Many rural regions around the world, especially in developing regions, do not have good connectivity solutions which are economically viable. As a result, many of these regions remain disconnected from both the rest of the world and from progress in general. In this proposal, I will describe the design of WiFi-based Rural Extensions (WiRE), a new wireless network architecture that can provide c...

fouling is one of the main parameters in design of any exchanger. ignoring this parameter causes problems such as overheating or under- heating of process streams. in this article a heat exchanger network was designed using process streams data in cdu of tehran refinery. then using tema fouling factors, network exchangers were designed and area and cost were estimated. by changing fouling facto...

The performance of a handheld Vector Network Analyzer (VNA), the nanoVNA, low-cost, open-source instrument, was evaluated. instrument measures complex permittivity dielectric media from 1-port reflection parameters in 1 – 900 MHz bandwidth. We manufactured an open-ended coaxial probe using SMA-N adapter to perform measurements. accuracy nanoVNA comparable that commercial VNA between and 500 acc...

Network processors utilize a special unit for the classification of the received packets according to their characteristics. The classification of packets is currently the most processor intensive portion of network processing which has to be performed at wire speed. Currently, network processors use Content Addressable Memories (CAM), for classification of thousands of flow identifiers in ATM ...

This paper presents the rational and the design of a time-triggered low-cost sensor network that conforms to the design principles of the timetriggered architecture. TTP/A is a multimaster UART-based sensor network that provides temporally predictable communication to sensor and actuator nodes in a distributed real-time system. It provides multiple views of a sensor node, such as a periodic rea...

With the evolution of mobile devices, and smart-phones in particular, comes the ability to create new experiences that enhance the way we see, interact, and manipulate objects, within the world that surrounds us. It is now possible to blend data from our senses and our devices in numerous ways that simply were not possible before using Augmented Reality technology. In a near future, when all of...

We present a novel interconnection network topology called hybrid fat-tree. The proposed network is constructed by recursively halving an initial set of n nodes and connecting each in a regular manner. We desribe an algorithm for constructing the network, analyse the networks performance and present a simple algorithm for message routing in the network. The network has a small diameter of no gr...

Neural networks were used to estimate the cost of jet engine components, specifically shafts and cases. The neural network process was compared with results produced by the current conventional cost estimation software and linear regression methods. Due to the complex nature of the parts and the limited amount of information available, data expansion techniques such as doubling-data and data-cr...

Identifying precursor events that allow the timely forecasting of landslides, thereby enabling risk reduction, is inherently difficult. Here we present a novel, low cost, flow visualization technique using time-lapsed imagery (TLI) allows real time analysis slope movement. This approach applied to Rest and Be Thankful slope, Argyle, Scotland, where past debris flows have blocked A83 or forced p...