NEWSLETTER No
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
The Brazilian Case
The Brazilian Case The influence of the protests and the World Cup 2014 on the Brazilian presidential elections Written by Jeroen Haans December 2014 Presented to the Faculty of Social Science Aalborg University In Partial Fulfillment of the Requirements for the Degree of Master of Science in Development and International Relations Supervisor: Steen Fryba Christensen Abstract In this thesis the interconnecting aspects of the Brazilian protests, the FIFA World Cup 2014 and the Brazilian presidential elections are investigated. Those unique elements combined in roughly one years’ time, make it ‘The Brazilian Case’. The data that is collected in order to answer the research questions is collected through a combination of desk- and field research. The desk research focuses on the protests, the process previous to the presidential elections and the final outcome. The field research attributes to the investigation of the role of the World Cup in voting behavior. The year 2007 is chosen as starting point for this research because in this year Brazil was officially awarded host for the World Cup 2014. The analysis starts with describing the socio-economic context leading-up to the protests and the environment in which they took place. The administrations of Lula and Dilma are examined and the causes of the protests discussed. In a particular section, the World Cup and its attribution to the protests and its indirect influence on voting behavior are addressed. Even though changes in attitude by the Brazilian population towards their representatives are detectable, the feelings of dissatisfaction did not lead to the election of a new president. -
Mathematical
2-12 JULY 2011 MATHEMATICAL HOST AND VENUE for Students Jacobs University Scientific Committee Étienne Ghys (École Normale The summer school is based on the park-like campus of Supérieure de Lyon, France), chair Jacobs University, with lecture halls, library, small group study rooms, cafeterias, and recreation facilities within Frances Kirwan (University of Oxford, UK) easy walking distance. Dierk Schleicher (Jacobs University, Germany) Alexei Sossinsky (Moscow University, Russia) Jacobs University is an international, highly selective, Sergei Tabachnikov (Penn State University, USA) residential campus university in the historic Hanseatic Anatoliy Vershik (St. Petersburg State University, Russia) city of Bremen. It features an attractive math program Wendelin Werner (Université Paris-Sud, France) with personal attention to students and their individual interests. Jean-Christophe Yoccoz (Collège de France) Don Zagier (Max Planck-Institute Bonn, Germany; › Home to approximately 1,200 students from over Collège de France) 100 different countries Günter M. Ziegler (Freie Universität Berlin, Germany) › English language university › Committed to excellence in higher education Organizing Committee › Has a special program with fellowships for the most Anke Allner (Universität Hamburg, Germany) talented students in mathematics from all countries Martin Andler (Université Versailles-Saint-Quentin, › Venue of the 50th International Mathematical Olympiad France) (IMO) 2009 Victor Kleptsyn (Université de Rennes, France) Marcel Oliver (Jacobs University, Germany) For more information about the mathematics program Stephanie Schiemann (Freie Universität Berlin, Germany) at Jacobs University, please visit: Dierk Schleicher (Jacobs University, Germany) math.jacobs-university.de Sergei Tabachnikov (Penn State University, USA) at Jacobs University, Bremen The School is an initiative in the framework of the European Campus of Excellence (ECE). -
View 2019 Edition Online
