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Sample records for delay broadcasting ttd

  1. Reliable Delay Constrained Multihop Broadcasting in VANETs

    Directory of Open Access Journals (Sweden)

    Koubek Martin

    2010-01-01

    Full Text Available Vehicular communication is regarded as a major innovative feature for in-car technology. While improving road safety is unanimously considered the major driving factor for the deployment of Intelligent Vehicle Safety Systems, the challenges relating to reliable multi-hop broadcasting are exigent in vehicular networking. In fact, safety applications must rely on very accurate and up-to-date information about the surrounding environment, which in turn requires the use of accurate positioning systems and smart communication protocols for exchanging information. Communications protocols for VANETs must guarantee fast and reliable delivery of information to all vehicles in the neighbourhood, where the wireless communication medium is shared and highly unreliable with limited bandwidth. In this paper, we focus on mechanisms that improve the reliability of broadcasting protocols, where the emphasis is on satisfying the delay requirements for safety applications. We present the Pseudoacknowledgments (PACKs scheme and compare this with existing methods over varying vehicle densities in an urban scenario using the network simulator OPNET.

  2. Minimizing Maximum Response Time and Delay Factor in Broadcast Scheduling

    CERN Document Server

    Chekuri, Chandra; Moseley, Benjamin

    2009-01-01

    We consider online algorithms for pull-based broadcast scheduling. In this setting there are n pages of information at a server and requests for pages arrive online. When the server serves (broadcasts) a page p, all outstanding requests for that page are satisfied. We study two related metrics, namely maximum response time (waiting time) and maximum delay-factor and their weighted versions. We obtain the following results in the worst-case online competitive model. - We show that FIFO (first-in first-out) is 2-competitive even when the page sizes are different. Previously this was known only for unit-sized pages [10] via a delicate argument. Our proof differs from [10] and is perhaps more intuitive. - We give an online algorithm for maximum delay-factor that is O(1/eps^2)-competitive with (1+\\eps)-speed for unit-sized pages and with (2+\\eps)-speed for different sized pages. This improves on the algorithm in [12] which required (2+\\eps)-speed and (4+\\eps)-speed respectively. In addition we show that the algori...

  3. Trichothiodystrophy: Photosensitive, TTD-P, TTD, Tay syndrome.

    Science.gov (United States)

    Lambert, W Clark; Gagna, Claude E; Lambert, Muriel W

    2010-01-01

    Although the term, "trichothiodystrophy" (TTD) refers to the hair anomalies in this group of patients, this is a heterogeneous, multisystem disease in which any or every organ in the body may be affected. Neuroectodermal derived tissues are particularly likely to be involved. This term was introduced by Price et alin 1980 to designate patients with sulfur-deficient brittle hair, which they recognized as a marker for this complex disease and designated it as a "neuroectodermal symptom complex". Patients with TTD have brittle hair and nails (associated with reduced content ofcysteine-rich matrix proteins), ichthyotic skin and physical and mental growth retardation. Ichthyosis is usually apparent at birth but much less so after the first few weeks of life. Other frequently associated features include ocular cataracts, infections and maternal complications related to pregnancy. Atrophy of subcutaneous fat may also be present. TTD occurs in a pattern of inheritance consistent with an autosomal recessive condition. The disease is extremely heterogeneous in severity and extent, with some patients showing no neurological deficiency. Others show severe, multisystem disease. Many patients die at a young age, most commonly due to infectious disease. TTD is part of a more broadly defined group of diseases identified as IBIDS (ichthyosis, brittle hair, impaired intelligence, decreased fertility and short stature). Photosensitive cases are also identified as PIBIDS (photosensitivity with IBIDS). Cases without manifest ichthyosis are also identified as PBIDS. These syndromes defy rigorous definition because of clinical variation between patients. The original two cases were described by Tay in oriental siblings, whose parents were first cousins; thus the disease is also known as Tay syndrome. The hairs in patients with TTD have a distinctive, diagnostically useful appearance on polarized light microscopy consisting of alternating light and dark bands known as the "tiger tail

  4. A GENETIC ALGORITHM FOR CONSTRUCTING BROADCAST TREES WITH COST AND DELAY CONSTRAINTS IN COMPUTER NETWORKS

    Directory of Open Access Journals (Sweden)

    Ahmed Y. Hamed

    2015-01-01

    Full Text Available We refer to the problem of constructing broadcast trees with cost and delay constraints in the networks as a delay-constrained minimum spanning tree problem in directed networks. Hence it is necessary determining a spanning tree of minimal cost to connect the source node to all nodes subject to delay constraints on broadcast routing. In this paper, we proposed a genetic algorithm for solving broadcast routing by finding the low-cost broadcast tree with minimum cost and delay constraints. In this research we present a genetic algorithm to find the broadcast routing tree of a given network in terms of its links. The algorithm uses the connection matrix of the given network to find the spanning trees and considers the weights of the links to obtain the minimum spanning tree. Our proposed algorithm is able to find a better solution, fast convergence speed and high reliability. The scalability and the performance of the algorithm with increasing number of network nodes are also encouraging.

  5. On minimizing the maximum broadcast decoding delay for instantly decodable network coding

    KAUST Repository

    Douik, Ahmed S.

    2014-09-01

    In this paper, we consider the problem of minimizing the maximum broadcast decoding delay experienced by all the receivers of generalized instantly decodable network coding (IDNC). Unlike the sum decoding delay, the maximum decoding delay as a definition of delay for IDNC allows a more equitable distribution of the delays between the different receivers and thus a better Quality of Service (QoS). In order to solve this problem, we first derive the expressions for the probability distributions of maximum decoding delay increments. Given these expressions, we formulate the problem as a maximum weight clique problem in the IDNC graph. Although this problem is known to be NP-hard, we design a greedy algorithm to perform effective packet selection. Through extensive simulations, we compare the sum decoding delay and the max decoding delay experienced when applying the policies to minimize the sum decoding delay and our policy to reduce the max decoding delay. Simulations results show that our policy gives a good agreement among all the delay aspects in all situations and outperforms the sum decoding delay policy to effectively minimize the sum decoding delay when the channel conditions become harsher. They also show that our definition of delay significantly improve the number of served receivers when they are subject to strict delay constraints.

  6. Secrecy Degrees of Freedom of MIMO Broadcast Channels with Delayed CSIT

    CERN Document Server

    Yang, Sheng; Piantanida, Pablo; Shamai, Shlomo

    2011-01-01

    The degrees of freedom (DoF) of the two-user Gaussian multiple-input and multiple-output (MIMO) broadcast channel with confidential message (BCC) is studied under the assumption that delayed channel state information (CSI) is available at the transmitter. We characterize the optimal secrecy DoF (SDoF) region and show that it can be achieved by a simple artificial noise alignment (ANA) scheme. The proposed scheme sends the confidential messages superposed with the artificial noise over several time slots. Exploiting delayed CSI, the transmitter aligns the signal in such a way that the useful message can be extracted at the intended receiver but is completely drowned by the artificial noise at the unintended receiver. The proposed scheme can be interpreted as a non-trivial extension of Maddah-Ali Tse (MAT) scheme and enables us to quantify the resource overhead, or equivalently the DoF loss, to be paid for the secrecy communications.

  7. Mode Switching for the Multi-Antenna Broadcast Channel Based on Delay and Channel Quantization

    Directory of Open Access Journals (Sweden)

    Jun Zhang

    2009-01-01

    Full Text Available Imperfect channel state information degrades the performance of multiple-input multiple-output (MIMO communications; its effects on single-user (SU and multiuser (MU MIMO transmissions are quite different. In particular, MU-MIMO suffers from residual interuser interference due to imperfect channel state information while SU-MIMO only suffers from a power loss. This paper compares the throughput loss of both SU and MU-MIMO in the broadcast channel due to delay and channel quantization. Accurate closed-form approximations are derived for achievable rates for both SU and MU-MIMO. It is shown that SU-MIMO is relatively robust to delayed and quantized channel information, while MU-MIMO with zero-forcing precoding loses its spatial multiplexing gain with a fixed delay or fixed codebook size. Based on derived achievable rates, a mode switching algorithm is proposed, which switches between SU and MU-MIMO modes to improve the spectral efficiency based on average signal-to-noise ratio (SNR, normalized Doppler frequency, and the channel quantization codebook size. The operating regions for SU and MU modes with different delays and codebook sizes are determined, and they can be used to select the preferred mode. It is shown that the MU mode is active only when the normalized Doppler frequency is very small, and the codebook size is large.

  8. Delay-limited capacity of fading multiple access and broadcast channels in the low power regime

    KAUST Repository

    Rezki, Zouheir

    2015-09-11

    We study delay-limited (also called zero-outage) capacity region of the fading multi-access channel (MAC) with Gaussian noise and perfect channel state information (CSI) at the receiver and at the transmitters (CSI-TR), in the low-power regime. We show that for fading channels where the MAC capacity region is strictly positive, it has a multidimensional rectangle structure and thus is simply characterized by single user capacity points. More specifically, we show that at low power, the boundary surface of the capacity region shrinks to a single point corresponding to the sum-rate maximizer and that the coordinates of this point coincide with single user capacity bounds. Using the duality of the Gaussian MAC and broadcast channels (BC), we show that time-sharing (or time division multiple access (TDMA)) is asymptotically optimal. © 2015 IEEE.

  9. Broadcast Channels with Delayed Finite-Rate Feedback: Predict or Observe?

    CERN Document Server

    Xu, Jiaming; Jafar, Syed A

    2011-01-01

    Most multiuser precoding techniques require accurate transmitter channel state information (CSIT) to maintain orthogonality between the users. Such techniques have proven quite fragile in time-varying channels because the CSIT is inherently imperfect due to estimation and feedback delay, as well quantization noise. An alternative approach recently proposed by Maddah-Ali and Tse (MAT) allows for significant multiplexing gain in the multi-input single-output (MISO) broadcast channel (BC) even with transmit CSIT that is completely stale, i.e. uncorrelated with the current channel state. With $K$ users, their scheme claims to lose only a $\\log(K)$ factor relative to the full $K$ degrees of freedom (DoF) attainable in the MISO BC with perfect CSIT for large $K$. However, their result does not consider the cost of the feedback, which is potentially very large in high mobility (short channel coherence time). In this paper, we more closely examine the MAT scheme and compare its DoF gain to single user transmission (w...

  10. PENDAMPINGAN MINUM TABLET TAMBAH DARAH (TTD DAPAT MENINGKATKAN KEPATUHAN KONSUMSI TTD PADA IBU HAMIL ANEMIA

    Directory of Open Access Journals (Sweden)

    Aditianti Aditianti

    2015-12-01

    Full Text Available ABSTRACTAnemia contributed 20 persen the death of pregnancy. Low consumption of iron is one of the cause of anemia prevalences among pregnant women. Iron intake can be gained from iron tablet. However the iron tabletconsumption still very low. The purpose of this study was to obtain the role of family and posyandu kadre support to the compliance of iron tablet consumption among anemic pregnant women and its relation tohaemoglobin levels of anemic pregnant women. The research design was quasi experimental Anemic pregnant women as a sample respondens were divided into two groups, 29 in the intervention group and 32 in thecontrol group. The study was conducted at Cibungbulang and Pamijahan sub district, Bogor. Compliance measurements using MMAS - 8 (Morisky Medication Adherence Scale - 8 questionnaires. Compliance of irontablet consumption categorized by low, middle and high. The intervention was counseling about anemia and how important iron tablet consumption among pregnant women to their family (husband/parents/in-laws/otherclose relatives or posyandu cadre whose lived in the same house or as their neighbour. Data analysis was performed using Chi - square and different t-test. The results showed that the anemic pregnant women withsupport from their family and posyandu cadre improve their compliance of iron tablet (p< 0,05.Keywords: anemia, iron tablet, family and posyandu cadre support, complianceABSTRAKAnemia memberikan kontribusi hingga 20 persen terhadap semua kematian pada kehamilan. Salah satu penyebab tingginya prevalensi anemia adalah rendahnya asupan zat besi. Salah satu sumber asupan zat besi berasal dari tablet tambah darah (TTD, namun kepatuhan mengonsumsinya masih sangat rendah. Tujuan penelitian ini adalah mendapatkan pengaruh peran pendamping terhadap kepatuhan konsumsi TTD dan hubungannya dengan kadar hemoglobin (Hb ibu hamil anemia. Desain penelitian adalah kuasi eksperimen. Responden adalah ibu hamil anemia, yang dibagi menjadi

  11. Accuracy of travel time distribution (TTD) models as affected by TTD complexity, observation errors, and model and tracer selection

    Science.gov (United States)

    Green, Christopher T.; Zhang, Yong; Jurgens, Bryant C.; Starn, J. Jeffrey; Landon, Matthew K.

    2014-01-01

    Analytical models of the travel time distribution (TTD) from a source area to a sample location are often used to estimate groundwater ages and solute concentration trends. The accuracies of these models are not well known for geologically complex aquifers. In this study, synthetic datasets were used to quantify the accuracy of four analytical TTD models as affected by TTD complexity, observation errors, model selection, and tracer selection. Synthetic TTDs and tracer data were generated from existing numerical models with complex hydrofacies distributions for one public-supply well and 14 monitoring wells in the Central Valley, California. Analytical TTD models were calibrated to synthetic tracer data, and prediction errors were determined for estimates of TTDs and conservative tracer (NO3−) concentrations. Analytical models included a new, scale-dependent dispersivity model (SDM) for two-dimensional transport from the watertable to a well, and three other established analytical models. The relative influence of the error sources (TTD complexity, observation error, model selection, and tracer selection) depended on the type of prediction. Geological complexity gave rise to complex TTDs in monitoring wells that strongly affected errors of the estimated TTDs. However, prediction errors for NO3− and median age depended more on tracer concentration errors. The SDM tended to give the most accurate estimates of the vertical velocity and other predictions, although TTD model selection had minor effects overall. Adding tracers improved predictions if the new tracers had different input histories. Studies using TTD models should focus on the factors that most strongly affect the desired predictions.

  12. Optical True Time Delay for Phased Array Antennas Composed of 2×2 Optical MEMS Switches and Fiber Delay Lines

    Institute of Scientific and Technical Information of China (English)

    Back-Song; Lee; Jong-Dug; Shin; Boo-Gyoun; Kim

    2003-01-01

    We proposed an optical true time delay (TTD) for phased array antennas (PAAs) composed of 2×2 optical MEMS switches, single-mode fiber delay lines, and a fixed wavelength laser diode. A 3-bit TTD for 10 GHz PAAs was implemented with a time delay error less than ± 0.2 ps.

  13. Delay performance of a broadcast spectrum sharing network in Nakagami-m fading

    KAUST Repository

    Khan, Fahd Ahmed

    2014-03-01

    In this paper, we analyze the delay performance of a point-to-multipoint secondary network (P2M-SN), which is concurrently sharing the spectrum with a point-to-multipoint primary network (P2M-PN). The channel is assumed to be independent but not identically distributed (i.n.i.d.) and has Nakagami-m fading. A constraint on the peak transmit power of the secondary-user transmitter (SU-Tx) is considered, in addition to the peak interference power constraint. The SU-Tx is assumed to be equipped with a buffer and is modeled using the M/G/1 queueing model. The performance of this system is analyzed for two scenarios: 1) P2M-SN does not experience interference from the primary network (denoted by P2M-SN-NI), and 2) P2M-SN does experience interference from the primary network (denoted by P2M-SN-WI). The performance of both P2M-SN-NI and P2M-SN-WI is analyzed in terms of the packet transmission time, and the closed-form cumulative density function (cdf) of the packet transmission time is derived for both scenarios. Furthermore, by utilizing the concept of timeout, an exact closed-form expression for the outage probability of the P2M-SN-NI is obtained. In addition, an accurate approximation for the outage probability of the P2M-SN-WI is also derived. Furthermore, for the P2M-SN-NI, the analytic expressions for the total average waiting time (TAW-time) of packets and the average number of packets waiting in the buffer of the SU-Tx are also derived. Numerical simulations are also performed to validate the derived analytical results. © 1967-2012 IEEE.

  14. Bluetooth broadcasting

    OpenAIRE

    Ho, Johan

    2006-01-01

    Background: The wireless technology Bluetooth has rapidly become more commonly supported by electronic devices like mobile phones and PDAs. Several companies are currently developing Bluetooth broadcasting systems to use for marketing. This report is a result of researching the use of Bluetooth broadcasting for delivering information for more general purposes, how well Bluetooth actually works for broadcasting, and also on the topic of user privacy. Results: Broadcasting with Bluetooth did w...

  15. Broadcasting house

    DEFF Research Database (Denmark)

    Sattrup, Peter Andreas

    2008-01-01

    Regarding the transformation of the Danish Broadcasting Hq. (1934-1945) in Frederiksberg by Vilhelm Lauritzen into the Royal Danish Academy of Music. Analysis, principles, flexibility and change.......Regarding the transformation of the Danish Broadcasting Hq. (1934-1945) in Frederiksberg by Vilhelm Lauritzen into the Royal Danish Academy of Music. Analysis, principles, flexibility and change....

  16. The thought-translation device (TTD): neurobehavioral mechanisms and clinical outcome.

    Science.gov (United States)

    Birbaumer, Niels; Hinterberger, Thilo; Kübler, Andrea; Neumann, Nicola

    2003-06-01

    The thought-translation device (TTD) consists of a training device and spelling program for the completely paralyzed using slow-cortical brain potentials (SCP). During the training phase, the self-regulation of SCPs is learned through visual-auditory feedback and positive reinforcement of SCPs; during the spelling phase, patients select letters or words with their SCPs. A psychophysiological system for detection of cognitive functioning in completely paralyzed patients is an integral part of the TTD. The neurophysiological and anatomical basis of SCP-regulation was investigated by recording of BOLD-response in functional magnetic resonance imaging. Results showed involvement of basal ganglia and premotor cortex for required SCP positivity. The clinical outcome of 11 paralyzed patients using the TTD and quality of life of severely paralyzed patients is described. First attempts to improve learning of brain regulation with transcranial magnetic stimulation were successful.

  17. Public Broadcasting.

    Science.gov (United States)

    Shooshan, Harry M.; Arnheim, Louise

    This paper, the second in a series exploring future options for public policy in the communications and information arenas, examines some of the issues underlying public broadcasting, primarily public television. It advances two reasons why quality local public television programming is scarce: funds for the original production of programming have…

  18. Next generation mobile broadcasting

    CERN Document Server

    Gómez-Barquero, David

    2013-01-01

    Next Generation Mobile Broadcasting provides an overview of the past, present, and future of mobile multimedia broadcasting. The first part of the book-Mobile Broadcasting Worldwide-summarizes next-generation mobile broadcasting technologies currently available. This part covers the evolutions of the Japanese mobile broadcasting standard ISDB-T One-Seg, ISDB-Tmm and ISDB-TSB; the evolution of the South Korean T-DMB mobile broadcasting technology AT-DMB; the American mobile broadcasting standard ATSC-M/H; the Chinese broadcasting technologies DTMB and CMMB; second-generation digital terrestrial

  19. History of Satellite TV Broadcasting and Satellite Broadcasting Market in Turkey

    Directory of Open Access Journals (Sweden)

    Mihalis KUYUCU

    2015-09-01

    Full Text Available The present study analyses the satellite broadcasting that is the first important development that emerged as a result of digitalization in communication technologies and its reflections in Turkey. As the first milestone in the globalization of television broadcasting, satellite broadcasting provided substantial contribution towards the development of the media. Satellite bro adcasting both increased the broadcasting quality and geographical coverage of the television media. A conceptual study was carried out in the first part of the study in connection with the history of satellite broadcasting in Turkey and across the world. In the research part of the study, an analysis was performed on 160 television channels that broadcast in Turkey via Turksat Satellite. Economic structure of the television channels broadcasting in Turkey via satellite was studied and an analysis was perfo rmed on the operational structure of the channels. As a result of the study, it was emphasized that the television channels broadcasting via satellite platform also use other platforms for the purpose of spreading their broadcasts and television channel ow ners make investments in different branches of the media, too. Capital owners invest in different business areas other than the media although television channels broadcasting via Turksat mostly focus on thematic broadcasting and make effort to generate ec onomic income from advertisements. Delays are encountered in the course of the convergence between the new media and television channels that broadcast only from the satellite platform and such television channels experience more economic problems than the other channels. New media and many TV broadcasting platforms emerged as a result of the developments in the communication technologies. In television broadcasting, satellite platform is not an effective platform on its own. Channels make effort to reach t o more people by using other platforms in addition to

  20. Quantum broadcast communication

    Institute of Scientific and Technical Information of China (English)

    Wang Jian; Zhang Quan; Tang Chao-Jing

    2007-01-01

    Broadcast encryption allows the sender to securely distribute his/her secret to a dynamically changing group of users over a broadcast channel. In this paper, we just take account of a simple broadcast communication task in quantum scenario, in which the central party broadcasts his secret to multi-receiver via quantum channel. We present three quantum broadcast communication schemes. The first scheme utilizes entanglement swapping and GreenbergerHorne-Zeilinger state to fulfil a task that the central party broadcasts the secret to a group of receivers who share a group key with him. In the second scheme, based on dense coding, the central party broadcasts the secret to multi-receiver,each of which shares an authentication key with him. The third scheme is a quantum broadcast communication scheme with quantum encryption, in which the central party can broadcast the secret to any subset of the legal receivers.

  1. Homeostatic Imbalance between Apoptosis and Cell Renewal in the Liver of Premature Aging XpdTTD Mice

    Science.gov (United States)

    Park, Jung Yoon; Cho, Mi-Ook; Leonard, Shanique; Calder, Brent; Mian, I. Saira; Kim, Woo Ho; Wijnhoven, Susan; van Steeg, Harry; Mitchell, James; van der Horst, Gijsbertus T. J.; Hoeijmakers, Jan; Cohen, Pinchas; Vijg, Jan; Suh, Yousin

    2008-01-01

    Unrepaired or misrepaired DNA damage has been implicated as a causal factor in cancer and aging. XpdTTD mice, harboring defects in nucleotide excision repair and transcription due to a mutation in the Xpd gene (R722W), display severe symptoms of premature aging but have a reduced incidence of cancer. To gain further insight into the molecular basis of the mutant-specific manifestation of age-related phenotypes, we used comparative microarray analysis of young and old female livers to discover gene expression signatures distinguishing XpdTTD mice from their age-matched wild type controls. We found a transcription signature of increased apoptosis in the XpdTTD mice, which was confirmed by in situ immunohistochemical analysis and found to be accompanied by increased proliferation. However, apoptosis rate exceeded the rate of proliferation, resulting in homeostatic imbalance. Interestingly, a metabolic response signature was observed involving decreased energy metabolism and reduced IGF-1 signaling, a major modulator of life span. We conclude that while the increased apoptotic response to endogenous DNA damage contributes to the accelerated aging phenotypes and the reduced cancer incidence observed in the XpdTTD mice, the signature of reduced energy metabolism is likely to reflect a compensatory adjustment to limit the increased genotoxic stress in these mutants. These results support a general model for premature aging in DNA repair deficient mice based on cellular responses to DNA damage that impair normal tissue homeostasis. PMID:18545656

  2. Video Broadcasting Using Queue Proportional Scheduling

    Directory of Open Access Journals (Sweden)

    Dimitris Toumpakaris

    2007-01-01

    using a Markov Chain approach leading to a method for approximating the packet delay distribution. Based on the resulting distribution, it is discussed how the video encoding rate can be chosen in order to reduce the expected distortion of streams transmitted through Broadcast Channels.

  3. Radio broadcasting via satellite

    Science.gov (United States)

    Helm, Neil R.; Pritchard, Wilbur L.

    1990-10-01

    Market areas offering potential for future narrowband broadcast satellites are examined, including international public diplomacy, government- and advertising-supported, and business-application usages. Technical issues such as frequency allocation, spacecraft types, transmission parameters, and radio receiver characteristics are outlined. Service and system requirements, advertising revenue, and business communications services are among the economic issues discussed. The institutional framework required to provide an operational radio broadcast service is studied, and new initiatives in direct broadcast audio radio systems, encompassing studies, tests, in-orbit demonstrations of, and proposals for national and international commercial broadcast services are considered.

  4. Milestones in Broadcasting: Antennas.

    Science.gov (United States)

    Media in Education and Development, 1985

    1985-01-01

    Briefly describes the development of antennas in the prebroadcast era (elevated antenna, selectivity to prevent interference between stations, birth of diplex, directional properties, support structures), as well as technological developments used in long-, medium-, and short-wave broadcasting, VHF/FM and television broadcasting, and satellite…

  5. Educational Broadcasting--Radio.

    Science.gov (United States)

    Ahamed, Uvais; Grimmett, George

    This manual is intended for those who must conduct educational radio broadcasting training courses in Asia-Pacific countries without the resources of experienced personnel, as well as for individuals to use in self-learning situations. The selection of material has been influenced by the need to use broadcasting resources effectively in programs…

  6. Implications of Internet on Broadcasting

    DEFF Research Database (Denmark)

    Henten, Anders; Tadayoni, Reza

    One of the main challenges within broadcasting research in the recent years has been to understand the evolution from traditional broadcasting to digital broadcasting. The aim of this paper is to step further and give an analysis of Internet’s influence on traditional broadcasting services...

  7. Financing Public Service Broadcasting

    DEFF Research Database (Denmark)

    Berg, Christian Edelvold; Lund, Anker Brink

    2012-01-01

    Broadcasting (PSB) financing regimes in Europe, concluding that Denmark, Finland, Iceland, Norway, and Sweden may still be considered conventional, licence fee PSB countries, but with some interesting differences in relation to competitive and market oriented alternatives of resource provision...

  8. Three Dimensionally Interconnected Silicon Nanomembranes for Optical Phased Array (OPA) and Optical True Time Delay (TTD) Applications

    Science.gov (United States)

    2012-06-01

    lithography ( EBL ) and reactive-ion-etching (RIE) was described in [7]. After etching of the silicon device layer, a silicon dioxide layer of 1.5µm was...nanomembrane etching. The MMI coupler on the top layer was fabricated using the same EBL and RIE process as the one on the bottom layer. Fig. 5-1 (a...limitations, the trench width is fixed to 80 nm with a corresponding sub of 388 nm. The designed GC is fabricated using electron beam lithography ( EBL ) and

  9. Broadcasters Hit Home Straight

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    China’s broadcasters enter the final phase of preparations fbr next year’s Olympic Games The most critical information we are keen on delivering is that every- thing is going well,said Sun Weijia, Director of the Media Operations Department of the Beijing Organizing Committee for the Games of of the XXIX Olympiad(BOCOG)on the eve of the 2007 World Broadcasters Conference.

  10. Hadamard quantum broadcast channels

    Science.gov (United States)

    Wang, Qingle; Das, Siddhartha; Wilde, Mark M.

    2017-10-01

    We consider three different communication tasks for quantum broadcast channels, and we determine the capacity region of a Hadamard broadcast channel for these various tasks. We define a Hadamard broadcast channel to be such that the channel from the sender to one of the receivers is entanglement-breaking and the channel from the sender to the other receiver is complementary to this one. As such, this channel is a quantum generalization of a degraded broadcast channel, which is well known in classical information theory. The first communication task we consider is classical communication to both receivers, the second is quantum communication to the stronger receiver and classical communication to other, and the third is entanglement-assisted classical communication to the stronger receiver and unassisted classical communication to the other. The structure of a Hadamard broadcast channel plays a critical role in our analysis: The channel to the weaker receiver can be simulated by performing a measurement channel on the stronger receiver's system, followed by a preparation channel. As such, we can incorporate the classical output of the measurement channel as an auxiliary variable and solve all three of the above capacities for Hadamard broadcast channels, in this way avoiding known difficulties associated with quantum auxiliary variables.

  11. [Inspirations from natural products based drug research and development for Chinese medicine research--analysis of natural products recoded in TTD].

    Science.gov (United States)

    Chen, Xiu-Ping; Lu, Jin-Jian; Guo, Jia-Jie; Bao, Jiao-Lin; Xu, Wen-Shan; Ding, Qian; Wang, Yi-Tao

    2012-11-01

    Natural product is an important source of new drug research and development (R&D). Traditional Chinese medicine (TCM) innovation is the key step for its modernization and internationalization. However, due to the complexity of TCM, there are many difficulties and confusions in this process. Target-based drug discovery is the mainstream model and method of R&D. TTD, short for therapeutic target database, is developed by National University of Singapore. Besides a large amount of information on drug targets, the database also contains considerable information related to natural products. This paper briefly introduces the TTD, analyzes the natural products derived drugs/compounds recorded in TTD, which we think might provide some inspiration for the innovation of TCM.

  12. A Novel Broadcast Scheme DSR-based Mobile Adhoc Networks

    Directory of Open Access Journals (Sweden)

    Muneer Bani Yassein

    2016-04-01

    Full Text Available Traffic classification seeks to assign packet flows to an appropriate quality of service (QoS. Despite many studies that have placed a lot of emphasis on broadcast communication, broadcasting in MANETs is still a problematic issue. Due to the absence of the fixed infrastructure in MANETs, broadcast is an essential operation for all network nodes. Although the blind flooding is the simplest broadcasting technique, it is inefficient and lacks resource utilization efficiency. One of the proposed schemes to mitigate the blind flooding deficiency is the counter based broadcast scheme that depends on the number of received duplicate packets between the node and its neighbors, where the node compares the duplicate packet itself and each neighbor node that previously re-broadcasted a packet. Due to the fact that existing counter-based schemes are mainly based on the fixed counter based approach, these schemes are not efficient in different operating conditions. Thus, unlike existing studies, this paper proposes a dynamic counter based threshold value and examines its effectiveness under the Dynamic Source Routing Protocol (DSR which is one of the well-known on-demand routing protocols. Specifically, we develop in this paper a new counter based broadcast algorithm under the umbrella of the DSR, namely, Inspired Counter Based Broadcasting (DSR-ICB. Using various simulation experiments, DSR-ICB has shown good performance especially in terms of delay and the number of redundant packets.

  13. 47 CFR 1.4000 - Restrictions impairing reception of television broadcast signals, direct broadcast satellite...

    Science.gov (United States)

    2010-10-01

    ... broadcast signals, direct broadcast satellite services or multichannel multipoint distribution services. 1... Broadcast Satellite Services, or Multichannel Multipoint Distribution Services or the Ability To Receive or... broadcast signals, direct broadcast satellite services or multichannel multipoint distribution services....

  14. The Special Broadcasting Service and Australia's Ethnic Broadcasting Activities.

    Science.gov (United States)

    Sklovsky, G.A.

    1979-01-01

    Broadcasting services for non-English speaking peoples in Australia are reviewed both for radio and television. Broadcasting criteria for ethnic groups, funding levels, and current facilities are discussed. (RAO)

  15. Data broadcasting: merging digital broadcasting with the Internet

    DEFF Research Database (Denmark)

    2001-01-01

    resulting from dense traffic on the Internet * Considers the technical implications of data broadcasting over different network infrastructures * Examines the process of developing and launching multimedia channels in a data broadcasting environment. Essential, up to date coverage for executives...

  16. Unified broadcast in sensor networks

    DEFF Research Database (Denmark)

    Hansen, Morten Tranberg; Jurdak, Raja; Kusy, Branislav

    2011-01-01

    to consolidate these broadcasts focus on piggybacking information into existing services but such tight coupling between protocols limits code reuse and interoperability of applications. We present Unified Broadcast (UB) which combines broadcasts from multiple protocols while maintaining a modular architecture......Complex sensor network applications include multiple services such as collection, dissemination, time synchronization, and failure detection protocols. Many of these protocols require local state maintenance through periodic broadcasts which leads to high control overhead. Recent attempts...

  17. Generalized no-broadcasting theorem.

    Science.gov (United States)

    Barnum, Howard; Barrett, Jonathan; Leifer, Matthew; Wilce, Alexander

    2007-12-14

    We prove a generalized version of the no-broadcasting theorem, applicable to essentially any nonclassical finite-dimensional probabilistic model satisfying a no-signaling criterion, including ones with "superquantum" correlations. A strengthened version of the quantum no-broadcasting theorem follows, and its proof is significantly simpler than existing proofs of the no-broadcasting theorem.

  18. From Broadcast to Podcast

    DEFF Research Database (Denmark)

    Fibiger, Bo

    2007-01-01

    This paper will present the development from broadcasted educational television up to the actual use of streaming video and mobile units in eLearning. The paper will discuss the following topics: what can we learn from history? – and what are the new challenges and possibilities in mobile technol...

  19. Restricted broadcast process theory

    NARCIS (Netherlands)

    Ghassemi, F.; Fokkink, W.J.; Movaghar, A.; Cerone, A.; Gruner, S.

    2008-01-01

    We present a process algebra for modeling and reasoning about Mobile Ad hoc Networks (MANETs) and their protocols. In our algebra we model the essential modeling concepts of ad hoc networks, i.e. local broadcast, connectivity of nodes and connectivity changes. Connectivity and connectivity changes a

  20. Virtue Broadcasting - directorate change

    CERN Multimedia

    2003-01-01

    The Board of Virtue Broadcasting Plc ("Virtue") have announced the appointment of Mr. Klaus Ackerstaff as the CEO of the main Board. He began his professional career at CERN, where he was responsible for the IT infrastructure of the OPAL (particle physics) project (1/2 page).

  1. Time-Domain Measurement of Optical True-Time Delay in Two-Dimensional Photonic Crystal Waveguides

    Institute of Scientific and Technical Information of China (English)

    ZHANG Geng-Yan; ZHOU Qiang; CUI Kai-Yu; ZHANG Wei; HUANG Yi-Dong

    2010-01-01

    @@ We report on the realization of optical true-time delay(TTD)by a two-dimensional photonic crystal waveguide(PCWG).Design and fabrication of the PCWG are investigated.The spectral dependence of the group delay is measured by detecting the phase shifts of a 10 GHz modulating signal,and a maximum delay of 25 ± 2.5 ps is obtained.

  2. Data broadcasting: merging digital broadcasting with the Internet

    DEFF Research Database (Denmark)

    2001-01-01

    This fully revised and updated edition of Data Broadcasting presents an exhaustive overview of the specific data broadcasting and bordering technologies concerned. Answering a wealth of questions, it describes this new technology in detail, examining how it differs from established technologies......, and for what means it can be used. It also analyses data broadcasting from the perspectives of both the medium and business. * Features the latest developments in electronic media * Discusses the major media opportunities of data broadcasting * Shows how data broadcasting can overcome many notorious problems...... resulting from dense traffic on the Internet * Considers the technical implications of data broadcasting over different network infrastructures * Examines the process of developing and launching multimedia channels in a data broadcasting environment. Essential, up to date coverage for executives...

  3. Water vapor estimation using digital terrestrial broadcasting waves

    Science.gov (United States)

    Kawamura, S.; Ohta, H.; Hanado, H.; Yamamoto, M. K.; Shiga, N.; Kido, K.; Yasuda, S.; Goto, T.; Ichikawa, R.; Amagai, J.; Imamura, K.; Fujieda, M.; Iwai, H.; Sugitani, S.; Iguchi, T.

    2017-03-01

    A method of estimating water vapor (propagation delay due to water vapor) using digital terrestrial broadcasting waves is proposed. Our target is to improve the accuracy of numerical weather forecast for severe weather phenomena such as localized heavy rainstorms in urban areas through data assimilation. In this method, we estimate water vapor near a ground surface from the propagation delay of digital terrestrial broadcasting waves. A real-time delay measurement system with a software-defined radio technique is developed and tested. The data obtained using digital terrestrial broadcasting waves show good agreement with those obtained by ground-based meteorological observation. The main features of this observation are, no need for transmitters (receiving only), applicable wherever digital terrestrial broadcasting is available and its high time resolution. This study shows a possibility to estimate water vapor using digital terrestrial broadcasting waves. In the future, we will investigate the impact of these data toward numerical weather forecast through data assimilation. Developing a system that monitors water vapor near the ground surface with time and space resolutions of 30 s and several kilometers would improve the accuracy of the numerical weather forecast of localized severe weather phenomena.

  4. Quantum broadcast channels

    CERN Document Server

    Yard, J; Devetak, I; Yard, Jon; Hayden, Patrick; Devetak, Igor

    2006-01-01

    We analyze quantum broadcast channels, which are quantum channels with a single sender and many receivers. Focusing on channels with two receivers for simplicity, we generalize a number of results from the network Shannon theory literature which give the rates at which two senders can receive a common message, while a personalized one is sent to one of them. Our first collection of results applies to channels with a classical input and quantum outputs. The second class of theorems we prove concern sending a common classical message over a quantum broadcast channel, while sending quantum information to one of the receivers. The third group of results we obtain concern communication over an isometry, giving the rates at quantum information can be sent to one receiver, while common quantum information is sent to both, in the sense that tripartite GHZ entanglement is established. For each scenario, we provide an additivity proof for an appropriate class of channels, yielding single-letter characterizations of the...

  5. Satellites in Canadian broadcasting

    Science.gov (United States)

    Siocos, C. A.

    The involvement of Canadian broadcasting and related enterprises in satellite telecommunications is surveyed. This includes point-to-point transmissions and direct ones to the general public. The mode of such utilizations is indicated in both these cases. For the forthcoming DBS systems the many types of service offerings and utilization concepts under discussion elasewhere are presented as well as the business prospects and regulatory climate offering them.

  6. Broadcast sound technology

    CERN Document Server

    Talbot-Smith, Michael

    1990-01-01

    Broadcast Sound Technology provides an explanation of the underlying principles of modern audio technology. Organized into 21 chapters, the book first describes the basic sound; behavior of sound waves; aspects of hearing, harming, and charming the ear; room acoustics; reverberation; microphones; phantom power; loudspeakers; basic stereo; and monitoring of audio signal. Subsequent chapters explore the processing of audio signal, sockets, sound desks, and digital audio. Analogue and digital tape recording and reproduction, as well as noise reduction, are also explained.

  7. Compact broadband 5-bit photonic true-time-delay module for phased-array antennas.

    Science.gov (United States)

    Fu, Z; Li, R; Chen, R T

    1998-04-01

    Photonic true-time-delay (TTD) lines offer many advantages over their electronic counterparts and are attracting more and more research effort. We demonstrate a device with 32 TTD lines (5-bit) based on substrate guided-wave propagation combined with slanted photopolymer volume phase gratings on a quartz substrate. System design, device fabrication, optimization of fan-out intensity uniformity, and device performance evaluation are addressed as well. The device has a measured bandwidth of up to 2.4 THz and a measured fan-out delay step of 50 ps. The fan-out beam intensity uniformity is within +/-10% . The packing density is 2.5 delay lines/cm(2), which is to our knowledge the highest demonstrated thus far.

  8. Multichannel broadcast based on home channel for cognitive radio sensor networks.

    Science.gov (United States)

    Zeng, Fanzi; Tang, Yuting; Pu, Jianjie

    2014-01-01

    Considering the limited resources and the dynamic spectrum distribution in the cognitive radio sensor networks (CRSN), a half-duplex Multichannel broadcast protocol for CRSN is presented based on the home channel. This protocol maintains the networks topology only through the home channel, so there is no need for the public channel to transmit the control information and no need for the synchronization. After network initialization, node broadcasts data via home channel in half-duplex transmission way. The simulation results show that, compared with complete broadcast, the proposed protocol effectively reduces broadcast delay and overhead.

  9. Broadcast Abstraction in a Stochastic Calculus for Mobile Networks

    DEFF Research Database (Denmark)

    Song, Lei; Godskesen, Jens Christian

    2012-01-01

    We introduce a continuous time stochastic broadcast calculus for mobile and wireless networks. The mobility between nodes in a network is modeled by a stochastic mobility function which allows to change part of a network topology depending on an exponentially distributed delay and a network...

  10. Broadcasting XORs: On the Application of Network Coding in Access Point-to-Multipoint Networks

    OpenAIRE

    Fouli, Kerim; Sergeev, Ivan; Maier, Martin; Casse, Jerome; Medard, Muriel

    2012-01-01

    We investigate network coding (NC) in access point-to-multi-point (PMP) broadcast networks. Characterized by a shared unicast upstream channel and a time-shared broadcast downstream channel, PMP networks are widely deployed in optical and wireless access networks. We develop a queuing-theoretic model of NC at the medium access control (MAC) sublayer and analyze the impact of NC on packet delay. Our analysis is validated through discrete-event simulation and demonstrates significant delay adva...

