Arts & Crafts Shows

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.

JOINING THE EVENT Please join the event through the Sketchy Collective international group. The Sarajevo sub-group is temporary and was created to make our group more visible to people in Sarajevo. You can find the link to the same event in the international group here: https://www.meetup.com/sketchy-collective-international/events/314735747/?eventOrigin=group_events_list HOW TO FIND US We’re meeting in the park around Liberation Square (Trg oslobođenja) on Thursday, 28.05, at 18:00 (no problem if you’re slightly late). Just look for the people with sketchbooks :) You can also follow us on Instagram - we’ll post some stories just before the meetup starts to help you locate us more easily in the park. \*\*\* HOW IT WORKS At each meetup, attendees take turns modeling for quick 10-minute sketch sessions. One person poses while everyone else sketches, then we rotate. \*\*\* WHAT TO BRING Pencils and paper (or any sketching tools you prefer). \*\*\* No fees, no pressure. The only thing we ask is that everyone takes a turn posing for the group. You can sit in whatever position feels comfortable - the 10 minutes go by quickly! Draw as much as you like, skip a round if you’re tired or just want to chat, and leave whenever it suits you. The event continues as long as there’s interest. \*\*\* STAYING CONNECTED We have a WhatsApp group for staying in touch and sharing updates. Ask the organizer to add you to the WhatsApp group during the meetup.

HOW TO FIND US We’re meeting in the park around Liberation Square (Trg oslobođenja) on Thursday, 28.05, at 18:00 (no problem if you’re slightly late). Just look for the people with sketchbooks :) You can also follow us on Instagram - we’ll post some stories just before the meetup starts to help you locate us more easily in the park. Please note that the event starts at 18:00 local Sarajevo time (GMT+2). Meetup.com may display an incorrect time because the international group’s location is set to Finland, which is in a different time zone. \*\*\* HOW IT WORKS At each meetup, attendees take turns modeling for quick 10-minute sketch sessions. One person poses while everyone else sketches, then we rotate. \*\*\* WHAT TO BRING Pencils and paper (or any sketching tools you prefer). \*\*\* No fees, no pressure. The only thing we ask is that everyone takes a turn posing for the group. You can sit in whatever position feels comfortable - the 10 minutes go by quickly! Draw as much as you like, skip a round if you’re tired or just want to chat, and leave whenever it suits you. The event continues as long as there’s interest. \*\*\* STAYING CONNECTED We have a WhatsApp group for staying in touch and sharing updates. Ask the organizer to add you to the WhatsApp group during the meetup.

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.

**Let’s kick off our very first CBUS Maker Meetup!** Whether you are looking to carve out dedicated creative time, wanting to get a lingering project across the finish line, or just looking to chat with fellow local makers—this is the space for you. 🧵 **What to Bring** Bring any art or craft project you are currently working on, as long as it is portable and quiet. Think: * **Yarn & Thread:** Knitting, crochet, embroidery, cross-stitch, hand-sewing, mending. * **Paper & Sketching:** Sketchbooks, adult coloring books, watercolors, bullet journaling. * **Digital:** Tablets, iPad drawing, laptop writing/design. * *Please note: Because we are meeting in a shared public space, no power tools, sewing machines, or high-odor materials (like strong solvents or spray glues), please!* **📍 Where to Find Us** * We will be meeting at **Columbus Metropolitan Library - Karl Road Branch** in **Meeting Room 1**. Room is reserved under **CBUS Maker Meetup.** **⏱️ Timeline** * **1:00 PM:** Arrive, grab a seat, get settled, and do a quick round of introductions so we can see what everyone is working on. * **1:15 PM - 3:00 PM:** Open maker time! Chat, craft, relax, and swap creative ideas. **⚠️ A Note on RSVPs** Space for this first meetup is strictly limited to 10 spots. If your plans change and you can no longer attend, please update your RSVP to "Not Going" as soon as possible so someone on the waitlist can grab your spot. We ask that you try to give at least 48 hours' notice if you need to cancel. *** **We can't wait to meet you and see what you're making! All skill levels welcome.**

