Relevant bibliographies by topics / And Communications / Dissertations / Theses
To see the other types of publications on this topic, follow the link: And Communications.

Dissertations / Theses on the topic 'And Communications'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'And Communications.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Kodikara, Patabandi C. K. "Multimedia communications over 3G wireless communication systems." Thesis, University of Surrey, 2004. http://epubs.surrey.ac.uk/844270/.

Full text
Abstract:
This thesis addresses the transmission of video over third generation radio access networks. The first part of the thesis investigates the capabilities of Universal Terrestrial Radio Access Networks (UTRAN) in terms of the provision of multimedia communications. The error performance and traffic requirements of real-time video transmission over circuit switched and packet switched connections are examined. The effect of network parameter settings upon video performances is evaluated, and optimum radio bearer configurations for the transmission of video are derived. A method of estimating received video quality after transmission over error prone environments is developed. The quality estimation is based on a distortion model, which accurately models the overall distortion seen in decoder frame reconstruction. This includes quantisation distortion, concealment distortion, and error propagation. Based on the developed performance model, optimum MTU (Maximum Transfer Unit) size for efficient wireless video communications over a packet switched access network is derived. The second part of the thesis investigates quality enhancement techniques for multimedia traffic transmitted over wireless channels. Quality enhancement is achieved at three levels of the transmission process: link level, application level and system level. Link level quality enhancement techniques are designed to optimise the allocation of link level parameter values according to the media characteristics. A novel Unequal Error Protection scheme and a novel Unequal Power Allocation scheme are designed to exploit the inherent diversity in the subjective importance of different sections of compressed media. The algorithms are developed and analysed for transmission of video over 3G wireless systems. The effectiveness of these algorithms is demonstrated through the results of simulated transmission over a UMTS channel. Application level quality enhancement techniques are designed to explore the time-varying nature of the wireless channel. A number of link adaptation schemes are proposed for real time video communication and real-time video streaming over 3G wireless systems. These algorithms are designed to enhance the perceptual video quality, and the system utilisation. This is achieved by adapting the allocated radio network parameters and the source parameters, according to a feedback channel condition. Simulation results show a significant performance improvement compared to non-adaptive schemes. Finally, system level adaptation techniques are designed for efficient radio resource allocation in multi-user scenarios. Two adaptive resource allocation schemes are proposed and analysed for real-time video communications in a UMTS system. The proposed algorithms are shown to provide improved performances in terms of average received video quality and user satisfaction. Key words: Wireless Communication, Multimedia communication. Video Transmission.
APA, Harvard, Vancouver, ISO, and other styles
2

Bezuidenhout, Quintus. "Satellite communications strategy selection for optimal LEO satellite communication." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71930.

Full text
Abstract:
Thesis (MScEng)--Stellenbosch University, 2012.
ENGLISH ABSTRACT: A low earth orbit satellite system can be useful in numerous communication applications where physical connections are not possible. Communication time available from any point on earth to the satellite is less than one hour per day. This one hour is fragmented into smaller time slots due to the satellite orbiting. This is not much time to transfer data and there is even less time available to transfer data when there are other external factors affecting the system. It is thus crucial to optimise the satellite communications link so that more data can be transferred per orbit. The goal of this thesis is to improve the performance of a low earth orbit satellite communication channel by varying certain parameters of the system, such as the protocol used, modulation scheme, packet size, transmission power etc. and then to observe how these parameters influence the system. The protocols that were chosen to be implemented are CSMA-CA, CSMA-CA with DSSS technology and Round-Robin Polling. A simulator for each protocol was designed with the Opnet platform, so that specific parameters could be changed and the results observed, in order to optimise the communications link between the satellite and ground stations. The results showed that there is no particular configuration of modulation scheme, packet size, transmission power etc. presenting the best overall solution for LEO satellite communications. It must be considered what the specific LEO satellite application would be used for and the characteristics required by that specific application. A suitable configuration must subsequently be chosen from the set of configurations available to satisfy most of the application requirements.
AFRIKAANSE OPSOMMING: ’n Satelliet met ’n lae wentelbaan kan gebruik word in verskeie kommunikasie toepassings waar fisiese verbindinge nie noodwendig moontlik is nie. Die kommunikasietyd van enige punt van aarde af na die satelliet, is minder as een uur per dag. Hierdie tyd word nog verder verklein omdat die satelliet besig is om, om die aarde te wentel. ’n Uur is glad nie baie tyd om data oor te dra nie en in realiteit is daar nog minder tyd beskikbaar as daar eksterne faktore op die sisteem inwerk. Dus is dit baie belangrik om die satelliet kommunikasiekanaal te optimiseer sodat soveel moontlik data as moontlik oorgedra kan word per omwenteling. Die doel van hierdie tesis is om die deurset van die kommunikasiekanaal van n lae wentelbaan satelliet te optimiseer, deur verskeie parameters te verander soos, protokol wat gebruik word, modulasie skema, pakkie grootte, transmissiekrag ens. en dan waar te neem hoe dit die sisteem beïnvloed. Die protokolle wat geïmplementeer is, is CSMA-CA, CSMA-CA met DSSS tegnologie en Round-Robin Polling. ’n Simulator vir elke protokol was ontwerp in die Opnet simulasie platform, sodat die spesifieke parameters verander kon word om die resultate te bestudeer met die doel om die kommunikasiekanaal tussen die satelliet en grond stasies optimaal te benut. Die resultate het bewys dat daar geen spesifieke konfigurasie van modulasie skema, pakkie grootte, transmissiekrag ens. is wat die algehele beste oplossing is nie. Die spesifieke applikasie waarvoor die lae wentelbaan satelliet gaan gebruik word moet geanaliseer word sowel as die spesifieke karakteristieke van daai applikasie. Daarvolgens moet n unieke konfigurasie opgestel word wat meeste van die applikasie se behoeftes bevredig.
APA, Harvard, Vancouver, ISO, and other styles
3

Radford, Benjamin. "Misinformation in eating disorder communications| Implications for science communication policy." Thesis, State University of New York at Buffalo, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1546959.

