Hybrid Cars

Hello to all! I’m happy to announce our next monthly meetup will take place at **MaMa** (Preradovićeva 18) on **Monday, April 20th**, starting at **6 PM.** We’ve got two interesting talks, and afterward, we’ll head over to **"Old Pharmacy Pub"** (Andrije Hebranga 11) for some networking, so stay with us! \*\*\* **Declarative Generative UI: Schema-Constrained Dashboards Your AI Can't Break** by Vladimir Adamić In 2026 users expect to configure your platform with a prompt. But if you're a platform owner, letting an AI generate arbitrary UI is a non-starter — you can't guarantee branding, correctness, or security. In this talk I'll show you **Declarative Generative UI**: a pattern where an AI agent generates a JSON component tree constrained by a strict schema, and a renderer maps it to predefined React components. The AI picks the layout and wires the data — but it can only use building blocks you've approved. I'll do a live code walkthrough of an open-source observability platform (@kopai/app) that uses this approach in production. We'll trace the full pipeline: Zod catalog → JSON Schema → agent prompt → generated tree → recursive React renderer. We'll look at what works, where it breaks, and how agent skills and schema versioning help make it robust. You'll walk away with a pattern you can apply to any platform that needs AI-configurable UI without giving up control. **Finally fullstack react** by Fran Zekan TBA Happy to see you all at MaMa! Marcela

**Stress** is one of the greatest challenges of modern life. When stress becomes long-lasting, it can quietly turn into anxiety, affecting both mental and physical well-being and increasing the risk of more serious health issues. Through regular **mental hygiene**, we can gently influence our bodies and restore balance. **Autogenic training** is a method that uses focused attention and deep relaxation to reconnect the brain and the body. By activating the natural power of the mind, it helps release stress, anxiety, anger, and fatigue, while supporting concentration and memory. By restoring communication between the brain and the body, autogenic training supports overall health, balance and inner stability. Your donation for this event supports the work of our Club.

Zagreb language and culture exchange meetup. Chat in many languages, meet new people and plan adventures together. Hey everyone! 👋 As spring arrives in Zagreb and the city wakes up again, we’re keeping Thursdays social with **Small Friday International Zagreb** ([SFIZ.FUN](https://sites.google.com/view/smallfridayinternationalzagreb/)) a relaxed international meetup where locals, expats, Erasmus students and travellers gather to chat, exchange languages, share stories and plan the next adventure. Think of it as Zagreb’s global living room with lively conversations, and that moment when a random Thursday evening decides to surprise you. ✨ Whether you’ve just arrived in Zagreb, been here a while, or live around the corner, you’re very welcome. 📍 **When & Where** 📍 **The Beertija** Pavla Hatza 16, Zagreb 🕗 **Every other Thursday from 8PM** ✨ Free to join: simply grab a drink and support our host bar 🍺🎸 ✨ Open to everyone: all ages, backgrounds and language levels 💬 **What Happens at [SFIZ.FUN](https://sites.google.com/view/smallfridayinternationalzagreb/)**? Expect a relaxed, social atmosphere where conversations flow naturally. 🗣️ La**nguage Exchange** English, Croatian, Spanish, French, German, Italian, Ukrainian, Russian… and often more. 🌍 **Cultural Exchange** Locals, expats, travellers and Erasmus students sharing stories, experiences and perspectives. 🤝 **New Connections** Real conversations, genuine laughs, and the occasional new friend. 📅 **Weekend Planning** People often end up planning hikes, concerts, trips, festivals or nights out together. No formal structure, no pressure, just people meeting people. 🌸 **Why Join in Spring?** Spring is when Zagreb truly comes alive. Magnolia trees bloom across the city, café terraces fill with conversation, and longer sunny days invite people outdoors. Locals stroll through parks, cycle along the Sava, run around Jarun and Bundek lakes, or escape to the nearby Medvednica mountain for hikes and views above the city. At the same time, Zagreb’s cultural calendar blossoms with exhibitions, concerts, festivals and theatre performances, while markets like Dolac overflow with seasonal produce: asparagus, wild garlic, strawberries and fresh flavours of the season. It’s the perfect time to meet people and explore the city together. And many of those plans begin right here, at [SFIZ.FUN](https://sites.google.com/view/smallfridayinternationalzagreb/). 🌍 🍺 **Why The Beertija?** Because it’s more than a bar, it’s our headquarters. Expect: 🌿 leafy terrace vibes 🎸 rock-inspired atmosphere 🍺 excellent beers 🛋️ relaxed living-room energy 🚭 non-smoking indoor space It’s the kind of place where you pop in for one drink and suddenly realise the evening flew by. 💡 **First-Timer Tip** If it’s your first time: 👋 arrive early 🙂 smile and say hello 💬 jump into a conversation Everyone was new once and that’s how all starts. 🌍 **Join the Crew** [SFIZ.FUN](https://sites.google.com/view/smallfridayinternationalzagreb/) is a community built by the people who show up. So if your Thursday evening could use a little more conversation, laughter and international energy, come by and join us. Bring a friend if you like, or come solo and meet new ones. ✨Ditch the screen, grab a drink, meet the world🌍 See you on Small Friday! 🍻 **SFIZ Crew** P.S. Spread the word https://sites.google.com/view/smallfridayinternationalzagreb 🔎 **How to Spot Us** New here? Best trick is to swing by right at the start, that’s when it’s easiest to find the crew and jump straight in, or ask the bar staff about the event ✨ Need quick updates or can’t see us straight away? No worries, our [WhatsApp group](https://sites.google.com/view/smallfridayinternationalzagreb/faq/sfiz-whatsapp-guide-keeping-it-fun-and-respectful) is where you can ask quick questions. 💖 #ZagrebGlobalMingle 💖

