Results 241 to 250 of about 194,202 (306)

Point and Risk estImation Using an enSemble of Models for Nowcasting: PRISM‐Now

Journal of Forecasting, EarlyView.
ABSTRACT We propose PRISM‐Now, a novel ensemble forecasting system for near‐term GDP projection. Recognizing that relevant economic information evolves over time, we treat forecasts from multiple base models as draws from a mixture distribution of “good” and “bad” estimates, whose composition changes continuously and cannot be identified ex ante.
Beomseok Seo, Hyungbae Cho, Dongjae Lee
wiley   +1 more source

Co-movement between stock markets in advanced economies and Africa in times of uncertainty: A time-frequency domain approach. [PDF]

PLoS One
Tetteh JE, Owusu Junior P.
europepmc   +1 more source

Simultaneous Quantification of Phenolic Compounds and Capsaicinoids in Chili Peppers Using Ultra‐High Performance Liquid Chromatography‐Tandem Mass Spectrometry

Food Safety and Health, EarlyView.
A UHPLC‐MS/MS method was developed to simultaneously quantify four capsaicinoids and 19 phenolic compounds, the key bioactive constituents in chili peppers. It exhibits high sensitivity, low matrix effects, excellent accuracy, and precision, enabling reliable detection in chili samples.
Shaoyun Wu, Xue Feng, Haixiao Ma, Yinfeng Zhao, Zhenying Sun, Meiling Zhang, Zehua Ke, Jing Qiu, Yongzhong Qian, Guiqiao Liu, Rui Weng   +10 more
wiley   +1 more source

Characteristics and dynamic evolution of inter-industry volatility spillovers in China's stock market. [PDF]

PLoS One
Xie F, Wei H.
europepmc   +1 more source

Genetically Engineered Nanobody–Recombinant Antibody Colloidal Gold Strip for Ultrasensitive Atrazine Detection in Fruits and Vegetables

Food Safety and Health, EarlyView.
A sensitive colloidal gold immunochromatographic assay for atrazine was successfully established using genetically engineered nanobody‐recombinant antibody, which overcame the shortcomings of traditional antigen‐antibody. ABSTRACT Colloidal gold immunochromatography (CG‐ICA) is distinguished by its cost‐effectiveness and rapid detection capabilities ...
Jiayong Bao, Peipei Li, A. M. Abd El‐Aty, Jing Zhao, Lingyuan Xu, Chenxi Guo, Jia Li, Xingmei Lei, Sensen Feng, Yi Liu, Si Chen, Fen Jin, Jing Wang, Lufei Zheng, Zhen Cao, Bruce D. Hammock, Maojun Jin   +16 more
wiley   +1 more source

Deep limit order book forecasting: a microstructural guide. [PDF]

Quant Finance
Briola A, Bartolucci S, Aste T.
europepmc   +1 more source

Food Contamination and Safety in Nigeria: A Systematic Synthesis of Heavy Metals, Microbial Pathogens, and Health Risk Metrics

Food Safety and Health, EarlyView.
This is an infographic driver of food contaminants and health effects. ABSTRACT Food safety remains a critical challenge in Nigeria due to rapid urbanization and weak regulatory enforcement. This systematic review synthesizes empirical evidence from 2015 to 2025 to characterize food contaminant profiles and associated human health risks in Nigeria ...
Cecilia Nwadiuto Obasi, Naomi A. Mogborukor, Baridoo Donatus Dooka, Polycarp Dauda Madaki, Chiara Frazzoli, Mohamed Haddad, Orish Ebere Orisakwe   +6 more
wiley   +1 more source

Short-term forecasting and impact analysis of COVID-19 and the stock market in Morocco using ARIMA. [PDF]

PLoS One
Aboagye N, Nadarajah S.
europepmc   +1 more source

Improving Implied Volatility Forecasts for American Options Using Neural Networks

Journal of Futures Markets, EarlyView.
ABSTRACT This paper explores the application of neural networks to improve pricing of American options. Focusing on both American and European options on the S&P 100 index from January 2016 to August 2023, we integrate neural networks to model the difference between market‐implied and model‐implied volatilities derived from the Black‐Scholes and Heston
Haitong Jiang, Emese Lazar, Miriam Marra
wiley   +1 more source

Study on the spillover effects of tail risks in the supply chain of China's pharmaceutical industry. [PDF]

Front Public Health
Wang C, Xu M, Xu M.
europepmc   +1 more source