Scott J Turner

Extraction of short-latency evoked potentials using a combination of wavelets and evolutionary algorithms.

Somatosensory evoked potentials, recorded at the spine or scalp of a patient, are contaminated by noise. It is common practice to use ensemble averaging to remove the noise, which usually requires a large number of responses to produce one averaged signal. In this paper a post-processing technique is shown which uses a combination of wavelets and evolutionary algorithms to produce a representative waveform with fewer responses. The most suitable wavelets and a set of weights are selected by an evolutionary algorithm to form a filter bank, which enhances the extraction of evoked potentials from noisy recordings.

Machine-to-machine communications energy efficiencies: the implications of different M2M communications specifications

The energy inefficiency of electronic devices is the major limiting factor for the adoption of these devices in Machine-to-Machine Communications (M2M)/Internet of Things (IoT). In order to address this, different emerging M2M communications standardisation organisations have proposed perceived energy efficient protocols. The essence of this paper is to discuss the energy implications of different M2M communication standards on the lifespan of the electronic devices that are to be used for the M2M communications.

Modelling, Simulation and Analysis Techniques in the Prediction of Non-Stationary Vibration Response of Hoist Ropes in Lift Systems

The paper presents the results of a study in which the non-stationary dynamic response of typical lift installations is investigated. A general approach to describe the dynamic behaviour of a vertical transport installation is presented. Subsequently, vibration models of a building elevator and a mine hoist installation are discussed. Perturbation and numerical techniques are discussed and applied to predict the non-stationary response of hoist ropes. It is shown that the method of multiple scales with non-linear scale as well as the method of characteristics can be employed to analyse a passage through resonance in a simple lift installation. Furthermore, the effectiveness of direct numerical integration of equations of motion is demonstrated in the case of a mine hoist installation.

Utilising SCM – MIMO Channel Model Based on V-BLAST Channel Coding in V2V Communication

Vehicular ad hoc networks VANETs has recently received significant attention in intelligent transport systems (ITS) research. It provides the driver with information regarding traffic and road conditions which is needed to reduce accidents, which will save many people’s lives. In Vehicle-to-vehicle V2V communication the high-speed mobility of the nodes is the challenge, which significantly affects the reliability of communication. In this paper the utilising of SCM-MIMO channel model, (which is based on V-BLAST channel coding) is present to evaluate the performance of the PHY layer in V2V communication. The simulation results observed that the SCM model can overcome the propagation issues such as path loss, multipath fading and shadowing loss. The simulation considered three different environments, high, medium and low disruptions in urban traffic.

Robotics within the teaching of problem-solving

Abstract This paper considers the experiences of teaching on a module where problem-solving is taught first, then programming. The main tools for the problem-solving part, alongside two problem-solving approaches, are tasks using Mindstorm (LEGO, Denmark) robot kits. This is being done as a foundation step before the syntax of a language (Java) is taught to enable a Graphical User Interface (GUI) emulation of a previous robot problem. Results of student evaluation and feedback will be presented and the use of two simulators will be considered.

Non-Linear Modal Interactions in a Suspension Rope System with Time-Varying Length

This paper focuses on the investigation of the autoparametric coupling effects and modal interactions in a suspension rope system with a time varying length. Equations of motion of a multi-degree-of-freedom discrete, non-stationary and non-linear model are presented and are used to analyze the dynamic response of an elevator suspension rope system under resonance conditions. The equations of motion involve quadratic and cubic non-linear terms which are responsible for the modal interaction between the lateral and longitudinal oscillations of the rope and the car motions. The model takes into account the periodic excitations caused by motion of the host structure. The results confirm that adverse responses may arise and internal autoparametric resonance phenomena may occur.

Design and evaluation of browser-to-browser video conferencing in WebRTC

This paper describes the Web Real-Time Communication (WebRTC) technology and the implementation of its clients and server. The main aim is to design and implement WebRTC video conferencing between browsers in real implementation using Chrome and (Wired & WiFi) of LAN & WAN networks. Also, an evaluation of CPU performance, bandwidth consumption and Quality of Experience (QoE) was achieved. Moreover, a signalling channel between browsers using the WebSocket protocol via Node.js platform has been created and executed. This paper will give web developer an opportunity to comprehend the WebRTC technology, as well as to understand how to design WebRTC video conferencing.

PREDICTING LEATHER HANDLE LIKE AN EXPERT BY ARTIFICIAL NEURAL NETWORKS

This study developed an artificial neural network model to predict the subjective assessment of leather handle by an expert using its measurable physical characteristics. A statistical method was applied to prune the inputs of the network and the “error band” conception was proposed during training.

Performance evaluation of QoS using SIP & IAX2 VVoIP protocols with CODECS

There has been a strong focus on the evaluation of Quality of Service (QoS) and multimedia transmission over protocols of internet protocol (IP). The main goal of this paper is to evaluate the performance of QoS in real implementation, also a comparison of an appropriate video and voice (CODECS) over IP schemes depending on the SIP and IAX2 protocols based on the Asterisk PBX server(s), an open source communication platform. The network was implemented within various private networks, such as Wire and Wi-Fi, which serves as a local exchange for placing various calls. Quality has been evaluated based on some QoS parameters such as bandwidth, jitter and delay to investigate the performance of different codecs in video and voice over IP (VVoIP) network. The VVoIP codecs used in the measurements are: G.711 (ulaw&alaw), GSM, G.722, Speex, H.263, H.264, H.261 and H.263P. Evaluation of performance results will give network Planners and Multimedia protocols developers an opportunity to select the codec for VVoIP performance enhancement, which can lead to improved customer satisfaction.

Automated test case generation from high-level logic requirements using model transformation techniques

It is not uncommon for industries to use natural language to represent high-level software requirement specifications. It is also not uncommon for these requirement specifications to be translated into design and used further for implementation and generation of test cases in the software engineering life-cycle. These requirements are often ambiguous, incorrect, and incomplete. Finding them late in the development lifecycle proves very expensive and lowers the productivity. This paper reports on the experience of applying model-based technologies from academia to a real-world problem domain in the aviation industry to improve the productivity. The paper focuses on the application of a model-based technique to automatically generate test cases to satisfy Modified Condition/Decision Coverage (MC/DC) from high-level logic requirements expressed in a Domain Specific Language (DSL).