Non-centrosymmetric Na3Nb4As3O19

A new non-centrosymmetric compound, tris­odium tetra­niobium triarsenic nona­deca­oxide, Na3Nb4As3O19, has been synthesized by a solid-state reaction at 1123 K. The structure consists of AsO4 tetra­hedra and NbO6 octa­hedra sharing corners to form a three-dimensional framework containing two types of tunnels running along the c axis, in which the sodium ions are located. Na+ cations occupying statistically several sites, respectively, are surrounded by seven, six and four O atoms at distances ranging from 2.08 (1) to 2.88 (4) Å. The title structure is compared with those containing the same groups, viz. M 2XO13 and M 2 X 2O17 (M = transition metal, and X = As or P)

Artisans du progrès

Version anglaise disponible dans la Bibliothèque numérique du CRDI: Tunisian industry : nurtured or overprotected?Version espagnole disponible dans la Bibliothèque numérique du CRDI: Industria Tunecina : alimentada o sobre protegida

Artesanos del progreso

Versión en inglés disponible en la Biblioteca Digital del IDRC: Tunisian industry : nurtured or overprotected?Versión en francés disponible en la Biblioteca Digital del IDRC: Economie en Tunesie : après le pétrole, l'industri

Yet Another Creative Adjustment of Coloniality. A Critical Discourse Analysis of Connecting Classrooms through Global Learning School Links

Global Citizenship Education is increasingly being adopted by national policymakers in response to the mandates of the international agenda, which recognizes the interconnectedness and interdependence of people on a global scale and advocates for global equality and social justice. Connecting Classrooms Through Global Learning is a global program that promotes educational links between schools in the UK and schools in the Global South to achieve these aims. This thesis explores the paradoxical approaches that underpin the discursive construction of these links. In theory, they advocate reciprocity and equality through a critical and social justice-oriented pedagogy. In practice, they reproduce dominant discourses that marginalize the Global South to serve the UK national interests. Using Critical Discourse Analysis as a methodological approach, this thesis investigated the discursive indications of neoliberal, liberal humanist, and neocolonial discourses in these links and their impact on social relations, identities and subjectivities of teachers and students on both sides. Applying a decolonial framework revealed the interplay of these discourses in inculcating identities and enacting social relations that are consistent with the configurations of the global market, the humanist rhetoric of ‘common good’, and the modern/colonial imaginary, but at odds with the Global Citizenship Education pursuit of equality and social justice. While continuing to relegate the Global South ways of knowing and ways of being, binary representations and unequal power relations maintain the hegemony of the UK as a global power at a time marked by post-Brexit national anxieties and economic uncertainties

Artisans of progress

Spanish version available in IDRC Digital Library: Industria Tunecina : alimentada o sobre protegida ?French version available in IDRC Digital Library: Economie en Tunisie : après le pétrole, l'industri

Perspectives of Muslim and Minority Canadian Youth on Hate Speech and Social Media

In this article, we highlight the perspectives of marginalized Canadian youth regarding hate speech on social media. Specifically, our research focus is on the complexity and intersectionality involved in cyber violence, especially in relation to marginalized identities. Twenty-five participants aged 18 to 25 studying at a central Canadian University (from an initial sample of 90 participants) who self-identified as victims of hate speech were invited to share their experiences and narrate their stories. Research results demonstrate that online hate speech is growing in Canada to an extent where it is has become normalized. This has serious implications for the well-being of Canadian youth - both perpetrators and victims of hate speech. The main targets of hate speech on social media in Canada are immigrants and minorities, particularly Muslims. Results show that online hate speech has significant consequences for the lives of Canadian youth. The repercussions for the victim's mental and physical well-being manifest in problems ranging from alienation, identity issues, deterioration of psychological and physical health to cyber and in-person bullying, and much more. The study concludes that while there are definite links between the rise of online hate speech, deterioration of mental and physical health, and increased attacks on immigrants and minorities, not much action has gone into policymaking and education to correct the situation.