drag.
Page web de l'auteur

2018
Phytochemical screening and antibacterial effect of Zizyphus lotus methanolic extract against oral pathogenic bacteria.
La revue : Journal of Fundamental and Applied Sciences
Domaine : sciences de la nature et de la vie
Mots Clés : zizyphus lotus- methanolic extract-
Auteur : T.Aicha, B. Hamida, M.Boumediene
Issn : 1112-9867 Eissn : vol : 10, Num : (2), pp : 252-266
Résume :
The aim of this in vitro study was to assess the antibacterial effect of the methanolic extract obtained from the roots of Zizyphus lotus(communally Sedra) collected in Mascara on analysis which revealing 433,65μg EGA / mg dm ofcollected from the oral cavity (10 students) against bacteria responsible of oral pathologies, isolated from students aged from 20 to 28 years. Chemical qualitative analysis of this extract revealed the presence of polyphenols, flavonoids and tannins confirmed by a quantitative analysis polyphenols, 247,87μg EQ / mg dm of flavonoids and 167.05 μg ECT/ mg dm of tannins.microbiological analysis of samples bacterial groups (streptococci, staphylococci, lactobacilli and enterobacteria).Extract of Zizyphus lotus tested on agar medium and microdilution method showed an important inhibition diameter of 40 mm respectively towards Lactobacillus sp.
Page web de l'auteur

2020
Towards cloud transport using IP-multiservices access network (MSAN)
La revue : Journal of Optical Communications
Domaine :
Mots Clés : ACWKC; C300M shelf; CICK; cloud; GUSQ; IP-MSAN; optical infrastructures
Auteur : Amina Elbatoul. Dinar Samir. Ghouali Rachid. Merzougui Attaouia. Bentahar Boualem. Merabet
Issn : 2191-6322 Eissn : vol : , Num : , pp :
Page web de l'auteur

-0001
Effect of Coulomb interactions and Hartree-Fock exchange on structural, elastic, optoelectronic and magnetic properties of Co 2 MnSi Heusler: A comparative study
La revue : Journal of Magnetism and Magnetic Materials
Domaine :
Mots Clés :
Auteur : T. Lantri, S. Bentata, B. Bouadjemi, W. Benstaali, B. Bouhafs, A. Abbad, A. Zitouni
Issn : Eissn : vol : , Num : , pp :
Page web de l'auteur

2017
: أثر صدمات أسعار النفط على الميزانية العامة في الجزائر: دراسة قياسية
La revue : المجلة الجزائرية للاقتصاد و الادارة
Domaine : économie
Mots Clés : صدمات أسعار النفط، الانفاق الحكومي، اختبار سببية قرانجر
Auteur : بن دحمان أمينة، ركراك مونية، عمراني فاطمة
Issn : 2170-0311 Eissn : 2600-6197 vol : , Num : 9, pp : 173-182
Résume :
الدافع من وراء هذه الدراسة هو البحث في طبيعة تأثير تقلبات أسعار النفط على السياسة المالية في البلاد, باستخدام منهجية سببية قرانجر وخلال الفترة الزمنية 1970-2014، من خلال تحديد اتجاه السببية بين تقلبات أسعار النفط الخام ( سعر النفط الحقيقي، الصدمات الموجبة لأسعار النفط، الصدمات السالبة لأسعار النفط) و أهم المتغيرات الرئيسية للسياسة المالية في الجزائر ( الانفاق الحكومي، نفقات التسيير و نفقات التجهيز). و من خلال نتائج الدراسة القياسية تم ايجاد علاقة سببية تتجه من أسعار النفط نحو مؤشرات الميزانية العامة في البلد، كل هذا يشير بقوة الى ضرورة تنويع الاقتصاد للحد من تأثير تقلبات أسعار النفط على عائدات الحكومة، ولا بد من الحكومة اشراك مبدأ التخطيط في الانفاق العام في البلاد.
Page web de l'auteur

