Relevant bibliographies by topics / Computer networks. Selective dissemination of information

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Computer networks. Selective dissemination of information'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Computer networks. Selective dissemination of information"

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Bür, Kaan, and Maria Kihl. "Evaluation of Selective Broadcast Algorithms for Safety Applications in Vehicular Ad Hoc Networks." International Journal of Vehicular Technology 2011 (April 10, 2011): 1–13. http://dx.doi.org/10.1155/2011/730895.

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Just as wireless communications develop further to achieve higher performance, new application areas emerge to challenge the limits. Vehicular ad hoc networks are one of these areas, and emergency situation warning is one of their most popular applications since traffic safety is a concern for everyone. Due to the life-critical nature of emergency applications, however, it is extremely important to ensure the solutions proposed meet the standards required, such as reliable and timely delivery of the safety warning in a situation like car collision avoidance. In order to put the candidate solutions to the test and evaluate their feasibility, we adopt the approach of computer simulation. We implement four different selective broadcast algorithms used for information dissemination in vehicular ad hoc networks, and compare their performance under identical realistic simulation conditions. Our goal is to provide an evaluation focussing on the performance with respect to safety, rather than to network aspects like throughput, loss, and delay. We define four new performance criteria to address the effectiveness, efficiency, timeliness, and overhead of the broadcast algorithms in safety warning delivery. The results we obtain using these criteria help us to understand better the design requirements of a high-performance selective broadcast algorithm.
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ZHAO, Zhi-wei, Yong-gang WANG, and Jia-jun BU. "Integrated mutual selection based code dissemination for reprogramming wireless sensor networks." Journal of China Universities of Posts and Telecommunications 20, no. 1 (February 2013): 79–114. http://dx.doi.org/10.1016/s1005-8885(13)60011-4.

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Azzaoui, Nadjet, Ahmed Korichi, Bouziane Brik, and Med el Amine Fekair. "Towards Optimal Dissemination of Emergency Messages in Internet of Vehicles: A Dynamic Clustering-Based Approach." Electronics 10, no. 8 (April 19, 2021): 979. http://dx.doi.org/10.3390/electronics10080979.

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In this paper, we target dissemination issues of emergency messages in a highly dynamic Internet of Vehicles (IoV) network. IoV is emerging as a new class of vehicular networks to optimize road safety as well as users’ comfort. In such a context, forwarding emergency messages through vehicle-to-vehicle communications (V2V) plays a vital role in enabling road safety-related applications. For instance, when an accident occurs, forwarding such information in real time will help to avoid other accidents in addition to avoiding congestion of network traffic. Thus, dissemination of emergency information is a major concern. However, on the one hand, vehicle density has increased in the last decade which may lead to several issues including message collisions, broadcast storm, and the problem of hidden nodes. On the other hand, high mobility of vehicles and hence dynamic changes of network topology result in failure of dissemination of emergency packets. To overcome these problems, we propose a new dissemination scheme of emergency packets by vehicles equipped with both DSRC and cellular LTE wireless communication capabilities. Our scheme is based on a dynamic clustering strategy, which includes a new cluster head selection algorithm to deal with the broadcast storm problem. Furthermore, our selection algorithm enables not only the election of the most stable vehicles as cluster heads, and hence their exploitation in forwarding the emergency information, but also the avoidance of packet collisions. We simulated our scheme in an urban environment and compared it with other data dissemination schemes. Obtained results show the efficiency of our scheme in minimizing collision and broadcast storm problems, while improving latency, packet delivery ratio and data throughput, as compared to other schemes.
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Zhang, Xin, Jiali You, Hanxing Xue, and Jinlin Wang. "A Decentralized PageRank Based Content Dissemination Model at the Edge of Network." International Journal of Web Services Research 17, no. 1 (January 2020): 1–16. http://dx.doi.org/10.4018/ijwsr.2020010101.

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In the era of Internet of Things, cloud services are difficult to meet the real-time transmission requirements of users for the data generated in the edge of network especially for the Internet video services. Utilizing the devices at the edge of network, such as an intelligent router, to achieve nearby content services for users can effectively reduce backbone traffic and enhance service performance. This article proposes a decentralized PageRank-based content dissemination model at the edge of network, in which a suitable node selection algorithm is designed to distribute the content evenly in the network. Each node can quickly obtain data from neighbor nodes, thereby reducing the cloud load as well as the network bandwidth and improving the service response performance. The simulation shows that, compared with the other two dissemination algorithms, the content is distributed more even, which means every node has more opportunity to obtain the data from neighbors; and the service rejection rate can be decreased by an average of 5.2% in the case of high concurrent requests.
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Yao, Yuhui, Yan Sun, Chris Phillips, and Yue Cao. "Movement-Aware Relay Selection for Delay-Tolerant Information Dissemination in Wildlife Tracking and Monitoring Applications." IEEE Internet of Things Journal 5, no. 4 (August 2018): 3079–90. http://dx.doi.org/10.1109/jiot.2018.2831439.

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Cao, Dun, Bin Zheng, Baofeng Ji, Zhengbao Lei, and Chunhai Feng. "A robust distance-based relay selection for message dissemination in vehicular network." Wireless Networks 26, no. 3 (October 30, 2018): 1755–71. http://dx.doi.org/10.1007/s11276-018-1863-4.

