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10.5446/57428 (DOI) | So, as I was saying, thank you for being patient, for waiting for us for the last two presentations. We have received some communication from our speakers. They are well entitled not to be here, unfortunately. So, thank you for your patience. We would like to introduce our new speaker, it's Karel Shavok from the Czech... | Agriculture comprises vital economic sectors producing food, agro-industrial feedstock, and energy and provides environmental services through managing soil, water, air, and biodiversity holistically. Agriculture including forestry also contributes to managing and reducing risks from natural disasters such as floods, d... |
10.5446/57421 (DOI) | y vamos a proceder entonces a contar esta experiencia. Yo estoy mirando la pantalla de stream y agente. Sí, opa, te damos un segundito. Se damos un segundito, partir. Estoy dando un partir. Acá está. Ahora permitió. Ahora sí, ¿no? Sí, ahora sí. Esto es de tuya, la presentación. Gracias. Bueno, quería agradecer por ace... | El presente trabajo es un caso de éxito en la actualización de un catastro municipal utilizando herramientas libres, realizado en el distrito de Hohenau, departamento de Itapúa, Paraguay. Fue posible migrar los registros catastrales a un Sistema de Informaciones Geográficas Institucional, mediante el cual fueron integr... |
10.5446/57257 (DOI) | Okay, the second talk today is a Canon class created of an open framework for three Canon pie monitor with Owen Smith. Thanks Owen, good morning. Hello, good morning. Okay, Owen is a student of the Institute for Environmental and Spatial Data Analysis at the University of North Georgia. It's okay. Okay, Owen, the stag... | Forested areas play an integral role in the maintenance of both local and global environments. They are the bulk of Earth’s carbon sequestration for mitigating anthropogenic processes, provide natural erosion and runoff control for flooding events which have been growing in frequency because of climate change, and can ... |
10.5446/57180 (DOI) | Okay, let's start. Let me just put my screen like this first and welcome to, good morning and welcome to the academic stage. This morning you have a great lineup of presentations for you that talk on cropped land changes, for example, that are related to violent conflict to landslide monitoring in Vietnam using Sentin... | In Central Mali, climate change, food insecurity and growing conflicts over land use necessitate being able to localize areas of food production (Benjaminsen, 2018) . The region’s heavy reliance on subsistence agriculture livelihoods means that humanitarian actors must quickly assess changes in cropland to plan the dis... |
10.5446/57181 (DOI) | Your next speaker is Thomas. Hello Thomas, who are you? Hello, I'm good thanks. Yeah, Thomas, you talk about Serbless and he is the CTO of address cloud. Where he leads research and development of geographic risks and location intelligence services. Yeah, and Thomas, your turn. Brilliant, thanks. Just going to share m... | Serverless enables geospatial developers to build applications without worrying about servers or containers. In this session we will look at the advantages and challenges of serverless for geospatial, drawing on Addresscloud's experience as an early adopter and insights gained from using serverless to power production ... |
10.5446/57182 (DOI) | Stephanie, heading over to you. Okay, well, thank you. And thank you, everyone, for joining me today to learn more about Biopal and how we are collaboratively developing open source software for ESA's biomass mission. I'd like to start today by telling you more about the biomass mission and the challenges we sometimes... | ESA's BIOMASS mission is designed to provide, for the first time from space, P-band Synthetic Aperture Radar measurements to determine the amount of above ground biomass (AGB) and carbon stored in forests. The novelty of BIOMASS’s sensors poses the challenges to develop scientific algorithms, estimating i.e. ESA’s AGB ... |
10.5446/57183 (DOI) | All right. Can you see this? Because I can't see you anymore. Is this visible? Yes, looks very good. Okay, so thank you for the introduction. I think that was from LinkedIn, so that sounded much more confident than I actually am in person. Anyway, so I would like to talk about how we introduce multilingual support for... | The pygeoapi project easily allows developers to build their own data providers. This talk describes the creation process of a bilingual OGC API Records provider and how it led to a pull request that brought multilingual support to pygeoapi. The Canadian Geospatial Platform (CGP) has recently built an open REST API, kn... |
10.5446/57184 (DOI) | Okay. Hello, everyone. My name is Jorge and I will be the host for this first session on the Puerto Madri in room. I'm going to welcome Alex, who is our first speaker. Hello, Alex is going to present the Digital Africa talk. He is a certified special professional with extensive experience in software development, deve... | In 2019 Geoscience Australia announced the creation of the ambitious Digital Earth Africa initiative, modelled on the rising success of Digital Earth Australia. The goal of the Digital Earth platforms is to make petabytes of Earth observation data freely available and accessible to inform policy, stimulate economic gro... |
10.5446/57185 (DOI) | All right, so let's get started. My name is Peter Pokorny and I'm a developer working at Tyler. I was lucky that I could start working a little bit and help to migrate or help to fork Mappox into the open source one fork. I'm going to talk a little bit about this project from more from the technical side. And the pres... | Want to learn how to build applications with vector maps for iOS or Android? Looking for more information about MapLibre? Confused about how MapLibre differs from Mapbox? We will explain all that and show how you can add MapLibre and enrich your application by high quality vector maps and custom overlays. We will prese... |
10.5446/57186 (DOI) | We were out for two or three minutes. We're waiting for the next presenter. The next presentation, next topic in the session, we have acknowledged, wanted to know what we are doing. A geospatial professional loves the intersection of spatial mapping, open source geospatial and open data to solve global changes. He wor... | Building an open-source community is already a huge effort. The covid-19 pandemic made this even harder. We started the QGIS Indonesia community - then it called QGIS ID, an Indonesian QGIS User Group while trying to overcome the pandemic. We manage to have one big meet-up before any social meeting is prohibited. As a ... |
10.5446/57187 (DOI) | Okay, Rob, we can start if you are ready for the presentation. Yeah, great. Can you hear me okay? Yeah, I can hear you okay. Perfect. Well, thank you very much. Welcome to this presentation. My name is Rob. I am a program manager with New Light Technologies. Wes Richaudet is a software architect with New Light. He is ... | Historically, enterprise-class geospatial application architectures have generally relied on computationally intensive and ponderous server-side databases, webservers, and software platforms for data processing and retrieval. Traditional architectures for simple web-based GIS applications have required the use of expen... |
10.5446/57188 (DOI) | He's a developer and data analyst and memorialist and has specialized in ROTAR remote sensing. He will be delivering the Cold War in reconnaissance imagery loaded up to rectifying the 60s in high resolution. So I will play the recorded session for you. I will be talking about Cold War reconnaissance imagery reloaded, ... | CORONA is the code name for the first optical reconnaissance satellite mission of the United States (1960-1972). The goal of the mission was to produce high-resolution analog photos of most of the Earth’s surface, especially of political hot spots and military locations. Due to the regular recordings, large areas could... |
