In wireless sensor networks nodes can be static or mobile, depending on the application requirements. Dealing with mobility pose some formidable challenges in protocol design, particularly, at link layer. These difficulties require adaptation algorithms to localize mobile and predict quality of that established them. This paper surveys current state-of-art handling mobility. It first describes existing models patterns; analyzes caused by then provides a comparative study several...

The power consumption of presently available Internet servers and data centers is not proportional to the work they accomplish. scientific community attempting address this problem in a number ways, for example, by employing dynamic voltage frequency scaling, selectively switching off idle or underutilized servers, energy-aware task scheduling. Central these approaches accurate estimation various subsystems server, particularly, processor. We distinguish between measurement techniques...

In wireless sensor networks, nodes can be static or mobile, depending on the application requirements. Dealing with mobility pose some formidable challenges in protocol design, particularly, at link and network layers. These difficulties require adaption algorithms to efficiently localize mobile predict quality of that established these nodes. An off shelf development platform uses Radio Signal Strength Indication (RSSI) is mostly selected as localization method, especially indoor...

In the last few years, interest in wireless sensor networks has increased considerably. These can be useful for a large number of applications, including habitat monitoring, structural health pipeline transportation, precision agriculture, supply chain management, and many more. Typically, network consists simple nodes which operate with exhaustible batteries, unattended. Manual replacement or recharging batteries is not an easy desirable task. Hence, how energy utilized by various hardware...

Wearable devices enable remote, long-term, and unobtrusive monitoring of patients in their everyday living working environments. Remote health often involves physical cardiac activities (exertions) order to establish correlations between the two. With recent advances sensor technologies machine learning, efficiency with which these can be recognized has been steadily improving. In this paper, we apply Convolutional Neural Networks (CNN) measurements taken wireless electrocardiograms inertial...

Live migration, the process of moving a virtual machine (VM) interruption-free between physical hosts is core concept in modern data centers. Power management strategies use live migration to consolidate services cluster environment and switch off underutilized machines save power. However, most models do not consider energy cost migration. This paper experimentally investigates factors that affect power consumption duration We KVM platform for our experiment show entails an overhead size...

Quantitatively estimating the relationship between workload and corresponding power consumption of a multicore processor is an essential step towards achieving energy proportional computing. Most existing proposed approaches use Performance Monitoring Counters (Hardware Counters) for this task. In paper we propose complementary approach that employs statistics CPU utilization (workload) only. Hence, model as random variables exploit monotonicity property their distribution functions to...

This paper addresses the signal processing aspect of wireless sensor networks. It analyzes several time and frequency domain features measurements that are taken from 3D accelerometer sensors. The represent various types movements related to humans cars. aim is obtain quantitative as well qualitative comparisons concerning expression power these in presence sources uncertainties (calibration, placement sensors, synchronization). For analysis, we define fuzzy sets membership functions for all...

Wireless sensor networks are used for structure monitoring and border surveillance. Typical applications, such as sensors embedded in the outer surface of a pipeline or mounted along supporting bridge, feature linear arrangement. Economical power use nodes is essential long-lasting operation. In this paper, we present MERR (minimum energy relay routing), novel approach to energy-efficient data routing single control center topology. Based on an optimal transmission distance, paths...

Organizing nodes into efficient clusters in wireless sensor networks facilitates data aggregation and command dissemination, but clustering is a complex costly process, since it has to be carried out distributed periodic manner. In this letter, we propose simple strategy employing an adjacency matrix, which encodes nodes' neighborhood connectivity network. Our approach enables the assignment of cluster heads for multiple rounds single step, thereby limiting cost head election child node association.

Human beings live and work in close proximity to dangerous gases. Chemical accidents often cause considerable damages human lives properties, their short- long-term impact on the environment can be high. Hence, diligent monitoring management of these gases are profound importance. In industries where chemical pose potential explosions health hazards, wired sensors installed strategic locations. some industries, employees required carry with them portable sensing devices addition. Still,...

Wearable sensors enable to monitor patients in their everyday living and working environments. However, since they generate highly personal data, protection from misuse or unauthorized use is crucial. Under certain conditions, it important examine whether the data uniquely describe deployment environment. This can be used as an additional measure certify authenticity of data. In this paper, we identify persons based on measurements wireless electrocardiograms motion sensors. We let 34...

Cost-efficient and low-power sensing nodes enable to monitor various physical environments. Some of these impose extreme operating conditions, subjecting the excessive heat or rainfall motion. Rough conditions affect stability wireless links establish cause a significant amount packet loss. Adaptive transmission power control (ATPC) enables adapt maintain stable often rely on knowledge received as closed-feedback system adjust outgoing packets. However, in presence loss, this may not reflect...

Low-power and low-cost wireless sensor networks enable scalable affordable sensing can be deployed in different environments to monitor various physical parameters. In some environments, these may have coexist interact with other systems which use the same frequency spectrum for communication. This potentially results cross-technology interference (CTI). Dynamic channel hopping is one of mechanisms that currently employed deal CTI, but its usefulness depends on selection occupation timing....

Low-power and cost-effective IoT sensing nodes enable scalable monitoring of different environments. Some these environments impose rough extreme operating conditions, requiring continuous adaptation reconfiguration physical link layer parameters. In this paper, we closely investigate the stability wireless links established between deployed on surface water bodies propose a model to predict received power. Our is based Minimum Mean Square Estimation (MMSE) relies statistics power motion...

Energy-efficency is a key concern when designing protocols for wireless sensor networks (WSN). This of particular importance in commercial applications where demonstrable return on investment crucial factor. One such application that motivated this work telemetry and control freight railroad trains. Since train has global linear structure by nature, we consider paper WSNs as having, roughly, topology. Aiming at networks, introduce two routing schemes efficiently utilize energy: Minimum...