A. Barati, S. Dastgheib, A. Movaghar, I. Attarzadeh
{"title":"An Optimised Algorithm to Detect Faulty Readings along the Substrate Access Wireless Long-Thin Sensor Networks","authors":"A. Barati, S. Dastgheib, A. Movaghar, I. Attarzadeh","doi":"10.1109/EMS.2011.42","DOIUrl":"https://doi.org/10.1109/EMS.2011.42","url":null,"abstract":"Wireless sensor networks (WSNs) are composed of hundreds or thousands of small nodes, which work together and associate with a specific task or tasks to do. It is expected that wireless sensor networks will be used widely in many applications in the near future. One of the most important issues in WSNs is localisation. There are crucial problems over network localisation such as security attacks (internal or external), energy efficiency, and accuracy, which impact performance and energy-consuming of wireless sensor networks. The main source of these problems is network topology. A long-thin network topology (LTNT) in wireless sensor can produce errors in network localisation due to special deployment of nodes, also it can cause detecting nodes with faulty readings. This paper proposes an optimised algorithm based on Debraj De algorithm to determine faulty readings in WSNs. This algorithm uses a correlation parameter of two nodes to detect nodes with faulty readings. The proposed algorithm reduces computational complexity of the correlation algorithm, which causes network energy consumption becomes significantly low when compared with the original algorithm.","PeriodicalId":131364,"journal":{"name":"2011 UKSim 5th European Symposium on Computer Modeling and Simulation","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126159443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Model Identification Using Correlation-Based Inference and Transfer Entropy Estimation","authors":"C. Damiani, P. Lecca","doi":"10.1109/EMS.2011.58","DOIUrl":"https://doi.org/10.1109/EMS.2011.58","url":null,"abstract":"Biological network inference makes use of mathematical methods to deduce the topology of networks of biochemical interactions from observational data. Recently, many efforts have been directed towards the achievement of this goal, and an increasing literature is proposing new mathematical models of inference. However, this still remains a challenging task, requiring a combination of different methods in order to overcome the limitations of each single procedure. In this work, we propose three methods to infer the structure of a biochemical network from the abundance of reactants time series. The first method combines the evaluation of the time-lagged correlation between species with a probabilistic method of model calibration. The second method estimates the transfer entropy to detect the causal relationships between time series. The third method is a combination of the transfer entropy-based method with the probabilistic model of parameter estimation. We argue the motivations, the advantages and the limitations of the three methods, and we present their performances on data generated from models of experimentally validated metabolic networks.","PeriodicalId":131364,"journal":{"name":"2011 UKSim 5th European Symposium on Computer Modeling and Simulation","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122239186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Indexed Sequential Access Method (ISAM): A Review of the Processing Files","authors":"Fahad Zaqout, M. Abbas, Al-Samarraie Hosam","doi":"10.1109/EMS.2011.13","DOIUrl":"https://doi.org/10.1109/EMS.2011.13","url":null,"abstract":"Indexed sequential access method (ISAM) is used widely for processing database operations among different platforms with definite characteristics. The classification of these indexes in the data set processing determines various managing of the records. They can be shown by several indexes of an employee in the one database that sequentially joined based on the provided set of information. Several issues in managing the data set were addressed in terms of storing, processing, and retrieving of data records into the column, this due to the lacking in understanding the ISAM sequential procedure for managing data. Thus, this paper intends to demonstrate the classification of ISAM within the platforms and the working procedure as well as the indexing schema for this method in processing files.","PeriodicalId":131364,"journal":{"name":"2011 UKSim 5th European Symposium on Computer Modeling and Simulation","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134218599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Accessibility of Norwegian Municipalities Websites: A Decision Support Tool","authors":"A. Abdelgawad, M. Snaprud, J. Krogstie","doi":"10.1109/EMS.2011.61","DOIUrl":"https://doi.org/10.1109/EMS.2011.61","url":null,"abstract":"Access to public websites is crucial to assure equal opportunities