Crane scheduling in container terminals is known as a difficult optimization problem that has become even more challenging in recent years with the proliferation of multi-gantry automated stacking cranes. In this paper we present an efficient algorithm solving a subproblem arising in this context, namely deciding the priority of cranes after transportation tasks have been assigned. We tackle th...

Habitat loss is one of the key factors underlying the decline of many waterbird species, including Siberian Crane (Grus leucogeranus), a threatened species worldwide. Wetlands are the primary stopover for many waterbirds and restoration of these wetlands involves both hydrological restoration and water resource management. To protect the stopover sites of Siberian Cranes, we collected Siberian ...

We propose a new shipboard crane configuration for offloading cargo in open seas. We show that the “Maryland Rigging” crane of ship’s configuration, used in association with a friction control mechanism, provides a very effective method for reducing load pendulation caused by the motion of the crane in the roll direction. The effectiveness of the control technique is obtained by comparing the p...

Abstract By the current research, a PID tuning procedure is developed to control of an overhead crane. To enable the crane to reach a desired position, a controller design strategy must be used. This work presents a simple and efficient enough approach to control of the overhead crane based on designing a PID controller. Ziegler-Nichols method is used to initiate gains setting for PID controlle...

In this paper it is shown a practical method with lets evaluate the full set of crane configurations that produce collisions between the construction environment and the crane and its load. The method is based on a sound mathematical formalism so the feasibility of the results is guaranteed. Moreover, a suitable application of the formalism is performed in this work by means of choosing a suita...

In this paper, a passivity-based control scheme is proposed for the two main translational axes of an overhead crane to provide an active damping of crane load oscillations. The decentralised control structure consists of independent axis controllers, which are adapted to the varying rope length using gain-scheduling techniques. The tracking capabilities concerning desired trajectories for the ...

Bu makalede, Türkiye’de yoksullukla mücadeleye yönelik sosyal politikalarda uygulanan yard?mlar ele al?nm??t?r. Yoksullukla mücadele politikalar? kapsam?nda öncelikle kavramsal anlamda yoksulluk ve türlerine yer verilmi?tir. politikalar yard?mlara ili?kin tarihsel sürece de?inilmi?tir. Makalede kapsam?ndaki yard?mlardaki hedef kitle, yard?mlarda kullan?lan kaynaklar?n da??l?m?, yard?m programla...

S ome years ago, there was a TV advert for the Guardian newspaper, which became an advertising classic. It showed a young man, short hair, tattoo, drainpipe trousers and bovver boots, pelting towards an old man ambling his way down the street. When the lout catches up, he grabs the old man and flings him down, clearly a vicious unprovoked assault. But then the camera moves back to show the whol...

In this paper, the effect of wind load on port portal crane is simulated by experimental method, and anti-wind anti-skid performance tested. This experiment an important method to study action mode force skid resistance crane, provides basis for evaluation wind-proof safety crane.

This project presents an experimental investigations into the development proportional integral derivative (PID) control schemes for active sway control of a gantry crane system. The main objective of controlling a gantry crane is to transport the load as fast as possible without causing any unnecessary swing at the final position. The proposed controller is used as a feedback control which is ...