School of Computer Science and Informatics
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Item Open Access Combining state detection with knowledge transfer for constrained multi-objective optimization(IEEE, 0202-04-18) Zheng, Jinhua; Yang, Kaixi; Zou, Juan; Yang, ShengxiangThe main challenge in studying constrained multi-objective optimization problems (CMOPs) is reasonably balancing convergence, diversity, and feasibility. One of the most successful solutions to this challenge is the co-evolutionary frame-work, an algorithm in which multiple populations cooperate and complement each other, with different but interdependent populations addressing different but related problems. However, the effectiveness of existing algorithms for information exchange between various populations is not apparent. This paper proposes a new algorithm named SDKT using population state detection and knowledge transfer. The method has dual stages (i.e., knowledge acquisition and knowledge reception) and dual populations. Specifically, by restarting the strategy, these two populations (i.e., mainPop and auxPop) first explore more feasible regions with and without constraints. Then, in the knowledge receiving stage, ma i nPop and auxPop provide effective information to promote each other's approach to constrained PF (CPF) and unconstrained PF (UPF), respectively. Extensive experiments on three well-known test suites and three real-world problem studies fully demonstrate that SDKT is more competitive than five state-of-the-art constrained multi-objective evolutionary algorithms.Item Open Access A modular solution to the design of dedicated laboratory equipment(Sira Ltd, 1980-03) Goodyer, E. N.Microprocessor based instrumentation can be placed in two groups: either the instrument is intended for mass production, or its one of a small production batch of between 1 and 100 units. The project planning of the development of any microprocessor-based instrument is primarily determined by the category to which the final product belongs.Item Open Access Integration and testing of microprocessor based systems.(Sira-WSL (Warren Springs Laboratories), 1980-04) Goodyer, E. N.The process of integration is the combining of the independently tested software and hardware modules to produce a prototype system. Invariably the integrated system does not work, precipitating the pointed index finger phase of design procedure whereby the hardware and software engineers simultaneously raise their index figures to each other and exclaim "It is your fault". - they are course both correct.Item Open Access A Microprocessor Gas Flow Computer(IMEKO - Institute of Measurement and Control, International Measurement Confederation, International Federation of Automatic Control, 1980-11) Goodyer, E. N.This presentation discusses some of the problems in accurate measurement of the flow rate of hydrocarbon gas; briefly reviews the limitations of analogue solutions; and finally presents a viable solution that employs a microprocessor-based gas flow computer.Item Metadata only MICROPROCESSOR-BASED GAS FLOW COMPUTER(Institute of Measurement & Control Application of Microprocess in Devices for Instrumentation and Automatic Control, 1980-11-18) Goodyer, E. N.The paper discusses the problems in accurate measurement of the flow rate of hydrocarbon gas and presents a viable solution that employs a microprocessor - based gas flow computer. The intended application of this instrument is the custody transfer of natural gas. The computational accuracy is plus or minus 0. 05%Item Open Access NSC800 Tested(Microforcast, 1981-02) Goodyer, E. N.; Strang, W.NSC800 CMOS Microprocessor evaluated by SiraItem Metadata only A comparative study of the INTEL 8086, ZILOG Z8000 and MOTOROLA MC68000(Sira Ltd, 1982-03) Goodyer, E. N.; Neylan, P.An comparative study of the Motorola 68000, Zilog Z8000 and Intel 8086Item Metadata only GaAs FETs at Frequencies above 20GHz(Plessey, 1982-10) Oxley, C. H.; Forrest, P.; Bennett, R. H.Item Metadata only Application Of Low Power Microtechnology To Process Instrumentation: Some Case Examples(Low Power Microprocessor Systems IEE Coloqium, 1983) Goodyer, E. N.This paper, using some product examples in the field of process instrumentation, seeks to examine some of the problems that can arise when applying CMOS technology, and offers some practical solutions to these problems. Briefly mentioned are some of the reasons why CMOS is a desirable technology for process instrumentation