Academic literature on the topic 'Modello multidimensionale integrato'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Modello multidimensionale integrato.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Modello multidimensionale integrato"
1
Caffi, Claudia. "La mitigazione: tappe di un itinerario di ricerca." Normas 7, no. 1 (June 23, 2017): 4. http://dx.doi.org/10.7203/normas.7.10421.
Full textAbstract:
In questo articolo richiamerò i punti salienti del modello linguistico pragmatico integrato che ruota intorno al concetto multilivellare e multidimensionale di «mitigazione» (Caffi 2001, 2007) focalizzando l’attenzione su alcuni aspetti che sono stati lasciati in ombra o che, pur ribaditi in diverse sedi, non sono stati sufficientemente intesi, e aggiornandoli alla luce delle mie ricerche più recenti. Di un lungo percorso, con diverse digressioni e ritorni, riassumerò in forma distillata alcune tappe fondamentali per accennare infine ad alcune prossime tappe. Più specificatamente, il presente contributo si articola in tre parti che hanno i seguenti scopi: richiamare alcune definizioni, punti chiave e sfondi teorici alla base del mio modello. Con un’operazione selettiva molto drastica, metterò in risalto i concetti che ritengo fondamentali;richiamare il criterio euristico alla base delle tipologie formali e funzionali proposte in Caffi (2001, 2007); accennare all’estensione delle applicazioni del modello, in diamesia e diafasia, a un genere particolare di testo scritto, il testo scientifico di ricerca biomedica.
2
Inostroza González, Claudio Alejandro. "Modelo integrado de reputación: un constructo, cuatro dimensiones." Ciencias Económicas 1 (November 1, 2019): 95–103. http://dx.doi.org/10.14409/rce.v1i0.8736.
Full textAbstract:
La literatura académica en management no ofrece un consenso respecto del concepto de reputación. Esto hace pensar que el constructo posee una estructura multidimensional que incorpora interacciones y relaciones de múltiples atributos, que son percibidos por los stakeholders. Los enfoques existentes abordan la reputación organizacional, por lo general, desde una dimensión específica. Esta investigación analiza la reputación como recurso estratégico desde la perspectiva de Resource Based View para proponer un modelo teórico que incorpora cuatro dimensiones en su evaluación: prominencia, legitimidad, calidad y aspectos distintivos. El modelo puede ser utilizado para gestionar la reputación, manejando cada una de sus cuatro perspectivas. El entender sus relaciones permite a la organización tener un cuadro general de la situación en que se encuentra su reputación y saber cuáles son los aspectos que deben reforzar.
3
Baque Hidalgo, Jeniffer Elizabeth, Mariana Concepción Vallejo Martínez, and Evelyn Frias-Toral. "Propuesta de modelo integral de intervención terapéutica paliativa en salud." Bionatura 7, no. 2 (May 15, 2022): 1–9. http://dx.doi.org/10.21931/rb/2022.07.02.12.
Full textAbstract:
Los Cuidados Paliativos (CP) constituyen un valor y una responsabilidad de los sistemas sanitarios y sociales. En vista de la alta demanda de servicios para la atención integral y humanizada del paciente con enfermedad crónica, degenerativa e irreversible, es necesario crear un modelo de atención integral paliativa con el fin de ejecutarlo en una población requiriente del mismo. Los CP son un derecho de la persona, reconocido internacionalmente, que ha de prestarse en 3 niveles de atención: primario (básico), secundario (atención especializada - AE) y terciario (Unidades de Cuidados Paliativos - UCP). El primer nivel de atención es responsable de los cuidados paliativos domiciliarios y debe garantizarlos cuando la complejidad no es elevada. La presente revisión bibliográfica propone un modelo integral, integrado e integrador de cuidados paliativos CP que permita justificar las intervenciones terapéuticas con el objetivo de obtener bienestar o atenuación del sufrimiento en pacientes que acuden al primer nivel de atención. Palabras claves. Cuidados paliativos, evaluación integral, evaluación de necesidades multidimensionales, derivación, complejidad.
4
Alves, Angela Gilda, Flaviane Cristina Rocha Cesar, Maria Alves Barbosa, Lizete Malagoni de Almeida Cavalcante Oliveira, Edinamar Aparecida Santos da Silva, and Dolors Rodríguez-Martín. "Dimensões da violência do aluno contra o professor." Ciência & Saúde Coletiva 27, no. 3 (March 2022): 1027–38. http://dx.doi.org/10.1590/1413-81232022273.07002021.
Full textAbstract:
Resumo A violência contra o professor é uma preocupação global e traz impacto negativo para o desenvolvimento da sociedade. Nesse contexto, o estudo objetivou revisar definições de violência contra o professor para desenvolver consenso integrado e modelo conceitual. Foi realizada uma revisão de escopo de literatura para incluir artigos que pudessem responder à pergunta norteadora da pesquisa: “Quais são as definições e as dimensões da violência do aluno contra o professor no ensino?” Nos estudos incluídos na revisão, identificou-se que a violência contra o professor pode ser definida como o conjunto de ações e situações provocadas por estudantes de forma insidiosa ou crônica no local de trabalho e/ou meio digital, mediadas por percepção de violência, mecanismo de enfrentamento do professor e gestão organizacional da violência. O modelo integrado de violência contra o professor compreende antecedentes conceituais, como a experiência anterior com violência contra o docente, definição cultural de violência e percepção de vitimização. A violência propriamente dita contra o professor é um construto multidimensional que resulta da interação com o estudante nos contextos organizacional e social. As consequências da violência contra o professor incluem danos psicológicos, emocionais, biológicos, profissionais e sociais.
5
Santos, Solange Laurentino dos, and Lia Giraldo da Silva Augusto. "Modelo multidimensional para o controle da dengue: uma proposta com base na reprodução social e situações de riscos." Physis: Revista de Saúde Coletiva 21, no. 1 (2011): 177–96. http://dx.doi.org/10.1590/s0103-73312011000100011.
Full textAbstract:
O objetivo do artigo consiste em apresentar e discutir um modelo compreensivo/explicativo, de caráter ecossistêmico, sobre o processo de transmissão da dengue nos níveis de micro e macrocontexto, a partir da identificação das situações de riscos envolvidas. Considerou-se a dengue como doença infecciosa viral de transmissão vetorial que traz, na sua dinâmica de transmissão, elementos das dimensões biológicas, de conduta, ecológicas, políticas e econômicas, o que a caracteriza como um problema complexo e exige um enfoque sistêmico para seu controle. Assim, para a construção da modelagem, utilizaram-se o enfoque teórico da reprodução social de Juan Samaja e seus condicionantes de macro e microcontexto, e o enfoque operativo ecossistêmico, que buscou responder à pergunta condutora desta construção: quais são as situações de risco para transmissão da dengue, considerando as diversas dimensões da "reprodução social da saúde" no nível local? A visão ampliada das inter-relações entre as diversas situações de risco envolvidas na determinação multidimensional da dengue poderá servir como eixo direcionador para uma gestão integrada das ações do programa de controle da doença, articuladas entre os diversos setores envolvidos.
6
Chacón-Fiallo, Oswaldo, and Laura Zapata-Cantú. "¿Qué significa desempeño (superior) en administración estratégica?" Multidisciplinary Business Review 14, no. 1 (March 25, 2021): 95–107. http://dx.doi.org/10.35692/07183992.14.1.9.
