In the previous study, several researchers had developed circular and square crash box designs to enhance energy absorption. this honeycomb filled is investigated by varying cell dimension. Honeycomb selected due lightweight high strength weight ratio. The modelling was carried out using finite element method with a frontal oblique load model. dimensions vary five models, which are 0%, 25%, 50%...

Abstract This work investigates the impact of infill pattern structure on crashworthy performance and deformation history 3D-printed tubes subjected to a quasi-static axial compression load. The proposed were made from polylactic acid (PLA) using 3D printing technique. Five structures adapted, i.e. circular, square, triangle, zigzag cross patterns with 50% density. analysis was carried out by a...

The denominator polynomial of a given causal stable :-domain transfer function is modified so that the magnitude of the frequency response remains the same. This simple modification permits an infinite number of decompositions of the modified denominator into a mirror-image polynomial (MIP) and an anti-mirror-image polynomial (AMIP). Two types of Discrete Reactance Functions (DRF) are construct...

A systematic approach for the design of Switched Current (SI) ladder filters is described. The specifications of the filter in z-domain are used to obtain continued fraction expansions (CFE). Signal Flow Graphs (SFG) of each row of the expansion is derived and then these SFG are directly transformed into switched current structures (integrators and amplifiers). The SI blocks thus obtained are c...

A magnitude response preserving modification of the denominator polynomial of a causal and stable digital transfer function leads to an infinite number of decompositions into a mirror-image polynomial (MIP) and an anti-mirror-image polynomial (AMIP). Properties and identifications of the MIP and AMIP are given. The identifications of Schussler and Davis, and the line spectral frequency formulat...

In this study, a combined electro-(Fenton/coagulation/flotation) (EF/EC/El) process was studied via degradation of Disperse Orange 25 (DO25) organic dye as a case study. Influences of seven operational parameters on the dye removal efficiency (DR%) were measured: initial pH of the solution (pH0), applied voltage between the anode and cathode (V), initial ferrous ion concentration (CFe), initial...

During the chronological ageing process epidermal skin stem cells become less effective, meaning that the renewing and repairing activity of the epidermis is reduced. Moreover, fewer elastic fibres are synthesised, thereby inducing a progressive loss of skin elasticity. The standardised, COSMOS certified Cyanidium caldarium red algae extract, unique in its capability to produce gamma aminobutyr...

Automatic and robust object detection in remote sensing images is of vital significance real-world applications such as land resource management disaster rescue. However, poor performance arises when the state-of-the-art natural image algorithms are directly applied to images, which largely results from variations scale, aspect ratio, indistinguishable appearances, complex background scenario. ...