Abiotic stresses create an unfavourable environment for plant growth, increasing the possibilities of low yield and associated economic loss. Several steps have been taken to address this problem. During last twenty years, techniques genetic engineering/transgenic breeding made significant advances in gene manipulation inciting desirable traits transgenic plants. Transgenic allow us identify po...

In the last years, despite a vast amount of work have been devoted to modeling multidimensionality, multidimensional algebra translation to SQL have been overlooked. ROLAP tools automatically generate a cubequery according to the operations performed by the user. The SQL translation does not represent a problem when treating isolated operations but when mixing up together modifications brought ...

In this paper we improve the UML2.0 Collaboration Templates mechanism to better support patterns in UML CASE tools. Collaboration Templates are not versatile enough to support patterns correctly. First, they constrain their parameters inappropriately. Second, the instantiation of UML Collaboration Templates does not allow to modify or to suppress model elements which is sometimes necessary. Bot...

Distance education is now an integral part of offering courses in many institutions. With increasing access to the Internet, the importance of distance education will only grow. But, to date, the specific benefits that distance education brings to student learning objectives remain unclear. We first propose a framework that links student performance and satisfaction to the learning environment ...