# Gecko & 3Collective Breakfast: Open Space Meetup – HR po vašoj mjeri! 23 travanj 2026 09:00 - 11:30 Business Club 5, Sky Office 14. kat **Zaboravite na klasične panele. Ovaj put, vi postavljate pravila.** Nakon niza uspješnih druženja, odlučili smo prodrmati format! Sljedeći **Gecko Breakfast** pretvaramo u dinamičan **Open Space Meetup**. Što to znači? To znači da nema “govornika u odijelima” i pasivnog slušanja. Vi ste ti koji donose teme o kojima želite pričati, rješavaju konkretne probleme i dijele stvarna iskustva iz HR prakse. ### Slobodno je još samo 20 mjesta! ### [Prijave ](https://geckohrm.com/hr/gecko-breakfast-open-space-meetup/?utm_source=LinkedIn&utm_campaign=Feed&utm_content=Post&utm_medium=LinkedIn_Feed_Post_2026_04_13.)su besplatne i obavezne. ###

Hello Rubyists! This month we're going for something completely different! Well, not really, it's still Ruby related, but it's unlike the other meetups. We'll do a pub style Ruby trivia quiz! A big thank you to [RubyCentral](https://rubycentral.org), in partnership with [GitHub](https://github.com), for making this event possible and for graciously covering the cost of the venue. Their support helps us keep events like this going. After the talks, we'll keep the evening going with the unofficial part of the meetup at the nearby cafe, so stick around for a drink and continue the conversation. See you at BIZkoshnica! \*\*\* **A Ruby Quiz!** by Radan with help from Bruno and Stanko Radan has been testing some AI skills and has spun up a Rails live quiz app just for this occasion. Together with Bruno and Stanko he's preparing weird Ruby questions for the quiz. The app might have been implemented with help from AI but this quiz is for you, no AI assistance allowed! The correct answers will be briefly explained in between questions so you might also learn something.

**Stress** is one of the greatest challenges of modern life. When stress becomes long-lasting, it can quietly turn into anxiety, affecting both mental and physical well-being and increasing the risk of more serious health issues. Through regular **mental hygiene**, we can gently influence our bodies and restore balance. **Autogenic training** is a method that uses focused attention and deep relaxation to reconnect the brain and the body. By activating the natural power of the mind, it helps release stress, anxiety, anger, and fatigue, while supporting concentration and memory. By restoring communication between the brain and the body, autogenic training supports overall health, balance and inner stability. Your donation for this event supports the work of our Club.

