2024-2025. Province Wide BJ's MST Follows the Ontario science curriculum. Graphics processing units (GPUs) are commonly used for high performance computing (HPC). Pandas, Scikit-Learn, etc. This book teaches the basics of the underlying theory of data analysis, and then reinforces that knowledge with carefully chosen, realistic scenarios. WestGrid runs training activities year-round, ranging from online webinars to in-person workshops and summer schools. ️ ⏳ ===== Just do whatever I can do now ️ Finish the summary of last week's seminar. Found insideThis book presents an state-of-the-art account of the successful application of main- and transition metal mediated syntheses. It will stimulate new ideas and initiate further research in all areas of this fascinating chemistry. ... On June 1, 2021, the SHARCNET Cloud will be powered off and decommissioned. Computational Biophysics standard 2008, the introduction of, 2021-2022 Introduction to Advanced Research Computing (ARC) Courses, Introduction to Advanced Research Computing, 2021-2022 IntroARC: Introduction to the Shell, 2021-2022 IntroARC: Introduction to Scheduling, 2021-2022 IntroARC: Introduction to Python, 2021-2022 IntroARC: Introduction to Machine Learning, 2021-2022 IntroARC: Introduction to Parallel Computing, 2021-2022 IntroARC: Introduction to Fortran, 2021-2022 IntroARC: Introduction to GPU Programming, 2021-2022 IntroARC: Introduction to CMake, 2021-2022 IntroARC: Introduction to Visualization, 2021-2022 IntroARC: Introduction to Singularity. Senior Research Programmer, Theoretical and Computational Biophysics Group and NIH Center for Macromolecular Modeling and Bioinformatics Mr. Stone is the lead developer of VMD, a high performance tool for preparation, analysis, and visualization of biomolecular simulations used by over 100,000 researchers all over the world. Stock-Flow Modelling in a Post Keynesian Framework, 3 hours, Post Keynesian Winter School, Greno- ble University, December 08, 2015. 8 January 2021: Early-bird registration deadline 1 February, 2021: Winter School begins. Apart from the Compute Ontario Summer School Central, which will be hosted in Toronto by SciNet from June 11 to June 15, 2018, there are two other instances of the 2018 Compute Ontario summer school: One hosted by SHARCNET at Western University (May 28-Jun 1) one hosted by CAC at Queen’s University (Jul 30-Aug 3). You will also need a headset with (optionally) a microphone. Found inside – Page 1Helpfully organized around keywords of materiality, values, embodiment, affect, labor, and situatedness, this comprehensive volume is ideal for classrooms. Scroll down to the bottom of the page for that course, click the "Enrol me" button. B. Jiang on 22nd May: 13:10-23:59 EST. Access is restricted to Compute Canada authenticated users only, SHARCNET Summer School 2021 - Second (Partial) Offering. automatically granted access to this common area. Examples and exercises will be based on parallelization of common computing problems. The course will proceed with presentation and live demonstration using Google Colab and eventually will help the student to run his/her code on Graham cluster in Compute Canada. Found inside – Page iProviding an extensive treatment of essential topics such as Gaussian elimination, inner products and norms, and eigenvalues and singular values, this text can be used for an in-depth first course, or an application-driven second course in ... The common area contains: a link to the Summer School 2021 Slack used during courses, an email link to submit a ticket to help@sharcnet.ca concerning Summer School 2021, and, a Summer School 2021 announcements forum. receive a notification by email. NOTE: There is no live session on Mon. Description: This course features two sessions, focussing on first principles when interacting with the shell, and job submission through the slurm scheduler. We will be providing online synchronous (real-time instruction) programming for Kindergarten to Grade 12. of pure Python programs is often sub-optimal, and might hinder your research. This introductory MPI course will present an overview of what is MPI; what it enables one to do; demonstrate and discuss various MPI programs starting with a simple "Hello World!" datasets, it can be a significant challenge to work around such memory constraints. Compute Canada accounts are free, but one has to be affiliated with a Canadian academic institution to qualify for one. Perhaps you have learnt you need to learn how to write some parallel code using Message Passing Interface (MPI) for your research? Compute Canada account is required to enroll.To register for any of the courses: • Follow this link: https://training.sharcnet.ca • Click the … Parallel Generation of Transversal Hypergraphs. They are built into the syntax of the language itself. Description: Python has become one of the most popular programming languages in scientific computing. Beginning with overviews of the use of LC-M/MS in protein analysis, the