Full text
Abstract:

Though eating disorders are a serious public health threat, misinformation about these potentially deadly diseases is widespread. This study examines eating disorder information from a wide variety of sources including medical journals, news reports, and popular social activist authors. Examples of misinformation were identified, and three aspects of eating disorders (prevalence, mortality, and etiology) were chosen as key indicators of scientific illiteracy about those illnesses. A case study approach was then adopted to trace examples of misinformation to their original sources whenever possible. A dozen examples include best-selling books, national eating disorder information clearinghouses; the news media; documentary feature films; and a PBS television Nova documentary program. The results provide an overview of the ways in which valid information becomes flawed, including poor journalism, lack of fact-checking, plagiarism, and typographical errors. Less obvious—and perhaps even more important—much of the misinformation results from scientific research being co-opted to promote specific sociopolitical agendas. These results highlight a significant gap in science communication between researchers, the medical community, and the public regarding these diseases, and recommendations to address the problem are offered.

APA, Harvard, Vancouver, ISO, and other styles
4

Rajapakshalage, D. (Dhanushka). "Infrastructure based communication architecture to facilitate autonomous driving and communications." Master's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201909242926.

Full text
Abstract:
Abstract. The traditional autonomous vehicle (AV) architecture places a heavy burden on graphics processing units of the vehicle due to heavy signal processing requirements. Ultimately this results in performance degradation in AVs. This is mainly due to advanced sensors, which enable the vision for AVs, like Light Detection and Ranging (LiDAR), radars and cameras. In most of the AV models accepted by many leading automobile companies, LiDAR plays a significant role. It generates a high definition (HD) point cloud of the surroundings to obtain a precise map. AV makes decisions based on that by processing Terabyte (Tb) scale data within the AV. Still, vehicle-mounted LiDARs are not capable of providing information beyond a human driver’s vision. To provide a solution for the above-mentioned drawbacks of the traditional AVs, we propose an infrastructure based communication architecture to facilitate autonomous driving and communications. A set of coordinated LiDAR modules with integrated transceivers, which are mounted at an elevation with a bird’s eye view, can provide a much larger field of vision (FoV). Decisions are taken from a centralized body. We prove the technical feasibility of the system from sensing and communication point of view. The proposed architecture can play a supportive role with traditional AV architectures and it can be applied to many cases such as to automate harbours and factory floors. In the second part of the thesis, we address a resource allocation problem with ultra-reliable and low latency communication (URLLC) for a factory floor. We have analytically proven the capability of the proposed system to establish a reliable (packet error probability less than 10^(-5)) and low latency (less than 1 ms transmission delay) links with sufficient throughput (kilobit scale) using a convex optimization problem. Latency, throughput and reliability variations are studied under the short packet transmission of the proposed system.
APA, Harvard, Vancouver, ISO, and other styles
5

Murphy, Melvin Murphy. "Internal Strategies for Assessing Organizational Communication Channel Effectiveness." ScholarWorks, 2017. https://scholarworks.waldenu.edu/dissertations/3406.

Full text
Abstract:
Evolving communication technology, the increased volume of information needed by businesses, and the intensified competitive environment have made internal company communication more critical to business success. The purpose of this multiple case study was to explore strategies used by managers and leaders of 3 law firms in the Commonwealth of Virginia for assessing the effectiveness of their organization's internal communication channels. The participating firms were recognized by their peers as being exceptionally well-managed. Data from interviews and company documents were analyzed through the conceptual lens of the channel expansion theory and the use of software coding to identify patterns and themes. Three important themes emerged: informal assessment strategies, indirect assessment strategies, and efficient versus timely assessments. The first theme suggested the effectiveness of an informal assessment strategy, depending on the size and complexity of the organization. The second theme reflected the effectiveness of an indirect assessment for organizations that lack the resources to support a more direct and specific assessment process. The third theme reflected the participants' perceptions of informal and indirect assessments may be more efficient, the feedback from the assessments are often less timely. Managers may consider these themes in formulating communication policies. The findings of this case study may have implications for positive social and economic change. Small professional service firms, such as legal firms, provide important services to individuals, families, and businesses in their community.
APA, Harvard, Vancouver, ISO, and other styles
6

Gregersen, Svein Erik Søndervik. "Underwater Communications : An OFDM-system for Underwater Communications." Thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-8735.

Full text
Abstract:

In the fall 2006 NTNU (The Norwegian University and Science and Technology) initiated a strategic project in cooperations with SINTEF where the aim is to gain more knowledge about underwater acoustic communications. This study is a part of this project and focuses on a system for underwater communication. A orthogonal frequency division multiplexing (OFDM) system using differential quadrature phase shift keying (DQPSK) has been defined and implemented in MATLAB. The system has been characterized through thorough simulations and testing. Initial measurements has also been carried out in order to test the developed system on a real underwater acoustic channel and the results have been analysed.

APA, Harvard, Vancouver, ISO, and other styles
7

Puglia, Vincent. "Unified communications : the search for ROI through tomorrow's business communication solutions /." Online version of thesis, 2010. http://hdl.handle.net/1850/11590.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Vantine, Karin. "Communications sourcebook /." Online version of thesis, 1992. http://hdl.handle.net/1850/11867.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Wong, Chi Chong. "Personal communications." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/70862.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Lichtman, Marc Louis. "Antifragile Communications." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/72267.

