A rapid DNA analysis has been developed based on a fluorescence intensity change of a molecular beacon in a PDMS microfluidic channel. Recently, we reported a new analytical method of DNA hybridization involving a PDMS microfluidic sensor using fluorescence energy transfer (FRET). However, there are some limitations in its application to real DNA samples because the target DNA must be labelled ...

Beacon scheduling is considered to be one of the most significant challenges for energy-efficient Low-Rate Wireless Personal Area Network (LR-WPAN) multi-hop networks. The emerging new standard, IEEE802.15.4e, contains a distributed beacon scheduling functionality that utilizes a specific bitmap and multi-superframe structure. However, this new standard does not provide a critical recipe for su...

This work investigates into the design of sink location propagation in wireless sensor network with mobile sink. In our proposed work, few sensor nodes are assigning a role to propagate the sink location information to the remaining nodes. We refer such nodes as beacon nodes (BNs). We design a distributed algorithm to select BNs. The selection of BNs depends on their sensor node degree. To ensu...

We demonstrate BEACON, the simplest possible file format to exchange links. It is successfully used by more than 50 institutions to provide links to be aggregated by Wikipedia and other projects. Link servers and aggregation Although links are its most powerful feature, the WWW is primarily build of documents. The limitation to embedded, outgoing hyperlinks, instead of links as first class obje...

While IEEE 802.15.4/Zigbee is a promising technology for Wireless Personal Area Networks, several transmission problems are not yet resolved. In particular, the problem of beacon transmission interferences is causing the device connection loss to the network. In order to resolve this problem, we present a new distributed and reactive procedure for beacon collision resolution. It is an extension...

Wireless sensor networks (WS s), made of collection of small, cheap, low power sensors, have diverse applications in several domains of life. Most of their applications demand for spatial position of sensors. Beacon nodes which already know their location are mostly used to help other sensor nodes to locate their position. However localization of sensors in a hostile environment is a crucial is...

We establish tight bounds for beacon-based coverage problems, and improve the bounds for beacon-based routing problems in simple rectilinear polygons. Specifically, we show that bn6 c beacons are always sufficient and sometimes necessary to cover a simple rectilinear polygon P with n vertices. We also prove tight bounds for the case where P is monotone, and we present an optimal linear-time alg...

Presensi perkuliahan merupakan kegiatan untuk pencatatan kehadiran mahasiswa dalam proses belajar mengajar. Diantara kendala presensi di kelas adalah bagaimana memastikan bahwa memang benar dilakukan oleh yang berada tersebut. Penelitian ini bertujuan menerapkan teknologi beacon bluetooth low energy (ble) pada dikelas. Beacon perangkat kecil memancarkan sinyal melalui berisi informasi tertentu....

In this article, a time-of-flight detection technique in the frequency domain is described for an ultrasonic local positioning system (LPS) based on encoded beacons. Beacon transmissions have been synchronized and become simultaneous by means of the DS-CDMA (direct-sequence code Division multiple access) technique. Every beacon has been associated to a 255-bit Kasami code. The detection of sign...

Underwater navigation and localization using single range measurements presents low–cost alternative to well established underwater localization systems. In this paper, single range localization with respect to stationary and mobile beacon is presented. Also, observability properties of single range localization systems are given and vehicle trajectories which ensure observability are character...