Computers

Title: Frontrunners, the Mid-Atlantic's AI conference! You're invited to the Frontrunners AI conference, March 27th, in Arlington, VA at GMU's Van Metre Hall. Frontrunners will be a single day tech conference this year featuring AI and data topics. You can read all about Frontrunners here: [Frontrunners](https://frontrunners.tech/) If you want to speak at Frontrunners, submit your talk here: https://docs.google.com/forms/d/e/1FAIpQLSedNNa4N64vgfsvAtGcBngKJrtd3h1_x0T019GTW-rSwCj0jQ/viewform This is a paid event, so you will have to register at the Frontrunners AI site or at the direct registration link is as follows (but please also RSVP on this meetup to help us reach others): https://frontrunners.ticketspice.com/frontrunners-2026 Thanks. We hope to see you there.

Treat your children to GALita’s ***Séneca, ratón de biblioteca (Séneca, The Library Mouse)***, a bilingual play by Chilean playwright Jorge Díaz with original music by Iván Navas. Directed by Elena Velasco, this fun-filled play touches on the importance of reading and respecting differences, and runs March 14 through March 28, 2026. When a brainy library mouse meets a swaggering crew of street mice, sparks fly and stories take off—spilling from the shelves into a world of comic chases and big laughs. Along the way, unlikely friendships form and lessons unfold about listening, learning, and belonging. Brought to life through imaginative puppets and original music, ***Séneca, The Library Mouse*** invites young audiences to celebrate difference, delight in the joy of books, and discover confidence and pride in who they are—proving that brains, creativity, and curiosity can be just as powerful as bravado. **PERFORMANCES:** Weekdays from March 16-20 and March 23-27 at 10:30 am, and Saturday, March 14, 21, and 28 at 3 pm. This family show is about 60 minutes long and suitable for ages 5 and up! **TICKETS:** General admission tickets are $10 children and $12 adults. **[GET TICKETS HERE](https://ci.ovationtix.com/35923/production/1245619)** **CAST:** Daniela Lock as Séneca, Delbis Cardona as Rafael, Ramón, and Raúl, Máximo Cáceres as Benigno (Dog), Rachael Small as Bellaco (Cat), and H. Christian Aguilar as Ensemble/Understudy. **CREATIVE TEAM:** Scenic Design is by Gisela Estrada with Lighting Design by Luis García, and Costume Design by Rukiya Henry-Fields. Iván Navas is Composer, Angélica Huertas is Sound Designer, and Properties Design is by Isabel deCarvalho. Solis Pettitt is Stage Manager and Sherry González is Assistant Stage Manager. Ilyana Rose-Dávila is Production Manager, and Anson Stevie is Technical Director.

SUMMARY: The DEF CON Group 443, also known as DC443, is an interest group designed to discuss general hacking and its culture, information security (InfoSec), and related topics. Our group’s interests include InfoSec, SDR, Hackathons, Speaker Events (MiniCons), Capture The Flags (CTFs), Binary Reversing/Exploitation, Ham Radio, Lock Picking, Micro Electronics, Web Development, etc. We plan to meet every other week on Fridays at Unallocated space. Meetings can include Talks, projects, trivia nights, workshops, or contests and CTFs. Website: [https://dc443.org](https://dc443.org/) Twitter: [https://twitter.com/dc443_](https://twitter.com/dc443_) GOAL: Learn about new and existing interests and grow the Unallocated Space community. THINGS TO BRING: Yourself and friends SKILL LEVEL: Any PRESENTER: Adam (Digital Tinker)

# The Power of the Subconscious Mind **THE POWER OF THE SUBCONSCIOUS OVER YOU** You are welcome to arrive 15 minutes early for refreshments! At the lecture "The Power of the Subconscious", the speaker will clearly and understandably explain topics such as: What is the exact definition of the Subconscious Mind? How does it inflict unwanted feelings and anxiety in you? What determines how much pressure it exerts on a person? What exactly is the goal of the subconscious? This is not just a lecture where you sit quietly and listen. It's interactive and LIVE, so you can ask questions at any time. And the most important topic: **HOW DO YOU TAKE CONTROL OF YOUR SUBCOUNSCIOUS?** **Attend and find out.** This group is sponsored by the Dianetics Life Improvement Center

