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Mar Caston Palacio

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Poster to be presented at Stochastic Numerics and Statistical Learning: Theory and Applications Workshop 2024, Kaust, Saudi Arabia, https://cemse.kaust.edu.sa/stochnum/events/event/snsl-workshop-2024. In this work we have considered a setting that mimics the Henry problem \cite{Simpson2003,Simpson04_Henry}, modeling seawater intrusion into a 2D coastal aquifer. The pure water recharge from the ``land side'' resists the salinisation of the aquifer due to the influx of saline water through the ``sea side'', thereby achieving some equilibrium in the salt concentration. In our setting, following \cite{GRILLO2010}, we consider a fracture on the sea side that significantly increases the permeability of the porous medium. The flow and transport essentially depend on the geological parameters of the porous medium, including the fracture. We investigated the effects of various uncertainties on saltwater intrusion. We assumed uncertainties in the fracture width, the porosity of the bulk medium, its permeability and the pure water recharge from the land side. The porosity and permeability were modeled by random fields, the recharge by a random but periodic intensity and the thickness by a random variable. We calculated the mean and variance of the salt mass fraction, which is also uncertain. The main question we investigated in this work was how well the MLMC method can be used to compute statistics of different QoIs. We found that the answer depends on the choice of the QoI. First, not every QoI requires a hierarchy of meshes and MLMC. Second, MLMC requires stable convergence rates for $\EXP{g_{\ell} - g_{\ell-1}}$ and $\Var{g_{\ell} - g_{\ell-1}}$. These rates should be independent of $\ell$. If these convergence rates vary for different $\ell$, then it will be hard to estimate $L$ and $m_{\ell}$, and MLMC will either not work or be suboptimal. We were not able to get stable convergence rates for all levels $\ell=1,\ldots,5$ when the QoI was an integral as in \eqref{eq:integral_box}. We found that for $\ell=1,\ldots 4$ and $\ell=5$ the rate $\alpha$ was different. Further investigation is needed to find the reason for this. Another difficulty is the dependence on time, i.e. the number of levels $L$ and the number of sums $m_{\ell}$ depend on $t$. At the beginning the variability is small, then it increases, and after the process of mixing salt and fresh water has stopped, the variance decreases again. The number of random samples required at each level was estimated by calculating the decay of the variances and the computational cost for each level. These estimates depend on the minimisation function in the MLMC algorithm. To achieve the efficiency of the MLMC approach presented in this work, it is essential that the complexity of the numerical solution of each random realisation is proportional to the number of grid vertices on the grid levels.

$Poster_density_driven_with_fracture_MLMC.pdf$ $Poster_density_driven_with_fracture_MLMC.pdf$

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Mastering JNKVV Entrance Exam: Previous Year Question Paper Analysis for MSc Ag Genetics and Plant Breeding Welcome to our comprehensive guide to cracking the JNKVV Entrance Examination for MSc in Agricultural Genetics and Plant Breeding. we'll dive deep into the analysis of previous year question papers, providing you with valuable insights, tips, and strategies to excel in this competitive exam. The Jawaharlal Nehru Krishi Vishwa Vidyalaya (JNKVV) is one of India's premier agricultural universities, and gaining admission to its MSc program in Genetics and Plant Breeding is a significant achievement. This video aims to help you prepare effectively by analyzing past question papers, highlighting important topics, and suggesting the best study strategies. Understanding the Exam Pattern Before we delve into the questions, it's crucial to understand the structure of the JNKVV entrance exam. The exam typically comprises multiple-choice questions (MCQs) that test your knowledge across various domains of genetics and plant breeding. The key areas usually covered include: Fundamentals of Genetics: - Mendelian inheritance - Chromosome structure and function - Genetic variation and mutation Plant Breeding Techniques - Hybridization methods - Selection techniques - Breeding for disease resistance Molecular Genetics - DNA replication, transcription, and translation - Molecular markers in plant breeding - Genomics and genetic engineering 4. Quantitative Genetics: - Heritability and genetic advance - Statistical methods in plant breeding - QTL mapping #### Detailed Question Paper Analysis Now, let's analyze a previous year’s question paper to understand the types of questions asked and the best ways to approach them. Section 1: Fundamentals of Genetics Example Question: Which of the following is NOT a part of Mendel's Laws? - A) Law of Segregation - B) Law of Independent Assortment - C) Law of Dominance - D) Law of Uniformity Analysis: This question tests your basic understanding of Mendelian genetics. To tackle such questions, ensure you are well-versed with the core principles of genetics. Revising basic concepts from standard textbooks like "Principles of Genetics" by Gardner et al. can be highly beneficial. Section 2: Plant Breeding Techniques Example Question: In plant breeding, the method where two plants with desirable traits are crossed is known as: - A) Backcrossing - B) Hybridization - C) Mutation breeding - D) Polyploidy Analysis: Questions in this section often require applied knowledge of breeding techniques. Focus on understanding the different methods of plant breeding, their applications, and examples. Books like "Plant Breeding: Principles and Methods" by B.D. Singh can provide comprehensive coverage of these topics.

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APM webinar hosted by the Scotland Network on 14 May 2024. Speakers: Chris Drysdale and Peter Huggett An interactive session discussing how Project Managers can identify mental health symptoms, provide tools to help themselves and others, plus also increase the capabilities of the Project Management function. This webinar was held on 14 May 2024. The covid-19 pandemic led to concerns about a worsening of mental health & wellbeing across the world and increased awareness in both society and the workplace. This webinar looks to advise the benefits of having a Mental Health First Aid function in the workplace whilst also providing tools and techniques that can be readily used and applied to yourself and colleagues. Additionally, there are wider benefits to Project Management which will be proposed and discussed.

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Photos from our Spring Gala 2024. Thank you for making our 2024 Spring Gala unforgettable! Whether you attended or supported us with a donation, we extend our heartfelt thanks for celebrating School-Community Partnerships alongside ExpandED Schools. Special appreciation to our honorees, Rachel Skaistis and Cravath, Swaine, & Moore LLP, for their unwavering support in advancing educational equity. Your contributions have profoundly impacted countless young New Yorkers, and we’re proud to have you as part of our community. Our gratitude also extends to our Board of Directors, sponsors, city partners, community-based organizations, and the inspiring young people who joined us. Your support fuels our mission, and we’re endlessly thankful for your dedication. While we celebrate our gala’s success, our work continues. As you view the evening’s highlights, consider how you can further empower young New Yorkers and educators with your donation, no matter the size. Donate today: https://www.expandedschools.org/support-our-work/donate/

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