Digital Signal Processing

Sofia's social scene needs you on Monday. We're hosting a casual Sofia Expats meetup – a relaxed evening for locals and expats to meet, chat, and just enjoy good company. * Monday, 25 May * 19:00 * Edin Bar, Graf Ignatiev 24 Join the event on Facebook for updates: https://www.facebook.com/events/3061894383995653 Whether you moved here last week or you've been calling Sofia home for years, this is your chance to expand your circle a little. Come meet someone who's been through the same bureaucratic nightmare you have. Get a restaurant recommendation from a local. Or just have a fun Monday evening. We'll be somewhere central in Sofia. Exact location dropping soon – RSVP so you don't miss it. See you there! 🙋‍♀️ Coming solo? Don't worry. Maria and Liliya will be welcoming guests so you don't have to feel alone or awkward. \*\*\*\*\*\*\*\*\*\*\* [www.SofiaExpats.com](https://l.facebook.com/l.php?u=http%3A%2F%2Fwww.SofiaExpats.com%2F%3Ffbclid%3DIwZXh0bgNhZW0CMTAAYnJpZBExd3hHT2kwT0hYM1FJUVBqVHNydGMGYXBwX2lkEDIyMjAzOTE3ODgyMDA4OTIAAR4rvS_PRHmgSC7UU9UYlc-BPWM9KMuZiK56bB9rt7jEFcc0TkeZcoU4W66GwA_aem_FqS6xhLF7_vVzoLVjpptqg&h=AUCS35FfpViN9L_zstBoH9Kmyry7hnT_QM_RQnX_5ksaKMLJsnJA71iWkywvMisjH7MFCMVhwZxpki9iPopG677ADnR5MPEbBQl3AQzCUShitSjyy_c1ZZdPANmjbw60zGD7zOCSu2FrmZDIVH8&__tn__=q&c%5B0%5D=AUDP8EuZzbYxR3zlgOCMIfPqvxafb0aHHkC_-BxUbPdmnPqIrHOcUac9Tzd6NzkU1CHKRi0qGmkrJKdsn6Z51O2rr8-_rPbI2CaWLk81QOPR6wFrf8iiS8sTCs-KzIe8J2JLqkkKbjGy044mfEbxDNd9kBYNng) is your not-boring weekly newsletter for English-friendly events, activities and cultural tips. Subscribe to receive it every Monday. 📸 Keep in mind that pictures will be taken during the event for marketing purposes.

Здравейте, WordPress хора! Както знаете, благодарение на Matt Mullenweg и Mike Little, на 27 май 2003 г. един млад проект с отворен код направи първите си стъпки в света - и ето ни 23 години по-късно, все още влюбени в него. Двама души го създадоха, но хиляди доброволци, разработчици, дизайнери и ентусиасти по целия свят го превърнаха в това, което е днес. Затова на 27 май 2026 г. отново ще се съберем в София, за да вдигнем тост (и хапнем парче торта) за рождения ден на любимата ни платформа! Какво ни очаква? Среща с хора, които говорят на нашия език - този на темите, плъгините, къстъмизациите и късните нощи в WordPress редактора. Очакват ни разговори, хапване, торта и онова специално усещане, когато общността се събере на едно място. Докато ние празнуваме в София, хиляди WordPress ентусиасти по целия свят правят същото – а ние сме част от тази голяма картина. Без значение дали си разработчик с 15 години стаж, дизайнер, който прави първия си сайт, блогър, агенция или просто човек, който обича отворения код – има място за теб на тази маса. Малко повече инфо: 🎟️ Събитието е напълно безплатно. Единственото, което трябва да направите, е да се регистрирате в събитието в Meetup.com. 📍 Мястото? Добре познатото ни Sky Beauty Lab! 👕 Донеси любимият си суаг! Извади от гардероба най-готината WordPress тениска, шапката с логото, чорапите с Wapuu – каквото имаш. И не забравяй да публикуваш снимки с хаштаговете #WP23 и #WP23Sofia, за да покажем на света как празнува българската общност. Благодарности: Това парти нямаше да е възможно без партньорите ни, които стоят зад WordPress Sofia Meetup и общността ни вече години наред – [SuperHosting.BG](SuperHosting.BG), [Delta.BG](Delta.BG), [Jump.bg](Jump.bg) и [JetHost.BG](JetHost.BG). Благодарим ви, приятели! <3 Заредете доброто си настроение, отворете календара и си запазете датата. За тези, които не знаят: месечните срещи на WordPress Sofia Meetup събират десетки хора (независимо дали са професионалисти или абсолютно начинаещи), които по някакъв начин са свързани с най-използваната система за управление на съдържанието в света. Те са напълно безплатни и отворени за всички, които обичат WordPress - единственото нещо, което трябва да направите, за да присъствате, е да се регистрирате в събитията тук. Очакваме ви! Фори, Ники, Явор