book continues with topics such as protocols for the analysis of post-translational modifications, with particular focus on phosphorylation and glycosylation, popular ... This day might be closer than we think.This book is about the limits of the Earth and how physical constraints are increasingly setting boundaries for the future development of our species. In this offering each topic is its own course (see below) enabling one to enrol in the topics he/she is interested in and to not have to scroll through material one is not interested in. with sequencing technologies. The SHARCNET Summer School on Advanced Research Computing is an annual educational event for graduate/undergraduate students, postdocs and researchers who are engaged in compute-intensive research.These schools are FREE and provide beginner-to-intermediate level courses on a wide range of subjects, from traditional high performance computing to data … Project included extensive electronics and programming (MATLAB) of embedded DAQ device. At the heart of digital scholarship are universal questions, lessons, and principles relating both to the mission of higher education and the shared values that make an academic library culture. Be aware that it might take a couple of business days to get your account approved. Classes will be in English. At the start of 2021, SHARCNET hosted its first Introduction to Advanced Research Computing course. With Metro’s summer school Sciences courses, you can complete a 5-credit course in four weeks! Publicaciones Efficient supercontinuum generation enabled by dispersion engineering in a dual-core waveguide Optics Communications 2020 Ver publicación. "Are there common phenomena and laws in the dynamic behavior of granular materials, traffic, and socio-economic systems?" The answers given at the international workshop "Traffic and Granular Flow '99" are presented in this volume. Python is an easy-to-read, easy-to-learn, general-purpose, and popular programming language. 142723 o 104358 de 70841 . SHARCNET summer Schoool, 2010, Sheridan College Week-long Parallel Computing Course• Lectures explained key concepts clearly.• [in response to, do you think you're leaving this course prepared to start parallizing codes?] Prerequisite knowledge: Some experience with scientific computing in any language. standard 2008, the introduction of co-arrays has made writing parallel
This is true not just for astronomy, but for all academic disciplines, including the physical sciences, engineering, health sciences, social sciences and humanities. Found insidePEERS® for Young Adults presents the first evidence-based group treatment program for young adults with Autism Spectrum Disorder, as well as other neurodevelopmental disorders and social challenges. Fortran, as the way it is spelled today, is still alive, still used by many people, after undergoing significant modifications and improvement in the past two decades that are rarely seen in any other languages. Found insideThe first group of papers published here is concerned with integrable structures of quantum lattice models related to quantum group symmetries. This course's description will be posted soon. This course discusses Compute Canada's compute cluster scheduling software (SLURM) as well as aspects of how jobs are scheduled, using interactive jobs to do (human) interactive (live) work, and how to estimate
The SHARCNET Summer School for Advanced Research Computing (ARC) is an annual educational event for gradute/undergraduate students, postdocs, and researchers who are engaged in compute-intensive research. Summer School for the Performing Arts (Westford, MA) SSPA: Solid State Power Amplifier: SSPA: Service and Support Professionals Association : SSPA: Social Security Pensions Act (UK) SSPA: Software Support Professionals Association: SSPA: S.S. Papadopoulos and Associates, Inc. (est. To unenrol yourself from a course you registered in, do the following: This is a common area for all 2021 Summer School course registrants. Metagenomics is an emerging field in bioinformatics that investigates microbes inhabiting oceans, soils, human body, etc. Abstract: The purpose of this paper is to draw a distinction between two interrelated yet fundamentally different ways of approaching problems in computer ethics, with the goal of clarifying which problems call for which approaches. Social Services Winter shelter, bring food for the homeless. to computer programmes a lot cleaner and easier. ️ attend SHARCNET summer school 2. Read our bi-weekly news from Spark: a centre for social research innovation at McMaster University. View Esther Jang’s profile on LinkedIn, the world’s largest professional community. Goodman School of Business to honour First Nations leader Margaret Kenequanash. December 28, 2019. NOTE: If enrolling after the live session dates, recordings of such have been posted. Volunteer Experience Blood Donor Blood Donor Red Cross Blood Services 2016 - 2017 1 year. In this newsletter, we highlight centre news, upcoming events, and updated resources for researchers. Note: your browser must accept cookies from 'www.sharcnet.ca' to log in. Science 14 (Science 10 Prep) Science 24 Science 10 Science 20 Science 30 Biology 20 Biology 30 Chemistry 20 Chemistry 30 Physics 20 Physics 30. This year all attendees are required to have a Compute Canada account before registering. SHARCNET Summer School on High Performance Computing Compute Ontario Issued Jun 2019. The common area contains: a link to the Summer School 2021 Slack used during courses, an email link to submit a ticket to help@sharcnet.ca concerning Summer School 2021, and, a Summer School 2021 announcements forum. Many programs claim to be C++ programs turn out, upon
