Mobile cloud computing (MCC) offers significant opportunities in performance enhancement and energy saving for mobile, battery-powered devices. Applications running on mobile devices may be represented by task graphs. This work investigates the problem of scheduling tasks (which belong to same or possibly different applications) MCC environment. More precisely, involves following steps: (i) determining offloaded onto cloud, (ii) mapping remaining (potentially heterogeneous) local cores...

Dynamic voltage and frequency scaling (DVFS) has been studied for well over a decade. Nevertheless, existing DVFS transition overhead models suffer from significant inaccuracies; example, by incorrectly accounting the effect of DC-DC converters, synthesizers, voltage, change policies on energy losses incurred during mode transitions. Incorrect and/or inaccurate prevent one determining precise break-even time thus forfeit some saving that is ideally achievable. This paper introduces accurate...

FinFET devices have been proposed as a promising substitute for conventional bulk CMOS-based at the nanoscale due to their extraordinary properties such improved channel controllability, high on/off current ratio, reduced short-channel effects, and relative immunity gate line-edge roughness. This brief builds standard cell libraries advanced 7-nm technology, supporting multiple threshold voltages supply voltages. The circuit synthesis results of various combinational sequential circuits...

To cope with the variations and uncertainties that emanate from hardware application characteristics, dynamic power management (DPM) frameworks must be able to learn about system inputs environment adjust policy on fly. In this paper we present an online adaptive DPM technique based model-free reinforcement learning (RL), which is commonly used control stochastic dynamical systems. particular, employ temporal difference for semi-Markov decision process (SMDP) RL. addition a novel workload...

Maintaining safe chip and device skin temperatures in small form-factor mobile devices (such as smartphones tablets) while continuing to add new functionalities provide higher performance has emerged a key challenge. This paper presents Therminator, an early stage, fast, full-device thermal analyzer, which generates accurate steady-state temperature maps of the entire smartphone starting from Application Processor other components, extending itself. The analysis is sensitive detailed...

A hybrid electrical energy storage (HEES) system consists of multiple banks heterogeneous (EES) elements placed between a power source and some load devices providing charge retrieval functions. For an HEES to perform its desired functions 1) reducing electricity costs by storing obtained from the grid at off-peak times when price is lower, for use peak instead that must be bought then higher prices, 2) alleviating problems, such as excessive fluctuation undependable supply, which are...

Compared with the conventional homogeneous electrical energy storage (EES) systems, hybrid (HEES) systems provide high output power and density as well conversion efficiency low self-discharge at a capital cost. Cycle of HEES system (which is defined ratio which delivered by to load device supplied source system) one most important factors in determining overall operational cost system. Therefore, EES banks within should be prudently designed order maximize cycle efficiency. However, not...

Electrical energy is high-quality form of energy, and thus it beneficial to store the excessive electric in electrical storage (EES) rather than converting into a different type energy. Like memory devices, no single EES element can fulfill all desirable requirements. Despite active research on new technologies, not likely have an ultimate high-efficiency, high-power/energy capacity, low-cost, long-cycle life near future. We propose HEES system that consists two or more heterogeneous...

The thermal management is a crucial design problem for mobile devices because it greatly affects not only the device reliability, but also leakage energy consumption. Conventional dynamic (DTM) techniques work well computer systems. However, due to limitation of physical space in devices, coupling effect between major heat generation components, such as application processor (AP) and battery, plays an important role determining temperature inside package. Due this effect, behavior one part...

The thermal management is a crucial design problem for mobile devices because it greatly affects not only the device reliability, but also leakage energy consumption. Conventional dynamic (DTM) techniques work well computer systems. However, due to limitation of physical space in devices, coupling effect between major heat generation components, such as application processor (AP) and battery, plays an important role determining temperature inside package. Due this effect, behavior one part...

This paper is the first to present an efficient charge management algorithm focusing on extending cycle life of battery elements in hybrid electrical energy storage (HEES) systems while simultaneously improving overall efficiency. In particular, it proposes apply a crossover filter power source and load profiles. The goal this filtering technique allow banks stably (i.e., with low variation) receive from and/or provide device, leaving spiky high supply or demand be dealt by supercapacitor...

Electrical energy is high-quality form of energy, and thus it beneficial to store the excessive electric in electrical storage (EES) rather than converting into a different type energy. Like memory devices, no single EES element can fulfill all desirable requirements. Despite active research on new technologies, not likely have an ultimate high-efficiency, high-power/energy capacity, low-cost, long-cycle life near future. We propose HEES system that consists two or more heterogeneous...