Emmanuel Emmanuel College College MAGAZINE 2018–2019 Front Court, engraved by R B Harraden, 1824 VOL CI MAGAZINE 2018–2019 VOLUME CI Emmanuel College St Andrew’s Street Cambridge CB2 3AP Telephone +44 (0)1223 334200 The Master, Dame Fiona Reynolds, in the new portrait by Alastair Adams May Ball poster 1980 THE YEAR IN REVIEW I Emmanuel College MAGAZINE 2018–2019 VOLUME CI II EMMANUEL COLLEGE MAGAZINE 2018–2019 The Magazine is published annually, each issue recording college activities during the preceding academical year. It is circulated to all members of the college, past and present. Copy for the next issue should be sent to the Editors before 30 June 2020. News about members of Emmanuel or changes of address should be emailed to [email protected], or via the ‘Keeping in Touch’ form: https://www.emma.cam.ac.uk/members/keepintouch. College enquiries should be sent to [email protected] or addressed to the Development Office, Emmanuel College, Cambridge CB2 3AP. General correspondence concerning the Magazine should be addressed to the General Editor, College Magazine, Dr Lawrence Klein, Emmanuel College, Cambridge CB2 3AP. Correspondence relating to obituaries should be addressed to the Obituaries Editor (The Dean, The Revd Jeremy Caddick), Emmanuel College, Cambridge CB2 3AP. The college telephone number is 01223 334200, and the email address is [email protected]. If possible, photographs to accompany obituaries and other contributions should be high-resolution scans or original photos in jpeg format. The Editors would like to express their thanks to the many people who have contributed to this issue, with a special nod to the unstinting assistance of the College Archivist. -
Numerical Computation with Rational Functions
NUMERICAL COMPUTATION WITH RATIONAL FUNCTIONS (scalars only) Nick Trefethen, University of Oxford and ENS Lyon + thanks to Silviu Filip, Abi Gopal, Stefan Güttel, Yuji Nakatsukasa, and Olivier Sète 1/26 1. Polynomial vs. rational approximations 2. Four representations of rational functions 2a. Quotient of polynomials 2b. Partial fractions 2c. Quotient of partial fractions (= barycentric) 2d. Transfer function/matrix pencil 3. The AAA algorithm with Nakatsukasa and Sète, to appear in SISC 4. Application: conformal maps with Gopal, submitted to Numer. Math. 5. Application: minimax approximation with Filip, Nakatsukasa, and Beckermann, to appear in SISC 6. Accuracy and noise 2/26 1. Polynomial vs. rational approximation Newman, 1964: approximation of |x| on [−1,1] −휋 푛 퐸푛0 ~ 0.2801. ./푛 , 퐸푛푛 ~ 8푒 Poles and zeros of r: exponentially clustered near x=0, exponentially diminishing residues. Rational approximation is nonlinear, so algorithms are nontrivial. poles There may be nonuniqueness and local minima. type (20,20) 3/26 2. Four representations of rational functions Alpert, Carpenter, Coelho, Gonnet, Greengard, Hagstrom, Koerner, Levy, Quotient of polynomials 푝(푧)/푞(푧) SK, IRF, AGH, ratdisk Pachón, Phillips, Ruttan, Sanathanen, Silantyev, Silveira, Varga, White,… 푎푘 Beylkin, Deschrijver, Dhaene, Drmač, Partial fractions 푧 − 푧 VF, exponential sums Greengard, Gustavsen, Hochman, 푘 Mohlenkamp, Monzón, Semlyen,… Berrut, Filip, Floater, Gopal, Quotient of partial fractions 푛(푧)/푑(푧) Floater-Hormann, AAA Hochman, Hormann, Ionita, Klein, Mittelmann, Nakatsukasa, Salzer, (= barycentric) Schneider, Sète, Trefethen, Werner,… 푇 −1 Antoulas, Beattie, Beckermann, Berljafa, Transfer function/matrix pencil 푐 푧퐵 − 퐴 푏 IRKA, Loewner, RKFIT Druskin, Elsworth, Gugercin, Güttel, Knizhnerman, Meerbergen, Ruhe,… Sometimes the boundaries are blurry! 4/26 2a. -
The David Crighton Lecture Professor Frank Kelly CBE FRS Thursday 12 May 2016 at 6.15 P.M
The David Crighton Lecture Professor Frank Kelly CBE FRS Thursday 12 May 2016 at 6.15 p.m. followed by a reception at The Royal Society, Carlton House Terrace, London, SW1Y 5AG Registration will open at 5.45 p.m. Mathematics and Financial Markets Abstract: A substantial proportion of mathematics graduates, at both first degree and doctoral level, enter the financial services sector. This is hardly surprising given the importance of the sector to the economy, and the role of mathematical modelling in the valuation of instruments and the assessment of risk. What is striking is that, with some notable exceptions, few mathematicians have been actively engaged in the design of financial markets. This is undoubtedly a serious challenge with parallels from other large-scale complex networks: to design a distributed system, linking self-interested and intelligent agents, so that the outcome is effective and efficient. How would an ideal market operate, to allow liquidity between long-term investors to be provided by short- term traders? In the second part of the talk I outline some preliminary work, joint with Elena Yudovina, on this question. I describe a simplified and analytically tractable model of a limit order book where the dynamics are driven by stochastic fluctuations between supply and demand. The model has a natural interpretation for a highly traded market on short time scales where there is a separation between the time scale of trading, represented in the model, and a longer time scale on which fundamentals change. There has been considerable discussion recently of the effects of competition between multiple high- frequency traders, and of proposals aimed to slow down markets. -