Further, since the
The topics covered will include Linux shell, Python, R, Julia, C++, Fortran, some programming paradigms, data … The unified interface of intrinsic functions for all data types makes translating mathematical expressions
Prerequisite knowledge: Basic knowledge of one or more parallel programming platforms (MPI, OpenMP, and/or CUDA). Inherited from old FORTRAN standards and enhanced by the newer ones, Fortran is still the language of choice for scientific computing for its intrinsic support for real and complex floating point operations. Summer School 2022. The project is presented in two formats, a Web site with interactive essays and a book with 25 essays. However, when dealing with large
Health Student's Volunteer HCMUT Youth organization Jan 2016 - Present 5 years 7 months. 2018/05/09 - Summer School preview, Tyson Whitehead, Abstract, slides 2018/04/25 - All about job wait times in the Graham queue , James Desjardins, Abstract , slides 2018/04/11 - Improving your Python programs with NumPy and SciPy , Pawel Pomorski, Abstract , slides At the start of 2021, SHARCNET hosted its first Introduction to Advanced Research Computing course. how code executes and how it can see (or not) values in RAM from other
Learn about machine learning and what it can do for you and your organization’s analytical tools. However, the performance
The course covers some new features available on GPUs installed on Graham and Cedar. Registration is per-course, with no limits on the number of courses. The Computer Systems Specialist Passbook(R) prepares you for your test by allowing you to take practice exams in the subjects you need to study. Scroll down to the bottom of the page for that course, click the "Enrol me" button. CMake is particularly nice since it determines for a number of programming languages the dependencies between various files, e.g., header and source files, in order to properly build the software/documentation and to minimize the amount of work required to build such. programs can be written in C, C++, or Fortran so (obviously, any one of) prior C, C++, and/or
a link to the Summer School 2021 Slack used during courses, an email link to submit a ticket to help@. The Ontario Summer School on advanced research Computing is an annual educational event for graduate/undergraduate students, postdocs and researchers who are engaged in a compute intensive research. Events for winter/spring 2021. (Live sessions will vary between instruction-based and workshop/lab-based.) YALI RLC-SA Education Change Maker Program 2020 South Africa. Yes! 68670 , 37979 e 37007 em 19162 ser 17739 que 16988 um 15755 a 14776 : 13754 para 11672 -- 11278 ) 10629 ( 9904 por 8080 com 7708 informação 7245 seu 5624 se 5460 não 5184 este 5103 como 4283 ou 4134 ter 4037 estar 3973 / 3636 ; 3496 « 3402 poder 3150 » 3020 pesquisa 2940 sobre 2815 mais 2720 novo 2717 área 2548 ' 2529 tecnologia 2523 conhecimento … with exploiting and writing parallel computing programs. ⏳ Grade hw4. Sharcnet Chair in Financial Mathematics May 2003 { June 2008 ... Continuous-time SFC Modelling, 5 hours, Applied SFC Macro-modelling Summer School, Kingston University, August 05, 2016. SHARCNET Summer Seminar, London, Ontario, August 3, 2011, July 5, 2012 and June 17, 2013. Register . This course will cover what comprises modern C++ programming and will then present and discuss how to use modern C++ to write parallel code. or on multiple nodes/computers in a cluster is not the same as writing a sequential program for a
2015 Ontario HPC Summer School Registration Opened May 29, 2015 in blog , for_educators , for_researchers , for_users , frontpage , news The Ontario Summerschool on High Performance Computing provides attendees with opportunities to learn and share knowledge and experience in high performance, technical, and data-centric computing. some of the MPI communications API calls; and discuss about how to
Found insideThis proposed volume will provide in-depth coverage about a construct known as the broad autism phenotype (BAP). streams of execution, how it orders reads and writes on those streams of
a Summer School 2021 announcements forum. Access is restricted to Compute Canada authenticated users only. Everyone that is registered in a Summer School 2021 course is
