We combine 10 high resolution resimulations of cluster–sized dark haloes with semi– analytic galaxy formation modelling in order to compare the number density and velocity dispersion profiles of cluster galaxies with those of dark matter substructures (subhaloes). While the radial distribution of galaxies follows closely that of the dark matter, the distribution of dark matter subhaloes is much...

We present a comparison of halo properties in cosmological simulations of collisionless cold dark matter (CDM) and self-interacting dark matter (SIDM) for a range of dark matter cross sections. We find, in agreement with various authors, that CDM yields cuspy halos that are too centrally concentrated as compared to observations. Conversely, SIDM simulations using a Monte Carlo N -body technique...

We present a new form of summarization for scientific domains in the form of conceptual maps which model the hierarchy and the relations among problems and solutions in a domain as presented in scientific articles.

Recent developments in the area of smart structures indicate that variable geometry / stiffness truss network is of fundamental importance in designing smart transformable structures and systems for space applications. This paper presents the conceptual design and dynamic modeling of a cooperative re-configurabel dual-arm robotic structure called Dual-Arm Cam-Lock Manipulator. The Manipulator i...

For developing good quality information systems, the need of developing good quality conceptual models cannot be over emphasized. To improve the quality of a conceptual model, schema transformation rules have been proposed in our previous research. For applications developed using relational database management systems, conceptual models are translated into relational schema and the quality of ...

This paper develops an organization design-oriented conceptual model of scientific knowledge production through citizen science virtual organizations. Citizen science is a form of organization design for collaborative scientific research involving scientists and volunteers, for which Internet-based modes of participation enable massive virtual collaboration by thousands of members of the public...

the goal of this study was to investigate the effect of using computer conceptual maps­, compared with  usual way of drawing them by pencil and paper­, in increasing learning, recalling and educational progress motivation in geology course among high school students. the study was conducted in semi experimental method in which students of 3 classes were classified in 3 groups. (group 1: common ...

It is widely believed that the legal institution of the contract of employment is currently undergoing a conceptual crisis as a result of changes in labour markets, the organisation of production, and the form of the enterprise. A historical and comparative perspective, however, indicates that conceptual crises of this kind are nothing new, and have occurred periodically in the systems of weste...

the endurance of any type of architecture is contingent upon the study of the characteristics that led to its formation. two general approaches have been adopted to study and analyze the iranian architecture. a number of scholars have taken a historical approach, while others have merely considered a genre- based approach. making use of many historical studies, these scholars have attempted to ...

Conceptual modeling is widely recognized to be the necessary foundation for building a database that is well-documented and fully satisfies the user requirements. In particular, from the designer point of view the availability of a conceptual model provides a higher level of abstraction in describing the warehousing process and its architecture in all its aspects. Typically conceptual models re...