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The regional set "Saoura", immanent to the Algerian Sahara, is characterized by the dune aspect, with here and there a sporadic plant formation adapted to the harsh climate. Despite the constraints, human settlements have been established, the oasis of Bechar can be used as an example thereof. Like its peers, the oasis of Bechar reflects an ingenious architecture that accommodates the social and climatic context inherent in this regional set. Indeed, "the ksar" (Habitat), this genius of the place, responded to the socio-cultural needs as for the requirements imposed by their unforgiving context. This presentation lasted for a long time until the colonial order completely changed the logic of spatial production. Henceforth, new emblems referring to the French jurisdiction were integrated into the composition. Relatively, in a short period of time, the old city underwent series of changes from which the modern city gradually emerged. Today, this heterogeneous expression has been the subject of many criticisms of stylistic wandering in relation to the context. This article focuses on the analysis of architectural forms during the colonial period between 1900 and 1940 (considered as a transitional phase between traditional architecture and post-independence architecture), in the Saoura region, precisely in Bechar and Kenadsa. For this purpose, we will use a morphological approach inspired by the work of C. Norbert Schulz, who revealed an architecture called "neo-Moorish" or "Arabism". This research allows us to lay the groundwork for the debate on the current architectural production in the city of Bechar.

Natural light has lost its prime importance due to the development and growth in the use of artificial light over the past century,this dearth of natural light in educational systems causes a significant problem in educational spaces, which makes an impact negative on human behaviour, which contributes to a decline in educational performance. In the absence of research on the subject, it is necessary to explore the influence of natural light, on the visual comfort of users in order to improve the quality of space in reading areas.The aim of the subject, is the necessity to explore the influence of natural light, on the visual comfort of users in order to improve the quality of space in reading areas. This research work focuses on the region of Oum El Bouaghi characterized by a hot and dry semi-arid climate, uses the Post OccupationalEvaluation(POE)based on a questionnaire, with 70 participants to study the qualities of the visual comfort of the reading room of the university library. The results collected indicate the level of luminosity in the studied area is insufficient with unsatisfactory conditions leading users to use artificial lighting during the majority of the day throughout the year. Although glare, contrast and shadow effect have no direct influence on reading activity, also the role of aperture is totally ignored, which gives a gloomy and boring impression reading by analysing the Independent and dependent variables it has been stated that although all independent variables affect dependent variable. Therefore, this contribution has revealed significant results that could be used by managers in their mission to develop the natural lighting system in university library reading rooms.