Evaluation of a Location Linked Notes System

We present a location-aware messaging system that lets users read and post notes tied to a particular location. We developed multiple clients (desktop, PDA and cell phone) so that users could choose the most contextually-appropriate device to interact with the system. We allowed remote access and authoring to avoid imposing artificial restrictions on users. We report on our initial evaluation of the system. The goal of the evaluation was to explore novel potential uses of the system and to identify users' preferences regarding the different system features. In our evaluation, we found that users were receptive of this system for leaving and receiving location-targeted reminders. They also overwhelmingly approved of the remote access and authoring capability, and suggested scenarios where these features would be crucial. We discuss our experiences building the system and our findings from the initial evaluation

Schema Mapper: A Visualization Tool for DL Integration

Schema mapping is a challenging problem. It has come to the fore in recent years; there are important applications like database schema integration and, more recently, digital library merging of heterogeneous data. Previous studies have approached the schema mapping process either from algorithmic or visualization perspectives, with few integrating both. With Schema Mapper we demonstrate a semi-automatic tool for schema integration that combines a novel visual interface with an algorithm-based recommendation engine. Schemas are visualized as hyperbolic trees (see Fig. 1), thus allowing more schema nodes to be displayed at one time. Matches to selections are recommended to the user, which makes the mapping operation easier and faster

Integration of Heterogeneous Digital Libraries with Semi-automatic Mapping and Browsing: From Formalization to Specification to Visualization

In this paper, we formalize the digital library (DL) integration problem and propose an overall approach based on the 5S framework. We apply 5S to domain-specific (archaeological) DLs, illustrating our solutions for key problems in DL integration. We use ETANA-DL as a case study to describe the process of semi-automatically generating a union catalog and a unified browsing service in an archaeological DL. A visual schema mapping tool is developed for union catalog creation. A pilot user study aids tool evaluation. Our approach is further validated through application of a general browsing component to two integrated DLs

Database Availability for Transaction Processing

Abstract Modern businesses store A transaction processing critical data in database system relies on its management systems. Much database management of the daily activity system to supply high of business includes availability. Digital manipulation of data offers a network-based in the database. As product, the VAX DBMS businesses extend their system, and a relational operations worldwide, data-based product, the their databases are shared VAX Rdb/VMS database among office locations system, for its transaction in different parts of processing systems. These the world. Consequently, database systems have these businesses require several strategies to transaction processin

Elinikäisen oppimisen edellytykset ammatillisen koulutuksen reformeissa

Automation is an important issue when integrating heterogeneous collections into archaeological digital libraries. We propose an incremental approach through intermediary- and mapping-based techniques. A visual schema mapping tool within the 5S framework allows semi-automatic mapping and in-cremental global schema enrichment. 5S also helped speed up development of a new multi-dimensional browsing service. Our approach helps integrate the Me-giddo excavation data into a growing union archaeological DL, ETANA-DL