Academic literature on the topic 'Big Rip'
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 'Big Rip.'
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 "Big Rip"
1
Holmes, Su. "Big Brother RIP." Celebrity Studies 2, no. 2 (2011): 214–17. http://dx.doi.org/10.1080/19392397.2011.574875.
Full text
2
CHIMENTO, L. P., and RUTH LAZKOZ. "ON BIG RIP SINGULARITIES." Modern Physics Letters A 19, no. 33 (2004): 2479–84. http://dx.doi.org/10.1142/s0217732304015646.
Full textAbstract:
Here we discuss big rip singularities occurring in typical phantom models by violation of the weak energy condition. After that, we compare them with future late-time singularities arising in models where the scale factor ends in a constant value and there is no violation of the strong energy condition. In phantom models the equation of state is well defined along the whole evolution, even at the big rip. However, both the pressure and the energy density of the phantom field diverge. In contrast, in the second kind of model the equation of state is not defined at the big rip because the pressure bursts at a finite value of the energy density.
3
Bouhmadi-López, Mariam, and José A. Jiménez Madrid. "Escaping the big rip?" Journal of Cosmology and Astroparticle Physics 2005, no. 05 (2005): 005. http://dx.doi.org/10.1088/1475-7516/2005/05/005.
Full text
4
FRAMPTON, PAUL H., and KEVIN J. LUDWICK. "CYCLIC COSMOLOGY FROM THE LITTLE RIP." Modern Physics Letters A 28, no. 29 (2013): 1350125. http://dx.doi.org/10.1142/s0217732313501253.
Full textAbstract:
We revisit a cyclic cosmology scenario proposed in 2007 to examine whether its hypotheses can be sustained if the underlying big-rip evolution, which was assumed there, is replaced by the recently proposed little rip. We show that the separation into causal patches at turnaround is generally valid for a little rip, and therefore conclude that the little rip is equally as suitable a basis for cyclicity as is the big rip.
5
Bouhmadi-López, Mariam, Pedro F. González-Díaz, and Prado Martín-Moruno. "Worse than a big rip?" Physics Letters B 659, no. 1-2 (2008): 1–5. http://dx.doi.org/10.1016/j.physletb.2007.10.079.
Full text
6
Mishra, R. K., and A. Singh. "Variable cosmology with “big-rip”." EAS Publications Series 36 (2009): 101–4. http://dx.doi.org/10.1051/eas/0936013.
Full text
7
Dimopoulos, Konstantinos. "Is the Big Rip unreachable?" Physics Letters B 785 (October 2018): 132–35. http://dx.doi.org/10.1016/j.physletb.2018.08.040.
Full text
8
Borislavov Vasilev, Teodor, Mariam Bouhmadi-López, and Prado Martín-Moruno. "Classical and Quantum f(R) Cosmology: The Big Rip, the Little Rip and the Little Sibling of the Big Rip." Universe 7, no. 8 (2021): 288. http://dx.doi.org/10.3390/universe7080288.
Full textAbstract:
The big rip, the little rip and the little sibling of the big rip are cosmological doomsdays predicted by some phantom dark-energy models that could describe the future evolution of our universe. When the universe evolves towards either of these future cosmic events, all bounded structures and, ultimately, space–time itself are ripped apart. Nevertheless, it is commonly believed that quantum gravity effects may smooth or even avoid these classically predicted singularities. In this review, we discuss the classical and quantum occurrence of these riplike events in the scheme of metric f(R) theories of gravity. The quantum analysis is performed in the framework of f(R) quantum geometrodynamics. In this context, we analyze the fulfilment of the DeWitt criterion for the avoidance of these singular fates. This review contains as well new unpublished work (the analysis of the equation of state for the phantom fluid and a new quantum treatment of the big rip and the little sibling of the big rip events).
9
Astashenok, Artyom V., Shinʼichi Nojiri, Sergei D. Odintsov, and Artyom V. Yurov. "Phantom cosmology without Big Rip singularity." Physics Letters B 709, no. 4-5 (2012): 396–403. http://dx.doi.org/10.1016/j.physletb.2012.02.039.
Full text
10
Yadav, Anil Kumar. "Dissipative Future Universe Without Big Rip." International Journal of Theoretical Physics 50, no. 5 (2011): 1664–70. http://dx.doi.org/10.1007/s10773-011-0675-4.
Full textDissertations / Theses on the topic "Big Rip"
1
Belsaas, Matthew W. "The death of the big rig cowboy culture." Virtual Press, 2007. http://liblink.bsu.edu/uhtbin/catkey/1365174.
Full textAbstract:
This creative project documents the effects of deregulation on the trucking industry. Through the use of DVD, the viewer learns all about the culture of trucking and the way it has changed in the past 30 years since deregulation. In August of 2006, I logged over 4,000 miles speaking with four different drivers. The result is a DVD consisting of a documentary, video short stories, photo journals, audio recordings and a flash card game, teaching the viewer about the trucking culture.<br>Department of Telecommunications
2
Pita, Robespierre Dantas da Rocha. "Correlação probabilística implementada em spark para big data em saúde." Instituto de Matemática. Departamento de Ciência da Computação, 2015. http://repositorio.ufba.br/ri/handle/ri/19308.
Full textAbstract:
Submitted by Santos Davilene (davilenes@ufba.br) on 2016-05-30T16:15:43Z
No. of bitstreams: 1
Dissertação_Mestrado_Clicia(1).pdf: 2228201 bytes, checksum: d990a114eac5a988c57ba6d1e22e8f99 (MD5)<br>Made available in DSpace on 2016-05-30T16:15:43Z (GMT). No. of bitstreams: 1
Dissertação_Mestrado_Clicia(1).pdf: 2228201 bytes, checksum: d990a114eac5a988c57ba6d1e22e8f99 (MD5)<br>A aplicação de técnicas de correlação probabilística em registros de saúde ou socioeconômicos de uma população tem sido uma prática comum entre epidemiologistas como
base para suas pesquisa não-experimentais. Entretanto, o crescimento do volume dos dados comum ao cenário imposto pelo Big Data provocou uma carˆencia por ferramentas computacionais capazes de lidar com esses imensos reposit´orios. Neste trabalho é descrita uma solução implementada no framework de processamento em cluster Spark para a correlação probabilística de registros de grandes bases de dados do Sistema Público de Saúde
brasileiro. Este trabalho está vinculado a um projeto que visa analisar a relação entre o Programam Bolsa Família e a incidência de doen¸cas associadas á pobreza, tais como hanseníase e tuberculose. Os resultados obtidos demonstram que esta implementação
provê qualidade competitiva em relação a outras ferramentas e abordagens existentes, comprovada pela superioridade das métricas de tempo de execução.
3
Carvalho, Elienay Gomes. "Rapsódia Paraense para Big Band: uma reelaboração de gêneros do Pará." reponame:Repositório Institucional da UFBA, 2010. http://www.repositorio.ufba.br/ri/handle/ri/9100.
