Engineering QoS and Energy Saving in the Delivery of ICT Services

2016 ◽  
pp. 208-226 ◽  
Author(s):  
Alessandra Pieroni ◽  
Giuseppe Iazeolla
Keyword(s):  
Power Consumption ◽  
Energy Saving ◽  
Power Management ◽  
Mobile Networks ◽  
Service Providers ◽  
Management Strategies ◽  
Specific Power ◽  
Wired Networks ◽  
Performance Per Watt ◽  
The Government

ICT service-providers are to daily face the problem of delivering ICT services (data processing (Dp) and/or telecommunication (Tlc) services) assuring the best compromise between Quality of Service (QoS) and Energy Optimization. Indeed, any operation of saving energy involves waste in the QoS. This holds both for Dp and for Tlc services. This paper introduces models the providers may use to support their decisions in the delivery of ICT services. Dp systems totalize millions of servers all over the world that need to be electrically powered. Dp systems are also used in the government of Tlc systems, which also require Tlc-specific power, both for mobile networks and for wired networks. Research is thus expected to investigate into methods to reduce ICT power consumption. This paper investigates ICT power management strategies that look at compromises between energy saving and QoS. Various optimizing ICT power management policies are studied that optimize the ICT power consumption (minimum absorbed Watts), the ICT performance (minimum response-time), and the ICT performance-per-Watt.

scholarly journals Power Management of Server Farms

2014 ◽  
Vol 492 ◽  
pp. 453-459 ◽  
Author(s):  
Giuseppe Iazeolla ◽  
Alessandra Pieroni
Keyword(s):  
Quality Of Service ◽  
Power Consumption ◽  
Power Management ◽  
Management Strategies ◽  
Power Saving ◽  
Performance Per Watt ◽  
The World ◽  
Small Set ◽  
The Universe

The power management of server farms (Sf) is becoming a relevant problem in economical terms. Server farms totalize millions of servers all over the world that need to be electrically powered. Research is thus expected to investigate into methods to reduce Sf power consumption. However, saving power may turn into waste of performance (high response_times), in other words, into waste of Sf Quality of Service (QoS). By use of a Sfmodel, this paper investigates Sf power management strategies that look at compromises between power-saving and QoS. Various optimizing Sf power management policies are studied combined with the effects of job queueing disciplines. The (policy, discipline) pairs, or strategies, that optimize the Sf power consumption (minimum absorbed Watts), the Sf performance (minimum response_time), and the Sf performance-per-Watt (minimum response_time-per-Watt) are identified.By use of the model, the work the server-manager has to do to direct hisSf is greatly simplified, since the universe of all possible (strategies he needs to choose from is drastically reduced to a very small set of most significant strategies.

scholarly journals Innovative approaches and methods to the implementation of energy-saving measures and technologies at mining enterprises

2021 ◽  
Vol 288 ◽  
pp. 01109
Author(s):  
Alexander Semenov ◽  
Yuriy Bebikhov ◽  
Ayaal Egorov ◽  
Vladislav Shevchuk ◽  
Marina Glazun ◽  
...  
Keyword(s):  
Power Consumption ◽  
Mathematical Simulation ◽  
Energy Saving ◽  
Electric Drive ◽  
Economic Benefit ◽  
Energy Savings ◽  
Reactive Power ◽  
Specific Power ◽  
Specific Power Consumption ◽  
Instrumental Monitoring

The paper presents the evaluation of the implementation of innovative methods of energy savings in electric drive and power supply systems at mining enterprises. The evaluation involves mathematical simulation and instrumental monitoring of the defined indicators that allow obtaining a multiplier economic benefit through the appropriate approach to the implementation and subsequent exploitation of energy-saving technologies. For this purpose, the potential of energy savings in industry in general, and at mining enterprises in particular, is shown. Such indicators as power consumption in mining, the dynamics of power losses in public grids, specific power consumption for lighting and household needs, specific power consumption for lifting and supplying water, as well as for sewage treatment were evaluated. As an example, such measures as reactive power compensation, the introduction of frequency-controlled electric drive systems, the development and implementation of the systems for continuous monitoring of power quality indicators were considered pointwise (at some sites of enterprises). The mathematical simulation method was implemented using the MatLab software package. The instrumental monitoring was carried for 7 days with a ten-minute interval. As a result of the assessment of such measures, the total economic benefit approaching to 9.0 million rubles a year was obtained.

