Geometric modeling (Computer Science)

The purpose of this research is the analysis using meta-analysis of studies in the field of Educational Technology in Turkey and in the field is to demonstrate how to get to that trend. For this purpose, a total of 263 studies were analyzed including 98 theses and 165 articles published between 2010-2018. Purpose sampling method was used when selecting publications. In the research, while selecting articles and Technology used in journals. Publications have been reviewed under 11 criteria. Index, year of publication, research scope, method, education level, sample, number of samples, data collection methods, analysis techniques, and research tendency, research topics in Educational Technology Research in Turkey has revealed. The data is interpreted based on percentage and frequency and the results are shown using the table.

Human Interaction in meetings is one of the famous fields of social dynamics. Meeting is integral part of every organization. In this, meeting outcome is extracted using tree based approach. Meetings contents or conversation are available in forms such as audio, video and text. In this, pattern of meeting is extracted from text document. An interaction is represented in the form of tree. Meeting Output is generated using data mining technique. Firstly the contents are filtered, extracted and steamed. Secondly classification is done into six categories propose, comment, acknowledgement, request Info, ask Opinion, pos Opinion, and neg Opinion. Next the interaction tree is constructed which represent the interaction flow of meeting. Finally the meeting output is generated from interaction tree using frequent pattern mining algorithm. The behavior of person is determined which includes a person who proposed a lot of ideas, a person with positive or negative attitude.

RapidMiner is a software for machine learning, data mining, predictive analytics, and business analytics. The server will record large web log files when user visits the website. Extracting knowledge from such huge data demands for new methods. In this paper, we propose a web usage mining method with RapidMiner. At first, the redundant files in log file are deleted by Matlab and then we mines web log which has been pretreated with RapidMiner, it obtains the custom of different user to visit the website by processing and analyzing log file, and mines unusual rules, and provides the reference for the policy decision and construction of website. Experimental result analysis show that, applying RapidMiner in web usage mining, will obtain frequent model which user visits the website, manage to optimize the website structure and recommends for users.

Computer-aided technologies (CAx) mean the use of computer technology to aid in the design, analysis and manufacture various products. International Journal of Computer-Aided technologies (IJCAx)  is an open access, peer-reviewed journal that publishes articles which contribute new results in all areas of Computer Aided technologies such as CAD, CAM, CAIM,CAR, CARD, CASE etc. The journal focuses on all technical and practical aspects of Computer Aided technologies. The goal of this journal is to bring together researchers and practitioners from academia and industry to focus on advanced CAx tools and establishing new collaborations in these areas. Authors are solicited to contribute to this journal by submitting articles that illustrate research results, projects, surveying works and industrial experiences that describe significant advances in all Computer Aided technologies

Order placingis a crucial phase of lifecycle of a Mass-customizable product and seeks improvement in Mechanical industry. 'Product Configurator' is a good solution to bring in data transparency and speed up the process. Configuration tools arebeing used on a very small scale,reasons being lack of awareness and dearer costs of existing tools. In this research work a product configurator is developedfor Hydraulic Actuator (HA).This method uses Applicable Programing Interface (API) of a CAD tool coupled with Visual Basics (VB) and MS Excel.Itis a standaloneapplication of VB and its integration into web portal can be the future scope. The final aim was to reduce time delay at CRM phase,bring more transparency in the ordering system and to establish a method which, small and medium scale enterprises canafford. Trails on the tool developed generated Part-Assembly drawings, BOM and JT files in moments.

We have researched a gondola-typed building façade maintenance robot system. Its main goal is to paint reinforced concrete walls as fast and wide as possible. We applied a horizontal array of painting spray nozzles which have uniform heights. In order to apply them to the gondola robot, a painting scenario is designed. Basically, when the gondola robot goes from the bottom to the top of the wall, wall shape recognition is executed. While it goes down, the nozzles are turned on and off in accordance with the wall shape.

Many phonetic phenomena that occur in connected speech are classified as phonetic periphery where anything can happen. A well-known convenient way to fix any phonetic phenomenon using certain symbols is transcription. The current paper aims at showing the model of predicting allophones by coordinating a number of factors that determine the choice of a particular allophone and visualizing the result changing certain letters into corresponding IPA symbols. Free Pascal compiler and Geany editor are used for programming purposes. The model is created for American English. It is tested for tap and glottal burst, the latter being one of the three glottalization patterns. The difference of the combination of factors for purely linguistic analysis and for computer programming is explained. We demonstrate (i) the framework for integrating separate blocks each dealing with one phenomenon (ii) a block for tapping which is almost finalized and a part of a block on glottalization, particularly p...

