Subject: NA Digest, V. 16, # 46 NA Digest Wednesday, December 21, 2016 Volume 16 : Issue 46 Today's Editor: Daniel M. Dunlavy Sandia National Labs [log in to unmask] Today's Topics: Chebfun v5.6.0 release Release 3.0.1 of H2Lib New Book, Barriers and Transport in Unsteady Flows Nonconforming and DG Methods, Italy, Jan 2017 Computational Physiology, Norway, Mar 2017 Finite Element Rodeo, USA, Mar 2017 Non-Smooth Distributed Parameter Systems, Germany, Oct 2017 Assistant Professor Position, Tufts Univ Research Associate Position, NA, The Univ of Manchester Postdoc Position, Computational Physics, Los Alamos National Laboratory Postdoc Positions, IMA PhD Positions, Mathematical Sciences, The Univ of Texas at Dallas PhD Positions, Mathematics of Planet Earth, Imperial and Reading, UK Subscribe, unsubscribe, change address, or for na-digest archives: http://www.netlib.org/na-digest-html/faq.html Submissions for NA Digest: http://icl.cs.utk.edu/na-digest/ ------------------------------------------------------- From: Nick Trefethen [log in to unmask] Date: December 16, 2016 Subject: Chebfun v5.6.0 release The Chebfun team is pleased to announce the release of Chebfun v5.6.0 for numerical computing with functions in 1D, 2D, and 3D. Some noteworthy features are listed below; see http://www.chebfun.org/news/ for full information. * DISKFUN for functions on the unit disk. * GALLERYSPHERE collection of functions on the unit sphere * TRIGRATINTERP and TRIGREMEZ for periodic rational approximation * AAA for rational approximation on real or complex domains * ADJOINT for computing the adjoint of a chebop. * CHEBFUN2/EIG for eigenvalues of a chebfun2 (kernel of operator) * Improvements to SPIN/SPIN2/SPIN3 for stiff PDEs * New capabilities for composing chebfun/chebfun2/chebfun3 objects. * List of publications at http://www.chebfun.org/publications . We hope you enjoy the new release. If you have questions or comments, we encourage you to post to the Chebfun users group, https://groups.google.com/forum/#!forum/chebfun-users. ------------------------------------------------------- From: Steffen Boerm [log in to unmask] Date: December 18, 2016 Subject: Release 3.0.1 of H2Lib We are happy to announce the release 3.0.1 of our H2Lib package. H2Lib is an open-source software library for hierarchical matrices and H^2-matrices. Using state-of-the-art arithmetic algorithms, we can construct efficient and robust preconditioners for elliptic partial differential equations and integral equations, and modern compression techniques (e.g. GCA) allow us to handle boundary integral equations with millions of degrees of freedom efficiently. H2Lib features: efficient arithmetic algorithms for hierarchical matrices (matrix multiplication, inversion, factorization), efficient compression algorithms for integral equations (interpolation, cross approximation, hybrid cross approximation), and efficient conversion algorithms for creating H^2-matrices (converting hierarchical matrices on the fly). The new release adds support for directional compression of Helmholtz integral operators (DH^2-matrix representation and algebraic recompression), accelerated quadrature functions (SSE, AVX, OpenCL), and lowest-order Raviart-Thomas finite elements (Darcy's equation of groundwater flow). H2Lib is open source under the GNU public license and can be downloaded directly from GitHub or via our homepage http://www.h2lib.org ------------------------------------------------------- From: Bruce Bailey [log in to unmask] Date: December 14, 2016 Subject: New Book, Barriers and Transport in Unsteady Flows Barriers and Transport in Unsteady Flows: A Melnikov Approach by Sanjeeva Balasuriya 2016 / xiv + 264 pages / Softcover / 978-1-611974-57-7 / List Price $84.00 / SIAM Member Price $58.80 / MM21 Fluids that mix at geophysical or microscales tend to form well-mixed areas and regions of coherent blobs. The Antarctic circumpolar vortex, which mostly retains its structure while moving unsteadily in the atmosphere, is an example of a coherent structure. How do such structures exchange fluid with their surroundings? What is the impact on global mixing? What is the "boundary" of the structure, and how does it move? Can these questions be answered from time-varying observational data? This book addresses these issues from the perspective of the differential equations that must be obeyed by fluid particles. In these terms, identification of the boundaries of coherent structures (i.e., "flow barriers"), quantification of transport across them, control of the locations of these barriers, and optimization of transport