Results 111 to 120 of about 727,591 (368)

Volatility Inference and Return Dependencies in Stochastic Volatility Models [PDF]

open access: yesarXiv, 2016
Stochastic volatility models describe stock returns $r_t$ as driven by an unobserved process capturing the random dynamics of volatility $v_t$. The present paper quantifies how much information about volatility $v_t$ and future stock returns can be inferred from past returns in stochastic volatility models in terms of Shannon's mutual information.
arxiv  

Functional Recycling and Reuse of Nd–Fe–B Permanent Magnets from Various Waste Streams for a more Sustainable and Resilient Electromobility

open access: yesAdvanced Engineering Materials, EarlyView.
Due to the increasing demand and growing importance of resilient and sustainable supply chains, the use of recycled and reused Nd–Fe–B magnets in e‐mobility applications such as Pedelecs, e‐Scooters, and Hoverboards is being investigated. It can be shown that the corresponding motors with recycled magnets do not exhibit any loss of performance while at
Mario Schönfeldt   +6 more
wiley   +1 more source

Impact Of The Ban On Uncovered sCDS Trade On The Interdependencies Between The CDS Market And Other Sectors Of Financial Markets. The Case Of Safe And Developed Versus Risky And Developing European Markets

open access: yesComparative Economic Research, 2016
The aim of the article is to verify the impact of the ban on uncovered sCDS trade in Europe on the interdependencies between the sCDS market and other sectors of financial markets.
Agata Kliber
doaj   +1 more source

Asymmetric Volatility and Risk in Equity Markets

open access: yes, 1997
It appears that volatility in equity markets is asymmetric: returns and conditional volatility are negatively correlated. We provide a unified framework to simultaneously investigate asymmetric volatility at the firm and the market level and to examine ...
G. Bekaert, Guojun Wu
semanticscholar   +1 more source

The volatile microbiome [PDF]

open access: yesGenome Biology, 2011
The first detailed temporal study of the human microbiome shows that individual body habitats exhibit surprising variation over time yet maintain distinguishable community structures.
openaire   +3 more sources

Facile Synthesis of CuxS Electrocatalysts for CO2 Conversion into Formate and Study of Relations Between Cu and S with the Selectivity

open access: yesAdvanced Functional Materials, EarlyView.
Copper sulfide based electrocatalysts for CO2 conversion are selective for production of formate as major product. Transformations under electrochemical conditions result in significant sulfur loss, and this study examines the nature of how persistent, residual sulfur (observed as surface SO42– species and S dissolved in the electrolyte) can sustain ...
Sasho Stojkovikj   +8 more
wiley   +1 more source

Emerging Equity Market Volatility

open access: yes, 1995
Returns in emerging capital markets are very different from returns in developed markets. While most previous research has focused on average returns, we analyze the volatility of the returns in emerging equity markets. We characterize the time-series of
G. Bekaert, Campbell R. Harvey
semanticscholar   +1 more source

Ultra‐Sensitive, Self‐powered, CMOS‐Compatible Near‐Infrared Photodetectors for Wide‐Ranging Applications

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric ZrO2 films grown by sputtering on Si, show strong near‐infrared (NIR) detection capability. The performance is shown to arise from the pyroelectric effect, combined with the ferroelectric effect in ZrO2, and the photovoltaic effect in Si.
Nuno E. Silva   +13 more
wiley   +1 more source

Estacionalidad, ciclos y volatilidad en los precios del ganado macho de levante en Montería, Colombia

open access: yesRevista MVZ Cordoba, 2007
Objetivo. Describir el comportamiento temporal de los precios del ganado vivo macho de levante de primera calidad en la ciudad de Montería, Colombia comercializado en las subastas. Materiales y métodos.
Omar Castillo N
doaj   +1 more source

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