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  2. Netchain analysis - Wikipedia

    en.wikipedia.org/wiki/Netchain_analysis

    Netchain analysis is a theoretical concept integrating supply chain management and network analysis which was introduced by Lazzarini, Chaddad and Cook in 2001. [1] While supply chain analysis focuses on vertical and network analysis on horizontal interdependencies across companies, netchain analysis incorporates both type of interdependencies into one concept.

  3. Joint probability distribution - Wikipedia

    en.wikipedia.org/wiki/Joint_probability_distribution

    If the points in the joint probability distribution of X and Y that receive positive probability tend to fall along a line of positive (or negative) slope, ρ XY is near +1 (or −1). If ρ XY equals +1 or −1, it can be shown that the points in the joint probability distribution that receive positive probability fall exactly along a straight ...

  4. Frequency (statistics) - Wikipedia

    en.wikipedia.org/wiki/Frequency_(statistics)

    Each entry in the table contains the frequency or count of the occurrences of values within a particular group or interval, and in this way, the table summarizes the distribution of values in the sample. This is an example of a univariate (=single variable) frequency table. The frequency of each response to a survey question is depicted.

  5. Food chain - Wikipedia

    en.wikipedia.org/wiki/Food_chain

    Food chain in a Swedish lake. Osprey feed on northern pike, which in turn feed on perch which eat bleak which eat crustaceans.. A food chain is a linear network of links in a food web, often starting with an autotroph (such as grass or algae), also called a producer, and typically ending at an apex predator (such as grizzly bears or killer whales), detritivore (such as earthworms and woodlice ...

  6. Short food supply chains - Wikipedia

    en.wikipedia.org/wiki/Short_food_supply_chains

    Shortening the food chain encourages social sustainability through trust, solidarity, and shared values between producers and consumers, facilitated by closer proximity among supply chain actors. [13] Shortening the food chain also creates positive social sustainability outcomes, such as consumer empowerment, promotion of healthy diets, and ...

  7. Multivariate normal distribution - Wikipedia

    en.wikipedia.org/wiki/Multivariate_normal...

    The probability content of the multivariate normal in a quadratic domain defined by () = ′ + ′ + > (where is a matrix, is a vector, and is a scalar), which is relevant for Bayesian classification/decision theory using Gaussian discriminant analysis, is given by the generalized chi-squared distribution. [17]

  8. Food web - Wikipedia

    en.wikipedia.org/wiki/Food_web

    A freshwater aquatic food web. The blue arrows show a complete food chain (algae → daphnia → gizzard shad → largemouth bass → great blue heron). A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.

  9. Agrifood systems - Wikipedia

    en.wikipedia.org/wiki/Agrifood_systems

    The definition of agrifood systems' resilience is adapted from Tendall et al.'s definition of food system resilience, which is “capacity over time of a food system and its units at multiple levels, to provide sufficient, appropriate and accessible food to all, in the face of various and even unforeseen disturbances”.