across them are developed using a rigorous mathematical framework. The concepts are illustrated with an array of theoretical and applied examples that arise from oceanography and microfluidics. To order or for more about this book, including links to its table of contents, preface, and index, please visit http://bookstore.siam.org/MM21/. ------------------------------------------------------- From: Pietro Zanotti [log in to unmask] Date: December 20, 2016 Subject: Nonconforming and DG Methods, Italy, Jan 2017 The workshop Nonconforming and Discontinuous Galerkin Methods will be held at the Department of Mathematics "F. Enriques" of the Universita degli Studi di Milano on Friday, January 27, 2017. The list of speakers includes Paola Antonietti; Blanca Ayuso de Dios; Franco Brezzi; Alexandre Ern; Dietmar Gallistl; Thirupathi Gudi; Guido Kanschat; and Charalambos Makridakis (to be confirmed). The participation is free; see also http://www.mat.unimi.it/users/veeser/nc-dg-2017/ For organization reasons, please send an e-mail to [log in to unmask] if you plan to attend. ------------------------------------------------------- From: Valeriya Naumova [log in to unmask] Date: December 14, 2016 Subject: Computational Physiology, Norway, Mar 2017 We would like to advertise the Modelling Week on Computational Physiology: Risk Stratification Models and Tools (ComPh), which will be held at Simula Research Laboratory, Oslo, Norway, on March 20-24, 2017. The 5-day event will provide the unique training opportunities for students in natural sciences to explore and design computational tools for modelling and data analysis from existing and developing experimental modalities in various biomedical fields (cardiology, cancer, etc.). Starting with a gentle introduction to biostatistics, system biology, computational physiology, and big data analysis, the course will discuss state-of-the-art techniques in the corresponding fields as well as their translatability to scientific and industrial applications as well as routine clinical use. Practical projects outlining industrial and societal challenges will give the opportunity to have hands on experience and apply the techniques to real-life problems. This event, co-funded by the MI-NET COST Action, aims at contributing to promote the industrial-driven research and innovation at universities as well as to encourage female involvement in natural sciences. The event is open to everyone with an interest in the topics and techniques of the school but registration is required. There are five stipends available to fully cover costs associated with travel and accommodation. The event is jointly organised by Simula Research Laboratory and Helmholtz Zentrum Munich. For further information, please visit the event's website: https://www.simula.no/education/courses/comph-modelling-week ------------------------------------------------------- From: Annalisa Quaini [log in to unmask] Date: December 15, 2016 Subject: Finite Element Rodeo, USA, Mar 2017 The 2017 Finite Element Rodeo will be held at the University of Houston March 3-4. The Rodeo is an annual informal conference on finite element methods that rotates between several universities in Texas and Louisiana. Further information and registration details can be found at: http://www.mathematics.uh.edu/seminars-and-events/Finite_Element_Rodeo_2017/ ------------------------------------------------------- From: Winnifried Wollner [log in to unmask] Date: December 20, 2016 Subject: Non-Smooth Distributed Parameter Systems, Germany, Oct 2017 Optimization of Infinite Dimensional Non-Smooth Distributed Parameter Systems from Oct. 4-6 2017 at TU Darmstadt (Germany). https://www3.mathematik.tu-darmstadt.de/index.php?id=3150 Although registration will be possible until end of May it is advisable to book your hotels early as available rooms can only be guaranteed until the end of January. ------------------------------------------------------- From: James Adler [log in to unmask] Date: December 15, 2016 Subject: Assistant Professor Position, Tufts Univ The Department of Mathematics invites applications for a Norbert Wiener Assistant Professorship in Scientific Computing or Computational Science to begin September 1, 2017, and lasting three years. Preference will be given to candidates with expertise in high performance or extreme-scale computing applied to research areas that overlap with those of Tufts faculty. Particular areas of interest include applications in Computational PDEs, Numerical Linear Algebra, Mathematical Modeling in Economics, and Computational Neuroscience. The teaching load will