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K-FACTOR: 作品数：33被引量：15H指数：2; 导出分析报告; 相关领域：理学更多>>; 相关作者：周丹琪乔国平张泉方高晓明薛秀谦更多>>; 相关机构：东莞市大忠电子有限公司浙江大学江南计算技术研究所上海建筑设计研究院有限公司更多>>; 相关期刊：《Science China Mathematics》《Acta Mathematicae Applicatae Sinica》《Open Journal of Radiology》《Acta Mathematica Scientia》更多>>; 相关基金：国家自然科学基金国家社会科学基金国家重点基础研究发展计划河北省自然科学基金更多>>

Sharp Isolated Toughness Bound for Fractional(k,m)-Deleted Graphs: 《Acta Mathematicae Applicatae Sinica》2025年第1期252-269,共18页Wei GAO Wei-fan WANG Yao-jun CHEN; supported by the National Science Foundation of China(Nos.12161094,12031018,11871270,12161141003and11931006).; A graph G is a fractional(k,m)-deleted graph if removing any m edges from G,the resulting subgraph still admits a fractional k-factor.Let k≥2 and m≥1 be integers.Denote[2m/k]^(*)=[2m/k]if 2m/k is not an integer,and[...; 关键词：GRAPH isolated toughness fractional k-factor fractional(k m)-deleted graph

Integration of RUSLE Model with Remote Sensing and GIS Tools for Soil Loss Estimation in the Kubanni Drainage Basin, Zaria, Nigeria: 《Journal of Geoscience and Environment Protection》2024年第11期173-190,共18页Kenneth Onyemauche Ezenwa Reuben Jobien Jacob Sadiq Abdullahi Yelwa; The prevalence of unwholesome land use practices and population pressure exacerbates soil loss which is worsening the problem of sedimentation of the Kubanni dam. This study was conducted at the Kubanni drainage basin...; 关键词：Soil Loss Watershed Erosivity (R-Factor) Erodibility (K-Factor) Cover Management Factor (C-Factor) Slope Length and Steepness Factor (LS-Factor) Support Practice Factor (P-Factor)

Binding Number and Fractional k-Factors of Graphs: 《Journal of Applied Mathematics and Physics》2024年第7期2594-2600,共7页Renying Chang; In this paper, we consider the relationship between the binding number and the existence of fractional k-factors of graphs. The binding number of G is defined by Woodall as bind(G)=min{ | NG(X) || X |:∅≠X⊆V(G) }. It ...; 关键词：Binding Number Fractional k-Factor Fractional Matching Independent Set Covering Set

数据中心变压器K-factor工程计算方法简析: 《建筑电气》2023年第8期46-52,共7页高晓明王谋锐; 由K-factor的定义推导其计算公式,并介绍K-factor工程计算方法——采用分类叠加方法对谐波进行简化计算。结合数据中心工程实例给出计算结果并对其进行分析,提出相关注意点,并在此基础之上提出降低数据中心谐波对变压器影响的措施和建议。; 关键词：变压器 K-FACTOR 计算方法谐波电流谐波电流含有率谐波源分类数据中心叠加计算

The Refractive Effect of k-Factor on Radio Propagation over Lokoja, Nigeria: 《Journal of Electronic & Information Systems》2023年第1期45-50,共6页Akinsanmi Akinbolati Florence N.Ikechiamaka Akogwu O.Isaiah; The effective earth radius factor(k-factor)has a refractive propagation effect on transmitted radio signals thus making its study necessary for the proper planning of terrestrial radio links and power budget.This stud...; 关键词：Effective earth radius factor(k-factor) Refractive effect Terrestrial radio link Radio signal Power budget

The USLE soil erodibility nomograph revisited: 《International Soil and Water Conservation Research》2023年第1期1-13,共13页Eva Corral-Pazos-de-Provens ígor Rapp-Arraras Juan M.Domingo-Santos; The nomograph by Wischmeier et al.(1971)for calculating the K-factor in the USLE was extremely useful when there was low access to calculators.However,the generalised calculation of this factor requires the developmen...; 关键词：K-FACTOR RUSLE Soil texture Organic matter Very find sand Soil loss prediction

在用仪表系数在原油动态计量中的应用: 《中国石油和化工标准与质量》2022年第18期114-116,共3页王庆新; K-Factor线性化可以提高流量计计量的准确度,在用仪表系数在K-Factor分段线性化的基础上可以补偿每批次原油贸易交接计量中因密度、粘度、温度、压力等因素变动导致的计量特性发生变化,进一步提高计量准确度的同时可及时发现处于检定有...; 关键词：仪表系数线性化在用仪表系数 Meter Factor Meter Factor in use K-FACTOR

Modelling soil erodibility in mountain rangelands of southern Kyrgyzstan被引量：1: 《Pedosphere》2020年第4期443-456,共14页Maksim KULIKOV Udo SCHICKHOFF Alexander GRONGROFT Peter BORCHARDT; a part of a joint Kyrgyz-German research project “The Impact of the Transformation Process on Human-Environment Interactions in Southern Kyrgyzstan”, funded by the Volkswagen Foundation, Germany, which had no impact on research or result dissemination; Soil erosion in mountain rangelands in Kyrgyzstan is an emerging problem due to vegetation loss caused by overgrazing. It is further exacerbated by mountain terrain and high precipitation values in Fergana range in th...; 关键词：channel network base level K-FACTOR LANDSAT RUSLE soil enhancement ratio soil mapping slope TERRAIN

Remarks on Fractional ID-k-factor-critical Graphs被引量：1: 《Acta Mathematicae Applicatae Sinica》2019年第2期458-464,共7页Si-zhong ZHOU Lan XU Zu-run XU; supported by the National Natural Science Foundation of China(Grant No.11371009,11501256,61503160);Six Big Talent Peak of Jiangsu Province(Grant No.JY–022);333 Project of Jiangsu Province;the National Social Science Foundation of China(Grant No.14AGL001);the Natural Science Foundation of Xinjiang Province of China(Grant No.2015211A003);the Natural Science Foundation of the Higher Education Institutions of Jiangsu Province(Grant No.14KJD110002); Let G be a graph, and k a positive integer. A graph G is fractional independent-set-deletable k-factor-critical(in short, fractional ID-k-factor-critical) if G-I has a fractional k-factor for every independent set I o...; 关键词：GRAPH NEIGHBORHOOD minimum degree FRACTIONAL K-FACTOR FRACTIONAL ID-k-factor-critical GRAPH

Wireless Channel Measurements and Modeling of LTE Broadband System for High-Speed Railway Scenarios: 《Chinese Journal of Electronics》2018年第5期1092-1097,共6页ZHAO Hua LYU Qing LIU Yachuan CHEN Jiaxing ZHANG Shujing; supported by the National Natural Science Foundation of China(No.61501168,No.61771181,No.61701165);Technology Foundation for Selected Overseas Chinese Scholar of Hebei Province(No.C2015005016);Hebei Province Education Office Foundation(No.QN2015030,No.QN2016100);Hebei Normal University Youth Foundation(No.L2015Q09,No.L2015Q12); In high-speed scenarios, channel model is of vital importance in Long term evolution(LTE) systems.By extensive measurements on Beijing-Tianjin railway, this paper proposes a distance-dependent channel model. Both larg...; 关键词：Distance-dependent channel model High-speed railway LTE system K-FACTOR Delay spread

K-FACTOR