Full text
Abstract:
Jamming is an ongoing threat that plagues wireless communications in contested areas. Unfortunately, jamming complexity and sophistication will continue to increase over time. The traditional approach to addressing the jamming threat is to harden radios, such that they sacrifice communications performance for more advanced jamming protection. To provide an escape from this trend, we investigate the previously unexplored area of jammer exploitation. This dissertation develops the concept of antifragile communications, defined as the capability for a communications system to improve in performance due to a system stressor or harsh condition. Antifragility refers to systems that increase in capability, resilience, or robustness as a result of disorder (e.g., chaos, uncertainty, stress). An antifragile system is fundamentally different from one that is resilient (i.e., able to recover from failure) and robust (i.e., able to resist failure). We apply the concept of antifragility to wireless communications through several novel strategies that all involve exploiting a communications jammer. These strategies can provide an increase in throughput, efficiency, connectivity, or covertness, as a result of the jamming attack itself. Through analysis and simulation, we show that an antifragile gain is possible under a wide array of electronic warfare scenarios. Throughout this dissertation we provide guidelines for realizing these antifragile waveforms. Other major contributions of this dissertation include the development of a communications jamming taxonomy, feasibility study of reactive jamming in a SATCOM-type scenario, and a reinforcement learning-based reactive jamming mitigation strategy, for times when an antifragile approach is not practical. Most of the jammer exploitation strategies described in this dissertation fall under the category of jammer piggybacking, meaning the communications system turns the jammer into an unwitting relay. We study this jammer piggybacking approach under a variety of reactive jamming behaviors, with emphasis on the sense-and-transmit type. One piggybacking approach involves transmitting using a specialized FSK waveform, tailored to exploit a jammer that channelizes a block of spectrum and selectively jams active subchannels. To aid in analysis, we introduce a generalized model for reactive jamming, applicable to both repeater-based and sensing-based jamming behaviors. Despite being limited to electronic warfare scenarios, we hope that this work can pave the way for further research into antifragile communications.
Ph. D.
APA, Harvard, Vancouver, ISO, and other styles
11

Steele, Robert Joshua. "Determining Communications Resource Feasibility in a Tactical Communications Network." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/32418.

Full text
Abstract:
In this paper, we present solutions concerning communications resource allocation for tactical communication networking. Given a mission definition (which defines communication needs among participants) and participant capabilities (such as processing power and bandwidth), algorithms are presented to determine if the mission as presented is feasible. The mathematical foundation of the problem is presented, and a â staticâ model to determine feasibility is shown. Further evolution of the algorithm into a â dynamicâ model and the reasons for the more demanding requirements are presented. Reasoning behind use of the Netflo algorithm in the dynamic model is also discussed. The inclusion of the algorithm in a stand-alone program is discussed, including overall program structure, graphical user interface components and alternative output (such as the generation of high level network policy). Finally, future work in this area is discussed.
Master of Science
APA, Harvard, Vancouver, ISO, and other styles
12

Oswald, Jennalande. "Transparency and City Government Communications." BYU ScholarsArchive, 2009. https://scholarsarchive.byu.edu/etd/2005.

Full text
Abstract:
This study expresses the need for a communications model created specifically for government communications that is centered on the concept of transparency. However, it also recognizes the previous research done pertaining to government communications and public relations. Importantly, the study recognizes the lack of trust in American government at city, state and federal levels and the need to improve trust, which is very closely related to transparency. The study focuses primarily on a model created in 2007 called the three-dimensional model for government communications. The model has four parts: the base of the model is the need to value transparency; the other three parts are communication practices, provision of resources, and organizational support. This study seeks to test and quantify the three-dimensional model through the creation of a survey based on the four parts of the three-dimensional model. The study seeks to determine if by following the guidelines established in the three-dimensional model a city will be more transparent. The findings come from the point of view of city communicators. Over two hundred city communicators from the largest cities in America participated in the study. The findings show that following the tenets of the three-dimensional model does in fact lead to greater transparency. Although the study only surveyed government communicators at the city level, the findings are important to government communicators at all levels of government. The study illustrates the importance of creating a communications plan that is based on transparency and the three-dimensional model. It also illustrates that the frustrations found at the federal level are similar to those faced at the city level. The study also sheds light on the need for future research pertaining to government communications.
APA, Harvard, Vancouver, ISO, and other styles
13

Kolhatkar, Madhuri. "Web-mediated communication at workplace : a case study at US WEST Communications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0001/MQ43614.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Holton, Carolyn F. "The impact of computer mediated communication systems monitoring on organizational communications content." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002440.

Full text
APA, Harvard, Vancouver, ISO, and other styles
15

Wang, Shendi. "Efficient transmission design for machine type communications in future wireless communication systems." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/23647.

Full text
Abstract:
With a wide range of potential applications, the machine type communication (MTC) is gaining a tremendous interest among mobile network operators, system designers, MTC specialist companies, and research institutes. The idea of having electronic devices and systems automatically connected to each other without human intervention is one of the most significant objectives for future wireless communications. Low data rate transmission and the requirement for low energy consumption are two typical characteristics for MTC applications. In terms of supporting low cots MTC devices, industrial standards will be more efficient if designers can re-use many features of existing radio access technologies. This will yield a cost effective solution to support MTC in future communication systems. This thesis investigates efficient MTC waveform and receiver designs for superior signal transmission quality with low operational costs. In terms of the downlink receiver design, this thesis proposes a novel virtual carrier (VC) receiver system for MTC receivers, which aims to reduce the maximum bandwidth to improve the data processing efficiency and cost-efficiency by using analogue filters to extract only sub-carriers of interest. For the VC receiver systems, we thus reduce the sampling rate in order to reduce the number of subsequent processing operations, which significantly reduces the analogue-to-digital converter (ADC) cost and power consumption while providing high signal to interference noise ratio (SINR) and low bit to error rate (BER) to support low data rate MTC devices. Our theoretical equations account for the interference effect of aliasing on the sub-carrier location, and this helps the system designer to evaluate what kind of filters and receiver sampling rate can be used to balance the energy cost and detection performance. In terms of the uplink waveform design, considering the enhanced number of MTC devices in the future communication systems, i.e. the fifth generation (5G) communications, the same tight synchronisation as used in today appears not to be cost-effective or even possible. Synchronisation signals, which aim to provide a perfect time or frequency synchronisation in the current fourth generation (4G) communication systems (known as the long-term evolution, LTE), is much more costly for low data rate MTC transmissions. The system bandwidth will be significantly reduced if a base station tries to synchronise all received signals among hundreds or thousands MTC devices in one transmission time period. In terms of relaxing the synchronisation requirements, this thesis compares and analyses the side-lobe reduction performance for several candidate multi-carrier waveforms to avoid these problems. We also propose the infinite impulse response universal filtered multi-carrier (UFMC) system and the overlap and add UFMC system, which significantly reduce the processing complexity compared with the state of the art UFMC techniques. This thesis derives closed-form expressions for the interference caused by time offsets between adjacent unsynchronised MTC users. Our analytical equations can be used in both simple and complex time-offset transmission scenarios, and enable the system designer to evaluate the SINR, the theoretical Shannon capacity and the BER performance.
APA, Harvard, Vancouver, ISO, and other styles
16

