Democracy and the emergent present in Africa: interrogating the historical assumptions

Paper presented at the Wits History Workshop: Democracy, Popular Precedents, Practice and Culture, 13-15 July, 199

Rhetoric and representation: The narrative and discourses surrounding the contest for the burial of S.M. Otieno, Kenya, 1986-1987

African Studies Seminar series. Paper presented July 199

PEDOT:PSS charge storage devices integrated into textiles for smart textile application

Smart textile systems enable interaction of the user with his/her environment through sensing and actuation. They find application in sports garment, future fashion with visual light interaction, health and tele monitoring, sound responsive garments for managing autism, and in personal protective clothing etc. Smart textile systems consist of sensors, actuators, power supply unit, data processors and interconnects for transmission of signals and/or data. The energy supply unit can either be energy generated on the spot, or as a form of stored energy in batteries. Currently, the batteries used with smart textile systems, are non-flexible, bulky and weighty, and cannot be compared with the comfort of the textiles themselves. Therefore, this research addresses the fabrication of a suitable charge storage device well integrated into textile and that could provide power to the smart textile system. The developed devices are light weight, flexible and reliable

Electrochemical impedance analysis of a PEDOT : PSS-based textile energy storage device

A textile-based energy storage device with electroactive PEDOT:PSS (poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate)) polymer functioning as a solid-state polyelectrolyte has been developed. The device was fabricated on textile fabric with two plies of stainless-steel electroconductive yarn as the electrodes. In this study, cyclic voltammetry and electrochemical impedance analysis were used to investigate ionic and electronic activities in the bulk of PEDOT:PSS and at its interfaces with stainless steel yarn electrodes. The complex behavior of ionic and electronic origins was observed in the interfacial region between the conductive polymer and the electrodes. The migration and diffusion of the ions involved were confirmed by the presence of the Warburg element with a phase shift of 45° (n = 0.5). Two different equivalent circuit models were found by simulating the model with the experimental results: (QR)(QR)(QR) for uncharged and (QR)(QR)(Q(RW)) for charged samples. The analyses also showed that the further the distance between electrodes, the lower the capacitance of the cell. The distribution of polymer on the cell surface also played important role to change the capacitance of the device. The results of this work may lead to a better understanding of the mechanism and how to improve the performance of the device

Mathematical model predicting the heat and power dissipated in an electro-conductive contact in a hybrid woven fabric

Electro-conductive (EC) yarns can be woven into a hybrid fabric to enable electrical current to flow through the fabric from one component A to another component B. These hybrid fabrics form the bases of woven e-textiles. However, at the crossing point of an EC yarn in warp and in weft direction, there is a contact resistance and thus generation of heat may occur in this area. Both phenomena are inseparable: if the contact resistance in the EC contact increases, the generated heat will increase as well. Predicting this electrical and thermal behavior of EC contacts in hybrid woven fabrics with stainless steel yarns is possible with a mathematical model based on the behavior of a metal oxide varistor (MOV). This paper will discuss in detail how this can be achieved

DIELECTRIC ABSORPTION IN PEDOT:PSS CAPACITORS WITH STAINLESS STEEL YARN ELECTRODES IN TEXTILE SUBSTRATES

Capacitors have been made on textile substrates. Stainless steel yarns were used as electrodes. The dielectric material was a mixture of PEDOT and PSS. Stainless steel yarns were used as the electrodes. These capacitors are developed to be inserted in wearable textiles, a research field called smart textiles. After charging, a spontaneous discharge was observed lasting for several hours. By connecting a small resistance or even a short circuit for a certain time, it was observed that the voltage starts to rise afterwards when the load resistor or the short circuit was removed. This phenomenon is known as dielectric absorption. It was observed for the PEDOT:PSS cells that the voltage recovery is relatively high as compared to other materials

Challenges to generating political prioritization for adolescent sexual and reproductive health in Kenya: A qualitative study.