for all citizens to participate in society. Although, a range of studies to analyse the accessibility of websites have been carried out, we have not been able to find any study evaluating the effect of managerial decisions on the accessibility of websites. This paper presents a demonstrator simulation model, built using System Dynamics methodology. The model focuses on accessibility of Norwegian Municipal websites, and is intended to be used as a decision support tool, mainly for managers responsible for website development and maintenance. To build the underlying model we have used information collected from in-depth interviews with representatives from a group of Norwegian municipalities, and the outcomes of a review of the relevant literature. The paper contains a description of the model structure, and the behaviour from running the model using parameters of two Norwegian municipalities.","PeriodicalId":131364,"journal":{"name":"2011 UKSim 5th European Symposium on Computer Modeling and Simulation","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133436407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"OPC UA Object Oriented Model for Public Transportation System","authors":"A. Maka, Rafał Cupek, Jakub Rosner","doi":"10.1109/EMS.2011.84","DOIUrl":"https://doi.org/10.1109/EMS.2011.84","url":null,"abstract":"This paper presents an object oriented model of public transportation system based on OLE for Process Control Unified Architecture (OPC UA), including communication's flow and data structure models. The OPC UA is a successor of the classic OPC - a common communication standard used in industrial systems. Its object oriented architecture allows flexible flow of information and easy data exchange between Control Systems (CS) and Enterprise Resource Planning Systems (ERP). Despite of increasing usage of OPC UA, it has not been applied in such systems yet. In this paper, authors introduce adaptation of the OPC UA as a solution for real-time management of large amount of data coming from public transportation system and discuss potential and limitations of proposed model.","PeriodicalId":131364,"journal":{"name":"2011 UKSim 5th European Symposium on Computer Modeling and Simulation","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122945018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Genetic-Neuro-Fuzzy Controllers for Second Order Control Systems","authors":"D. Pelusi","doi":"10.1109/EMS.2011.49","DOIUrl":"https://doi.org/10.1109/EMS.2011.49","url":null,"abstract":"Overshoot, settling and rise time define the timing parameters of a control system. The main challenge is to attempt to reduce these parameters to achieve good control performances. The target is to obtain the optimal timing values. In this paper, three different approaches are presented to improve the control performances of second order control systems. The first approach is related to the design of a PID controller based on Ziegler-Nichols tuning formula. An optimal fuzzy controller optimized through Genetic Algorithms represents the second approach. Following this way, the best membership functions are chosen with the help of the darwinian theory of natural selection. The third approach uses the neural networks to achieve adaptive neuro-fuzzy controllers. In this way, the fuzzy controller assumes self-tuning capability. The results show that the designed PID controller has a very slow rise time. The genetic-fuzzy controller gives good values of overshoot and settling time. The best global results are achieved by neuro-fuzzy controller which presents good values of overshoot, settling and rise time. Moreover, our neuro-fuzzy controller improves the results of some conventional PID and fuzzy controllers.","PeriodicalId":131364,"journal":{"name":"2011 UKSim 5th European Symposium on Computer Modeling and Simulation","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120987082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fitness Landscape Analysis of a Simulation Optimisation Problems with HeuristicLab","authors":"V. Bolshakov, Erik Pitzer, M. Affenzeller","doi":"10.1109/EMS.2011.14","DOIUrl":"https://doi.org/10.1109/EMS.2011.14","url":null,"abstract":"In this paper the fitness landscape of a simulation optimisation problem is analysed within the metaheuristic optimisation framework Heuristic Lab. Computational experiments are performed within an application prototype of a link between the model of a vehicle scheduling problem and the optimisation framework. Modern fitness landscape analysis approaches implemented in the Heuristic Lab framework are applied and described. New insights are gained in the field of fitness landscapes analysis for stochastic problems. Application of fitness landscape analysis in simulation optimisation for meta-optimisation purposes is also considered in this paper. Comprehensive fitness landscape analysis of different instances of one type of optimisation problem and its results in comparison with results of optimisation experiments allows determining the impact of different landscape structures on the behaviour of different metaheuristic optimisation algorithms.","PeriodicalId":131364,"journal":{"name":"2011 UKSim 5th European Symposium on Computer Modeling and Simulation","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128636425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mercedes Argüello Casteleiro, J. Des, Maria Jesus Fernandez Prieto, Rogelio Perez, Stavros Lekkas