2019
Full control of quadrotor aerial robot using fractional-order FOPID
La revue : Iranian Journal of Science and Technology, Transactions of Electrical Engineering
Domaine : Control
Mots Clés : VTOL-UAV Fractional-order control Attitude control Modified Black–Nichols FOPID Quadrotor
Auteur : Redouane Ayad, Wahid Nouibat, Mehdi Zareb, Yasmina Bestaoui Sebanne
Issn : 2228-6179 Eissn : 2364-1827 vol : 43, Num : 1, pp : 349-360
Résume :
This article presents a new design of fractional order ???????????? ???????? , for the full control of quadrotor (attitude and position)using a modified Black–Nichols method. First, we use single-input–single-output approach to design fractional-order ???????????? ???????? controllers for each position and attitude component. After that, we employ the same ???????????? ???????? controllers in the multiple-input–multiple-output model of quadrotor to test their performance. It is shown that we can improve the robustness and performance of the control significantly. Fractional-order modeling and control toolbox is used with Simulink model of quadrotor to prove and validate the performance of our controllers considering several scenarios.
Page web de l'auteur

2016
KÄHLERIAN STRUCTURES AND D-HOMOTHETIC BI-WARPING
La revue : Journal of Geometry and Symmetry in Physics
Domaine : Mathématiques
Mots Clés : Kählerian structures, product manifolds, Sasakian structures
Auteur : BELDJILALI gherici, BELKHELFA mohamed.
Issn : 1312-5192 Eissn : vol : 42, Num : 1, pp : 1-13
Résume :
We introduce the notion of D-homothetic bi-warping and starting from a Sasakian manifold M, we construct a family of Kählerian structures on the product R × M. After, we investigate conditions on the product of a cosymplectic or Kenmotsu manifold and the real line to be a family of conformal Kähler manifolds. We construct several examples.
Page web de l'auteur

2019
وكالات الاستخدام الخاصة -دراسة للنظام القانوني للهيئات الخاصة للتنصيب في الجزائر
La revue :
Domaine : القانون
Mots Clés : سوق الشغل- مرفق التنصيب- الإتفاقية الدولية رقم 181 - عروض العمل- طلبات العمل-ضبط سوق العمل- الوكالة الوطنية للتشغيل- الهيئات الخاصة للتنصيب.
Auteur :
Issn : Eissn : 2600-6952 vol : 33, Num : 04, pp : 121-153
Résume :
لم يمانع المشرع الجزائري من فتح الوساطة في التشغيل لأشخاص القانون الخاص طبيعيين ومعنويين ،لكنه حصر مشاركتهم في تسجيل العمال،إنتقائهم،وتقديمهم للهيئات المستخدمة قصد تنصيبهم ومن دون الإخلال بالإعتراف لهم بالبحث عن عروض العمل وجمعها وتوزيعها وهو ما يعني أنّه حصر مهمتهم في الوساطة في التنصيب، ما جعله يسمي الأشخاص التي تتولى هذه المهمة بالهيئات الخاصة للتنصيب بدل وكالات الإستخدام الخاصة وفق ما حددته منظمة العمل الدولية. تتناول الورقة البحتية المقدّمة تحديدا لماهية وكالات الإستخدام الخاصة والشكل الذي اختار المشرع الجزائري أن تظهر به أو ما يعرف بهيئات التنصيب الخاصة كاستجابة لتحرير الوساطة في التشغيل،من خلال إعادة النظر في آليات ضبط سوق العمل وتنظيمه ،لتنتقل الوساطة في التشغيل من الإحتكار الكلي للوكالة الوطنية للتشغيل إلى المشاركة المقيّدة لوكالات الإستخدام الخاصة. ABSTRACT The Algerian legislator did not object to the opening of employment mediation to private law persons; however, he limited their participation in the registration, selection and submission of workers to the bodies used for their inauguration without prejudice to their recognition of the search, collection and distribution of work. , which means that inventory their mission on mediation at the inauguration, who undertake this task to the private bodies for installation, instead of private employment agencies as defined by the International Labor Organization. This paper deals with the specific nature of the private employment agencies and the form in which the Algerian legislator chose to be represented by the so-called private instigators, with the aim of liberalizing employment mediation, by revising the mechanisms of regulating and regulating the labor market, in order to restrict participation of private use agencies
Page web de l'auteur

