Detecting and estimating motions of fast moving objects has many important applications. However, most existing motion estimation techniques have difficulties in handling large motions in the scene. In this paper, the...
详细信息
Java middleware mechanisms, such as Java RMI or CORBA implementations, do not support thread coordination over the network: synchronizing on remote objects does not work correctly and thread identity is not preserved ...
详细信息
In the past, CTH (a finite volume, shock physics code) has been coupled with different Lagrangian finite element codes like Pronto3D and LS-Dyna, to solve blast-structure interaction problems. In many situations, a tw...
详细信息
ISBN:
(纸本)0769522599
In the past, CTH (a finite volume, shock physics code) has been coupled with different Lagrangian finite element codes like Pronto3D and LS-Dyna, to solve blast-structure interaction problems. In many situations, a two-way coupling of these codes is unnecessary. Specifically, when the deformation of the structure has little impact on the developing blast, a one-way coupling is sufficient. Unfortunately, when the structure is complex, and particularly when the model contains shell elements, accurately generating the load curves for the finite element input can be difficult. A generalized method for generating the necessary load curves for the finite element input from CTH has been developed at ARL by using the Interdisciplinary computing Environment (ICE). While others have successfully coupled CTH with finite element codes in the past, this method accurately represents the finite elements model's geometry on the Eulerian mesh and can be applied to any code with a pressure vs. time element loading capacity. An accurate representation of the finite element model is inserted into the CTH mesh even if the model contains shell elements. Using this method, an example problem of a land mine interacting with a complex vehicle structure is presented.
The Fast Multipole Method (FMM) and Multilevel Fast Multipole Algorithm (MLFMA) are successfully developed to solve electrically very large size of perfectly electric conducting objects (PEC). Using the impedance boun...
详细信息
The Shortest Path Tree (SPT) construction is a critical issue to the high performance routing in an interior network using link state protocols, such as Open Shortest Path First (OSPF) and IS-IS. In this paper, we pro...
详细信息
The Shortest Path Tree (SPT) construction is a critical issue to the high performance routing in an interior network using link state protocols, such as Open Shortest Path First (OSPF) and IS-IS. In this paper, we propose a new efficient algorithm for dynamic SPT update to avoid the disadvantages (e.g. redundant computation) caused by static SPT update algorithms. The new algorithm is based on the understanding of the update procedure to reduce redundancy. Only significantly elements that contribute to the construction of new SPT from the old one will be focused on. The efficiency of our algorithm is improved because it only pay attention to the edges really count for the update process. The running time for the proposed algorithm is maximum reduced, which is shown through experimental results. Furthermore, our algorithm can be easily generalized to solve the SPT updating problem in a graph with negative weight edges and applied to the scenario of multiple edge weight changes.
Today it is common for students to have a handheld or notebook computer in the classroom. As with any form of educational technology, there are challenges for the instructor to make good use of the technology and moti...
详细信息
In this paper, we present a new method for data-driven automatic extraction of endocardial and epicardial contours of the left ventricle in cine bFFE MR images. Our method employs a hierarchical, multi-class, multi-fe...
详细信息
A new hybrid finite-difference time-domain and mixed-potential integral equation method (hybrid FDTD-MPIE) is developed for the modeling of multilayer planar structures with locally inhomogeneous objects. By using equ...
详细信息
The proceedings contain 119 papers. The topics discussed include: the concorde doesn't fly anymore;coupling pair programming/collaborative learning;student culture vs group work in computer science;case studies fo...
详细信息
The proceedings contain 119 papers. The topics discussed include: the concorde doesn't fly anymore;coupling pair programming/collaborative learning;student culture vs group work in computer science;case studies for teaching usability engineering;taking advantage of National Science Foundation funding opportunities;information technology accredition activities;handwritten slides on a tabletPC in a discrete mathematics course;evaluating the effectiveness of a new instructional approach;cryptography and computer science for undergraduates;attribute based compiler implemented using visitor pattern;the relationship between CS Education Research and the SIGCSE community;contemplate sorting with Columnsort;incorporating writing into the CS curriculum;a CS1 course designed to address interests of women;and using game days to teach a multiagent system class.
This poster explores some of the issues associated with teaching computer science to students with dyslexia. Issues associated with both student learning generally and computer science specifically are considered. The...
详细信息
This poster explores some of the issues associated with teaching computer science to students with dyslexia. Issues associated with both student learning generally and computer science specifically are considered. The accessibility of teaching materials made available through virtual learning environments (VLEs) is addressed. Twelve resulting guidelines particularly relevant to students with dyslexia are outlined. More specifically to computer science, the issues associated with programming are explored through the development of a mapping of the features of dyslexia to the tasks involved in writing a computer program. Preliminary evidence, from both the wider dyslexia community with computer programming experience and some early interview results, are presented to both support the mapping and draw out other important issues. This poster describes results generated from a LTSN-ICS Development Fund project, entitled 'Impact of Learning Disability on the Study of computing'. This project seeks to investigate the impact of learning disabilities on students who are following a course of study in the computing curriculum. It looked at how best to deliver materials through the University's Virtual Learning Environment (VLE) and then focused on issues surrounding students with dyslexia and computer programming. The introduction of the Special Educational Needs and Disability Act [1] and the Disability Discrimination Act part IV [2] provides an opportunity and incentive to review teaching and learning methods and see how the needs of the students with special needs are addressed. In the case of a computing department, this should include general aspects, for example accessible provision of e-resources, and also domain specific aspects, for example programming. This poster looks at both of these aspects. Leeds Metropolitan University (Leeds Met.) is a large (37,000 students) university of applied learning, with a policy of widening access to higher education. The School of C
暂无评论