The introduction of extended producer responsibility makes original equipment manufacturers formally responsible for take-back, recovery and reuse discarded products. One their key problems is to determine what extent return products must be disassembled which disposal options should applied. On a tactical management level, this involves anticipating like meeting (legislative) targets, limited secondary end markets investments in recycling infrastructure. In paper, comprehensive model...

The two primary functions of a warehouse include (1) temporary storage and protection goods (2) providing value added services such as fulfilment individual customer orders, packaging goods, after sales services, repairs, testing, inspection assembly. To perform the above functions, is divided into several functional areas reserve area, forward (order collation) area cross-docking. paper presents mathematical model heuristic algorithm that jointly determine product allocation to in well size...

The future of electrification Africa lies within off-grid generation via renewable energy (RE). Although many RE projects have started across the Sub-Sahara, especially public are seldom successful. This study engages directly (ethnographically) with local communities benefitting or expected to benefit from projects, implementing organizations and government. Despite differences in culture understanding, reasons for failure found be similar different countries: (i) political agenda, (ii)...

We consider a single depot and set of customers with known demands, each which must be picked up delivered at specified locations within given time windows. seek route schedule for vehicle capacity, minimizes the duration, i.e., difference between arrival departure depot. develop local search method this problem based on variable-depth search, similar to Lin-Kernighan algorithm traveling salesman problem. The consists two phases. In first phase, feasible is constructed; in second it...

Abstract We study the solution u ( x, t ) of Korteweg‐de Vries equation − 6 uu x + xxx = 0 with arbitrary initial conditions , 0) ), decaying sufficiently rapidly as |ξ|→∞. Using method inverse scattering transformation we analyse Gel'fand‐Levitan in all coordinate systems moving to right and give a complete rigorous description emergence solitons.

Due to its convolution nature, the Stieltjes integral equation can be diagonalized by Mellin transform. Several explicit resolvent kernels were obtained over years, all of type. The conditions on given function under which these are able solve equation, rather restrictive. Purpose this paper is - in form more general than has been done so far. In fact, we merely bestow upon same integrability as unknown function. To mild condition, construct a new kernel. For solutions obtained, derive...

This paper deals with a new strategy for the assignment of Stock Keeping Units (SKUs) to storage locations in warehouse, called Order Oriented Slotting (OOS). Given an empty set orders be picked and routing policy, OOS stores SKUs such way that total time needed pick all is minimised. Unlike Cube per Index (COI) slotting which item based on how frequently it without regard picking sequences, aims store items, appear together orders, close each other. can formulated as Integer Linear...

In many industries production facilities are used which process products in a batch-wise manner. Guided by research the aircraft industry, where of hardening synthetic parts was studied, we propose new control strategy for these types systems. Given availability information on few near future arrivals decides when to schedule job order minimize logistical costs. The fact that different cost structures can be incorporated, makes it valuable tool use practical situations business. potential is...

In a recent article, Tarnai and Gáspár used computer simulations to find thin coverings of square with up ten equal circles. We will give improved six eight circles new, covering eleven circles, found by the use simulated annealing. Furthermore, we present combinatorial method for constructing lower bounds optimal radius.

Theft and vandalism impede the sustainability of renewable energy (RE) development projects in Sub-Saharan Africa. Therefore, it is essential to explore where these crimes originate from, how they propagate can be counteracted. In our study, we analyze impact disturbances on implemented projects. We utilize a consumer clinic approach generate data that represents situation. define instigators practically (Government Inequality, Crime Survive, Sabotage) demarcate actions offenders into 4...

In this paper we consider a dynamic full truckload pickup and delivery problem with time-windows. Jobs arrive over time are offered in second-price auction. Individual vehicles bid on these jobs maintain schedule of the they have won. We propose pricing scheduling strategy based programming where not only direct costs job insertion taken into account, but also impact future opportunities. Simulation is used to evaluate benefits opportunities compared simple strategies various market...

In this paper we study the real-time scheduling of time-sensitive full truckload pickup-and-delivery jobs. The problem involves allocation jobs to a fixed set vehicles which might belong different collaborating transportation agencies. A recently proposed solution methodology for is use multi-agent system where shipper agents offer through sequential auctions and vehicle bid on these consider such both are using profit maximizing look-ahead strategies. Our main contribution that...

We consider a key issue in hinterland container navigation ports, such as Rotterdam and Antwerp, namely the barge handling problem: how to optimize alignment of terminal operations port. make major step solving problem for practical settings. Specifically, we restricted opening times terminals, unbalanced networks, presence sea vessels, closing containers. Consequently, at faces time dependency in: (1) waiting until start (2) itself. The concept profiles which introduced an earlier paper...

Renewable energy (RE) generation is expected to become the main source of in Sub-Saharan Africa (SSA) over next century. However, more often than not, sustainability aspect these projects a characteristic that not clearly defined terms implemented SSA. The rate at which fail creating negative impact towards full acceptance renewable technologies (RETs). aim this paper comprehensively explore reasons failures and provide recommendations sustainable management RE We accomplish by combining...