10.5446/57189 (DOI) | Okay, we are back. Hello, Astrid, again. Okay. We can start with your presentation. I just want to present you again. Astrid is an active member of the Oshia and Charter member since 2010. She will talk about creating great applications for your need with MapBender. So, you go. Okay, so hello everybody. It's great to ... | Mapbender is Web GIS Client that helps you to create applications for the web. This presentation will show what is possible and you will see how easy it is to work with Mapbender. Mapbender improved a lot. With the new version we have a refactored design and many new or improved features. You can integrated your WMS Se... |
10.5446/57190 (DOI) | Okay. Here you are. I just want to see if when I put it in, oh yeah, so I can't really, I can't see presentation mode. Yeah, the point is you have a delay of about 20 seconds between the StreamYard and the Vennueless. So now you could see it on Vennueless as well. Vennueless, what is that? That's the other system wher... | The Urban Heritage Climate Observatory (UHCO) is a new Community Activity within GEO, working to reveal the fast-paced growth of EO technology and information to help address climate change risks and impacts on World Heritage Cities. UHCO operates upon the common ground of climate, heritage and urban related Sustainabl... |
10.5446/57191 (DOI) | Thank you. Thank you. Hello everybody. I'm really happy to be here. I'm part of the organization committee. So this is really nice to be here as a presenter. Thanks, Ken, for being session leaders and all to be here. I'm here to say a little bit about the project. I had the opportunity to be part of. It was a data jou... | How can a small and independent media press help in the fight against negationism and pandemic? In this talk I intend to share an insteresting use case from a small and independent media press on a Data Journalism project using FOSS4G to infer whether or not the forest fire occurrence is agravating respiratory syndrome... |
10.5446/57192 (DOI) | The top contributor of GeoServer and also the top contributor of GeoTools. Anyone also the SoulCuts award in 2017 in Boston, I think most people in OSGU already know Andrea very well. So I give the floor to you Andrea to tell us about GeoServer and OGC APIs. Thank you. Can you hear me? Yes, we can hear you perfectly. ... | Join this presentation for an introduction to OGC API Features, Styles, Maps and Tiles (and more!), the state of their development, their extensions, as well as how well the GeoServer implementation is tracking them. The OGC APIs are a fresh take at doing geo-spatial APIs, based on WEB API concepts and modern formats, ... |
10.5446/57193 (DOI) | Hello, everybody. The next presentation is about geo-server and you have Lissando Parma to talk about this. He is a senior DevOps engineer at GeoSolutions. He designs and implements GeoSpecial Systems based on geo-server and other great open source projects. Hello, Alessandro. Hi Diego, can you hear me? Yes. Right. Th... | In this presentation we will share with you the lessons we have learned at GeoSolutions when deploying and operating GeoServer as well as some common patterns for the migration of on premise GeoServer clusters to the cloud. We'll share with you tips on how to: - best practices to migrate your existing GeoServer cluster... |
10.5446/57194 (DOI) | We are going with the next talk. We are going with the next talk. It is about development and prospects of RIE. We are using this web app using Sysium. We are going to welcome to Haydmitty. Baba, who is going to talk about that. Haydmitty, if you are there and you can hear us, everything is yours. Can you hear me now?... | This year we released Re:Earth, our no-code web GIS tool that uses Cesium under the hood, to the OSS community. Re:Earth's aim is not to rewrite the wheel, but rather to harness the power of the 3D globe and allow absolutely anyone to visualize and share their geospatial data. Users are able to import preexisting data ... |
10.5446/57195 (DOI) | I get the knack for our interface so that we can just speak that we're going to be meeting in a moment. And that is Joseph Sitchar. And Joseph is a geographer and master in environment analysis and landscape management. He's specialized in GIS and web map development. And he's currently at the GIS Center for the Unive... | The intensification in recent decades of scientific evidence on climate change and on the degradation of natural systems has led to increasing public awareness about the environment. In recent times, this commitment to respecting the natural environment has emerged strongly among young people. Through various platforms... |
10.5446/57197 (DOI) | I am happy to invite Carlos Palma. He's working with Guadaltil, I hope I pronounced it correct, a company which collaborates with the National Center of Geographic Information of Spain. He's a developer and analyst and today he's going to share about some mobile, some enriched mobile apps for trails. So Carlos, you ha... | The use of mobile devices for outdoor activities in nature has increased significantly over time. These mobile applications are of great use for this type of activities and, in addition, they give great added value to detailed spatial information in natural environments, far from urban centres, in comparison to commerc... |
10.5446/57198 (DOI) | Okay, I think it's a good time to be presenting the next talk. So hello everyone, welcome to First 4G 2021. This is Wednesday and this is the Akonkawa Storm. Next Julia Dach will be presenting forecasting the future of weather data with GOES R and DileDB. I'm sorry if I didn't get the GOES R flight. It's okay. So, is ... | The Geostationary Operational Environment Satellite-R (GOES-R) series provides continuous satellite imagery of the Earth’s eastern hemisphere. GOES-R series datasets are made available through multiple cloud service providers via NOAA’s Big Data Program. The datasets include Level 1b and Level 2 satellite data split in... |
10.5446/57199 (DOI) | time to start back. Welcome everyone to this next talk of the academic track of Phosphor G 2021. My name is Marco Minghini from Italy. It is my pleasure to introduce the next speaker of this session, Philippe Ruffin. He holds a PhD in Geography. His research aims at mapping agricultural systems across large areas and ... | Current Earth Observation applications heavily rely on analyses of dense intra-annual or inter-annual time series. State-of-the-art analysis workflows thus require mass processing of satellite data, with data volumes easily exceeding several terabytes, even for relatively small areas of interest. Cloud processing platf... |
10.5446/57201 (DOI) | Did you have a screen to share? Yeah, I can share the screen. OK. Cool. So we'll wait for you. I'm seeing your screen. So I go to the background and give the floor to you, Krishna. OK, thank you. Yeah, so hello, everyone. This is going to be a very interesting talk on geospatial analysis with Python. So on, I guess, t... | This workshop is ideal for someone who has recently started using python and exploring the possibilities of it in the GIS industry. This is the beginning of complex spatial scripting Since almost all industries are more or less connected to Location and mapping, it is important to spread awareness and literate develope... |
10.5446/57202 (DOI) | Hello everyone. Now we are going to see another talk related to the Geo Styler Mapfail parser. So the speaker will give a quick introduction to the Geo Styler framework before going into more detail about the current state of the mapfail parser, including lessons learned and the life demo and future prospects. Our spe... | The GeoStyler mapfile parser provides automatic translation capabilities of style information from mapfile layers into other formats like SLD or QGIS style. This enables for example to transfer the styling of a MapServer project into a QGIS project. There exist a vast number of definitions and formats to encode graphic... |
10.5446/57203 (DOI) | And Gidega's already got his slides ready to go for us. Thank you very much for that. Gidega is the CEO and co-founder of Synergize, a geospatial company from Sylvania that you may all know for the Sentinel Hub and the EO browser. And several years ago, they recognized the potential to open EO data that hit a wall try... | With the unprecedented volume of EO data, the possibilities for its use are endless. The cloud infrastructure and various tools make it easy to visualise the data, analyse it, and even run some machine learning models to determine land cover or the like. What is needed, however, is the ability to run these processes on... |