Full textAbstract:
El propósito de este artículo es dilucidar la noción de desempeño (firm performance) en las escuelas más representativas de la administración estratégica (Strategic Management) y contribuir mediante una definición y un modelo conceptual integrador para su comprensión de forma multidimensional y multinivel. A través de una revisión de la literatura, en la que se incluyen los trabajos seminales –teóricos y empíricos— de las perspectivas de organización industrial, recursos y capacidades, capacidades dinámicas y basadas en el conocimiento se identifica el tratamiento del constructo desempeño. Posteriormente, se establecen similitudes y diferencias, cuyo resultado se presenta en un modelo conceptual integrador. En administración estratégica, se ha utilizado la expresión firm performance para explicar las consecuencias de la ejecución de la estrategia. Sin embargo, en la revisión de la literatura se ha encontrado que el desempeño como constructo presenta ambigüedad en su definición y falta de delimitación epistemológica, lo cual dificulta su comprensión, investigación y uso en el ámbito gerencial, por ejemplo, en lo referido a fijación de objetivos y medición de su cumplimiento. Igualmente, se evidenciaron convergencias entre algunas de las perspectivas teóricas revisadas respecto al valor como métrica de la eficacia de la ejecución de la estrategia y de la contribución de la organización a la satisfacción de expectativas de sus grupos de interés. Este artículo identifica convergencias y divergencias en las escuelas más representativas de la administración estratégica, lo que permite formular de manera original una definición integral de desempeño, un modelo conceptual integrador en el cual el valor se constituye en métrica eficaz del desempeño empresarial.
7
Silva, Helito de Abreu, Mayara Aparecida Braga da Silva, Joice Lopes Werneck, Antônio Paulo André de Castro, and Ana Beatriz Dos Reis Rodrigues. "Experiência de alunos e profissionais no programa de educação pelo trabalho para a saúde no acolhimento aos portadores de Doenças Crônicas não transmissíveis." Revista Saber Digital 15, no. 2 (August 29, 2022): e20221511. http://dx.doi.org/10.24859/saberdigital.2022v15n2.1269.
Full textAbstract:
Introdução: A Educação Interprofissional se apresenta como um novo conceito em saúde pela adoção de elementos capazes de inverter a lógica da educação verticalizada, promovendo o aprendizado compartilhado e colaborativo, contribuindo para a formação e qualificação dos profissionais de saúde, possuindo uma abordagem mais integrada e multidimensional das doenças crônicas. Objetivos: O estudo teve como objetivos analisar e descrever a contribuição do PET-Saúde/Interprofissionalidade a partir da Educação Interprofissional para a formação de alunos e a visão dos preceptores da área da saúde inseridos nesse programa e criar uma ferramenta interprofissional de acolhimento e estratificação de risco para o atendimento de pacientes diabéticos e/ou hipertensos em uma Estratégia de Saúde da Família. Materiais e métodos: Trata-se de um estudo exploratório e descritivo com abordagem quali- quantitativa realizado durante o Programa de Educação pelo Trabalho para a Saúde - PET-Saúde Interprofissionalidade do município de Valença nos anos de 2020 e 2021. A coleta de dados foi realizada em uma Estratégia de Saúde da Família desse município. Resultados e Discussão: O presente estudo evidenciou a importância do trabalho interprofissional, bem como a integração entre ensino-serviço-comunidade, além de ratificar a importância do PET-Saúde/Interprofissionalidade enquanto estratégia para a formação profissional e aperfeiçoamento do modelo de atendimento ao usuário no SUS. Conclusão: A EIP é um modo de formação em saúde que promove o trabalho em equipe colaborativo e integrado entre profissionais de diferentes áreas de saúde da população, com a finalidade de melhorar as respostas dos serviços a essas necessidades e a qualidade da atenção à saúde.
8
Menezes, Helena Isabel Monteiro, M. S. Lemos, and L. P. Rodrigues. "A multidimensionalidade da adaptação escolar na pré-adolescência." Análise Psicológica 34, no. 4 (December 12, 2016): 403–22. http://dx.doi.org/10.14417/ap.1102.
Full textAbstract:
A presente investigação procura fomentar a reflexão e a compreensão do fenómeno da adaptação escolar. Partindo da exploração da literatura e de um conjunto de pressupostos teóricos de ordem desenvolvimental e ecológica, foi concetualmente delineado e testado um modelo multidimensional de adaptação escolar na pré-adolescência. O modelo examina principalmente dimensões sociais, mas também a dimensão académica e o nível socioeconómico familiar, propondo uma visão integrada da adaptação escolar. O estudo empírico desenvolveu-se junto de 706 estudantes pré-adolescentes e avaliou as perceções do próprio estudante e as perceções dos professores e pares acerca da competência social dos estudantes. O teste empírico ao Modelo de Adaptação Escolar evidencia um ajustamento global razoável, suportando as associações preconizadas entre as componentes da competência social e entre estas componentes sociais e a realização académica e o nível socioeconómico e cultural da família. Estes resultados sublinham a necessidade de considerar múltiplas facetas na avaliação e promoção da adaptação escolar, reconhecendo-se que esta engloba especialmente conexões entre a competência social e realização académica do estudante. Estes resultados serão ainda alvo de reflexão e discussão, sendo extraídas implicações para a investigação, teoria e intervenção.
9
Soto González, Rodolfo, and Mauricio López Cruz. "La participación de las personas con discapacidad en el contexto educativo: propuestas conceptuales y metodológicas." Foro de Educación 20, no. 1 (June 4, 2022): 173–96. http://dx.doi.org/10.14516/fde.918.
Full textAbstract:
Se presenta una propuesta conceptual acerca de la participación con la finalidad de promoverla en el entorno educativo, especialmente para las personas con discapacidad. El constructo elaborado integra las aportaciones de múltiples perspectivas teóricas, las que incluyen el modelo sociológico de la discapacidad, el modelo multidimensional de la discapacidad, el enfoque sociocultural del desarrollo y el aprendizaje, el enfoque de derechos humanos y el enfoque de educación inclusiva. Para tales efectos, se realiza una revisión general de cada uno de los enfoques y se identifican los principales aportes conceptuales en torno a la comprensión de la participación. A partir de la definición integrada de participación formulada y el entendimiento de las formas narrativas de los significados, se postula que la participación se conforma en una experiencia narrativa que puede ser estudiada desde un enfoque narrativo. Además, se argumenta que esta propuesta metodológica, que apunta al estudio de las experiencias de participación, es coherente con el marco de la investigación inclusiva. Por último, se delinean algunas sugerencias metodológicas para investigar las experiencias de participación de personas con discapacidad en el escenario educativo.
10
Oliveira, Luã Kramer de, Wanderlei Pignati, Marta Gislene Pignatti, Lucimara Beserra, and Luís Henrique da Costa Leão. "Processo sócio-sanitário-ambiental da poluição por agrotóxicos na bacia dos rios Juruena, Tapajós e Amazonas em Mato Grosso, Brasil." Saúde e Sociedade 27, no. 2 (June 2018): 573–87. http://dx.doi.org/10.1590/s0104-12902018170904.
Full textAbstract:
Resumo O objetivo do estudo foi compreender o processo de poluição ambiental por agrotóxicos nos municípios de Campo Novo do Parecis, Sapezal e Campos de Júlio, em Mato Grosso, Brasil. Utilizou-se modelo interpretativo integrado, multidimensionado e contextualizado, que compreende o fenômeno da contaminação como processo histórico, sócio-sanitário-ambiental, de modo a superar a abordagem restrita aos resultados das análises laboratoriais. Identificou-se no processo de poluição química rural real que os latifúndios, onde são produzidos anualmente milhões de toneladas de produtos agrícolas, são os principais responsáveis pelo uso de agrotóxicos, gerando processos de poluição ambiental e doenças no ser humano. Na poluição química rural atual, destacou-se uso elevado de agrotóxicos por habitante (350 a 600 litros/habitante) e do herbicida glifosato nas plantações de soja transgênica (45% do volume total), e as recentes autorizações do uso do inseticida benzoato de emamectina e da soja e do milho transgênicos resistentes ao herbicida 2,4-D. A aplicação deste modelo interpretativo ampliado permitiu expandir o olhar científico, incorporando aspectos indispensáveis para a compreensão do impacto negativo dos agrotóxicos à saúde e ao ambiente e para construção de ações coletivas de prevenção de doenças e promoção da saúde no contexto do agronegócio brasileiro.
