Foroba Yelen: Portable Solar Lighting and Sustainable Strategies for Remote Malian Villages

‘Foroba Yelen’ is a conference paper recording the case study led by Hall of a design enterprise project in Mali that investigated how designers can co-design and develop portable, sustainable solar lighting for remote off-grid Malian villages and how this can ultimately assist in an overall national-level strategy for slowing the rural urban migration patterns of West Africa. The project had a positive impact on the local community by enabling sustainable local lighting that helped maintain cultural practices, encouraged enterprise and facilitated education. The lights would be rented out by villagers and profits used to construct new lights designed to use locally sourced materials, construction techniques and components. The research builds on existing expertise of cross-cultural collaboration by the lead author (Hall 2009; Hall 2010; Hall 2012; Hall 2013), and describes the technical and cultural challenges faced by designers working in this challenging context – in particular, the challenge of whether to use imported or locally sourced technologies, locating suitable making processes and issues of deploying co-design methods across cultures. Impact is demonstrated by improvements in the social life of villages through public lighting as part of a strategy for slowing the rural–urban migration patterns and helping to maintain food production in the countryside. New knowledge, including methods for sustainable development, communication by remote design teams and design pedagogy, is presented in practice-related activities by designers in international collaborations. The range of project communications was mapped and diagrams generated to identify the most successful remote communication platforms. Following the project completion, the work was exhibited at the Royal College of Art (2011) and featured in three articles in Lighting Design (2012), Axis (2012) and New Design (2012). The project was funded by the eLand Foundation in Switzerland, Nakumatt Holdings in Kenya and Philips Lighting in Holland

Evaluating color texture descriptors under large variations of controlled lighting conditions

The recognition of color texture under varying lighting conditions is still an open issue. Several features have been proposed for this purpose, ranging from traditional statistical descriptors to features extracted with neural networks. Still, it is not completely clear under what circumstances a feature performs better than the others. In this paper we report an extensive comparison of old and new texture features, with and without a color normalization step, with a particular focus on how they are affected by small and large variation in the lighting conditions. The evaluation is performed on a new texture database including 68 samples of raw food acquired under 46 conditions that present single and combined variations of light color, direction and intensity. The database allows to systematically investigate the robustness of texture descriptors across a large range of variations of imaging conditions.Comment: Submitted to the Journal of the Optical Society of America

LED Systems Target Plant Growth

To help develop technologies for growing edible biomass (food crops) in space, Kennedy Space Center partnered with Orbital Technologies Corporation (ORBITEC), of Madison, Wisconsin, through the Small Business Innovation Research (SBIR) program. One result of this research was the High Efficiency Lighting with Integrated Adaptive Control (HELIAC) system, components of which have been incorporated into a variety of agricultural greenhouse and consumer aquarium lighting features. The new lighting systems can be adapted to a specific plant species during a specific growth stage, allowing maximum efficiency in light absorption by all available photosynthetic tissues

Food Acceptability as Affected by Fluorescent Lighting

This research was conducted to investigate food acceptability as affected by warm and cool fluorescent lights. Five food items were judged by college students on a cafeteria hot food line in Presidential Court Food Service at The University of Tennessee Knoxville. Choices of roast beef, hamburgers, green beans, mashed potatoes, and mixed vegetables held under cool and warm fluorescent lights were recorded. All five foods lighted by a warm fluorescent tube were chosen in preference to the same foods lighted under a cool fluorescent light. The food preferences were significant at the 5% level between the two fluorescent lights when roast beef, hamburgers, mashed potatoes, and green beans were judged as determined by a chi square analysis. Constructive criticism was offered by the students. Numerous negative remarks were made about all the foods under the cool fluorescent light source. This light source seemed to cast a green hue on all foods, especially meats. Others felt the roast beef and mixed vegetables appeared artificial under the cool fluorescence. Many complimentary comments were made about the foods under the warm fluorescent light source. From the results of this study, it was concluded that food items appear different under a warm fluorescent tube as compared to being lighted by a cool fluorescent source. This research indicates that it could be possible to increase sales of prepared food served in volume by using warm fluorescent lights in serving and dining areas

Pest management and food production: looking to the future

In their comprehensive paper, Montague Yudelman, Annu Ratta, and David Nygaard examine the key issues with regard to pest management and food production over the coming decades. They draw attention to the lack of adequate information on the magnitude and impact of pest losses; with out such information, policy makers are handicapped when devising strategies for meeting food needs. The authors address both chemical and nonchemical approaches to pest management, high lighting the importance of biotechnology. There is growing public sentiment against biotechnology but little appreciation as yet of its contributions to alleviating hunger by, among other things, controlling pest losses. The authors also adress the important subject of the roles of different actors in pest management, most notably the private sector. A world with out pests is unrealistic and probably undesirable. However, a world with severely reduced losses of food production to pests is achievable by 2020. This paper shows us how.Food crops Diseases and pests Control., Pests Integrated control.,