  11. An Efficient Periodic Broadcasting with Small Latency and Buffer Demand for Near Video on Demand

    Directory of Open Access Journals (Sweden)

    Ying-Nan Chen

    2012-01-01

    Full Text Available Broadcasting Protocols can efficiently transmit videos that simultaneously shared by clients with partitioning the videos into segments. Many studies focus on decreasing clients' waiting time, such as the fixed-delay pagoda broadcasting (FDPB and the harmonic broadcasting schemes. However, limited-capability client devices such as PDAs and set-top boxes (STBs suffer from storing a significant fraction of each video while it is being watched. How to reduce clients' buffer demands is thus an important issue. Related works include the staircase broadcasting (SB, the reverse fast broadcasting (RFB, and the hybrid broadcasting (HyB schemes. This work improves FDPB to save client buffering space as well as waiting time. In comparison with SB, RFB, and HyB, the improved FDPB scheme can yield the smallest waiting time under the same buffer requirements.

  12. Performance Analysis of Reuse Distance in Cooperative Broadcasting

    Directory of Open Access Journals (Sweden)

    Jimmi Grönkvist

    2016-01-01

    Full Text Available Cooperative broadcasting is a promising technique for robust broadcast with low overhead and delay in mobile ad hoc networks. The technique is attractive for mission-oriented mobile communication, where a majority of the traffic is of broadcast nature. In cooperative broadcasting, all nodes simultaneously retransmit packets. The receiver utilizes cooperative diversity in the simultaneously received signals. The retransmissions continue until all nodes are reached. After the packet has traveled a specific number of hops out from the source, denoted as reuse distance, the source node transmits a new broadcast packet in the time slot used for the previous broadcast packet. If the reuse distance is too small, interference causes packet loss in intermediate nodes. In the literature, a reuse distance of three is common. With an analysis based on a realistic interference model and real terrain data, we show that a reuse distance of at least four is necessary to avoid packet loss in sparsely connected networks, especially for high spectral efficiencies. For frequency hopping, widely used in military systems, we propose a novel method. This method almost eliminates interference for a reuse distance of three, increasing the throughput by 33% compared to systems with a reuse distance of four.

  13. Analysis of Broadcast Authentication Mechanism in Selected Network Topologies

    Directory of Open Access Journals (Sweden)

    T. Vanek

    2011-04-01

    Full Text Available This paper deals with simulation of the broadcast authentication protocols using Colored Petri Nets and further optimizations in Matlab environment. Typical application of broadcast authentication protocols can be configurations where only one transmitter with multiple recipients exists (such as message exchange in sensor networks routing protocols, or the leader election process in sensors network. Authentication of every packet seems to be very effective way to mitigate an attack, however resulting in increase of end-to-end delay. To mitigate this drawback, the broadcast authentication protocols have been proposed. Concept of optimization of the broadcast authentication protocol DREAM parameters in a special case of fully N-ary tree and general random topology containing the same amount of nodes with regard to delay and energy consumption minimization is showed in the paper. Protocol DREAM was taken as an example of broadcast authenticating protocol to show how Color Petri Nets can be used to create a fully functional model of the protocol.

  14. VETERAN BROADCASTER LEADS OLYMPIC CHARGE

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    With its leadership team and technological know-how, the Beijing Olympic Broadcasting Co. Ltd. endeavors to bring the Olympics live to people around the globe The first thing that Ma Guoli, Chief Operating Officer of the Beijing Olympic Broadcasting Co.

  15. Commercial satellite broadcasting for Europe

    Science.gov (United States)

    Forrest, J. R.

    1988-12-01

    A review is presented of the current television broadcasting situation in European countries, which involves a varied mix of terrestrial VHF or UHF systems and cable networks. A small market has emerged in Europe for receivers using the low-power telecommunications satellite transmission between the program providers and cable network companies. This is expected to change with the launch of medium-power pan-European telecommunication satellites (e.g. ASTRA, EUTELSAT II), which are now directly addressing the market of home reception. DBS (direct broadcast satellite) in the UK, using the D-MAC transmission standard, will offer three additional television channels, data broadcasting services, and a planned evolution to compatible forms of wide-screen, high-definition television. Comments are given on receiver and conditional access system standardization. Some views are expressed on satellite broadcasting as part of an overall broadcasting framework for the future.

  16. Broadcast-Based Spatial Queries

    Institute of Scientific and Technical Information of China (English)

    Kwang-Jin Park; Moon-Bae Song; Chong-Sun Hwang

    2005-01-01

    Indexing techniques have been developed for wireless data broadcast environments, in order to conserve the scarce power resources of the mobile clients. However, the use of interleaved index segments in a broadcast cycle increases the average access latency for the clients. In this paper, the broadcast-based spatial query processing methods (BBS)are presented for the location-based services. In the BBS, broadcasted data objects are sorted sequentially based on their locations, and the server broadcasts the location dependent data along with an index segment. Then, a sequential prefetching and caching scheme is designed to reduce the query response time. The performance of this scheme is investigated in relation to various environmental variables, such as the distributions of the data objects, the average speed of the clients and the size of the service area.

  17. Evolution of broadcast content distribution

    CERN Document Server

    Beutler, Roland

    2017-01-01

    This book discusses opportunities for broadcasters that arise with the advent of broadband networks, both fixed and mobile. It discusses how the traditional way of distributing audio-visual content over broadcasting networks has been complemented by the usage of broadband networks. The author shows how this also gives the possibility to offer new types of interactive or so-called nonlinear services. The book illustrates how change in distribution technology is accelerating the need for broadcasters around the world to adapt their content distribution strategy and how it will impact the portfolios of content they offer. Outlines the shift in broadcast content distribution paradigms and related strategic issues Provides an overview of the new broadcasting ecosystem encompassing new types of content, user habits, expectations, and devices Discusses complementary usage of different distribution technologies and platforms.

  18. EMS 诱变番茄自交系 TTD302A 的突变表型鉴定和分析%Identification and Analysis of Mutant Phenotype Tomato Inbred Line TTD302A Induced with EMS

    Institute of Scientific and Technical Information of China (English)

    杨建华; 崔霞; 常培培; 李翠; 李云洲; 梁燕

    2014-01-01

    为创制用于番茄遗传育种和基因功能研究的新种质,用0.7%的甲基磺酸乙酯(EMS)浸泡处理 TTD302A 种子8 h,清水冲洗后催芽育苗,定植于塑料大棚中,单株观察、单株留种。对 M2群体进行株系和单株的系统观察,表型表现一致的株系混合留种,有表型变异的单株进行单株留种,获得 M3种子。另外选取了15份出现典型变异性状的 M2材料进行 SSR 检测。通过对 M2群体表型性状的观察,共发现373个变异性状,297个变异单株,总的单株变异频率为7.1%。叶、花、果实和植株的表型变异频率依次为1.5%、2.8%、1.3%和2.4%。SSR 分析结果表明9份材料在 DNA 水平上有变异。%To create new tomato(Solanum lycopersicum L.)germplasm applied both to genetic modified breeding and functional genomics research on tomato,this study treated the seeds of TTD302A with 0.7% EMS for 8 h,then washed them by flowing water. M2 seeds were harvested from each plant independently in M1 generation. Afterwards,the agronomic traits and biological characters of each plant were both investigated and recorded in M2 generation at seedling stage,flowering fruit period and mature period,respectively. The leaves DNA of all mutation plants were extracted,of which 15 materials expressing typical variation characteristics were selected for SSR molecular marker detection. Finally we harvested M3 seeds from single plant expressing character mutation separately. Through observation on M2 group characters,we found 373 mutant characters and 297 mutant plants in total. The rate of all M2 phenotype mutation added up to 7.1%. It could be found that the mutation population contained abundant mutation types appearing in leaf,floral organ,fruit and plant. Their mutation rates were 1.5%,2.8%,1.3%,2.4%,respectively. The results of SSR analysis indicated that 9 materials had mutation in DNA level.

  19. Broadcasting Correlated Gaussians

    CERN Document Server

    Bross, Shraga; Tinguely, Stephan

    2007-01-01

    We consider the transmission of a bi-variate Gaussian source over a one-to-two power-limited Gaussian broadcast channel. Receiver 1 observes the transmitted signal corrupted by Gaussian noise and wishes to estimate the first component of the source. Receiver 2 observes the transmitted signal in larger Gaussian noise and wishes to estimate the second component. We seek to characterize the pairs of mean squared-error distortions that are simultaneously achievable at the two receivers. Our result is that below a certain SNR-threshold an "uncoded scheme" that sends a linear combination of the source components is optimal. The SNR-theshold can be expressed as a function of the source correlation and the distortion at Receiver 1.

  20. Reliable and Efficient Broadcasting in Asymmetric Mobile Ad Hoc Networks Using Minimized Forward Node List Algorithm

    Directory of Open Access Journals (Sweden)

    Marimuthu Murugesan

    2011-01-01

    Full Text Available Problem statement: Network wide broadcasting is a fundamental operation in ad hoc networks. In broadcasting, a source node sends a message to all the other nodes in the network. Unlike in a wired network, a packet transmitted by a node in ad hoc wireless network can reach all neighbors. Therefore, the total number of transmissions (Forwarding nodes used as the cost criterion for broadcasting. Approach: This study proposes a reliable and efficient broadcasting algorithm using minimized forward node list algorithm which uses 2-hop neighborhood information more effectively to reduce redundant transmissions in asymmetric Mobile Ad hoc networks that guarantees full delivery. Among the 1-hop neighbors of the sender, only selected forwarding nodes retransmit the broadcast message. Forwarding nodes are selected such a way that to cover the uncovered 2-hop neighbors. Results: Simulation results show that the proposed broadcasting algorithm provides high delivery ratio, low broadcast forward ratio, low overhead and minimized delay. Conclusion: In this study, reliable and efficient broadcasting algorithm in asymmetric Mobile Ad Hoc Networks using minimized forward node list algorithm has been proposed which provides low forward ratio, high delivery ratio while suppressing broadcast redundancy.

  1. Unified broadcast in sensor networks

    DEFF Research Database (Denmark)

    Hansen, Morten Tranberg; Jurdak, Raja; Kusy, Branislav

    2011-01-01

    Complex sensor network applications include multiple services such as collection, dissemination, time synchronization, and failure detection protocols. Many of these protocols require local state maintenance through periodic broadcasts which leads to high control overhead. Recent attempts...

  2. Targeted Therapy Database (TTD: a model to match patient's molecular profile with current knowledge on cancer biology.

    Directory of Open Access Journals (Sweden)

    Simone Mocellin

    Full Text Available BACKGROUND: The efficacy of current anticancer treatments is far from satisfactory and many patients still die of their disease. A general agreement exists on the urgency of developing molecularly targeted therapies, although their implementation in the clinical setting is in its infancy. In fact, despite the wealth of preclinical studies addressing these issues, the difficulty of testing each targeted therapy hypothesis in the clinical arena represents an intrinsic obstacle. As a consequence, we are witnessing a paradoxical situation where most hypotheses about the molecular and cellular biology of cancer remain clinically untested and therefore do not translate into a therapeutic benefit for patients. OBJECTIVE: To present a computational method aimed to comprehensively exploit the scientific knowledge in order to foster the development of personalized cancer treatment by matching the patient's molecular profile with the available evidence on targeted therapy. METHODS: To this aim we focused on melanoma, an increasingly diagnosed malignancy for which the need for novel therapeutic approaches is paradigmatic since no effective treatment is available in the advanced setting. Relevant data were manually extracted from peer-reviewed full-text original articles describing any type of anti-melanoma targeted therapy tested in any type of experimental or clinical model. To this purpose, Medline, Embase, Cancerlit and the Cochrane databases were searched. RESULTS AND CONCLUSIONS: We created a manually annotated database (Targeted Therapy Database, TTD where the relevant data are gathered in a formal representation that can be computationally analyzed. Dedicated algorithms were set up for the identification of the prevalent therapeutic hypotheses based on the available evidence and for ranking treatments based on the molecular profile of individual patients. In this essay we describe the principles and computational algorithms of an original method

  3. Targeted Therapy Database (TTD): A Model to Match Patient's Molecular Profile with Current Knowledge on Cancer Biology

    Science.gov (United States)

    Mocellin, Simone; Shrager, Jeff; Scolyer, Richard; Pasquali, Sandro; Verdi, Daunia; Marincola, Francesco M.; Briarava, Marta; Gobbel, Randy; Rossi, Carlo; Nitti, Donato

    2010-01-01

    Background The efficacy of current anticancer treatments is far from satisfactory and many patients still die of their disease. A general agreement exists on the urgency of developing molecularly targeted therapies, although their implementation in the clinical setting is in its infancy. In fact, despite the wealth of preclinical studies addressing these issues, the difficulty of testing each targeted therapy hypothesis in the clinical arena represents an intrinsic obstacle. As a consequence, we are witnessing a paradoxical situation where most hypotheses about the molecular and cellular biology of cancer remain clinically untested and therefore do not translate into a therapeutic benefit for patients. Objective To present a computational method aimed to comprehensively exploit the scientific knowledge in order to foster the development of personalized cancer treatment by matching the patient's molecular profile with the available evidence on targeted therapy. Methods To this aim we focused on melanoma, an increasingly diagnosed malignancy for which the need for novel therapeutic approaches is paradigmatic since no effective treatment is available in the advanced setting. Relevant data were manually extracted from peer-reviewed full-text original articles describing any type of anti-melanoma targeted therapy tested in any type of experimental or clinical model. To this purpose, Medline, Embase, Cancerlit and the Cochrane databases were searched. Results and Conclusions We created a manually annotated database (Targeted Therapy Database, TTD) where the relevant data are gathered in a formal representation that can be computationally analyzed. Dedicated algorithms were set up for the identification of the prevalent therapeutic hypotheses based on the available evidence and for ranking treatments based on the molecular profile of individual patients. In this essay we describe the principles and computational algorithms of an original method developed to fully exploit

  4. Seamless generation and provisioning of broadcasting and independent services in WDMPON access networks.

    Science.gov (United States)

    Tang, Ming; Fu, Songnian; Shum, Perry Ping

    2009-06-08

    A novel broadcasting scheme for WDM-PON based fiber access networks is proposed in this paper and downstream system experiments has been demonstrated. The broadcasting data is generated via subcarrier modulation technique. By using a delayed interferometer, the un-modulated continuous-wave carrier is separated and acts as the seeder for FP-LD injection locking and direct modulation, which is compatible with current WDM-PON infrastructures. In experiments, 2.5 Gb/s broadcasting data and 2.5 Gb/s point-to-point data are successfully integrated and transmitted in a typical WDM-PON structure with good performance.

  5. Broadcast and Aggregation in BBC

    DEFF Research Database (Denmark)

    Hüttel, Hans; Kiilerich Pratas, Nuno

    2015-01-01

    In this paper we introduce a process calculus BBC that has both forms of communication. For both many-to-one and one-to-many communication, it is often a natural assumption that communication is bounded; this reflects two distinct aspects of the limitations of a medium. In the case of broadcast......, the bound limits the number of possible recipients of a message. In the case of collection, the bound limits the number of messages that can be received. For this reason, BBC uses a notion of bounded broadcast and collection. Moreover, the syntax of the calculus introduces an explicit notion of connectivity...

  6. Broadcasting Stations of the World; Part II. Amplitude Modulation Broadcasting Stations According to Frequency.

    Science.gov (United States)

    Foreign Broadcast Information Service, Washington, DC.

    This second part of "Broadcasting Stations of the World", which lists all reported radio broadcasting and television stations with the exception of those in the United States which broadcast on domestic channels, covers amplitude modulation broadcasting stations according to frequency in ascending order. Information included covers call letters,…

  7. Broadcasting Stations of the World; Part I. Amplitude Modulation Broadcasting Stations According to Country and City.

    Science.gov (United States)

    Foreign Broadcast Information Service, Washington, DC.

    This first part of "Broadcasting Stations of the World", which lists all reported radio broadcasting and television stations, with the exception of those in the United States which broadcast on domestic channels, covers amplitude modulation broadcasting stations. Information is indexed alphabetically by country and city. Within a city, stations…

  8. Broadcasting Stations of the World; Part III. Frequency Modulation Broadcasting Stations.

    Science.gov (United States)

    Foreign Broadcast Information Service, Washington, DC.

    This third part of "Broadcasting Stations of the World", which lists all reported radio broadcasting and television stations, with the exception of those in the United States which broadcast on domestic channels, covers frequency modulation broadcasting stations. It contains two sections: one indexed alphabetically by country and city, and the…

  9. Construction on the Broadcasting of Cultural Value

    Institute of Scientific and Technical Information of China (English)

    Ai Xu

    2011-01-01

    Broadcast host responsible transmission of information, expression of emotion and preserving culture. Construction of broadcasting cultural value will raise the cultural character of the electronic medium itself, provide spiritual power of the people's needs, enhancing the cultural influence of broadcasting on audiences.

  10. Southeast Asian Broadcasting: The Emergence of Thailand.

    Science.gov (United States)

    Anatol, Karl W.; Bittner, John R.

    The historical development and evolution of broadcasting in Thailand, from its beginning in 1919, is narrated. Governmental control of broadcasting is discussed briefly, and the development of Southeast Asia's first television station, Thai Television Channel 4, is also surveyed. Today, radio broadcasting in Thailand utilizes A.M., F.M., and F.M.…

  11. 47 CFR 73.14 - AM broadcast definitions.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false AM broadcast definitions. 73.14 Section 73.14 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES AM Broadcast Stations § 73.14 AM broadcast definitions. AM broadcast band. The band of frequencies extending...

  12. 47 CFR 73.128 - AM stereophonic broadcasting.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false AM stereophonic broadcasting. 73.128 Section 73.128 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES AM Broadcast Stations § 73.128 AM stereophonic broadcasting. (a) An Am broadcast...

  13. Survey on Broadcasting in VANETs

    Directory of Open Access Journals (Sweden)

    Shereen A.M. Ahmed

    2014-05-01

    Full Text Available This study aims to evaluate, categorize and compare the Vehicular Ad-hoc Network (VANET broadcasting protocols. Massive amount of VANET broadcasting protocols have been proposed in the literature. Aiming efficiency, reliability, scalability and reach-ability each of them adopts certain techniques to provide a certain level of functionality. This study distinguishes the VANET routing protocols in several categorizes according to the applications it may serve. By focusing into broadcasting protocols, the study further divides the reviewed algorithms according to the techniques they used to initiate the communication, which would be either through beaconing, handshaking, or instant broadcasting. These protocols are further classified according to the criteria that have been used to select the next forwarder. The criteria usually influenced by the targeted performance of the technique. Such criteria may include furthest node from the sender, the node with the best link quality, endanger nodes, nodes with high probability of forwarding and backbone nodes. Performance metrics that are used for quantitative evaluation are suggested.

  14. Lossless Compression of Broadcast Video

    DEFF Research Database (Denmark)

    Martins, Bo; Eriksen, N.; Faber, E.

    1998-01-01

    We investigate several techniques for lossless and near-lossless compression of broadcast video.The emphasis is placed on the emerging international standard for compression of continous-tone still images, JPEG-LS, due to its excellent compression performance and moderatecomplexity. Except for one...

  15. Energy-Efficient Broadcasting Scheme for Smart Industrial Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Zhuangbin Chen

    2017-01-01

    Full Text Available In smart Industrial Wireless Sensor Networks (IWSNs, sensor nodes usually adopt a programmable technology. These smart devices can obtain new or special functions by reprogramming: they upgrade their soft systems through receiving new version of program codes. If sensor nodes need to be upgraded, the sink node will propagate program code packets to them through “one-to-many” broadcasting, and therefore new capabilities can be obtained, forming the so-called Software Defined Network (SDN. However, due to the high volume of code packet, the constraint energy of sensor node, and the unreliable link quality of wireless network, rapidly broadcasting the code packets to all nodes in network can be a challenge issue. In this paper, a novel Energy-efficient Broadcast scheme with adjustable broadcasting radius is proposed aiming to improve the performance of network upgrade. In our scheme, the nonhotspots sensor nodes take full advantage of their residual energy caused in data collection period to improve the packet reception probability and reduce the broadcasting delay of code packet transmission by enlarging the broadcasting radius, that is, the transmitting power. The theoretical analyses and experimental results show that, compared with previous work, our approach can averagely reduce the Network Upgrade Delay (NUD by 14.8%–45.2% and simultaneously increase the reliability without harming the lifetime of network.

  16. Advanced Broadcast/Multicast Channel Capable Carrier Reuse WDM-PON

    Directory of Open Access Journals (Sweden)

    Ashish Nema

    2013-02-01

    Full Text Available Advanced broadcast/multicast carriers reuse WDM-PON is mainly used to provide the broadcast and unicast signal at the destination end. It uses the splitting capability of a power splitter and the cyclic property of arrayed waveguide grating at the middle remote node. The broadcast channel with the help of AWG and with a dedicated unicast channel can be overlaid and subsequently transmitted to each Optical network unit (ONU simultaneously. Another advantage of this WDM-PON a very small interface between the broadcast channel and with the unicast channel and it is shared by all ONU. The optical carrier to subcarrier ratio on the bit error rate performance can be minimized by increasing the extinction ratio of the delay interferometer used at remote node. The result is implemented by opti-system 7.0 software tools

  17. Digital audio and video broadcasting by satellite

    Science.gov (United States)

    Yoshino, Takehiko

    In parallel with the progress of the practical use of satellite broadcasting and Hi-Vision or high-definition television technologies, research activities are also in progress to replace the conventional analog broadcasting services with a digital version. What we call 'digitalization' is not a mere technical matter but an important subject which will help promote multichannel or multimedia applications and, accordingly, can change the old concept of mass media, such as television or radio. NHK Science and Technical Research Laboratories has promoted studies of digital bandwidth compression, transmission, and application techniques. The following topics are covered: the trend of digital broadcasting; features of Integrated Services Digital Broadcasting (ISDB); compression encoding and transmission; transmission bit rate in 12 GHz band; number of digital TV transmission channels; multichannel pulse code modulation (PCM) audio broadcasting system via communication satellite; digital Hi-Vision broadcasting; and development of digital audio broadcasting (DAB) for mobile reception in Japan.

  18. Direct Broadcast Satellite: Radio Program

    Science.gov (United States)

    Hollansworth, James E.

    1992-01-01

    NASA is committed to providing technology development that leads to the introduction of new commercial applications for communications satellites. The Direct Broadcast Satellite-Radio (DBS-R) Program is a joint effort between The National Aeronautics and Space Administration (NASA) and The United States Information Agency/Voice of America (USIA/VOA) directed at this objective. The purpose of this program is to define the service and develop the technology for a direct-to-listener satellite sound broadcasting system. The DBS-R Program, as structured by NASA and VOA, is now a three-phase program designed to help the U.S. commercial communications satellite and receiver industry bring about this new communications service. Major efforts are being directed towards frequency planning hardware and service development, service demonstration, and experimentation with new satellite and receiver technology.

  19. 75 FR 81190 - Television Broadcasting Services; Vernal and Santaquin, UT, and Ely and Caliente, NV

    Science.gov (United States)

    2010-12-27

    ... COMMISSION 47 CFR Part 73 Television Broadcasting Services; Vernal and Santaquin, UT, and Ely and Caliente.... The Commission was required by the DTV Delay Act to ] terminate all licenses for full-power television... Commission no longer has the authority to act on rulemaking proposals in the full-power analog...

  20. USING RADIO NEWS BROADCASTS AS LISTENING MATERIAL

    Institute of Scientific and Technical Information of China (English)

    1994-01-01

    INTRODUCTION As English teachers, we have devoted a lot of time to the teaching of listening comprehension using radio broadcasts. We began by using VOA news in special English with freshmen and a mixture of news in special English and standard news broadcasts with sophomores. Later BBC news was used. We accumulated a considerable amount of experience and did some research into the design of listening comprehension exercises. This article discusses how listening ability may be improved by using such broadcasts.

  1. A father protocol for quantum broadcast channels

    CERN Document Server

    Dupuis, F; Dupuis, Fr\\'ed\\'eric; Hayden, Patrick

    2006-01-01

    We present a new protocol for quantum broadcast channels based on the fully quantum Slepian-Wolf protocol. The protocol yields an achievable rate region for entanglement-assisted transmission of quantum information through a quantum broadcast channel that can be considered the quantum analogue of Marton's region for classical broadcast channels. The protocol can be adapted to yield achievable rate regions for unassisted quantum communication and for entanglement-assisted classical communication. Regularized versions of all three rate regions are provably optimal.

  2. 47 CFR 73.1250 - Broadcasting emergency information.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Broadcasting emergency information. 73.1250... RADIO BROADCAST SERVICES Rules Applicable to All Broadcast Stations § 73.1250 Broadcasting emergency information. (a) Emergency situations in which the broadcasting of information is considered as furthering...

  3. 37 CFR 381.2 - Definition of public broadcasting entity.

    Science.gov (United States)

    2010-07-01

    ... broadcasting entity. 381.2 Section 381.2 Patents, Trademarks, and Copyrights COPYRIGHT ROYALTY BOARD, LIBRARY... WITH NONCOMMERCIAL EDUCATIONAL BROADCASTING § 381.2 Definition of public broadcasting entity. As used in this part, the term public broadcasting entity means a noncommercial educational broadcast...

  4. 47 CFR 73.403 - Digital audio broadcasting service requirements.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Digital audio broadcasting service requirements. 73.403 Section 73.403 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES Digital Audio Broadcasting § 73.403 Digital audio broadcasting...

  5. 47 CFR 73.297 - FM stereophonic sound broadcasting.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false FM stereophonic sound broadcasting. 73.297... RADIO BROADCAST SERVICES FM Broadcast Stations § 73.297 FM stereophonic sound broadcasting. (a) An FM... broadcasting, equipment performance measurements must be made to ensure that the transmitted signal...

  6. Robust Broadcast-Communication Control of Electric Vehicle Charging

    CERN Document Server

    Turitsyn, Konstantin; Backhaus, Scott; Chertkov, Misha

    2010-01-01

    The anticipated increase in the number of plug-in electric vehicles (EV) will put additional strain on electrical distribution circuits. Many control schemes have been proposed to control EV charging. Here, we develop control algorithms based on randomized EV charging start times and simple one-way broadcast communication allowing for a time delay between communication events. Using arguments from queuing theory and statistical analysis, we seek to maximize the utilization of excess distribution circuit capacity while keeping the probability of a circuit overload negligible.

  7. Robust broadcast-communication control of electric vehicle charging

    Energy Technology Data Exchange (ETDEWEB)

    Chertkov, Michael [Los Alamos National Laboratory; Turitsyn, Konstantin [Los Alamos National Laboratory; Sulc, Petr [Los Alamos National Laboratory; Backhaus, Scott [Los Alamos National Laboratory

    2010-01-01

    The anticipated increase in the number of plug-in electric vehicles (EV) will put additional strain on electrical distribution circuits. Many control schemes have been proposed to control EV charging. Here, we develop control algorithms based on randomized EV charging start times and simple one-way broadcast communication allowing for a time delay between communication events. Using arguments from queuing theory and statistical analysis, we seek to maximize the utilization of excess distribution circuit capacity while keeping the probability of a circuit overload negligible.

  8. Secrecy in Cooperative Relay Broadcast Channels

    CERN Document Server

    Ekrem, E

    2008-01-01

    We investigate the effects of user cooperation on the secrecy of broadcast channels by considering a cooperative relay broadcast channel. We show that user cooperation can increase the achievable secrecy region. We propose an achievable scheme that combines Marton's coding scheme for broadcast channels and Cover and El Gamal's compress-and-forward scheme for relay channels. We derive outer bounds for the rate-equivocation region using auxiliary random variables for single-letterization. Finally, we consider a Gaussian channel and show that both users can have positive secrecy rates, which is not possible for scalar Gaussian broadcast channels without cooperation.

  9. 76 FR 55817 - Broadcast Applications and Proceedings; Fairness Doctrine and Digital Broadcast Television...

    Science.gov (United States)

    2011-09-09

    ... COMMISSION 47 CFR Parts 1, 73 and 76 Broadcast Applications and Proceedings; Fairness Doctrine and Digital Broadcast Television Redistribution Control; Fairness Doctrine, Personal Attacks, Political Editorials and... legal effect and are obsolete. The deleted rules include ] the fairness doctrine, broadcast flag rules...

  10. Broadcasting: Does It Belong in the Department of Speech? Traditional Concepts in Speech and Broadcasting.

    Science.gov (United States)

    Greene, Robert J.

    Educational institutions were among the pioneers in the development of radio broadcasting. By 1938, over 300 colleges reported offering at least one course in radio. In more recent times the surveys compiled by Harold Niven for the "Journal of Broadcasting" show a continued interest in broadcasting courses. The trend is toward Communications or…

  11. 47 CFR 73.1692 - Broadcast station construction near or installation on an AM broadcast tower.

    Science.gov (United States)

    2010-10-01

    ... AM station to return to the direct method of power determination. (d) Tower erections or... installation on an AM broadcast tower. 73.1692 Section 73.1692 Telecommunication FEDERAL COMMUNICATIONS... Stations § 73.1692 Broadcast station construction near or installation on an AM broadcast tower. Where...

  12. Cable Television and Satellite Broadcasting

    Science.gov (United States)

    Blackburn, J. F.

    1990-05-01

    Sponsored by the Financial Times, this 2-day conference was the eighth in the annual series. This particular conference marks the end of the first year of the Sky Television network's operation in the U.K. The conference was held just before British Satellite Broadcasting (BSB) goes into operation. With speakers from the U.K., the U.S., France, Japan, and the Netherlands, attendance exceeded all previous conferences. The 400 participants came mainly from the U.K., but also represented were France, the Netherlands, U.S., Australia, Spain, Norway, Canada, Switzerland, Denmark, Federal Republic of Germany (FRG), Finland, Monaco, Belgium, South Africa, Italy, Luxembourg, Irish Republic, and Malta.

  13. Watershed Education for Broadcast Meteorologists

    Science.gov (United States)

    Lamos, J. P.; Sliter, D.; Espinoza, S.; Spangler, T. C.

    2006-12-01

    The National Environmental Education and Training Organization (NEETF) published a report in 2005 that summarized the findings of ten years of NEETF and Roper Research. The report stated, "Our years of data from Roper surveys show a persistent pattern of environmental ignorance even among the most educated and influential members of society." Market research has also shown that 80% of television viewers list the weather as the primary reason for watching the local news. Broadcast meteorologists, with a broader understanding of environmental and related sciences have an opportunity to use their weathercasts to inform the public about the environment and the factors that influence environmental health. As "station scientists," broadcast meteorologists can use the weather, and people's connection to it, to broaden their understanding of the environment they live in. Weather and watershed conditions associated with flooding and drought have major human and environmental impacts. Increasing the awareness of the general public about basic aspects of the hydrologic landscape can be an important part of mitigating the adverse effects of too much or too little precipitation, and of protecting the environment as well. The concept of a watershed as a person's natural neighborhood is a very important one for understanding hydrologic and environmental issues. Everyone lives in a watershed, and the health of a watershed is the result of the interplay between weather and human activity. This paper describes an online course to give broadcast meteorologists a basic understanding of watersheds and how watersheds are impacted by weather. It discusses how to convey watershed science to a media- savvy audience as well as how to model the communication of watershed and hydrologic concepts to the public. The course uses a narrative, story-like style to present its content. It is organized into six short units of instruction, each approximately 20 minutes in duration. Each unit is

  14. Surgical education through video broadcasting.

    Science.gov (United States)

    Nagengast, Eric S; Ramos, Margarita S; Sarma, Hiteswar; Deshpande, Gaurav; Hatcher, Kristin; Magee, William P; Campbell, Alex

    2014-09-01

    Surgical training is facing new obstacles. As advancements in medicine are made, surgeons are expected to know more and to be able to perform more procedures. In the western world, increasing restrictions on residency work hours are adding a new hurdle to surgical training. In low-resource settings, a low attending-to-resident ratio results in limited operative experience for residents. Advances in telemedicine may offer new methods for surgical training. In this article, the authors share their unique experience using live video broadcasting of surgery for educational purposes at a comprehensive cleft care center in Guwahati, India.

  15. Equilibrium in a random viewer model of television broadcasting

    DEFF Research Database (Denmark)

    Hansen, Bodil Olai; Keiding, Hans

    2014-01-01

    The authors considered a model of commercial television market with advertising with probabilistic viewer choice of channel, where private broadcasters may coexist with a public television broadcaster. The broadcasters influence the probability of getting viewer attention through the amount...

  16. 78 FR 42700 - Radio Broadcasting Services; Matagorda, Texas

    Science.gov (United States)

    2013-07-17

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Matagorda, Texas AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The Audio Division, at the request of Tejas Broadcasting Ltd., LLP... broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant Chief, Audio Division, Media...

  17. 76 FR 76337 - Television Broadcasting Services; Lincoln, NE

    Science.gov (United States)

    2011-12-07

    ... COMMISSION 47 CFR Part 73 Television Broadcasting Services; Lincoln, NE AGENCY: Federal Communications... Lincoln Broadcasting, LLC (``LBL''), the licensee of KFXL-TV, channel 51, Lincoln, Nebraska, requesting... 73 Television, Television broadcasting. Federal Communications Commission Barbara A. Kreisman,...

  18. Live broadcast from the Globe

    CERN Multimedia

    La tête au carréTuesday, 17 June 2008 between 2.00 and 3.00 p.m.“La tête au carré”, a France Inter radio programme devoted to science, will set up its sound booth at CERN for a special broadcast on the LHC.The journalist Mathieu Vidard will interview the following guests: - Pierre Van Hove, an experimental physicist working on CMS. He is a CNRS research scientist from the Institut Hubert Curien in Strasbourg, France.- Abdelhak Djouadi is a theoretical physicist. He is a research director at the CNRS’s Laboratoire de physique théorique at Orsay, France and holder of the CNRS silver medal.- Magali Gruwe, one of the engineers in charge of LHC operations at CERN.» To take part in this live broadcast, which is open to the public, come to the Globe at 1:30 p.m. The number of places is limited.» No specialist knowledge required.» See the programme's homepage

  19. Television broadcast from space systems: Technology, costs

    Science.gov (United States)

    Cuccia, C. L.

    1981-01-01

    Broadcast satellite systems are described. The technologies which are unique to both high power broadcast satellites and small TV receive-only earth terminals are also described. A cost assessment of both space and earth segments is included and appendices present both a computer model for satellite cost and the pertinent reported experience with the Japanese BSE.

  20. The Production and Teaching of Broadcast News.

    Science.gov (United States)

    Wiley, Gale F.

    1987-01-01

    Presents description of local-area network of personal computers installed in the Broadcast News Laboratory at the University of Texas at Austin to help produce and teach broadcast news. Highlights include development and design of the system, software and hardware considerations, and the use of tutorials for writing and technical concepts. (LRW)

  1. Statistical Trends in Broadcasting. Ninth Edition.

    Science.gov (United States)

    Blair (John) and Co., New York, NY.

    A review of trends in broadcasting and an overall economic profile of the broadcasting industry for 1972, with projections for 1973, are given by a collection of tables and graphs. The first portion presents data on total advertising expenditures and trends, along with information on the gross national product and personal consumption spending.…

  2. Language Choice in Transnational Radio Broadcasting.

    Science.gov (United States)

    Wood, Richard E.

    1979-01-01

    Discusses the comparative strength of language use as measured by languages used in transnational radio broadcasting. Findings indicate that politics and Christian evangelism are the two major concerns dominating broadcasting and that language selection policy influences political, social, and cultural change. (JMF)

  3. Management Theories and Broadcasting: A Handbook.

    Science.gov (United States)

    Craig, J. Robert; Hindmarsh, Wayne A.

    Today's contemporary management and motivation theories, as applied to the business of broadcasting, are the focus of the first section of this paper. It deals with the kinds and reactions of employees in broadcasting stations in relation to 11 motivational theories: (1) Theories X and Y, (2) Immaturity-Maturity Theory, (3) V Theory, (4) Z Theory,…

  4. The Quasi Nongovernmental Organization in Public Broadcasting

    Science.gov (United States)

    Grossman, Michael B.

    1969-01-01

    "Educational broadcasting faces a problem of remaining autonomous under increased governmental support through the Corporation for Public Broadcasting. Dr. Grossman draws parallels between what is happening in ETV and the history of autonomy and constituency in the schools and universities. (Editor)

  5. 47 CFR 73.1217 - Broadcast hoaxes.

    Science.gov (United States)

    2010-10-01

    ... broadcast station shall broadcast false information concerning a crime or a catastrophe if: (a) The licensee... harm would occur. A “crime” is any act or omission that makes the offender subject to criminal punishment by law. A “catastrophe” is a disaster or imminent disaster involving violent or sudden...

  6. High-Performance Broadcasting Algorithms on Cluster

    Institute of Scientific and Technical Information of China (English)

    舒继武; 魏英霞; 王鼎兴

    2004-01-01

    In many clusters connected by high-speed communication networks, the exact structure of the underlying communication network and the latency difference between different sending and receiving pairs may be ignored when they broadcast, such as in the approach adopted by the broadcasting method in MPICH,a widely used MPI implementation. However, the underlying network cluster topologies are becoming more and more complicated and the performance of traditional broadcasting algorithms, such as MPICH's MPI_Bcast, is far from good. This paper analyzed the impact of communication latencies and the underlying topologies on the performance of broadcasting algorithms for multilevel clusters. A multilevel model was developed for broadcasting in clusters with complicated topologies, which divides the cluster topology into many levels based on the underlying topology. The multilevel model was used to develop a new broadcast algorithm,MLM broadcast-2 (MLMB-2), that adapts to a wide range of clusters. Comparison of the performance of the counterpart MPI operation MPI_Bcast and MLMB-2 shows that MLMB-2 outperforms MPl_Bcast by decreasing the broadcast running time by 60%-90%.

  7. The Olympic Games broadcasted as Interactive Television - New Media new Games?

    DEFF Research Database (Denmark)

    Bjørner, Thomas

    could change how the viewers watch the Olympic Games. New media initiatives will increase significantly, not only in the broadcast of television but also with broadband Internet coverage of the Olympic Games. In addition, mobile phone subscribers in some territories already have been able to watch live...... or delayed video coverage of the Olympic Games. The Torino Olympic Broadcasting was the first to be filmed entirely in High Definition Television. In the future the use of digital video processing, computer vision, 3D-visualisation and animation techniques allow viewers to watch sports events almost...

  8. Metadata for the description of broadcast assets

    DEFF Research Database (Denmark)

    Efthimiadis, Efthimis N.; Mai, Jens Erik; Burrows, Paul E.

    2003-01-01

    The Corporation for Public Broadcasting (CPB) and public broadcasters consider Media Asset Management (MAM) of critical importance since without a concerted and cooperative plan to manage their vast library of content, broadcasters are unable to reach their potential for service in the digital age....... The concerns for Media Asset Management, human and technical, are myriad. Media Asset Management is the framework upon which many of the largest technology projects will be built, including the future interconnection system between and among CPB member stations. It is CPB's hope that its licensees...... and their partners in university, museum, and library communities, will work together to contribute to Media Asset Management solutions. These issues are not unique to Public Broadcasters. Similar issues are faced by all networks at different levels of complexity. This panel will present efforts by broadcasters...

  9. Safety message broadcast in vehicular networks

    CERN Document Server

    Bi, Yuanguo; Zhuang, Weihua; Zhao, Hai

    2017-01-01

    This book presents the current research on safety message dissemination in vehicular networks, covering medium access control and relay selection for multi-hop safety message broadcast. Along with an overall overview of the architecture, characteristics, and applications of vehicular networks, the authors discuss the challenging issues in the research on performance improvement for safety applications, and provide a comprehensive review of the research literature. A cross layer broadcast protocol is included to support efficient safety message broadcast by jointly considering geographical location, physical-layer channel condition, and moving velocity of vehicles in the highway scenario. To further support multi-hop safety message broadcast in a complex road layout, the authors propose an urban multi-hop broadcast protocol that utilizes a novel forwarding node selection scheme. Additionally, a busy tone based medium access control scheme is designed to provide strict priority to safety applications in vehicle...

  10. Broadcast Network Coverage with Multicell Cooperation

    Directory of Open Access Journals (Sweden)

    Hongxiang Li

    2010-01-01

    Full Text Available Multicell cooperation has been identified as one of the underlying principles for future wireless communication systems. This paper studies the benefits of multicell cooperation in broadcast TV network from an information theoretical perspective. We define outage capacity as the figure of merit and derive the broadcast coverage area to evaluate such system. Specifically, we calculate the broadcast coverage area with given common information rate and outage probabilities when multiple base stations collaboratively transmit the broadcast signals. For the general MIMO case where receivers have multiple antennas, we provide simulation results to illustrate the expanded coverage area. In all cases, our results show that the coverage of a TV broadcast network can be significantly improved by multicell cooperation.

