Abstract. Schema evolution is the increasingly important ability to adapt deployed schemas to changing requirements. Effective support for schema evolution is challenging since schema changes may have to be propagated, correctly and efficiently, to instance data and dependent schemas, mappings or applications. We introduce the major requirements for effective schema and ontology evolution, incl...

BACKGROUND AND OBJECTIVES Training in relationship skills relies heavily on role modeling: students observing clinicians at work. This study explored student and faculty perceptions of student learning about relationship skills in hospital and ambulatory settings. METHODS Qualitative data from focus groups and long interviews were coded by the authors through an iterative dialogic process. Pa...

This dissertation is an attempt to develop and test a comprehensive model for global virtual team effectiveness based on development of partnership among diverse team members and the moderating role of collaborative technology and task interdependence. The model will be tested using filed survey methodology. The model is based on traditional I-P-O framework for understanding team effectiveness....

It is customary for the outgoing President of AIS to publish a report in CAIS on the activities during his or her tenure and on future directions for the organization. This is such a report. On becoming President I was fortunate in finding an organization in good shape thanks to the excellent work of my predecessors. Consequently, AIS faced no immediate crises and it was possible to focus on so...

We describe software to facilitate systematic reviews in environmental science. Eco Evidence allows reviewers to draw strong conclusions from a collection of individually-weak studies. It consists of two components. An online database stores and shares the atomized findings of previously-published research. A desktop analysis tool synthesizes this evidence to test causeeeffect hypotheses. The s...

In most database systems with production rule facilities, rules respond to operations on centralized data and rule processing is performed in a centralized, sequential fashion. In parallel and distributed database environments, for maximum autonomy it is desirable for rule processing to occur separately at each site (or node), responding to operations on data at that site. However, since rules ...

Background & Aims: Amniotic membrane persists for a long time after ocular transplantation (as corneal substitute) and can affect light transmission (transparency). The aim of this study was to evaluate the transparency of amniotic membrane after freeze-drying (lyophilization) and to compare the results with transparency of rabbit cornea. Methods: Transparency of rabbits’ corneas and fresh and ...

Future users of large, interconnected databases and data warehouses will increasingly require schematic transparency of data manipulation systems, in that (i) data from heterogeneous sources must be compared and interrelated and (ii) data must be queried and extracted by distant users having minimal knowledge of its logical structure. A query language that abstracts over meta-data as well as or...

Future users of large, interconnected databases and data warehouses will increasingly require schematic transparency of data manipulation systems, in that (i) data from heterogeneous sources must be compared and interrelated and (ii) data must be queried and extracted by distant users having minimal knowledge of its logical structure. A query language that abstracts over meta-data as well as or...