Multilayer DS-MAC with game theory optimization

Circuit World ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Radha S. ◽  
G. Josemin Bala ◽  
Nagabushanam P.
Keyword(s):  
Game Theory ◽  
Energy Consumption ◽  
Political Parties ◽  
Path Loss ◽  
Base Stations ◽  
Node Mobility ◽  
Distributed Mac ◽  
Coverage Area ◽  
Content Type ◽  
Practical Implications

Purpose Energy is the major concern in wireless sensor networks (WSNs) for most of the applications. There exist many factors for higher energy consumption in WSNs. The purpose of this work is to increase the coverage area maintaining the minimum possible nodes or sensors. Design/methodology/approach This paper has proposed multilayer (ML) nodes deployment with distributed MAC (DS-MAC) in which nodes listen time is controlled based on communication of neighbors. Game theory optimization helps in addressing path loss constraints while selecting path toward base stations (BS). Findings The simulation is carried out using NS-2.35, and it shows better performance in ML DS-MAC compared to random topology in DS-MAC with same number of BS. The proposed method improves performance of network in terms of energy consumption, network lifetime and better throughput. Research limitations/implications Energy consumption is the major problem in WSNs and for which there exist many reasons, and many approaches are being proposed by researchers based on application in which WSN is used. Node mobility, topology, multitier and ML deployment and path loss constraints are some of the concerns in WSNs. Practical implications Game theory is used in different situations like countries whose army race, business firms that are competing, animals generally fighting for prey, political parties competing for vote, penalty kicks for the players in football and so on. Social implications WSNs find applications in surveillance, monitoring, inspections for wild life, sea life, underground pipes and so on. Originality/value Game theory optimization helps in addressing path loss constraints while selecting path toward BS.

Prolonging network lifetime and optimizing energy consumption using swarm optimization in mobile wireless sensor networks

Sensor Review ◽  
2018 ◽  
Vol 38 (4) ◽  
pp. 534-541
Author(s):  
Sangeetha M. ◽  
Sabari A.
Keyword(s):  
Energy Consumption ◽  
Network Lifetime ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Mobile Nodes ◽  
Mobile Wireless ◽  
Swarm Optimization ◽  
Content Type ◽  
Mobile Wireless Sensor ◽  
Practical Implications

Purpose This paper aims to provide prolonging network lifetime and optimizing energy consumption in mobile wireless sensor networks (MWSNs). Forming clusters of mobile nodes is a great task owing to their dynamic nature. Such clustering has to be performed with a higher consumption of energy. Perhaps sensor nodes might be supplied with batteries that cannot be recharged or replaced while in the field of operation. One optimistic approach to handle the issue of energy consumption is an efficient way of cluster organization using the particle swarm optimization (PSO) technique. Design/methodology/approach In this paper two improved versions of centralized PSO, namely, unequal clustering PSO (UC-PSO) and hybrid K-means clustering PSO (KC-PSO), are proposed, with a focus of achieving various aspects of clustering parameters such as energy consumption, network lifetime and packet delivery ratio to achieve energy-efficient and reliable communication in MWSNs. Findings Theoretical analysis and simulation results show that improved PSO algorithms provide a balanced energy consumption among the cluster heads and increase the network lifetime effectively. Research limitations/implications In this work, each sensor node transmits and receives packets at same energy level only. In this work, focus was on centralized clustering only. Practical implications To validate the proposed swarm optimization algorithm, a simulation-based performance analysis has been carried out using NS-2. In each scenario, a given number of sensors are randomly deployed and performed in a monitored area. In this work, simulations were carried out in a 100 × 100 m2 network consisting 200 nodes by using a network simulator under various parameters. The coordinate of base station is assumed to be 50 × 175. The energy consumption due to communication is calculated using the first-order radio model. It is considered that all nodes have batteries with initial energy of 2 J, and the sensing range is fixed at 20 m. The transmission range of each node is up to 25 m and node mobility is set to 10 m/s. Practical implications This proposed work utilizes the swarm behaviors and targets the improvement of mobile nodes’ lifetime and energy consumption. Originality/value PSO algorithms have been implemented for dynamic sensor nodes, which optimize the clustering and CH selection in MWSNs. A new fitness function is evaluated to improve the network lifetime, energy consumption, cluster formation, packet transmissions and cluster head selection.