  11. Independence between Korean Government and Broadcasting Industry

    Directory of Open Access Journals (Sweden)

    Yi-Chih Huang

    2015-01-01

    Full Text Available The recent success of Hallyu (Korean Wave first driven by the spread of TV dramas received academic attention for its effective national policies. However, little is known about how national policy is implemented and local industry capacity is maintained even after market opening. Therefore, the aim of this paper attempts to explore how and why state governs broadcasting industry effectively. Historical institutionalism has been used to explain the way that Korean governments had taken to collaborate with the broadcasting industry. The relation between governments and broadcasting industry, the changes of broadcasting policies and authorities responsible for regulating TV industry are involved. Results of this study showed that strong state intervention in Korea did lead to oligopoly, and the governments dominated the industry by designing the market structure. To conclude, this study may be of importance in explaining the governed independence between Korean governments and broadcasting industry, as well as how it contributed to the stable productivity and export competitiveness.

  12. Random broadcast on random geometric graphs

    Energy Technology Data Exchange (ETDEWEB)

    Bradonjic, Milan [Los Alamos National Laboratory; Elsasser, Robert [UNIV OF PADERBORN; Friedrich, Tobias [ICSI/BERKELEY; Sauerwald, Tomas [ICSI/BERKELEY

    2009-01-01

    In this work, we consider the random broadcast time on random geometric graphs (RGGs). The classic random broadcast model, also known as push algorithm, is defined as: starting with one informed node, in each succeeding round every informed node chooses one of its neighbors uniformly at random and informs it. We consider the random broadcast time on RGGs, when with high probability: (i) RGG is connected, (ii) when there exists the giant component in RGG. We show that the random broadcast time is bounded by {Omicron}({radical} n + diam(component)), where diam(component) is a diameter of the entire graph, or the giant component, for the regimes (i), or (ii), respectively. In other words, for both regimes, we derive the broadcast time to be {Theta}(diam(G)), which is asymptotically optimal.

  13. Now Broadcasting in Planck Definition

    Energy Technology Data Exchange (ETDEWEB)

    Hogan, Craig [Fermilab

    2013-07-08

    If reality has finite information content, space has finite fidelity. The quantum wave function that encodes spatial relationships may be limited to information that can be transmitted in a "Planck broadcast", with a bandwidth given by the inverse of the Planck time, about $2\\times 10^{43}$ bits per second. Such a quantum system can resemble classical space-time on large scales, but locality emerges only gradually and imperfectly. Massive bodies are never perfectly at rest, but very slightly and slowly fluctuate in transverse position, with a spectrum of variation given by the Planck time. This distinctive new kind of noise associated with quantum geometry would not have been noticed up to now, but may be detectable in a new kind of experiment.

  14. Dynamic Broadcast Scheduling in DDBMS

    Directory of Open Access Journals (Sweden)

    Babu Santhalingam,

    2011-01-01

    Full Text Available This system will address the problem of online scheduling sequential data objects with the principle of periodicity in the context of dynamic information dissemination. Many modern information applications spread dynamically generated data objects and answer the complex query for retrieving multiple data objects. In dynamic environments, data streams need to be online processed rather than being stored and later retrieved to answer queries. Particularly, data objects are produced dynamically by the information providers, interleaved and disseminated efficiently by the broadcasting servers, and associated sequentially in the client sides. The proposed algorithm with a well-specific gain measure function prominently outperforms the FIFO schedule and is able to minimize the mean service access time to the extent close to the theoretical optimum.

  15. Broadcast satellite service: The international dimension

    Science.gov (United States)

    Samara, Noah

    1991-09-01

    The dawn of the 1990's has witnessed the birth of a new satellite service - satellite sound broadcasting. This new service is characterized by digital transmission at data rates up to 256 kb/s from satellites in geostationary orbit to small, low-cost, mobile and portable receivers. The satellite sound broadcasting service is a logical step beyond navigation satellite service, such as that provided by the GPS Navstar system. The mass market appeal of satellite sound broadcasting in the area of lightsat technology and low-cost digital radios has greatly facilitated the financing of this type of space service.

  16. Classical codes for quantum broadcast channels

    CERN Document Server

    Savov, Ivan

    2011-01-01

    We discuss two techniques for transmitting classical information over quantum broadcast channels. The first technique is a quantum generalization of the superposition coding scheme for the classical broadcast channel. We use a quantum simultaneous nonunique decoder and obtain a simpler proof of the rate region recently published by Yard et al. in independent work. Our second result is a quantum Marton coding scheme, which gives the best known achievable rate region for quantum broadcast channels. Both results exploit recent advances in quantum simultaneous decoding developed in the context of quantum interference channels.

  17. Emergency Broadcast System Based On GIS

    Science.gov (United States)

    Junfeng, Kang; Baoyu, Wang; Xueying, Jiang; Xiaosheng, Liu

    2017-02-01

    Nowadays, disaster occurs more and more frequently, which brings huge losses to the society. Presented a GIS based emergency broadcast system (GIS-EBS), to provide rapid, accurate information to the public, can reduce the people’s losses maximum. Different from the traditional radio data system (RDS), by adding broadcasting terminal control instruction on the FM signal, GIS-EBS extended the RDS protocol, which can control each radio terminal’s state. And through the extended RDS protocol, GIS-EBS can broadcast and release the emergency information to the right place and the people most in need in the shortest time.

  18. 37 CFR 253.2 - Definition of public broadcasting entity.

    Science.gov (United States)

    2010-07-01

    ... broadcasting entity. 253.2 Section 253.2 Patents, Trademarks, and Copyrights COPYRIGHT OFFICE, LIBRARY OF... CONNECTION WITH NONCOMMERCIAL EDUCATIONAL BROADCASTING § 253.2 Definition of public broadcasting entity. As used in this part, the term public broadcasting entity means a noncommercial educational...

  19. 78 FR 78318 - Television Broadcasting Services; Oklahoma City, Oklahoma

    Science.gov (United States)

    2013-12-26

    ... COMMISSION 47 CFR Part 73 Television Broadcasting Services; Oklahoma City, Oklahoma AGENCY: Federal... filed by Family Broadcasting Group, Inc. (``Family Broadcasting''), the licensee of station KSBI(TV... voluntary relocation agreement with Lower 700 MHz A Block licensees. Family Broadcasting has entered...

  20. 75 FR 9859 - Television Broadcasting Services; Beaumont, TX

    Science.gov (United States)

    2010-03-04

    ... COMMISSION 47 CFR Part 73 Television Broadcasting Services; Beaumont, TX AGENCY: Federal Communications... Freedom Broadcasting of Texas (``Freedom Broadcasting''), the licensee of KFDM(TV), channel 21, Beaumont, Texas. Freedom Broadcasting requests ] the substitution of channel 25 for channel 21 at Beaumont....

  1. 47 CFR 73.597 - FM stereophonic sound broadcasting.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false FM stereophonic sound broadcasting. 73.597 Section 73.597 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES... broadcasting. A noncommercial educational FM broadcast station may, without specific authority from the...

  2. Broadcast authentication for wireless sensor networks using nested hashing and the Chinese remainder theorem.

    Science.gov (United States)

    Eldefrawy, Mohamed Hamdy; Khan, Muhammad Khurram; Alghathbar, Khaled; Cho, Eun-Suk

    2010-01-01

    Secure broadcasting is an essential feature for critical operations in wireless sensor network (WSNs). However, due to the limited resources of sensor networks, verifying the authenticity for broadcasted messages is a very difficult issue. μTESLA is a broadcast authentication protocol, which uses network-wide loose time synchronization with one-way hashed keys to provide the authenticity verification. However, it suffers from several flaws considering the delay tolerance, and the chain length restriction. In this paper, we propose a protocol which provides broadcast authentication for wireless sensor networks. This protocol uses a nested hash chain of two different hash functions and the Chinese Remainder Theorem (CRT). The two different nested hash functions are employed for the seed updating and the key generation. Each sensor node is challenged independently with a common broadcasting message using the CRT. Our algorithm provides forward and non-restricted key generation, and in addition, no time synchronization is required. Furthermore, receivers can instantly authenticate packets in real time. Moreover, the comprehensive analysis shows that this scheme is efficient and practical, and can achieve better performance than the μTESLA system.

  3. Broadcast Authentication for Wireless Sensor Networks Using Nested Hashing and the Chinese Remainder Theorem

    Directory of Open Access Journals (Sweden)

    Eun-Suk Cho

    2010-09-01

    Full Text Available Secure broadcasting is an essential feature for critical operations in wireless sensor network (WSNs. However, due to the limited resources of sensor networks, verifying the authenticity for broadcasted messages is a very difficult issue. μTESLA is a broadcast authentication protocol, which uses network-wide loose time synchronization with one-way hashed keys to provide the authenticity verification. However, it suffers from several flaws considering the delay tolerance, and the chain length restriction. In this paper, we propose a protocol which provides broadcast authentication for wireless sensor networks. This protocol uses a nested hash chain of two different hash functions and the Chinese Remainder Theorem (CRT. The two different nested hash functions are employed for the seed updating and the key generation. Each sensor node is challenged independently with a common broadcasting message using the CRT. Our algorithm provides forward and non-restricted key generation, and in addition, no time synchronization is required. Furthermore, receivers can instantly authenticate packets in real time. Moreover, the comprehensive analysis shows that this scheme is efficient and practical, and can achieve better performance than the μTESLA system.

  4. Injection molded optical backplane for broadcast architecture

    Science.gov (United States)

    Rosenberg, Paul; Mathai, Sagi; Sorin, Wayne V.; McLaren, Moray; Straznicky, Joseph; Panotopoulos, Georgios; Warren, David; Morris, Terry; Tan, Michael R. T.

    2012-01-01

    A low cost, blind mate, injection molded optical backplane is presented. The optical backplane is comprised of 12 channel optical broadcast buses, operating at 10Gbps/channel with six blindmate optical output ports spaced 1U apart.

  5. On Neologism in Broadcast News Reporting

    Institute of Scientific and Technical Information of China (English)

    吕慧

    2014-01-01

    Based on the neologism in the broadcast news reporting, this paper will introduce different kinds of the most frequently used words today, including the extended meanings of the conventional words and new words created by word formation.

  6. 8 CFR 204.13 - How can the International Broadcasting Bureau of the United States Broadcasting Board of...

    Science.gov (United States)

    2010-01-01

    ... 8 Aliens and Nationality 1 2010-01-01 2010-01-01 false How can the International Broadcasting Bureau of the United States Broadcasting Board of Governors petition for a fourth preference special... Broadcasting Bureau of the United States Broadcasting Board of Governors petition for a fourth...

  7. Optimal Broadcasting of Mixed Equatorial Qubits

    Institute of Scientific and Technical Information of China (English)

    YU Zong-Wen

    2009-01-01

    We derive an optimal 2→M phase-covariant quantum broadcasting of mixed equatorial qubits.This quantum broadcasting is optimal in the sense that the shrinking factor between the input and the output single qubit achieves the upper bound.The result shows that we can copy two identical mixed equatorial qubits with the same quality as those of two identical pure equatorial states.

  8. An SP-Hill layered broadcast cryptosystem

    Science.gov (United States)

    Spencer, M. E.; Tavares, S. E.

    A new type of cryptosystem with applications in broadcast communications and database systems is described. The scheme combines various elements of both SP-networks and Hill broadcast encryption systems. The theoretical basis for the encryption technique is described in a series of equations and the results of a preliminary production process complexity test are presented. The results of the test indicate that the scheme performs well cryptographically and that it represents a significant advance over conventional encryption systems.

  9. Microcontroller Protocol for Secure Broadcast in Controller Area Networks

    Directory of Open Access Journals (Sweden)

    B.Vijayalakshmi

    2014-04-01

    Full Text Available Controller Area Network is a bus commonly used by controllers inside vehicles and in various industrial control applications. In the past controllers were assumed to operate in secure perimeters, but today these environments are well connected to the outside world and recent incidents showed them extremely vulnerable to cyber-attacks. To withstand such threats, one can implement security in the application layer of CAN. Here we design, refine and implement a broadcast authentication protocol based on the well known paradigm of using key-chains and time synchronization, a commonly used Mechanism in wireless sensor networks, which allows us to take advantage from the use of symmetric primitives without the need of secret shared keys during broadcast. But, as process control is a time critical operation we make several refinements in order to improve on the authentication delay. For this we study several trade-offs to alleviate shortcomings on computational speed, memory and bandwidth up to the point of using reduced versions of hash functions that can assure ad hoc security. To prove the efficiency of the protocol

  10. Sensitivity analysis of the main methods (ΔC*, ΦCTO, TTD) used to infer the anthropogenic carbon (Cant) along the RAPID line (26°N North Atlantic latitudinal transect) on 2010.

    Science.gov (United States)

    Tudino, T.; Messias, M. J.; Mills, B.; Schuster, U.; Watson, A. J.

    2016-02-01

    Since the beginning of the industrial revolution, human activities have represented a source for atmospheric CO2 (Cant), leading the increase of this gas from 280 to 400 ppm. Currently, the global ocean is sequestrating a quarter of this emission ( 2.2 PgC/yr), particularly in key areas, such as the North Atlantic. However, a direct Cant measurement is not possible owing to its small fraction compared to the natural background. Several methods have been, then, evolved (ΔC*, ΦCTO, TTD) to derive this variable from other carbon-related measurements (alkalinity, DIC, nutrients) or using the transient tracers (CFCs and sulphur hexafluoride (SF6)). All of these methods rely on assumptions (e.g.: oceanic steady state, constant Redfield's ratios) that introduce an uncertainty estimated as 20%. Here, a double approach based on the one at a time (OAT) and the variance-based sensitivity (VBSA) analyses has been used to assess this uncertainty and compare it among the three methods. Overall, the back-calculations (ΔC*, ΦCTO) result driven by alkalinity, DIC, temperature and oxygen with low inter parameter interactions. Their influence on the Cant distribution displays an inversion for temperature lower than 9°C, although the ΦCTO compensates this challenge using an optimum multi parameters analysis below 5°C. By contrast, the TTD approach shows constancy in the predictive parameter influence along the water column, a strong dependency on the CO2 inferred from the transit time distributions with high inter parameter interactions. To quantify the resulting variation on the Cant estimates, each predictive factor influence has been correlated with the respective analysis precision and the maximum influence determined as a percentage variation on the Cant distribution. Results display that only the DIC, alkalinity and nutrients have an influence on the back-calculations comparable with the method uncertainty, highlighting the TTD approach as the most promising in the Cant

  11. 75 FR 17874 - Digital Audio Broadcasting Systems and Their Impact on the Terrestrial Radio Broadcast Service

    Science.gov (United States)

    2010-04-08

    ... of 18 broadcasters that operate over 1200 commercial and noncommercial educational (NCE) FM radio... commercial, religious, educational, and other radio stations.\\11\\ Radio broadcasting stations which primarily... Analyzer Database as of February 19, 2009, about 10,600 (96 percent) of 11,050 commercial radio stations...

  12. Can broadcasting make a difference?

    Science.gov (United States)

    Lozare, B V

    1989-01-01

    Communication has untapped potential as a catalyst for community power in developing countries. Greater clarity is needed, however, on the channels of communication that will best integrate the contributions of diverse private and public agencies to meeting development needs. Also needed is a greater emphasis on strategic rather than technical aspects of communication. Most studies of communication have focused on the individual radio listener or television viewer, thereby ignoring the influence of broader forces. A concern for psychological determinants of decision making has led to a neglect of systemic factors. Another major error has been the failure to design longitudinal studies, or at least to collect information at 2 points in time. All of these observations point to a need to study power (economic, political, and social) as a crucial variable in understanding development. Moreover, there is a need for more attention to the role and impact of broadcasting on conflict management--an approach that requires abandoning traditional consensus models of communication. Yet another problem has been blind acceptance of the assumption that development communication and development support communication are unitary concepts that are universally applicable in all countries, all social and cultural contexts, and all development conditions. This unitary approach leads to the false conclusion that there is a grand model of development, and all communication personnel have to do is to see how radio and television fit into this conceptual framework. Finally, there has been a failure to appreciate fully the magnitude of poverty. If true development (defined as the capability of a people to go from where they are to where they want to be) is to occur, these strategic issues must be given serious attention.

  13. Alternative Awaiting and Broadcast for Two-Way Relay Fading Channels

    CERN Document Server

    Liu, Jianquan; Tao, Meixia

    2011-01-01

    We investigate a two-way relay (TWR) fading channel based on store-and-forward (SF), where two source nodes wish to exchange information with the help of a relay node. A new upper bound on the ergodic sum-capacity for the TWR fading system is derived when delay tends to infinity.We further propose two alternative awaiting and broadcast (AAB) schemes: pure partial decoding (PPD) with SF-I and combinatorial decoding (CBD) with SF-II, which approach the new upper bound at high SNR with unbounded and bounded delay respectively. Numerical results show that the proposed AAB schemes significantly outperform the traditional physical layer network coding (PLNC) methods without delay. Compared to the traditional TWR schemes without delay, the proposed CBD with SF-II method significantly improves the maximum sum-rate with an average delay of only some dozen seconds in the relay buffer.

  14. On the Compound MIMO Broadcast Channels with Confidential Messages

    CERN Document Server

    Kobayashi, Mari; Shamai, Shlomo; Debbah, Merouane

    2009-01-01

    We study the compound multi-input multi-output (MIMO) broadcast channel with confidential messages (BCC), where one transmitter sends a common message to two receivers and two confidential messages respectively to each receiver. The channel state may take one of a finite set of states, and the transmitter knows the state set but does not know the realization of the state. We study achievable rates with perfect secrecy in the high SNR regime by characterizing an achievable secrecy degree of freedom (s.d.o.f.) region for two models, the Gaussian MIMO-BCC and the ergodic fading multi-input single-output (MISO)-BCC without a common message. We show that by exploiting an additional temporal dimension due to state variation in the ergodic fading model, the achievable s.d.o.f. region can be significantly improved compared to the Gaussian model with a constant state, although at the price of a larger delay.

  15. Broadcast design in cognitive radio ad hoc networks

    CERN Document Server

    Song, Yi

    2014-01-01

    This SpringerBrief investigates the special challenges of broadcast design in cognitive radio (CR) ad hoc networks. It introduces two broadcast protocols in CR ad hoc networks: a quality-of-service based broadcast protocol under blind information and a fully-distributed broadcast protocol with collision avoidance. A novel unified analytical model is also presented to analyze the performance of the broadcast protocols. This is the first book dedicated to the unique broadcast design challenges in CR ad hoc networks. The authors also discuss the recent research on the performance analysis of broa

  16. Broadcasting a message in a parallel computer

    Science.gov (United States)

    Berg, Jeremy E [Rochester, MN; Faraj, Ahmad A [Rochester, MN

    2011-08-02

    Methods, systems, and products are disclosed for broadcasting a message in a parallel computer. The parallel computer includes a plurality of compute nodes connected together using a data communications network. The data communications network optimized for point to point data communications and is characterized by at least two dimensions. The compute nodes are organized into at least one operational group of compute nodes for collective parallel operations of the parallel computer. One compute node of the operational group assigned to be a logical root. Broadcasting a message in a parallel computer includes: establishing a Hamiltonian path along all of the compute nodes in at least one plane of the data communications network and in the operational group; and broadcasting, by the logical root to the remaining compute nodes, the logical root's message along the established Hamiltonian path.

  17. Multiple sound channels in satellite broadcasting

    Science.gov (United States)

    Windram, M. D.

    1982-09-01

    Proposals for a common European standard for sound satellite broadcasting are reviewed. Digital techniques are needed to provide multiple sound channels which would carry the stereophonic, multilanguage, and high quality sound desired. Agreement has been reached within the European Broadcasting Union on the digital sound coding parameters; a sampling frequency of 32 kHz should be used for satellite broadcasting, with 14 bits per sample in the initial coding, reduced to 10 bits by near instantaneous companding, if desired. Continuous and packet multiplexing are the two multiplexing techniques being considered. Three proposals for modulation are being considered which employ either a frequency-division or a time-division multiplex system. The close relation between sound and vision, particularly for modulation, is shown. It is likely that sound and vision standards will be agreed upon by spring 1983.

  18. Dynamic Index Coding for Wireless Broadcast Networks

    CERN Document Server

    Neely, Michael J; Zhang, Zhen

    2011-01-01

    We consider a wireless broadcast station that transmits packets to multiple users. The packet requests for each user may overlap, and some users may already have certain packets. This presents a problem of broadcasting in the presence of side information, and is a generalization of the well known (and unsolved) index coding problem of information theory. Rather than achieving the full capacity region, we develop a code-constrained capacity region, which restricts attention to a pre-specified set of coding actions. We develop a dynamic max-weight algorithm that allows for random packet arrivals and supports any traffic inside the code-constrained capacity region. Further, we provide a simple set of codes based on cycles in the underlying demand graph. We show these codes are optimal for a class of broadcast relay problems.

  19. Private TV and Radio Broadcasting in Azerbaijan

    Directory of Open Access Journals (Sweden)

    Vefalı ENSEROV

    2013-02-01

    Full Text Available The change of mass media and its innovation like the other areas were inevitable in post-soviet countries after the collapse of the Soviet Union. In this means, media area of Azerbaijan began to privatization process after independence and since mid 1990`s private radio and television channels began to broadcast in the country one by one that uni-centrally, officially and ideologically was directed by Moscow before. Progress which is related to privatization process of broadcasting in Azerbaijan is being handled in this study. This study also includes legal regulations in the mass media area and mechanism of auto-control. The activities of national private broadcasting companies are also scrutinized in the study as well as the condition of the communication freedom.

  20. Storage format for personalized broadcasting content consumption

    Science.gov (United States)

    Jin, Sung Ho; Jang, Jea-Seok; Min, Hyun-Seok; Ro, Yong Man; Kim, Hui Yong

    2007-01-01

    In this paper, we propose a storage format which binds digital broadcasts with related data such as TV-Anytime metadata, additional multimedia resources, and personal viewing history. The goal of the proposed format is to make it possible to offer personalized content consumption after recording broadcasting contents to storage devices, e.g., HD-DVD and Blu-ray Disc. To achieve that, we adopt MPEG-4 file format as a container and apply a binary format for scenes (BIFS) for representing and rendering personal viewing history. In addition, TV-Anytime metadata is used to describe broadcasts and to refer to the additional multimedia resources, e.g, images, audio clips, and short video clips. To demonstrate the usefulness of the proposed format, we introduce an application scenario and test it on that scenario.

  1. Satellite broadcasting - The European experience and perspective

    Science.gov (United States)

    Watson, Alan

    1991-11-01

    The use of satellites is considered as a means for developing a European transnational broadcasting system with attention given to the control of technology. A tension is described between maintaining technology as the property of one nation when the DBSs are developed for multinational program broadcasting. The simultaneous development of satellite systems is theorized to lead eventually to a single merged program for a particular nation, and the effect is considered of the regulation of cross-holding and cross-selling systems by investors.

  2. Trends in Daily Newspaper and Broadcast Ownership, 1922-1970

    Science.gov (United States)

    Sterling, Christopher H.

    1975-01-01

    Seeks to answer the question of how much media control has been concentrated in the top 100 markets over the past half century, examining the trends in broadcasting and cross-media (newspaper-broadcasting) ownership within those markets. (RB)

  3. 76 FR 5120 - Television Broadcasting Services; El Paso, TX

    Science.gov (United States)

    2011-01-28

    ... From the Federal Register Online via the Government Publishing Office ] FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; El Paso, TX AGENCY: Federal Communications... 73 Television, Television broadcasting. For the reasons discussed in the preamble, the...

  4. 76 FR 42573 - Radio Broadcasting Services; Oklahoma and Texas

    Science.gov (United States)

    2011-07-19

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Oklahoma and Texas AGENCY: Federal Communications... Review filed by Rawhide Radio, LLC, Capstar TX Limited Partnership, Clear Channel Broadcasting...

  5. 76 FR 13579 - Radio Broadcasting Services; Hebbronville, TX

    Science.gov (United States)

    2011-03-14

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Hebbronville, TX AGENCY: Federal Communications..., Radio broadcasting. For the reasons discussed in the preamble, the Federal Communications...

  6. 75 FR 10692 - Television Broadcasting Services; Birmingham, AL

    Science.gov (United States)

    2010-03-09

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Birmingham, AL AGENCY: Federal Communications... CFR Part 73 Television, Television broadcasting. 0 For the reasons discussed in the preamble,...

  7. 76 FR 54188 - Television Broadcasting Services; Montgomery, AL

    Science.gov (United States)

    2011-08-31

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Montgomery, AL AGENCY: Federal Communications... 73 Television, Television broadcasting. Federal Communications Commission. Barbara A. Kreisman,...

  8. 77 FR 6481 - Television Broadcasting Services; Lincoln, NE

    Science.gov (United States)

    2012-02-08

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Lincoln, NE AGENCY: Federal Communications... rulemaking filed by Lincoln Broadcasting, LLC (``LBL''), licensee of KFXL-TV, channel 51, Lincoln,...

  9. 76 FR 14855 - Television Broadcasting Services; Nashville, TN

    Science.gov (United States)

    2011-03-18

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Nashville, TN AGENCY: Federal Communications... 73 Television, Television broadcasting. Federal Communications Commission. Kevin R....

  10. 76 FR 67397 - Radio Broadcasting Services; Llano, Texas

    Science.gov (United States)

    2011-11-01

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Llano, Texas AGENCY: Federal Communications Commission... 47 CFR Part 73 Radio, Radio broadcasting. Federal Communications Commission. Nazifa Sawez,...

  11. 77 FR 59882 - Radio Broadcasting Services; Tignall, GA

    Science.gov (United States)

    2012-10-01

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Tignall, GA AGENCY: Federal Communications Commission... Radio, Radio broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant Chief,...

  12. 78 FR 3877 - Radio Broadcasting Services; Peach Springs, AZ

    Science.gov (United States)

    2013-01-17

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Peach Springs, AZ AGENCY: Federal Communications..., Radio broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant Chief, Audio...

  13. 76 FR 37049 - Radio Broadcasting Services; Bastrop, LA

    Science.gov (United States)

    2011-06-24

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Bastrop, LA AGENCY: Federal Communications Commission... Subjects in 47 CFR Part 73 Radio, Radio broadcasting. Federal Communications Commission. Nazifa...

  14. 76 FR 67375 - Radio Broadcasting Services; Various Locations

    Science.gov (United States)

    2011-11-01

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Various Locations AGENCY: Federal Communications..., Radio broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant Chief, Audio...

  15. 75 FR 67077 - Television Broadcasting Services; Huntsville, AL

    Science.gov (United States)

    2010-11-01

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Huntsville, AL AGENCY: Federal Communications... 73 Television, Television broadcasting. For the reasons discussed in the preamble, the...

  16. 75 FR 3641 - Television Broadcasting Services; Anchorage, AK

    Science.gov (United States)

    2010-01-22

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Anchorage, AK AGENCY: Federal Communications... broadcasting. 0 For the reasons discussed in the preamble, the Federal Communications Commission amends 47...

  17. 77 FR 16800 - Radio Broadcasting Services; Westfield, NY

    Science.gov (United States)

    2012-03-22

    ... From the Federal Register Online via the Government Publishing Office ] FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Westfield, NY AGENCY: Federal Communications..., Radio broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant Chief, Audio...

  18. 76 FR 3875 - Television Broadcasting Services; Decatur, IL

    Science.gov (United States)

    2011-01-21

    ... From the Federal Register Online via the Government Publishing Office ] FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Decatur, IL AGENCY: Federal Communications... 73 Television, Television broadcasting. For the reasons discussed in the preamble, the...

  19. 76 FR 13966 - Television Broadcasting Services; Topeka, KS

    Science.gov (United States)

    2011-03-15

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Topeka, KS AGENCY: Federal Communications... 73 Television, Television broadcasting. Federal Communications Commission. Barbara A. Kreisman,...

  20. 78 FR 27342 - Radio Broadcasting Services; Moran, Texas

    Science.gov (United States)

    2013-05-10

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Moran, Texas AGENCY: Federal Communications Commission..., Radio broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant Chief, Audio...

  1. 75 FR 25119 - Television Broadcasting Services; Seaford, DE

    Science.gov (United States)

    2010-05-07

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Seaford, DE AGENCY: Federal Communications... broadcasting. 0 For the reasons discussed in the preamble, the Federal Communications Commission amends 47...

  2. 76 FR 5119 - Television Broadcasting Services; Jackson, MS

    Science.gov (United States)

    2011-01-28

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Jackson, MS AGENCY: Federal Communications... 73 Television, Television broadcasting. For the reasons discussed in the preamble, the...

  3. 78 FR 32 - Radio Broadcasting Services; Westley, CA

    Science.gov (United States)

    2013-01-02

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Westley, CA AGENCY: Federal Communications Commission.... 8. List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. Federal Communications...

  4. 75 FR 3695 - Television Broadcasting Services; Birmingham, AL

    Science.gov (United States)

    2010-01-22

    ... From the Federal Register Online via the Government Publishing Office ] FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Birmingham, AL AGENCY: Federal Communications... 73 Television, Television broadcasting. For the reasons discussed in the preamble, the...

  5. 77 FR 58799 - Radio Broadcasting Services; Roaring Springs, TX

    Science.gov (United States)

    2012-09-24

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Roaring Springs, TX AGENCY: Federal Communications... 47 CFR Part 73 Radio, Radio broadcasting. Federal Communications Commission. Nazifa Sawez,...

  6. 78 FR 42700 - Radio Broadcasting Services; Various Locations

    Science.gov (United States)

    2013-07-17

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Various Locations AGENCY: Federal Communications... broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant Chief, Audio Division, Media...

  7. 76 FR 5290 - Television Broadcasting Services; Huntsville, AL

    Science.gov (United States)

    2011-01-31

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Huntsville, AL AGENCY: Federal Communications... Part 73 Television, Television broadcasting. For the reasons discussed in the preamble, the...

  8. 77 FR 64758 - Radio Broadcasting Services; Randsburg, CA

    Science.gov (United States)

    2012-10-23

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Randsburg, CA AGENCY: Federal Communications... Radio, Radio broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant Chief,...

  9. An enhanced framework for providing multimedia broadcast/multicast service over heterogeneous networks

    Institute of Scientific and Technical Information of China (English)

    Yi-han XU; Chee-Onn CHOW; Mau-Luen THAM; Hiroshi ISHII

    2014-01-01

    Multimedia broadcast multicast service (MBMS) with inherently low requirement for network resources has been proposed as a candidate solution for using such resources in a more efficient manner. On the other hand, the Next Generation Mobile Network (NGMN) combines multiple radio access technologies (RATs) to optimize overall network performance. Handover performance is becoming a vital indicator of the quality experience of mobile user equipment (UE). In contrast to the conventional vertical handover issue, the problem we are facing is how to seamlessly transmit broadcast/multicast sessions among heterogeneous networks. In this paper, we propose a new network entity, media independent broadcast multicast service center (MIBM-SC), to provide seamless handover for broadcast/multicast sessions over heterogeneous networks, by extensions and enhancements of MBMS and media independent information service (MIIS) architectures. Additionally, a network selection scheme and a cell transmission mode selection scheme are proposed for selecting the best target network and best transmission mode. Both schemes are based on a load-aware network capacity estimation algorithm. Simulation results show that the pro-posed approach has the capability to provide MBMS over heterogeneous networks, with improved handover performance in terms of packet loss rate, throughput, handover delay, cell load, bandwidth usage, and the peak signal-to-noise ratio (PSNR).

  10. An Adaptive Information Quantity-Based Broadcast Protocol for Safety Services in VANET

    Directory of Open Access Journals (Sweden)

    Wenjie Wang

    2016-01-01

    Full Text Available Vehicle-to-vehicle communication plays a significantly important role in implementing safe and efficient road traffic. When disseminating safety messages in the network, the information quantity on safety packets changes over time and space. However, most of existing protocols view each packet the same to disseminate, preventing vehicles from collecting more recent and precise safety information. Hence, an information quantity-based broadcast protocol is proposed in this paper to ensure the efficiency of safety messages dissemination. In particular, we propose the concept of emergency-degree to evaluate packets’ information quantity. Then we present EDCast, an emergency-degree-based broadcast protocol. EDCast differentiates each packet’s priority for accessing the channel based on its emergency-degree so as to provide vehicles with more safety information timely and accurately. In addition, an adaptive scheme is presented to ensure fast dissemination of messages in different network condition. We compare the performance of EDCast with those of three other representative protocols in a typical highway scenario. Simulation results indicate that EDCast achieves higher broadcast efficiency and less redundancy with less delivery delay. What we found demonstrates that it is feasible and necessary for incorporating information quantity of messages in designing an efficient safety message broadcast protocol.

  11. NCCB (National Citizens Committee for Broadcasting)--A Media Challenger.

    Science.gov (United States)

    Ranly, Donald P.

    This report traces the development of the National Citizens Committee for Broadcasting (NCCB) in its attempts to make broadcasting better serve the public interest. The committee first became active in 1967, when President Johnson's proposals and recommendations for funding the Corporation for Public Broadcasting were meeting resistance in the…

  12. 47 CFR 76.66 - Satellite broadcast signal carriage.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Satellite broadcast signal carriage. 76.66... MULTICHANNEL VIDEO AND CABLE TELEVISION SERVICE Carriage of Television Broadcast Signals § 76.66 Satellite broadcast signal carriage. (a) Definitions—(1) Satellite carrier. A satellite carrier is an entity that...

  13. Exploiting beacons for scalable broadcast data dissemination in VANETs

    NARCIS (Netherlands)

    Schwartz, Ramon S.; Das, Kallol; Scholten, Hans; Havinga, Paul

    2012-01-01

    Vehicular Ad-hoc Networks (VANETs) enable the timely broadcast dissemination of event-driven messages to interested vehicles. However, when dealing with broadcast communication, suppression techniques must be designed to prevent the so-called broadcast storm problem. Numerous suppression schemes aim

  14. 77 FR 75946 - Radio Broadcasting Services; Dove Creek, CO

    Science.gov (United States)

    2012-12-26

    ... COMMISSION 47 CFR Part 73 . Radio Broadcasting Services; Dove Creek, CO AGENCY: Federal Communications... 47 CFR Part 73 Radio, Radio broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant... Communications Commission proposes to amend 47 CFR Part 73 as follows: PART 73--RADIO BROADCAST SERVICES 1....

  15. 77 FR 58800 - Radio Broadcasting Services; Knox City, TX

    Science.gov (United States)

    2012-09-24

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Knox City, TX AGENCY: Federal Communications....415 and 1.420. ] List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. Federal Communications... Commission requests comment on a petition filed by Big Cat Broadcasting, LLC, proposing to amend the Table...

  16. 78 FR 37474 - Radio Broadcasting Services; Dove Creek, Colorado

    Science.gov (United States)

    2013-06-21

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Dove Creek, Colorado AGENCY: Federal Communications... CFR Part 73 Radio, Radio broadcasting. Federal Communications Commission. Nazifa Sawez, Chief, Audio... amends 47 CFR part 73 as follows: PART 73--RADIO BROADCAST SERVICES 0 1. The authority citation for...

  17. 78 FR 71557 - Radio Broadcasting Services; Tohatchi, New Mexico

    Science.gov (United States)

    2013-11-29

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Tohatchi, New Mexico AGENCY: Federal Communications... Radio, Radio broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant Chief, Audio... proposes to amend 47 CFR part 73 as follows: PART 73--RADIO BROADCAST SERVICES 0 1. The authority...

  18. 22 CFR 513.505 - Broadcasting Board of Governors responsibilities.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 2 2010-04-01 2010-04-01 true Broadcasting Board of Governors responsibilities. 513.505 Section 513.505 Foreign Relations BROADCASTING BOARD OF GOVERNORS GOVERNMENT DEBARMENT AND... of GSA, Board and Participants § 513.505 Broadcasting Board of Governors responsibilities. (a)...

  19. 75 FR 1546 - Television Broadcasting Services; Bangor, ME

    Science.gov (United States)

    2010-01-12

    ... COMMISSION 47 CFR Part 73 Television Broadcasting Services; Bangor, ME AGENCY: Federal Communications... Community Broadcasting Service, the licensee of WABI-TV, channel 19, Bangor, Maine, requesting the..., Television broadcasting. 0 For the reasons discussed in the preamble, the Federal Communications...

  20. 78 FR 36683 - Radio Broadcasting Services; Summit, Mississippi

    Science.gov (United States)

    2013-06-19

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Summit, Mississippi AGENCY: Federal Communications... Broadcasting, allots FM Channel 228A ] as a first local service at Summit, Mississippi. To accommodate that... U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting....

  1. 75 FR 19907 - Television Broadcasting Services; Beaumont, TX

    Science.gov (United States)

    2010-04-16

    ... COMMISSION 47 CFR Part 73 Television Broadcasting Services; Beaumont, TX AGENCY: Federal Communications... Broadcasting of Texas, the licensee of KFDM(TV), channel 21, Beaumont, Texas, requesting the substitution of... broadcasting. 0 For the reasons discussed in the preamble, the Federal Communications Commission amends 47...

  2. 78 FR 21337 - Radio Broadcasting Services; Matagorda, TX

    Science.gov (United States)

    2013-04-10

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Matagorda, TX AGENCY: Federal Communications... filed by Tejas Broadcasting Ltd., LLP (``Petitioner''), licensee of FM Station KMJR, Channel 252C2, Odem....415 and 1.420. List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. Federal...

  3. 47 CFR 74.21 - Broadcasting emergency information.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Broadcasting emergency information. 74.21 Section 74.21 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES... Applicable to All Services in Part 74 § 74.21 Broadcasting emergency information. (a) In an emergency...

  4. 75 FR 82279 - Radio Broadcasting Services; Various Locations

    Science.gov (United States)

    2010-12-30

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Various Locations AGENCY: Federal Communications... Subjects in 47 CFR Part 73 Radio, Radio broadcasting. 0 As stated in the preamble, the Federal Communications Commission amends 47 CFR part 73 as follows: PART 73--RADIO BROADCASTING SERVICES 0 1....

  5. 77 FR 64946 - Radio Broadcasting Services; Maysville, Georgia

    Science.gov (United States)

    2012-10-24

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Maysville, Georgia AGENCY: Federal Communications... filed by Appalachian Broadcasting Company, Inc., proposing the allotment of Channel 265A at Maysville... Broadcasting Company, Post Office Drawer E, 233 Big A Road, Toccoa, Georgia 30577. FOR FURTHER...

  6. 77 FR 23203 - Radio Broadcasting Services; Summit, MS

    Science.gov (United States)

    2012-04-18

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Summit, MS AGENCY: Federal Communications Commission.... The Commission requests comment on a petition filed by Bowen Broadcasting, proposing to amend the...., Officer, Bowen Broadcasting, 1125 Petrified Forest Road, Flora, Mississippi 39071. FOR FURTHER...

  7. 75 FR 41123 - Radio Broadcasting Services; Gearhart, OR

    Science.gov (United States)

    2010-07-15

    ... COMMISSION 47 CFR Part 73 . Radio Broadcasting Services; Gearhart, OR AGENCY: Federal Communications... comment on a petition filed by Black Hills Broadcasting, L.P. proposing the allotment of FM Channel 243A... Radio, Radio broadcasting. For the reasons discussed in the preamble, the Federal...

  8. 78 FR 26739 - Radio Broadcasting Services; Ehrenberg, Arizona

    Science.gov (United States)

    2013-05-08

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Ehrenberg, Arizona AGENCY: Federal Communications... filed by S and H Broadcasting, LLC, proposing the substitution of Channel 228C2 for vacant Channel 286C2... Subjects in 47 CFR Part 73 Radio, Radio broadcasting. Federal Communications Commission. Nazifa...

  9. 47 CFR 74.705 - TV broadcast analog station protection.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false TV broadcast analog station protection. 74.705... EXPERIMENTAL RADIO, AUXILIARY, SPECIAL BROADCAST AND OTHER PROGRAM DISTRIBUTIONAL SERVICES Low Power TV, TV Translator, and TV Booster Stations § 74.705 TV broadcast analog station protection. (a) The TV...

  10. Analysis and Improvement of a Secret Broadcast with Binding Encryption in Broadcasting Networks

    Science.gov (United States)

    Zhang, Mingwu; Li, Fagen; Takagi, Tsuyoshi

    A secret broadcasting scheme deals with secure transmission of a message so that more than one privileged receiver can decrypt it. Jeong et al. proposed an efficient secret broadcast scheme using binding encryption to obtain the security properties of IND-CPA semantic security and decryption consistency. Thereafter, Wu et al. showed that the Jeong et al.'s scheme just achieves consistency in relatively weak condition and is also inefficient, and they constructed a more efficient scheme to improve the security. In this letter, we demonstrate that the Wu et al.'s scheme is also a weak decryption consistency and cannot achieve the decryption consistency if an adversary has the ability to tamper with the ciphertext. We also present an improved and more efficient secret broadcast scheme to remedy the weakness. The proposed scheme achieves decryption consistency and IND-CCA security, which can protect against stronger adversary's attacks and allows us to broadcast a digital message securely.

