scholarly journals Expanding the Level of Technological Readiness for a Low-Cost Vertical Hydroponic System

Inventions ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 68
Author(s):  
Juan D. Borrero
Keyword(s):  
Rural Areas ◽  
Food Systems ◽  
Agricultural Development ◽  
Food Sovereignty ◽  
Low Cost ◽  
Agricultural Practices ◽  
Research Literature ◽  
Technological Readiness ◽  
Readiness Level ◽  
And Performance

Climate and social changes are deeply affecting current agro-food systems. Unsustainable agricultural practices and the low profitability of small farmers are challenging the agricultural development of rural areas. This study aims to develop a novel, modular and low-cost vertical hydroponic farm system through reviews of the patented literature, research literature and variants of commercial products. After a detailed conceptualization process, a prototype was fabricated and tested at my university to validate its technology readiness level (TRL). The outcomes supported the usability and performance of the present utility model but highlighted several changes that are necessary before it can pass to the next TRL. This study shows that the prototype has the potential to not only solve food sovereignty but also to benefit society by advancing the innovations in food production and improving quality of life.

scholarly journals Agriculture and food systems in sub-Saharan Africa in a 4 ° C+ world

2011 ◽  
Vol 369 (1934) ◽  
pp. 117-136 ◽  
Author(s):  
Philip K. Thornton ◽  
Peter G. Jones ◽  
Polly J. Ericksen ◽  
Andrew J. Challinor
Keyword(s):  
Food Security ◽  
Food Systems ◽  
Agricultural Development ◽  
Agricultural Practices ◽  
Commodity Price ◽  
Adaptation Strategies ◽  
Policy Support ◽  
Sub Saharan Africa ◽  
Sub Saharan ◽  
Agriculture And Food

Agricultural development in sub-Saharan Africa faces daunting challenges, which climate change and increasing climate variability will compound in vulnerable areas. The impacts of a changing climate on agricultural production in a world that warms by 4 ° C or more are likely to be severe in places. The livelihoods of many croppers and livestock keepers in Africa are associated with diversity of options. The changes in crop and livestock production that are likely to result in a 4 ° C+ world will diminish the options available to most smallholders. In such a world, current crop and livestock varieties and agricultural practices will often be inadequate, and food security will be more difficult to achieve because of commodity price increases and local production shortfalls. While adaptation strategies exist, considerable institutional and policy support will be needed to implement them successfully on the scale required. Even in the 2 ° C+ world that appears inevitable, planning for and implementing successful adaptation strategies are critical if agricultural growth in the region is to occur, food security be achieved and household livelihoods be enhanced. As part of this effort, better understanding of the critical thresholds in global and African food systems requires urgent research.

scholarly journals Stakeholder and Constraint-Driven Innovation of a Novel, Lever-Propelled, All-Terrain Wheelchair

2013 ◽  
Author(s):  
Amos G. Winter
Keyword(s):  
Rural Areas ◽  
Developing World ◽  
Angular Displacement ◽  
Low Cost ◽  
Disruptive Innovation ◽  
Design Tool ◽  
Key Innovation ◽  
Propulsion Force ◽  
The Rich ◽  
And Performance

