This dissertation collects principles and insights from various sources related to design for the developing world. These principles and insights form part of the foundation that can guide other engineers working in this area. The sources are the published literature, practitioners, non-governmental organizations, and our own field studies. From the engineering literature, we identified nine principles to guide engineers as they design poverty alleviating products for developing communities. Each principle is articulated, supporting literature is described, an in-depth example from the literature is given, followed by suggestions for how the principle can be applied to day-to-day engineering activities. Next, the work from engineering practitioners is studied. Information from various field reports was analyzed, a list of seven common pitfalls was derived, and the Design for the Developing World Canvas is introduced. This tool is similar to a Business Model Canvas, but it focuses on the product development process rather than the development of a business model. The Design for the Developing World Canvas can be used by design teams to facilitate discussions and make decisions that will allowthem to avoid the common pitfalls identified. A case study is then shared from a non-governmental organization called WHOlives.org about their experience with the Village Drill, a human-powered machine that digs boreholes for water wells. The case study outlines the development of the drill, a timeline of its implementation in 15 countries across three continents, specific values related to cashflows of the organization, and a conservative estimate of their impact in developing communities. A study of our original research conducting field studies using a technique called ethnography is then shared. This study was conducted in four countries on four continents and shows the impact of various conditions on the ability of the design team to collect information that is useful for making product development decisions. The conditions in this study include cultural familiarity, language fluency, gender and age of the respondent, information source type, use of prototypes, and others. The results can guide design teams as they make decisions about who to include on the design team, which projects to pursue, and how to conduct their own field studies. Lastly, conclusions related to design for the developing world are made based on the work presented and potential areas of future work are outlined.

Access to safe water supply--a major determinant of public health--is less than 50% in Madagascar, and access to piped, treated water remains out of reach financially for many in the urban and peri-urban areas where available. The Self-supply option of the Pitcher Pump has been meeting the need for household water in coastal areas of Madagascar since the early 1960s and has proven a sustainable option for many. These pumps make use of leaded components in the construction, however, which may pose a health risk for heavy metal intoxication and therefore cause the water to be unsafe for drinking and cooking. This study assesses the potential for lead (Pb) leaching from Pitcher Pump systems into water at levels of health concern. The objectives of this study are to assess Pb concentrations in water drawn from Pitcher Pumps, to determine the relationship between various factors and the Pb levels, to make a preliminary assessment of public health implications of Pb contamination, and to offer informed recommendations to reduce the likelihood of consuming contaminated water. A field study was undertaken to measure concentrations of dissolved Pb in water from Pitcher Pumps under recently flushed and first-draw pumping conditions at 18 households in the city of Tamatave, Madagascar. Variables potentially affecting Pb leaching were determined including pump age, depth to the well screen, pump manufacturer, season of sample collection, and basic water quality indicators. Sampling campaigns were conducted three times over the course of eight months. Time-release case studies were also carried out at two households to determine the time scale over which the Pb concentration in stationary water reaches equilibrium with the Pb-containing system components. Pilot studies of iron (Fe)-for-Pb substitution of select pump system components were carried out at the same two households to attribute the major contribution of Pb leaching to one set of parts and to assess one strategy for decreasing dissolved Pb concentrations. Finally, the Internal Exposure Uptake Biokinetic Model for Lead in Children (IEUBK Model) of the US Environmental Protection Agency (EPA) was employed to estimate realistic blood lead levels (BLLs) in children under five years of age, based on Pb concentrations measured