Today, tourism is not only a tool of entertainment for people; it has become a critical factor in the development process of various sectors. Many countries, including Algeria, are now building towards a strategic growth in all the concerned sectors such as: economic, political, social and cultural. In other words, tourism servers as a cultural spread, more than that, it is a mechanism that generates further benefits for the state by attracting tourist and visitors to local and international tourism. Tebessa, a city that unfortunately is not qualified to compete with major touristic cities in the country and now more than ever, it is required to step up to a touristic state. To get it on board with the travel industry, the city has to engage in more authentic implementation of the strategic plans and targets set on theoretical plans through modern techniques such as "SWOT analysis. Relatively, tourism is a vital economic alternative to deal with the obstacles hindering the productivity and effects of its absence. It also serves as income budget to support the operations of enhancing the touristic attractions, technologies including the geographical information system (GIS) and creating as many modernised sites as possible.

This work is part of a new approach to the study of the planning of public transport in order to optimize accessibility by these means of travel in the Greater Skikda (Northeast Algerian). Isochronal indicators are used to measure spatial-temporal accessibility, an approach based on the use of new information technologies as a tool for analysis, such as Geographic Information Systems (GIS). Since the 1970s, the city of Skikda has experienced an urban dynamic, mainly due to high population growth, rural exodus and a number of other social, economic factors. This rapid urbanization has plunged the city into a multidimensional crisis, generating a multitude of problems: urban congestion, transport problem, environmental degradation, poor space management, etc. In addition to these factors, the centralization of commercial and administrative activities in the city, generate a lot of mobility by creating a large daily flow of travel. In this context public transit by bus should be the appropriate solution to facilitate mobility in the city and minimize road congestion. In this paper we analyzed the level of spatial-temporal accessibility by public transport and drew up a mapping that could be an effective tool for assisting local actors in decision-making in organizing the transport network and optimizing its performance.

The Souf is part of the northern North Eastern Sahara. Its geographical configuration characterized by a flat topography and absence of natural outlet. Formerly, it located in the Eastern Erg of the caravan routes which has prevented the emergence of major cities. The voluntarism of Saharan integration and the reconsideration of territorial grid have led to massive unorganized urbanization; the latter is responsible for serious problems related to the urban environment; the degradation of architectural heritage and cultural heritage; soil degradation and water. Changes in land use and land cover are critical elements of contemporary strategies for natural resource management, and for monitoring environmental change. In this context, a GIS derived from the application stages of geospatial technologies and remote sensing methodology from 1972 to 2016. This article attempts to analyze the spatial consequences of these policies on morphological transformation, and the changes imposed on this space. The change detection analysis indicates that the built-up area was increased by almost 30 times for the northern conurbation where the merger took place between Guemar and Taghzout, towards the south of the valley the built-up area was increased by more of 108 times or agglomerations Kouinine; El Oued; El Bayadha and Robbah eventually join. In this context, the predominance of traditional culture has declined as a result of market gardening, where the area occupied by the pivots has increased from 122 square kilometers to more than 317 square kilometers between 2005 and 2016.