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A solution algorithm for the transient analysis of bodies undergoing creep under constant or time varying loads is presented. The constitutive equation adopted is of the form: έc=γσm. The finite element formulation is carried out in terms of displacements and creep strains as internal variables. The time discretization is achieved with a trapezoidal time integration scheme. The creep strains are condensed out to give an equation for displacement increments involving a modified stiffness matrix and force vector. A Newton—Raphson iterative scheme is used for the non‐linear creep strain rate‐stress relation, and creep strains are updated at the end of the time step. The algorithm has been implemented in NOSTRUM for two‐dimensional structural and plane continuum problems, with a von Mises type potential function governing the multiaxial creep constitutive relationship. Numerical results are presented.

The purpose of this qualitative case study was to explore perceptions of the impact of program participation on parenting styles and behavioral changes using observations and in-depth semi-structured interviews with Black and Coloured staff and mothers at a community-based organization (CBO) in the Western Cape Province (WCP) in South Africa (SA). Purposive sampling was utilized in this research via the CBO and narratives from a total of twenty-three (twelve mothers and eleven staff) interviews form the basis of this manuscript. Data was collected between January – February 2017 and was analyzed through the phenomenological and inductive thematic analysis approach. The staff interviews revealed that child abandonment and neglect and the abuse of women are the two main environmental contextual factors that impact program participation. According to staff, improved self-esteem and positive life changes were identified as successful outcomes of participant involvement. The parent interviews provided examples of emotional issues such as domestic abuse and personal issues with alcohol and drugs as individual factors that impact their program participation. Changes in parenting styles was identified as successful outcomes among parent participants. The goal of this study was to provide much-needed insight into this community by presenting a variety of voices, specifically Black and Coloured men and women, that are underreported in the literature. Findings from this research adds to the knowledge of community-based parenting programs (CBPPs) for low-income and underserved populations in SA and internationally.

In conditions where a product is subjected to extreme mechanical loading in a very short time, a strain rate has a significant influence on the behaviour of the product’s material. To accurately simulate the behaviour of the material during these loading conditions, the strain rate parameters of the selected material model should be appropriately used. This paper aims to present a fast method with which the proper strain-rate-dependent parameter values of the selected material model can be easily determined.

In the paper, an experiment was designed to study the behaviour of thin, flat, metal sheets during an impact. The results from this experiment were the basis for the determination of the strain-rate-dependent parameter values of the Cowper–Symonds material model. Optimisation processes with different numbers of required parameters of the selected material model were performed. The optimisation process consists of the method for design of experiment, modelling a response surface and a genetic algorithm.

The paper provides comparison of two optimisation processes with different methods for design of experiment. The performances of the presented method are compared and the engineering applicability of the results is discussed.

This paper presents a new fast approach for the identification of the parameter values of the Cowper–Symonds material model, if these cannot be easily determined directly from experimental data.

GUEST editor of this South African issue of THE LIBRARY WORLD is Hendrik M. Robinson, Director of Library Services, Transvaal Provincial Administration, Pretoria.

This chapter traces the evolution of political–administrative relationships in the South African public service. It traces how segregation and apartheid laid down the foundation of the country’s governmental system. The public service was effectively set up for Whites and poorly resourced self-governing territories were set up for Blacks. The National Party (NP) was in office from 1948 to 1994 and this long period in office led to the politicisation of the bureaucracy, with public servants gradually starting to adopt the government’s way of thinking instead of being impartial. In the 1980s, under President P.W. Botha, the government embarked on public sector reform, which included politicisation of the top levels of the public sector.

The role of the PSC/CoA is discussed – it had omnipotent human resources powers over the public service, particularly during the dying days of apartheid. The chapter then examines constitutional change in the 1990s, looking at both the Interim and Final Constitutions, which laid down the foundation of a democratic society. There is particular emphasis on political–administrative relationships and the declining influence of the PSC.

The purpose of this paper is to provide an indication as to the motivation of people to remain in academic positions where substantial economic inequity is present and more favourable alternative employment is possible. This is important for the retention of qualified academic staff in Papua New Guinea (PNG) and for the supply of well-educated workers in this developing country.

The authors surveyed 94 national (indigenous) academic staff at a prominent PNG university for their perceptions of organisational justice and management support, with an aim determining if these variables were related to workers’ affective commitment (AC) and intentions to turnover. The surveyed staff members are all employed on an inequitable basis in that their salaries and living conditions are inferior to those of equally qualified expatriate academic staff.

The research found that staff members’ emotional connection (affective commitment (AC)) to their work was predicted by organisational support, whereas lack of organisational support predicted academic staff turnover.

Universities must provide supportive environments to enable staff to remain focussed and committed in order to maintain high morale and reduce turnover in academic staff.

Previous research on this topic has emphasised the economic inequity faced by national academic staff members in PNG’s high education institutions. The current research applies motivation theory to people experiencing this obvious inequity. It finds that an environment where workers experience management support and a sense of intrinsic reward can effectively influence their intention to remain at their place of work as well as their emotional connection to their institution and their students.