This article proposes a technique for the geometrically stable modeling of high-degree B-spline curves based on S-polygon in a float format, which will allow the accurate positioning of the end points of curves and the direction of the tangent vectors. The method of shape approximation is described with the purpose of providing geometrical proximity between the original and approximating curve. The content of the notion of a "harmonious, regular form" of B-spline curve's S-polygon in a float format is revealed as a factor in achieving a high-quality of fit for the generated curve. The expediency of the shape modeling method based on S-polygon in a float format at the end portions of the curve for quality control of curve modeling and editing is substantiated. The results of a comparative test are presented, demonstrating the superlative efficacy of using the Mineur-Farin configuration for constructing constant and monotone curvature curves based on an S-polygon in a float format. The findings presented in this article confirm that it is preferable to employ the principle of "constructing a control polygon of a harmonious form (or the Mineur-Farin configuration) of a parametric polynomial" to a B-spline curve's S-polygon in a float format, and not to a B-polygon of the Bézier curve. Recommendations are given for prospective studies in the field of applying the technique of constructing a high-quality B-spline curves to the approximation of log-aesthetic curves, Ziatdinov's superspirals, etc. The authors of the article developed a technique for constructing smooth connections of B-spline curves with ensuring a high order of smoothness of the composite curve. The proposed techniques are implemented in the FairCurveModeler program as a plug-in to engineering CAD systems.

Order placingis a crucial phase of lifecycle of a Mass-customizable product and seeks improvement in Mechanical industry. 'Product Configurator' is a good solution to bring in data transparency and speed up the process. Configuration tools arebeing used on a very small scale,reasons being lack of awareness and dearer costs of existing tools. In this research work a product configurator is developedfor Hydraulic Actuator (HA).This method uses Applicable Programing Interface (API) of a CAD tool coupled with Visual Basics (VB) and MS Excel.Itis a standaloneapplication of VB and its integration into web portal can be the future scope. The final aim was to reduce time delay at CRM phase,bring more transparency in the ordering system and to establish a method which, small and medium scale enterprises canafford. Trails on the tool developed generated Part-Assembly drawings, BOM and JT files in moments.

We present a new algorithm for the automatic one-shot generation of scattered node sets on irregular 2D and 3D domains using Poisson disk sampling coupled to novel parameter-free, high-order parametric Spherical Radial Basis Function (SBF)-based geometric modeling of irregular domain boundaries. Our algorithm also automatically modifies the scattered node sets locally for time-varying embedded boundaries in the domain interior. We derive complexity estimates for our node generator in 2D and 3D that establish its scalability, and verify these estimates with timing experiments. We explore the influence of Poisson disk sampling parameters on both quasi-uniformity in the node sets and errors in an RBF-FD discretization of the heat equation. In all cases, our framework requires only a small number of "seed" nodes on domain boundaries. The entire framework exhibits O(N) complexity in both 2D and 3D.

As the name imply prolonged surfaces to extract most amount of heat via out the surfaces. There are such a lot of researcher check out the heat transfer from the C I engine by using the use of fins, however nobody can calculate the top temperature of fin and to formulate the result by way of using Finite Element approach. It's far very vital to transfer warmness from the C I engine .The warmth transfer coefficient may be decided the usage of superior FEA codes which include fluid mechanics .Those simplified terms constitute a aggregate of several elements ,which include powerful floor vicinity ,lateral fin conduction ,boundary layer formation and cloth conductivity. It's miles very difficult to modeled a hoop form fin .Each pin should be individually discredited ,increasing the modeling time significantly .On this studies we have to used simulation application will be advanced for predicting and optimizing thermal performance of different sorts of fin component like round fin, axial fin and we compare ring form fin with triangular profile .The end result of the ring form fin can be additionally in comparison with the ones axial fins and ring shape fin with triangular profile the use of finite detail evaluation software advanced on Ansys software. Apart from this we additionally look into the temperature size and thermal pressure distribution.

Superspirals include a very broad family of monotonic curvature curves, whose radius of curvature is defined by a completely monotonic Gauss hypergeometric function. They are generalizations of log-aesthetic curves, and other curves whose radius of curvature is a particular case of a completely monotonic Gauss hypergeometric function. In this work, we study superspirals of confluent type via similarity geometry. Through a detailed investigation of the similarity curvatures of superspirals of confluent type, we find a new class of planar curves with monotone curvature in terms of Tricomi confluent hypergeometric function. Moreover, the proposed ideas will be our guide to expanding superspirals.

