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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Agriculture and human values 16 (1999), S. 141-150 
    ISSN: 1572-8366
    Keywords: Community food security ; Hunger ; Food security ; Food systems ; Planning ; Theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Practitioners and advocates of community food security (CFS) envision food systems that are decentralized, environmentally-sound over a long time-frame, supportive of collective rather than only individual needs, effective in assuring equitable food access, and created by democratic decision-making. These themes are loosely connected in literature about CFS, with no logical linkages among them. Clear articulation in a theoretical framework is needed for CFS to be effective as a guide for policy and action. CFS theory should delimit the level of analysis (i.e., what are the boundaries of “community”); show how CFS relates to individual, household, and national food security and explain emergent properties, which are important at the community level of analysis; point to the best indicators of CFS or its lack; clarify the determinants of CFS; and clarify the stages of movement toward CFS. This theoretical base would allow researchers to develop valid and reliable measures, and allow practitioners to weigh alternative options to create strategic plans. A theoretical base also would help establish common ground with potential partners by making the connections to anti-hunger work, sustainable agriculture, and community development clear.
    Type of Medium: Electronic Resource
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  • 2
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    In:  CASI
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Man/System Technology and Life Support; Lunar and Planetary Science and Exploration
    Type: JSC-CN-35448 , Annual South by Southwest (SXSW) Interactive Festival 2016; Mar 11, 2016 - Mar 15, 2016; Austin, TX; United States
    Format: application/pdf
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  • 3
    Publication Date: 2019-07-13
    Description: Food is one of the most critical elements required for human survival. Though the time to effect may be shorter for oxygen, shelter, or water, the consequences are just as serious. Stored food has also been shown by studies performed by NASA's Evolvable Mars Campaign team to be a significant, multi-ton logistics burden for initial human exploration missions to Mars. Popular fiction and media assumes that in-situ production of food from plants will be part of future space missions. Scientific experiments have demonstrated that plant growth in space is feasible. Crew response to food and their time spent tending the plants also provide evidence for the benefit that plants can have for future missions. However, illustrations of possible options do not prove that biological systems will be cost effective or reliable. On Earth, biological systems are considered robust because they can recover with time, but success conditions for a space mission requires the safe return of the same crewmembers who began the mission, not just recovery of survivable conditions for another group of human beings.
    Keywords: Man/System Technology and Life Support; Lunar and Planetary Science and Exploration
    Type: JSC-CN-40560 , Annual American Society for Gravitational and Space Research (ASGSR) Meeting 2017; Oct 25, 2017 - Oct 28, 2017; Seattle, WA; United States
    Format: application/pdf
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  • 4
    Publication Date: 2019-07-13
    Description: Life support system architectures for long duration space missions are often explored analytically in the human spaceflight community to find optimum solutions for mass, performance, and reliability. But in reality, many other constraints can guide the design when the life support system is examined within the context of an overall vehicle, as well as specific programmatic goals and needs. Between the end of the Constellation program and the development of the "Evolvable Mars Campaign", NASA explored a broad range of mission possibilities. Most of these missions will never be implemented but the lessons learned during these concept development phases may color and guide future analytical studies and eventual life support system architectures. This paper discusses several iterations of design studies from the life support system perspective to examine which requirements and assumptions, programmatic needs, or interfaces drive design. When doing early concept studies, many assumptions have to be made about technology and operations. Data can be pulled from a variety of sources depending on the study needs, including parametric models, historical data, new technologies, and even predictive analysis. In the end, assumptions must be made in the face of uncertainty. Some of these may introduce more risk as to whether the solution for the conceptual design study will still work when designs mature and data becomes available.
    Keywords: Man/System Technology and Life Support; Lunar and Planetary Science and Exploration
    Type: JSC-CN-33269 , International Conference on Environmental Systems (ICES); Jul 12, 2015 - Jul 16, 2015; Bellevue, WA; United States
    Format: application/pdf
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