Последно за сезона издание преди лятната ваканция! ☀️ И това ако не е повод да се видим! 🙂🎉 **Python Meetup @ Sofia** 🐍 е тук през май 🌸 с интересна тема 💡 и почерпка 🍻 преди така дългоочакваните летни месеци! Ще се съберем в края на май 📅, ще споделим опит 🤓, ще се почерпим 🍹 и ще си поговорим 💬, по стара пайтънмийтъпска традиция ;) **🗓️ Датата е 26-ти май, а мястото е 📍Barter Community Hub 🏢.** **Започваме в ⏰ 19:00ч.** 🎫 Събитието е напълно безплатно ✅, нужно е само да потвърдиш присъствие тук 🙌 📢 Тема: **Async Python: The (bright) future after the end of GIL** 👨‍💻 Лектор: **Ивайло Дончев** 💭 **За какво ще си говорим:** Когато говорим за асинхронното програмиране с Python 🐍, винаги изниква една мистична абревиатура - GIL 🤔. В лекцията ще говорим за това как се промени асинхронното програмиране в python през годините 📈, какво е GIL, защо беше нужен, защо беше нужно да се премахне ❌ и какво означава това на практика ⚙️. Лекцията ще бъде на български език! 🇧🇬 🎙️ **За лектора:** Ивайло Дончев е Senior Full Stack developer 👨‍💻 и Technical Team Lead 🧠 в Waracle (България). Има 10+ години опит с Python 🐍 и Django, лектор на EuroPython 2018, 2022 и 2023 🎤 и лектор на курсовете на HackBulgaria 📚. След лекцията продължаваме в networking частта 🤝 с традиционната почерпка 🍻 от нашите партньори от **[Waracle](https://waracle.com/)** 🙏. Разбира се, ще има и томбола 🎁. А след това ще се отдадем на заслужена лятна почивка 🏖️ и ще се видим отново през септември 🍂! Както се казва, да сме живи и здрави! 🙏 Очакваме те на 26-ти май в Barter Community Hub!📍 Започваме точно в 19:00! ⏰ \-\-\- Final edition of the season before the summer break! ☀️ If that’s not a reason to get together, we don’t know what is! 🙂🎉 **Python Meetup @ Sofia** 🐍 is back this May 🌸 with a great topic 💡 and some treats 🍻 before we head into those long-awaited summer months! We’re gathering at the end of May 📅 to share knowledge 🤓, grab a drink 🍹, and catch up 💬, just like in the good old Python Meetup tradition ;) 🗓️ Date: **May 26** 📍 Location: **Barter Community Hub** 🏢 ⏰ Time: **19:00** 🎫 The event is completely free ✅ - just make sure to RSVP 🙌 📢 Topic: **Async Python: The (bright) future after the end of GIL** 🚀 👨‍💻 Speaker: **Ivaylo Donchev** **💭 What we’ll cover:** When we talk about asynchronous programming with Python, a mysterious abbreviation always comes up - GIL. 🤔 In the lecture we will talk about how asynchronous programming in Python has changed over the years 📈, what GIL is, why it was needed, why it needed to be removed❌ and what it means in practice.⚙️ The talk will be in Bulgarian 🇧🇬. 🎙️ **About the speaker:** Ivaylo Donchev is a Senior Full Stack Developer 👨‍💻 and Technical Team Lead 🧠 at Waracle (Bulgaria). He has 10+ years of experience with Python 🐍 and Django, has spoken at EuroPython (2018, 2022, 2023) 🎤, and is also a lecturer at HackBulgaria 📚. After the talk, we’ll continue with a networking session 🤝, featuring complimentary drinks 🍻 kindly provided by our partners at **[Waracle](https://waracle.com/)**[ ](https://waracle.com/)🙏. And yes… there will be a raffle 🎁! Then it’s time for a well-deserved summer break 🏖️, and we’ll be back in September 🍂. Until then - stay awesome and take care! 🙏 See you on May 26 at Barter Community Hub!📍 We start right at 19:00 ⏰

