Flexure Performance of Textile-Reinforced Cementitious Composites with Novel Inclined Reinforcements.

Textile-reinforced cementitious composites have great potential to offer novel design opportunities for thin-section structures thanks to their superior material capabilities. In this work, new cementitious composites with novel reinforcement configurations are developed, which have superior mechanical properties. The cementitious composites contain inclined through-the-thickness reinforcements, and their enhanced performance on thin-section material hardening under flexural loading is demonstrated.

Biofilms as self-shaping growing nematics.

Active nematics are the nonequilibrium analogue of passive liquid crystals. They consist of anisotropic units that consume free energy to drive emergent behaviour. Like liquid crystal molecules in displays, ordering and dynamics in active nematics are sensitive to boundary conditions.

An interpenetrating-network theory of cytoplasm.

Under many physiological and pathological conditions such as division and migration, cells undergo dramatic deformations, under which their mechanical integrity is supported by cytoskeletal networks (i.e. intermediate filaments, F-actin, and microtubules).

Torsion-induced stick-slip phenomena in the delamination of soft adhesives.

Soft adhesive contacts are ubiquitous in nature and are increasingly used in synthetic systems, such as flexible electronics and soft robots, due to their advantages over traditional joining techniques. While methods to study the failure of adhesives typically apply tensile loads to the adhesive joint, less is known about the performance of soft adhesives under shear and torsion, which may become important in engineering applications. A major challenge that has hindered the characterization of shear/torsion-induced delamination is imposed by the fact that, even after delamination, contact with the substrate is maintained, thus allowing for frictional sliding and re-adhesion.

Interfacial cavitation.

Cavitation has long been recognized as a crucial predictor, or precursor, to the ultimate failure of various materials, ranging from ductile metals to soft and biological materials. Traditionally, cavitation in solids is defined as an unstable expansion of a void or a defect within a material. The critical applied load needed to trigger this instability -- the critical pressure -- is a lengthscale independent material property and has been predicted by numerous theoretical studies for a breadth of constitutive models.

Value of General Medical Knowledge Examinations in Performance Assessment of Practicing Physicians With Potential Competence and Performance Deficiencies.

Introduction: Problems with a physician's performance may arise at any point during their career. As such, there is a need for effective, valid tools and processes to accurately assess and identify deficiencies in competence or performance. Although scores on multiple-choice questions have been shown to be predictive of some aspects of physician performance in practicing physicians, their relationship to overall clinical competence is somewhat uncertain particularly after the first 10 years of practice.

Remediation of the deficiencies of physicians across the continuum from medical school to practice: a thematic review of the literature.

Despite widespread endorsement of competency-based assessment of medical trainees and practicing physicians, methods for identifying those who are not competent and strategies for remediation of their deficits are not standardized. This literature review describes the published studies of deficit remediation at the undergraduate, graduate, and continuing medical education levels. Thirteen studies primarily describe small, single-institution efforts to remediate deficient knowledge or clinical skills of trainees or below-standard-practice performance of practicing physicians.

Toward meeting the challenge of physician competence assessment: the University of California, San Diego Physician Assessment and Clinical Education (PACE) Program.

Physician competence and performance problems contribute to medical errors and substandard health care quality. Assessment of the clinical competence of practicing physicians, however, is challenging. Although physician competence assessment undoubtedly does take place at the local level (e.