  11. Open-Broadcast Radio: Three Strategies.

    Science.gov (United States)

    Theroux, James; Gunter, Jock

    Three effective strategies in quality open-broadcast programming for increasing educational radio's audience attraction are suggested as alternatives to the usual approach to such programming in the third world: (1) the advertising approach, which is suited to audience motivation for accomplishing concrete behavioral objectives; (2) the…

  12. Broadcast Journalism Education and the Capstone Experience

    Science.gov (United States)

    Tanner, Andrea; Forde, Kathy Roberts; Besley, John C.; Weir, Tom

    2012-01-01

    This study assesses the current state of the television news capstone experience in accredited journalism and mass communication programs in the United States. Specifically, the authors employed a mixed-methods approach, interviewing 20 television news capstone instructors and conducting an analysis of broadcast journalism curriculum information…

  13. Broadcast Condom Advertising: A Case Study.

    Science.gov (United States)

    Kaplan, Herb; Houlberg, Rick

    1990-01-01

    Examines a San Francisco television station's decision to accept paid condom advertising. Notes that station leaders debated questions of public interest and public tastes in a city hard hit by AIDS. Finds that the station devised careful guidelines and began broadcasting the commercials on a trial basis. Notes that nearly all public and media…

  14. Notes on Bit-reversal Broadcast Scheduling

    CERN Document Server

    Kik, Marcin

    2012-01-01

    This report contains revision and extension of some results about RBO [arXiv:1108.5095]. RBO is a simple and efficient broadcast scheduling of $n = 2^k$ uniform frames for battery powered radio receivers. Each frame contains a key from some arbitrary linearly ordered universe. The broadcast cycle -- a sequence of frames sorted by the keys and permuted by $k$-bit reversal -- is transmitted in a round robin fashion by the broadcaster. At arbitrary time during the transmission, the receiver may start a simple protocol that reports to him all the frames with the keys that are contained in a specified interval of the key values $[K', K"]$. RBO receives at most $2 k + 1$ other frames' keys before receiving the first key from $[K', K"]$ or noticing that there are no such keys in the broadcast cycle. As a simple corollary, $4 k + 2$ is upper bound the number of keys outside $[K', K"]$ that will ever be received. In unreliable network the expected number of efforts to receive such frames is bounded by $(8 k + 4) / p +...

  15. Strategy and Space for Broadcasting Facilities

    DEFF Research Database (Denmark)

    Jensen, Per Anker

    2006-01-01

    The paper is based on results from an ongoing research project on space strategies and building values, which in-cludes a major case study of the development of facilities for the Danish Broadcasting Corporation over time. The focus is to identify, how different space strategies have been...

  16. A Stochastic Broadcast Pi-Calculus

    DEFF Research Database (Denmark)

    Song, Lei; Nielson, Flemming; Nielsen, Bo Friis

    2011-01-01

    In this paper we propose a stochastic broadcast PI-calculus which can be used to model server-client based systems where synchronization is always governed by only one participant. Therefore, there is no need to determine the joint synchronization rates. We also take immediate transitions...

  17. Creating interactive video broadcasting system for VBLHEP

    Science.gov (United States)

    Slepov, I. P.

    2016-09-01

    The article describes the creation of a web service, which combines the possibility of organizing video broadcasts and video conferences for the VBLHEP, JINR events. Software and hardware components used for the organization of video streaming and video conferencing are presented.

  18. Broadcast Communication by System Frequency Modulation

    DEFF Research Database (Denmark)

    Douglass, Philip James; You, Shi; Heussen, Kai

    2012-01-01

    off-nominal system frequency values is a novel narrowband broadcast communications channel between system operators and frequency sensitive distributed energy resources (FS-DER). The feasibility of the proposed system is evaluated on an existing island power system in Denmark. This study shows...

  19. A special broadcast of CERN's Video news

    CERN Multimedia

    2003-01-01

    A special edition of CERN's video news giving a complete update on the LHC project is to be broadcast in the Main Auditorium. After your lunch make a small detour to the Main Auditorium, where you see the big picture. On 14, 15 and 16 May, between 12:30 and 14:00, a special edition of CERN's video news bulletin will be broadcast in the Main Auditorium. You will have the chance get up-to-date on the LHC project and its experiments. With four years to go before the first collisions in the LHC, the LHC Project Leader Lyn Evans will present a status report on the construction of the accelerator. The spokesmen of the five LHC experiments (ALICE, ATLAS, CMS, LHCb and TOTEM) will explain how the work is going and what the state of play will be in four years' time. This special video news broadcast is the result of collaboration between the CERN Audiovisual Service, the Photo Service and the External communication section. The broadcast will begin with a brand-new programme title sequence. And just as in the real c...

  20. 47 CFR 0.434 - Data bases and lists of authorized broadcast stations and pending broadcast applications.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Data bases and lists of authorized broadcast... Commission § 0.434 Data bases and lists of authorized broadcast stations and pending broadcast applications. Periodically the FCC makes available copies of its data bases and lists containing information about...

  1. A Broadcast Channel Assignment Mechanism based on The Broadcast Tree for Multi-radio Multi-channel Wireless Mesh Networks

    Science.gov (United States)

    Xia, Yan; Zeng, Yingzhi

    2016-02-01

    This paper proposed a broadcast Channel Assignment Mechanism on base of optimized Broadcast Tree for wireless Mesh network (WMN), which is created by Branch and Bound Method. The simulations show that our algorithm not only reduces the broadcast redundancy but also avoids the potential channel interferences produced by unnecessary relay nodes.

  2. Histories of Public Service Broadcasters on the Web

    DEFF Research Database (Denmark)

    This edited volume details multiple and dynamic histories of relations between public service broadcasters and the World Wide Web. What does it mean to be a national broadcaster in a global communications environment? What are the commercial and public service pressures that were brought to bear...... when public service broadcasters implemented web services? How did “one- to-many” broadcasters adapt to the “many-to-many” medium of the internet? The thematic or- ganisation of this collection addresses such major issues, while each chapter offers a particular historical account of relations between...... public service broadcasters and the World Wide Web....

  3. Analysis and Implement of Broadcast Program Monitoring Data

    Directory of Open Access Journals (Sweden)

    Song Jin Bao

    2016-01-01

    Full Text Available With the rapid development of the radio and TV industry and the implementation of INT (the integration of telecommunications networks, cable TV networks and the Internet, the contents of programs and advertisements is showing massive, live and interactive trends. In order to meet the security of radio and television, the broadcast of information have to be controlled and administered. In order to master the latest information of public opinion trends through radio and television network, it is necessary research the specific industry applications of broadcast program monitoring. In this paper, the importance of broadcast monitoring in public opinion analysis is firstly analysed. The monitoring radio and television programs broadcast system architecture is proposed combining with the practice, focusing on the technical requirements and implementation process of program broadcast, advertisement broadcast and TV station broadcast monitoring. The more efficient information is generated through statistical analysis, which provides data analysis for radio and television public opinion analysis.

  4. Adaptive broadcasting mechanism for bandwidth allocation in mobile services.

    Science.gov (United States)

    Horng, Gwo-Jiun; Wang, Chi-Hsuan; Chou, Chih-Lun

    2014-01-01

    This paper proposes a tree-based adaptive broadcasting (TAB) algorithm for data dissemination to improve data access efficiency. The proposed TAB algorithm first constructs a broadcast tree to determine the broadcast frequency of each data and splits the broadcast tree into some broadcast wood to generate the broadcast program. In addition, this paper develops an analytical model to derive the mean access latency of the generated broadcast program. In light of the derived results, both the index channel's bandwidth and the data channel's bandwidth can be optimally allocated to maximize bandwidth utilization. This paper presents experiments to help evaluate the effectiveness of the proposed strategy. From the experimental results, it can be seen that the proposed mechanism is feasible in practice.

  5. Study on moving target detection to passive radar based on FM broadcast transmitter

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Target detection by a noncooperative illuminator is a topic of general interest in the electronic warfare field.First of all,direct-path interference(DPI)suppression which is the technique of bottleneck of moving target detection by a noncooperative frequency modulation(FM) broadcast transmitter is analyzed in this article;Secondly,a space-time-frequency domain synthetic solution to this problem is introduced:Adaptive nulling array processing is considered in the space domain,DPI cancellation based on adaptive fractional delay interpolation(AFDI)technique is used in planned time domain,and long-time coherent integration is utilized in the frequency domain;Finally,an experimental system is planned by considering FM broadcast transmitter as a noncooperative illuminator,Simulation results by real collected data show that the proposed method has a better performance of moving target detection.

  6. BROADCAST SCHEDULING WITH MIMO LINKS IN MULTI-HOP AD HOC NETWORKS

    Institute of Scientific and Technical Information of China (English)

    Zhang Guanghui; Li Jiandong; Zhao Min; Li Changle

    2007-01-01

    As the current medium access control protocols with Multiple Input Multiple Output (MIMO) links only bear point to point service, broadcast scheduling algorithm in ad hoc networks with MIMO links is proposed. The key to the proposed broadcast scheduling algorithm is the time slot scheduling algorithm which guarantees collision-free transmissions for every node and the minimum frame length. The proposed algorithm increases the simultaneous transmissions of MIMO links efficiently. Due to the interference null capacity of MIMO links, the interference node set of each node can decrease from two-hop neighbors to one-hop neighbors possibly. Simulation results show that our algorithm can greatly improve network capacity and decrease average packet delay.

  7. Reliable Multihop Broadcast Protocol with a Low-Overhead Link Quality Assessment for ITS Based on VANETs in Highway Scenarios

    Directory of Open Access Journals (Sweden)

    Alejandro Galaviz-Mosqueda

    2014-01-01

    Full Text Available Vehicular ad hoc networks (VANETs have been identified as a key technology to enable intelligent transport systems (ITS, which are aimed to radically improve the safety, comfort, and greenness of the vehicles in the road. However, in order to fully exploit VANETs potential, several issues must be addressed. Because of the high dynamic of VANETs and the impairments in the wireless channel, one key issue arising when working with VANETs is the multihop dissemination of broadcast packets for safety and infotainment applications. In this paper a reliable low-overhead multihop broadcast (RLMB protocol is proposed to address the well-known broadcast storm problem. The proposed RLMB takes advantage of the hello messages exchanged between the vehicles and it processes such information to intelligently select a relay set and reduce the redundant broadcast. Additionally, to reduce the hello messages rate dependency, RLMB uses a point-to-zone link evaluation approach. RLMB performance is compared with one of the leading multihop broadcast protocols existing to date. Performance metrics show that our RLMB solution outperforms the leading protocol in terms of important metrics such as packet dissemination ratio, overhead, and delay.

  8. Delayed Puberty

    DEFF Research Database (Denmark)

    Kolby, Nanna; Busch, Alexander Siegfried; Juul, Anders

    2017-01-01

    Delayed puberty can be a source of great concern and anxiety, although it usually is caused by a self-limiting variant of the normal physiological timing named constitutional delay of growth and puberty (CDGP). Delayed puberty can, however, also be the first presentation of a permanent condition ...... mineral density) and psychological (e.g., low self-esteem) and underline the importance of careful clinical assessment of the patients.......Delayed puberty can be a source of great concern and anxiety, although it usually is caused by a self-limiting variant of the normal physiological timing named constitutional delay of growth and puberty (CDGP). Delayed puberty can, however, also be the first presentation of a permanent condition...

  9. Delayed fission

    Energy Technology Data Exchange (ETDEWEB)

    Hatsukawa, Yuichi [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    1997-07-01

    Delayed fission is a nuclear decay process that couples {beta} decay and fission. In the delayed fission process, a parent nucleus undergoes {beta} decay and thereby populates excited states in the daughter. If these states are of energies comparable to or greater than the fission barrier of the daughter, then fission may compete with other decay modes of the excited states in the daughter. In this paper, mechanism and some experiments of the delayed fission will be discussed. (author)

  10. Measurement System for Playout Delay of TV Signals

    NARCIS (Netherlands)

    Kooij, W.J.; Stokking, H.M.; Brandenburg, R. van; Boer, P.T. de

    2014-01-01

    TV signals are carried towards end-users using different (broadcast) technologies and by different providers. This is causing differences in the playout timing of the TV signal at different locations and devices. Authors have developed a measurement system for measuring the relative playout delay of

  11. Measurement System for Playout Delay of TV Signals

    NARCIS (Netherlands)

    Kooij, W.J.; Stokking, H.M.; Brandenburg, R. van; Boer, P.T. de

    2014-01-01

    TV signals are carried towards end-users using different (broadcast) technologies and by different providers. This is causing differences in the playout timing of the TV signal at different locations and devices. Authors have developed a measurement system for measuring the relative playout delay of

  12. Improving broadcast channel rate using hierarchical modulation

    CERN Document Server

    Meric, Hugo; Arnal, Fabrice; Lesthievent, Guy; Boucheret, Marie-Laure

    2011-01-01

    We investigate the design of a broadcast system where the aim is to maximise the throughput. This task is usually challenging due to the channel variability. Forty years ago, Cover introduced and compared two schemes: time sharing and superposition coding. The second scheme was proved to be optimal for some channels. Modern satellite communications systems such as DVB-SH and DVB-S2 mainly rely on time sharing strategy to optimize throughput. They consider hierarchical modulation, a practical implementation of superposition coding, but only for unequal error protection or backward compatibility purposes. We propose in this article to combine time sharing and hierarchical modulation together and show how this scheme can improve the performance in terms of available rate. We present the gain on a simple channel modeling the broadcasting area of a satellite. Our work is applied to the DVB-SH standard, which considers hierarchical modulation as an optional feature.

  13. Public Service Broadcasters and User Profiles

    DEFF Research Database (Denmark)

    Sørensen, Jannick Kirk

    2007-01-01

    Public Service Broadcasters in northern Europe have – in different paces and with different activities – since long been delivering media content to listeners and viewers not only by broadcast but also ‘on demand’. With this pull-based distribution, and with PSBs fighting for marked shares...... on commercial conditions, it is tempting to ask if PSBs should, like their commercial competitors, strive for a more personalised media delivery enabled by user profiles. Information on users’ preferences and interests could be collected by the PSB either indirectly or directly when a program is retrieved on...... as ‘recommender services’, and embedded in the overarching concept of ‘Customer Relation Management’ (CRM). On the other hand it is often stressed that it is the duty of PSB to serve the whole society, not only a few ‘star customers’ – as expressed in PSB remits and in so called ‘public service contracts...

  14. Methods and Applications in Interactive Broadcasting

    Directory of Open Access Journals (Sweden)

    George Lekakos

    2007-09-01

    Full Text Available Interactive TV technology has been addressed in many previous works, but there is sparse research on the topic of interactive content broadcasting and how to support the production process. In this article, the interactive broadcasting process is broadly defined to include studio technology and digital TV applications at consumer set-top boxes. In particular, augmented reality studio technology employs smart-projectors as light sources and blends real scenes with interactive computer graphics that are controlled at end-user terminals. Moreover, TV producer-friendly multimedia authoring tools empower the development of novel TV formats. Finally, the support for user-contributed content raises the potential to revolutionize the hierarchical TV production process, by introducing the viewer as part of content delivery chain.

  15. Factors influencing delay time and coronary arterial density during coronary angiography with DSCT

    Energy Technology Data Exchange (ETDEWEB)

    Lijun Tang; Xiaomei Zhu; Yi Xu; Tongfu Yu; Hai Xu; Jinhua Tang; Dehang Wang (Dept. of Radiology, the First Affiliated Hospital of Nanjing Medical Univ., Nanjing, Jiangsu (China)), e-mail: wangdehang@hotmail.com; Dogra, Vikram (Dept. of Radiology, Univ. of Rochester, NY (United States))

    2011-02-15

    Background: CT angiography (CTA) plays an important role in diagnosing coronary arterial disease. Delay time and density of the coronary arteries related with patient-specific factors are essential for getting an optimal CTA image. Purpose: To investigate various factors influencing delay time and coronary arterial density during coronary CTA with dual source CT. Material and Methods: One hundred and sixteen consecutive subjects who underwent cardiac DSCT with retrospective ECG-gating were included. Factors including gender, age, height, weight, transversal cardiac diameter (TCD), transversal thoracic diameter (TTD), heart rate (HR), body surface area (BSA = [weight x height/3600]1/2) and cardiothoracic ratio (CTR = TCD/TTD) were recorded, measured and calculated before administration of contrast media during coronary CT angiography. Delay time was determined as duration from the beginning of the injection to the density in the descending aorta at the level of right main pulmonary artery reaching a threshold of 100 HU. Coronary arterial density was measured at the mid portion of the right coronary artery. Regression analysis and stepwise regression analysis were used to investigate the influence of these factors on delay time and coronary arterial density. Results: Delay time decreased with an increasing HR and it was shorter in women than men. Delay time increased with an increasing TCD. Delay time could be predicted by the formula: DT = 16.651-0.110 x HR + 1.902 x gender + 0.394 x TCD (where DT is abbreviation for delay time, gender is 0 for women and 1 for men). Coronary arterial density decreased with an increasing HR and weight. Coronary arterial density could be predicted by the formula: CAD = 923.42-4.099 x HR-3.293 x weight (CAD = coronary arterial density). There was no relationship between the other factors mentioned above and delay time or coronary arterial density. Conclusion: Delay time is influenced by HR, gender and TCD. Coronary arterial density

  16. Buryat Ethnic Mentality and National Broadcasting

    Directory of Open Access Journals (Sweden)

    Dagbaev E.D.

    2016-01-01

    Full Text Available The article focuses on ways the national (in a regional aspect broadcasting impacts ethnic mind formation and its further development, the latter issues being under a main focus of Buryat State University scholars as well. They set an objective to investigate the issue from different angles, for this reason gathering within scientific projects into scholars’groups took place. In this case the group of educators, philologists and sociologists have focused on media which construct ethnic mind via interiorizing and cultivating ethnic-related ideas and images for five years. Providing a general outlook of the world, National Broadcasting (NB is a proper institutional mechanism that helps a person identify himself / herself among different ethnic groups. Ethnic identity and self-consciousness are manifested in various social and intercultural communications. This allows a person to become aware of the peculiarities of his / her and others’ ethnic communities. The outcomes of a sociological research held by the authors verify the significance of both the posed problems and the TV role. One may find theoretical and empirical data in Zandeeva, S.K. (2012, Dagbaeva, N.Zh.(2012, Dagbaev (2014, Dashinimaeva, P.P., et al (2015. Generally, national programs do contribute to integrating people of the same ethnicity into a common community, to shaping such moral qualities as humanity, love to motherland, respect for the elders and other ethnic nationalities. All these characteristics form proper rules of living in a tolerant community. At the same time, they contribute to strengthening of the feeling of ethnic unity. Beyond any doubt, NB needs a relevant assessment and interest to promote and advance its function in a modern society. On the one hand, telecommunications markets liberalize. On the other hand, broadcasting technologies have developed to a highest extent, leading to the increase of international competition [14]. Anyway, both directions force

  17. Secure Broadcasting with Uncertain Channel State Information

    KAUST Repository

    Hyadi, Amal

    2017-03-13

    We investigate the problem of secure broadcasting over fast fading channels with imperfect main channel state information (CSI) at the transmitter. In particular, we analyze the effect of the noisy estimation of the main CSI on the throughput of a broadcast channel where the transmission is intended for multiple legitimate receivers in the presence of an eavesdropper. Besides, we consider the realistic case where the transmitter is only aware of the statistics of the eavesdropper\\'s CSI and not of its channel\\'s realizations. First, we discuss the common message transmission case where the source broadcasts the same information to all the receivers, and we provide an upper and a lower bounds on the ergodic secrecy capacity. For this case, we show that the secrecy rate is limited by the legitimate receiver having, on average, the worst main channel link and we prove that a non-zero secrecy rate can still be achieved even when the CSI at the transmitter is noisy. Then, we look at the independent messages case where the transmitter broadcasts multiple messages to the receivers, and each intended user is interested in an independent message. For this case, we present an expression for the achievable secrecy sum-rate and an upper bound on the secrecy sum-capacity and we show that, in the limit of large number of legitimate receivers K, our achievable secrecy sum-rate follows the scaling law log((1-a ) log(K)), where is the estimation error variance of the main CSI. The special cases of high SNR, perfect and no-main CSI are also analyzed. Analytical derivations and numerical results are presented to illustrate the obtained expressions for the case of independent and identically distributed Rayleigh fading channels.

  18. Secure Broadcasting with Uncertain Channel State Information

    KAUST Repository

    Hyadi, Amal

    2016-01-06

    We investigate the problem of secure broadcasting over fast fading channels with imperfect main channel state information (CSI) at the transmitter. In particular, we analyze the effect of the noisy estimation of the main CSI on the throughput of a broadcast channel where the transmission is intended for multiple legitimate receivers in the presence of an eavesdropper. Besides, we consider the realistic case where the transmitter is only aware of the statistics of the eavesdropper s CSI and not of its channel s realizations. First, we discuss the common message transmission case where the source broadcasts the same information to all the receivers, and we provide an upper and a lower bounds on the ergodic secrecy capacity. For this case, we show that the secrecy rate is limited by the legitimate receiver having, on average, the worst main channel link and we prove that a non-zero secrecy rate can still be achieved even when the CSI at the transmitter is noisy. Then, we look at the independent messages case where the transmitter broadcasts multiple messages to the receivers, and each intended user is interested in an independent message. For this case, we present an expression for the achievable secrecy sum-rate and an upper bound on the secrecy sum-capacity and we show that, in the limit of large number of legitimate receivers K, our achievable secrecy sum-rate follows the scaling law log((1-a ) log(K)), where is the estimation error variance of the main CSI. The special cases of high SNR, perfect and no-main CSI are also analyzed. Analytical derivations and numerical results are presented to illustrate the obtained expressions for the case of independent and identically distributed Rayleigh fading channels.

  19. Keyphrase Cloud Generation of Broadcast News

    OpenAIRE

    Marujo, Luis; Viveiros, Márcio; Neto, João Paulo da Silva

    2013-01-01

    This paper describes an enhanced automatic keyphrase extraction method applied to Broadcast News. The keyphrase extraction process is used to create a concept level for each news. On top of words resulting from a speech recognition system output and news indexation and it contributes to the generation of a tag/keyphrase cloud of the top news included in a Multimedia Monitoring Solution system for TV and Radio news/programs, running daily, and monitoring 12 TV channels and 4 Radios.

  20. Direct broadcast satellite-radio, receiver development

    Science.gov (United States)

    Vaisnys, A.; Bell, D.; Gevargiz, J.; Golshan, Nasser

    1993-01-01

    The status of the ongoing Direct Broadcast Satellite-Radio (DBS-R) Receiver Development Task being performed at the Jet Propulsion Laboratory, California Institute of Technology (JPL) is reported. This work is sponsored by the Voice of America/U.S. Information Agency through an agreement with NASA. The objective of this task is to develop, build, test, and demonstrate a prototype receiver that is compatible with reception of digital audio programs broadcast via satellites. The receiver is being designed to operate under a range of reception conditions, including fixed, portable, and mobile, as well as over a sufficiently wide range of bit rates to accommodate broadcasting systems with different cost/audio quality objectives. While the requirements on the receiver are complex, the eventual goal of the design effort is to make the design compatible with low cost production as a consumer product. One solution may be a basic low cost core design suitable for a majority of reception conditions, with optional enhancements for reception in especially difficult environments. Some of the receiver design parameters were established through analysis, laboratory tests, and a prototype satellite experiment accomplished in late 1991. Many of the necessary design trades will be made during the current simulation effort, while a few of the key design options will be incorporated into the prototype for evaluation during the planned satellite field trials.

  1. Direct broadcast satellite-radio, receiver development

    Science.gov (United States)

    Vaisnys, A.; Bell, D.; Gevargiz, J.; Golshan, Nasser

    The status of the ongoing Direct Broadcast Satellite-Radio (DBS-R) Receiver Development Task being performed at the Jet Propulsion Laboratory, California Institute of Technology (JPL) is reported. This work is sponsored by the Voice of America/U.S. Information Agency through an agreement with NASA. The objective of this task is to develop, build, test, and demonstrate a prototype receiver that is compatible with reception of digital audio programs broadcast via satellites. The receiver is being designed to operate under a range of reception conditions, including fixed, portable, and mobile, as well as over a sufficiently wide range of bit rates to accommodate broadcasting systems with different cost/audio quality objectives. While the requirements on the receiver are complex, the eventual goal of the design effort is to make the design compatible with low cost production as a consumer product. One solution may be a basic low cost core design suitable for a majority of reception conditions, with optional enhancements for reception in especially difficult environments. Some of the receiver design parameters were established through analysis, laboratory tests, and a prototype satellite experiment accomplished in late 1991. Many of the necessary design trades will be made during the current simulation effort, while a few of the key design options will be incorporated into the prototype for evaluation during the planned satellite field trials.

  2. The Use of Television Format Adaptation in Denmark: Public Service Broadcasters Compared to Commercial Broadcasters

    DEFF Research Database (Denmark)

    Jensen, Pia Majbritt

    The use of television formats, developed in one market and sold internationally for local adaptation, has become a widespread practice in international television (Oren & Shahaf 2012). In what could be termed a case of ‘creative destruction’ (Schumpeter 1942), the format trade’s acceleration has...... brought about major changes in both production and scheduling. This paper evaluates the impact that format adaptation has had in Denmark on public service broadcasters (PSBs) compared to commercial broadcasters. To illustrate transnational differences, references are made to Germany and Australia. First......, a quantitative analysis of PSB and commercial schedules in Denmark is presented to establish the extent to which PSBs have employed formats between 2000 and 2012, and how this compares with commercial broadcasters. Secondly, a qualitative analysis looks into genre and the nature of the individual formats...

  3. Using MPEG- at the Consumer Terminal in Broadcasting

    Directory of Open Access Journals (Sweden)

    Lalmas Mounia

    2002-01-01

    Full Text Available The European Union IST research programme SAMBITS (System for Advanced Multimedia Broadcast and IT Services project is using Digital Video Broadcasting (DVB, the DVB Multimedia Home Platform (MHP standard, MPEG- and MPEG- in a studio production and multimedia terminal system to integrate broadcast data and Internet data. This involves using data delivery over multiple paths and the use of a back channel for interaction. MPEG- is being used to identify programme content and to construct queries to allow users to identify and retrieve interesting related content. Searching for content is being carried out using the HySpirit search engine. The paper deals with terminal design issues, the use of MPEG- for broadcasting applications and using a consumer broadcasting terminal for searching for material related to a broadcast.

  4. Standardization in technology adoption: A comparison of broadcast TV cases

    OpenAIRE

    Kim, Heejung

    2012-01-01

    Based on developments in the U.S. television, this study illustrates the choice of technical standards by the government. Broadcasting in the U.S. has been largely affected by the adoption of new technology. Technology adoptions have impacted economy, society, industry, and government policies of the U.S. broadcasting. The purpose of this study is to examine standard-setting development and policies for major technology adoptions in broadcasting: color TV adoption and digital TV adoption.

  5. Public and Private Activity in Commercial TV Broadcasting

    OpenAIRE

    Hansen, Bodil O.; Keiding, Hans

    2006-01-01

    We consider a model of commercial television market, where private broadcasters coexist with a public television broadcaster. Assuming that the public TV station follows a policy of Ramsey pricing whereas the private stations are profit maximizers, we consider the equilibria in this market and compare with a situation where the public station is privatized and acts as another private TV broadcaster. A closer scrutiny of the market for commercial television leads to a distinction between targe...

  6. No-broadcasting theorem and its classical counterpart.

    Science.gov (United States)

    Kalev, Amir; Hen, Itay

    2008-05-30

    Although it is widely accepted that "no-broadcasting"-the nonclonability of quantum information-is a fundamental principle of quantum mechanics, an impossibility theorem for the broadcasting of general density matrices has not yet been formulated. In this Letter, we present a general proof for the no-broadcasting theorem, which applies to arbitrary density matrices. The proof relies on entropic considerations, and as such can also be directly linked to its classical counterpart, which applies to probabilistic distributions of statistical ensembles.

  7. 47 CFR 73.1210 - TV/FM dual-language broadcasting in Puerto Rico.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false TV/FM dual-language broadcasting in Puerto Rico...-language broadcasting in Puerto Rico. (a) For the purpose of this section, dual-language broadcasting shall... FM broadcast station may devote more than 15 hours per week to dual-language broadcasting, nor...

  8. Automatic Dependent Surveillance - Broadcast Verification and Validation Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Automatic Dependent Surveillance ? Broadcast (ADS-B) is an emerging Communications, Navigation, and Surveillance (CNS) technology that will vastly expand the state...

  9. A broadcast engineering tutorial for non-engineers

    CERN Document Server

    Pizzi, Skip

    2014-01-01

    A Broadcast Engineering Tutorial for Non-Engineers is the leading publication on the basics of broadcast technology. Whether you are new to the industry or do not have an engineering background, this book will give you a comprehensive primer of television, radio, and digital media relating to broadcast-it is your guide to understanding the technical world of radio and television broadcast engineering. It covers all the important topics such as DTV, IBOC, HD, standards, video servers, editing, electronic newsrooms, and more.

  10. Energy Efficient Probabilistic Broadcasting for Mobile Ad-Hoc Network

    Science.gov (United States)

    Kumar, Sumit; Mehfuz, Shabana

    2016-08-01

    In mobile ad-hoc network (MANETs) flooding method is used for broadcasting route request (RREQ) packet from one node to another node for route discovery. This is the simplest method of broadcasting of RREQ packets but it often results in broadcast storm problem, originating collisions and congestion of packets in the network. A probabilistic broadcasting is one of the widely used broadcasting scheme for route discovery in MANETs and provides solution for broadcasting storm problem. But it does not consider limited energy of the battery of the nodes. In this paper, a new energy efficient probabilistic broadcasting (EEPB) is proposed in which probability of broadcasting RREQs is calculated with respect to remaining energy of nodes. The analysis of simulation results clearly indicate that an EEPB route discovery scheme in ad-hoc on demand distance vector (AODV) can increase the network lifetime with a decrease in the average power consumption and RREQ packet overhead. It also decreases the number of dropped packets in the network, in comparison to other EEPB schemes like energy constraint gossip (ECG), energy aware gossip (EAG), energy based gossip (EBG) and network lifetime through energy efficient broadcast gossip (NEBG).

  11. 77 FR 50053 - Radio Broadcasting Services; Westley, CA

    Science.gov (United States)

    2012-08-20

    ... 73 Radio, Radio broadcasting. Federal Communications Commission. Peter H. Doyle, Chief, Audio.... FOR FURTHER INFORMATION CONTACT: Michael Wagner, Media Bureau, (202) 418-2700 or Rolanda F. Smith...

  12. Adaptive broadcasting method using neighbor type information in wireless sensor networks.

    Science.gov (United States)

    Jeong, Hyocheol; Kim, Jeonghyun; Yoo, Younghwan

    2011-01-01

    Flooding is the simplest and most effective way to disseminate a packet to all nodes in a wireless sensor network (WSN). However, basic flooding makes all nodes transmit the packet at least once, resulting in the broadcast storm problem in a worst case, and in turn, network resources are severely wasted. Particularly, power is the most valuable resource of WSNs as nodes are powered by batteries, then the waste of energy by the basic flooding lessens the lifetime of WSNs. In order to solve the broadcast storm problem, this paper proposes a dynamic probabilistic flooding that utilizes the neighbor information like the numbers of child and sibling nodes. In general, the more sibling nodes there are, the higher is the probability that a broadcast packet may be sent by one of the sibling nodes. The packet is not retransmitted by itself, though. Meanwhile, if a node has many child nodes its retransmission probability should be high to achieve the high packet delivery ratio. Therefore, these two terms-the numbers of child and sibling nodes-are adopted in the proposed method in order to attain more reliable flooding. The proposed method also adopts the back-off delay scheme to avoid collisions between close neighbors. Simulation results prove that the proposed method outperforms previous flooding methods in respect of the number of duplicate packets and packet delivery ratio.

  13. A Dynamic Probabilistic Broadcasting Scheme based on Cross-Layer design for MANETs

    Directory of Open Access Journals (Sweden)

    Qing-wen WANG

    2010-11-01

    Full Text Available Broadcasting plays a fundamental role in transmitting a message from the sender to the rest of the network nodes in Mobile Ad hoc Networks (MANETs. The blind flooding scheme causes a broadcast storm problem, which leads to significant network performance degradation. In order to solve the problem, a dynamic probabilistic broadcasting scheme cross-layer design for MANETs (DPBSC is proposed. DPBSC adopts the cross-layer design, which lets routing layer share the received signal power information at MAC layer while still maintaining separation between the two layers. The additional transmission range that can benefit from rebroadcast is calculated according to the received signal power, which is applied to dynamically adjust the rebroadcast probability. DPBSC reduces the redundant retransmission and the chance of the contention and collision in the networks. Simulation results reveal that the DPBSC achieves better performance in terms of the saved-rebroadcast, the average packet drop fraction, the average number of collisions and average end-to-end delay at expense of the throughput, which is respectively compared with the blind flooding and fixed probabilistic flooding applied at the routing layer while IEEE 802.11 at the MAC layer.

  14. Scheduling Broadcasts in a Network of Timelines

    KAUST Repository

    Manzoor, Emaad A.

    2015-05-12

    Broadcasts and timelines are the primary mechanism of information exchange in online social platforms today. Services like Facebook, Twitter and Instagram have enabled ordinary people to reach large audiences spanning cultures and countries, while their massive popularity has created increasingly competitive marketplaces of attention. Timing broadcasts to capture the attention of such geographically diverse audiences has sparked interest from many startups and social marketing gurus. However, formal study is lacking on both the timing and frequency problems. In this thesis, we introduce, motivate and solve the broadcast scheduling problem of specifying the timing and frequency of publishing content to maximise the attention received. We validate and quantify three interacting behavioural phenomena to parametrise social platform users: information overload, bursty circadian rhythms and monotony aversion, which is defined here for the first time. Our analysis of the influence of monotony refutes the common assumption that posts on social network timelines are consumed piecemeal independently. Instead, we reveal that posts are consumed in chunks, which has important consequences for any future work considering human behaviour over social network timelines. Our quantification of monotony aversion is also novel, and has applications to problems in various domains such as recommender list diversification, user satiation and variety-seeking consumer behaviour. Having studied the underlying behavioural phenomena, we link schedules, timelines, attention and behaviour by formalising a timeline information exchange process. Our formulation gives rise to a natural objective function that quantifies the expected collective attention an arrangement of posts on a timeline will receive. We apply this formulation as a case-study on real-data from Twitter, where we estimate behavioural parameters, calculate the attention potential for different scheduling strategies and, using the

  15. Educational Electronic Information Dissemination and Broadcast Services: History, Current Infrastructure and Public Broadcasting Requirements.

    Science.gov (United States)

    Singh, Jai P.; Morgan, Robert P.

    This memorandum describes the results of a study on electronic educational information dissemination and broadcast services in the United States. Included are detailed discussions of the historical development and current infrastructure (both in terms of organization and physical plant) of the following services: educational radio and television…

  16. A novel energy efficient broadcast leader election

    OpenAIRE

    Jacquet, Philippe; Milioris, Dimitrios; Muhlethaler, Paul

    2013-01-01

    International audience; We introduce a new algorithm to achieve a distributed leader election in a broadcast channel that is more efficient than the classic Part-and-Try algorithm. The algorithm has the adavantage of having a reduced overhead $\\log\\log N$ rather than $\\log N$. More importantly the algorithm has the a greatly reduced energy consumption since it requires $O(N^{1/k})$ burst transmissions instead of $O(N/k)$, per election, $k$ being a parameter depending on the physical propertie...

  17. Digital terrestrial television broadcasting technology and system

    CERN Document Server

    2015-01-01

    Now under massive deployment worldwide, digital terrestrial television broadcasting (DTTB) offers one of the most attractive ways to deliver digital TV over the VHF/UHF band. Written by a team of experts for specialists and non-specialists alike, this book serves as a comprehensive guide to DTTB. It covers the fundamentals of channel coding and modulation technologies used in DTTB, as well as receiver technology for synchronization, channel estimation, and equalization. It also covers the recently introduced Chinese DTTB standard, using the SFN network in Hong Kong as an example.

  18. 47 CFR 73.3572 - Processing of TV broadcast, Class A TV broadcast, low power TV, TV translators, and TV booster...

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Processing of TV broadcast, Class A TV broadcast, low power TV, TV translators, and TV booster applications. 73.3572 Section 73.3572... Rules Applicable to All Broadcast Stations § 73.3572 Processing of TV broadcast, Class A TV...

  19. 76 FR 71267 - Standardized and Enhanced Disclosure Requirements for Television Broadcast Licensee Public...

    Science.gov (United States)

    2011-11-17

    ... active dialogue with broadcast licensees regarding broadcast service. Among other things, the public... greater public access. The INC Report also recommended requiring that when broadcasters allow advertisers... Public Interest Obligations; Extension of the Filing Requirement for Children's Television...

  20. Structuring Broadcast Audio for Information Access

    Directory of Open Access Journals (Sweden)

    Jean-Luc Gauvain

    2003-02-01

    Full Text Available One rapidly expanding application area for state-of-the-art speech recognition technology is the automatic processing of broadcast audiovisual data for information access. Since much of the linguistic information is found in the audio channel, speech recognition is a key enabling technology which, when combined with information retrieval techniques, can be used for searching large audiovisual document collections. Audio indexing must take into account the specificities of audio data such as needing to deal with the continuous data stream and an imperfect word transcription. Other important considerations are dealing with language specificities and facilitating language portability. At Laboratoire d′Informatique pour la Mécanique et les Sciences de l′Ingénieur (LIMSI, broadcast news transcription systems have been developed for seven languages: English, French, German, Mandarin, Portuguese, Spanish, and Arabic. The transcription systems have been integrated into prototype demonstrators for several application areas such as audio data mining, structuring audiovisual archives, selective dissemination of information, and topic tracking for media monitoring. As examples, this paper addresses the spoken document retrieval and topic tracking tasks.

  1. Random Access Broadcast: Stability and Throughput Analysis

    CERN Document Server

    Shrader, Brooke

    2007-01-01

    A wireless network in which packets are broadcast to a group of receivers through use of a random access protocol is considered in this work. The relation to previous work on networks of interacting queues is discussed and subsequently, the stability and throughput regions of the system are analyzed and presented. A simple network of two source nodes and two destination nodes is considered first. The broadcast service process is analyzed assuming a channel that allows for packet capture and multipacket reception. In this small network, the stability and throughput regions are observed to coincide. The same problem for a network with N sources and M destinations is considered next. The channel model is simplified in that multipacket reception is no longer permitted. Bounds on the stability region are developed using the concept of stability rank and the throughput region of the system is compared to the bounds. Our results show that as the number of destination nodes increases, the stability and throughput reg...

  2. Implementing Broadcast Encryption Scheme Using Bilinear Map and Group Characteristic

    Institute of Scientific and Technical Information of China (English)

    ZHANG Yichun; LIU Jianbo; JIN Libiao; LI Jianzeng

    2006-01-01

    This paper introduced a novel method for implementing broadcast encryption. Our scheme takes advantages of bilinear map and group characteristic, and shifts most of the storage overhead to the public device instead of storing in the tamper-proof device which is a major problem on current implementation. Furthermore, the broadcast keys in our scheme could be reused periodically resulting in more operational efficiency.

  3. School Broadcasting in the United Kingdom: An Exploratory History

    Science.gov (United States)

    Crook, David

    2007-01-01

    In the United Kingdom, television for schools is 50 years old in 2007. The anniversary provides a reason to undertake an exploratory history of school broadcasting, an area that has received very little attention from historians of British education. The first part of this article examines the origins of school radio broadcasting, focusing…

  4. Broadcast Coded Slotted ALOHA: A Finite Frame Length Analysis

    DEFF Research Database (Denmark)

    Ivanov, Mikhail; Brännström, Frederik; Graell i Amat, Alexandre;

    2016-01-01

    We propose an uncoordinated medium access control (MAC) protocol, called all-to-all broadcast coded slotted ALOHA (B-CSA) for reliable all-to-all broadcast with strict latency constraints. In B-CSA, each user acts as both transmitter and receiver in a half-duplex mode. The half-duplex mode gives...

