Pub Date : 2015-11-01DOI: 10.1109/KBEI.2015.7436204
Ahmad Pouramini, Sh. Nasiri
In this paper, we present an approach and a visual tool, called ABDES, for creating web wrappers to extract data records from web pages. In our approach, we rely mainly on the visible page content, simulating the way a human user scans a web page for specific data. To create a wrapper, we use text features such as textual delimiters, keywords, constants or text patterns, which we call anchors, to create patterns for the target data regions and data records. We offer a polynomial data extraction algorithm, in which these patterns are checked against the page elements in a mixed bottom-up and top-down traverse of the DOM tree. The extracted data is directly mapped onto a hierarchical XML structure as the output of the algorithm. The wrappers generated by the system are robust and independent of the HTML structure. Therefore, they can be adapted to multiple websites to gather and integrate information.
{"title":"Web data extraction using textual anchors","authors":"Ahmad Pouramini, Sh. Nasiri","doi":"10.1109/KBEI.2015.7436204","DOIUrl":"https://doi.org/10.1109/KBEI.2015.7436204","url":null,"abstract":"In this paper, we present an approach and a visual tool, called ABDES, for creating web wrappers to extract data records from web pages. In our approach, we rely mainly on the visible page content, simulating the way a human user scans a web page for specific data. To create a wrapper, we use text features such as textual delimiters, keywords, constants or text patterns, which we call anchors, to create patterns for the target data regions and data records. We offer a polynomial data extraction algorithm, in which these patterns are checked against the page elements in a mixed bottom-up and top-down traverse of the DOM tree. The extracted data is directly mapped onto a hierarchical XML structure as the output of the algorithm. The wrappers generated by the system are robust and independent of the HTML structure. Therefore, they can be adapted to multiple websites to gather and integrate information.","PeriodicalId":168295,"journal":{"name":"2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126193866","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}
Pub Date : 2015-11-01DOI: 10.1109/KBEI.2015.7436070
A. Niaki, I. Dabaghian Amiri
The paper investigates the performance of distance relays for shunt-flexible ac transmission system (FACTS) compensated transmission lines. Static var compensator (SVC) and static synchronous compensator (STATCOM) are considered as shunt-FACTS devices and the effect of different parameters, e.g. location of FACTS devices and fault along the transmission line, operation mode of FACTS devices, value of fault resistance and type of fault is studied on distance relay performance. Mathematical equations for calculating the impedance at the relaying point are presented for various scenarios and their validity is proved by extensive simulations. It is demonstrated that when the shunt-FACTS devices are located in the fault loop, e.g. they install in the mid-point and the fault occurs at the second half of the transmission line, the impedance seen by distance relay will be miscalculated and consequently, the distance relay will maloperate (under-reach or over-reach). Moreover, maloperation of the distance relay will take place, if the value of fault resistance is non-zero, whether the shunt-FACTS devices are in the fault loop or not. Deviation of measured impedance from its actual value is related to the location of shunt-FACTS device and its mode of operation for reactive power compensation.
{"title":"The impact of shunt-FACTS devices on distance relay performance","authors":"A. Niaki, I. Dabaghian Amiri","doi":"10.1109/KBEI.2015.7436070","DOIUrl":"https://doi.org/10.1109/KBEI.2015.7436070","url":null,"abstract":"The paper investigates the performance of distance relays for shunt-flexible ac transmission system (FACTS) compensated transmission lines. Static var compensator (SVC) and static synchronous compensator (STATCOM) are considered as shunt-FACTS devices and the effect of different parameters, e.g. location of FACTS devices and fault along the transmission line, operation mode of FACTS devices, value of fault resistance and type of fault is studied on distance relay performance. Mathematical equations for calculating the impedance at the relaying point are presented for various scenarios and their validity is proved by extensive simulations. It is demonstrated that when the shunt-FACTS devices are located in the fault loop, e.g. they install in the mid-point and the fault occurs at the second half of the transmission line, the impedance seen by distance relay will be miscalculated and consequently, the distance relay will maloperate (under-reach or over-reach). Moreover, maloperation of the distance relay will take place, if the value of fault resistance is non-zero, whether the shunt-FACTS devices are in the fault loop or not. Deviation of measured impedance from its actual value is related to the location of shunt-FACTS device and its mode of operation for reactive power compensation.","PeriodicalId":168295,"journal":{"name":"2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125715163","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}
Pub Date : 2015-11-01DOI: 10.1109/KBEI.2015.7436214
P. Esmaili, H. Kangarlou, Hadi Savalooni, Mahmood Ghoran Nevis
Indium sulfide Nano layers were deposited on SiO2 amorphous substrates by chemical bath deposition technique at 70°C temperature aqueous solution temperature and pH=2.2 constant value. Cu+3 ions by different concentration dopped from CuCl2 source into In2S3 layers. Produced layers post annealed at 400°C about one hour. Optical reflectance measured in the wavelength of 350-950 nm by spectrophotometer. Other optical properties and optical band gaps were calculated using Kramers-Kronig relations on reflectivity curves.
