An in-depth analysis of Dorian Shainin’s variable search (VS) method is carried out. Conditions under which the VS approach does and does not work well in comparison to traditional designs are identified. Explicit expressions for the expected number of runs and the probability of correct screening are derived under stated assumptions. The crucial roles of process knowledge and noise variation i...

Instrumental-variable (IV) methods were invented over 70 years ago, but remain uncommon in epidemiology. Over the past decade or so, non-parametric versions of IV methods have appeared that connect IV methods to causal and measurement-error models important in epidemiological applications. This paper provides an introduction to those developments, illustrated by an application of IV methods to ...

Variable elimination (VE), a central component of Bayesian network inference, starts and ends with clear structure and semantics, yet all intermediate distributions, whether normalized or unnormalized, are denoted as potentials. In this paper, a condition is given stating when intermediate distributions are defined with respect to the joint distribution. Theoretical and practical advantages of ...

Instrumental variable (IV) estimation typically requires the user to correctly specify the relationship between the regressors and the outcome to obtain a consistent estimate of the effects of the treatments. This paper proposes doubly robust IV regression estimators that only require the user to either correctly specify the relationship between the measured confounding variables (i.e., include...

a three year old boy with delayed separation of the umbilical cord, recurrent pyogenic infections and common variable immundeficiency is presented. the immunoglobulin measurement was severely abnormal. to the best of our knowledge, the existance of leukocyte adhesion disorder together with common variable immunodeficiency (cyid) in a patient has not been reported prior to this study.

This study examines the relationship between firm innovation and CSR. Stakeholders’ concern over transaction-specific investments exacerbates when firms engage heavily in innovation activities. To secure stakeholders’ support, firms adopt CSR effectively as an ex ante signal of sustainability and goodwill. As CSR is endogenous to a firm’s innovation activities, we rely on an instrumental variab...

In this paper, we propose a method for efficient gonio-imaging of optically variable devices (OVDs), which are applied as a counterfeit deterrence for valuable documents. A compound-eye image-capturing system composed by a microlens array, a signal separator, and an image sensor was used to capture directionally distributed light from OVDs after being collimated by a convex lens. Multiple image...