Community

Tijdens de maakavonden van Meet Je Stad soldeer je je eigen meetkastje dat temperatuur, luchtvochtigheid en fijnstof\* kan meten. Het solderen is geschikt voor iedereen: van beginner tot expert! Daarnaast bieden we begeleiding, dus hoef je niet bang te zijn dat je er niet uit komt. Ter deelname betaal je €15 voor de materialen. Vaak lukt het niet om al het soldeerwerk binnen één avond af te krijgen, maar dit is geen probleem; tijdens onze volgende maakavonden kun je langskomen om je werk af te maken. Inmiddels zijn er in de stad Utrecht nu zo’n 150 mensen die hun eigen meetkastje hebben gesoldeerd. Als je kastje af is wordt hij geregistreerd en kun je hem bij jou thuis ophangen/neerzetten. Hierbij krijg je instructies zodat je de juiste locatie kunt kiezen en je metingen zo betrouwbaar mogelijk zijn. Als het dan eenmaal hangt kun je via de kaart op de [website van Meet Je Stad](https://meetjestad.net/index3.php?loc=Tb) bijhouden welke metingen je kastje neemt: zo kun je bijvoorbeeld zien op welke momenten het bij jou het warmst is en vergelijkingen maken met waardes van andere meetkastjes. Dat kan door middel van [deze tool](https://mjs-datavisualisation-fez7kynngq-ez.a.run.app/) die je helpt om grafieken te maken. Dan kan je er achter komen hoe jouw omgeving ervoor staat in vergelijking met de rest van de stad. Meet Je Stad organiseert ook kennisavonden met gastsprekers die vertellen over hitte, fijnstof en andere burgerinitiatieven in de stad. Dit zijn ook gelijk geschikte momenten voor deelnemers om met elkaar in discussie te gaan over hun metingen en ondervindingen. Zo hopen we een netwerk van betrokken inwoners te creëren en meer te weten te komen over de milieuomstandigheden in de stad! *\*De fijnstofsensor is optioneel en kost 20 euro extra. Indien je deze bij je meetkastje wilt moet je deze via een draad met een stroombron binnen 15 meter kunnen verbinden.* **Organisatie:** Milieucentrum Utrecht (MCU) in samenwerking met de Makerscommunity HaHaHo. **Locatie:** Bibliotheek Neude, Huis van Actief Burgerschap (begane grond) **Kosten:** 15 euro voor materiaalkosten, 20 euro extra voor fijnstofsensor. *Bij te weinig aanmeldingen kan de workshop afgelast worden.*

If you are living in The Netherlands, by now, you may well have noticed the amount of open water. If you enjoy cycling in the city, you may wish to feel safer as you navigate the bridges and canals. And you may also want to get ready for visiting the beach, pools or the many lakes this summer. Learning how to swim takes approx 1 year and it all starts with the very first lesson. New comers enroll via our website and pay € 30,50, this is the first lesson and a goody bag. After the class you agree with the personal swim coach how to continue to obtain your final objectives. Enrolling is only possible via [www.your-personal-swim-coach.nl ](https://www.your-personal-swim-coach.nl/)hence a rvsp via meetup is not enough.

Samen sporten, gewoon voor de fun, elke week een divers programma, met allerlei verschillende sporten. Je hoeft niet de beste te zijn, maar wel zin hebben om samen te spelen en te leren. Tijdens een training doen we verschillende spelletjes, basketbal, voetbal. volleybal, spikebal, honkbal. Kom je ook, de bal ligt bij jou!! Eerste keer meedoen is altijd gratis, daarna kan je beslissen of dit voor jou is, of niet!! Dus kom een keer proberen. Kan je niet op deze dag, we sporten ook op andere dagen nl Zondag om 9:30 of Maandag om 20:30 Stuur mij een berichtje als je op die dagen een keer wil proberen! The amount of people rsvp'd to this game doesn't match the real number of people at the event, as Meetup is only used for promotion purposes.