The Residential Intelligent Power Consumption Management System

2013 ◽  
Vol 394 ◽  
pp. 265-269
Author(s):  
Yan Wu ◽  
Li Fang Wang ◽  
Cheng Lin Liao
Keyword(s):  
Power Consumption ◽  
Energy Saving ◽  
Power Management ◽  
Management System ◽  
Electrical Equipment ◽  
Scientific Management ◽  
Management Service ◽  
Smart Power ◽  
Household Appliances ◽  
Saving Effect

Because of lacking of effective management and various energy-saving measures, a family smart power management system is introduced. The system includes the servers, LAN and smart power management terminal; the system can control the equipment to achieve the scientific management, and provide users a platform to interact with electrical equipment; the user can use the phone , PAD, PC and other mobile devices log the specified smart power management service website anytime, anywhere to control the electrical household electrical household appliances and query the power consumption, also can control the electrical household electrical household appliances at home through the smart power management terminal. According to the test of the system, the performances verify the system can effectively improve the power consumption rate, and achieve a good energy saving effect.

Strategic priorities for exploiting Bahrain’s medical tourism potential

2017 ◽  
Vol 10 (1) ◽  
pp. 45-60 ◽  
Author(s):  
Ahmed Husain Ebrahim ◽  
Subhadra Ganguli
Keyword(s):  
Best Practice ◽  
Evaluation Method ◽  
Medical Tourism ◽  
Service Providers ◽  
Comprehensive Evaluation ◽  
Management Strategies ◽  
Relevant Market ◽  
Content Type ◽  
Quantitative Research Methods ◽  
The Government

Purpose Medical tourism offers many opportunities to diversify Bahrain’s economy and foster economic development and prosperity. This study aims to holistically investigate the potential of developing Bahrain as a medical tourism destination and create a strategic roadmap to help government decision makers and other key private sector players to realize that potential. Design/methodology/approach This study is primarily based on quantitative research methods. Data were collected from medical service providers in the Kingdom of Bahrain using a questionnaire and subsequently analyzed using quantitative analysis techniques. Findings Overall findings indicate that Bahrain has the potential to attain competitiveness in the medical tourism sector. This can be achieved through a combination of industry-specific management strategies which facilitate effective public–private partnerships, reinvent healthcare legislation and encourage investment in medical tourism infrastructure. Practical implications This study will help determine best practice, prioritize improvement opportunities and enhance performance relative to stakeholders’ expectations and responsible tourism development. Originality/value Studies assessing medical tourism competitiveness of various countries are difficult to obtain. This study fills an existing gap by providing a distinct and comprehensive evaluation method of such competitiveness through a structured analysis of relevant market data in Bahrain. This study can be further extended to include a wider range of stakeholders, namely, private enterprise and the government sector.

CFD-Based Operation Optimization of Hybrid Ships

2020 ◽  
Author(s):  
Bingjie Guo ◽  
Bjørn-Johan Vartdal ◽  
Øystein Åsheim Alnes
Keyword(s):  
Power Consumption ◽  
Power Management ◽  
Output Power ◽  
Management Strategies ◽  
Propulsion System ◽  
Wave Forces ◽  
Hybrid Propulsion ◽  
Fixed Power ◽  
Power Mode ◽  
Ship Speed

Abstract Hybrid propulsion technology is interesting for shipping, both due to possible reduction in fuel cost and strict emission regulations. The efficiency of a hybrid propulsion system will however depend on the power system configuration and the choice of power and energy management strategies. In this study, a simulation model is developed based on CFD, to investigate power management strategies of hybrid propulsion during transit operation. Two engineering operation approaches using fixed RPM mode and fixed power mode are simulated, in order to investigate power management strategy of the hybrid propulsion system. The transition operation of offshore supply vessel Viking Lady is used as an investigated object in the present study. The numerical simulations are performed in both regular sea and irregular sea. CFD results show that the models with the fixed RPM mode and the fixed Power mode give similar results in the power consumption, provided that the ship resistance in waves is predicted accurately as well as the output power and propeller revolution rate are properly designed. The model with the fixed RPM was expected to be able to reduce the power consumption by minimizing ship speed fluctuations when running in heavy sea conditions. The present numerical results show that the fixed RPM mode tried to reduce ship speed change by changing output power. However, it is not able to reduce the change of ship speed efficiently when the first-order wave forces are significantly large, and the power consumption is consequently not reduced.

scholarly journals Energy Saving in Data Processing and Communication Systems

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Giuseppe Iazeolla ◽  
Alessandra Pieroni
Keyword(s):  
Data Processing ◽  
Power Management ◽  
Communication Systems ◽  
Electrical Power ◽  
Power Saving ◽  
Base Stations ◽  
Specific Power ◽  
Storage Devices ◽  
The Government

The power management of ICT systems, that is, data processing (Dp) and telecommunication (Tlc) systems, is becoming a relevant problem in economical terms. Dp systems totalize millions of servers and associated subsystems (processors, monitors, storage devices, etc.) all over the world that need to be electrically powered. Dp systems are also used in the government of Tlc systems, which, besides requiring Dp electrical power, also requireTlc-specificpower, both formobilenetworks (with their cell-phone towers and associated subsystems: base stations, subscriber stations, switching nodes, etc.) and forwirednetworks (with their routers, gateways, switches, etc.). ICT research is thus expected to investigate into methods to reduce Dp- and Tlc-specific power consumption. However, saving power may turn into waste of performance, in other words, into waste of ICT quality of service (QoS). This paper investigates the Dp and Tlc power management policies that look at compromises between power saving and QoS.

