Advances in communication and data transmission are significantly improving the use of online applications and communication with wireless devices, achieving real-time interaction with remote devices, in this environment, 5G technology allows a very great technological advance in communication means; the study aimed to find out the level of knowledge that local Internet service providers and mobile operators have of this technology, as well as the degree of its implementation and use. 5G technology represents a set of improvements over current 3G and 4G communication technologies, such as greater bandwidth, low latency, short delays, low energy consumption, enabling the implementation of smart cities, home automation and business automation, significantly improving mobile and fixed communication, all of which, combined with the use of optical fiber, will completely change the way we use the internet as a means of communication.

Kant is convinced of the possibility of a peaceful coexistence between individuals and people. In case freedom rises to be judicial, its formalism présumés three a priori conditions to each political organization. They are freedom, equality and independence. Those three a priori conditions highlight the rationality of the reports among people who are determined to live together of the good of all. It’s because they are rational that they are submitted to that venture. It’s because they need the same thing that they are engaged in the achievement of the common purposes through the rule called contract. The later facilitates a peaceful life and wise to be between individuals and peoples.

Introduction: The Pathological Anatomy laboratory presents risks related to the handling of potentially contaminated surgical, biopsy or cytological samples, as well as the use of dangerous chemicals. The objective of our study is to evaluate the biological and chemical risks incurred by the staff of the PCR laboratory of the Ibn Rochd university hospital center (CHU) in Casablanca and to recommend prevention and protection measures against these risks. Methods: We conducted a descriptive cross-sectional study over a period of six months, involving all laboratory staff. Our study is based on the use of detailed questionnaires, interviews and observations of working conditions. Results: The evaluation revealed several failures: insufficient training of staff in matters of hygiene and safety in the workplace, medical monitoring is not systematically respected, accidents linked to exposure to biological liquids and products chemicals are relatively common, a lack of maintenance of collective protective equipment such as extractor hoods, a lack of protective glasses and compliant respiratory masks, inappropriate storage of dangerous chemicals, lack of display of certain instructions safety and insufficient compliance with waste disposal requirements. Conclusion: It is imperative to put in place an action plan aimed at preventing and protecting laboratory personnel against these risks.

Cooperation is the action of participating in a common work, the collaboration between actors, especially States, for a common goal. It is a policy of understanding and cultural, economic or scientific exchanges between States, and especially in the context of international relations of development aid to less developed nations from developed countries. North-South cooperation, which is the most traditional type of cooperation, occurs when a developed country provides economic or other support to a less developed country, particularly in the context of development programmes. This cooperation is valued differently because of its effectiveness. Often marked by hegemonic considerations, North-South cooperation has a lead in the wing in the current geopolitical context where, in Africa, new players are emerging. These partners loosen financial constraints and conditionalities, but they also increase the risks of debt reduction and weak coordination of development policies. It is necessary to distinguish between the geopolitical stakes of the multipolar world and the new actors of cooperation in Africa in order to explore the perspectives that open to Africa in its cooperation with the world powers. The aim is to empower Africa with regard to predatory cooperation which, instead of emancipating it, plunges it further into dependence. Africa must define its priorities in all forms of cooperation, whether traditional or new.

The Tassaout watershed (upstream Moulay Youssef dam) belongs to a semi-arid climatic context, characterized by limited precipitation. In addition to the scarcity and uneven distribution of water resources, under the shadow of current climate change, the region is subject to increasing demand for water resources. Low water is a seasonal event that can recur every year. Annual variations in precipitation can impact the severity of low water. This article attempts to contribute to the study of the severity and seasonality of low water levels based on the water deficit recorded during these periods. For this, we used the SPA (Sequent Peak Algorithm) method based on the amount of water deficit. The threshold for the appearance of low water was determined from the Q75 indicator extracted from the classified flow curve based on the daily flow data measured at the two stations; of Ait Tamlil and Tamsemat, which covers the period from 1978 to 2016.

The research discussed the concept of aesthetic experience and the opinions of philosophers about it. It focused on the philosopher John Dewey's concept in its interpretation, and the relationship of aesthetic experience in the artist's creation of symbolic connotations in artistic printmaking.، The research problem was summarized in the following question: What is the relationship of aesthetic experience in the innovation of symbolic connotations in printmaking design? This research aims to identify the concept of aesthetic experience and the problem of opinions about it, as well as identifying what symbolic connotations are. It also aims to reveal how aesthetic experience is related in the creation of symbolic connotations in printmaking design. The research hypothesized that aesthetic experience might contribute to the creation of symbolic connotations in printmaking design. The most important results were summarized in the importance of the ordinary experiences that the individual goes through, which are consistently associated with the aesthetic experience. and that aesthetic experience has an important role in creating symbolic connotations in printmaking design. The study also found that all kinds of symbols are rich sources for the artist through which he expresses the outcome of his experiences in creative printmaking designs and that the artistic expression using symbols emphasizes John Dewey's philosophy of the arts, which says that art does not depend on simulation. The research recommends focusing on studies in the field of aesthetic experience and its importance for the creative artist and the recipient connoisseur of art, concentrating on the development and refinement of the aesthetic sense of the emerging generation, and focusing on gaining aesthetic experience to perceive the manifestations of beauty in the surrounding environment and other experiences in it. The research also recommends paying attention to studies related to symbolic connotations because of their role in developing innovation for the artist in the implementation of printmaking design.