Effects of the actively morphing root chord and taper on helicopter energy

2019 ◽  
Vol 92 (2) ◽  
pp. 264-270
Author(s):  
Firat Sal
Keyword(s):  
Control System ◽  
Energy Consumption ◽  
Flight Control ◽  
Design Methodology ◽  
Chord Length ◽  
Flight Control System ◽  
Content Type ◽  
Helicopter Blade ◽  
Blade Root ◽  
Practical Implications

Purpose The purpose of this paper presents the effects of actively morphing root chord and taper on the energy of the flight control system (i.e. FCS). Design/methodology/approach Via regarding previously mentioned purposes, sophisticated and realistic helicopter models are benefitted to examine the energy of the FCS. Findings Helicopters having actively morphing blade root chord length and blade taper consume less control energy than the ones having one of or any of passively morphing blade root chord length and blade taper. Practical implications Actively morphing blade root chord length and blade taper can be used for cheaper helicopter operations. Originality/value The main originality of this paper is applying active morphing strategy on helicopter blade root chord and blade taper. In this paper, it is also found that using active morphing strategy on helicopter blade root chord and blade taper reasons less energy consumption than using either passively morphing blade root chord length plus blade taper or not any. This causes also less fuel consumption and green environment.

An efficient termination control strategy of air-vented dryer for fabric drying

2018 ◽  
Vol 30 (3) ◽  
pp. 412-427 ◽  
Author(s):  
Yuhui Wei ◽  
Zhaowei Su ◽  
Huashan Lu ◽  
Xue Mei Ding
Keyword(s):  
Energy Consumption ◽  
Control Strategy ◽  
Low Cost ◽  
Drying Time ◽  
Content Type ◽  
Exhaust Duct ◽  
Microscopic Damage ◽  
Novel Strategy ◽  
Drying Efficiency ◽  
Practical Implications

Purpose The purpose of this paper is to develop an efficient termination control strategy of air-vented dryer in term of energy saving, improving smoothness and reducing microscopic damage of fiber. Design/methodology/approach A simple, low cost termination control strategy is developed by testing the instantaneous humidity of exhaust air and then deducing the drying degree of fabric in process. The practicability evaluation of this novel strategy was investigated by using both experimental and mathematical approaches. The effect of termination control strategy on drying efficiency and fabric apparent properties were also discussed. Findings Termination control strategy significantly affects drying time, energy consumption, smoothness and microscopic of fiber. Specially, a novel termination control strategy that the combination of equilibrium moisture content of fabric in ambient environment and relative humidity of exhaust air in exhaust duct is workable and can save 25.2 percent of energy consumption, 26.7 percent of the drying time and improve 0.7 grade of the appearance smoothness, as well as significantly reduce the microscopic damage of fiber compare to the original control strategy of dryer. This indicates possible ways to minimize drying energy consumption and dryer damage by reducing unnecessary migrate out of the water from the clothes. Practical implications The paper is helpful in not only the development of new drying product but also the optimization of appearance smoothness of fabric after drying and reduce the microscopic damage of fiber. Originality/value A novel termination control strategy of dryer is applied to improve drying efficiency of dryer and reduce fabric damage.

scholarly journals Feasibility of CoMP usage in base station switching off during off-peak periods

2021 ◽  
Author(s):  
Abid Jan
Keyword(s):  
Energy Consumption ◽  
Energy Efficient ◽  
Power Saving ◽  
Base Station ◽  
Base Stations ◽  
Efficiency Ratio ◽  
Coverage Area ◽  
Coordinated Multipoint ◽  
Switching Mode ◽  
Carbon Dioxide Equivalent

Existing cellular networks remain operational throughout the year irrespective of traffic. The usage of Coordinated Multipoint (CoMP) transmission to provide service in the coverage area of a switched off base station (BS) during off-peak traffic hours has been investigated in this work. The switching off of a BS reduces its energy consumption to zero, however to cover the switched off BS coverage area by neighbouring BS’s, CoMP transmission causes an increase in energy consumption of the neighbouring BS’s. With increasing the number of base stations taking part in CoMP transmission the power consumption of CoMP base stations and site air conditioning unit increases. Results show that the aggressive usage of CoMP is not feasible in most of the twelve switching modes investigated. From the Energy Efficiency Ratio the most energy efficient switching mode is identified. It is then applied to part of a cellular network and the amount of power saving and Carbon Dioxide equivalent (CO2e) is determined. It is found that within a network of 42 cells 7.26% power can be saved by switching off seven base stations during off-peak traffic hours.