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Basha, S. Karimulla, and T. N. Shankar. "Fuzzy logic based forwarder selection for efficient data dissemination in VANETs." Wireless Networks 27, no. 3 (February 24, 2021): 2193–216. http://dx.doi.org/10.1007/s11276-021-02548-8.

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Alowish, Mazen, Yoshiaki Shiraishi, Yasuhiro Takano, Masami Mohri, and Masakatu Morii. "A novel software-defined networking controlled vehicular named-data networking for trustworthy emergency data dissemination and content retrieval assisted by evolved interest packet." International Journal of Distributed Sensor Networks 16, no. 3 (March 2020): 155014772090928. http://dx.doi.org/10.1177/1550147720909280.

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Vehicle ad hoc network is the key technology for a future Internet of vehicles and intelligent transport system. However, involvement of vast number of vehicles in Internet of vehicles limits the performance of vehicle ad hoc network. To tackle this problem, a novel vehicle ad hoc network architecture with two different technologies such as software-defined networking and named-data networking is proposed in this article. In the proposed software-defined networking controlled vehicular named-data networking, IP addressing issue is resolved by named-data networking and global view of the network is attained by software-defined networking. Emergency data dissemination is initiated with packet classification. For packet classification, policy-based bifold classifier is proposed in roadside unit and supported by evolved interest packet. Subsequently, best disseminator selection is carried out by trustworthy weighted graph scheme based on novel weight value, which is computed by considering significant metrics. Content retrieval is accomplished by roadside unit and assisted by a controller. Location of content producer is obtained from a controller and optimal route is selected by roadside unit. Optimal route selection is performed by roadside unit for both content retrieval and vehicle-to-vehicle communication using novel region-based hybrid cuckoo search algorithm. Hybrid algorithm combines cuckoo search and particle swarm optimization algorithm to perform efficient route selection. Involvement of software-defined networking controller supports numerous users by providing a global view of the network, which includes network status and traffic information. Extensive simulation in NS-3 assures better interest satisfaction rate, interest satisfaction delay, forwarder interest packets, average hop count, and gain of scalability in software-defined networking controlled vehicular named-data networking than traditional vehicle ad hoc network.
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Zhu, Yian, Lin Zhang, Haobin Shi, Kao-Shing Hwang, Xianchen Shi, and Shuyan Luo. "An Adaptive Routing-Forwarding Control Scheme Based on an Intelligent Fuzzy Decision-Making System for Opportunistic Social Networks." Symmetry 11, no. 9 (September 2, 2019): 1095. http://dx.doi.org/10.3390/sym11091095.

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Routing selection in opportunistic social networks is a complex and challenging issue due to intermittent communication connections among mobile devices and dynamic network topologies. The structural characteristics of opportunistic social networks indicate that the social attributes of mobile nodes play a significant role on data dissemination. To this end, in this paper, we propose an adaptive routing-forwarding control scheme (FPRDM) based on an intelligent fuzzy decision-making system. On the foundation of the conception of fuzzy inference logic, two techniques are used in the proposed routing algorithm. Information fusion of social characteristics of message users and node identification are implemented based on the fuzzy recognition strategy, and the fuzzy decision-making mechanism is applied to control message replication and optimize data transmission. Simulation results demonstrate that, in the best case, the proposed scheme presents an average delivery ratio of 0.8, reduces the average end-to-end delay by nearly 45% as compared with the Epidemic routing protocol, and lowers the network overhead by about 75% as compared to the Spray and Wait routing algorithm.
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Mao, Ming, Peng Yi, Tao Hu, Zhen Zhang, Xiangyu Lu, and Jingwei Lei. "Hierarchical Hybrid Trust Management Scheme in SDN-Enabled VANETs." Mobile Information Systems 2021 (August 16, 2021): 1–16. http://dx.doi.org/10.1155/2021/7611619.

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One of the principal missions of security in the Internet of Vehicles (IoV) is to establish credible social relationships. The trust management system has been proved to be an effective security solution in a connected vehicle environment. The use of trust management can play a significant role in achieving reliable data collection and dissemination and enhanced user security in the Internet of Vehicles. However, due to a large number of vehicles, the limited computing power of individuals, and the highly dynamic nature of the network, a universal and flexible architecture is required to realize the trust of vehicles in a dynamic environment. The existing solutions for trust management cannot be directly applied to the Internet of Vehicles. To ensure the safe transmission of data between vehicles and overcome the problems of high communication delay and low recognition rate of malicious nodes in the current trust management scheme, an efficient flow forwarding mechanism of the RSU close to the controller in the Software-Defined Vehicular Network is used to establish a hierarchical hybrid trust management architecture. This method evaluates the dynamic trust change of vehicle behavior based on the trust between vehicles and the auxiliary trust management of the infrastructure to the vehicle, combined with static and dynamic information and other indicators. The proposed trust management scheme is superior to the comparative schemes in resisting simple attacks, selective misbehavior attacks, and time-dependent attacks under the condition of ensuring superior real-time performance. Its overall accuracy is higher than that of the baseline scheme.
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Dissertations / Theses on the topic "Computer networks. Selective dissemination of information"

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Wang, Bohe. "Information dissemination by compounding." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3532.

