Дисертації з теми "Broadcast Control"
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Liu, Sisi. "Securing Wireless Broadcast Communications against Internal Attacks." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/228114.
Повний текст джерелаAllen, Hamilton Ross. "Distribution and Management of the Red Imported Fire Ant, Solenopsis invicta Buren, in Virginia." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/35125.
Повний текст джерелаField trials showed that combination applications of Advion and Top Choice provided the fastest and greatest reduction in foraging three days after treatment and the longest residual control of fire ant colonies for one year. Field tests documenting the impacts of Advion and Top Choice on non-target ants indicate treatments do supress ant foraging but ant populations will rebound 10-12 months after treatment.
Laboratory PCR assays revealed that colonies in Virginia are primarily polygyne. Also, Kneallhazia solenopsae, Pseudaction spp. parasitoid decapitating phorid flies, and Solenopsis invicta virues (SINV) genetic materials were detected in fire ant samples.
CLIMEX model results indicate that fire ants will be able to spread as far east as the Greater Richmond area and as far north as Alexandria in Virginia.
Master of Science in Life Sciences
Wang, Xiaohan Sasha. "Investigation of Forward Error Correction Coding Schemes for a Broadcast Communication System." Thesis, University of Canterbury. Computer Science and Software Engineering, 2013. http://hdl.handle.net/10092/7902.
Повний текст джерелаShirazi, Hamidreza. "Cooperating broadcast and cellular conditional access system for digital television." Thesis, Brunel University, 2009. http://bura.brunel.ac.uk/handle/2438/3758.
Повний текст джерелаFryman, Daisy M. "COMPARISON OF ROPE-WICK AND BROADCAST TREATMENTS FOR CONTROL OF CANADA THISTLE AND TALL IRONWEED." UKnowledge, 2009. http://uknowledge.uky.edu/gradschool_theses/586.
Повний текст джерелаSharman, Kimberly. "A broadcast-based coordination scheme for a system of autonomous mobile robots." Thesis, Virginia Tech, 1994. http://hdl.handle.net/10919/42057.
Повний текст джерелаMaster of Science
Harrison, William. "Malleability, obliviousness and aspects for broadcast service attachment." Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2010/4138/.
Повний текст джерелаKangude, Shantanu. "CSMA with Implicit Scheduling through State-keeping: A Distributed MAC Framework for QoS in Broadcast LANs." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-05132004-132109/unrestricted/kangude%5Fshantanu%5F200407%5Fphd.pdf.
Повний текст джерелаCopeland, John, Committee Chair ; Owen, Henry, Committee Member ; Sivakumar, Raghupathy, Committee Member ; Lanterman, Aaron, Committee Member ; Dos Santos, Andre, Committee Member. Includes bibliographical references.
Laird, Daniel T., and Jon Morgan. "Data Flow and Remote Control in the Telemetry Network System." International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606151.
Повний текст джерелаThe Central Test and Evaluation Investment Program (CTEIP) Integrated Network Enhanced Telemetry (iNET) program is currently developing new standards for wired-wireless local area networking (LAN-WLAN) using the Internet Protocol (IP), for use in telemetry (TM) channels, under the umbrella of the Telemetry Network System (TmNS). Some advantages of TmNS are real-time command and control of instrumentation, quick-look acquisition, data retransmission and recovery ('gapless TM' or 'PCM backfill'), data segmentation, etc. The iNET team is developing and evaluating prototypes, based on commercial 802.x and other technologies, in conjunction with Range Commander's Council (RCC) Inter-Range Instrumentation Group (IRIG) standards and standards developed under the iNET program.
Amoah, Raphael. "Formal security analysis of the DNP3-Secure Authentication Protocol." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/93798/1/Raphael_Amoah_Thesis.pdf.
Повний текст джерелаRewinkel, Kimberly Erin. "Representations of Housewife Identity in BBC Home Front Radio Broadcasts, 1939-1945." Bowling Green State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1363267060.
Повний текст джерелаCosand, Kalistah Quilla. "Black and Blue and Read All Over: News Framing and the Coverage of Crime." PDXScholar, 2014. https://pdxscholar.library.pdx.edu/open_access_etds/1793.
Повний текст джерелаChandran, S. Ram. "Error-control schemes for broadcast channels." Thesis, 1991. http://hdl.handle.net/10125/9745.
Повний текст джерела楊長翰. "Study of Remote Control for Broadcast Operating System." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/v2e23u.
