This study examined the impact of cooperative learning activities on student achievement and attitudes in large-enrollment ( 250) introductory biology classes. We found that students taught using a cooperative learning approach showed greater improvement in their knowledge of course material compared with students taught using a traditional lecture format. In addition, students viewed cooperati...

Nowadays it has been widely recognized that traditional transaction models with ACID (Atomicity, Consistency, Isolation and Durability) properties generally are not applicable to cooperative applications. To solve this problem, a new transaction model called CovaTM is proposed. CovaTM views one execution of a cooperative process as a transaction with its sub-transactions corresponding to activi...

This chapter surveys extended transaction models proposed to support long duration, interactive and/or cooperative activities in the context of multi-user software development and CAD/CAM environments. Many of these are variants of the checkout model, which addresses the long duration and interactive nature of the activities supported by environments but still isolates environment users, making...

Non-standard database applications like CAD, CASE, or cooperative authoring systems impose new requirements on database management systems (DBMS). While object-oriented DBMS provide appropriate data modelling facilities they still lack adequate transaction management support for this kind of applications. Cooperative authoring processes are mainly characterized by long duration activities that ...

The key to enterprise process simulation and process enactment is to implement enterprise process cooperative schedule, i.e., how to control the execution order of the scheduled activities according to cooperative behavior rules under resource constraints. This paper proposes a dynamic PERT/CPM approach using a compound number, and discusses its applications to dynamic enterprise process schedu...

The performance of women agribusiness cooperatives in Oyo State, Nigeria was assessed in this study. The study employed a multi-stage sampling technique to select 6 women cooperative groups (aggregating to 175 individuals); 36 individual women; and 4 institutions across 6 LGAs in two agricultural zones of the State. Findings show that majority (55.6%) of the respondents belong to processing org...

In cooperative web information systems, an evaluation of the quality of exchanged data is essential for building mutual trust among cooperating organizations and correctly performing cooperative activities. Several quality dimensions, related to the intrinsic nature of data and to the context of the cooperative process where data are used, must be taken into consideration. In addition, in order...