Results 51 to 60 of about 11,660 (201)

Determination of Value-at-Risk in UNVR Stocks Using ARIMA-GJR-GA RCH Model

Operations Research: International Conference Series, 2021
Stocks are investment instruments that are in great demand by investors as a basis for storing finances. The most important thing in investing is the return and risk of loss obtained from investing in stocks. Risk measurement is carried out using Value-at-Risk and Conditional Value-at-Risk.
Rizki Apriva Hidayana, Herlina Napitupulu, Sukono Sukono   +2 more
openaire   +1 more source

Specimen‐tailored ‘lived’ climate reveals precipitation onset and amount best predict specimen phenology, but only weakly predict estimated reproduction across a clade

New Phytologist, EarlyView.
Summary Herbarium specimens are widely distributed in space and time, thereby capturing diverse conditions. We reconstructed specimen ‘lived’ climate from knowledge of germination cues and collection dates for 14 annual species in the Streptanthus (s.l.) clade (Brassicaceae) to ask: which climate attributes best explain specimen phenological stage and ...
Megan Bontrager, Samantha J. Worthy, Laura Leventhal, Julin N. Maloof, Jennifer R. Gremer, Johanna Schmitt, Sharon Y. Strauss   +6 more
wiley   +1 more source

GRG Non-Linear and ARWM Methods for Estimating the GARCH-M, GJR, and log-GARCH Models

JTAM (Jurnal Teori dan Aplikasi Matematika), 2022
Numerous variants of the basic Generalized Autoregressive Conditional Heteroscedasticity (GARCH) models have been proposed to provide good volatility estimating and forecasting. Most of the study does not work Excel’s Solver to estimate GARCH-type models.
Didit Budi Nugroho, Lam Peter Panjaitan, Dini Kurniawati, Zaini Kholil, Bambang Susanto, Leopoldus Ricky Sasongko   +5 more
doaj   +1 more source

Multiple consecutive daily therapeutic plasma exchange using exclusively albumin replacement fluid in low bleeding risk patients is associated with only rare and mild bleeds

Transfusion, EarlyView.
Abstract Background Therapeutic plasma exchange (TPE) using exclusively albumin replacement fluid depletes coagulation factors, particularly fibrinogen, and concerns about performing multiple consecutive daily procedures due to iatrogenic bleeding exist. Fibrinogen testing to guide bleeding risk stratification is vague.
Jay S. Raval, Joseph R. Griggs, Andres E. Mindiola Romero, Chelsea Reyes, Sarah Mertens, Cynthia Ornelas, Lizabeth Marinaro, Marian A. Rollins‐Raval   +7 more
wiley   +1 more source

Emerging Machine Learning Strategies for Digital Processing and Additive Manufacturing of Advanced Ceramics

International Journal of Applied Ceramic Technology, Volume 23, Issue 3, June 2026.
ABSTRACT Machine learning (ML) techniques are increasingly being applied to the development and processing of advanced ceramics, enabling predictive design, formulation optimization, and improved control of manufacturing workflows. This review presents an integrated and application‐oriented analysis of ML approaches in ceramic engineering, with ...
Sioney Teixeira Monteiro, Isaac A. T. Monteiro, J. R. Fernandez‐Gamboa, Yurimiler Leyet Ruiz   +3 more
wiley   +1 more source

Application of Copula Models in Stock Market Analysis

Informatika
Objectives. The objective of the study is to use copula models to analyze shares of the Russian stock market and describe changes in the relationship between the shares before and during the coronavirus infection (COVID-19).Methods.
A. M. Kendys, M. M. Troush
doaj   +1 more source

Forecasting the Volatility of Real Residential Property Prices in Malaysia: A Comparison of Garch Models

Real Estate Management and Valuation, 2023
The presence of volatility in residential property market prices helps investors generate substantial profit while also causing fear among investors since high volatility implies a high return with a high risk.
Suleiman Ahmad Abubakar, Othman Mahmod, Daud Hanita, Abdullah Mohd Lazim, Kadir Evizal Abdul, Kane Ibrahim Lawal, Husin Abdullah   +6 more
doaj   +1 more source

Selective Modulation of Evidence Accumulation by Hippocampal Theta Oscillations During Mnemonic Decision‐Making

Human Brain Mapping, Volume 47, Issue 7, May 2026.
Hippocampal theta power during memory retrieval predicts evidence accumulation in a mnemonic similarity task. Trial‐level MEG signals were integrated with a linear ballistic accumulator model, revealing that theta oscillations modulate decision dynamics, linking neural variability to memory‐based discrimination performance.
Pei L. Robins, Jessica R. Gilbert, Bruce Luber, Nadia Mustafa, Eesha Bharti, Jeffrey D. Stout, Frederick W. Carver, Zhi‐De Deng   +7 more
wiley   +1 more source

Research on Portfolio Risk Prediction Based on Copula-GJR-Skewt Model [PDF]

Advances in Social Science, Education and Humanities Research, 2015
For risk prediction of diversified investment portfolio, we use the thick tail and the biased characteristics of GJR-Skewt model to depict a single asset and using Copula model to depict a diversified investment portfolio non-linear correlation structure, simulating the random distribution of financial assets with Monte Carlo method and combining with ...
openaire   +1 more source

Atypical metastatic osteosarcoma pattern in a dog: Lymphatic, neurovascular and subcutaneous metastasis

Veterinary Record Case Reports, Volume 14, Issue 2, May 2026.
Abstract A 6‐year‐old, spayed, female labrador retriever was presented with left distal radial swelling. Imaging, cytology and biopsy identified an aggressive radial lesion with metastasis to the left axillary lymph node, and a diagnosis of presumptive osteosarcoma was made.
Veronica Perez‐Rodriguez, Laura Venner, Rowan Milner, Jishnu Rao Gutti, Elizabeth A. Maxwell   +4 more
wiley   +1 more source