Results 91 to 100 of about 5,864,540 (301)

Comparative Analysis of Tail Risk in Emerging and Developed Equity Markets: An Extreme Value Theory Perspective

International Journal of Financial Studies
This research explores the application of extreme value theory in modelling and quantifying tail risks across different economic equity markets, with focus on the Nairobi Securities Exchange (NSE20), the South African Equity Market (FTSE/JSE Top40) and ...
Sthembiso Dlamini, Sandile Charles Shongwe   +1 more
doaj   +1 more source

Tail associations in ecological variables and their impact on extinction risk

Ecosphere, 2020
Extreme climatic events (ECEs) are becoming more frequent and more intense due to climate change. Furthermore, there is reason to believe ECEs may modify "tail associations" between distinct population vital rates, or between values of an environmental ...
Shyamolina Ghosh, Lawrence W. Sheppard, Daniel C. Reuman   +2 more
doaj   +1 more source

Distributed Inference for Tail Risks

Statistica Sinica
For measuring tail risk with scarce extreme events, extreme value analysis is often invoked as the statistical tool to extrapolate to the tail of a distribution. The presence of large datasets benefits tail risk analysis by providing more observations for conducting extreme value analysis.
Chen, Liujun, Li, D (Deyuan), Zhou, Chen
openaire   +3 more sources

Pathways and pitfalls: a qualitative study of student experiences in biomedical science education

FEBS Open Bio, EarlyView.
Biomedical science students from underrepresented backgrounds face barriers including financial strain, disrupted laboratory access and cultural exclusion. Peer networks provide vital support when institutional systems are difficult to navigate. To create inclusive learning environments and achieve academic success, educators should blend active, hands‐
Olivia J. Russell, Cassy Ross, Panagiota S. Filippou, Bruno Silvester Lopes, Dominic Gilchrist, Paul Dean, Kamar Ameen‐Ali, Tora K. Smulders‐Srinivasan, Ahmad A. Khundakar   +8 more
wiley   +1 more source

The impact of heavy tails and comovements in downside-risk diversification [PDF]

, 2007
This paper uncovers the factors influencing optimal asset allocation for downside-risk averse investors. These are comovements between assets, the product of marginal tail probabilities, and the tail index of the optimal portfolio.
Gonzalo, Jesús, Olmo, José, Olmo, J., Gonzalo, J.   +3 more
core   +2 more sources

Corporate social performance as a market force: Analysing its impact on stocks’ tail risk and upside potential in the Spanish equity market

Management Letters/Cuadernos de Gestión
This study examines the impact of corporate social performance (CSP) and its subdimensions (workforce, human rights, community, and product responsibility) on firms’ tail risk and upside potential in the Spanish stock market.
Julen Galarza-Maria, Eduardo Ortas, José M. Moneva   +2 more
doaj   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source

A longitudinal study of the effects of providing straw at different stages of life on tail-biting and other behaviour in commercially housed pigs [PDF]

, 2011
Tail-biting (TB) is a welfare concern. Recent studies indicate that early provision of straw may help prevent TB, however, many of these studies were carried out on small groups of pigs and may have limited applicability to commercial farms.
Mendl, M. (Michael), Poppy Statham, Statham, Poppy, Green, LE, Mendl, Michael, Green, Laura E., Laura Green, Statham, P, Mendl, M, Green, Laura; id_orcid, Michael Mendl   +10 more
core   +1 more source

A Break-Regime Score-Driven Model for Tail-Risk Forecasting in China’s Carbon Market Under Policy Shifts

Mathematics
Accurate tail-risk measurement in carbon markets is challenging because carbon allowance prices are shaped not only by heavy-tailed return dynamics, but also by policy changes that can alter the underlying risk dynamics.
Xinshu Gong, Bin Zheng
doaj   +1 more source

Accurate and noninvasive prostate cancer detection using plasma‐derived extracellular vesicle RNA

FEBS Open Bio, EarlyView.
Plasma extracellular vesicles were captured with WGA‐conjugated magnetic beads and profiled for RNA biomarkers. A three‐RNA panel (NM_024955, NR_047469, and NR_002564) distinguished prostate cancer from healthy controls and benign prostatic hyperplasia, supporting a simple, noninvasive approach to improve prostate cancer detection.
Hanping Wei, Haoran Wu, Wei Feng
wiley   +1 more source