نتایج جستجو برای: direction

تعداد نتایج: 152326  

Journal: :The Annals of Statistics 1992

Journal: :SSRN Electronic Journal 2008

Journal: :Journal of learning Analytics 2023

Learning analytics defines itself with a focus on data from learners and learning environments, corresponding goals of understanding optimizing student learning. In this regard, research, ideally, should be characterized by studies that make use engaged in education systems, measure learning, efforts to intervene improve these environments. However, common concern among members the research com...

Journal: :Scholarpedia 2009

Journal: :Science 1892

Journal: :Journal of Navigation 1969

Journal: :Studies in Second Language Acquisition 2018

2006
M. A. S. Mayrink F. J. S. Moreira C. G. Rego L. A. R. Silva Mello

In this paper, the principal objective is to validate a new approach for the field-strength estimate in VHF and UHF radio links partially over water. The method is compared with measurements conducted in the cities of Belo Horizonte, MG, and Braslia, DF, Brazil. The approach is based on physical insights applied in the Recommendation ITU-R P.1546-2 mixed path treatment. The results show good ag...

Journal: :EURASIP J. Wireless Comm. and Networking 2008
Duckdong Hwang Junmo Kim Sungjin Kim

A joint power and time slot partitioning scheme based on the channel status information (CSI) is proposed for networks of multiple relays using decode and forward (DF) protocol. A set of power constraints for the famous water pouring method is presented depending on the time slot partitioning and CSI. Optimizing the timing and the power distributions enhances the network throughput in addition ...

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