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Preparation of Fe3O4-Embedded Poly (styrene)/Poly (thiophene) Core/Shell Nanoparticles and their Hydrogel Patterns for Sensor Applications

ABSTRACT

This research describes the preparation and sensor applications of multifunctional mono disperse, Fe3O4 nano particles-embedded poly(styrene)/poly(thiophene) (Fe3O4-PSt/PTh), core/shell nano particles. Monodisperse Fe3O4-PSt/PTh nano particles Continue reading

Pattern Switchable Antenna System Using Inkjet-Printed Directional Bow-Tie for Bi-Direction Sensing Applications

ABSTRACT

In this paper, we propose a paper-based pattern switchable antenna system using inkjet-printing technology for bi-direction sensor applications. The proposed antenna system is composed of two directional bow-tie antennas and a switching network. Continue reading

Design and Implementation of a RF Powering Circuit for RFID Tags or Other Batteryless Embedded Devices

ABSTRACT

A RF powering circuit used in radio-frequency identification (RFID) tags and other batteryless embedded devices is presented in this paper. The RF powering circuit harvests energy from electromagnetic waves and converts the RF energy Continue reading

Estimating the Lifetime of Wireless Sensor Network Nodes through the Use of Embedded Analytical Battery Models

ABSTRACT

The operation of Wireless Sensor Networks ( WSN s) is subject to multiple constraints, among which one of the most critical is available energy. Sensor nodes are typically powered by electrochemical batteries. The stored energy in battery devices Continue reading

BSMR: Byzantine-Resilient Secure Multicast Routing in Multi-hop Wireless Networks

ABSTRACT

Multi-hop wireless networks rely on node cooperation to provide unicast and multicast services. The multi-hop communication offers increased coverage for such services, but also makes them more vulnerable to insider (or Byzantine) attacks coming Continue reading

A Network-Aware Distributed Membership Protocol for Collaborative Defense

ABSTRACT

To counteract current trends in network malware, distributed solutions have been developed that harness the power of collaborative end-host sensors. While these systems greatly increase the ability to defend against attack, this comes at the cost Continue reading

Bluetooth-base Worm Modeling And Simulation

ABSTRACT

Bluetooth is one of the most popular technologies in the world in the new century. Meanwhile it attracts attackers to develop new worm and malicious code attacking Bluetooth wireless network. So far the growth of mobile malicious code is very fast Continue reading

Radio/ Antenna Mounting System for Wireless Networking under Row-Crop Agriculture Conditions

ABSTRACT

Interest in and deployment of wireless monitoring systems is increasing in many diverse environments, including row-crop agricultural fields. While many studies have been undertaken to evaluate various aspects of wireless monitoring and networking, Continue reading

Antenna Allocation in MIMO Radar with Widely Separated Antennas for Multi-Target Detection

ABSTRACT

In this paper, we explore a new resource called multi-target diversity to optimize the performance of multiple input multiple output (MIMO) radar with widely separated antennas for detecting multiple targets. In particular, we allocate antennas of the MIMO Continue reading

Precise Calibration of a GNSS Antenna Array for Adaptive Beamforming Applications

ABSTRACT

The use of global navigation satellite system (GNSS) antenna arrays for applications such as interference counter-measure, attitude determination and signal-to-noise ratio (SNR) enhancement is attracting significant attention. However, precise antenna array Continue reading

A Compact Annular Ring Microstrip Antenna for WSN Applications

ABSTRACT

A compact annular ring microstrip antenna was proposed for a wireless sensor network (WSN) application in the 2.4 GHz band. In this paper the major considerations of the conformal antenna design were the compact size and the impact on Continue reading