Results 121 to 130 of about 186,810 (309)
Precificação de opções de commodities agropecuárias no Brasil: o caso do café arábica
Economia Aplicada, 2001 This paper compares and tests options pricing models to the actual premiums on the coffee options on futures contract negotiated at Bolsa de Mercadorias & Futuros. It uses data on the contracts with expiration date from February 1997 through August 1999.
Dalton Rodrigues da Silva Leite +2 more
doaj
Volatility forecasts, trading volume, and the ARCH versus option-implied volatility trade-off [PDF]
Market expectations of future return volatility play a crucial role in finance; so too does our understanding of the process by which information is incorporated in security prices through the trading process.
Glen Donaldson, Mark Kamstra
core
Ferroelectric Devices for In‐Memory and In‐Sensor Computing
Advanced Science, EarlyView.Inspired by biological systems, in‐memory and in‐sensor computing overcome von Neumann bottlenecks. Ferroelectric devices can mimic synaptic functions and sense stimuli like light or force, therefore are ideal for these paradigms. This review introduces the ferroelectric devices applied for in‐memory and in‐sensor computing, covering their structures ...
Hong Fang +5 more
wiley +1 more source
Has food price volatility risen? [PDF]
The high food prices experienced over recent years have led to the widespread view that food price volatility has increased. However, volatility has generally been lower over the two most recent decades than previously.
Christopher Gilbert, Wyn Morgan
core
Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices
Advanced Science, EarlyView.Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen +9 more
wiley +1 more source
AGRISE, 2016 Fluctuation on tomatoes’ prices is considered unstable as well as unpredictable due to several obstructions on demands and supply, which are deemed to yield a price volatility.
Amylia Rahma Nurbani +2 more
doaj
Advanced Science, EarlyView.Reactivity‐Programmed Assembly: A kinetic‐control strategy is reported for constructing hyperconnected silicone aerogels with a robust “thick‐neck” architecture. By exploiting the reactivity disparity of precursors, flexible segments are uniformly embedded within a rigid skeleton.
Aoqing Yan +9 more
wiley +1 more source
Toward Predictive Theory in Single‐Atom Catalysis
Advanced Science, EarlyView.A lifecycle‐oriented framework reframes modeling in single‐atom catalysis. By combining ensemble‐based descriptions with explicit validation against experimental observables, the approach defines the scope of theory across catalyst synthesis, activity, stability, and safety, clarifying where quantitative insight is possible and where interpretation ...
Andrea Ruiz‐Ferrando +3 more
wiley +1 more source
Determinants of the implied volatility function on the Italian Stock Market. [PDF]
This paper describes the implied volatility function computed from options on the Italian stock market index between 1995 and 1998 and tries to find out potential explanatory variables.
Alessandro Beber
core
Advanced Science, EarlyView.We present an organic–inorganic heterostructure transistor array for neuromorphic computing, achieving 95.6% MNIST accuracy and 1.2 fJ per operation, with dynamic spatiotemporal encoding and precise vehicle direction detection under combined optical and electrical stimulation.
Wen‐Min Zhong +13 more
wiley +1 more source