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« “Le Temple de Bocace” de George Chastelain ou l’autorité problématique de l’historiographe », p. 293-314
No full textInternational audienceSeen as a continuation of Boccaccio’s ‹De Casibus virorum illustrium›, ‹The Temple of Bocaccio› was written by George Chastelain between 1463 and 1465 to console the Queen of England, Margaret of Anjou, who had been exiled to Bur-gundy following the deposition of her husband, Henry VI, in 1461 and the accession to the throne of Edward IV. In this treaty, George Chastelain’s authority appears problematic in the face of Marguerite d’Anjou’s power and the prestige of his prede-cessor, whom he intends to praise. The effacement of the author’s ‹I› in the form of his passivity –the treatise is the result of a vision received between waking and sleep-ing– can be explained by his desire to speak under cover, in order to freely address a political and moral lesson to the queen and the great men of this world. The author thus succeeds in asserting his own authority in three ways: by inventing the dream setting, in which a voice invests him with the mission of continuator; by creating the metaphor of the temple; and finally by promoting the glory of the writer, capable of eclipsing that of the illustrious unfortunates whose fate he has recounted
La Santé Environnementale des Territoires : Comment mobiliser les données environnementales ouvertes pour analyser les profils de multi contamination des territoires et évaluer leur poids sur les inégalités spatiales de santé ?
No full textNational audienc
Entre reconnaissance et concurrences : ce que nous dit l'institutionnalisation du socio-sport
No full textInternational audienc
Counting Solutions Under Cardinality Constraints: Structure Counts in Counting
No full textInternational audienceModel counting is a powerful extension of constraint reasoning that, instead of finding a solution to a constraint system, allows to identify the number of such solutions. Cardinality constraints are used to filter solutions of a certain quality by restricting the number of elements that can be added to the solution. Naturally, one would like to combine both in order to count the number of solutions of good quality. Unfortunately, the two concepts do not get along so well as (1) cardinality constraints may not be parsimonious (due to auxiliary variables, the system’s number of solutions may change in an uncontrolled way) and (2) such constraints may destroy structural properties, which are crucial for the performance of modern solvers. This article provides a systematic study of existing cardinality constraints in the light of model counting, observing that none of them are both, parsimonious and treewidth-preserving. We present structure-aware cardinality constraints that are parsimonious and guaranteed to increase the input’s treewidth only in a controlled way. Detailed experiments reveal that our encodings outperform existing ones
Community Quality and Influence Maximization: An Empirical Study
No full textInfluence maximization in social networks plays a vital role in applications such as viral marketing, epidemiology, product recommendation, opinion mining, and counter-terrorism. A common approach identifies seed nodes by first detecting disjoint communities and subsequently selecting representative nodes from these communities. However, whether the quality of detected communities consistently affects the spread of influence under the Independent Cascade model remains unclear. This paper addresses this question by extending a previously proposed disjoint community detection method, termed α-Hierarchical Clustering, to the influence maximization problem under the Independent Cascade model. The proposed method is compared with an alternative approach that employs the same seed selection criteria but relies on communities of lower quality obtained through standard Hierarchical Clustering. The former is referred to as Hierarchical Clustering-based Influence Maximization, while the latter, which leverages higher-quality community structures to guide seed selection, is termed α-Hierarchical Clustering-based Influence Maximization. Extensive experiments are performed on multiple real-world datasets to assess the effectiveness of both methods. The results demonstrate that higher-quality community structures substantially improve information diffusion under the Independent Cascade model, particularly when the propagation probability is low. These findings underscore the critical importance of community quality in guiding effective seed selection for influence maximization in complex networks.</div
From “Who Cares” to “What They Care About”: The Impact of Corporate Governance on Environmental and Social Performance in China
No full textInternational audienceResearch Question/Issue This study investigates whether and how corporate governance influences environmental and social performance in Chinese firms. Two mechanisms of corporate governance are examined: external (shareholder‐focused) and internal (CSR strategy‐ and management‐focused). Research Findings/Insights The findings reveal a significant positive effect of corporate governance on environmental and social performance in China, mainly driven by firms' CSR strategy‐focused governance practices. State ownership of enterprises significantly moderates how governance affects both environmental and social performance, with positive and negative moderation observed for external and internal governance mechanisms, respectively. Furthermore, an environmental regulation shock accentuates the positive influence of corporate governance on environmental performance but not on social