{"title":"Effect of doping on optical properties of In2S3 produced nano layers; chemical deposition, Kramers-Kronig method","authors":"P. Esmaili, H. Kangarlou, Hadi Savalooni, Mahmood Ghoran Nevis","doi":"10.1109/KBEI.2015.7436214","DOIUrl":"https://doi.org/10.1109/KBEI.2015.7436214","url":null,"abstract":"Indium sulfide Nano layers were deposited on SiO<sub>2</sub> amorphous substrates by chemical bath deposition technique at 70°C temperature aqueous solution temperature and pH=2.2 constant value. Cu<sup>+3</sup> ions by different concentration dopped from CuCl<sub>2</sub> source into In<sub>2</sub>S<sub>3</sub> layers. Produced layers post annealed at 400°C about one hour. Optical reflectance measured in the wavelength of 350-950 nm by spectrophotometer. Other optical properties and optical band gaps were calculated using Kramers-Kronig relations on reflectivity curves.","PeriodicalId":168295,"journal":{"name":"2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126853898","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}
Pub Date : 2015-11-01DOI: 10.1109/KBEI.2015.7436162
Seyyedeh Marziyeh Hamedi, H. E. Komleh
Classification of soft tissues is often joined with uncertainty and ultimate areas border might be hardly measured in segmentation. Basic techniques of edge detection can be used to determine the boundary edge, but because of noise and gray levels steep changes in medical images, it is difficult to achieve the edge of a lesion in image with reasonable and precise segmentation. In this paper a graph based algorithm is presented to extract alike region in image, this approach helps finding similar lesions and accurate segmentation.
{"title":"Segmentation of breast images to find the lesions using the decreased neighborhood graph algorithm","authors":"Seyyedeh Marziyeh Hamedi, H. E. Komleh","doi":"10.1109/KBEI.2015.7436162","DOIUrl":"https://doi.org/10.1109/KBEI.2015.7436162","url":null,"abstract":"Classification of soft tissues is often joined with uncertainty and ultimate areas border might be hardly measured in segmentation. Basic techniques of edge detection can be used to determine the boundary edge, but because of noise and gray levels steep changes in medical images, it is difficult to achieve the edge of a lesion in image with reasonable and precise segmentation. In this paper a graph based algorithm is presented to extract alike region in image, this approach helps finding similar lesions and accurate segmentation.","PeriodicalId":168295,"journal":{"name":"2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127189208","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}
Pub Date : 2015-11-01DOI: 10.1109/KBEI.2015.7436130
J. Vahidi, Mohamed Madadpour Inallou
Noise detection is one of the most important issues in image processing. There are different noises which salt and pepper is one the most common noise among them. All kinds of noises can happen during the image transmission. In this paper, after reviewing on some different algorithms, a new approach is proposed for detecting and removing salt and pepper noise. The proposed approach works based on median filter strategy. The results of implementation and comparisons show that the restored image, by proposed approach, has better visual quality.
