The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this work a control system for restoration reserve providers is proposed in which optimal biddings of restoration reserve capacity are made based on the predicted flexibility of the reserve resources within the portfolio of the reserve provider. It is assumed that the gate closure time for submitting reserve capacity bids is 1 hour before activation time. The reserve capacity bids need to be formed...
Energy harvesting (EH), which explores renewable energy as a supplementary power source, is a promising 5G technology to support the huge energy demand of heterogeneous cellular networks (HCN). However, the random arrival of renewable energy brings great challenges to network management. By adjusting the distribution of traffic load in spatial domain, traffic shaping helps to balance the cell-level...
DIPLODOCUS is a UML profile targeting the design space exploration of Systems-on-Chip at a high level of abstraction. It is supported by an open source toolkit named TTool, which enables the designer to develop, simulate and formally verify SoC models. Up to now, performance criteria such as CPU and bus loads were the main metrics used for the exploration. The main objective of our research works...
In this paper, fuel cell — based hybrid power supplies for household appliances are addressed. The profile of residential power consumption is evaluated during working, non-working days in both summer and winter periods. The worst-case load power demand is therefore highlighted. A 5kW Nuvera PowerFlow proton exchange membrane fuel cell for household appliances is tested. On the basis of the characterization...
Current gold standard sleep study systems that record several biophysical parameters during sleep are bulky and are typically located in a medical facility where patient monitoring becomes costly and inefficient. Home-based portable systems solve these problems but are highly inadequate as they record minimal number of biophysical channels due to limited battery life. A survey conducted in the medical...
The current state of the art in wireless sensor nodes, both in academia and industry, is a fractured landscape of designs mostly addressing individual problems. The most common commercial design derives directly from a mote developed at the University of California, Berkeley around 1999, and presents only moderate, incremental improvements over the original design. No designs yet present a comprehensive,...
Power resources on the mobile device are always valuable, meanwhile there are 4.6 billion mobile-phone subscribers worldwide. The total amount of energy consumed and the carbon footprint on those mobile devices is considerable which implies developing tools for green applications to become ever more critical. However, there is currently no effective way for application developers to know the power...
The amount of power that can be provided for charging the batteries of the electric vehicles connected to a single neighborhood step-down transformer is constrained by the infrastructure. This paper presents a distributed and collaborative residential-level power grid management application to alleviate the need of costly infrastructure upgrade. The application is designed to be hosted in our in-house...
Wireless sensor nodes that are self-powered by extracting their energy from their environment are a new opportunity for monitoring purpose. Since the available energy is not constant over time and due to very low harvested power levels, efficient energy and power management strategies are mandatory for improving their autonomy. At system level, scheduling algorithms are proposed to efficiently use...
Autonomous devices that are self-powered by extracting their energy from their environment are a new opportunity for monitoring purposes. A multi-energy sources and multi-sensors microsystem targeting autonomous wireless sensor node applications is presented. Since the available energy is not constant over time and due to very low harvested power levels, an efficient energy and power management strategy...
The use of Graphics Processing Units (GPUs) in general purpose computing has been shown to incur significant performance benefits, for applications ranging from scientific computing to database sorting and search. In this paper we try to evaluate the execution of integer arithmetic operation on CPU and GPU processors. We evaluate the execution from both performance and power consumption perspectives.
In many DSP applications (image and voice processing, baseband symbol decoding in high quality communication channels) several dBs of SNR loss can be tolerated without noticeable impact on system level performance. For power optimization in such applications, voltage overscaling can be used to operate the arithmetic circuitry slower than the critical circuit path delay while incurring tolerable SNR...
In this paper, we present a new technique to improve the reliability of H-tree SRAM memories. This technique deals with the SRAM power-bus monitoring by using built-in current sensor (BICS) circuits that detect abnormal current dissipation in the memory power-bus. This abnormal current is the result of a single-event upset (SEU) in the memory and it is generated during the inversion of the state of...
A low power reconfigurable DCT architecture is proposed, which can be run at three transform precision levels for different demands. Using the character of energy distribution of the DCT matrix after 2D DCT operation, we selected the best DCT bases which achieve considerable power reduction in DCT operation with minimum image quality degradation. The reconfigurable architecture can achieve power saving...
In this presentation we overview the multi-discipline low power platform architecture and where improvements were made, we will show examples of low power innovations in process technology, microprocessor design, IO signaling and IO power delivery subsystems. We will show these innovations and techniques resulted in energy efficient mobile computing to the end user. We will end the presentation with...
This paper presents a distributed fermat-point range estimation strategy, which is important in the moving sensor localization applications. The fermat-point is defined as a point which minimizes the sum of distances from three sensors inside a triangle. This point is indeed at the trianglepsilas center of gravity. We solve the problems of large errors and poor performance in the bounding box algorithm...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.