The Effect of Compression and Expansion on Stochastic Reaction Networks
IMT School for Advanced Studies, Lucca Lucca, Italy The Effect of Compression and Expansion on Stochastic Reaction Networks PhD Program in Institutions, Markets and Technologies Curriculum in Computer Science and Systems Engineering (CSSE) XXXI Cycle By Tabea Waizmann 2021 The dissertation of Tabea Waizmann is approved. Program Coordinator: Prof. Rocco De Nicola, IMT Lucca Supervisor: Prof. Mirco Tribastone, IMT Lucca The dissertation of Tabea Waizmann has been reviewed by: Dr. Catia Trubiani, Gran Sasso Science Institute Prof. Michele Loreti, University of Camerino IMT School for Advanced Studies, Lucca 2021 To everyone who believed in me. Contents List of Figures ix List of Tables xi Acknowledgements xiii Vita and Publications xv Abstract xviii 1 Introduction 1 2 Background 6 2.1 Multisets . .6 2.2 Reaction Networks . .7 2.3 Ordinary Lumpability . 11 2.4 Layered Queuing Networks . 12 2.5 PEPA . 16 3 Coarse graining mass-action stochastic reaction networks by species equivalence 19 3.1 Species Equivalence . 20 3.1.1 Species equivalence as a generalization of Markov chain ordinary lumpability . 27 3.1.2 Characterization of SE for mass-action networks . 27 3.1.3 Computation of the maximal SE and reduced net- work . 28 vii 3.2 Applications . 31 3.2.1 Computational systems biology . 31 3.2.2 Epidemic processes in networks . 33 3.3 Discussion . 36 4 DiffLQN: Differential Equation Analysis of Layered Queuing Networks 37 4.1 DiffLQN .............................. 38 4.1.1 Architecture . 38 4.1.2 Capabilities . 38 4.1.3 Syntax . 39 4.2 Case Study: Client-Server dynamics . 41 4.3 Discussion . -
Public Engagement, Storytelling and Complexity in Maths Communication
Dipartimento di Scienze Pure e Applicate Corso di Dottorato: Scienze di Base e Applicazioni Curriculum Scienze della Complessità – ciclo XXX Ph.D. Thesis Public Engagement, Storytelling and Complexity in Maths Communication Supervisor Candidate Prof. Gian Italo Bischi Prof. Andrea Capozucca Dottorato in Scienze della Complessità Ciclo XXX – A.A. 2016/2017 Settore Scientifico Disciplinare MAT/04 – SECS-S/06 To Francesca who made all of this possible Contents List of figures .................................................................................................................. v List of tables .................................................................................................................. vii Acknowledgements .................................................................................................................. viii Chapter 1 Introduction ............................................................................................. 1 Chapter 2 Articles in Lettera Matematica Pristem .................................................. 10 2.1 Article 1: Chris Budd ....................................................................... 10 2.2 Article 2: Alex Bellos ...................................................................... 25 2.3 Article 3: Andrew Jeffrey ................................................................ 38 Chapter 3 From Science Communication to Mathematics Communication ........... 52 3.1 Why to communicate? .................................................................... -
Type Checking Physical Frames of Reference for Robotic Systems
