scholarly journals Long‐Term Evolution of Sand Transport Through a River Network: Relative Influences of a Dam Versus Natural Changes in Grain Size From Sand Waves

2018 ◽  
Vol 123 (8) ◽  
pp. 1879-1909 ◽  
Author(s):  
David J. Topping ◽  
Erich R. Mueller ◽  
John C. Schmidt ◽  
Ronald E. Griffiths ◽  
David J. Dean ◽  
...  
Keyword(s):  
Grain Size ◽  
Long Term Evolution ◽  
River Network ◽  
Sand Transport ◽  
Sand Waves ◽  
Term Evolution

scholarly journals LONG-TERM EVOLUTION OF SAND AND GRAVEL BEACHES ON THE MIYAZAKI COAST

2011 ◽  
Vol 1 (32) ◽  
pp. 57 ◽  
Author(s):  
Shinji Sato ◽  
Shun Kishimoto ◽  
Haruna Hiramatsu
Keyword(s):  
Long Term Evolution ◽  
Northern Region ◽  
Sand Transport ◽  
Sediment Retention ◽  
Sediment Size ◽  
Term Evolution ◽  
Severe Erosion ◽  
Steep Topography ◽  
Sand And Gravel

Long-term evolution of Miyazaki Coast was investigated in terms of four aspects, geology and geography, comparison of shoreline in available maps and photographs, sediment retention analysis in watershed scale and sediment size as well as luminescence measurements of foreshore sediments. Geological and geographical analysis revealed steep topography in northern part and fluvial plain on the southern part. The total rate of sediment retention in reservoirs was found to be as much as 1.9 million m3/year. Historical shoreline retreat in the recent 200 years was significant in the northern region whereas severe erosion was developed in the last decades on the southern region close to the rivermouths of the Hitotsuse River and the Ooyodo River. The sand grain size and the thermoluminescence intensity were both found to decrease from north to south, implying the dominant direction of longshore sand transport is from north to south.

Long-term evolution of sand waves in the Marsdiep inlet. II: Relation to hydrodynamics

2008 ◽  
Vol 28 (9) ◽  
pp. 1202-1215 ◽  
Author(s):  
Maarten C. Buijsman ◽  
Herman Ridderinkhof
Keyword(s):  
Long Term Evolution ◽  
Sand Waves ◽  
Term Evolution

scholarly journals EFFECT OF SAND BYPASSING AT SAKUMA DAM IN TENRYU RIVER AS A MEASURE AGAINST EROSION OF TENRYU RIVER DELTA COAST

2011 ◽  
Vol 1 (32) ◽  
pp. 106 ◽  
Author(s):  
Shiho Miyahara ◽  
Takaaki Uda ◽  
Kou Furuike ◽  
Masumi Serizawa ◽  
Toshiro San-nami ◽  
...  
Keyword(s):  
Grain Size ◽  
Sediment Yield ◽  
Sandy Beach ◽  
River Mouth ◽  
Long Term Evolution ◽  
Sandy Beaches ◽  
River Delta ◽  
Change Model ◽  
Term Evolution

The long-term evolution of the Tenryu River delta associated with sand bypassing at several dams is investigated using the contour-line-change model considering the change in grain size. The effect of the increase in sediment yield from the river mouth on the nearby coasts is numerically predicted. When the sediment yield is artificially increased, the supplied sediment is mainly deposited around the river mouth, resulting in a large shoreline advance, but it takes a longer time for a sandy beach far from the river mouth to recover. Another measure, such as sand bypassing of the coast, is required to recover sandy beaches downcoast.

Link-Level Simulator for Wireless local Area Network

2018 ◽  
Vol 6 (7) ◽  
pp. 314
Author(s):  
Chaithra. H. U ◽  
Vani H.R
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area Networks ◽  
Local Area ◽  
Long Term Evolution ◽  
Wireless Local Area Networks ◽  
Area Network ◽  
Network Simulator ◽  
Term Evolution

Now a days in Wireless Local Area Networks (WLANs) used in different fields because its well-suited simulator and higher flexibility. The concept of WLAN  with  advanced 5th Generation technologies, related to a Internet-of-Thing (IOT). In this project, representing the Network Simulator (NS-2) used linked-level simulators for Wireless Local Area Networks and still utilized IEEE 802.11g/n/ac with advanced IEEE 802.11ah/af technology. Realization of the whole Wireless Local Area Networking linked-level simulators inspired by the recognized Vienna Long Term Evolution- simulators. As a outcome, this is achieved to link together that simulator to detailed performances of Wireless Local Area Networking with Long Term Evolution, operated in the similar RF bands. From the advanced 5th Generation support cellular networking, such explore is main because different coexistences scenario can arise linking wireless communicating system to the ISM and UHF bands.

Simulación de cobertura del modelo de radio propagación 3GPP para un entorno urbano en una red 4G – LTE

2013 ◽  
Vol 8 (15) ◽  
pp. 33-40
Author(s):  
Javier Enrique Arévalo Peña
Keyword(s):  
Long Term Evolution ◽  
Term Evolution ◽  
Nuevas Tecnologías ◽  
4G Lte ◽  
3Rd Generation Partnership Project

En la planeación de las próximas generaciones de redes inalámbricas es importante contar con estudios de radio propagación que permitan establecer diseños adecuados para ofrecer los servicios proyectados por las nuevas tecnologías a los usuarios móviles. En este artículo se presentan aspectos relacionados con el comportamiento de cobertura de radio propagación del modelo propuesto por el 3GPP (3rd Generation Partnership Project) para un entorno urbano en una red LTE (Long Term Evolution) empleando sistemas de antenas convencionales y sistemas de antena adaptativas (AAS). Para ello se utiliza la herramienta de software ICS Designer y se establece como escenario los alrededores la Fundación Universidad Autónoma de Colombia ubicada en el centro urbano de la ciudad de Bogotá D. C.

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