BackgroundDespite the high burden of adverse adolescent sexual and reproductive health (SRH) outcomes, it has remained a low political priority in Kenya. We examined factors that have shaped the lack of current political prioritization of adolescent SRH service provision.MethodsWe used the Shiffman and Smith policy framework consisting of four categories-actor power, ideas, political contexts, and issue characteristics-to analyse factors that have shaped political prioritization of adolescent SRH. We undertook semi-structured interviews with 14 members of adolescent SRH networks between February and April 2019 at the national level and conducted thematic analysis of the interviews.FindingsSeveral factors hinder the attainment of political priority for adolescent SRH in Kenya. On actor power, the adolescent SRH community was diverse and united in adoption of international norms and policies, but lacked policy entrepreneurs to provide strong leadership, and policy windows were often missed. Regarding ideas, community members lacked consensus on a cohesive public positioning of the problem. On issue characteristics, the perception of adolescents as lacking political power made politicians reluctant to act on the existing data on the severity of adolescent SRH. There was also a lack of consensus on the nature of interventions to be implemented. Pertaining to political contexts, sectoral funding by donors and government treasury brought about tension within the different government ministries resulting in siloed approaches, lack of coordination and overall inefficiency. However, the SRH community has several strengths that augur well for future political support. These include the diverse multi-sectoral background of its members, commitment to improving adolescent SRH, and the potential to link with other health priorities such as maternal health and HIV/AIDS.ConclusionIn order to increase political attention to adolescent SRH in Kenya, there is an urgent need for policy actors to: 1) create a more cohesive community of advocates across sectors, 2) develop a clearer public positioning of adolescent SRH, 3) agree on a set of precise approaches that will resonate with the political system, and 4) identify and nurture policy entrepreneurs to facilitate the coupling of adolescent SRH with potential solutions when windows of opportunity arise

The legislative and regulatory framework governing herbal medicine use and practice in Kenya: a review

Complementary and alternative medicine is an integral component of primary healthcare in Kenya. This is because the infrastructural health setup in the country is inadequate in catering for all the medical needs of the population. This particularly holds true in the rural areas where many rural folk rely on products of herbal origin to offset their healthcare needs. More often than not these products are an elaborate cacophony of several different substances of biological origin and thus need personnel adept in their preparation. Sadly, due to loopholes in legislation and regulation, quacks have a field day in the practice. Moreover, the process of planting, harvesting, preparation and storage of herbs and related products dictates that a significant number of people will ultimately be involved in the whole process. This is likely to set the stage for manipulation and compromise of the safety, quality and efficacy of these products. This state of affairs appears unabated especially in the context of the current legal and regulatory framework governing herbal medicine use and practice in Kenya. Not only are these laws inadequate, they are shrouded in ambiguity, open to interpretation and the authorities mandated to implement them often end up performing duplicate roles. The aim of this review is to critique the legal and regulatory provisions governing herbal medicine use and practice in Kenya. In conclusion, laws and regulations meant to control herbal medicine use and practice in Kenya are wanting. Clear and definitive legislation on herbal medicine use and practice coupled with effective implementation by mandated institutions will go a long way in inspiring confidence to all stakeholders of herbal medicine.Keywords: Herbal medicine, legislation, regulatory framework, Keny

Navigating and negotiating ethnographies of urban hustle in Nairobi slums

This paper reflects on doing and writing ethnography on the urban margins, where uncertainty and provisionality mark the everyday city. The discussion is situated within a postcolonial approach to ethnographies of ‘hustle’ in Nairobi slums, critically reflecting on methodological choices made to facilitate the licence to linger in intimate and interstitial spaces of neighbourhoods often closed off to visitors. The paper argues that while urban ethnography is foundational to postcolonial scholarship on African cities, it is also vexed with tensions between ethnographic experience of the provisional and uncertain lived reality in which ethnographers seek to embed themselves for periods of time, and the ethnographic representation that emerges in the form of ethnographic authorship. The paper engages with the methodological tactic of engaging in waste work as an ‘apprentice researcher’; and with the theoretical choice of deploying the very vocabularies and expressions of struggle of interlocutors living and working in the ‘slums’ of Nairobi

From the Political Platform to the Village Farm : Perspectives on African Development

Odhiambo Atieno. From the Political Platform to the Village Farm : Perspectives on African Development. In: Journal des africanistes, 1991, tome 61, fascicule 1. pp. 103-106