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We propose an analytical model to formally define the lifetime of Wireless Sensor Networks by considering various input factors including remaining energy, link quality, and location of the sensor nodes in the network. The model derives an expression for lifetime estimation on the basis of distribution of sensor nodes in the deployment area. The proposed model can be used to evaluate the performance...
Due to the non-liner, poor selectivity and cross-sensitivity of the combustible gas in the sewer, an analysis prediction model of the combustible gas in the sewer has been established based on the PSO-SVR machine, the model has introduced a new particle swarm algorithm to support the vector regression machine so that it can optimize the important parameters, realizing the automatic determination of...
This study extended the job demands-resources model by investigating the different impact of challenge and hindrance stressors on vigor (key dimension of work engagement) and exhaustion (key dimension of job burnout). Data was collected from 199 nurses of a hospital in a two-time-period survey with a three-month time lag. Results supported those theoretical extensions that the relationship between...
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