Повний текст джерелаPeng, Guan-Jei, and 彭冠傑. "An Adaptive Emergency Message Broadcast Control Mechanism for VANETs." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/88207365997798162051.
Повний текст джерела國立交通大學
網路工程研究所
100
The problem considered in this thesis is how to broadcast the emergency message instantly and successfully to the streets of the hazard zone in Vehicular Ad Hoc Networks (VANET) environment. We propose an adaptive emergency message broadcast control mechanism to solve it. The proposed mechanism can be divided into two parts: (1) determining the relationship between the reliability and the message broadcast frequency; (2) adjusting message broadcast frequency based on traffic load. The simulation results show that our adaptive emergency message broadcast control mechanism can effectively reduce the network overhead under a given reliability constraint.
Wu, Feng-Kung, and 吳豐光. "Control of worm-gear-driven stabilizing platform for Digital Broadcast Satellite." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/99109678223508076321.
Повний текст джерелаFan, Cheng-Wei, and 范振偉. "An Effective Multi-Hop Broadcast Control for Alert Message in VANET." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/11336739652576455337.
Повний текст джерела國立暨南國際大學
資訊工程學系
100
In recent years, vehicle safety application has played a more important role in Vehicle ad-hoc network (VANET). Multi-hop broadcast method is widely used in these applications to propagate emergent messages to surrounding vehicles. However, it will lead to higher packet loss rate and transmission latency while massive emergent packets make data collision occurs frequently. This paper proposes a position base broadcast module, named Broad Control Unit (BCUnit), in order to reduce the re-broadcast nodes and minimize emergent message conflict. This module can be easily implemented to WAVE/DSRC devices without any additional transmission overhead and explicit coordination among vehicles. The simulation results show significant progress in multi-hop delay.
Tsai, Kehan, and 蔡岢翰. "The Rate Control Mechanism For Broadcast Video Streaming In IEEE 802.11 Networks." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/09474460608693483266.
Повний текст джерела義守大學
資訊工程學系
100
Recently, three different physical layers (IEEE 802.11 a/b/g) for the IEEE 802.11 standard, they all provide multi-rate capabilities, but they are no specification in the standard for the opportunity and practice. Although, many researches have proposed to improve that the packet loss in the varied of the wireless or provide the higher throughput in the stable codition. In the IEEE 80211 standard, the multicast and broadcast service is defined as an unreliable service, that is, it does not include the use of ACK frames. Therefore, adjust the suitable the transmission rate is the important issue in the multicast video streaming. We proposed the rate contorl mechanism that applicable the media of multicast video streaming in the embedded system. In the IEEE 802.11 specification, the receiver use the statistics-based mechanism requires the sender adjust appropriate transmission rate for provide the higher throughput or lower packet loss rate in the multicast video streaming.
"Personal Narratives of Health by TV Anchors and Reporters: Issues of Control Over Social Media and Professional Expression." Doctoral diss., 2019. http://hdl.handle.net/2286/R.I.53781.
Повний текст джерелаDissertation/Thesis
Doctoral Dissertation Journalism and Mass Communication 2019
Šenkýřová, Markéta. "Kontrola rozhlasových vln - Československý rozhlas v 50. a 60. letech." Master's thesis, 2010. http://www.nusl.cz/ntk/nusl-296622.
Повний текст джерелаChen, Fu-Wen, and 陳富文. "Design and Analysis of Efficient Transmission Control Protocols in Wireless Networks: Multihop Broadcast and Relay-Assisted Network-Coding ARQ." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/03673939755662005306.