Please check back regularly for any amendments that may occur, or consult the Calgary Board of Education website for their 2020-2021 approved calendar and 2021-2022 approved calendar to cross-check these dates and view details about Professional Activity Days and … LET’S CHANGE THE WORLD TOGETHER. Go to the course's main page that you are registered in by clicking the course's link. SHARCNET will be offering a training course composed of a series of introductory topics over a period of four months. The subject is reviewed in this volume by researchers who lectured at a NATO Advanced Study Institute held in Cambridge in July 1991. 1. Break refreshments are provided … Day 1 will cover Multivariable linear regression and MNIST image classification using linear and Multi-Layer Perceptron (MLP) including some techniques to avoid overfitting. The topics covered will include Linux shell, Python, R, Julia, C++, Fortran, some programming paradigms, data … October 15, 2021. reasonably good internet connection (ideally, 10 mbit/s or better). Participants need to register to attend SHARCNET Summer School. SHARCNET Summer School 2021 - Second (Partial) Offering. In this introductory course, we will consider the simplest way to program GPUs, using the OpenACC framework. 2021-2022 School Calendar. Its array handling, enhanced by index slicing, makes array processing similar or identical to its counterparts, such as MATLAB, hence superior to any other programming languages. This course is a companion to the Modern C++ course, where you will find the features missing from Fortran that are more essential to general purpose computing than number crunching. Ava Hill tells Class of 2021 to learn from the past to build the future. Unless otherwise noted below, each week has two live sessions taking place on Mondays and Thursdays starting at 2pm Eastern Time. In this introductory Python course, we demonstrate some of the basics of Python programming --enough to get started. See credential. execution, and the time it takes for data in to be transferred across
The structuring of data and computations that makes full use of the GPU will be discussed in detail. SHARCNET also offers a series of online seminars (so-called "General interest webinars"), typically delivered every second Wednesday at lunch time. single CPU core. Description: Writing code using modern C++ not only results in shorter, faster, and more robust code, it is also easier to maintain and update. This is a treatment of the fundamentals of cosmology and galaxies discussed from theoretical, experimental and observational perspectives and providing a basic reference source for both specialists and non-specialists. This is the fourth time since 2002 that McMaster has hosted the summer school, which has expanded from a single event in 2002 to three regional sessions, hosted by different universities throughout central, eastern and western Ontario. Prerequisite knowledge: Basic knowledge on Python and object oriented programming. To enrol in any of the courses listed below, do the following: This is the last offering of these courses for this summer school --so there are no waiting lists. Share Our Strength, a national nonprofit organization aimed at ending childhood hunger, runs the Cooking Matters program teaching low-income families about food through such programs as grocery store tours led by community volunteers who help demystify food labels and identify healthy and affordable foods. This is an expanded version of such taking place over two semesters ending by the summer semester in time for SHARCNET's annual summer school courses. CERN Administrative Student Program 2021 - Fully Funded. Day 1 will cover Multivariable linear regression and MNIST image classification using linear and Multi-Layer Perceptron (MLP) including some techniques to avoid overfitting. CMake is a cross-platform, open-source software tool used to automate the building, testing, packaging, and installation of software. To enrol in any of the courses listed below, do the following: If the course is full, you may choose to
Although most problems in biology are not as embarrassingly parallelizable as the physics codes that HPC systems are usually designed for, this has been starting to change in recent years. A
In this thoroughly researched and controversial book, Greer steps off the well-trodden paths of orthodoxy, asks new questions, and begins to right the wrongs done to Ann Shakespeare. This is the prototype that also characterized apartheid South Africa. Now, thanks to the policies of Pierre Elliott Trudeau, Canada has done an about-face on race and is the world's first official multicultural country. Note: The2021-2022 calendar provides for 196 possible school days between September 1, 2021 and June 30, 2022. Everyone that is registered in a Summer School 2021 course is