New Year, New Sport! ​Whether you've never played volleyball before or it’s been many years since you last hit the court, you are very welcome to join our Beginner Group! ​We train every Monday at 9 PM at Gymnasium Bibian Mentel in Zeeburgereiland. ​Come learn the basics, get moving, and meet new people in a fun, relaxed environment. ​Get more info here: ​WhatsApp Group: https://chat.whatsapp.com/EnPEK1bHLiTGdpqz6Vtbm4 ​Instagram: @brazucavolley

Every Monday evening from 19.00-19.45 hrs both at our center in Amsterdam and online. Start your week with calm and clarity. Join us every Monday evening for a 45-minute guided meditation in Amsterdam-Oost or online. No registration is needed—just walk in, relax, and let go. Starting the week with a moment of stillness and contemplation can transform your mindset. Meditation can help reduce stress, increase focus, and cultivate a deep sense of peace. Practicing in a group enhances the experience, connecting you with a community and amplifying the collective calm. Whether you’re new to meditation or experienced, this is your time to reset, recharge, and set the tone for the week ahead. Zoomlink on the website - www.maitreya.nl

Join us for an hour of writing! We’ve discovered that it’s strikingly helpful to write with other writers\. See if it’s true for you at the 7th floor of The central library Amsterdam on Monday evenings. Be it a book, blog, script, essay, dissertation, resume, melody, poem or just plain work stuff, you are invited to write it with us. No one will see what you've written or give you unsolicited advice. Instead of just thinking about writing, come and get some real writing done. SCHEDULE: 7:15 pm - Quick introductions 7:30 pm- Timer starts: write for 1 hour 8:30 pm- The End: chat, take off, or keep writing OPTIONAL SOCIALIZING happens at 8:30 pm after the writing is wrapped. Writing is very solitary. Connecting (and sometimes even commiserating) with other writers is a cool thing. BEING LATE IS OKAY: just show up and get settled, then check-in with me after the session. (I’ll be the person with the Shut Up & Write! sign.) If you were on time, please be willing to make room for the friendly latecomer. Happy writing and I look forward to seeing you at the 7th floor Cafe of the central library Amsterdam What Should I Bring? Whatever you need to be able to write! Bring earbuds/earplugs if you want to block the cafe’s overhead music or the occasional conversation by other patrons. Please come with your devices pre-charged, since we probably won't be always sitting somewhere with charging possibility. Other Important Details: You would need to have the library membership in order to use the Wifi. Although compulsory consumption is not required, bringing own drinks and food is officially prohibited.

Join Creative Table for an interactive and fun Create & Connect session in Apeldoorn aimed at fostering community building. Unleash your creativity in a supportive and inclusive environment, where members can connect, share ideas, and collaborate on various art projects. Whether you are a seasoned artist or just looking to dabble in something new, this event welcomes all skill levels. Come prepared to mingle, create, and be inspired by the diverse talents within our community. Let's paint, draw, and sculpt our way to stronger connections and lasting friendships.

Join us for a fun session of improv theatre in English! A great opportunity to meet new people in Utrecht and learn something new with Improv Utrecht. Everyone can partcipate, you don't need any experience in theatre nor fluency in English. **Special topic: Movement & Theatre improv** Movement improvisation is a wonderful basis for all other forms of improvisation. Well before we had language we had movement; there is so much that can be expressed without words. Instead of the games that are used in theater improv, we work mostly with “scores”, or a kind of blueprint to what will happen in a space of time. A kind of a structure. We will do exercises that originate from Viewpoints, physical theater, and other forms of improvisation (including a bit of Contact Improv at times), and moving in/with/through the space, non verbal contact and how we can communicate through our bodies. Anyone can participate, you don’t need any experience in movement or theater nor complete fluency in English. This workshop is without shoes: bring non-slippery socks In this session you will: * Meet fellow international and local players. * Learn the basics of improvisation, a 21st-century skill that is useful in many aspects of life. * Get out of your head. * Enjoy failing. * Play funny and moving theatre games. * Laugh a lot, while surprising yourself and others. Doors open: 19:50-20:00, come in with the others ([SIDE entrance, at the Troelstralaan](https://maps.app.goo.gl/ntLDUqbkDxMHjp7B7)). After 20:01 the door may be closed, but you may find a participant who knows the door code. Workshop: 20:00-22:00 Every Friday except in school holidays Afterwards we have drinks at [O'Leary's](https://maps.app.goo.gl/gL878K1MZf8v5fpm7) pub together ### How to sign up Full details about how to sign up and any other questions you may have can be [found on our website](https://www.improvutrecht.nl/drop-in-workshops/). An RSVP in this Meetup event is not enough! We track attendance by counting the attendants in GrasshopperSignup. If you flag yourself as attending and can no longer make it, please delete your x in the sheet so that someone else can take your spot. If you leave your contact details at the Signup form we will contact you if there is a problem with a drop-in you are scheduled to attend. We also have a WhatsApp group with a variety of members from across Utrecht where we share events and updates. You can find our courses and shows on [our website](https://www.improvutrecht.nl). Participation is pay-what-you-can, but we suggest a donation of €10-20 by cash or Tikkie to help cover costs (location, travel) and show your appreciation for our professional trainers who dedicate their Friday to promoting improv.