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Thesis (Ph. D.)--West Virginia University, 2004.
Title from document title page. Document formatted into pages; contains iv, 146 p. : ill. (some col.) + computer files. Includes supplementary version computer files in java applets, txt, and MS Word. Includes abstract. Includes bibliographical references (p. 90-91).
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Li, Yingjie. "Information dissemination and routing in communication networks." Columbus, Ohio : Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1132767756.

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Zhang, Jianjun. "Efficient Information Dissemination in Wide Area Heterogeneous Overlay Networks." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/16129.

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In this dissertation research we study and address the unique challenges involved in information sharing and dissemination of large-scale group communication applications. We focus on system architectures and various techniques for efficient and scalable information dissemination in distributed P2P environments. Our solutions are developed by targeting at utilizing three representative P2P overlay networks: structured P2P network based on consistent hashing techniques, unstructured Gnutella-like P2P network, and P2P GeoGrid based on geographical location and proximity of end nodes. We have made three unique contributions to the general field of large-scale information sharing and dissemination. First, we propose a landmark-based peer clustering techniques to grouping end-system nodes by their network proximity, and a communication management technique addresses load balancing and reliability of group communication applications in structured P2P network. Second, we develop a utility-based P2P group communication service middleware, consisting of a utility-based topology management and a utility-aware P2P routing, for providing scalable and efficient group communication services in an unstructured P2P overlay network of heterogeneous peers. Third, we propose an overlay network management protocol that is aware of the geographical location of end-system nodes and a set of routing and adaptation techniques, aiming at building decentralized information dissemination service networks to support location-based applications and services. Although different overlay networks require different system designs for building scalable and efficient information dissemination services, we have employed two common design philosophies: (1) exploiting end-system heterogeneity and (2) utilizing proximity information of end-system nodes to localize most of the communication traffic, and (3) using randomized shortcuts to accelerate long-distant communications. We have demonstrated our design philosophies and the performance improvements in the above three types of P2P overlay networks. Concretely, by assigning more workloads to more powerful peers, we can greatly increase the system scalability and reduce the variation of workload distribution. By clustering end-system nodes based on their IP-network proximity or their geographical proximity, and utilizing randomized shortcuts, we can reduce the end-to-end communication latency, balance peer workloads against service request hotspots across the overlay network, and significantly enhance the scalability and efficiency of large-scale decentralized information dissemination and group communication.
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AGARWAL, Rachit. "Towards enhancing information dissemination in wireless networks." Phd thesis, Institut National des Télécommunications, 2013. http://tel.archives-ouvertes.fr/tel-00919417.

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In public warning message systems, information dissemination across the network is a critical aspect that has to be addressed. Dissemination of warning messages should be such that it reaches as many nodes in the network in a short time. In communication networks those based on device to device interactions, dissemination of the information has lately picked up lot of interest and the need for self organization of the network has been brought up. Self organization leads to local behaviors and interactions that have global effects and helps in addressing scaling issues. The use of self organized features allows autonomous behavior with low memory usage. Some examples of self organization phenomenon that are observed in nature are Lateral Inhibition and Flocking. In order to provide self organized features to communication networks, insights from such naturally occurring phenomenon is used. Achieving small world properties is an attractive way to enhance information dissemination across the network. In small world model rewiring of links in the network is performed by altering the length and the direction of the existing links. In an autonomous wireless environment such organization can be achieved using self organized phenomenon like Lateral inhibition and Flocking and beamforming (a concept in communication). Towards this, we first use Lateral Inhibition, analogy to Flocking behavior and beamforming to show how dissemination of information can be enhanced. Lateral Inhibition is used to create virtual regions in the network. Then using the analogy of Flocking rules, beam properties of the nodes in the regions are set. We then prove that small world properties are achieved using average path length metric. However, the proposed algorithm is applicable to static networks and Flocking and Lateral Inhibition concepts, if used in a mobile scenario, will be highly complex in terms of computation and memory. In a mobile scenario such as human mobility aided networks, the network structure changes frequently. In such conditions dissemination of information is highly impacted as new connections are made and old ones are broken. We thus use stability concept in mobile networks with beamforming to show how information dissemination process can be enhanced. In the algorithm, we first predict the stability of a node in the mobile network using locally available information and then uses it to identify beamforming nodes. In the algorithm, the low stability nodes are allowed to beamform towards the nodes with high stability. The difference between high and low stability nodes is based on threshold value. The algorithm is developed such that it does not require any global knowledge about the network and works using only local information. The results are validated using how quickly more number of nodes receive the information and different state of the art algorithms. We also show the effect of various parameters such as number of sources, number of packets, mobility parameters and antenna parameters etc. on the information dissemination process in the network. In realistic scenarios however, the dynamicity in the network is not only related to mobility. Dynamic conditions also arise due to change in density of nodes at a given time. To address effect of such scenario on the dissemination of information related to public safety in a metapopulation, we use the concepts of epidemic model, beamforming and the countrywide mobility pattern extracted from the $D4D$ dataset. Here, we also propose the addition of three latent states to the existing epidemic model ($SIR$ model). We study the transient states towards the evolution of the number of devices having the information and the difference in the number of devices having the information when compared with different cases to evaluate the results. Through the results we show that enhancements in the dissemination process can be achieved in the addressed scenario
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Hinojosa, Cristelia. "Organizational Information Dissemination Within Collaborative Networks Using Digital Communication Tools." NSUWorks, 2017. http://nsuworks.nova.edu/gscis_etd/996.

