Irrespective of the short academic history of Christian spirituality, a vast number of academic and popular publications ensued and is still dynamically growing. Many definitions have been proposed to define (Christian) spirituality. Spirituality is also no longer connected only to religion, although in this research the focus will fall on Christian spirituality. This research intends to partake in the continuing academic dialogue to define Christian spirituality. Christian spirituality is interpreted from the perspective of the divine-human conversation. This research consists of three sections. In the first section, a working definition of Christian spirituality is formulated. In the second section, various aspects that constitute spiritualities are distinguished and discussed. In the last section, the constituents of Christian spirituality are pointed out and are reviewed from a conversational perspective. The focus will be on ‘the experience of the divine’ when living a life that resonates with the Christian life.

The role of territoriality was investigated by studying 25 impala rams at a reserve in the Waterberg region of South Africa (23°45'S, 28°23'E). Mean territorial tenure was 67.25 days (range 23-

This article investigates how Trinity features are presented in the Gospel of John and how the early Christians experienced the Trinity in their daily lives. The immanence and ‘lived experiences’ of the divine are fostered by how the immanence of the divine is expounded in terms of the familia Dei: God as Father, the Logos as Son of God, believers as Children of God and the Spirit-Paraclete as the one who constitutes the family and educates the children in the family. Therefore, in this article, the familia Dei will be the facilitating hermeneutical principle used to examine the divine fellowship as well as the ‘lived experiences’ and immanence of the divine in early Christian everyday living. John’s reflection on perichoresis lies embedded in a ‘fellowship’ perspective. The divine fellowship is investigated from the four perspectives of how the divine is identified in John: life in the familia Dei, love in the familia Dei, unity in the familia Dei and glorification in the familia Dei.

During the early church’s initial expansion phase where congregations were established in Syria, Asia Minor, Achaia, Italy and Africa there were strong leadership structures in Alexandria, Carthage, Hippo Regius and Ethiopia. Over a period of two millennia the Christian church with a westernised character has spread all over Africa. Today there is a strong African consciousness and critical approach to Africanise Christianity, to decolonise it and to de-Westernise it. This research endeavours to contribute to the dialectic and critical debate and reasoning surrounding the Africanising of Christianity. There is the attempt, from a holistic perspective, to set some hermeneutical principles in place within this approach. This article approaches this topic from three perspectives. Firstly, it gives a brief overview of the spread and growth of Christianity into Africa with reference to six epochs to contextualise the reasoning in the following sections. Secondly, it points out some difficulties that were experienced during the rapid growth of Christianity and changes in its theology. During the past few decades Africa has not only endeavoured to regain its political and cultural identity, but also to claim an own Christian identity by Africanising Christianity. Thirdly, the article discusses some proposed hermeneutical principles that should be considered during the formation of a new Christian identity.

Digital Surface Models (DSM) are widely used in the earth sciences. It provides information for various geological studies and other applications. There are a number of methods for automatic DSM generation, each of which has its own strengths and weaknesses, none of which are perfect. Even though there are plenty of algorithms to date which can generate the DSMs, it is a computationally complex calculation and does tend to take some time to complete. In order to achieve faster DSMs, an algorithm was implemented on a Graphics Processing Unit. This platform greatly improves the processing speed but does have some drawbacks; namely, no support for double precision floating point values, limited memory and algorithms has to be adapted to be usable in a stream processor environment. A speed performance increase of 900% was obtained while having a negligble decrease in accuracy. The GPU does offer a more efficient platform for computationally extensive digital surface modelling applications.