Full textAbstract:
112 f.<br>Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2013-03-15T13:43:11Z
No. of bitstreams: 1
Dissertacao Elienay Gomes Carvalho.pdf: 2703456 bytes, checksum: 01a8f4de425857612b0dc773ceb8bf00 (MD5)<br>Approved for entry into archive by Rodrigo Meirelles(rodrigomei@ufba.br) on 2013-03-22T14:12:23Z (GMT) No. of bitstreams: 1
Dissertacao Elienay Gomes Carvalho.pdf: 2703456 bytes, checksum: 01a8f4de425857612b0dc773ceb8bf00 (MD5)<br>Made available in DSpace on 2013-03-22T14:12:23Z (GMT). No. of bitstreams: 1
Dissertacao Elienay Gomes Carvalho.pdf: 2703456 bytes, checksum: 01a8f4de425857612b0dc773ceb8bf00 (MD5)
Previous issue date: 2010<br>Este trabalho consiste em um memorial da obra Rapsódia Paraense, a qual foi concebida a partir de cinco gêneros musicais paraenses: carimbó, siriá, retumbão, samba de cacete e lundu marajoara; escolhidos como material pré-composicional, sendo que cada qual foi empregado dentro da obra como tema central de cada seção com o objetivo de sintetizá-los em um só movimento, característico do gênero rapsódia. A revisão da literatura pertinente aborda o significado e contextualização da rapsódia, reelaboração dentro de uma visão prática, os gêneros tradicionais paraenses, a Big Band, a Sam Band Pará e a análise mostrando todos os procedimentos composicionais aplicados à obra.<br>Salvador
4
Boff, Ediliane de Oliveira. "Narrativa em HQs ga?chas : projeto de leitura de O analista de Bag? e Radicci." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2009. http://tede2.pucrs.br/tede2/handle/tede/4373.
Full textAbstract:
Made available in DSpace on 2015-04-14T14:40:57Z (GMT). No. of bitstreams: 1
411672.pdf: 16991666 bytes, checksum: 2b98cf10ea9f76c663caa19aec72d9a5 (MD5)
Previous issue date: 2009-03-27<br>O trabalho ? um projeto de leitura de duas tiras de quadrinhos, Radicci e O analista de Bag?. A partir da teoria sobre o imagin?rio, de Michel Maffesoli e Gilbert Durand, procura-se compreender como tais cria??es, que possuem como argumento a constru??o de dois tipos ga?chos vinculados a diferentes aspectos do Rio Grande do Sul, reconstroem a experi?ncia da moderniza??o e da transforma??o de uma sociedade tradicional em uma sociedade p?smoderna. A disserta??o aponta caminhos para uma poss?vel leitura cr?tica sobre os ga?chos representados nessas duas narrativas quadrinizadas.
5
Fraga, Joana Azevedo. "Big data e o Sistema Único de Saúde no Brasil: uma sugestão para solução de problemas." Faculdade de Economia, 2016. http://repositorio.ufba.br/ri/handle/ri/23613.
Full textAbstract:
Submitted by Joana Fraga (joanafr1@gmail.com) on 2017-07-19T15:41:48Z
No. of bitstreams: 1
Dissertação Joana Azevedo Fraga.pdf: 1747417 bytes, checksum: 9ec02ab6496c17b49e88107d66852597 (MD5)<br>Approved for entry into archive by Vania Magalhaes (magal@ufba.br) on 2017-07-20T11:43:54Z (GMT) No. of bitstreams: 1
Dissertação Joana Azevedo Fraga.pdf: 1747417 bytes, checksum: 9ec02ab6496c17b49e88107d66852597 (MD5)<br>Made available in DSpace on 2017-07-20T11:43:54Z (GMT). No. of bitstreams: 1
Dissertação Joana Azevedo Fraga.pdf: 1747417 bytes, checksum: 9ec02ab6496c17b49e88107d66852597 (MD5)<br>Capes<br>Esta dissertação traz uma discussão sobre a utilização de tecnologias, apresentando o conceito de Economia da Saúde e Sistemas de Inovação e da ferramenta Big Data, oriunda do meio das tecnologias de informação, analisando sua possível importância econômica para o Sistema Único de Saúde. O Sistema Único de Saúde (SUS) do Brasil é apresentado, sendo mostrada sua estrutura e principais desafios e objetivos para gestão. Dessa forma, são relacionados os possíveis benefícios gerados pela utilização de Big Data para os serviços de saúde e gestão do sistema, tendo forte caráter inovativo.<br>This dissertation brings a discussion about the use of technologies, presenting the concept of Health Economics and Innovation Systems and the Big Data tool, coming from the information technology medium, analyzing its possible economic importance for the Unified Health System. (SUS) of Brazil is presented, showing its structure and main challenges and
objectives for management. In this way, the possible benefits generated by the use of Big Data for the health and management services of the system are considered, having a strong innovative character.
6
Brasil, Lu?sa Kuhl. "Retratos em (re)vista : do est?dio ? imprensa ilustrada em Bag?, 1890-1921." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2013. http://tede2.pucrs.br/tede2/handle/tede/2460.
Full textAbstract:
Made available in DSpace on 2015-04-14T13:47:57Z (GMT). No. of bitstreams: 1
447463.pdf: 4431720 bytes, checksum: 3b7446e0e3d510a78a1aba9671832cdd (MD5)
Previous issue date: 2013-03-27<br>This study discusses the construction of social roles through the artistic works produced by the photographer Jos? Greco in early twentieth century Brazil, in the city of Bag?. Using the concepts of visual culture and material culture, this paper analyzes the portraits and studio portraits published in Phenix Magazine, in 1921. Based on the notion that photography was an instrument of visual intermediation between the public and private spheres, this study analyzes those images focusing on its socializing nature.<br>O presente trabalho discute a constru??o de pap?is sociais por meio dos retratos produzidos por Jos? Greco no in?cio do s?culo XX na cidade de Bag?, RS. Atrav?s dos conceitos de cultura visual e cultura material, procura-se analisar os retratos de est?dio e os retratos publicados na revista ilustrada Phenix no ano de 1921. Partindo da no??o de que a fotografia foi um instrumento de media??o visual entre as esferas p?blica e privada, busca-se analisar as imagens a partir do seu car?ter de construtora de sociabilidades.
7
Pinto, Clícia dos Santos. "Aplicação de ETL para a integração de dados com ênfase em big data na área de saúde pública." Instituto de Matemática. Departamento de Ciência da Computação, 2015. http://repositorio.ufba.br/ri/handle/ri/19307.
Full textAbstract:
Submitted by Santos Davilene (davilenes@ufba.br) on 2016-05-30T15:55:34Z
No. of bitstreams: 1
Dissertação_Mestrado_Clicia(1).pdf: 2228201 bytes, checksum: d990a114eac5a988c57ba6d1e22e8f99 (MD5)<br>Made available in DSpace on 2016-05-30T15:55:34Z (GMT). No. of bitstreams: 1
Dissertação_Mestrado_Clicia(1).pdf: 2228201 bytes, checksum: d990a114eac5a988c57ba6d1e22e8f99 (MD5)<br>Transformar os dados armazenados em informações úteis tem sido um desafio cada vez maior e mais complexo a medida em que o volume de dados produzidos todos os dias aumenta. Nos últimos anos, conceitos e tecnologias de Big Data têm sido amplamente utilizados
como solução para o gerenciamento de grandes quantidades de dados em diferentes
domínios. A proposta deste trabalho diz respeito `a utiliza¸c˜ao de técnicas de ETL (extração,transformação e carga) no desenvolvimento de um módulo de pré-processamento para o pareamento probabilístico de registros em bases de dados na área de Saúde Pública.
A utiliza¸c˜ao da ferramenta de processamento distribuído do Spark garante o tratamento adequado para o contexto de Big Data em que esta pesquisa está inserida, gerando respostas em tempo hábil.
8
Lozado, Jersica Assis. "Adaptação e validação transcultural do Orpheus Business Personality Inventory para o contexto brasileiro." Faculdade de Filosofia e Ciências Humanas, 2017. http://repositorio.ufba.br/ri/handle/ri/23887.
