BSD

Whether you're taking your first dance step or have been a constant bachatero, join us for great music, food, and drinks! A free bachata dance class starts at 6:30 p.m., and food and drinks will be available for purchase. Please RSVP on [Action Network](https://actionnetwork.org/events/dsa-latin-dance-social-2/) to receive further updates on this event. \* \* \* This event is open to both DSA Members and supporters. Not a Member? Please consider [becoming a Member](https://dsausa.org/join?source=Metro%20DC). Fees are on a sliding scale according to what you feel you can afford.

Let's get together to play some fun BB level Quads games at Quincy Park. **Format**: Quads and Doubles **COST**: FREE **Court Type**: Outdoor grass **Minimum Skill Requirements**: Intermediate-BB (click [here](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic) for details) \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Smiley Social documents:** 1. [Group Rules ](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 2. [Liability Waiver ](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco) 3. [Volleyball Levels](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/)

Join us at Don Taco in Old Town Alexandria for our first Taco Thursday Happy Hour! Connect with fellow Libertarians in Northern Virginia and the wider DC area for good conversation, drinks, and tacos! We will have a large table in the **upstairs bar area** of Don Taco reserved for us. The Libertarian Party of Northern Virginia is your local affiliate of the national Libertarian Party. Since 1971, the Libertarian Party has been fighting for personal freedom, economic freedom, and peaceful foreign policy. We run candidates for office, advocate for liberty in our community through our presence at local fairs and festivals, and connect fellow DC area libertarians through events like these.

UXDX, Refresh DC, Friends of Figma, and User Experience University are joining forces for a night of good drinks, great convos, and even better connections. Whether you're a UX designer, researcher, product manager, or engineer, if you work in the product space, this night is for you. Come connect with the people shaping DC's design and tech scene. What to expect: — Network with DC's UX, product, and engineering community — A chance to WIN a free ticket to UXDX during our giveaway — Score 25% off tickets to UXDX just for attending! Bring a friend (or two) and we’ll see you there!

• What we'll do On https://blackecon101.podbean.com/ Thursdays at 6 pm. discussing the economy....

MDC DSA’s Labor Magazine Discussion Club seeks to provide a monthly discussion space to think through and debate tactics, strategy, and theoretical analysis within the currently existing Labor movement. We hope to be a nerve center for germinating new and incisive analysis useful for the cause of workers self-emancipation. All are welcome to join the club’s meeting, where we will discuss three articles from labor magazines currently circulating. For more details and links to the readings, check out [the group's info doc](https://docs.google.com/document/d/1rq5JzlubZrLNML0EbGUHiNvXNC42VRz8bmJgLH4GE-s/edit?tab=t.0) Please RSVP on [Action Network](https://actionnetwork.org/events/labor-magazine-discussion-club-2/) to receive further updates on this event. \* \* \* This event is open to both DSA Members and supporters. Not a Member? Please consider [becoming a Member](https://dsausa.org/join?source=Metro%20DC). Fees are on a sliding scale according to what you feel you can afford. This event is open to both DSA Members and supporters. Not a Member? Please consider [becoming a Member](https://dsausa.org/join?source=Metro%20DC). Fees are on a sliding scale according to what you feel you can afford.

***Meet us in the Rockville Library, Collaboration room #4 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. 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) Meet us in the Rockville Library, Collaboration room #4

Join our ASL Brunch on Sundays in Greenbelt! All ASL users and learners are welcome. Brunches are alternately held at two restaurants in Greenbelt, both in the same town plaza. ODD WEEKS: 1st, 3rd, and 5th Sundays, we meet at Cedars of Lebanon, 103 Centerway. EVEN WEEKS: 2nd and 4th Sundays, we meet at New Deal Café,113 Centerway. \*\*\*\*\*This week is an exception because it is Easter and Cedars is closed. So we will be at the New Deal Cafe this time. We are the Greenbelt ASL Community, a group of both Deaf and hearing people who hang out, chat about everyday goings on, trade stories, get to know each other better, and of course, enjoy food together. Many members use ASL as their primary language, several are interpreters or other fluent ASL users, while others are ASL learners who wish to improve their skills while making new friends. Before or after brunch, you can visit the farmer's market and small coop grocery store in the plaza. Please RSVP so we can contact you via email if needed. Our group is on Facebook as Greenbelt ASL Community. Some long-time group members don't mark their attendance here, so feel free to stop by even if you don't see others who have RSVP'd on Meet-up.

Let's get together to play some competitive quads and doubles volleyball. **COST**: FREE **Court Type**: Outdoor grass **Minimum Skill Requirements**: BB+ (click [here](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic) for details) Attention: 1. This event is **NOT on a first come-first serve** basis and players with higher skill level and players who can bring a net/ball will get priority over others on the wait list. 2. Since skill levels are **self-reported**, some new attendees may not meet the expected level. For doubles, we encourage you to choose a partner you can enjoy the game with, and since this a competitive event, it is okay if you make a strong team and win all the games. 3. Each person must help set up and take down one net, leaving some nets unset for latecomers. 4. Please answer all questions, so it's helpful for us to organize the event. **Smiley Social documents:** 1. [Group Rules](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 2. [Smiley Social Volleyball Levels](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/edit) 3. [Good doubles partner](https://docs.google.com/document/d/14weEw-P52XKx0P8K2l-ZOFtYU61wmfdkSkopbG5avro/) 4. [Liability Waiver](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco)

Title: Beyond Cryptography: Geometric Symmetry & Parity Stability Summary: Decoding Chaos: Using Quantum-Inspired Symmetry Metrics to Detect Stealth Attacks in High-Stakes Infrastructure. Agenda: Why symmetry matters after the proof is done. Symmetry as an Invariant Symmetry as a Security Primitive Trust as a Continuous Function Live Thought Experiment Engineering, Implications & Open Questions Move away from traditional bit-matching and discuss "Symmetry Drift." Explain how system states can be modeled as high-dimensional manifolds where an attack represents a geometric deformation.T(t)=f(symmetry stability,parity consistency,temporal coherence) Speaker: Vijay Krishna Vijay is a security engineer focused on runtime observability and symmetry drift in cryptographic systems. He is the founder of Vyapti Resonance and the creator of the Quantum Security Probe (QSP), a telemetry-driven integrity monitoring framework for post-quantum infrastructures. His work bridges theory, engineering, and long-lived system behavior, emphasizing measurable trust over binary verification. Vijay has 9 accredited licenses in Quantum Computing. Career Snapshot: Microsoft → DuPont → Rockefeller Capital Management → Morgan Stanley → New York Life → Founder, Vyapti Resonance Across this trajectory, Vijay has operated at the core infrastructure layer of organizations—cloud platforms, identity systems, distributed compute, reliability engineering, and governance frameworks. His work has consistently involved systems that cannot fail, particularly in regulated financial and insurance environments. This enterprise grounding strongly informs his academic and research outlook: quantum and AI systems must be operable, governable, auditable, and teachable, not merely theoretically elegant.

**Notice the new time. We are now 2-5pm.** Bring your own board games! The MoCo Pride Center has a few games as well. Newcomers welcome! You don't need to know anything, we will teach you how to play! We do not serve food. Note that you can bring drinks and food, but plan to leave the place tidy. Some of us may also get food together afterwards. Info about the MoCo Pride Center: [https://www.mocopridefamily.org/pride-center-home](https://www.mocopridefamily.org/pride-center-home) The Center is close to the **Bethesda Metro Station**. It is on the 2nd floor of the **Bethesda-Chevy Chase Regional Services Center**. Look for the **blue awning** that says Geste Beer at the cross of Old Georgetown Road -- the front entrance is directly to the left of this awning. The Bethesda-Chevy Chase Regional Service Center has an attached garage, which is accessible on Edgemoor. Go past the Center, then turn right at the stop sign across from the Metro stop. The garage is your first right. Payment is mobile using the ParkMobile app.

Let's get together to play some competitive coed doubles volleyball. **COST**: FREE **Court Type**: Outdoor grass **Minimum Skill Requirements**: Solid BB (click [here](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic) for details) Attention: 1. This event is **not always on a first come, first served basis**. [Good doubles partner](https://docs.google.com/document/d/14weEw-P52XKx0P8K2l-ZOFtYU61wmfdkSkopbG5avro/) and those who can bring a net and ball, may get priority over others on the waitlist. 2. Since skill levels are **self-reported**, some attendees may not meet the expected level in reality, so we encourage you to choose a partner you can enjoy the game with, and since this is a competitive event, it is okay if you make a strong team and win all the games. 3. Each person must help set up and take down one net, leaving some nets unset for latecomers. **Smiley Social documents:** 1. [Group Rules](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 2. [Smiley Social Volleyball Levels](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/edit) 3. [Good doubles partner](https://docs.google.com/document/d/14weEw-P52XKx0P8K2l-ZOFtYU61wmfdkSkopbG5avro/) 4. [Liability Waiver](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco)

**Put yourself on the waiting list, we will add you once we have the organizers sorted.** **++++++++++++++++++++++** **The Ride Summary:** **(Must Read)** **++++++++++++++++++++++** * RIDE NAME: The OTHER Cherry Blossom Ride (Kenwood) 2026 * START LOC: Columbia Island Marina / LBJ Memorial Grove * START GPS: [https://goo.gl/maps/8t6o5ZWsQps](https://goo.gl/maps/8t6o5ZWsQps) * START PARKING: Parking lot, ample parking. * ARRIVAL: 11:00 a.m. * SPEECH: 11:15 a.m. * ROLLING: 11:30 a.m. * LEVEL: Beginner(+) [distance considerations] * DISTANCE: 20 miles * PACE: 12 to 15mph * TERRAIN: Mostly Trail, Some Street, Minor Hills. * RIDEWITHGPS ROUTE: CBG_CBLOSSOM_OTHER_RIDE_2026 [https://ridewithgps.com/routes/29679037](https://ridewithgps.com/routes/29679037) **NOTES:** * Bring a camera. * Bring a snack. **++++++++++++++++++++++** **The Ride: Detail** **++++++++++++++++++++++** For your riding pleasure NoVA CBG presents The OTHER Cherry Blossom Ride. While the famous cherry blossoms are around the Tidal Basin and Hains Point, the crowds there are truly stunning, it just isn't practical to RIDE there. (Our Tidal Basin cherry blossom rides are ride to the site, park, and walk around). Lucky for us that there are other collections of blossoms around the area. One of the best is up in the Kenwood area of Bethesda. Kenwood hosts around 1200 trees that were planted in the 1930s and 40s. The route is an "out and back" starting from the LBJ Grove / Columbia Island Marina, heading up Mt Vernon trail to Key Bridge, where we cross over and take Capitol Crescent Trail up to Kenwood. We’ll take in the trees, and then reverse route back to the start. **++++++++++++++++++++** **The Meeting Spot:** **++++++++++++++++++++** Columbia Island Marina / LBJ Memorial Grove George Washington Memorial Pkwy, Arlington, VA 22202 [https://goo.gl/maps/8t6o5ZWsQps](https://goo.gl/maps/8t6o5ZWsQps) IMPORTANT: Give yourself ample time to find this location. We are starting from Columbia Island Marina/LBJ Memorial Grove on the river (not Pentagon) side. The location can be difficult to find because it has no exact physical address. USE THE GPS LINKS !! **++++++++++++++++++++** **The Ride after the Ride:** **++++++++++++++++++++** Island Time Bar & Grill at Columbia Island Marina **++++++++++++++++++++** **Ride Level Chart** **++++++++++++++++++++** NoVA CBG tries to accommodate all levels of cyclists by offering different types of rides. We just ask that you come to the ride that suits your current riding ability the best. * Introductory Level : If you haven't ridden a bike in a number of years (or are uncertain of your abilities on a bicycle). * Beginner Level : You can easily ride your bike for 10 miles with some minor hills at a comfortable pace of 10+ to 12+ mph. * Medium Level : You can do 20 miles pretty easily at a moderate pace of 13 to 15+ mph. * Advanced Level : You can do 20++ miles easily at a 15+ pace and / or handle various challenges as rain, night riding, or other odd cycling situations. **++++++++++++++++++++** **The Fine Print:** **++++++++++++++++++++** An RSVP of 'YES' is your digital signature and means you have read and understood MEETUP.com's: * "Terms of Service : Section 6. Release " found at https://www.meetup.com/terms/ * NOVA-CBG's "Assumption of Risk Agreement" found @ https://www.meetup.com/novacbg/pages/1942951/NOVA-CBG_Waiver/ * NoVA CBG's "COVID Policy" found @ http://bit.ly/2021_NoVACBG_COVID19_POLICY Helmets are required to participate in all NOVA-CBG rides. NO exceptions. All riders ride at their own risk and with the understanding that cycling is an inherently dangerous activity. When coming to the meetup you do so voluntarily and are ready and able to participate in the ride as described under the conditions of the day. Be on time for the "pre-ride" preparation. If you do not attend the pre-ride preparation you will not be allowed to participate on the ride. Again, no exceptions.