**Founders Running Club** (FRC) brings founders, investors, tech, creative people and startup enthusiasts together for weekly easy runs and networking. We like to be comfortable when we run and finish with coffee and conversations. Choose your pace or follow a pacer—pets, friends, family, are welcome. 🗓️ Launched in San Francisco, July 16, 2022 🌍 Now in 35+ cities 📅 Running + Networking events + Community **Join the community** [http://foundersrc.com/chats](http://foundersrc.com/chats) **Stay updated**: Instagram [http://instagram.com/foundersrc/](http://instagram.com/foundersrc/) Podcast [http://podcast.foundersrc.com/](http://podcast.foundersrc.com/) LinkedIn [http://linkedin.com/company/foundersrc/](http://linkedin.com/company/foundersrc/) Strava [http://strava.com/clubs/foundersRC](http://strava.com/clubs/foundersRC) Website [http://foundersrc.com/](http://foundersrc.com/)

Sofia's social scene needs you on Monday. We're hosting a casual Sofia Expats meetup – a relaxed evening for locals and expats to meet, chat, and just enjoy good company. * Monday, 25 May * 19:00 * Edin Bar, Graf Ignatiev 24 Join the event on Facebook for updates: https://www.facebook.com/events/3061894383995653 Whether you moved here last week or you've been calling Sofia home for years, this is your chance to expand your circle a little. Come meet someone who's been through the same bureaucratic nightmare you have. Get a restaurant recommendation from a local. Or just have a fun Monday evening. We'll be somewhere central in Sofia. Exact location dropping soon – RSVP so you don't miss it. See you there! 🙋‍♀️ Coming solo? Don't worry. Maria and Liliya will be welcoming guests so you don't have to feel alone or awkward. \*\*\*\*\*\*\*\*\*\*\* [www.SofiaExpats.com](https://l.facebook.com/l.php?u=http%3A%2F%2Fwww.SofiaExpats.com%2F%3Ffbclid%3DIwZXh0bgNhZW0CMTAAYnJpZBExd3hHT2kwT0hYM1FJUVBqVHNydGMGYXBwX2lkEDIyMjAzOTE3ODgyMDA4OTIAAR4rvS_PRHmgSC7UU9UYlc-BPWM9KMuZiK56bB9rt7jEFcc0TkeZcoU4W66GwA_aem_FqS6xhLF7_vVzoLVjpptqg&h=AUCS35FfpViN9L_zstBoH9Kmyry7hnT_QM_RQnX_5ksaKMLJsnJA71iWkywvMisjH7MFCMVhwZxpki9iPopG677ADnR5MPEbBQl3AQzCUShitSjyy_c1ZZdPANmjbw60zGD7zOCSu2FrmZDIVH8&__tn__=q&c%5B0%5D=AUDP8EuZzbYxR3zlgOCMIfPqvxafb0aHHkC_-BxUbPdmnPqIrHOcUac9Tzd6NzkU1CHKRi0qGmkrJKdsn6Z51O2rr8-_rPbI2CaWLk81QOPR6wFrf8iiS8sTCs-KzIe8J2JLqkkKbjGy044mfEbxDNd9kBYNng) is your not-boring weekly newsletter for English-friendly events, activities and cultural tips. Subscribe to receive it every Monday. 📸 Keep in mind that pictures will be taken during the event for marketing purposes.

Combinatorial optimization problems arise across logistics, scheduling, and engineering, and C++ remains a language of choice when performance matters. This lecture takes a practical look at solving such problems in C++, using the Electric Vehicle Routing Problem as a running example. We begin with an exact solver, formulating the problem as a mixed-integer program and trying to solve it through GLPK's C API directly from C++. Exact methods, however, quickly hit their limits on real-world instances. The second half of the talk turns to metaheuristics: how they are designed, why C++ is particularly well suited for implementing them, and what design choices matter most in practice. We'll walk through a concrete implementation, touching on data structures for fast neighborhood evaluation, generic algorithm design with templates, and the performance considerations that separate a prototype from a production-ready solver. The goal is not to advocate for one approach over another, but to show how C++ supports the full spectrum of optimization techniques. # About Speaker Luka Matijević is a researcher at the Mathematical Institute of the Serbian Academy of Sciences and Arts, whose work bridges academic research and freelance engineering. He's drawn to identifying the right algorithm for a given problem — and to the kind of careful optimization captured by one of his favourite Futurama lines: *"When you do things right, people won't be sure you've done anything at all."* ## 📅 Event Details | | | | --- | --- | | 👤 **Speaker** | **[Luka Matijević](https://www.linkedin.com/in/luka-matijevic/)** | | 🕕 **Date & Time** | **27th of May (Wednesday), 6 pm** | | 📍 **Location** | **Beograđanka, Vidikovac, 22nd floor** | | 🏢 **Address** | **Masarikova 5** | | 💻 **Online** | **[C++ Serbia YouTube](https://www.youtube.com/@cppserbia)** | See you!