Full textAbstract:
Submitted by Jersica Lozado (jersicaassis@gmail.com) on 2017-04-24T17:06:57Z
No. of bitstreams: 1
Dissertation_final_version (com ficha).pdf: 1617520 bytes, checksum: 41749c8d72ffae94a71ee15d63b2239e (MD5)<br>Approved for entry into archive by Hozana Azevedo (hazevedo@ufba.br) on 2017-08-08T13:45:53Z (GMT) No. of bitstreams: 1
Dissertation_final_version (com ficha).pdf: 1617520 bytes, checksum: 41749c8d72ffae94a71ee15d63b2239e (MD5)<br>Made available in DSpace on 2017-08-08T13:45:53Z (GMT). No. of bitstreams: 1
Dissertation_final_version (com ficha).pdf: 1617520 bytes, checksum: 41749c8d72ffae94a71ee15d63b2239e (MD5)<br>A literatura em Psicologia indica a carência de uma medida nacional que leve em consideração a personalidade do indivíduo no ambiente de trabalho. Considerando a qualidade psicométrica do teste dentro do contexto em que foi validado, o propósito deste estudo foi validar o Orpheus Business Personality Inventory (OBPI) para a população brasileira. Este teste foi desenvolvido especialmente para o ambiente organizacional e pode ser usado sob diversos propósitos, como seleção, promoção e desenvolvimento de colaboradores. O teste é composto por 190 itens, distribuídos em 16 escalas: cinco escalas maiores, sete escalas menores e quatro escalas de checagem. As escalas maiores, baseadas no modelo Big Five de personalidade, são Companheirismo, Autoridade, Conformidade, Emoção e Detalhe. As escalas menores, por sua vez, avaliam a integridade e foram baseadas nos traços do teste Giotto, são elas: Proficiência, Orientação para o trabalho, Paciência, Imparcialidade, Lealdade, Transparência e Iniciativa. Por fim, as escalas desenvolvidas para checagem de respostas contaminadas são: Dissimulação, Ambivalência, Desânimo e Falta de atenção. A coleta de dados foi realizada através da plataforma de testagem computadorizada Concerto, desenvolvida pela Universidade de Cambridge. Participaram deste estudo 938 indivíduos para a fase de testagem e 98 para a etapa de reteste. A validação de conteúdo contou com a participação de cinco juízes. Para a validade de construto, utilizou-se a Full Information Factor Analysis sob os pressupostos da Teoria de Resposta ao Item Multidimensional. O alfa de Cronbach e o coeficiente Omega foram calculados para medir a consistência interna de todas as escalas. Também foram avaliadas medidas de misfit de acordo com o modelo Rasch. Os resultados indicaram um conjunto de itens que apresentaram cargas fatoriais baixas, mas existem evidências de validade transcultural que podem ser
13
verificadas através dos resultados da validade de conteúdo e da fidedignidade do teste. A versão brasileira do OBPI não só suprirá uma lacuna na área de Avaliação Psicológica, como também auxiliará no desenvolvimento de um instrumento que seja multicultural em sua essência. Espera-se que em mão dos resultados aqui apresentados, estudos futuros possam encontrar evidências adicionais de validade de construto.<br>The literature in Psychology indicates the need for a national instrument that takes into consideration individual personality inside the workplace. Given the psychometric quality of this test within its validation context, the purpose of this study was to validate the Orpheus Business Personality Inventory to the Brazilian population. This test has been developed specially to the organizational environment and can be used under several purposes, such as selection, promotion and development of employees. The test is composed of 190 items divided through 16 scales: five major scales, seven minor scales and four audit scales. The major scales, based on the Big Five personality model, are Fellowship, Authority, Conformity, Emotion and Detail. The minor scale are a measure of integrity and were based on the traits stated on the Giotto test, they are: Proficiency, Work orientation, Patience, Fair-Mindedness, Loyalty, Disclosure and Initiative. Finally, the scales created to audit invalid responses are Dissimulation, Ambivalence, Despondency and Inattention. The data was collected through Concerto platform, developed by the University of Cambridge. In this study, participated 938 individuals for the testing phase and 98 for the retest phase. For the content validity study, five experts participated. For the construct valitidy study, a Full Information Factor Analysis was performed under the Multidimensional Item Response Theory underlying assumptions. Cronbach’s alpha and the Omega coefficient were calculated to evaluate the internal consistency for all scales. Misfit measurement were also investigated, according to the Rasch Model. The results indicated that a group of items presented low factor loadings, although cross-cultural validity can be inferred from the results for the content validity and reliability of the test. The Brazilian version of OBPI will not only fill a gap in the area of Psychological Evaluation, but will also assist the
15
development of an instrument that is multicultural in its essence. It is expected that further studies will support the results presented here with additional construct validity evidences.
9
Melo, Cleisson de Castro. "A influência do jazz: a swing era na música orquestral de concerto brasileira no período de 1935 a 1965." Programa de pós-graduação em música, 2010. http://www.repositorio.ufba.br/ri/handle/ri/6460.
Full textAbstract:
200f.il.<br>Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-07-18T14:19:27Z
No. of bitstreams: 1
Cleisson Melo - Influencia do Jazz - Swing Era na Musica Orquestral - WEB.pdf: 2268566 bytes, checksum: eebf287a501f71693a8ee7deeb015427 (MD5)<br>Made available in DSpace on 2012-07-18T14:19:28Z (GMT). No. of bitstreams: 1
Cleisson Melo - Influencia do Jazz - Swing Era na Musica Orquestral - WEB.pdf: 2268566 bytes, checksum: eebf287a501f71693a8ee7deeb015427 (MD5)
Previous issue date: 2010-02<br>Este trabalho tem como objetivo investigar a influência das Big Bands (Jazz Orquestra)
na música brasileira de concerto para orquestra entre 1935 a 1965, período de existência das Big Bands antes do movimento de revitalização (Revival) destas. Através da análise dos traços rítmicos, harmônicos, instrumentais e principalmente orquestrais, com diferentes abordagens composicionais, no intento de demonstrar estratégias compositivo-orquestrais adotadas emobras sob esta influência. Pretende ainda compor uma obra baseada na influência das big bands em dialogo com a música erudita contemporânea, inserindo estes dois conteúdos em uma ambientação sinfônica pequena de modo a extrair o máximo de recursos e sonoridade de uma instrumentação menor, demonstrando assim a riqueza desta influência.<br>Salvador
10
Andrade, Kleydson Bonfim. "Avaliação da eficácia da Vacina BCG na mortalidade por causas específicas." Instituto de Saúde Coletiva-ISC, 2015. http://repositorio.ufba.br/ri/handle/ri/18872.