The Leveraged Freedom Chair (LFC) is a low-cost, all-terrain, lever-propelled wheelchair designed primarily for use in developing countries. LFC technology was conceived because 70 percent of wheelchair users in these markets live in rural areas and no currently available mobility aid enables them to travel long distances on rough terrain and maneuver in tight, indoor confines. Because developing world markets impose constraints on cost, durability, and performance, a novel solution was required to satisfy stakeholder requirements. The key innovation behind the LFC is its single speed, variable mechanical advantage lever drivetrain. The user effectively changes gear by shifting his hands along the levers; grasping near the ends increases torque, while grasping near the pivots enables a larger angular displacement with every stroke, which increases speed. The drivetrain is made from low-cost bicycle parts found throughout the developing world, which enables the LFC to be sold for $200 and be repairable anywhere. During three user trials in East Africa, Guatemala, and India, stakeholder feedback was used to refine the chair between trials, resulting in a device 9.1 kg (20 lbs) lighter, 8.9 cm (3.5 in) narrower, and with a center of gravity 12.7 cm (5 in) lower than the first iteration. Survey data substantiated increases in performance after successive iterations. Quantitative biomechanical performance data were also measured during the Guatemala and India trials, which showed the LFC to be 76 percent faster and 41 percent more efficient during a common daily commute, and able to produce 53 percent higher peak propulsion force compared to conventional, pushrim-propelled wheelchairs. The LFC offers comparable performance at less than one-twentieth the cost of off road wheelchairs available in the rich world. Stakeholder feedback and the highly-constrained environment for which the LFC was created drove the technology towards a novel, innovative solution that offers a competitive advantage in both developing and developed markets. The paper concludes with a description of how the LFC is a “constraint-driven innovation.” This idea ties together the theories of “disruptive innovation” and “reverse innovation,” and may be used as a design tool for engineers striving to create technologies that have global impact.

scholarly journals Design and Performance Analysis of Rural Aquaculture Ponds using IoT

2019 ◽  
Vol 8 (2) ◽  
pp. 3078-3081
Keyword(s):  
Rural Areas ◽  
Network Performance ◽  
Low Cost ◽  
Fish Growth ◽  
Battery Life ◽  
Fish Ponds ◽  
Water Parameters ◽  
Proposed Model ◽  
And Performance ◽  
Rural Aquaculture

Rural aquaculture is mostly based on open pond system. People in rural areas depend on aquaculture not only for food but also for livelihood. These are unmanaged fish ponds and deprived of any technological touches. To increase the livelihood, establishment of managed ponds and use of low cost IoT technology for monitoring fishponds is an important issue. By monitoring water parameters like PH, temperature, Turbidity fish growth can be increased. In this paper we have proposed a multiple fish pond design controlled by single center and wire and wireless mode of data collection. The proposed model is simulated using NetSim to generate network performance matrices. To achieve a prolonged battery life, concept of energy harvesting at sensor node level is introduced in the simulation study

scholarly journals Ultra-Processed Foods and Food System Sustainability: What Are the Links?

2020 ◽  
Vol 12 (15) ◽  
pp. 6280 ◽  
Author(s):  
Anthony Fardet ◽  
Edmond Rock
Keyword(s):  
Dairy Products ◽  
Food Systems ◽  
Food System ◽  
Low Cost ◽  
Agricultural Practices ◽  
Processed Foods ◽  
System Sustainability ◽  
Culinary Traditions ◽  
New Hypothesis ◽  
Global Food

Global food systems are no longer sustainable for health, the environment, animal biodiversity and wellbeing, culinary traditions, socioeconomics, or small farmers. The increasing massive consumption of animal foods has been identified as a major determinant of unsustainability. However, today, the consumption of ultra-processed foods (UPFs) is also questioned. The main objective of this review is therefore to check the validity of this new hypothesis. We first identified the main ingredients/additives present in UPFs and the agricultural practices involved in their provision to agro-industrials. Overall, UPF production is analysed regarding its impacts on the environment, biodiversity, animal wellbeing, and cultural and socio-economic dimensions. Our main conclusion is that UPFs are associated with intensive agriculture/livestock and threaten all dimensions of food system sustainability due to the combination of low-cost ingredients at purchase and increased consumption worldwide. However, low-animal-calorie UPFs do not produce the highest greenhouse gas emissions (GHGEs) compared to conventional meat and dairy products. In addition, only reducing energy dense UPF intake, without substitution, might substantially reduce GHGEs. Therefore, significant improvement in food system sustainability requires urgently encouraging limiting UPF consumption to the benefit of mildly processed foods, preferably seasonal, organic, and local products.

