Results 81 to 90 of about 340,596 (268)

Measuring the maximum optimal portfolio loss by comparing the dependency structure of Gaussian and t copulas [PDF]

open access: yesفصلنامه بورس اوراق بهادار
Given the importance of risk in financial markets, the accurate estimation of it has always been a primary concern for participants in these markets. The recurrent financial crises resulting from financial risk over the past two decades globally have ...
Mohammad Reza Haddadi, Manizheh Goudarzi
doaj   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

open access: yesAdvanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen   +5 more
wiley   +1 more source

How does investor sentiment affect stock market crash risk? Evidence from Asia-Pacific markets

open access: yesCogent Economics & Finance
This study aims to examine the effect of investor sentiment on stock market crash risk in the Asia–Pacific region. The research employs principal components analysis (PCA) to construct an investor sentiment index, while the Method of Moments Quantile ...
An Tuan Nguyen, Nhung Thi Nguyen
doaj   +1 more source

High Frequency Price Change Spillovers in Bitcoin Markets

open access: yesRisks, 2019
The study of connectedness is key to assess spillover effects and identify lead-lag relationships among market exchanges trading the same asset. By means of an extension of Diebold and Yilmaz (2012) econometric connectedness measures, we examined the ...
Paolo Giudici, Paolo Pagnottoni
doaj   +1 more source

Role of the Recombination Zone in Organic Light‐Emitting Devices

open access: yesAdvanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

Analysis of the Market Risk Sources in the Small and Medium-Sized Enterprises of Transport

open access: yesCommunications, 2019
The aim of this paper was to define the important market risk sources in the transport small and medium-sized enterprises segment. A part of this aim is to find out how entrepreneurs evaluate these sources, and quantify the differences in their ...
Maria Hudakova, Jan Dvorsky
doaj   +1 more source

Lead Halide Perovskite Photoelectrocatalysis

open access: yesAdvanced Materials, EarlyView.
Lead halide perovskite semiconductors have emerged as highly promising materials for solar fuel and chemical synthesis. This perspective discusses advances made in the rational photoelectrode design to improve solar‐to‐chemical conversion, product scope, and scalability.
Virgil Andrei
wiley   +1 more source

FINANCIAL RISKS ASSOCIATED WITH THE GOVERNMENTAL PUBLIC DEBT’S PORTFOLIO [PDF]

open access: yesAnnals of the University of Petrosani: Economics, 2010
The management of public debt is a process strictly connected with and dependent on fiscal and budget policy as well as on monetary policy. Under such circumstances the analysis of governmental public debt’s portfolio is carried out by taking into ...
MARIANA MAN, ROXANA MARIA MARIN
doaj  

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