10.5446/57204 (DOI) | Okay, thank you. Welcome again. This is going to be the last talk on this session in Puerto Madri. Now we have Martí, Martí Periquei from Geomático. He's a GIS developer and analyst. In 2015 he joined Geomático to work on web development and training in open source special technologies. He's going to talk about a diff... | How to build a map website in one afternoon? How to get 1 million visits in less than 24 hours? How to technically survive to an unexpectedly high traffic without spending a huge amount of money? A story about a small GIS company that developed a website that helped millions in a very difficult moment. A tale of collab... |
10.5446/57205 (DOI) | We are moving to our next presenter. I'll add Vicky. Thank you, Felix. Vicky is preparing his presentation. I think we will have a presentation directly from Mexico, right? Right. So I'm trying to share my screen. Share. Share screen. We still have two minutes, Vicky. And can you see the screen? Not yet. Share. Share ... | What are the alternatives when a road is closed? You didn't find a path, because your graph is disconnected and you didn't know? pgRouting is more than finding the Shortest Path on the database. We provide graph algorithms that can solve those questions and more! pgRouting extends the PostGIS PostgreSQL geo-spatial dat... |
10.5446/57206 (DOI) | Okay, I think we can start already. So welcome everyone to Wednesday in Fast 4G 2021. This is the Konka Watchroom. Following we will have the dollar presenting handling your tips in current site code with GDAAL and Loan. Well, I'll let you do the possible talk. Okay, thanks Jose. So hi everyone, my name is Derek Dohle... | GDAL provides extensive capabilities for processing GeoTIFFs and other spatial data formats. However, until recently, the use of GDAL in web applications was limited to server-side code. This talk will describe how we use WebAssembly and a new wrapper library we developed, called Loam, to make GDAL's suite of tools acc... |
10.5446/57208 (DOI) | Can you confirm please? Okay, now I see myself. So, well, I still have commented, I'm going to make a follow up on how to integrate the special data in business processes. First of all, I will go very, very fast to give you some background on the company work for, not for commercial, but to let you know that we are a ... | Spatial information always brings added value to workflow processes of all kinds. Traditionally, applications for managing general information do not incorporate management functionalities for the associated spatial information, which is treated independently and, thus, not synchronised. This leads to lack of coordinat... |
10.5446/57210 (DOI) | Her field of study is in remote sensing and GIS and she has waking interests in radiate radar, infirmatory, full land defamation detections and optical images for air pollution determination. So there we go. Hello. Hello Dr. Tri. Yeah. With that for the view, I give you the floor. Okay, so now I share. Can you see? No... | Geological disasters like landslides have been causing huge losses for people and property in many countries, especially the ones located in mountainous areas. These disasters are very hot issue that is being paid special attention by managers and researchers from many countries around the world. Vietnam is one of the ... |
10.5446/57217 (DOI) | Okay, so it is time to introduce our next presenter. It's a pleasure to introduce Peter Priddle. I hope I'm saying the name correctly. He is the founder and CEO of MapTiler. And tonight, or at least for me, Bucharest, tonight he's going to talk about a community project, Map Libre, Mapbox GL forks. So Peter, you have ... | The status, recent development and roadmap of the open-source community driven project for hardware accelerated rendering of maps powered by vector tiles in a web browser (GL JS) and with native code (Android, iOS, etc). Learn how to migrate with practical source code samples. After Mapbox announced the closure of Mapb... |
10.5446/57218 (DOI) | Hello everyone, I am Gérald Fanois. I created the Gérald Labs company 14 years ago in 2007. We consider ourselves as experts in open source solutions, development and support. And I am very glad to be here today online for this Phosphor G21 to present to you the MapMint Service-Oriented GIS platform. The main goal of ... | MapMint is a comprehensive task manager for publishing web mapping applications. It is a robust open-source geospatial platform allowing the user to organize, edit, process and publish spatial data to the Internet. MapMint includes a complete administration tool for MapServer and simple user interfaces to create Mapfil... |
10.5446/57219 (DOI) | So it is my great pleasure to introduce Joe and our next speaker. This is going to be the final presentation for this room today. Joe, I'm adding you to the screen now. Hello. Hello. And promptly, at your start time, I'm going to add your speaker deck. So a pleasure to see you. Thank you for speaking at FosterGVC. Ind... | Everyone knows metadata is A Good Idea and Very Important, even more so given the current focus on data sharing. Unfortunately it's also time-consuming, hard work, and a bit boring. Assuming you've even kept tags on all of your data sources, manual metadata creation also doesn't work well at scale. Out of date, inaccur... |
10.5446/57222 (DOI) | Good morning or good afternoon or good evening depending on where you are. My name is Marco Mingini. I will be the chair of the next talk of the academic track and I'm happy to introduce the next speaker. Natalia Morandera who is a doctor in biological sciences. She's a researcher at the National Scientific and Techni... | Floodplain wetlands play a key role in hydrological and biogeochemical cycles and comprise a large part of the world's biodiversity and resources. The exploitation of remote sensing data can substantially contribute to monitoring procedures at broad ecological scales. In 2020, the Lower Paraná River floodplain (also kn... |
10.5446/57225 (DOI) | Hi, I'm back. I'm going to remove this because I don't think the internet connection is going to be good enough for this. So can you see the first slide now? Yes. Now I can see it and I can hear you perfectly. I can see it changing. You can see it changing. Okay, good. Yeah. Okay. All right. Fine. We're ready when you... | Over the last 15 years, great strides have been covered in the Geospatial Open Source domain with the rise of numerous FOSS development companies using QGIS and PostGIS as foundational technologies to serve their clients and expand their scope. Nonetheless, the Geospatial Open Source community has been largely absent f... |
10.5446/57226 (DOI) | Hello and welcome. How are you? Hi. I'm well. How are you? Thanks so much for having us. I don't think you really appreciate it. Thank you for presenting. Sorry if I missed, didn't pronounce you or name correctly. No, it's perfect. Yeah. Okay, that's great. Thank you. That is good. I will share my screen really quick.... | OpenAQ is the largest, open source air quality data platform, hosting 5+ billion real-time and historical measurements from 120 countries, and serving an average of 35 million API requests per month. The data have been used for a wide variety of applications, from air quality forecasts produced by NASA scientists to pl... |
10.5446/57228 (DOI) | presentation and I will start his presentation right now. I would like to make a presentation about PG meta data, which is basically a QTS plugin to manage your meta data in your PostgreSQL database. What is the meta data? It's a data about data. It's to help people to understand your data. For example, on the right s... | PgMetadata - A QGIS plugin to store the metadata of PostgreSQL layers inside the database, and use them inside QGIS PgMetadata is made for people using QGIS as their main GIS application, and PostgreSQL as their main vector data storage. The layers metadata are stored inside your PostgreSQL database, in a dedicated sch... |