Full textAbstract:
Submitted by Maria Creuza Silva (mariakreuza@yahoo.com.br) on 2016-04-14T18:12:50Z
No. of bitstreams: 1
Dissertacao. Kleydson Bonfim Andrade.2015.pdf: 654797 bytes, checksum: 1ff7694eaf3e0bcfb880b2d0518bf2c9 (MD5)<br>Approved for entry into archive by Maria Creuza Silva (mariakreuza@yahoo.com.br) on 2016-04-18T12:52:53Z (GMT) No. of bitstreams: 1
Dissertacao. Kleydson Bonfim Andrade.2015.pdf: 654797 bytes, checksum: 1ff7694eaf3e0bcfb880b2d0518bf2c9 (MD5)<br>Made available in DSpace on 2016-04-18T12:52:53Z (GMT). No. of bitstreams: 1
Dissertacao. Kleydson Bonfim Andrade.2015.pdf: 654797 bytes, checksum: 1ff7694eaf3e0bcfb880b2d0518bf2c9 (MD5)<br>Vários estudos demonstram efeito protetor da vacina BCG, 1 dose ao nascer, contra tuberculose, variando de 70-86%. Outros estudos demonstram efeitos inespecíficos da BCG, 1ª dose, na redução em 17% da mortalidade geral, com efeitos maiores no período neonatal. Objetivou-se com esse estudo, verificar o efeito da vacina BCG, 1ª dose neonatal e na infância, na mortalidade geral, nas cidades de Salvador-BA e Manaus-AM. Trata-se de um ensaio comunitário controlado e randomizado, sem placebo, acontecido entre 1996-1998 (REVAC-BCG). Escolas públicas de Salvador e Manaus com crianças de 7-14anos foram randomizadas para vacinação com BCG (2ª dose). Os registros compuseram um banco de dados com 354.406 crianças. Utilizando o software RecLink III, foi realizado o linkage probabilístico com todos os óbitos registrados no Sistema de Informação em Mortalidade, ocorridos nas duas capitais entre os anos de 1997 e 2014. Para a comparação entre os grupos (intervenção e controle), foi feira a estatística descritiva, incluindo o cálculo da Taxa de Mortalidade e a Razão da Taxa de Mortalidade. Para a estimativa da Efetividade Vacinal, foi utilizada a Regressão Logística com GEE, e para Análise de Sobrevida, foram calculadas as estimações não-paramétricas de Kaplan-Meier. Foi observada uma distribuição semelhante das variáveis (sexo, faixa etária e status socioeconômico) entre os grupos intervenção e controle, tanto no grupo de análise da primeira dose neonatal quanto na primeira dose na infância. Os achados apontam para um efeito protetor da vacinação por BCG neonatal na mortalidade geral de 25%, e da vacinação por 1ª dose de BCG na infância de 10%. Este é o primeiro estudo no Brasil que buscou avaliar o efeito de vacinas na mortalidade e, corroborando com outros estudos, os resultados demonstram que a vacina BCG neonatal é uma medida eficaz na redução de óbitos.
Books on the topic "Big Rip"
1
ill, Payne Thomas, ed. This whole Tooth Fairy thing's nothing but a big rip-off! Marshall Cavendish, 2002.
Find full text
9
Havenhill, Jackye. From the Big Red to the Rio Grande: Texas legends. Royal Fireworks Press, 1997.
Find full text
10
Câmara, Leide. Dicionário da música do Rio Grande do Norte. Acervo da Música Potiguar, 2001.
Find full textBook chapters on the topic "Big Rip"
1
Mahanta, Chandra Rekha, and Manash Pratim Das. "Big Rip in Tsallis Holographic Dark Energy Model Within the Framework of General Relativity." In Industrial and Applied Mathematics. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-1961-0_16.
Full text
2
Vignetti, Silvia. "Designing a Research Infrastructure with Impact in Mind." In The Economics of Big Science. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-52391-6_11.
Full textAbstract:
Abstract Assessing the socio-economic impact of a Research Infrastructure (RI) requires an evaluation framework and a data collection plan that should be put in place as early as possible. This essay maintains the idea that if data collection for impact assessment is not episodic, motivated by external requests from stakeholders and funding agencies, but rather becomes a routine activity, it could maximize its potential to inform the RIs management and serve the strategic planning function of the infrastructure.
3
Ribeiro, Margarida. "Towards a Sustainable European Research Infrastructures Ecosystem." In The Economics of Big Science. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-52391-6_2.
Full textAbstract:
Abstract Research Infrastructures (RIs) are of fundamental strategic importance for Europe’s global competitiveness and remain at the heart of the knowledge triangle of research, education and innovation. Of paramount importance is to coordinate the development and use of top infrastructures for data collection, management, processing and analysing while also ensuring the long-term sustainability of research infrastructures. The following essay touches on some of the key goals and available tools to develop world-class sustainable Research Infrastructures open and accessible to all researchers in Europe and beyond.
4
Reid, Alasdair. "Designing a Socio-Economic Impact Framework for Research Infrastructures: Preliminary Lessons from the RI-PATHS Project." In The Economics of Big Science. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-52391-6_9.
Full textAbstract:
Abstract The Horizon 2020 funded RI-PATHS project aims at providing policy makers, funders and Research Infrastructure (RI) managers the tools to assess the impact on the RI on the economy and their contribution to resolving societal challenges, etc. The goal is to improve the understanding of the long-term impact pathways of the various types of RIs operating in Europe, and, indeed, internationally. In the following we briefly summarise the work carried out by the RI-PATHS consortium partners to mid-2019 and derive useful lessons for future work.
5
Lünich, Marco. "Der vermeintliche Siegeszug der Digitalisierung." In Der Glaube an Big Data. Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-36368-0_2.
Full textAbstract:
Zusammenfassung„Der Siegeszug der Digitalisierung ist nicht aufzuhalten.“ So oder so ähnlich liest man es derzeit häufig in Einleitungen von studentischen Hausarbeiten, hört es in den Medien (Breitkopf, 2015) oder aus der Industrie (Siemens, 2017) und in etlichen Büchern, die sich dem vermeintlichen Siegeszug in Vergangenheit, Gegenwart und Zukunft widmen (Barrat, 2013; Kurzweil, 2005; Nassehi, 2019; Rid, 2017; Tegmark, 2018). Selbstredend kommen alle, die den Satz auf seinen Wahrheitsgehalt prüfen, schnell zu dem Ergebnis, dass er in dieser Bestimmtheit ohne gewisse Einschränkungen oder Relativierungen gar nicht geäußert werden könne.
6
Herkersdorf, Andreas, Michael Engel, Michael Glaß, et al. "RAP Model—Enabling Cross-Layer Analysis and Optimization for System-on-Chip Resilience." In Dependable Embedded Systems. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-52017-5_1.
Full textAbstract:
AbstractThe Resilience Articulation Point (RAP) model aims to provision a probabilistic fault abstraction and error propagation concept for various forms of variability related faults in deep sub-micron CMOS technologies at the semiconductor material or device levels. RAP assumes that each of such physical faults will eventually manifest as a single- or multi-bit binary signal inversion or out-of-specification delay in a signal transition between bit values. When probabilistic error functions for specific fault origins are known at the bit or signal level, knowledge about the unit of design and its environment allow the transformation of the bit-related error functions into characteristic higher layer representations, such as error functions for data words, finite state machine (FSM) states, IP macro-interfaces, or software variables. Thus, design concerns can be investigated at higher abstraction layers without the necessity to further consider the full details of lower levels of design. This chapter introduces the ideas of RAP based on examples of particle strike, noise and voltage drop induced bit errors in SRAM cells. Furthermore, we show by different examples how probabilistic bit flips are systematically abstracted and propagated towards instruction and data vulnerability at MPSoC architecture level, and how RAP can be applied for dynamic testing and application-level optimizations in an autonomous robot scenario.
7
Martins, Pedro, Alexandre Hojda, and Marcela de Moraes Batista Simão. "City Command and Control Centers as Think Tanks for Organization of Big Events." In Smart Urban Safety and Security. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-2196-2_11.
Full textAbstract:
AbstractThe city command and control center (C4) can be considered as the heart of a smart city. In this sense, the big picture is that the C4 integrates local urban services and teams to make the city run smoothly and efficiently for residents, businesses, and visitors, guaranteeing people’s safety and security, by providing prompt responses to risks and occurrences (unexpected or expected). To achieve this, three major roles need to be well covered by C4: to identify risks and problems; to integrate planning and operations; and to communicate with citizens and city teams. Big events in venues—or having urban open spaces as venues—gather in specific regions more people, risks and, consequently, more complexities, forcing the C4 to adapt its operational arrangement to deal with these temporary scenarios. Based on Rio de Janeiro’s experiences such as the annual carnival parades and the 2016 Olympic Games, this chapter aims to highlight lessons learned and best practices regarding city command and control for big events as key element to deliver, as results, higher levels of city operational governance for events and minimizing its impacts in citizens’ daily routines. The topics covered includes communication strategies with citizens and operational teams; integrated operational planning within the C4; real-time monitoring; risks and contingencies assessments, via exercises; and rearrangement of C4 for street events. Authors utilized participant observation as methodology to develop this chapter, as they gathered information from direct participation in the working processes in Rio, and organized it in knowledge that can be used as reference for Sure project and other cities’ initiatives worldwide
8
Roe, Emery, and Scott Fortmann-Roe. "Key Dimensions of Algorithmic Management, Machine Learning and Big Data in Differing Large Sociotechnical Systems, with Implications for Systemwide Safety Management." In Safety in the Digital Age. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-32633-2_3.