Byrne, Daniel Scott II. "A Technical Communication Internship With An eCRM Software Company: Synchrony Communications, INC." Miami University / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=miami1007737580.

Full text
APA, Harvard, Vancouver, ISO, and other styles
17

Michaels, Alan Jason. "Digital chaotic communications." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/34849.

Full text
Abstract:
This dissertation provides the conceptual development, modeling and simulation, physical implementation, and measured hardware results for a practicable digital coherent chaotic communication system. Such systems are highly desirable for robust communications due to the maximal entropy signal characteristics that satisfy Shannon's ideal noise-like waveform and provide optimal data transmission across a flat communications channel. At the core of the coherent chaotic communications system is a fully digital chaotic circuit, providing an efficiently controllable mechanism that overcomes the traditional bottleneck of chaotic circuit state synchronization. The analytical, simulation, and hardware results yield a generalization of direct sequence spread spectrum waveforms, that can be further extended to create a new class of maximal entropy waveforms suitable for optimized channel performance, maximal entropy transmission of chaotically spread amplitude modulated data constellations, and permission-based multiple access systems.
APA, Harvard, Vancouver, ISO, and other styles
18

Sen, Cem. "Digital communications jamming." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA383913.

Full text
Abstract:
Thesis (M.S. in Systems Engineering) Naval Postgraduate School, Sept. 2000.
Thesis advisor(s): Smith, Rasler W.; Lebaric, Jovan. Includes bibliographical references (p. 137-139). Also available online.
APA, Harvard, Vancouver, ISO, and other styles
19

Wang, Tiejun. "Mobile OFDM communications." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3211276.

Full text
Abstract:
Thesis (Ph. D.)--University of California, San Diego, 2006.
Title from first page of PDF file (viewed June 7, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 104-111).
APA, Harvard, Vancouver, ISO, and other styles
20

Danezis, George. "Better anonymous communications." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616002.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Asbery, Christopher W. "SMART GRID COMMUNICATIONS." UKnowledge, 2012. http://uknowledge.uky.edu/ece_etds/10.

Full text
Abstract:
Smart grid technologies are starting to be the future of electric power systems. These systems are giving the utilities detailed information about their systems in real time. One of the most challenging things of implementing smart grid applications is employing the communications into the systems. Understanding the available communications can help ease the transition to these smart grid applications. Many of the utility personnel are spending too much time trying to figure out which communication is better for their application or applications. So this thesis presents the different communication types available with discussing the different attributes in which these communication types are going to offer to the utility. Then these communication types are looked such that utilities can quickly understand how to approach the difficult task of obtaining the information from the different smart grid applications by the use of different communication options.
APA, Harvard, Vancouver, ISO, and other styles
22

Giroudeau, Rodolphe. "ordonnancement et communications." Habilitation à diriger des recherches, Université Montpellier II - Sciences et Techniques du Languedoc, 2012. http://tel.archives-ouvertes.fr/tel-00797855.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

Simensen, Thor A. "Link-11 communications." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23945.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Davies, Jonathan James. "Underwater acoustic communications." Thesis, University of Birmingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289679.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

Biddiscombe, Martin David. "Free market communications." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325627.

Full text
APA, Harvard, Vancouver, ISO, and other styles
26

Sheriff, Ray E., A. Donner, and A. Vanelli-Coralli. "Satellite Communications [Editorial]." Master's thesis, Hindawi Publishing Corporation, 2007. http://hdl.handle.net/10454/3488.

Full text
Abstract:
Yes
We are delighted to bring to you this special issue on satellite communications, which we have prepared as part of the spreading of excellence remit of the satellite communications network of excellence (SatNEx). The SatNEx project, which began in 2004, is funded for five years under the European Union¿s Sixth Framework Programme (FP6) Information Society Technologies (IST) Thematic Area. Led by the German Aerospace Center, SatNEx brings together a network of 24 partners, distributed throughout Europe, with membership drawn from ten countries. The philosophy underlying the SatNEx approach revolves around the selection of focused actions under Joint Programmes of Activities, which are carried out collectively by the partners and include research, integration, and dissemination activities. Training represents an important part of the SatNEx remit and is supported through a number of initiatives including the hosting of internship projects and an annual summer school. The call for papers resulted in a high number of submissions, from which we have been able to select 12 excellent papers dealing with the different aspects of satellite communications and navigation.
European Union
APA, Harvard, Vancouver, ISO, and other styles
27

Zou, Ding, and Ivan B. Djordjevic. "FPGA-Based Rate-Compatible LDPC Codes for the Next Generation of Optical Transmission Systems." IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2016. http://hdl.handle.net/10150/621685.