performance. Theoretical/Academic Implications The main theoretical insight reflects a shift in the governance discourse from “conflict of interest” to “differentiation of interest” between shareholders and managers regarding sustainability concerns. The results shed light on the considerable differences between shareholder and manager behaviors toward environmental and/or social practices. Practitioner/Policy Implications This study informs firms and regulators on corporate governance's nonfinancial implications in China. Reforming governance characteristics can be a key factor for firms aiming to improve their environmental and social performance, specifically by re‐envisioning their internal governance mechanisms that are CSR strategy‐oriented. From the government perspective, we provide insights into how, through ownership and regulatory interventions, governance mechanisms tend to balance environmental and social performance in China
Flooding the Brains: Natural Disasters, Student Outcomes, and the Urban-Rural Gap in Human Capital
No full textInternational audienceThis study provides evidence that natural disasters negatively affect student outcomes, potentially explaining the lower academic achievement of students in rural areas compared with their urban counterparts in developing countries. Using data from the Colombian school census, I estimate a difference-in-differences strategy that exploits variation from an unusual rainfall shock affecting more than 2 million people in both urban and rural Colombia. The results show that these disruptions increase school dropout rates and reduce learning outcomes for at least a decade. The effects are concentrated in rural schools, while students in urban schools remain unaffected. I explore several mechanisms and rule out the possibility that the effects are driven by selective migration or a loss of educational resources. Instead, I find evidence that the rainfall shock exacerbated poverty, pushing poorer rural children into unemployment and longer work hours
Enhanced chromium removal from contaminated groundwater using modified bentonite-sand liners: Experimental and simulation insights
No full textInternational audienc
NovaMatic Industries: Working Capital and Cash Flow Management
No full textThe Case Centre, case study 125-0028-1, teaching note 125-0028-8, teaching note supplement 125-0028-8
Green IPOs: a new paradox in environment or economic sustainability
No full textInternational audiencePurpose Green finance has traditionally focused on environmental sustainability and protection. However, it is imperative to explore this concept in terms of achieving economic goals sustainably while preserving the planet for future generations. This study examines the pricing efficiency of green and non-green Initial Public Offerings (IPOs) listed on the Alternative Investment Market (AIM), identifies factors affecting environmental and economic sustainability and determines the dynamic relationship between a firm’s environmental performance and IPO pricing in the short and long term. Design/methodology/approach Using a sample of 655 IPOs listed on AIM between 2005 and 2020, the study employs stochastic frontier analysis, three-stage least squares and Johansen co-integration techniques to test its hypotheses. Findings The results indicate that green IPOs tend to be underpriced in the short term but outperform non-green IPOs over longer investment horizons. This pattern suggests a negative short-run relationship between environmental performance and initial returns, likely attributable to the higher compliance and disclosure costs incurred by firms with stronger environmental credentials. These upfront costs may reduce initial investor returns. In contrast, the long-term performance of green IPOs surpasses that of their non-green counterparts, reflecting the market’s eventual recognition of their sustainability orientation. Furthermore, the analysis identifies a significant co-movement between a firm’s greenness index and its aftermarket pricing behavior, implying that environmental orientation plays a meaningful role in enhancing long-term economic sustainability. Research limitations/implications Our results corroborate the notion that high-quality financial statements can mitigate information asymmetries. Green IPOs encounter less ex-ante uncertainty due to their reduced environmental risk profile. This diminution in the information gap between informed and uninformed investors concerning green IPOs translates into lower price inefficiency in the marketplace. Practical implications Our findings offer critical insights for market participants, regulators, and policymakers. They underscore the importance of governance mechanisms in influencing firms’ environmental behaviors and highlight the financial implications of green initiatives in the short and long term. Social implications The board is pivotal in a firm’s decision to go green. Independent board members with strong industry connections can positively impact a firm’s propensity to adopt green practices. Such independence fosters optimistic market perceptions and can help alleviate the “legitimacy deficit” often experienced by IPO firms. This “responsible look,” emanating from board representation, sends a powerful message to investors and market analysts about the intrinsic value of the firm. Originality/value This study contributes to the literature by developing a greenness index and analyzing the performance of IPOs on AIM over short and long horizons. It also examines the co-integration between IPO greenness and aftermarket pricing behavior, offering new insights into the impact of environmental performance on economic sustainability