Full textAbstract:
AbstractThe time is ripe for more case-by-case analyses of “big data”, “machine learning” and “algorithmic management”. A significant portion of current discussion on these topics occurs under the rubric of Automation (or, artificial intelligence) and in terms of broad political, social and economic factors said to be at work. We instead focus on identifying sociotechnical concerns arising out of software development in the topic areas. In so doing, we identify trade-offs and at least one longer-term system safety concern not typically included alongside notable political, social and economic considerations. This is the system safety concern of obsolescence. We end with a speculation on how skills in making these trade-offs might be noteworthy when system safety has been breached in emergencies.
9
Kaseb, Mostafa R., Mohamed H. Khafagy, Ihab A. Ali, and ElSayed M. Saad. "Redundant Independent Files (RIF): A Technique for Reducing Storage and Resources in Big Data Replication." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77703-0_18.
Full text
10
Ladani, Paritkumar. "Ear Reconstruction." In Oral and Maxillofacial Surgery for the Clinician. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-1346-6_35.
Full textAbstract:
AbstractMicrotia is a congenital deformity of the external ear, with a prevalence rate of approximately 1 in 10,000 live births worldwide. The auricle is a distinguishing feature of the face. Its deformity may have severe psycho-social implications on the affected children, affecting their self-confidence. Current reconstructive techniques for microtia mainly include the auricular prosthesis, implantation of alloplastic or an autologous rib cartilage framework. Alloplastic implant reproduces an excellent shape of the ear with no donor site morbidity, however its bio-integration is questionable and may make them prone for extrusion and infection. Sub-cutaneous implantation of autologous rib cartilage still remains the gold-stand treatment for microtia. However this technique has its surgical morbidities and skill demands, which makes it difficult to master. Translational research in the fields of tissue engineering for generation of bone and cartilage for ear reconstruction are emerging trends.
Conference papers on the topic "Big Rip"
1
Holveck, Phil, and Larry Armijo. "Readiness Integration Center (RIC)." In Vertical Flight Society 70th Annual Forum & Technology Display. The Vertical Flight Society, 2014. http://dx.doi.org/10.4050/f-0070-2014-9620.
Full textAbstract:
The Naval Air System Command (NAVAIR) Naval Aviation Enterprise (NAE) Automated Logistics Environment (ALE) is applying Big Data Analytics and Cloud Computing Technology to support critical elements of Condition Based Maintenance Plus (CBM+) and Reliability Centered Maintenance (RCM) for NAVAIR platforms. The Comprehensive Automated Maintenance Environment -- Optimized (CAMEO) Readiness Integration Center (RIC) ALE capability focus is on the V-22 platform with an implementation strategy to apply Collaborative, Agile, Open Source, Big Data Analytics, and Cloud Technology to Collect, Connect, Warehouse, Analyze, and Act to improve platform readiness. The RIC is leveraging NAVAIR NAE ALE capability to Collect, Connect, and Warehouse critical Platform data. NAE collaboration with V-22, E2D, and Triton automated data extracts to support Platform analytic and decision support tool use and development. The RIC sponsors V-22 collaborative, agile, open source development using big data analytics and cloud technology to support the V-22 Readiness Steering Committee and Readiness Teams. The RIC actively supports Agile methodology for analytic and decision support tool development. The RIC use of Open Source tenants includes protections for intellectual property and licensing for use. The RIC development environment is consistent with Big Data and Cloud Technology computing and the RIC infrastructure and selected toolsets have completed proof of concept implementation in the Cloud. The focus of this paper is to describe a "day in the life of Big Data Analytics" from data recording and collection through RIC analytics and use by in service support engineering to effect corrective action.
2
DABROWSKI, MARIUSZ P., and ADAM BALCERZAK. "BIG-RIP, SUDDEN FUTURE, AND OTHER EXOTIC SINGULARITIES IN THE UNIVERSE." In Proceedings of the MG11 Meeting on General Relativity. World Scientific Publishing Company, 2008. http://dx.doi.org/10.1142/9789812834300_0321.
Full text
3
Li, Qiuguo, Khaqan Khan, Augustine Monyei, and Tariq Mahmood. "3D Rate of Penetration Prediction for Horizontal Well Planning." In International Geomechanics Conference. ARMA, 2024. https://doi.org/10.56952/igs-2024-0078.
Full textAbstract:
ABSTRACT: Due to high rock strength and formation abrasiveness, horizontal well drilling in deep tight sandstone reservoirs has been challenged by slow drilling, low average bit footage, and excessive number of bit runs. These challenges contribute to low drilling efficiency and high drilling costs. In the rock cutting process with a Pollycrystalline Diamond Compact (PDC) drill bit, many factors affect the rate of penetration (ROP), including formation characteristics, drill bit design, bit wear conditions, drilling parameters and wellbore hydraulics. In addition to pore pressure, in-situ stresses and other formation properties, compressive strength and abrasiveness are the major factors affecting ROP. The bit profile, back rake angle and total flow area of a PDC bit, as well as the bit wear conditions can affect the ROP. Drilling and mud parameters also have a big impact on ROP. Horizontal wells drilled in deep and tight reservoirs have shown very different drilling performance which provided an opportunity to optimize well trajectory plans for improved drilling performance. We developed a predictive model that considers all the major factors that affect ROP, and the 3D ROP model was used for assisting horizontal well planning. Drilling performance in the wells planned with the 3D ROP model was significantly improved which resulted in improved ROP, fewer bit runs and overall cost savings for drilling the horizontal wells. 1. INTRODUCTION Drilling in deep and tight reservoir formations has been very challenging due to low rate of penetration and high drilling cost. These tight formations are typically characterized by low porosity, high rock strength and high abrasiveness. The Barik and Amin sandstone reservoirs in Oman are greater than 4000 m deep and are reported to have unconfined compressive strength (UCS) of exceeding 35,000 psi (Najwani et al., 2013). Formation rock with UCS reaching 40,000 psi and friction angles from 25 to 75 degrees are also reported in another deep formation in Middle East which contains hard and abrasive sandstone reservoirs consisting of irregular, fine to coarse grained pebbles and conglomerates (Simpson et al., 2003). The challenges these hard rocks present to drilling typically include low rate of penetration (ROP), accelerated bit wear which leads to low bit footage, large number of bit-runs and frequent trips (Simpson et al., 2003).
4
Bhoite, Sameer, Ashley Johnson, Adeel Mukhtar, David Long, Suchita Singh, and Nicholas Peot. "Using Big Data to Spotlight HFTO." In IADC/SPE International Drilling Conference and Exhibition. SPE, 2024. http://dx.doi.org/10.2118/217678-ms.