Hi✋ At[ Data Tribes ](https://www.datatribes.nl/)we organise Meetups because we truly care about sharing knowledge both inside and outside the organisation. We believe that it is beneficial to us and to the market as a whole to connect, create, learn and grow together! **The agenda** // Doors open 6.00pm // Drinks and Pizza’s 6.30pm // Start presentations 7.00pm **Henk van der Valk:** "Optimizing the Azure cloud?" ***Who really cares about Cost & Co2?*** // Start networking 9.00pm // End Meetup 9.30pm Greetings, Data Tribes Inc.

** ABOUT OUR WATERCOLOR PAINTING PARTY / AMERSFOORT** Amersfoort - Utrecht Province / Center of the City / Easy access from train station. Create your very own **portrait, animals, landscape, or figurative** masterpiece in only **2.5 HOURS using watercolor and our secret mixed media techniques!.** This session is not about perfection; it is about capturing emotions and personal expression. **No experience required** **\- trust us\!** our professional artist will guide you step-by-step through this unique self-portrait journey. You can look forward to a fun and exciting evening with other participants, **so it doesn't matter if you want to come with friends or alone - you are very welcome!** This is the perfect after-work or weekend activity where you'll unleash your creativity while creating something deeply personal. You will create a portrait combining painting, drawing, and creative techniques to bring your unique vision to life. When finished, you'll take home your newly created self-portrait artwork to cherish or share with loved ones. Each participant will have pencils, colored pencils, watercolor, acrylic/gouache paints, and a surface. You'll work from an image we will bring. **️ READY TO HAVE FUN?** Get your Ticket and book your seat **✨[HERE](https://buymeacoffee.com/artloversclub/e/430555) ✨** **Questions?** Speak with a member of the team in **[WHATSAPP HERE](https://chat.whatsapp.com/J3Y5yeWUhvbJM98bqty2WP) ** .................................... ** WHAT'S INCLUDED?** All supplies included **2.5-HOUR [TICKET SESSION](https://buymeacoffee.com/artloversclub/e/430555)** ️ **EXTRA BONUS:** **FREE TICKET**️ to participate in our Drawing and Painting Cafes in Amersfoort or Our Online Still-Life sessions if you live far away. New friendships and Conversations Freedom to work at your own pace **English tutored activity** (And of course, you can speak in your local language with your friends!) ⭐ No experience needed **️ BOOK YOUR SEAT IN ADVANCE ✨[HERE](https://buymeacoffee.com/artloversclub/e/430555) ✨!** **Questions?** Speak with a member of the team in **[WHATSAPP](https://chat.whatsapp.com/J3Y5yeWUhvbJM98bqty2WP) ** ** 2026 CALENDAR OF UPCOMING EVENTS:** First Sunday or every month from 11.00 AM - 1:30 PM. .................................... **️ ART LOVERS CLUB / ABOUT US** **ART LOVERS CLUB** is a community where art enthusiasts come together to explore their creativity and connect with new buddies through various events and sessions ( In-Person and Online) . Whether you're a seasoned artist or just starting, we have something for everyone!⭐ To share with you more about what we do, you can see here the overall atmosphere of our events in Amersfoort and also follow us if you want⭐: **[https://www.instagram.com/art_lovers_social_club](https://www.instagram.com/art_lovers_social_club)** **Questions?** Speak with a member of the team in **[WHATSAPP](https://chat.whatsapp.com/J3Y5yeWUhvbJM98bqty2WP) ** ** 2025 CALENDAR OF UPCOMING EVENTS:** First Sunday or every month from 11.00 AM - 1:30 PM. **See you soon. We are looking forward to painting and having Fun Together! ‍‍‍‍**