in the water. Of the 18 pumps sampled, 15 produced at least one sample exceeding the World Health Organization (WHO) provisional guideline of 10 [um]g/L dissolved Pb in water. Specifically, 67% of all samples showed concentrations above 10 [um]g/L under first-draw pumping conditions. Flushing the pumps prior to use decreased the Pb levels significantly (p < 0.0001), with only 35% of samples exceeding the provisional guideline. Under flushed conditions, the median Pb concentration in pumped water was 9 [um]g/L, down from 13 [um]g/L at one hour of inactivity. No statistically significant correlations were observed between measured Pb concentrations and factors like the season of sample collection, pump age, manufacturer, or water quality indicators like pH or temperature. Under first-draw conditions, the concentration of Pb in water increased with increasing duration of pump inactivity, until equilibrium was reached with the leaded pump components. For two pumps, substitution of Fe valves for Pb greatly decreased Pb concentrations in the water, from 37-100 [um]g/L and 7-24 [um]g/L down to 3-4 [um]g/L and 2-8 [um]g/L, respectively. Model-predicted geometric mean BLLs in children range from about 2-8 [um]g/dL, in some instances exceeding the Centers for Disease Control and Prevention (CDC) guideline for an elevated BLL (5 [um]g/dL), depending on the exposure concentrations. This study finds that water provided by Pitcher Pump systems in Madagascar frequently exceeds the WHO provisional guideline value for safe consumption under first-draw conditions, and may do so even after flushing the pumps. The Pb concentrations measured in the field have the potential to elevate BLLs in children under five to levels implicated in serious health issues. Leaching of Pb into the water is therefore an issue of concern for users of the Pitcher Pump systems in Tamatave, and likely for other areas served by this technology. Flushing the pumps before water collection generally reduces Pb levels in the water. These results suggest that most of the Pb leaches from pure Pb check valve weights at the mouth of the pump, and consequently, a substitution of Fe weights on the valves greatly reduces Pb concentrations and the probability for exceeding the WHO provisional guideline. Relatively simple operational changes on the part of the pump manufacturers and the pump users might, therefore, help to ensure the continued sustainability of Pitcher Pumps in eastern Madagascar.

In the rural areas of Madagascar only 29% of the population has access to clean water and 10% has access to improved sanitation. It has been estimated that environmental risk factors, such as inadequate access to clean drinking water and proper sanitation, are responsible for 94% of the diarrheal disease burden. This study was focused on testing a point-of-use technology called the Tulip filter, which is a siphon ceramic candle filter impregnated with silver. The purpose is to assess its feasibility for implementation in rural regions of Madagascar through a laboratory study performed at the University of South Florida. The study tested the Tulip filters for turbidity, total coliform, and E. coli removal for various types of water. Each filter processed synthetic water classified as control (tap water, <1 >NTU), low turbidity (5-7 NTU), medium turbidity (25-35 NTU), or high turbidity (60-80 NTU). Approximately once every 100 L the filters processed pond water to test coliform removal. Furthermore, the pthesis size distribution was measured to analyze the effectiveness of filter to remove various pthesis sizes. Two of the seven Tulip filters tested had some quality control issues with the glue connecting the ceramic candle to the plastic cap and failed at 350 L. Of the functioning filters, the turbidity removal ranged from 93% to 98% with none of the 779 samples taken from 4 filters above the WHO recommended 5 NTU for drinking water. The log removal of total coliforms was about 3.90 to 4.16 and achieved an average of 1 CFU/100mL of E. coli in the filtered water. WHO guidelines consider water with 1-10 CFU/100 mL a "low risk" and all but one of the working filters had E. coli and total coliform concentrations within, or below, this range for all samples (n=20 for each filter). The filters also showed an average of 96% removal of pthesiss of all size ranging from 0.5 to 10 µm. This study finds that the Tulip filter is an appropriate of point-of-use technology that enables rural areas access to "low risk" water, at a low cost and with minimal maintenance. This study also reinforces the importance of adding silver or another biocide to ceramic filters because pthesiss of sizes up to 10 µm are able to pass through the filter. This is particularly a problem because pathogens can range from 0.01 µm to 100 µm.