Dissertations / Theses on the topic "Modello multidimensionale integrato"
1
Bechlin, André Ricardo. "Análise multidimensional do processo integracionista do Mercado Comum do Sul." Universidade Estadual do Oeste do Parana, 2010. http://tede.unioeste.br:8080/tede/handle/tede/2272.
Full textAbstract:
Made available in DSpace on 2017-07-10T18:33:48Z (GMT). No. of bitstreams: 1
Andre Ricardo Bechlin.pdf: 1893283 bytes, checksum: a7f2ccf93b5f041e48cad5f54ae2c859 (MD5)
Previous issue date: 2010-05-26This research is mainly aimed to assess from a multidimensional perspective that considers varying political, social, economic and technological integration of the stages of the Southern Common Market (MERCOSUR) in 1998 and 2008. The theoretical framework includes topics of the theory of regional economic integration; historical process of economic integration in Latin America; history of the formation process of MERCOSUR and its current situation. The methodology used was the Global Dimension of Regional Integration Model considering a total of 90 variables with 18 political, 16 social, 46 economic and technological 10. For each of the States Parties and Associates were calculated Global Regional Development Index and Regional Global Development, and through them we obtained the value for the Regional Integration Stage Index to the MERCOSUR, which is equal to 0.57037 in 1998 and 0.62222 in 2008, framing it as an integration process in development. Analyzing the indexes for each of the States Parties and Associates notes to uneven development between 1998 and 2008 Brazil showed a more than proportional growth in relation to other countries in all areas surveyed. The conclusion is that although the bloc's integration has improved, the effects obtained were not distributed equally among the countries given their heterogeneity.
Este trabalho tem como objetivo central avaliar a partir de uma perspectiva multidimensional que considera variáveis políticas, sociais, econômicas e tecnológicas, os estágios da integração do Mercado Comum do Sul (MERCOSUL) nos anos de 1998 e 2008. O referencial teórico compreende tópicos sobre a teoria da integração econômica regional; processo histórico da integração econômica na América Latina; histórico do processo de formação do MERCOSUL e sua situação atual. A metodologia utilizada foi o Modelo da Dimensão Global da Integração Regional considerando um total de 90 variáveis sendo 18 políticas, 16 sociais, 46 econômicas e 10 tecnológicas. Para cada um dos Estados Partes e Associados foram calculados o Índice Global de Desenvolvimento Regional e o Índice de Desenvolvimento Global Regional e, através destes obteve-se o valor referente ao Estágio de Integração Regional para o MERCOSUL, sendo este igual a 0,57037 em 1998 e a 0,62222 em 2008, enquadrando o mesmo como um processo integracionista em desenvolvimento. Analisando os índices para cada um dos Estados Partes e Associados constata-se um desenvolvimento desigual entre 1998 e 2008 apresentando o Brasil um crescimento mais que proporcional em relação aos demais países em todas as áreas analisadas. Conclui-se que embora a integração do bloco tenha apresentado avanços, os efeitos obtidos não se distribuíram de forma igualitária entre os países dada sua heterogeneidade.
2
LUCA, MARY. "Un modello multidimensionale integrato per il gambling. Costruzione e validazione del Cognitive Gambling Inventory (CGI)." Doctoral thesis, 2013. http://hdl.handle.net/2158/801473.
Full textAbstract:
Il presente lavoro indaga i principi teorici del gambling focalizzandosi su un modello multidimensionale integrato del gioco d’azzardo in cui sono presenti gli aspetti ricreativi, problematici e patologici del gambling. Dopo aver passato in rassegna i vari studi condotti sul gambling, questo lavoro si è focalizzato sulle modalità erronee di pensiero relative al gioco d’azzardo e sulla messa a punto del Cognitive Gambling Inventory (CGI): vengono qui valutate le proprietà psicometriche dei cluster e delle scale che costituiscono un nuovo strumento self-report per l’assessment di un’ampia gamma di distorsioni cognitive legate al gambling.
The paper postulates a conceptual model that attempts to integrate specific vulnerability factors, demographic features and aetiological processes associated with problem and pathological gambling. In view of the detrimental effects of Gambling Related Cognitions on gamblers and the lacks of instruments to assess them, the purpose of this study is to report on the development and psychometric properties of the Cognitive Gambling Inventory (CGI).
Books on the topic "Modello multidimensionale integrato"
1
Cohen, Mary Ann, James Bourgeois, Weston Fisher, and David Tran. How to Establish An Integrated Ambulatory Care Program Co-Located in An HIV Clinic. Edited by Mary Ann Cohen, Jack M. Gorman, Jeffrey M. Jacobson, Paul Volberding, and Scott Letendre. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199392742.003.0008.
Full textAbstract:
The pragmatic aspects of all steps involved in establishing an integrated psychiatry (and other mental health) care model in a HIV outpatient clinic are discussed in detail in this chapter. These include initial outreach inquiry, interdepartmental discussion, business case analysis, logistics in establishing clinical routines and operating relationships, utilization management, information technology, and research and educational opportunities specific to this model of collaborative care. The beneficial aspects of integrated care include increased engagement and retention in HIV care and decreased HIV morbidity and mortality. A biopsychosocial approach provides a model for compassionate and multidimensional care. Readers are encouraged to apply this framework within the parameters of their local institutions when establishing integrated psychiatric care models in HIV clinics.
2
McCarthy, Barry, and Lana M. Wald. Sexual Dysfunction and Couple Dysfunction. Edited by Erika Lawrence and Kieran T. Sullivan. Oxford University Press, 2014. http://dx.doi.org/10.1093/oxfordhb/9780199783267.013.006.
Full textAbstract:
Couple sex therapy is best understood as a subspecialty of couple therapy. Couple sex therapy may focus on problems in desire, pleasure, eroticism, and/or satisfaction. Although arousal and orgasm problems need to be carefully assessed and treated, problems related to desire represent the primary concern that brings couples to sex therapy. There is a great need for more research on sex therapy models, therapeutic processes, and outcome. The authors describe in detail the psychobiosocial model of assessment, treatment, and relapse prevention. A particularly important component is the four-session assessment, which features individual psychological, relational, and sexual histories. This comprehensive, multidimensional treatment model focuses on the use of psychosexual skill exercises practiced at home by the couple. Therapy interventions are directed at factors that subvert sexual desire and function as well as interventions to promote desire, pleasure, eroticism, and satisfaction. Clients are urged to develop a couple sexual style that balances each person’s sexual voice, thus becoming an intimate sexual team. The goal for all couples, straight or gay, married or unmarried, is to integrate intimacy and eroticism into their relationship. An individualized relapse prevention plan is also discussed as an integral component of comprehensive couple sex therapy.
Book chapters on the topic "Modello multidimensionale integrato"
1
Lübben, Sonja, Wolfgang Müskens, and Olaf Zawacki-Richter. "Quality of OER: Test Theoretical Development and Validation of an Assessment Tool." In Distributed Learning Ecosystems, 139–60. Wiesbaden: Springer Fachmedien Wiesbaden, 2023. http://dx.doi.org/10.1007/978-3-658-38703-7_8.
