Between 2017 and 2019 an Excel workbook with macros became the specification of a dimensional-control system for small sawmills: Bluetooth caliper, mobile app and statistical analysis in the cloud. This article covers the method — four control points, nominal versus target, deviation charts — and the design decision that determines whether such a tool ever reaches a small company. No code, no plant data.
Read More →In 2019 I was first author of INFOR Technical Report No. 223: a survey of 68 small and mid-sized Chilean sawmills about their machinery and, above all, how they capture and use their data. This article walks through what we found — 79 % tracked lumber dimensions on paper forms — and why that diagnosis ended up as a software specification.
Read More →A COBOL plant system exported fragmented flat files every night and nobody could report on them. This post walks through the integration platform that turned those exports into a normalized relational model — idempotent ingestion, transactional boundaries, and a scheduling module built on top — and what it taught me about modernizing without a rewrite.
Read More →Minimizing total tardiness in a job shop is NP-hard, and real plants add precedence constraints that classical benchmarks ignore. This post explains how GRASP, VNS and ILS were combined into a hybrid engine, how the results were validated statistically, and — just as important — what the study does not claim.
Read More →Standard YOLO inference silently loses small objects when high-resolution drone images are downscaled to the model's input size. This post walks through how the AgriDrone Vision pipeline uses SAHI sliced inference and a COCO-based evaluation layer to make that trade-off measurable — and why the real deliverable is a georeferenced map, not a bounding box.
Read More →This is a publication that provides data management for data exploration in the Mars craters dataset. Selected dataset: marscrate_pds This data set provides information about the morphological features of the surface of Mars. It contains data about recorded latitude, longitude, circular diameter, depth of rim floor, other morphological information, and the number of layers of craters on Mars.
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