PhysFrame: Type Checking Physical Frames of Reference for Robotic Systems Sayali Kate Michael Chinn Hongjun Choi Purdue University University of Virginia Purdue University USA USA USA [email protected] [email protected] [email protected] Xiangyu Zhang Sebastian Elbaum Purdue University University of Virginia USA USA [email protected] [email protected] ABSTRACT Engineering (ESEC/FSE ’21), August 23–27, 2021, Athens, Greece. ACM, New A robotic system continuously measures its own motions and the ex- York, NY, USA, 16 pages. https://doi.org/10.1145/3468264.3468608 ternal world during operation. Such measurements are with respect to some frame of reference, i.e., a coordinate system. A nontrivial 1 INTRODUCTION robotic system has a large number of different frames and data Robotic systems have rapidly growing applications in our daily life, have to be translated back-and-forth from a frame to another. The enabled by the advances in many areas such as AI. Engineering onus is on the developers to get such translation right. However, such systems becomes increasingly important. Due to the unique this is very challenging and error-prone, evidenced by the large characteristics of such systems, e.g., the need of modeling the phys- number of questions and issues related to frame uses on developers’ ical world and satisfying the real time and resource constraints, forum. Since any state variable can be associated with some frame, robotic system engineering poses new challenges to developers. reference frames can be naturally modeled as variable types. We One of the prominent challenges is to properly use physical frames hence develop a novel type system that can automatically infer of reference. -
Dynamic Extension of Typed Functional Languages
Dynamic Extension of Typed Functional Languages Don Stewart PhD Dissertation School of Computer Science and Engineering University of New South Wales 2010 Supervisor: Assoc. Prof. Manuel M. T. Chakravarty Co-supervisor: Dr. Gabriele Keller Abstract We present a solution to the problem of dynamic extension in statically typed functional languages with type erasure. The presented solution re- tains the benefits of static checking, including type safety, aggressive op- timizations, and native code compilation of components, while allowing extensibility of programs at runtime. Our approach is based on a framework for dynamic extension in a stat- ically typed setting, combining dynamic linking, runtime type checking, first class modules and code hot swapping. We show that this framework is sufficient to allow a broad class of dynamic extension capabilities in any statically typed functional language with type erasure semantics. Uniquely, we employ the full compile-time type system to perform run- time type checking of dynamic components, and emphasize the use of na- tive code extension to ensure that the performance benefits of static typing are retained in a dynamic environment. We also develop the concept of fully dynamic software architectures, where the static core is minimal and all code is hot swappable. Benefits of the approach include hot swappable code and sophisticated application extension via embedded domain specific languages. We instantiate the concepts of the framework via a full implementation in the Haskell programming language: providing rich mechanisms for dy- namic linking, loading, hot swapping, and runtime type checking in Haskell for the first time. We demonstrate the feasibility of this architecture through a number of novel applications: an extensible text editor; a plugin-based network chat bot; a simulator for polymer chemistry; and xmonad, an ex- tensible window manager. -
November, 2019 1 Petia M. Vlahovska Department of Engineering
November, 2019 Petia M. Vlahovska Department of Engineering Sciences and Applied Mathematics McCormick School of Engineering and Applied Science Northwestern University 2145 Sheridan Road Evanston, IL 60208, USA email: [email protected] web: http://people.esam.northwestern.edu/~vlahovska Tel. /office/ +1 (847) 491-8782 Research Interests: fluid-structure interaction in Stokes flow, interfacial flows, electrohydrodynamics, active fluids, soft matter, rheology, mechanics of biomembranes. 