Full textAbstract:
AbstractDue to their dynamic development process, Open Educational Resources (OER) pose a special challenge regarding quality assurance. While there are many approaches to developing procedures for quality assurance, there is still a lack of suitable instruments to measure the quality of OER. Zawacki-Richter and Mayrberger (2017) integrated seven internationally used instruments for measuring the quality of OER into a comprehensive quality model for OER in higher education. Quality of OER is understood as a multidimensional construct within this model. The model formed the basis for the Instrument for Quality Assurance of OER (IQOER). The article reports on the empirical validation of the German version of this instrument. The validation included the analysis of interrater reliabilities, internal consistencies, and an estimation of construct validity operationalised as convergent validity with the MERLOT Peer Reviewer Report Form (California State University 2019). Furthermore, the particular importance of quality assurance of OER within distributed learning ecosystems is discussed. It is argued that to ensure the quality of OER, three conditions must be met: there must be practicable procedures for measuring quality; reliable and valid instruments for measuring quality must be used; and finally, the results of the quality measurement must be communicated to the users of the OER.
2
Zavarrone, Emma, Maria Gabriella Grassia, Rocco Mazza, and Alessia Forciniti. "Emergency remote teaching: an explorative tool." In Proceedings e report, 61–66. Florence: Firenze University Press, 2021. http://dx.doi.org/10.36253/978-88-5518-461-8.12.
Full textAbstract:
The worldwide rapid spread and severity of the infectious disease caused by Coronavirus forced the WHO to declare a global state of pandemic emergency during March 2020, by leading the governments around the world to adopt policies that created the widest rift of education systems in human history. Italy have temporarily closed each educational institution, by causing the disruption of tertiary education for 16.89% of the Italian learner’s population. To ensure the “pedagogic continuity”, universities adopted the transitioning from traditional face-to-face to online learning. This paradigm shift to fully remote teaching solutions represents the so-called emergency remote teaching (ERT) in contrast to the traditional teaching inspired by Bologna process principles such as teaching quality and student satisfaction. In a landscape of emerging difficulties connected to ERT contexts, the quality assurance of higher education recalled by the Bologna Process may be not appropriate. We propose an evaluation model for the quality and ERT success across two dimensions used as proxy variables: students’ engagement (SE) and success performance (SP). Within the faculties, we analysed the performance and hence the knowledge, skills and/or attitudes acquired by learners, within the students, the focus was the engagement as interest, motivation and involvement. Under this perspective our research question has an explorative nature: we are interested in detecting empirical evidence about the learning assessment and engagement in higher education with focus on students’ engagement and their success performance during ERT. The investigation carried out on Iulm University’s student population (N=775). We integrated textual data related to the students evaluation of ERT and their career data such as credits, marks before and post disease. The results show the relations between the two dimensions taken into account, with a multidimensional approach we created a factorial plan useful to create an agile tool of analysis in the ERT context.
3
Bimonte, Sandro, Marlène Villanova-Oliver, and Jerome Gensel. "A Multidimensional Model for Correct Aggregation of Geographic Measures." In Evolving Application Domains of Data Warehousing and Mining, 162–83. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-60566-816-1.ch008.
Full textAbstract:
Spatial OLAP refers to the integration of spatial data in multidimensional applications at physical, logical and conceptual levels. The multidimensional aggregation of geographic objects (geographic measures) exhibits theoretical and implementation problems. In this chapter, the authors present a panorama of aggregation issues in multidimensional, geostatistic, GIS and Spatial OLAP models. Then, they illustrate how overlapping geometries and dependency of spatial and alphanumeric aggregation are necessary for correctly aggregating geographic measures. Consequently, they present an extension of the logical multidimensional model GeoCube (Bimonte et al., 2006) to deal with these issues.
4
Bimonte, Sandro, Marlène Villanova-Oliver, and Jerome Gensel. "A Multidimensional Model for Correct Aggregation of Geographic Measures." In Geographic Information Systems, 377–98. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2038-4.ch023.
Full textAbstract:
Spatial OLAP refers to the integration of spatial data in multidimensional applications at physical, logical and conceptual levels. The multidimensional aggregation of geographic objects (geographic measures) exhibits theoretical and implementation problems. In this chapter, the authors present a panorama of aggregation issues in multidimensional, geostatistic, GIS and Spatial OLAP models. Then, they illustrate how overlapping geometries and dependency of spatial and alphanumeric aggregation are necessary for correctly aggregating geographic measures. Consequently, they present an extension of the logical multidimensional model GeoCube (Bimonte et al., 2006) to deal with these issues.
5
Bimonte, Sandro. "On Modeling and Analysis of Multidimensional Geographic Databases." In Geographic Information Systems, 91–107. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2038-4.ch009.
Full textAbstract:
Data warehouse and OLAP systems are tools to support decision-making. Geographic information systems (GISs) allow memorizing, analyzing and visualizing geographic data. In order to exploit the complex nature of geographic data, a new kind of decision support system has been developed: spatial OLAP (SOLAP). Spatial OLAP redefines main OLAP concepts: dimension, measure and multidimensional operators. SOLAP systems integrate OLAP and GIS functionalities into a unique interactive and flexible framework. Several research tools have been proposed to explore and the analyze spatio-multidimensional databases. This chapter presents a panorama of SOLAP models and an analytical review of research SOLAP tools. Moreover, the authors describe their Web-based system: GeWOlap. GeWOlap is an OLAP-GIS integrated solution implementing drill and cut spatio-multidimensional operators, and it supports some new spatio-multidimensional operators which change dynamically the structure of the spatial hypercube thanks to spatial analysis operators.
6
Tininini, Leonardo. "Querying Multidimensional Data." In Multidimensional Databases, 252–81. IGI Global, 2003. http://dx.doi.org/10.4018/978-1-59140-053-0.ch009.
Full textAbstract:
A powerful and easy-to-use querying environment is certainly one of the most important components in a multidimensional database, and its effectiveness is influenced by many other aspects, both logical (data model, integration, policy of view materialization, etc.) and physical (multidimensional or relational storage, indexes, etc.). As is evident, multidimensional querying is often based on the metaphor of the data cube and on the concepts of facts, measures, and dimensions. In contrast to conventional transactional environments, multidimensional querying is often an exploratory process, performed by navigating along the dimensions and measures, increasing/decreasing the level of detail and focusing on specific subparts of the cube that appear to be “promising” for the required information. In this chapter we focus on the main languages proposed in the literature to express multidimensional queries, particularly those based on: (i) an algebraic approach, (ii) a declarative paradigm (calculus), and (iii) visual constructs and syntax. We analyze the problem of evaluation, i.e., the issues related to the efficient data retrieval and calculation, possibly (often necessarily) using some pre-computed data, a problem known in the literature as the problem of rewriting a query using views. We also illustrate the use of particular index structures to speed up the query evaluation process.
7
Tininini, Leonardo. "Querying Multidimensional Data." In Encyclopedia of Information Science and Technology, First Edition, 2392–96. IGI Global, 2005. http://dx.doi.org/10.4018/978-1-59140-553-5.ch423.
Full textAbstract:
A powerful, easy-to-use querying environment is without doubt one of the most important components in a multidimensional database. Its effectiveness is influenced by many aspects, both logical (data model, integration, policy of view materialization, etc.) and physical (multidimensional or relational storage, indexes, etc.). Multidimensional querying is often based on the core concepts of multidimensional data modeling, namely the metaphor of the data cube and the concepts of facts, measures and dimensions (Agrawal, Gupta, & Sarawagi, 1997; Gyssens & Lakshmanan, 1997). In contrast to conventional transactional environments, multidimensional querying is often an exploratory process, performed by navigating along dimensions and measures, increasing/decreasing the level of detail and focusing on specific subparts of the cube that appear “promising” for the required information.
