Research posters

Research posters published by Slop University.

All research outputs of the University are published open access under CC BY 4.0, with persistent identifiers minted by the Office of Research Outputs.

Published outputs

Poster

Six Bars, Two Things

Petra Umbile, Ronja Oyelaran, Iben Chikere · August 2026 · doi:10.5555/slop.cccmhn

A research poster from the School of Emergent Priorities factor-analyses the six-pillar post-lesson feedback form used across a national driving-school chain, drawing on 9,140 learner ratings of 268 instructors at 41 branches between 2023 and 2025. Two factors are retained under every criterion tested: all six pillars load above .55 on the first, only route mix and test-readiness carry a second loading, and inter-pillar correlations run from .62 to .83. The lowest of an instructor's six pillar scores, against which the chain writes each quarterly development plan, changes identity across split halves of the same instructor's ratings for 61% of them.

Poster

Nothing Happens to a Card at Thirty Dollars

Joost Nwosu, Ingeborg Nwachukwu, Thandiwe Solberg · August 2026 · doi:10.5555/slop.lyel59

A research poster from the School of Continuous Improvement tests the density of keyed catalogue values either side of the $30 premium-tier line in a national trading-card chain's trade-in schedule, across 61,482 lines at 19 stores over 22 months. Lines keyed at $30.00-$30.99 run 2.70 times the fitted density while the two dollars below run 0.40 times, with placebo cutoffs at $25 and $35 returning nothing; the same cards' later resale prices pass smoothly through the line, and the estimated effect of crossing it on resale margin is indistinguishable from zero. Each store's Premium Tier Share, the measure its quarterly stock-quality ranking is built from, tracks its excess mass at the line rather than its realised margin.

Poster

The Neighbour Was Never the Problem

Fenna Okoro, Solveig Adeyemi · August 2026 · doi:10.5555/slop.c4aizu

A research poster from the School of Emergent Priorities re-codes twelve years of one apartment block's noise-complaint tickets by structural bay rather than by named resident, finding a single bay behind 144 of 308 tickets logged since 2014 across five separate resident turnovers. A 2025 renovation exposed a mis-poured slab joint in that bay, confirming what the strata register's per-resident field had never been built to see.

Poster

What the Machine Hands Back

Anneke Tolan, Solveig Adeyemi, Marit Osayande · August 2026 · doi:10.5555/slop.ht2kag

A research poster from the School of Emergent Priorities observes 148,304 drink containers presented at 26 container-deposit return points, across 312 observation sessions and 1,986 visits, coding every presentation to its outcome at the machine. An estimated 8.9 per cent leave uncounted (95% CI 7.6 to 10.3); site-level refusal runs from 1.9 to 31.4 per cent and concentrates at points whose bins stood at or above the stop-fill threshold in more than a quarter of sessions. Recomputing the scheme's under-served test on containers presented rather than counted moves 9 of the 26 points across its own threshold and reorders 6 of the 10 suburbs on the siting shortlist.

Poster

The Record Belongs to the Kart

Anouk Mensah, Lindiwe Achterberg · August 2026 · doi:10.5555/slop.wf05im

A research poster from the School of Emergent Priorities partitions best-lap variance across 22 indoor karting venues, 528 karts and 24,880 driver-stints, fitting driver, kart and session as crossed random effects. Kart identity accounts for an estimated 31 per cent of the variance (95% CI 26 to 36) against 44 per cent for the driver; at 19 of the 22 venues the standing record was set in a kart now in its fleet's quickest quartile, and re-ranking on kart-adjusted times moves the printed podium in roughly two sessions in five. No venue records a kart identifier beside a posted record, so the adjustment is unavailable to anyone reading the board.

Poster

Quiet, Not Cleared

Renke Sabel, Solveig Adeyemi · August 2026 · doi:10.5555/slop.677ori

A research poster from the School of Continuous Improvement matches 1,142 school instrument hires across three terms and three depots, pairing 214 families who successfully disputed an automated damage-match flag with matched never-flagged families borrowing the same instrument type at the same rate. Re-flag odds at the next hire are statistically indistinguishable between the two groups overall, except for brass instruments, which re-flag at more than double the matched baseline rate, a gap traced to the scanner's own confidence threshold rather than to family history.

Poster

Signed, Not Checked

Dagny Okafor, Joost Nwosu · August 2026 · doi:10.5555/slop.2p4hjg

A research poster from the School of Continuous Improvement matches 1,240 signed-off shift-supervisor performance reviews across 68 stores of a retail chain against supervisors' own pre-review self-assessment scores and a composite record score built from the store's own till-accuracy and roster-reliability logs. Signed-off ratings correlate strongly with self-assessment (r = 0.87) and weakly with the independently logged record (r = 0.21), and the gap between the self-assessment and the record widens with supervisor tenure, from 2 points under six months to 23 points at five-plus years.

Poster

Still Counted, Not Coming Back

Marek Solheim, Petra Umbile · August 2026 · doi:10.5555/slop.dpx52w

A research poster from the School of Emergent Priorities sorts a nine-site café chain's loyalty-app accounts into a Dormancy Quadrant, reading weeks since last visit against weeks since last points redemption across 214 accounts. Fifty-nine per cent of the accounts the chain's own active-member report lists as active sit in the quadrant's forgotten cell, logging neither a visit nor a redemption in eight or more weeks.

Poster

The Return Visit That Counts

Thandiwe Solberg, Solveig Adeyemi · August 2026 · doi:10.5555/slop.v62ibf

A research poster from the School of Continuous Improvement surveys residential pest-control technicians on how they classify borderline warranty callouts against their own company's ninety-day guarantee, finding technician judgement departs furthest from the contract's wording exactly where that wording is least defined.

Poster

Wrong for the Right Reasons

Petra Umbile, Lindiwe Achterberg · August 2026 · doi:10.5555/slop.nki2u5

A research poster from the School of Emergent Priorities classifies bottle-shop staff independently by handheld ID-scanner override rate and an unannounced covert compliance audit, finding the two measures only weakly related. A two-by-two framework recovers a failure quadrant the chain's own single override-risk dashboard cannot see, at both the staff and the store level.

Poster

Credited to the Sign

Iben Chikere, Anouk Mensah · August 2026 · doi:10.5555/slop.cn001w

A research poster from the School of Emergent Priorities tracks take-up at 14 street pantries in the week before and after a hand-lettered "take only what you need" note appears, finding the flagged category's take-rate falls sharply where a restock lands the same week and barely moves where it doesn't.

Poster

The Hint That Didn't Count

Petra Umbile, Anneke Tolan · August 2026 · doi:10.5555/slop.4mbtqr

A research poster from the School of Emergent Priorities interviews 34 game masters across nine venues of an escape-room franchise about the hints they give without logging a console entry, and sets an independent video audit against the chain's own hint-count leaderboard. Recalculated rankings that include the coded unlogged nudges reorder three of the chain's four flagship rooms.