Compared with the conventional homogeneous electrical energy storage (EES) systems, hybrid (HEES) systems provide high output power and density as well conversion efficiency low self-discharge at a capital cost. Cycle of HEES system (which is defined ratio which delivered by to load device supplied source system) one most important factors in determining overall operational cost system. Therefore, EES banks within should be prudently designed order maximize cycle efficiency. However, not...

Mobile cloud computing (MCC) offers significant opportunities in performance enhancement and energy saving mobile, battery-powered devices. An application running on a mobile device can be represented by task graph. This work investigates the problem of scheduling tasks (which belong to same or possibly different applications) an MCC environment. More precisely, involves following steps: (i) determining offloaded cloud, (ii) mapping remaining onto (potentially heterogeneous) cores device,...

FinFET device has been proposed as a promising substitute for the traditional bulk CMOS-based at nanoscale, due to its extraordinary properties such improved channel controllability, high ON/OFF current ratio, reduced short-channel effects, and relative immunity gate line-edge roughness. In addition, near-ideal subthreshold behavior indicates potential application of circuits in near-threshold supply voltage regime, which consumes an order magnitude less energy than regular strong-inversion...

Hybrid electrical energy storage (HEES) systems are composed of multiple banks heterogeneous (EES) elements with distinctive properties. Charge replacement in a HEES system (i.e., dynamic assignment load demands to EES banks) is one the key operations system. This paper formally describes global charge (GCR) optimization problem and provides an algorithm find near-optimal GCR control policy. The formulated as mixed-integer nonlinear programming problem, where objective function efficiency....

This paper is the first to present a comprehensive analysis of profitability hybrid electrical energy storage (HEES) systems while further providing HEES design and control optimization framework maximize total return on investment (ROI). The solution consists two steps: (i) Derivation an optimal management policy daily cost saving (ii) Optimal system amortized annual profit under budget volume constraints. We consider comprised lead-acid Li-ion batteries for case study. achieves ROI up 60%...

In this paper, we present a power density analysis for 7nm FinFET technology node, including both near-threshold and super-threshold operations. We first build Liberty-formatted standard cell library by selecting the appropriate number of fins pull-up pull-down networks each logic cell. The layout then is characterized based on lambda-based design rules devices. Finally, node analyzed compared with state-of-the-art 45nm CMOS different circuits. Hspice results show that circuit at least 10 to...

Emerging mobile systems integrate a lot of functionality into small form factor with energy source in the rechargeable battery. This situation necessitates accurate estimation remaining battery such that user applications can be judicious on how they consume this scarce and precious resource. paper thus focuses estimating Android OS-based systems. proposes to instrument kernel order collect report subsystem activity values based real-time profiling running applications. The information along...

Hybrid electrical energy storage (HEES) systems, composed of multiple banks heterogeneous (EES) elements with their unique strengths and weaknesses, have been introduced to efficiently store retrieve while attaining performance metrics that are close respective best values across constituent EES elements. This paper is the first formally describe charge allocation problem provide a systematic solution method aiming at maximum efficiency, which performing proper distribution incoming power...

Zhang dynamics (ZD) and gradient (GD) are both effective methods for online problems solving. By combining ZD GD methods, an innovative ZG (Zhang-gradient) control method is thus proposed investigated in this paper, which applied to ship course tracking the first time. Firstly, a constant parameter setting, we design ZD-based controller solve tracking-control problem of system with no singularity appearing. Then, time-varying generally singularity-containing such system. Simulation results...

Hybrid electrical energy storage (HEES) systems consisting of heterogeneous (EES) elements are proposed to exploit the strengths different EES and hide their weaknesses. The cycle life is one most important metrics. directly related state-of-health (SoH), which defined as ratio full charge capacity an aged element its designed (or nominal) capacity. SoH degradation models battery in previous literature can only be applied charging/discharging cycles with same state-of-charge (SoC) swing. To...

Abstract Inherent compliance equips soft robotic arms with such advantages as incomparable flexibility, good adaptability, and safe interaction the environment, etc. However, strong nonlinearity also brings challenges to predict their dynamic behaviors. This work presents a simplified model of an underwater arm which has three fiber-reinforced hydraulic chambers distributed symmetrically in each section. By controlling pressures chambers, can perform complex spatial motion multiple degrees...