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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
13/04/2005 |
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Data da última atualização: |
17/01/2020 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
OLIVEIRA, S. R. de M.; ZAÏANE, O. |
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Afiliação: |
STANLEY ROBSON DE MEDEIROS OLIVEIRA, CNPTIA; OSMAR R. ZAÏANE, University of Alberta. |
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Título: |
Privacy-preserving clustering by object similarity-based representation and dimensionality reduction transformation. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: WORKSHOP ON PRIVACY AND SECURITY ASPECTS OF DATA MINING; IEEE INTERNATIONAL CONFERENCE ON DATA MINING, 4., 2004, Brighton, UK. Proceedings... Brighton: IEEE Computer Society, 2004. p. 21-30. |
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Idioma: |
Inglês |
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Notas: |
Na publicação: Stanley R. M. Oliveira. |
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Conteúdo: |
Preserving privacy of individuals when data are shared for clustering is a challenging problem. Data owners must not only meet privacy requirements but also guarantee valid clustering results. In this paper, we show that this dual goal can be achieved by transforming a database using two simple and effective data transformations: Object Similarity-Based Representation (OSBR) and Dimensionality Reduction-Based Transformation (DRBT). The former relies on the idea behind the similarity between objects, and the latter relies on the intuition behind random projection. The major features of our data transformations are: a) they are independent of distance-based clustering algorithms; b) they have a sound mathematical foundation; and c) they do not require CPU-intensive operations. |
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Palavras-Chave: |
Pattern recognition; Privacidade; Reconhecimento de padrões. |
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Thesaurus Nal: |
Cluster analysis. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01560nam a2200181 a 4500
001 1009007
005 2020-01-17
008 2004 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, S. R. de M.
245 $aPrivacy-preserving clustering by object similarity-based representation and dimensionality reduction transformation.$h[electronic resource]
260 $aIn: WORKSHOP ON PRIVACY AND SECURITY ASPECTS OF DATA MINING; IEEE INTERNATIONAL CONFERENCE ON DATA MINING, 4., 2004, Brighton, UK. Proceedings... Brighton: IEEE Computer Society, 2004. p. 21-30.$c2004
500 $aNa publicação: Stanley R. M. Oliveira.
520 $aPreserving privacy of individuals when data are shared for clustering is a challenging problem. Data owners must not only meet privacy requirements but also guarantee valid clustering results. In this paper, we show that this dual goal can be achieved by transforming a database using two simple and effective data transformations: Object Similarity-Based Representation (OSBR) and Dimensionality Reduction-Based Transformation (DRBT). The former relies on the idea behind the similarity between objects, and the latter relies on the intuition behind random projection. The major features of our data transformations are: a) they are independent of distance-based clustering algorithms; b) they have a sound mathematical foundation; and c) they do not require CPU-intensive operations.
650 $aCluster analysis
653 $aPattern recognition
653 $aPrivacidade
653 $aReconhecimento de padrões
700 1 $aZAÏANE, O.
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Embrapa Agricultura Digital (CNPTIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
11/02/2022 |
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Data da última atualização: |
11/02/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
SOUZA, R. A. de; LYRA, M. R. C. C.; CARVALHO, R. M. C. M. de O.; ARAUJO FILHO, J. C. de. |
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Afiliação: |
REGINALDO ALVES DE SOUZA, IFPE; MARÍLIA REGINA COSTA CASTRO LYRA, IFPE; RENATA MARIA CAMINHA MENDES DE OLIVEIRA CARVALHO, IFPE; JOSE COELHO DE ARAUJO FILHO, CNPS. |
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Título: |
Sertanejo biodigestor: a social technology, an alternative source of energy. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Revista Brasileira de Ciências Ambientais, v. 56, n. 4, p. 630-642, dez. 2021. |
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DOI: |
https://doi.org/10.5327/Z21769478987 |
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Idioma: |
Inglês |
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Conteúdo: |