Donderdag **26 februari 2026** is het weer tijd voor onze **Techday**: hét vaste moment waarop we kennis delen, elkaar inspireren en nieuwe ideeën direct in de praktijk brengen. Deze editie komt een spreker van Onyx langs. Onyx is gespecialiseerd in cybersecurity. Tijdens deze techday worden theorie, praktijk en nabespreking gecombineerd met directe toepasbaarheid in jullie dagelijkse werkzaamheden. Tijdens de Techday duiken we hands-on in veelvoorkomende kwetsbaarheden en misconfiguraties binnen moderne softwareontwikkeling. Theorie, demo’s en realistische scenario’s wisselen elkaar af. Met de interactieve CTF‑opdrachten leer je niet alleen hoe deze problemen ontstaan en misbruikt worden, maar vooral hoe je ze direct kunt toepassen en voorkomen in je dagelijkse werk. **Wanneer:** Donderdag 26 februari 2026 **Wat:** Cybersecurity in de Praktijk: Hands-on met Onyx **Voor wie:** Iedereen die nieuwsgierig is en wil leren **Agenda** 14:45 - 15:00 - Inloop 15:00 - 18:00 - Opening en introductie Praktijkvoorbeelden: Wat zijn wij in het echt tegengekomen Security misconfiguration: Gezamelijke spot-de-fout met code-snippets CTF opdrachten 18:00 - 19:00 - Eten en napraten We zien je graag op de Techday!

**ArnhemJUG** We are excited to announce the second meetup of 2026. OpenValue Arnhem is once again hosting us for the February meetup! **Agenda** * 17:00 CET walk-in * 17:30 – 18:30 Food and drinks * 18:30 – 19:30 talk: **Catching the 137-Killer: A Java Memory Forensics Investigation** by **Martijn Dashorst** * 19:30 – 19:45 break * 19:45 – 20:45 talk: **Building AI Agent Platforms: Architecture, Communication, and Standards** by **Pascal Wilbrink** * 20:45 – 21:30 drinks **Catching the 137-Killer: A Java Memory Forensics Investigation** Your Java application is running smoothly, blissfully unaware of the danger lurking just around the corner. Then—without warning—it vanishes without a trace. Upon investigation, you discover the virtual remains of countless slain JVMs, each marked with the same cryptic number: 137. A serial killer is on the loose in your cluster. This true crime investigation will walk you through the differences between JVM memory areas, the mechanics of container OOMKills, analysing Grafana dashboards for memory and thread anomalies, interpreting heap dumps, and utilising JVM Native Memory Tracking (NMT) to uncover hidden native memory consumption. You’ll master practical forensic techniques and proven prevention strategies—from memory tuning tactics and balancing heap vs. non-heap allocations to leveraging large language models (LLMs) for advanced forensic analysis. These skills will help ensure your applications stay alive—even when something’s out to get them. Just like in a real murder mystery, we may not know whodunnit... but with Martijn Dashorst leading the investigation, you're sure to get closer to the truth. **About Martijn Dashorst** My Java experience is finally old enough to drive, vote and drink a beer (not all at once). One of the remaining Eclipse users, loves Java, relationship with Maven is complicated. Martijn Dashorst has worked since 2004 at Topicus and has used Java since 2002. Loves server-side Java. You might know him from Apache Wicket—he's dabbled somewhat in that framework. Loves his family and cats, finds Douglas Adams' description of the Sirius Cybernetics Corporation's technology very apt to the current technology landscape. **Building AI Agent Platforms: Architecture, Communication, and Standards** AI systems evolve from standalone models into connected, agent-based ecosystems, new architectural patterns, protocols, and standards are emerging. Concepts such as AGUI, A2A, A2UI, and MCP-based applications are changing how intelligent systems are designed and integrated. This presentation explains how these approaches affect system structure, responsibilities, and interoperability. Using architectural diagrams, it shows how AI agent applications communicate and collaborate through standardized interfaces, and provides guidance on building scalable and maintainable AI platforms. **About Pascal Wilbrink** Pascal is a senior software engineer at OpenValue with over a decade of experience and a strong interest in applied AI and intelligent automation. He enjoys exploring how technology can make developers’ lives easier and software more resilient. When he’s not experimenting with new ideas or building open-source tools, Pascal likes to learn by doing and turning complex problems into practical solutions.