Full textAbstract:
Abstract High frequency torsional oscillation (HFTO) is a major contributing factor to the drilling dynamics-related bottomhole assembly (BHA) failures. These failures are costly because they not only damage the drilling tools but also cause significant nonproductive time (NPT) to the operational activity. It is therefore highly desirable to measure and mitigate this dysfunction in real time. We have built a high-performance drilling dynamics module, which enables real-time or recorded mode measurements of this HFTO phenomenon. Using this measurement, we can deliver actionable insights to the rig or the rig crew in real time. With data from more than 3000 runs, we can build a clearer understanding of the real characteristics of HFTO, its drivers, and the effects it has on our drilling systems. We show that with increasing Weight on Bit (WOB) the amplitude of the HFTO will increase. However, at high WOB the dysfunction amplitude will drop, while the ROP continues to rise. As such there is a sweet spot with high ROP and low HFTO. By integrating this database of drilling dysfunctions with our records of tool damage and nonproductive time, we can map the effect of HFTO onto different failure criteria. As a result, we can define new and better operational standards and generate real-time insights into what damage is more likely to occur and how to change drilling parameters, if needed, to prevent it or determine if the vibration will pass without incident. We also show that although the rotary steerable tools we use are sensitive to the effect of HFTO, our measurement while drilling (MWD) tools are not. For this latter group the probability of damage is the same for runs with and without HFTO. This paper discusses the method and results for this study.
5
Al-Rubaii, Mohammed M. "A Newly Developed Drilling Rate Model Optimizes Drilling Efficiency Using Artificial Intelligence." In International Petroleum Technology Conference. IPTC, 2024. http://dx.doi.org/10.2523/iptc-24252-ea.
Full textAbstract:
Abstract Rate of penetration is defined as the depth of the drilled rock per time unit while drilling. Alternatively, drilling rate or rate of penetration (ROP) is the speed of drilling. It is usually stated as drilled footage per hour (ft/hr). ROP has a major impact on the cost optimization and accelerating delivery of wells. ROP is a critical factor in calculating cost per foot in each well. ROP optimization ensures efficient mud solid equipment by controlling the mud control system and its compatibility with drilling cuttings. It is also valuable to optimize the ROP without jeopardizing the well drilling performance order to avoid the inducing drilling problems. The objective of the introduced paper is to present a new rate of penetration model that combine the mechanical parameters, bit and rig hydraulics, and drilling fluid rheological properties. The model has been validated in the field, and compared with offset wells. The results has shown improvement of well drilling performance and safe optimization. Many of ROP models were developed before such as ROP model based on drilling fluid parameters, surface drilling parameters, or machine learning models or on bit design modifications models. Noticeably, those models have not been validated, and not feasible for drilling operation. The new ROP model combines several factors, has been validated, and designed for drilling operation. Mechanical parameters, rheological properties, bit & rig hydraulics were collected for the same field, hole section, and mud type to ensure the compatibility of the developed model with applications of ROP optimization for the given field. The relationships between ROP with mechanical parameters, drilling fluid rheological properties and bit and rig hydraulics were analyzed and evaluated to conclude the best and strongest relationships. The optimization was used and implemented by including valuable and novel technique that enabled the developed model to perform significant improvement in comparison with drilled offset wells. The result showed the validation and comparison values of measured ROP was 95 % of regression which is a high value of squared regression of R2. By comparing the optimized ROP in real time with offset wells’ ROP, 50% ROP improvement was recorded. The developed model can tell the user the optimized drilling parameters, proper drilling fluid properties, enhanced rig & bit hydraulics that can lead for comparable and proper optimization without jeopardizing the well drilling performance. The developed model can be easily link to real time operations center (RTOC) to ensure real time monitoring model and ROP analyzer system. The new model can be compiled with other artificial intelligent tools in real time.
6
Barajas, Pablo E., Paul Pastusek, Aaron Lacey, et al. "The Role of Auto Driller, Rig Control Systems and Driller Procedures in Reduction of BHA Failures." In SPE Annual Technical Conference and Exhibition. SPE, 2023. http://dx.doi.org/10.2118/214997-ms.
Full textAbstract:
Abstract Reducing bottom hole assembly (BHA) failures has been the focus of this operator in US land intermediate and lateral sections to reduce cost per foot. BHA failures can be mitigated with better auto driller processes, improved rig control system technology and drilling mechanics based procedures. The operator, rig contractor and BHA service providers engaged in an intensive continuous improvement process for 18 months to help two rigs in Oklahoma reduce BHA's per well. The goal was to determine how to best tune the auto driller and standardize set point practices. By investigating this for each stand drilled, the plan was to improve bit run footage and reduce BHA tool failures per hole section. The rig contractor deployed a system upgrade and adjusted driller procedures to help identify auto driller dysfunction quicker. In-bit sensors that measured drilling parameters, vibration and strain were run to validate suspected downhole dysfunction and premature bit failure. The operator's procedure to quickly evaluate and mitigate auto driller dysfunction was trialed to distinguish rig control system induced dysfunction from downhole drilling mechanics dysfunction. For the Oklahoma rigs, auto driller stability was evaluated and improved in ∼50 BHA runs in the 12-1/4″ intermediate hole sections and in ∼100 BHA runs in the 8-3/4″ lateral BHA runs. Motor failures in the 12-1/4″ intermediate section and in the 8-3/4″ lateral sections were reduced, as were premature bit failures. Also, it was found that tool joint hang-up in the rotating head were exciting the rig control system into dysfunction and causing a significant reduction in downhole weight on bit (WOB), differential pressure (DP) and rate of penetration (ROP). These hang-up events were occurring 3 times per stand, and although ROP would recover after the tool joint exited the rotating head, damaging vibrations at the bit continued long after the ROP recovered. The operator's tool joint compensation procedure was implemented in subsequent runs and lateral bit vibration and dull condition improved substantially. The learnings from the auto driller continuous improvement process were cascaded to two additional rigs in another basin in East Texas. Reducing depth of cut (DOC) variance through ROP set point management in interbedded formations reduced required bit runs in the second basin as well. The rig contractor deployed an upgraded auto driller system to minimize parameter variance and extend the life motors in high temperature laterals reducing the risk of catastrophic failure. And the rig contractor and operator continue to develop and trial auto driller dysfunction alarms to alert to possible BHA dysfunction. New tools, processes and scorecards are being developed to aid in the identification of dysfunction in rotary and slide drilling.
7
Singh, K., T. Welch, K. Ait Larbi, et al. "Revolutionizing Drilling Efficiency: A Case Study of Integrated Closed-Loop Automation Across Multiple Basins." In SPE/IADC International Drilling Conference and Exhibition. SPE, 2025. https://doi.org/10.2118/223804-ms.
Full textAbstract:
Abstract This paper provides an update on the implementation and results of a closed-loop drilling automation system (SPE-217693-MS) after drilling 100 wells in the Bakken, Delaware, and Eagle Ford basins. This technology, developed through an integrated collaboration between a rig contractor and a Software as a Service (SaaS) provider, primarily aims to minimize the cost per foot drilled by utilizing Machine Learning (ML) models to optimize autodriller setpoints remotely. The ML based ROP optimizer processes real-time WITSML data and static inputs, such as Bottom Hole Assembly (BHA), mud data, and survey information, to generate setpoints for Differential Pressure (DPRESS), Weight on Bit (WOB), Rate of Penetration (ROP), and Rotations Per Minute (RPM). These setpoints are then transmitted to the rig contractor’s cloud and subsequently forwarded to the hardware autodriller on the rig, enabling automated rotary drilling with minimal human intervention. The technology has been utilized on over 100 wells in multiple basins in different formations in collaboration with several major Oil and Gas operators. Achieving optimal Rate of Penetration (ROP) improvements in the 1-22% range in the lateral and 0-58% improvement in the intermediate compared to non-ML drilled offsets was observed when the utilization of the ML ROP Optimizer in closed-loop mode reached or exceeded 70%. Higher ROP was consistently correlated with fewer manual limit changes by both onsite and remote operators. Additionally, successful implementation of this technology was strongly associated with comprehensive rig onboarding, clear communication between the rig crew, onsite and remote support teams from both rig contractor and SaaS companies. Continuous fine-tuning of the ML algorithms was necessary, particularly with specific logic adjustments to ramp setpoints such as Weight on Bit (WOB), Rotations Per Minute (RPM), and ROP. These adjustments were critical in accommodating the diverse control system configurations of different rigs, ultimately leading to more stable and efficient drilling operations. This abstract presents a case study of successfully scaling integrated closed-loop technology across 100+ wells, involving a collaboration between a rig contractor and a SaaS provider. The paper highlights key observations and success factors for the widespread adoption of automated drilling technology across various basins and major operators
8
Yuanzhuo, Li. "Ripl: Document-Level Event Argument Extraction via Role-aware Interactive Pointer Labeling Network." In 2022 IEEE International Conference on Big Data (Big Data). IEEE, 2022. http://dx.doi.org/10.1109/bigdata55660.2022.10020889.
