Performance Evaluation of Routing Metrics in Wireless Multi-Hop Networks

2016 ◽  
pp. 85-104
Author(s):  
Usman Ashraf ◽  
Syed Salman Haider Rizvi ◽  
Mohammad Faisal Azeem
Keyword(s):  
Performance Evaluation ◽  
New Technology ◽  
Academic Research ◽  
Communication Technologies ◽  
Test Bed ◽  
Routing Metrics ◽  
Hop Count ◽  
Ieee 802.11N ◽  
The World ◽  
And Performance

In the world of wireless communication technologies, the new standard IEEE 802.11n (MIMO) has revolutionized the available wireless bandwidth. Significant industrial and academic research has been initiated on this new technology around the world. Moreover, international as well as local manufacturers are highly interested in commercialization and performance improvement of this new technology. This is a research project in which we will perform comprehensive benchmarking of IEEE 802.11n in wireless multi-hop environments. In this project we evaluate the performance of routing metrics: Hop Count (HC) and Expected Transmission Count (ETX) on a test bed at A-Block Air University.

scholarly journals Using Technology in Pedagogically Responsive Ways to Support Literacy Learners

2009 ◽  
pp. 203-215 ◽  
Author(s):  
Lisa Kervin ◽  
Jessica Mantei ◽  
Jan Herrington
Keyword(s):  
Information And Communication Technologies ◽  
Meaning Making ◽  
New Technology ◽  
Authentic Learning ◽  
Communication Technologies ◽  
Literate Practices ◽  
New Knowledge ◽  
The World ◽  
Information And Communication ◽  
Literacy Learners

In this chapter the authors discuss two central themes: the changing nature of literate activity brought about by Information and Communication Technologies (ICT), and suggestions for how educators could respond to this guided by principles of authentic learning. The access many young people have to ICT has resulted in new forms of literacy as they manipulate technology, using this new knowledge to assist the process of meaning making. Each new technology brings with it navigational concepts, space to negotiate, new genres and a range of modalities, all of which need to be interpreted. ICTs have the potential to reshape literate practices in classrooms as students create, collect, store and use knowledge as they connect and collaborate with people and resources across the world. What is crucial though, is that the nexus between technology and literacy within classrooms is conceptualised through meaningful, relevant and authentic connections with curricula.

Moving Towards E-Government in a Developing Society

2011 ◽  
pp. 1953-1969
Author(s):  
Princely Ifinedo
Keyword(s):  
Developing Countries ◽  
Information Systems ◽  
New Technology ◽  
Communication Technologies ◽  
Information Communication Technologies ◽  
Information Communication ◽  
Is Research ◽  
The World ◽  
Sub Saharan ◽  
Developing Society

The use of information communication technologies (ICT) in governance is growing rapidly in many parts of the world. Developing countries in Africa are also making efforts to harness the new technology. In this chapter, we review the problems, progress, and prospects of e-government in Nigeria, a sub-Saharan African (SSA) country. Governments in the developing countries of SSA can benefit from e-government initiatives, as do their counterparts in advanced nations, when the concept of e-governments in SSA is understood, and concerted efforts are committed towards institutionalizing it in the region. This chapter provided useful insights in this regard. We discussed the contribution of the chapter to information systems (IS) research, and we highlighted the lessons from Nigeria for comparable nations in the SSA region as they prepare for e-government.

scholarly journals Ballast Contamination Mechanisms: A Criterial Review of Characterisation and Performance Indicators

2020 ◽  
Vol 5 (11) ◽  
pp. 94
Author(s):  
Daniel Bassey ◽  
Ben Ngene ◽  
Isaac Akinwumi ◽  
Victor Akpan ◽  
Gideon Bamigboye
Keyword(s):  
Developing Countries ◽  
Performance Evaluation ◽  
Performance Indicators ◽  
Cost Efficiency ◽  
Maintenance Costs ◽  
Track Maintenance ◽  
Fundamental Parameters ◽  
Particle Fragmentation ◽  
The World ◽  
And Performance

Across the world, ballasted railway tracks are utilised extensively due to their cost efficiency, ease of drainage, and capacity to withstand cyclic imposed loadings from heavy trains. In spite of these benefits, the ballast is often considered as a flexible medium; as such, its continuous deterioration is largely disregarded. Geotechnical challenges such as ballast contamination in the form of particle fragmentation, deposition of weathered materials, upward pumping of clay and fines from underlayers, and coal intrusion have led to differential settlements and reduced drainability of tracks, thereby exacerbating track maintenance costs. This study reviews existing works of literature to expound on the mechanisms for ballast contamination and to highlight the fundamental parameters that guide the characterisation and performance evaluation of railway ballasts. The study shows that ballast fragmentation accounts for about 76% of commonly recorded contaminations, while it is also observed as the most critical to track stability. As such, a variety of indices and specifications for ballast gradation have been established worldwide to guide practice in ballast characterisation and performance evaluation. However, the mechanisms of ballast fragmentation and deterioration require further research to guide the improvement of contemporary guidelines, and mitigate the risk of abrupt track failures, especially in developing countries.