Full text
Abstract:
In this paper, we propose a rate-compatible forward error-correcting (FEC) scheme based on low-density-parity check (LDPC) codes together with its software reconfigurable unified field-programmable gate array (FPGA) architecture. By FPGA emulation, we demonstrate that the proposed class of rate-compatible LDPC codes based on puncturing and generalized LDPC coding with an overhead from 25% to 46% provides a coding gain ranging from 12.67 to 13.8 dB at a post-FEC bit-error rate (BER) of 10(-15). As a result, the proposed rate-compatible codes represent one of the strong FEC candidates of soft-decision FEC for both short-haul and long-haul optical transmission systems.
APA, Harvard, Vancouver, ISO, and other styles
28

Cournoyer, Ronald C. "Personal communications services : improving theater deployable communications for the 21st century." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA283465.

Full text
Abstract:
Thesis (M.S. in Systems Technology (Command, Control, and Communications)) Naval Postgraduate School, June 1994.
Thesis advisor(s): Carl R. Jones, Dan C. Boger. "June 1994." Includes bibliographical references. Also available online.
APA, Harvard, Vancouver, ISO, and other styles
29

Gow, Gordon Albert. "New approaches to disaster communications, towards a global communications lifeline infrastructure." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq24588.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
30

MacCallum, Irene F. "Effective communications, a study of manager/employee communications in an organization." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ49206.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
31

Poirrier, Julien. "Electronic Mitigation of Polarization Mode Dispersion." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/34469.

Full text
Abstract:
Polarization Mode Dispersion induces polarization dependent propagation. Consequently it generates a multiple imaging of the light pulse carrying the information. Its first order appears as a dual path fading channel of Maxwellian statistics. It results in harmful impairments that prevent the upgrade and installation of high bit-rate systems. The random process PMD exhibits a strong frequency dependence, so that its amelioration requires channel by channel, non-linear, adaptive mitigation. Electronic mitigation appears as a very attractive solution to overcome the limit set by the PMD. Consequently, we considered the implementation of these solutions at the receiver in the electrical domain. We verified that these linear and non-linear equalization techniques can greatly reduce the power penalty due to PMD. Equalization's performance depends highly on the type of systems considered. For the two main types of systems: thermal noise limited systems and systems exhibiting ASE (systems using optical amplifiers), we demonstrated and quantified the induced improvement (measured as power penalty reduction). The most sophisticated technique that we considered (NLC+FDE) handles any kind of first order PMD within a 4 dB margin in the thermal noise limit. This extended to a 11 dB margin in the presence of ASE. This comes from the limitation set by the signal dependence of the noise. In fact, these DSP techniques do a better job at reducing very high penalty. Consequently, for a power and ISI limited link, it may be required to associate to electronic solutions optical compensation in order to reach acceptable performance. On the other hand, for links having large power margin or exhibiting reasonable PMD, electronic techniques appear as an easy, inexpensive and convenient solution. We derived in this work the bounds to NLC performance in the presence of ASE. Therefore, we extended the usual results of the thermal noise limit to the particular case of signal dependent noise. We also made clear that optical systems, because of their noise specificities can not be studied or designed as others links. Notions such as eye opening, SNR and ISI need to be carefully defined and adapted to this case. We have provided in this work PMD dependent power penalty map for known systems. Given the link's statistics and characteristics, one can determine, following our structure, which mitigation techniques allow upgrade.
Master of Science
APA, Harvard, Vancouver, ISO, and other styles
32

Link, Jeffrey P. "Design of a serial communication protocol and bus interface chip for tactile communications." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA362194.

Full text
Abstract:
Thesis (M.S. in Electrical Engineering) Naval Postgraduate School, March 1999.
Thesis advisor(s): Douglas J. Fouts. "March 1999". Includes bibliographical references (p. 285). Also available online.
APA, Harvard, Vancouver, ISO, and other styles
33

Monaghan, Joseph Francis. "Evaluation of digital communications using the Marine Corps Communications Architecture Analysis Model." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23661.

Full text
Abstract:
Approved for public release; distribution is unlimited
The United States Marine Corps (USMC) is currently evolving to digital communications. This change has created a need for an analysis tool capable of analyzing digital architectures. Traditional communications are being supplemented, and in some cases, replaced by automated systems like the Marine Tactical Command and Control System (MTACCS) Older equipment, the PRC-77 and AN/VRC-12 family of radios, is being replaced by lighter, more efficient equipment like SINCGARS and the Digital Communications Terminal (DCT). Protocols like the Marine Tactical System (MTS) Broadcast Protocol are being implemented to orchestrate this new way of communicating. To assist in the transition, this thesis modified the Marine Corps Communications Architecture Analysis Model (MCCAAM) so it could measure the impact of changing from voice to digital communications. The Fidelity Enhancement Process (FEP) , a comprehensive methodology for model upgrades, was used to systematically modify the model. The model's usefulness is demonstrated in an analysis example by comparing three separate partially digital communications architectures.
APA, Harvard, Vancouver, ISO, and other styles
34

Taylor, Christine. "Project Manager Strategies for Strengthening Communications Within Project Teams." ScholarWorks, 2018. https://scholarworks.waldenu.edu/dissertations/6135.

Full text
Abstract:
Communication inefficiencies are among the reasons for poor or substandard performances in project teams. The purpose of this multiple case study was to explore the strategies used by project managers in the health care industry to strengthen communication within project teams. The conceptual framework for the study was McQuail's mass communication theory and Craig's communication theory. Participants of the study were 4 project managers from 2 leading medical supply companies located in the mid-Atlantic region of the United States. Data were collected using semistructured interviews and a review of company documents. The summarized interview responses were validated by participants through the use of member checking. The 3 key themes that emerged from thematic data analysis highlighted strategies that project managers used to strengthen communications with project teams: communication planning, management, and ethics. Project managers can use the study's findings to increase team members' motivation, improve project results, and bolster organizational profitability, which may positively contribute to the growth, development, and betterment of the communities served by their companies.
APA, Harvard, Vancouver, ISO, and other styles
35

Neo, Soo Sim Daniel. "Free space optics communication for mobile military platforms." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Dec%5FNeo.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
36

D'Aiello, Alan. "Communicating in the local : digital communications technology use in Brighton's gay pub scene." Thesis, University of Sussex, 2016. http://sro.sussex.ac.uk/id/eprint/61485/.