The Role of Research and Innovation in the Transformation of Agri-Food Systems

2018 ◽  
Vol 12 (2) ◽  
pp. 60-63
Author(s):  
Mariana Sandu ◽  
Stefan Mantea
Keyword(s):  
Technological Progress ◽  
Food Systems ◽  
Food System ◽  
Agricultural Research ◽  
Research And Innovation ◽  
And Performance ◽  
The Impact ◽  
Determinant Factor ◽  
Rapid Transformation

Abstract Agri-food systems include branching ramifications, which connect in the upstream the input suppliers with farmers, and downstream farmers, processors, retailers and consumers. In the last decades, at the level of the regions, food systems have undergone rapid transformation as a result of technological progress. The paper analyzes the changes made to the structure, behavior and performance of the agri-food system and the impact on farmers and consumers. Also, the role of agricultural research as a determinant factor of transformation of agri-food system is analyzed. The research objective is to develop technologies that cover the entire food chain (from farm to fork) and meet the specific requirements of consumers (from fork to farm) through scientific solutions in line with the principles of sustainable agriculture and ensuring the safety and food safety of the population.

Fulfilling the Right to Food for South Africa: Justice, Security, Sovereignty and the Politics of Malnutrition

2020 ◽  
Vol 11 (3) ◽  
pp. 112-152
Author(s):  
Busiso Helard Moyo ◽  
Anne Marie Thompson Thow
Keyword(s):  
South Africa ◽  
Food Systems ◽  
Food System ◽  
Food Sovereignty ◽  
Food Justice ◽  
System Transformation ◽  
Right To Food ◽  
Economic Rights ◽  
The Individual ◽  
The Right

Despite South Africa’s celebrated constitutional commitments that have expanded and deepened South Africa’s commitment to realise socio-economic rights, limited progress in implementing right to food policies stands to compromise the country’s developmental path. If not a deliberate policy choice, the persistence of hunger, food insecurity and malnutrition in all its forms is a deep policy failure.  Food system transformation in South Africa requires addressing wider issues of who controls the food supply, thus influencing the food chain and the food choices of the individual and communities. This paper examines three global rights-based paradigms – ‘food justice’, ‘food security’ and ‘food sovereignty’ – that inform activism on the right to food globally and their relevance to food system change in South Africa; for both fulfilling the right to food and addressing all forms of malnutrition. We conclude that the emerging concept of food sovereignty has important yet largely unexplored possibilities for democratically managing food systems for better health outcomes.

Programmable Integrated Photonics

2020 ◽  
Author(s):  
José Capmany ◽  
Daniel Pérez
Keyword(s):  
Integrated Circuit ◽  
Performance Monitoring ◽  
Low Cost ◽  
Limiting Factors ◽  
External Control ◽  
Integrated Photonics ◽  
New Paradigm ◽  
Photonic Integrated Circuit ◽  
And Performance ◽  
Application Fields

Programmable Integrated Photonics (PIP) is a new paradigm that aims at designing common integrated optical hardware configurations, which by suitable programming can implement a variety of functionalities that, in turn, can be exploited as basic operations in many application fields. Programmability enables by means of external control signals both chip reconfiguration for multifunction operation as well as chip stabilization against non-ideal operation due to fluctuations in environmental conditions and fabrication errors. Programming also allows activating parts of the chip, which are not essential for the implementation of a given functionality but can be of help in reducing noise levels through the diversion of undesired reflections. After some years where the Application Specific Photonic Integrated Circuit (ASPIC) paradigm has completely dominated the field of integrated optics, there is an increasing interest in PIP justified by the surge of a number of emerging applications that are and will be calling for true flexibility, reconfigurability as well as low-cost, compact and low-power consuming devices. This book aims to provide a comprehensive introduction to this emergent field covering aspects that range from the basic aspects of technologies and building photonic component blocks to the design alternatives and principles of complex programmable photonics circuits, their limiting factors, techniques for characterization and performance monitoring/control and their salient applications both in the classical as well as in the quantum information fields. The book concentrates and focuses mainly on the distinctive features of programmable photonics as compared to more traditional ASPIC approaches.

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