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While knowledge is one of an organization’s greatest assets, it remains a challenge to facilitate knowledge transfer between people within an organization. Social influence has been studied in its role of facilitating information diffusion, which is necessary for knowledge transfer to occur. Among this research, tie strength, a quantifiable characteristic of a social network that determines the link between two nodes, has been measured to determine the impact of social influence on knowledge transfer and information dissemination within a social network. Current research that explores the impact of social influence on information diffusion has been conducted within public social networks due to the availability of data that can be gathered from public social online network systems, such as Facebook. With the emergence of collaboration technologies that exist in online social network tools being utilized within organizations, there is an opportunity to digitally collect information regarding information dissemination within a collaborative network. This study captured data from an online social network, specifically a unified communication tool, being used within a collaborative social network at a mid-sized South Central corporation. A content analysis of Lync messages for 1,749 connections was performed to quantitatively measure the influence of tie strength on information dissemination within a collaborative social network. The results demonstrated that tie strength had a significant impact on information dissemination using a collaborative system. Multivariate analysis of variance showed that tie strength had the largest impact on information dissemination using the instant messaging modality of a collaboration system.
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Maliwatu, Richard. "Ubiquitous Mesh Networking: application to mobile communication and information dissemination in a rural context." Thesis, University of Cape Town, 2014. http://pubs.cs.uct.ac.za/archive/00000996/.

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ICT has furthered the social and economic development of societies but, rural African communities have lagged behind due to issues such as sparse population, low household income, a lack of electricity and other basic infrastructure that make it unattractive for telecommunication service providers to extend service provision. Where the service is available, ubiquitous service coverage has not translated into ubiquitous access for individuals because of the associated costs. A community-wide WMN offering VoIP using fixed telephone handsets has been deployed as a viable alternative to the cellular service provider. The effectiveness of this WMN VoIP service springs from the mobile phone usage statistics which showed that the majority of calls made are intra-community. This dissertation has been an effort towards improved communication and access to information for the under-served communities. Key contributions include, mobile VoIP support, translation gateway deployment to make textual information accessible in voice form via the phone, IP-based radio for community information dissemination. The lack of electricity has been mitigated by the use of low-power devices. In order to circumvent the computational challenges posed by the processing and storage limitations of these devices, a decentralised system architecture whereby the processing and storage load are distributed across the mesh nodes has been proposed. High-performance equipment can be stationed at the closest possible place with electricity in the area and connectivity extended to the non-electrified areas using low-power mesh networking devices. Implementation techniques were investigated and performance parameters measured. The quality of service experienced by the user was assessed using objective methods and QoS correlation models. A MOS value of 4.29, i.e. very good, was achieved for the mobile VoIP call quality, with the underlying hardware supporting up to 15 point-to-point simultaneous calls using SIP and the G.711 based codec. Using the PEAQ algorithm to evaluate the IP-based radio, a PEAQ value of 4.15, i.e. good, was achieved. Streaming audio across the network reduces the available bandwidth by 8Kbps per client due to the unicast nature of streaming. Therefore, a multicast approach has been proposed for efficient bandwidth utilization. The quality of the text-to-voice service rendered by the translation gateway had a PESQ score of 1.6 i.e. poor. The poor performance can be attributed to the TTS engine implementation and also to the lack of robustness in the time-alignment module of the PESQ algorithm. The dissertation also proposes the use of the WMN infrastructure as a back-haul to isles of WSNs deployed in areas of interest to provide access to information about environmental variables useful in decision making.
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Solomons, Cecily. "Organisational discourses : electronic windows on the work of HIV/AIDS-care organisations." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6745.