Full text
Abstract:
This thesis is an analysis of the use and impact of digital communication technology (DCT) in the Gay pub scene in the Kemptown neighborhood of Brighton, East Sussex, UK. The purpose of this work is twofold: to create a snapshot record of the everyday activities in pub spaces at a particular point in the neighborhood's history from the point of view of an American gay man, and to develop an understanding of the impact of digital communications technology (DCT) on the activities in these spaces by investigating the impact of DCT on the idea of 'gay space'. This analysis is broken down into three distinct areas of enquiry: the implementation of DCT in pub spaces by the landlords/owners of the space, the use of DCT by the patrons of these spaces, and an analysis of those spaces that have not directly engaged DCT, neither implementing DCT as a feature of the location, nor limiting its use within the space. This thesis utilizes participant observations, auto ethnographic observations, and interviews made over a period of two years and engages with the theoretical arguments around gay space: its history both within the broad context of UK history, and also with Brighton's special historical status as a gay centre within the UK; its current uses; and the potential for its evolution. This investigation of hof DCT is impacting on gay space also questions to what extent 'gay space' is maintaining a sense of physicality and to what extent an extension of DCT-enabled virtual spaces is altering our relationship to these spaces. The work examines the notion of nostalgia, ownership, and control of space and attempts through its focus on several locations in Kemptown to catalogue the many changes in structure, clientele, locale, and business success that these spaces have gone through in a fairly short time and to determine to what extent the use and influences of DCT has driven these changes. The project includes interviews with landlords and patrons of eight current and former venues in Kemptown and encompasses a group of three key participants in detail through a series of scheduled interviews and group discussions conducted during the duration of the project, and details their particular relationships to the spaces in Kemptown as well as their uses of DCT in these spaces. These participants act as a focal point for the research by helping to create a frame of reference within the work balancing the author's auto ethnographic analysis with the point of view of a local Brighton gay male, as well as contribute to and support the broader narrative of the vicissitudes of smaller pub venues by helping to highlight the historical changes in the pubs being looked at. The specific questions that this research sets out to answer are: • How is digital communicative technology (DCT) affecting self defined gay spaces in Kemptown, Brighton? • How is DCT affecting the behaviours of the patrons and owners/operators in these spaces? • How are the owners/operators of these spaces adapting to DCT? Is there evidence of owners/operators conforming to Winston's theory on the suppression of disruptive potential of new and emerging media technology (1995)? • What are the implications, challenges and opportunities presented to those spaces which are not engaging with DCT in their spaces? • Are “gay spaces” in Kemptown still relevant with the intersection of digital and physical spaces? Do these spaces meet the same requirements as they have in the past? Does DCT have the ability on its own to maintain the relevance of a venue on its own when faced off against other pressures (such as commercial or demographic pressure)? The conclusions reached in this thesis draw attention to the potential for DCT: • Acting as a form of disruptive potential of new communication technologies (Winston, 1995). • The concerns that DCT is suppressing interpersonal communications in favor of mediated discourse (Turkle, 2011, 2012, 2015). • That automobility is creating a privatization of pub spaces, along with the creation of ‘non-places' (Bull, 2004) However, in the author's analysis, there is evidence of cohabitation, and adaptation towards DCT which is reminiscent of Winston's theory of the suppression of disruptive potential of emerging communication technology, as well as a resistance response with nostalgic overtones. The conclusions are also grounded in the larger narratives of pub culture within the UK and note the challenging culture that smaller, brewer-tied and non-tied gay venues have within these changing demographics and cultural acceptance of homosexuality in general. This research adds to the broader field of research into the adaptation of communications technology by drawing attention to the effects of DCT on both spaces and their users and also highlights their effects on a subculture.
APA, Harvard, Vancouver, ISO, and other styles
37

Purushothama, Rashmi. "MULTIPATH COMMUNICATIONS USING NAMES." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-90235.

Full text
Abstract:
Increased host mobility, and multi-homing make IP address management very complex in applications. Due to host mobility, the IP address of a host may change dynamically, and also frequently. Multi-homing leads to multiple IP addresses for a single host. Name-based socket is a solution to address the complex IP address management. It relieves the applications from the overhead, and moves it to the operating system. It uses a constant name, instead of an IP address to establish a connection, thus allowing for the IP address changes during the course of the connection. The current implementation of name-based sockets is on Transmission Control Protocol (TCP). TCP restricts the connection to a single path, even when multiple capable paths are available. Multi-path communication provides higher reliability, and increase throughput. Today, multi-path connections are quite feasible, since many hosts are generally multi-homed. Multipath TCP (MPTCP) is designed to overcome the restrictions in TCP. It renders the ability to simultaneously use multiple paths between the peers. Thus, it offers higher reliability, and better throughput. One of the aims of this Master’s thesis is coalescing MPTCP and name-based socket to provide a mechanism which handles IP address management issues as well as provides high resilience, and throughput. Another important area of research is to discover ways of providing good user experience with IPv6 addresses. Given that IPv6 deployments are still in its infancy, there are high chances that IPv6 is broken. Hence, it is very important to protect the users from these IPv6 outages and thereby motivate the major websites and service providers to use IPv6. This will in turn help in the global deployment of IPv6. Happy eyeballs is a smart approach to determine the best suitable path from a dual-stack client to a dual-stack server. In order to save the users from IPv6 outages, this thesis work also focuses on implementing happy eyeballs on name-based sockets.
APA, Harvard, Vancouver, ISO, and other styles
38

Borgmann, Moritz. "Noncoherent MIMO wideband communications /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17352.