A large no. of automobile companies finding a convinient way to manage design changes with the use of various PLM techniques. Change in any product is something that should occur on timely basis to match up with customer requirement and cost reduction. The change made in the vehicle designs directly affects various concerned agencies. Automobile Vehicle structures contains thousands of parts and if there is any change is occurring in child parts then it becomes important to track that impacted part, propose a solution on that part and release a new assembly structure with feasible changes such that all efforts need to be done for cost reduction.

More and more automobile companies are going for weight reduction of their vehicles for fuel economy and pollution control. At elevated temperatures aluminum sheet alloys 6061 and 7075,  the blank temperature effect on  forming behavior and damage factor of these sheets is the objective of the  present study. In automotive parts the aluminum alloys have good corrosion resistance, high strength to weight ratio and low formability of aluminum sheets limits in some products with complex shapes. The elevated forming process is intended to overcome this problem. An insight into such a study will throw light on the different temperatures required by the above materials when they are made into TWBs. Using ANSYS a series of simulations were carried out in the present investigation on the formability behaviour of deep drawing of aluminium alloys in the temperature range 200-500°C.

We develop a new symbolic-numeric algorithm for the certification of singular isolated points, using their associated local ring structure and certified numerical computations. An improvement of an existing method to compute inverse systems is presented, which avoids redundant computation and reduces the size of the intermediate linear systems to solve. We derive a one-step deflation technique, from the description of the multiplicity structure in terms of differentials. The deflated system can be used in Newton-based iterative schemes with quadratic convergence. Starting from a polynomial system and a small-enough neighborhood, we obtain a criterion for the existence and uniqueness of a singular root of a given multiplicity structure, applying a well-chosen symbolic perturbation. Standard verification methods, based eg. on interval arithmetic and a fixed point theorem, are employed to certify that there exists a unique perturbed system with a singular root in the domain. Applications to topological degree computation and to the analysis of real branches of an implicit curve illustrate the method.

Cloud computing provides the facility for the business customers to scale up and down their resource usage based on needs. This is because of the virtualization technology. The scheduling objectives are to improve the system's schedule ability for the real-time tasks and to save energy. To achieve the objectives, we employed the virtualization technique and rolling-horizon optimization with vertical scheduling operation. The project considers Cluster Scoring Based Task Scheduling (CSBTS) algorithm which aims to decrease task's completion time and the policies for VM's creation, migration and cancellation are to dynamically adjust the scale of cloud in a while meets the real-time requirements and to save energy.

The purpose of this research is the analysis using meta-analysis of studies in the field of Educational Technology in Turkey and in the field is to demonstrate how to get to that trend. For this purpose, a total of 263 studies were analyzed including 98 theses and 165 articles published between 2010-2018. Purpose sampling method was used when selecting publications. In the research, while selecting articles and Technology used in journals. Publications have been reviewed under 11 criteria. Index, year of publication, research scope, method, education level, sample, number of samples, data collection methods, analysis techniques, and research tendency, research topics in Educational Technology Research in Turkey has revealed. The data is interpreted based on percentage and frequency and the results are shown using the table.

We investigate methods of using constraint--based modeling in a free--form curve and surface enviroment. In this work we concentrate on a problem of maintaining the curve-surface incidence relation while the curve is edited. We formulate the relation between the degrees of freedom (DOF) and parameters (control points of the surface and curve resp.) as an explicit functional prescription. We show how the polynomial composition algorithm based on blossoming and a data structures for efficient storage of intermediate results, significantly speeds up the computation. We also discuss how to insert new DOFs, if the incidence condition cannot be satisfied, and sketch how a common solution space for several constraints of this type can be found. Keywords: Incidence, Constraints, Free--form surfaces and curves, Algorithm, Blossoming, B--spline algebra. 1 Introduction The relational modeling paradigm has achieved much progress in recent years especially in 2--D. Editing ge- Tel. ++49 3677 69...

Computer-aided technologies (CAx) mean the use of computer technology to aid in the design, analysis and manufacture various products. International Journal of Computer-Aided technologies (IJCAx)  is an open access, peer-reviewed journal that publishes articles which contribute new results in all areas of Computer Aided technologies such as CAD, CAM, CAIM,CAR, CARD, CASE etc. The journal focuses on all technical and practical aspects of Computer Aided technologies. The goal of this journal is to bring together researchers and practitioners from academia and industry to focus on advanced CAx tools and establishing new collaborations in these areas. Authors are solicited to contribute to this journal by submitting articles that illustrate research results, projects, surveying works and industrial experiences that describe significant advances in all Computer Aided technologies

Simplicial complexes are extensively used for discretizing digital shapes in several applications. A structural description of a non-manifold shape can be obtained by decomposing the input shape into a collection of meaningful components with a simpler topology. Here, we consider a unique and dimension-independent decomposition of a non-manifold shape into nearly manifold components, known as the Manifold-Connected (MC-) decomposition. We present the Compact Manifold-Connected (MC-) graph, an efficient graph-based representation for the MC-decomposition, which can be combined with any topological data structure for encoding the underlying components. We present the main properties of this representation as well as algorithms for its generation. We also show that this representation is more compact than several topological data
structures, which do not explicitly describe the non-manifold structure of a shape.