{"title":"An Ontology-Based Approach to Natural Language Generation from Coded Data in Electronic Health Records","authors":"Mercedes Argüello Casteleiro, J. Des, Maria Jesus Fernandez Prieto, Rogelio Perez, Stavros Lekkas","doi":"10.1109/EMS.2011.47","DOIUrl":"https://doi.org/10.1109/EMS.2011.47","url":null,"abstract":"The worldwide adoption of the HL7 Clinical Document Architecture (CDA) is promoting the availability of coded data (CDA entries) within sections of clinical documents. At the moment, an increasing number of studies are investigating ways to transform the narratives of CDA documents into machine process able CDA entries. This paper addresses the reverse problem, i.e. obtaining linguistic representations (sentences) from CDA entries. The approach presented employs Natural Language Generation (NLG) techniques and deals with two major tasks: content selection and content expression. The current research proposes a formal semantic representation of CDA entries and investigates how expressive domain ontologies in OWL and SPARQL SELECT queries can contribute to NLG. To validate the proposal, the study has focused on CDA entries from the History of Present Illness sections of CDA consultation notes. The results obtained are encouraging, as the clinical narratives automatically generated from these CDA entries fulfil the clinicians' expectations.","PeriodicalId":131364,"journal":{"name":"2011 UKSim 5th European Symposium on Computer Modeling and Simulation","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124620296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Tool for Calculation of Solar Radiation and Solar Systems Design","authors":"M. Paluch, R. Fasuga, Tomas Bilek","doi":"10.1109/EMS.2011.66","DOIUrl":"https://doi.org/10.1109/EMS.2011.66","url":null,"abstract":"This article deals with the visualization of maps and calculations of solar radiation and photovoltaic systems. The first part of this paper describes the current situation, the EU's interactive maps (Photovoltaic Geographical information System). It also describes the input data used for developing the application, ASTER GDEM data and describes the process of calculating the terrain shadows data. In this part is also discussed issue of solar radiation and proper orientation and slope of photovoltaic panels in relation with the type and inclination of the landscape. The second part of this article is devoted to the development of the custom application which visualizes the solar radiation and terrain shadows to the map and calculates the solar radiation for the area specified by the user. Application uses the Open Source control from the project GMaps.NET. In conclusion, results are compared to the EU model with own solutions and is described the future of this project.","PeriodicalId":131364,"journal":{"name":"2011 UKSim 5th European Symposium on Computer Modeling and Simulation","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122032711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A memetic algorithm for program verification","authors":"Nassima Aleb, Zahia Tamen","doi":"10.1109/EMS.2011.92","DOIUrl":"https://doi.org/10.1109/EMS.2011.92","url":null,"abstract":"We present a memetic algorithm for program safety properties verification. This problem is expressed by means of Reach ability of some erroneous location L in the program. We use a new method for program modeling: A Separation Modeling Approach: ASMA, in which programs are represented by two components: Data Model DM, and Control Model CM. The erroneous location is represented by its \"Location Access Chain\", LAC: a string where each position represents the required value of CM elements guards to reach L. The memetic algorithm generates each time a new population attempting to provide an execution which is \" conform\" to the location access chain. An individual of the population is a set of intervals each one representing an input variable. At each generation, two local search operators are used to improve some chosen solutions.","PeriodicalId":131364,"journal":{"name":"2011 UKSim 5th European Symposium on Computer Modeling and Simulation","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116740346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}