The main characteristic of the pulled corn pickers is that they drawn in one pass separate ear of corn from the stalk and made it husking, while it achieves a different quality of work. Quality of collectors depends on a several factors: the condition of crops, defining of relevant parameters for the operation, technical accuracy and staff skills. When the relevant parameters are not well align...

This paper describes an approach to determine a layout for the order picking area in warehouses, such that the average travel distance for the order pickers is minimized. We give analytical formulas by which the average length of an order picking route can be calculated for two different routing policies. The optimal layout can be determined by using such formula as an objective function in a n...

The present study explored an experience in the city of Belo Horizonte, Brazil, which a community-based solid waste management was created by joining pickers’ cooperative; collective urban agroecology activists; alliance social actors, including university, non-governmental organizations (NGOs), and membership-based (MBOs); local community collaborative zero that integrates pickers. More specif...

Order picking is a key process in supply chains and determinant of business success many industries. still performed manually by human operators most companies; however, there are also increasingly more technologies available to automate order processes or support pickers. One concept that has not attracted much research attention so far hybrid where autonomous robots pickers work together ware...

dark and deep, but the shallow, sunlit edges are where most of the cichlids live. Brown or green Eretmodus algae scrapers, covered with blue spots, thrive among the breaking waves; the turbulent water pushes their rounded backs onto the rock surfaces instead of pulling them off. These fish nip algae off the rocks with their chisel-like teeth. Their neighbors the Tanganicodus insect pickers also...

This paper considers a parallel aisle warehouse, where order pickers can change aisles at the ends of every aisle and also at a cross aisle halfway along the aisles. An algorithm is presented that can find shortest order picking tours in this type of warehouses. The algorithm is applicable in warehouse situations with up to three aisle changing possibilities. Average tour length is compared for...

The fast-pick area of a warehouse is used to fill orders for the most popular items in a facility. In this paper, buffers are placed in each zone of the fast-pick area to allow pickers to work ahead. Heuristics are described to assign SKUs to the zones and then to sequence the orders for picking so that the full benefits of the buffers can be obtained. The performance of the system with the heu...

Social and spatial segregation structures in Latin America are perceived as processes for the selective concentration of social or demographic groups geographic sectors city. This voluntary forced creates poor, wealthy, marginal areas, leading to territory’s marginalization fragmentation, destroying symbolic territorial urban continuity. To understand behavior waste pickers a Mexican city, we s...

We analyze a well known type of puzzle in planar geometry: given a planar shape, it is required to find a cut that divides the shape into two identical parts (up to rotation and translation). Clearly not all shapes can be so dissected and for some shapes that appear in puzzles the cutting curve is quite surprising and difficult to find. In this paper we first analyze the inverse problem of asse...