2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)最新文献_第5页

Time delay compensation by fuzzy control in the case of master-slave telesurgery 主从远程手术的模糊时滞补偿

2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5873019

R. Precup, L. Kovács, T. Haidegger, S. Preitl, A. Kovács, B. Benyó, E. Borbely, Z. Benyó

{"title":"Time delay compensation by fuzzy control in the case of master-slave telesurgery","authors":"R. Precup, L. Kovács, T. Haidegger, S. Preitl, A. Kovács, B. Benyó, E. Borbely, Z. Benyó","doi":"10.1109/SACI.2011.5873019","DOIUrl":"https://doi.org/10.1109/SACI.2011.5873019","url":null,"abstract":"Telesurgery means the remote application of interventional medical techniques; a concept that is currently widely practiced around the world for short distance through master-slave robot systems. The concept has the potential to service long distance telesurgery as well. However, this requires the effective handling of communication latency. The current paper suggests a fuzzy control solution for telesurgical applications aiming at the alleviation of the disturbing effects of large latencies with the concept of remote surgical robotics. The fuzzy control solution is supported by a cascade control system structure with two proportional-integral-derivative (PID) controllers in the inner and outer control loops and designed by Kessler's Extended Symmetrical Optimum empirical criteria. The PID controller in the outer loop is next replaced by Takagi-Sugeno-Kong PID-fuzzy controllers which combine several separately designed PID controllers. The combination of separately designed PID controllers and the modal equivalence principle are expressed as a design and tuning method of the Tagaki-Sugeno-Kong PID-fuzzy controllers.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116198921","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}

引用次数: 10

A physical layer simulator for WiMAX in Rayleigh fading channel 基于瑞利衰落信道的WiMAX物理层模拟器

2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5873014

J. Mountassir, H. Balta, M. Oltean, M. Kovaci, A. Isar

引用次数: 18

Cell spreading on biocompatible materials studied by computer simulations 计算机模拟研究细胞在生物相容性材料上的扩散

2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5873082

A. Robu, L. Stoicu-Tivadar, A. Neagu

{"title":"Cell spreading on biocompatible materials studied by computer simulations","authors":"A. Robu, L. Stoicu-Tivadar, A. Neagu","doi":"10.1109/SACI.2011.5873082","DOIUrl":"https://doi.org/10.1109/SACI.2011.5873082","url":null,"abstract":"The goal of tissue engineering is to create functional tissue constructs that can be implanted into the human organism. A classical approach to tissue engineering consists in the culturing of cells on porous scaffolds made of biocompatible and biodegradable materials. An important step in this approach is the cell seeding of scaffolds. It has been shown that uniform seeding leads to faster development of the tissue construct and superior mechanical properties in comparison to non-uniform seeding. The success of seeding depends on cell spreading on the scaffold's material. This paper presents a computational model of a biological system used in experiments on cell spreading on biomaterials. The model describes a cell aggregate placed on a parallelepipedic slab of biomaterial bathed in cell culture medium. Experiments suggest that cell spreading results from a competition between cell-cell and cell-biomaterial interactions, in accord with Steinberg's differential adhesion hypothesis, which considers that the cellular system evolves towards the state of minimum energy of adhesion. Using the Metropolis Monte Carlo method, we simulated cell spreading on a biomaterial for different values of the cell-cell and cell-biomaterial interactions and found that cell spreading is governed by the difference between half the cell-cell cohesion energy and the cell-biomaterial adhesion energy.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124472714","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}

引用次数: 3

The rough sets based data analysis in small and medium sized enterprises 基于粗糙集的中小企业数据分析

2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5873032

V. Brtka, E. Brtka, Visnja Ognjenovic, I. Berkovic

引用次数: 0

Design of a system architecture for support of collaborative policy modelling processes 为支持协作策略建模过程而设计的系统架构

2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5872998

P. Butka, M. Mach, K. Furdík, J. Genci

引用次数: 4

Numerical simulation of a self-tuning control structure applied on double winded induction machine's excitation 双绕组感应电机励磁自整定控制结构的数值模拟

