Rail mounted gantry crane (RMGC) scheduling is important in reducing makespan of handling operation and improving container handling efficiency. In this paper, we present an RMGC scheduling optimization model, whose objective is to determine an optimization handling sequence in order to minimize RMGC idle load time in handling tasks. An ant colony optimization is proposed to obtain near optimal...

Exception handling is a powerful mechanisms for dealing with failures at runtime. It simplifies the development of robust programs by allowing the programmer to implement recovery actions and tolerate non-fatal errors. Yet, exception handling is difficult to get right! The complexity of correct exception handling is a major cause for incorrect exception handling. It is therefore important to re...

the effects of dietary nucleotide (nt) were evaluated on some serum biochemical parameters and acute stress responses of the catfish (pangasianodon hypophthalmus). five experimental diets including 0, 0.25, 0.5, 0.75, and 1% nt were supplied to catfish fry for 10 weeks. at the end of the experiment, fish fed the control and 1% nt diets were subjected to handling and crowding stress. the results...

chemotherapy medication errors may lead to potentially harmful consequences while most of them could be preventable. this study aims to determine the incidence and type of drug handling and administration errors among the nurses and to identify possible contributing factors. setting of the study was a teaching hospital affiliated to shahid beheshti university of medical sciences, tehran, iran. ...

Abstract Handling robots are widely used today, and non-fixed handling is more effective than fixed in some specific scenarios. The of can increase the load reduce precise positioning process grabbing object, but velocity relatively slow for stability object. In addition, it needs to consider friction reaction force constraints on This paper proposes a high-velocity method robot. First, deduces...

The continuity and accuracy of real-time (RT) global satellite navigation system (GNSS) sensing atmospheric water vapor can be seriously affected by a lack connectivity. To mitigate this issue, method has been developed that utilizes the International GNSS Service (IGS) ultra-rapid (IGU) orbit an established RT service (RTS) for clock correction. This ensures estimation even when communication ...

the dramatic increasing of sea-freight container transportations and the developing trend for using containers in the multimodal handling systems through the sea, rail, road and land in the present market cause some challenges to the general managers of container terminals such as increasing demand, competitive situation, new investments and expansion of new activities and the need to use new m...

common pistachio psylla, agonoscena pistaciae burckardt and lauterer (hemiptera: aphalaridae) is one of the economical pest among the pistachio orchards. the adonis' ladybird, hippodamia variegata (goeze) (col: coccinellidae) is one of the most prominent coccinellid predator in pistachio orchards. it is omnivorous and feed on aphids and psylla. functional response studies using a suitable ...

Time-varying matrix inversion is an important field of research, and lots research achievements have been obtained. In the process solving time-varying inversion, disturbances inevitably exist, thus, a model that can suppress disturbance while problem required. this paper, advanced continuous-time recurrent neural network (RNN) based on double integral RNN design formula proposed for continuous...