Hallo liebe Java User Group Mitglieder! Diesmal haben wir Nils Hartmann mit seinem Talk zum Thema "**[Spring Modulith](https://spring.io/projects/spring-modulith)**" zu Gast. Wir freuen uns euch zu sehen (virtuell oder vor Ort). * 18:00 Uhr: Einlass * 18:30 Uhr: Talk * ab 19:30: Ausklang des Abends Dank an [qSkills](https://qskills.de/) für Location, Bier und Pizza! \-\-\- Oft sollen Anwendungen in entkoppelten Modulen entwickelt werden, um Ordnung und Struktur in unseren Code zu bekommen und darüber Wartbarkeit zu garantieren. Microservices stellen dafür einen sehr konsequenten Ansatz dar, können aber auch eine hohe Komplexität mit sich bringen. “Monolithen” hingen sind vergleichsweise bequem in der Entwicklung, stehen aber im Verdacht, schnell zu einem unübersichtlichen “Big Ball of Mud” zu werden. Diesem Problem versucht “Spring Modulith” entgegenzutreten. Damit werden Spring Boot-Anwendungen in einer gemeinsamen Codebasis entwickelt (”monolithisch”), innerhalb dieser werden aber Module definiert ("modulitisch"), deren korrekte Verwendung anhand von Architekturregeln kontinuierlich überprüft und sichergestellt wird. Außerdem erweitert Spring Modulith das Spring-eigene Eventsystem, um auch zur Laufzeit für eine Entkopplung der Module zu sorgen. In diesem Live-Coding-Vortrag möchte ich anhand praxisnaher Beispiele eine Einführung in Spring Modulith geben und mit euch diskutieren, welche Konsequenzen sich für unsere Anwendungen daraus ergeben und für welche Szenarien dieser Ansatz besonders geeignet ist. \-\-\- Dein Vortrag bei der Java Usergroup Nürnberg! Hast du dich in letzter Zeit in deinem Projekt oder privat mit einem interessanten Thema beschäftigt? Vermutlich ist das nicht nur für dich selbst interessant! Hast du Lust, selber einmal einen Vortrag bei der Java-Usergroup Nürnberg zu halten? Wir sind nicht nur auf Java-Themen fokussiert, sondern beschäftigen uns gern mit und um alles über Software Entwicklung und IT. Wir wollen bei der JUG nicht nur bekannten Speaker\*innen eine Plattform geben und die neuesten State-of-the-Art Technologien vorstellen. Wir freuen uns auch besonders, wenn wir Themen aus unserem technologischen (Arbeits-)alltag Raum geben zu können. Melde dich gerne bei uns, wenn du dazu Lust hast, wir geben wenn gewünscht gerne auch Hilfestellung bei der Vorbereitung!

This workshop will be held in a hybrid format, allowing you to participate either in person or virtually. ‼️ To help us prepare, please ensure you have registered correctly here : https://gdg.community.dev/events/details/google-gdg-krakow-presents-build-with-ai-4-production-ready-ai-agents-hybrid-workshop/ and selected your attendance preference: **In-Person**: Join us on-site at **EPAM HUB Krakow.** **Online:** Join us via the meeting link Please use **personal gmail account** for registration. We will provide **Google Cloud Credits** to generate a **Gemini keys** for use during the workshop. This session is designed for **beginners and intermediate** learners, if you have no experience with these specific technologies it is a great chance to acquire it! Please be prepared to you your personal laptop. **AGENDA** 🎟️ 17:30 - Registration & Networking 🚀 18:00 - Opening & Setup preparations 🎤 18:10 - Çalgan Aygün - Building and Scaling Secure Agents: MCP, ADK and Cloud Run. Part 1. Unlock the potential of the Model Context Protocol (MCP) to provide AI agents with secure, standardized access to your data and tools. This hands-on session guides you through the end-to-end process of building and deploying a production-ready MCP server on Google Cloud Run. You will learn how to implement robust security for your server and then connect it to an intelligent agent using the Agent Development Kit (ADK). By the end of the workshop, you will have a functional, secure agentic workflow running in the cloud. 🍕 19:10 - Break 🎤 19:30 - Çalgan Aygün - Building and Scaling Secure Agents: MCP, ADK and Cloud Run. Part 2. **Speaker's bio:** Çalgan Aygün is a DevOps Lead at FinalCheck, specializing in providing solutions for individual verification. Previously, he worked as a backend and cloud engineer at QuarPay, focusing on modernizing infrastructure and developing faster payment systems. With a background as a software developer at My Security Analytics, his experience extends to analytics software for business, fraud, and government security. **TIME & VENUE** **📅** April 21th, 2026 (Tuesday) **🕙** 5:30 PM – 20:30 PM **📍** Venue: [EPAM HUB,](https://maps.app.goo.gl/6YjYuCbLQ6Wg454u5)1a Fabryczna, **REGISTRATION ❗** Please register on this page (RSVP) If you plan to visit in person please bring your ID with you.

Walk for Children - 2026 Save Soil Walkathon in Columbus 🌍 Over 52% of the world soil is degraded and scientists warn we may have only a few decades of fertile soil left. As Sadhguru shares, soil is a living system—and when it degrades, our food, health, and future are at risk. https://www.youtube.com/watch?v=hyT-6qiubd0 🚶‍♂️🌎This Earth Day, Join the Walk for Children-2026 SaveSoil 5K Walkathon here in Columbus and help raise awareness about soil for the future of our children! Every step you take helps: ✔️ 1. Raise awareness in your communities about protecting and restoring soil. ✔️ 2. Supports sustainable food systems. ✔️ 3. Helps secure our children’s future. 📅 Date: April 26, 2026 📍 Location: Scioto Audubon Metro Park Check-in address 400 W Whittier St, Columbus, OH 43215 ⏰ Time: 8:30 a.m. check-in event starts at 9:30 a.m. 👉 Register here: https://www.eventbrite.com/e/walk-for-children-2026-save-soil-walkathon-in-columbus-registration-1986596534713?aff=oddtdtcreator 👉🏼Free and Open to All. Share this message and bring your neighbours, friends & family along to celebrate our planet! Let’s make it happen!