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Thesis (MPhil (General Linguistics))--University of Stellenbosch, 2011.
Bibliography
ENGLISH ABSTRACT: This thesis is interested in textual features of websites which cover the same kind of content, but represent different organisations and address different kinds of audiences. Specifically, it investigates how information on HIV/AIDS is multimodally represented on the webpages of two non-governmental organisations (NGOs) and two governmental organisations. First, the websites of the national Department of Health and of a provincial Department of Health (Western Province) are scrutinised. Second, the websites of the Treatment Action Campaign (TAC) and Avert, NGOs with a special interest in the prevention and treatment of HIV/AIDS in southern Africa, are investigated. The aim of the research is to consider aspects of layout, the use of multimodality, and the introduction of selected themes and concerns foregrounded in the selected websites. The focus of the thesis is on the transmission of information, particularly through the electronic media, by investigating multimodal elements (language, images, sound, colours) and the layouts of websites, in order to identify possible interpretations which the intended audiences may afford the various texts. The analysis of the sites relies theoretically on the metafunctions developed by Halliday (1985) in his systemic functional linguistic framework. It also refers to an extension of Halliday’s work developed to allow multimodal discourse analysis that considers aspects of visual design and placement, developed by Kress and van Leeuwen (1996, 1998) and Kress (2003, 2005). These approaches focus on text, multimodal elements, the placements thereof on a page as well as the coherence between design of layouts and communicative modes that intend to send a convincing and meaningful message. The thesis also refers to Critical Discourse Analysis in that it considers matters of language and power in internet based communication. It seems that the governmental sites are set up with an audience in mind who needs to be informed on policy matters, while the NGO sites are set up with a more vulnerable audience in mind. One kind of web-communication is likely to alienate the exact people who should be receiving state support and treatment in the face of HIV/AIDS. Another is aimed more at supporting activism against the perceived lethargy of the state. A third supports various charities that reach out to communities where HIV-infection rates are particularly high. The interpretation of multimodal pages requires knowledge of website design for educational purposes as well as information on usage of the internet to get sufficient information. Further, access of the intended audience to electronic communication needs to be considered as this will determine whether the seriousness of the illness and possible prevention or treatment, is well communicated, especially to those who have been identified as most vulnerable to new infection. The thesis finds that electronic communication cannot be the first step to circulating information related to HIV/AIDS. Non-governmental and governmental institutions are still dependent on other forms of media than websites, thus on the printed media, radio and television, and on campaigns or community based projects to communicate with particular audiences. Electronic communication is complex in that it works with various modes (visual, verbal, audial) and requires some technical sophistication from producers and receivers of texts. Theories of communication and discourse analytic methodologies can assist in our understanding of how the internet succeeds or fails in circulating critical health care information. However, to gain a reliable understanding of how the internet functions in transmitting HIV-information to all interest groups, received knowledge of other areas of scholarly interest in health care communication, such as multilingualism, sociology, anthropology, behavioural sciences, cognitive psychology or brain research elaborations, would eventually have to be considered as well.
AFRIKAANSE OPSOMMING: Hierdie tesis stel belang in tekstuele kenmerke van webwerwe wat dieselfde tipe inhoud weergee, maar verskillende organisasies verteenwoordig en verskillende tipes gehore aanspreek. Dit ondersoek spesifiek hoe inligting oor MIV/Vigs multimodaal op die webbladsye van twee nie-regeringsorganisasies (NRO’s) en twee regeringsorganisasies aangebied word. Die webwerwe van die Nasionale Departement van Gesondheid en die Provinsiale Departement van Gesondheid (Wes-Kaap) word eerstens noukeurig ondersoek. Tweedens word die webwerwe van die Treatment Action Campaign (TAC) en Avert, NRO’s met spesiale belang in die voorkoming en behandeling van MIV/Vigs in suidelike Afrika, ondersoek. Die doel van hierdie navorsing is om oor aspekte van uitleg, die gebruik van multimodaliteit en die invoering van spesifieke temas en sake wat op die geselekteerde webwerwe beklemtoon word, na te dink. Die tesis se fokus in op die oordrag van inligting, veral deur die elektroniese media, deur multimodale elemente (taal, beelde, klank, kleur) en die uitleg van webwerwe te ondersoek, om sodoende verskillende moontlike interpretasies wat die bestemde gehoor aan die verskeie tekste mag heg, te identifiseer. Die analise van die webwerwe steun teoreties op die metafunksies wat deur Halliday (1985) ontwikkel is in sy grammatikale raamwerk, Systemic Functional Grammar. Dit verwys ook na ’n uitbreiding op Halliday se werk, wat deur Kress en Van Leeuwen (1996, 2005, 1998) en Kress (2003) ontwikkel is om multimodale diskoersanalise toe te laat wat aspekte van visuele ontwerp en plasing oorweeg. Hierdie benaderings fokus op teks, multimodale elemente, die plasing daarvan op ‘n bladsy en die koherensie tussen die ontwerp, uitleg en kommunikatiewe modusse. Dit kyk na hoe hierdie elemente saamwerk om ’n oortuigende en betekenisvolle boodskap uit te stuur. Hierdie tesis verwys ook na aspekte van Kritiese Diskoersanalise wat betrekking het op kwessies van taal en mag in internetgebaseerde kommunikasie. Dit kom voor asof die regeringswebwerwe ontwerp is met ’n gehoor in gedagte wat oor beleidskwessies ingelig moet word, terwyl die NRO-webwerwe ontwerp is met ’n meer weerlose gehoor in gedagte. Lg. gehoor word ingelig oor die siekte en behandelingsmoontlikhede eerder as beleid. Een soort web-kommunikasie sal waarskynlik dié mense wat juis regeringsondersteuning teen MIV/Vigs behoort te ontvang, vervreem. ’n Ander soort is meer daarop gerig om aktivisme teen die staat se vermeende traagheid te ondersteun. ’n Derde soort kommunikasie ondersteun verskeie liefdadigheidsorganisasies wat uitreik na gemeenskappe waar MIV-infeksiekoerse besonder hoog is. Die interpretasie van multimodale webwerwe vereis kennis van webwerf-ontwerp vir opvoedkundige doeleindes asook inligting oor die gebruik van die internet om voldoende inligting te bekom. Verder moet die bestemde gehoor se toegang tot elektroniese kommunikasie in ag geneem word, aangesien dít sal bepaal of die erns van die siekte en moontlike voorkoming of behandeling, goed weergegee word, veral aan dié wat s besonder blootgestel is en dus hoë risiko loop vir nuwe infeksie. Die tesis bevind dat elektroniese kommunikasie nie die eerste stap kan wees in die proses om inligting oor MIV/Vigs te sirkuleer nie. Nie-regerings- en regeringsorganisasies is steeds afhanklik van ander media as webwerwe, soos drukmedia, radio, televisie en veldtogte of gemeenskapsgebaseerde projekte, om met bepaalde gehore te kommunikeer. Elektroniese kommunikasie is kompleks omdat dit met verskeie modusse (visueel, verbaal, oudio) werk en tegniese sofistikasie van vervaardigers en ontvangers van tekste vereis. Teorieë van kommunikasie en diskoersanalise-metodologieë kan ons insig in hoe die internet daarin slaag (of nie) om belangrike gesondheidsorginligting te versprei. Om egter ’n betroubare begrip vir die werking van die internet as verspreider van MIV-inligting aan alle belange-groepe te verkry, moet kennis van ander areas van belangstelling in gesondheidsorg-kommunikasie, soos veeltaligheid, sosiologie, antropologie, gedragswetenskappe, kognitiewe psigologie of brein-navorsing, ook uiteindelik oorweeg word.
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Miao, Jingwei. "Message dissemination in mobile delay tolerant networks." Phd thesis, INSA de Lyon, 2013. http://tel.archives-ouvertes.fr/tel-00876589.