Poultry farm and processing plant lighting (1993)

Poultry businesses and poultry industry specialists have known for years the value of specialized controlled lighting for stimulating bird growth and egg production. But the very low lighting level (usually 2 foot-candles or less) required for better egg production has often led to low worker productivity. Houses are windowless to control light, summer heat, winter heat loss and year-round ventilation. Well-designed artificial lighting systems allow workers to perform tasks easily, efficiently and safely. This is also true for related agri-industry processing plants often located in rural areas close to producers. Great emphasis placed on consumer protection and satisfaction brings strict sanitary practices in food processing facilities. Proper illumination helps achieve these objectives

Law as a Tool to Facilitate Healthier Lifestyles and Prevent Obesity

Public health agencies face considerable challenges trying to prevent overweight and obesity in society, primarily because a person\u27s own behavior is often the root cause of the disease. Individuals make personal choices about their diet, exercise, and lifestyle, so disease is often thought of as a matter of personal, not governmental, responsibility. This Commentary shows how law can be used as a tool to prevent overweight and obesity (see Table). The tools discussed in this article include: - Disclosure - e.g., labels and consumer information - Tort liability - e.g., inadequate disclosure of risks, misleading advertisements, and targeting children - Surveillance - e.g., reporting of glycosylated hemoglobin for diabetes management - Targeting children and adolescents - e.g., restricting food advertising during children\u27s programs; counter advertising to promote good nutrition and physical activity; limiting the use of cartoon characters; and restricting web-based games and promotions - Taxation of unhealthy food - e.g., junk food, snack, or Twinkie tax provides disincentive for purchasing calorie-dense, nutrient-poor foods; tax revenue could also be used to promote healthy nutrition - School policies - e.g., require schools to adhere to dietary guidelines and portion size; increase opportunities for nutrition education and physical activities - Built Environment - e.g., limit fast food restaurants, build recreational parks and bike paths, expand mass transportation, and provide lighting and playgrounds in housing developments - Food Prohibitions - e.g., ban trans fat from restaurants Despite the undoubted political risks, should public health agencies push for strong measures to control obesity, perhaps even banning hazardous foods? The justification lies with the epidemic rates of overweight and obesity, the preventable morbidity and mortality, and the stark health disparities based on race and socioeconomic status. Although the public dislikes paternalism, it is at least worth considering whether such an approach is ever justified to regulate harms that are apparently self-imposed, but which are deeply socially embedded and pervasively harmful to the public

Potential for Solar Energy in Food Manufacturing, Distribution and Retail

The overall aim of the study was to assess the potential for increasing the use of solar energy in the food sector. For comparative purposes the study also included an assessment of the benefits that could arise from the use of other renewable energy sources, and the potential for more effective use of energy in food retail and distribution. Specific objectives were to: i) establish the current state of the art in relevant available solar technology; ii) identify the barriers for the adoption of solar technology; iii) assess the potential for solar energy capture; iv) appraise the potential of alternative relevant technologies for providing renewable energy; v) assess the benefits from energy saving technologies; vi) compare the alternative strategies for the next 5-10 years and vii) Consider the merits of specific research programmes on solar energy and energy conservation in the food sector. To obtain the views of the main stakeholders in the relevant food and energy sectors on the opportunities and barriers to the adoption of solar energy and other renewable energy technologies by the food industry, personal interviews and structured questionnaires tailored to the main stakeholders (supermarkets, consultants for supermarket design; energy and equipment suppliers) were used. The main findings from the questionnaires and interviews are: - Key personnel in supermarkets and engineers involved in the design of supermarkets are aware of the potential contribution of renewable energy technologies and other energy conservation measures to energy conservation and environmental impact reduction in the food industry. A number of supermarket chains have implemented such technologies at pilot scale to gain operating experience, and more importantly, for marketing reasons, to gain competitive advantage through a green image. - From installations to date in the UK the most notable are a 600 kW wind turbine at a Sainsbury's distribution centre in East Kilbride and a 60 kWp photovoltaic array at a Tesco store in Swansea. - The main barrier to the application of renewable energy technologies in the food sector is the capital cost. Even though significant progress has been made towards the improvement of the energy conversion efficiencies of photovoltaic technologies (PVs) and reduction in their cost, payback periods are still far too long, for them to become attractive to the food industry. - Wind energy can be more attractive than PVs in areas of high wind speed. Apart from relatively high cost, the main barrier to the wide application of wind turbines for local power generation is planning restrictions. This technology is more attractive for application in food distribution centres that are normally located outside build-up areas where planning restrictions can be less severe than in urban areas. In these applications it is likely that preference will be for large wind turbines of more than 1.0 MW power generation capacity as the cost of generation per unit power reduces with the size of the turbine