Hops
Mostrando 13-24 de 39 artigos, teses e dissertações.
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13. Transição entre os comportamentos estendido e localizado em caminhadas estocásticas parcialmente auto-repulsivas em sistemas desordenados unidimensionais / Transition between the extended and localized regimes in stochastic partially self-avoiding walks in one-dimensional disordered systems
Consider $N$ sites randomly and uniformly distributed in a $d$-dimensional hypercube. A walker explores this disordered medium going to the nearest site, which has not been visited in the last $\mu$ (memory) steps. The walker trajectory is composed of a transient part and a periodic part (cycles). In this case, travelers can or cannot explore all available s
Publicado em: 2009
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14. Eficiencia de informação agregada e atraso de pacote em redes ad hoc sem fio / Aggregate information efficiency and packet delay in wireless ad hoc networks
The inherent characteristics of ad hoc networks such as the lack of infrastructure and the possibility of multi-hop links require performance measures that capture the relationships between physical layer, medium access control and link layer. Based on aggregate information efficiency metric and packet delay, trade-offs involving several networks variables a
Publicado em: 2008
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15. Uma alternativa a inundação baseada em tabelas de dispersão para planos de controle de redes opticas / A hash table based flooding alternative for optical networks control plane
The transport layer structure of the Internet is moving towards a model of highspeed routers interconnected by intelligent optical core networks. A consensus has been reached on wavelength division multiplexing (WDM) as the way to increase the transmission capacity. However there are few proposals for distributed control planes under dynamic Quality of Servi
Publicado em: 2008
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16. Multi-K: a routing protocol for wireless sensor networks using partial spanning trees / Multi-K: Um protocolo de roteamento para redes de sensores sem fio usando árvores de espalhamento parcias
Este trabalho apresenta uma versão modifcada do protocolo de disseminação de dados Multi, para rede de sensores sem fio (RSSF), chamado Multi-K. Uma RSSF é uma rede formada por um conjunto de dispositivos autônomos distribuídos que usam sensores para monitorar de forma cooperativa as condições físicas ou ambientais. O Multi é um protocolo adaptativ
Publicado em: 2007
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17. m estudo sobre o uso da codificação de canal para otimização do consumo de energia em redes de sensores
Wireless Sensor Networks (WSN) are a set of tiny electronic devices, which monitor physical phenomena over a specific region and send this data to a sink node. The sensor nodes connect to the other ones in the range of the transmitted signal, establishing a collaborative network operation. The collected data are forwarded to other nodes until the sink is rea
Publicado em: 2007
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18. Métodos integrados para organização de redes de sensores sem fio com sorvedouro móvel e controle de densidade
In this work we present two new methods for organization of Wireless Sensor Network (WSN). These methods integrate the density control and sink mobility to optimize some important WSN metrics. In traditional methods, with multi-hop communication, the message routing process is pointed, by some authors, as the largest energy consumer. To reduce the routing en
Publicado em: 2007
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19. Estrategias evolutivas para a rede optica a partir de aneis WDM
When evolving from SDH/SONET synchronous network infrastructures, WDM networks tend to be initially configured in the same physical topology as their client networks: the ring. The fast growth of high-speed traffic volumes that characterize modern networks, however, is expected to drive the evolution of this topology. Growing the fiber plant by adding up mor
Publicado em: 2002
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20. Fundamentals of beer and hop chemistry
Beer brewing is an intricate process encompassing mixing and further elaboration of four essential raw materials, including barley malt, brewing water, hops and yeast. Particularly hops determine to a great extent typical beer qualities such as bitter taste, hoppy flavour, and foam stability. Conversely, hop-derived bitter acids account for an offending ligh
Química Nova. Publicado em: 2000-02
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21. The Major Role of the Rab Ypt7p in Vacuole Fusion Is Supporting HOPS Membrane Association*♦
Yeast vacuole fusion requires soluble N-ethylmaleimide-sensitive factor attachment protein receptors (SNAREs), the Rab GTPase Ypt7p, vacuolar lipids, Sec17p and Sec18p, and the homotypic fusion and vacuole protein sorting complex (HOPS). HOPS is a multisubunit protein with direct affinities for SNAREs, vacuolar lipids, and the GTP-bound form of Ypt7p; each o
American Society for Biochemistry and Molecular Biology.
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22. The molecular structure of hop latent viroid (HLV), a new viroid occurring worldwide in hops.
A new viroid which does not seem to produce any symptoms of disease, and is therefore tentatively named hop latent viroid (HLV) was found to occur worldwide in hops. HLV proved to be infectious when mechanically inoculated onto viroid- and virus-free hops. The viroid nature of HLV was also substantiated by sequence analysis which revealed that HLV is a circu
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23. LUPULON AND HUMULON—ANTIBIOTIC CONSTITUENTS OF HOPS 1
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24. A Ypt/Rab effector complex containing the Sec1 homolog Vps33p is required for homotypic vacuole fusion
Yeast vacuoles undergo priming, docking, and homotypic fusion, although little has been known of the connections between these reactions. Vacuole-associated Vam2p and Vam6p (Vam2/6p) are components of a 65S complex containing SNARE proteins. Upon priming by Sec18p/NSF and ATP, Vam2/6p is released as a 38S subcomplex that binds Ypt7p to initiate docking. We n
The National Academy of Sciences.