Nanotechnology

Join our next meetup on June 25th! We will have 3 talks and will share some food and drinks while networking **Location:** Infrabel, Rue des Deux Gares 82, 1070 Anderlecht, Belgium **Agenda:** 17:45 : Doors open 18:00 - 18:40 : Drinks and pizza 18:40 - 18:45 : Welcome 18:45 - 19:00 : Elastic @ Infrabel 19:00 - 19:15 : Real life never-seen-before railway project 19:15 - 19:55 : From unknown and raw to real value 19:55 - 20.20 : What’s new in Elastic v9 20:15 : Wrap up **Talks:** **Elastic @ Infrabel** In this presentation, we will explain how Infrabel uses Elastic today and how it supports our current needs. We will briefly outline some future optimizations and the integration of OpenTelemetry to further strengthen and extend our Elastic platform. To showcase how we use Elastic for addressing real business use case, we will demo a never-seen-before application build in collaboration with Elastic Belgium. *Safia Souabi – Big Data Engineer at Infrabel* *Olivier-Désiré Muhimpundu – Big Data Engineer at Infrabel* **Real life never-seen-before railway project** *How Elastic helps ensure the punctuality of rail services by detecting and correlating events in real time to anticipate disruptions, ensure operational continuity and optimise the flow of rail traffic."* *Vanessa Coeurnelle – Cyber Resilience Data Analyst at Infrabel* **From unknown and raw to real value** In this talk, Chris shares how he transformed a legacy log ingestion pipeline into a structured, scalable, and insight-ready ELK-based system. Starting from loosely indexed XML/SOAP logs with minimal configuration, the project required rebuilding the data model to handle multiple message types, complex nested structures, and inconsistent field representations. Without the luxury of a full upfront redesign, Chris adopted an iterative, data-driven approach: combining exploratory analysis with dynamic mapping strategies to progressively shape the data into a usable format. He will discuss how this led to the design of flexible ingestion pipelines, including XML parsing, normalization, and generic handling of heterogeneous payloads. The talk also covers practical techniques for managing sensitive data, reducing storage overhead, and improving query performance—such as selective data retention, hashing and fingerprinting strategies, and the use of data streams. Finally, Chris will touch on how structuring the data effectively enables higher-level capabilities like anomaly detection and automated alerting. This session is aimed at practitioners dealing with messy, real-world data and looking for pragmatic ways to make Elasticsearch pipelines more robust, maintainable, and valuable. **Bios** **Christoph Evers** is a Senior Data Scientist and Data Engineer based in Brussels, with over 15 years of experience in data systems, search technologies, and analytics. He has been working with Elasticsearch since its early days, contributing to the project between 2010 and 2012 and applying it extensively as a search engine, document store, and log ingestion platform. At OpenLex, he designs and builds advanced data solutions for legal research, including full-text search engines, NLP pipelines for entity detection and anonymization, and large-scale analytics systems. His work also includes operating and optimizing ELK-based observability stacks in Linux and Docker environments. Previously, Chris held roles spanning software engineering, data science, and R&D leadership across sectors such as social media analytics, mobility and market research. His experience combines hands-on engineering with business-oriented data applications, delivering scalable systems and actionable insights for both startups and multinational clients. He mainly focuses on search relevance, data observability, and the practical use of ELK in production environments. **Olivier-Désiré Muhimpundu** is a Data Engineer at Infrabel, where he has been working for more than three years on large-scale data platforms and data projects. He holds an engineering degree from University of Mons Faculty of Engineering and a Master's degree in Artificial Intelligence. In his current role, Olivier focuses on designing, operating, and evolving enterprise data platforms based on technologies such as Apache Kafka, Elastic Stack, and Cloudera. His work spans data ingestion, real-time processing, monitoring, observability, and platform engineering in a large-scale railway environment. **Safia Souabi** is a Data Engineer with 6 years of experience at Infrabel in Brussels. With a BSc and MSc in Physics from London, she combines a strong analytical background with expertise in building and operating large-scale data platforms for mission-critical operational and asset data. Experienced with Apache Kafka, Elastic Stack, and the Cloudera ecosystem (Hadoop, Spark, Hive/Impala), she delivers scalable batch/real-time data pipelines and optimized ETL/ELT workflows. She works closely with stakeholders to translate requirements into reliable data products, with a strong focus on data quality, governance, security, performance, and platform resilience.

Making the new Friends after work or in your vacation.