2019
محاربة تقليد العلامات في ضوء قانون العلامات الجزائري بين العقوبات الردعية و الإجراءات التحفظية
La revue : مجلة البحوث القانونية والاقتصادية
Domaine : القانون
Mots Clés : العلامة. التقليد ، الردع، الحجز. الوصف
Auteur : بن أمينة مصطفى
Issn : Eissn : vol : 2, Num : 4, pp : 44-53
Résume :
يسعى المشرع الجزائري في أحكام الأمر رقم 03-06 المتعلق بالعلامات إلى توفير أقصى درجات الحماية القانونية للعلامات ويظهر هذا في تجريمه لفعل تقليد العلامة و استعمالها في مجال المنافسة دون إذن أو ترخيص من مالكها ، إضافة إلى تخصيص مجموعة من الإجراءات التحفظية التي تسبق أو تتزامن مع دعوى الموضوع. إن الاجراءات التحفظية التي جاء بها المشرع الجزائري في قانون العلامات تسعى عموما لوقف عملية التقليد و تقليص حجم الضرر الذي يصيب مالك العلامة ، كما أنها تمثل تعاملا تشريعيا سريعا مع ظاهرة التقليد التي أصبحت صورها تتطور بشكل متسارع . The Algerian legislator seeks the provisions of Order No. 03-06 on marks to provide the maximum legal protection for marks. This is manifested in the criminalization of the trademark tradition and its use in the field of competition without the authorization or authorization of the owner, in addition to the allocation of a set of precautionary measures preceding or coinciding The precautionary measures introduced by the Algerian legislator in the Trademark Law generally seek to stop the process of imitation and reduce the scale of damage to the owner of the mark, and represent a quick legislative deal with the phenomenon of tradition, whose images are rapidly evolving
Page web de l'auteur

2019
EFFECT OF SALINITY ON THE PHYSIOLOGICAL BEHAVIOR OF THE OLIVE TREE (VARIETY SIGOISE)
La revue : Journal of Fundamental and Applied Sciences
Domaine : production vegetale, arboriculture, olivier, salinite
Mots Clés : Salinity; olive tree; salt stress; proline; chlorophyll.
Auteur : B. Sid Ahmed, B. Fouzia, A. Adda, G. Farid
Issn : 1112-9867 Eissn : ******* vol : 11, Num : 1, pp : 525-538
Résume :
Salinity is a major problem directly affecting the ecological balance and the development of agriculture in the Mediterranean basin, particularly North Africa. This phenomenon is considered as the most important abiotic factor limiting crops growth and productivity, degrading and polluting soils in arid and semi-arid. In order to study the influence of salinity, on the physiological parameters and to assess the potential of adaptation of the olive tree in a saline environment, three parcels containing the Sigoise variety and subject to different degrees of salinity were selected: Parcel 1 (non-saline); Parcel 2 (saline); Parcel 3 (very saline). Under a saline constraint, the results showed two contrasting tendencies, an intense increase in the content of proline, sodium (Na+) and chlorophyll (b), while water content, potassium and chlorophyll (a) decreased strongly with increasing salinity.
Page web de l'auteur

2014
Backstepping control with integral action of PMSM integrated according to the MRAS observer
La revue : IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
Domaine : Electrotechnic
Mots Clés : Backstepping control, Lyapunov theorem, Integral action, Permanent Magnet Synchronous Motor (PMSM), Model Reference Adaptive System (MRAS), observer
Auteur : A. Larbaoui, B. Belabbes, A. Meroufel, A. Tahour, and D. Bouguenna*
Issn : 2320-3331 Eissn : vol : 9, Num : 4, pp : 59-68
Résume :
The work developed in this article, has aims to control design law is based on Backstepping method to ensure the servo-control of the permanent magnet synchronous motors (PMSM). The slow convergence of adaptation can result, in some cases; irreversible instabilization loop, especially in the presence of nonlinearity and/or couplings. Hence, the Backstepping method coupled with introduction of integral actions is an alternative choice. Moreover, the Backstepping theory is a recursive design methodology that makes use of the Lyapunov stability theory. Strong properties of overall and asymptotic stability can be achieved. The second part of this work is a direct application of the control proposed to associate an observer, is the Model Reference Adaptive System (MRAS) to observe the position and the rotor speed of the MRAS. Furthermore, the simulation under the Matlab/Simulink software allows highlighting the performance of the control strategy adopted
Page web de l'auteur

2009
Web Services Composition Applying MDA.
La revue : 2nd Conférence Internationale sur l'Informatique et ses Applications (CIIA'09), Saida, Algeria
Domaine : web service composition
Mots Clés : Web Service Composition; MDA
Auteur : Y.Hachemi, B.Malki, D.Amar Bensaber
Issn : Eissn : vol : 02, Num : , pp :
Résume :
Currently, Web services are available on Internet in a simple and easy way to use. However, a single service can not respond to a predetermined request by user. Thus, it is necessary to compose services, ie, organize them in a manner to achieve the goal automatically. The semantic web services increases the descriptions of web services using semantic annotations (eg ontology). There are different approaches to express the semantic aspect as OWL-S, WSMO, WSDL-S and a recent W3C recommendation SAWSDL (Semantic Annotations for WSDL and XML Schema). To address complexity, scalability and heterogeneity problems of Web Systems, the OMG has proposed the model driven approach MDA based on the concepts of models, metamodels and transformations. The method describes a process that guides the developer through various phases, starting with the models, and ending with a new compound that can be deployed and published.
Page web de l'auteur

