What is Qt?

***Join us for an evening in an electronics lab where we will attempt to run clean scans of gold samples, and then clean up that data with post processing.*** This is a high sensitivity experiment, and we do not plan on being successful so early. But we've had promising results lately - so we will be putting in the time. We are NOT meeting at our usual location, but rather at Steve's house/lab. If you RSVP, you will get a DM with the address but it's located in Silver Spring. We will attempt full, clean lab - clean tip repeated scanning tests to see what we can learn and improve. We will experiment with online attendees, but if all possible showing up in person is strongly encouraged. Online join link is: - [https://meet.jit.si/mocomakers](https://meet.jit.si/mocomakers) Our community is building (and documenting for other teams) how to build a scanning tunneling microscope using a mix of common and 3D printed parts. This will allow us to scan and visualize a single atom - an ambitious we are doing over the course of a few months. The MoCo Makers community is one of the most innovative and competent groups in Maryland, and we've done everything from [publishing cancer research](https://pubmed.ncbi.nlm.nih.gov/38136356/), to [launching products](https://www.kickstarter.com/projects/gotim/cozy-curvy-multi-contour-pillow), [winning grants](https://covidinfocommons.datascience.columbia.edu/awards/2014255), and inspiring thousands. Now our biggest challenge yet has appeared. We are building a Scanning Tunneling Microscope, that will allow us to scan and visualize single atoms. To get a better idea of what we are doing, see our reference project here: [https://www.youtube.com/watch?v=7N3OqTEq08g](https://www.youtube.com/watch?v=7N3OqTEq08g) All starting CAD, code, and reference files should exist. However, let's be the first Maker community to document the build process and share it with learners around the world. We will be publishing our work here -[ https://hackaday.io/project/202816-qt-panda](https://hackaday.io/project/202816-qt-panda) If you need a ride, let us know.

Bring a friend, bring family, and bring that neighbor that you kinda know... Come one, come all for some free table tennis. Note: Because we have been playing regularly for years, members tend not to RSVP. If there are any questions, feel free to message.

**Pre-Registration is REQUIRED. RSVP here - [https://luma.com/6twkovvg](https://luma.com/6twkovvg)** ## ODSC AI x Snowflake Present: AI Innovation in the Capital **Our premier Washington D.C. AI Meetup of March 2026!** Skip the usual AI hype and join us in the District for an evening of technical deep dives and high-level networking. We’re bringing together **D.C. builders, data scientists, and engineers** to discuss how to bridge the gap between AI experimentation and enterprise-grade deployment. Come for the networking, stay for the expert insights from the Snowflake team, and leave with a sharper strategy for scaling AI in 2026. ## The Session **Topic: Engineering the Future of Enterprise AI (Title TBA)** *Official topic and abstract coming soon!* While the specific title is under wraps, **Matt Harris** typically explores the intersection of high-performance data architecture and generative AI. Expect a session focused on how organizations can leverage Snowflake’s evolving ecosystem to build secure, scalable, and governed AI applications that go beyond the chat box and into core business logic. **Speaker:** Matt Harris, Principal AI Strategy Architect (FSI at Snowflake [https://www.linkedin.com/in/matthew-d-harris/](https://www.linkedin.com/in/matthew-d-harris/) Matt is a veteran in the data space, serving as a Principal Solutions Engineer at Snowflake. He specializes in helping complex organizations transform their data architecture into a competitive advantage. With deep expertise in the Snowflake Data Cloud, Matt focuses on making advanced data science and AI accessible, governed, and ready for production environments. ## Why Attend? * **Network with the Best:** Connect with AI practitioners and data leaders in the D.C. tech and public sector ecosystem. * **High-End Experience:** Enjoy bites and refreshments in a professional, collaborative environment. * **Exclusive Insights:** Get a direct line to Snowflake’s technical leadership on where enterprise AI is headed next. ## Agenda * **6:00 PM – 6:30 PM:** Networking & Bites/Drinks * **6:30 PM – 7:15 PM:** Presentation by Matt Harris, Principal Solutions Engineer at Snowflake * **7:15 PM – 7:30 PM:** Interactive Q&A * **7:30 PM – 8:00 PM:** Networking & Closing **Venue:** Mindspace, 1301 K Street Northwest, Washington, DC 20005 **RSVP now to secure your spot!** ## Useful Links * **Free access to more talks/trainings:** [Ai+ Training platform](https://aiplus.training/) * **ODSC Blog:** [https://opendatascience.com/](https://opendatascience.com/) * **Join the Community:** [Slack Channel](https://www.google.com/search?q=https://odsc.ai/slack) * **Code of Conduct:** [https://odsc.ai/code-of-conduct/](https://odsc.ai/code-of-conduct/)