Welcome to the #1 edition of the **AI-Native Meetup** 👋 **📅 Meetup Agenda** * 17:30: Doors Open, welcome & drinks * 18:15: Opening Remarks * 18:20: Talks * 19:30: Closing Remarks * 19:35: Networking Drinks & Bites **🚗 Getting there** Accenture office located in Tour & Taxis - Gare Maritime * **Parking**: Rue Picard 13, 1000 Brussels - 900 spaces (**±5 min walk**) * **Bike**: Bike racks available 86C Avenue du Port - 1–11 Rue Picard * **Bus**: Lines
14, 15, 57, 88, 89 Tour & Taxis stop (**In front of the site**) * **Tram**: Lines 51, 93 Sainctelette stop (**±5 min walk**) * **Metro/Subway**: Lines 2, 6 Stops Yser & Ribaucourt (**±10 min walk**) **ℹ️ Practical Information:** \- The first edition of the AI\-Native Meetup will take place on Thursday 25th of June 2026 \- Accenture office is located in boîte 100 Rue Picard 11\, 1000 Brussels [get directions](https://www.google.com/maps?cid=1363199207277627398) AI moves fast. Keeping up is exhausting. This meetup is built for the people in the trenches, Software Engineers, Data folks, Analysts, Managers and AI leaders to help them keep-up with latest ways of working with Agentic AI. Specialists and generalists welcome. **🗣️ Speakers:** **#1 Arnaud Gueulette** (Datashift): Ship It With AI: From Idea to Prototype in Days, Not Months #2 Gaël Mercier (STIB-MIVB): who’s driving? AI, your brain, and the autopilot trap. #3 Siwar Dean Madrane (Accenture): Beyond Vibe Coding: The Developer’s New Craft Thanks to Accenture for sponsoring and hosting the AI-Native Meetup.

**Update: The event has been cancelled due to exceptional heatwave conditions.** It will be rescheduled and replanned at a later date. We will share further details as soon as a new date is confirmed. Thank you for your understanding. **"We all agreed"... did we, though? Or did we just stop arguing?** This month we open the facilitator's toolbox and test, hands-on, several techniques for building real consensus: prioritizing, gauging support with Kaner's Gradients of Agreement, getting to the true source of disagreement. You won't watch a presentation - you'll be part of the group, we'll test the tools together and reflect on what kind of situations they are best used. Come ready to disagree productively. Led by [Sylvain Vezolles](https://www.linkedin.com/in/sylvainvezolles34d13d93d/), who brings his passion for theater to this interactive workshop, participants will be challenged to rethink how they connect, listen, adapt, and influence.

**Join us for a beautiful summer evening at Bozar Rooftop for the Casavillani Rooftop Sessions — a relaxed open-air gathering with house music, good vibes, drinks, food, and sunset views over Brussels. 🌆✨** Casavillani is bringing fresh house records and DJs to the rooftop, creating the perfect atmosphere to meet new people, enjoy the music, and spend a warm evening together above the city. Entry is free, but spots can be limited. 🎧💃🕺 **📅 Date: Thursday, 25 June** **🕕 Meetup time: 19:00** **📍 Meetup location: In front of Bozar, Rue Ravenstein 23, 1000 Brussels** **🎟️ Entry: Free** **🍹 Drinks & food: Available on the rooftop** Important note: I have not booked any table, private area, or reserved place for the group. This is an informal meetup where I simply bring people together to enjoy the evening as a friendly group. We will meet outside Bozar and go up together, but entry and space on the rooftop depend on the venue’s availability and rules. Everyone is responsible for their own drinks, food, and personal expenses. 😊 Come with good energy and an open mind — it’s a perfect event for socializing, dancing, and discovering one of Brussels’ nicest summer rooftop spots. 🌞🥂 Join the WhatApp group: [https://chat.whatsapp.com/EimXMXyRBjo7PfHRoVc1j7](https://chat.whatsapp.com/EimXMXyRBjo7PfHRoVc1j7) Personal number: 0471695419

* Understanding why native AD tools fall short in change tracking * Tracking who changed what, when, and from where in real time * Detecting unauthorized or suspicious changes instantly * Simplifying forensic investigations with detailed audit trails * Strengthening accountability with actionable insights

Socializing and Networking 🛜🆕 at PLUX on Thursday. Making new friends and drinking 🚰🎈🎉🚿🌊. Everybody Welocme, locals, expats or new 🆕 in town.