10.5446/57229 (DOI) | Okay, welcome back everyone. I am Rajat this side. I am session leader for this session. Our next presentation after two very interesting presentations by Ricardo and Gerard would be on PM tiles which is an open cloud optimized archive format for serverless map data. It would be presented in a video format and after t... | Have you ever wished for web maps with no servers or backend to maintain? Introducing a new archive format called PMTiles, based on HTTP Range requests, for serving Z/X/Y tiles from storage APIs such as S3. PMTiles is a new archive format for pyramids of tiled data. It enables developers to host tiled geodata on commod... |
10.5446/57234 (DOI) | So, yes, and we're live if all goes well. I'll look it up in the quarter past stream. Yes, we are. OK, so welcome everybody. This afternoon session, we'll be hearing six presentations, and five of them happen to be geo-Python related. And the first presentation here will be about PyGU API. And we have these two gentle... | pygeoapi is an OGC API Reference Implementation for Features. Implemented in Python, pygeoapi supports many other OGC APIs via a core agnostic API, different web frameworks (Flask, Starlette, Django) and a fully integrated OpenAPI capability. Lightweight, easy to deploy and cloud-ready, pygeoapi's architecture facilita... |
10.5446/57235 (DOI) | He is currently an STI specialist at ISRIQ. And he's been very involved also in phosphorgy projects like GeoNetwork and PyGEO API. So without further ado, I give you the room. I don't know who is starting. Maybe I can start. Let's see. I'm wondering if I'll share the screen. So maybe Paul, I'll drive and then you can ... | QGIS demo as a generic Desktop capability. Alongside the various OGC API server implementations, clients are in the process of being set up to interact with the OGC API services. In this talk we present some new capabilities of QGIS and GDAL to interact with OGC API’s. Additionally to the various OGC API server impleme... |
10.5446/57238 (DOI) | Okay, so I think it is time for our next presenter. I'm not sure that I have a Swiss watch. Marco can tell me. So it is my pleasure to bring in front of you today Marco Bernasconi. I think I'm saying Bernasconi. I'm sorry, I hope I was saying it right. So Marco together with his team at Open GIS, CH is bringing import... | QFieldCloud's unique technology allows your team to focus on what's important, making sure you efficiently get the best field data possible. Thanks to the tight integration with the leading GIS fieldwork app QField, your team will be able to start surveying and digitising data in no time. Discover what QFieldCloud has ... |
10.5446/57239 (DOI) | And we are alive. Hello everyone and welcome back to the second session of Phosphor G 2021 Buenos Aires. I am Kodrina Eiliye and I'm going to be chairing a wonderful session on a lot of things relating to We Are Alive mobile apps. Hello everyone and okay there we go. Apologies. So without any further ado I am going to... | All the new features of the digital field mapping app SMASH. All you should know about the future of the Geopaparazzi project. If you are a surveyor, that's the right talk for you. For over a decade Geopaparazzi has been one of the few digital field mapping apps of the Osgeo firmament. After that many years in use a na... |
10.5446/57241 (DOI) | Good day everyone and welcome to our morning session here in Cordoba. So we have a few interesting and exciting presentations from Evan and Angelos and Astrid and finally Ratclav on some popular projects. Our first presentation is from Evan Ruhl and he will speak to the state of GDAL and he will present the latest upd... | We will focus on recent developments and achievements in recent GDAL versions. In particular, new drivers such as FlatGeoBuf, Cloud Optimized GeoTIFF, EXR, HEIF, OGC API Tiles/Maps/Coverage, STAC Tiled Assets or the infrastructure to write vector drivers in Python. We will also present the multidimensional raster API a... |
10.5446/57242 (DOI) | I'll go to the background and I'll catch up later. So Floor is yours. Thank you. Okay. I thank Jaster. Hi to Tom and Angelo. Good afternoon to everyone. Good morning. Good morning. It's night here. It's 9pm in Italy. So I'm going to speak about the state of Gionnode, the latest release and the ongoing development. As ... | This presentation provides a summary of new features added to GeoNode in the last up to the latest releases of GeoNode together with a glimpse of what we have planned for next year and beyond, straight from the core developers. GeoNode is an open source framework designed to build geospatial content management systems ... |
10.5446/57245 (DOI) | How long can you stare making the impression you're just an image? Okay, seems like I'm here now. Where am I? Why am I not in Buenos Aires? This is such a pity. So we'll have to do it that way. So sorry. But we'll have our beers. We'll have them on our own because of, you know. But what to do? This is just what we can... | The Cloud Devoured Open Source... but then it choked on Free Software. A freestyle intro on how to help Free and Open Source Software manage to avoid getting obsoleted by shareholder value. A short note on how business functions and why Free and Open Source makes a good combo when creating sustainable software architec... |
10.5446/57246 (DOI) | Hello, anybody there? Can you hear me? So I see us on the when you less platform now with a backup. Okay, good work. Alright, so I guess... Hello, anybody there? Can you hear me? Alright, I'm ready to go when you are. So I see us on the when you less platform now with a backup. Okay, good work. Alright, so hello, anyb... | FOSS4G conferences have helped generate interest in, and adoption of free and open source geospatial tools. Whether it is the business-to-business conference events, or the support of commercial organizations sponsoring FOSS4G conferences, it is clear that commercial interests and open source communities intersect in a... |
10.5446/57247 (DOI) | Hello. I guess we can start. Welcome to Fosforge. Welcome to the event. It's great to see you. It's great to see so many people that are joining us online. Welcome to today's session. When is I this Wednesday morning session? I'm John Unen from Istanbul, Turkey, and I'm going to be the chair of today's early session. ... | A common question seen on many open source mailing lists is "When will you guys fix my bug?" It is critical to my company This is often followed by one of the developers replying to say "When you write a fix or pay someone to do it". This leads to the user complaining to everyone that this snarkiness is not a welcoming... |
10.5446/57250 (DOI) | Can you turn your cam on or don't you have any? I'm sorry I didn't have a camera that was available. Okay, no problem. Alright, so then let's get started with this. Alright, hello everyone. Welcome to Swartz 4G. This is Wednesday afternoon. Following this round, we will be having your graph presenting transportation e... | Parametric CAD has made inroads in transportation engineering in recent years. FreeCAD provides an excellent framework for the development of a free / open source CAD package for 3D parametric cad modelling of highways and related infrastructure. A broad view of the development of the FreeCAD Trails workbench for horiz... |
10.5446/57251 (DOI) | Well, we are continuing. The next one is the presentation of PeerMean. PeerMean is a geospatial software developer since more than five, fifteen years. He has contributed to JDAL, FUJSTORX and several other projects. PeerMean is a computer-absorbed support, a Swiss company providing JD services and solutions. So we we... | When it comes to 3D graphics, computer games have been the technical leaders for decades. The game engines behind it have only recently been discovered by GIS manufacturers. This talk introduces game engines in general and the leading open source game engine Godot in detail. It also shows the status of integrating GIS ... |
10.5446/57253 (DOI) | Right on time, so you have four minutes or so to prepare your setup. Yes. To go live. We have some delay, about 15 to 20 seconds between the stage and the broadcast. Yeah, I saw that, yeah. When I turned on the public broadcast. Suddenly two Regineers talking. I put your presentation here. I don't know if you have sma... | In this talk I will explain how you can set up PostGIS as a service with the container orchestration framework Kubernetes. At Zalando we are managing thousand of PostgreSQL clusters and had to find a way to make the database experience for developers as easy as possible. Today they can create new clusters or run major ... |