  5. 76 FR 77999 - Standardizing Program Reporting Requirements for Broadcast Licensees

    Science.gov (United States)

    2011-12-15

    ... the public and broadcasters alike, and the promotion of a dialog between stations and the public they... require broadcasters to air any particular category of programming or mix of programming types. Nor do we... communities.'' 35. We appreciate that NCE licensees have limited resources and that their mix of programming...

  6. The Interval Revocation Scheme for Broadcasting Messages to Stateless Receivers

    NARCIS (Netherlands)

    Zych, A.K.; Petkovic, M.; Jonker, W.

    2007-01-01

    The Broadcast Encryption methods, often referred to as revocation schemes, allow data to be efficiently broadcast to a dynamically changing group of users. A special case is when the receivers are stateless [2,1]. Naor et al. [2] propose the Complete Subset Method (CSM) and the Subset Difference Met

  7. 75 FR 5015 - Television Broadcasting Services; Oklahoma City, OK

    Science.gov (United States)

    2010-02-01

    ... COMMISSION 47 CFR Part 73 Television Broadcasting Services; Oklahoma City, OK AGENCY: Federal Communications... procedures for comments, see 47 CFR 1.415 and 1.420. List of Subjects in 47 CFR Part 73 Television, Television broadcasting. For the reasons discussed in the preamble, the Federal Communications...

  8. Inter-destination media synchronization for TV broadcasts

    NARCIS (Netherlands)

    Mekuria, R.N.

    2011-01-01

    This thesis presents an experimental study to derive requirements for the application of inter-destination media synchronization for TV-broadcasts. It presents a novel measurement system, a set of measurements on real TV broadcasts services and the results of two user experiments involving a total o

  9. 75 FR 52649 - Radio Broadcasting Services; DeBeque, Colorado

    Science.gov (United States)

    2010-08-27

    ... COMMISSION 47 CFR Part 73 . Radio Broadcasting Services; DeBeque, Colorado AGENCY: Federal Communications... Congressional Review Act, see 5 U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. 0 As stated in the preamble, the Federal Communications Commission amends 47 CFR part 73...

  10. 77 FR 25112 - Radio Broadcasting Services; Centerville and Midway, TX

    Science.gov (United States)

    2012-04-27

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Centerville and Midway, TX AGENCY: Federal... filing procedures for comments, see 47 CFR 1.415 and 1.420. List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant Chief, Audio...

  11. Depression Radio Broadcast Dramas in the Canadian History Classroom.

    Science.gov (United States)

    Chilcoat, George W.; And Others

    1990-01-01

    Provides a lesson plan on the Great Depression in which students examine the social, economic, and political events of the period through a study of radio broadcasting. Describes an activity in which students research the era and create a radio broadcast. Outlines activity guidelines, radio language, and evaluation methods. (RW)

  12. 78 FR 73793 - Radio Broadcasting Services; Evart and Ludington, Michigan

    Science.gov (United States)

    2013-12-09

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Evart and Ludington, Michigan AGENCY: Federal... filing procedures for comments, see 47 CFR 1.415 and 1.420. List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant Chief, Audio...

  13. Radio Broadcasting for Adult Nonformal Environmental Education in Botswana.

    Science.gov (United States)

    Nyirenda, Juma E.

    1995-01-01

    Radio broadcasting is used in Botswana to inform, teach, and persuade adults about issues in agriculture, health, wildlife, conservation, and other areas. However, open broadcasting is not an effective nonformal education tool. Active and guided group listening to radio enables discussion and feedback. (SK)

  14. Airborne evaluation/verification of antenna patterns of broadcasting stations

    NARCIS (Netherlands)

    Witvliet, B.A.

    2006-01-01

    and verification of the antenna patterns of broadcasting stations. Although it is intended for governmental institutions and broadcasters it may be also of interest to anyone who wants to evaluate large radiating structures. An airborne measurement to investigate the properties of the structure in a

  15. 47 CFR 15.117 - TV broadcast receivers.

    Science.gov (United States)

    2010-10-01

    ... sound commensurate with their video and audio capabilities when receiving digital television signals. (i... receive over-the-air broadcasts with an antenna because of the Nation's transition to digital broadcasting... that provide for reception of digital television signals. The reference in this section to TV...

  16. 78 FR 12622 - Radio Broadcasting Services; Greenup, IL

    Science.gov (United States)

    2013-02-25

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Greenup, IL AGENCY: Federal Communications Commission... 5 U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. ]...

  17. 77 FR 43216 - Radio Broadcasting Services; Randsburg, CA

    Science.gov (United States)

    2012-07-24

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Randsburg, CA AGENCY: Federal Communications....415 and 1.420. List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. Federal...

  18. 78 FR 266 - Radio Broadcasting Services; Maysville, GA

    Science.gov (United States)

    2013-01-03

    ...-270; RM-11676; DA 12-2024] Radio Broadcasting Services; Maysville, GA AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The Audio Division, at the request of Appalachian Broadcasting... Review Act, see 5 U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Radio, Radio...

  19. 75 FR 71044 - Radio Broadcasting Services; Onekama, MI

    Science.gov (United States)

    2010-11-22

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Onekama, MI AGENCY: Federal Communications Commission... CFR Part 73 Radio, Radio broadcasting. 0 For the reasons discussed in the preamble, the...

  20. 75 FR 76294 - Radio Broadcasting Services; Fairbanks, AK

    Science.gov (United States)

    2010-12-08

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Fairbanks, AK AGENCY: Federal Communications... Review Act, see U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. 0...

  1. 78 FR 25591 - Radio Broadcasting Services; Crownpoint, New Mexico

    Science.gov (United States)

    2013-05-02

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Crownpoint, New Mexico AGENCY: Federal Communications... Act, see U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR part 73 Radio, Radio broadcasting....

  2. 78 FR 12010 - Radio Broadcasting Services; Pearsall, Texas

    Science.gov (United States)

    2013-02-21

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Pearsall, Texas AGENCY: Federal Communications....415 and 1.420. List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. Federal...

  3. 75 FR 52872 - Radio Broadcasting Services; Blythe, CA

    Science.gov (United States)

    2010-08-30

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Blythe, CA AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The Audio Division, at the request of Prescott Valley Radio Broadcasting... Congressional Review Act, see U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Radio, Radio...

  4. 75 FR 13236 - Television Broadcasting Services; Oklahoma City, OK

    Science.gov (United States)

    2010-03-19

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Oklahoma City, OK AGENCY: Federal Communications... broadcasting. 0 For the reasons discussed in the preamble, the Federal Communications Commission amends 47...

  5. 76 FR 66250 - Television Broadcasting Services; Cleveland, OH

    Science.gov (United States)

    2011-10-26

    ... From the Federal Register Online via the Government Publishing Office ] FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Cleveland, OH AGENCY: Federal Communications... CFR 1.415 and 1.420. List of Subjects in 47 CFR Part 73 Television, Television broadcasting....

  6. 76 FR 12292 - Radio Broadcasting Services; Kualapuu, HI

    Science.gov (United States)

    2011-03-07

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Kualapuu, HI AGENCY: Federal Communications Commission..., see U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. For the...

  7. 77 FR 52292 - Radio Broadcasting Services; Greenup, IL

    Science.gov (United States)

    2012-08-29

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Greenup, IL AGENCY: Federal Communications Commission....415 and 1.420. List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. Federal...

  8. 76 FR 36384 - Radio Broadcasting Services; Brackettville, TX

    Science.gov (United States)

    2011-06-22

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Brackettville, TX AGENCY: Federal Communications..., see 5 U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting....

  9. Loops of Spoken Language i Danish Broadcasting Corporation News

    DEFF Research Database (Denmark)

    le Fevre Jakobsen, Bjarne

    2012-01-01

    The tempo of Danish television news broadcasts has changed markedly over the past 40 years, while the language has essentially always been conservative, and remains so today. The development in the tempo of the broadcasts has gone through a number of phases from a newsreader in a rigid structure...

  10. 76 FR 9991 - Television Broadcasting Services; Kalispell, MT

    Science.gov (United States)

    2011-02-23

    ... From the Federal Register Online via the Government Publishing Office ] FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Kalispell, MT AGENCY: Federal Communications... CFR 1.415 and 1.420. List of Subjects in 47 CFR Part 73 Television, Television broadcasting. For...

  11. 77 FR 62481 - Radio Broadcasting Services; Crownpoint, NM

    Science.gov (United States)

    2012-10-15

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Crownpoint, NM AGENCY: Federal Communications....415 and 1.420. List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting. Federal...

  12. 77 FR 76936 - Radio Broadcasting Services; Tignall, GA

    Science.gov (United States)

    2012-12-31

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Tignall, GA AGENCY: Federal Communications Commission..., see U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Radio, Radio broadcasting....

  13. 77 FR 33098 - Unlicensed Operation in the TV Broadcast Band

    Science.gov (United States)

    2012-06-05

    ... COMMISSION 47 CFR Part 15 Unlicensed Operation in the TV Broadcast Band AGENCY: Federal Communications... Memorandum Opinion and Order, in the matter of ``Unlicensed Operation in the TV Broadcast Band Approval... final regulations that are the subject of this correction relate to ``Unlicensed Operation in the...

  14. 76 FR 56657 - Unlicensed Operation in the TV Broadcast Bands

    Science.gov (United States)

    2011-09-14

    ... COMMISSION 47 CFR Parts 0 and 15 Unlicensed Operation in the TV Broadcast Bands AGENCY: Federal... unlicensed use of the TV bands (TV White Space). The information collection requirements were approved on..., In the Matter of ``Unlicensed Operation in the TV Broadcast Bands; Additional Spectrum for...

  15. Adaptive Probabilistic Broadcasting over Dense Wireless Ad Hoc Networks

    Directory of Open Access Journals (Sweden)

    Victor Gau

    2010-01-01

    Full Text Available We propose an idle probability-based broadcasting method, iPro, which employs an adaptive probabilistic mechanism to improve performance of data broadcasting over dense wireless ad hoc networks. In multisource one-hop broadcast scenarios, the modeling and simulation results of the proposed iPro are shown to significantly outperform the standard IEEE 802.11 under saturated condition. Moreover, the results also show that without estimating the number of competing nodes and changing the contention window size, the performance of the proposed iPro can still approach the theoretical bound. We further apply iPro to multihop broadcasting scenarios, and the experiment results show that within the same elapsed time after the broadcasting, the proposed iPro has significantly higher Packet-Delivery Ratios (PDR than traditional methods.

  16. Research on the Safe Broadcasting of Television Program

    Directory of Open Access Journals (Sweden)

    Song Jin Bao

    2016-01-01

    Full Text Available The existing way of broadcasting and television monitoring has a lot of problems in China. On the basis of the signal technical indicators monitoring in the present broadcasting and television monitoring system, this paper further extends the function of the monitoring network in order to broaden the services of monitoring business and improve the effect and efficiency of monitoring work. The problem of identifying video content and channel in television and related electronic media is conquered at a low cost implementation way and the flexible technology mechanism. The coverage for video content and identification of the channel is expanded. The informative broadcast entries are generated after a series of video processing. The value of the numerous broadcast data is deeply excavated by using big data processing in order to realize a comprehensive, objective and accurate information monitoring for the safe broadcasting of television program.

  17. Performance of Superposition Coded Broadcast/Unicast Service Overlay System

    Science.gov (United States)

    Yoon, Seokhyun; Kim, Donghee

    The system level performance of a superposition coded broadcast/unicast service overlay system is considered. Cellular network for unicast service only is considered as interference limited system, where increasing the transmission power does not help improve the network throughput especially when the frequency reuse factor is close to 1. In such cases, the amount of power that does not contribute to improving the throughput can be considered as “unused.” This situation motivates us to use the unused power for broadcast services, which can be efficiently provided in OFDM based single frequency networks as in digital multimedia broadcast systems. In this paper, we investigate the performance of such a broadcast/unicast overlay system in which a single frequency broadcast service is superimposed over a unicast cellular service. Alternative service multiplexing using FDM/TDM is also considered for comparison.

  18. AHBP: An Efficient Broadcast Protocol for Mobile Ad Hoc Networks

    Institute of Scientific and Technical Information of China (English)

    彭伟; 卢锡城

    2001-01-01

    Broadcast is an important operation in many network protocols. It is utilized to discover routes to unknown nodes in mobile ad hoc networks (MANETs) and is the key factor in scaling on-demand routing protocols to large networks. This paper presents the Ad Hoc Broadcast Protocol (AHBP) and its performance is discussed. In the protocol, messages are only rebroadcast by broadcast relay gateways that constitute a connected dominating set of the network. AHBP can efficiently reduce the redundant messages which make flooding-like protocols perform badly in large dense networks. Simulations are conducted to determine the performance characteristics of the protocol. The simulation results have shown excellent reduction of broadcast redundancy with AHBP. It also contributes to a reduced level of broadcast collision and congestion.

  19. Method and apparatus for scheduling broadcasts in social networks

    KAUST Repository

    Manzoor, Emaad Ahmed

    2016-08-25

    A method, apparatus, and computer readable medium are provided for maximizing consumption of broadcasts by a producer. An example method includes receiving selection of a total number of time slots to use for scheduling broadcasts, and receiving information regarding the producer\\'s followers. The example method further 5 includes identifying, by a processor and based on the received information, discount factors associated with the producer\\'s followers, and calculating, by the processor and based on the received information, a predicted number of competitor broadcasts during each time slot of the total number of time slots. Finally, the example method includes determining, by the processor and based on the discount factors and the predicted 10 number of competitor broadcasts during each time slot, a number of broadcasts for the producer to transmit in each time slot of the total number of time slots.

  20. Efficient broadcast on random geometric graphs

    Energy Technology Data Exchange (ETDEWEB)

    Bradonjic, Milan [Los Alamos National Laboratory; Elsasser, Robert [UNIV OF PADERBORN; Friedrich, Tobias [INTERNATIONAL COMPUTER SCI.; Sauerwald, Thomas [INTERNATIONAL COMPUTER SCI.

    2009-01-01

    A Randon Geometric Graph (RGG) is constructed by distributing n nodes uniformly at random in the unit square and connecting two nodes if their Euclidean distance is at most r, for some prescribed r. They analyze the following randomized broadcast algorithm on RGGs. At the beginning, there is only one informed node. Then in each round, each informed node chooses a neighbor uniformly at random and informs it. They prove that this algorithm informs every node in the largest component of a RGG in {Omicron}({radical}n/r) rounds with high probability. This holds for any value of r larger than the critical value for the emergence of a giant component. In particular, the result implies that the diameter of the giant component is {Theta}({radical}n/r).

  1. Energy Efficiency Optimization for MIMO Broadcasting Channels

    CERN Document Server

    Xu, Jie

    2012-01-01

    Optimizing the energy efficiency (EE) for the MIMO broadcasting channels (BC) is addressed in this paper, taking into account the transmit independent power which is related to the active transmit antenna number. A new optimization framework is proposed, in which transmit covariance optimization under fixed active transmit antenna sets is first performed and active transmit antenna selection (ATAS) is utilized then. To optimize the EE under a fixed transmit antenna set, we propose an energy efficient iterative waterfilling scheme according to the block-coordinate ascent algorithm, through transforming the problem into a concave fractional optimization via uplink-downlink duality. It is proved that the proposed scheme converges to the global optimality. After that, ATAS is employed to determine the active transmit antenna set and to turn off the rest inactive antennas. ATAS can balance the active transmit antenna number related EE gain with higher capacity gain and the EE loss with more transmit independent po...

  2. User innovation in public service broadcasts

    DEFF Research Database (Denmark)

    Khajeheian, Datis; Tadayoni, Reza

    2016-01-01

    This research aims to understand how public service media can encourage media entrepreneurship in the society to enrich user innovations as a source of ideas, products, contents, talent and creativity. The assumption is that media entrepreneurs turn users into sources of external creativity...... and develop user innovations into professional content. This study follows a qualitative approach with a document study of Denmark's public service broadcast and two interviews. Findings indicate that the commitment to quality and professional content prevents managers of PSBs from outsourcing...... their production to media entrepreneurs, but they trust large media companies as external producers. This research contributes to the field by proposing that public service media can foster media entrepreneurship in a society indirectly and by creating demand for external sources of creativity. Large media...

  3. Secrecy Capacity Region of Fading Broadcast Channels

    CERN Document Server

    Liang, Yingbin; Shamai, Shlomo

    2007-01-01

    The fading broadcast channel with confidential messages (BCC) is investigated, where a source node has common information for two receivers (receivers 1 and 2), and has confidential information intended only for receiver 1. The confidential information needs to be kept as secret as possible from receiver 2. The channel state information (CSI) is assumed to be known at both the transmitter and the receivers. The secrecy capacity region is first established for the parallel Gaussian BCC, and the optimal source power allocations that achieve the boundary of the secrecy capacity region are derived. In particular, the secrecy capacity region is established for the Gaussian case of the Csiszar-Korner BCC model. The secrecy capacity results are then applied to give the ergodic secrecy capacity region for the fading BCC.

  4. A direct broadcast satellite-audio experiment

    Science.gov (United States)

    Vaisnys, Arvydas; Abbe, Brian; Motamedi, Masoud

    1992-03-01

    System studies have been carried out over the past three years at the Jet Propulsion Laboratory (JPL) on digital audio broadcasting (DAB) via satellite. The thrust of the work to date has been on designing power and bandwidth efficient systems capable of providing reliable service to fixed, mobile, and portable radios. It is very difficult to predict performance in an environment which produces random periods of signal blockage, such as encountered in mobile reception where a vehicle can quickly move from one type of terrain to another. For this reason, some signal blockage mitigation techniques were built into an experimental DAB system and a satellite experiment was conducted to obtain both qualitative and quantitative measures of performance in a range of reception environments. This paper presents results from the experiment and some conclusions on the effectiveness of these blockage mitigation techniques.

  5. Broadcasting a message in a parallel computer

    Energy Technology Data Exchange (ETDEWEB)

    Archer, Charles J; Faraj, Daniel A

    2014-11-18

    Methods, systems, and products are disclosed for broadcasting a message in a parallel computer that includes: transmitting, by the logical root to all of the nodes directly connected to the logical root, a message; and for each node except the logical root: receiving the message; if that node is the physical root, then transmitting the message to all of the child nodes except the child node from which the message was received; if that node received the message from a parent node and if that node is not a leaf node, then transmitting the message to all of the child nodes; and if that node received the message from a child node and if that node is not the physical root, then transmitting the message to all of the child nodes except the child node from which the message was received and transmitting the message to the parent node.

  6. Broadcast encryption schemes based on RSA

    Institute of Scientific and Technical Information of China (English)

    MU Ning-bo; HU Yu-pu; OU Hai-wen

    2009-01-01

    Three broadcast schemes for small receiver set using the property of RSA modulus are presented. They can solve the problem of data redundancy when the size of receiver set is small. In the proposed schemes, the center uses one key to encrypt the message and can revoke authorization conveniently. Every authorized user only needs to store one decryption key of a constant size. Among these three schemes, the first one has indistinguishability against adaptive chosen ciphertext attack (IND-CCA2) secure, and any collusion of authorized users cannot produce a new decryption key but the sizes of encryption modulus and ciphertext are linear in the number of receivers. In the second scheme, the size of ciphertext is half of the first one and any two authorized users can produce a new decryption key, but the center can identify them using the traitor tracing algorithm. The third one is the most efficient but the center cannot identify the traitors exactly.

  7. TV Broadcast Efficiency in 5G Networks from Subscriber Prospective

    KAUST Repository

    Lau, Chun Pong

    2015-12-06

    The flexibility of radio access network facilitated by 5G networks opens the gateway of deploying dynamic strategies for broadcasting TV channels in an efficient way. Currently, spectrum efficiency and bandwidth efficiency are the two common metrics measuring the efficiency of a system. These metrics assess the net bitrate for a unit of spectrum bandwidth. However, there is a lack of measurement, quantifying the effectiveness of a broadcasting strategy from the user perspective. In this paper, we introduce a novel measurement approach, called broadcast efficiency which considers the mobile user as a main reference. Broadcast efficiency is calculated as the number of served audiences per unit of radio resource. From numerical analysis, we show that broadcasting unpopular TV channels dramatically decreases the broadcast efficiency. This finding is evaluated by employing multiple distributions on the size of audience among TV channels. Furthermore, by conducting a real-life simulation, we discover that a high broadcast efficiency may result in a low percentage of served audiences if the audiences of TV channels are quite evenly distributed.

  8. Metadata in Chaos: how researchers tag radio broadcasts

    DEFF Research Database (Denmark)

    Lykke, Marianne; Lund, Haakon; Skov, Mette

    2015-01-01

    CHAOS (Cultural Heritage Archive Open System) provides streaming access to more than 500,000 broadcasts by the Danish Broadcast Corporation from 1931 and onwards. The archive is part of the LARM project with the purpose of enabling researchers to search, annotate, and interact with recordings....... To optimally support the researchers a user-centred approach was taken to develop the platform and related metadata scheme. Based on the requirements a three level metadata scheme was developed: (1) core archival metadata, (2) LARM metadata, and (3) project-specific metadata. The paper analyses how researchers.......fm’s strength in providing streaming access to a large, shared corpus of broadcasts....

  9. DMT of weighted Parallel Channels: Application to Broadcast Channel

    CERN Document Server

    Mroueh, Lina; Othman, Ghaya Rekaya-Ben; Belfiore, Jean-Claude

    2008-01-01

    In a broadcast channel with random packet arrival and transmission queues, the stability of the system is achieved by maximizing a weighted sum rate capacity with suitable weights that depend on the queue size. The weighted sum rate capacity using Dirty Paper Coding (DPC) and Zero Forcing (ZF) is asymptotically equivalent to the weighted sum capacity over parallel single-channels. In this paper, we study the Diversity Multiplexing Tradeoff (DMT) of the fading broadcast channel under a fixed weighted sum rate capacity constraint. The DMT of both identical and different parallel weighted MISO channels is first derived. Finally, we deduce the DMT of a broadcast channel using DPC and ZF precoders.

  10. National association of broadcasters engineering handbook NAB engineering handbook

    CERN Document Server

    Jones, Graham A; Osenkowsky, Thomas G; Williams, Edmund A

    2013-01-01

    The NAB Engineering Handbook provides detailed information on virtually every aspect of the broadcast chain, from news gathering, program production and postproduction through master control and distribution links to transmission, antennas, RF propagation, cable and satellite. Hot topics covered include HD Radio, HDTV, 2 GHz broadcast auxiliary services, EAS, workflow, metadata, digital asset management, advanced video and audio compression, audio and video over IP, and Internet broadcasting. A wide range of related topics that engineers and managers need to understand are also covered, includ

  11. Direct broadcast of a sporting event as televisual cultural form

    Directory of Open Access Journals (Sweden)

    Jože Vogrinc

    2012-07-01

    Full Text Available Direct TV broadcasting of sport events is undoubtedly the focal point of interest of sport fans in sports media as well as of sponsors and investors responsible for the global mediatisation of popular sports. In this article, the centrality of direct TV broadcasts in the televisual coverage of sports, as well as in the presence of sports in new media in general is explained in the context of the impact of the mediatisation of sports upon cultural forms of TV coverage of sports. The complexity of these forms and its main features (the role of the commentator, the rules of editing, dramatisation and narrativisation in direct broadcasts are analysed.

  12. Report of survey research of ways of using second generation practical broadcasting satellites

    Science.gov (United States)

    1982-01-01

    The state of development of satellite broadcasting in Japan, was determined was determined and recommendations were made regarding what organizations would use it and what kind of results could be forthcoming. The primary use at this stage is for television broadcasting, and the secondary use is for testing new broadcasting methods and for use by Japan's new Broadcasting University.

  13. 47 CFR 73.9001 - Redistribution control of digital television broadcasts.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Redistribution control of digital television... RADIO SERVICES RADIO BROADCAST SERVICES Digital Broadcast Television Redistribution Control § 73.9001 Redistribution control of digital television broadcasts. Licensees of TV broadcast stations may utilize...

  14. 78 FR 67025 - Domestic Requests for Broadcasting Board of Governors Program Materials

    Science.gov (United States)

    2013-11-08

    ... From the Federal Register Online via the Government Publishing Office BROADCASTING BOARD OF GOVERNORS 22 CFR Part 502 Domestic Requests for Broadcasting Board of Governors Program Materials AGENCY: Broadcasting Board of Governors. ACTION: Final rule. SUMMARY: The Broadcasting Board of Governors...

  15. 47 CFR 73.4185 - Political broadcasting and telecasting, the law of.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Political broadcasting and telecasting, the law of. 73.4185 Section 73.4185 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST... broadcasting and telecasting, the law of. (a) See “The Law of Political Broadcasting and...

  16. 76 FR 52632 - Television Broadcasting Services; Panama City, FL

    Science.gov (United States)

    2011-08-23

    ... to experience problems receiving the station's VHF channel 7 digital broadcasts despite two power.... SUPPLEMENTARY INFORMATION: This is a synopsis of the Commission's Notice of Proposed Rule Making, MB Docket...

  17. Surveying woodland raptors by broadcast of conspecific vocalizations

    Science.gov (United States)

    Mosher, J.A.; Fuller, M.R.; Kopeny, M.

    1990-01-01

    We surveyed for raptors in forests on study areas in five of the eastern United States. For Cooper's Hawks (Accipiter cooperi), Red-shouldered Hawks (Buteo lineatus), and Barred Owls (Strix varia) the contact rates obtained by broadcasting taped vocalizations of conspecifics along roads were significantly greater than contact rates obtained by only looking and listening from the roadside. Broad-winged Hawks (B. platypterus) were detected only after their calls were broadcast. Most raptors were detected within 10 min of the beginning of the broadcasts. Red-tailed Hawks (B. jamaicensis) and Goshawks (A. gentilis) nested infrequently on our study areas, and we were unable to increase detections of these species. Generally, point count transects along woodland roads, from which conspecific vocalizations were broadcast, resulted in higher species specific detection rates than when walking, driving continuously, or only looking and listening for raptors at roadside stops.

  18. Low Cost Antennas for Direct Broadcast Satellite Radio

    Science.gov (United States)

    Wu, T. K.; Huang, J.

    1994-01-01

    Two omni-directional and circularly polarized low gain antennas (the crossed drooping dipole and the TM(sub 21) mode circular patch antenna)are developed for direct broadcast satellite radio (DBSR) outdoor mobile terminal applications.

  19. The Educational Project for Media Literacy Using Radio Broadcasting System

    OpenAIRE

    北村, 順生; Kitamura, Yorio

    2009-01-01

    This report outlines the educational project for media literacy using radio broadcasting system. The practical activity to produce a radio program are very effective on the students to cultivate their media literacy.

  20. An interference cancellation strategy for broadcast in hierarchical cell structure

    KAUST Repository

    Yang, Yuli

    2014-12-01

    In this paper, a hierarchical cell structure is considered, where public safety broadcasting is fulfilled in a femtocell located within a macrocell. In the femtocell, also known as local cell, an access point broadcasts to each local node (LN) over an orthogonal frequency sub-band independently. Since the local cell shares the spectrum licensed to the macrocell, a given LN is interfered by transmissions of the macrocell user (MU) in the same sub-band. To improve the broadcast performance in the local cell, a novel scheme is proposed to mitigate the interference from the MU to the LN while achieving diversity gain. For the sake of performance evaluation, ergodic capacity of the proposed scheme is quantified and a corresponding closed-form expression is obtained. By comparing with the traditional scheme that suffers from the MU\\'s interference, numerical results substantiate the advantage of the proposed scheme and provide a useful tool for the broadcast design in hierarchical cell systems.

  1. Broadcast Service Areas, Cable, Published in Not Provided, US Army.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Broadcast Service Areas, Cable dataset as of Not Provided. Data by this publisher are often provided in Not Applicable coordinate system; in a Not Applicable...

  2. Broadcast spawning by Pocillopora species on the Great Barrier Reef.

    Directory of Open Access Journals (Sweden)

    Sebastian Schmidt-Roach

    Full Text Available The coral genus Pocillopora is one of the few to include some species that broadcast spawn gametes and some species that brood larvae, although reports of reproductive mode and timing vary within and among species across their range. Notably, the ubiquitous Pocillopora damicornis has been described as both a brooder and spawner, although evidence of broadcast spawning is rare. Here, we report observations of broadcast-spawning in four species of Pocillopora on the Great Barrier Reef (GBR, including P. damicornis. All species spawned predictably during the early morning, two days following the full moon, and spawning was observed in multiple months over the summer period (November to February. Eggs and sperm were free-spawned concurrently. Eggs were negatively buoyant and contained Symbiodinium. This newfound knowledge on the mode, timing and regularity of broadcast spawning in Pocillopora spp. on the GBR brings us one step closer to elucidating the complex reproductive ecology of these species.

  3. An outer bound for 2-receiver discrete memoryless broadcast channels

    OpenAIRE

    Nair, Chandra

    2008-01-01

    An outer bound to the two-receiver discrete memoryless broadcast channel is presented. We compare it to the known outer bounds and show that the outer bound presented is at least as tight as the existing bounds.

  4. Discussing performance management architecture in public service broadcasting

    DEFF Research Database (Denmark)

    Tambo, Torben; Gabel, Ole Dahl

    2014-01-01

    Purpose: To demonstrate design of Performance Management (PM) processes in highly complex, non-profit, culture-producing organisations specifically the shift from Performance Management Systems (PMS) to Performance Management Architectures (PMA) specifically using Danish Broadcasting Corporation ...

  5. 75 FR 80013 - Radio Broadcasting Services; Jewett, TX

    Science.gov (United States)

    2010-12-21

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Jewett, TX AGENCY: Federal Communications Commission. ACTION: Proposed rule; dismissal. SUMMARY: At the petitioner's request, the Audio Division has...

  6. 76 FR 71909 - Television Broadcasting Services; Montgomery, AL

    Science.gov (United States)

    2011-11-21

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Montgomery, AL AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The Commission grants a petition for rulemaking filed by Channel...

  7. 76 FR 20248 - Television Broadcasting Services; Decatur, IL

    Science.gov (United States)

    2011-04-12

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Decatur, IL AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The Commission grants a petition for rulemaking filed by...

  8. 76 FR 27914 - Television Broadcasting Services; Kalispell, MT

    Science.gov (United States)

    2011-05-13

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Kalispell, MT AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The Commission has before it a Notice of Proposed Rulemaking...

  9. 75 FR 71411 - Radio Broadcasting Services; Silverpeak, NV

    Science.gov (United States)

    2010-11-23

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Silverpeak, NV AGENCY: Federal Communications Commission. ACTION: Proposed rule; dismissal. SUMMARY: The Audio Division dismisses the petition for...

  10. 76 FR 19275 - Television Broadcasting Services; Jackson, MS

    Science.gov (United States)

    2011-04-07

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Jackson, MS AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The Commission grants a petition for rulemaking issued in...

  11. 77 FR 33997 - Television Broadcasting Services; Greenville, NC

    Science.gov (United States)

    2012-06-08

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Greenville, NC AGENCY: Federal Communications Commission. ACTION: Proposed rule. SUMMARY: The Commission has before it a petition for rulemaking filed...

  12. 75 FR 81190 - Television Broadcasting Services; Yuma, AZ

    Science.gov (United States)

    2010-12-27

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Yuma, AZ AGENCY: Federal Communications Commission. ACTION: Dismissal. SUMMARY: The Commission dismisses the petition for rulemaking filed by...

  13. 76 FR 79113 - Radio Broadcasting Services; Bastrop, LA

    Science.gov (United States)

    2011-12-21

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Bastrop, LA AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The Audio Division, at the request of Kenneth W. Diebel...

  14. 76 FR 33656 - Television Broadcasting Services; Nashville, TN

    Science.gov (United States)

    2011-06-09

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Nashville, TN AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The Commission grants a petition for rulemaking filed by...

  15. 78 FR 75306 - Television Broadcasting Services; Birmingham, Alabama

    Science.gov (United States)

    2013-12-11

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Birmingham, Alabama AGENCY: Federal Communications Commission. ACTION: Proposed rule. SUMMARY: The Commission has before it a petition for...

  16. 76 FR 43933 - Radio Broadcasting Services; Markham, TX

    Science.gov (United States)

    2011-07-22

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Markham, TX AGENCY: Federal Communications Commission. ACTION: Final rule; denial of petition for reconsideration. SUMMARY: The Audio Division has denied...

  17. 76 FR 18497 - Television Broadcasting Services; Augusta, GA

    Science.gov (United States)

    2011-04-04

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Augusta, GA AGENCY: Federal Communications Commission. ACTION: Proposed rule. SUMMARY: The Commission has before it a petition for rulemaking filed...

  18. 77 FR 2242 - Radio Broadcasting Services; Pike Road, AL

    Science.gov (United States)

    2012-01-17

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Pike Road, AL AGENCY: Federal Communications Commission. ACTION: Proposed rule. SUMMARY: This document requests comments on a petition for rule...

  19. How we use online broadcasting - Web TV - for community engagement

    Science.gov (United States)

    Allison, M. L.; Conway, F. M.; Matti, J.; Palmer, R.

    2013-12-01

    The Arizona Geological Survey uses online broadcasting (Webcast or 'Web TV') to help fulfill our statutory mission to 'Inform, advise and assist the public in matters concerning the geological processes, materials and landscapes and the development and use of the mineral resources of this state.' We launched a monthly online broadcast called 'Arizona Mining Review' via Livestream, a low-cost or free video streaming service. The show provides news, interviews, and discussions about mining and mineral resources topics of interest in Arizona, the nation's second largest non-fuel mining state. The costs to set up and broadcast are minor. Interviews with local guests are held in a corner of the AZGS conference room with easy chairs and a couch; long-distance interviews are held via Skype. The broadcast originates from a desktop computer with a webcam, a $60 microphone, three sets of earbud headphones and a powered amplifier. During broadcasts, we supplement interview footage with slides, photos, or video clips that we have or are provided by guests. Initial broadcasts were live; recordings of these were later uploaded to our YouTube channel. Because scheduling and executing a live Internet broadcast is stressful and demanding for both the production team and guests, we recently elected to record and produce episodes prior to broadcasting them. This allows us more control over supplementary materials used during the broadcast; it also permits us to record the broadcast using a high-definition digital video camera that cannot be used for streaming video. In addition to the Arizona Mining Review, we record conferences and workshops and special presentations on topical issues. A video on the recently discovered Little Chino fault has drawn over 3,000 views. Our latest presentations are short 1-2 minute 'video abstracts' delivered by authors of new publications released by the Survey. These include maps and graphics from the reports to help illustrate the topics and their

  20. Capacity Comparison of CDMA and TDMA in Vector Broadcast Channel

    Institute of Scientific and Technical Information of China (English)

    ZHAO Shao-gang; XIAO Zhen-grong; WU Wei-ling

    2004-01-01

    The sum-rate capacity of CDMA and TDMA in vector broadcast channel is researched. An upper bound of sum-rate capacity in CDMA system and a lower bound of sum-rate capacity in TDMA system are derived respectively. According to these two bounds, the ratio of the two bounds at most can achieve min(M,K). Here M is the antenna number of the transmitter and K is the number of the user in this vector broadcast channel.

  1. Transmission techniques for emergent multicast and broadcast systems

    CERN Document Server

    da Silva, Mario Marques; Dinis, Rui; Souto, Nuno; Silva, Joao Carlos

    2010-01-01

    Describing efficient transmission schemes for broadband wireless systems, Transmission Techniques for Emergent Multicast and Broadcast Systems examines advances in transmission techniques and receiver designs capable of supporting the emergent wireless needs for multimedia broadcast and multicast service (MBMS) requirements. It summarizes the research and development taking place in wireless communications for multimedia MBMS and addresses the means to improved spectral efficiency to allow for increased user bit rate, as well as increased capacity of the digital cellular radio network.The text

  2. Unsupervised Speaker Change Detection for Broadcast News Segmentation

    DEFF Research Database (Denmark)

    Jørgensen, Kasper Winther; Mølgaard, Lasse Lohilahti; Hansen, Lars Kai

    2006-01-01

    This paper presents a speaker change detection system for news broadcast segmentation based on a vector quantization (VQ) approach. The system does not make any assumption about the number of speakers or speaker identity. The system uses mel frequency cepstral coefficients and change detection is...... significant losses in the detection of correct changes. We furthermore evaluate the generalizability of the approach by testing the complete system on an independent set of broadcasts, including a channel not present in the training set....

  3. Quasi serializable concurrency control in mobile broadcast environments

    Institute of Scientific and Technical Information of China (English)

    Dang Depeng; Liu Yunsheng

    2007-01-01

    The problem of maintaining data consistency in mobile broadcast environments is researched.Quasi serializability is formally defined and analyzed at first.It was shown that quasi serializability is less stringent than serializability when database consistency is maintained for transactions.Then,corresponding concurrency control protocol that supports both update transactions and read-only transactions is outlined for mobile broadcast environments.Finally,the simulation results confirmed that the proposed protocol could improve the response time significantly.

  4. Broadcasted Location-Aware Data Cache for Vehicular Application

    Directory of Open Access Journals (Sweden)

    Fukuda Akira

    2007-01-01

    Full Text Available There has been increasing interest in the exploitation of advances in information technology, for example, mobile computing and wireless communications in ITS (intelligent transport systems. Classes of applications that can benefit from such an infrastructure include traffic information, roadside businesses, weather reports, entertainment, and so on. There are several wireless communication methods currently available that can be utilized for vehicular applications, such as cellular phone networks, DSRC (dedicated short-range communication, and digital broadcasting. While a cellular phone network is relatively slow and a DSRC has a very small communication area, one-segment digital terrestrial broadcasting service was launched in Japan in 2006, high-performance digital broadcasting for mobile hosts has been available recently. However, broadcast delivery methods have the drawback that clients need to wait for the required data items to appear on the broadcast channel. In this paper, we propose a new cache system to effectively prefetch and replace broadcast data using "scope" (an available area of location-dependent data and "mobility specification" (a schedule according to the direction in which a mobile host moves. We numerically evaluate the cache system on the model close to the traffic road environment, and implement the emulation system to evaluate this location-aware data delivery method for a concrete vehicular application that delivers geographic road map data to a car navigation system.

  5. Broadcasted Location-Aware Data Cache for Vehicular Application

    Directory of Open Access Journals (Sweden)

    Kenya Sato

    2007-05-01

    Full Text Available There has been increasing interest in the exploitation of advances in information technology, for example, mobile computing and wireless communications in ITS (intelligent transport systems. Classes of applications that can benefit from such an infrastructure include traffic information, roadside businesses, weather reports, entertainment, and so on. There are several wireless communication methods currently available that can be utilized for vehicular applications, such as cellular phone networks, DSRC (dedicated short-range communication, and digital broadcasting. While a cellular phone network is relatively slow and a DSRC has a very small communication area, one-segment digital terrestrial broadcasting service was launched in Japan in 2006, high-performance digital broadcasting for mobile hosts has been available recently. However, broadcast delivery methods have the drawback that clients need to wait for the required data items to appear on the broadcast channel. In this paper, we propose a new cache system to effectively prefetch and replace broadcast data using “scope” (an available area of location-dependent data and “mobility specification” (a schedule according to the direction in which a mobile host moves. We numerically evaluate the cache system on the model close to the traffic road environment, and implement the emulation system to evaluate this location-aware data delivery method for a concrete vehicular application that delivers geographic road map data to a car navigation system.

  6. Report on Self-Regulation by the Broadcasting and Advertising Industries for the Elimination of Sex-Role Stereotyping in the Broadcast Media.

    Science.gov (United States)

    Canadian Radio-Television and Telecommunications Commission, Ottawa (Ontario).

    The Task Force on Sex-Role Stereotyping was established in 1979 by the Canadian Radio-Television and Telecommunications Commission (CRTC). Comprised of members of the broadcasting industry, the task force included the Canadian Association of Broadcasters (CAB), the advertising industry, the Canadian Broadcasting Corporation (CBC), public members,…

  7. Transmitter microdischarges in communications and broadcast Satellites

    Science.gov (United States)

    Briskman, Robert D.; Kaliski, Michael A. R.