Join us as we get together to get together to help those in need at this CMG Gives Back event! For this event, we’ll help prepare food, serve meals, assist residents, wash dishes and clean surfaces at Fath Mission – Grant Kitchen. We have a great little community of Movie Group friends so rather than see a movie this time, we’ll help “Create a better world” by helping serve those in need. Here are complete details and our plan for this event: FAITH MISSION – GRANT KITCHEN: The Faith Mission kitchen and dining room serves residents 3 meals a day, every day of the year. Our group will help prepare food, serve meals, assist residents in the dining room, wash dishes, and clean surfaces. PLAN: We will be preparing / serving / cleaning for BRUNCH from 10:30am to 12:30pm and have space for a total of 7 volunteers. Please arrive at 10:15am and wear closed-toe shoes and long pants. LOCATION: Faith Mission – Grant Kitchen is located at 245 N. Grant Ave. Enter the kitchen at Dock 1, indicated in the attached map. On-site and street parking are available in the surrounding area. Below are some links / attachments with additional info/details: \* LSS Volunteer Guidelines: Uploaded to photos. \* Parking Map Info: Uploaded to photos. \* LSS Faith Mission Orientation Video: https://www.youtube.com/watch?v=Bp46_6ay6iA \* Link with Additional Details / Info: https://lss.vomo.org/opportunity/faith-mission-grant-kitchen-2025 IMPORTANT REMINDER: Our group will be providing the all of the volunteers on this day so a firm RSVP count is essential. Please only sign up if you are certain you’ll be able to attend. If something unavoidable comes up, please update your RSVP no later than one week prior to the event. With very few exceptions, no shows or cancelations within 1 week of the event will not be eligible for future CMG Gives Back events. I appreciate your understanding as we try to ensure the agencies have the volunteers needed to provide the essential services they provide to the vulnerable population they serve. THANK YOU: This CMG Gives Back event provides an opportunity for YOU to get involved in helping others! Benefits go well beyond the help we give to others. Volunteering provides a wide range of personal benefits, including positive effects on mental and physical health, reduced stress/depression/anxiety, increased happiness and improved purpose, life-satisfaction and personal well-being! Plus, the opportunity to get involved, connect with others and help those in need. PARTNER AGENCY: This event is hosted by Lutheran Social Services (LSS), which serves thousands of people in need each day in 27 Ohio counties by addressing the four core societal issues of food, shelter, safety and healing. LSS offers food through the LSS Food Pantries, housing and supportive services through LSS Faith Mission and LSS Faith Mission of Fairfield County homeless shelters, domestic violence services through LSS CHOICES for Victims of Domestic Violence, senior living and health care, affordable housing communities, and other services that uplift families and strengthen communities. Look forward to seeing you there, Dan

Communication is everything in life! You are only as successful as your ability to communicate. \- What if you could confidently talk to anyone? \- What if you had the ability to calmly control every conversation? \- What if you could close that sale\, ask for that date\, make new friends\, repair problematic relationships\, get that raise\, or effortlessly express any idea with confidence? You can! The secret to success relies on your ability or inability to effectively communicate. Attend a free seminar and gain a better ability to communicate. 1266 Dublin Road, Columbus, OH 43215 Hosted by the Church of Scientology of Central Ohio For more information, contact Rhiannon, the Event Host at 614-221-5024

Coffee and conversation at [Stauf's Coffee Roasters](https://www.staufs.com/) in German Village. Street parking is free on Sundays.

How do you feel happier with people? How do you get into the spirit of group activities? How do you get rid of the anxiety of communicating in front of people? In this meeting, you will learn the secrets of how to connect with people, open yourself up to people, and have a grand time being yourself. This meeting will be led by an expert who has been working with people just like you to feel happier and improve communication skills for over 10 years. Be sure to click on the red "Attend" button below to come to the event. We look forward to seeing you there. This group is created by the Dianetics & Scientology life improvement center.

Communication is everything in life. You are only as successful as your ability to communicate! \- What if you could confidently talk to anyone? \- What if you had the ability to calmly control every conversation? \- What if you could close that sale\, ask for that date\, make new friends\, repair problematic relationships\, get that raise\, or effortlessly express any idea with confidence? You can! The secret to success relies on your ability or inability to effectively communicate. Attend a free seminar and gain a better ability to communicate. 1266 Dublin Road, Columbus, OH 43215 Hosted by the Church of Scientology of Central Ohio For more information, contact Rhiannon, the Event Host at 614-221-5024

WQC has weekly Thursday night social nights at the Westerville Java Central. Come and grab a coffee and connect with the community: low stakes, chill environment, and tasty drinks. No registration is required; come as you are.