Alien Registration- Blais, Marcel (Saint John Plantation, Aroostook County)

https://digitalmaine.com/alien_docs/32651/thumbnail.jp

Centre de recherches politiques Raymond-Aron – CRPRA

Agnès Antoine, professeur agrégée Atelier de lecture. Les sentiments sociaux et politiques : la sympathie L’atelier de lecture de la formation doctorale « Études politiques » a pour vocation de faire découvrir ou redécouvrir aux étudiants du master et aux doctorants ou auditeurs qui le souhaitent les grands auteurs, anciens et contemporains, de la philosophie politique et de la sociologie, autour d’un thème général. Cette année, l’atelier a été centré sur le thème des « sentiments sociaux et ..

Algal biomarkers as a proxy for pCO2: Constraints from late Quaternary sapropels in the eastern Mediterranean

Records of carbon dioxide concentrations (partial pressure expressed as pCO2) over Earth’s history provide trends that are critical to understand our changing world. To better constrain pCO2 estimations, here we test organic pCO2 proxies against the direct measurements of pCO2 recorded in ice cores. Based on the concept of stable carbon isotopic fractionation due to photosynthetic CO2 fixation (Ɛp), we use the stable carbon isotopic composition (δ13C) of the recently proposed biomarker phytol (from all photoautotrophs), as well as the conventionally used alkenone biomarkers (from specific species) for comparison, to reconstruct pCO2 over several Quaternary sapropel formation periods (S1, S3, S4, and S5) in the eastern Mediterranean Sea. The reconstructed pCO2 values are within error of the ice core values but consistently exceed the ice core values by ca. 100 µatm. This offset corresponds with atmospheric disequilibrium of present day CO2[aq] concentrations in the Mediterranean Sea from global pCO2, equivalent to ca. 100 µatm, although pCO2 estimates derived from individual horizons within each sapropel do not covary with the ice core values. This may possibly be due to greater variability in local CO2[aq] concentration changes in the Mediterranean, as compared with the global average pCO2, or possibly due to biases in the proxy, such as variable growth rate or carbon-concentrating mechanisms. Thus, the offset is likely a combination of physiological or environmental factors. Nevertheless, our results demonstrate that alkenone- and phytol-based pCO2 proxies yield statistically similar estimations (P-value = 0.02, Pearson’s r-value = 0.56), and yield reasonable absolute estimations although with relatively large uncertainties (± 100 µatm)

A search for structurally similar cellular internal ribosome entry sites

Internal ribosome entry sites (IRES) allow ribosomes to be recruited to mRNA in a cap-independent manner. Some viruses that impair cap-dependent translation initiation utilize IRES to ensure that the viral RNA will efficiently compete for the translation machinery. IRES are also employed for the translation of a subset of cellular messages during conditions that inhibit cap-dependent translation initiation. IRES from viruses like Hepatitis C and Classical Swine Fever virus share a similar structure/function without sharing primary sequence similarity. Of the cellular IRES structures derived so far, none were shown to share an overall structural similarity. Therefore, we undertook a genome-wide search of human 5′UTRs (untranslated regions) with an empirically derived structure of the IRES from the key inhibitor of apoptosis, X-linked inhibitor of apoptosis protein (XIAP), to identify novel IRES that share structure/function similarity. Three of the top matches identified by this search that exhibit IRES activity are the 5′UTRs of Aquaporin 4, ELG1 and NF-kappaB repressing factor (NRF). The structures of AQP4 and ELG1 IRES have limited similarity to the XIAP IRES; however, they share trans-acting factors that bind the XIAP IRES. We therefore propose that cellular IRES are not defined by overall structure, as viral IRES, but are instead dependent upon short motifs and trans-acting factors for their function

Alien Registration- Blais, Marcel (Saint John Plantation, Aroostook County)

https://digitalmaine.com/alien_docs/32651/thumbnail.jp

Du crayon à l'imprimante: alphabétisation, micro-informatique et sémiotique

L'implantation du micro-ordinateur dans un groupe d'alphabétisation - Les micro-ordinateurs à l'école des adultes qui s'alphabétisent - Bilan d'une expérimentation : la micro-informatique en alphabétisation - Épreuve d'évaluation du niveau d'alphabétisation - Pratiques d'alphabétisation : quelques repères - Territorialités du texte «analphabète»