The impact of energy consumption and merchandise exports on CO2 emission in the United Nations geoscheme regions

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Chamil W. Senarathne ◽  
Prabhath Jayasinghe
Keyword(s):  
Energy Consumption ◽  
Environmental Policy ◽  
United Nations ◽  
Developed Countries ◽  
Data Sampling ◽  
Porter Hypothesis ◽  
Content Type ◽  
Long Run ◽  
The Impact ◽  
Practical Implications

Purpose While sustainable development policies are mostly set based on United Nations (UN) geoscheme classification, no study attempts to examine the impact of influential economic variables such as energy consumption (EC) and merchandise exports (ME) on carbon dioxide (CO2) emission in the UN geoscheme regions. The purpose of this paper is to examine the possible impact of EC and ME on CO2 emission in UN geoscheme classification regions such as Africa, America, Arab, Asia and Europe. Design/methodology/approach This paper uses autoregressive distributed lag (ARDL), Pedroni panel cointegration and panel Granger causality methodologies covering an annual panel data sampling period from 1971 to 2014. Findings The results show that there is bidirectional causality between all three variables in the European and American panel except for the non-causality from CO2 to EC in the American panel. These findings suggest possible consequences of weaker energy efficiency (even under environmental policy tightening) and strong demand for energy-intensive economic activities in those regions. Developed countries with higher environmental policy tightening (America and Europe) show significant estimates from the chosen tests supporting the Porter hypothesis. EC and ME have a long-run impact on CO2 emission in American and European panels. The African region has the least environmental impact of pollution from ME. Practical implications The ME and EC have a direct significant impact on CO2 emission in America and Europe. As these causalities, co-integrations and their impacts share a long-run equilibrium relationship, policymakers must design long-term industry policies such as cleaner production techniques focusing on environmentally sustainable practices. Also, it is suggested that the policymakers must ensure that they implement more robust policies and standards for environmental-friendly export production. Originality/value This is the first paper that examines the impact of EC and ME on CO2 emission in UN geoscheme regions. The findings of this paper provide theoretical implications supporting Porter hypothesis and practical implications for policymaking.

Strategy and sustainable marketing problems

2016 ◽  
Vol 32 (3) ◽  
pp. 7-9
Keyword(s):  
Game Theory ◽  
Case Studies ◽  
Design Methodology ◽  
Reading Time ◽  
Cutting Edge ◽  
Content Type ◽  
Sustainable Marketing ◽  
Pertinent Information ◽  
Practical Implications ◽  
Marketing Problems

Purpose – This paper aims to review the latest management developments across the globe and pinpoint practical implications from cutting-edge research and case studies. Design/methodology/approach – This briefing is prepared by an independent writer who adds their own impartial comments and places the articles in context. Findings – Marketers, perhaps more than any other management profession, just love to ask the wacky questions. Perhaps you might get an adventurous economist now and again posing game theory-type conundrums or a HR trainer might invent the world’s worst employer/employee scenario, but in general, the big questions tend to get left to the philosophers and political scientists of this world. Practical/implications – The paper provides strategic insights and practical thinking that have influenced some of the world’s leading organizations. Originality/value – The briefing saves busy executives and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format.

Environmental implication of the Algerian traditional house

2016 ◽  
Vol 27 (3) ◽  
pp. 338-347 ◽  
Author(s):  
Sabrina Kacher ◽  
Hanane Zermout
Keyword(s):  
Energy Consumption ◽  
Design Methodology ◽  
Vernacular Architecture ◽  
Life Quality ◽  
Environmental Implication ◽  
Content Type ◽  
Environmental Systems ◽  
The World ◽  
To Come ◽  
Practical Implications

Purpose – The control of the environmental impacts of buildings and constructions has certainly progressed in recent years in Europe, but very little in Algeria. The purpose of this paper is to identify and to introduce old environmental systems in the Algerian traditional house which could inspire designers to come up with new constructions with enhanced comfort. Design/methodology/approach – In this work, the authors used the “HQE” French certification grid to gauge the environmental implication of the vernacular architecture. Findings – Environmental systems in the traditional house respect the environment but have to be adapted to the current perception of comfort in order to be applied to the new architecture. Research limitations/implications – The main advantage is that the old environmental systems found in the Algerian traditional houses do not require any machinery to enhance the comfort. Thus they do not need any energy to be useful. Practical implications – As the Canadian Well inspired and influenced the architecture produced around the world to improve the comfort inside the houses, or as the thatched roof which inspired the vegetative roof used today to improve and regulate the energy consumption, the authors hope that some old systems used in the vernacular architecture will inspire architects or regular people who would like to enhance their comfort and life quality. Originality/value – Passive solutions used to improve comfort, with reduced energy consumption in houses, are increasingly sought all around the world. This work can play a part in introducing some environmental solutions used in the vernacular architecture which are nowadays left aside.

