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During last decade more and more old people live alone and the number of old people that need medical care is increased. The lack of doctors and the increase of the medical cost is becoming a big problem. Therefore, IT-based information systems should be implemented to help solve this problem. In this paper, we present the experimental results and evaluation of the SmartBox stimulation device for...
In recent research, estimations for condition of channels are based on either (i) physical layer parameters (e.g. SNR, RSSI etc.) or (ii) statistics of transmitted data (e.g. no of retransmissions, throughput etc.). Our research evaluates that depending upon one approach entirely while ignoring other can lead to loss of valuable information about adaptation of rate to send data. This in turn can highly...
Wireless Mesh Networks (WMNs) are currently attracting a lot of attention due to their ability to provide cost-efficient broadband wireless connectivity. In this paper, we evaluate the performance of a WMN by simulations considering packet delivery ratio (PDR), throughput and delay. For simulations, we used ns-3 simulator and Hybrid Wireless Mesh Protocol (HWMP). We evaluate the performance of the...
The Wireless Sensor Networks (WSNs) have a wide range of applications such as target detection and tracking, environmental monitoring, and tactical systems. However, lower sensing ranges result in dense networks, which brings the necessity to achieve an efficient medium access protocol subject to power constraints. Various MAC protocols with different objectives were proposed for wireless sensor networks...
Recently many researchers are working on Peer-to-Peer (P2P) networks, which are able to overcome the firewalls, NATs and other security devices without changing the network policy. P2P architectures will be very important for future distributed systems and applications. In such networks, peers are heterogeneous in providing the services and they do not have the same competence of reliability. Therefore,...
In this paper, we investigate the performance of OLSR and DSDV protocols in a highway VANET scenario. The mobility patterns of vehicles are generated by means of CAVENET (Cellular Automaton based Vehicular Network). As communication protocol simulator, is used NS3 (Network Simulator 3). The simulations are done for four different scenarios based on nodes ID. We use Throughput and Packet Delivery Ratio...
Peer to Peer (P2P) systems recently are receiving a lot of attention from the researchers. In such systems, peers are heterogeneous in providing resources and services. Peers do not have the same reliability so it is necessary to evaluate their trustworthiness for a reliable sharing of the resources and services. In this paper, we propose a fuzzy-based system for peer reliability in JXTA-Overlay P2P...
The Wireless Sensor Networks (WSNs) have a wide range of applications such as target detection and tracking, environmental monitoring, and tactical systems. However, lower sensing ranges result in dense networks, which brings the necessity to achieve an efficient medium access protocol subject to power constraints. Various MAC protocols with different objectives were proposed for wireless sensor networks...
Cluster formation and cluster head selection are important problems in sensor network applications and can drastically affect the network's communication energy dissipation. However, selecting the cluster head is not easy in different environments which may have different characteristics. In order to deal with this problem, we have proposed a system for controlling sensor speed in Wireless Sensor...
In this paper, we evaluate the performance of Ad hoc On-Demand Distance Vector (AODV) routing protocol for single and multiple traffic in MANETs. We investigate and compare the packet delivery fraction (PDF) and throughput. As network simulator, we used ns-3 and we considered random waypoint mobility model for different number of nodes and different maximum speed by sending single and multiple traffic...
Extracting essential meaning from the regulatory text helps in the automation of the Compliance Management (CM) process. CM is a process where organizations assure that the processes are run according to requirements and expectations. However, extraction of meaningful text from regulatory guidelines comes with many research challenges such as dealing with different document-format, implicit document-structure,...
MANETs are attracting attention for their potential use in several fields such as collaborative computing and multimedia communications. MANET nodes cooperate in an autonomous way by forwarding packets to each-other. Considering mobility of the terminals, routes change dynamically so routing algorithms are very important for operation of MANETs. These protocols and other algorithms are tested by simulations,...
Mobility and the absence of any fixed infrastructure make wireless Mobile Ad-hoc Networks (MANETs) very attractive for time-critical applications. In this paper, we deal with TCP congestion control for Multiple traffic in MANETs. For network simulations, we used ns-3 network simulator considering Ad hoc On-Demand Distance Vector (AODV) and Optimized Link State Routing (OLSR) routing protocols. We...
Mobile Ad hoc Networks (MANETs) are attracting attention for their potential use in several fields such as collaborative computing and multimedia communications. MANET nodes cooperate in an autonomous way by forwarding packets to each-other. Considering mobility of the terminals, the routes change dynamically so routing algorithms are very important for operation of MANETs. In this paper, we analyse...
Mobile Ad-hoc Networks (MANETs) are increasingly becoming attractive for usage in time-critical applications and collaborative computing. In this paper, we investigate the performance of a MANET test bed for different scenarios in indoor and outdoor stairs environment considering throughput and packet loss metrics. We analyze the behavior of Optimized Link State Routing (OLSR) protocol. We design...
Vehicular Ad-hoc Networks (VANETs) represent a rapidly emerging, particularly challenging class of Mobile Ad-hoc Networks (MANETs). VANETs are expected to be massively deployed in upcoming vehicles, because their use can improve the safety of driving and makes new forms of inter-vehicle communications possible as well. Because they are characterized of high mobility and dynamic topology change, congestion...
This paper investigates into the transaction management of mobile web services, which is crucial to maintaining execution correctness of services and consistency of their underlying data. We propose a relaxed set of transaction correctness criteria, called Sacred (Semantic Atomicity, Consistency, Resiliency, Durability) and design protocols for enforcing these criteria in the execution of transactions...
MicroRNAs (miRNAs) are small, non-coding and regulatory RNAs about 18 to 26 nucleotides long. Their conserved nature among the various organisms makes them a good source of new miRNAs discovery by comparative genomics approach. The study resulted in novel 75 precursor miRNAs containing 102 mature sequences belonging to 46 families in an important aquatic environmental monitoring fish (Salmo salar)...
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