Join us for our Thursday Tea Time and social hour for older LGBTQ+ adults! Bring your beverage of choice, and meet in-person at The DC Center from 1:00 – 3:00 pm. For more information, contact Center Aging Program Coordinator, Mac (maca@thedccenter.org). We hope to see you there!

Competition Night - OPEN – **THIS IS AN IN PERSON EVENT!!** Ed is past President of the Gaithersburg Camera Club and has served in several Board positions. He is a member of the Maryland Federation of Art, Nature First, Photographic Society of America and is a Maryland Photography Alliance (MPA) Certified Judge. He has developed and taught numerous photography classes at Montgomery College and workshops for individuals and clients of Mac Business Solutions and Capital Photography. He is currently chair of the MPA Judge Committee and is responsible for new judge training and continuing education for the MPA judges. Ed’s photographic journey has taken him into exploring what Life is and wondering how it all connects. Ed’s images have appeared and placed in national juried shows that include the Circle Gallery in Annapolis, Photoworks at Glen Echo, Washington Art Works, Delaplaine Arts Center and the Allegany Arts Council. He is a Gaithersburg Camera Club Grand Master and his images have been used for online and print publications. This is an IN PERSON EVENT!! *** The rules for competition and how to submit images can be found on the Silver Spring Camera Club website. (http://www.ssccphotography.org/official-competition-rules-and-awards/) Competition topic definitions can be found on the Silver Spring Camera Club website. https://www.ssccphotography.org/ *** About the Silver Spring Camera Club: We meet the first three Thursdays of every month, September – May, and one day on a weekend for a field trip to an interesting photogenic location in the area. More information about the Silver Spring Camera Club can be found on our website (http://www.ssccphotography.org/) regarding speakers, competitions, field trips, our monthly "A Closer Focus" forums, and a link to our award winning newsletter the "Cable Release". Visitors to the Club are always welcome to attend meetings, and we hope to see you soon! Membership is a very reasonable $50 for individual members, $80 for family and only $35 for students. Please see the link to our membership application, below, for available discounts. https://www.ssccphotography.org/online-membership-form/ Why become a member of the Silver Spring Camera Club? We are a diverse group of photographers who love field trips, competitions, opportunities to see the world captured by other people's viewpoints, and sharing our knowledge, experience and love of photography. Membership in the club gives you the opportunity to enter your photos in our monthly competitions, to receive our award-winning monthly newsletter the Cable Release, join our field trips without paying the $10 non-member fee, and more! Visit us on the web: http://www.ssccphotography.org/