applications. The specific problems discussed are speed, power supply spikes and 'latch up'. The overall conclusion is that CMOS technology can be successfully applied in process instrumentation, but the designer who is more familiar with NMOS and TTL devices should take into account the different characteristics of CMOS.Item Metadata only Travelling Wave GaAs Transistors(Allen Clarke Research Centre, 1984-06) Holden, A. J.; Oxley, C. H.Item Metadata only Study of a travelling wave GaAs FET(Plessey Research Caswell, 1985-03) Oxley, C. H.; Holden, A.; Davies, I.; Medhurst, P.; Wheeldon, B.Item Metadata only Microstrip Balun Circuit(patent, 1985-04) Oxley, C. H.Item Metadata only Millimetric wave gallium arsenide fets(Allen Clarke Research Centre, 1985-06) Oxley, C. H.Item Metadata only Optical Sensors for Vehicles(1987-05) Goodyer, E. N.Item Metadata only Novel sensors for measuring fuel flow and level.(IEE, 1987-06) Goodyer, E. N.Item Open Access A Microprocessor Controlled Level Gauge For Use In Petrol Road Tankers(Measurements we Couldn't Make Without a Micro, IEE Colloquium, 1988-05-17) Goodyer, E. N.This paper discusses the design of a microprocessor controlled level gauge for use in the storage tanks of petrol road tankers . The sensor is based on an original concept used by Marconi for measuring the electrolyte level in batteries. Thls basic design was refined and improved upon by Sira and Drum Instrumentation Ltd with long term research being carried out by the City University, and is marketed under the name of "DRUM-STIC". It is intended as a direct replacement for the more conventional wooden dipsticks that are still widely used i n the UK for the measurement of liquid level.Item Metadata only Overview of a range of novel automotive sensors(Proceedings of the Institution of Mechanical Engineers. I Mech E, 1989) Goodyer, E. N.This paper presents a summary of a range of sensors developed at Sira Ltd which may be put to automotive use. The following sensors, as developed for various companies, are discussed: A range of low cost steering wheel position sensors which offer resolutions better than 0.5 degrees; An optical fuel flow sensor that detects light scattered by particles moving along with the fuel; A highly accurate electromechanical road tanker liquid level sensor and its' derivatives including a low cost sensor for use in car petrol tanks; A "Dim Dip" which optically detects an oncoming car or the tail lights of a preceding car and automatically dips the car's main beam; and, An optical linear displacement sensor, which uses widely available optical components. Possible applications include suspension arm extension, and wheel to road measurements.Item Open Access Geographic Information Systems Integration with the remote sensing data and the expert systems(CIESIN Consortium for International Earth Science Information Network, 1993-04-04) Orun, A.GIS modelling techniques have evolved over the years especially consequent to the provision of multiband large scale data via remote sensing and with the use of computer facilities with high storage capability in recent years. Meanwhile raster and vector based GIS information have begun to be widely used all over the world with the implication of versatile integration between image processing database and the expert systems. The work presented in this paper focuses on an interactive expert system (StarExpert) which is aimed to be developed in Marmara Research Centre.Item Open Access Analysis of METEOSAT cloud motion wind vectors at Istanbul(CIESIN Consortium for International Earth Science Information Network, 1993-04-04) Aslan, Z; Natarajan, K.; Orun, A.The wind vector evaluation through Meteosat is useful for a continental belt like Turkey where nation-wide radiosonde and aircraft data are suboptimal, especially from the point of view of numerical weather prediction (NWP). Towards this goal, investigations have been carried out on the Meteosat cloud motion winds using IR imagery with collocated radiosonde data in and around Istanbul with the eventual aim of developing general circulation models in the Mediterranean region.Item Open Access Turkey(Fort Collins, GIS World Inc., 1994) Orun, A.Turkey has its own strategic location between West and East. In recent years, several large-scale projects have been started such as the Southeast Anatolian Project and Ataturk dam, which are expected to have big influence in the Middle East due to water conflicts between the neighboring countries.