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Manifold is a generic high-level system design language designed to resemble modern functional programming languages. It is intended to be usable in a variety of design domains that can be conceptualized with components, connectors, ports, and constraints. Domain-specific backends exist for microfluidic devices and digital logic circuits. In Manifold 2.0 we have enhanced both the frontend language...
This paper introduces how minimum variance control principles are applied to the control of human emotion - excitement signal. We use changing distance-between-eyes in a virtual 3D face as a control signal. A minimum variance control law is synthesized by minimizing control quality criterion in an admissible domain. Admissible domain is composed of input signal boundaries. Relatively high control...
The ABET engineering criteria was first formulated and introduced to the American education system in the middle 1990s. The ABET accreditation system defines an engineering graduate according to Blooms Taxonomy. As a part of the continuing curriculum improvement at Bucknell University, a new junior-level design course has been recently introduced into the curriculum. The course title is ECEG 301:...
The physical process modeling of an estuary is a complex mechanism that comes along with the existence of uncertainty. In contrast, due to significant variability of flows in space and time, an extensive modeling effort must be accommodated with the application of parallelization technology. Therefore, the implication of estuary model parallelization to the model result uncertainty must be examined...
Commercial computer aided design (CAD) tools are single user, thus only allowing one user to contribute to a CAD model at a time. The NSF Center for e-Design, BYU site is developing multi-user plug-ins for commercial CAD systems to extend their functionality to allow multiple users to simultaneously contribute to a collaborative design model. One central issue in developing and working in a multi-user...
This paper presents selected issues connected with the design and implementation of the 6-DOF parallel manipulator driven by permanent magnet brushless DC motors. The consideration of platform kinematics structure, computer design and simulation of mechanical framework as well as building and utilization of the reduced-scale physical are presented. The development, implementation and testing of the...
This paper introduces the problem of computing the shortest Euclidean path of a plural number of sequenced spherical balls in 3D. Based on the author's previous works and the technique of pair-wisely local optimization, a heuristic algorithm was proposed to solve the problem. Empirical results are competing with random selection and the nearest neighbor search algorithm. The experiments have shown...
The purpose of this research is to build a real-time flight simulator for quadrotor systems and verify if the simulator runs in real time. The simulator was constructed by writing the mathematical models of quadrotor dynamic in MATLAB/Simulink. Using xPC Target software environment, three PCs were set up to work in sync to make the simulation run in real time. This paper shows several simulation results...
this paper proposes a algorithm to generate the panoramic view from 360 ¡ãfisheye images based on angular fisheye projection model. Firstly, the image plane will be mapped to the view plane, the sphere plane, to obtain the coordinates of spherical points. Then use the angular fisheye projection model to get fisheye images' radius. Secondly, calculate the coordinates of fisheye images' points with...
Building information technology includes production process information technology and management information technology. The first one can improve efficiency and productivity, and the other one can improve the business treatment efficiency and management level. In this paper, combining with the application requirement of building construction, application research o virtual simulation technology...
Geological Section (GS) map is a kind of fundamental material for studying geological stratum, rock mass and geological structures, which can provide the basic information for geological staff to recognize and analyze geological phenomenon. However, it's not so easy to automatically generate 3D geological sections for complex geological stratum, especially geological sections with stratal pinch-out...
A computer-aided geometry approach for solving type design and performance analysis of 4-DOF parallel mechanism is put forward. By using the geometric constraint, the dimension constraint, the dimension equation and the dimension driving techniques of CAD, some simulation mechanisms of the novel 4-DOF parallel robot are created. When the driving dimensions of driving limbs are modified, the configuration...
This paper presents a solid blending method with up to curvature continuities. The method is based on the solution to a vector-valued sixth order partial differential equation containing three parametric variables subjected to solid blending boundary constraints. A simple and efficient method is developed to solve the partial differential equation. The shape of the created blending solids is manipulated...
There are lots of valuable ancient architectures in China, digitizing the architectures is very meritorious. 3D laser scanner can help people get 3D information of buildings by means of points cloud. For better displaying the buildings on computer screen, 3D modeling is necessary. In China, most of ancient architectures' walls, floors and roofs are flat, which can be regard as plane. This paper puts...
This paper describes a fast collision detection algorithm based on projection and parallel. We make irregular three-dimensional objects project to be regular two-dimensional objects in two-dimensional plane and carry on collision detection by combining with spatial projection transformation method, This method improved Ming C. Jin algorithm and Lin-Canny algorithm, so that three-dimensional objects...
Modeling is mathematical representation of a process, device, or concept by means of a number of variables that are defined to represent the inputs, outputs, and internal states of the device or process, and a set of equations and inequalities describing the interaction of these variables. It is a way to visualize a physical phenomenon using mathematical equations to describe its behavior during a...
To make the intelligent virtual agent become more natural and believable, giving her emotion ability is very important. According to Basic Emotion Theory and Cognitive Evaluation Theory in Psychology, it proposes an emotion model based on Fuzzy Rules. Firstly, emotion factor is generated according to the emotion elicited rules based on Fuzzy IF-THEN rules. Then a nonlinear function restricted by personality,...
An important ability of computer network operation exercise is to implement a large scale worm spreading events in short time. A spread action language is given. This Language can achieve actions of worms such as gaining access, transferring and activating in simulation environment. Experiments in GTNets and VM platform indicated the language emulate intrusion actions spreading effectively in operation...
Munsell color model is a perfect expression system that can match well with the thinking law of designers. Implementation of Munsell color model in computer can greatly improve the existing color aid systems. The key techniques for Munsell visualization are the accurate conversion from HVC model to RGB model. Using the neural network technologies, we analyzed the data conversion process for dealing...
In this research, we developed a real-time fluid simulator for a haptic interface to display a virtual environment including 3-dimensional fluid by using smoothed particles hydrodynamics (SPH). SPH is a type of particle method and is suitable for a fast computation; however, it is difficult to incorporate sufficient fluid incompressibility in SPH for simulating a real-time process. This is because...
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