Energy Saving in Data Processing and Communication Systems

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.

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Energy Optimization of a Laser-Powered Hovering-UAV Relay in Optical Wireless Backhaul

10.36227/techrxiv.17087309.v1 ◽

2021 ◽

Author(s):

Muhammad Salman Bashir ◽

Mohamed-Slim Alouini

Keyword(s):

Quality Of Service ◽

Communication Systems ◽

Low Cost ◽

Base Stations ◽

Achievable Rate ◽

Optical Wireless ◽

Free Space Optical ◽

Decode And Forward ◽

Wireless Backhaul

<div>Due to their flexibility and low cost deployment, unmanned aerial vehicles (UAV) will most likely act as base stations and backhaul relays in the next generation of wireless communication systems. However, these UAVs---in the untethered mode---can only operate for a finite time due to limited energy they carry in their batteries. In free-space optical communications, one solution is to transport both the data and the energy from the source to the UAV through the laser beam---a concept known as <i>simultaneous lightwave information and power transfer</i> (SLIPT). In this study, we have analyzed the SLIPT scheme for laser-powered decode-and-forward UAV relays in an optical wireless backhaul. The major goal of this study is to optimally allocate the received beam energy between the decoding circuit, the transmitting circuit and the rotor block of the relay in order to maximize a quality-of-service metric such as maximum achievable rate, outage or error probabilities. As expected, we note that the optimal power allocation depends heavily on the source-relay and relay-destination channel conditions. In the final part of this study, we have maximized the operational time of the UAV relay given that the maximum achievable rate stays above a certain threshold in order to meet a minimum quality-of-service requirement.</div>

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Engineering QoS and Energy Saving in the Delivery of ICT Services

Sustaining Power Resources through Energy Optimization and Engineering - Advances in Computer and Electrical Engineering ◽

10.4018/978-1-4666-9755-3.ch009 ◽

2016 ◽

pp. 208-226 ◽

Cited By ~ 1

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.

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Power Management of Server Farms

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.492.453 ◽

2014 ◽

Vol 492 ◽

pp. 453-459 ◽

Cited By ~ 4

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.

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GREEN ROUTINGSTRATEGY FOR DYNAMICALLY ARRANGED HOMOGENEOUS WSN- MSCT2

INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY ◽

10.24297/ijct.v12i7.3077 ◽

2014 ◽

Vol 12 (7) ◽

pp. 3712-3718

Author(s):

Gulista Khan ◽

Wajid Ali ◽

Swati Arya ◽

Vaibhav Sharma

Keyword(s):

Wireless Networks ◽

Sensor Network ◽

Communication Systems ◽

Fault Tolerant ◽

Base Station ◽

Ease Of Use ◽

Sensor Nodes ◽

Base Stations ◽

General Terms

Wireless networks play a crucial role in the communication systems nowadays. Wireless networks are being increasingly used in the communication among devices of the most varied types and sizes. User mobility, affordability, flexibility and ease of use are few of many reasons for making them very appealing to new applications and more users everyday. A Wireless Sensor Network (WSN) is composed of sensor nodes spread over the field to sense the data. The sensed data must be gathered & transmitted to Base Station (BS) for end user queries. The used sensor nodes being in- expensive having low computation power & limited energy so are not as much reliable as their expensive macro sensor counter parts but their size and cost enable hundred to thousand of micro sensors to achieve high quality fault tolerant system. In an environment where in each round all sensor nodes have to send data to base station; it is required to effectively utilize energy of sensor nodes so as to increase the life- time of the system. The use of data aggregation & fusion as proposed in LEACH increases system lifetime by a factor of 8 as compared to conventional routing protocols. In this work, our main focus is the static sensors are randomly selected and the base stations have their information all a priori. Basically, the sensors are in direct communication range of each other and can transmit to and receive from the base station. The nodes periodically sense the environment and have always data to send in each round of communication. The nodes fuse/ aggregate the data they receive from the others with their own data, and produce only one packet regardless of how many packets they receive. The problem is to find a routing scheme or an efficient protocol to deliver data packets collected from sensor nodes to the base station. It maximizes the lifetime of the sensor network under the system model given above. However, the definition of quality of service of the sensor network provides is not specified. Secondly, where the nodes are densely deployed, the quality of the system is affected as soon as a significant amount of nodes die, since adjacent nodes record identical or related data. In this case, the lifetime of the network is the time elapsed until half of the nodes or some specified portion of the nodes die. In general terms, the time in rounds where the last node depletes all of its energy defines the lifetime of the overall sensor network. Taking these different possible requirements under consideration, our work provides a proper timing of all deaths for all algorithms in detail as well as chooses the shortest possible path for communication with better memory management scheme and leaves the decision which one to choose to system designers.