**Schedule** 5:00 pm - 5:30 pm - Sign-in/Meet and greet/networking 5:30 pm - 7:00 pm - Break the Cloud Lock-in: Building Adaptive Intelligence Orchestration with DIO 7:00 pm - 7:45 pm - Leaning on the SQL: Crafting Resilient Data Layers **Talk and Speaker Details** **Time**: 5:30 pm est. **Title**: Break the Cloud Lock-in: Building Adaptive Intelligence Orchestration with DIO **Summary**: AIaas are often stuck in a binary choice: pay the "token tax" for convenient Cloud APIs or manage the complexity of local open-source models (Llama/Mistral) yourself. The future belongs to a hybrid architecture—but the routing logic shouldn't be spaghetti code. In this session, we introduce DIO (Distributed Intelligence Orchestration), a new open-source framework designed to bridge on-premise infrastructure and cloud capabilities. We will move beyond theory and look at the code behind the Federated Decision Engine (FDE)—the algorithm that allows you to dynamically route prompts based on privacy, cost, complexity, and more. **Session Takeaways:** \- The DIO Architecture: A technical deep dive into the open\-source framework that decouples your application from specific model providers\. \- Live Integration: How to implement the DIO SDK to build a "Smart Router" that connects the best of both world for Cloud & On Prem Intelligence\. **Speaker**: Snow Zhao **Speaker Bio**: Founder & CEO of AIgentic \| Ex\-Meta engineering leader\. Building the future of professional services with precision & trust\. Snow has decades of Silicon Valley experience building and scaling technology organizations at Facebook, Block (Cash App), and Groupon. She is currently building at AIgentic, an applied AI company designing robust, trustworthy AI systems for professional industries. She leads global teams that delivered secure, high-performance systems used by billions, from product infrastructure behind Messenger’s rewrite and end-to-end encryption, to architecting enterprise AI platforms that bridge traditional sectors with digital transformation. Her work has spanned mobile, security, open-source, federated architecture, AI-powered automation, cross-platform software ecosystems, and more — always guided by the principle that engineering excellence is a human discipline as much as a technical one. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Time**: 7:00 pm est. **Title**: Leaning on the SQL: Crafting Resilient Data Layers **Summary**: Most apps need to persist data. The mechanisms for persisting vary, from key-value pairs to relational databases to files and more. SQLite is the de-facto standard for persistence in mobile apps: it ships with every Android and iOS app. This session looks into best practices for SQLite data persistence, drawing from practical, digestible, real world examples. We look into when one should lean on the SQL versus when to perform data manipulation in application code. We look at some examples of constraints that you might have written in Kotlin/Swift, and how expressing them in SQL instead can offer data consistency and integrity benefits. A major focus of the session is on migrations. Data schemas inevitably evolve, and executing migrations carefully is essential, as mistakes can have severe consequences, including data corruption. We look into best practices for migration, including when to do migration in application code versus in SQL. We also examine some real world migration examples beyond the simple case of adding a column with a default value. Finally we look at migrations that cross data sources. This could occur if for example you were persisting data in a key-value store but you now want to migrate that to a database table. This must be done in application code but can you still take advantage of database migrations? Can you cover your migration code with unit tests? **Speaker**: Kiran Raon **Speaker Bio**: Two decades as a developer, got into Android in 2010. Adopted Kotlin in 2017, had my first attempt at KMP in 2019 (when it was still called KMM). Worked on and off with iOS and web client technologies throughout my career, also dabbled in other cross platform technologies. Full-fledged Mobile developer since 2023. **How to find us:** 1680 Capital One Drive, McLean, VA 22102 We'll be located in C2 **100 D/E**. The area is publicly accessible. If you can't find it, you can ask the front desk for directions to the **C2 100 D/E** **Attending Virtually?** [https://us06web.zoom.us/j/84418455380?pwd=fJczZgKv2BaGVPLi7azEr3XAJMPvBR.1](https://www.google.com/url?q=https://us06web.zoom.us/j/84418455380?pwd%3DfJczZgKv2BaGVPLi7azEr3XAJMPvBR.1&sa=D&source=calendar&usd=2&usg=AOvVaw2giIJenXoEsPXfYgNs_atJ) Meeting ID: 844 1845 5380 Passcode: 369382 **Parking**: You can park at 1680 Capital One Drive; this garage has a sign indicating public parking. Or at the WEGMANS parking lot.

ASL HangOut is a safe fun social All levels D/deaf, Hard of Hearing, Hearing signers, ASL students, ASL interpreter. Hosted by Daniel Berke and his friends Jeremy, Andrew, Nathaniel. and Josh There's always a great mix of people and good conversations We will be meeting at the Tysons Corner Food Court (3rd Floor), Thursday at 7pm! Hope to see you all there! 🙂 Look for a table of ASL signers...don't be shy. 1961 Chain Bridge Rd Tysons Corner, VA 22102 join our Facebook group https://www.facebook.com/groups/468631322134694

*A series of pop-up arcades of locally-made games!* The Washington, D.C. Chapter of the International Game Developers Association (IGDA DC) has partnered with the D.C. Public Library to host a series of showcases at library branches across the city. **At these showcases you can come play games made by local developers and learn about how those games were made!** Saturday, March 14, 2026 2-5pm Lamond-Riggs/Lillian J. Huff Neighborhood Library 5401 South Dakota Ave NE, Washington, DC 20011 (Near the Fort Totten Metro Station) Family-friendly and appropriate for all ages (recommended for children ages 7 and up mainly because video game controllers are hard for younger children to use.) Come out and support your local community of game developers!