scholarly journals Formulation and Performance Evaluation of Calendula Officinalis Linn Extract Loaded Ethosomal Cream

2021 ◽  
Vol 23 (11) ◽  
pp. 462-474
Author(s):  
Archana R. Dhole ◽  
◽  
Khushabu M. Mulla ◽  
Sushmita S. Salunkhe ◽  
Komal S. Talekar ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Antioxidant Properties ◽  
Calendula Officinalis ◽  
Novel Approach ◽  
Pharmacological Studies ◽  
The World ◽  
Anti Inflammatory ◽  
And Performance

Among the various species of the genus Calendula, C. officinalis is the only one, which is extensively used clinically throughout the world. Pharmacological studies reveal that C. officinalis exhibits antibacterial, antiviral, anti-inflammatory, anti-tumor and antioxidant properties, helps promote the healing of minor burns, scrapes and skin irritations and relieves sunburn and minor cuts. The objective of this study was to optimize conditions for encapsulating Calendula officinalis Linn extract. Thus a novel approach to effectively treat wrinkles, helps promote the healing of minor burns, scrapes and skin irritations and relieves sunburn and minor cuts by delivery of an antioxidant using a special lipid vesicular carrier, the Ethosomal cream was prepared.

scholarly journals Design, Fabrication and Performance Evaluation of Chicken De-Feathering Machine

2021 ◽  
Vol 8 (12) ◽  
pp. 703-711
Author(s):  
Adefuye O.A ◽  
Adedeji K.A ◽  
Fadipe L.O
Keyword(s):  
Performance Evaluation ◽  
Electric Motor ◽  
Hot Water ◽  
Calorie Content ◽  
The World ◽  
Different Types ◽  
And Performance ◽  
Design Calculations ◽  
The Right ◽  
Rotating Plate

Due to its low fat and calorie content, chicken meat is popular among non-vegetarians all over the world. The design, fabrication, and performance evaluation of a chicken de-feathering machine using locally available materials are described in this paper. The design calculations were done correctly to guarantee the right shaft diameter, as this might impact the machine's efficiency. The machine uses rubber fingers to do the actual removal of the feathers. The rubber fingers are attached to a rotating plate against a stationary plucking basin carrying protruding rubber fingers. From the analysis, a 1.0 H.P electric motor is required to drive the machine and this was used to drive the machine. Following the design and fabrication of the machine, three different types of chickens were used to test its performance. The chickens were immersed in hot water between 60 and 90 degrees Celsius and held between the 40s and 60s. The machine removed feathers without any major damage to the chickens. At each trial, the efficiency was calculated. In conclusion, the machine performed efficiently and effectively, leaving behind products that are readily marketable. Keywords: [Chicken, De-feathering, Efficiency. Fingers, Scalding, Rubber.]

scholarly journals Self-healing Concrete and Environmental Health

2018 ◽  
Vol 5 (3) ◽  
pp. 107-112 ◽  
Author(s):  
Mehrdad Amiri ◽  
Javad Majrouhi Sardroud ◽  
Ali Golsoorat Pahlaviani
Keyword(s):  
Construction Industry ◽  
High Performance ◽  
New Technologies ◽  
New Technology ◽  
Steel Corrosion ◽  
Self Healing ◽  
Natural Processes ◽  
The World ◽  
And Performance ◽  
Creativity And Innovation

Nanotechnology will serve as a suitable solution to achieve high performance in future construction. Using this new technology results in creativity and innovation in the construction industry. One of these new technologies is the smart concrete which has received much emphasis in recent years. Many research and experiments have been conducted in scientific research centers around the world in this regard. It is an undeniable fact that concrete structures are prone to cracking. Natural processes have caused cracks in the concrete through which harmful substances entered the concrete leading to steel corrosion. To tackle this issue through the conventional method of concrete restorative, materials, especially polymers which are also harmful to the environment, are used. An alternative that the scientists have achieved is to employ bacteria in concrete through which to produce self-healing concrete and also to reduce the problems regarding the maintenance of concrete for the environment. Bacteria contribute to the durability and performance of the concrete and increase the service life of the concrete.

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