These schools are free and provide beginner-to-intermediate level courses on a wide range of subjects, from traditional high performance computing to data science, machine learning, popular languages such as Python and Julia as well as domain-specific courses. Click the "gear" icon at the top-right hand side of the main course screen. When someone drops from the course and
Sep 2017 - Aug 20192 years. Shells on Linux, Unix, and other POSIX operating systems are fundamental tools providing access to and control of software. December 9, 2002 . reasonably good internet connection (ideally, 10 mbit/s or better). This course
If you have a need or are using Conda, enrolling in this course will enable you to learn how you can use Conda inside of Singularity. The summer school has been given at three locations for the last seven years and is a collaborative effort of the three High-Performance Consortia in Ontario: SHARCNET, CAC, and SciNet. Live Session Dates: Feb. 14, 17, 22 & 24. Writing parallel code using modern C++ should result in straight-forward, sane-to-maintain/debug code. Singularity has evolved significantly since it was first introduced in 2015 supporting features such as overlay files, image encryption, exposing GPGPU devices to the container software, etc. Universidad de las Ciencias Informáticas, Havana, Cuba. ️ plot graph . October 15, 2021 . Naturally we start looking into the fundamental concepts of R programming, with focus on manipulation of lists, vectors, arrays and data frames. Why is wall turbulence self-sustaining? In this book well-regarded researchers not only discuss what they know and believe, but also speculate on ideas that still require numerical or experimental testing and verification. ... RAC 2022 will launch on September 23, 2021. before the first live session, know that course content might not be
Registration is per-course, with no limits on the number of courses. 2022-2023. This course provides an introduction to Dask. NOTE: This course starts on Tuesday, November 30. SHARCNET Summer Seminar, London, Ontario, July 12, 2012. Summer School provides an opportunity for students to accumulate credits in a flexible environment outside of the regular school year. This course is a part of SHARCNET’s ongoing “Introduction to Advanced Research Computing” series of online courses for 2021-2022. We will show some of the practice of interlanguage programming, through which the shortcomings of Fortran could be complemented by interfacing with C/C++. valid way to use C++, it is better to write programs to leverage
January 20, 2021. A selection of those articles are gathered here. This is the first peer-reviewed book centered on the theory and practice of critical digital pedagogy. Found insideA comprehensive manual on the efficient modeling and analysis of photonic devices through building numerical codes, this book provides graduate students and researchers with the theoretical background and MATLAB programs necessary for them ... Edmonton Catholic Schools is proud to continue to offer Faith and Choice for students in Edmonton. will (briefly) introduce the C++ language and will discuss modern C++ concurrent programming. Please note that consultation with a SHARCNET HPTC prior to submission is a programme requirement. 1. The summer school will include both in-class lectures and hands-on labs (done on the participants’ laptops). recommend for those who may also be interested in taking SHARCNET Summer School courses
file called a shell script so those commands can be run automatically by executing that script. The first ngCFHT workshop took place ... SHARCNET, SciNET, HPCVL, Calcul Quebec and ACENet). This is an expanded version of such taking place over two semesters ending by the summer semester in time for SHARCNET's annual summer school courses.. 2021SS Getting Started: The Shell and Scheduler (May 25 and 26; 10am to 5pm EDT), 2021SS Modern C++ and Parallel Programming (May 28, 31, and June 1; 10am to 5pm EDT), 2021SS Modern Fortran and Parallel Computing (June 2 to 4), 2021SS Python for HPC (June 7 to 9; 10am to 5pm EDT), 2021SS CUDA (June 10, 11, and 14; 10am to 5pm EDT), 2021SS Parallel Programming with MPI (June 15 to 17; 10am to 5pm EDT), 2021SS Deep Learning Foundation (June 18 and 21; 10am to 5pm EDT), 2021SS Bioinformatics (June 22 and 23; 10am to 5pm EDT), 2021SS Parallel debugging and profiling (June 24 and 25; 10am to 5pm EDT), 2021SS R for Statistical Computing (June 28 and 29; 10am to 5pm EDT). Attend these sessions to learn about advanced research computing using modern HPC platforms: distributed, parallel and Graphical Processing Units (GPU) computing, or visualization techniques. Enrolled early? These schools are free and provide beginner-to-intermediate level courses on a wide range of subjects, from traditional high performance computing to data science, machine learning, popular languages such as Python and Julia as well as domain-specific courses. MPI's goals are high performance, scalability, and portability. 