Every year MoCo Makers is proud to partner with the DMV Petri Dish to celebrate Pi Day, 3/14, which is a celebration of the mathematical "transcendental number" pi - 3.14159.... Pi day is also a great excuse to be social and eat Pie! This event is open to all backgrounds, even if this is your first event! We are meeting at the 7 Locks Brewery, and they kindly let us bring our own food. No worries if you don't drink alcoholic drinks, all are welcome. Bringing your own food is encouraged but not required. If you are planning to bring something, please enter your name, item name, and quantity in the spreadsheet below: https://docs.google.com/spreadsheets/d/1ldQxYBECyxwTeX_woLhbQZlj0EkAyB5qrc-Q16hBOn0/edit?usp=drivesdk There will be a countdown leading up to 1:59 pm, complete with disco ball drop. 🪩 Dr. Cheryl Lohman is sponsoring an assortment of chef-crafted savory-style pies, and they come well reviewed (just ask past attendees). Join us for some good times, and tasty eats!

We’ll do a circuit hike of 15.5 or 21.7 miles (you choose) along two of the prettiest Maryland suburban-DC stream valleys—**Northwest Branch** and **Sligo Creek**. The short version of the hike is difficult and the long version is difficult-er. We will proceed as a group for the first seven miles of both hikes, after which, you may hike at your own pace. This unusual, suburban wilderness hike will take you over natural-surface and paved trails, as well as a few stretches of sidewalk. The hike even includes some rock scrambling and sandy beaches, all with gentle elevation changes. Mud and/or ice on the trails have been known to occur. **[Photo albums](https://sites.google.com/view/wandering-soles/one-day-hike/training-hikes/nw-branchsligo-creek)** of previous versions of this hike. **MAPS & ROUTE NOTES:** See this **[folder](https://drive.google.com/drive/folders/13eoxioeq8uOAtpDM_TXJUqo2stk666pw?usp=sharing)** for hike handouts that include directions, route notes & maps, GPX files, and area information. You should download or print these, especially if you are unfamiliar with the routes. There are also Google Maps for the **[short](https://www.google.com/maps/d/edit?mid=15lpfn2zbNWAbn0xta7q6K09xcIJBnC13&usp=share_link)** and the **[long](https://www.google.com/maps/d/edit?mid=18SCpVfB2yLTiN9cJfqCgc4RH6E8ZNih-&usp=share_link)** hikes, to follow along on your phone's Google Maps app as you're walking. **WHEN & WHERE:** We’ll meet 8:30 AM at Wheaton Regional Park, in the parking lot in the lobby of the **[Ice Arena](https://bit.ly/4kvcRrB)**. Note that the park entrance for this location is at Orebaugh Avenue, off Arcola Avenue. Contact Mike (Mike.Darzi@Gmail.com) for a pick-up at a nearby Metro station. **WHAT TO BRING:** Bring food and drink (short hike, 2 qts; long hike, 3 qts); short hikers may also buy food along the way. You’ll proceed at your own pace and you may stop (or not) anytime to eat. This hike occurs rain or shine, cold or warm, so dress appropriately. However, in case of hazardous weather, please check here for last-minute changes before leaving for the hike. **LEADERS:** Mike Darzi (Mike.Darzi@Gmail.com) & Sean McCartney (SeanEMcCartney@Gmail.com) **SIERRA CLUB** You may join the Sierra Club by clicking the "JOIN" button at the top of the Virginia Chapter’s **[website](http://www.sierraclub.org/virginia)**. Membership is not required for participation. **ONE DAY HIKE** Although open to all, this training hike is part of a series of Saturday training hikes leading up to the **[One Day Hike](https://www.meetup.com/sierrapotomac/events/312467688/)** (ODH)—100 or 50 km along the C&O Canal—on May 2, 2026. See SCPRO’s **[Meetup page](https://www.meetup.com/sierrapotomac/)** for other training hikes as they are posted. If you would like to support the ODH, see **[volunteering opportunities](https://www.meetup.com/sierrapotomac/events/312467618/)** and/or contact Mike Darzi (Mike.Darzi@Gmail.com). For official updates regarding training hikes, registration, and other information, join the ODH discussion group by sending a blank email to OneDayHike+Subscribe@Groups.io