    2016-09-01

    Most commercial communications and broadcast satellites operating at microwave radio frequencies use traveling wave tube amplifiers (TWTAs) as high power transmitters. Since TWTAs work at high voltages, it is not uncommon to experience micro-discharges, especially early in life. This observation led to the introduction of an autonomous restart function in the companion high voltage power supply (the electronic power conditioner or EPC) of the TWTA as a safety feature. A microdischarge with enough energy above a threshold would lead to a momentary removal of high voltages, followed by an automatic restart, which is usually sufficient to allow the microdischarge event to clear with minimal loss of RF transmission. In most cases the energy involved in the microdischarge is low enough that the removal of high voltages is not required and the event may go undetected. However, an unusual signature was first noted in early 1997 on a Ku-band satellite transmitter, where the characteristics of the microdischarge event were such that the control anode voltage dropped below nominal and typically recovered over a 20 min period. Such microdischarge events became known as the "20 min Effect" which has since been observed over subsequent years on other Ku-band TWTAs, as well as on Ka-band and S-band satellite TWTA transmitters in numerous satellites. This paper summarizes the in-orbit data on such microdischarges as well as the believed cause. In addition, the paper includes results from three S-band TWTAs which have operated on life test for many years. Due to ease of their monitoring instrumentation as contrast to monitoring microdischarges on orbiting operational satellites via telemetry, new data have been accumulated on this effect. The data substantiate the previous findings that microdischarges do not significantly affect satellite operation or their transmissions nor diminish the TWTAs performance, including long lifetime.

  8. SURVEI PENANGANAN BROADCAST STORM PROBLEM PADA PROTOKOL ROUTING AODV DI MANET

    Directory of Open Access Journals (Sweden)

    Indera Zainul Muttaqien

    2015-07-01

    Full Text Available Komunikasi multi-hop pada lingkungan MANET dapat melibatkan broadcast paket dalam proses route discovery. Protokol routing pada MANET akan melakukan broadcast paket RREQ dan menjalarkannya ke node tujuan secepat dan seefisien mungkin, dimana paket RREQ dari rute yang optimal adalah paket RREQ yang terlebih dahulu sampai ke tujuan. Aktifitas broadcast yang tidak terkontrol dapat menyebabkan suatu kondisi yang disebut broadcast storm problem. Broadcast storm problem dapat berdampak pada terganggunya kinerja dari protokol routing akibat adanya packet redundancy, contention, dan collision. Broadcast storm problem dapat ditangani dengan membatasi jumlah node yang dapat melakukan broadcast. Tujuan utama dari pembuatan makalah ini adalah merangkum beberapa mekanisme terbaru yang telah diakukan oleh para peneliti untuk menangani broadcast storm problem. Kami juga menyajikan perbandingan dari mekanisme tersebut berdasarkan karakteristik dari mekanisme ditinjau dari kesesuaian dengan beberapa skema penanganan broadcast storm problem yang diajukan oleh peneliti sebelumnya, kebutuhan informasi tertentu antar node, lingkungan uji coba dan apakah mekanisme ini dapat diterapkan pada protokol routing lainnya.

  9. Study on Android BroadcastReceiver Registration Method%Android中的BroadcastReceiver注册方式研究

    Institute of Scientific and Technical Information of China (English)

    鲁晓天; 李永全

    2015-01-01

    在Android整个系统中,Broadcast作为一种机制,在应用程序之间传输信息。而BroadcastReceiver就是对发送出来的Broadcast进行过滤接受并响应的一类组件,也叫作广播接收器,是Android的四大基本组件之一。不过目前对Broadcast-Receiver进行的介绍不是很多,通过对广播接收器的生命周期,广播类型,注册方式等方面进行介绍,并通过两个实例使读者对广播接收器的注册方式有进一步的了解,对两种注册方式有更直面的认识,明白动态注册和静态注册之间的差异和优缺点,对两种基本的注册方法的使用流程更加清晰。%In the Android Broadcast in the whole system, as a mechanism, the transmission of information between applications. A class of component and BroadcastReceiver is to send out the Broadcast filter to accept and response, also called a broadcast re⁃ceiver, is one of four basic components of Android. But at present on the BroadcastReceiver presentation is not very large, based on the life cycle of the broadcast receiver, broadcast type, registration mode are introduced, and the broadcast receiver register way to further the understanding of the reader through two examples, there are more direct understanding of two registration mode, understand the difference between the dynamic registration and static registration and the advantages and disadvantages, on two kinds of basic registration method using process more clear.

  10. Digital terrestrial broadcasting receiver in the U.K; Eikoku chijoha digital hoso jushinki

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Digital terrestrial broadcasting is broadcasted in parallel with existing UHF analog broadcasting, whereas each of allocated channel frequencies can transmit five to six programs simultaneously. Each home can receive a number of programs with the existing antenna without a need of installing a new satellite antenna or cable. Among the countries of the world running forward to digitization of broadcasting all at once, the U.K. develops advancing movements and leads the world by starting the digital terrestrial broadcasting. In addition to the digitized broadcasting of conventional analog broadcasting programs, the `Ondigitals` (broadcasting operators) have started newly the pay broadcasting. Toshiba has been selected as one of the six developers and manufacturers of digital terrestrial broadcasting receivers, and has developed the digital terrestrial broadcasting receiver DTB2000. For the modulation system, the orthogonal frequency division multiplex (OFDM) was chosen as a system being strong against ghost and most suitable for digital terrestrial broadcasting. In addition, the receiver is equipped with software download function by using the broadcasting waves, and the common interface being the communication specification specified in the DVB (digital video broadcasting) to provide future function expandability. (translated by NEDO)

  11. A Broadcasting Scheme for Message Dissemination in VANET

    Directory of Open Access Journals (Sweden)

    Ravindra J. Makwana

    2015-02-01

    Full Text Available Vehicular Ad hoc Networks [VANET] is one of the fastest emerging technologies for research as there are many issues and challenges to be addressed by the researchers before the technology becomes commercialized. Vehicular communication systems developed largely by the growing interest in intelligent transportation systems [ITS]. Cooperative driving can improve safety and efficiency by enabling vehicles to exchange emergency messages to each other in the neighborhood and to assist driver in making proper decision to avoid vehicle collisions and congestion. Broadcast transmission is usually used for disseminating safety related information among vehicles. Message Broadcast over wireless networks poses many challenges due to link unreliability, hidden terminal, message redundancy, and broadcast storm, etc., which greatly degrade the network performance. In most of the emergency situations, there is less time to make a handshake with other nodes in the networks, as the emergency message is to be delivered fast and efficient. Broadcasting information is usually very costly and without limiting techniques this will result in serious data redundancy, contention and collisions. This work focuses on Broadcasting Scheme for Message Dissemination.

  12. Transmission Redundancy Elimination in MANETs for Effective Broadcasting

    Directory of Open Access Journals (Sweden)

    Anand Nayyar

    2012-11-01

    Full Text Available In Mobile Ad-hoc Network (MANETs one of the most basic fundamental operations is broadcasting. Broadcasting is operated with flooding which leads to the problem such as transmission redundancy and packet collision. This requires a lot of energy resource of the node. The flooding algorithm provokes a more number of unnecessary packet rebroadcasts, wasting allocated bandwidth, causing contention and packet collision. There are some efficient flooding algorithms existing to tackle the redundancy problem. The earlier proposed algorithms require either maintaining 2-hop neighbor information or have to select subset of nodes. In this project, the algorithm proposed is used at the receiver end. Each node, receiving a broadcast packet, will broadcast the cut message along with the packet identity and the path information to all other connected nodes. Unlike the most existing techniques, each node tracks the neighboring nodes information from which redundant messages are received. This proposed algorithm achieves local optimality by breaking the cycles between them. When each the node receives the packet, the cut messages are broadcasted to minimize the cycle redundancy. The receiver node is involved in the process of decision making and so the decision is taken by the receiver node. The proposed system would be capable of easily included with the existing system as the decision is to be taken by the receiver node. The proposed system is an improved version of the existing algorithm, which is more graceful in interpreting existing protocols.

  13. Scalable broadcast with network coding in heterogeneous networks

    Institute of Scientific and Technical Information of China (English)

    SI Jing-jing; ZHUANG Bo-jin; CAI An-ni

    2010-01-01

    This article studies the scalable broadcast scheme realized with the joint application of layered source coding,unequal error protection(UEP)and random network coding from the theoretical point of view.The success probability for any non-source node in a heterogeneous network to recover the most important layers of the source data is deduced.This probability proves that in this broadcast scheme every non-source node with enough capacity can always recover the source data partially or entirely as long as the finite field size is sufficiently large.Furthermore,a special construction for the local encoding kernel at the source node is proposed.With this special construction,an increased success probability for partial decoding at any non-source node is achieved,i.e.,the partial decodability offered by the scalable broadcast scheme is improved.

  14. Public and Private Activity in Commercial TV Broadcasting

    DEFF Research Database (Denmark)

    Olai Hansen, Bodil; Keiding, Hans

    2006-01-01

    We consider a model of commercial television market, where private broadcasters coexist with a public television broadcaster. Assuming that the public TV station follows a policy of Ramsey pricing whereas the private stations are profit maximizers, we consider the equilibria in this market...... and compare with a situation where the public station is privatized and acts as another private TV broadcaster. A closer scrutiny of the market for commercial television leads to a distinction between target rating points, which are the prime unit of account in TV advertising, and net coverage, which...... is the final goal of advertisers. Working with net coverage as the fundamental concept, we exploit the models of competition between public and private price and quantity in order to show that privatization of the public TV station entails a welfare loss and results in TV advertising becoming more expensive...

  15. Resource allocation for multichannel broadcasting visible light communication

    Science.gov (United States)

    Le, Nam-Tuan; Jang, Yeong Min

    2015-11-01

    Visible light communication (VLC), which offers the possibility of using light sources for both illumination and data communications simultaneously, will be a promising incorporation technique with lighting applications. However, it still remains some challenges especially coverage because of field-of-view limitation. In this paper, we focus on this issue by suggesting a resource allocation scheme for VLC broadcasting system. By using frame synchronization and a network calculus QoS approximation, as well as diversity technology, the proposed VLC architecture and QoS resource allocation for the multichannel-broadcasting MAC (medium access control) protocol can solve the coverage limitation problem and the link switching problem of exhibition service.

  16. Planning, progress and problems in European satellite broadcasting

    Science.gov (United States)

    Chaplin, J.

    An overview is presented of recent developments in the production and deployment of communications satellites for TV program distribution and direct-to-home broadcasting in Europe. Consideration is given to expanding communications satellite programs in France (Telecom 1), the United Kingdom (UNISAT); and West Germany (DFS/POSTSAT). It is pointed out that the development of satellite TV distribution in the USA has contributed to the success of the European programs. Also, the growth of the cable industry is unlikely to affect the momentum already built up in direct broadcasting from high power satellites.

  17. IP MULTICAST GROUP MANAGEMENT FOR BROADCAST LANS DISTRIBUTION

    Institute of Scientific and Technical Information of China (English)

    阿姆贾德

    2001-01-01

    Problems of the current IGMP mechanism were identified, such as unnecessary periodic probing of hosts and leave latency, which wastes bandwidth and cause more traffic and overhead. Alternative mechanism that preserve the IP multicast model but employ join/leave messages to track local group membership for broadcast LANs (shared medium LANs) was proposed in this paper. We describe the implementation requirements of the new mechanism and compare it to existing one, demonstrating that join/leave approach is uniformly superior for the environment of broadcast LANs.

  18. Metadata in Chaos: how researchers tag radio broadcasts

    DEFF Research Database (Denmark)

    Lykke, Marianne; Lund, Haakon; Skov, Mette

    2015-01-01

    is to provide access to broadcasts and provide tools to segment and manage concrete segments of radio broadcasts. Although the assigned metadata are project-specific, they serve as invaluable access points for fellow researchers due to their factual and neutral nature. The researchers particularly stress LARM.fm...... apply the metadata scheme in their research work. The study consists of two studies, a) a qualitative study of subjects and vocabulary of the applied metadata and annotations, and 5 semi-structured interviews about goals for tagging. The findings clearly show that the primary role of LARM.fm...

  19. Asynchronous Broadcast on the Intel SCC using Interrupts

    OpenAIRE

    Petrović, Darko; Shahmirzadi, Omid; Ropars, Thomas; Schiper, André

    2012-01-01

    International audience; This paper focuses on the design of an asynchronous broadcast primitive on the Intel SCC. Our solution is based on OC-Bcast, a state-of-the-art k-ary tree synchronous broadcast algorithm that leverages the parallelism provided by on-chip Remote Memory Accesses to Message Passing Buffers. In the paper, we study the use of parallel inter-core interrupts as a means to implement an efficient asynchronous group communication primitive, and present the userspace library we d...

  20. DRACULA: Dynamic range control for broadcasting and other applications

    Science.gov (United States)

    Gilchrist, N. H. C.

    The BBC has developed a digital processor which is capable of reducing the dynamic range of audio in an unobtrusive manner. It is ideally suited to the task of controlling the level of musical programs. Operating as a self-contained dynamic range controller, the processor is suitable for controlling levels in conventional AM or FM broadcasting, or for applications such as the compression of program material for in-flight entertainment. It can, alternatively, be used to provide a supplementary signal in DAB (digital audio broadcasting) for optional dynamic compression in the receiver.

  1. No-local-broadcasting theorem for multipartite quantum correlations.

    Science.gov (United States)

    Piani, Marco; Horodecki, Paweł; Horodecki, Ryszard

    2008-03-07

    We prove that the correlations present in a multipartite quantum state have an operational quantum character even if the state is unentangled, as long as it does not simply encode a multipartite classical probability distribution. Said quantumness is revealed by the new task of local broadcasting, i.e., of locally sharing preestablished correlations, which is feasible if and only if correlations are stricly classical. Our operational approach leads to natural definitions of measures for quantumness of correlations. It also reproduces the standard no-broadcasting theorem as a special case.

  2. Broadcast, Denial-of-Service, and Secure Communication

    DEFF Research Database (Denmark)

    Vigo, Roberto; Nielson, Flemming; Nielson, Hanne Riis

    2013-01-01

    A main challenge in the design of wireless-based Cyber-Physical Systems consists in balancing the need for security and the effect of broadcast communication with the limited capabilities and reliability of sensor nodes. We present a calculus of broadcasting processes that enables to reason about...... unsolicited messages and lacking of expected communication. Moreover, standard cryptographic mechanisms can be implemented in the calculus via term rewriting. The modelling framework is complemented by an executable specification of the semantics of the calculus in Maude, thereby facilitating solving a number...

  3. On Multihop Broadcast over Adaptively Duty-Cycled Wireless Sensor Networks

    Science.gov (United States)

    Lai, Shouwen; Ravindran, Binoy

    We consider the problem of multihop broadcast over adaptively duty-cycled wireless sensor networks (WSNs) where neighborhood nodes are not simultaneously awake. We present Hybrid-cast, an asynchronous and multihop broadcasting protocol, which can be applied to low duty-cycling or quorum-based duty-cycling schedule where nodes send out a beacon message at the beginning of wakeup slots. Hybrid-cast achieves better tradeoff between broadcast latency and broadcast count compared to previous broadcast solutions. It adopts opportunistic data delivery in order to reduce the broadcast latency. Meanwhile, it reduces redundant transmission via delivery deferring and online forwarder selection. We establish the upper bound of broadcast count and the broadcast latency for a given duty-cycling schedule. We evaluate Hybrid-cast through extensive simulations. The results validate the effectiveness and efficiency of our design.

  4. 76 FR 4078 - Television Broadcasting Services; North Pole and Plattsburgh, NY

    Science.gov (United States)

    2011-01-24

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; North Pole and Plattsburgh, NY AGENCY: Federal... CFR Part 73 Television, Television broadcasting. For the reasons discussed in the preamble,...

  5. Architecture and Design of IP Broadcasting System Using Passive Optical Network

    Science.gov (United States)

    Ikeda, Hiroki; Sugawa, Jun; Ashi, Yoshihiro; Sakamoto, Kenichi

    We propose an IP broadcasting system architecture using passive optical networks (PON) utilizing the optical broadcast links of a PON with a downstream bandwidth allocation algorithm to provide a multi-channel IP broadcasting service to home subscribers on single broadband IP network infrastructures. We introduce the design and adaptation of the optical broadcast links to effectively broadcast video contents to home subscribers. We present a performance analysis that includes the downstream bandwidth utilization efficiency of the broadcast link and the bandwidth control of the IP broadcasting and Internet data. Our analysis and simulation results show that the proposed system can provide 100 HDTV channels to every user over fiber lines. We also propose an IPTV channel selection mechanism in an ONT by selecting a broadcast stream. We developed and evaluated a prototype that can achieve a 15-msec IPTV channel selection speed.

  6. Delayed childbearing.

    Science.gov (United States)

    Francis, H H

    1985-06-01

    In many Western nations, including England and Wales, Sweden, and the US, there is a current trend towards delayed childbearing because of women's pursuit of a career, later marriage, a longer interval between marriage and the 1st birth, and the increasing number of divorcees having children in a 2nd marriage. Wives of men in social classes I and II in England and Wales are, on average, having their 1st child at 27.9 years, 1.6 years later than in 1973, and in social classes IV and V, 1.0 years later than in 1973, at a mean age of 23.7 years. Consequently, the total period fertility rate for British women aged 30-34 years, 35-39 years, and 40 and over increased by 4%, 2%, and 4%, respectively, between 1982-83, in contrast to reductions of 2% and 3%, respectively, in the 15-19 year and 20-24 year age groups, with the 25-29-year-olds remaining static. The average maternal mortality for all parties in England and Wales during 1976-78 was 106/million for adolescents, 70.4/million for 20-24 year-olds, and 1162/million for those aged 40 years and older. The specific obstetric and allied conditions which increase with age are the hypertensive diseases of pregnancy, hemorrhage, pulmonary embolism, abortion, cardiac disease, caesarean section, ruptured uterus, and amniotic fluid embolism. The Swedish Medical Birth Registry of all live births and perinatal deaths since 1973 has shown that the risk of late fetal death is significantly greater in women aged 30-39 years than in those of the same parity and gravidity aged 20-24 years. The risk of giving birth to low birth weight babies preterm and at term and of premature labor are similarly increased. The early neonatal death rate also was increased for primigravidas and nulliparas in the 30-39 year age group but not in parous women. This is, in part, due to the rise in incidence of fetal abnormalities with advancing maternal age because of chromosomal and nonchromosomal anomalies. These also appear to be the cause of the

  7. Performance analysis of long reach colorless wavelength division multiplexed-orthogonal frequency division multiplexing-passive optical network with broadcast capability

    Science.gov (United States)

    Pandey, Gaurav; Goel, Aditya

    2016-07-01

    A colorless wavelength division multiplexed-orthogonal frequency division multiplexing-passive optical network (WDM-OFDM-PON) is presented, which is capable of supporting symmetric 10 Gbps downlink direct detection (DD) OFDM unicast signal, broadcast signal, and uplink on-off keying (OOK) signal up to 60 km that includes both single mode and dispersion compensation fiber. At each optical network unit (ONU), DD has been used to receive downlink unicast and broadcast OFDM data. A delay interferometer (DI) has been used at a central office to achieve 10 Gbps uplink signal transmission over 60 km distance utilizing a reflective semiconductor optical amplifier (bandwidth=1.5 GHz) at the ONU because DI works as a vestigial sideband filter and an optical equalizer. Broadcast channel does not affect the system performance because it generates a limited interference of the order of 0.1 to 0.28 dB to downlink and uplink channels, and this interference is distributed to every ONU. For bit error rate of 10-9, the receiver sensitivity of -24, -23.1, and -20.14 dBm is achieved by simulating downlink OFDM unicast channels, OFDM broadcast channel, and uplink OOK unicast channels, respectively, for a symmetric data rate of 10 Gbps over 60 km.

  8. 76 FR 65192 - Radio Broadcasting Services; AM or FM Proposals To Change the Community of License

    Science.gov (United States)

    2011-10-20

    ... COMMISSION Radio Broadcasting Services; AM or FM Proposals To Change the Community of License AGENCY: Federal... the community of license: Eastern Sierra Broadcasting, Station KCWK, Facility ID 160324, BMP..., BNPH-20110929AGK, from Rotan, TX, to Roscoe, TX; Everglades City Broadcasting Company, Inc.,...

  9. 77 FR 57086 - Radio Broadcasting Services; AM or FM Proposals To Change The Community of License.

    Science.gov (United States)

    2012-09-17

    ... COMMISSION Radio Broadcasting Services; AM or FM Proposals To Change The Community of License. AGENCY..., Facility ID 50554, BMP-20120725AHO, From TILLAMOOK, OR, To NETARTS, OR; BIRACH BROADCASTING CORPORATION... BROADCASTING CORPORATION, Station KPAD, Facility ID 166006, ] BMPH-20111230ABO, From RAWLINS, WY, To...

  10. 78 FR 13670 - Radio Broadcasting Services; AM or FM Proposals To Change the Community of License

    Science.gov (United States)

    2013-02-28

    ... COMMISSION Radio Broadcasting Services; AM or FM Proposals To Change the Community of License AGENCY: Federal..., From UNION GROVE, AL, To TRIANA, AL; REED BROADCASTING, LLC, Station WRAB, Facility ID 2552, BP-20130207ABK, From ARAB, AL, To UNION GROVE, AL; SOUTHERN STONE BROADCASTING, INC., Station WMGZ,...

  11. 78 FR 23565 - Radio Broadcasting Services; AM or FM Proposals To Change the Community of License.

    Science.gov (United States)

    2013-04-19

    ... COMMISSION Radio Broadcasting Services; AM or FM Proposals To Change the Community of License. AGENCY... BROADCASTING, INC., Station KAKS, Facility ID 69858, BPH- 20130318AGJ, From HUNTSVILLE, AR, To GOSHEN, AR; CARROLL COUNTY BROADCASTING, INC., Station KTHS, Facility ID 35668, BP-20130318AGK, From BERRYVILLE,...

  12. 76 FR 49364 - Radio Broadcasting Services; Gearhart, Madras, and Manzanita, OR

    Science.gov (United States)

    2011-08-10

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Gearhart, Madras, and Manzanita, OR AGENCY: Federal... CFR Part 73 Radio, Radio broadcasting. Federal Communications Commission. James D. Bradshaw, Deputy... Broadcasting, L.C., as modified pursuant to the counterproposal of Cumulus Licensing LLC (``Cumulus''),...

  13. 75 FR 51812 - Radio Broadcasting Services; AM or FM Proposals To Change the Community of License

    Science.gov (United States)

    2010-08-23

    ...] [FR Doc No: 2010-20912] FEDERAL COMMUNICATIONS COMMISSION Radio Broadcasting Services; AM or FM... BROADCASTING CORPORATION, Station KWBC, Facility ID 40912, BP-20100712ABU, From NAVASOTA, TX, To COLLEGE..., OR, To ALOHA, OR; IORIO BROADCASTING, INC., Station WNAE-FM, Facility ID 164188,...

  14. 76 FR 50732 - Radio Broadcasting Services; AM or FM Proposals To Change the Community of License

    Science.gov (United States)

    2011-08-16

    ... COMMISSION Radio Broadcasting Services; AM or FM Proposals To Change the Community of License AGENCY: Federal... the community of license: ALELUYA BROADCASTING NETWORK, Station NEW, Facility ID 123270, BMPED..., Facility ID 170991, BPH-20110620AGF, From HAMILTON, TX, To HICO, TX; NORMIN BROADCASTING CO., Station...

  15. 77 FR 24662 - Determination of Reasonable Rates and Terms for Noncommercial Broadcasting

    Science.gov (United States)

    2012-04-25

    ... Religious/Community Noncommercial Radio Station's broadcast of in-band, on-channel, digital radio (``HD... television and radio broadcasting. Chapter 8 of the Copyright Act requires the Copyright Royalty Judges... Public Radio, the Public Broadcasting Service, and noncommercial radio and television stations...

  16. Between Postage Stamps and Digitalization: The Changing Roles of Educational Broadcasting.

    Science.gov (United States)

    Fleisher, Frederic

    1995-01-01

    Provides a broadcasting practitioner's perspective of educational broadcasting in Europe, and how, with data compression, the emergence of more television channels can affect the educationalist and public service broadcasting. Discusses technological development, equal access to education, cultural maintenance, advertising, future outlooks, and…

  17. 77 FR 66743 - Radio Broadcasting Services; Crowell, Knox City, Quanah, and Rule, TX

    Science.gov (United States)

    2012-11-07

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Crowell, Knox City, Quanah, and Rule, TX AGENCY... in 47 CFR Part 73 Radio, Radio broadcasting. Federal Communications Commission. Nazifa Sawez... Communications Commission amends 47 CFR part 73 as follows: PART 73--RADIO BROADCAST SERVICES 0 1. The...

  18. 37 CFR 253.6 - Performance of musical compositions by other public broadcasting entities.

    Science.gov (United States)

    2010-07-01

    ... compositions by other public broadcasting entities. 253.6 Section 253.6 Patents, Trademarks, and Copyrights... CERTAIN COPYRIGHTED WORKS IN CONNECTION WITH NONCOMMERCIAL EDUCATIONAL BROADCASTING § 253.6 Performance of musical compositions by other public broadcasting entities. (a) Scope. This section applies to...

  19. 37 CFR 381.6 - Performance of musical compositions by other public broadcasting entities.

    Science.gov (United States)

    2010-07-01

    ... compositions by other public broadcasting entities. 381.6 Section 381.6 Patents, Trademarks, and Copyrights... COPYRIGHTED WORKS IN CONNECTION WITH NONCOMMERCIAL EDUCATIONAL BROADCASTING § 381.6 Performance of musical compositions by other public broadcasting entities. (a) Scope. This section applies to the performance...

  20. 37 CFR 201.9 - Recordation of agreements between copyright owners and public broadcasting entities.

    Science.gov (United States)

    2010-07-01

    ... between copyright owners and public broadcasting entities. 201.9 Section 201.9 Patents, Trademarks, and... Recordation of agreements between copyright owners and public broadcasting entities. (a) License agreements... published pictorial, graphic, and sculptural works, and one or more public broadcasting entities, and...

  1. 48 CFR 1953.370 - The Broadcasting Board of Governors forms.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 6 2010-10-01 2010-10-01 true The Broadcasting Board of Governors forms. 1953.370 Section 1953.370 Federal Acquisition Regulations System BROADCASTING BOARD OF GOVERNORS CLAUSES AND FORMS FORMS Illustrations of Forms 1953.370 The Broadcasting Board of Governors...

  2. 47 CFR 73.758 - System specifications for digitally modulated emissions in the HF broadcasting service.

    Science.gov (United States)

    2010-10-01

    ... emissions in the HF broadcasting service. 73.758 Section 73.758 Telecommunication FEDERAL COMMUNICATIONS... § 73.758 System specifications for digitally modulated emissions in the HF broadcasting service. (a... digital audio broadcasting and datacasting are authorized. The RF requirements for the DRM system...

  3. 22 CFR 521.39 - Appeal to the Broadcasting Board of Governors Director.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 2 2010-04-01 2010-04-01 true Appeal to the Broadcasting Board of Governors Director. 521.39 Section 521.39 Foreign Relations BROADCASTING BOARD OF GOVERNORS IMPLEMENTATION OF THE PROGRAM FRAUD CIVIL REMEDIES ACT § 521.39 Appeal to the Broadcasting Board of Governors Director. (a)...

  4. 77 FR 22755 - Sunshine Act Meeting; Notice of Meeting of the Broadcasting Board of Governors

    Science.gov (United States)

    2012-04-17

    ... From the Federal Register Online via the Government Publishing Office BROADCASTING BOARD OF GOVERNORS Sunshine Act Meeting; Notice of Meeting of the Broadcasting Board of Governors DATE AND TIME: Friday, April 20, 2012, 10 a.m. PLACE: Office of Cuba Broadcasting, 4201 NW. 77th Ave., Miami, FL...

  5. 32 CFR 150.27 - Recording, photographing, broadcasting, or telecasting of hearings.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false Recording, photographing, broadcasting, or... AND PROCEDURE § 150.27 Recording, photographing, broadcasting, or telecasting of hearings. The recording, photographing, broadcasting, or televising of any session of the Court or other activity...

  6. 47 CFR 73.6016 - Digital Class A TV station protection of TV broadcast stations.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Digital Class A TV station protection of TV... Class A TV station protection of TV broadcast stations. Digital Class A TV stations must protect authorized TV broadcast stations, applications for minor changes in authorized TV broadcast stations filed...

  7. Legal Problems in Broadcasting: Identification and Analysis of Selected Issues.

    Science.gov (United States)

    Toohey, Daniel W.; And Others

    This book is designed as an introduction and reference to broadcast law for commercial and noncommercial station managers and staff, college students of radio and television, and general readers. It is divided into two sections, "Freedom of Expression and Related Issues" and "Business Aspects of Programming." The first section contains seven…

  8. Reinventing public service broadcasting in Europe: prospects, promises and problems

    NARCIS (Netherlands)

    Bardoel, J.L.H.; d'Haenens, L.S.J.

    2008-01-01

    New information technologies, liberalizing policies and rapidly changing societies – from mono- to multicultural – entail serious consequences for the prospects of European public service broadcasters in a network society. The European concept of PSB as a comprehensive and universal service is chall

  9. 75 FR 63431 - Radio Broadcasting Services; Willow Creek, CA

    Science.gov (United States)

    2010-10-15

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Willow Creek, CA AGENCY: Federal Communications... allotment of FM Channel 258A at Willow Creek, California. Petitioner, the auction winner and permittee of Channel 253A, Willow Creek, has submitted an application to specify operation of the station on...

  10. 76 FR 13524 - Radio Broadcasting Services; Willow Creek, CA

    Science.gov (United States)

    2011-03-14

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Willow Creek, CA AGENCY: Federal Communications... FM Channel 258A at Willow Creek, California. Channel 258A can be allotted at Willow Creek, consistent... of FM Allotments under California, is amended by adding Channel 258A at Willow Creek....

  11. The Right of Rectification in Italian Broadcasting Legislation

    Science.gov (United States)

    Esposito, R.; Grassi, A.

    1976-01-01

    Describes a new law which allows people or institutions broadcast time to rectify errors of fact previously aired. Includes history of the legislation, specifications and conditions of the law, the kinds of programs affected, rules adopted by Radiotelevision Italiana, and recent international developments. (LS)

  12. Flexible Broadcasting of Scalable Video Streams in Broadband Wireless System

    Directory of Open Access Journals (Sweden)

    D. Lavanya

    2015-02-01

    Full Text Available This paper presents a novel cross-layer optimization framework to improve the quality of user experience (QOE and energy efficiency of the heterogeneous wireless multimedia broadcast receivers. User grouping is based on the respective UE resolution capabilities and received SNR. A UE capability is determined by the BS at the time of service subscription, when the UE sends its type information, i.e., the number of layers it wants to receive. The UE periodically updated its channel condition to the BS through the uplink channel. This joint optimization is achieved by grouping the users based on their device capabilities and estimated channel conditions experienced by them and broadcasting adaptive content to these groups. The adaptive multimedia content is obtained by using scalable video coding (SVC with optimal source encoding parameters resulted from an innovative cooperative game. Energy saving at user terminals results from using a layer-aware time slicing approach in the transmission stage. Time slicing approach allows discontinuous reception at the UEs, thereby facilitating the UE to turn-off the radio when not receiving data bursts and hence saving energy. A trade-off between energy saving and QOE is observed, and is incorporated in the definition of a utility function of the players in the formulated heterogeneous user composition and physical channel aware game. An adaptive modulation and coding scheme is also optimally incorporated in order to maximize the reception quality of the broadcast receivers, while maximizing the network broadcast capacity.

  13. Bluetooth Broadcasting : How far can we go? An experimental study

    NARCIS (Netherlands)

    Aiello, Marco; Jong, Remko de; Nes, Joel de

    2009-01-01

    Bluetooth is a wireless communication technology to build small networks of devices. It was designed as a cable replacement technology. Given its widespread adoption, especially in mobile devices, new uses are possible today. For instance, one can broadcast messages to nomadic users based on their l

  14. Second Screen Interactions for Automatically Web-Enriched Broadcast Video

    NARCIS (Netherlands)

    Pérez Romero, L.; Traub, M.C.; Leyssen, M.H.R.; Hardman, L.

    2013-01-01

    Including hypermedia in broadcast video combines content formatted for a lean-forward medium (the Web) with a lean-back one (TV) to form a hybrid medium. We identify four challenges for interacting with and experiencing this new medium. We discuss the role a second screen may play in addressing

  15. 75 FR 76293 - Radio Broadcasting Services; Peach Springs, AZ

    Science.gov (United States)

    2010-12-08

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Peach Springs, AZ AGENCY: Federal Communications..., allots FM Channel 281C3 at Peach Springs, Arizona, in order to maintain a first local service at that community. Channel 281C3 can be allotted at Peach Springs, Arizona, in compliance with the...

  16. 75 FR 3694 - Radio Broadcasting Services, Peach Springs, Arizona

    Science.gov (United States)

    2010-01-22

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services, Peach Springs, Arizona AGENCY: Federal Communications... Media Licenses, LLC, proposing the allotment of FM Channel 281C3 at Peach Springs, Arizona. The reference coordinates for Channel 281C3 at Peach Springs are 35-33-46 NL and 113-27-12 WL. DATES:...

  17. 78 FR 25861 - Radio Broadcasting Services; Peach Springs, Arizona

    Science.gov (United States)

    2013-05-03

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Peach Springs, Arizona AGENCY: Federal Communications... Springs, Arizona. (The symbol `` '' will be used to denote a channel reserved as a Tribal Allotment.) Channel 265A can be allotted at Peach Springs, consistent with the minimum distance...

  18. 78 FR 40402 - Radio Broadcasting Services; Roaring Springs, Texas

    Science.gov (United States)

    2013-07-05

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Roaring Springs, Texas AGENCY: Federal Communications... Channel 227A and deletes FM Channel 249A at Roaring Springs, Texas, and allots FM Channel 249C3 and deletes FM Channel 276C3 at Roaring Springs. These allotment changes are part of a rule making and...

  19. 78 FR 61251 - Radio Broadcasting Services; Heber Springs, Arkansas.

    Science.gov (United States)

    2013-10-03

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Heber Springs, Arkansas. AGENCY: Federal... Making filed by Sydney Allison Sugg, proposing the allotment of Channel 270C3 at Heber Springs, Arkansas, as the community's third local service. Channel 270C3 can be allotted to Heber Springs...

  20. China formally issued mobile multimedia broadcasting industry standard

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ October 24, 2006, China SARFT (State Administration of Radio Film and Television) formally issued the China mobile multimedia broadcasting (namely,Mobile TV) industry standard. The standard is a STiMi standard self-developed in China and put into practice from November 1 this year.

  1. Resource development and experiments in automatic SA broadcast news transcription

    CSIR Research Space (South Africa)

    Kamper, H

    2012-05-01

    Full Text Available development purposes: a 20 hour corpus of South African English (SAE) broadcast news, a 109M word corpus of South African newspaper text collected for language modelling purposes, and a 60k word SAE pronunciation dictionary. The development of our system...

  2. Wisconsin Farmers' Use and Understanding of Broadcast News. Research Report.

    Science.gov (United States)

    Kroupa, Eugene A.; Burnett, Claron

    A survey of Wisconsin farmers in four market areas was made to determine their market information requirements, their surveillance of media market reports, and their understanding and use of market news received from the Wisconsin broadcast media. The survey was conducted as a follow-on to a study of the timing, frequency, and completeness of…

  3. Will broadcasters survive in the online and digital domain?

    NARCIS (Netherlands)

    Leurdijk, A.

    2007-01-01

    Digital television and the internet are fundamentally changing media markets. Consumers have access to an increasing amount of news, information and entertainment. In addition to traditional media companies such as publishers and broadcasters new players enter the market as content producers, packag

  4. Empirical evidence for policy in telecommunication, copyright & broadcasting

    NARCIS (Netherlands)

    Poort, J.P.

    2015-01-01

    This dissertation contains nine articles with an empirical focus in copyright, telecommunication, and broadcasting. These articles address different research questions and employ a variety of methodological approaches. They all share an economic foundation and the aim to contribute to evidence based

  5. Will broadcasters survive in the online and digital domain?

    NARCIS (Netherlands)

    Leurdijk, A.

    2007-01-01

    Digital television and the internet are fundamentally changing media markets. Consumers have access to an increasing amount of news, information and entertainment. In addition to traditional media companies such as publishers and broadcasters new players enter the market as content producers,

  6. Ciphertext-Policy Attribute-Based Broadcast Encryption Scheme

    NARCIS (Netherlands)

    Asim, Muhammad; Ibraimi, Luan; Petkovic, Milan

    2011-01-01

    In this work, we design a new attribute-based encryption scheme with the revocation capability. In the proposed schemes, the user (broadcaster) encrypts the data according to an access policy over the set of attributes, and a list of the identities of revoked users. Only recipients who have attribut

  7. 76 FR 68117 - Television Broadcasting Services; Panama City, FL

    Science.gov (United States)

    2011-11-03

    ...-140; RM-11683, DA 11-1735] Television Broadcasting Services; Panama City, FL AGENCY: Federal... Gray Television Licensee, LLC (``Gray''), the licensee of WJHG-TV, channel 7, Panama City, Florida...)(A). List of Subjects in 47 CFR Part 73 Television. Federal Communications Commission. Barbara...

  8. 76 FR 68124 - Television Broadcasting Services; Fond du Lac, WI

    Science.gov (United States)

    2011-11-03

    ... [Federal Register Volume 76, Number 213 (Thursday, November 3, 2011)] [Proposed Rules] [Pages 68124-68125] [FR Doc No: 2011-28452] FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 [MB Docket No. 09-115, RM-11543; DA 11-1502] Television Broadcasting Services; Fond du Lac, WI AGENCY:...

  9. 76 FR 49697 - Television Broadcasting Services; Eau Claire, WI

    Science.gov (United States)

    2011-08-11

    ... COMMISSION 47 CFR Part 73 Television Broadcasting Services; Eau Claire, WI AGENCY: Federal Communications... Television Licensee, LLC (``Gray''), licensee of WEAU-TV, channel 13, Eau Claire, Wisconsin, requesting the... the Congressional review Act, see 5 U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73...

  10. 78 FR 58470 - Television Broadcasting Services; Cedar Rapids, Iowa

    Science.gov (United States)

    2013-09-24

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Cedar Rapids, Iowa AGENCY: Federal Communications... review Act, see 5 U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Television....

  11. 76 FR 19276 - Television Broadcasting Services; El Paso, TX

    Science.gov (United States)

    2011-04-07

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; El Paso, TX AGENCY: Federal Communications... U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Television. Federal...

  12. 75 FR 13681 - Television Broadcasting Services; Atlantic City, NJ

    Science.gov (United States)

    2010-03-23

    ... COMMISSION 47 CFR Part 73 Television Broadcasting Services; Atlantic City, NJ AGENCY: Federal Communications... amended, to allocate not less than one very high frequency commercial television channel to each State, if... Review Act, see 5 U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Television,...

  13. Development of a speech recognition system for Spanish broadcast news

    NARCIS (Netherlands)

    Niculescu, Andreea; Jong, de Franciska

    2008-01-01

    This paper reports on the development process of a speech recognition system for Spanish broadcast news within the MESH FP6 project. The system uses the SONIC recognizer developed at the Center for Spoken Language Research (CSLR), University of Colorado. Acoustic and language models were trained usi

  14. 75 FR 62690 - Radio Broadcasting Services; Grants Pass, Oregon

    Science.gov (United States)

    2010-10-13

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Grants Pass, Oregon AGENCY: Federal Communications..., allots FM Channel 257A at Grants Pass, Oregon, as the community's second commercial FM transmission service. Channel 257A can be allotted at Grants Pass, consistent with the minimum distance...

  15. International law gives states right to jam foreign radio broadcasts

    Science.gov (United States)

    Timofeyeva, G.

    1984-02-01

    A series of documents was adopted by the UN and UNESCO emphasizing attention on the need to use the mass information media in the interest of peace, detente, development of international cooperation and against the arms race. The role of jamming foreign broadcasts as an aid to maintaining internal order was discussed.

  16. 75 FR 76294 - Radio Broadcasting Services: Pacific Junction, IA

    Science.gov (United States)

    2010-12-08

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services: Pacific Junction, IA AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The staff deletes FM Channel 299C2 at Pacific Junction,...

  17. Will broadcasters survive in the online and digital domain?

    NARCIS (Netherlands)

    Leurdijk, A.

    2007-01-01

    Digital television and the internet are fundamentally changing media markets. Consumers have access to an increasing amount of news, information and entertainment. In addition to traditional media companies such as publishers and broadcasters new players enter the market as content producers, packag

  18. Inter-destination Media Synchronization for TV broadcasts

    NARCIS (Netherlands)

    Mekuria, R.N.