Morphologically, both classic and landmark-based morphometry and meristic analyses of 241 specimens
of Merluccius, along with the re-examination of six paratype specimens of Merluccius hubbsi, the holotype and three paratypes of Merluccius patagonicus and the syntype of Merluccius australis revealed the presence of only two species of Merluccius in Argentinean waters. Internal structures (hyomandibula, urohyal and sagitta otolith) of M. hubbsi were compared to those reported for M. patagonicus and were shown to have identical morphology. Type specimens of M. patagonicus showed a complete overlap in morphometric and meristic characters with M. hubbsi, whereas M. australis had a greater number of second dorsal and anal-fin rays, and more lateral-line scales. In addition, M. australis had a smaller eye and longer snout than M. hubbsi and M. patagonicus. The results indicate that there is no evidence for a third hake species in Argentinean waters. Merluccius patagonicus is a synonym of M. hubbsi.

© 2011 The Authors Journal of Fish Biology © 2011 The Fisheries Society of the British Isles.

Key words: landmarks; M. australis; M. hubbsi ; M. patagonicus; Patagonia.

Superspirals include a very broad family of monotonic curvature curves, whose radius of curvature is defined by a completely monotonic Gauss hypergeometric function. They are generalizations of log-aesthetic curves, and other curves whose radius of curvature is a particular case of a completely monotonic Gauss hypergeometric function. In this work, we study superspirals of confluent type via similarity geometry. Through a detailed investigation of the similarity curvatures of superspirals of confluent type, we find a new class of planar curves with monotone curvature in terms of Tricomi confluent hypergeometric function. Moreover, the proposed ideas will be our guide to expanding superspirals.

The advancement in the mobile devices, wireless and web technologies given rise to the new application that will make the voting process very easy and efficient. The E-voting promises the possibility of convenient, easy and safe way to capture and count the votes in an election[1]. This research project provides the specification and requirements for E-Voting using an Android platform. The e-voting means the voting process in election by using electronic device. The android platform is used to develop an e-voting application. At first, an introduction about the system is presented. Sections II and III describe all the concepts (survey, design and implementation) that would be used in this work. Finally, the proposed e-voting system will be presented. This technology helps the user to cast the vote without visiting the polling booth. The application follows proper authentication measures in order to avoid fraud voters using the system. Once the voting session is completed the results can be available within a fraction of seconds. All the candidates vote count is encrypted and stored in the database in order to avoid any attacks and disclosure of results by third person other than the administrator. Once the session is completed the admin can decrypt the vote count and publish results and can complete the voting process.

Computer-aided technologies (CAx) mean the use of computer technology to aid in the design, analysis and manufacture various products. International Journal of Computer-Aided technologies (IJCAx)  is an open access, peer-reviewed journal that publishes articles which contribute new results in all areas of Computer Aided technologies such as CAD, CAM, CAIM,CAR, CARD, CASE etc. The journal focuses on all technical and practical aspects of Computer Aided technologies. The goal of this journal is to bring together researchers and practitioners from academia and industry to focus on advanced CAx tools and establishing new collaborations in these areas. Authors are solicited to contribute to this journal by submitting articles that illustrate research results, projects, surveying works and industrial experiences that describe significant advances in all Computer Aided technologies

This paper presents the point of view of a designer about declarative modelers. We propose a model of this point of view. Our approach is based on the work we have done to develop some of our declarative modelers. It takes into account the main functions used by a designer in these modelers. We explain also the scene-building process and we present working processes that can be used with those modelers.

We argue that B-spline solids are effective primitives for the animation of physically-based deformable objects. After reviewing the mathematical formulation of B-spline solids, we describe how to quickly display and modulate their shapes. We apply our ideas to muscle modelling and provide techniques for initial shape definition and subsequent shape deformation. Data-fitting techniques are developed to build muscles from profile curves or from contour data taken from medical images. By applying a spring-mass model to the resulting B-spline solid, we have transformed a static model to a deformable one. The 3-D parameterization of the solid allows us to model microstructures within the solids such as fibre bundles in a muscle. B-spline solids are powerful and versatile deformable shape primitives that can be used in practical settings, such as the building-blocks of a muscle-based modeller and animation system for anatomical design.