Literatura académica sobre el tema "Food networks"

In China, the majority of food enterprises are small-sized and medium-sized. While the supervision costs are high, food safety issues are still emerging. Food circulation is an indispensable part in the entire food chain. At present, there are few studies on the regional spread of food safety risks in the circulation field from a macro perspective. This study combines GIS and social network analysis methods to deeply explore the regional circulation characteristics of substandard foods. First, we crawl the dataset of Food Safety Sampling Inspection Result Query System. Then we obtain the geographical locations of the manufacturers and distributors by GIS. Finally, we construct the province-level and city-level substandard foods’ circulation networks, and employ social network analysis to target key cities and paths. The experimental results show that the circulations of substandard foods are characterized by dense province-level network and sparse city-level network, and they are mostly local and short-distance trafficking. 361 cities are divided into 13 city clusters considering the network connection characteristics. Chongqing, Beijing, Zhengzhou, and Changsha are identified as key cities by all measurement indicators, and at least four indicators can identify Shanghai and Wuhan. These cities have the highest priority for combating substandard foods’ circulation networks.

We propose a methodological approach to analyze the content of hyperlink networks which represent networked public spheres on the Internet. Using the case of the food safety movement in the United States, we demonstrate how to generate a hyperlink network with the web crawling tool Issue Crawler and merge it with the results of a probabilistic topic model of the network’s content. Combining hyperlink networks and content analysis allows us to interpret such a network in its entirety and with regard to the mobilizing potentials of specific sub-issues of the movement. We focus on two specific sub-issues in the food safety network, genetically modified food and food control, in order to trace the involved websites and their interlinking structures, respectively.

This article develops the theoretical foundations of supply chain network management in order to investigate the constructs surrounding whole chain success rather than just success at firm level. It is argued that the ‘network success’ link has been under-studied, with most empirical studies focusing on the achievement of goals by an individual firm in a network context. A model of the whole network's success in the context of supply chain networks in food industry supply chain relationships is used. The results identify that network-level goals must be considered alongside firm-level goals in supply chain networks. Furthermore, network-level goals are subject to the impacts of chain management and have to be of particular interest for focal firms that are responsible for the development and implementation of collective strategies.

ObjectiveTo use network science to model complex diet relationships a decade before onset of dementia in a large French cohort, the 3-City Bordeaux study.MethodsWe identified cases of dementia incident to the baseline food frequency questionnaire over 12 years of follow-up. For each case, we randomly selected 2 controls among individuals at risk at the age at case diagnosis and matched for age at diet assessment, sex, education, and season of the survey. We inferred food networks in both cases and controls using mutual information, a measure to detect nonlinear associations, and compared food consumption patterns between groups.ResultsIn the nested case-control study, the mean (SD) duration of follow-up and number of visits were 5.0 (2.5) vs 4.9 (2.6) years and 4.1 (1.0) vs 4.4 (0.9) for cases (n = 209) vs controls (n = 418), respectively. While there were few differences in simple, average food intakes, food networks differed substantially between cases and controls. The network in cases was focused and characterized by charcuterie as the main hub, with connections to foods typical of French southwestern diet and snack foods. In contrast, the network of controls included several disconnected subnetworks reflecting diverse and healthier food choices.ConclusionHow foods are consumed (and not only the quantity consumed) may be important for dementia prevention. Differences in predementia diet networks, suggesting worse eating habits toward charcuterie and snacking, were evident years before diagnosis in this cohort. Network methods, which are designed to model complex systems, may advance our understanding of risk factors for dementia.

The modem network and digitalized society is full of social changes in various accustomed spheres of our lives including transformation in food practices. The author gives an example of the easiest way how to book food virtually and get it home this day according to tastes of a customer. Moreover the article represents new forms of specific societies existed in the Internet called food-blogs. This, on the author's mind, changes the traditional mechanism of people's choice. Food-blogs are analyzed through the prism of multifunctionalism and dynamics of food and trust. When the process of food preparing and eating attains new communicative functions. Moreover the author notes some social reasons why one user choses this or that food-blog. For instance, the popularity of blogger and network users trust, mostly «blinded». Beside the point, the conception of «trust» used in the text is based on science works of contemporary sociologist P. Sztompka. Both socialized and communicative functions of food are described through theories of R. Bart and G. Simmel. It is underlined in the text that food transforms and gains new qualities notin traditional ways we used to think but in social and cultural construction in virtual space and through network communication.