8
Prochaska, James O., and Carlo C. DiClemente. "The Transtheoretical Approach." In Handbook of Psychotherapy Integration, edited by John C. Norcross and Marvin R. Goldfried, 161–83. Oxford University Press, 2019. http://dx.doi.org/10.1093/med-psych/9780190690465.003.0008.
Full textAbstract:
The transtheoretical model outlines important dimensions of intentional behavior change from an integrative perspective. Stages describe the motivational and temporal dimension and the critical multidimensional tasks involved in creating sustained change. Processes are an eclectic set of cognitive/experiential and behavioral coping activities that act as mechanisms or engines of change that drive completion of stage tasks. The chapter summarizes the origins of the approach, its applicability and structure, therapeutic relationship, and diversity considerations. A case example illustrates its assessment and treatment foundations. The transtheoretical approach has demonstrated utility in tailoring treatment and predicting outcomes across a variety of health, mental health, and addictive behaviors.
9
Bimonte, Sandro, Omar Boucelma, Olivier Machabert, and Sana Sellami. "A Generic Spatial OLAP Model for Evaluating Natural Hazards in a Volunteered Geographic Information Context." In Geospatial Research, 485–501. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9845-1.ch021.
Full textAbstract:
Spatial data warehouses (SDW) and spatial OLAP (SOLAP) systems are well-known business intelligence technologies that aim to support a multidimensional and online analysis for a large volume of geo-referenced datasets. SOLAP systems are already used in the context of natural hazards for analyzing sensor data and experts' measurements. Recently, new data gathering tools coined as volunteered geographic information systems (VGI) have been adopted especially by non-expert users. Hence, (spatial) application development is facing a new challenge, which is the integration of expert-oriented data with citizen-provided data. In this paper, we propose a new generic spatio-multidimensional model based on the question/answer risk evaluation model that allows the integration of VGI data with classical SDW and SOLAP systems for the online analysis of natural hazards monitored by volunteers.
10
Edoh-Alove, Elodie, Sandro Bimonte, François Pinet, and Yvan Bédard. "New Design Approach to Handle Spatial Vagueness in Spatial OLAP Datacubes." In Geospatial Research, 1859–80. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9845-1.ch089.
Full textAbstract:
Spatial-OLAP (SOLAP) technologies are dedicated to multidimensional analysis of large volumes of (spatial) data. Spatial data are subject to different types of uncertainty, in particular spatial vagueness. Although several researches propose new models to cope with spatial vagueness, their integration in SOLAP systems is still in an embryonic state. Also, analyzing multidimensional data with metadata brought by the exploitation of the new models can be too complex and demanding for decision-makers. To help reduce spatial vagueness consequences on the exactness of SOLAP analysis queries, the authors present a new approach for designing SOLAP datacubes based on end-users' tolerance to the risks of misinterpretation of fact data. An experimentation of the new approach on agri-environmental data is also proposed.
Conference papers on the topic "Modello multidimensionale integrato"
1
Hu, Tiejun, and Won-Jong Kim. "Modeling and Multivariable Control of a High Precision Multidimensional Positioner." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59536.
Full textAbstract:
A precision positioner using a novel concentrated-field permanent-magnet matrix is presented in this paper. This integrated multidimensional positioner is actuated by three novel planar motors, which are attached on the bottom of the positioner. It can generate all 6-DOF motions with only a single moving part. The integrated multi-dimensional positioner offers a unique combination of range and precision: a planar traveling range of 160 mm × 160 mm with a position resolution of 30 nm and position noise of 10 nm rms. The repeatability of the positioner is as good as 30 nm. The maximum velocity achieved so far is 0.5 m/s with 5-m/s2 acceleration. With direct-quadrature (DQ) decomposition theory, the positioner is modelled as a multi-input multi-output (MIMO) electromagnetic system: it has six inputs (currents) and six outputs (displacements). After the state-space model of the system is derived, multivariable controllers are designed for this high-precision positioner. To eliminate the steady-state error, discrete time integrator combined Linear Quadratic Regulation (LQR) and reduced order Linear Quadratic Gaussian (LQG) control methodologies are applied and implemented. Finally, the experimental results are presented in this paper. Several experimental results verified the utility of this positioner in precision applications, such as semiconductor manufacturing.
2
Rasulov, Abdujabar, Matyokub Bakoev, and Makhmadrasul Rakhmatov. "Quasi random sequences for calculation multidimensional integrals and parallel algorithms." In INTERNATIONAL UZBEKISTAN-MALAYSIA CONFERENCE ON “COMPUTATIONAL MODELS AND TECHNOLOGIES (CMT2020)”: CMT2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0057008.
Full text
3
Simão, Marina Leivas, Paulo Maurício Videiro, Mauro Costa de Oliveira, and Luis Volnei Sudati Sagrilo. "An Efficient Importance Sampling Method for the Long-Term Mooring Lines Response Estimation Considering Wind Sea and Swell." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18175.
Full textAbstract:
Abstract Escalating demand in the oil and gas industry has led offshore structures to be installed in ever deeper waters and under severe environmental conditions. As the mooring system is a crucial element in floating offshore structures, a reliable estimation of its long-term response is a decisive step in any usual design procedure. In the long-term scenario, the environmental actions to which these structures are subjected to, such as waves, wind and current, are non-stationary processes. However, this long-term behavior is usually modeled as a series of short-term stationary conditions (typically 3-h). In a full long-term analysis approach, an estimate of the long-term N-year response can be obtained through a multidimensional integration over all these short-term environmental conditions. In this paper, this multidimensional integral is numerically evaluated by means of the Importance Sampling Monte Carlo Simulation (ISMCS) method, where the uniform distribution is used as the sampling function. Thus, all short-term environmental conditions have the same probability of being sampled, which assures that conditions with very low original probability of occurrence, but with knowingly higher contributions to the long-term response, are efficiently accounted for. The random variability of the short-term environmental parameters and their interdependencies are represented by a simplified joint probabilistic model which comprehends both wind sea and swell waves. The methodology is numerically validated for an idealized single-degree-of-freedom (SDOF) model and later investigated for a mooring line connected to an FPSO installed in Brazilian deep waters. It is shown that ISMCS provides good estimates for the long-term N-year response with a moderate amount of required simulations and can be a powerful tool in order to account for simultaneous occurrence of wind sea and swell waves in structural response evaluations.
4
Ramírez Gutiérrez, Julián Adolfo. "Pertinencia de los programas de ingeniería desde los requerimientos gubernamentales." In Nuevas realidades para la educación en ingeniería: currículo, tecnología, medio ambiente y desarrollo. Asociación Colombiana de Facultades de Ingeniería - ACOFI, 2022. http://dx.doi.org/10.26507/paper.2646.