10.5446/57254 (DOI) | Again, sorry, there are some technical issues. We're actually now in the wrong room. I sent you the new link here. Yes, we have to use the afternoon session room. So that was a bit, we have to switch over. Now it's in the private chat. Yes. Okay. Can you hear me okay? Yes. Good. So, sorry for all the technical inconve... | Zaru is a new system for creating real-time spatial dashboards. Zaru uses video-gaming techniques and a novel method of encoding data in images to enable real-time compositing and visualization of potentially giant data sets. This solution was initially developed by design firm Sasaki as a better way to understand the ... |
10.5446/57255 (DOI) | Hello, Charlotte. Good morning. Hello, good morning. So we first talk today is a tool for matching learning based a day-symmetric map approach in grass GIS and Charlotte Fraser. I think this is a good Fraser. Charlotte is a research at the University Libre, the Ruchelle's version, with a background in geography like m... | Socio-economic and demographic data is usually collected at the individual or household level, and numbers are then aggregated and released at the level of administrative units. The spatial extent of many phenomena, however, do not correspond to any existing administrative limits, making them difficult to exploit. Addi... |
10.5446/50113 (DOI) | Okay, cool. So Victor, he's here. Maybe he joined us or we need to see what the meeting is. I don't do zoom, that's for sure. Okay, cool. Victor is here with us. So I guess we can start. Hi everybody, welcome to the Volto add-ons training, the second edition. I'm Kibayu and I'm a developer with all the web Romania. I'... | Objective: With constant growth of open science and access to information, access to grey literature also increases. Little is known about grey literature and its use in Slovenia. The purpose of the study is to investigate the use and prevalence of grey literature in Slovenian university libraries. Methods: A survey wi... |
10.5446/50074 (DOI) | So let's say we start. Hello everyone, I'm Peter, I'm in Zurich. Welcome to the Plon6 classic UI theming. We will be doing three slots each of them about one hour, there's a short break in between and I hope you could prepare yourself or your computer and that it works. If you have any questions write in the Slack cha... | The core technologies involved in Plone 6 Classic UI theming and how to write your own add-on theme package. You’ll learn how to create a theme based on Barceloneta (for minor customizations and overrides) or from scratch based Bootstrap 5 without any dependencies to Barceloneta. |
10.5446/55883 (DOI) | I hope you can hear me well. I think audio should be fine with the microphone. There's one here. So we're super excited that so many of you decided to join this training. A big welcome from me and Katja, my co-host. Please, Katja, say something. Hi, all together. Nice to meet you here. Katja is in Sorrento, sunny Sorr... | What you will learn: The core technologies involved in Plone 6 programming and how to write your own add-on package and customize your Plone site by writing Python code and React components. Prerequisites: Basic Python and Javascript Knowledge. 0:00 Introduction 9:25 The Case Study 13:18 What is Plone? 22:12 Installing... |
10.5446/55895 (DOI) | All right, hi everyone. It's time for the final talk slot for today. For this one we have Victor Fernandez de Alba joining us from Sorrento. Victor is the CTO at KIT Concept and has been around the Plone community since 2006. Victor and I have served together on the board for the last few years. He has done a lot of w... | The web development workflow often includes the look and feel for the website, intranet or app you are building. The way that designers and developers communicate over the years have changed over time and so the tools used. From PDF mockups to Figma, through Sketch and Zeplin. Nowadays, the most complete way to communi... |
10.5446/55955 (DOI) | Let me quickly talk about myself and America. I'm working with Plone since 2004. Many, many incarnations nowadays I work for a key concept. I've been deploying Plone with Docker since 2015 with different approaches. At some point in 2018 I started deploying Plone with Docker and Plone. The Docker image being based on ... | Topics: * Create a new project for Volto and Plone * Developing and testing locally * Using a CI to create images for deploy * Web server configuration |
10.5446/55965 (DOI) | Okay, welcome back to the conference, the Plone Conference 2021. And it is our fourth day of talks. And with me now is Will Gwynne, who is the manager of web communications at the Purdue College of Engineering, a slightly well known university institution in the US. And Annette Lewis, who is my colleague at Six Feet U... | Migrating a site is always a challenging task, but when you have dozens of subsites with specific brand standards and custom user functionality, the challenge becomes mammoth. Six Feet Up worked hand-in-hand with Purdue’s College of Engineering to migrate their existing Zope site and its subsites into a new Plone insta... |
10.5446/57249 (DOI) | Yeah. One, two, three. Yeah. Okay. Perfect. Yes. Go ahead. We can hear, we can hear you and see you. Okay. Would you like to share those again? It's just. Use the presentation right now. Yes, we're ready for you to start to give the presentation. If you'd like to share that with us again. Get that back up on stage for... | Towards the establishment of a new opensource geospatial remote sensing VRE for e-Biodiversity Ecosystem Services and Climate Change modelling and adaptation LifeWatch ERIC e-Science panEuropean Infrastructure for Biodiversity and Ecosystem Research "lifewatch" is mainly aimed to facilitate the access to their distribu... |
10.5446/50078 (DOI) | I decided to give my topic in four lectures. So we'll have three breaks. Each lecture is about 35 to 40 minutes long. And I can also remove some subjects if I notice that we all get too tired and want to go to the Galang Beach. So this is about time parallel time integration methods. And the first part is shooting typ... | The continuing transition toward open science is fundamentally changing both the ways in which scientists communicate research findings and what they communicate. Open science places emphasis on enhanced access not only to published research findings but also to pre-published literature (preprints), underlying research... |
10.5446/57383 (DOI) | Over the years I've been giving a few talks and each time I thank the organizer. But this time I really mean I want to thank the organizer. A few years ago, maybe over 40, in 69, I passed what some of you may still know, aggregation, and with all the people from 68. And in July I had two options. I mean three options ... | We introduce a new strategy for the solution of Mean Field Games in the presence of major and minor players. This approach is based on a formulation of the fixed point step in spaces of controls. We use it to highlight the differences between open and closed loop problems. We illustrate the implementation of this appro... |
10.5446/57384 (DOI) | Thanks, first of all, for having me in Lumini. I think it's my third or fourth time, and it has always been a pleasure to be here, especially this time, is there a feedback between different microphones? I just had the impression. Okay, yeah, I thought I was supposed to say some very basic things about BSEs, about bac... | Backward stochastic differential equations have been a very successful and active tool for stochastic finance and insurance for some decades. More generally they serve as a central method in applications of control theory in many areas. We introduce BSDE by looking at a simple utility optimization problem in financial ... |
10.5446/57387 (DOI) | Thank you very much. I should start with thanks and apologies. So thanks for the organizers, studio organizers for inviting me to the great place. When I got the invitation from Jean Francois and Francois, they forgot to mention how nice this place was. If they told me, perhaps I would have come for a longer period. U... | The talk will have two parts: In the first part, I will go over some of the basic feature of cubature methods for approximating solutions of classical SDEs and how they can be adapted to solve Backward SDEs. In the second part, I will introduce some recent results on the use of cubature method for approximating solutio... |