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Kajian Revitalisasi Pasar Pleret Kabupaten Bantul

Media Wisata ◽

10.36276/mws.v14i2.252 ◽

2021 ◽

Vol 14 (2) ◽

Author(s):

Prihatno Prihatno

Keyword(s):

Economic Growth ◽

Power Saving ◽

Quality Level ◽

Cultural Environment ◽

Economic Management ◽

Shopping Centre ◽

Traditional Markets ◽

Traditional Market ◽

The Government

The existence of traditional markets that have unique functions and diversity must be preserved and conserved as one characteristic of the culture in the district of Bantul in particular because there are values that are not contained in a modern shopping centre. This has encouraged the government is obliged to immediately revitalize traditional markets in order to respond to the chronic problems of the traditional market which is related to the traditional market image problem. Traditional markets are imaged as rundown, dirty, muddy, poorly maintained, and has a quality level of occupancy very down Program traditional market revitalization aims to improve the performance and quality of the market. Review activity Market Revitalization Pleret intended to identify the physical, economic, management, environmental and social, in order to obtain data that can be used to find out the problems and constraints faced by market Pleret development efforts as a traditional market better, formulate. Market revitalization programs and activities Pleret Bantul and provide recommendations on structuring the physical aspects, economics, management, socio-cultural environment and Pleret Pasar Bantul. The results showed that Pleret Market is a traditional market with pancawara or use the 'market'. namely, a market which used 'pasara' which consisted of five days a week, namely PON‟, Legi, Pahing, Pon and Wage. And the market Pleret uses only two days is the day with the 'market' Pon and day with the 'market' PON‟ while other days by Legi, Pahing and Wage in the market Pleret not move alias lid so that the count of time efficiency, the market Pleret including market inefficient because only open 12 days a month. In an effort to improve the image and power saving Pasar Pleret, it is recommended that the market Pleret can soon turn into a normal market, the business should immediately take the policy with regard to improving the management of Market Pleret, so that this market can operate optimally and efficiently, serve the needs of society, merchants increase revenue, and increase revenue (PAD) through retribution market which will eventually boost economic growth Bantul.

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Energy Optimization of a Laser-Powered Hovering-UAV Relay in Optical Wireless Backhaul

10.31224/osf.io/6ry2e ◽

2021 ◽

Author(s):

Muhammad Salman Bashir ◽

Mohamed-Slim Alouini

Keyword(s):

Quality Of Service ◽

Communication Systems ◽

Low Cost ◽

Base Stations ◽

Achievable Rate ◽

Optical Wireless ◽

Free Space Optical ◽

Decode And Forward ◽

Wireless Backhaul

Due to their flexibility and low cost deployment, unmanned aerial vehicles (UAV) will most likely act as base stations and backhaul relays in the next generation of wireless communication systems. However, these UAVs---in the untethered mode---can only operate for a finite time due to limited energy they carry in their batteries. In free-space optical communications, one solution is to transport both the data and the energy from the source to the UAV through the laser beam---a concept known as simultaneous lightwave information and power transfer (SLIPT). In this study, we have analyzed the SLIPT scheme for laser-powered decode-and-forward UAV relays in an optical wireless backhaul. The major goal of this study is to optimally allocate the received beam energy between the decoding circuit, the transmitting circuit and the rotor block of the relay in order to maximize a quality-of-service metric such as maximum achievable rate, outage or error probabilities. As expected, we note that the optimal power allocation depends heavily on the source-relay and relay-destination channel conditions. In the final part of this study, we have maximized the operational time of the UAV relay given that the maximum achievable rate stays above a certain threshold in order to meet a minimum quality-of-service requirement.

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Energy Optimization of a Laser-Powered Hovering-UAV Relay in Optical Wireless Backhaul

10.36227/techrxiv.17087309 ◽

2021 ◽

Author(s):

Muhammad Salman Bashir ◽

Mohamed-Slim Alouini

Keyword(s):

Quality Of Service ◽

Communication Systems ◽

Low Cost ◽

Base Stations ◽

Achievable Rate ◽

Optical Wireless ◽

Free Space Optical ◽

Decode And Forward ◽

Wireless Backhaul

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Advanced Supervisory Control Plan with Power Saving Strategy for Demand Side Load

AIUB Journal of Science and Engineering (AJSE) ◽

10.53799/ajse.v18i3.38 ◽

2019 ◽

Vol 18 (3) ◽

pp. 108-116

Author(s):

Tanjim Meer Shadman Shafkat ◽

Rahman Md. Abdur ◽

Oishi Ashrafun Nushra

Keyword(s):

