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Application of Genetic Algorithms in Identification ofLinear Time-Varying System

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International Journal of Minerals,Metallurgy and Materials 2000年第1期14卷 58-62页

作者： Zhichun Mu KeLiu Zichao Wang Datai Yu D. Koshal D. Pearce Information Engineering School, university of Science & Technology Beijing, Beijing 100083, China School of Engineering, university of brighton, brighton, UK univ Sci & Technol Beijing Informat Engn Sch Beijing 100083 Peoples R China brighton univ Sch Engn Brighton E Sussex England

By applying genetic algorithms (GA) to on-line identification of linear time-varying systems; a number of modifications are made to the Simple Genetic Algorithm to improve the performance of the algorithm in identification applications. The simulation results indicate that the method is not only capable of following the changing parameters of the system, but also has improved the identification accuracy compared with that using the least square method.

关键词： genetic algorithm, system identification linear system

Combat utility prediction

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Defence Technology（防务技术） 2016年第6期12卷 446-463页

作者： Stanislas GABROVSEK Ian COLWILL Elias STIPIDIS Vetronics Research Centre University of Brighton

The majority of allied casualties from recent conflicts were caused by blast wave and fragments perforation damage from Improvised Explosive Devices. Survivability to this type of threat is a critical factor to consider for land platform design. This paper proposes an original approach to platform survivability assessment using a combination of Agent-Based(AB) simulation and Fault Tree Analysis(FTA) to predict the consequences of IED fragment impacts on the platform operational status. As a demonstration, this approach is applied to the comparison of different platform architectures to gain insight into the optimisation of the platform component topology.

关键词： Mission Survivability Simulation Agent-based Fault-tree analysis Platform architecture

Pre-clinical evaluation of soybean-based wound dressings and dermal substitute formulations in pig healing and non-healing in vivo models

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Burns & Trauma 2014年第4期2卷 187-195页

作者： Rostislav V.Shevchenko Matteo Santin Pharmidex Pharmaceutical Services Ltd London brighton Centre for Regenerative Medicine University of BrightonBrightonUnited Kingdom

In the last decade,a new class of natural biomaterials derived from de-fatted soybean fl our processed by either thermoset or extraction procedures has been *** biomaterials uniquely combine adaptability to various clinical applications to proven tissue regeneration *** the present work,the biomaterials were formulated either as hydrogel or as paste formulation and their potential as wound dressing material or as dermal substitute was assessed by two in vivo models in pig skin:The healing full-thickness punch biopsy model and the non-healing full-thickness polytetrafl uoroethylene(PTFE)chamber *** results clearly show that collagen deposition is induced by the presence of these biomaterials.A unique pattern of early infl ammatory response,eliciting neutrophils and controlling macrophage infi ltration,is followed by tissue cell colonization of the wound bed with a signifi cant deposition of collagen fi *** study also highlighted the importance in the use of optimal formulations and appropriate handling upon *** large size,non-healing wounds,wound dermis was best obtained with the paste formulation as hydrogels appeared to be too loose to ensure lasting scaff olding *** the contrary,packing of the granules during the application of paste reduced biomaterial degradation rate and prevent the penetration of newly vascularized tissue,thus impeding grafting of split-thickness autologous skin grafts on the dermal substitute base.

关键词： Dermal substitutes in vivo models wound dressings soyabean-based biomaterials

Outcompeted by an invader?Interference and exploitative competition between tropical house gecko(Hemidactylus mabouia)and Barbados leaf-toed gecko(Phyllodactylus pulcher)for diurnal refuges in anthropogenic coastal habitats

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Integrative Zoology 2016年第3期11卷 229-238页

作者： Robert WILLIAMS Angelo P.PERNETTA Julia A.HORROCKS Ecology and Conservation Research Group School of Pharmacy and Biomolecular SciencesUniversity of BrightonBrightonUK Ecology and Conservation Research Group University of BrightonHastingsUK Department of Biological and Chemical Sciences University of the West IndiesBarbadosWest Indies