♟️ **Rejoignez l’aventure Knight Clubbers !** ♟️ Venez vivre une soirée où l’échiquier devient un champ de bataille, entre bonne humeur et esprit de compétition. 🔗 **Inscription gratuite** : [S'inscrire](https://knightclubbers.com/meetup/665487?utm_source=meetup&utm_medium=social) ✨ **Des parties pour tous les niveaux** Débutant curieux ou stratège aguerri, chaque partie est l’occasion parfaite pour progresser et rencontrer d’autres passionné.e.s. 🕒 **Liberté totale – Jouez à votre rythme** Participez aux duels ou observez dans une ambiance conviviale. 🏆 **Défiez vos adversaires et grimpez au classement** Accumulez les victoires pour tenter de devenir Roi ou Reine de l’Arène. 👑 **Prêts pour le défi ?** Rejoignez Knight Clubbers et entrez dans la légende !

Ciao a tutti! Ci troviamo dalle 18:00 per un picnic nel parc du Cinquantenaire, vicino alla Torre di Tournai. Portate quello che vuolete, un po' di cibo, qualche bevanda, giochi italiani. Il punto di incontro sara communication nel stesso giorno. Potete chiamare Salvatore sul suo cellulare : +32 495 45 99 75. È un incontro "informale" perché non è un evento strutturato ma piuttosto un gruppo di persone che si riuniscono per parlare e praticare l'italiano. Anche i nativi italiani sono benvenuti :) Tutto ciò che serve è un sorriso. Puoi anche portare un amico! Ci vediamo lì 😎 👉 **Importante:** *È obbligatorio essere iscritti all’evento su Meetup per partecipare. L’iscrizione è importante per gli organizzatori, perché permette di conoscere il numero dei partecipanti e di garantire la sicurezza e il benessere di tutti i presenti. - Se cambiano le vostre circostanze e non potete più venire, annullate la vostra partecipazione per lasciare posto ad altri. - Vi chiediamo di assicuravi di pagare i vostri consumi, per evitare che gli organizatori saranno rimasti a pagare per gli altri. - Si prega di non parlare di politica cosi ci godiama la serata in tranquilita, di rispettare tutti i partecipanti e di non trattare l’incontro come un appuntamento romantici o intimo: l’obiettivo è semplicemente praticare e migliorare l’italiano in un ambiente piacevole e rilassato. PS : IT - Tavola di conversazione in italiano a Bruxelles, ogni venerdì dalle 18 alle 22. Posto variabile in funzione del tempo : Parc du Cinquantenaire se il tempo è caldo e secco, altrimenti in un bar da precisare. FR - Table de conversation en italien à Bruxelles, chaque vendredi de 18h00 à 22h00. Lieu variable en fonction de la météo : Parc du Cinquantenaire par temps chaud et sec, sinon un bar à preciser. NL - Conversatie Italiaans in Brussel, elke vrijdag avond van 18u00 tot 22u00. Locatie in functie van her weer : het Jubelpark bij bij warm droog weer, anders een bar te bepalen. EN - Conversation table in Italian in Brussels, every Friday from 18:00 till 22:00. Location depending on weather : at Parc du Cinquantenaire / Jubelpark if weather is hot and dry, otherwise in a bar to be defined.

This workshop series is a **follow-up to the ESP32 Robotics workshop**, but with a different concept. Here, there will be no subject set in advance, instead **all participants are welcome to join at any point and at any level, from beginner to expert**. Beginners will be guided though the basics (C programming, how to use measurement tools, soldering, PCB design, etc…) and can get advice on what tools and kits to start with, others can come with their own projects to get help or share some knowledge. ## Requirements * Bring your own laptop (Windows, Linux or Mac) * Any microcontroller/dev kit to develop your project(s). If you are a beginner and don’t know what to buy, come and we’ll find the best starter kit for you ! * A strong desire to learn stuff, good mood and some patience !

¡Ey, qué tal! ¿Crees que podrías sobrevivir solo con tu español? Vamos a ponerlo a prueba con un picnic 🧺 en el parque.🌳 📍Dónde: Cinquantenaire, "Tour de Tournai" (búscalo en google maps). 💡La idea: Empezamos con una mini intro y luego hablamos de todo: actividades, viajes, música… Y si tienes ganas, ¡jugamos a algo! Todo en español, así que ¡prepárate para la inmersión! Dependiendo de cuántos seamos, podemos dividirnos por niveles para que todos disfruten al máximo. 🎲 Juegos: Juegos rápidos y divertidos (tipo UNO o Exploding Kittens), también algo para moverse un poco el cuerpo (bádminton, pétanque, lo que apetezca 😄). Yo llevaré unos, pero si tienes alguno que te guste, tráelo sin miedo. Eso sí, los juegos con texto, ¡en español! ⏱ Horarios: Empezamos a las 14:00, pero si llegas más tarde, no pasa nada, te unes cuando quieras y te quedas el rato que quieras. 🚦Lista de espera ¡No existe! 😄 📢 Más info se puede compartir en el chat o por DM —asegúrate de revisar tus mensajes el día antes para no perderte nada crítico . ‍🐈‍⬛ El Código de los Amigos: Nada de formalidades – aquí venimos a divertirnos Respeto y buena onda – si no, ¡¿Los errores?! ¡Nos dan igual! Y si algo se complica, volvemos a lo que conocemos mejor: 💃🎭🎸 ¡Hasta luego!

