Abstract: In one aspect, a system includes a movable barrier operator configured to open and close a movable barrier; at least one ultra-wideband device associated with the movable barrier operator and electrically configured to receive ultra-wideband radio frequency signals; and a processor operatively connected to the at least one ultra-wideband device and configured to use the ultra-wideband radio signals to determine a status of the movable barrier.

Abstract: An information retrieval and evaluation system for receiving information about an organization and evaluating the organization based on that information. The information typically includes data retrieved from one or more data bases and organization-related data obtained in a manual fashion by an evaluation system operator. The information can be evaluated against a set of standards in order to determine any problems or concerns that may be associated with the organization. The information received and the information generated from the evaluation can be inserted into a report. The reports of organizations can be published in an online format or obtained using a search method via the Internet, allowing individuals and corporations to review the reports and determine which organizations they want to invest in or support.

Abstract: Disclosed herein are compounds of formula 1 ##STR1## wherein X is a terminal group, for example, an aryloxycarbonyl, an alkanoyl or an optionally mono- or disubstituted carbamoyl; B is absent or an amino acid residue, for example, Val or Asn; R.sup.1 is hydrogen or a ring substituent, for example, fluoro or methyl; R.sup.2 is alkyl; and Y is a ring substituent, for example, phenoxy, 2-pyridinylmethoxy, phenylthio or 2-pyridinylthio. The compounds inhibit the activity of human immunodeficiency virus (HIV) protease and interfere with HIV induced cytopathogenic effects in human cells. These properties render the compounds useful for combating HIV infections.