We report far-infrared Herschel observations obtained between 70 μm and 500 μm of two star-forming dusty condensations, [HKM99] B1-bS and [HKM99] B1-bN, in the B1 region of the Perseus star-forming cloud. In the western part of the Perseus cloud, B1-bS is the only source detected in all six PACS and SPIRE photometric bands, but it is not visible in the Spitzer map at 24 μm. B1-bN is clearly det...

We consider the caching of content in the mobile devices in a wireless network using maximum distance separable (MDS) codes. We focus on a small cell, served by a base station (BS), where mobile devices arrive and depart according to a Poisson birth-death process. Users requesting a particular file download coded symbols from caching devices using device-todevice communication. If additional sy...

Context. This is the first step in a project to combine studies of eclipsing binaries and oscillating stars to probe the interior of Blue Stragglers (BS). This may imply a way to discriminate observationally between different birth mechanisms of BS stars. Aims. We study the open cluster NGC2506 which contains oscillating BS stars and detached eclipsing binaries for which accurate parameters can...

Unmanned aerial vehicles (UAVs) have attracted great research attention due to their flexibility. In this paper, the use of UAVs in wireless sensor networks as an energy transmitter and a data collector is investigated. The UAV first charged from charging station, such base station (BS), before it flies sensors for collection. Upon arrival, charges via power transfer (WPT) downlink, followed by...

With advances in consumer electronics and wireless communications, wireless sensors will be placed everywhere in future’s smart home to provide the safety and convenience for consumers. A PC connected with a Base Station (BS) will work as a control center for gathering and handling the data sensed from physic environment in the home. Because of the network area of approximately 20m×20m in the h...

A novel noise subspace based method is applied to the minimum localization system using time-of-arrival (TOA) measurements from three base stations (BS). Since the distance measurement between the mobile station (MS) and the BS bears analogy to the multidimensional similarity (MDS) between their coordinates, we express the MS coordinate as the linear combination of the BSs’ coordinates, where t...

A major concern of cellular and PCS-based wireless location systems is the effect of the harsh propagation environment, particularly non-line-of-sight (NLOS) propagation. In order to improve location accuracy under such conditions, this paper proposes a novel location technique that estimates the true, or line-of-sight (LOS), ranges based on NLOS range measurements. The algorithms, designed for...

The term device-to-device (D2D) communications refers to direct short-range communications between terminals of a mobile network, without the intermediate transmission to a base station (BS). Differing from conventional approaches, such as Bluetooth and WiFi-Direct, D2D communications utilize licensed spectrum with quality of service (QoS) guarantees, while no manual network detection-selection...