Figure 1. Sketch of the canopy crane operating in a forest showing the tower (a), jib (b), counterjib and counterweight (c), the operator's cab (d), and the gondola (e) attached to the hook. The radius and height of the jib are 82 and 52 m, respectively. T he uppermost forest canopy is a frontier ofscientific research (Erwin 1983). It is the primary interface between the atmosphere and the fore...

The paper studied a multi-machine and multi-task warehouse crane scheduling problem. The collision between adjacent cranes needs to be avoided in the scheduling problem. Considering the involved operation requirement and condition, a process simulation model was formulated to evaluate a candidate crane schedule through rehearsing the crane operation process. Based on the process simulation, an ...

BACKGROUND Video-assisted thoracoscopic surgery (VATS) pulmonary wedge resection has emerged as the standard treatment for primary spontaneous pneumothorax. Recently, single-port VATS has been introduced and is now widely performed. This study aimed to evaluate the outcomes of the Tower crane technique as novel technique using a 15-mm trocar and anchoring suture in primary spontaneous pneumotho...

This paper studies the simultaneous reshuffle and yard crane scheduling problem in the yard of container terminals, which is one of the key logistics problems affecting the operation efficiency in container terminals. Although the reshuffle scheduling problem has received many research attention due to its importance, the problem without considering yard crane is not very practical, which is be...

Abstract Tower cranes find wide use in construction works, ports and several loading unloading procedures met industry. A nonlinear optimal control approach is proposed for the dynamic model of 4-DOF underactuated tower crane. The robotic crane undergoes approximate linearization around a temporary operating point that recomputed at each time-step method. relies on Taylor series expansion assoc...

ABSTRAKTower Crane merupakan faktor penting di dalam proyek-proyek konstruksi bangunan bertingkat dengan sekala yang besar dan diharapkan pelaksanaan proyek tercapai. Penempatan Tower tepat akan menghasilkan produktivitas efisien meminimalisir biaya operasional Crane. Produktivitas didapatkan dari waktu siklus volume material diangkut. Selanjutnya pada skripsi ini bertujuan untuk menganalisis a...

Abstract Massive wind energy converters are becoming more popular in the market. However, such technologies troublesome to implement onshore due logistic issues and costly erection techniques. Hence, industry research have focused on producing lighter modular towers overcome these limitations. The Self‐Erecting Tower (SeT) is made from staves that assembled by an internal crane. This crane supp...

Concentrated solar power (CSP) plants are expansive facilities that require substantial inspection and maintenance. A fully automated inspection robot increases the efficiency of maintenance work, reduces operating and maintenance costs, and improves safety and work conditions for service technicians. This paper describes a climbing robot that is capable of performing inspection and maintenance...