Results 1 to 10 of about 25,286,152 (94)

Effects of Soil Properties on K Factor in the Granite and Limestone Regions of China. [PDF]

open access: yesInt J Environ Res Public Health, 2020
Soil erosion has become a serious ecological problem in many catchments. Soil erodibility K factor can be estimated based on a series of soil properties, however, the identification of dominant soil properties that affect K factor prediction at different
Liu M   +5 more
europepmc   +2 more sources

Spectral radius and k-factor-critical graphs [PDF]

open access: yesJournal of Supercomputing, 2023
For a nonnegative integer k, a graph G is said to be k-factor-critical if G-Q\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek}
Sizhong Zhou, Zhiren Sun, Yuli Zhang
semanticscholar   +1 more source

Some degree conditions for 𝒫≥k-factor covered graphs

open access: yesRAIRO Oper. Res., 2021
A spanning subgraph of a graph G is called a path-factor of G if its each component is a path. A path-factor is called a 𝒫≥k-factor of G if its each component admits at least k vertices, where k ≥ 2. (Zhang and Zhou, Discrete Math.
Guowei Dai   +3 more
semanticscholar   +1 more source

Semi‐Analytical Model of the Rician K‐Factor

open access: yesRadio Science, 2020
The analysis of the performance of 5G wireless communication systems employing Massive MIMO at millimeter‐wave frequencies is of great practical relevance. Of special relevance are the signal fluctuations.
A. Alayón Glazunov   +3 more
semanticscholar   +1 more source

Estimation of the K-Factor for Temporal Fading From Single-Snapshot Wideband Measurements

open access: yesIEEE Transactions on Vehicular Technology, 2019
The Ricean K-factor is the ratio of the power of the deterministic multipath component (MPC) and the power of all other stochastic MPCs. The classical moment-based method has been successfully used to estimate the K-factor from time series measurements ...
Pan Tang   +5 more
semanticscholar   +1 more source

Rician ${K}$ -Factor-Based Analysis of XLOS Service Probability in 5G Outdoor Ultra-Dense Networks [PDF]

open access: yesIEEE Wireless Communications Letters, 2018
In this letter, we introduce the concept of Rician ${K}$ -factor-based radio resource and mobility management for fifth generation (5G) ultra-dense networks (UDN), where the information on the gradual visibility between the new radio node B and the user
Hatim Chergui   +2 more
semanticscholar   +1 more source

Improvement of the K-Factor of USLE and Soil Erosion Estimation in Shihmen Reservoir Watershed

open access: yesSustainability, 2019
The estimation of soil erosion in Taiwan and many countries of the world is based on the widely used universal soil loss equation (USLE), which includes the factor of soil erodibility (K-factor).
B. Lin   +4 more
semanticscholar   +1 more source

USLE K-Factor Method Selection for a Tropical Catchment

open access: yesSustainability, 2019
The use of the Universal Soil Loss Equation (USLE) and the Sediment Delivery Ratio (SDR) facilitates sediment yield (SY) estimates in watersheds. However, the soil loss predictions are frequently unrealistic because of the methods used to estimate the ...
Valter S. Marques   +6 more
semanticscholar   +1 more source

Neighborhood Conditions for Fractional ID-k-factor-critical Graphs

open access: yesActa Mathematicae Applicatae Sinica (English Series), 2018
Let G be a graph and k ≥ 2 a positive integer. Let h: E(G) → [0, 1] be a function. If ∑e∍xh(e)=k\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs ...
Sizhong Zhou, Zhiren Sun
semanticscholar   +2 more sources

A Spatially Consistent MIMO Channel Model With Adjustable K Factor

open access: yesIEEE Access, 2019
In the area of research on massive multiple-input multiple-output (MIMO), two assumptions on the wireless channel dominate channel modeling. Either, a rich scattering environment is assumed and the channel is modeled as i.i.d. Rayleigh fading, or, a line
Stefan Pratschner   +6 more
semanticscholar   +1 more source

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