Повний текст джерела國立清華大學
資訊工程學系
102
Wireless communication is inherently error-prone due to path loss, fading, noise, interference, etc. In such an error-inclined environment with scarce spectrum, it is of paramount importance to achieve reliable data delivery efficiently. In this thesis, we develop efficient schemes for providing reliable broadcast in wireless multihop networks and for providing advanced ARQ in wireless relay networks. We first address the minimum transmission broadcast problem in error-prone wireless networks and present efficient solutions, including an optimal broadcast scheme and a distributed game-based algorithm. The minimum transmission broadcast problems over reliable links and over unreliable links are formulated as two mixed integer linear programming (MILP) problems, respectively. This way, optimal broadcast schemes can be easily obtained using any existing MILP solver, for small-scale networks. For large-scale networks, we propose a distributed game-based algorithm and prove that the game-based algorithm achieves Nash Equilibrium. Using simulation, we confirm that compared with existing algorithms in the literature and optimal solutions obtained by our MILP techniques, the proposed game-based algorithm performs very well in terms of delivery ratio, number of transmissions, and convergence speed. We further address the issue of advanced ARQ in wireless relay networks and develop relay-assisted network-coding (RANC) ARQ protocols, which leverage both opportunistic retransmission and network coding techniques. We introduce the concept of work, which is the number of recoded blocks a relay node will send, and study ways to adjusting the rate at which a relay node increases its work. Based on this concept, we present the unified framework of work-based RANC and then, under the unified framework, we develop a number of RANC ARQ protocols including plain-RANC, Work-based Opportunistic RANC (WO-RANC), Listen-and-Supersede (LS) RANC, and Hold-and-Proceed (HP) RANC. LS offers a fundamental limit to any single-relay RANC ARQ protocol. HP is a simple yet efficient RANC ARQ protocol with near-zero overhead. We analyze saturation throughput and segment delay for both LS and HP. Through extensive analysis and simulation results, we show that HP has a performance close to LS.
Omar, Hassan Aboubakr. "Medium Access Control, Packet Routing, and Internet Gateway Placement in Vehicular Ad Hoc Networks." Thesis, 2014. http://hdl.handle.net/10012/8314.
Повний текст джерелаDas, Kaushik. "Multi-Agent Positional Consensus Under Various Information Paradigms." Thesis, 2013. http://hdl.handle.net/2005/2604.
Повний текст джерелаPlaatjies, Lydia-Anne. "SMS's at the Public Broadcaster to control editorial decision-making." Thesis, 2012. http://hdl.handle.net/10539/11766.
Повний текст джерелаThis study looks at how short message services (SMS’s) was used at the Public Broadcaster to control decision making during the period November 2008 and April 2009. The main argument of this thesis is: 1. How did mobile phones reconfigured control in the newsroom of the public broadcaster 2. The public broadcaster management and the SABC newsroom in Johannesburg did not fulfil the mandate of the public broadcaster doing the study period because of political pressure via SMS 3. Editors did not protect journalists and producers against those with political power. The reason for doing this study is that there are many studies that focus on the positives of digital technologies but very little research has been done about the possible negatives of this innovation in the newsroom. The study acknowledges the advantages of having digital technology as an added communication tool in the newsroom but argues that people with political power can also use mobile technology as surveillance tool to control the decision-making process in the newsroom. SMS’s as a digital technology contributed to a new form of control in the newsroom and sending and receiving of SMS made it difficult for news editors to follow proper news decision-making processes and editorial guidelines which impacted on the role of the public broadcaster. This resulted in either self-censorship, job insecurity or some people even left the newsroom. The literature review gives an overview of the principles of public broadcasting, such as autonomous, inclusive and balanced with very little interference and how it is realised within the structure and dynamics of the newsroom. The study looks at theories of control, and gatekeeping, gatewatching as an editorial function and the impact of SMS’s on these established roles in the newsroom. The study provides a theoretical understanding of political control and its interplay with and effects on the public broadcaster mandate. The research methodology is grounded in the qualitative paradigm. The methods utilised is a case study and semi-structured interviews supported by archived newspaper articles to answer the question: how short message services (SMS’s) was used at the Public Broadcaster to control decision making.
Khoshnevis, Behrouz. "Multiple-antenna Communications with Limited Channel State Information." Thesis, 2011. http://hdl.handle.net/1807/30036.
Повний текст джерелаΚόκκινος, Βασίλειος. "Μελέτη και ανάλυση μηχανισμών βελτιστοποίησης ελέγχου ισχύος σε κινητά δίκτυα επικοινωνιών". Thesis, 2009. http://nemertes.lis.upatras.gr/jspui/handle/10889/2832.
