In wireless sensor networks, the node faults often occurred in scenes because of severe disturbance, harsh environment and inherent weakness of the networks. In this paper, a fault tolerance directed diffusion protocol, termed fault-tolerant algorithm with recoverable nodes (FTA-RN), is proposed to extend the lifetime of the wireless sensor network based on recoverable host nodes, in which a he...

BACKGROUND The purpose of this study was to determine the extent to which measures of lower extremity strength and power contribute to the ability of older men and women to restore postural equilibrium using a single-step recovery following a large postural disturbance. METHODS The postural disturbance, which has been used as a surrogate for forward-directed falls, involved a sudden release f...

It is widely accepted that textureless surfaces cannot be recovered using passive sensing techniques. The problem is approached by viewing image formation as a fully threedimensional mapping. It is shown that the lens encodes structural information of the scene within a compact threedimensional space behind it. After analyzing the information content of this space and by using its properties we...

n-propylsulfamic acid supported onto magnetic fe3o4 nanoparticles (mnps-psa) was investigated as an efficient and magnetically recoverable catalyst for the one-pot synthesis of substituted coumarins from the reaction of coumarin with variety aromatic aldehydes in high to excellent yield at room temperature under solvent-free conditions. the magnetic nanocatalyst can be readily recovered easily ...

Timetable information is the process of determining a suitable travel route for a passenger. Due to delays in the original timetable, in practice it often happens that the travel route cannot be used as originally planned. For a passenger being already en route, it would hence be useful to know about alternatives that ensure that his/her destination can be reached. In this work we propose a rec...

Abstract Recent advances in non-volatile main memory (NVM) technology have spurred research on algorithms that are resilient to intermittent failures cause processes crash and subsequently restart. In this paper we present a Recoverable Mutual Exclusion (RME) algorithm supports abortability. Our guarantees FCFS strong liveness property: do not starve even runs consisting of infinitely many cras...

We discuss the recoverable and irrecoverable energy densities associated with a pulse at a point in the propagation medium and derive easily computed expressions to calculate these quantities. Specific types of fields are required to retrieve the recoverable portion of the energy density from the point in the medium, and we discuss the properties that these fields must have. Several examples ar...