The purpose of this study was to investigate the effects of hands-on activities incorporating a cooperative learning approach on eighth grade students’ science process skills and attitudes toward science. The sample of this study consisted of 55 students, from two different eighth grade classrooms in an elementary school, which were instructed by the same science teacher. The classrooms were as...

A significant amount of research in the field of Computer-Supported Cooperative Work has been done to understand the mutual shaping of collaboration technologies and work practices. The outcome of such research helped improving the design of information systems as well as improving the related design processes with regard to a better technology-practice fit. Nevertheless, the approaches to supp...

* From Kyng & Mathiassen (1997). Computers and Design in Context. pp. 201-238. This chapter represents a step towards the establishment of a new system development approach, called Cooperative Experimental System Development (CESD). CESD seeks to overcome a number of limitations in existing approaches: specification oriented methods usually assume that system design can be based solely on obser...

This paper discusses a design methodology of cooperative trajectory generation for multi-robot systems. The trajectory of achieving cooperative tasks, i.e., with temporal constraints, is constructed hy a nonlinear trajectory generation (NTG) algorithm. Three scenarios of multi-robot tasking are proposed at the cooperative task planning framework. The NTG algorithm is, then, used to generate rea...

Until recently, the engineering design community has focused on addressing isolated engineering design tasks by developing systems such as computer-aided design (CAD), computer-aided manufacturing (CAM), computer-aided engineering (CAE), or product data management (PDM). Each of these systems has been designed to assist the engineer in a specific task that required little if any cooperation wit...

The paper addresses cooperation issues in dynamic distributed business process management enabled by the coalitions of task performing economically rational agents. Tasks are understood as partially ordered sets of activities performed in interaction between participants according to a defined set of rules in order to achieve a common goal. Agents represent intelligent actors having their roles...

Recently, peptide microarrays have been used to distinguish proteins, antibodies, viruses, and bacteria based on their binding to random sequence peptides. We reported on the use of peptide arrays to identify enzyme modulators that involve screening an array of 10,000 defined and addressable peptides on a microarray. Primary peptides were first selected to inhibit the enzyme at low μM concentra...

We propose a transactional activity model (TAM) for speciication and management of open-ended cooperative activities. In contrast to each of the extended transaction models which focus more on a formal template for data processing patterns in an application, the activity model contains a set of formal templates, namely activity patterns, for capturing patterns of object interactions in an appli...

In e-Business scenarios, an evaluation of the quality of exchanged data is essential for developing service-based applications and correctly performing cooperative activities. Data of low quality can spread all over the cooperative system, but at the same time, improvement can be based on comparing data, correcting them and disseminating high quality data. In this paper, an XML-based broker ser...