be two courses per semester. Doctorate required. Applicants must show promise of outstanding research and evidence of excellent teaching. Applications should include a cover letter, curriculum vitae, a research statement, and a teaching statement. All of these documents should be submitted electronically through https://www.mathjobs.org. In addition, applicants should arrange for three letters of recommendation to be submitted electronically on their behalf through https://www.mathjobs.org. If a recommender cannot submit online, we will also accept signed PDF attachments sent to [log in to unmask] or paper letters mailed to Search Committee Chair, Department of Mathematics, 503 Boston Avenue, Tufts University, Medford, MA 02155. Review of applications will begin on January 1,2017, and will continue until the position is filled. Tufts University is an Affirmative Action/Equal Opportunity employer. We are committed to increasing the diversity of our faculty. Members of underrepresented Groups are strongly encouraged to apply. https://www.mathjobs.org/jobs/jobs/9869 ------------------------------------------------------- From: Paul Ledger [log in to unmask] Date: December 14, 2016 Subject: Research Associate Position, NA, The Univ of Manchester A 1 year research associate position in numerical analysis for improved land mine detection at the University of Manchester (UoM), UK, has just been advertised. The research associate will work with Professor Bill Lionheart (School of Mathematics, UoM), and in collaboration with Dr Paul D. Ledger (College of Engineering, Swansea University, UK) and Dr Timo Betcke (Department of Mathematics, UCL, UK), to develop improved metal detection algorithms for the location and discrimination of buried objects. For further details about the vacancy please see https://www.jobs.manchester.ac.uk/displayjob.aspx?jobid=12682 For enquires please contact Professor Bill Lionheart [log in to unmask] Closing Date: 15th January 2017 ------------------------------------------------------- From: Mikhail Shashkov [log in to unmask] Date: December 14, 2016 Subject: Postdoc Position, Computational Physics, Los Alamos National Laboratory Located in northern New Mexico, Los Alamos National Laboratory (LANL) is a multidisciplinary research institution engaged in strategic science on behalf of national security. LANL enhances national security by ensuring the safety and reliability of the U.S. nuclear stockpile, developing technologies to reduce threats from weapons of mass destruction, and solving problems related to energy, environment, infrastructure, health, and global security concerns. The X-Computational Physics (XCP) Division develops multiphysics simulation codes to support national nuclear security applications--particularly the assessment of the safety, security, and effectiveness of the stockpile and emerging threats. The division's focus is in computational physics, developing validated codes, models, and algorithms through research in the division and integration of the broader Laboratory's work in theory, modeling, and experiment. The XCP-4 (Methods and Algorithms) Group develops new methods and algorithms for multiphysics codes. The XCP-4 Group is seeking candidates for postdoctoral position focused on methods and implementation of Reconnection-based Arbitrary Lagrangian-Eulerian algorithms for high-speed, compressible, multimaterial flows. Minimum Job Requirements: Experience with Lagrangian and Arbitrary Lagrangian-Eulerian Methods on general unstructured (polygonal and polyhedral) meshes. Publication or other evidence (e.g., code documentation), which confirms such experience. Working knowledge of interface reconstruction methods. Working knowledge of relevant algorithms of computational geometry (e.g., point in polygon, intersection of polygons); Work with a diverse group of colleagues from varying backgrounds on research covering multiple physics areas. Demonstrate a commitment to quality research, technical and scientific excellence, professional integrity, and personal initiative. Demonstrate and maintain excellence in written and verbal communication. Desired Skills: Experience with 3D unstructured meshes. Experience for solid dynamics modeling. Experience in parallel code development and MPI / supercomputing experience. Education: Ph.D. in Applied Mathematics (or related area) completed within the last five years or soon to be completed. Notes to Applicants: Applicants should include a comprehensive cover letter addressing their qualifications and how those qualifications meet the job