tbe International AGN Watch, an informal consortium of over 100 astronomers, was established to coordinate multiwavelength monitoring of a limited number of active galactic nuclei ' and thus obtain comprehensive continuum and emission-tine variability data with unprecedented temporal and wavelength coverage. In this review, we summarize the principal scientific results from two completed space-...

This paper introduces a new maximum fault-tolerance barrier-coverage problem in hybrid sensor network, which consists of a number of both static ground sensors and fully-controllable mobile sensors. The problem aims to relocate the mobile sensor nodes so that the fault-tolerance of the barriercoverage of the hybrid sensor network is maximized. The main contribution of this paper is the polynomi...

The evolution of airborne lidar mapping systems has been largely driven toward ever-increasing laser pulse repetition frequencies (PRF) for higher density model applications. The greater pulse rates increase the density of points on the ground, providing a higher resolution and detailed representation of the target surface. In combination with an appropriate scanning system, they can provide mo...

Numerical-relativity (NR) simulations of compact binaries are expected to be an invaluable tool in gravitational-wave (GW) astronomy. The sensitivity of future detectors such as the Einstein Telescope (ET) will place much higher demands on NR simulations than firstand second-generation ground-based detectors. We discuss the issues facing compact-object simulations over the next decade, with an ...

Synthetic Aperture Radar Interferometry (InSAR) is an established powerful technique for change detection. Its advantages include competitive spatial resolution, accuracy in milimeter-centimeter scale and spatial coverage. However, there are limitations in using it for detecting the Earth surface changes. Line-of-sight ambiguity (1-D displacement), temporal and geometrical decorrelation (slopes...

As large-scale wireless networks continue to proliferate, a reliable way to test coverage and communicate requirements becomes increasingly important. In this paper we discuss concerns and provide guidelines to consider when developing a coverage testing methodology for large-scale wireless networks. We propose a method which complies with these guidelines and apply it to a large municipal mesh...

Modified condition/decision coverage is a structural coverage criterion requiring that each condition within a decision is shown by execution to independently and correctly affect the outcome of the decision. This criterion was developed to help meet the need for extensive testing of complex Boolean expressions in safety-critical applications. The paper describes the modified condition/decision...

The use of unmanned aerial vehicles (UAVs) will be crucial in the next generation wireless communications infrastructure. When compared to traditional ground-based solutions, it is expected that their a variety communication-based applications increase coverage and spectrum efficiency. In this paper, we provide detailed review all relevant research works as follows. This paper presents types UA...

The number of Slinky-coil horizontal ground heat exchangers (HGHEs) has been increasing in geothermal heat pump (GHP) systems due to the low initial cost. The performance of the Slinky-coils, however, has not been successfully predicted with good accuracy since the complicated shape of the Slinky-coils is not easy to model either analytically or numerically. To enable this, Fujii et al. (2012) ...

The project focuses on examining the advantages of random verification with real examples. Random verification has two necessary parts, hierarchical testbench and coverage metrics. The layered testbench allows a verifier to improve the coverage by only modifying the randomization constraints at the highest level of abstraction. Although it might take a verifier more time to build such hierarchi...