Photovoltaic energy is the youngest of the renewable energies, it has the advantage of being non-polluting, flexible and reliable. for this reason we realized a system which tracks the sun's course from multiple angles (solar tracker ) So that it completely irradiates the panel in order to improve the efficiency of the solar panels by 30 to 40%

Our memory has been made for the calculation principle of electric field in the great distances of oil. The first step of this work to be made it is the model of simulation that établait and calculated by the comsol software 3.5a 2D to compare both cases studies: cas1 (80 mm of diameter) and cas2 (20 mm of diameter) through this change we compare the results of calculations of electric field and the safety margin. Finally we find that the good location (good financial situation) this pre...

Cette étude fait partie de notre projet de recherche sociolinguistique qui se concentre sur la question des pratiques langagières, en se concentrant particulièrement sur le cas de « rana sahranin » de la chaîne El Biled TV. Notre travail se divise en deux parties distinctes. Tout d'abord, nous exposons la situation linguistique de l'Algérie, qui se distingue par la présence de diverses langues utilisées. Ces phénomènes se manifestent dans différents domaines tels que les publicités, les...

This thesis presents the development of a portable cardiorespiratory monitoring system combining electrocardiography (ECG) and photoplethysmography (PPG). The objective is to offer a continuous, real-time monitoring solution for vital parameters such as heart rate, QT interval, and pulse transit time (PTT) to improve the detection of cardiac and respiratory disorders. The system uses biomedical sensors and an Arduino Nano microcontroller to provide a complete analysis of cardiac and vasc...

This study aims to examine the impact of electronic Customer Relationship Management (e-CRM) on customer loyalty through multiple mediators such as co- creation value, customer experience, service quality, customer satisfaction, and word of mouth, as well as the direct effect among the study variables. To achieve this, a mixed- methods approach was employed, incorporating both qualitative and quantitative. Qualitative data was gathered through Semi-structured interviews with 15 cus...

تهدف هذه الدراسة الى تقييم فعالية المؤسسات المصغرة في الاقتصاد الجزائري وهذا من خلال ادراج هذه المؤسسات باختلاف نشاطها الاقتصادي كمتغيرات مستقلة ضمن نماذج قياسية تتضمن محددات المتغيرات الاقتصادية الكلية باستخدام بيانات سنوية خلال الفترة 2000-2023. بينت النتائج المتحصل عليها الخاصة بكل من نموذج تصحيح الخطأ الموجه (VECM) ونموذج الانحدار الذاتي ذي الفجوات الزمنية (ARDL) مساهمة المؤسسات المصغرة في المدى الطويل في التسريع من وتيرة النمو الاقتصادي والحد من الفقر والبطالة، وأوضحت نتائج نموذج ...

Through this research, I would like to work on the blogs “The Sand of the Water” and “The Paths of the Iron Gates” by “Wassini Al- Araj” in order to enter their imagined world and determine the extent to which the relationship of history is employed in the fictional text and how the contemporary Algerian novel works in the narrative achievement, its aspects and what it is. The intellectual background of the novelist “Wassini Al-Araj” and the nature of his use of history