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Error message

  • User warning: The following module is missing from the file system: biblio_citeproc. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/html/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: biblio. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/html/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: biblio_pm. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/html/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: biblio_crossref. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/html/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: biblio_bibtex. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/html/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: biblio_rtf. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/html/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: biblio_tagged. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/html/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: biblio_marc. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/html/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: biblio_xml. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/html/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: biblio_ris. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/html/includes/bootstrap.inc).

My name is Jungwoo Ryoo. I am Professor of Information Sciences and Technology and the head of the Division of Business, Engineering, and Information Sciences and Technology (BEIST) at the Pennsylvania State University (Altoona College). I am also a graduate/affiliate faculty member of the college of IST at Penn State and a tenured professor of the B.S. degree program in Security and Risk Analysis (SRA) at Penn State Altoona.

You can contact me at:

E-mail jryoo at psu dot edu
Phone 814-949-5243
Fax 814-949-5838
Mailing Address 107 Elm 3000 Ivyside Park, Altoona PA 16601
Public Key Download

My staff assistant is Ms. Angel Goldian (814-949-5756).

If you would like to see me in person, please set up an appointment by contacting Ms. Goldian (via E-mail).