Results 271 to 280 of about 49,838,108 (340)

A Low Psoas Muscle Index Was Associated With a Poorer Overall Survival in Patients Who Underwent Percutaneous Nephrostomy

open access: yesAging and Cancer, EarlyView.
In patients with malignant ureteral obstruction undergoing percutaneous nephrostomy, sarcopenia defined by a low psoas muscle index was independently associated with poor overall survival on multivariate Cox regression analysis, suggesting that preoperative assessment of psoas muscle index may aid prognostic stratification in this population.
Kota Shimokihara   +3 more
wiley   +1 more source

Understanding and Mitigating the Risk of Accelerated Biological Aging in Survivors of Cancer: A Scoping Review

open access: yesAging and Cancer, EarlyView.
Cancer treatment is associated with measurable acceleration of biological aging across epigenetic, telomere, senescence, and immune biomarkers. However, biomarker validation and interventional strategies remain limited, especially in hematologic malignancies, underscoring the need for standardized multi‐omic aging assessments and adequately powered ...
Moataz Ellithi   +3 more
wiley   +1 more source

Self‐Regulated Learning Meets AI: Reinterpreting Self‐Regulation, Co‐Regulation, and Socially Shared Regulation in Human–AI Interaction

open access: yesNew Directions for Adult and Continuing Education, EarlyView.
ABSTRACT Advancing artificial intelligence (AI) has transformed learning and work, yet higher education and professional development programs have not systematically equipped learners for AI‐prevalent environments. This lack of preparation creates uncertainty regarding control, responsibility, trust, and accountability.
Moon‐Heum Cho, Jerusalem Merkebu
wiley   +1 more source

Value at Risk

The Management Accountant Journal, 2022
Während vor dem Aufkommen von KonTraG, Basel II und dem SarbanesOxley-Act Risikomanagementsysteme eine betriebswirtschaftliche „Kür“ waren, sind sie jetzt ein Teil des Pflichtprogramms.
Biplab Chakraborty
semanticscholar   +2 more sources

Distributionally robust reinsurance with Value-at-Risk and Conditional Value-at-Risk

Insurance: Mathematics and Economics, 2021
A basic assumption of the classic reinsurance model is that the distribution of the loss is precisely known. In practice, only partial information is available for the loss distribution due to the lack of data and estimation error. We study a distributionally robust reinsurance problem by minimizing the maximum Value-at-Risk (or the worst-case VaR ...
Haiyan Liu, Tiantian Mao
openaire   +1 more source

Monte Carlo Methods for Value-at-Risk and Conditional Value-at-Risk: A Review

ACM Transactions on Modeling and Computer Simulation, 2014
Value-at-risk (VaR) and conditional value-at-risk (CVaR) are two widely used risk measures of large losses and are employed in the financial industry for risk management purposes. In practice, loss distributions typically do not have closed-form expressions, but they can often be simulated (i.e., random observations of the loss distribution may be ...
L. Hong, Zhao-Lin Hu, Guangwu Liu
semanticscholar   +4 more sources

Non-Linear Value-at-Risk

Review of Finance, 1999
Value-at-risk methods which employ a linear ("delta only") approximation to the relation between instrument values and the underlying risk factors are unlikely to be robust when applied to portfolios containing non-linear contracts such as options. The most widely used alternative to the delta-only approach involves revaluing each contract for a large ...
Britten-Jones, Mark   +1 more
openaire   +1 more source

Integrated Risk Management for Newsvendors with Value-at-Risk Constraints

Manufacturing & Service Operations Management, 2019
We study a newsvendor problem with profit risk control using value-at-risk (VaR) constraints. When a firm’s demand correlates with the price of a tradable financial asset, both financial tools (der...
P. Kouvelis, Rong Li
semanticscholar   +1 more source

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