With the development of information technology, it has become increasingly important to use intelligent algorithms diagnose mechanical equipment faults based on vibration signals rolling bearings. However, with application high-performance sensors in Internet Things, complexity real-time classification multichannel, multidimensional sensor is increasing. In view need for methods fault diagnosis...

seismic base isolation are devices that used to limit the human and material damage caused by an earthquake. this devices diffuse the energy induced at the time of the earthquake before being transferred to the structure.the base isolated structures when subjected to the near-fault eathquakes which contain long-period velocity pulses that may coincide with the period of base isolated structures...

The tribological behaviour of the bearing surface in hip arthroplasty is greatly influenced by its surface roughness. During cemented hip arthroplasty, bone cement may contaminate the bearing surface. Hence, the aim of this study was to investigate the effect of cement polymerization on a highly cross-linked polyethylene(HCLP) bearing surface as any process influences the surface roughness of t...

In this paper we present an active exploration strategy for a mobile robot navigating in 3D. The aim is to control a moving robot that autonomously builds a visual feature map while at the same time optimises its localisation in this map. The technique chooses the most appropriate commands maximising the information gain between prior states and measurements, while performing 6DOF bearingonly S...

A technique for exploiting deterministic chaos through Logistic Map (with DC component) and a Cubic Map (with no DC component) in a new digital communication has been proposed and demonstrated in presence of additive white Gaussian noise (AWGN) by Monte Carlo simulations. Biterror (BER) graphs were computed in order to compare the performance of the different modulation schemes. The best perfor...

An autonomous mobile robot operating in an unknown indoor environment often needs to map the environment while localising within the map. Feature-based world models including line and point features are widely used by researchers. This paper presents a novel delayed classification algorithm to categorize these features using a recently developed high performance sonar ring within a Simultaneous...

Abstract Remotely sensed data such as satellite photos and radar images can be used to produce geological maps on arid regions, where the vegetation coverage does not have a significant effect. In central Tunisia, Jebel Meloussi area has unique features characteristic morphology (i.e. flat areas with dune fields in contrast hills of folded eroded stratigraphic sequences), which makes it an idea...

The power of Self-Organizing Maps (SOM) for the visualization of highdimensional data has been well recognized over the past decade. They map nonlinear statistical relationships among different variables of a high dimensional input data on a low dimensional network, preserving most of the topographic relationships from the input space. This paper presents an SOMbased multi-sensor diagnostic sys...

The antitumor properties of (E)-2-(fluoromethyl)dehydroornithine methyl ester (A-MFMO-ME) and of (E)-2-(fluoromethyl)dehydroornithine ethyl ester (A-MFMO-EE), the prodrugs of A-MFMO, an irreversible inhibitor of mammalian L-ornithine decarboxylase (ODC) 14 times more potent than a-difluoromethylornithine (DFMO) and equipotent to (2R,5R)-6-heptyne-2,5-diamine (MAP) in vitro, have been inves tiga...

The antitumor properties of (E)-2-(fluoromethyl)dehydroornithine methyl ester (delta-MFMO-ME) and of (E)-2-(fluoromethyl)dehydroornithine ethyl ester (delta-MFMO-EE), the prodrugs of delta-MFMO, an irreversible inhibitor of mammalian L-ornithine decarboxylase (ODC) 14 times more potent than alpha-difluoromethylornithine (DFMO) and equipotent to (2R,5R)-6-heptyne-2,5-diamine (MAP) in vitro, have...