Ramesh Sharma

Abstract: At the end of the day, the lesson learnt was so simple... With online and offline connections, the world is a global village (McLuhan, 1962) and a butterfly flapping its wings in Asia can cause a hurricane all around the world (Lorenz, 1972). Currently, it seems that the global education system is in the middle of this hurricane. These times, where we are all witnessing developments warily, are certainly interesting and strange, but the hope is that lessons will have been learned once things hopefully return to normal. Though there were early warnings to be prepared (White, Ramirez, Smith, & Plonowski, 2010) and already ongoing interruptions to education (Briggs, 2018; GCPEA, 2018), this is the first crisis to occur on the global scale in the digital knowledge age, and there will be socio-cultural, economic, and political consequences in the wake of this crisis. In other words, the educational landscape will feel the rush of air from the butterfly’s flapping wings to the full extent.

Abstract: Uncertain times require prompt reflexes to survive and this study is a collaborative reflex to better understand uncertainty and navigate through it. The Coronavirus (Covid-19) pandemic hit hard and interrupted many dimensions of our lives, particularly education. As a response to interruption of education due to the Covid-19 pandemic, this study is a collaborative reaction that narrates the overall view, reflections from the K-12 and higher educational landscape, lessons learned and suggestions from a total of 31 countries across the world with a representation of 62,7% of the whole world population. In addition to the value of each case by country, the synthesis of this research suggests that the current practices can be defined as emergency remote education and this practice is different from planned practices such as distance education, online learning or other derivations. Above all, this study points out how social injustice, inequity and the digital divide have been exacerbated during the pandemic and need unique and targeted measures if they are to be addressed. While there are support communities and mechanisms, parents are overburdened between regular daily/professional duties and emerging educational roles, and all parties are experiencing trauma, psychological pressure and anxiety to various degrees, which necessitates a pedagogy of care, affection and empathy. In terms of educational processes, the interruption of education signifies the importance of openness in education and highlights issues that should be taken into consideration such as using alternative assessment and evaluation methods as well as concerns about surveillance, ethics, and data privacy resulting from nearly exclusive dependency on online solutions.

Abstract: Inspired by a result of Boyer and Galicki, we prove that a complete K-contact gradient soliton is compact Einstein and Sasakian. For the non-gradient case we show that the soliton vector field is a Jacobi vector field along the geodesics of the Reeb vector field. Next we show that among all complete and simply connected K-contact manifolds only the unit sphere admits a non-Killing holomorphically planar conformal vector field (HPCV). Finally we show that, if a (k, μ)-contact manifold admits a non-zero HPCV, then it is either Sasakian or locally isometric to E3 or En+1 × Sn (4).

Abstract: Abstract The Metaverse has been the centre of attraction for educationists for quite some time. This field got renewed interest with the announcement of social media giant Facebook as it rebranding and positioning it as Meta. While several studies conducted literature reviews to summarize the findings related to the Metaverse in general, no study to the best of our knowledge focused on systematically summarizing the finding related to the Metaverse in education. To cover this gap, this study conducts a systematic literature review of the Metaverse in education. It then applies both content and bibliometric analysis to reveal the research trends, focus, and limitations of this research topic. The obtained findings reveal the research gap in lifelogging applications in educational Metaverse. The findings also show that the design of Metaverse in education has evolved over generations, where generation Z is more targeted with artificial intelligence technologies compared to generation X or Y. In terms of learning scenarios, there have been very few studies focusing on mobile learning, hybrid learning, and micro learning. Additionally, no study focused on using the Metaverse in education for students with disabilities. The findings of this study provide a roadmap of future research directions to be taken into consideration and investigated to enhance the adoption of the Metaverse in education worldwide, as well as to enhance the learning and teaching experiences in the Metaverse.

Abstract: Natural fibres will take a major role in the emerging “green” economy based on energy efficiency, the use of renewable materials in polymer products, industrial processes that reduce carbon emissions and recyclable materials that minimize waste. Natural fibres are a kind of renewable resources, which have been renewed by nature and human ingenuity for thousands of years. They are also carbon neutral; they absorb the equal amount of carbon dioxide they produce. These fibers are completely renewable, environmental friendly, high specific strength, non-abrasive, low cost, and bio-degradability. Due to these characteristics, natural fibers have recently become attractive to researchers and scientists as an alternative method for fibers reinforced composites. This review paper summarized the history of natural fibers and its applications. Also, this paper focused on different properties of natural fibers (such as hemp, jute, bamboo and sisal) and its applications which were used to substitute glass fiber.

Abstract: We review and discuss possible causes for the appearance of local anisotropy (principal stresses unequal) in self-gravitating systems and present its main consequences. We consider both Newtonian and general relativistic examples. The results emerging from the stability analysis hint at the potential relevance of local anisotropy in the evolution of self-gravitating objects. In this respect particular attention is devoted to the Jeans instability criterion and to the occurrence of cracking in anisotropic spheres. A selection of solutions to Einstein equations for anisotropic matter is analyzed. The specific consequences derived from local anisotropy in these solutions, are exhibited. The differences between two different definitions of energy, within a slowly evolving distribution of anisotropic fluid, are discussed in detail. The conspicuous role played by the Weyl and shear tensors and their relationship with anisotropy of the fluid are brought out.

Abstract: by J. Biggs and C. Tang, Maidenhead, England, Open University Press, 2007, 360 pp., £29.99, ISBN-13: 978-0-335-22126-4

Abstract: My work includes writing cryptographic specifications for Thales products , providing assistance to development teams, technology watch, writing scientific reports to external clients, and operational software development. The title of my thesis was \" Gaussian Sampling in Lattice-Based Cryptography \" , and I was directed by Vadim Lyubashevsky (ÉNS) and Sylvain Lachartre (Thales). I used algorithmic, statistical and algebraic tools to make lattice-based cryptography more practical and also worked on efficient implementations of it. I developped and qualified a cryptographic library, directed by Sylvain Lachartre and Olivier Orcière. I worked on improving the polynomial selection for the NFS sieve, directed by Paul Zimmermann. My work was integrated in the CADO-NFS project and led to the publication of a research article. I studied elliptic curves and their applications in cryptography, directed by Marc Hindry.