2,060 research outputs found
Laurel FULKERSON, The Ovidian Heroine as Author. Reading, Writing, and Community in the Heroides.
No full textTordeur Pol. Laurel FULKERSON, The Ovidian Heroine as Author. Reading, Writing, and Community in the Heroides. . In: L'antiquité classique, Tome 76, 2007. p. 332
Laurel FULKERSON, The Ovidian Heroine as Author. Reading, Writing, and Community in the Heroides.
No full textTordeur Pol. Laurel FULKERSON, The Ovidian Heroine as Author. Reading, Writing, and Community in the Heroides. . In: L'antiquité classique, Tome 76, 2007. p. 332
Tony Woodman et Jonathan Powell (Ed.), Author and Audience in Latin Literature
No full textTordeur Pol. Tony Woodman et Jonathan Powell (Ed.), Author and Audience in Latin Literature. In: L'antiquité classique, Tome 63, 1994. pp. 382-383
Looking back
No full textThese days the Government Architect is an influential consultant, who gets the attention of a number of government ministers. A Government Architect doesnt find much time to do any actual building though, and the same will be true for the new Government Architect, Liesbeth van der Pol, who was appointed in August. A look back at the old-fashioned Government Architects and their predecessors
Entre papéis e películas: imaginando novos mundos com Donna Haraway e Jack Halberstam
No full textThis research aimed to analyze the place of fiction in the production of knowledge in queer feminist theory. To this end, I analyze Donna Haraway\u27s uses of science fiction in her work Cyborg Manifesto (1985/2009), and then delve into Jack Halberstam\u27s proposal regarding the potentials present in children\u27s animations in his work The Queer Art of Failure (2011/2020). Both authors demonstrate how fictions are potential sources of knowledge for imagining new worlds and different possibilities for producing existence. Based on an understanding of the strategies used by these two authors to challenge the heterosexual matrix, I subscribe to the queer task of seeking a way out of the colonizing reality that oppresses the dissident population of the cis-heterosexual system. I propose that both authors find fertile ground in these alternative media that can condense abstract theories into more accessible languages, or as Halberstam suggests, they operate with a “low theory”, providing tools for a production of knowledge that escapes the traditional textual formatting, with restrictive norms and elaborate words, the so-called “high theory”.La presente investigación tuvo como objetivo analizar el lugar de la ficción en la producción de conocimiento en la teoría feminista queer. Para ello, analizo los usos que Donna Haraway hace de la ciencia ficción en su obra Cyborg Manifesto (1985/2009), para luego profundizar en la propuesta de Jack Halberstam respecto a las potencialidades presentes en la animación infantil en su obra The Queer Art of Failure (The Queer Art of Failure (The Queer Art of Failure) Queer Art of Failure (El Arte Queer del Fracaso) 2011/2020). Los dos autores demuestran cómo las ficciones son fuentes potenciales de conocimiento para imaginar nuevos mundos y diferentes posibilidades de producir existencia. Desde la comprensión de las estrategias utilizadas por estos dos autores para desafiar la matriz heterosexual, me uno a la queer tarea de buscar una salida a la realidad colonizadora que oprime a la población disidente del sistema cis-heterosexual. Propongo que ambos autores encuentren un terreno fértil en estos medios alternativos que logran condensar teorías abstractas en lenguajes más accesibles, o como sugiere Halberstam, operar con una “teoría baja”, brindando herramientas para la producción de conocimiento que escapa al formato textual tradicional, con normas restrictivas. y palabras elaboradas, la llamada “alta teoría”.A presente pesquisa teve como objetivo analisar o lugar da ficção na produção de conhecimento na teoria feminista queer. Para tal, analiso os usos que Donna Haraway faz da ficção científica em sua obra “Manifesto ciborgue” (1985/2009), para em seguida adentrar na proposta de Jack Halberstam a respeito dos potenciais presentes nas animações infantis em sua obra A Arte queer do fracasso (2011/2020). Os dois autores demonstram como as ficções são potenciais fontes de saberes para se imaginar novos mundos, e diferentes possibilidades de produzir existência. A partir de uma compreensão das estratégias utilizadas por estes dois autores para desafiar a matriz heterossexual, me inscrevo na tarefa queer de buscar uma saída para a realidade colonizadora que oprime a população dissidente do sistema cis-heterossexual. Proponho que ambos os autores encontram um terreno fértil nestas mídias alternativas que conseguem condensar teorias abstratas em linguagens mais acessíveis, ou como sugere Halberstam, operam com uma “baixa teoria”, fornecendo ferramentas para uma produção de conhecimento que foge da tradicional formatação textual, com normas restritivas e palavras rebuscadas, a chamada “alta teoria”
Spatially coherent diffusion of human RNA Pol II depends on transcriptional state rather than chromatin motion
No full textGene transcription by RNA polymerase II (RNAPol II) is a tightly regulated process in the genomic, temporal, and spatial context. Recently, we have shown that chromatin exhibits spatially coherently moving regions over the entire nucleus, which is enhanced by transcription. Yet, it remains unclear how the mobility of RNA Pol II molecules is affected by transcription regulation and whether this response depends on the coordinated chromatin movement. We applied our Dense Flow reConstruction and Correlation method to analyze nucleus-wide coherent movements of RNA Pol II in living human cancer cells. We observe a spatially coherent movement of RNA Pol II molecules over [Image: see text] 1 μm, which depends on transcriptional activity. Inducing transcription in quiescent cells decreased the coherent motion of RNA Pol II. We then quantify the spatial correlation length of RNA Pol II in the context of DNA motion. RNA Pol II and chromatin spatially coherent motions respond oppositely to transcriptional activities. Our study holds the potential of studying the chromatin environment in different nuclear processes
