Background Nigeria accounts for a significant proportion of global maternal mortality figures with little progress made in curbing poor health indices. In a bid to reverse this trend, the Government of Nigeria initiated a conditional cash transfer (CCT) programme to encourage pregnant women utilize services at designated health facilities. This study aims to understand experiences of women who ...

Since recent X-ray observations have revealed that most clusters of galaxies are surrounded by an X-ray emitting gaseous halo, it is reasonable to expect that the Local Group of galaxies has its own X-ray halo. We show that such a halo, with temperature ∼ 1keV and column density ∼ O(10)cm, is a possible source for the excess lowenergy component in the X-ray background. The halo should also gene...

The purpose of this research was to determine the contributions to the Sunyaev-Zeldovich effect from supernova winds at high redshift. In order to accomplish this, the shells were modeled individually to study the dependance of their behavior on the basic input parameters of the system, such as initial redshift and initial dark matter halo mass, especially at asymptotic bounds. Finally, the Com...

With detections of the Sunyaev–Zel’dovich (SZ) effect induced by galaxy clusters becoming routine, it is crucial to establish accurate theoretical predictions. We use a hydrodynamical N -body code to generate simulated maps, of size one square degree, of the thermal SZ effect. This is done for three different cosmologies — the currentlyfavoured low-density model with a cosmological constant, a ...

SUMMARY In this paper we describe a software subsystem that can be added to each of a set of physically interconnected UNIX or UNIX look-alike systems, so as to construct a distributed system which is functionally indistinguishable at both the user and the program level from a conventional single-processor UNIX system. The techniques used are applicable to a variety and multiplicity of both loc...

Two design rules which aid the construction of distributed computing systems and the provision of fault tolerance are described, namely that: (i) a distributed computing system should be functionally equivalent to the individual computing systems of which it is composed, and (ii) fault tolerant systems should be constructed from generalised fault tolerant components. The reasoning behind these ...

For the development of eficient parallel applications, fast but reliable performance predictions are essential. Many existing modelling formalisms are either not directly suited to model parallel applications, or too expensive. This paper describes several extensions and improvements to a previously introduced methodology, based on an extension of queueing networks. The set of machine model bui...

A major debate in the international marketing literature deals with the globalization of markets and the extent to which a company’s international marketing strategy can be standardized (Buzzell, 1968; Cavusgil et al., 1993; Douglas and Wind, 1987; Hill and Still, 1984; Jain, 1989; Levitt, 1983; Sorenson and Wiechmann, 1975). Significant progress has been made with respect to the extent to whic...

A method of analysing linear networks is developed, that is applicable to networks whose elements may have any number of terminals. Each multi-terminal element is handled as a complete entity, without having to represent it as an equivalent network of branches. The theory is based on an unconventional treatment of voltage, which seems to be suitable for the general case, in that voltages are ha...

The goal of the present study was to determine the effects of prolonged, intermittent flexion on trunk neuromuscular control. Furthermore, the potential beneficial effects of passive upper body support during flexion were investigated. Twenty one healthy young volunteers participated during two separate visits in which they performed 1 hour of intermittent 60 seconds flexion and 30 seconds rest...