Results 61 to 70 of about 1,337,989 (232)
Sum Capacity for Single-Cell Multi-User Systems with M-Ary Inputs
Entropy, 2017 This paper investigates the sum capacity of a single-cell multi-user system under the constraint that the transmitted signal is adopted from M-ary two-dimensional constellation with equal probability for both uplink, i.e., multiple access channel (MAC ...
Pei Yang +3 more
doaj +1 more source
Food Safety and Health, EarlyView.Biosensors enable rapid, sensitive, and portable detection of pathogens, contaminants, allergens, and food adulteration. Integration with smart packaging, smartphones, IoT, and machine learning supports real‐time monitoring and intelligent decision‐making, whereas microfluidics, biodegradable materials, explainable AI, and blockchain offer pathways ...
Mohima Akther Any +7 more
wiley +1 more source
Efficient broadcast transmission algorithms based on opportunistic network coding
Tongxin xuebao, 2012 Opportunistic network coding (ONC) based broadcast transmission algorithms were proposed to improve the transmission efficiency for wireless single-hop networks.Based on the traditional wireless broadcast transmission model,ONC based solo combination ...
Ji LU, Cheng-ke WU, Song XIAO, Ran ZHANG
doaj +2 more sources
IEEE Access, 2020 In this paper, we consider a power allocation optimization technique for a time-varying fading broadcast channel in energy harvesting communication systems, in which a transmitter with a rechargeable battery transmits messages to receivers using the ...
Heasung Kim +6 more
doaj +1 more source
Food Security Versus Environmental Health: The Nitrogen Dilemma
Journal of Plant Nutrition and Soil Science, EarlyView.ABSTRACT Nitrogen is an essential element for plant growth and, consequently, crop production. However, the cycling of nitrogen in the environment can have negative effects. Here, we review the historical development of scientific and public awareness of these effects and the influence this has had on political action to control them.
Henrike Mielenz +8 more
wiley +1 more source
Nonconcave Utility Maximisation in the MIMO Broadcast Channel
EURASIP Journal on Advances in Signal Processing, 2008 The problem of determining an optimal parameter setup at the physical layer in a multiuser, multiantenna downlink is considered. An aggregate utility, which is assumed to depend on the users' rates, is used as performance metric.
Wolfgang Utschick, Johannes Brehmer
doaj +1 more source
JEADV Clinical Practice, EarlyView.ABSTRACT Oculocutaneous albinism (OCA) is a genetic disorder found worldwide, but its impact is particularly pronounced in the African continent. This results from both a higher prevalence and the persistent myths and superstitions surrounding the condition in many African communities.
Rebecca Donadoni +3 more
wiley +1 more source
, 2012 Siberian Tiger is a satirical video piece by artist Richard Billingham about consumption and the demise of the Siberian Tiger of which there are about 400 remaining in the wild. It was commissioned by Jacqui Davies (who was also the producer) and FACT in
Billingham, Richard +4 more
core +3 more sources
Land Degradation &Development, EarlyView.ABSTRACT Riparian zones in Mediterranean agroecosystems are highly vulnerable to degradation because cultivation often reaches stream edges and annual vegetation senesces during the late‐summer dry period, leaving soils exposed when the first erosive autumn rains occur.
Marcelo Sternberg +4 more
wiley +1 more source
A Broadcast Vehicle to Vehicle Communication System in Railway Environment [PDF]
, 2008 Current statistics in railway transportation systems show that the number of accidents is still too high, despite of huge investments in infrastructure-based safety systems.
Rico Garcia, Cristina +2 more
core