Steel storage pallet racks are framed steel structures commonly used in the logistic field. According to European practice, they built with cold-formed profiles. Vertical and horizontal elements connected mechanical joints special for base connections. The design of these is usually performed by adopting ‘design testing’ approach. This procedure asks experimental characterization main component...

We consider in this paper a new lagrangean relaxation with clusters for the Manufacturer’s Pallet Loading Problem (MPLP). The relaxation is based on the MPLP formulated as a Maximum Independent Set Problem (MISP) and represented in a conflict graph that can be partitioned in clusters. The edges inter clusters are relaxed in a lagrangean fashion. Computational tests attain the optimality for som...

This paper describes work relating to the laser-based inspection of shoe uppers loaded into a pallet prior to the sewing operation. Shape modelling from scanned edge data is divided into two steps: significant point detection and curve fitting. Methods for identifying significant points such as knots and corner points are discussed, with examples given for a range of typical shoe component shap...

Currently hydrogen cyanide (HCN) is industrially produced in the Czech Republic (Lucebni zavody Draslovka Kolin) and is extensively used for Czech mill fumigation. Therefore we evaluated the potential of HCN fumigant for treatment of wooden transport packages (pallets). We tested the penetration of HCN trough wooden pallet materials using gas chromatography. The preliminary results on biologica...

Existing concept-color-emotion lexicons limit themselves to small sets of basic emotions and colors, which cannot capture the rich pallet of color terms that humans use in communication. In this paper we begin to address this problem by building a novel, color-emotion-concept association lexicon via crowdsourcing. This lexicon, which we call CLEX, has over 2,300 color terms, over 3,000 affect t...

Detecting and classifying defects are required to grade and sort pallet parts. Use of quality parts can extend the life cycle of pallets and can reduce long-term cost. An investigation has been carried out to detect and classify defects in yellow-poplar (Liriodendron tulipifera, L.) and red oak (Quercus rubra, L.) stringers using ultrasonic scanning. Data were collected for sound and unsound kn...