{"title":"Using salt and pepper noise detection and removal based on neighbor pixels in gray-scale images","authors":"J. Vahidi, Mohamed Madadpour Inallou","doi":"10.1109/KBEI.2015.7436130","DOIUrl":"https://doi.org/10.1109/KBEI.2015.7436130","url":null,"abstract":"Noise detection is one of the most important issues in image processing. There are different noises which salt and pepper is one the most common noise among them. All kinds of noises can happen during the image transmission. In this paper, after reviewing on some different algorithms, a new approach is proposed for detecting and removing salt and pepper noise. The proposed approach works based on median filter strategy. The results of implementation and comparisons show that the restored image, by proposed approach, has better visual quality.","PeriodicalId":168295,"journal":{"name":"2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI)","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127483340","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}
Pub Date : 2015-11-01DOI: 10.1109/KBEI.2015.7436156
Mohammadreza Sharbaf, B. Zamani, B. T. Ladani
With the growth of systems complexity the need for verifying the behavior of systems is increasing. UML per se provides no means to check model consistency. However, UML models can be checked if they are converted into their equivalent formal representation. In this paper, we propose an approach based on Model-to-Text transformation to perform a semi-automatic mapping for verification of concurrent UML models using MERL language and MetaEdit+ tool. State machine is transformed into SMV model description and activity diagram is transformed into LTL formulas. Then, we use NuSMV model checker to verify the obtained formal specification. To evaluate the work, a case study of the ordering system is presented to illustrate our approach. A mapping method to check the consistency of state machines with related activity diagrams at early stages of system development is the main result of our work.
{"title":"Towards automatic generation of formal specifications for UML consistency verification","authors":"Mohammadreza Sharbaf, B. Zamani, B. T. Ladani","doi":"10.1109/KBEI.2015.7436156","DOIUrl":"https://doi.org/10.1109/KBEI.2015.7436156","url":null,"abstract":"With the growth of systems complexity the need for verifying the behavior of systems is increasing. UML per se provides no means to check model consistency. However, UML models can be checked if they are converted into their equivalent formal representation. In this paper, we propose an approach based on Model-to-Text transformation to perform a semi-automatic mapping for verification of concurrent UML models using MERL language and MetaEdit+ tool. State machine is transformed into SMV model description and activity diagram is transformed into LTL formulas. Then, we use NuSMV model checker to verify the obtained formal specification. To evaluate the work, a case study of the ordering system is presented to illustrate our approach. A mapping method to check the consistency of state machines with related activity diagrams at early stages of system development is the main result of our work.","PeriodicalId":168295,"journal":{"name":"2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123631813","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}
Pub Date : 2015-11-01DOI: 10.1109/KBEI.2015.7436126
Shahab Tareghian, Zarrintaj Bornaee
Increasing development of cloud computing has enabled service providers to efficiently present their services in cloud platform; however, they still must face a prominent issue which is providing favorable quality of service parameters. The main challenge is distributing request in such a way that resources and memory are optimally utilized while QoS requirements such as make-span are minimized. Recent research works on cloud computing have mostly considered one criterion. In this paper a multi-objective scheduling scheme is investigated and a static method for distributing different requests in cloud platform is proposed. Exploiting particle swarm optimization, the proposed method reduces make-span in addition to decreasing used memory. Simulation results revealed that the proposed method significantly reduces make-span and memory usage in comparison to its counterparts.
{"title":"Algorithm to improve job scheduling problem in cloud computing environment","authors":"Shahab Tareghian, Zarrintaj Bornaee","doi":"10.1109/KBEI.2015.7436126","DOIUrl":"https://doi.org/10.1109/KBEI.2015.7436126","url":null,"abstract":"Increasing development of cloud computing has enabled service providers to efficiently present their services in cloud platform; however, they still must face a prominent issue which is providing favorable quality of service parameters. The main challenge is distributing request in such a way that resources and memory are optimally utilized while QoS requirements such as make-span are minimized. Recent research works on cloud computing have mostly considered one criterion. In this paper a multi-objective scheduling scheme is investigated and a static method for distributing different requests in cloud platform is proposed. Exploiting particle swarm optimization, the proposed method reduces make-span in addition to decreasing used memory. Simulation results revealed that the proposed method significantly reduces make-span and memory usage in comparison to its counterparts.","PeriodicalId":168295,"journal":{"name":"2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121567551","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}
Pub Date : 2015-11-01DOI: 10.1109/KBEI.2015.7436110
M. Kankashvar, F. Hashemzadeh, M. Baradarannia, A. Ghiasi
Optimization of linear time-delay systems with input delay has been studied in this article. A new systematic method of time-optimization is proposed, and the system is stabilized at the origin. The controller is expressed as a state-feedback law. An example which justifies the suggested method is provided.
