A citations analysis Purpose of this paper This paper addresses the question: should the world s top universities be led by top researchers, and are they? Design / methodology / approach The lifetime citations are counted by hand of the leaders of the world s top 100 universities identified in a global university ranking. These numbers are then normalised by adjusting for the different citation...

The authors develop a framework that incorporates projected profitability of customers in the computation of lifetime duration. Furthermore, the authors identify factors under a manager’s control that explain the variation in the profitable lifetime duration. They also compare other frameworks with the traditional methods such as the recency, frequency, and monetary value framework and past cus...

In this study, the feasibility of fluorescence lifetime imaging (FLIM) for measurement of RNA:DNA ratios in microorganisms was assessed. The fluorescence lifetime of a nucleic acid-specific probe (SYTO 13) was used to directly measure the RNA:DNA ratio inside living bacterial cells. In vitro, SYTO 13 showed shorter fluorescence lifetimes in DNA solutions than in RNA solutions. Growth experiment...

Limited energy is the major driving factor for research on wireless sensor networks. Clustering alleviates this energy shortage problem by reducing data traffic conveyed over the network and therefore several clustering methods are proposed in the literature. Researchers put forward their methods by making serious assumptions such as always locating single sink at one side of the topology or ma...

The lifetime risk of acquiring HIV infection in many rural as well as urban areas of southern Africa is currently as high as two-in-three. For women, much of this risk still accrues rapidly at young ages despite high levels of knowledge about HIV/AIDS. Thus, programmes that are more participatory and address underlying structural and community-level factors appear to be essential. We use cross-...

Various non deterministic aspects of object creation in database trans formations are discussed from a modeling as well as from an expressive

The authors propose the use of two new standardized measures of risk, the standardized lifetime risk and the standardized number of years of life lost. These measures maintain the advantages of standardized rates but are more readily understood without special training. In this paper, standardizing weights based on 1992 data from England and Wales are provided, and the new measures are illustra...

Ada ‘95 does not provide for a constructor mechanism with parameters for initializing newly created objects. The package Ada.Finalization provides an initialize procedure which is automatically called at object creation time, but that procedure takes only one argument, i.e. the object being operated upon. This is hardly useful, since initialization of any kind usually requires additional inform...

Since at least the dawn of history, human beings have been interested in their own origins and in the make-up of their world. Most cultures, for example, have "origins" stories in their religions and myths to explain what and who we are. But until what we call "science" gained a foothold, no explanation provided verifiable conclusions. Only with the advent of the scientific method and the ever-...

It is proven that any spherically symmetric spacetime that possesses a compact Cauchy surface and that satis es the dominant-energy and non-negative-pressures conditions must have a nite lifetime in the sense that all timelike curves in such a spacetime must have a length no greater than 10max (2m), where m is the mass associated with the spheres of symmetry. This result gives a complete resolu...