**大家好**！Let's get together and have a casual chat for all levels of Chinese from beginner to native speakers. 大家都欢迎参加我们的聚会！ Please join us on **Sunday, March 15, 2026** at **10 AM** at The Roost on Capitol Hill located at **1401 Pennsylvania Ave SE, Washington, DC 20003**. The Roost is a 2-minute walk from the Potomac Avenue Metro Station (Blue / Orange / Silver). If you live nearby, you can reach this destination by bicycle in 5-10 minutes. The neighborhood near The Roost has free two-hour street parking. **We will meet in the seating area located behind the bar called "Show of Hands"** (it is located to your left when you enter through the front doors). Table signs will be placed on the tables so that you can easily find us. We encourage you to order coffee or brunch while you enjoy chit chatting with other Chinese speakers and learners. Coffee or brunch can be ordered by using the QR code on the table, and a server will conveniently bring your order to you. **SAVE THE DATE!** Below are the expected dates in 2026, but additional dates may also be scheduled: April 12, 2026 May 10, 2026 (Mother's Day) June 14, 2026 July 5, 2026 August 9, 2026 September 13, 2026 October 18, 2026 November 8, 2026 December 6, 2026

The Runstr District 5K is a charity race with a twist. Your finish decides which cause wins. Pick a team. Run your best. The charity with the most runners in the top 100 takes home $500. 🎟️ Tickets: [https://runsignup.com/Race/DC/Washington/Runstr5k](https://runsignup.com/Race/DC/Washington/Runstr5k) 🎫 You can also [buy a ticket with Bitcoin here](https://www.satlantis.io/events/1571/RUNSTR%3A-DISTRICT-5k) **Choose Your Charity** * Human Rights Foundation * ALS Network * Chimes International **Race Day** 📅 March 15, 2026 at 7:00 AM 📍 Haines Point, DC 🏃‍♀️‍➡️ Flat, scenic loop along the Potomac 🎶 After Party Brunch at [Pubkey DC](https://www.pubkey.bar/dc/home) with LIVE MUSIC and awards. 🎟️ Tickets: [https://runsignup.com/Race/DC/Washington/Runstr5k](https://runsignup.com/Race/DC/Washington/Runstr5k) 🎫 You can also [buy a ticket with Bitcoin here](https://www.satlantis.io/events/1571/RUNSTR%3A-DISTRICT-5k) [RUNSTR](https://www.satlantis.io/) is a free, privacy-first fitness app that turns your workouts into charitable impact, complete a workout, support a cause you care about.

Lets meet at Quarter Market in Ballston Quarter to play board games. We play a variety of games with a focus on Eurogames. If you don't know any of the games provided, be prepared to learn a new one. You are also welcome to bring your own games. Here are some games we play: * Brass: Birmingham * Power Grid * Dune Imperium * Viticulture * Puerto Rico * Bomb Busters If you are taking the Metro, the Ballston station on the Orange and Silver lines is a close walk away. Ballston Quarter also has 3 hour parking for $1 and 4 hour parking for $3. Quarter Market has a variety of food options for dinner and snacks. Please be mindful of other customers using Quarter Market, and make sure there is available table space for them. If table space is limited, consider other nearby locations. Shake Shack, El Rey, We the Pizza, and Cava are located across the street and have table space.

RSVP here: **[https://reg.experiences.redhat.com/flow/redhat/3558153/redhatfieldeventspreregnoappform/page/landingregistrationpage?sc_cid=](https://reg.experiences.redhat.com/flow/redhat/3558153/redhatfieldeventspreregnoappform/page/landingregistrationpage?sc_cid=)[RHCTN1260000475092](https://reg.experiences.redhat.com/flow/redhat/3558153/redhatfieldeventspreregnoappform/page/landingregistrationpage?sc_cid=RHCTN1260000475092)** Is configuration drift silently killing your stability? Join us for the next Red Hat User Group (RHUG) event in Washington D.C. and discover the future of IT infrastructure management with Red Hat Enterprise Linux (RHEL) 10 Image Mode. This isn't just another operating system update—it's a new paradigm. You’ll learn how to treat your entire OS as a versioned, container-native artifact, bringing the speed and control of DevOps to your foundational layer. **Event Highlights:** * Deep Dive: Deploying and maintaining a truly immutable, compliant operating system. * Expert Insight: How to use familiar container-native tools to build bootable RHEL images. * Networking: Connect with peers, Linux administrators, security engineers, and infrastructure architects. Don't miss this opportunity to transform your IT services. Date: Wednesday, March 26, 2026 Time: 12:00 PM – 3:00 PM EST Location: Red Hat Tysons Corner, McLean, VA Secure your spot today and get ready to eliminate operational "noise" for good. We look forward to seeing you there! Your RHUG Team