Повний текст джерелаThe rapid growth of mobile communications networks has involved an increasing demand for wireless, multimedia communication. The fast development of this area was mainly motivated by the requirements of modern market for a unified and functional system of mobile communications that, at the same time, may provide numerous broadband services to its users. More specifically, in the recent years, the usage of third generation (3G) - Universal Mobile Telecommunication System (UMTS) cellular networks has begun to rise in most European countries, as in Greece. 3G networks have replaced the second generation mobile networks and moreover, are in position of offering advanced services to mobile users. However, the need for higher (broadband) speeds led to the further development of 3G networks and to the adoption of new technologies, with main representative the High Speed Packet Access (HSPA) technology. HSPA constitutes the evolution of UMTS and is known as 3.5G or 3G+ in order to indicate the upgrade from UMTS. However, despite the fact that HSPA technology is expected to allow the provision of numerous broadband services, the 3rd Generation Partnership Project (3GPP), the authorized organization for the standardization of new mobile technologies, already examines new technologies that will prevail in the mobile communications industry over the next decades. This novel project is known as Long Term Evolution (LTE) and aims at achieving increased data rates and reduced latency compared to UMTS and HSPA networks. Therefore, the mobile communications industry progressively evolves to next generation networks, with main target the achievement of the so called “Mobile Broadband”. Simultaneously, multimedia content and service providers show an increased interest in supporting multicast data in order to effectively manage and re-use the available network resources. Additionally, more and more users require access to applications and services that until today could only be accessed by conventional wired networks. Thus, real time applications and services may face low penetration today; however, they are expected to gain high interest in future mobile networks. These applications actually reflect a modern, future way of communication among mobile users. For instance, mobile TV is expected to be a “killer” application for 3G’s. Such mobile TV services include streaming live TV (news, weather forecasts etc.) and streaming video (such as video clips). All the above constitute a series of indicative emerging applications that necessitate advanced transmission techniques. One of the most significant steps towards the provision of such demanding services is the introduction of Multimedia Broadcast/Multicast Service (MBMS). MBMS is a point-to-multipoint service in which data is transmitted from a single source entity to multiple destinations, allowing the networks resources to be shared. Actually, MBMS extends the existing UMTS infrastructure and efficiently uses network and radio resources, both in the core network and most importantly, in the air interface of UMTS, where the bottleneck is placed to a large group of users. Therefore, MBMS constitutes an efficient way to support the plethora of the emerging wireless multimedia applications and services such as IP video conferencing and video streaming. The main requirement during the provision of MBMS multicast services is to make an efficient overall usage of radio and network resources. This necessity mainly translates into improved power control strategies, since the base stations’ transmission power is the limiting factor of downlink capacity in UMTS networks. Under this prism, power control is one of the most critical aspects in MBMS due to the fact that downlink transmission power in UMTS networks is a limited resource and must be shared efficiently among all MBMS users in a cell. Moreover, power control aims at minimizing the transmitted power, eliminating in this way the intercell interference. However, when misused, the use of power control may lead to a high level of wasted power and worse performance results. In order to have efficient power control in MBMS, one of the most critical aspects is the selection of the transport channel for the transmission of MBMS multicast traffic. MBMS services can be provided in each cell by either multiple point-to-point (PTP) channels or by a single point-to-multipoint (PTM) channel. A wrong channel selection may result to a significant capacity decrease, thus, preventing the mass delivery of multimedia applications. It is worth mentioning that channel selection is still an open issue in today’s MBMS infrastructure mainly due to its catalytic role in MBMS performance. In the frame of MBMS power control and transport channel selection several approaches have been proposed, with main representative the 3GPP MBMS Counting Mechanism. However, none of these approaches performs optimal transport channel selection either due to the fact that some of them do not consider the power consumption as the selection criterion or because of the fact that they do not consider all the available transport channels (or combination of them) for the transmission of the MBMS data. All the above stress the need for an advanced version of these mechanisms that could deliver multimedia content to a large number of mobile users in a more efficient and economic way. After taking into account the above analysis, objective of this dissertation is the study of power control issues in next generation mobile communication networks and the development of new approaches/ mechanisms for its optimization. To this direction, this dissertation analyzes and evaluates all the available UMTS and HSPA transport channels that could be used for the transmission of MBMS multicast services. Moreover, this dissertation investigates and evaluates several power saving techniques that aim at the efficient usage of radio and network resources. Techniques, such as Dynamic Power Setting, Macro Diversity Combining and Rate Splitting are capable of decreasing the power consumption during the provision of MBMS services and may enable the mass market delivery of multimedia services to mobile users. The evaluation of the available transport channels and power saving techniques will lead to the development of a novel scheme/mechanism that will enable the efficient selection of transport channels for the transmission of MBMS services. The proposed mechanism, which we call MBMS Channel Assignment Mechanism (or «MCAM»), is expected to optimally utilize the available power resources of base stations to MBMS sessions running in the network, resulting in that way to an extensive increase on the system’s capacity. Therefore, MCAM may allow the mass provision of multimedia data to a large number of mobile users, which makes MCAM a strong candidate for next generation networks.