{"title":"A spatial approach in analyzing the structure and dynamics of the Romanian GDP","authors":"Renata-Graziela Boar, A. Iovanovici, H. Ciocarlie","doi":"10.1109/SACI.2014.6840072","DOIUrl":"https://doi.org/10.1109/SACI.2014.6840072","url":null,"abstract":"Modern economies are highly dynamical systems with states described by a vast amount of parameters having a lot of uncertainties and in a state of precarious equilibrium. Our research is geared towards applying techniques at the cross roads between econometrics, statistics and graph theory in order to improve the tools for analyzing the key factors that influence the state of the economy as seen through the gross domestic product. The novelty of our approach is characterized by decomposition of the key sectors of the GDP and building a spatial representation of the relationships between them in the form of a complex graph.","PeriodicalId":163447,"journal":{"name":"2014 IEEE 9th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126393803","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":"Influence of complexity relaxation and convex hull manipulation on LMI based control design","authors":"Alexandra Szöllosi, P. Baranyi","doi":"10.1109/SACI.2014.6840094","DOIUrl":"https://doi.org/10.1109/SACI.2014.6840094","url":null,"abstract":"The paper investigates how the complexity and the convex hull determined by the vertexes of the TP model representation of a given quasi Linear Parameter Varying state-space model influence the stable parameter region achievable via Linear Matrix Inequality based control design. The paper applies the Relaxed TP model transformation based Control Design Framework that supports both the complexity-accuracy trade-off of the TP model representation and convex hull manipulation separately executable on all components of the control system to be derived. Some specialization and further relaxation of the framework is also proposed here for frequent cases when all components of the system is handled in TP model form. The framework is also extended with a TP model interpolation technique to perform a systematic convex hull manipulation. The overall investigation is done on the complex NATA model of the three degree of freedom aeroelastic wing section model including Stribeck friction. The paper concludes and via the example proofs that both the complexity and the convex hull strongly influences the feasibility of the design. Further the paper proofs that the separate convex hull manipulation of the given model done for controller and the observer design also has to be taken into consideration.","PeriodicalId":163447,"journal":{"name":"2014 IEEE 9th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127927736","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":"Regularization of the differential inverse orientation problem of serial revolute joint manipulators","authors":"D. Drexler, I. Harmati","doi":"10.1109/SACI.2014.6840065","DOIUrl":"https://doi.org/10.1109/SACI.2014.6840065","url":null,"abstract":"Singular configurations arise in the kinematics of revolute joint manipulators, and complicates the solution of the inverse kinematics problem or detoriates motion planning. Singularities arise when solving inverse positioning and inverse orientation as well. In this work the differential inverse orientation problem is transformed into an inverse positioning in a plane, and a one-dimensional inverse orientation problem. The transformed problem is regularized in singular configurations, thus the inverse orientation problem becomes well-conditioned in every configuration. The methodology is illustrated on an Euler wrist.","PeriodicalId":163447,"journal":{"name":"2014 IEEE 9th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125910848","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 data flow graph generation method starting from c description by handling loop nest hierarchy","authors":"P. Arató, G. Suba","doi":"10.1109/SACI.2014.6840074","DOIUrl":"https://doi.org/10.1109/SACI.2014.6840074","url":null,"abstract":"The system-level synthesis of complex hardware or multiprocessing systems starts from some kind of a task description formalized usually in a high-level programming language. For this purpose, the C language is used very often. The further steps of the synthesis procedure are based on some kind of data flow graph representation of the task. Therefore, transforming C-code into a graph representation (as systematic as possible) is crucial step in the whole synthesis procedure. One of the difficulty in formalizing transformation algorithm is that the C-code may contain nested loops. The existing solutions suffer from the difficulty of handling such loop nest hierarchy. We present a method, which can solve systematically the transformation from the C-code into a multi-rate data flow graph representation by handling the nested loops. The main steps of the method are illustrated by a simple example.","PeriodicalId":163447,"journal":{"name":"2014 IEEE 9th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122180950","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":"Educational strategies in adult education","authors":"F. Hegyesi, J. Kopják, R. Osz","doi":"10.1109/SACI.2014.6840064","DOIUrl":"https://doi.org/10.1109/SACI.2014.6840064","url":null,"abstract":"More and more adults return to studying. Many people choose courses provided by universities, some because they want to have a completely different carrier so they train to achieve that goal, or because they need the formal qualification in their current job. Nowadays virtual learning became more and more popular, distance learning on one hand needs to provide high quality and well blended material, on the other hand needs to be easily accessed electronically. These courses require less contact time, therefore is easily accessed by adults. This article presents the opinions of our students, on our online learning opportunities, the University's approach