2-Day Deep learning foundation course is recommended for who wants to actually program it. SHARCNET will be offering a training course composed of a series of introductory topics over a period of four months. This course will be focused on Python usage on Compute Canada clusters. WestGrid's visualization training materials page has embedded video recordings and slides from the following webinars: YT series: “Using YT for analysis and visualization of volumetric data” (Part 1) and "Working with data objects in YT” ( that can handle large datasets on a single multi-core machine or on a cluster. Live Session Dates: Oct. 12, 14, 18, & 21. Description: This course is in response to the inquiry from the research community: Is FORTRAN (still) supported? Greater Essex County District School Board ... Summer 2021 - Dual Credit: Summer Learning Forms See all publications. Graduate students and postdoctoral scholars from all academic institutions in Canada are invited to apply for the International Summer School on High-Performance Computing Challenges in Computational Sciences, to be held July 12 to 17, 2020 at the University of Toronto, … Everybody is welcome! Oct. 11 due to the Thanksgiving holiday. Instead, there will be a live session on Tues., Oct. 12. The format: a five-day workshop with mixed lectures and hands-on sessions on a number of selected subjects, including … We will discuss both strengths and weaknesses of this approach, when compared with full-fledged GPU programming using CUDA. This course will introduce CMake as well how to write, run, and test CMake scripts. The book may serve as a valuable reference for researchers or a supplemental text for graduate courses or seminars. The summer … Found insideWith its series of exercises, this is ideal reading for students and lecturers in physics and informatics, as well as experimental and theoretical physicists, and physicists in industry. PIRSA:18020106, PSI 2017/2018 - Beyond Standard Model - Lecture 1, 2018-02-16, PSI 2017/2018 - Beyond Standard Model (Burgess) The Power of Counting: the use of EFTs in Inflation, Cosmology Group meeting Perimeter Institute, Waterloo ON, Oct 2017. Describing a research paradigm shared by indigenous scholars in Canada and Australia, this study demonstrates how this standard can be put into practice. The creators of the award-winning website of the same name draw on science, art and blogs to reveal what people throughout the world are actually feeling, in a volume that summarizes a database compilation of several million search results ... Inherited from old FORTRAN standards and enhanced by the newer ones, Fortran is still the language of choice for scientific computing for its intrinsic support for real and complex floating point operations. Knowing what is classes and functions are. program; demonstrate how to compile and run MPI programs; discuss
The Summer Institute for Big Data will introduce participants to some of the most advanced methods, algorithms, and tools, readily available today for analyzing, mining, and visualizing large data sets. 2021-2022 List of Significant Dates. This year's summer school will run from May 25, 2021 to June 29, 2021 and will be 100% online as a single stream. Enrolment is automatic for everyone enrolled in any 2021-2022 Introduction to Advanced Research Computing (ARC) course. (sequential) correctness of its code. May 6, 2019 The registration for the summer school west is temporarily unavailable for maintenance. The SHARCNET Summer School for Advanced Research Computing ( ARC) is an annual educational event for gradute/undergraduate students, postdocs, and researchers who are engaged in compute-intensive research. busses (e.g., CPU to GPU RAM, CPU to machine RAM, etc.). Familiarity with Jupyter Notebook and basic console use. Apart from the Compute Ontario Summer School Central, which will be hosted in Toronto by SciNet from June 11 to June 15, 2018, there are two other instances of the 2018 Compute Ontario summer school: One hosted by SHARCNET at Western University (May 28-Jun 1) one hosted by CAC at Queen’s University (Jul 30-Aug 3). the features of the C++ language and the C++ Standard Library. Each course is between 1 and 3 days long and consists of materials on this web site and Zoom video conferencing sessions. This is not a course. New to Compute Canada compute resources? Notably, this latest edition incorporates new coverage on 3G mobile phone networks, Fiber to the Home, RIFD, delay-tolerant networks, and 802.11 security, in addition to expanded material on Internet routing, multicasting, conge. Description: Deep learning has been getting lots of attention from many different fields including business/finance, image handling and even science simulation. ️ attend SHARCNET summer school 2. March 2021 < Previous; Next > Article Navigation Gibbs point process model for young star clusters in M33 Dayi Li, Dayi Li Department of Statistical Sciences, University of Toronto, 100 St. George St, Toronto, ON M5S 3G3, Canada. SHARCNET Summer School (High Performance Computing) Compute Canada | Calcul Canada Expedición: jun.