{"title":"State feedback time-optimal controller for linear systems with input delay","authors":"M. Kankashvar, F. Hashemzadeh, M. Baradarannia, A. Ghiasi","doi":"10.1109/KBEI.2015.7436110","DOIUrl":"https://doi.org/10.1109/KBEI.2015.7436110","url":null,"abstract":"Optimization of linear time-delay systems with input delay has been studied in this article. A new systematic method of time-optimization is proposed, and the system is stabilized at the origin. The controller is expressed as a state-feedback law. An example which justifies the suggested method is provided.","PeriodicalId":168295,"journal":{"name":"2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124959549","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}
Pub Date : 2015-11-01DOI: 10.1109/KBEI.2015.7436025
R. Evans, Muhammad Rafique
The traditional assumption by academics and industrialists that `Experts' are more valuable to an organisation than inexperienced workers is one which should be challenged. Typically, those considered experts employ tried and tested methods for production success passed on by elders with wisdom, while inexperienced knowledge workers often remain unheard and their knowledge under-utilised. However, less experienced workers with an openness to creativity and fresh perspectives to engineering practice might possess the knowledge required to innovate manufacturing projects and sustain competitive advantage. This article extends the research of Tempest and Evans et al. by challenging the unilateral transfer of knowledge seen in traditional product development teams. A methodological framework is presented aimed at dismantling knowledge hierarchies by creating an `Anonymous Worker' environment using micro-blogging which can be embedded into production departments. Potential limitations to the successful implementation of the framework are reported, identifying that the framework would be most beneficial applied to the start of a product's lifecycle during the conceptualisation of ideas phase.
{"title":"Using micro-blogging to dismantle knowledge hierarchies in product development teams","authors":"R. Evans, Muhammad Rafique","doi":"10.1109/KBEI.2015.7436025","DOIUrl":"https://doi.org/10.1109/KBEI.2015.7436025","url":null,"abstract":"The traditional assumption by academics and industrialists that `Experts' are more valuable to an organisation than inexperienced workers is one which should be challenged. Typically, those considered experts employ tried and tested methods for production success passed on by elders with wisdom, while inexperienced knowledge workers often remain unheard and their knowledge under-utilised. However, less experienced workers with an openness to creativity and fresh perspectives to engineering practice might possess the knowledge required to innovate manufacturing projects and sustain competitive advantage. This article extends the research of Tempest and Evans et al. by challenging the unilateral transfer of knowledge seen in traditional product development teams. A methodological framework is presented aimed at dismantling knowledge hierarchies by creating an `Anonymous Worker' environment using micro-blogging which can be embedded into production departments. Potential limitations to the successful implementation of the framework are reported, identifying that the framework would be most beneficial applied to the start of a product's lifecycle during the conceptualisation of ideas phase.","PeriodicalId":168295,"journal":{"name":"2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125023986","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}
Pub Date : 2015-11-01DOI: 10.1109/KBEI.2015.7436029
Samar Poorinezhad, S. M. Rakhtala
An analysis of second-order sliding-mode algorithms, specially of super-twisting and twisting as a filter algorithm is performed in frequency domain with the use of the describing function method, and is shown that periodic motion happens and the parameters of this periodic motion is intended. The analysis is done via utilization of the concept of equivalent gain of nonlinear function. The equivalent gain is used as a model of propagation of averaged values of signals through nonlinear elements of system. By exerting External disturbance to the system, the output of the system was evaluated. By means of a simulation example, results are presented.
{"title":"Chattering analysis of second order sliding mode algorithms for linear plants with disturbance","authors":"Samar Poorinezhad, S. M. Rakhtala","doi":"10.1109/KBEI.2015.7436029","DOIUrl":"https://doi.org/10.1109/KBEI.2015.7436029","url":null,"abstract":"An analysis of second-order sliding-mode algorithms, specially of super-twisting and twisting as a filter algorithm is performed in frequency domain with the use of the describing function method, and is shown that periodic motion happens and the parameters of this periodic motion is intended. The analysis is done via utilization of the concept of equivalent gain of nonlinear function. The equivalent gain is used as a model of propagation of averaged values of signals through nonlinear elements of system. By exerting External disturbance to the system, the output of the system was evaluated. By means of a simulation example, results are presented.","PeriodicalId":168295,"journal":{"name":"2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122155216","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}
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