De l'éthique environnementale à l'écologie politique Apories et limites de l'éthique environnementale

Les objectifs de l'éthique environnementale et de l'écologie politique diffèrent. L'éthique environnementale, telle qu'elle s'est développée ces dernières années, a cherché, entre autres, à préciser la nature du lien entre l'Humain et la Nature. Cette démarche philosophique ne permet pas de définir les obligations environnementales valables pour tous dans une situation de pluralisme axiologique. Ce texte poursuit deux objectifs. À des fins d'illustration, nous présentons tout d'abord quatre approches représentatives de l'éthique environnementale contemporaine (Section 2). Nous rappelons les principales objections soulevées à leur endroit et le cul-de-sac théorique ou pratique dans lequel elles se trouvent engagées. Nous entreprenons ensuite (Section 3) de fournir l'esquisse d'une alternative que nous appelons simplement « l'écologie politique ». Nous en dressons les contours et surtout la spécificité par rapport à l'éthique environnementale. Les objets de l'éthique environnementale et de l'écologie politique sont peutêtre complémentaires mais certainement pas coextensifs.The objectives of environmental ethics and political ecology differ. Environmental ethics, such as it developed in the last few years, sought, among other things, to specify the nature of the link between Human Beings and Nature. This philosophical approach does not allow the definition of environmental obligations to be imposed on all in the context of moral pluralism. This article pursues two goals. To illustrate our argument, we will first present four representative approaches to contemporary environmental ethics (Part 2). We will recall the principal objections raised against them and the theoretical and practical dead-ends in which they culminate. We will then (Part 3) propose the outline of an alternative which we call political ecology. We will then trace its boundaries and mainly its particularities in relation to environmental ethics. The objects of environmental ethics and of political ecology may be complementary but they are certainly not coextensive

De l'éthique environnementale à l'écologie politique Apories et limites de l'éthique environnementale

Les objectifs de l'éthique environnementale et de l'écologie politique diffèrent. L'éthique environnementale, telle qu'elle s'est développée ces dernières années, a cherché, entre autres, à préciser la nature du lien entre l'Humain et la Nature. Cette démarche philosophique ne permet pas de définir les obligations environnementales valables pour tous dans une situation de pluralisme axiologique. Ce texte poursuit deux objectifs. À des fins d'illustration, nous présentons tout d'abord quatre approches représentatives de l'éthique environnementale contemporaine (Section 2). Nous rappelons les principales objections soulevées à leur endroit et le cul-de-sac théorique ou pratique dans lequel elles se trouvent engagées. Nous entreprenons ensuite (Section 3) de fournir l'esquisse d'une alternative que nous appelons simplement « l'écologie politique ». Nous en dressons les contours et surtout la spécificité par rapport à l'éthique environnementale. Les objets de l'éthique environnementale et de l'écologie politique sont peutêtre complémentaires mais certainement pas coextensifs.The objectives of environmental ethics and political ecology differ. Environmental ethics, such as it developed in the last few years, sought, among other things, to specify the nature of the link between Human Beings and Nature. This philosophical approach does not allow the definition of environmental obligations to be imposed on all in the context of moral pluralism. This article pursues two goals. To illustrate our argument, we will first present four representative approaches to contemporary environmental ethics (Part 2). We will recall the principal objections raised against them and the theoretical and practical dead-ends in which they culminate. We will then (Part 3) propose the outline of an alternative which we call political ecology. We will then trace its boundaries and mainly its particularities in relation to environmental ethics. The objects of environmental ethics and of political ecology may be complementary but they are certainly not coextensive

AN ANALYSIS OF THE SUPPLY CURVE FOR LIQUIDITY RISK THROUGH BOOK DATA

We use order book data combined with tick data to analyze the supply curve models of liquidity issues in stock and option market trading. We show that supply curves really exist, and further that for highly liquid stocks they are linear. For slightly less liquid stocks the supply curve tends to be jump linear.Liquidity risk, supply curve, hedging risk, semimartingale, arbitrage, option