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Mobile Delay Tolerant Networks (MDTNs) are wireless mobile networks in which a complete routing path between two nodes that wish to communicate cannot be guaranteed. A number of networking scenarios have been categorized as MDTNs, such as vehicular ad hoc networks, pocket switched networks, etc. The network asynchrony, coupled with the limited resources of mobile devices make message dissemination (also called routing) one of the fundamental challenges in MDTNs. In the literature, a large body of work has been done to deal with routing in MDTNs. However, most of the existing routing protocols are based on at least one of the following three assumptions: (1) all messages can be routed by relying on a single mobility property; (2) all messages can be routed using a single message allocation strategy; (3) users are willing to disclose their mobility information and relationships to others in order to improve the quality of the routing. We argue that the above three assumptions are not realistic because: (1) users can exhibit various social behaviors and consequently various mobility properties (e.g., they can have regular movements during week-days and exhibit non-predictable movements during week-ends); (2) some messages might need more or less copies to be delivered according to the localization of the source and the destination and to the urgency of the message; and (3) users mobility data can disclose sensitive information about the users. In this thesis, we relieve MDTN routing from the above three restrictive assumptions. Firstly, we propose an adaptive routing protocol for mobile delay tolerant networks. The proposed protocol can dynamically learn the social properties of nodes based on their mobility patterns, and exploit the most appropriate routing strategy each time an intermediate node is encountered. Simulations performed on real mobility traces show that our protocol achieves a better delivery ratio than existing state-of-the-art routing protocols that rely on a single mobility property. Secondly, we present a delay and cost balancing protocol for efficient routing in mobile delay tolerant networks. The presented protocol reasons on the remaining time-to-live of a message to dynamically allocate the minimum number of copies that are necessary to achieve a given delivery probability. Evaluation results show that the protocol can achieve a good balance between message delivery delay and delivery cost, compared with most of the existing routing protocols in the literature. Lastly, we propose an efficient privacy preserving prediction-based routing protocol for mobile delay tolerant networks. This protocol preserves the mobility patterns of a node from being disclosed by exploiting the mobility pattern of communities that node belongs to. Evaluation results demonstrate that this protocol can obtain comparable routing performance to prediction-based protocols while preserving the mobility pattern of nodes.
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Hajiarabderkani, Masih. "Adaptive dissemination of network state knowledge in structured peer-to-peer networks." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/6761.

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One of the fundamental challenges in building Peer-to-Peer (P2P) applications is to locate resources across a dynamic set of nodes without centralised servers. Structured overlay networks solve this challenge by proving a key-based routing (KBR) layer that maps keys to nodes. The performance of KBR is strongly influenced by the dynamic and unpredictable conditions of P2P environments. To cope with such conditions a node must maintain its routing state. Routing state maintenance directly influences both lookup latency and bandwidth consumption. The more vigorously that state information is disseminated between nodes, the greater the accuracy and completeness of the routing state and the lower the lookup latency, but the more bandwidth that is consumed. Existing structured P2P overlays provide a set of configuration parameters that can be used to tune the trade-off between lookup latency and bandwidth consumption. However, the scale and complexity of the configuration space makes the overlays difficult to optimise. Further, it is increasingly difficult to design adaptive overlays that can cope with the ever increasing complexity of P2P environments. This thesis is motivated by the vision that adaptive P2P systems of tomorrow, would not only optimise their own parameters, but also generate and adapt their own design. This thesis studies the effects of using an adaptive technique to automatically adapt state dissemination cost and lookup latency in structured overlays under churn. In contrast to previous adaptive approaches, this work investigates the algorithmic adaptation of the fundamental data dissemination protocol rather than tuning the parameter values of a protocol with fixed design. This work illustrates that such a technique can be used to design parameter-free structured overlays that outperform other structured overlays with fixed design such as Chord in terms of lookup latency, bandwidth consumption and lookup correctness. A large amount of experimentation was performed, more than the space allows to report. This thesis presents a set of key findings. The full set of experiments and data is available online at: http://trombone.cs.st-andrews.ac.uk/thesis/analysis.
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Jun, Seung Won. "Building Robust Peer-to-Peer Information Dissemination Systems Using Trust and Incentives." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14037.