Full textAbstract:
La calidad y pertinencia poseen una condición de ambigüedad al ser conceptos no completamente acabados que poseen diferentes valoraciones que dependerán del contexto y del grupo de interés que los valore. La ambigüedad genera la tendencia de una visión de calidad y pertinencia desde criterios principalmente utilitarios, en una sociedad del conocimiento donde el conocimiento es una nueva forma de capital dado su valor de cambio. En este sentido la universidad se debate entre: “la universidad de masas o la universidad de la investigación de calidad”, “la universidad para todos o para los que tienen las condiciones que exige su modelo”. Las tensiones y complejidades derivadas del análisis de la pertinencia reflejan “Una identidad esquizoide” producto de la exigencia de adaptabilidad de un contexto postmoderno de creciente diversidad multidimensional donde los intereses externos de sociedad, gobierno y comunidades entre otros engendran presiones como los modelos de acreditación o estandarización donde priman los fines utilitarios de la institución universitaria, los cuales son válidos pero no deben anular a la universidad como el lugar que integra además otros fines como la ampliación del conocimiento, la construcción de tejido social entre otros que deben ser establecidos claramente por la institución. Como alternativa para balancear las tenciones derivadas de los procesos de mejoramiento de la calidad y el concepto de pertinencia surge el concepto ampliado de “La pertinencia integral” definida desde dos dimensiones: la interna y la externa, como alternativa para conciliar algunos de los elementos conflictivos y contradictorios presentes entre las nociones de calidad y pertinencia de la educación superior. Los resultados de una evaluación cualitativa, del concepto de pertinencia integral en contraste con la reglamentación nacional exigida para la renovación y obtención de los registros calificados, y el proceso de acreditación de programas de formación en ingeniería, desde un enfoque integral implica responder como mínimo: ¿Cuál es la oferta a la cual la institución está comprometida?, ¿Qué oferta contribuye al desarrollo cultural, científico, social del país o la región?, ¿En qué oferta existe una necesidad de talento humano? Y diferenciar las apreciaciones a estas preguntas en torno a: la viabilidad técnica y científica, la viabilidad logística y la calidad de los procesos de enseñanza. Siendo el óptimo de pertinencia, la oferta en donde además de ser viable es la respuesta a las preguntas anteriormente planteadas.
5
Wang, Mingxian, Wei Chen, Yun Huang, Noshir S. Contractor, and Yan Fu. "A Multidimensional Network Approach for Modeling Customer-Product Relations in Engineering Design." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46764.
Full textAbstract:
Analytical modeling of customer preferences in product design is inherently difficult as it faces challenges in modeling heterogeneous human behavior and product offerings. In this paper, the customer-product interactions are viewed as a complex socio-technical system and analyzed using social network theory and techniques. We propose a Multidimensional Customer-Product Network (MCPN) framework, where separate networks of “customers” and “products” are simultaneously modeled, and multiple types of relations, such as consideration and purchase, product associations, and customer social networks are considered. We start with the simplest unimodal network configuration where customer cross-shopping behaviors and product similarities are analyzed to inform designers about the implied product competition, market segmentation, and product positions in the market. We then progressively extend the network to a multidimensional structure that integrates customer preference decisions with product feature similarities to enable the modeling of preference heterogeneity, product association and decision dependency. Finally, social influences on new product adoption are analyzed in the same framework by introducing customer-customer relations together with other product-product and customer-product relations. Beyond the traditional network descriptive analysis, we employ the Exponential Random Graph Model (ERGM) as a unified statistical inference framework for analyzing multiple relations in MCPN to support engineering design decisions. Our approach broadens the traditional utility-based logit approaches by considering the dependency among product choices and the “irrationality” of customer behavior induced by social influence. While this paper is focused on presenting the conceptual framework of the proposed methodology, examples on customer vehicle preferences are presented to illustrate the progressive development of the MCPN framework from a simple unimodal configuration to a complex multidimensional structure.
6
Colunga Flores, Leopoldo Alejandro. "La expansión urbana del municipio de Tlajomulco de Zuñiga." In International Conference Virtual City and Territory. Barcelona: Centre de Política de Sòl i Valoracions, 2009. http://dx.doi.org/10.5821/ctv.7542.
Full textAbstract:
A comienzos de la segunda mitad del siglo pasado, las ciudades centrales del México comenzaron a sufrir un proceso constante de crecimiento e integración de sus comunidades aledañas, proceso que se ha definido como metropolización. Guadalajara, como segunda ciudad más importante del país es,
obviamente parte de dicho fenómeno. Esto se agudiza, especialmente a partir de la crisis de los ochentas, lo que ha permitido una estructura territorial caracterizada por la desigualdad regional, concentración
metropolitana, expansión urbana anárquica, desigual distribución de las infraestructuras, entre otros fenómenos asociados. Esta situación se ve acentuada aún más, por los impactos devengados en el
proceso de Globalización, mismo que ha cambiado la manera, ya no sólo de cómo se concibe, sino también cómo se estructura la ciudad. Estudiar un fenómeno de apariencia tan compleja puede ser muy difícil; es por ello que en este documento se considera analizar la evolución que ha presentado el uso del suelo a partir de la explosión demográfica previa de la Zona Metropolitana de Guadalajara y el periodo reciente, particularmente en el municipio de Tlajomulco de Zúñiga para, de manera inductiva, generar un modelo explicativo de la situación presente y, así, poder comprender mejor la expansión urbana de las
zonas metropolitanas mexicanas. Lo anterior se pretende lograr a través de la investigación documental teórica de modelos previos realizados por otros investigadores en el área, así como el uso de Sistemas de
Información Geográfica, generadas en el Instituto Nacional de Geografía e Informática (INEGI), así como
otras instituciones gubernamentales nacionales.
Después de la integración teórica y el análisis de los datos agregados disponibles se ha generado un modelo teórico general inicial que ha develado una ciudad integral, compuesta por tres dimensiones esenciales, a saber, sociales, económicas y políticas, propiciadas por el entorno internacional,
fundamentalmente económico. Asimismo, la ciudad debe ser interpretada, con base en un referente histórico, compuesta y modificada por la tecnología, para poder explicar la expansión urbana como un fenómeno multidimensional y en constante cambio, por lo que no se habla de modalidades de desarrollo, sino de estadios de desarrollo. *** ENG: Early in the second half of last century, the cities of central Mexico began to undergo a constant process of growth and integration of their surrounding communities, a process that has been defined as metropolización. Guadalajara, the second largest city in the country is obviously part of that phenomenon.
This is more acute, especially after the crisis of the eighties, which allowed a spatial structure characterized by the uneven regional, metropolitan concentration, uncontrolled urban growth, unequal
distribution of infrastructure, among other phenomena associated. This situation is exacerbated further by the effects due to the process of globalization, which has changed the way, not only of how they conceive, but also how to structure the city. Studying a phenomenon as complex appearance can be very difficult, and so in this document is considered to analyze the developments that have submitted land use from the previous boom in the Metropolitan Zone of Guadalajara and the recent period, particularly in the town ofTlajomulco de Zúñiga to, so inductively generate a model explaining the situation and thus better
understand the urban sprawl of the metropolitan areas of Mexico. It seeks to achieve through the desk research prior theoretical models by other researchers in the field, and the use of Geographic Information Systems, created the National Institute of Geography and Informatics (INEGI), and other institutions
national government.
After integration and theoretical analysis of aggregate data available there is a general theoretical model that initial city has unveiled a comprehensive, consisting of three key dimensions, namely social, economic
and political, provided by the international environment, primarily economic. Also, the city should be interpreted, based on a historical reference, made and modified by technology, to explain urban sprawl as
a multidimensional phenomenon and constantly changing, so do not talk about development patterns, but stages of development.
7
Li, Shengqiang, Yin Xiong, Yalei Hao, Hongyu Zhu, and Shengyao Jiang. "Studies on Source Effect in Experimental Design for Passive Cooling in Large Cavities Under LOCA conditions." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-15139.
Full textAbstract:
In recent years, most of the advanced Pressurize Water Reactor (PWR) design contains passive cooling features, especially for the containments, which are functioning as the final radioactive emission barriers. To evaluate the best estimation codes for containment design, large scale thermo-hydraulic experimental facilities will be necessary for Code Verification and validation (V&V). Normally, the multi-phase jet is the main source for containment thermo-hydraulic processes under Loss of Coolant Accident (LOCA) conditions. This paper presents the scaling studies of source effects in large cavity experiment facility design. The similarity in core safety features, such as cavity temperature and pressure, is preserved firstly in the scaling and some dominant design parameters are given. Some primary design features are decided. The jet mass flow rate and heat sink surface ratios are provided for the prevailing parameters for system transient simulation. Based on mass and energy conservative equations, the parameters ratio for jet mass flow rate, jet time scale, jet integral energy, break size and expansion structures size are determined. Furthermore, some transient multidimensional phenomena are also considered. A novel six regions hierarchical model is similarly provided specially for cavity space scaling. The interaction between jet and space natural circulation was modeled. The local heat and mass transfer simulation and system level evaluation are coherence in the experimental design. Based on the preceding results, estimation for distortion on experiments can also be made to evaluate the experimental data deviations from prototype design.