Power Management ◽

Supervisory Control ◽

Electrical Power ◽

Power Saving ◽

Demand Side ◽

Core System ◽

Control Plan ◽

Side Load ◽

History Of ◽

Supervisory Control System

Demand Side Power Management is getting crucial to control the gradual rise of electrical power usage day-by-day. Though, the spread of power saving devices is a huge success throughout the world, yet the demand side power management system have to be more efficient and controlled. Here, an unique power saving strategy was established by intranet based Advanced Supervisory Control system. The core system consists of XPSU, XCU, PBU, DS and ASC. Planning of this system has been done not only to solve the above-mentioned criteria but also to reduce huge electricity demand from national grid. To reduce the National Grid pressure, full utilization of renewable energy grid output is ensured in this strategy. By this Control Plan, maximum 31.9% of the instantaneous power has been saved by 11.11% of System-end ASC Switching. A new idea, Electrical Mapping is also introduced for every different load section; by which the load behavior and power consumption history of our different load site area can be understood.

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Strategi Penyelenggaraan Diklat Dan Ujian Sertifikasi Keahlian Pengadaan Barang/ Jasa Pemerintah Di Lingkungan Pemerintah Kabupaten Magelang

Kajian Bisnis STIE Widya Wiwaha ◽

10.32477/jkb.v24i1.219 ◽

2017 ◽

Vol 24 (1) ◽

pp. 87-106

Author(s):

Wiharyanto Wiharyanto

Keyword(s):

Education And Training ◽

Test System ◽

Civil Servants ◽

Quality Of Education ◽

Alternative Formulation ◽

Computer Assisted ◽

Certification Exams ◽

The Government ◽

And Training

The study aims to analyze about the low graduation and certification exam training participants of the procurement of goods / services of the government and its contributing factors, and formulate a strategy of education and training and skills certification exams procurement of goods / services of the government. Collecting data using the method of study documentation, interviews, and questionnaires. Is the official source of information on the structural and functional Regional Employment Board, as well as the participants of the training and skills certification exams procurement of goods / services of the government in Magelang regency government environment. Analysis using 4 quadrant SWOT analysis, to determine the issue or strategic factors in improving the quality of education and training and skills certification exams procurement of government goods / services within the Government of Magelang regency. The results show organizer position is in quadrant I, which is supporting the growth strategy, with 3 alternative formulation strategies that improve the quality of education and training and skills certification exams procurement of government goods / services, and conducts certification examination of the procurement of government goods / services with computer assisted test system (CAT). Based on the research recommendations formulated advice to the organizing committee, namely: of prospective participants of the training and skills certification exams procurement of goods / services the government should consider the motivation of civil servants, is examinees who have attended training in the same period of the year, the need for simulation procurement of goods / services significantly, an additional allocation of training time, giving sanction to civil servants who have not passed the exam, the provision of adequate classroom space with the number of participants of each class are proportional, as well as explore the evaluation of education and training and skills certification exams procurement of goods / services for Government of participants.

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Covid-19 Pandemic And Sustainabilitystudy At Madrasah Ibtidaiyyahpsm Sulursewu, Teguhan, Ngawi, East Java

Jurnal Karya Abdi ◽

10.32520/karyaabdi.v1i02.1156 ◽

2020 ◽

Vol 1 (02) ◽

pp. 103-114

Author(s):

Moh. Toriqul Chaer ◽

Muhammad Atabiqul As'ad ◽

Qusnul Khorimah ◽

Erik Sujarwanto

Keyword(s):

Online Learning ◽

Learning Strategies ◽

Psychological Impact ◽

Educational Institutions ◽

Participatory Action ◽

Social Phenomena ◽

Learning Programs ◽

Teachers And Students ◽

The Government

The continuity of learning programs during the COVID-19 pandemic found educational institutions, especially Madrasah Ibtidaiyyah (MI) temporarily closed the learning process in schools. To prevent the spread of COVID-19 that is currently engulfing Indonesia. Lack of preparation, readiness and learning strategies have a psychological impact on teachers and students. Declining quality of skills, lack of supporting facilities and infrastructure. Learning from home (online) is an effort by the government program to ensure the continuity of learning in the pandemic period. The research method uses participatory action research (PAR), which focuses on understanding social phenomena that occur in the community and mentoring efforts on the problems faced. The assistance effort is to help the children of MI Sulursewu, Ngawi in participating in online learning related to; 1). Preparation of activities, 2). Counselling participants offline method, 3). Offline activities method. Results of the study show that the mentoring activities following the target of achievement; first, the activity can be carried out following the schedule that has been set. Second, students are always on time for the online learning hours that have been set. Offline methods show that efforts can help ease the burden on parents, but can also make it easier for students to receive subject matter.

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