The management of risk in a dryland environment

2011 ◽  
pp. 13-21
Author(s):  
D.I. Gray ◽  
J.I. Reid ◽  
D.J. Horne
Keyword(s):  
Risk Management ◽  
Service Providers ◽  
Management Strategies ◽  
Subterranean Clover ◽  
Farming Systems ◽  
Market Risk ◽  
Farm Size ◽  
Forage Crops ◽  
Risk Management Strategies ◽  
Upside Risk

A group of 24 Hawke's Bay hill country farmers are working with service providers to improve the resilience of their farming systems. An important step in the process was to undertake an inventory of their risk management strategies. Farmers were interviewed about their farming systems and risk management strategies and the data was analysed using descriptive statistics. There was considerable variation in the strategies adopted by the farmers to cope with a dryland environment. Importantly, these strategies had to cope with three types of drought and also upside risk (better than expected conditions), and so flexibility was critical. Infra-structure was important in managing a dryland environment. Farmers chose between increased scale (increasing farm size) and geographic dispersion (owning a second property in another location) through to intensification (investing in subdivision, drainage, capital fertiliser, new pasture species). The study identified that there may be scope for further investment in infra-structural elements such as drainage, deeper rooting alternative pasture species and water harvesting, along with improved management of subterranean clover to improve flexibility. Many of the farmers used forage crops and idling capacity (reduced stocking rate) to improve flexibility; others argued that maintaining pasture quality and managing upside risk was a better strategy in a dryland environment. Supplementary feed was an important strategy for some farmers, but its use was limited by contour and machinery constraints. A surprisingly large proportion of farmers run breeding cows, a policy that is much less flexible than trading stock. However, several farmers had improved their flexibility by running a high proportion of trading cattle and buffer mobs of ewe hoggets and trade lambs. To manage market risk, the majority of farmers are selling a large proportion of their lambs prime. Similarly, cattle are either sold prime or store onto the grass market when prices are at a premium. However, market risk associated with the purchase of supplements and grazing was poorly managed.

Agro-Innovation – Path to Agricultural Entrepreneurship: Feasibility Study

2019 ◽  
Vol 5 (1) ◽  
pp. 63
Author(s):  
Elias Kamaruzzaman ◽  
Norzaidi Mohd Daud ◽  
Samsudin Wahab ◽  
Rozhan Abu Dardak
Keyword(s):  
Migrant Workers ◽  
Production Cost ◽  
Swot Analysis ◽  
Service Providers ◽  
Secondary Data ◽  
Financial Cost ◽  
Technology Changes ◽  
Property Owners ◽  
The Government ◽  
Agricultural Entrepreneurship

Technology changes will always be for the better, not only to the end users but also to the intellectual property owners of the technology and the implementers of the technology. The objective of this paper is to study the feasibility and viability for entrepreneurs to become service providers for the dispensation of fertilizers, pesticides, fungicides and supporting services such as aerial crop reconnaissance using Unmanned Aerial Vehicles (UAV) or drones. The methodology used for this study is SWOT Analysis. Both primary and secondary data is used for this analysis. This study finds that paddy farming employing drones is feasible. The beneficiaries of this study shall be the government, by way of lowering financial cost to subsidise the paddy planting, the farmers who no longer need the services of migrant workers, thus saving production cost, and finally the drone service providers and their downstream business associates who can engaged themselves in very lucrative businesses.

IMPROVEMENT OF ENERGY SAVING AND ENERGY EFFICIENCY IN BUILDINGS AND RESIDENTIAL HOUSES IN THE KYRGYZ REPUBLIC

2019 ◽  
pp. 3-17
Author(s):  
Turatbek Kasymov
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Energy System ◽  
Environmental Indicators ◽  
Kyrgyz Republic ◽  
Technical Standards ◽  
Insulating Materials ◽  
Increase Energy Efficiency ◽  
State Construction ◽  
The Government

This article reviews energy consumption in the Kyrgyz Republic economy, environmental indicators and strategies to further develop the national fuel and energy system to ensure energy efficiency and energy saving. An existing situation in energy efficiency of buildings in the country is described. Secondary legislation and by-laws approved by the Government of the Kyrgyz Republic as well as several technical standards, norms, methods and guidelines approved by the order of the State Construction Agency of the Kyrgyz Republic are presented. Applying modern insulating materials are suggested as possible solutions to increase energy efficiency and energy saving. The advantages of EPS-beton in comparison with other thermal insulation materials are discussed and foreign experience of use of EPS-beton products in increasing energy efficiency of buildings is presented.

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