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Articles by Usman Tariq
Total Records ( 2 ) for Usman Tariq
  Usman Tariq , Abdullah Al Jumah and Mustafa Al-Fayoumi
  Multi-channel multi radio wireless communications technologies have changed the trend of traditional routing based Quality of Service (QoS) in wireless-mesh networks. This avalanche of growth in multimedia communication is trigged by Multi-Channel Multi-Radio Wireless Mesh Networks (MCMR-WMNs). It is forecasted that in the near future, societal networks will have latest state of the art radio devices with Multi Channel and Multi Radio (MCMR) communication power with enhanced reliability, throughput and self-healing features. Despite of marked improvements in data link layer and physical layer in the IEEE 802.11 standards, optimized throughput, performance and network availability of MCMR wireless mesh networks still depend upon the efficient routing metric or protocol. We carried out a set of experiment and observed that cross layer routing in mesh networks is highly influenced by traffic load, interference between channel and interference between nodes. Proposed scheme used ‘conjugate distribution method’ which was designed to evaluate end-to-end route and communication reliability using posterior distribution function. Routing metric is evaluated based on load aware, intra and inter-interface aware, packet average delivery ration, latency and overhead with considered criteria of average path length. Competitive study revealed that proposed technique is efficient and applicable especial in environment where end-to-end reliability is required.
  Sumeria Nazir , Adnan Younis , Atif Riaz , Ahsan Akram , Nasir Ahmad Khan , Usman Tariq , M. Nadeem , M. Kaleem Naseem and Muhammad Ahsan
  Background and Objective: Ravenea palm (Ravenea rivularis) is the most popular grown interior potted plant. Present study was carried out to assess the effect of different potting substrates in various compositions on growth and development of Ravenea plants. Materials and Methods: In total, ten treatment combinations were used to compare with control treatment (garden soil) and treatment was consisted of 16 plants with four replications. Various potting substrates: Garden soil, silt, farmyard manure, peat moss, leaf compost and coconut compost in various combinations were added. The experiment was carried out in Completely Randomized Design (CRD). The collected data for plant growth and development were subjected to Duncan’s Multiple Range (DMR) test whereas for chemical and physical characteristics of potting substrate and means was compared. Results: The results depicted that the T10 that is the combination of farmyard manure, silt, coconut compost, peat moss and leaf compost (1:1:1:1:1) exhibited best results for the growth and production of potted Ravenea plants. The treatment T10 substrate is considered excellent due to its density, saturation percentage, structure, texture, consistency and Organic Matter (OM) as well as nitrogen, phosphorus and potassium concentration. Conclusion: It can be concluded that to get quality pot production a mixture of substrates proved to be best as it delivers a combination of properties and nutrients. The new potting mix will provide a stable, organic, sustainable, environmental friendly and cost effective alternatives to nurserymen.
 
 
 
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