*Due to the summery weather forecast lets meet in Parc Royal instead. Find us at one of the tables at Woodpecker. If you cannot find us call* me via 0032 485 38 09 23 ----------- Let's read and discuss non-fiction together. In **June** we will be discussing "The Pragmatist’s Guide to Life: A Guide to Creating Your Own Answers to Life’s Biggest Questions" by Simone and Malcolm Collins. For more information about the book check out goodreads: [https://www.goodreads.com/book/show/38452905-the-pragmatist-s-guide-to-life](https://www.goodreads.com/book/show/38452905-the-pragmatist-s-guide-to-life) How it works: - 10-15min Introduction round - 1 - 1,5h Free discussion around the book - 10min selection of the next book. (We will vote between three possible books. I bring two suggestions and we select a third one from the group. So if there is a book you like to discuss feel free to put it forward.) Don't worry if you cannot finish it in time. Just join us for a coffee or tea and a good conversation. :) Happy reading!

Hi everyone, This coffee morning event is @MIR Concept Coffee Store! Saturday, 27 June 2026, from 10:00 - 13:00. MIR opened its doors 4 years ago, right off Place Jourdan. Doriana, the owner, is a super nice host, and is excited to have our group as her café. The café is very beautiful and has great coffee, and many yummy food options. Their Instagram channel: https://www.instagram.com/mirconceptstore/ **The address is:** MIR Concept Coffee Store Rue Gray 4A 1040 Etterbeek *** 1. The **prime time** of the event is **10:30 - 12:30**. That's when most people will be there. 2. When you enter the gallery, it's either on the right-hand side or left-hand side of its hallway, depending which entrance you take. 3. If you intend **to join past 12:00** (high noon), then there is no need to register. Just come and join! 4. **DON'T forget to cancel** if you can't join! 5. **Please, be respectful towards each other during the event. (And after ;))** **As always, feel free to follow us on INSTAGRAM!** [https://instagram.com/weekendmorningcoffee?igshid=OGQ5ZDc2ODk2ZA==](https://instagram.com/weekendmorningcoffee?igshid=OGQ5ZDc2ODk2ZA==) **THE STRUCTURE of THE EVENT:** * I will post the event on Saturday/Sunday evening for the following Saturday. * I send out a reminder to everyone on Friday. * There is sometimes a waiting list. * In case RSVP is closed (once there are 10-15 people on the waiting list), I might reopen it on Friday, depending on the number of cancellations in the meantime. * **For everyone on the waiting,** please check your status and messages on Friday evening the latest. I message everyone on the waiting list on Friday. * **Please, move to "not going" AS SOON AS you know that you can't come anymore, that includes everyone who is on the waiting list.** **IMPORTANT:** * **Please, be respectful towards each other during the event. (And after ;))** * When you register yourself, be careful not to register accidentally a +1 guest (unless you bring a guest). It happens very often. * If you have any questions then, message me. *** **A MESSAGE FOR NEWCOMERS:** *In the three years of hosting this coffee group, I have met many people who struggle with anxieties when coming to an event for the first time. Sometimes, it took them more than one attempt before being able to join.* *Occasionally, people reach out to me before the event, and I have always been grateful for that as it offers the opportunity to communicate with each other and to find the best and most gentle way for that person to join the group.* *I would like to encourage everyone who struggles with this to contact me before. It would really be too bad if you can't join us, as it mostly gets better the second or third time you come.* *In addition to that, if you arrive and notice any signs of nervousness or fear, you can always let me know right then.* **THANK YOU AND SEE YOU ALL ON Saturday!**