“It’s our Scotland just as much as anyone else’s”

2016 ◽  
Vol 21 (1) ◽  
pp. 2-9 ◽  
Author(s):  
Ian Hood
Keyword(s):  
Learning Disabilities ◽  
Political Parties ◽  
Design Methodology ◽  
Opposite Effect ◽  
Political Debate ◽  
Process Of Change ◽  
Content Type ◽  
Inclusive Approach ◽  
Practical Implications ◽  
Advocacy Organisation

Purpose – The purpose of this paper is to look at some of the experiences of people with learning disabilities in Scotland during the Independence Referendum campaign, through the prism of a series of workshops run by a collective advocacy organisation. These workshops took an inclusive approach to the views of everyone with a learning disability. Design/methodology/approach – This paper is a record of the workshops written after the event. Findings – People with learning disabilities were engaged in the discussion and campaigns around the referendum in similar ways to other members of their communities. The issues that especially affect people with learning disabilities figured highly in the workshops. However, there was also discussion of more general issues such as employment, jobs and constitutional arrangements that affect all citizens. Research limitations/implications – This is an observational study written up by the workshop leader and, as such, can make no claims of complete impartiality. Practical implications – Experience of the workshops suggests that many of the barriers that prevent civic participation of people with learning disabilities may be ones of staff attitude and approach. The support offered to enable people to take part in the community may on some occasions have the opposite effect. Social implications – Nonetheless, for those who have been able to overcome these barriers, there are signs of much greater participation in public life. This reflects an ongoing process of change with many people now joining political parties or being able to make contributions towards political debate. Originality/value – This paper provides an important record of the growing involvement of people with learning disabilities in civil society.

How to offer mobile targeting promotion under asymmetry

2017 ◽  
Vol 8 (3) ◽  
pp. 289-303
Author(s):  
Qin Wan ◽  
Jing Zhu ◽  
Huijing Li ◽  
Lili Wang
Keyword(s):  
Game Theory ◽  
Price Competition ◽  
Design Methodology ◽  
Game Model ◽  
Trade Off ◽  
Content Type ◽  
Equilibrium Prices ◽  
Mobile Accessibility ◽  
The Cost ◽  
Practical Implications

Purpose Based on consumers’ geographic real-time locations, firms can utilize mobile targeting promotion (MTP) to target consumers through some applications embedded in mobile device. This paper aims to focus on two competing firms about how to make MTP strategies under asymmetric mobile accessibilities, i.e. the proportions of consumers who can be targeted by firms through apps are different. Design/methodology/approach This paper develops a game model for two competing firms. Aiming to maximizing profit, firms should consider how to utilize MTP strategies to trade off the benefit (expand market share) and the cost (intensive price competition). Findings The optimal MTP strategies and equilibrium prices have been presented under different scenarios. This paper verifies that asymmetry can make the firm with high mobile accessibility obtain extra profits. Furthermore, when unit targeting cost is relatively low, profit of the firm with low mobile accessibility increases first and decreases later with respect to its mobile accessibility. Practical implications Competing firms’ optimal MTP strategies and equilibrium prices are determined not only by unit targeting cost but also by consumers’ mobile accessibilities to firms. Firms have strong incentive to enlarge the mobile accessibility to procure more profit in monopoly context, but, under competing context, a higher mobile accessibility may not mean better for firm. Originality/value This is one of the few papers which study mobile targeting based on game theory considering unit targeting cost and asymmetric mobile accessibility simultaneously.

Understanding the HR inbetweeners

2019 ◽  
Vol 27 (2) ◽  
pp. 18-20
Keyword(s):  
Political Parties ◽  
Case Studies ◽  
Design Methodology ◽  
Reading Time ◽  
Cutting Edge ◽  
Content Type ◽  
Pertinent Information ◽  
Practical Implications

Purpose The purpose of this paper is to review the latest management developments across the globe and pinpoint practical implications from cutting-edge research and case studies. Design/methodology/approach This briefing is prepared by an independent writer, who adds their own impartial comments and places the articles in context. Findings It is perhaps unwise to equate the internal workings of political parties to corporations, but aside from sport and TV, there are a precious few bodies that we can publicly ogle at and discuss, aside from the organizations we ourselves work for. Poking our nose into what makes certain firms tick – and what makes them a disaster scene – is one of the vicarious pleasures we can all enjoy at other people’s expense without feeling too guilty. And more importantly, there can be a lot to learn. Practical implications This paper provides strategic insights and practical thinking that have influenced some of the world’s leading organizations. Originality/value The briefing saves busy executives and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format.

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