The use of biogas as an alternative to using liquefied petroleum gas (LPG) for cooking food in the context of family farming is something recent and has ample room for growth. The aim of this study was to evaluate the use of the Sertanejo biodigester by farming families as a social technology for cooking gas production, as well as an alternative energy source. It also aimed to identify elements which contribute to disseminating this technology as an alternative to the use of firewood, charcoal and LPG. Quali-quantitative approaches were used following the exploratory method, with interviews and non-probabilistic sampling. A population with 132 units of biodigesters in the Agreste mesoregion of the State of Pernambuco was considered, with 83 interviews being collected. The results indicated that the Sertanejo biodigester social technology provides an increase in the income of farming families, avoids the use of firewood and charcoal for cooking food and produces biofertilizer for crops. They also showed that its non-continuous use or deactivation is related to a lack of raw material and the need for maintenance. Given this scenario, its implementation must consider the availability of a raw material source in the production unit and the potential for biogas production from the existing herd and consumption demand. It is recommended to strengthen arguments of economic and environmental impact for low-income families to disseminate this technology; to encourage the use of biogas associated with other activities in the production system; and to incorporate biodigestor social technology in rural credit financing lines. MenosThe use of biogas as an alternative to using liquefied petroleum gas (LPG) for cooking food in the context of family farming is something recent and has ample room for growth. The aim of this study was to evaluate the use of the Sertanejo biodigester by farming families as a social technology for cooking gas production, as well as an alternative energy source. It also aimed to identify elements which contribute to disseminating this technology as an alternative to the use of firewood, charcoal and LPG. Quali-quantitative approaches were used following the exploratory method, with interviews and non-probabilistic sampling. A population with 132 units of biodigesters in the Agreste mesoregion of the State of Pernambuco was considered, with 83 interviews being collected. The results indicated that the Sertanejo biodigester social technology provides an increase in the income of farming families, avoids the use of firewood and charcoal for cooking food and produces biofertilizer for crops. They also showed that its non-continuous use or deactivation is related to a lack of raw material and the need for maintenance. Given this scenario, its implementation must consider the availability of a raw material source in the production unit and the potential for biogas production from the existing herd and consumption demand. It is recommended to strengthen arguments of economic and environmental impact for low-income families to disseminate this technology; to encourage the use of bioga... Mostrar Tudo |
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Palavras-Chave: |
National Rural Housing Program; Programa Nacional de Habitação Rural; Semiárido; Social technology. |
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Thesagro: |
Agricultura Familiar; Biogás; Mudança Climática; Tecnologia. |
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Thesaurus NAL: |
Climate change; Family farms; Semiarid zones. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/231229/1/Sertanejo-biodigestor-a-social-technology-2021.pdf
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Marc: |
LEADER 02598naa a2200301 a 4500
001 2139965
005 2022-02-11
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.5327/Z21769478987$2DOI
100 1 $aSOUZA, R. A. de
245 $aSertanejo biodigestor$ba social technology, an alternative source of energy.$h[electronic resource]
260 $c2021
520 $aThe use of biogas as an alternative to using liquefied petroleum gas (LPG) for cooking food in the context of family farming is something recent and has ample room for growth. The aim of this study was to evaluate the use of the Sertanejo biodigester by farming families as a social technology for cooking gas production, as well as an alternative energy source. It also aimed to identify elements which contribute to disseminating this technology as an alternative to the use of firewood, charcoal and LPG. Quali-quantitative approaches were used following the exploratory method, with interviews and non-probabilistic sampling. A population with 132 units of biodigesters in the Agreste mesoregion of the State of Pernambuco was considered, with 83 interviews being collected. The results indicated that the Sertanejo biodigester social technology provides an increase in the income of farming families, avoids the use of firewood and charcoal for cooking food and produces biofertilizer for crops. They also showed that its non-continuous use or deactivation is related to a lack of raw material and the need for maintenance. Given this scenario, its implementation must consider the availability of a raw material source in the production unit and the potential for biogas production from the existing herd and consumption demand. It is recommended to strengthen arguments of economic and environmental impact for low-income families to disseminate this technology; to encourage the use of biogas associated with other activities in the production system; and to incorporate biodigestor social technology in rural credit financing lines.
650 $aClimate change
650 $aFamily farms
650 $aSemiarid zones
650 $aAgricultura Familiar
650 $aBiogás
650 $aMudança Climática
650 $aTecnologia
653 $aNational Rural Housing Program
653 $aPrograma Nacional de Habitação Rural
653 $aSemiárido
653 $aSocial technology
700 1 $aLYRA, M. R. C. C.
700 1 $aCARVALHO, R. M. C. M. de O.
700 1 $aARAUJO FILHO, J. C. de
773 $tRevista Brasileira de Ciências Ambientais$gv. 56, n. 4, p. 630-642, dez. 2021.
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