Essays about: "thesis on food security systems"

Showing result 16 - 20 of 44 essays containing the words thesis on food security systems.

  1. 16. Rooftop plant factories: effects on energy use for heating, cooling and electric lighting

    University essay from Lunds universitet/Avdelningen för Energi och byggnadsdesign; Lunds universitet/Institutionen för arkitektur och byggd miljö

    Author : Yizhi Zhang; [2021]
    Keywords : Urban and peri-urban agriculture and forestry UPAF ; urban farming UF ; rooftop greenhouse RTG ; lighting; daylighting; energy conservation; roof; greenhouse; food; cities.; Technology and Engineering;

    Abstract : Within the next thirty years, two thirds of the human population will live in a city. This growing urban population requires a major shift in the way we produce and distribute food, since industrial agriculture practices contribute to climate change, biodiversity losses, pollution of waterways, soil degradation, etc. READ MORE

  3. 17. Risodling i Mekongdeltat : hur påverkas risodling i Mekongdeltat av klimatförändringarna och vattenkraften?

    University essay from SLU/Dept. of Urban and Rural Development

    Author : Mathilda Ogden; [2021]
    Keywords : Vietnam; Mekongdelta; risodling; klimatförändring; vattenkraft;

    Abstract : Uppsatsen redogör för hur klimatförändringen och vattenkraften i Mekongregionen påverkar risodling i Mekongdeltat samt vad det betyder för livsmedelssäkerheten och fattigdomsbekämpningen i Vietnam. Cirka 40% av Vietnams landyta används till jordbruk och Mekongdeltat är ett av världens största jordbrukssystem för risodling (Food and Agriculture Organization of the United Nations, 2018). READ MORE

  4. 18. Life cycle assessment of DHA produced by microalgae using food waste : Assessing global warming, fossil energy use and effects on biodiversity

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Louise Bartek; [2020]
    Keywords : Life cycle assessment LCA ; docosahexaenoic acid DHA ; biodiversity loss; volatile fatty acids VFA ; global warming; sustainable development; Livscykelanalys LCA ; dokosahexaensyra DHA ; biodiversitet; flyktiga fettsyror VFA ; global uppvärmning; hållbar utveckling;

    Abstract : Biodiversity is a key component for life on Earth since it contributes to clean water, fresh air and food security. Today, fatty fish farmed in aquaculture is the main Omega 3 source consumed by humans, including the essential fatty acid docosahexaenoic acid (DHA). DHA origin from plants and accumulate in fish via the marine food web. READ MORE

  5. 19. Monovalent selective electrodialysis in greenhouses - An analysis of brackish groundwater and greenhouse wastewater treatment

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Georg Schücking; [2020]
    Keywords : desalination; water treatment; greenhouses; ED; MSED; monovalent selective electrodialysis; groundwater; sodium; nitrate; water engineering; environmental engineering; vattenförsörjningsteknik; avloppsteknik; Technology and Engineering;

    Abstract : Water use in greenhouse can be optimized by switching to alternative sources of irrigation water and building zero-liquid discharge systems that recirculate greenhouse effluent. The use of brackish groundwater (BGW) has become a popular option for greenhouses that have adopted reverse osmosis (RO) to reduce the salinity of their source water. READ MORE

  6. 20. Multitask Convolutional Neural Network Emulators for Global Crop Models - Supervised Deep Learning in Large Hypercubes of Non-IID Data

    University essay from Lunds universitet/Matematisk statistik

    Author : Amanda Nilsson; [2020]
    Keywords : Multitask Learning; Convolutional Neural Network CNN ; Branched Neural Network; Dynamic Global Vegetation Models DGVM ; Automated Feature Extraction; Feature Importance; Supervised Machine Learning; Emulator; Surrogate Model; Response Surface Model; Approximation Model; Metamodeling; Model Composition; Regularization; Robustness; Hyperparameter Optimization; Mathematics and Statistics;

    Abstract : The aim of this thesis is to establish whether a neural network (NN) can be used for emulation of simulated global crop production - retrieved from the computationally demanding dynamic global vegetation model (DGVM) Lund-Potsdam-Jena General Ecosystem Simulator (LPJ-GUESS). It has been devoted to elaboration with various types of neural network architectures: Branched NNs capable of processing inputs of mixed data types; Convolutional Neural Network (CNN) architectures able to perform automated temporal feature extraction of the given weather time series; simpler fully connected (FC) structures as well as Multitask NNs. READ MORE