8
Carrington, David B., and Vincent A. Mousseau. "Preconditioning and Solver Optimization Ideas for Radiative Transfer." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72040.
Full textAbstract:
In this paper, radiative transfer and time-dependent transport of radiation energy in participating media are modeled using a first-order spherical harmonics method (P1) and radiation diffusion. Partial differential equations for P1 and radiation diffusion are discretized by a variational form of the equations using support operators. Choices made in the discretization result in a symmetric positive definite (SPD) system of linear equations. Modeling multidimensional domains with complex geometries requires a very large system of linear equations with 10s of millions of elements. The computational domain is decomposed into a large number of subdomains that are solved on separate processors resulting in a massively parallel application. The linear system of equations is solved with a preconditioned conjugate gradient method. Various preconditioning techniques are compared in this study. Simple preconditioning techniques include: diagonal scaling, Symmetric Successive Over Relaxation (SSOR), and block Jacobi with SSOR as the block solver. Also, a two-grid multigrid-V-cycle method with aggressive coarsening is explored for use in the problems presented. Results show that depending on the test problem, simple preconditioners are effective, but the more complicated preconditioners such as an algebraic multigrid or the geometric multigrid are most efficient, particularly for larger problems and longer simulations. Optimal preconditioning varies depending on the problem and on how the physical processes evolve in time. For the insitu preconditioning techniques—SSOR and block Jacobi—a fuzzy controller can determine the optimal reconditioning process. Discussions of the current knowledge-based controller, an optimization search algorithm, are presented. Discussions of how this search algorithm can be incorporated into the development of data-driven controller incorporating clustering and subsequent construction of the fuzzy model from partitions are also discussed.
9
Stosic, Zoran V., and Vladimir D. Stevanovic. "Three-Dimensional Numerical Simulation of Burnout on Horizontal Surface in Pool Boiling." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45521.
Full textAbstract:
Prediction of nucleate boiling mechanisms and burnout conditions, when heat transfer coefficient sharply drops and the heating surface destruction could occur are one of the crucial topics in thermal design and safety analyses of various thermal equipment. Although these phenomena have been intensively investigated for decades, various influencing factors and complexity of coupled thermal and fluid dynamic processes have not yet been fully understood. The integral approach towards prediction of nucleate boiling and burnout conditions requires modelling and numerical simulation of micro level phenomena of bubble rise and departure at a numbers of nucleation sites, as well as macroscopic two-phase mixture behaviour on the heating surface. In this paper multidimensional numerical simulation of the atmospheric saturated pool boiling is performed under high heat fluxes, near to and at the occurrence of burnout conditions. Micro level phenomena on the heating surface are modelled with the key parameters of vapour generation on the heating wall, such as bubble nucleation site density, bubble residence time on the heating wall and certain level of randomness in the location of bubble nucleation. Heat flux is non-uniformly distributed on the heating surface with peaks at the nucleation sites. The nucleation sites are determined by a random function, while the mean number of nucleation sites is prescribed according to the material characteristics and roughness of the heating surface. The applied numerical grids are able to represent the nucleation sites on the heating wall for both fresh (polished) and aged (rough) heaters at the atmospheric pool boiling conditions. The macro level phenomena are modelled with two-fluid model of liquid-vapour flow. The interfacial drag is modelled with appropriate closure laws. The applied modelling and numerical methods enable full representation of the two-phase mixture behaviour on the heating surface with inclusion of the swell level prediction. In this way the integral conditions of nucleate pool boiling with the possibility of burnout are simulated and the critical heat flux conditions are predicted. The result of the three-dimensional numerical simulations and analyses are presented as the extension of the previously published two-dimensional numerical results. Here presented three-dimensional investigation is performed in order to take into account more realistically spatial effects of vapour generation and two-phase flow, such as phase dispersion within the two-phase mixture, than it was able with previously performed two-dimensional investigation. Results are presented for short time period after the initiation of heat supply and vapour generation on the heating surface, as well as for quasi steady-state conditions after several seconds from pool boiling initiation. A replenishment of the heating surface with water and partial surface wetting for lower heat fluxes is shown, while heating surface dry-out is observed for high heat fluxes. The influence of the density of nucleation sites and the bubble residence time on the wall on the pool boiling dynamics is investigated. Also, the influence of the heat flux intensity on the pool boiling dynamics is analysed. Numerical simulations show that decrease of the density of nucleation sites and increase of bubble residence time on the heating surface (characteristics pertinent to fresh-polished heaters) lead to the reduction of critical heat flux values. Obtained results are in excellent agreement with the recent experimental investigations of the upward facing burnout conditions on the horizontal heated plate. Details of the developed numerical procedure are presented. The introduced method of random spatial and temporal generation of the vapour at the heated wall is a new approach. It enables the macroscopic representation of the population of microscopic vapour bubbles, which are generated at nucleation sites on the heater wall, and which burst through liquid micro-layer in thermal-hydraulic conditions close to the burnout. The applied numerical and modelling method has shown robustness by allowing stable calculations for wide ranges of applied modelling boiling parameters (density of nucleation sites and bubble residence time).
Reports on the topic "Modello multidimensionale integrato"
1
Brasil, André. Multidimensionality through self-evaluation: From theory to practice in the Brazilian graduate system. Fteval - Austrian Platform for Research and Technology Policy Evaluation, April 2022. http://dx.doi.org/10.22163/fteval.2022.546.
Full textAbstract:
Nearly all science and technology research in Brazil is conducted within a national system of graduate education. Since the 1970s, a graduate program assessment has been an integral part of such a system, and it is currently held on a quadrennial basis. The evaluation model is dynamic, evolving from the experiences of evaluators, policymakers, and the scientific community during each four-year cycle. This study analyses policy initiatives from the 2017-2021 evolving effort, focusing on strategies and recommendations to implement multidimensionality and self-evaluation as integral components of Brazilian evaluation. The paper traces how the idea for a multidimensional assessment was introduced in the country and how U-Multirank, an international ranking of higher education institutions (HEI), has come to inspire an evaluation that is not institutional but of graduate programs instead. The study identified some benefits and limitations of the chosen inspiration and analysed how the Brazilian proposal aligned with the U-Multirank principles. Furthermore, the investigation shows there is little concrete difference from the proposed new model to the one Brazil has already in place. Finally, the last section of this study looks into the once pivotal idea to pursue a self-evaluation component, now relegated to a minor role in the model, but that could be raised to a position supporting the design of an actual multidimensional assessment model.
2
Rojas-Bernal, Alejandro, and Mauricio Villamizar-Villegas. Pricing the exotic: Path-dependent American options with stochastic barriers. Banco de la República de Colombia, March 2021. http://dx.doi.org/10.32468/be.1156.
Full textAbstract:
We develop a novel pricing strategy that approximates the value of an American option with exotic features through a portfolio of European options with different maturities. Among our findings, we show that: (i) our model is numerically robust in pricing plain vanilla American options; (ii) the model matches observed bids and premiums of multidimensional options that integrate Ratchet, Asian, and Barrier characteristics; and (iii) our closed-form approximation allows for an analytical solution of the option’s greeks, which characterize the sensitivity to various risk factors. Finally, we highlight that our estimation requires less than 1% of the computational time compared to other standard methods, such as Monte Carlo simulations.