2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5873074

I. Szeidert, I. Filip, I. Borza, C. Vașar

引用次数: 1

Implementation of hardware-in-the-loop system for drum-boiler-turbine decoupled multivariable control 汽包-锅炉-汽轮机解耦多变量控制的硬件在环系统实现

2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5872971

Mihai Iacob, G. Andreescu

{"title":"Implementation of hardware-in-the-loop system for drum-boiler-turbine decoupled multivariable control","authors":"Mihai Iacob, G. Andreescu","doi":"10.1109/SACI.2011.5872971","DOIUrl":"https://doi.org/10.1109/SACI.2011.5872971","url":null,"abstract":"This paper focuses on developing a hardware-in-the-loop (HIL) system for a boiler-turbine process, employing decoupled adaptive control based on gain scheduling technique. The used model is a 3×3 non-linear strongly coupled system adapted to fit a real thermal power plant of 16 MW. The main purpose of this work lies in implementing, comparing and validating the proposed HIL method over classic simulation methods applied on the present complex structure, rather than analyzing control system performance (which was studied in a previous paper). The proposed investigation contains two sections for integration: i) simulation environment for the boiler-turbine process carried out using Labview running on a PC under a general purpose operating system, and ii) control algorithms implemented on industrial real-time Siemens programmable logic controller (PLC). The control algorithms are made in two different ways: by Labview Virtual Instruments (VI) on PC, and by ladder-logic program on PLC, for comparison purpose. Data exchange between parties is provided by an OLE for process control server (OPC Server) at the software level, and by an Industrial Ethernet bus at the physical level. The synchronization between PLC and PC, which does not have a real-time operating system, was a challenge. Test results show that the proposed HIL method is validated even in these conditions.","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114983769","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}

引用次数: 10

Hierarchical FCA-based conceptual model of text documents used in information retrieval system 信息检索系统中基于层次fca的文本文档概念模型

2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5872999

P. Butka, J. Pócsová

{"title":"Hierarchical FCA-based conceptual model of text documents used in information retrieval system","authors":"P. Butka, J. Pócsová","doi":"10.1109/SACI.2011.5872999","DOIUrl":"https://doi.org/10.1109/SACI.2011.5872999","url":null,"abstract":"Searching for relevant documents in large sets of documents is one of the key tasks in the areas of semantic web and knowledge technologies. This paper deals with analysis and design of improvement for information retrieval (IR) using specific conceptual model automatically created from semantically non-annotated set of text documents. This conceptual model combines locally applied Formal Concept Analysis (FCA) and agglomerative clustering of particular models into one structure, which is suitable to support information retrieval process and can be combined with standard full-text search. Formal Concept Analysis (FCA) is one of the approaches which can be applied in process of conceptual modeling in domain of text documents. Extension of classic FCA (binary table data) is one-sided fuzzy version that works with real values in the object-attribute table (document-term matrix in case of vector representation of text documents). In our approach, starting set of documents is decomposed to smaller sets of similar documents with the use of some partitional clustering algorithm. Then one concept lattice is built for every cluster using FCA method and these FCA-based models are combined to hierarchy of concept lattices using agglomerative clustering algorithm. Finally, we define basic details and methods of IR system that combines standard full-text search and conceptual search (using extracted concept hierarchy).","PeriodicalId":334381,"journal":{"name":"2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129674162","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}

引用次数: 5

Handling internal complexity in highly realistic agent-based models of human behaviour 在高度现实的基于代理的人类行为模型中处理内部复杂性

2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5873089

L. Hluchý, M. Kvassay, Stefan Dlugolinsky, B. Schneider, H. Bracker, B. Kryza, J. Kitowski

引用次数: 7

Interpretation of mammograms with rotation forest and PCA 用旋转森林和PCA解释乳房x线照片

2011 6th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI) Pub Date : 2011-05-19 DOI: 10.1109/SACI.2011.5873068

J. Novakovic, A. Veljovic

引用次数: 4