The aim of this study was the determination of phenotypic and zootechnical characteristics of the caprine breed slaughtered for butchery in Abidjan city. Thus, a study was done on 120 caprine at the Port-Bouët slaughterhouse in the city of Abidjan. Then, the breed, coat colour, age, presence or not of horns, goatee and pendants, as well as the measurements, height at the withers and thoracic perimeter were determined. Descriptive statistics of these variables were produced. Followed by a Chi square test for qualitative variables. Furthermore, an ANOVA was performed for the quantitative variables. The results show that caprine Sahelian breed (94.17%) are more slaughtered than those of the Djallonké breed (5.83%). Coat colours commonly encountered are black-brown and black-piebald (28.57%) for Djallonké breed and brown-piebald (50.44%) for the Sahelian breed. Caprine breed over four years old age (73.33%) are more slaughtered than others. The tallest caprine on legs are from Sahelian breed (78.67 cm), males (80.98 cm) and those from 3 to 4 years old age (78.18 cm). The thoracic perimeter was 75.34 cm in caprine of the Sahelian breed, 77.54 cm for males and 76.35 cm for caprine breed of 3 to 4 years old age. The height at the withers and the thoracic perimeter are influenced by breed or sex (p < 0.05). In conclusion, the caprine breed slaughtered at the Port-Bouët slaughterhouse showed various breeds, sex, coat colors and ages.

In this article, we present an electrical engineering project that is instructive and complex because it calls on several electrical engineering disciplines, namely: electrical engineering, power electronics, harmonic pollution, filtering, etc. This is a presentation of the study of a DC micro-link carried out as part of a graduate thesis in electrical engineering at the Higher Institute of Applied Techniques of Kolwezi (ISTA/KOLWEZI). The subject is sufficiently ambitious to illustrate a large number of electrical engineering disciplines and to allow an interesting theoretical study. The detailed study of the assembly is presented in this document, together with its overall diagram.

The degradation followed by the disappearance of fertile land in a context of climate change affects agricultural production in the world and in sub-Saharan Africa. In Côte d’Ivoire, soil degradation and scarcity linked to demographic pressure lead the farmers of Bouaflé, in the center-west region of Côte d’Ivoire, to seek new cultivable land, in particular hydromorphic land in the lowlands. bottoms and banks of river tributaries. To this end, a study on the morphopedological and physicochemical characterization was conducted in order to determine the agronomic potential of the soils of the lower slope of a toposequence of the watershed of the Bandama River (Marahoué). On the bottom of the slope of the longest open toposequence on a 1000 m strip, three soil pits were opened under three vegetation covers characteristic of this topographic segment consisting successively of the top of the steepest slope to the river (lowest level of slope), wooded savannah, grassy savannah and prairie leading to the river. The profiles of these pits were described and sampled in the 0 – 20 cm and 20 – 40 cm layers and a composite sample was made and then analyzed in the laboratory. The types of soil encountered in the lower slope are impoverished ferralitic soils (Arenosols) and hydromorphic soils (Gleysols). The morphological characteristics of these soils offer an average agricultural potential while the low levels of assimilable phosphorus and the low cation exchange capacity (CEC) constitute the major chemical constraints for agriculture.

The evolution of information and communication technologies and their integration in almost all sectors of the economy (telecommunications, industry, transport, energy, trade, etc.) has made it possible to improve management and decision-making in real time in these sectors. In the industrial sector, and particularly in the electro-energy sector, information and communication technologies offer advantages in terms of speed, efficiency, cost-effectiveness, etc., as smart grids allow a large number of connected objects to interact, communicate and collaborate. On the other hand, these technological advances and the increase in Internet connectivity of electric power companies have led to an increase in the number of access points, making them more vulnerable to cyber-attacks. As a result, IT security for power grids is essential. The objective of this paper is to highlight, based on the extensive literature review and critical analyses, the cybersecurity issues in Smart Grids. The vulnerabilities of electrical infrastructures and the different solutions or systems implemented by researchers to address the problems of cyber-attacks have been presented. Machine learning and artificial intelligence techniques will be used in the following research to detect and block attacks on an electrical infrastructure in order to protect the electrical network from cyber-attacks.