Full text
APA, Harvard, Vancouver, ISO, and other styles
39

Larsson, Johannes. "Streamline Communications in Radiology." Thesis, Linköping University, Department of Computer and Information Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-17421.

Full text
Abstract:

The background to the study was Unified Communications (UC), defined as Communications integrated to optimize business processes. A case study design is used to develop a LoFi-prototype. The prototype investigateswhat components an integrated communication solution should provide,for the people in radiology. The design was inspired by consumer products likeSkype. In these consumer products were functionality and look studied. The reason for integrate it into Sectra MEI, was that Sectra believed the system’s features could be even more useful, when used together with a communication solution. The prototype is tested on users (usability tested). To bundle the growing pile of requirements in the design process was a requirement specification produced.

APA, Harvard, Vancouver, ISO, and other styles
40

Eichhorn, Alexander Kühnhauser Winfried. "Content-aware multimedia communications /." Oslo : Unipub AS, 2008. http://www.gbv.de/dms/ilmenau/toc/570639581.PDF.

Full text
APA, Harvard, Vancouver, ISO, and other styles
41

Goudevenos, Apostolos. "Through water electromagnetic communications." Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494085.

Full text
Abstract:
Underwater communications at high frequencies have a wide variety of applications including diving, military equipment, oil and gas exploration in offshore fields as well as oceanographic mapping. Wireless communications are much more practical than hardwire communications due to the nature of the ocean environment. Currently the most commonly applied method for underwater communications is acoustic communications but have some serious disadvantages. These include low data rate, shadowing and reflections. Optical fibre communications have been offered as a viable alternative but their use is limited to small distances.
APA, Harvard, Vancouver, ISO, and other styles
42

Xie, Xiaoling. "Communications in construction design." Thesis, Loughborough University, 2002. https://dspace.lboro.ac.uk/2134/7571.

Full text
Abstract:
Construction design has become an increasingly complex synthesis activity for which effective solutions depend upon co-operative participation by a number of people. Thus communication, including the integration of specialised knowledge and negotiation of differences between team members, is a vital process for collaborative design. A questionnaire survey was initially conducted to investigate communication issues and problems, which had been highlighted from a review of the literature, in current construction design. The results confirmed that communication among the different construction team members is often difficult although of paramount important to design outcomes. Based on these results, case studies have been carried out to gain further insights into communication issues and problems, and explore why and how they are caused. Through the application of multiple approaches, a model has been developed, which suggests strategies that may help participants communicate more effectively and ultimately improve the quality of construction design outcomes.
APA, Harvard, Vancouver, ISO, and other styles
43

Jiang, Xiaofeng. "Multipoint digital video communications." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239548.

Full text
APA, Harvard, Vancouver, ISO, and other styles
44

Moulierac, Joanna Rubino Gerardo. "Agrégation des communications multicast." [S.l.] : [s.n.], 2006. ftp://ftp.irisa.fr/techreports/theses/2006/moulierac.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
45

Artusi, Denise. "5g mobile communications systems." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7563/.

Full text
Abstract:
Un sistema mobile di comunicazione è un sistema di telecomunicazioni in cui è possibile mantenere la connessione o legame tra due o più utenti, anche nelle situazioni di mobilità totale o parziale degli stessi utenti. I sistemi radiomobili si stanno evolvendo dalla creazione del 1G (prima generazione) al 4G (quarta generazione). I telefoni di ogni generazione si differenziano in quattro aspetti principali : accesso radio, velocità di trasmissione dati, larghezza di banda e sistemi di commutazione. In questa tesi si affronta il tema dei sistemi 5G , negli ambienti terrestri e satellitari , in quanto sono l'ultima evoluzione dei sistemi mobili . Si introduce il passaggio dalla prima alla connessione di quarta generazione , al fine di capire perché 5G sta per cambiare la nostra vita . Quello che mi colpisce è il sito italiano www.Repubblica.it che dice : " con la nuova generazione 5 possiamo affidare le intere porzioni nette di vita". La tecnologia cellulare , infatti , ha cambiato radicalmente la nostra società e il nostro modo di comunicare . In primo luogo è cambiata la telefonia vocale , per poi trasferirsi all' accesso dati , applicazioni e servizi. Tuttavia , Internet non è stato ancora pienamente sfruttato dai sistemi cellulari. Con l'avvento del 5G avremo l'opportunità di scavalcare le capacità attuali di Internet . Il sistema di comunicazione di quinta generazione è visto come la rete wireless reale , in grado di supportare applicazioni web wireless a livello mondiale ( wwww ). Ci sono due punti di vista dei sistemi 5G : evolutivo e rivoluzionario. Dal punto di vista evolutivo, i sistemi 5G saranno in grado di supportare wwww permettendo una rete altamente flessibile come un Adhoc rete wireless dinamica ( DAWN ) . In questa visione tecnologie avanzate, tra cui antenna intelligente e modulazione flessibile , sono le chiavi per ottimizzare le reti wireless ad hoc. Dal punto di vista rivoluzionario, i sistemi 5G dovrebbe essere una tecnologia intelligente in grado di interconnettere tutto il mondo senza limiti . Un esempio di applicazione potrebbe essere un robot wireless con intelligenza artificiale .
APA, Harvard, Vancouver, ISO, and other styles
46

Cannons, Jillian Leigh. "Topics in network communications." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p3315412.

Full text
Abstract:
Thesis (Ph. D.)--University of California, San Diego, 2008.
Title from first page of PDF file (viewed September 3, 2008). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.
APA, Harvard, Vancouver, ISO, and other styles
47

Fay, Leon. "Equalizers for communications satellites." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45992.

