An intermittent or restriking earth fault is a special type of that common mostly in compensated cable networks. A great deal effort has gone into protection against this fault. However, locating not received much attention. Therefore, there need to have reliable method for repair the damaged cable. In paper, principles new developed transient faults on distribution networks are presented. The ...

Papers published in Hydrology and Earth System Sciences Discussions are under open-access review for the journal Hydrology and Earth System Sciences Abstract Groundwater in the Triassic Sherwood Sandstone aquifer, Liverpool, UK, has locally elevated chloride concentrations (∼4000 mg/l) in parts of the coastal region although there is freshwater right up to the coast line in other areas. The aqu...

This paper proposes a one-terminal traveling wave (TW)-based transmission line earth fault distance protection function. It only needs the detection of first incident modal fault-induced TWs, so that, challenging wavefronts reflected from point is not required. Both sampling frequency effect and inaccuracies on propagation velocity are considered in order to define zone. Simulated records were ...

To evaluate the earth seismic response due to earthquake effects, ground response analyses are used to predict ground surface motions for development of design response spectra, to compute dynamic stresses and strains for evaluation of liquefaction hazards, and to determine the earthquake induced forces that can lead to instability of earth and earth-retaining structures. Most of the analytical...

This paper is devoted to the navigation tasks for space robots operating in the neighborhood of unstable libration points of the Earth-Sun system in the near-Earth space. The motion of robot in space is examined under a circular restricted three-body problem. The possibility of a space robot maneuvering in the near-Earth space with return to the neighborhood of a collinear libration point and s...

Fault management is one of the key technologies that enable distributed and disaggregated mission architectures wherein multiple vehicles work cooperatively and autonomously in a cluster or formation, a typical mission concept involving small satellites. In this paper, we describe a software architecture, called Separable Architecture for Fault Isolation and Recovery (SAFIR), which addresses fa...

The primary intention of NASA’s Remote Exploration and Exploration (REE) project is to use commercial off-the-shelf, scalable, low-power, fault-tolerant, high-performance computation in space. Most of the faults caused by the radiation environments in regions of space of interest to REE (Deep Space, Low Earth Orbit) are transient, single event effects. Some of these faults can cause errors at d...

The use of metalevel architectures for the implementation of fault-tolerant systems is today very appealing. Nevertheless, all such fault-tolerant systems have used a general-purpose metaobject protocol (MOP) or are based on restricted reflective features of some object-oriented language. According to our past experience, we define in this paper a suitable metaobject protocol, called FT-MOP for...