211 resultados para Dogma.
Resumo:
There is growing interest in the role that apex predators play in shaping terrestrial ecosystems and maintaining trophic cascades. In line with the mesopredator release hypothesis, Australian dingoes (Canis lupus dingo and hybrids) are assumed by many to regulate the abundance of invasive mesopredators, such as red foxes Vulpes vulpes and feral cats Felis catus, thereby providing indirect benefits to various threatened vertebrates. Several recent papers have claimed to provide evidence for the biodiversity benefits of dingoes in this way. Nevertheless, in this paper we highlight several critical weaknesses in the methodological approaches used in many of these reports, including lack of consideration for seasonal and habitat differences in activity, the complication of simple track-based indices by incorporating difficult-to-meet assumptions, and a reduction in sensitivity for assessing populations by using binary measures rather than potentially continuous measures. Of the 20 studies reviewed, 15 of them (75%) contained serious methodological flaws, which may partly explain the inconclusive nature of the literature nvestigating interactions between invasive Australian predators. We therefore assert that most of the “growing body of evidence” for mesopredator release is merely an inconclusive growing body of literature only. We encourage those interested in studying the ecological roles of dingoes relative to invasive mesopredators and native prey species to account for the factors we identify, and caution the value of studies that have not done so.
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The studies of Allen (2011) and Allen et al. (2011) recently examined the methodology underpinning claims that dingoes provide net benefits to biodiversity by suppressing foxes and cats. They found most studies to have design flaws and/or observational methods that preclude valid interpretations from the data, describing most of the current literature as ‘wild dogma. In this short supplement, we briefly highlight the roles and implications of wild dogma for wild dog management in Australia. We discuss nomenclature, and the influence that unreliable science can have on policy and practice changes related to apex predator management.
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Purpose:
A number of independent gene expression profiling studies have identified transcriptional subtypes in colorectal cancer (CRC) with potential diagnostic utility, culminating in publication of a CRC Consensus Molecular Subtype classification. The worst prognostic subtype has been defined by genes associated with stem-like biology. Recently, it has been shown that the majority of genes associated with this poor prognostic group are stromal-derived. We investigated the potential for tumor misclassification into multiple diagnostic subgroups based on tumoral region sampled.
Experimental Design:
We performed multi-region tissue RNA extraction/transcriptomic analysis using Colorectal Specific Arrays on invasive front, central tumor and lymph node regions selected from tissue samples from 25 CRC patients.
Results:
We identified a consensus 30 gene list which represents the intratumoral heterogeneity within a cohort of primary CRC tumors. Using a series of online datasets, we showed that this gene list displays prognostic potential (HR=2.914 (CI 0.9286-9.162) in stage II/III CRC patients, but in addition we demonstrated that these genes are stromal derived, challenging the assumption that poor prognosis tumors with stem-like biology have undergone a widespread Epithelial Mesenchymal Transition (EMT). Most importantly, we showed that patients can be simultaneously classified into multiple diagnostically relevant subgroups based purely on the tumoral region analysed.
Conclusions:
Gene expression profiles derived from the non-malignant stromal region can influence assignment of CRC transcriptional subtypes, questioning the current molecular classification dogma and highlighting the need to consider pathology sampling region and degree of stromal infiltration when employing transcription-based classifiers to underpin clinical decision-making in CRC.
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UANL
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UANL
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A leitura que Manuel Laranjeira (1877-1912) faz do conceito budista nirvana não difere essencialmente da mais comum no Ocidente do século XIX. Aparentemente, a única particularidade da sua análise é ser de cariz médico. Defende-se neste texto que este ensaio, contextualizado no conjunto da produção de Laranjeira e de outros autores portugueses seus coevos – sobretudo Guerra Junqueiro e Teixeira de Pascoaes – tem, no entanto, outras virtualidades de leitura, no que concerne à cultura portuguesa. Por um lado, enquanto análise do pessimismo, diagnostica ou adivinha um “nirvana” nacional. Por outro lado, parece anunciar, ainda que de forma negativa, uma linha do pensamento e da cultura portuguesa que se debruçou sobre o Oriente e o Budismo.
Resumo:
O estudo analisa criticamente os fundamentos das atuais diretrizes nacionais para o ensino médio brasileiro, dando especial enfoque à sua coerência com tendências mundiais e seus nexos com recomendações de agências internacionais para reformas educativas nos países emergentes. Discute, outrossim, as vicissitudes e peculiaridades do processo de formulação das referidas diretrizes e sugere o aprofundamento da discussão, indicando aspectos polêmicos que merecem maior reflexão.
Resumo:
Die antilateinischen Traktate von Gregorios Palamas und Barlaam von Kalabrien stellten für die serbischen Übersetzer des 14. Jahrhunderts eine grosse Herausforderung dar – nicht nur wegen ihres dogmatischen Inhalts, sondern auch wegen des ausgeprägt polemischen Charakters ihrer Argumentation. In diesem Aufsatz wird die argumentative Form der zwei Traktate („opuscula“ ) Barlaams von Kalabrien analysiert, die in cod. Dečani 88 enthalten sind (fol. 38r-81r). Der zweite von ihnen (fol. 69v-81r) richtet sich an ein griechisches (orthodoxes) Auditorium; die Anreden an die Lateiner, die sich darin finden, haben rein rhetorischen Charakter. Der erste Traktat (fol. 39r-69r), der während der Unionsverhandlungen des Jahres 1334/1335 entstand, hat jedoch eine für die byzantinische Unionspolemik eher ungewöhnliche Form: der Dialog mit der Gegenseite ist hier keine rhetorische Fiktion, sondern ein ernstes Anliegen des Autors. Dies hat bereits bei der Rezeption des Traktats im griechisch-athonitischen Milieu den Verdacht geweckt, Barlaam habe den Lateinern unzulässige Zugeständnisse gemacht. Barlaam hat versucht, diesen Verdacht durch metakommunikative Kommentare zu entkräften, die ausschliesslich in der serbisch-kirchenslavischen Übersetzung von Dečani 88 enthalten sind. Der Übersetzer der Traktate hat deren argumentative Form im wesentlichen nicht angetastet und nur gelegentlich versucht, die Zugehörigkeit der einzelnen Argumente dem Leser durch Marginalscholien deutlich zu machen.
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von Leopold Stein
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von M. Wiener
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von S. Kaatz