Full text
9
Hinaai, Qasim Al. "Real Time Optimization of Drilling Parameters During Drilling Operations." In International Petroleum Technology Conference. IPTC, 2024. http://dx.doi.org/10.2523/iptc-24237-ms.
Full textAbstract:
Drilling Optimization is a main drive to reduce overall well cost. The current practice of performing drill off tests, whenever the founder point is reached, increases the risk of reducing bit life, wasting rig time, and depending on crew competency to find the best parameters. In other cases drilling with maximum parameters might lead to stuck or bit damage as shown in (figure-1).This research study as part of my MSc thesis in Robert Gordon University (RGU) aims to present a tested technique of real time optimization of drilling parameters using multiple regression analysis with an 8x8 matrix and 8 variables. The objective is to establish relationships between different drilling parameters and design a real-time optimization system for achieving the best Rate of Penetration (ROP) in drilling operations. The model incorporates offset data and subsurface conditions to predict ROP with an accuracy of over 90% compared to actual ROP. Additionally, the model has been enhanced with a bit tooth wear model to optimize both ROP and the longevity of the drilling section.
10
Franco, Nata Miranda, Alexandre Jean Robert Javay, Mohamed Essam Abdelmoneim Al Moselhy, and Mahmoud Mohamed Osama Mohamed Saeifeldin ElAssy. "Introducing New 22" PDC Bit for Drilling Complex Shallow Sections in a Giant Field in the Middle East." In Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/207846-ms.
Full textAbstract:
Abstract Drilling a 22" section across interbedded, high-impact, and abrasive formations has historically been challenging in giant fields in the Middle East. The section typically ranges from 3,000 ft to 4,000 ft long and requires three to four runs to reach the casing point with conventional TCI bits. This paper covers the introduction of a new 22" PDC bit design run on rotary assembly, which has spectacularly improved the drilling performance over the conventional tricone bits. The introduction of this new 22" PDC bit design followed a comprehensive engineering approach. Starting with the simulation of rock properties such as compressive strength, abrasiveness, and impact, a fit-for-purpose bit design was manufactured to address the needed cutting structure, number of blades, and depth of cut for the section. The downhole drilling dynamics were also thoroughly analyzed, and the bottom hole assembly configuration was revisited to match up with the new bit structure. Within the dedicated continuous improvement workflow set by the service company, the bit pattern was further optimized after the initial field trials. After an in-depth analysis of the various formation properties and their impact on bit life, the 22" section was divided into two target runs. The upper part has high-impact and interbedded layers, and the lower part has high abrasiveness and formation compressive strength. In the upper part, the TCI bits had previously shown relatively good performance with acceptable ROP, while the PDC bits experienced damage to their cutting structure. As the impacts were lower in the bottom part, the PDC bit design was selected for the second run to the casing point, which resulted in significantly higher ROP and a longer lifetime than the TCI runs. The 2-bit strategy, spudding the section with the TCI bit and completing it with the PDC bit on rotary assembly, translated into a significant improvement of ROP by 32%. In addition to saving rig time, the overall number of bit runs was reduced by 29%, resulting in cost savings by using fewer bits. Drilling the section in two runs has now become the norm, and this winning strategy was adopted as the new standard for drilling the 22" hole section. The introduction of the 22" PDC bit on rotary drive returned excellent results and record-breaking ROP performance. While the 22" PDC cost might seem prohibitive, the substantial rig time savings proved this solution to be very economical. Further development of this initiative to other basins in the Middle East or elsewhere will mutually benefit both the operator and service company.
Reports on the topic "Big Rip"
1
Ali, Alee. Riz Ali bio. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1764174.
Full text
2
Cerdeira, Pablo, Marcus Mentzingen de Mendonça, and Urszula Gabriela Lagowska. Políticas públicas orientadas por dados: Os caminhos possíveis para governos locais. Edited by Mauricio Bouskela, Marcelo Facchina, and Hallel Elnir. Inter-American Development Bank, 2020. http://dx.doi.org/10.18235/0002727.
Full textAbstract:
Este texto para discussão aborda alguns estudos preliminares do Projeto “Big Data para o Desenvolvimento Urbano Sustentável” conduzido pela Fundação Getulio Vargas em parceria com o BID, com as cidades de Miraflores (Peru), Montevidéu (Uruguai), Quito (Equador), São Paulo (Brasil) e Xalapa (México) e com o apoio do aplicativo Waze. Este projeto faz parte da Cooperação Técnica Regional RG-T3095 financiada pelo BID, por intermédio do programa de Bens Públicos Regionais, e executado pela FGV. No BID, o estudo foi coordenado pela Divisão de Habitação e Desenvolvimento Urbano e, na FGV, pelo Centro de Tecnologia e Desenvolvimento - CTD, e desenvolvido em parceria com o Centro de Estudos de Política e Economia do Setor Público - CEPESP (Aspectos Institucionais), a Escola de Direito do Rio de Janeiro - FGV Direito Rio (Aspectos Regulatórios) e a Escola de Matemática Aplicada - FGV EMAp (Ciencia de Dados).
3
Raymond, Kara, Laura Palacios, and Evan Gwilliam. Status of climate and water resources at Big Bend National Park: Water year 2019. Edited by Tani Hubbard. National Park Service, 2022. http://dx.doi.org/10.36967/2294267.