Come celebrate the golden anniversary of the showcase transit of Washington, the Metrorail! We'll be traveling back and forth over the original stretch of the Red line that opened on March 27, 1976, distributing [t-shirts](https://transitenthusiastsdc.wordpress.com/wp-content/uploads/2026/01/t-shirt-order-form.pdf), balloons and stickers. Once we've spread our cheer, we'll retire to the Metro Bar just outside the Rhode Island Avenue station to reminisce and celebrate more. Join us! **NOTE**: Our "official" celebration begins at 4:30. We may add a noontime celebration if there is enough interest. Please email me at williamrice63@gmail.com if you'd like to participate in the earlier event. **ALSO NOTE**: WMATA has of this writing not yet announced what it is doing to celebrate. We will monitor its communications and keep you updated if we adjust our activities to accommodate the agency's plans.

Hello! Join us for our monthly luncheon held on the **4th Friday of the month** in place of Center Aging: Friday Tea Time. We direct you to check out [https://thedccenter.org/aging/](https://thedccenter.org/aging/) for RSVP information and to possibly answer any questions you may have about the upcoming event. We hope to see you there!

We are looking for volunteers to help support our community art workshops. Please sign up!

[Profs and Pints Northern Virginia](https://www.profsandpints.com/washingtondc) presents: **“Digital Device Detox,”** a guide to breaking free from the addictive and destructive powers of social media and apps, with Jillian Tucker, licensed clinical social worker in private practice, adjunct professor of clinical social work at Columbia University and New York University, and therapist with nearly 15 years of experience in addiction treatment and behavioral change. [Advance tickets: $13.50 plus sales tax and processing fees. Available at [https://events.ticketleap.com/tickets/profsandpints/northern-virginia-digital-detox](https://events.ticketleap.com/tickets/profsandpints/northern-virginia-digital-detox) .] Many of us have had the same experience: We’re trying to get things done and stay focused on the positive in our lives, but we can’t stop looking at a cell phone that tells us that we live in troubled times, that everyone else is better looking and having more fun, and that escape awaits in the worlds of Candy Crush or Pokémon Go. Maybe it’s time to find effective ways to loosen the grip of that cell phone and rediscover the happiness that comes with using digital devices less. Join Jillian Tucker, who previously has given several excellent Profs and Pints talks related to mental health, for a crash course on how to restore balance in your relationship with digital devices to ensure they’re simply tools you use rather than instruments through which other people use you. She’ll start by discussing social and mental-health trends connected to the use of digital devices. We’ll delve into the specific ways that their overuse can be biologically and psychologically harmful and leads to division, depression, anxiety and anguish on an individual and societal level. Professor Tucker also will look at why digital habits are hard to break, citing neuroscience and what we know about behavioral addiction. You’ll learn the many ways in which devices and apps are deliberately designed to be hard to stop using. You won’t be urged to just chuck your cell phone, though. After all, such devices can keep you socially connected, be sources of joy and learning, and even save your life if you need to summon help in an emergency. Instead, we’ll look at effective strategies for reducing digital device use, considering approaches that treat the overuse of such devices as “addiction” but moving beyond them to consider more nuanced ones as well. We’ll explore how to find our core motivation to change and how to carry out a change plan. We’ll consider how those who failed in past attempts to reduce digital-device use can overcome impasses in their effort to change their behavior. We’ll discuss ways to minimize the feelings of inconvenience and withdrawal that might come with reducing digital-device use, and we’ll discuss strategies for regaining the social skills and reviving the in-person strategies that our device use had compromised. You’ll learn how the same conditioning and power of habit that got us using our devices so much more also can be harnessed to help us use them much less. You’ll learn how to curate and enhance the positive aspects of digital devices, to help maintain them as a source of connection, joy, humor and learning and keep them from causing you unhappiness or stress. (Doors: $17, or $15 with a student ID. Listed time is for doors. Talk starts 30 minutes later.) Image: Photo by Japanexperterna (Creative Commons).

