Spring is a highly modular, distributed, object-oriented operating system. This paper describes the goals of the Spring system and provides overviews of the Spring object model, the security model, and the naming architecture. Implementation details of the Spring microkernel, virtual memory system, file system, and UNIX emulation are supplied.

groundwater contamination by nitrate is a globally growing problem due to the population growth and increase of demand for food supplies.increasing nitrate concentrations in soil solution and leaching into the ground water table cause water pollution and disturbs the ecological balance. in addition to natural nitrogen cycle, nitrate can be entered to soil and water from the human waste, urban a...

in hard disk drives (hdd), it is necessary to decrease the flying height (fh) between the head and the disk (currently, fh is around 3-5 nm) so as to increase recording densities. retaining the solid lubricant has become a difficult proposition owing to intermittent contact between the surfaces. ztmd and z are used as solid lubricant to lubricate these interfaces. in this paper, the behavior of...

1 The medical staff might not have to be represented here since they only enter what factors that should be monitored and so they can be seen as the same entity as the nurses' station.

This paper discusses two approaches to modeling helical suspension springs for use in a dynamic finite element compressor model. The first approach represents the spring's stiffness characteristics with a simple spring element matrix. The appropriate spring constants are calculated using a separate finite element model of the spring. The spring modeling procedure is described and supplemented w...

A new mechanical model of isolated muscle is proposed in which spring with variable slack length is the force-generating element. Based on the review of experimental studies in isolated muscle, it is suggested that spring slack length Xo is the control variable in the model and is a function of motor unit firing rate. In the presence of sensory feedback, the Sliding Spring model is equivalent t...

Using data from the contiguous USA, the relationship between mean and standard deviation of daily air temperature was estimated on a monthly timescale from 1948 to 1997. In general, there is either an inverse relationship or a weak relationship between mean and standard deviation. For both daily maximum and daily minimum air temperature, the inverse relationship is spatially coherent for one-th...