**Once a month** (on the last Saturday), **we meet to paint/draw together in pleasant company ☺️✏️🎨** Your skill level is not important, only your desire. **Please note that *this is not a lesson*, it is a meeting where everyone paints what they want, how they want, with what materials they want.** If you want a lesson, we have many different ones, you can find them on our website: https://lu.ma/malinamore.studio 🌷 **Participation fee for this event is minimum 5 euros** **(we strive to make this event affordable for everyone ☺️** but if you’d like to support the project, you’re always welcome to donate more) ❤️ **Please pay here:** https://luma.com/4yudp8u7 **Bring your own materials if you have them, and if not, no worries at all!** **You can borrow studio materials for an extra 5 euros.** We have paper, acrylics, gouache, pencils, colored pencils, and markers. How does it work? * 15min - Introduction * 15min - Tour de Table * 1,5 h - Let's draw and paint ​**Please note: the event will start at 14:00.** **Please, don't be late!** **VERY IMPORTANT:** ✨ Please, move to "Not going" as soon as you know that you can't come anymore! **✨** Follow the Malina More Studio on INSTAGRAM ☺️ [https://www.instagram.com/malinamore.studio/](https://www.instagram.com/malinamore.studio/) 🌷 See you there 💫

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

PLEASE NOTE!!! This event will be In-Person for our 2nd Improving collab! If you know the [Columbus Unity group](https://www.meetup.com/columbus-unity-user-group/) location, we'll be at the same place. This is our 2nd event at this location so bare with us as we grow into this space. There's paid street parking on Saturdays but you can also pay to park in any of the local garages. See image of [parking map here](https://drive.google.com/file/d/1Mr9_LFIggbs-0_Zd3AJTGNqEhgMf2TzQ/view?usp=sharing). \-\-\- On the last Sunday of the month, we're having our usual end-of-the-month social gathering with our GameDev Meetup meeting. There will be announcements and presentations followed by some social networking Let's continue the conversations with good vibes and friends. All are welcomed from all ages and backgrounds to this public event. If we can, we'll be streaming or uploading the video later via our COGG YouTube channel here: [https://www.youtube.com/@TheCOGG/streams](https://www.youtube.com/@TheCOGG/streams) (Also please do subscribe if you have not done so!) No game development experience required! If you are interested in doing a 20 minute game development related presentation, please fill out our form online here: [https://goo.gl/forms/lVdTJZiNJewlPJuj1](https://goo.gl/forms/lVdTJZiNJewlPJuj1) Or e-mail us at [info@thecogg.com](mailto:info@thecogg.com) with the following: Your Name, Company/Affiliation, Name of Your Game/Topic, Description, Tech Needs, and Your Contact. Be sure to check out our Discord for real time news updates: [https://discord.gg/NrBhuNQ](https://discord.gg/NrBhuNQ)

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

If you are interested in selecting investment choices for your 401(k) or other workplace savings plan, minimizing your income tax liability, or identifying the most effective investments for your brokerage account, we are the group for you. We are a local chapter of Bogleheads, whose investment strategy can be found here: https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy Or you can peruse the Boglehead forum here: https://www.bogleheads.org/index.php I look forward to seeing you there. Mark Vonder Haar

💰 **Build Passive Income with AI Ebooks – Masterclass** Build a passive publishing business with AI — from idea to income. ⚠️ Your spot is only held once you complete registration below. ### [🔗 SAVE YOUR SEAT](https://aiventurelab.org/product/AIEbookBusiness?city=Columbus&groupurlname=network-of-book-lovers-and-discussion-meetups&startgmtdatetime=2026-06-30T22:00:00Z) --- What's covered: - Publish across platforms for passive income - Format and list ebooks so they actually sell - Find profitable niches using AI research tools *One system. Recurring income.* ✍️

**Welcome to the Women’s Columbus Bogleheads® Sub-Group** This sub-group is for **women who want to learn and discuss finances in a safe, supportive space**. For those interested in moving towards financial independence and retirement by learning investment basics, choosing your 401(k) investments, minimizing taxes, and more. We’re a local chapter of **Bogleheads®**, following a long-term, practical investment philosophy: [Investment Philosophy](https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy): https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy [Bogleheads Forum](https://www.bogleheads.org/index.php): https://www.bogleheads.org/index.php No question is too small, and no experience is too simple. Share, ask, and learn — at your own pace, without judgment, in a group of like-minded women. Let’s build confidence and knowledge **together**!

Our next much-awaited **COLUMBUS** meetup is **Tuesday June 30th from 7-10 pm EST at ACE OF CUPS**. Meet patients, cultivators, processors, dispensary managers/staff, physicians, home growers, educators, activists, nonprofits, artists, attorneys, business owners, writers, students, and supporters to network, share our knowledge, collaborate, support each other and make new ones! Hope you will be there too! Save the date and pass the word. **Please RSVP** so we know who is coming and how many to expect. Find us to say hi and we will introduce you to others. We should be easy to spot. (The happy-looking group wearing cool nametags! See photos from our past events.) Sign in, grab a name tag, start your own bar/food tab, meet old friends and make new ones! Everyone is welcome. SEE YOU THERE!