Given a set of spatial objects, our task is to assign all the objects to the minimum number of service sites and to find the regions for building these service sites. Each service site has a coverage region (i.e., an area of service) and a capacity (i.e., a maximum number of objects it can serve, called k-constraint). The service sites can provide service for objects located within the coverage...

This study presents a hybrid approach to indoor object detection and tracking. A test area is partitioned into regions that are covered by sensors placed on the ceilings. The region location of an object is determined by these sensors using RSSI. The region determination is then followed by the exact localization of the object within the region using Building Information Modeling (BIM) and the ...

The purpose of implementation-based testing is to gain a measure of confidence in the correctness of the software by providing adequate coverage of the code. One unit of testing in object-oriented software is a class. However, classes use other classes and if class interactions form a cycle of dependencies then, to test a client class that uses an untested supplier class, stubs must be construc...

OBJECTIVE To investigate disparities in full immunization coverage across and within 86 low- and middle-income countries. METHODS In May 2015, using data from the most recent Demographic and Health Surveys and Multiple Indicator Cluster Surveys, we investigated inequalities in full immunization coverage - i.e. one dose of bacille Calmette-Guérin vaccine, one dose of measles vaccine, three dos...

In this paper, the field measurements of signal strength taken at the frequency of 2432 MHz in indoor & outdoor environments are presented and analyzed. The received signal levels from the base station were monitored manually. Total coverage area considered for the measurement campaign consisted of a mixture of different propagation environments. Based on the experimental data obtained, path lo...

The BAM and CRAM formats provide a supplementary linear index that facilitates rapid access to sequence alignments in arbitrary genomic regions. Comparing consecutive entries in a BAM or CRAM index allows one to infer the number of alignment records per genomic region for use as an effective proxy of sequence depth in each genomic region. Based on these properties, we have developed indexcov, a...

Optimizing deployment of sensors with self-healing ability is an efficient way to solve the problems of coverage, connectivity and the dead nodes in WSNs. This work discusses the particular relationship between the monitoring range and the communication range, and proposes an optimal deployment with self-healing movement algorithm for closed or semi-closed area with irregular shape, which can n...

Monitoring and surveillance are important aspects in modern wireless sensor networks. In applications of wireless sensor networks, it often asks for the sensors to quickly move from the interior of a specified region to the region’s perimeter, so as to form a barrier coverage of the region. The region is usually given as a simple polygon or even a circle. In comparison with the traditional conc...

Given a planar workpiece , the objective of region coverage is to find an ordered list of waypoints and the geometry of paths between consecutive waypoints along which the centroid of a sensor footprint can be moved to efficiently trace a minimal superset of . We consider the problem of maximally parallelizing the coverage of a contiguous rectilinear region represented by R R R ∈ ℘ by dividing ...

Owing to numerous potential applications, wireless sensor networks have been the focus of a lot of research efforts lately. In this note we study one fundamental issue in such networks, namely the coverage problem, in which we would like to determine whether a region of interest is sufficiently covered by a given set of sensors. This problem is motivated by monitoring applications in sensor net...