Join our new group’s third meeting. Meet fellow tech enthusiasts west of the beltway. ​Because our group is new, we have a poll for the direction we want to take this new group. ​[https://submatrix.net/article/Meetups/e9ym4fr8Ca](https://submatrix.net/article/Meetups/e9ym4fr8Ca) ​For this event, we will be running a working meetup. ​Our meetings are a great place to work on and show off what you do. We are always welcoming. ​Our format is great for people who have started on but not finished one or several side projects. ​We will start off with basic introductions and what we are working on and what our goals are. We’ll break the rest of the meeting into two working sessions. In between, we’ll do a quick check-in to see how folks are going. You can also RSVP to this event on Luma: https://luma.com/luucajlz

Title: Talk/listen about life-changing loss and grief, and care-giving challenges We have created “LET'S TALK - Leesburg” and you are invited to attend. Folks meet to give and receive support dealing with caregiving or life-changing events. This activity is for any one that is experiencing powerful life changes such as loss of independence, caregiving challenges, any loss that has been a life-changing blow to them or has significantly changed their life, including the loss of a precious person. Participants who attend the “LET'S TALK” group say that the group is a place to: Feel safe, to talk or to listen, gain understanding of experiences, and foster confidence! Realize that: “I Can do …” , “Get my equilibrium back.” “LET”S TALK” invites participants to come together...so that they might share the feelings, thoughts, questions, challenges and concerns. This activity is facilitated by a professional counselor.

**Agenda :** * 4.45 to 5.00 PM ET: Food and Networking * 5.00 to 5.50 PM ET: "Data Science & Machine Learning with Microsoft Fabric" Hello Everyone! Please join us for our March 12th edition of the AI-ML MeetUp. **Please note this is an in-person meeting and light refreshments/food will be provided. You will need a government-issued ID to enter the facility.** **Title:** Data Science & Machine Learning with Microsoft Fabric **Description:** Explore Microsoft Fabric’s integrated Data Science experience across ideation, preprocessing, modeling, & deployment. Learn how to ingest and prepare data via OneLake and Lakehouse, leverage Notebooks, Data Wrangler, Spark, SynapseML, MLflow for experimentation, & operationalize predictions with batch scoring and Power BI direct integration. Also, learn to build generative AI Q&A systems using Fabric Data Agents. **Location:** The meeting will be hosted in the Applied Information Sciences ( AIS ) office in Reston, at 11440 Commerce Park Dr # 600 · Reston, VA. The location is also right off the Silver Line metro's Wiehle-Reston Metro Station. **Parking:** Parking is paid and can be validated at the AIS office reception. We will meet in Room Lake Anne. We hope to see you all there!!!!

**Ready for a night of bold flavors and good company? 🌭🍕** Skip the kitchen and join your DTs family and friends for a fun-filled dinner at **[Kook Dogg Cafe!](https://www.kookdoggcafe.com/)** After our Thursday night Happy Hour, let’s head over for some delicious **artisan pizzas, mouthwatering sandwiches, and unique eats** at **12100 Sunset Hills Rd R-6, Reston, VA 20190**. Whether you're craving a crispy flatbread, a loaded sandwich, or something totally unexpected, Kook Dogg has something for everyone! Please **RSVP on our Facebook and Meetup pages** so we can give the restaurant a heads-up on how many hungry DTs to expect! We usually have a group of **12-20**, but the more, the merrier! Walk-ins are welcome, but reserving your spot helps us plan better. We’re always switching up the dinner spots for variety, so keep an eye out for **next week’s location**—because every **Thursday brings something new to the table! 🍽️**

meet at Tysons Corner Mall Upper Level Food Court