    2011-01-01

    This thesis presents a study on the application of inter-destination synchronization for TV-broadcasting. Inter-destination media synchronization implies synchronizing media output at different receivers. This thesis starts by investigating differences in media output between receivers of TV broadca

  19. 77 FR 64792 - Radio Broadcasting Services; Pike Road, AL

    Science.gov (United States)

    2012-10-23

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Pike Road, AL AGENCY: Federal Communications... filed by Alatron Corporation, Inc., proposing the allotment of Channel 228A at Pike Road, Alabama, as... allotted to Pike Road consistent with the minimum distance separation requirements of the Rules with a...

  20. 77 FR 38761 - Radio Broadcasting Services; Pike Road, AL

    Science.gov (United States)

    2012-06-29

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Pike Road, AL AGENCY: Federal Communications... rulemaking filed by Alatron Corporation, Inc., proposing the allotment of Channel 228A at Pike Road, Alabama... expressing a continuing interest in the proposed Pike Road allotment. It is the Commission's policy...

  1. 78 FR 11987 - Radio Broadcasting Services; Avalon, California

    Science.gov (United States)

    2013-02-21

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Avalon, California AGENCY: Federal Communications... INFORMATION: The Commission published a Report and Order, MB Docket No. 02-223, released September 17, 2002...

  2. 77 FR 73461 - Commission Seeks Comment on Broadcast Ownership Report

    Science.gov (United States)

    2012-12-10

    ... concerning ownership of commercial television, radio, Class A television, and low-power television stations... the Media Bureau's recently released report on the ownership of commercial broadcast stations, which provides detailed information by race, ethnicity, and gender concerning ownership of commercial...

  3. Analysis of Coexistence of DRM Plus and FM Broadcasting Systems

    Directory of Open Access Journals (Sweden)

    K. Ulovec

    2015-12-01

    Full Text Available This paper deals with DRM (Digital Radio Mondiale Plus and FM (Frequency Modulation radio broadcasting systems coexistence. It brings results based on measurement of mutual interferences of each to other. Minimal necessary value of the signal to interference power ratio is measured under the given reception criteria. Results are useful for broadcasting networks planning. Different DRM Plus modes (i.e. combinations of various protection levels and data carriers modulations are assumed in the case of DRM Plus reception interfered with by FM broadcasting. The differences for various modes are crucial for coverage design of DRM Plus system, while protection ratios have been recommended for only two of eight modes until now. Corrections of protection ratios for other modes are proposed in this paper. Different waveforms types of modulating signal for interfering FM signal are tested. The both mono and stereo FM mode and various sound quality criteria are considered in the case of FM broadcasting reception interfered with by DRM Plus. The influence of peak to average power ratio reduction of interfering DRM Plus signal is observed.

  4. Bluetooth Broadcasting : How far can we go? An experimental study

    NARCIS (Netherlands)

    Aiello, Marco; Jong, Remko de; Nes, Joel de

    2009-01-01

    Bluetooth is a wireless communication technology to build small networks of devices. It was designed as a cable replacement technology. Given its widespread adoption, especially in mobile devices, new uses are possible today. For instance, one can broadcast messages to nomadic users based on their

  5. 77 FR 50630 - Radio Broadcasting Services; Westfield, NY

    Science.gov (United States)

    2012-08-22

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Westfield, NY AGENCY: Federal Communications... Review Act, see 5 U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Radio, Radio...

  6. 78 FR 4078 - Radio Broadcasting Services; Hebbronville, TX

    Science.gov (United States)

    2013-01-18

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Hebbronville, TX AGENCY: Federal Communications... Review Act, see 5 U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Radio, Radio...

  7. 77 FR 46631 - Television Broadcasting Services; Greenville, NC

    Science.gov (United States)

    2012-08-06

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Television Broadcasting Services; Greenville, NC AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The Commission has before it a petition for rulemaking filed by...

  8. 76 FR 69222 - Radio Broadcasting Services; Altamont, OR

    Science.gov (United States)

    2011-11-08

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Altamont, OR AGENCY: Federal Communications Commission. ACTION: Proposed rule. SUMMARY: This document sets forth a proposal to amend the FM Table of...

  9. 76 FR 79112 - Radio Broadcasting Services; Milford, UT

    Science.gov (United States)

    2011-12-21

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Milford, UT AGENCY: Federal Communications Commission. ACTION: Final Rule. SUMMARY: The Audio Division, at the request of Canyon Media Group, LLC, allots...

  10. 77 FR 32900 - Radio Broadcasting Services; Llano, TX

    Science.gov (United States)

    2012-06-04

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Llano, TX AGENCY: Federal Communications Commission... Congressional Review Act, see U.S.C. 801(a)(1)(A). List of Subjects in 47 CFR Part 73 Radio, Radio...

  11. Interviewers' challenging questions in British broadcast debate interviews

    DEFF Research Database (Denmark)

    Emmertsen, Sofie

    2007-01-01

    In recent years some British broadcast panel interviews take a particularly confrontational form. In these debate interviews, news seems to be generated as arguments provided by the interviewees who participate as protagonists of opposite positions. This paper will briefly attempt to show...

  12. Delay Efficient Method for Delivering IPTV Services

    Directory of Open Access Journals (Sweden)

    Sangamesh

    2014-07-01

    Full Text Available Internet Protocol Television (IPTV is a system through which Internet television services are delivered using the architecture and networking methods of the Internet Protocol Suite over a packet-switched network infrastructure, e.g., the Internet and broadband Internet access networks, instead of being delivered through traditional radio frequency broadcast, satellite signal, and cable television (CATV formats. IPTV provides mainly three services: live TV, catch up TV, and video on demand (VoD.This paper focuses on delivering the live TV services by exploiting the virtualised cloud architecture of the IPTV and statistical multiplexing. The VoD tasks are prescheduled so that there will be less Instant Channel Change (ICC delay. We select a proper scheduling algorithm for rescheduling the VoD tasks. We then implement the scheduling algorithm for preshifting the VoD tasks.

  13. LineCast: line-based distributed coding and transmission for broadcasting satellite images.

    Science.gov (United States)

    Wu, Feng; Peng, Xiulian; Xu, Jizheng

    2014-03-01

    In this paper, we propose a novel coding and transmission scheme, called LineCast, for broadcasting satellite images to a large number of receivers. The proposed LineCast matches perfectly with the line scanning cameras that are widely adopted in orbit satellites to capture high-resolution images. On the sender side, each captured line is immediately compressed by a transform-domain scalar modulo quantization. Without syndrome coding, the transmission power is directly allocated to quantized coefficients by scaling the coefficients according to their distributions. Finally, the scaled coefficients are transmitted over a dense constellation. This line-based distributed scheme features low delay, low memory cost, and low complexity. On the receiver side, our proposed line-based prediction is used to generate side information from previously decoded lines, which fully utilizes the correlation among lines. The quantized coefficients are decoded by the linear least square estimator from the received data. The image line is then reconstructed by the scalar modulo dequantization using the generated side information. Since there is neither syndrome coding nor channel coding, the proposed LineCast can make a large number of receivers reach the qualities matching their channel conditions. Our theoretical analysis shows that the proposed LineCast can achieve Shannon's optimum performance by using a high-dimensional modulo-lattice quantization. Experiments on satellite images demonstrate that it achieves up to 1.9-dB gain over the state-of-the-art 2D broadcasting scheme and a gain of more than 5 dB over JPEG 2000 with forward error correction.

  14. Ensuring Multi Messages Broadcasting in Mobile Ad Hoc Network using Network Coding Approach

    Directory of Open Access Journals (Sweden)

    S. V.M.G. Bavithiraja

    2012-01-01

    Full Text Available Problem statement: In mobile adhoc network, broadcasting is a common operation for route establishment and for sending control and emergency messages. Most of the existing broadcasting algorithms consider broadcasting from single source node and consider only single message broadcasting. Initiating multiple messages broadcasting from multiple sources is a challenging task which requires minimum number of retransmission made by the forwarding nodes. Approach: Network coding-based broadcasting was proposed which focuses on reducing the number of transmissions each forwarding node performs in the multiple source/multiple message broadcast application, where each forwarding node combines some of the received messages for transmission. We exploit the usage of directional antennas to network coding-based broadcasting to further reduce energy consumption. A node equipped with directional antennas could divided the omni directional transmission range into several sectors and turns some of them on for transmission. In the proposed scheme using a directional antenna, forwarding nodes selected locally only need to transmit broadcast messages, original or coded, to restricted sectors. Results: Simulation results show that the proposed method maximizes packet delivery ratio and throughput with reduced packet drop. Conclusion: The proposed network coding based broadcasting method reduces the total number of retransmissions made by the forwarding nodes compared to broadcasting using the same forwarding nodes without coding. Directional antennas are used to select the forwarding node set to maximize the throughput with minimal packet drop.

  15. Star on the horizon: The emergence of the direct broadcast satellite in American mass communications

    Science.gov (United States)

    Thomas, J. H.

    1984-12-01

    The purpose of this thesis is to describe the concept of broadcasting from satellites directly to the viewer equipped with a small, inexpensive receiving antenna, and the evolution of this technology as a means of commercial broadcast. Emphasis is placed on the problems of developing a regulatory framework for DBS by the Federal Communications Commission. The opposition of the existing broadcasters to the unregulated development of direct broadcast satellite (DBS) is explored in light of the possible effect that DBS may have on the economic base, audience, and advertising revenue of existing broadcasters. The information for this study was obtained from government documents, legal journals, books and the popular press. Two basic conclusions are drawn from this study: First, that the existing broadcasters have opposed the marketplace development of DBS, and second, that DBS does not pose as great a threat, at least in the near term, as the broadcasters fear.

  16. An Efficient Live TV Scheduling System for 4G LTE Broadcast

    KAUST Repository

    Lau, Chun Pong

    2016-01-01

    Traditional live television (TV) broadcasting systems are proven to be spectrum inefficient. Therefore, researchers propose to provide TV services on fourth-generation (4G) long-term evolution (LTE) networks. However, static broadcast, a typical broadcasting method over cellular network, is inefficient in terms of radio resource usage. To solve this problem, the audience-driven live TV scheduling (ADTVS) framework is proposed, to maximize radio resource usage when providing TV broadcasting services over LTE networks. ADTVS, a system-level scheduling framework, considers both available radio resources and audience preferences, in order to dynamically schedule TV channels for broadcasting at various time and locations. By conducting a simulation using real-life data and scenarios, it is shown that ADTVS significantly outperforms the static broadcast method. Numerical results indicate that, on average, ADTVS enables substantial improvement to broadcast efficiency and conserves considerable amount of radio resources, while forgoing less than 5% of user services compared to the benchmark system.

  17. Broadcast Approach and Oblivious Cooperative Strategies for the Wireless Relay Channel - Part II: Block-Markov Decode-and-Forward (BMDF)

    CERN Document Server

    Braginskiy, Evgeniy; Shamai, Shlomo

    2010-01-01

    This is the second in a two part series of papers on incorporation of the broadcast approach into oblivious protocols for the relay channel where the source and the relay are collocated. Part I described the broadcast approach and its benefits in terms of achievable rates when used with the sequential decode- and-forward (SDF) scheme. Part II investigates yet another oblivious scheme, the Block-Markov decode- and-forward (BMDF) under the single and two-layered transmissions. For the single layer, previously reported results are enhanced and a conjecture regarding the optimal correlation coefficient between the source and the relay's transmission is established. For the discrete multi-layer transmission of two or more layers, it is shown that perfect cooperation (2x1 MISO) rates are attained even with low collocation gains at the expense of a longer delay, improving upon those achievable by the SDF.

  18. 75 FR 22792 - Closed Auction of Broadcast Construction Permits Scheduled for July 20, 2010; Notice and Filing...

    Science.gov (United States)

    2010-04-30

    ... Plus, Inc., (ii) Directel Inc. to SCHC Lubbock Application, Inc., (iii) Music Express Broadcasting, Inc. to Music Express Broadcasting Corp., and (iv) Rosen Broadcasting, Inc. to CHET-5 Broadcasting, L.P. 4.... Applicants owned by members of minority groups and/or women, as defined in 47 CFR 1.2110(c)(3), and...

  19. 37 CFR 253.5 - Performance of musical compositions by public broadcasting entities licensed to colleges and...

    Science.gov (United States)

    2010-07-01

    ... compositions by public broadcasting entities licensed to colleges and universities. 253.5 Section 253.5 Patents... BROADCASTING § 253.5 Performance of musical compositions by public broadcasting entities licensed to colleges... terms of this section. (c) Royalty rate. A public broadcasting entity within the scope of this...

  20. NBRS:a broadcast authentication scheme in WSN with defending against DoS attacks%WSN中抗DoS攻击的广播认证方案

    Institute of Scientific and Technical Information of China (English)

    李晋; 曹晓梅

    2014-01-01

    针对当前无线传感网( WSN)中广播认证方案的端对端时延较长、基于数字签名的广播认证能耗较大的问题,提出一种新的抗拒绝服务( DoS)攻击的广播认证方案,在基于Nyberg快速单向累加器的广播认证的基础上加入信誉机制,引入邻居信誉值和全局信誉值两个参数对节点的信誉值进行全面评估。通过判断全局信誉值的大小来决定是先转发还是先认证,有效地降低了端对端时延,降低了计算和存储能耗,同时增加了对抗DoS攻击的能力。%For the end-to-end delay of the current broadcast authentication scheme in Wireless Sensor Network ( WSN) is longer, broadcast authentication based on digital signature has a lot of energy consumption, this paper proposed a new broadcast authentication scheme with defending against Deny of Service ( DoS) attacks that added the reputation mechanism to the broadcast authentication based on Nyberg's fasting one-way accumulator, and introduced two parameters, neighbors reputation values and the global reputation values, to conduct a comprehensive assessment of the nodes. By judging the global reputation value, forward-first or certification-first was determined, which effectively reduced the end-to-end delay, and the computing and storage energy, while increasing the ability of defending against DoS attacks.

  1. Analytical studies of spectrum broadcast structures in quantum Brownian motion

    Science.gov (United States)

    Tuziemski, J.; Korbicz, J. K.

    2016-11-01

    Spectrum broadcast structures are a new and fresh concept in the quantum-to-classical transition, introduced recently in the context of decoherence and the appearance of objective features in quantum mechanics. These are specific quantum state structures, responsible for the objectivization of the decohered state of a system. Recently, they have been demonstrated by means of the well-known quantum Brownian motion model of the recoilless limit (infinitely massive central system), as the principal interest lies in information transfer from the system to the environment. However, a final analysis relied on numerics. Here, after a presentation of the main concepts, we perform analytical studies of the model, showing the timescales and the efficiency of the spectrum broadcast structure formation. We consider a somewhat simplified environment, being random with a uniform distribution of frequencies.

  2. Vast Educational Mobile Content Broadcasting using ARMrayan Multimedia Mobile CMS

    CERN Document Server

    Fatahi, Somayeh; Jahromi, Zahra Forootan

    2010-01-01

    The huge information flow currently available to young generation makes it difficult for educational centers to train them as needed. Most of these information flows occur in transportation time or while on public areas. Competing with commercial information streams is far out of educational centers time and budget. For creating enough mobile applications for vast educational mobile content broadcasting that can match young spirits as well, we designed and developed the ARMrayan Multimedia Mobile CMS as the software that helps communities, educational, cultural or marketing centers in a way that ordinary operators be able to create a variety of fully functional multimedia mobile applications such as tutorials, catalogues, books, and guides in minutes without writing even a line of code. In this paper, we present the role of our developed software in our proposed vast educational content broadcasting system using kiosks and Bluetooth advertising, which will lead to a great leap in M-commerce marketing and publ...

  3. Broadcast group-oriented encryption secure against chosen ciphertext attack

    Institute of Scientific and Technical Information of China (English)

    Ma Chunbo; Ao Jun; Li Jianhua

    2007-01-01

    A novel broadcast encryption scheme for group communication scenarios in distributed networks is presented. In the scheme, anyone is allowed to encrypt a message and distribute it to a designated group. Each member in the designated group has the ability to independently decrypt a ciphertext. In contrast to traditional broadcast encryption, all the valid receivers in the proposed scheme compose the designated group. To take advantage of this property, a tab for the group is set and the matching private key for each member is generated.In addition, before decrypting a ciphertext, anyone in the scheme can verify the ciphertext, to ensure that the ciphertext is correct. This property is very important for large-scale group communication, as the gateway can filter incorrect ciphertext and alleviate the receiver's workload. Finally, a proof in the random oracle model is given, to show that the proposed scheme is secure against the adaptively chosen ciphertext attack.

  4. Secure Capacity Region for Erasure Broadcast Channels with Feedback

    CERN Document Server

    Czap, László; Diggavi, Suhas; Fragouli, Christina

    2011-01-01

    We formulate and study a cryptographic problem relevant to wireless: a sender, Alice, wants to transmit private messages to two receivers, Bob and Calvin, using unreliable wireless broadcast transmissions and short public feedback from Bob and Calvin. We ask, at what rates can we broadcast the private messages if we also provide (information-theoretic) unconditional security guarantees that Bob and Calvin do not learn each-other's message? We characterize the largest transmission rates to the two receivers, for any protocol that provides unconditional security guarantees. We design a protocol that operates at any rate-pair within the above region, uses very simple interactions and operations, and is robust to misbehaving users.

  5. Approximate Characterizations for the Gaussian Source Broadcast Distortion Region

    CERN Document Server

    Tian, Chao; Shamai, Shlomo

    2009-01-01

    We consider the joint source-channel coding problem of sending a Gaussian source over a K-user Gaussian broadcast channel with bandwidth mismatch. A new outer bound to the achievable distortion region is derived using the technique of introducing more than one additional auxiliary random variable, which was previously used to derive sum-rate lower bound for the symmetric Gaussian multiple description problem. By combining this outer bound with the achievability result based on source-channel separation, we provide approximate characterizations of the achievable distortion region within constant multiplicative factors. Furthermore, we show that the results can be extended to general broadcast channels, and the performance of the source-channel separation based approach is also within the same constant multiplicative factors of the optimum.

  6. Experimental service of 3DTV broadcasting relay in Korea

    Science.gov (United States)

    Hur, Namho; Ahn, Chung-Hyun; Ahn, Chieteuk

    2002-11-01

    This paper introduces 3D HDTV relay broadcasting experiments of 2002 FIFA World Cup Korea/Japan using a terrestrial and satellite network. We have developed 3D HDTV cameras, 3D HDTV video multiplexer/demultiplexer, a 3D HDTV receiver, and a 3D HDTV OB van for field productions. By using a terrestrial and satellite network, we distributed a compressed 3D HDTV signal to predetermined demonstration venues which are approved by host broadcast services (HBS), KirchMedia, and FIFA. In this case, we transmitted a 40Mbps MPEG-2 transport stream (DVB-ASI) over a DS-3 network specified in ITU-T Rec. G.703. The video/audio compression formats are MPEG-2 main-profile, high-level and Dolby Digital AC-3 respectively. Then at venues, the recovered left and right images by the 3D HDTV receiver are displayed on a screen with polarized beam projectors.

  7. Broadcasting collective operation contributions throughout a parallel computer

    Science.gov (United States)

    Faraj, Ahmad [Rochester, MN

    2012-02-21

    Methods, systems, and products are disclosed for broadcasting collective operation contributions throughout a parallel computer. The parallel computer includes a plurality of compute nodes connected together through a data communications network. Each compute node has a plurality of processors for use in collective parallel operations on the parallel computer. Broadcasting collective operation contributions throughout a parallel computer according to embodiments of the present invention includes: transmitting, by each processor on each compute node, that processor's collective operation contribution to the other processors on that compute node using intra-node communications; and transmitting on a designated network link, by each processor on each compute node according to a serial processor transmission sequence, that processor's collective operation contribution to the other processors on the other compute nodes using inter-node communications.

  8. Modeling of Slovak Language for Broadcast News Transcription

    OpenAIRE

    Staš, Ján; JUHÁR Jozef

    2015-01-01

    The paper describes recent progress in the development the Slovak language models for transcription of spontaneous speech such as broadcast news, educational talks and lectures, or meetings. This work extends previous research oriented on the automatic transcription of dictated speech and brings some new extensions for improving perplexity and robustness of the Slovak language models trained on the web-based and electronic language resources for being more precise in recognition of spontaneou...

  9. Analytical studies of Spectrum Broadcast Structures in Quantum Brownian Motion

    OpenAIRE

    2016-01-01

    Spectrum Broadcast Structures are a new and fresh concept in the quantum-to-classical transition, introduced recently in the context of decoherence and the appearance of objective features in quantum mechanics. These are specific quantum state structures, responsible for an apparent objectivity of a decohered state of a system. Recently they have been shown to appear in the well known Quantum Brownian Motion model, however the final analysis relied on numerics. Here, after a presentation of t...

  10. Broadcast Using Certified Propagation Algorithm in Presence of Byzantine Faults

    Science.gov (United States)

    2014-11-23

    PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) University of Illinois at Urbana-Champaign ,Coordinated Science Laboratory,1308 West Main Street...necessarily reflect the views of the funding agencies or the U.S. government. Preprint submitted to Computer Science November 23, 2014 Report...correctness of CPA. Keywords: Distributed computing , Byzantine broadcast, CPA, Tight condition 1. Introduction In this work, we explore fault-tolerant

  11. Secure Broadcasting with Imperfect Channel State Information at the Transmitter

    KAUST Repository

    Hyadi, Amal

    2015-11-13

    We investigate the problem of secure broadcasting over fast fading channels with imperfect main channel state information (CSI) at the transmitter. In particular, we analyze the effect of the noisy estimation of the main CSI on the throughput of a broadcast channel where the transmission is intended for multiple legitimate receivers in the presence of an eavesdropper. Besides, we consider the realistic case where the transmitter is only aware of the statistics of the eavesdropper’s CSI and not of its channel’s realizations. First, we discuss the common message transmission case where the source broadcasts the same information to all the receivers, and we provide an upper and a lower bounds on the ergodic secrecy capacity. For this case, we show that the secrecy rate is limited by the legitimate receiver having, on average, the worst main channel link and we prove that a non-zero secrecy rate can still be achieved even when the CSI at the transmitter is noisy. Then, we look at the independent messages case where the transmitter broadcasts multiple messages to the receivers, and each intended user is interested in an independent message. For this case, we present an expression for the achievable secrecy sum-rate and an upper bound on the secrecy sum-capacity and we show that, in the limit of large number of legitimate receivers K, our achievable secrecy sum-rate follows the scaling law log((1−) log(K)), where is the estimation error variance of the main CSI. The special cases of high SNR, perfect and no-main CSI are also analyzed. Analytical derivations and numerical results are presented to illustrate the obtained expressions for the case of independent and identically distributed Rayleigh fading channels.

  12. Vast Educational Mobile Content Broadcasting using ARMrayan Multimedia Mobile CMS

    OpenAIRE

    2010-01-01

    The huge information flow currently available to young generation makes it difficult for educational centers to train them as needed. Most of these information flows occur in transportation time or while on public areas. Competing with commercial information streams is far out of educational centers time and budget. For creating enough mobile applications for vast educational mobile content broadcasting that can match young spirits as well, we designed and developed the ARMrayan Multimedia Mo...

  13. Marginality and Problem Solving Effectiveness in Broadcast Search

    OpenAIRE

    Jeppesen, Lars Bo; Lakhani, Karim R

    2009-01-01

    We examine who the winners are in science problem solving contests characterized by open broadcast of problem information, self-selection of external solvers to discrete problems from the laboratories of large R&D intensive companies and blind review of solution submissions. Analyzing a unique dataset of 166 science challenges involving over 12,000 scientists revealed that technical and social marginality, being a source of different perspectives and heuristics, plays an important role in...

  14. 3-Receiver Broadcast Channels with Common and Confidential Messages

    CERN Document Server

    Chia, Yeow-Khiang

    2009-01-01

    Achievable secrecy rate regions for the general 3-receiver broadcast channel with one common and one confidential message sets are established. We consider two setups: (i) when the confidential message is to be sent to two of the receivers and the third receiver is an eavesdropper; and (ii) when the confidential message is to be sent to one of the receivers and the other two receivers are eavesdroppers. We show that our secrecy rate regions are optimum for some special cases.

  15. Altmark, Article 86(2) and Public Service Broadcasting

    DEFF Research Database (Denmark)

    Mortensen, Frands

    2008-01-01

    En analyse af EU-Kommissionens 17 Beslutninger angående statsstøtte til Public Service Broadcasting, der er truffet efter afsigelse af Altmark-dommen i juli 2003. Kommissionen har i alle tilfælde først analyseret om de fire Altmark-krav er opfyldt, og det er aldrig tilfældet. dernæst har den godk...

  16. The SM/M/N queueing system with broadcasting service

    Directory of Open Access Journals (Sweden)

    Moon Ho Lee

    2006-01-01

    Full Text Available We consider a multiserver queueing model with the semi-Markovian arrival process and exponential service time distribution. Novel customers admission discipline is under study. The customer, which sees several free servers upon arrival, is served simultaneously by all these servers. Such situation occurs, for example, in modeling wireless communication network with broadcasting. Systems with infinite buffer and with losses are investigated. Stationary distributions of a queue, waiting and sojourn times, and the main performance measures are calculated.

  17. Emergency department visits during an Olympic gold medal television broadcast

    OpenAIRE

    Donald A Redelmeier; Vermeulen, Marian J

    2011-01-01

    Background Practice pattern variations are often attributed to physician decision-making with no accounting for patient preferences. Objective To test whether a mass media television broadcast unrelated to health was associated with changes in the rate and characteristics of visits for acute emergency care. Design Time-series analysis of emergency department visits for any reason. Subjects Population-based sample of all patients seeking emergency care in Ontario, Canada. Measures The broadcas...

  18. Analysis of stress, musculoskeletal disorders, and fatigue among broadcasting actors

    OpenAIRE

    Park, Moon-Hee; Kim, Ham-Gyum; Lee, Hae-Kag

    2016-01-01

    [Purpose] The purpose of the study was to assess the health effects of broadcasting actors through a comprehensive research on their job stress, psychosocial stress, and fatigue and to investigate those factors having an impact on their health condition to present a basis for comparative studies and effective human resource management in the future. [Subjects and Methods] A survey was performed to analyze the relevance of the general features, job stress, psychosocial stress, and fatigue. [Re...

  19. Broadcasting simulation case studies to the didactic classroom.

    Science.gov (United States)

    Kalmakis, Karen A; Cunningham, Helene; Lamoureux, Erin T; Ahmed, Elshaymaa M

    2010-01-01

    To explore the potential of using simulation in new ways, it is time to think "outside the lab." To do this, the authors expanded the use of case-study simulations by broadcasting them to classrooms where didactic content could be reinforced with simulation content. Advantages included students' active classroom engagement, simultaneously sharing simulations with many students, modeling students' thinking in clinical situations, and connecting theory to practice.

  20. The Scullery of the Broadcasting House: Female Writers and the Literary Features of the Dutch Broadcasting Organization KRO (1928-1940)

    NARCIS (Netherlands)

    Dera, J.J.M.

    2014-01-01

    Departing from the claim that media actively co-construct gender relations in a society, this article focuses on the interwar literary features of the Dutch Catholic radio broadcaster KRO. Similar to all broadcasting organizations in the Dutch Interbellum, the KRO aired these literary features in or

  1. Analysis and Transceiver Design for the MIMO Broadcast Channel

    CERN Document Server

    Hunger, Raphael

    2013-01-01

    This book deals with the optimization-based joint design of the transmit and receive filters in   MIMO broadcast channel in which the user terminals may be equipped with several antenna elements. Furthermore, the maximum performance of the system in the high power regime as well as the set of all feasible quality-of-service requirements is analyzed. First, a fundamental duality is derived that holds between the MIMO broadcast channel and virtual MIMO multiple access channel. This duality construct allows for the efficient solution of problems originally posed in the broadcast channel in the dual domain where a possibly hidden convexity can often be revealed. On the basis of the established duality result, the gradient-projection algorithm is introduced as a tool to solve constrained optimization problems to global optimality under certain conditions. The gradient-projection tool is then applied to solving the weighted sum rate maximization problem which is a central optimization that arises in any network u...

  2. Radio broadcasting: a conceptual challenge in Latin America

    Directory of Open Access Journals (Sweden)

    Nelia R. Del Bianco

    2012-12-01

    Full Text Available The objective of this paper is to present the partial results of research carried out by the Observatory of Public Radio Broadcasting of Latin America on the changes occurring in the public radio and TV systems in 10 Latin American countries, under the aspects of functioning models, management, financing, and social participation. After the rising to power of governments linked to parties from the left, we verified that communication policies are being established, which aim at closing the gap between traditional state broadcasting stations and the notion of public. This considers the principles that characterize the action of this media, determined by UNESCO (2001: universality, diversity, independence, and differentiation of content in the programming. A hundred and forty broadcasting stations were analyzed from the perspective of being public based on two criteria: those that are under the control of the State direct or indirectly, by means of concessions for use without profit for foundations, companies, and public universities; and those that receive public financing. Based on the analysis of the data, five trend tendencies were observed: the construction of a new regulatory framework; the creation of public companies instead of legal centralized state structures; the institution of relatively autonomous deliberative councils responsible for overseeing the management of the stations; the diversification of funding sources in an attempt to reverse the dependence on government resources; and the renewal of the programming with the opening for independent production.

  3. Solving Optimal Broadcasting Strategy in Metropolitan MANETs Using MOCELL Algorithm

    Directory of Open Access Journals (Sweden)

    M. Ghonamy

    2010-09-01

    Full Text Available Mobile ad-hoc networks (MANETs are a set of communicating devices that are able to spontaneously interconnect without any pre-existing infrastructure. In such a scenario, broadcasting becomes very important to the existence and the operation of this network. The process of optimizing the broadcast strategy of MANETs is a multi-objective problem with three objectives: (1 reaching as many stations as possible, (2 minimizing the network utilization and (3 reducing the broadcasting duration. The main contribution of this paper is that it tackles this problem by using multi-objective cellular genetic algorithm that is called MOCELL. MOCELL computes a Pareto front of solutions to empower a human designer with the ability to choose the preferred configuration for the network. Our results are compared with those obtained from the previous proposals used for solving the problem, a cellular multi-objective genetic algorithm which called cMOGA (the old version of MOCELL. We conclude that MOCELL outperforms cMOGA with respect to set coverage metric.

  4. Climate Matters: Increasing Climate Literacy Through Broadcast Meteorologists

    Science.gov (United States)

    Sanford, T. J.; Placky, B. W.

    2015-12-01

    Broadcast meteorologists are among the most trusted members of the media landscape and they have a unique opportunity to reach the broad public with information about climate change. A recent survey by Maibach, et al. (2015) has shown that more than 90% of TV weathercasters think that their audience is at least somewhat interested in learning about the local impacts of climate change and 7 in 10 think that it is appropriate for them to report the science of climate change to their audience. But about half of these TV weathercasters have experienced obstacles to reporting climate change - citing lack of time to research and produce material, in addition to lack of access to appropriate visuals/graphics and access to trusted scientific information. Climate Matters is an NSF funded program that partners with broadcast meteorologists to deliver scientifically sound climate change information to the public that is local and relevant. A team of climate scientists, meteorologists, data analysts, journalists, and multimedia artists analyze and prepare content on a weekly basis so that it may be readily included in a broadcast weather segment, online or during community outreach. The program started as a pilot project with just one meteorologist in 2010 before Climate Central launched a full-time, nationwide program in 2012. Since then, Climate Matters has grown to include over 250 meteorologists strong and in more than 100 markets across the country, including Spanish language TV stations.

  5. Satellite broadcasting experiments and in-orbit performance of BSE

    Science.gov (United States)

    Shimoseko, S.; Yamamoto, M.; Kajikawa, M.; Arai, K.

    1981-09-01

    The Japanese medium-scale Broadcasting Satellite for Experimental Purposes (BSE) was launched in April 1978 and placed in a geostationary orbit at 110 deg E longitude. Two transmitters with bandwidths of 50 MHz and 80 MHz were mounted on the BSE transponder to conduct experiments on various television signals; no significant variation in transmission characteristics was observed during the two-year period. Rain attenuation characteristics in the 12 GHz band were studied and a value of 6.6 dB was registered in Owase, one of the most rainy areas in Japan. The strength of the rain scatter wave of the BSE uplink signal was measured to investigate the characteristics between broadcasting satellite uplink and a terrestrial link in the 14 GHz band. Uplink power control, important for the efficient operation of satellite communications systems, was shown to compensate the variations in receiving power due to fluctuations in the beam pointing of the satellite antenna. Routine operations were performed to check the three-axis attitude control, stationkeeping, housekeeping, and the bus equipment. The electrical power, secondary propulsion, thermal control, and communication subsystems were also evaluated. The first operations 1 broadcasting satellite is scheduled to be launched early in 1984.

  6. Radiofrequency Exposure Amongst Employees of Mobile Network Operators and Broadcasters.

    Science.gov (United States)

    Litchfield, Ian; van Tongeren, Martie; Sorahan, Tom

    2016-10-13

    Little is known about personal exposure to radiofrequency (RF) fields amongst employees in the telecommunications industry responsible for installing and maintaining transmitters. IARC classified RF exposure as a possible carcinogen, although evidence from occupational studies was judged to be inadequate. Hence, there is a need for improved evidence of any potentially adverse health effects amongst the workforce occupationally exposed to RF radiation. In this study, results are presented from an exposure survey using data from personal monitors used by employees in the broadcasting and telecommunication industries of the UK. These data were supplemented by spot measurements using broadband survey metres and information on daily work activities provided by employee questionnaires. The sets of real-time personal data were categorised by four types of site determined by the highest powered antenna present (high, medium or low power and ground-level sites). For measurements gathered at each type of site, the root mean square and a series of box plots were produced. Results from the daily activities diaries suggested that riggers working for radio and television broadcasters were exposed to much longer periods as compared to colleagues working for mobile operators. Combining the results from the measurements and daily activity diaries clearly demonstrate that exposures were highest for riggers working for broadcasting sites. This study demonstrates that it is feasible to carry out exposure surveys within these populations that will provide reliable estimates of exposure that can be used for epidemiological studies of occupational groups exposed to RF fields.

  7. Modeling of Ionospheric Delay for SBAS Using Spherical Harmonics Functions

    Directory of Open Access Journals (Sweden)

    Deokhwa Han

    2013-06-01

    Full Text Available In SBAS (satellite-based augmentation system, it is important to estimate ionospheric delay accurately to guarantee user's accuracy and integrity. Grid based ionospheric models are generally used to estimate ionospheric delay for SBAS. In grid based model, SBAS broadcasts vertical ionospheric delays at the grid point, and users get their ionospheric delay by interpolating those values. Ionospheric model based on spherical harmonics function is another method to estimate ionospheric delay. This is a function based approach and spherical harmonics function is a 2-D fourier series, containing the product of latitude dependent associated Legendre functions and the sum of the longitude dependent sine and cosine terms. Using ionospheric delay measurements, coefficients for each spherical harmonics functions are estimated. If these coefficients are known, user can reconstruct ionospheric delay. In this paper, we consider the spherical harmonics based model and propose a ionospheric delay estimation strategy for SBAS that can be used to mitigate ionospheric delay estimation error, especially in storm condition. First, coefficients are estimated under initial order and degree. Then residual errors for each measurement are modeled by higher order and degree terms, then coefficients for these terms are estimated. Because SBAS message capacity is limited, in normal condition, initial order terms are only used to estimate ionospheric delay. If ionospheric storm is detected and there is need to mitigate the error, higher order terms are also used and error can be decreased. To compare the accuracy of spherical harmonics based model with grid based model, some post-processing test results are presented. Raw observation data is obtained from RINEX format and the root mean square(RMS and max value of residual errors are presented.

  8. The Right Delay

    NARCIS (Netherlands)

    Datadien, A.H.R.; Haselager, W.F.G.; Sprinkhuizen-Kuyper, I.G.

    2011-01-01

    Axonal conduction delays should not be ignored in simulations of spiking neural networks. Here it is shown that by using axonal conduction delays, neurons can display sensitivity to a specific spatio-temporal spike pattern. By using delays that complement the firing times in a pattern, spikes can ar

  9. The Use of International Television Formats by Public-Service Broadcasters in Australia, Denmark and Germany

    DEFF Research Database (Denmark)

    Esser, Andrea; Jensen, Pia Majbritt

    importantly, commercial broadcasters favour internationally tried formats over original content because formats satisfy the key management objective of ‘de-risking’ (Esser 2013). The impact the format trade’s acceleration over the last decade has had on both, production and broadcast schedules around...... the world is such, that it would be no exaggeration to speak of ‘creative destruction’ (Schumpeter 1942). How has this impacted on the production and provision of public-service broadcasting? Public-service broadcasters historically have different objectives to private commercial broadcasters and format...... adaptations, as Jérôme Bourdon has noted, had no history here because they “contradicted almost everything public service broadcasting stood for” (2012: 114). Even though in many countries PSBs are also expected to provide entertainment, next to quality information and educational material, the overall idea...

  10. An Identity-Based (IDB) Broadcast Encryption Scheme with Personalized Messages (BEPM)

    Science.gov (United States)

    Xu, Ke; Liao, Yongjian; Qiao, Li

    2015-01-01

    A broadcast encryption scheme with personalized messages (BEPM) is a scheme in which a broadcaster transmits not only encrypted broadcast messages to a subset of recipients but also encrypted personalized messages to each user individually. Several broadcast encryption (BE) schemes allow a broadcaster encrypts a message for a subset S of recipients with public keys and any user in S can decrypt the message with his/her private key. However, these BE schemes can not provide an efficient way to transmit encrypted personalized messages to each user individually. In this paper, we propose a broadcast encryption scheme with a transmission of personalized messages. Besides, the scheme is based on multilinear maps ensure constant ciphertext size and private key size of each user and the scheme can achieve statically security. More realistically, the scheme can be applied to the Conditional Access System (CAS) of pay television (pay-TV) efficiently and safely. PMID:26629817

  11. An Identity-Based (IDB) Broadcast Encryption Scheme with Personalized Messages (BEPM).

    Science.gov (United States)

    Xu, Ke; Liao, Yongjian; Qiao, Li; Liu, Zhangyun; Yang, Xiaowei

    2015-01-01

    A broadcast encryption scheme with personalized messages (BEPM) is a scheme in which a broadcaster transmits not only encrypted broadcast messages to a subset of recipients but also encrypted personalized messages to each user individually. Several broadcast encryption (BE) schemes allow a broadcaster encrypts a message for a subset S of recipients with public keys and any user in S can decrypt the message with his/her private key. However, these BE schemes can not provide an efficient way to transmit encrypted personalized messages to each user individually. In this paper, we propose a broadcast encryption scheme with a transmission of personalized messages. Besides, the scheme is based on multilinear maps ensure constant ciphertext size and private key size of each user and the scheme can achieve statically security. More realistically, the scheme can be applied to the Conditional Access System (CAS) of pay television (pay-TV) efficiently and safely.

  12. Novel scheme enabling broadcast signal transmission in WDM passive optical network

    Institute of Scientific and Technical Information of China (English)

    Xuejiao Ma; Chaoqin Gan

    2011-01-01

    @@ We present a novel method for providing broadcast signal transmission in a wavelength division multiplex-ing passive optical network (WDM-PON).An unmodulated optical carrier for downstream transmission and a pair of unmodulated single-side band subcarriers are utilized for broadcast delivery and upstream transmission, respectively.System performance at 2.5-Gb/s downlupstream and 2.5-Gb/s broadcast trans-mission is also investigated.%We present a novel method for providing broadcast signal transmission in a wavelength division multiplexing passive optical network (WDM-PON).An unmodulated optical carrier for downstream transmission and a pair of unmodulated single-side band subcarriers are utilized for broadcast delivery and upstream transmission, respectively.System performance at 2.5-Gb/s down/upstream and 2.5-Gb/s broadcast transmission is also investigated.

  13. Delay analysis of a satellite channel reservation system with variable frame format

    Science.gov (United States)

    Mine, H.; Ohno, K.; Shioyama, T.

    1983-06-01

    In describing the operation, it is pointed out that the current queue length at each user is reported through minislots in the up-link header to a satellite possessing processing capability. The satellite broadcasts slot assignments for transmission in the next frame to users through the down-link header on the basis of the users' reported queue status. The number of data slots per frame varies according to the reported queue status of the users. A Markov-chain model is presented for analyzing the average total delay of the system. Numerical results are given for comparing the delay of the system with the delay of TDMA and reservation systems with fixed frame format. The system is shown to provide a better delay/throughput performance than these other systems over a wide range of traffic intensities. In addition, the delay curve of the system is relatively flat up to a traffic intensity of approximately 0.8.

  14. Television for the 21st century: initial experience with digital high-definition television broadcast

    Science.gov (United States)

    Mahrer, Stephen M.

