This article constructs two robust controllers using sliding mode control (SMC) techniques. The ship-crane system is operated in the complicated condition in which the disturbances due to viscoelasticity of seawater and the flexibility of handling cable are fully taken into account. With two actuators composed of trolley-moving force and container-hoisting torque, the controllers 

We construct two controllers for floating container cranes based on the combination of feedback linearization, sliding mode, and proportional-derivative controls. The disturbances composed of viscoelasticity of sea water, elasticity of suspended wire rope, and sea-excited motions of ship are fully considered. The controllers simultaneously conduct four duties: tracking the trolley to reference, lifting the container to desired cable length, reducing the axial container oscillation and container swing.

Thí nghiệm mô hình hóa ảnh hưởng của các yếu tố cơ bản đến khả năng chống mài mòn của dầu Diesel

Đánh giá đặc tính bôi trơn nhiên liệu tàu thủy chứa hàm lượng lưu huỳnh thấp ở các điều kiện nhiệt độ làm việc khác nhau

Nghiên cứu ảnh hưởng của các yếu tố: hàm lượng lưu huỳnh, độ nhớt đến khả năng bôi trơn của nhiên liệu khi tàu hoạt động trong vùng kiểm soát nồng độ SOx trong khí thải.

Phương pháp nghiên cứu khả năng bôi trơn của dầu diesel tàu thủy bằng máy bốn bi tương đồng với phương pháp HFRR

Đánh giá ảnh hưởng của nhiên liệu hàm lượng lưu huỳnh thấp đến độ tin cậy của hệ thống nhiên liệu tàu thủy

This paper uses bootstrapped Data Envelopment Analysis (DEA) models to compare the technical efficiency of private and state-owned banks in Vietnam after the country’s accessing to the WTO in 2007 (2007-2012). It is found that state-owned banks are more efficient in terms of aggregate technical efficiency than private banks using both the intermediation and operating approaches. Using the Li (1996) test we find that the primary cause of this is greater capability of state-owned banks to access productive frontier than private banks.

This study investigates the impact of financial reforms, bank characteristics, and time trends on the performance of the Vietnamese banking sector under the assumption that ownership can result in a divergence of technologies utilised by different bank groups (including state - owned, private, and foreign banks), and the fact that these groups may respond differently to the same environmental variables .

In this paper, we design and implement a compact low noise block (LNB) for extended C-band Earth Station in satellite communication systems which converts the radio frequency (RF) signal from extended C-band (3.4 – 3.625 GHz) to a fixed 70 MHz intermediate frequency (IF) signal. The LNB consists of a three-stage low noise amplifier, a band pass filter, a frequency mixer, a local oscillator, IF amplifiers and IF filters. It is fabricated by Rogers RO4350B substrate (εr = 3.48, hsub = 0.762mm, tan δ = 0.0035).