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An important challenge to any image pixels classification system is to correctly assign each pixel to its proper class without blurring edges delimiting neighboring regions. In this paper, we present an aerial image mapping approach that advantageously combines unsupervised segmentation with a supervised Markov model based recognition. The originality of the proposed system carries on three concepts:...
This chapter analyzes LD-CAST – a business cooperation framework using business processes and semantic technologies for supporting local development by means of transnational activities. The system, based on Service Oriented Architecture and developed for a European STREP project, had multiple stakeholders, involving the necessity to describe various views, on various levels of abstraction. Both classical...
Applying distributed system concept with wireless communication in sensor and actuator network for process automation applications is led to developing autonomous wireless sensor actuator network. One of the requirements for this development is determining the sample number. Because of the hardware and power supply limitations, wireless sensors are applied to discrete control system. In wireless sensor...
Wireless communications using microwaves are increasingly important, e.g. Wi-Fi. Performance is a very relevant issue, resulting in more reliable and efficient communications. Laboratory measurements are made about several performance aspects of Wi-Fi (IEEE 802.11 a, b, g) point-to-point links using two types of access points from Enterasys Networks (RBT-4102 and RBTR2). Through OSI levels 3, 4 and...
The wireless LAN based communication system of subway consist of a network of mobile nodes moving together in high velocity. We propose the idea of the new handover scheme based on mobile IP. The station (STA) taking the access point (AP) as the gateway, implements the multiple-hop subnet mobile IP by cooperation of the home agent, the foreign agent, interior network routing agent and reused tunneling...
This paper describes the parallelization process of the code PROMES. The parallel code, called PROMESPAR, has been carried out under a distributed platform (cluster of PCs) and using Message Passing Interface (MPI) communication subroutines.
High-speed interconnects like Dolphin’s SCI and DX fulfil even high communication performance requirements. One of the prerequisites, though, is that the communication software must be either based on IP sockets or specifically adapted to the interconnect. Software written directly for Ethernet, arguably the most widespread interconnect today, cannot profit from this fast hardware. In this article,...
Dyslipidemia is considered to be one of the main heart risk factors, affecting the endothelial vascular function, which can be non-invasively investigated by ultrasound flow-mediated dilation (US-FMD). However, US-FMD comes at a high-cost and is operator-dependent. In this paper, the effect of dyslipidemia on the photoplethysmogram (PPG) signal recorded from collateral index fingers is investigated...
We study a method for introducing the general solution of the two-dimensional Electrical Impedance Equation, based onto Quaternionic Analysis and Pseudoanalytic Function Theory, for the case when the electrical conductivity can be represented as a separable-variables function only once derivable. We also discuss the contribution of this results into the field of Electrical Impedance Tomography.
Widefield Surface Plasmon Resonance (WSPR) microscope was used to investigate cell surface interactions under two different culture conditions: bone cells cultured on SPR substrate with transforming growth factor β3 (TGF-β3) and without as control. Trypsinisation was carried out in order to investigate its effect on cell detachment, in the presence of TGF-β3, HCl or BSA/HCl solutions. Trypsin was...
A newly developed Widefield Surface Plasmon Resonance (WSPR) Microscope was used to investigate the morphology of MG63 bone cells and their interfacial interactions with ECM proteins. This allowed detailed imaging of cell surface coupling at lateral resolution down to ∼ 500 nm. In this work, bone repair was investigated and modulated by different stimulus including growth factors. TGF-β3 is a cytokine...
Rehabilitation of the ability to speak in a natural sounding voice, for patients who suffer larynx and voice box deficiencies, has long been a dream for both patients and researchers working in this field. Removal of, or damage to, the voice box in a surgical operation such as laryngectomy, affects the pitch generation mechanism of the human voice production system. Post-laryngectomised patients thus...
Reported is a study of applying nanofabrication technology to improve the surface roughness of micro glass pipettes to achieve giga ohm seal resistance in patch clamping processes. The surface roughness of pipette tips was first measured by 3D reconstruction of pipette tips using stereo imaging technique based on high resolution SEM images. Both the SEM images and the reconstructed images show that...
Several factors influence the accuracy of drilled holes. The most obvious ones are the cutting conditions (cutting speed and feed rate) and cutting configurations (tool material, diameter, and geometry). As such, most previous studies have concentrated on these factors. However, in CNC drilling operations, choosing to use canned cycles may have significant effect on drilled hole quality. The objective...
A fabrication process of stainless steel micro components from metallic powder is reported. The process consists of two stages. In the first stage, high quality SU-8 master moulds and their negative replicas from soft moulds are produced using photolithography and soft moulding techniques respectively. The second stage includes preparation of stainless steel slurry, filling the soft mould, obtaining...
Graded components are a resource-conserving alternative to today’s composite materials. Functional gradation means a steady gradient of the property values through the three spatial dimensions of the component. At the present time there is no methodology to specify the graded properties in the component description. Its starting point takes place in the conventional CAD-Models. The component geometry...
Several interactions occur between the constituents of effluents within a pipeline (fluid, particles, and the pipeline interface). These interactions are birthed from their constant motion in one point in a pipeline relative to another point within the same pipeline. These constant motions expressed through various Drift Flux models are amenable to multi-parametric analysis. This particular exercise...
Preventive maintenance (PM) is often scheduled in order to minimize the maintenance cost or to comply with production planning requirements. However, maintenance interruptions affect process time variability and resource utilization, thus causing adverse effects on the operational performance of the manufacturing system such as Work in Process (WIP) and cycle time. In this paper some approximate queueing...
In this chapter, the numerical prediction of stability margin in thin wall machining is introduced. The Nyquist criterion is applied to the stability model presented by Adetoro, while a newly discovered damping prediction approach is presented, which when applied to the FEM and Fourier approach presented by Adetoro, would allow the prediction of stability margins without the need for experimentally...
This chapter introduces two risk management tools targeted for SMEs in their Enterprise Resource Planning (ERP) adoption projects. The purpose is to identify and assess the main risks in the ERP projects through the case study of two manufacturing SMEs. By using company-specific risk analysis method (RAM), the critical risks of the ERP projects are identified and assessed. Then, by using characteristics...
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