Abstract Oran road network is taken, daily, by thousands of vehicles, some of which are TDG (Transportation of Dangerous Materials). The latter have the characteristic of transporting substances may present a hazard to people, property or to the environment. Oran a city in Algeria, developing over the years, joined its industrial area which has urbanized ignoring the associated risks constraints. Thus, its fuel storage center and... Oran road network is taken, daily, by thousands of vehicles, some of which are TDG (Transportation of Dangerous Materials). The latter have the characteristic of transporting substances may present a hazard to people, property or to the environment. Oran a city in Algeria, developing over the years, joined its industrial area which has urbanized ignoring the associated risks constraints. Thus, its fuel storage center and distribution and its various service stations met the city. Therefore, this random extension, gave TDG roads “penetrating” the city. This town characterized by narrow and stagnant roads, and an increase in traffic lives recrudescent accidental events of traffic. The main objective of the current study is to design and develop a multi-criteria decision support system to identify the least risky paths according to a set of criteria assessed by experts in the field. In this context, a more specific objective is to provide a web application containing the developed decision support system and allowing carriers to check the system from their starting points. Read More Read Less

Abstract The use of every drop of water from the rain will be only solution to the water problem in the urban areas like metropolitan cities or cities with large population. Water from the rain can be very easily collected through apartments, housing societies and private homes in the cities. The Rivers in cities are already polluted and not useful for drinking. The authors... The use of every drop of water from the rain will be only solution to the water problem in the urban areas like metropolitan cities or cities with large population. Water from the rain can be very easily collected through apartments, housing societies and private homes in the cities. The Rivers in cities are already polluted and not useful for drinking. The authors have studied the means of water harvesting in the developed nations and have developed the model to implement the same in our country. The need of the water harvesting and its implementation at large level from Government, local bodies and awareness from all the people will be only possible to preserve the water falling from the sky in the form of rain. Read More Read Less

Abstract Classification of equipment is the main method in group maintenance model for automatic production line. Equipment with different importance should be assigned different maintenance strategies. But method of division importance of equipment is not mature, most of the literature only considered downtime. In order to maximize the production rate, we simulate the actual production line, consider the layout, production time, buffer condition of... Classification of equipment is the main method in group maintenance model for automatic production line. Equipment with different importance should be assigned different maintenance strategies. But method of division importance of equipment is not mature, most of the literature only considered downtime. In order to maximize the production rate, we simulate the actual production line, consider the layout, production time, buffer condition of the production line, find the relationship between production rate and failure rate, repair rate by uniform design method. Find the failure rate and repair rate indicter which have a great impact on the production rate with stepwise regression method and find critical equipment, take different maintenance strategies for equipment which have different importance. Finally verify the correctness of the model. This paper simulates the actual situation of the production line, has relatively few subjectivity and a certain reference value for the maintenance policy of production line. Read More Read Less