A hypergraph is a generalization of a graph since, in a graph an edge relates only a pair of points, but the edges of a hypergraph known as hyperedges can relate groups of more than two points. The representation of complex systems as graphs is appropriate for the study of certain problems. We give several examples of social, biological, ecological and technological systems where the use of graphs gives very limited information about the structure of the system. We propose to use hypergraphs to represent these systems.

Abstract: This comparative literature review of local food systems, short food supply chains, and civic food networks, subsumed under alternative food networks (AFN), suggests converging them into the novel umbrella-term values-based territorial food networks (VTFN). Based on the analysis of specificities and shortcomings in the four concepts, VTFN aims to enhance conceptual clarity, while the current coexistence conceals structural and systemic commonalities—relevant for understanding pathways to ethical and sustainable food system transformations. Taking stock of issues in the four concepts, VTFN strives to be overarching and pragmatic. It qualifies AFN’s “alternativeness” through social, economic, environmental and governance “sustainability values” and through the co-construction of “territoriality” in varying constellations. Thus, it fosters integrated scientific dialogue about conceptual determinations of emerging networks of food system transitions worldwide.Resumen: Esta revisión bibliográfica comparativa de los sistemas alimentarios locales, las cadenas cortas de suministro de alimentos y las redes alimentarias cívicas, comprendidas en las redes alimentarias alternativas (RAA), sugiere englobarlas en el novedoso término redes alimentarias territoriales basadas en valores (RATV). Basándose en un análisis de especificidades y deficiencias, el RATV aporta claridad conceptual, en contraste con la coexistencia de los conceptos analizados que oculta puntos estructurales y sistémicos en común relevantes para entender las vías para transformar los sistemas alimentarios éticos y sostenibles. Reflexionando sobre los cuatro conceptos, la RATV busca ser global y pragmática. Califica lo “alternativo” de las RAA a través de “valores de sostenibilidad” sociales, económicos, medioambientales y de gobernanza, y de la co-construcción de la “territorialidad” en constelaciones diversas. Por ello, fomenta el diálogo científico integrado sobre las determinaciones conceptuales de las redes emergentes de transiciones de los sistemas alimentarios en todo el mundo.Résumé : Cet article se consacre à une revue de littérature comparative des concepts de Systèmes Alimentaires Locaux (Local Food Systems – LFS), Circuits Courts et de Proximité (Short Food Supply Chains – SFSC), Réseaux Alimentaires Civiques (Civic Food Networks – CFN), rassemblés sous le concept ombrelle de Réseaux Alimentaires Alternatifs (Alternative Food Networks – AFN). Il propose ensuite de les converger en un nouveau concept ombrelle, nommé Réseaux Alimentaires Éthiques et Territoriaux (Values-Based Territorial Food Networks – VTFN). Basé sur l’analyse des spécificités et des faiblesses des quatre concepts courants dans la littérature scientifique, la notion de VTFN apporte une clarté conceptuelle, car la coexistence actuelle de plusieurs concepts masque des points communs structuraux et systémiques – pourtant essentiels pour comprendre les processus de transformations éthiques et durables des systèmes alimentaires. Tout en puisant dans les apports des quatre concepts courants, la notion de VTFN aspire à être englobante et pragmatique. Elle qualifie les aspects “alternatifs” des Réseaux Alimentaires Alternatifs (Alternative Food Networks – AFN) par un cadre de quatre ensembles-clés de “valeurs de durabilité” – que sont l’intégrité environnementale, le bien-être social, la gouvernance éthique et la résilience économique –, ainsi que par une co-construction de “territorialité” en constellations variables. Ainsi, le concept de VTFN favorise un dialogue scientifique intégré sur les déterminations conceptuelles de réseaux émergents de transitions des systèmes alimentaires mondiaux.

This commentary reflects on a two-day conference, Réseaux alimentaires alternatifs au Québec. Perspectives comparatives, held in Montreal on May 12 & 13, 2016, during the 84th Congress of ACFAS (Association canadienne-française pour l’avancement des sciences). The event was organized by Patrick Mundler (Department of Agroeconomy & Consumption Studies) and Manon Boulianne (Department of Anthropology), both from Université Laval.