The constrained estimation in Cox’s model for the right-censored survival data is studied and the asymptotic properties of the constrained estimators are derived by using the Lagrangian method based on Karush–Kuhn–Tucker conditions. A novel minorization–maximization (MM) algorithm is...

The main objective of this paper is to develop mathematical formulations to gain insight into the best way to distribute financial incentives to receivers of urban deliveries to maximize participation in off-hour deliveries. The paper considers two different types of incentive budgets:...

Many framework-based process improvement programs, such as those based on the eSourcing Capability Model for Service Providers (eSCM-SP) and Capability Maturity Model Integration for Development (CMMIDEV), rely on a sample of engagements (or projects) in drawing conclusions about organizational...

This study compares the statistical precision of simple random sampling with balanced ranked set sampling in an inventory valuation scenario. Computer simulation is used to calculate standard errors for the ranked set sampling mean, and those standard errors are then compared to the...

An institutional auditing program typically consists of the following steps: a sample audit, the decision to move to the full audit, a settlement offer, and the full audit. Statistical sampling techniques are often used to estimate the overbilling percentage and amount. This paper discusses the...

To be necessary means to be useful, indispensable for a particular purpose. To what extent is the sampling method necessary in the audit of financial statements? This paper aims to answer the question, why is sampling important, following the advantages and disadvantages of the two known...

Recent environmental trends, including (1) an expansion of existing command and control directives, (2) the introduction of market-based policy instruments, and (3) the adoption of extended producer responsibility, have created a need for new tools to help managerial decision-making. To address...