10.5446/57388 (DOI) | Thanks to the organizers for the invitation. It's my pleasure to be here and to have the opportunity to give this presentation. So I'm actually more an expert of kinetic theory and recently came into game theory because of Mean Field Games and there seems to be a fantastic playground there. And that's a joint work wit... | We propose a mean field kinetic model for systems of rational agents interacting in a game theoretical framework. This model is inspired from non-cooperative anonymous games with a continuum of players and Mean-Field Games. The large time behavior of the system is given by a macroscopic closure with a Nash equilibrium ... |
10.5446/57389 (DOI) | Alright, thank you very much. Thank you for your patience and it's great to be here today. So my background is formally in reinforcement learning. So I think one of my jobs today is to sort of get you excited about some of the things I care about and tell you some of the challenges in that field. So let me start with ... | In this talk I will present some recent developments in model-free reinforcement learning applied to large state spaces, with an emphasis on deep learning and its role in estimating action-value functions. The talk will cover a variety of model-free algorithms, including variations on Q-Learning, and some of the main t... |
10.5446/57390 (DOI) | Merci Etienne pour l'introduction. Je voudrais aussi remercier les organisateurs pour donner la possibilité de donner un talk. Je n'ai déjà donné plusieurs talks dans ce tour, mais je suis très content d'avoir des discussions avec les organisateurs. Et je vous remercie de vous donner une lecture. Je vous remercie de v... | We first introduce the Metropolis-Hastings algorithm. We then consider the Random Walk Metropolis algorithm on Rn with Gaussian proposals, and when the target probability measure is the n-fold product of a one dimensional law. It is well-known that, in the limit n tends to infinity, starting at equilibrium and for an a... |
10.5446/57395 (DOI) | Thank you very much for coming with me today. And I'll give two lectures. The first one will be related mainly to multilayer Monte Carlo and the second one we will touch upon multi in the expressions of the things that I'm going to say today, but not in an adaptive fashion as we will see. So first go then to discuss a... | We will first recall, for a general audience, the use of Monte Carlo and Multi-level Monte Carlo methods in the context of Uncertainty Quantification. Then we will discuss the recently developed Adaptive Multilevel Monte Carlo (MLMC) Methods for (i) It Stochastic Differential Equations, (ii) Stochastic Reaction Network... |
10.5446/57398 (DOI) | Thank you. I think it's perfect time for an app, so I'm very grateful to see you here. I'd like to thank the organizer for the invitation. I think it's a very great event and I was very pleased to be here this week. So my talk will discuss how to perform some global sensitivity analysis in a stochastic system and perh... | Stochastic models are used in many scientific fields, including mechanics, physics, life sciences, queues and social-network studies, chemistry. Stochastic modeling is necessary when deterministic ones cannot capture features of the dynamics, for instance, to represent effects of unresolved small-scale fluctuations, or... |
10.5446/57399 (DOI) | Thank you very much for the introduction and thank you everyone for resisting until the very last. So the last talk will be kind of a very relaxed laid back walkthrough, only a bit of a different perspective in terms of statistics and application of statistics to the topic of uncertainty quantification and one particu... | Uncertainty quantification (UQ) in the context of engineering applications aims aims at quantifying the effects of uncertainty in the input parameters of complex models on their output responses. Due to the increased availability of computational power and advanced modelling techniques, current simulation tools can pro... |
10.5446/57403 (DOI) | Okay, well, thank you very much for being here this early in the morning and it's a pleasure to be here again. So what I'm going to talk about is project evaluation under certainty. This is a subject that has been around for a while, mostly within the business community, but for the last few years actually there has b... | Industrial strategic decisions have evolved tremendously in the last decades towards a higher degree of quantitative analysis. Such decisions require taking into account a large number of uncertain variables and volatile scenarios, much like financial market investments. Furthermore, they can be evaluated by comparing ... |
10.5446/57406 (DOI) | Thanks, so I'd like to thank Andrea, Href, Cyril and Jean-François for the invitation and for accepting to move my talk on schedule because I was supposed to speak tomorrow, which is also the reason I apologize with you because you will have a second long talk today. So the talk of today, so my talk, sorry, will be so... | The valuation of American options (a widespread type of financial contract) requires the numerical solution of an optimal stopping problem. Numerical methods for such problems have been widely investigated. Monte-Carlo methods are based on the implementation of dynamic programming principles coupled with regression tec... |
10.5446/57407 (DOI) | Thank you. So thank you for the introduction and I would like to thank the organizers of this seminar for giving me the opportunity to give a talk today. And of course the organizers of the seminar for giving us the opportunity to work on these very nice projects. So indeed I'm going to talk about some mean field cont... | The theory of mean field type control (or control of MacKean-Vlasov) aims at describing the behaviour of a large number of agents using a common feedback control and interacting through some mean field term. The solution to this type of control problem can be seen as a collaborative optimum. We will present the system ... |
10.5446/57408 (DOI) | Thank you very much for the invitation to give this talk. So this is a joint work with Elisabeth Carlini from the University of La Sabienza. So the aim of this talk is to describe some numerical methods in order to discretize the well-known Fokker Planck-Kolmogorov equation. And in a rather general nonlinear case. And... | In this work, we consider the discretization of some nonlinear Fokker-Planck-Kolmogorov equations. The scheme we propose preserves the non-negativity of the solution, conserves the mass and, as the discretization parameters tend to zero, has limit measure-valued trajectories which are shown to solve the equation. This ... |
10.5446/57409 (DOI) | Thank you very much for the organization and for the introduction. I'm going to talk about landscape of results on stochastic variational inequalities that appear in random mechanics. The plan of my talk is the following. I will start first with a fundamental problem of lestoplasticity, which is one-dimensional with n... | The mathematical framework of variational inequalities is a powerful tool to model problems arising in mechanics such as elasto-plasticity where the physical laws change when some state variables reach a certain threshold [1]. Somehow, it is not surprising that the models used in the literature for the hysteresis effec... |
10.5446/57369 (DOI) | So first I would like to thank the organizer for the organization of this beginning SamRacks and for all of this. So I went to SamRacks for the first time nearly 20 years ago and I was there and I think I prefer to be in the audience than there today. So I will try to give you some, so I will speak of some fleet struc... | Many physical phenomena deal with a fluid interacting with a moving rigid or deformable structure. These kinds of problems have a lot of important applications, for instance, in aeroelasticity, biomechanics, hydroelasticity, sedimentation, etc. From the analytical point of view as well as from the numerical point of vi... |