Detecting plume-driven polynyas from dual-pol SAR imagery
No full textAntarctic ocean temperatures are rising due to climate change, causing land ice to melt at increasingly higher rates. Ice shelf bottom melt is a key factor responsible for Antarctic ice mass loss and as such understanding melt processes in the Antarctic is therefore key to more accurately predict how the global sea level will respond to climate change in the foreseeable future. Basal melt results in the formation of both basal melt channels underneath an ice shelf and persistent sea ice wakes (named plume-driven polynyas) at the ice shelf shoreline. The goal of this research is to develop a method that can help to automatically infer basal melt locations along the Antarctic shoreline with significantly increased spatio-temporal resolution compared to previously researched basal melt detection methods.We infer basal melt locations by detecting plume-driven polynyas. We used dual-pol (HH/HV) Sentinel-1 EW SAR data (40x40m resolution) in combination with GLCM textural features as input for a random forest classification that differentiates images as water or ice in four sub-classes: undisturbed ’open’ water, disturbed ’rough’ water, sea ice and (floating) land ice. We assessed what the advantages and limitations of this approach were for plume-driven polynya detection by performing water-ice (sub-class) classifications and examining which GLCM features proved most useful, what GLCM window size is preferred, and how classification can be aided by post-processing classified images.We computed GLCM textures for window sizes w = [5,11,21] and created a classifier for each choice (GLCM5, GLCM11 and GLC21) and compared results to a classifier based on original dual-pol SAR data (BASE). Via cross validated recursive feature elimination we determined that ’sum average’ (HH and HV polarization) and ’difference variance’ (HV polarization) were most useful for separation of water and ice classes (HH_savg, HV_savg and HV_dvar). Our results have shown that using GLCM texture based dual-pol classifiers improves water-ice classification significantly compared to dual-pol only classifiers, although using HH_savg and HV_savg instead of orignal dual-pol data comes at a cost of reduced spatial resolution. Water-ice classification accuracy of BASE was 92.2% (kappa = 84.4%) was increased to 95.9% (kappa = 91.5%) for GLCM5, 96.3% (kappa = 92.7%) for GLCM11 and to 96.5% (kappa = 93.0%) for GLCM21. From a spatial context, GLCM21 showed an insufficient ability to detect small-scaled bodies of water at a sub-kilometer scale. GLCM5 showed unsatisfactory results in terms of sea ice classification. GLCM11 showed highest robustness in both these performance aspects and proved to be most successful classifier for the application of polynya detection. Using an area filter as a post-processing step proved successful when a classifier is based on GLCM data with a window size no larger than w=11. Noise output (small regions of falsely classified open water pixels) was heavily reduced via this form of post-processing and significantly increased polynya detection performance.The final classified product however still contained too many incorrectly classified water regions of similar spatial scales as plume-driven polynyas to be able to apply this algorithm as a reliable automated polynya detection method. We urge to build upon this SAR-based detection method, by using additional non-GLCM input features or using extra post-processing steps, such as temporally filtering water body presence, until results are satisfactory for a fully automated plume-driven polynya detection algorithm. The method presented here has the potential to make detection significantly faster, easier and more accessible than the current methods available. Lastly, in its current state, this method can already be used to validate predicted locations of basal melt by ocean-ice sheet models and DEM-based methods
[[alternative]]On the Critical Path of Van der Pol equation
No full text[[abstract]]在本文中，我們探討范得坡方程式x''+μx'(x^2-1)+x=0在相平面上的一
條特殊軌線 記為y_(∞)(x;μ)，它是范得坡方程式在相平面上的極限
環在某區域中的漸近解。我 們證明在相平面的上半平面中，當μ →
+∞，對於[-1,0]區間中的每個 x，極限環與 y_(∞)(x;μ)的y座標差至
多為O(μ^(-1/3))；更進一步，應用這個結果，可以證明 當μ →
+∞，相平面上每一條從 y 軸出發且在極限環外部的范得坡方程式的軌線
，自 第一次與 x=1 相交於第四象限之後，其與極限環的誤差至多為O(μ
^(-1/3))。
This article is concerned with the special trajectory y_(∞)(x;
μ) which is the leading term of the asymptotic solution
of Van der Pol equation x''+μx'(x^2-1)+x=0 in the phase
plane for some region. We show that in the phase plane,
the difference of this asymptotic solution and the limit
cycle, y_(p)(x), of Van der Pol equation is not greater than
O(μ^(-1/3)) as μ → +∞ for all -1 < x < 0, and use this
result to show that every trajectory of Van der Pol equation
starting from y-axis with initial value bigger than that
of the limit cycle gets close to the limit cycle by O(μ
^(-1/3)) from its first time on for intersecting x=1 in the
fourth quadrant as μ → +∞.
This article is concerned with the special trajectory y_(∞)(x;
Complete set of 6,034 one-per-person, subtype-assigned HIV-1 group M complete pol sequences
No full textComplete set of 6,034 one-per-person, subtype-assigned HIV-1 group M complete pol sequences is in a tab-delimited file containing the aligned pol sequence, GenBank accession number, GenBank author list, GenBank submission title, PubMed ID, country, sample year, and assigned subtype/CR
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