Come out to Bub and Pop's in NoMA for great standup and food/drink! We've got an awesome lineup to keep you laughing! This is a ticketed event, and tickets are available via Eventbrite (see link below) snag em' while you can! [Tickets Here!](https://www.eventbrite.com/e/standup-and-sandwiches-the-return-of-hot-beef-tickets-1984251503662?aff=oddtdtcreator&keep_tld=true) Don't miss out on this incredible opportunity to experience the **DMV's finest comedic talent**! Comedians have performed on TV, the DC Improv, the DC Comedy Loft, Arlington Cinema and Drafthouse, and many more clubs and venues! So grab your friends, reserve your seats, and get ready for a night of non-stop laughter, great food and awesome drinks! We can't wait to see you there! This event is produced by Callback Comedy

Lets meet up at Ledos, bring comic book stuff and your appetite.

We'll check out Shaghf Cafe in Fairfax. There is a retail parking around the block and behind the building. Please have a picture profile so we can recognize you in the meetup. Please only sign up if you're sure about attending this meetup, and please update your RSVP as soon as possible if you need to cancel, thank you!

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/azure-cbus-2026/

**First meetup of the Columbus AI Engineering group.** We’ll kick things off with a practical, beginner-friendly discussion on: **How LLMs like ChatGPT actually work — and how to build real applications with them.** We’ll cover: * what’s actually happening under the hood (at a high level) * why LLMs behave the way they do (hallucinations, prompt sensitivity, etc.) * how people are building real systems with them today * where things break in practice This will be a **short, informal talk (\~15–20 min)** followed by open discussion and Q&A. Whether you’re an engineer, builder, or just curious about how modern AI systems work, you’re welcome to join. No slides, no fluff — just real conversation about real systems. We’ll hang out afterward and get to know each other.

**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: Type Annotations with John Cassidy 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

**Complex Trauma Support Group** Our group is intended for survivors of complex trauma. If you are here, it’s likely that so much of who you are and what you have experienced in this life is actually invisible to most people––to family, society, coworkers, and the people who are around you. We are a peer-led group of survivors creating opportunities for ourselves and others to share our experiences, share support, and build relationships in kind community together. Survivor experiences might include: child sexual abuse, incest, child trafficking, and other experiences of people living with traumatic dissociation and complex PTSD. **What to expect at your first meeting:** Currently, we are offering a bi-monthly in person group at 2:00pm on the first and third Sunday of the month. The only criterion for joining the group is that you are a survivor of trauma wishing to have more kindness in your own life and share kindness with others, and that you agree to practice to group’s relational agreements available for view here: https://www.kindgroups.com/agreements. Joining the group is free of charge. We ask that new people connect with us for 30 minutes on the phone or on zoom before coming to their first group, so that we can determine together that we are a good fit. Our meetings last approximately 90 minutes. Participants are never required to share. You’re also welcome to choose a pseudonym and you will never be asked for private information. You are welcome to leave at any time. The kindness that survivors can share when among others who have survived similar childhood experiences is something we rarely get to experience. Time spent with others who understand even a little bit more about us is a relief. Our hope is to help ourselves and others experience that we are not alone. We wish for our efforts to be a cause of kindness in our own lives and the lives of each other. You can read more about the groups at www.kindgroups.com.

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).

We connect you with up to 30 Men or Women tennis partners close to your PLAYING REGION and skill level. This program is less competitive, no champions crowned, no league standings just dedicated tennis partners who want to meet up with you on the courts. Players will meet up to play a tennis match or just to hit around. Just go through the [Join Page](https://www.tenniscolumbus.com/partner-program) to enter this program. [https://www.tenniscolumbus.com/partner-program](https://www.tenniscolumbus.com/partner-program)

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.