Directed teaching and constructivist teaching and technology

The utilization of the computer in the classroom as a tool to provide instruction and aid learning has had a profound impact on how educators deliver instruction. Computers have become such an important instructional tool that many educators have had to rethink and reevaluate their beliefs and ideas about the ways in which they instruct students and how students learn. Most educators have encouraged and promoted the use of computers in the classroom to assist them in providing students with an efficient and up-to-date means of acquiring the skills and knowledge they need to succeed in learning. Because of its diversity in delivering as well as supporting instructional concepts, many teachers have embraced its use. However there are those educators who feel insecure in its application in the classroom as a tool of instruction and question its usefulness to adequately provide instruction to their students. This paper will attempt to determine how the belief systems and opinions of classroom teachers impact their utilization of computers in their teaching practices. Questionnaires were developed to determine the belief systems and opinions of elementary educators who would be defined as utilizing the directed teaching method or constructivist method in their approach to teaching and learning and how these belief systems impacted their utilization of computers in their classroom practices

Can one hear the shape of a saturation patch?

The theory of the acoustics of patchy-saturation in porous media is used to analyze experimental data on wave velocity and attenuation in partially water saturated limestones. It is demonstrated that the theory can be used to deduce the value of V/A, the ratio of the volume to area of the water patch, and l_f, the Poisson size of the water patch. One can ``hear'' the shape of a patch if the properties of the rock and the measurement frequencies are such as to satisfy the specific requirements for the validity of the theory

High directivity modes in the koch island fractal patch antenna

The article shows that a patch antenna with fractal boundary exhibits, at a frequencies above the fundamental mode, localized modes. These modes can have broadside directive patterns. As an example of this phenomenon experimental data on the Koch island patch antenna is presented.Peer ReviewedPostprint (published version

Rethinking the Patch Test for Phase Measuring Bathymetric Sonars

While conducting hydrographic survey operations in the Florida Keys, NOAA Ship Thomas Jefferson served as a test platform for the initial operational implementation of an L-3 Klein HydroChart 5000 Swath Bathymetry Sonar System1 , a hull-mounted phase measuring bathymetric sonar (PMBS). During the project it became apparent that the traditional patch test typically utilized for multibeam echosounder (MBES) systems was poorly suited to the HydroChart – and perhaps other PMBS systems as well. These systems have several inherent characteristics that make it difficult to isolate and subsequently solve for biases under the traditional patch test paradigm: presence of a nadir gap, wide swaths (typically greater than 6 times water depth), and relatively poor object-detection capability in the outer swath. After “rethinking” the patch test to account for these characteristics, the authors propose a new patch test paradigm that is better suited to the HydroChart and other PMBS systems

Davie\u27s Corn Patch

Fiction by Margaret Ree