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As computers become pervasive and better connected, the popularity of peer-to-peer computing has grown immensely. The sharing of unused resources at peers is desirable and practically important because they can collectively comprise a powerful system. The potential benefit, however, can be undermined by uncooperative behavior of some peers because they are managed individually and hence may not follow the expected protocols. To build robust systems, we must incorporate proper trust and incentive mechanisms so that peers would rather cooperate. In this dissertation, we demonstrate that building robust peer-to-peer information dissemination systems is important and viable, using four concrete cases. First, we investigate the incentive mechanism of BitTorrent, an exchange-based file distribution protocol. Our framework based on iterated prisoner's dilemma provides an insight into users' tension between eagerness to download and unwillingness to upload. By using both analytical and experimental approaches, we show that the current incentive mechanism of BitTorrent is susceptible to free riding. We propose an improved mechanism that punishes free riders effectively. Second, we present a trust-aware overlay multicast system that performs well in the presence of uncooperative nodes, which may block, delay, fabricate, or forge the messages they forward. We develop (1) a set of protocols that detect uncooperative behavior, (2) a scheme of trust value assignment according to the behavior of nodes, and (3) an algorithm that adapts the multicast tree based on trust values, all of which allows the system to remain stable and responsive over time. Third, we propose an alternative news feed dissemination system, called FeedEx, in which feed subscribers mesh into a network and exchange news feeds with neighbors. The collaborative exchange in FeedEx, with the help of the incentive-compatible design using the pair-wise fairness principle, reduces the server load and hence increases the scalability. Fourth, we introduce a new concept of peer-to-peer computing, that is, continual service using ephemeral servers. To this end, we develop a system model for the concept and implement a discrete-time simulator to find the conditions and the system support for eliciting cooperation. All four cases are substantiated by experimental results.
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Books on the topic "Computer networks. Selective dissemination of information"

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Chi-Hung, Chi, Lam Kwok Yan 1966-, and LINK (Online service), eds. Content computing: Advanced workshop on content computing, AWCC 2004, ZhenJiang, JiangSu, China, November 15-17, 2004 : proceedings. Berlin: Springer, 2004.

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Murphy, D. NASA/DoD aerospace knowledge diffusion research project. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Murphy, D. NASA/DoD aerospace knowledge diffusion research project. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Murphy, D. NASA/DoD aerospace knowledge diffusion research project. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Fabio, Crestani, Rauber Andreas, and SpringerLink (Online service), eds. Digital Libraries: For Cultural Heritage, Knowledge Dissemination, and Future Creation: 13th International Conference on Asia-Pacific Digital Libraries, ICADL 2011, Beijing, China, October 24-27, 2011. Proceedings. Berlin, Heidelberg: Springer-Verlag GmbH Berlin Heidelberg, 2011.

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Bishop, Ann P. NASA/DoD aerospace knowledge diffusion research project. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Bishop, Ann P. NASA/DoD aerospace knowledge diffusion research project. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Bishop, Ann P. NASA/DoD aerospace knowledge diffusion research project. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Bishop, Ann P. NASA/DoD aerospace knowledge diffusion research project. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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(Editor), Chi-Hung Chi, and Kwok-Yan Lam (Editor), eds. Content Computing: Advanced Workshop on Content Computing, AWCC 2004, Zhen Jiang, Jiang Su, China, November 15-17, 2004, Proceedings (Lecture Notes in Computer Science). Springer, 2005.

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Book chapters on the topic "Computer networks. Selective dissemination of information"

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Guéret, Christophe. "Nature-Inspired Dissemination of Information in P2P Networks." In Computer Communications and Networks, 267–90. London: Springer London, 2009. http://dx.doi.org/10.1007/978-1-84882-229-0_10.

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Haeupler, Bernhard, and Fabian Kuhn. "Lower Bounds on Information Dissemination in Dynamic Networks." In Lecture Notes in Computer Science, 166–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33651-5_12.

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Lee, Byoung-Dai. "Adaptive Data Dissemination Protocol for Wireless Sensor Networks." In Communications in Computer and Information Science, 188–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16444-6_24.

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Emir Dirik, Ahmet, and Nasir Memon. "Selective Robust Image Encryption for Social Networks." In Communications in Computer and Information Science, 71–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38559-9_7.

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Kad, Sandeep, and Vijay Kumar Banga. "Efficient Directional Information Dissemination Approach in Vehicular Ad Hoc Networks." In Communications in Computer and Information Science, 351–63. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-1718-1_30.

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Liu, Dandan, Xiaodong Hu, and Xiaohua Jia. "Energy Efficient Protocols for Information Dissemination in Wireless Sensor Networks." In Lecture Notes in Computer Science, 176–85. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11610496_23.