10.5446/57370 (DOI) | So, next I will try to present to you one simple steady state case where the difficulties lies mostly in the dependency of the free domain with respect to the displacement of the structure. I will consider an elastic structure and I will not neglect longitudinal displacement. So we will have two displacements, longitu... | Many physical phenomena deal with a fluid interacting with a moving rigid or deformable structure. These kinds of problems have a lot of important applications, for instance, in aeroelasticity, biomechanics, hydroelasticity, sedimentation, etc. From the analytical point of view as well as from the numerical point of vi... |
10.5446/57371 (DOI) | First, since last time it was, I think, really quick at the end, I will just do some summary of what we did and so try to give you the main point. So I have presented you this system, so this is a coupled fluid structure system which is nonlinear. And we have identified one difficulties linked to the geometrical nonli... | Many physical phenomena deal with a fluid interacting with a moving rigid or deformable structure. These kinds of problems have a lot of important applications, for instance, in aeroelasticity, biomechanics, hydroelasticity, sedimentation, etc. From the analytical point of view as well as from the numerical point of vi... |
10.5446/57375 (DOI) | Thank you Emmanuel. I would like to thank the organizers for giving me the opportunity to give this lecture. And I would like to thank SMF and SMAE to let us organize this SEMRAX which is a very nice feature of the mathematical community I guess in France. So I will talk about wind energy in my first talk and I will g... | In this talk, I will introduce the stochastic downscaling method (SDM) that borrows techniques from small scale turbulence (S.B. Pope) for the simulation of wind flows thanks to hybrid methods (deterministic-stochastic). I will present the downscaling method used to refine a wind forecast at a sufficiently small scale,... |
10.5446/57355 (DOI) | Donc, ma talk, on va commencer par une introduction, dans laquelle je vais vous montrer une question qu'on a en réservoir simulation. Je vous présente également les spécifiques de l'inert système que nous avons en réservoir. Ensuite, je vous présente quelques résultats du travail sur l'algebraique multigrid, qui est a... | In this presentation, we will first present the main goals and principles of reservoir simulation. Then we will focus on linear systems that arise in such simulation. The main HPC challenge is to solve those systems efficiently on massively parallel computers. The specificity of those systems is that their convergence ... |
10.5446/57361 (DOI) | So the first title is the more methodological of the two and the second is for those more interested in applications and I'll discuss both in the course of the presentation. I'd like to acknowledge my industry partner Axelos, in particular my co-authors in this talk are Fung Ho and Loin Goen in the Vietnam office and ... | Parametrized PDE (Partial Differential Equation) Apps are PDE solvers which satisfy stringent per-query performance requirements: less-than or approximate 5-second problem specification time; less-than or approximate 5-second problem solution time, field and outputs; less-than or approximate 5% solution error, specifie... |
10.5446/57364 (DOI) | Thank you for the introduction. I will speak about modeling and data assimilation in cardiac electrophysiology. It's a common work with many people, and in particular with Philippe. Cardiac electrophysiology is a study of the electrical wave with crochets over the heart, and which triggers the muscle contraction. As y... | In this talk we overview some of the challenges of cardiac modeling and simulation of the electrical depolarization of the heart. In particular, we will present a strategy allowing to avoid the 3D simulation of the thin atria depolarization but only solve an asymptotic consistent model on the mid-surface. In a second p... |
10.5446/57365 (DOI) | The work I will present is the result of several years of work, including a former PhD student Marine Torx, Sarvesh Dubey, who is now in the US, Yanmer Dessoif from LSE, another lab from the Institut Pierre Simon la Place Federation, and Eva Gellos who will be here in two weeks. And I will talk about climate modeling ... | Climate models simulate atmospheric flows interacting with many physical processes. Because they address long time scales, from centuries to millennia, they need to be efficient, but not at the expense of certain desirable properties, especially conservation of total mass and energy. Most of my talk will explain the de... |
10.5446/57366 (DOI) | So, on Monday I assume that you heard about cardiac modeling already indeed, but essentially regarding the electrophysiology of the heart, that is the electrochemical phenomena. Today I will talk about biomechanical modeling, both direct and inverse, and you will see this will cover quite a wide area of subjects that ... | The heart undergoes some highly complex multi-scale multi-physics phenomena that must be accounted for in order to adequately model the biomechanical behavior of the complete organ. In this respect, a major focus of our work has been on formulating modeling ingredients that satisfy the most crucial thermomechanical req... |
10.5446/57367 (DOI) | Thank you very much, Karine, for the introduction especially, but we feel it for all the work you have done to organize this 2016 session of SEMRAC. So I'm very happy to be here. And I think it's a real luck that we have to be able to use these facilities here. So what I would like to talk today about is something we ... | When solving wave scattering problems with the Boundary Element Method (BEM), one usually faces the problem of storing a dense matrix of huge size which size is proportional to the (square of) the number N of unknowns on the boundary of the scattering object. Several methods, among which the Fast Multipole Method (FMM)... |
10.5446/57308 (DOI) | So, thank you very much for the introduction. Tom and I guess with that just for time I'll dive into things so this presentation we talk about mapping so organic carbon and so profiles using imaging spectroscopy so this is this work that I completed as part of my PhD and published in geoderma which I'll present the ci... | Imaging spectroscopy has the potential to enable measurement of soil properties in intact soil profiles at spatial scales previously not possible. There are unique challenges associated with imaging spectroscopy compared to point spectroscopy. Particularly, signal noise and the influence of non-compositional effects on... |
10.5446/57338 (DOI) | So it's a great pleasure to be here and well it's really nice to see you know like all here in person. Well, and thanks for the online people who join us virtually all over the world. So what I want to talk about today, I want to talk about decomposition results in rational dynamics. And not only that, I want to talk ... | There are various classical and more recent decomposition results in mapping class group theory, geometric group theory, and complex dynamics (which include celebrated results by Bill Thurston). We will discuss several natural decompositions that arise in the study of rational maps, such as Pilgrim's canonical decompos... |
10.5446/57340 (DOI) | So, while I was preparing this talk, I realized that the title that I submitted, Characterizing Thirst and Maps by Lifting Trees, was actually not quite as accurate as the title, A Combinatorial Thirst and Theory, and I thought that that also fit better within the mini course on Thirst and Theory, but maybe to be mode... | Thurston proved that a post-critically finite branched cover of the plane is either equivalent to a polynomial (that is: conjugate via a mapping class) or it has a topological obstruction. We use topological techniques — adapting tools used tostudy mapping class groups — to produce an algorithm that determines when a b... |
10.5446/57341 (DOI) | Yeah, so my name is Sergei Shenekov. I finished my PhD here at X-Message University and what I will talk about today, the transcendental Thurston theory is a part of my PhD thesis and still work in progress. The history of Thurston theory starts in the 80s when William Thurston answered the question which topological ... | Thurston's topological characterization theory asks whether there is a holomorphic dynamical system that realizes topological (even combinatorial) data, this often allows to describe all possible dynamical systems in a certain parameter space. I work on extending Thurston topological characterization theory to differen... |