House geckos in the genus Hemidactylus are highly successful colonizers of regions beyond their native range,with colonization often resulting in displacement of native gecko species through competitive interactions for daytime refuge(crevices)and prey *** report on data collected from nighttime surveys undertaken in April-May 2014 on Barbados,West Indies,that focused on the distribution and abundance of the endemic Barbados leaf-toed gecko(Phyllodactylus pulcher)and the introduced tropical house gecko(Hemidactylus mabouia)along unlit coastal walls and among boulders in the grounds of a hotel *** contrast to patterns of displacement of native species by *** seen elsewhere,*** was more abundant than *** on coastal walls,whereas the latter was found in greater numbers using boulders at this *** and boulders differed with regard to availability of diurnal refugia suitable for geckos,with the walls having high frequency of small crevices with openings<20 mm,and boulders offering very little cover other than the underside of the boulder *** investigate whether this niche separation was a result of differences in diurnal refuge use between the species,we conducted experimental trials in which geckos were allowed to select between refugia with different *** species selected for narrower and warmer refugia,and refugia that had been previously occupied by the other *** shared preferences for refugia type suggest that other factors underlie the niche separation observed in the *** supporting high densities of ***,coastal walls could offer important secondary habitat by augmenting the natural cliff side habitat of this endemic gecko,a finding that could be exploited for the conservation of this candidate species for Critically Endangered classification.

关键词： Barbados leaf-toed gecko Hemidactylus island endemic Phyllodactylus tropical house gecko

Service evaluation:identification of gaps in choking prevention advice for children in the South Coast of England,UK

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Family Medicine and Community Health 2023年第4期11卷 71-84页

作者： Saira Khan Karen Patterson Katy Fidler Medical Teaching Building Brighton and Sussex Medical SchoolBrightonUK Department of Clinical and Experimental Medicine Brighton and Sussex Medical SchoolBrightonUK Academic Department of Paediatrics Royal Alexandra Children’s HospitalBrightonUK

INTRODUCTION Choking,also known as foreign body airway obstruction,is the blockage of respiration by a foreign body in the airway including the trachea,hypopharynx and pharynx.1 Among young children,choking is one of the leading causes of death among unintentional injuries,2 thus making it a significant public health *** under 5 have the highest risk of choking compared with other children and adults.3 In 2016,of the approx-imately 1900 choking episodes resulting in emergency calls in London,40%were for children under 5.

关键词： choking prevention injuries

A randomized,fellow eye,comparison of keratometry,aberrometry,tear film,axial length and the anterior chamber depth after eye rubbing in non-keratoconic eyes

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Eye and Vision 2017年第1期4卷 106-113页

作者： Jordan V.Chervenkoff Elizabeth Hawkes Gabriela Ortiz Deborah Horney Mayank A.Nanavaty Sussex Eye Hospital Brighton&Sussex University Hospitals NHS TrustEastern RoadBrighton BN25BFUK

Background:To investigate the effect of eye rubbing on keratometry(K),aberrometry,tear film break-up-time(TFBUT)and anterior chamber depth(ACD).Methods:Volunteers without any corneal pathology or dry eyes were randomised to rubbing in one eye and the fellow-eye was *** rubbing was performed for 2 *** outcomes studied were anterior and posterior K *** outcomes were changes in TFBUT,axial length(AL)&ACD,K changes in various zones,asphericity and *** and post rubbing K,aberrometry,ACD and TFBUT were assessed in a predetermined *** relationship of the above parameters to axial length(AL)was also *** was analysed using vector ***:Pre versus post rubbing,anterior flatter K further flattened(42.51±1.52 D vs.42.36±1.53 D,p=0.003)and the changes to J0 vector in central cornea(−0.16±0.26 D vs.-0.27±0.33 D,p=0.038)suggested change to against-the-rule(ATR)*** was significant change in Z^(+2)_(2) polynomial following *** found a positive correlation between axial length and change in posterior K(r=0.335,p=0.020).The TFBUT reduced following eye rubbing(15.3 s vs.13.9 s,p=0.0001).There was a positive correlation between AL and increase in ACD post rubbing(r=0.300,p=0.038).There was a positive correlation between ACD and change in mean posterior K(r=0.305,p=0.035).Conclusions:In healthy eyes,following eye rubbing,there is a significant change in TFBUT and central anterior K changes towards ATR *** eyes had more changes in posterior K and ***,eyes with deeper ACD showed more steepness of posterior K.

