Thermotropic Nematic and Smectic Order in Silica Glass Nanochannels

Optical birefringence measurements on a rod-like liquid crystal (8OCB), imbibed in silica channels (7 nm diameter), are presented and compared to the thermotropic bulk behavior. The orientational and positional order of the confined liquid evolves continuously at the paranematic-to-nematic and sizeably broadened at the nematic-to-smectic order transition, resp., in contrast to the discontinuous and well-defined second-order character of the bulk transitions. A Landau-de-Gennes analysis reveals identical strengths of the nematic and smectic ordering fields (imposed by the walls) and indicates that the smectic order is more affected by quenched disorder (originating in channel tortuosity and roughness) than the nematic transition.Comment: 3 pages, 4 figure

TRAINING TEACHERS TO IMPLEMENT SYSTEMATIC STRATEGIES IN PRESCHOOL CLASSROOMS WITH FIDELITY

This study examined the fidelity of implementation by four Head Start teachers using the teaching strategies of constant time delay, enhanced milieu teaching, and system of least prompts with children with and without disabilities in an inclusive early childhood setting. The teachers worked with the researcher to determine appropriate skills to target for each teaching strategy. A multiple probe across behaviors design replicated across four teachers was used to determine the effects of teachers’ fidelity of implementation of evidence-based teaching strategies. The results showed that Head Start teachers could implement systematic teaching strategies with fidelity. The study also examined if children with and without disabilities can make progress towards their target skills. The results showed that children were able to make progress towards their target skills

Carter County - Schools

A 1993 manuscript written by Hubert V. Crawford titled Carter County Public School System: Then and Now

Carter County - Carter Caves

A history of the founding of Carter Caves Park by Hubert V. Crawford written sometime in the 1990s