3
Daudelin, Francois, Lina Taing, Lucy Chen, Claudia Abreu Lopes, Adeniyi Francis Fagbamigbe, and Hamid Mehmood. Mapping WASH-related disease risk: A review of risk concepts and methods. United Nations University Institute for Water, Environment and Health, December 2021. http://dx.doi.org/10.53328/uxuo4751.
Full textAbstract:
The report provides a review of how risk is conceived of, modelled, and mapped in studies of infectious water, sanitation, and hygiene (WASH) related diseases. It focuses on spatial epidemiology of cholera, malaria and dengue to offer recommendations for the field of WASH-related disease risk mapping. The report notes a lack of consensus on the definition of disease risk in the literature, which limits the interpretability of the resulting analyses and could affect the quality of the design and direction of public health interventions. In addition, existing risk frameworks that consider disease incidence separately from community vulnerability have conceptual overlap in their components and conflate the probability and severity of disease risk into a single component. The report identifies four methods used to develop risk maps, i) observational, ii) index-based, iii) associative modelling and iv) mechanistic modelling. Observational methods are limited by a lack of historical data sets and their assumption that historical outcomes are representative of current and future risks. The more general index-based methods offer a highly flexible approach based on observed and modelled risks and can be used for partially qualitative or difficult-to-measure indicators, such as socioeconomic vulnerability. For multidimensional risk measures, indices representing different dimensions can be aggregated to form a composite index or be considered jointly without aggregation. The latter approach can distinguish between different types of disease risk such as outbreaks of high frequency/low intensity and low frequency/high intensity. Associative models, including machine learning and artificial intelligence (AI), are commonly used to measure current risk, future risk (short-term for early warning systems) or risk in areas with low data availability, but concerns about bias, privacy, trust, and accountability in algorithms can limit their application. In addition, they typically do not account for gender and demographic variables that allow risk analyses for different vulnerable groups. As an alternative, mechanistic models can be used for similar purposes as well as to create spatial measures of disease transmission efficiency or to model risk outcomes from hypothetical scenarios. Mechanistic models, however, are limited by their inability to capture locally specific transmission dynamics. The report recommends that future WASH-related disease risk mapping research: - Conceptualise risk as a function of the probability and severity of a disease risk event. Probability and severity can be disaggregated into sub-components. For outbreak-prone diseases, probability can be represented by a likelihood component while severity can be disaggregated into transmission and sensitivity sub-components, where sensitivity represents factors affecting health and socioeconomic outcomes of infection. -Employ jointly considered unaggregated indices to map multidimensional risk. Individual indices representing multiple dimensions of risk should be developed using a range of methods to take advantage of their relative strengths. -Develop and apply collaborative approaches with public health officials, development organizations and relevant stakeholders to identify appropriate interventions and priority levels for different types of risk, while ensuring the needs and values of users are met in an ethical and socially responsible manner. -Enhance identification of vulnerable populations by further disaggregating risk estimates and accounting for demographic and behavioural variables and using novel data sources such as big data and citizen science. This review is the first to focus solely on WASH-related disease risk mapping and modelling. The recommendations can be used as a guide for developing spatial epidemiology models in tandem with public health officials and to help detect and develop tailored responses to WASH-related disease outbreaks that meet the needs of vulnerable populations. The report’s main target audience is modellers, public health authorities and partners responsible for co-designing and implementing multi-sectoral health interventions, with a particular emphasis on facilitating the integration of health and WASH services delivery contributing to Sustainable Development Goals (SDG) 3 (good health and well-being) and 6 (clean water and sanitation).
4
Sett, Dominic, Florian Waldschmidt, Alvaro Rojas-Ferreira, Saut Sagala, Teresa Arce Mojica, Preeti Koirala, Patrick Sanady, et al. Climate and disaster risk analytics tool for adaptive social protection. United Nations University - Institute for Environment and Human Security, March 2022. http://dx.doi.org/10.53324/wnsg2302.
Full textAbstract:
Adaptive Social Protection (ASP) as discussed in this report is an approach to enhance the well-being of communities at risk. As an integrated approach, ASP builds on the interface of Disaster Risk Management (DRM), Climate Change Adaptation (CCA) and Social Protection (SP) to address interconnected risks by building resilience, thereby overcoming the shortcomings of traditionally sectoral approaches. The design of meaningful ASP measures needs to be informed by specific information on risk, risk drivers and impacts on communities at risk. In contrast, a limited understanding of risk and its drivers can potentially lead to maladaptation practices. Therefore, multidimensional risk assessments are vital for the successful implementation of ASP. Although many sectoral tools to assess risks exist, available integrated risk assessment methods across sectors are still inadequate in the context of ASP, presenting an important research and implementation gap. ASP is now gaining international momentum, making the timely development of a comprehensive risk analytics tool even more important, including in Indonesia, where nationwide implementation of ASP is currently under way. OBJECTIVE: To address this gap, this study explores the feasibility of a climate and disaster risk analytics tool for ASP (CADRAT-ASP), combining sectoral risk assessment in the context of ASP with a more comprehensive risk analytics approach. Risk analytics improve the understanding of risks by locating and quantifying the potential impacts of disasters. For example, the Economics of Climate Adaptation (ECA) framework quantifies probable current and expected future impacts of extreme events and determines the monetary cost and benefits of specific risk management and adaptation measures. Using the ECA framework, this report examines the viability and practicality of applying a quantitative risk analytics approach for non-financial and non-tangible assets that were identified as central to ASP. This quantitative approach helps to identify cost-effective interventions to support risk-informed decision making for ASP. Therefore, we used Nusa Tenggara, Indonesia, as a case study, to identify potential entry points and examples for the further development and application of such an approach. METHODS & RESULTS: The report presents an analysis of central risks and related impacts on communities in the context of ASP. In addition, central social protection dimensions (SPD) necessary for the successful implementation of ASP and respective data needs from a theoretical perspective are identified. The application of the quantitative ECA framework is tested for tropical storms in the context of ASP, providing an operational perspective on technical feasibility. Finally, recommendations on further research for the potential application of a suitable ASP risk analytics tool in Indonesia are proposed. Results show that the ECA framework and its quantitative modelling platform CLIMADA successfully quantified the impact of tropical storms on four SPDs. These SPDs (income, access to health, access to education and mobility) were selected based on the results from the Hazard, Exposure and Vulnerability Assessment (HEVA) conducted to support the development of an ASP roadmap for the Republic of Indonesia (UNU-EHS 2022, forthcoming). The SPDs were modelled using remote sensing, gridded data and available global indices. The results illustrate the value of the outcome to inform decision making and a better allocation of resources to deliver ASP to the case study area. RECOMMENDATIONS: This report highlights strong potential for the application of the ECA framework in the ASP context. The impact of extreme weather events on four social protection dimensions, ranging from access to health care and income to education and mobility, were successfully quantified. In addition, further developments of CADRAT-ASP can be envisaged to improve modelling results and uptake of this tool in ASP implementation. Recommendations are provided for four central themes: mainstreaming the CADRAT approach into ASP, data and information needs for the application of CADRAT-ASP, methodological advancements of the ECA framework to support ASP and use of CADRAT-ASP for improved resilience-building. Specific recommendations are given, including the integration of additional hazards, such as flood, drought or heatwaves, for a more comprehensive outlook on potential risks. This would provide a broader overview and allow for multi-hazard risk planning. In addition, high-resolution local data and stakeholder involvement can increase both ownership and the relevance of SPDs. Further recommendations include the development of a database and the inclusion of climate and socioeconomic scenarios in analyses.