Effective communication between instructors and students is a challenge regardless of the instructor-to-student ratio. Instructors of large classes, in particular, have resorted to various forms of Internet communication, such as mailing lists and newsgroups, to supplement class time and office hours. Mailing lists are closed discussions among subscribers who receive and send messages via an el...

We describe Shibboleth, a program to manage private Internet mailing lists. Differing from other mailing list managers, Shibboleth manages lists or groups of lists which are closed, or have membership by invitation only. So instead of focusing on automating the processes of subscribing and unsubscribing readers, we include features like SMTP forgery detection, prevention of outsiders’ ability t...

This paper presents the design philosophy of the Hyperflow visual programming language. It also gives an overview of its semantic model. The primary purpose of the language is to provide a user interface for a pen-based multimedia computer system designed for school children. Yet it is versatile enough to be used as a system programming language. The concept of visually interactive process, vip...

In this paper, we first discuss a problem of developing a knowledge base by using natural language documents: wrong information in natural language documents. It is almost inevitable that natural language documents, especially web documents, contain wrong information. As a result, it is important to investigate a method of detecting and correcting wrong information in natural language documents...

In early 1998, we were asked by Corporate Communications to develop a facility for providing a subscription based internal company mailing list capability that would permit Senior Executive management to send messages on an irregular basis from anywhere in the world. Shortly thereafter, we were also asked to provide a one-use-only mechanism to send all 175,000 worldwide employees a (self-qualif...

The detection of unknown viruses is beyond the capability of many existing virus detection approaches. In this paper, we show how proactive customization of system behaviors can be used to improve the detection rate of unknown malicious executables. Two general proactive methods, behavior skewing and cordoning, and their application in BESIDES, a prototype system that detects unknown massive ma...

We describe Shibboleth, a program to manage private Internet mailing lists. Differing from other mailing list managers, Shibboleth manages lists or groups of lists that are closed, or have membership by invitation only. So instead of focusing on automating the processes of subscribing and unsubscribing readers, we include features like SMTP forgery detection, prevention of outsiders’ ability to...