There is an urgent need for wastewater treatment plants (WWTPs) to adapt to a rise in water and energy demands, prolonged periods of drought, climate variability, and resource scarcity. As population increases, minimizing the carbon and energy footprints of wastewater treatment, while properly managing nutrients is crucial to improving the sustainability WWTPs. Integrated resource recovery can mitigate the environmental impact of wastewater treatment systems; however, the mitigation potential depends on various factors such as treatment technology, resource recovery strategy, and system size. Amidst these challenges, this research seeks to investigate the environmental sustainability of wastewater treatment plants (WWTPs) integrating resource recovery (e.g., water reuse, energy recovery and nutrient recycling) in different contexts (developing versus developed world) and at different scales (household, community, and city). The over-arching hypothesis guiding this research is that: Context and scale impact the environmental sustainability of WWTPs integrated with resource recovery. Three major research tasks were designed to contribute to a greater understanding of the environmental sustainability of resource recovery integrated with wastewater treatment systems. They include a framework development task (Chapter 2), scale assessment task (Chapter 3), and context assessment task (Chapter 4). The framework development task includes a critical review of literature and models used to design a framework to assess the environmental sustainability of wastewater treatment and integrated resource recovery strategies. Most studies used life cycle assessment (LCA) to assess these systems. LCA is a quantitative tool, which estimates the environmental impact of a system over its lifetime. Based on this review, a comprehensive system boundary was selected to assess the life cycle impacts of collection, treatment, and distribution over the construction and operation and maintenance life stages. Additionally, resource recovery offsets associated with water reuse, energy recovery, and nutrient recycling are considered. The framework’s life cycle inventory includes material production and delivery, equipment operation, energy production, sludge disposal, direct greenhouse gas (GHG) emissions, and nutrients discharged to the environment. Process-based LCA is used to evaluate major environmental impact categories, including global impacts (e.g., carbon footprint, embodied energy) and local impacts (e.g., eutrophication potential). This is followed by an interpretation of results using sensitivity or uncertainty analysis. The scale assessment task investigates how scale impacts the environmental sustainability of three wastewater treatment systems integrated with resource recovery in a U.S. context. Household, community, and city scale systems using mechanized technologies applicable to a developed world setting were investigated. The household system was found to have the highest environmental impacts due high electricity usage for treatment and distribution, methane emissions from the septic tank, and high nutrient discharges. Consequently, the life cycle impacts of passive nutrient reduction systems with low energy usage at the household level merit further investigation. The community scale system highlights trade-offs between global impacts (e.g., embodied energy and carbon footprint) and local impacts (e.g., eutrophication potential) where low nutrient pollution can be achieved at the cost of a high embodied energy and carbon footprint. The city scale system had the lowest global impacts due to economies of scale and the benefits of integrating all three forms of resource recovery: Energy recovery, water reuse, and nutrient recycling. Integrating these three strategies at the city scale led to a 49% energy offset, which mitigates the carbon footprint associated with water reuse. The context assessment task investigates how context impacts the environmental sustainability of selected community scale systems in both Bolivia and the United States. In this task, rural developing world and urban developed world wastewater management solutions with resource recovery strategies are compared. Less mechanized treatment technologies used in rural Bolivia were found to have a lower carbon footprint and embodied energy than highly mechanized technologies used in urban United States. However, the U.S. community system had a lower eutrophication potential than the Bolivia systems, highlighting trade-offs between global and local impacts. Furthermore, collection and direct methane emissions had more important energy and carbon implications in Bolivia, whereas treatment electricity was dominant for the U.S. community system. Water reuse offsets of embodied energy and carbon footprint were higher for the U.S community system, because high quality potable water is replaced instead of river water. In contrast, water reuse offsets of eutrophication potential were high for the Bolivia systems, highlighting the importance of matching treatment level to end-use application. One of the Bolivia systems benefits from the integration of water, energy, and nutrient recovery leading to beneficial offsets of both global and local impacts. This research can potentially lead to transformative thinking on the appropriate scale of WWTPs with integrated resource recovery, while highlighting that context lead to changes in the dominant contributors to environmental impact, appropriate technologies, and mitigation strategies.

As building transcribed speech corpora for under–resourced languages plays a pivotal role in developing automatic speech recognition (ASR) technologies for such languages, a key step in developing these technologies is the effective collection of ASR data, consisting of transcribed audio and associated meta data. The problem is that no suitable tool currently exists for effectively collecting ASR data for such languages. The specific context and requirements for effectively collecting ASR data for underresourced languages, render all currently known solutions unsuitable for such a task. Such requirements include portability, Internet independence and an open–source code–base. This work documents the development of such a tool, called Woefzela, from the determination of the requirements necessary for effective data collection in this context, to the verification and validation of its functionality. The study demonstrates the effectiveness of using smartphones without any Internet connectivity for ASR data collection for under–resourced languages. It introduces a semireal– time quality control philosophy which increases the amount of usable ASR data collected from speakers. Woefzela was developed for the Android Operating System, and is freely available for use on Android smartphones, with its source code also being made available. A total of more than 790 hours of ASR data for the eleven official languages of South Africa have been successfully collected with Woefzela. As part of this study a benchmark for the performance of a new National Centre for Human Language Technology (NCHLT) English corpus was established. / Thesis (M.Ing. (Electrical Engineering))--North-West University, Potchefstroom Campus, 2012.

