Sensing Materials: Optical Sensing Based on Carbon Quantum Dots

Cruz, A.A.C.; Carneiro, Samuel Veloso; Pontes, Sheyliane Maria Adriano; Oliveira, José Alberto Alves; Lima, Juliano Silva; Costa, Vagner Machado; Fechine, Lillian Maria Uchôa Dutra; Clemente, Claudenilson S.; Freire, Rafael M.; Fechine, Pierre Basílio Almeida

doi:10.1016/b978-0-12-822548-6.00025-x

Cited by 1 publication

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“…25 In a typical PCA analysis, two results are generated, loadings and score plots. The loading vectors explain the correlation between variables and components by measuring the specific effects of variables on the components, on the other hand, the score vectors define the trajectory of the principal components with respect to the observations.- 26 All factors whose eigenvalues (squared factor loadings that load on a factor taken together) exceed one, as well as the inflection point of a scree plot, are well-known standard criteria (graph of each eigenvalue against the respective factors) to determine the number of factors to be extracted. Theoretically, the first factor in PCA accounts for the maximum variation between the factors, and the subsequent components do not correlate with the previous PCs and express as much of the remaining information as possible.…”

Section: Data and Research Methodologymentioning

confidence: 99%

Analysis of Food System Topics from the Consumers’ Perspective in a Developing Country Context: Key Insights from ANRS Metropolitan Cities, Ethiopia

Mengesha¹

2021

RMHP

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Background: The food system is an interdisciplinary global issue with substantial social and economic challenges. These challenges are most pronounced in developing countries, where chronic under-nutrition is prevalent. The long-standing notion has been to solve malnutrition and undernutrition primarily from the supply side through improving productivity and production. Nevertheless, addressing the nutrition paradox requires understanding consumers' food choices and its drivers. Methods: This study forms a part of a research project conducted in the ANRS, Ethiopia, in both urban and rural settings. To select study participants and collect data from the ANRS metropolitan cities, we used a household-based cross-sectional study and a multistage sampling technique. Data were collected using a structured questionnaire, and the study used a descriptive research method and a quantitative research approach in its analysis. PCA was used to identify which topics in the food system are most important to consumers. Results: To identify widely held consumer interests, respondents were asked to report their interest in several relevant topics. The results show that food systems' external impact, food safety, food nutrition, impact of other bodies on the food system, and food supply sustainability are the most crucial food topics where consumers are interested. Conclusion: Concerned stakeholders who can help enhance household dietary practices in the study area; producers and other stakeholders who care about environmental sustainability and/or social values might use this information to adjust their production and marketing decisions to align with the food system topics that consumers identified as their priority. Limitations: While the PCA allows for the reduction of multiple indices into a single composite index, it may restrict the targeting of a particular aspect of the food system topic. As a result, the indices' meaning, and implications should be made while keeping the downsides in mind.

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Section: Data and Research Methodologymentioning

confidence: 99%

Analysis of Food System Topics from the Consumers’ Perspective in a Developing Country Context: Key Insights from ANRS Metropolitan Cities, Ethiopia

Mengesha¹

2021

RMHP

View full text Add to dashboard Cite

show abstract

Sensing Materials: Optical Sensing Based on Carbon Quantum Dots

Cited by 1 publication

References 100 publications

Analysis of Food System Topics from the Consumers’ Perspective in a Developing Country Context: Key Insights from ANRS Metropolitan Cities, Ethiopia

Analysis of Food System Topics from the Consumers’ Perspective in a Developing Country Context: Key Insights from ANRS Metropolitan Cities, Ethiopia

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