Results 161 to 170 of about 3,807,500 (349)

The Bayesian Hidden Markov Chain Modeling of the Ghana COVID-19 Blood Type Infection Distribution

Ratio Mathematica
This work uses the Bayesian Poisson-Hidden Markov Model (BP-HMM) to develop a model that properly describes the blood type distribution among newly diagnosed COVID-19 patients.
Joseph Johnson Kwabina Arhinful, Emmanuel deGraft Johnson Owusu-Ansah, Burnett Tetteh Accam, Olusola Atinuke Adebanji   +3 more
doaj   +1 more source

Portfolio Optimization for Pension Purposes: Literature Review

Journal of Economic Surveys, EarlyView.
ABSTRACT This systematic review identifies persistent challenges and gaps in the literature on pension portfolio optimization models. We searched, selected, and critically analyzed 82 articles from three major academic databases published over the past decade to investigate the barriers to the effective implementation of these models.
Leonardo Moreira, Igor Leão dos Santos, Pedro Henrique Gonzalez   +2 more
wiley   +1 more source

Open the Jail Cell Doors, HAL: A Guarded Embrace of Pretrial Risk Assessment Instruments [PDF]

, 2018
In recent years, criminal justice reformers have focused their attention on pretrial detention as a uniquely solvable contributor to the horrors of modern mass incarceration. While reform of bail practices can take many forms, one of the most pioneering
Dalakian, Glen J., II
core   +1 more source

Models in Decision‐Making Under Risk and Uncertainty

Journal of Economic Surveys, EarlyView.
ABSTRACT This paper systematically compares dominant frameworks for modeling decision‐making under risk and uncertainty, evaluating their theoretical trade‐offs and practical relevance for economic research. We establish key criteria for model selection—including predictive accuracy, descriptive realism, computational tractability, and ecological ...
Martin Höppner
wiley   +1 more source

Optimal funding and investment strategies in defined contribution pension plans under Epstein-Zin utility [PDF]

, 2008
A defined contribution pension plan allows consumption to be redistributed from the plan member’s working life to retirement in a manner that is consistent with the member’s personal preferences.
Blake, D., Wright, I. D., Zhang, Y.
core  

Welfare consequences of the compound risks of index insurance

Journal of Risk and Insurance, EarlyView.
Abstract Index insurance is an attractive variant on the standard insurance contract that allows the determination of a loss event to be defined by one or more thresholds on an index that is positively correlated with actual losses. Index insurance also comes with a compound risk, basis risk.
Glenn Harrison, Jimmy Martí­nez‐Correa, Karlijn Morsink, Jia Min Ng, J. Todd Swarthout   +4 more
wiley   +1 more source

Basis risk, social comparison, perceptions of fairness, and demand for insurance: A field experiment in Ethiopia

Journal of Risk and Insurance, EarlyView.
Abstract Index insurance lowers agricultural risk but covers only covariate risks. Since farmers do not have complete insurance, they may develop mistrust of insurance when experiencing crop losses and not receiving payouts. Although recent innovations in remote sensing enable the provision of more complete insurance including coverage for ...
Berber Kramer, Maria Porter, Solomon B. Wassie   +2 more
wiley   +1 more source

Assessing the causal effects of type 2 diabetes and obesity-related traits on COVID-19 severity

Human Genomics
Background Type 2 diabetes (T2D) and obesity-related traits are highly comorbid with coronavirus disease 2019 (COVID-19), but their causal relationships with disease severity remain unclear.
Jieun Seo, Gaeun Kim, Seunghwan Park, Aeyeon Lee, Liming Liang, Taesung Park, Wonil Chung   +6 more
doaj   +1 more source

Global uncertainties and stock returns under heterogeneous market conditions: Evidence from wavelet coherence analysis

Scientific African
Over the years, the world has faced numerous global uncertainties, each leaving a profound impact on the global economy and the financial market. This has increased the research on how these uncertainties affect various stocks. However, limited attention
Kenneth Sena Blekor, Clement Asare, Sedinam Abra Benardine Bissi, Gabriel Elike Mawuhorm, Cornelius Benle Tanoel, Samuel Asante Gyamerah   +5 more
doaj   +1 more source

Change Point Analysis for Functional Data Using Empirical Characteristic Functionals

Journal of Time Series Analysis, EarlyView.
ABSTRACT We develop a new method to detect change points in the distribution of functional data based on integrated CUSUM processes of empirical characteristic functionals. Asymptotic results are presented under conditions allowing for low‐order moments and serial dependence in the data establishing the limiting null‐distribution of the proposed test ...
Lajos Horváth, Gregory Rice, Jeremy VanderDoes   +2 more
wiley   +1 more source