关键词： Eye rubbing Ectasia Tear film break up time Astigmatism Aberrations

Motion control design for unmanned ground vehicle in dynamic environment using intelligent controller

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International Journal of Intelligent Computing and Cybernetics 2017年第4期10卷 530-548页

作者： Auday Almayyahi Weiji Wang Alaa Adnan Hussein Phil Birch Department of Engineering and Design University of SussexBrightonUK

Purpose–The motion control of unmanned ground vehicles(UGV)is a challenge in the industry of *** purpose of this paper is to propose a fuzzy inference system(FIS)based on sensory information for solving the navigation challenge of UGV in cluttered and dynamic ***/methodology/approach–The representation of the dynamic environment is a key element for the operational field and for the testing of the robotic navigation *** dynamic obstacles move randomly in the operation field,the navigation problem becomes more complicated due to the coordination of the elements for accurate navigation and collision-free path within the environmental *** paper considers the construction of the FIS,which consists of two *** first controller uses three sensors based on the obstacles distances from the front,right and *** second controller employs the angle difference between the heading of the vehicle and the targeted angle to obtain the optimal route based on the environment and reach the desired destination with minimal running power and *** proposed design shows an efficient navigation strategy that overcomes the current navigation challenges in dynamic ***–Experimental analyses are conducted for three different scenarios to investigate the validation and effectiveness of the introduced controllers based on the *** reported simulation results are obtained using MATLAB software *** results show that the controllers of the FIS consistently perform the manoeuvring task and manage the route plan efficiently,even in a complex environment that is populated with dynamic *** paper demonstrates that the destination was reached optimally using the shortest free *** limitations/implications–The paper represents efforts toward building a dynamic environment filled with dynamic obstacles that move at various speeds and *** methodology of designing the FIS is accom

关键词： Fuzzy inference system(FIS) Dynamic obstacles avoidance Intelligent controller Unmanned ground vehicle(UGV)

Instantaneous frequency and wave mode identification in a magnetosheath using few spatial points

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Chinese Physics B 2013年第8期22卷 496-501页

作者： Nathaniel E U Beloff N George N J Department of Physics Akwa Ibom State UniversityNigeria university of Sussex Brighton UK

Observational data such as those obtained from the magnetosheath in the downstream of Earth＇s bow shock have waveforms that differ from those of sinusoidal signals. In practice, they are not even aggregates of sinusoidal signals. Therefore, the frequency decomposition for the data requires technique that will account for the time-varying features of the data that will lead to deduction of physical meaning of the observations. The combination of empirical mode decompo- sition （EMD） and Hilbert transform has been used for extracting the various contributing oscillatory modes （EMDs） and the instantaneous frequency determination （Hilbert transform） of every physically meaningful mode called intrinsic mode func- tion （IMF）. The resulting instantaneous frequencies are used to determine instantaneous wave vectors. The combination of the instantaneous frequencies and wave vectors is useful in the identification of wave modes based on the characteristics of the waves. The results show that EMD-Hilbert can be more reliable than simple Hilbert transform alone.

关键词： EMD-Hilbert transform instantaneous frequency and wave vector

On ‘Conditionals in English and FOPL’:A Reply to Abbott (2006)

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外国语 2007年第6期30卷 2-20页

作者： Ken Turner School of Languages University of Brighton UK

A recent defence of the material analysis of natural indicative conditionals is examined. This defence, it is argued, is initially plausible but ultimately flawed. The empirical and logical case against the material analysis of natural indicative conditionals is made. The empirical and logical arguments are overwhelming and the conclusion is inevitable: natural language indicatives are not material conditionals.

关键词：英语语用学指示条件原始逻辑关联逻辑直观逻辑

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