As building transcribed speech corpora for under–resourced languages plays a pivotal role in developing automatic speech recognition (ASR) technologies for such languages, a key step in developing these technologies is the effective collection of ASR data, consisting of transcribed audio and associated meta data. The problem is that no suitable tool currently exists for effectively collecting ASR data for such languages. The specific context and requirements for effectively collecting ASR data for underresourced languages, render all currently known solutions unsuitable for such a task. Such requirements include portability, Internet independence and an open–source code–base. This work documents the development of such a tool, called Woefzela, from the determination of the requirements necessary for effective data collection in this context, to the verification and validation of its functionality. The study demonstrates the effectiveness of using smartphones without any Internet connectivity for ASR data collection for under–resourced languages. It introduces a semireal– time quality control philosophy which increases the amount of usable ASR data collected from speakers. Woefzela was developed for the Android Operating System, and is freely available for use on Android smartphones, with its source code also being made available. A total of more than 790 hours of ASR data for the eleven official languages of South Africa have been successfully collected with Woefzela. As part of this study a benchmark for the performance of a new National Centre for Human Language Technology (NCHLT) English corpus was established. / Thesis (M.Ing. (Electrical Engineering))--North-West University, Potchefstroom Campus, 2012.

Evaluating the social impacts of engineered products, or effects products have on the daily lives of individuals, is critical to ensuring that products are having positive impacts while avoiding negative impacts and to learning how to improve product designs for a more positive social impact. One approach to quantifying a product's social impact is to use social impact indicators that combine user data in a meaningful way to give insight into the current social condition of an individual or population. However, determining social impact indicators relative to engineered products and individuals in developing countries can be difficult when there is a large geographical distance between the users of a product and those designing them and since many conventional methods of user data collection require direct human interaction with or observation of users of a product. This means user data may only be collected at a single instance in time and infrequently due to the large human resources and cost associated with obtaining them. Alternatively, internet-connected, remote data collection devices paired with deep learning models can provide an effective way to use in-situ sensors to collect data required to calculate social impact indicators remotely, continuously, and less expensively than other methods. This research has identified key principles that can enable researchers, designers, and practitioners to avoid pitfalls and challenges that could be encountered at various stages of the process of using remote sensor devices and deep learning to evaluate social impact indicators of products in developing countries. Chapter 2 introduces a framework that outlines how low-fidelity user data often obtainable using remote sensors or digital technology can be collected and correlated with high-fidelity, infrequently collected user data to enable continuous, remote monitoring of engineered products using deep learning. An example application of this framework demonstrates how it can be used to collect data for calculating several social impact indicators related to water hand pumps in Uganda during a 4 day study. Chapter 3 builds on the framework established in Chapter 2 to provide principles for enabling insights when engaging in long-term deployment of using in-situ sensors and deep learning to monitor the social impact indicators of products in developing countries. These principles were identified while using this approach to monitor the social impact indicators of a water hand pump in Uganda over a 5 month data collection period. Chapter 4 provides principles for successfully developing remote data collection devices used to collect user data for determining social impact indicators. A design tool called the "Social Impact Sensor Canvas" is provided to guide device development along with a discussion of the key decisions, critical questions, common options, and considerations that should be addressed during each stage of device development to increase the likelihood of success. Lastly, Chapter 5 discusses the conclusions made possible through this research along with proposed future work.

