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In this study, a new method is presented for producing two-phase AC output, from a single-phase AC input, based on the studies performed in [1] and also other novel techniques. Initially, the main idea behind the proposed method is presented and discussed, and then a practical switching and circuitry configuration, in order to achieve the aims of the idea is presented. Finally, simulation is performed...
Traffic classification plays a significant role on efficient traffic management, traffic inspection, service class mapping, inspection of security and errors and network charging. Supervised machine learning algorithms were previously applied to internet traffic classification. However, they suffer from understandability and interpretability issues. To improve the understandability of the classification...
In this paper we propose a distributed approach for localization in wireless sensor networks using a mobile beacon based on Particle Filter (PF) and Extended Kalman Filter (EKF). The algorithm has two phases. In the first phase, each node localizes itself using messages received from the mobile beacon. In the second phase nodes cooperate with each other to improve their estimations of their locations...
Matrix converters are gaining attentions due to their direct AC/AC conversion nature, with no need of dc-link. In this study, a method, using the Genetic Algorithm (GA) optimization process is presented, in order to improve the quality of output voltage and input current waveforms. The proposed method results in significant improvement of quality, in terms of total harmonic distortion, in both the...
This paper presents a group decision model for evaluating and selecting intelligent building systems under uncertainty. Linguistic variables approximated by fuzzy numbers are used for dealing with the decision maker's subjective assessments. Pairwise comparison is adopted for reducing the cognitive burden of the decision maker in the evaluation process. A group decision model is developed for producing...
This paper presents a fuzzy approach for evaluating the performance of supply chain based on Internet of Things (IoT). The multi-dimensional nature of the evaluation process is handled in the context of multicriteria analysis. Linguistic terms approximated by triangular fuzzy numbers are used to tackle the subjectiveness and imprecision of the human evaluation process. An efficient algorithm is developed...
High penetration levels of stochastic renewable sources introduce variability into power systems that result in voltage and frequency regulation difficulties. As the cost of fossil fuels increase and governments mandate large renewable-energy portfolios, new engineering approaches will be necessary to compensate for this variable generation. Today renewable energy penetration levels are often limited...
This paper will present the design of collective feedback controllers for the integration of renewable energy into networked DC bus microgrids. These feedback controllers are based on a single DC bus microgrid because the networked DC bus microgrids are self-similar. As a result, these feedback controllers are divided into two types. Type 1 is based on a feedback guidance command to determine the...
The personal area network (PAN) coordinator periodically transmits beacon frames to coordinator nodes as well as the coordinator nodes periodically transmit beacon frames to device nodes in the cluster tree topology of IEEE 802.15.4. The challenge in cluster tree network is the collisions between beacons or even between beacon and data frames, which degrades the network performance. In order to improve...
Radio tomgographic imaging (RTI) is a method of imaging the attenuation caused by object's obstruction within the area surrounded by wireless sensor nodes. The image reconstruction of RTI is an ill-posed problem because the pixels are more than the RSS measurements. Therefore, conventional methods such as least square method are not applicable because the solutions amplify the noise by dividing small...
IEEE802.11s draft proposes a new medium access control function-mesh deterministic access (MDA), which is mainly used for single-channel wireless mesh local area network (LAN). To provide high performance and network capacity for wireless mesh LAN, this paper develops an algorithm for MDA to work well on multi-channel wireless mesh LAN. To completely avoid the collisions between control packets and...
In ac power systems, including micro-grids, it is important to regulate the amplitude and frequency of the voltages throughout the system. Many of the existing and proposed control strategies for micro-grids are patterned after the classic ac power system. That is, frequency regulation is achieved by designing micro-sources (commonly called Distributed Energy Resources or DERs) to exhibit an output-frequency-versus-power...
In the present world wireless and mobile communications have become a part and parcel of our modern life. As in third generation (3G) technology UMTS (Universal Mobile Telecommunication Systems) is tend to provide all kinds of service for example, data rate, audio, video etc, it needs improved Quality of Service (QoS). Forward Access Channel, one of the downlink transport channel, carries both control...
Wireless Body Area Networks (WBAN) is based on short-range wireless communication and low power consumption technologies. The network consists of heterogeneous nodes with different sensors. In order to satisfy the requirements for a wide range of data rate, we propose an adaptive data transmission scheme based on the time division multiple access (TDMA) method in this paper. The proposed scheme can...
In this paper, an indoor low-speed airflow energy harvesting system based on aerodynamic flutter is proposed to power up Wireless Sensor Networks (WSNs). Steady mechanical vibration always can be observed due to the aerodynamic forces while airflows pass through flexible belt-like structure. Oscillating electromagnetic resonator has been designed to covert mechanical power into electricity according...
Geographic routing algorithms are promising in wireless sensor network due to their scalability. However, research activities carried out in the last decade are still not able to implement geographic routing in realistic environments. Majority of geographic routing algorithms use face routing on a planar graph where the planarization relies on the assumption that each sensor node has idealized communication...
Classification algorithms are popular data mining methods that are widely used in intrusion detection systems. However, they tend to show good performance on off-line data and their accuracy drop when they are deployed to realtime intrusion detection systems that receive data streams constantly. In other words, the problem with a conventional classifier model, when applied to realtime detection systems,...
This paper reports a microfluidic-based telemedicine system for the determination of insulin, an important indicator for clinical diagnosis of diabetes. The telemedicine system conveys the assay results digitally to established healthcare facilities, where trained medical professionals can directly assist the detection process and provide diagnosis through the Internet. The integrated polydimethysiloxane...
This paper presents a new current-tunable current-mode universal biquadratic filter with two inputs and two outputs using one modified current-controlled current differencing transconductance amplifier, two grounded capacitors and one grounded resistor. The proposed circuit provides following advantages: realization of lowpass, bandpass, highpass, bandstop and allpass current responses; orthogonal...
Welcome to the Second Annual IEEE International Conference on Cyber Technology in Automation, Control, and Intelligent Systems (IEEE-CYBER 2012)! Cyber technology has grown tremendously in recent years as new generations of internet-friendly automation systems continue to usher in fundamental changes to our everyday lives in such areas as healthcare, energy, telecommunication, environment, and manufacturing...
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