10.5446/57316 (DOI) | Okay, thank you very much. So perhaps an apology to begin with. I'm not, I don't really feel like I'm an expert in transgenital dynamics. I don't know a great deal of what's going on. I have thought about a few particular problems. And so I think I have to restrict myself to the small parts of transgenital dynamics th... | I will introduce the Speiser and Eremenko-Lyubich classes of transcendental entire functions and give a brief review of quasiconformal maps and the measurable Riemann mapping theorem. I will then discuss tracts and models for the Eremenko-Lyubich class and state the theorem that all topological tracts can occur in this... |
10.5446/57318 (DOI) | So indeed, I would like to repeat Dierick's comment about what a pleasure it is to see so many of my friends together again for the first time in a long, long time. I'm going to give a lecture which, well, of course, this room is filled with experts. And as a result, one hesitates to speak about things that they know ... | W. Thurston's theorems almost all aim to give a purely topological problem an appropriate geometry, or to identify an appropriate obstruction.. We will illustrate this in two examples: --The Thurston pullback map to make a rational map from a post-critically finite branched cover of the sphere, and --The skinning lemma... |
10.5446/57319 (DOI) | Thank you very much for the opportunity to speak here. It's wonderful to meet so many friends. So in this talk, I will talk about the recent work with Nasi Rampi and James Waterman in which we construct transcendental entire function which has some wandering domains that form these lakes of Guadalcan. So for the peopl... | We construct a transcendental entire function for which infinitely many Fatou components share the same boundary. This solves the long-standing open problem whether Lakes of Wada continua can arise in complex dynamics, and answers the analogue of a question of Fatou from 1920 concerning Fatou components of rational fun... |
10.5446/57321 (DOI) | So, thank you very much for inviting me. I'm thrilled to be on a conference for the first time since almost two years, since actually end of March of 2020. So, I'll talk today about, basically it's a project more than, I'll formulate several theorems, but it's more like project, an attempt to study alphor's regular co... | One can associate with every finitely generated contracting self-similar group (for example, with the iterated monodromy group of a sub-hyperbolic rational function) and every positive p the associated \ell_{p}-contraction coefficient. The critical exponent of the group is the infimum of the set of values of p for whic... |
10.5446/57322 (DOI) | Thank you very much, Anna. And thanks to the organizers for giving me the opportunity to speak here today. Works? Excellent. Okay. So yes, so I'll talk about docile transcendental entire functions, just to make sure the audio is okay. Anyway, so yes, so this is joint work with Lasse-Remba. So as a brief outline, to be... | Several important problems in complex dynamics are centered around the local connectivity of Julia sets of polynomials and of the Mandelbrot set. Importantly, when the Julia set of a polynomial is locally connected, the topological dynamics ofthe map can be completely described as a quotient of a power map on the circl... |
10.5446/57323 (DOI) | What I wanted to tell you about is really iterated monodromy groups, which is a topic that we already had in Volodia's talk yesterday. And I wanted to focus very much on the particular situation of quadratic polynomials with one positive sign that many things become much simpler when you concentrate on this special ca... | Quadratic polynomials have been investigated since the beginnings of complex dynamics, and are often approached through combinatorial theories such as laminations or Hubbard trees. I will explain how both of these approaches fit in a more algebraic framework: that of iterated monodromy groups. The invariant associated ... |
10.5446/57326 (DOI) | All right, so today I want to talk about iterated monodramming groups and transcendental dynamics, which was the title also of my thesis. So what I will be focusing on today is basically how do points in a backward orbit of a point move. We have F, an entire function, and we have some base point T. We can look at its ... | Iterated monodromy groups are self-similar groups associated to partial selfcoverings. In my talk I will give an overview of iterated monodromy groups of post-singularly finite entire transcendental functions. These groups act self-similarly on a regular rooted tree, but in contrast to IMGs of rational functions, every... |
10.5446/57327 (DOI) | I'd like to thank organizers, especially for their patience, because I was not responsive, but still giving me this opportunity to talk. And I also have to apologize for the audience who are experts, because what I talk, most of the thing is like prehistory in renormalization. But since this is the first talk, I wasn'... | We discuss the idea of renormalization for complex dynamical systems. There various types of renormalizations defined via a first return map, appear in complex dynamics, for unimodal maps, homeomorphisms of circle, and germs of irrationally indifferent fixed points of holomorphic maps. The target of renormalization is ... |
10.5446/57329 (DOI) | So we consider the space of all quadratic like maps up to a fine conjugacy. This is a nice analytic space. The renormalization operator would be iteration and restriction. Both are very analytic operations. So the renormalization operator would itself be analytic and it will be contracting. So if we have two maps that... | A fundamental fact about Riemann surfaces is that they degenerate in a specific pattern — along thin annuli or wide rectangles. As it was demonstrated by W. Thurston in his realization theorem, we can often understand the dynamical system by establishing a priori bounds (a non-escaping property) in the near-degenerate ... |
10.5446/57331 (DOI) | Thank you very much. It's a pleasure to be back here in Siam at Lumini live for the first time for a long time. Lots of interesting talks. Looking at my slides I realized that somehow I will be sitting a little bit between two chairs because I will not do all of the introductory stuff like I'm going to assume existenc... | In a recently completed paper Pascale Roesch and I have given a complete proof that the connectedness locus M_{1} in the space moduli space of quadratic rational maps with a parabolic fixed point of multiplier 1 is homeomorphic to the Mandelbrot set. In this talk I will outline and discus the proof, which in an essenti... |
10.5446/57333 (DOI) | So, yeah, as Dirk mentioned, my title is the VisualSphere for an expanding Thirst Map. And to start my talk, I first have to make some basic definitions here. I mean, what is a Thirst Map? Well, I think for this audience, I don't have to say much about it. I will define what an expanding Thirst Map is. You know, then ... | Every expanding Thurston map gives rise to a fractal geometry on its underlying 2-sphere. Many dynamical properties of the map are encoded in this fractal, called the 'visual sphere' of the map. An interesting question is how to determine the (Ahlfors regular) conformal dimension of the visual sphere if the map is obst... |
10.5446/13815 (DOI) | Good morning everybody. We are going to be looking at working with Plone and getting started with your Plone site. So my name is David Bain and I have been using Plone for many years. Today we're going to be looking at the new version of Plone which has a new user interface. And I'm going to bring up my slides so that... | Trainer: David Bain In case you are unsure about any of these terms we will do a quick review BEFORE going on to the rest of this workshop. A little background, Principles & concepts, Logging in & out, preferences and password management, Folder management and the basic publication workflow. We will not look at theming... |
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