1 Education 8/03 Ph.D. Chemical Engineering, Yale University. Thesis: “Dynamics of a surfactant-covered drop and the non-Newtonian rheology of emulsions” Advisors: Prof. Michael Loewenberg and Prof. Jerzy Blawzdziewicz 2001 M.Phil. Mechanical Engineering, Yale University 1999 M.S. Chemical Engineering, Yale University 6/96 M.Sc. Post-graduate program in “Separation processes in the industry and environmental protection” Laboratory of Chemical Physics and Engineering (renamed to Department of Chemical Engineering), University of Sofia “St. Kliment Ohridski”, Bulgaria Thesis: “Modeling the drying of solvent coatings on continuous webs” Advisors: Dr. Richard Aust and Prof. Franz Durst (LSTM, University of Erlangen, Germany), Prof. Krassimir Danov (University of Sofia, Bulgaria) 6/94 M.Sc. Chemistry, University of Sofia “St. Kliment Ohridski” (Bulgaria) Concentration: chemical physics and theoretical chemistry Thesis: “Diffusion-controlled adsorption kinetics in micellar surfactant solutions” Advisor: Prof. Krassimir Danov 2 Professional appointments -
Curriculum Vitae: Marc Andre Hesse 2202 W
CURRICULUM VITAE:MARC ANDRE HESSE 2202 W North Loop Blvd. Phone: (512) 471-0768 Apt. # 240 Fax: (512) 232-1913 Austin, TX 78756 email: [email protected] U.S.A. [email protected] web: http://www.jsg.utexas.edu/hesse PROFESSIONAL APPOINTMENTS 2016 – current Associate professor of Geological Sciences, University of Texas at Austin 2009 – 2016 Assistant professor of Geological Sciences, University of Texas at Austin 2008 – 2009 Postdoctoral scholar in Geological Sciences, Brown University 2006 & 2007 Reservoir simulation research team, Chevron Energy Technology Company 1999 Summer intern, Hawaii Scientific Drilling Project PROFESSIONAL PREPARATION 2009 Postdoc Geological Sciences Brown University Advisors: Y. Liang & E. M. Parmentier Topic: Multiscale modeling of the physics and chemistry of melting and melt migration. 2008 Ph.D. Petroleum Engineering Stanford University Advisors: H. Tchelepi & F. M. Orr Jr. Thesis: Mathematical modeling and multiscale simulation of CO2 storage in saline aquifers. 2003 M.Phil. Fluid Flow University of Cambridge Advisor: J. Lie Thesis: Numerical simulation of axis-symmetric rising bubbles. 2002 M.S. Oceanography M.I.T. - W.H.O.I. Joint Program Advisors: T. Grove & N. Shimizu Thesis: Absarokites from Western Mexico: Constraints on mantle wedge conditions. 2000 Hon. BSc Geology University of Edinburgh Advisor: G. Graham Thesis: Metamorphic rocks of the southern Tayvallich peninsula. 1998 Vordiplom Geologie Technische Universitat¨ Munchen¨ HONOURS AND AWARDS 2015 Outstanding Research Award Jackson School of Geosciences SSD Appreciation Award UT Services for Students with Disabilities 2014 US Junior Oberwolfach Fellowship National Science Foundation 2013 Editors Citation for Excellence in Refereeing Geophysical Research Letters Junior Scientist Prize Society of Industrial and Applied Mathematics Activity Group on Geosciences G. -
Sixth Form Transition Support Pack
A-Level Transition Support Pack A Level Transition Support Pack The aim of this support pack is to give you the opportunity to explore some of the best strategies for studying A Levels, as well as providing recommended tasks for each of the A Level courses. You are not required to complete all of the tasks and reading, they are just suggestions for you to explore and you shouldn’t spend more than 3 hours on them. Please do not submit this work to teachers at school as it is not designed for marking, just to promote your interest and understanding of the subject. One big change from GCSE to A Level is that you will be expected to read more widely than just the course textbook. Please save links to useful websites, the names of good books and useful articles as they will come in handy over the next years in preparation for your A Level exams. So if you come across other books, resources and websites which provoke your interest further, and if you have time to read them, please save these details for when school resumes as it’ll be so useful to share in a future class discussion. However, be aware not to sign up for information from websites or publications that ask for your personal details, including your email address, as these could be used for marketing or sales purposes. Contents A Level Study Skills………………………………………………………………………………………………………………………Pg.4 Ancient History …………………………………………………………………………………………………………………………..Pg.5 Art & Design (Fine Art) ………………………..………………………………………………………………………………………Pg.6 Art & Design (3D Design/Graphic Communication)…….……………………………………………………………….Pg.7