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Farach-Colton, Martín, Antonio Fernández Anta, Alessia Milani, Miguel A. Mosteiro, and Shmuel Zaks. "Brief Announcement: Opportunistic Information Dissemination in Mobile Ad-Hoc Networks:." In Lecture Notes in Computer Science, 202–4. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-24100-0_19.

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Hromkovič, Juraj, Ralf Klasing, Walter Unger, and Hubert Wagener. "The complexity of systolic dissemination of information in interconnection networks." In Lecture Notes in Computer Science, 235–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/3-540-58078-6_20.

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Tsai, Tzu-Chieh, Ho-Hsiang Chan, Chien Chun Han, and Po-Chi Chen. "A Social Behavior Based Interest-Message Dissemination Approach in Delay Tolerant Networks." In Communications in Computer and Information Science, 62–80. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48021-3_5.

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Devi, C. R. Yamuna, B. Shivaraj, S. H. Manjula, K. R. Venugopal, and Lalit M. Patnaik. "EESOR: Energy Efficient Selective Opportunistic Routing in Wireless Sensor Networks." In Communications in Computer and Information Science, 16–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-54525-2_2.

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Conference papers on the topic "Computer networks. Selective dissemination of information"

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Lee, Eun-Kyu, and Ki Young Lee. "Selective Data Dissemination using Attribute Based Encryption." In Information Technology and Computer Science 2015. Science & Engineering Research Support soCiety, 2015. http://dx.doi.org/10.14257/astl.2015.99.07.

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Zheng, R. "Information Dissemination in Power-Constrained Wireless Networks." In Proceedings IEEE INFOCOM 2006. 25TH IEEE International Conference on Computer Communications. IEEE, 2006. http://dx.doi.org/10.1109/infocom.2006.168.

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Wang, Jin, Bo Tang, Zhongqi Zhang, Jian Shen, and Jeong-Uk Kim. "An Energy Efficient Data Dissemination Algorithm for Wireless Sensor Networks." In Computer, Information and Application 2014. Science & Engineering Research Support soCiety, 2014. http://dx.doi.org/10.14257/astl.2014.48.22.

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Chen, Wenbin, and Peng Qin. "Information Dissemination of Two Ways on Complex Networks." In 2017 4th International Conference on Machinery, Materials and Computer (MACMC 2017). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/macmc-17.2018.72.

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Rzheuskyi, Antonii, Nataliia Kunanets, Nataliia Veretennikova, and Roman Vaskiv. "Selective Dissemination of Information as a Communication Tool for E-Science Users." In 2018 IEEE 13th International Scientific and Technical Conference on Computer Sciences and Information Technologies (CSIT). IEEE, 2018. http://dx.doi.org/10.1109/stc-csit.2018.8526662.

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Tian, Zhanwei. "Prediction of Information Dissemination Based on Passive-aggressive Algorithm." In The 5th International Conference on Computer Engineering and Networks. Trieste, Italy: Sissa Medialab, 2015. http://dx.doi.org/10.22323/1.259.0080.

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Li, Xinfeng, Jin Teng, Boying Zhang, Adam C. Champion, and Dong Xuan. "TurfCast: A service for controlling information dissemination in wireless networks." In IEEE INFOCOM 2012 - IEEE Conference on Computer Communications. IEEE, 2012. http://dx.doi.org/10.1109/infcom.2012.6195744.

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Kong, Chenguang, and Xiaojun Cao. "Semi-controlled authorized information dissemination in content-based social networks." In 2014 23rd International Conference on Computer Communication and Networks (ICCCN). IEEE, 2014. http://dx.doi.org/10.1109/icccn.2014.6911759.

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Li, Xiaokun, Siyang Wang, Weigang Wu, Xu Chen, and Bin Xiao. "Interest Tree Based Information Dissemination via Vehicular Named Data Networking." In 2018 27th International Conference on Computer Communication and Networks (ICCCN). IEEE, 2018. http://dx.doi.org/10.1109/icccn.2018.8487357.

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Lopez, Christian E., Zixuan V. Zhao, and Conrad S. Tucker. "Semantic Network Differences Across Engineering Design Communication Methods." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97728.

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Abstract Engineering designers have a variety of methods at their disposal when it comes to communicating an idea (e.g., Linguistic, Pictorial, Virtual). Studies have explored how these methods affect the idea generation process, revealing that some methods can induce design fixation and reduce creativity. Moreover, studies reveal that depending on the communication methods and a receiver’s familiarity with the idea conveyed, the amount of relevant information transmitted could vary. Hence, based on previous studies, it is hypothesized that different communication methods and a receiver’s familiarity can impact a receiver’s ability to construct and interpret the information conveyed. To test this hypothesis, an experiment is conducted in which multiple methods are used to communicate different product ideas to individuals (N = 370). Participants are asked to describe the products in their own words and provide details about their functions. A text-mining approach is used to analyze the semantic structure of their responses. The results reveal that dissemination methods affect the consistency of participants’ responses, as well as the diversity of words used to describe a product idea or its functions. This knowledge can help designers in the selection of an appropriate method, given the design intention and help them leverage different methods to maximize communication effectiveness during the different stages of the design process.
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