Decentralized Systems & Applications

Ukulele Club is a fun group for all ages and skill levels! There is no teacher, but we all help teach each other. Think of songs you would like to learn, and we can learn them together. If you don't have an ukulele, we have extra ukuleles When: *almost* Every Saturday, 10am-11:30am Admission: food/drink order

\ ストーリーハウスの言語交換会を再開します。 日本語または英語の上達を目指して、ぜひチャレンジしてみてください！ポジティブな気持ちで参加して、お互いに励まし合いながら、集中して成​​長しましょう。言語交換会は、日本語と英語の半分ずつに分けて行います。他の言語を開催できる場合は、時間を追加します。 使いたい教材があればご持参ください。また、必要に応じてメモが取れるように、ノートも必ずご持参ください。気軽におしゃべりしたり、会話に参加したりしてください。 参加費は無料ですが、カフェでご注文をお願いいたします。 We are reintroducing our Storyhouse Language Exchange. Push yourself to improve Japanese or English! Come with a positive attitude, and encourage each other to focus and grow. We will split the language exchange into half, between Japanese and English. If additional languages are available, we will add time. Bring any study materials you want to use. And be sure to bring writing utensils so you can take notes as you need. Feel free to talk and participate in conversations. There is no participation fee, but please make your order at the cafe.

89th Regular Meeting of Ibaraki Toastmasters Club will be held on from 10.00 to 12.00 (Online). You can join the meeting by online. The meeting will be held based on the way of traditional Toastmasters club meeting. It consists of Table Topic Session, Workshop,Prepared Speech session and Evaluation session in English as follows. 9.30 Call to Order 9.32 Guest Introduction 9.45Table Topic Session 10.00 Intermission 10.15Workshop 10.30Prepared Speech Session 11.10 Evaluation Session 11.20 Award Session 11.30 Adjouen The meeting is full of international atmosphere. Members cosist of American, Philippino, and Japanese. The meeting will be held (Hybrid ) . We will give the information of URL to those who register the participation in the event.

イングリッシュHang outやってます！ イングリッシュハングアウトとは、簡単にいうと「英語でおしゃべりする会」です！ Hangoutとは、日本語で”(友達と)遊ぶ”という意味で、おしゃべりとかゲームをしながら室内でリラックスしながら過ごす感じです。 それをカフェで英語でハングアウトしましょう！という時間です。 どなたでも、予約なしで参加していただけます。途中参加退席自由です。カフェでのオーダーをお願いします。 英語の練習をしたいけど、英会話教室に行くほどではないけど気軽にしゃべる機会を探している人や、英語で話せる友達を探している人にぴったりです。 We are hosting a casual English hangout time for locals to connect with international travelers & our international staff. Anyone can join. Even if your English level is very low, you can still listen and learn. The conversations are open, and you may join or leave at any time. Please make one order from the cafe.

## **Columbus Bitcoin Meetup – Event** Join us for another great evening dedicated to Bitcoin, learning, and community. We will be gathering in the private room at Olentangy Brewery for an evening of conversation, education, and fellowship with fellow Bitcoiners. This special event will feature three guest speakers sharing insights from across the Bitcoin ecosystem. ### **Guest Speakers** **Lindsay Faust** Relationship Manager at River **Andrew Tilmann** CEO of the Midwest Bitcoin Summit **Carlos Estrada** Founder of Coin Vigilante In addition to speaking during the event, Andrew Tilmann will also be available for a meet and greet. This will be a great opportunity to ask questions about the upcoming Midwest Bitcoin Summit, taking place September 23 and 24 at the Columbus Convention Center. ### **Midwest Bitcoin Summit Discount** Early Bird pricing ends **April 1st**, but you can still save **21%** by using the promo code: **COLUMBUS** Use the link below to apply the discount: [https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus](https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus) ### **Event Details** This will be a three hour event, with speakers beginning just before 7:00 PM. There will be plenty of time afterward for networking, meeting new friends, and continuing the conversation. Food will be provided. We look forward to seeing you there! ***

Central Ohio Radio Enthusiasts—CORE—is an informal community for anyone enthusiastic or curious about radio—whether you're new to radio and want to learn or you've been tinkering for years and want to share. Ham radio operators, GMRS users, Meshtastic fans, software-defined radio nerds, makers, and technical and non-technical folks are all welcome. No experience required or expected. This month we have **WiFi HaLow: Introduction and Practical Use** with **Alex Barbur**. Details are are [core.radio](https://core.radio).

Pay attention! We’re delaying a week for those of you who may be on Spring break and/or celebrating the holiday. Ok, no pancakes, but waffles-a-plenty. Join the local UX and Digital Design community for a casual monthly breakfast. Look for us upstairs!

In this local meeting, you will discover knowledge that you can use to get over the past. The key to improving your personal motivation, self-confidence, and happiness is to get over your painful memories. When you become free of your past, you will be free from stress, anger, anxiety and depression. Studies show that negative emotions can affect your health. By being free of negative emotions, believe it or not, you will most likely even look younger, feel more energetic, and become healthier! Be sure to click on the red "Attend" button below to come to this local event. We look forward to seeing you there. This group is brought to you by the Dianetics and Scientology life improvement center.

The global Azure community is coming together again, and Columbus is officially on the map. View the session lineup and speakers at [Global Azure Columbus 2026](https://coazure.github.io/cbus-global-azure-2026/) On **Saturday, April 18, 2026**, the Azure Columbus Meetup, DevOps Meetup, and Code and Coffee Meetup are hosting our local edition of Global Azure 2026. This is a free, community-driven event packed with learning, networking, and all things Microsoft Azure. Whether you’re building modern cloud-native apps, experimenting with AI agents, deploying containers, automating infrastructure, or just beginning your Azure journey, this event is for you! **What to Expect** * Engaging technical sessions * Real-world Azure architecture & cloud-native patterns * AI, agents, automation, and modern DevOps * Food and drinks (because learning burns calories) * Time to connect with fellow engineers, architects, and cloud enthusiasts **Who Should Attend?** * Software engineers (any language, any stack) * Cloud architects * DevOps engineers * Data professionals * AI explorers * Platform builders * Anyone who loves solving hard problems with great tools If you build, deploy, automate, scale, monitor, or optimize in Azure, you’ll feel right at home. **Why Global Azure?** Global Azure is a worldwide community event where Azure user groups host learning sessions on the same day across the globe. It’s grassroots. It’s technical. It’s practical. And it’s powered by people who genuinely love sharing what they’ve learned. And yes, it’s free to attend!

The Fellowship of the Star Schema: Transforming OLTP Data for Power BI One does not simply build reports on OLTP data. Join us on an epic journey from the depths of raw, normalized tables to the shining halls of a well-modeled star schema fit for Power BI greatness. We will demystify the differences between OLTP and OLAP, walk through star schema vs snowflake (and why Power BI has a clear favorite), and show you the compression differences between normalized and columnar storage that will make you never look at an OLTP model the same way again. We will cover the different types of dimensions, when to use them, and how to handle Slowly Changing Dimensions without losing your mind. You will leave knowing exactly how to identify a bad model, how to convert OLTP data into a clean star schema, and how to forge relationships that rule them all. Whether you are a data wizard, a curious hobbit, or somewhere in between, your models will never be the same.