The concept of strategy has advanced significantly from when the emphasis fell on comprehensive, systematic and rational planning. However, many of the assumptions that were embedded in traditional strategy models were deemed to be inadequate and outdated as we approached a new competitive milieu (Maritz, 2010). Strategic Management is still a comparatively young field and the existing toolbox of concepts and techniques remains woefully inadequate (Grant, 2010). This reality should force a re-examination of the traditional strategy paradigms (Maritz, 2010). The literature review has confirmed the observations by Maritz (2010) and Grant (2010) that indeed current strategic management paradigms or approaches were inadequate for unique business environments obtaining in a developing country in Africa, such as Zimbabwe. The motivation for this research, therefore, was to identify and recommend strategic management approaches or paradigms applicable to banks operating in a turbulent and chaotic environment. Based on an extensive literature review, in-depth interviews were conducted with six commercial banks (three that survived the turbulence and three that failed) during the period under review. The study established that the banks that survived the turbulence had a different strategic management approach from the traditional designed ones. It was also noted in this study that in turbulent environments, strategy-making is birthed through an emergent process. When events are moving at an unprecedented speed, as was happening in Zimbabwe, the time intervals between obtaining information, analysing information, taking decisions and implementing those decisions need to be tightly compressed. The researcher coined this process Strategic Intensity (SI). On the other hand, diversification as a strategy was found to be very risky for businesses that did not have a strong foundation and that were lacking in the appreciation of the risk complexion of the businesses into which they were diversifying. This research makes a significant contribution by identifying and recommending Strategic Management approaches applicable to businesses operating in a turbulent and chaotic environment in developing markets such as Zimbabwe. Furthermore, this research also contributes towards the current debate in academic literature amongst practitioners of strategy, about how strategy is really made in organisations (Maritz, 2010). The debate centres around two opposing views: one associated with strategy-making as a formal, deliberate plan, and the other associated with strategies as evolving, ever-changing sets of outcomes that are eventually realised. Finally, the researcher proposes that further studies be conducted at the end of this study. / Business Management / DBL

The concept of strategy has advanced significantly from when the emphasis fell on comprehensive, systematic and rational planning. However, many of the assumptions that were embedded in traditional strategy models were deemed to be inadequate and outdated as we approached a new competitive milieu (Maritz, 2010). Strategic Management is still a comparatively young field and the existing toolbox of concepts and techniques remains woefully inadequate (Grant, 2010). This reality should force a re-examination of the traditional strategy paradigms (Maritz, 2010). The literature review has confirmed the observations by Maritz (2010) and Grant (2010) that indeed current strategic management paradigms or approaches were inadequate for unique business environments obtaining in a developing country in Africa, such as Zimbabwe. The motivation for this research, therefore, was to identify and recommend strategic management approaches or paradigms applicable to banks operating in a turbulent and chaotic environment. Based on an extensive literature review, in-depth interviews were conducted with six commercial banks (three that survived the turbulence and three that failed) during the period under review. The study established that the banks that survived the turbulence had a different strategic management approach from the traditional designed ones. It was also noted in this study that in turbulent environments, strategy-making is birthed through an emergent process. When events are moving at an unprecedented speed, as was happening in Zimbabwe, the time intervals between obtaining information, analysing information, taking decisions and implementing those decisions need to be tightly compressed. The researcher coined this process Strategic Intensity (SI). On the other hand, diversification as a strategy was found to be very risky for businesses that did not have a strong foundation and that were lacking in the appreciation of the risk complexion of the businesses into which they were diversifying. This research makes a significant contribution by identifying and recommending Strategic Management approaches applicable to businesses operating in a turbulent and chaotic environment in developing markets such as Zimbabwe. Furthermore, this research also contributes towards the current debate in academic literature amongst practitioners of strategy, about how strategy is really made in organisations (Maritz, 2010). The debate centres around two opposing views: one associated with strategy-making as a formal, deliberate plan, and the other associated with strategies as evolving, ever-changing sets of outcomes that are eventually realised. Finally, the researcher proposes that further studies be conducted at the end of this study. / Business Management / DBL

