A5088268137- Financial Risk and Volatility Modeling
- Market Dynamics and Volatility
- Complex Systems and Time Series Analysis
- Crop Yield and Soil Fertility
- Research in Cotton Cultivation
- Forecasting Techniques and Applications
- Financial Markets and Investment Strategies
- Stochastic processes and financial applications
- Seed Germination and Physiology
- Wheat and Barley Genetics and Pathology
- Hydrology and Drought Analysis
- Plant nutrient uptake and metabolism
- Stock Market Forecasting Methods
- Ecosystem dynamics and resilience
- Irrigation Practices and Water Management
- Genetics and Plant Breeding
- Cardiovascular Health and Disease Prevention
- Food composition and properties
- Plant Molecular Biology Research
- Rice Cultivation and Yield Improvement
- Complex Network Analysis Techniques
- Cardiovascular Health and Risk Factors
- Nuts composition and effects
- Allelopathy and phytotoxic interactions
- Time Series Analysis and Forecasting
Beijing Normal University
2019-2024
Hebei Academy of Agriculture and Forestry Sciences
2019-2023
The root system plays an important role in the growth and development of cotton, is closely related to shoot growth, both which are affected by N availability soil. However, it unknown how affects root-shoot relationship under various rates Yellow River Basin, China. Thus, aim this study was assess impacts application rate on relationship, provide insight into regulation efficiency from perspective system. A field experiment conducted 2014 2015 used determine effects (0, 120, 240, 480 kg...
The objective of this study was to assess the impacts nitrogen on physiological characteristics source–sink system upper fruiting branches under various amounts fertilization. A two-year field experiment conducted with a Bt cotton cultivar in Yellow River Basin China. growth and yield were compared four levels: Control (N0, 0 kg ha−1), low (N1, 120 moderate (N2, 240 high (N3, 480 ha−1). results indicated that subtending leaves branches, chlorophyll content, protein peroxidase (POD) activity...
Melatonin is effective in enhancing various abiotic stress resistances of plants. However, its underlying mechanisms drought-resistance winter wheat (Triticum aestivum L.) not clear. The goal this work was to investigate the effect melatonin on seed germination and evaluate leaf antioxidant physiology for two varieties. Experiments included 20% PEG, plus PEG a control using contrasting varieties (JM22- drought sensitive HG35- resistant). levels were 0, 1, 10, 100 300 μmol L-1. Results...
Abstract Exploring the synchronicity between time series, especially similar patterns during extreme events, has been a focal point of research in academia. This is due to fact that such special dependence occurring pairs series often plays crucial role triggering emergent behaviors underlying systems and closely related systemic risks. In this paper, we investigate relationship corresponding topological properties cross-recurrence network (CRN). We discover positive linear probability...
Abstract This study introduces a comprehensive framework grounded in recurrence analysis, tool of nonlinear dynamics, to detect potential early warning signals (EWS) for imminent phase transitions financial systems, with the primary goal anticipating severe crashes. We first conduct simulation experiment demonstrate that indicators based on multiplex networks (MRNs), namely average mutual information and edge overlap, can indicate state complex systems. Subsequently, we consider constituent...
Abstract Increasing plant density usually increases the intra‐specific competition of maize plants. This study was conducted to determine whether ( Zea mays L.) hybrid tolerance is related competition. Field experiments were using a split‐plot design, main plots contained four hybrids, and subplots 12 densities varied from 1.5 18 × 10 4 plants ha −1 . focused on dry matter accumulation, grain yield (GY), intensity (CI), absolute severity (ASC) based above treatments. Among all tested GY...
Abstract In this research, the effects of melatonin on germination and amino acid content in wheat ( Triticum aestivum L.) seeds under polyethylene glycol (PEG-6000) stress were investigated. The results revealed that 10 μM could aggravate adverse drought percentage, index, potential two varieties (JM22 HG35). However, 300 obviously alleviate negative effect water increase radicle length, number plumule length germinated seeds. Principal component analysis showed apparently changed variation...
Abstract This paper proposes a new risk measurement model that directly incorporate information from high‐frequency data to predict daily Value‐at‐Risk and expected shortfall. In this model, Regular‐Vine copula Monte Carlo simulation are applied produce the predicted intraday returns have nonlinear dependences. And time‐varying marginal distribution of is estimated under framework generalized autoregressive score. The so named R‐Vine‐Copula‐GAS (abbreviated as RVCGAS). in same day added up...
The incidence of hypertension in elderly patients China and influencing factors.Based on the baseline data 2013 from Health Retirement Longitudinal Study (CHARLS), this study used practical estimator (PIE) method to estimate hypertension, applied Cox regression determine relationship between factors.In general, decreased with age, risk females was significantly higher than that males. cumulative for an individual, who is hypertension-free before age 65 years, could reach 86.21% (95%...
Bank crisis is challenging to define but can be manifested through bank contagion. This study presents a comprehensive framework grounded in nonlinear time series analysis identify potential early warning signals (EWS) for impending phase transitions systems, with the goal of anticipating severe crisis. In contrast traditional analyses exposure networks using low-frequency data, we argue that studying dynamic relationships among stocks high-frequency data offers more insightful perspective...
Intensified kernel position effect is a common phenomenon in maize production under higher plant density, which limits the crop productivity. Subsoiling considered as an effective agronomic practice to improve In order clarify of subsoiling before winter wheat on densely grown summer and its regulatory mechanism, field experiments were conducted during 2020-2021 2021-2022 growing seasons by using split-plot design. Main plot include two tillage practices: conventional (CT) (SS); subplot...
By observing the actual movement of asset prices, we find that there is a persistent shock impact jumps on prices rather than transient effect. To address this phenomenon, propose new jump-diffusion model restores process price by assuming its continuous changes are determined diffusion process, while individual inscribed filtered Poisson process. We also come up with estimation methods for parameters involved in jump as well identifying and determining duration transit based series. In...