a major reason why many developing nations have not made significant advancement in sustainable development (sd) agenda is the neglect of existing building stock which forms the bulk of built assets. although sustainable development is a universal challenge, it cannot be approached in the same way for all nations, but rather practical response can be defined nationally or locally. this paper re...

The term flocculation is often confused with coagulation, although the two refer to different processes. Coagulation is basically electrostatic in nature. It is brought about by a reduction of the repulsive potential of the electrical double layer. The term flocculation is derived from the Latin, “flocculus,” literally a small tuft of wool, or a loosely fibrous structure. Flocculation is brough...

The CHORUS  architecture is designed to support a new generation of open and distributed operating systems. A microkernel provides generic services allowing servers that cooperate within subsystems to offer standard interfaces: a UNIX SVR3.2 interface is available and a UNIX SVR4 interface is under development. The CHORUS microkernel provides services to manipulate actors and threads (memory m...

BACKGROUND Health facilities require teams of health workers with complementary skills and responsibilities to efficiently provide quality care. In low-income countries, failure to attract and retain health workers in rural areas reduces population access to health services and undermines facility performance, resulting in poor health outcomes. It is important that governments consider health w...

In South Africa, as elsewhere, Primary Health Care (PHC) facilities are managed by professional nurses. Little is known about the dimensions and challenges of their job, or what influences their managerial practice. Drawing on leadership and organizational theory, this study explored what the job of being a PHC manager entails, and what factors influence their managerial practice. We specifical...