Virtualisasi Monitoring Server FreeNAS dan MailServer Menggunakan OpenNMS

Monitoring sebuah jaringan memiliki peranan yang sangat vital. Dalam system monitoring sebuah jaringan, informasi secara rill dan terbaru dalam sebuah jaringan akan terkumpul. Selain itu pengelola dapat mengetahui performansi jaringan yang sedang berjalan. Server di dalam suatu jaringan ini memiliki 3 bagian. Pertama adalah membangun file storage menggunakan server FreeNAS, yang ke dua adalah membangun MailServer menggunakan squaremail yang berjalan pada Ubuntu Server dan yang terakhir adalah membangun server monitoring menggunakan suatu tools monitoring yg berjalan pada Ubuntu Server. Pada Karya Akhir ini, penulis menggunakan sebuah tools monitoring OpenNMS yang dapat memantau performansi jaringan dengan mengirimkan notififikasi sehingga pengelola dapat dengan mudah mengetahui performa server FreeNAS dan MailServer. Simulasi ini di implementasikan dalam suatu jaringan local, setelah dilakukan pengujian dapat dinyatakan bahwa server monitoring OpenNMS dapat memantau performansi server FreeNAS dan Server eMail. Kata Kunci: Monitoring, Server, FreeNAS, Squeremail, OpenNMS

Sulfosulfuron used for chemical control of Bromus rigidus in wheat in the Sais area of Morocco

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Routing Selection in Mobile ad hoc Network using Soft Computing Approaches

  Routing in the mobile ad hoc network (MANET) is a challenging task and has received a great amount of attention from researchers. This paper introduces an exact reference routing model to find the shortest path (optimum route). This model is a conventional combinatorial that selects the shortest route from all possible routes. To demonstrate the use of this reference model for comparison a second model is selected which is a modified ant colony optimisation (ACO). The good selection of the heuristic parameters of the ACO mode  increases its matching degree with the reference one. Therefore, a training pre-processing phase is added to select the best parameters for ACO model. The two models are compared using four different criteria. These criteria are the execution time, energy consumption, the total cost, and the network lifetime. A simulation experiment is performed, and the results show that the modified ant colony algorithm is superior in execution time but consumed more energy than the reference combinatorial and its total cost is greater than or equal to the other one. The lifetime analysis shows that the reference model has better lifetime than the modified ACO model.  </p

Energy aware routing algorithm in MANET using linear programming

Mobile ad hoc networks (MANET) are wireless network without infrastructure and suffering from low power battery. Therefore the main objective in finding a route for traffic transfer from a given source to a given destination is to minimize the node energy consumption. This paper solves the problem of finding a route satisfying the main objective of minimum energy consumption and other QoS requirements such as minimum delay and maximum packet delivery ratio by using linear programming technique. Two cases are considered: 1. The traffic amount of a given request is transmitted into single path, and 2. The traffic amount of a request can be distributed into parallel paths. A preprocessing step is done first for network topology design. This step leads to formulate the first case as integer linear programming problem and the second case as linear programming and not mixed integer linear programming. The two obtained solutions are evaluated in terms of three criteria: energy consumption, execution time, and packet delivery ratio using an experimental study.  The results show that the solution of second case is much better than the first case in terms of energy consumption and execution time. Packet delivery ratio in the second case is 100% while in the first case is only 76%.  </p

Mobility of Zinc in Sandy Soil of Loukkos Area (Northwestern Morocco)

This study investigated the effect of different leaching rates on the downward movement of zinc applied, as fertilizer, on the surface of a sandy soil. The experiment was conducted in polyethylene bags filled to 30 cm depth with sandy soil. A zinc supply of 15.3 10-3 cmolc kg-1 was applied to the soil surface as a solution of zinc sulfate. Three leaching rates were tested: 31 mm, 208 mm and 497 mm. Results showed the absence of zinc in the leachate for all leaching rates. Within the soil profile, the highest content on exchangeable zinc (15.3 10-3 cmolc kg-1) was recorded in the top soil layer (0-10cm) for all leaching rates. In the middle (10-20 cm) and in the lower (20-30 cm) layers, the exchangeable zinc content remained similar to that recorded before leaching (0.76 10-3 cmolc kg-1). The percentage of the cation exchange capacity occupied by zinc in the top soil layer increased after leaching. It averaged 0.35% for all leaching rates while it remained similar to that recorded before leaching (0.03%) for the middle and the lower layers. This increase was linked to the adsorption saturations sites particularly released by manganese, potassium, calcium and ammonium after their downward movement