Representation (systemics)

About: Representation (systemics) is a research topic. Over the lifetime, 33821 publications have been published within this topic receiving 475461 citations.

Should research samples reflect the diversity of the population

Abstract: Recent research governance documents say that the body of research evidence must reflect population diversity. The response to this needs to be more sophisticated than simply ensuring minorities are present in samples. For quantitative research looking primarily at treatment effects of drugs and devices four suggestions are made. First, identify where the representation of minorities in samples matters—for example, where ethnicity may cause different treatment effects. Second, where the representation of a particular group matters then subgroup analysis of the results will usually be necessary. Third, ensuring representation and subgroup analysis will have costs; deciding on whether such representation is worthwhile will involve cost benefit analysis. Fourth, the representation of minorities should not be seen as mainly a locality issue. For qualitative research it is argued that the representation of diversity is often important. Given the small samples of many qualitative projects, however, the best way to ensure representation occurs is to allow a proliferation of such research, not to stipulate such representation in samples.

The Representation of Islam and Muslims in the Media.

Abstract: The conference was opened by the Minister of Home Affairs Dato Seri Syed Hamid Albar who delivered a keynote address focusing on the theme of the conference. The Minister said the conference is both critical and timely in view of the fact that Islam is the fastest growing religion and perhaps the most misunderstood religion especially in the West. He stressed that in the present postmodern time mass media have played and continue to play a significant role in asserting and sustaining stereotypical visions and conceptions about Islam and Muslims. “Evidently, this has given rise to a significant amount of confusion and distorted imagination in the mind of the public at large. Thus, labels such as jihadists, extremists, terrorists and fundamentalists are increasingly becoming more and more popular descriptions of Islam in both the mainstream and the non-mainstream media, particularly in the West,” he added.

A spherical representation for the recognition of curved objects

Abstract: The authors introduce a surface representation for recognizing curved objects. The approach begins by representing an object by a discrete mesh of points built from range data or from a geometric model of the object. The mesh is computed from the data by deforming a standard shaped mesh, for example, an ellipsoid, until it fits the surface of the object. Local regularity constraints that the mesh must satisfy are defined. A canonical mapping is then defined between the mesh describing the object and a standard spherical mesh. A surface curvature index which is pose-invariant is stored at every node of the mesh. This object representation is used for recognition by comparing the spherical model of a reference object with the model extracted from a new observed scene. It is shown that the similarity between reference model and observed data can be evaluated, and it is also demonstrated that the pose of the reference object in the observed scene can be easily computed using this representation. >