Results 21 to 30 of about 120,013 (263)
Dizhen xuebao, 2022 针对低信噪比条件下微震初至拾取准确度低的问题，基于信号幅度变化引入权重因子，对传统长短时窗比值（STA/LTA）算法进行改进，提高初次拾取精度。为了进一步降低拾取误差，对变分模态分解（VMD）算法进行优化，基于互相关系数和排列熵准则自适应确定VMD分解层数，对初次拾取结果前后2—3 s的记录进行优化VMD，并计算分解后各本征模函数（IMF）的峰度赤池信息准则值，得到各IMF的到时，以各IMF的拾取结果及能量比综合加权得到二次拾取到时。仿真实验表明：改进后的STA ...
Juan Meng, Yanxiong Wu, Yanan Li
doaj +1 more source
Verbum et Ecclesia, 2023 No abstract available.
Kasebwe T.L. Kabongo, Juliane Stork
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The Probabilistic Analysis of Drought Severity- Duration in North Khorasan Province using Copula Functions [PDF]
پژوهشهای آبخیزداری, 2023 Introduction and Objective Droughts have a set of negative environmental, social and economic effects in a region or country. Using a monthly index and its analysis that, in addition to precipitation values, takes into account the effect of evaporation ...
Mehdi Teimouri +2 more
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Modeling with generalized linear model on covid-19: Cases in Indonesia
International Journal of Electronics and Communications System, 2021 The ongoing Covid-19 outbreak has made scientists continue to research this Covid-19 case. Most of the research carried out is on the prediction and modeling of Covid-19 data. This study will also discuss Covid-19 data modeling.
Subian Saidi +2 more
doaj +1 more source
An Investigation of Vegetable Production in Iran by Using Time Series Models
Fundamental and Applied Agriculture, 2021 BACKGROUND: Nowadays, agriculture, particularly vegetable production, plays a vital role in the lives of the people of the Islamic Republic of Iran. The proper forecast of harvesting of vegetable production is essential for the agriculture ministry; so ...
Zeynab Latifi, Hossein Shabanali Fami
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Statistics & Probability Letters, 2021 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Timothy DelSole, Michael K. Tippett
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African Journal of Emergency Medicine, 2023 Emergency care system (ECS) performance is a proxy indicator of emergency care (EC) response and health systems resilience. The Emergency Care and System Assessment tool (ECSA) provides a structure for measuring emergency department (ED) systemic ...
Miriam Miima, Emmanuel Marsuk
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An antibiotic audit of the surgical department at a rural hospital in Western Kenya
The Pan African Medical Journal, 2018 INTRODUCTION: Antibiotics are one of the most commonly prescribed medications in hospitalized patients, with up to half of prescriptions being irrational.
Ruth Chepkemoi Talaam +2 more
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Parametric Survival Models of Hemodialysis Patients in Relation with Patient-Related Factors [PDF]
Modern Medicine, 2020 Background: Survival analysis refers to analyzing of statistical data for which the outcome variable of interest is time until an event occurs. This research aimed at comparing different models of parametric Proportional Hazards (PH) models (Weibull ...
Reem Yousif MEKKI +5 more
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FEBS Open Bio, EarlyView.Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young +7 more
wiley +1 more source