Precipitation and air temperature data, only, are often recorded at meteorological stations, with radiation beingmeasured at very few weather stations, especially in developing countries. Therefore there arises a need for suitablemodels to estimate solar radiation for a completion of data sets. This paper is about an evaluation of eight models foran estimation of daily solar radiation (Q) from ...

The occurrence of catastrophic floods will increase the uncertainty hydrological forecasting at downstream stations. In order to solve problems unclear propagation law in middle and lower reaches Yangtze River inadaptability traditional methods, this paper uses M-K trend test method analyze annual average flow water level Yichang Hankou For conventional floods, Random Forest (RF), Convolutional...

Orthogonal frequency division multiple access (OFDMA) technology has been adopted by 4th generation (a.k.a. 4G) telecommunication systems to achieve high system spectral efficiency. A crucial research issue is how to design adaptive channel quality indicator (CQI) feedback mechanisms so that the base station can use adaptive modulation and coding (AMC) techniques to adjust its data rate based o...

The objectives of this project are; to demonstrate that hydrographic variability in shelf waters can be hind-cast, to a quantifiable degree, using a simple 1 dimensional physical model. To demonstrate that the model can be used to interpret the regional variability of ocean colour in terms of the mechanisms of physical forcing on phytoplankton growth. The effects of tidal front dynamics and the...

The media and TV world faces new challenges such as the introduction of digital and interactive TV. In order to cope with the complexity of these new services, a well-structured back office is of prime importance. Today, efficient management of content is hampered by the proprietary formats used in the different software applications that have been developed by various vendors. Moreover, the la...

These paper introduces a reservation subframe protocol for multimedia services in a 3rd generation mobile telecommunication system. The Packet Reservation Multiple Access (PRMA) protocol is modified to achieve more efficient bandwidth management. Simulation results show that the resulting multiple access multimedia system can serve a large number of users with low probability of packet loss, en...

First posted June 14, 2023 For additional information, contact: Director, Central Midwest Water Science CenterU.S. Geological Survey405 North GoodwinUrbana, IL 61801Contact Pubs Warehouse Two stations on the Galena River in Illinois were monitored for nitrogen, phosphorus, and suspended sediment from 2019 to 2021 determine physiochemical properties constituent concentrations, flux, yields. This...