    2000-08-01

    The advent of US Digital Television Broadcasting in the late fall of 1998 has profoundly changed both the technology and business of 'Television' as we have grown to known it. US DTV, encompassing as it does a wide variety of 'voluntary' signal formats, presents today's broadcaster with an unparalleled choice of the 'right tool for the job.' This paper will explore the technical aspects of some of those choices and the potential for DTV equipment application to non-broadcast environments.

  15. The use of international television formats by public-service broadcasters in Australia, Denmark and Germany

    DEFF Research Database (Denmark)

    Esser, Andrea; Jensen, Pia Majbritt

    2015-01-01

    Today, the use of internationally licensed television formats, developed in one market and sold for local adaptation, is a widespread practice amongst commercial broadcasters around the world. But how has this trend impacted on public service broadcasting? Public service stipulations include...... broadcasters? Responding to criticisms of the international, commodified character of formats in general and their staple, reality TV and lifestyle entertainment more specifically, this article provides a quantitative and qualitative analysis of the use of international formats by Australian, Danish and German...

  16. Technological, political and economic changes and their implications for the evolution of broadcasting services

    DEFF Research Database (Denmark)

    Tadayoni, Reza

    2000-01-01

    The subject of this Ph.D. thesis is changes in the market for broadcasting services as a result of technological, political, and economic drivers. Broadcasting services can be categorised as a part of the ICT-based information and knowledge intensive services that have gone through radical changes...... and demand sites, scarcity of transmission resources, and the historical aspects that make the development of the broadcasting service market different from other information and knowledge intensive services....

  17. Professional data broadcasting: The new wave in pan-European information services

    Science.gov (United States)

    Castell, Stephen

    1989-05-01

    The background to and principles of data broadcasting are described. A review of customer usage of BBC Datacast in the U.K. is presented. Future developments are discussed, including the expansion of data broadcasting activities onto other transmission media including radio, cable and satellite channels, and the introduction of hybrid applications involving the interface of data broadcasting with traditional PTO and value-added networks. The European and international implications are reviewed together with a commentary on regulatory and legal considerations.

  18. Broadcasting of Entanglement in Three-Particle Greenberger-Horne-Zeilinger State via Quantum Copying

    Institute of Scientific and Technical Information of China (English)

    TONG Zhao-Yang; KUANG Le-Man

    2000-01-01

    We introduce entanglement measures to describe entanglement in a three-particle system and apply it to studying broadcasting of entanglement in the three-particle Greenberger-Horne-Zeilinger (GHZ) state. The results show that the entanglement of the three-qubit GHZ state can be partially broadcasted with the help of local or non-local copying processes. It is found that non-local cloning is much more efficient than local cloning for the broadcasting of entanglement.

  19. An Analytical Delay Model

    Institute of Scientific and Technical Information of China (English)

    MIN Yinghua; LI Zhongcheng

    1999-01-01

    Delay consideration has been a majorissue in design and test of high performance digital circuits. Theassumption of input signal change occurring only when all internal nodesare stable restricts the increase of clock frequency. It is no longertrue for wave pipelining circuits. However, previous logical delaymodels are based on the assumption. In addition, the stable time of arobust delay test generally depends on the longest sensitizable pathdelay. Thus, a new delay model is desirable. This paper explores thenecessity first. Then, Boolean process to analytically describe thelogical and timing behavior of a digital circuit is reviewed. Theconcept of sensitization is redefined precisely in this paper. Based onthe new concept of sensitization, an analytical delay model isintroduced. As a result, many untestable delay faults under thelogical delay model can be tested if the output waveforms can be sampledat more time points. The longest sensitizable path length is computedfor circuit design and delay test.

  20. Camouflage Traffic: Minimizing Message Delay for Smart Grid Applications Under Jamming

    Science.gov (United States)

    2015-01-16

    anti-islanding in the power engineering commu- nity [3], [28]. In this work, we use universal software radio peripheral (USRP) devices with GNU Radio ...error correction is not used in our experiments in order to reduce the GNU Radio proc- essing delay. Table 3 shows the message invalidation probability as...attack that constantly broadcasts radio interference is a primary security threat to prevent the deployment of wireless networks in the smart grid. Hence

  1. Intelligent Broadcasting in Mobile Ad Hoc Networks: Three Classes of Adaptive Protocols

    Directory of Open Access Journals (Sweden)

    Colagrosso Michael D

    2007-01-01

    Full Text Available Because adaptability greatly improves the performance of a broadcast protocol, we identify three ways in which machine learning can be applied to broadcasting in a mobile ad hoc network (MANET. We chose broadcasting because it functions as a foundation of MANET communication. Unicast, multicast, and geocast protocols utilize broadcasting as a building block, providing important control and route establishment functionality. Therefore, any improvements to the process of broadcasting can be immediately realized by higher-level MANET functionality and applications. While efficient broadcast protocols have been proposed, no single broadcasting protocol works well in all possible MANET conditions. Furthermore, protocols tend to fail catastrophically in severe network environments. Our three classes of adaptive protocols are pure machine learning, intra-protocol learning, and inter-protocol learning. In the pure machine learning approach, we exhibit a new approach to the design of a broadcast protocol: the decision of whether to rebroadcast a packet is cast as a classification problem. Each mobile node (MN builds a classifier and trains it on data collected from the network environment. Using intra-protocol learning, each MN consults a simple machine model for the optimal value of one of its free parameters. Lastly, in inter-protocol learning, MNs learn to switch between different broadcasting protocols based on network conditions. For each class of learning method, we create a prototypical protocol and examine its performance in simulation.

  2. Retrieving Radio News Broadcasts in Danish: Accuracy and Categorization of Unrecognized Words

    DEFF Research Database (Denmark)

    Hertzum, Morten; Lund, Haakon; Troelsgaard, Rasmus

    2016-01-01

    Digital archives of radio news broadcasts can possibly be made searchable by combining speech recognition with information retrieval. We explore this possibility for the retrieval of news broadcasts in Danish. An average of 84% of the words in the broadcasts was recognized. Most of the unrecognized...... words were compounds, names, and other words that appear of value to retrieval. Thus, the set of words describing a broadcast has to be expanded to compensate for the recognition errors. We discuss doing this by exploiting the alternative matches from the speech recognizer and by extracting words from...

  3. Intelligent Broadcasting in Mobile Ad Hoc Networks: Three Classes of Adaptive Protocols

    Directory of Open Access Journals (Sweden)

    Michael D. Colagrosso

    2006-11-01

    Full Text Available Because adaptability greatly improves the performance of a broadcast protocol, we identify three ways in which machine learning can be applied to broadcasting in a mobile ad hoc network (MANET. We chose broadcasting because it functions as a foundation of MANET communication. Unicast, multicast, and geocast protocols utilize broadcasting as a building block, providing important control and route establishment functionality. Therefore, any improvements to the process of broadcasting can be immediately realized by higher-level MANET functionality and applications. While efficient broadcast protocols have been proposed, no single broadcasting protocol works well in all possible MANET conditions. Furthermore, protocols tend to fail catastrophically in severe network environments. Our three classes of adaptive protocols are pure machine learning, intra-protocol learning, and inter-protocol learning. In the pure machine learning approach, we exhibit a new approach to the design of a broadcast protocol: the decision of whether to rebroadcast a packet is cast as a classification problem. Each mobile node (MN builds a classifier and trains it on data collected from the network environment. Using intra-protocol learning, each MN consults a simple machine model for the optimal value of one of its free parameters. Lastly, in inter-protocol learning, MNs learn to switch between different broadcasting protocols based on network conditions. For each class of learning method, we create a prototypical protocol and examine its performance in simulation.

  4. Public Service Broadcasting as a Public Good: Challenges in the Digital Era

    Directory of Open Access Journals (Sweden)

    Ivana Andrijašević

    2015-12-01

    Full Text Available This article presents a summary of the most important standpoints of the economic debate about public service broadcasting as a public good, and its provision in both the analogue and digital age of broadcasting. Due to frequent technological developments, which heavily influence the broadcasting sector, this debate, initiated in 1958 by American economist Paul A. Samuelson, has continued up to the present day. It also reflects on the concept of PSM as a public good in a globalizing, multi-platform, usergenerated content infused media landscape. Finally, it ponders the future developments of PSM as a public good in the digital era of broadcasting.

  5. Evolution of public opinions in closed societies influenced by broadcast media

    Science.gov (United States)

    Fan, Kangqi; Pedrycz, Witold

    2017-04-01

    Studies on opinion evolution in a closed society can help people design strategies to emancipate from the control of public opinions and prevent the diffusion of extremism. In this work, the social judgment based opinion (SJBO) dynamics model is extended to explore the collective debates in a closed system that consists of a social network and a broadcast network. The broadcast network is a group of channels through which the so-called broadcast media or mainstream media transmit the same opinion to social agents. Numerical experiments show that the broadcast media can assimilate most of the agents when contrarians are absent. Including agents' diverse attitudes toward the broadcast media, although downsizes the supporters of broadcast media, fails to make contrarians outnumber the supporters. The dominance of broadcast media in a closed system can be overturned by introducing a small number of inflexible contrarians. Influenced by the competition between contrarians and broadcast media, few centrists survive the collective debates. The scale of supporters is maximized when agents neither have their own initial opinions nor have access to the contrarians, whereas the development of contrarians can be boosted when agents start with non-zero opinions and the repulsion to broadcast media is taken into consideration.

  6. Conical-Domain Model for Estimating GPS Ionospheric Delays

    Science.gov (United States)

    Sparks, Lawrence; Komjathy, Attila; Mannucci, Anthony

    2009-01-01

    The conical-domain model is a computational model, now undergoing development, for estimating ionospheric delays of Global Positioning System (GPS) signals. Relative to the standard ionospheric delay model described below, the conical-domain model offers improved accuracy. In the absence of selective availability, the ionosphere is the largest source of error for single-frequency users of GPS. Because ionospheric signal delays contribute to errors in GPS position and time measurements, satellite-based augmentation systems (SBASs) have been designed to estimate these delays and broadcast corrections. Several national and international SBASs are currently in various stages of development to enhance the integrity and accuracy of GPS measurements for airline navigation. In the Wide Area Augmentation System (WAAS) of the United States, slant ionospheric delay errors and confidence bounds are derived from estimates of vertical ionospheric delay modeled on a grid at regularly spaced intervals of latitude and longitude. The estimate of vertical delay at each ionospheric grid point (IGP) is calculated from a planar fit of neighboring slant delay measurements, projected to vertical using a standard, thin-shell model of the ionosphere. Interpolation on the WAAS grid enables estimation of the vertical delay at the ionospheric pierce point (IPP) corresponding to any arbitrary measurement of a user. (The IPP of a given user s measurement is the point where the GPS signal ray path intersects a reference ionospheric height.) The product of the interpolated value and the user s thin-shell obliquity factor provides an estimate of the user s ionospheric slant delay. Two types of error that restrict the accuracy of the thin-shell model are absent in the conical domain model: (1) error due to the implicit assumption that the electron density is independent of the azimuthal angle at the IPP and (2) error arising from the slant-to-vertical conversion. At low latitudes or at mid

  7. Feedback Reduction in Broadcast and two Hop Multiuser Networks: A Compressed Sensing Approach

    KAUST Repository

    Shibli, Hussain J.

    2013-05-21

    In multiuser wireless networks, the base stations (BSs) rely on the channel state information (CSI) of the users to in order to perform user scheduling and downlink transmission. While the downlink channels can be easily estimated at all user terminals via a single broadcast, several key challenges are faced during uplink (feedback) transmission. Firstly, the noisy and fading feedback channels are usually unknown at the base station, and therefore, channel training is usually required from all users. Secondly, the amount of air-time required for feedback transmission grows linearly with the number of users. This domination of the network resources by feedback information leads to increased scheduling delay and outdated CSI at the BS. In this thesis, we tackle the above challenges and propose feedback reduction algorithms based on the theory of compressive sensing (CS). The proposed algorithms encompass both single and dual hop wireless networks, and; i) permit the BS to obtain CSI with acceptable recovery guarantees under substantially reduced feedback overhead, ii) are agnostic to the statistics of the feedback channels, and iii) utilize the apriori statistics of the additive noise to identify strong users. Numerical results show that the proposed algorithms are able to reduce the feedback overhead, improve detection at the BS, and achieve a sum-rate close to that obtained by noiseless dedicated feedback algorithms.

  8. A BROADCAST BASED ROUTING PROTOCOL FOR INTER-CLUSTER DATA DISSEMINATION IN VEHICULAR COMMUNICATION

    Directory of Open Access Journals (Sweden)

    Auxeeliya Jesudoss

    2014-01-01

    Full Text Available Vehicular communication is one of the fast growing and promising technologies for a safe and comfortable driving environment. These technologies do not end up with economic and safety ramifications, but also extended with other informational and entertainment oriented services. Data are being propagated multi-hop between source and destination vehicles for many real-life applications. Clustering is one of the effective and scalable solutions for data dissemination in wireless ad hoc networks. Though many cluster-based methods have been proposed for multi-hop data delivery in vehicular ad hoc networks, most of them do not consider the real-time changes in the network topology or imposes large penalties in routing such as unstable clusters, broken links, updating route tables. In order to address these issues, we propose a broadcast based routing protocol for inter-cluster data dissemination in this study that works on real-time vehicle information. Unlike, most existing routing algorithms, it only uses hello messages to obtain routing information without many other control messages. In addition, it alleviates the storage of routing information in every node, which largely reduces the overheads in routing. We performed extensive simulation to demonstrate the effectiveness and efficiency of the proposed routing protocol. Results show that the proposed protocol outperforms other approaches in terms of average delay, average delivery ratio and average number of hops.

  9. A Dynamic Probabilistic Based Broadcasting Scheme for MANETs

    Science.gov (United States)

    Shanmugam, Kannan; Subburathinam, Karthik; Velayuthampalayam Palanisamy, Arunachalam

    2016-01-01

    MANET is commonly known as Mobile Ad Hoc Network in which cluster of mobile nodes can communicate with each other without having any basic infrastructure. The basic characteristic of MANET is dynamic topology. Due to the dynamic behavior nature, the topology of the network changes very frequently, and this will lead to the failure of the valid route repeatedly. Thus, the process of finding the valid route leads to notable drop in the throughput of the network. To identify a new valid path to the targeted mobile node, available proactive routing protocols use simple broadcasting method known as simple flooding. The simple flooding method broadcasts the RREQ packet from the source to the rest of the nodes in mobile network. But the problem with this method is disproportionate repetitive retransmission of RREQ packet which could result in high contention on the available channel and packet collision due to extreme traffic in the network. A reasonable number of routing algorithms have been suggested for reducing the lethal impact of flooding the RREQ packets. However, most of the algorithms have resulted in considerable amount of complexity and deduce the throughput by depending on special hardware components and maintaining complex information which will be less frequently used. By considering routing complexity with the goal of increasing the throughput of the network, in this paper, we have introduced a new approach called Dynamic Probabilistic Route (DPR) discovery. The Node's Forwarding Probability (NFP) is dynamically calculated by the DPR mobile nodes using Probability Function (PF) which depends on density of local neighbor nodes and the cumulative number of its broadcast covered neighbors. PMID:27019868

  10. A Dynamic Probabilistic Based Broadcasting Scheme for MANETs.

    Science.gov (United States)

    Shanmugam, Kannan; Subburathinam, Karthik; Palanisamy, Arunachalam Velayuthampalayam

    2016-01-01

    MANET is commonly known as Mobile Ad Hoc Network in which cluster of mobile nodes can communicate with each other without having any basic infrastructure. The basic characteristic of MANET is dynamic topology. Due to the dynamic behavior nature, the topology of the network changes very frequently, and this will lead to the failure of the valid route repeatedly. Thus, the process of finding the valid route leads to notable drop in the throughput of the network. To identify a new valid path to the targeted mobile node, available proactive routing protocols use simple broadcasting method known as simple flooding. The simple flooding method broadcasts the RREQ packet from the source to the rest of the nodes in mobile network. But the problem with this method is disproportionate repetitive retransmission of RREQ packet which could result in high contention on the available channel and packet collision due to extreme traffic in the network. A reasonable number of routing algorithms have been suggested for reducing the lethal impact of flooding the RREQ packets. However, most of the algorithms have resulted in considerable amount of complexity and deduce the throughput by depending on special hardware components and maintaining complex information which will be less frequently used. By considering routing complexity with the goal of increasing the throughput of the network, in this paper, we have introduced a new approach called Dynamic Probabilistic Route (DPR) discovery. The Node's Forwarding Probability (NFP) is dynamically calculated by the DPR mobile nodes using Probability Function (PF) which depends on density of local neighbor nodes and the cumulative number of its broadcast covered neighbors.

  11. A Dynamic Probabilistic Based Broadcasting Scheme for MANETs

    Directory of Open Access Journals (Sweden)

    Kannan Shanmugam

    2016-01-01

    Full Text Available MANET is commonly known as Mobile Ad Hoc Network in which cluster of mobile nodes can communicate with each other without having any basic infrastructure. The basic characteristic of MANET is dynamic topology. Due to the dynamic behavior nature, the topology of the network changes very frequently, and this will lead to the failure of the valid route repeatedly. Thus, the process of finding the valid route leads to notable drop in the throughput of the network. To identify a new valid path to the targeted mobile node, available proactive routing protocols use simple broadcasting method known as simple flooding. The simple flooding method broadcasts the RREQ packet from the source to the rest of the nodes in mobile network. But the problem with this method is disproportionate repetitive retransmission of RREQ packet which could result in high contention on the available channel and packet collision due to extreme traffic in the network. A reasonable number of routing algorithms have been suggested for reducing the lethal impact of flooding the RREQ packets. However, most of the algorithms have resulted in considerable amount of complexity and deduce the throughput by depending on special hardware components and maintaining complex information which will be less frequently used. By considering routing complexity with the goal of increasing the throughput of the network, in this paper, we have introduced a new approach called Dynamic Probabilistic Route (DPR discovery. The Node’s Forwarding Probability (NFP is dynamically calculated by the DPR mobile nodes using Probability Function (PF which depends on density of local neighbor nodes and the cumulative number of its broadcast covered neighbors.

  12. S-DARS broadcast from inclined, elliptical orbits

    Science.gov (United States)

    Briskman, Robert D.; Prevaux, Robert J.

    2004-04-01

    The first Sirius spacecraft was launched on July 1, 2000. Exactly 5 months later, on December 1, the third spacecraft was launched, completing the three satellite S-DARS (Satellite Digital Audio Radio Service) constellation. The three satellites are deployed in inclined, elliptical, geosynchronous orbits, which allow seamless broadcast coverage to mobile users in the contiguous US. Terrestrial broadcast repeaters provide service in urban cores. The system is in operation, providing the first ever S-DARS service. The constellation design results in satellite ground tracks over North America with two satellites always above the equator. High elevation look angles from the mobile ground terminals to the satellites minimize performance degradation due to blockage, foliage attenuation and multi-path. The spacecraft were built by Space Systems/Loral using the 1300 bus modified for operation in high inclination orbits. Each spacecraft was launched using a dedicated Russian Proton booster. The satellite payload is a bent pipe repeater using 7.1 GHz for the uplink and 2.3 GHz for the broadcast transmission. The repeater high-power amplification stage consists of 32 Traveling Wave Tube Amplifiers phase combined to yield a total radio frequency output power of nearly 4 kW at saturated operation. The satellite antennas are mechanically steered to maintain the transmit beam centered on the Contiguous United States and the receive beam centered on the uplink earth station located in Vernon Valley, New Jersey. The satellite payload design and performance are described. The principal spacecraft bus systems are described with emphasis on improvements made for operation in the inclined, elliptical geosynchronous orbits.

  13. [HYGIENIC ASSESSMENT OF WORKING CONDITIONS OF EMPLOYEES OF BROADCASTING CENTER].

    Science.gov (United States)

    Kovalenko, A V; Brusentsova, A V; Sokhoshko, I A; Rostikov, V P

    2015-01-01

    Hygienic assessment of working conditions of employees of the Omsk Regional Broadcasting Centre was performed on data of the analysis of materials of certification of workplaces. There were examined materials concerning 65 core profile workplaces, where 130 persons, including 35 women work. There was determined health risk for personnel in dependence on working conditions. The staff was noted to be exposed to the adverse impact of the following factors: chemical, physical (noise, general and local vibration, non-ionizing radiation, microclimate, lighting), severity and intensity ofwork. Class working conditions for 13,5% of workplaces on noise, 35.4% on non-ionizing radiation was assessed as a harmful of the first degree. Lightness indices at 78.5% of the workplaces did not meet the requirements of sanitary norms. At 7.7% of the workplaces levels of hardness of labor were assessed as harmful. The impact of such factors as biological, infrasound, ultrasound, ionizing radiation, aerosols with mainly fibrogenic action, was absent, their assessment was not carried out. Working conditions at 83.1% of workplaces were characterized as hazardous, including at 52.3% of the workplaces where there was established hazard class 3.1, at 30.7% of workplaces--Class 3.2. Among all the factors of occupational environment the largest contribution into the overall assessment of working conditions was made by the lightness factor (50.9%) and non-ionizing radiation (20.6%). The most harmful working conditions have been identified for workplaces of the operator of masthead antenna, engineer of radiocommunications, broadcasting and television, electromechanician of television (radiocommunication), (broadcasting), car driver.

  14. Two-qubit quantum cloning machine and quantum correlation broadcasting

    Science.gov (United States)

    Kheirollahi, Azam; Mohammadi, Hamidreza; Akhtarshenas, Seyed Javad

    2016-11-01

    Due to the axioms of quantum mechanics, perfect cloning of an unknown quantum state is impossible. But since imperfect cloning is still possible, a question arises: "Is there an optimal quantum cloning machine?" Buzek and Hillery answered this question and constructed their famous B-H quantum cloning machine. The B-H machine clones the state of an arbitrary single qubit in an optimal manner and hence it is universal. Generalizing this machine for a two-qubit system is straightforward, but during this procedure, except for product states, this machine loses its universality and becomes a state-dependent cloning machine. In this paper, we propose some classes of optimal universal local quantum state cloners for a particular class of two-qubit systems, more precisely, for a class of states with known Schmidt basis. We then extend our machine to the case that the Schmidt basis of the input state is deviated from the local computational basis of the machine. We show that more local quantum coherence existing in the input state corresponds to less fidelity between the input and output states. Also we present two classes of a state-dependent local quantum copying machine. Furthermore, we investigate local broadcasting of two aspects of quantum correlations, i.e., quantum entanglement and quantum discord, defined, respectively, within the entanglement-separability paradigm and from an information-theoretic perspective. The results show that although quantum correlation is, in general, very fragile during the broadcasting procedure, quantum discord is broadcasted more robustly than quantum entanglement.

  15. Digital video and audio broadcasting technology a practical engineering guide

    CERN Document Server

    Fischer, Walter

    2010-01-01

    Digital Video and Audio Broadcasting Technology - A Practical Engineering Guide' deals with all the most important digital television, sound radio and multimedia standards such as MPEG, DVB, DVD, DAB, ATSC, T-DMB, DMB-T, DRM and ISDB-T. The book provides an in-depth look at these subjects in terms of practical experience. In addition it contains chapters on the basics of technologies such as analog television, digital modulation, COFDM or mathematical transformations between time and frequency domains. The attention in the respective field under discussion is focussed on aspects of measuring t

  16. Security Analysis of Broadcaster Group Key Exchange Protocols

    Institute of Scientific and Technical Information of China (English)

    LI Li; ZHANG Huanguo

    2006-01-01

    Group key exchange protocols are basic protocols to provide privacy and integrity in secure group communication. This paper discusses the security of one type of group key exchange protocols and defines the kind of protocols as broadcaster group protocols. It points out two attacks on this kind of protocols. The first attack can be avoided by using fresh values in each action during one session of the group protocol. The second attack should be related with concrete application. It also proposes a dynamic key agreement protocol as an example of solutions at the last part of the paper.

  17. Use of virtual sets in the broadcasting of major events

    Directory of Open Access Journals (Sweden)

    Cesáreo Fernández Fernández, PhD.

    2011-01-01

    Full Text Available In 2000, the BBC virtual studios expert, Danny Popkin, criticised the television industry for making a poor use of virtual technology. Ten years later the situation has not improved significantly. So far, virtual studios are seen just as good technological tools to save money and time in the production of news, children’s programming, commercials and elections coverage. However, the virtual studio must also enhance realism, improve the presentation of information, and increase entertainment. In order to help broadcasters achieving these goals, this article describes six examples of special television programmes, from 1996 to 2009, which presented some ideas to improve the quality and richness of the audiovisual language.

  18. Weak Serializable Concurrency Control in Real-time Broadcast Environments

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Given the asymmetric communication capabilities in mobile real-time environments, traditional serializability-based approaches are too restrictive, unnecessary, and impractical. Thus propose the use of a new weaker correctness criterion is proposed. This paper first formally defines the new notion of correctness called weak serializability. After the necessary and sufficient conditions for weak serializability are shown, corresponding concurrency control protocol based on this criterion is outlined for real-time broadcast environments. Finally, the simulation results confirmed that the proposed techniques help mobile transactions to meet their deadlines and improve query response time.

  19. Satellite Media Broadcasting with Adaptive Coding and Modulation

    Directory of Open Access Journals (Sweden)

    Georgios Gardikis

    2009-01-01

    Full Text Available Adaptive Coding and Modulation (ACM is a feature incorporated into the DVB-S2 satellite specification, allowing real-time adaptation of transmission parameters according to the link conditions. Although ACM was originally designed for optimizing unicast services, this article discusses the expansion of its usage to broadcasting streams as well. For this purpose, a general cross-layer adaptation approach is proposed, along with its realization into a fully functional experimental network, and test results are presented. Finally, two case studies are analysed, assessing the gain derived by ACM in a real large-scale deployment, involving HD services provision to two different geographical areas.

  20. DVB-S2 inner receiver design for broadcasting mode

    Institute of Scientific and Technical Information of China (English)

    YANG Jian-xiao; WANG Kuang; ZOU Zhi-yong

    2007-01-01

    This paper details on the design of DVB-S2 receivers which is compliant with the broadcasting mode. Special attention is paid to the specific receiver functions necessary to demodulate the received signal. To show the system performance we consider the design of a complete receiver consisting of timing recovery unit, frame synchronization unit, frequency recovery unit and phase recovery unit. The system is easier to hardware implementation comparing with that provided in (ETSI, 2005; Sun et al.,2004). After the performance of the algorithms is analyzed and a quantitative result is given, this allows us to draw conclusions concerning the achievable system performance under realistic complexity assumptions.

  1. Practical IP and telecom for broadcast engineering and operations

    CERN Document Server

    Huffman, Fred

    2004-01-01

    What you need to know to survive, long term. Interests between broadcasters and telecom people are blurring. Technical operations and design engineers in one field are increasingly required to deal with practices and techniques in the other. The problem is expectations and terminology differences aren't recognized until it's too late. Take "Quality of Service." The telecom people specify a percentage of the time that the service is guaranteed to be available. The down time may be very, very small. But, if it occurs during a high-priced commercial in the Super Bowl, it is very, very s

  2. Parametric Design of Outdoor Broadcasting Studio Based on Schema Theory

    Directory of Open Access Journals (Sweden)

    Zhu Li

    2016-01-01

    Full Text Available This paper mainly demonstrates that the schema is an important way for the architect to cognize architecture form logic. It connects schema to algorithm of parametric design in order to seek the “algorithm schema” generation in parametric design of architecture. Meanwhile, this paper discusses the generative process and methods of the “algorithm schema” in parametric design of architecture by describing a case of outdoor broadcasting studio of Hunan Economic Radio. It also reveals the importance of “algorithm schema” for the cognition and architectural form logic generation.

  3. Identity-based Broadcast Encryption with Shorter Transmissions

    Institute of Scientific and Technical Information of China (English)

    ZHANG Le-you; HU Yu-pu; MU Ning-bo

    2008-01-01

    This paper describes two identity-based broadcast encryption (IBBE) schemes for mobile ad hoc networks.The first scheme proposed achieves sub-linear size cipertexts and the second scheme achieves O(1)-size ciphertexts.Furthermore,when the public keys are transmitted,the two schemes have short transmissions and achieve O(1) user storage cost,which are important for a mobile ad hoc network.Finally,the proposed schemes are provable security under the decision generalized bilinear Diffi-Hellman (GBDH) assumption in the random oracles model.

  4. Parallel Interconnection of Broadcast Systems with Multiple FIFO Channels

    Science.gov (United States)

    de Juan Marín, Ruben; Cholvi, Vicent; Jiménez, Ernesto; Muñoz-Escoí, Francesc D.

    This paper proposes new protocols for the interconnection of FIFO- and causal-ordered broadcast systems, thus increasing their scalability. They use several interconnection links between systems, which avoids bottleneck problems due to the network traffic, since messages are not forced to go throughout a single link but instead through the several links we establish. General architectures to interconnect FIFO- and causal-ordered systems are proposed. Failure management is also discussed and a performance analysis is given, detailing the benefits introduced by these interconnection approaches that are able to easily increase the resulting interconnection bandwidth.

  5. Energy Efficient Iterative Waterfilling for the MIMO Broadcasting Channels

    CERN Document Server

    Xu, Jie; Zhang, Shunqing

    2012-01-01

    Optimizing energy efficiency (EE) for the MIMO broadcasting channels (BC) is considered in this paper, where a practical power model is taken into account. Although the EE of the MIMO BC is non-concave, we reformulate it as a quasiconcave function based on the uplink-downlink duality. After that, an energy efficient iterative waterfilling scheme is proposed based on the block-coordinate ascent algorithm to obtain the optimal transmission policy efficiently, and the solution is proved to be convergent. Through simulations, we validate the efficiency of the proposed scheme and discuss the system parameters' effect on the EE.

  6. Quantum broadcasting multiple blind signature with constant size

    Science.gov (United States)

    Xiao, Min; Li, Zhenli

    2016-09-01

    Using quantum homomorphic signature in quantum network, we propose a quantum broadcasting multiple blind signature scheme. Different from classical signature and current quantum signature schemes, the multi-signature proposed in our scheme is not generated by simply putting the individual signatures together, but by aggregating the individual signatures based on homomorphic property. Therefore, the size of the multi-signature is constant. Furthermore, based on a wide range of investigation for the security of existing quantum signature protocols, our protocol is designed to resist possible forgery attacks against signature and message from the various attack sources and disavowal attacks from participants.

  7. Delayed emergence after anesthesia.

    Science.gov (United States)

    Tzabazis, Alexander; Miller, Christopher; Dobrow, Marc F; Zheng, Karl; Brock-Utne, John G

    2015-06-01

    In most instances, delayed emergence from anesthesia is attributed to residual anesthetic or analgesic medications. However, delayed emergence can be secondary to unusual causes and present diagnostic dilemmas. Data from clinical studies is scarce and most available published material is comprised of case reports. In this review, we summarize and discuss less common and difficult to diagnose reasons for delayed emergence and present cases from our own experience or reference published case reports/case series. The goal is to draw attention to less common reasons for delayed emergence, identify patient populations that are potentially at risk and to help anesthesiologists identifying a possible cause why their patient is slow to wake up.

  8. Broadcasting towards Local: Digital local broadcasting put to the test of Midi-Pyrénées (In French)

    OpenAIRE

    Simoulin, Vincent; Audrey VERGNES (LEREPS-GRES)

    2004-01-01

    This paper deals with the difficulties the digital local broadcasting is presently meeting to stand out. Through the study of the audio-visual field in Midi-Pyrénées, it shows that these ones are not only of commercial or technical kind, but are also linked to the lack of a true local governance in this area. However, the analysis also point to a relative blossoming of the local channels, of which some have succeeded in developing either national or even international partnerships, or bonds w...

  9. Evaluation of Topology-Aware Broadcast Algorithms for Dragonfly Networks

    Energy Technology Data Exchange (ETDEWEB)

    Dorier, Matthieu; Mubarak, Misbah; Ross, Rob; Li, Jianping Kelvin; Carothers, Christopher D.; Ma, Kwan-Liu

    2016-09-12

    Two-tiered direct network topologies such as Dragonflies have been proposed for future post-petascale and exascale machines, since they provide a high-radix, low-diameter, fast interconnection network. Such topologies call for redesigning MPI collective communication algorithms in order to attain the best performance. Yet as increasingly more applications share a machine, it is not clear how these topology-aware algorithms will react to interference with concurrent jobs accessing the same network. In this paper, we study three topology-aware broadcast algorithms, including one designed by ourselves. We evaluate their performance through event-driven simulation for small- and large-sized broadcasts (in terms of both data size and number of processes). We study the effect of different routing mechanisms on the topology-aware collective algorithms, as well as their sensitivity to network contention with other jobs. Our results show that while topology-aware algorithms dramatically reduce link utilization, their advantage in terms of latency is more limited.

  10. Automated quality control in a file-based broadcasting workflow

    Science.gov (United States)

    Zhang, Lina

    2014-04-01

    Benefit from the development of information and internet technologies, television broadcasting is transforming from inefficient tape-based production and distribution to integrated file-based workflows. However, no matter how many changes have took place, successful broadcasting still depends on the ability to deliver a consistent high quality signal to the audiences. After the transition from tape to file, traditional methods of manual quality control (QC) become inadequate, subjective, and inefficient. Based on China Central Television's full file-based workflow in the new site, this paper introduces an automated quality control test system for accurate detection of hidden troubles in media contents. It discusses the system framework and workflow control when the automated QC is added. It puts forward a QC criterion and brings forth a QC software followed this criterion. It also does some experiments on QC speed by adopting parallel processing and distributed computing. The performance of the test system shows that the adoption of automated QC can make the production effective and efficient, and help the station to achieve a competitive advantage in the media market.

  11. LQG Control Approach to Gaussian Broadcast Channels with Feedback

    CERN Document Server

    Ardestanizadeh, Ehsan; Franceschetti, Massimo

    2011-01-01

    A code for communication over the k-receiver additive white Gaussian noise broadcast channel with feedback is presented and analyzed using tools from the theory of linear quadratic Gaussian optimal control. It is shown that the performance of this code depends on the noise correlation at the receivers and it is related to the solution of a discrete algebraic Riccati equation. For the case of independent noises, the sum rate achieved by the proposed code, satisfying average power constraint P, is characterized as 1/2 log (1+P*phi), where the coefficient "phi" in the interval [1,k] quantifies the power gain due to the presence of feedback. When specialized to the case of two receivers, this includes a previous result by Elia and strictly improves upon the code of Ozarow and Leung. When the noises are correlated, the pre-log of the sum-capacity of the broadcast channel with feedback can be strictly greater than one. It is established that for all noise covariance matrices of rank r the pre-log of the sum capacit...

  12. RSS based CERN Alerter. Information broadcast to all CERN offices.

    CERN Multimedia

    Otto, R

    2007-01-01

    Nearly every large organization uses a tool to broadcast messages and information across the internal campus (messages like alerts announcing interruption in services or just information about upcoming events). These tools typically allow administrators (operators) to send "targeted" messages which are sent only to specific groups of users or computers, e/g only those located in a specified building or connected to a particular computing service. CERN has a long history of such tools: CERNVMS€™s SPM_quotMESSAGE command, Zephyr and the most recent the NICE Alerter based on the NNTP protocol. The NICE Alerter used on all Windows-based computers had to be phased out as a consequence of phasing out NNTP at CERN. The new solution to broadcast information messages on the CERN campus continues to provide the service based on cross-platform technologies, hence minimizing custom developments and relying on commercial software as much as possible. The new system, called CERN Alerter, is based on RSS (Really Simpl...

  13. Frequency allocations for a new satellite service - Digital audio broadcasting

    Science.gov (United States)

    Reinhart, Edward E.

    1992-03-01

    The allocation in the range 500-3000 MHz for digital audio broadcasting (DAB) is described in terms of key issues such as the transmission-system architectures. Attention is given to the optimal amount of spectrum for allocation and the technological considerations relevant to downlink bands for satellite and terrestrial transmissions. Proposals for DAB allocations are compared, and reference is made to factors impinging on the provision of ground/satellite feeder links. The allocation proposals describe the implementation of 50-60-MHz bandwidths for broadcasting in the ranges near 800 MHz, below 1525 MHz, near 2350 MHz, and near 2600 MHz. Three specific proposals are examined in terms of characteristics such as service areas, coverage/beam, channels/satellite beam, and FCC license status. Several existing problems are identified including existing services crowded with systems, the need for new bands in the 1000-3000-MHz range, and variations in the nature and intensity of implementations of existing allocations that vary from country to country.

  14. Analysis of stress, musculoskeletal disorders, and fatigue among broadcasting actors.

    Science.gov (United States)

    Park, Moon-Hee; Kim, Ham-Gyum; Lee, Hae-Kag

    2016-11-01

    [Purpose] The purpose of the study was to assess the health effects of broadcasting actors through a comprehensive research on their job stress, psychosocial stress, and fatigue and to investigate those factors having an impact on their health condition to present a basis for comparative studies and effective human resource management in the future. [Subjects and Methods] A survey was performed to analyze the relevance of the general features, job stress, psychosocial stress, and fatigue. [Results] Analysis of job stress, one of the characteristics of individuals, revealed that 32.4% of the subjects with less than 5 years of service, 55.5% of those with 6 to 10 years of service, and 52.4% of those with more than 10 years of service showed a high level of stress. Analysis of psychosocial stress, another characteristic of individuals, revealed that 13.4% of the nonsmokers had a high level of psychosocial stress, while 37.7% of smokers had a high level of psychosocial stress based on analysis of chronic disease and psychosocial health. [Conclusion] Based on this study of the stress and fatigue of broadcasting actors, it is expected that improvements can be made to promote their mental health conditions and, organizational safety and to promote effective human resource management.

  15. 广播音频制播网络系统的安全性设计%Safe Design of Production and Broadcasting Network System ahout Broadcasting Audio

    Institute of Scientific and Technical Information of China (English)

    王文举; 袁正义

    2014-01-01

    Safety broadcasting is the lifeline of radio and television,the broadcasting network system uses the advanced network se-curity technologies,building well-functioning, leading Technology soft and hardware platform,ensuring the safe operation of ra-dio business,safe design of network system greatly guarantees the security of production and broadcasting network system ahout broadcasting audio.%安全播出是广播电视的生命线,该制播网络系统利用先进的网络安全技术,建设功能完善、技术领先的软、硬件支撑平台,保障电台各项业务的安全运行,网络系统的安全性设计大大保障了广播音频制播网络系统的安全。

  16. 47 CFR 74.780 - Broadcast regulations applicable to translators, low power, and booster stations.

    Science.gov (United States)

    2010-10-01

    ..., filmed or recorded material. Section 73.1211—Broadcast of lottery information. Section 73.1212—Sponsorship identifications; list retention, related requirements. Section 73.1216—Licensee conducted contests... (STA). Section 73.1650—International broadcasting agreements. Section 73.1680—Emergency...

  17. 78 FR 75563 - Commission Policies and Procedures Under the Communications Act, Foreign Investment in Broadcast...

    Science.gov (United States)

    2013-12-12

    ... discretion to permit foreign ownership interests in entities that control the licensees of broadcast radio or... ownership in broadcast licensees to 25 percent. CBI member Adelante Media Group states that imposition of..., Alien Ownership and Control (Oct. 2012) (available at http://transition.fcc.gov/Forms/Form314/314.pdf...

  18. Hard Content, Fab Front-End : Archiving Websites of Dutch Public Broadcasters

    NARCIS (Netherlands)

    Baltussen, L; Blom, J; Medjoune, L; Pop, R; van Gorp, Jasmijn; Huurdeman, H; Haaijer, L

    2014-01-01

    Although there are a great variety of web archiving projects around the world, there are not many that focus explicitly on websites of broadcasters. The reason is that funds are often lacking to do this, and that broadcaster websites are difficult to archive, due to their dynamic and audiovisual con

  19. Feedback Halves the Dispersion for Some Two-User Broadcast Channels with Common Message

    DEFF Research Database (Denmark)

    Trillingsgaard, Kasper Fløe; Yang, Wei; Durisi, Giuseppe;

    2017-01-01

    We investigate the maximum coding rate achievable on a two-user broadcast channel for the case where a common- message is transmitted using fixed-blocklength codes with feed- back. Specifically, we focus on a family of broadcast channels com- posed of two antisymmetric Z-channels. For this setup...

  20. Broadcast Evaluation Report Number Four: Industrial Chemistry Component 524: TV7 R3.

    Science.gov (United States)

    Gallagher, Margaret

    The Institute of Educational Technology of the British Open University evaluated an Open University broadcast course in the chemistry of carbon compounds. Industrial chemistry was a separate but parallel component of the course which was presented by television and radio broadcast. Questionnaires, telephone interviews, and group discussions were…