L’émergence de la Chine dans le système international post-guerre froide pose un défi pour la position hégémonique des États-Unis et l’ordre mondial libéral. Lorsqu’ils tentent d’expliquer ce défi, les spécialistes tendent à se concentrer uniquement soit sur le hard power chinois (en particulier, sa puissance militaire) soit sur son soft power (l’attrait de sa culture et idéologie). Cette thèse développe un cadre d’analyse alternatif inspiré de la sociologie de Pierre Bourdieu, articulé autour de la notion de pouvoir symbolique. Elle conçoit la politique internationale en termes d’une lutte symbolique (entre, par exemple, une orthodoxie et une hétérodoxie) dont l’issue est déterminée par au moins trois facteurs cruciaux : contexte, capital et lieux communs. Ce cadre est appliqué à l’analyse du nouveau rôle de la Chine dans le monde depuis la fin de la guerre froide, lequel est indiscutablement l’un des développements les plus remarquables des relations internationales des temps modernes. La thèse démontre que la Chine ne défie pas l’hégémonie des États-Unis et l’ordre mondial libéral au sens conventionnel de la puissance matérielle ou de l’idéologie, mais plutôt au niveau symbolique. La thèse soutient que la conjonction des trois facteurs susmentionnés a été nécessaire à l’influence mondiale de la Chine : (1) la crise de légitimation des États-Unis (sur les plan économique, politique et idéologique), couplée à l’extraordinaire ascension de nouvelles puissances dans le système international comme la Chine, ont créé un contexte historique favorable ou « condition de possibilité »; (2) l’énorme capital symbolique accumulé par la Chine, en raison non seulement de son nouveau statut de grande puissance, mais aussi de son approche pragmatique des questions nationales et internationales, en a fait une source d’inspiration convoitée mondialement ; (3) la mobilisation stratégique par la Chine de son capital symbolique, sous la forme d’un ensemble de lieux communs ‘rhétoriques’, a grandement contribué à légitimer sa puissance, en particulier aux yeux des élites dirigeantes dans le monde en développement, dissimulant ainsi le caractère asymétrique et arbitraire de ses relations. Ensemble, ces trois éléments –contexte, capital, lieux communs– expliquent le pouvoir symbolique de la Chine, c’est-à-dire la perception selon laquelle, contrairement aux États-Unis, elle propose des réponses pertinentes et cohérentes aux problèmes d’organisation sociale, économique et politique de ce monde. L’ascension de la Chine remet ainsi en question le « méta-capital » des États-Unis, c’est-à-dire son monopole sur la production du capital économique, social, culturel et symbolique. L’accent mis sur cette dimension symbolique de la lutte pour définir et imposer la « vision légitime du monde social et ses divisions » révèle une rupture avec la pratique conventionnelle de la politique des grandes puissances, au profit d’une transformation pacifique du système international et d’une diplomatie symbolique. Cet accent sur le pouvoir symbolique ouvre des avenues prometteuses pour l’étude du changement et des sources d’autorité sur la scène politique mondiale, traditionnellement définie comme « anarchique ». / China’s rise within the international system in the post-Cold War era challenges the hegemonic position of the United States and the Western liberal order. In trying to explain this challenge, scholars tend to either focus on Chinese hard power (in particular, its military power) or on its soft power (the attractiveness of its culture and ideology). This thesis develops an alternative Bourdieu-inspired framework addressing symbolic power. It conceptualizes international politics in terms of a symbolic struggle (such as that between orthodoxy and heterodoxy) whose outcome is determined by at least three crucial factors: context, capital and commonplaces. The framework is applied to the analysis of China’s new world role, which is arguably one of the most remarkable developments in modern international relations. The thesis shows that China does not challenge U.S. hegemonic position and the Western liberal order in the conventional sense of material power or ideology, but rather at the symbolic level. The thesis argues that the combination of the three above-mentioned factors has been necessary to China’s worldwide influence : (1) the legitimation crisis of the United States (economically, politically and ideologically), paired with the extraordinary rise of new illiberal powers on the world scene such as China, created a favourable historical context or “condition of possibility”; (2) the huge amount of symbolic capital accumulated by China, not only because of its new status as a great power, but also because of the success of its pragmatic approach to national and international issues, made it become a source of inspiration for countries across the world; (3) the strategic mobilization by China of its symbolic capital, in the form of ‘rhetorical’ commonplaces, greatly contributed to legitimize its power, especially in the eyes of ruling elites in the developing world, thereby dissimulating the asymmetric and arbitrary nature of the Chinese power and relations. Together, these three components -context, capital, and commonplaces- explain the emergence of China as a symbolic power, i.e. the perception that, unlike the United States, China now has the authority to speak the truth and to define causes of and remedies for certain problems and crises. China’s rise challenges the Unites States’ ‘meta-capital’, that is, its monopoly on the production of economic, social, cultural, and symbolic capital. The focus on this symbolic dimension as a ‘weapon’ in the struggle to define and impose the “legitimate vision of the social world and its divisions” reveals a rupture in the conventional practice of great powers politics, pointing to a peaceful transformation of the international system and symbolic diplomacy. It shows that a focus on symbolic power opens promising avenues for the study of change and sources of authority in world politics, traditionally defined as “anarchic”.