The Infrastructure of modern society is controlled by software systems that are vulnerable to attacks. Many such attacks, launched by ”recreational hackers” have already led to severe disruptions and significant cost. It, therefore, is critical that we find ways to protect such systems and to enable them to continue functioning even after a successful attack. This paper describes AWDRAT, a midd...

The Internet presents numerous sources of useful information—telephone directories, product catalogs, stock quotes, event listings, etc. Recently, many systems have been built that automatically gather and manipulate such information on a user’s behalf. However, these resources are usually formatted for use by people (e.g., the relevant content is embedded in HTML pages), so extracting their co...

Modern database management systems are supporting the inclusion and querying of nonrelational sources within a data federation environment via wrappers. Wrapper development for Web sources, however, is a convolution of code with extraction and query planning knowledge and becomes a daunting task. We use IBM DB2 federation engine to demonstrate the challenges of incorporating Web sources into a ...

Extracting specific information from the vast amount of documents in the World Wide Web is a very tedious task. Manual extraction has high quality output but cannot be automated. Programmed wrappers, on the other hand, suffer from the uncertainty of document structures. The generation of a more generic wrapper for whole classes of textual information, which can accommodate all kinds of document...

In this paper we discuss some aspects of designing low power asynchronous wrappers for use in GALS based communication systems. We propose a general method for designing asynchronous wrappers for use in asynchronous multiport-to-multiport communication channels with low swing busses and variable power supply voltages.

In recent years, much work has been invested into automatically learning wrappers for information extraction from HTML tables and lists. Our research has focused on a system that can learn a wrapper from a single unlabelled page. An essential step is to locate the tabular data within the page. This is not trivial when the structures of data tuples are similar but not identical. In this paper we...

This paper describes an integrated framework for SOC test automation. This framework is based on a new approach for Wrapper/TAM co-optimization based on rectangle packing considering the diagonal length of the rectangles to emphasize on both TAM widths required by a core and its corresponding testing time .In this paper, an efficient algorithm has been proposed to construct wrappers that reduce...

This paper is devoted to the technology of wrappers for legacy data systems reuse. Their characteristics are outlined and a generic wrapper architecture is defined. This architecture is intended to be instanciated for specific legacy data models and systems. A general methodology is proposed to define the architecture components. The methodology is supported by an operational CASE-tool that hel...