Full textAbstract:
Climate and hydrology are major drivers of ecosystem structure and function, particularly in arid and semi-arid ecosystems. Understanding changes in climate, groundwater, streamflow, and water quality is central to assessing the condition of park resources. This report combines data collected on climate, groundwater, and springs at Big Bend National Park (NP) to provide an integrated look at climate and water conditions during water year (WY) 2019 (October 2018–September 2019). However, this report does not address the Rio Grande or its tributaries. Annual precipitation was higher than normal (1981–2010) for Big Bend NP at four of the five National Oceanic and Atmospheric Administration Cooperative Observer Program weather stations: 111% of normal for Chisos Basin, 122% of normal for Panther Junction, 155% of normal for Persimmon Gap, and 124% of normal for Rio Grande Village. Castolon had 88% of normal annual precipitation. All five stations had higher than normal rainfall in October and December, while rainfall totals were substantially below normal at all stations in November, February, and March. Monthly precipitation totals for April through September were more variable from station to station. Mean monthly maximum air temperatures were below normal in the fall months, with Panther Junction as much as 7.5°F below normal in October. Monthly temperatures from January through July were more variable. Temperatures in August and September were warmer than normal at every station, up to +9.4°F at Rio Grande Village and +8.7°F at Chisos Basin in July. The reconnaissance drought index values indicate generally wetter conditions (based on precipitation and evaporative demand) at Chisos Basin since WY2016 and at Panther Junction and Persimmon Gap since WY2015, except for WY2017. This report presents the manual and automatic groundwater monitoring results at nine wells. Five wells had their highest water level in or just before WY2019: Panther Junction #10 peaked at 99.94 ft below ground surface (bgs) in September 2018, Contractor’s Well peaked at 31.43 ft bgs in November 2018, T-3 peaked at 65.39 ft bgs in December 2018, K-Bar #6 Observation Well peaked at 77.78 ft bgs in February 2019, and K-Bar #7 Observation Well peaked at 43.18 ft bgs in February 2019. This was likely in response to above normal rainfall in the later summer and fall 2018. The other monitoring wells did not directly track within-season precipitation. The last measurement at Gallery Well in WY2019 was 18.60 ft bgs. Gallery Well is located 120 feet from the river and closely tracked the Rio Grande stage, generally increasing in late summer or early fall following higher flow events. Water levels in Gambusia Well were consistently very shallow, though the manual well measurement collected in April was 4.25 ft bgs—relatively high for the monitoring record—and occurred outside the normal peak period of later summer and early fall. The last manual measurement taken at TH-10 in WY2019 was 34.80 ft bgs, only 0.45 ft higher than the earliest measurement in 1967, consistent with the lack of directional change in groundwater at this location, and apparently decoupled from within-season precipitation patterns. The last water level reading in WY2019 at Oak Springs #1 was 59.91 ft bgs, indicating an overall decrease of 26.08 ft since the well was dug in 1989. The Southwest Network Collaboration (SWNC) collects data on sentinel springs annually in the late winter and early spring following the network springs monitoring protocol. In WY2019, 18 sentinel site springs were visited at Big Bend NP (February 21, 2019–March 09, 2019). Most springs had relatively few indications of natural and anthropogenic disturbances. Natural disturbances included recent flooding, drying, and wildlife use. Anthropogenic disturbances included flow modifications (e.g., springboxes), hiking trails, and contemporary human use. Crews observed one to seven facultative/obligate wetland plant...
4
Kobayashi, K., A. Ogawa, S. Casner, and C. Bormann. RTP Payload Format for 12-bit DAT Audio and 20- and 24-bit Linear Sampled Audio. RFC Editor, 2002. http://dx.doi.org/10.17487/rfc3190.
Full text
5
Walker, David, and Jeffrey Renfrow. Toxicological reconnaissance of Arsenal? use along the Rio Grande River through Big Bend National Park: Final report. National Park Service, 2024. http://dx.doi.org/10.36967/2302769.
Full textAbstract:
This study examined the biological response of aquatic organisms, collected in situ and from laboratory toxicity testing of water and soil to the herbicide Arsenal? primarily used to decrease the invasive species Arundo donax in the Rio Grande River through Big Bend National Park in Texas (USA). Biological, toxicological, physicochemical, and flow data were collected before, during, and after an Arsenal? treatment from 4 reference and 3 treatment sites. Significant differences existed in ecoregion 24 B-IBI scoring, and in toxicity testing of water and sediment, between treatment and reference sites. Greater toxicity, and a higher inverse relationship to B-IBI scoring, was observed in sediment samples compared to water samples. This could be due to the surfactant nonylphenol ethoxylate (NPE), added to the Arsenal? formulation rather than the active ingredient imazapyr. Care must be implemented with the results of this research due to many confounding variables that occurred during the study period including flash flooding. Although flashy hydrology is relatively common to the region, it can influence aquatic macroinvertebrate assemblage structure, function, and species richness measures with these dropping due to scour and downstream displacement within a reach during, and for some period following, flooding. Therefore, flash flooding would be expected to have some effect on aquatic macroinvertebrate assemblages and subsequent B-IBI scoring. Additionally, flooding will cause some displacement, and deposition, of sediment throughout the study area. This flooding could impact the sediment toxicity results as sediment-bound contaminants could be spread some distance from their origin. Arsenal? treatment occurred during this study near sites Treatment 1 and Treatment 2 on 5/29 and 5/31 2022 respectively. This represented an extreme condition as far as concentration of potential toxicants in the water are concerned and these relatively high concentrations would be expected to have decreased within a relatively short period of time, especially in the water. It was outside of the scope and budget of this project to obtain concentrations of imazapyr or surfactants from sediment or water. Therefore, exact doses of imazapyr or surfactant for response curves could not be obtained. No sample site exists in isolation rather, influences from one reach can significantly impact downstream areas. This is especially true for aquatic ecosystems in arid regions that often exhibit flashy hydrology. However, we believe the findings from this study provide indication of potential toxicity of some magnitude as well as provide direction for management. Decisions of whether the toxic effects of herbicide use to aquatic macroinvertebrates outweigh the beneficial effects of Arundo donax control should be carefully considered.
6
Perkins, C. Guidelines for the Use of Variable Bit Rate Audio with Secure RTP. RFC Editor, 2012. http://dx.doi.org/10.17487/rfc6562.
Full text
7
Moreda, Fekadu, Fernando Miralles-Wilhelm, Raúl Muñoz Castillo, and Pedro Coli Valdes Daussa. Hydro-BID Case Study No 2: Modeling the Impact of Climate Change on Flows of the Rio Piura Using Hydro-BID. Inter-American Development Bank, 2014. http://dx.doi.org/10.18235/0001125.
Full text
8
Duric, A., and S. Andersen. Real-time Transport Protocol (RTP) Payload Format for internet Low Bit Rate Codec (iLBC) Speech. RFC Editor, 2004. http://dx.doi.org/10.17487/rfc3952.
Full text
9
Bruhn, Mark, Fernando Miralles-Wilhelm, James Rineer, and Raúl Muñoz Castillo. Base de Datos de Hidrología Analítica para América Latina y el Caribe. Inter-American Development Bank, 2014. http://dx.doi.org/10.18235/0009595.
Full textAbstract:
El sistema Hydro-BID genera salidas de información en forma de series de tiempo diarias de los flujos estimados para la localidad y el período escogidos. A discreción del usuario, estas salidas pueden ser resumidas en una serie de tiempo mensual. Con el fin de ilustrar las entradas, la operación y salidas del sistema Hydro-BID, el equipo de trabajo preparó un caso de estudio para la distribución de recursos hídricos en la cuenca del Rio Grande en Argentina. La versión inicial del Hydro-BID ha recibido una respuesta entusiasta en las presentaciones a usuarios potenciales y miembros del BID así como de parte de audiencias técnicas externas vía conferencias y talleres. El trabajo realizado durante la Fase 1 se describe en tres Notas Técnicas. Este documento constituye la Nota Técnica 1.
10
Arcia, Diego, Camila Maleronka, Flavia Speyer Carlos, Yara Fonseca Alvez, Jason Hobbs, and Dalve Alexandre Soria Alves. Desenvolvimento orientado ao transporte (DOT) no Rio de Janeiro: projetos piloto no corredor Transcarioca e na Área Central da cidade. Inter-American Development Bank, 2024. http://dx.doi.org/10.18235/0013128.
Full textAbstract:
Esta publicação é parte de um conjunto de trabalhos realizados pelo Banco Interamericano de Desenvolvimento (BID) em parceria com o então Ministério do Desenvolvimento Regional, atual Ministério das Cidades, com recursos do Clean Technology Fund (CTF), no âmbito da Cooperação Técnica (CT) BR-T13941, que tem como objetivo contribuir para melhorar a mobilidade urbana, o desenvolvimento urbano e a sustentabilidade ambiental nas cidades brasileiras por meio do Desenvolvimento Orientado ao Transporte (DOT). O trabalho também contou com o apoio das empresas consultoras Arcadis IBI Group, IMG Rebel, Urbit e Oficina, bem como da Prefeitura Municipal do Rio de Janeiro. O objetivo desta publicação é compartilhar os principais resultados e descobertas do estudo realizado em 2021 sobre a implantação de estratégias DOT e o desenvolvimento de projetos piloto no Rio de Janeiro (RJ)