requirements. http://www.lanl.gov/careers/career-options/jobs/index.php Vacancy Name: IRC53880 ------------------------------------------------------- From: Rebecca Malkovich [log in to unmask] Date: December 19, 2016 Subject: Postdoc Positions, IMA The IMA has several openings for Industrial Postdoctoral Fellowships. The positions are intended for mathematical scientists at an early stage of their career. Preference will be given to those who have completed their Ph.D. within three years of the start of the appointment. Jointly funded by IMA industrial partners and the IMA, the fellowships begin August 30, 2017, and can be renewed for up to a total of two years. The postdocs will devote 50% effort to projects onsite at the IMA's partner company and 50% effort on their own research under the mentorship of a University of Minnesota faculty. The position carries an annual salary of $65,000 and an allowance of up to $3,000 for professional travel. IMA Industrial Postdoctoral Fellowships are ideal for mathematical scientists who wish to pursue careers in industry or academic positions that involve industrial interactions. All industry projects involve data and their analysis. Previous data science experience is desirable but not required. Consideration of applications will begin on January 19, 2017. Please see https://www.mathjobs.org/jobs/fellowship/9852 for more details. ------------------------------------------------------- From: Susan Minkoff [log in to unmask] Date: December 19, 2016 Subject: PhD Positions, Mathematical Sciences, The Univ of Texas at Dallas The Department of Mathematical Sciences at the University of Texas at Dallas invites applications for our masters and doctoral programs in (1) Mathematics and (2) Statistics, and masters programs in (3) Actuarial Science and (4) Bioinformatics and Computational Biology. The Department includes faculty with diverse interests in mathematics and statistics. For a listing of faculty research areas see http://www.utdallas.edu/math/research/ . For students in the Ph.D. programs, teaching and research assistantships are available which cover tuition and provide a competitive stipend. The priority application deadline for Fall 2017 admission is January 15, 2017. However, applications will be accepted and ongoing review will continue until all available positions are filled. For more information about the graduate programs in Mathematical Sciences at UTD, please email us at [log in to unmask] or visit our website: http://www.utdallas.edu/math/ . The Department of Mathematical Sciences at The University of Texas at Dallas is also soliciting applications from well-qualified U.S. citizens, nationals, and permanent residents interested in participating in our NSF-Supported Enriched Doctoral Training (EDT) project "Team Training Mathematical Scientists Through Industrial Collaborations." The EDT project at UT Dallas supplements students' PhD training in Mathematics or Statistics with a one-year interdisciplinary research project posed by one of our external partners in business, industry and government. EDT student trainees collaborate with a team of students, mathematics and statistics faculty, and an external partner on an industrial research problem. They develop the knowledge and communication skills required to tackle applied research, obtain summer internships, and gain experience which could lead to future employment. For further information on UTD's EDT program including sample projects and our external partner organizations go to: http://www.utdallas.edu/EDT or contact Dr. Sue Minkoff at [log in to unmask] . ------------------------------------------------------- From: Jennifer Scott [log in to unmask] Date: December 21, 2016 Subject: PhD Positions, Mathematics of Planet Earth, Imperial and Reading, UK The Centre for Doctoral Training in the Mathematics of Planet Earth has PhD positions available at Imperial College London and the University of Reading plus one joint position at Imperial College and the National Physical Laboratory. Applications to the fully funded 4-year doctoral programme are currently being accepted for the next intake of students who will start in September 2017. Applications are sought from those who have (or expect to receive) a first class degree in mathematics, statistics, physics or closely related subject. For further details of the programme and how to apply, see http://mpecdt.org/ Please apply before 31 January 2017. An interview day will be held at the University of Reading on Wednesday, 22 February 2017. ------------------------------------------------------- End of Digest **************************