Now in its 26th year, [The Creekside Blues & Jazz Festival](https://www.creeksidebluesandjazz.com/), in Gahanna, gathers world famous groups and performers at a single place for you to enjoy the best Blues & Jazz in Ohio. *SATURDAY NIGHT features: The Urban Jazz Coalition with Special Guest Brian Simpson, North Mississippi Allstars, The Deal Breakers & More.* The three-day cultural celebration features musicians on 3 stages, local food trucks and beverage stations, treats, artisans, and more. **Tickets are $15 for adults online.** Link to purchase tickets: [Creekside Blues & Jazz Festival Tickets](https://tickets.creeksidebluesandjazz.com/e/2026-creekside-blues-jazz-festival). $20 at the door. Military are free. WHAT: Here's the festival [EVENT MAP](https://www.creeksidebluesandjazz.com/Event-Map/). Also, here's the [SCHEDULE](https://www.creeksidebluesandjazz.com/Schedule/) map to help you determine who to see. \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* **Parking -** The Creekside Parking Garage will be open throughout the festival weekend. Entrance is located near the intersection of Mill and North Streets; accessible only by traveling south on Mill Street. **Event parking rate is $5 and collected at entrance to garage. Cash ONLY is accepted at garage entrance for parking.** Although off street parking in the Creekside District is permitted, it is very limited and not recommended. **Shuttle Service** pickup will be at the following location: [AEP Ohio 700 Morrison Rd., Gahanna, OH](https://goo.gl/maps/K9GgvgEdxCHaXsKDA) **Shuttle Service Hours:** Saturday: 1 PM - 12 AM **BRING**: *Be sure to bring a **chair** since there is limited available seating. Also $ or paycard for food and drink.*

**Get your creative flow going with a Sunday Afternoon Maker Meetup!** Whether you are looking to carve out dedicated creative time, wanting to get a lingering project across the finish line, or just looking to chat with fellow local makers—this is the space for you. 🧵 **What to Bring** Bring any art or craft project you are currently working on, as long as it is portable and quiet. Think: * **Yarn & Thread:** Knitting, crochet, embroidery, cross-stitch, hand-sewing, mending. * **Paper & Sketching:** Sketchbooks, adult coloring books, watercolors, bullet journaling. * **Digital:** Tablets, iPad drawing, laptop writing/design. * *Please note: Because we are meeting in a shared public space, no power tools, sewing machines, or high-odor materials (like strong solvents or spray glues), please!* **📍 Where to Find Us** * We will be meeting at **Columbus Metropolitan Library - Martin Luther King Branch** in **Meeting Room 1**. Room is reserved under **CBUS Maker Meetup.** **⏱️ Timeline** * **1:00 PM:** Arrive, grab a seat, get settled, and do a quick round of introductions so we can see what everyone is working on. * **1:15 PM - 3:00 PM:** Open maker time! Chat, craft, relax, and swap creative ideas. **⚠️ A Note on RSVPs** Space for this first meetup is strictly limited to 10 spots. If your plans change and you can no longer attend, please update your RSVP to "Not Going" as soon as possible so someone on the waitlist can grab your spot. We ask that you try to give at least 48 hours' notice if you need to cancel. *** **We can't wait to meet you and see what you're making! All skill levels welcome.**

# **Saturday, June 20, 2026** **Beginners’ Session 1:30 to 2:00 PM** **Dancing 2:00 to 4:30 PM** **Band: Gem City Revelers** **Caller: David Mould** **You are invited to join us for dinner at Olive and Lime (in the church’s back parking lot) after the dance.** **Location: First Unitarian Universalist Church, 93 W. Weisheimer Road, Columbus, OH 43214.** **Cost is $10 for adults, $5 ages 12-25.** **New to dancing? A beginners’ session, from 1:30 to 2:00 PM, will get you started. You will learn some basic figures that will be repeated in the afternoon’s dances. All dances will be taught and no partner is needed. Dancing is from 2:00 to 4:30 PM.** **Please bring your own refillable water bottle.** **All Soles Dance upcoming dance dates are, as follows:** **July 25, 2026–Summer Potluck and Dance** **No August Dance** **September 26, 2026** **October 17, 2026** **November 21, 2026** **December 19, 2026** **Visit our website at: https://firstuucolumbus.org/connection/all-soles/**

Let's mix and boogie! We'll start with social time over dinner/appetizers/drinks from 6:00-8:00pm. Then we'll get down with a live band [Shucking Bubba Deluxe](http://www.shuckingbubba.com/). COVER CHARGE: $10.00 (cash) SBD: A great danceable cover band playing popular genres of music - funk, classic rock, pop & club/dance. [Harry Buffalo](http://www.harrybuffalo.com/locations/westerville/) has a wide selection of quality appetizers and entrees. Harry Buffalo seating is first come/first serve this evening. We need a few folks to be there by 6:00pm or so to secure a table on the patio. DRESS: Late Summer Patio (picnic table friendly) BAD WEATHER CANCEL (usually by 4pm) PARKING: lots near restaurant and down the street. Do not park at Taco Bell.