Search results for " Communication"
showing 10 items of 4937 documents
A continuous-space analytical approach for relay node placement in hybrid cellular and ad hoc networks
2009
©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE." Article also available from publisher: http://dx.doi.org/10.1109/ISWCS.2009.5285305 A hybrid network is composed of a cellular component and an ad hoc component connected by a relay node, for the purpose of coverage extension and/or capacity improvement. In this paper, we analyze the capacity of such a hybrid network by employing a continuous-space analytical …
Remote service usage through SIP with multimedia access as a use case
2007
The IP Multimedia Subsystem is under deployment, as an IP-based service control and access infrastructure, but how it interconnects with residential appliances is currently unclear. With IMS access for the residential appliances they can be used as both service consumers and service providers. In this paper we present a protocol which allows residential services to be remotely invoked, through the IMS, and consumed in a different network, along with a prototype implementation and early results. With our protocol services of two distinct service protocol systems can cooperate.
Channel simulation models for mobile broadband communication systems
2009
Doktorgradsavhandling i informasjons- og kommunikasjonsteknologi, Universitetet i Agder, Grimstad, 2009 Mobile broadband wireless communication systems (MBWCS) are emerging as a solution to provide broadband services to users on the move. These systems are expected to operate in a wide variety of propagation scenarios, at different mobile speeds, and at various frequency bands. Under such a variety of requirements, flexible and efficient channel simulation models will prove fundamental for the laboratory analysis of MBWCS. Currently, most of the existing channel simulation models are either too complex as to allow for an efficient performance investigation of MBWCS, or they cannot be applie…
Robust H∞ filter design for uncertain linear systems over network with network-induced delays and output quantization
2009
Article published in the journal: Modeling Identification and Control. Also available online from the publisher: http://dx.doi.org/10.4173/mic.2009.1.3 This paper investigates a convex optimization approach to the problem of robust H∞ filtering for uncertain linear systems connected over a common digital communication network. We consider the case where quantizers are static and the parameter uncertainties are norm bounded. Firstly, we propose a new model to investigate the effect of both the output quantization levels and the network conditions. Secondly, by introducing a descriptor technique, using Lyapunov- Krasovskii functional and a suitable change of variables, new required sufficient…
LMI-based H∞ synchronization of second-order neutral master-slave systems using delayed output feedback control
2009
Submitted version of an article published in the journal: International Journal of Control, Automation and Systems. The original publication is available at www.springerlink.com: http://dx.doi.org/10.1007/s12555-009-0306-5 The H∞ synchronization problem of the master and slave structure of a second-order neutral master-slave systems with time-varying delays is presented in this paper. Delay-dependent sufficient conditions for the design of a delayed output-feedback control are given by Lyapunov-Krasovskii method in terms of a linear matrix inequality (LMI). A controller, which guarantees H∞ synchronization of the master and slave structure using some free weighting matrices, is then develop…
An Efficient Convolutional Neural Network with Transfer Learning for Malware Classification
2022
Rising prevalence of malicious software (malware) attacks represent a serious threat to online safety in the modern era. Malware is a threat to anyone who uses the Internet since it steals data and causes damage to computer systems. In addition, the exponential growth of malware hazards that affect many computer users, corporations, and governments has made malware detection, a popular issue in academic study. Current malware detection methods are slow and ineffectual because they rely on static and dynamic analysis of malware signatures and behavior patterns to detect unknown malware in real-time. Thus, this paper discusses the role of deep convolution neural networks in malware classifica…
Chasing Metaverses: Reflecting on Existing Literature to Understand the Business Value of Metaverses
2022
AbstractMetaverses refer to immersive virtual worlds in which people, places, and things of the physical world are represented by their digital representations. The wide adoption of metaverses is expected to widely disrupt the way we interact in the virtual world by elevating our online interactive experiences and bringing a plethora of implications for businesses. Following a structured literature review of related research published in the last decade, we shed light on our current understanding of metaverses and reflect on the potentially transformative value of metaverses for businesses in the near future. We draw on an established research framework to organize the insights of existing …
Investigation of data encryption impact on broadcasting visible light communications
2014
Este trabajo investiga el impacto de la encriptación y desencriptación de datos en un sistema de comunicaciones de luz visible (VLC) de difusión en interiores incrustado en la capa física. Se ha implementado el cifrado RSA para proporcionar una transmisión de datos segura en la capa física. El artículo muestra el rendimiento de la tasa de error de bits (BER) para los sistemas VLC seguros y no seguros (8 y 12 bits) para velocidades de datos de 2 y 12 Mbps. Para una BER de 10e-4 mostramos que hay penalizaciones de potencia de 2-4 dB con las VLC seguras. También se investiga el impacto de la longitud de la clave en la propagación del error y la penalización de potencia. EU Cost Action IC1101 T…
Mārketinga komunikācijas pilnveidošanas iespējas viesu namā "Naktsvijoles".
2018
Bakalaura darba tēma ir “Mārketinga komunikāciju pilnveidošanas iespējas viesu namā "Naktsvijoles"”. Bakalaura darba mērķis ir pamatojoties uz mārketinga komunikāciju teorētiskām atziņām un aptaujas rezultātiem izpētīt mārketinga komunikāciju izmantošanu viesu namā “Naktsvijoles”, atklāt nepilnības un izstrādāt priekšlikumus tās uzlabošanai. Darba pirmajā nodaļā, autors izmantojot dažādus pieejamos literatūras avotus, veic mārketinga komunikāciju un to veidu, būtību, priekšrocību un trūkumu analīzi. Otrajā darba nodaļā tika aplūkota viesu nama “Naktsvijoles” uzņēmuma darbība, struktūra un esošo mārketinga komunikāciju izmantošana, kā arī tika izstrādāta SVID analīze un darba autors izstrādā…
Mārketinga komunikāciju analīze veselības aprūpes nozarē
2015
Maģistra darba „Mārketinga komunikāciju analīze veselības aprūpes nozarē” mērķis ir, balstoties uz mārketinga komunikāciju teorētiskajām atziņām, klientu un ekspertu pētījuma rezultātiem, identificēt īpatnības mārketinga komunikāciju izmantošanai veselības aprūpes nozarē. Darbs sastāv no 3 nodaļām. Pirmajā nodaļā analizēta veselības aprūpes nozare Latvijā, kā arī mārketinga īpatnības tajā. Otrajā nodaļā apkopotas Latvijas un ārvalstu zinātnieku teorētiskās atziņas mārketinga komunikāciju jomā un paralēli veikta mārketinga komunikāciju pielietošanas analīze veselības aprūpes nozarē Latvijā. Savukārt trešajā nodaļā veikta klientu un ekspertu aptaujas rezultātu analīze. Darba noslēgumā izstrād…