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/

We meet to learn and practice American Sign Language and to grow our familiarity with Deaf culture. Facilitated by hearing folks (with a connection to a professional interpreter) using Deaf-created content. People of all ASL skill levels are welcome! As we learn, we hope to connect more with the Deaf community in Central Ohio. Join us as you're able! Come regularly or just once - whatever you're looking for! Each meetup will explore different topics related to ASL/Deaf culture, and will feature time to practice conversation with one another. Just bring yourself and a willingness to learn!

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** Like it or not, AI agents are now capable of turning a quickly written paragraph of requirements into a pull request that is ready to be integrated into real-world production applications and it's now our responsibility to make sure AI doesn't go rogue and take down prod - or corrupt our data by misunderstanding the requirements or our existing schemas. In this session we'll explore strategies to protect our codebases through unit and integration testing, documentation, and code review along with additional ways of providing context and guard rails to our AI agents as they carry out the work we've assigned them to do. By the time we're done, you'll have a firm grasp of the problem and understand some helpful options for protecting your codebase from vibe coding mishaps getting YOLOed into prod. **YouTube Link** TBD

**TBA**

Bring your work or your hobby, hang out, and code with us. Follow @buckeyecocoa for more information.

Some trained COUNT volunteers work together once a month at RMH (http://www.rmhc-centralohio.org/volunteer.php) as Housewarmers (usually on the 1st Sunday from 1 – 5 PM). Some schedule other shifts at their convenience. You may try this out with less fuss by following a "Fast track" or go through the normal process. Fast track • Arrange a time to shadow a COUNT volunteer. Call Dave Nohle at 614-268-9558 (cell). • Show up and try it out. • Complete application, etc. later. Normal process • Complete an online application (http://rmhc-centralohio.org/volunteer/). • Attend orientation in advance. • At orientation you will complete forms agreeing to keep family/patient info private and allowing a background check and tour the facility. • Complete one training shift. Daily shifts are: morning 9 AM - 1 PM, afternoon 1 - 5 PM and evening 5 - 9 PM. • Schedule shifts online using the on the RMH scheduling system (http://www.volgistics.com/ex/portal.dll/?FROM=32895). The Ronald McDonald House (RMH) provides housing and meals for families with sick children. The Columbus RMH is the largest in the world with 137 rooms. COUNT has been volunteering there since May 2014. Housewarmers work with RMH guests to provide a home-like environment - greet, assist with family needs, answer phones, give tours, assist with checkin/checkout, prepare guest rooms after checkout, clean facility, laundry, restock supplies and staff the front desk. RMH Housewarmers volunteer at least one four-hour shift a month. All Housewarmers must complete an application and agree to a background check before they can be full fledged volunteers.

Join us as we get together to see Paul Rudd in the latest comedy-drama-musical from John Carney, POWER BALLAD! The film follows a washed-up wedding singer, a fading boy band singer and a stolen hit song. Here’s a description, trailer and plan for this event: DESCRIPTION: Rick, a washed-up wedding singer, and Danny, a fading boy band star, bond over music and a late-night jam session. When Danny turns Rick's song into a hit, Rick sets out to reclaim the recognition he believes he deserves. Power Ballad is written/directed by John Carney, the master of the modern musical and creative mind behind Once, Begin Again and Sing Street! It stars Paul Rudd, Nick Jonas, Peter McDonald, Marcella Plunkett, Havana Rose Liu and Jack Reynor. BUZZ & ACCLAIM: The film premiered to rave reviews at this year’s Dublin International Film Festival where critics call it “a sure-fired crowd-pleaser” that “just might be the feel-good hit of the year!” Others say, “Paul Rudd delivers a career-best performance in this charmer” that’s both “hilarious and deeply moving!” SUMMER OF ICE CREAM, VOL 2: SHAKE NO. 8! Ranked the #1 Ice Cream Shop in Columbus in 2024, this is the perfect place to kick off our Summer of Ice Cream and grab a sweet treat after the show! Their menu features an array of traditional, specialty and vegan shakes, hot cocoa, and more! You can check out their full menu here: [https://www.shakeno8.com/menu.php](https://www.shakeno8.com/menu.php) PLAN: We’ll plan for a 7pm-ish showing and will meet in the lobby area about 20 minutes before the show. Once showtime is announced, advance ticket purchase is advised! Once you have yours, please list your seat number in the Comments section of this event. We'll head to nearby Shake No. 8 immediately following the show! Should be a fun one, Dan