Results 41 to 50 of about 66,906 (266)

What drives risk in China’s soybean futures market? Evidence from a flexible GARCH-MIDAS model

Journal of Applied Economics, 2022
Modeling futures market risk simultaneously influenced by macro low-frequency information and daily risk factors is a valuable challenge. We propose a new general framework for it based on the flexible GARCH-MIDAS model.
Xinyu Wang, Lele Zhang, Qiuying Cheng, Song Shi, Huawei Niu   +4 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Managing Price Risk in the Corn Market Using Option Strategies

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2018
In today’s economy, the agricultural sector faces a high degree of risk due to increasing commodity price volatility. Therefore, it is important to know how to manage the price risk effectively.
Monika Harčariková
doaj   +1 more source

De novo synthesis of short‐chain aldehydes and hydrocarbons secreted by the brown marmorated stink bug Halyomorpha halys

FEBS Open Bio, EarlyView.
The brown marmorated stink bug, Halyomorpha halys, mainly secretes 4‐oxo‐(E)‐2‐hexenal, (E)‐2‐decenal, dodecane and tridecane, a mixture representative of that released by many heteropterans. We demonstrated that H. halys can synthesise these secretory components de novo using dietary glucose.
Haruna Fujimori, Koji Noge
wiley   +1 more source

Estimating volatility-of-volatility: A comparative analysis [PDF]

Economics Letters
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jianglei Yuan, Dehong Liu, Carl R. Chen, Mingye Ma   +3 more
openaire   +2 more sources

A simple joint model for returns, volatility and volatility of volatility

Journal of Econometrics, 2023
We propose a model that allows for conditional heteroskedasticity in the volatility of asset returns and incorporates current return information into the volatility nowcast and forecast. Our model can capture all stylised facts of asset returns even with Gaussian innovations and is simple to implement.
openaire   +2 more sources

PRICE FORECASTING OF STRATEGIC FOOD COMMODITIES IN VARIOUS MARKETS IN MALANG REGENCY: IMPLEMENTATION OF THE ARMA-GARCH MODEL

AGRISE, 2023
Fluctuations in food prices can trigger vulnerability, disrupting people's access to food. This study aims to predict the prices of strategic food commodities: rice, corn, shallots, garlic, cayenne pepper, large chilies, chicken meat, chicken eggs, beef,
Sujarwo Sujarwo, Fitrotul Laili
doaj   +1 more source

Comprehensive Characterization of 98 Chinese Cases of Genetic Creutzfeldt‐Jakob Disease With T188K Mutation

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To characterize the demographic, clinical, and laboratory features of the Chinese patients of genetic Creutzfeldt‐Jakob disease with T188K variant (T188K‐gCJD), the most common subtype of genetic prion diseases (gPrDs) in China. Methods In this nationwide retrospective study, data from 98 genetically confirmed T188K‐gCJD patients ...
Chun‐Jie Li, Dong‐Lin Liang, Li‐Ping Gao, Wei‐Wei Zhang, Wei Zhou, A. Ruhan, Bing Xu, Run‐Dong Cao, Kang Xiao, Cao Chen, Qi Shi, Xiao‐Ping Dong   +11 more
wiley   +1 more source

The Effects of Exchange Rate and Interest Rate Exposure on the Stock Returns and Volatility of Turkish Insurance Companies

İstanbul İktisat Dergisi, 2020
This study examines the impact of exchange rate and interest changes on stock returns and volatility of Turkish insurance companies using the EGARCH model for the period of 01/01/2009 to 15/04/2020.
İsmail Erkan Çelik
doaj   +1 more source

Validation of a Cellular Imaging‐Based Method as a Potential Biomarker for SPG4 Hereditary Spastic Paraplegia

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Hereditary Spastic Paraplegia (HSP) comprises a group of rare genetic diseases characterized by length‐dependent axonal degeneration of the corticospinal tracts and dorsal columns, whose main clinical feature is spastic gait. Pathogenic variants in the SPG4 gene cause Spastic Paraplegia Type 4 (SPG4‐HSP), the most common form of HSP.
Gaia Fattorini, Valerio Licursi, Gianmarco Dalla Zanna, Flavio Dal Canto, Melissa Barghigiani, Nunzio Setola, Salvatore Rossi, Antonio Funcis, Filippo M. Santorelli, Gabriella Silvestri, Carlo Casali, Francesca Sardina, Cinzia Rinaldo   +12 more
wiley   +1 more source