VTLS: Virginia Polytechnic Institute and State University – revised search sheet

Abstract

The following VTLS Virginia Polytechnic search sheet updates the 1991 search sheet published in the first edition of Search Sheets for OPACS on the Internet. Principal changes are new telnet and IP address, keyword and Boolean search capabilities. VTLS now offers a novice menu-driven mode which is evoked by <?>. The menu-driven mode does not prompt the user on keyword and Boolean searching. Patrons can switch between menu and command searches by entering a search command or typing /help to see the command help screen (Figure 1).Access to additional commands and information about the library is shown when <n><s> is typed (Figure 2).The VTLS OPAC can also be reached using Virginia Polytechnic Library's web page, reachable at URL http://vatech.lib.vt.edu/. The VTLS OPAC is the first choice on its web page (Figure 3).Choosing "1. VTLS" gives you access to the catalog producer, VTLS Inc. home page which, in turn, opens up information about using electronic forms for searching the catalog, and the Z39.50 interface. If you want to connect directly with the VTLS Inc. home page, the URL is http://vtls.com/ (Figure 4).Searching Virginia Tech's OPAC using the command mode seems to give the most information about retrieval. For example, in a keyword search using a word stem, VTLS OPAC may return a detailed analysis (Figure 5).VTLS offers available commands at each menu screen. Patrons can usually rely on seeing available commands at the bottom of the screen. The command to view a MARC record, ma, is an exception, but appears to be one of the few commands that is not explained (Figure 6). To access VTLSThere are two steps to accessing VTLS:(1) Type telnet vtls.vt.edu or Telnet 128.173.16.7. (2) Hit {Return} once or twice. To exitHit the Telnet escape key to exit.

Computation of Wave Propagation in Damped Specimen for Damage Detection

“…Macro-Fiber Composite sensors (MFC) transducers are used to locate the wave source as they show significant directivity behavior to antisymmetric Lamb waves compared to the conventional PZT transducers [7]. The response of MFC transducers to flexural (A 0 ) mode of Lamb waves is decomposed into the longitudinal and transverse sensitivity factors which extract the incoming wave directions [8,9]. Using the strain gage rosette concepts adapted for piezoelectric transducers, the wave strain principal angle can be determined.…”