to our adult learners, the expectations of our long distance learners.","PeriodicalId":163447,"journal":{"name":"2014 IEEE 9th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116479425","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":"Virtual laboratory for a remotely operating robot arm","authors":"Marius-Florin Crainic, S. Preitl","doi":"10.1109/SACI.2014.6840043","DOIUrl":"https://doi.org/10.1109/SACI.2014.6840043","url":null,"abstract":"New techniques, like virtual laboratories and the ones remotely operated, improve teaching and learning in the academic society. These allow students to gain experience with real tools, in an intuitive way at a low cost. The paper presents an alternative way of e-learning in robotics that allows the students to simulate and remotely operate the mechanical RV-2AJ robot arm. The main characteristics of the application are a realistic graphics and a wide variety of options which allow the user to easily learn the advanced concepts of control of the robot.","PeriodicalId":163447,"journal":{"name":"2014 IEEE 9th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129977522","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":"Application for robot motion planning","authors":"Gheorghe-Marian Petrisor, Loredana Stanciu","doi":"10.1109/SACI.2014.6840042","DOIUrl":"https://doi.org/10.1109/SACI.2014.6840042","url":null,"abstract":"Robotics is a fascinating field of engineering that provides many opportunities for research. In addition, the evolution of technology in recent years has led to intelligent mobile robots. They can be sent in hard places for humans either because they are dangerous, either because they are difficult to access. The control of these robots, however, is a difficult task that involves knowledge in different areas such as robotics, automation, programming, electronics, etc. The article presents a dedicated application for robot motion planning using the homogeneous decomposition method and Lee's algorithm. The application can be used to simulate real life situations and it is part of a bigger project which intends to create an artificial intelligence control system for mobile robots.","PeriodicalId":163447,"journal":{"name":"2014 IEEE 9th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131072629","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":"Browser-based medical visualization system","authors":"I. Virag, L. Stoicu-Tivadar, E. Amaricai","doi":"10.1109/SACI.2014.6840092","DOIUrl":"https://doi.org/10.1109/SACI.2014.6840092","url":null,"abstract":"The paper describes a medical visualization system suitable for both diagnosis and training in medical practice. The work is using open source frameworks and libraries such as WebRTC (Web Real-Time Communication), JSARToolKit (JavaScript Augmented Reality Toolkit), Three.js and NanoDICOM. The system builds a 3D model from the slices of a patient's DICOM imagistic investigation files, superimposes the model on the body area of interest using Augmented Reality and sends the camera images remotely. The main advantage consists in real-time viewing of imagistic patient information by assisting physicians or medical students. Virtually attaching the 3D model to a specific area of the body allows the model to rotate and move in the same time with the patient. The proposed application does not depend on any operating system and runs inside a browser window without any closed source plug-in, allowing it to be accessed on any computer or mobile device that has a suitable browser.","PeriodicalId":163447,"journal":{"name":"2014 IEEE 9th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130953937","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}
Petra Varsanyi, Zsolt Fegyvari, S. Sergyán, Z. Vámossy
{"title":"Manual microaneurysm detection support with size- and shape-based detection","authors":"Petra Varsanyi, Zsolt Fegyvari, S. Sergyán, Z. Vámossy","doi":"10.1109/SACI.2014.6840093","DOIUrl":"https://doi.org/10.1109/SACI.2014.6840093","url":null,"abstract":"The goal of this paper is to detect visible microaneurysms in retina using size and shape. To achieve the desired goal multi-stage image processing techniques are used. The vascular network and the red regions are highlighted using morphological methods, so these can be segmented with region growing algorithms. Mask is generated that contains only the blood vessels. The red blobs of original images are classified using the generated binary image and their produced skeleton. Our goal is to detect as many as possible microaneurysms taking their shape and size into account. Experiments with manual settings on the test images showed approx. 50% of detection performance, and it can be further improved by development of pre-processing and increasing classification criteria. The developed system can help the manual evaluation of microaneurysms, hence can accelerate of the work of doctors.","PeriodicalId":163447,"journal":{"name":"2014 IEEE 9th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123613157","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":"Data-driven Model-Free Adaptive Control of twin rotor aerodynamic systems","authors":"Raul-Cristian Roman, M. Radac, R. Precup","doi":"10.1109/SACI.2014.6840079","DOIUrl":"https://doi.org/10.1109/SACI.2014.6840079","url":null,"abstract":"This paper proposes data-driven Model-Free Adaptive Control (MFAC) algorithms for a Multi Input-Multi Output (MIMO) twin rotor aerodynamic systems. The azimuth and pitch position control are carried out using a MIMO control system structure with two control loops, one for each axis of motion. A set of experimental results on laboratory equipment is given to show the ability of the MFAC algorithms to control the mechanical ensemble even without decoupling and in spite of disturbances.","PeriodicalId":163447,"journal":{"name":"2014 IEEE 9th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127315683","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}