**\*\*\* We've Moved! Bold Penguin - 6555 Longshore St, Dublin, OH 43017 \*\*\*** Talk by Guy Royse [You've Probably Never Heard of the Reticulum Network](https://sessionize.com/s/guyroyse/youve-probably-never-heard-of-the-reticulum-networ/146919) **AGENDA:** * See updates to parking below * Doors open at 5:30, feel free to come and hang out before! * Official start of the meeting is at 6:30pm * After the meeting is done, we will go hang out at a nearby space in Bridge Park! If you can, please sign up via meetup by noon the day of the meeting so we can have an estimate headcount for food :) We always order extra, so feel free to join us even if you don't get signed up! Thank you to Bold Penguin for providing the food and location! **Parking & Arrival:** **Parking:** Parking in Bridge Park is free. The closest lots are the Mooney Garage and the Hotel/Endres Garage. **Entry:** The doors to the office are to the right of PINS. The street level door and elevators lock at 6pm. If you arrive after that, someone should be there to let you in, else call the number posted. Take the elevator to the 2nd floor. Once you exit the elevator, turn right. \*\*\* We are a bunch of professionals, students, and geeks who are excited about Ruby programming language ([http://ruby-lang.org/](http://ruby-lang.org/)) and Rails framework ([http://rubyonrails.com/](http://rubyonrails.com/)) and the joy they have brought back to web development. Our main goal is to share the love of the Ruby and Rails ecosystems with anyone that is interested. We cater to everyone, whether a non-programmer through advanced Rubyists. * We give lectures on programming topics * We freely provide decades worth of experience * For full details of this month's meeting please visit [http://columbusrb.com](http://columbusrb.com)

The May Ohio North Database Training user group meeting will be held on **May 5th, 2026 at 5:00PM**. This will be a **HYBRID** event and we will be joined in person by **Sam Nasr.** You're welcome to come meet in-person at our meeting location, the offices of Improving at **[6000 Freedom Square Dr,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Unit 110,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Independence, OH 44131](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** [Teams Link ](https://teams.microsoft.com/meet/287759659366576?p=kCaammjECnUCvZzEJv)if anyone needs it after RSVP-ing for in person. If you would like to subscribe to our email list outside of Meetup, we have changed platforms recently and you will need to register [here in Kit ](https://ohio-north-data-training.kit.com/b8f036f615)instead to receive emails. Agenda: **5:00 PM EST**: Online and in-person meeting begins with a social hour. This is an unstructured hour where you can join us to catch up and meet other group members before the session starts. There will be food brought in for in-person attendees. **6:00 PM EST**: Elections, announcements, followed by our feature presentation. See below for presentation details. **7:30 PM EST**: Optionally after the main presentations, the in-person crowd may go out for snacks and drinks at a local establishment. We hope to see you there! Session Abstract ### Data Cleansing using Data Bricks Machine Learning is highly dependent on adequate data. Not only does quantity matter, but more importantly quality. In this session we’ll cover how to build a custom automated process using Data Bricks. This will provide methods for cleaning data in a data lake using functions in Azure. \*Please note, that we will be using Microsoft Teams for the online portion of this meeting. You may want to join a few minutes early to ensure you do not have any issues. If you are attending in person, there are large TVs at the office, and you do not need to bring a laptop or use Teams.

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** GitHub Copilot is powerful, but what if you could scale from a solo AI assistant to an entire team of specialized agents working in parallel? This session introduces Squad: an open-source framework for multi-agent orchestration that lets you define teams of AI agents with specific roles, responsibilities, and expertise. We'll progress from Copilot basics to the Copilot CLI, explore how Agents add autonomy, and see how Instructions and Skills let you customize agent behavior. Then, the climax: a live demo where a Squad team of 3 agents (Lead, Developer, Tester) stands up and builds a working application in real-time, showcasing true multi-agent collaboration. Whether you're new to AI or exploring how to scale your use of Copilot, this session will show you what's possible when agents work as a team. **YouTube Link** TBD

**Talk Description** Coming soon **Agenda:** 7:00pm - Opening announcements 7:10pm - Main Topic 7:50pm - Q&A

5th annual Earth Day Celebration! This year (2026) the Celebration is scheduled for April 25th with activities running from 10am-2pm. This is a non-ticketed event. Everyone is welcome! We will have food trucks, Birds of Prey, kids crafts, live music, raspberry plants, apple trees, and of course NATIVE PLANTS! Where: Lynd Fruit Farm, 9399 Morse Rd, Pataskala Ohio 43062 Time: Activities will be from 10am- 2pm. The Market will remain open until 5pm.