2020
NTP Server Clock Adjustment with Chrony
La revue :
Domaine :
Mots Clés :
Auteur : Amina Elbatoul. Dinar Boualem. Merabet Samir. Ghouali
Issn : Eissn : vol : , Num : , pp :
Résume :
As of now, all servers have an equipment or programming clock to which reference is made to time stamp records, exchanges, messages, and so forth. This clock, albeit structured around a quartz oscillator, floats like any customary watch, which implies this common watch cannot a match to such created machines that are networked and share common resources like file systems. For example, UNIX is a development tool which makes command, based on its work on comparing file modification dates. Similarly, the correlation of log messages from several systems becomes very difficult if they are not at the same time. In this article, we will concentrate on this topic by designing a server utilizing the NTP convention since the primary “focus” of the NTP usage is UNIX frameworks, and to be more explicit, we will see the management of the NTP server with the Chrony tool.
Page web de l'auteur

2019
3-dimensional Golden almost contact metric manifolds
La revue : Palestine Journal of Mathematics
Domaine : Mathématiques
Mots Clés : Golden manifold; Almost contact metric manifold.
Auteur : Beldjilali gherici
Issn : 2219-5688 Eissn : vol : 9, Num : 1, pp : 594-603
Résume :
In this work, we have dealt with almost contact metric structures induced by Golden structures and simultaneously as one can be obtained from the other, and provided the following results besides some side ones. Various examples are discussed.
Page web de l'auteur

2015
Le Rôle De La Responsabilité Sociale Des Entreprises Dans La Réalisation De La Performance : Etude Comparative De Sontrach Avec Des Leaders Mondiaux
La revue : مجلة دراسات و أبحاث
Domaine : la responsabilité sociale des entreprises.
Mots Clés : La responsabilité sociale des entreprises, partie prenantes, le système de management , Sonatrach ,performance globale , système de pilotage .
Auteur : Assia Hebri.
Issn : 2253-0363 Eissn : vol : Volume 6, , Num : Numéro 16, , pp : Pages 464-479.
Résume :
Résumé : L objectif de cette étude est de mettre l' accent sur les principes clés des bonnes pratiques de la responsabilité sociale des entreprises et leurs impacts sur la réalisation de sa performances , dans un environnement interne et externe . La mise en place d’un système de management intégré HSE pour le Groupe Sonatrach constitue une priorité absolue du management à différents niveaux. Il s’agit par cette action de mettre en œuvre les engagements de la politique HSE du Groupe. Le processus, déjà entamé, permettra une meilleure évaluation des Performances HSE du Groupe ; et un niveau de comparaison universel .
Page web de l'auteur

2016
Experimental and Theoretical Study of Tetracaine-Hydrochloride β-Cyclodextrin Complexation
La revue : Journal of Materials and Environmental Sciences
Domaine : Materials and Environmental Sciences
Mots Clés : Complexation, Tetracaine hydrochloride, 1H-NMR, β-Cyclodextrin, UV-Visible Spectrophotometry, quantum calculations
Auteur : M.A. Nouairi, T. Fergoug, M. Azayez, H. Boujoures, C. Zelmat, Y.Bouhadda
Issn : ISSN: 2028-2508 Eissn : vol : Volume 8, Num : issue 5, pp : 1589-1598
Résume :
The complexation of the drug Tetracaine-hydrochloride (TC,HCl) with β- cyclodextrin (β-CD) was studied by means of UV-Visible Spectrophotometry and positive electrospray ionization mass spectrometry ESI+/MS and 1D 1H-NMR. The experimental results confirm that an inclusion complex was formed between the drug and β-CD and that the cationic end of the guest molecule is inserted into β-CD cavity. Quantum semi-empirical calculations were performed to determine the best inclusion pathway between the cationic Tetracaine and the β-CD. Potential energy scan showed that the most stable inclusion complex is obtained when the guest molecule is inserted with its ammonium group into the cavity of β-CD from its wider rim in accordance to experimental results.
Page web de l'auteur

1 2 3 4 5 6 7 8 9 10