Full text
Abstract:
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.
Includes bibliographical references (p. 57).
This thesis investigates equalization for advanced protected satellite communications systems in development at MIT Lincoln Laboratory. Equalizers facilitate high data rate communication by correcting dispersion in the transmitter and receiver signal chains. An automated calibration procedure for finding optimal equalizers was developed. Repeated testing addressed questions about noise amplification, filter complexity requirements, and narrow band performance degradation. After examining various architectures, it was determined that the FIR filter was the best equalizer structure given the nature of the channel. The basic calibration procedure was also extended for use at high RF frequencies by using a spectrum analyzer as a tuned receiver.
by Leon Fay.
M.Eng.
APA, Harvard, Vancouver, ISO, and other styles
48

Moulierac, Joanna. "Agrégation des communications multicast." Rennes 1, 2006. http://www.theses.fr/2006REN1S151.

Full text
Abstract:
L'agrégation d'arbres multicast est une proposition qui permet d'envisager le passage à l'échelle des communications de groupes sur l'Internet dites communications multicast. Cette proposition permet pour plusieurs groupes d'utiliser un seul arbre de communication, alors qu'en multicast traditionnel, pour chaque groupe, un arbre est maintenu. Ainsi, le nombre total d'arbres dans le réseau est réduit et avec lui le nombre d'entrées de routage multicast. Dans un premier temps, nous proposons un protocole d'agrégation STA qui réalise une agrégation très rapide en évaluant peu d'arbres pour chaque nouveau groupe. Ensuite, le protocole QSTA agrège des groupes sous contraintes de bande-passante. Le protocole DMTA est un protocole d'agrégation distribuée avec un nombre réduit de messages de contrôle entre les entités d'agrégation. Finalement, le protocole TALD réalise l'agrégation des groupes dans des domaines de très grande taille où les protocoles actuels d'agrégation ne sont pas efficaces.
APA, Harvard, Vancouver, ISO, and other styles
49

Shikfa, Abdullatif. "Sécurité des communications opportunistes." Paris, Télécom ParisTech, 2010. http://www.theses.fr/2010ENST0045.

Full text
Abstract:
Dans cette thèse, nous étudions la sécurité des communications opportunistes. Dans ce nouveau type de communication, la mobilité des nœuds implique que les solutions de sécurité doivent être dynamiques et locales. Par ailleurs l’absence de connectivité bout-en-bout compromet toute solution de sécurité interactive. En outre, contrairement au routage traditionnel basé sur des adresses, les nouvelles stratégies de transmission opportunistes utilisent des informations comme le contexte d'un nœud ou le contenu d'un message pour prendre les décisions de transfert. Contexte et contenu sont des informations sensibles que les utilisateurs pourraient ne pas vouloir révéler aux autres afin de préserver leur vie privée, par conséquent, ces informations doivent être manipulées avec soin pour assurer leur confidentialité. Le conflit entre les exigences de sécurité et de routage justifie la recherche de nouveaux mécanismes de sécurité qui permettent certaines opérations sur des données chiffrées. Après avoir analysé les problèmes de sécurité dans les communications opportunistes, nous proposons une solution de sécurité complète pour la communication basée sur le contexte. Cette solution garantit non seulement la confidentialité des données et le respect de la vie privée des utilisateurs, mais aussi la correction des opérations, ce qui procure une résistance face aux attaques visant à perturber ou à endiguer la communication. Nous proposons aussi un protocole de routage basé sur le contenu qui préserve la vie privée des utilisateurs via un système de chiffrement multicouches, et une solution associée de gestion de clés, qui est locale et dépendante de la topologie
In this thesis, we investigate security in opportunistic communications. This new communication paradigm involves storing and carrying messages in addition to forwarding and impacts all security aspects of communication. Indeed, nodes’ high mobility implies that security solutions should be dynamic and local. Furthermore, delay tolerance, which is one of the main characteristics of opportunistic networks, has a strong impact from a security perspective as it amounts to the infeasibility of interactive protocols. Moreover, radically new forwarding strategies have been proposed to enable communication in opportunistic networks: parting from traditional network addresses, these enriched forwarding strategies use information such as context of a node or content of a message to take forwarding decisions. Context or content are sensitive information that users might not want to reveal to others in order to preserve their privacy, hence these information should be carefully handled to ensure their secrecy. The conflicting requirements between security and forwarding motivate the need for new security mechanisms that enable computation on encrypted data. After analyzing the security challenges in opportunistic communications, we propose a complete security framework for context-based communication. This framework features not only data confidentiality and user privacy, but also computation assurance, which provides resilience against malicious entities aiming at disrupting or subverting the communication. We also propose a privacy-preserving content-based protocol which relies on multiple encryption layers, and an associated local and topology-dependent key management solution
APA, Harvard, Vancouver, ISO, and other styles
50

Jones, David Blodgett. "Directiveness in promotional communications." Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/77808.

Full text
Abstract:
The style of a communication may influence a receiver's responses as well as the message's factual, informational content. The degree to which a promotional communication attempts to control a receiver's responses can be defined as a relational and therefore a stylistic variable. This dissertation operationalizes a stylistic variable, directiveness, as the degree to which a persuasive communication instructs the receiver how to respond in terms of action, attitudes and beliefs. Directive messages attempt to limit the receiver's responses while less directive or suggestive messages encourage the reader to make up his or her own mind. Using Attribution Theory and the Cognitive Processing Model as theoretical bases, experimental hypotheses were tested involving the impact of directive versus suggestive messages on receiver responses to one-sided and two-sided communications and high and low involvement topics. Directiveness was found to have significant impact on receiver responses depending on the receiver's level of involvement. The main implication of this research is that how a persuasive communication is worded may influence a receiver's responses to what informational content is presented.
Ph. D.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'And Communications' for other source types:
Journal articles Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography