Mainframe Computing

Danceintime runs Cuban Salsa Classes & Social Dancing Every Saturday, all year-long. Come at 1:15 pm to sign in. Stay till 4 pm. Some of us go out for coffee or a bite to eat afterwards and everyone is welcome! $15/person. Cash, PayPal, Venmo, Apple Pay, or Card accepted. Chevy Chase Baptist Church; 5671 Western Ave. NW; Washington DC 20015. NOTE: Enter through back corner door of the church. Danceintime classes are great fun. The dance moves are beautiful, fun, and our class creates a bonded community... Check it out! Class will be held every Saturday in December....celebrate the holidays with dance! For more info: danceintime.com/classes Questions? Contact Barbbernsteintalks@gmail.com

Let’s celebrate AMC’s 150th Birthday – join us for this leg of the AMC 150 Relay in Maryland! We'll walk a 7.1-mile section of the WB&A Trail. This rail-trail was converted from an electric commuter railway that served Washington, DC, Baltimore, and Annapolis. The trail winds its way between Prince Georges County and Anne Arundel County, offering a mix of woods, water, and residential communities along the asphalt path. A bridge across the Patuxent River was completed in Spring 2025, now linking Prince George’s County and Anne Arundel County. The trail offers a peek behind the curtain of suburbia, with marshy wetlands, woods, bridges and tunnels, along with some trail sections that pass through residential neighborhoods and some road crossings. Participants should expect a mostly relaxed walk on pavement with little elevation, plus a mix of sun and shade exposure. Please bring a lunch or snack and ample supply of hydration fluids for a four-hour or longer activity, as we will take a lunch break about halfway. Dress for the temperature, with long pants for tick protection and sturdy running/walking shoes recommended. This hike is rated Moderate for its distance. Bathroom facilities includes a bathroom at the Riverdale Community Center at start and possible port-o-potty at the end. There may be others along the trail, but reports are that such facilities are inconsistent. Will update closer to the date. There is a porta-potty at the end of the hike on Electric Avenue. This activity is scheduled in conjunction with Appalachian Mountain Club’s 150 Relay celebration. From March to October, volunteers from AMC are offering a succession of hikes and other outdoor activities from Virginia to Maine, to commemorate the 150th anniversary of the organization’s founding in 1876. Though historically rooted in New England, over time AMC has expanded and established regional chapters through the Mid-Atlantic, including today’s host Potomac Chapter.

March is [International Mirth Month](https://nationaltoday.com/international-mirth-month/)! Based on findings indicating that laughter can improve one’s health – certainly more than grumbling and griping – the celebration encourages people to appreciate the humor in setbacks and disappointments. Things go wrong for everyone now and then: just look at the gamers in the photo above! Are they complaining about the state of their game? No, they’re laughing, which improves the condition of their blood vessels (singed fingers notwithstanding). AARGGH encourages you to follow their example, although if your game should burst into flames, please extinguish it before laughing. Spontaneous combustion is quite rare at Grand Gaming Melees, so focus on the fun! There’ll be board games, dice games, card games, tile games, and just about every other kind of game that can be played on a tabletop awaits you. You’re encouraged to bring some of your favorites and teach them to new players, but feel free to come without any and play the games others bring. If you see one you’d like to try, there’ll be someone eager to teach you. Snacks are a hot item at Grand Gaming Melees, but by “hot” we mean popular, not incendiary. A full day of gaming would be a grind without something to eat and drink! Please bring something delicious to share: popular delicious items include bags of chips, pretzels, crackers, and cookies. Some people bring a package of doughnuts or cupcakes; these are always popular and disappear quickly. Savory snacks like olives, vegetables with dip, or cheese appeal to players who don’t want to spend the entire day snacking on sweets. A few creative types may even bring something homemade; these contributions are even more appreciated. A refrigerator is available to store drinks and other items that should be kept chilled. Official start time is 10:30am. You can come and go at any time, but your host appreciates anyone who arrives as early as 10:00am (the library’s opening time) to help with setup. Many hands make light work! Cleanup begins around 4:00pm (or whenever you decide that you can’t squeeze in one more game before the end of the event). Remember, whoever starts cleanup first gets the best choice of leftover snacks to take home! As always, leave the room clean and tidy. **Please observe these rules regarding cleanup at Beatley library:** * Please ensure that food scraps, crumbs, and bits of packaging are not strewn in the kitchen or auditorium. The library closes shortly after our event ends, so anything edible left on the floor or counters will attract vermin overnight. Night vermin are the worst! * Please fold most of the tables and stack them under the coat rack – a few may remain where they were used – but DO NOT FOLD THE CHAIRS. Leave them out in any configuration that lets people walk around them easily. Many chairs are needed for programs the following day, so by folding them you only make more work for the organizers. On the other hand, more than a few tables left standing only impede the next day’s activities.

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

Brookside Gardens is Montgomery County’s incomparable, award-winning 50-acre public display garden within Wheaton Regional Park. Included in the gardens are several distinct areas: Aquatic Garden, Azalea Garden, Butterfly Garden, Children’s Garden, Rose Garden, Japanese inspired Gude Garden, Idea Garden, Rain Garden, and the Woodland Walk. The Formal Gardens areas include a Perennial Garden, Yew Garden, the Maple Terrace, and Fragrance Garden. Brookside Gardens also features two conservatories for year-round enjoyment. Parking and admission to the gardens are free. **Event Details:** This will be a study of lens focal length and how they affect the look of your photographs. How aperture effect the look of the subject (depth of field). **Lens Exploration** Organize sessions around different lens types: * **Macro photography** for close-ups of individual petals and delicate textures. * **Telephoto lenses** for compressing a scene, making rows of trees look overwhelmingly full of blossoms, and isolating subjects to manage crowds. * **Wide-angle lenses** for capturing the entire landscape, such as an avenue of trees, or placing a subject in the foreground to emphasize depth. * How to isolate your subject by the use of depth of field. **Recommended equipment:** DSLR or Mirrorless camera, Macro lens, Wide angle to telephoto zoom lens, flash with diffuser. **Brookside's Photography Guidelines:** * **Do not disturb any gardens, stand on rocks or displays, block paths, or climb garden or fountain walls.** * **The photo session must not interfere with other visitors’ enjoyment of the gardens.** * **Absolutely no tripods are allowed in the Conservatories.** * **Published photographs should credit location of photograph, i.e. “Brookside Gardens, Wheaton, MD”.** **RAIN DATE:** April 4th **Share Your Work:** We encourage you to share your images with us on the [Harford County Photography Group's Facebook ](https://www.facebook.com/groups/hcphotogroup)page.

**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!** This group is sponsored by the Dianetics Life Improvement Center.

[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).

Join us for a gentle, honest conversation for those navigating the aftermath of job losses, especially **current and former federal employees and contractors**, whose careers of public service can make this kind of transition feel uniquely personal. This session addresses the full spectrum of emotions, from shock and betrayal to fear and grief, while offering spiritual perspectives on unexpected life changes. **We’ll also address the collective grief of losing professional communities and how to build new sources of connection and meaning.** We'll explore practices for processing grief, managing identity shifts when your career suddenly changes, and discovering meaning beyond your professional role. Join the [Meditation Museum](https://urldefense.proofpoint.com/v2/url?u=https-3A__www.meditationmuseum.org&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=wZBKb3MO6q52I1tqr9OcmFjaUGh53wNNH_P_kDBMDrQ&m=Mmd3moeOh5cQePHuNoYT0OgL2u9nW3RTNXgtKZ_dkkJR03xjxX4JdpmPxoWehj2J&s=Ss2J9pcjHRfD98ZXVtKhH7lOYmcicFXsY3OltVy4__8&e=), a remarkable nonprofit dedicated to saving lives and strengthening communities rooted in resilience and perseverance, as we partner with [RIF2RISE](https://urldefense.proofpoint.com/v2/url?u=https-3A__rif2rise.org_&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=wZBKb3MO6q52I1tqr9OcmFjaUGh53wNNH_P_kDBMDrQ&m=Mmd3moeOh5cQePHuNoYT0OgL2u9nW3RTNXgtKZ_dkkJR03xjxX4JdpmPxoWehj2J&s=_mXbkb9oPwWvQKYMcGRzcS-PZ3DLv2dtmI_rd4lkj4U&e=) for this special gathering. [RIF2RISE](https://rif2rise.org/) is a non-partisan, action-oriented organization founded in 2025 by federal employees and contractors directly affected by the unprecedented 2025 reduction in force actions and furloughs. Their mission is to restore visibility, support resilience, and help individuals rebuild purpose, confidence, and connection after career disruption. **This program is non-partisan and focused entirely on well being, healing, and community care. It will be a meaningful experience not to be missed and will offer genuine support to all who attend. Come as you are and leave renewed.** \*\*\*\*\*\*\*\*\*\* ***Dr. Kanu Kogod*** *is an anthropologist, master certified coach, mindfulness meditation teacher, and lifelong student of spirituality. For more than five decades, she's explored how awareness, compassion, and embodied presence can help people meet change with courage and grace.* *Dr. Kogod’s work integrates mindfulness, emotional intelligence, and somatic practices to support deep personal and collective transformation.* *Whether guiding individuals or groups, Dr. Kogod helps people come home to themselves, finding steadiness, clarity, and connection even in uncertain times. Her gentle, grounded approach invites each person to rediscover their natural resilience and inner wisdom.* **Saturday, March 28th, 4:30pm - 6:00pm. Meditation Museum, 9525 Georgia Ave, Silver Spring, MD. FREE EVENT - Registration Required at** [https://shorturl.at/gaulG](https://shorturl.at/gaulG)

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/

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.

**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

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!

**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.

**New Dojo Location!** **Draft Day Columbus** 1130 Dublin Road Columbus, OH 43215 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)