This paper tries to point out some of the promises, quarrels, achievements, and perspectives of the forced marriage between the relational and objectoriented data models, from both theoretical and implementation perspectives. As practical O-R achievements, the latest SQL standards (SQL:1999-2008) and Oracle implementation are discussed

In a previous paper, we showed that Earth-type habitable planets around 47 UMa are in principle possible if a distinct set of conditions is warranted. These conditions include that the Earth-type planets have successfully formed and are orbitally stable and, in addition, that the 47 UMa star–planet system is relatively young (96 Gyr). We now extend this study by considering Earth-like planets w...

An important aim of this paper is to increase the level of rigor that we use to understand the role of the state as an institution determining the economic performance of other institutions. More specifically, we seek to increase our understanding of the role of the state in determining the economic performance of two distinct type of markets: “spontaneous” markets and “socially contrived” ones...

Mobile sensing systems have been widely used as a practical approach to collect behavioral and health-related information from individuals provide timely intervention promote health well being, such mental chronic care. As the objectives of mobile could be either personalized medicine for individua...

It is a fact of experience from the study of higher type computability that a wide range of approaches to defining a class of (hereditarily) total functionals over N leads in practice to a relatively small handful of distinct type structures. Among these are the type structure C of Kleene-Kreisel continuous functionals, its effective substructure C, and the type structure HEO of the hereditaril...

Situational interest is the positive affect and sustained attention triggered by particular contexts (Hidi & Renninger, 2006). Some studies show interesting information enhances learning while others find it hinders learning, producing the seductive detail effect. Limited evidence suggests the seductive detail effect is weakened if emotionally interesting information is relevant to main ideas. ...

While traditional IS design literature emphasizes understanding of end users from perspectives such as cognitive fit and technology acceptance, it fails to consider the economic dimensions of their interactions with a system. When viewed as economic agents who participate in electronic markets, it is easy to see that users’ preferences, behaviors, personalities, and ultimately their economic we...

CURRENT SCIENCE, VOL. 86, NO. 8, 25 APRIL 2004 1161 *For correspondence. (e-mail: [email protected]) 4. Randles, J. W. and Rathjen, J. P., In Virus Taxonomy. Sixth Report of the International Committee on Taxonomy of Viruses (eds Murphy, F. A. et al.), Springer-Verlag, Vienna, 1995, pp. 379– 383. 5. Bosque-Perez, N. A. and Buddenhagen, I. W., Plant Dis., 1990, 74, 372–378. 6. Carazo, G.,...