Let's get together for a picnic at Quincy park. We'll simply hangout, relax, and enjoy each other's company. Cost: Free **Optional**: Feel free to bring something — like food, drinks, a blanket, or a lawn chair. You’re also welcome to bring games such as cornhole, board games, or any other lawn games to enjoy together. Exact meeting location: [https://maps.app.goo.gl/5J3J9EF3x5qBERoB6](https://maps.app.goo.gl/5J3J9EF3x5qBERoB6)

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!

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

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.

Join us again this Saturday for drinks and sweets at this delicious Vegan co-op bakery. Mingle with likeminded Columbus Vegans. We will aim to sit outside after purchasing items and hopefully taking in cooperative weather. Special note on parking: Please try to park along Acton, Richards and/or Chatham streets so as to free up the lot at the back of the building for pick-up orders. Thank you. 😊 Patty Cake offers everything from cupcakes, cookies, cakes, muffins, whoopie pies, as well as gluten free goodies. They also have coffee, oat milk and cold brew

The Humanist Monthly Program is our longest running event and still a community favorite. In the old days it used to be called "Going to HCCO" and we still like to think of it as our flagship event. We will be hearing from Becca Powell, Director of Advocacy and Outreach at Unchained At Last, an organization whose mission is dedication to ending forced and child marriage in the United States through direct services and systems change. Unchained At Last's mission clearly meshes and addresses several of our Humanist Ten Commitments. Becca will educate us about an issue many of us may not be familiar with--but should be. Food and drinks will be provided at the event. Feel free to show up a little bit early to hang out and talk. Going forward our meetings will be hybrid. You can meet us in-person or attend online Join Zoom Meeting [https://us02web.zoom.us/j/87836564953?pwd=4Mi57ElZkDIFlb1fnlNwOJ0NiOK4tP.1](https://us02web.zoom.us/j/87836564953?pwd=4Mi57ElZkDIFlb1fnlNwOJ0NiOK4tP.1) Meeting ID: 878 3656 4953 Passcode: 760812 One tap mobile +19292056099,,87836564953#,,,,\*760812# US (New York) +13017158592,,87836564953#,,,,\*760812# US (Washington DC) The formal presentation will start at noon

**Join us for a vegan morning at downtown Columbus's premier vegan diner!** * **Date:** Saturday, April 4th * **Time:** 11:00 AM * **Location:** [4th & State](https://www.4thandstate.com/) (152 E State St, Columbus, OH 43215) * **Type:** Community Dining / Brunch * **Cost:** Pay-as-you-go (Entrees typically range from $10–$20) *** **About the Event** Come catch up with fellow vegans and vegan-curious friends in the heart of downtown. 4th & State is a family-owned, "mod diner" known for its laid-back atmosphere and incredibly indulgent vegan comfort food. Whether you’re looking to discuss animal rights activism or just want to enjoy a milkshake with like-minded people, all are welcome! **The Food** This spot is **100% vegan** and offers a massive menu of diner classics. Highlights include: * **Signature Brunch:** The **Vrunchwrap**, pancakes, and French toast sticks. * **Comfort Classics:** Loaded fries, burgers, and their "hand-breaded tempeh chicky." * **Allergen Friendly:** They offer a dedicated **gluten-free** menu and are a **tree-nut-free** kitchen (with the exception of coconut oil). **Important Details** * **Seating & Reservations:** 4th & State typically does **not take reservations**, so please RSVP early so we can try to coordinate seating together. * **Parking:** There is free and paid street parking nearby, as well as several paid parking lots in the downtown area. * **Accessibility:** The restaurant features a wheelchair-accessible entrance and seating.

Sleep in on Sundays. When you've had your fill of pajama-time, roll out and have some tasty brunch with your fellow Humanists!