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关键词： animation   class library   data structures  

摘要： SEED is a software tool designed for Java consisting of a class library and a set of simulators to facilitate learning of the main data structures. The educational component is based on an active case-solving methodology accompanied by a pedagogical strategy. This strategy allows for the development of a multilayer-model-programming work for the construction of basic and advanced applications in real domains and for integration of its use, development and operation assessment with data structures. The evaluation results of SEED as a pedagogical mediator in the issue of binary trees is presented. The evaluation indicates that students prefer to use SEED due to its simplicity and attractive GUIs which facilitate data structures learning.

关键词： Mass-customization   EEG headsets   CAD   Parameterized design   3D anthropometry   Statistical shape models  

摘要： The human body is a complex biomechanical system that exhibits many variations. Wearable products should be both functional and comfortable. They require a close and accurate fit to the body of the end user. Current approaches to design body near products rely on 1D anthropometry and unrealistic manikins, e.g. constructed from simple surfaces such as spheres and cylinders connected by splines. With the uprising of 3D scanning, a myriad of accurate 3D body models becomes available. In this paper we present a framework to use this 3D shape information in the development of wearable products. The key concept that we introduce to achieve this extension, is an enriched shape model: a statistical shape model of the human body that also contains all 1D anthropometric data in it. With enriched shape models, a 3D shape can be parameterized with a given set of anthropometric features. Thus the dense geometric information of an individual's shape can be obtained simply by tuning that individual's anthropometric values. By designing on the generated 3D surface, a product can be obtained that closely fits the individual's shape. We thus extend the method of linking 1D anthropometric data with the dimensions of a product. This results in three design strategies that link both body shape with product geometry: design for collective fit, design for fit within clusters and design for individual fit. Each strategy is explained and studied with the design of wearable EEG headsets that fits the human head. (C) 2018 Elsevier B.V. All rights reserved.

关键词： Manifold-preserving   Edit propagation   Quad-tree data structure   Colorization   Recoloring  

摘要： In this paper, we propose an edit propagation algorithm using quad-tree data structures for image manipulation. First, we use a quad-tree to adaptively group all pixels into clusters. Then, we build a manifold-preserving propagation function based on clusters using locally linear embedding for improved distance. Moreover, we employ an adaptive weight function built on cell corners instead of individual pixels. Because the number of corners is smaller than the number of individual pixels, it results in runtime performance improvement. Finally, the edits of all pixels can be computed by interpolating the edits solved from the clusters. Compared with previous approaches, our method requires less time without sacrificing the visualization quality. Experimental results demonstrate two applications of our algorithm: grayscale image colorization and color image recoloring.

关键词： Dendritic spines   Mixed-effects models   Statistics and numerical data   Data structure  

摘要： Background: Dendritic spine morphology is heterogeneous and highly dynamic. To study the changing or aberrant morphology in test setups, often spines from several neurons from a few experimental units e.g. mice or primary neuronal cultures are measured. This strategy results in a multilevel data structure, which, when not properly addressed, has a high risk of producing false positive and false negative findings. Methods: We used mixed-effects models to deal with data with a multilevel data structure and compared this method to analyses at each level. We apply these statistical tests to a dataset of dendritic spine morphology parameters to illustrate advantages of multilevel mixed-effects model, and disadvantages of other models. Results: We present an application of mixed-effects models for analyzing dendritic spine morphology datasets while correcting for the data structure. Comparison with existing methods: We further show that analyses at spine level and aggregated levels do not adequately account for the data structure, and that they may lead to erroneous results. Conclusion: We highlight the importance of data structure in dendritic spine morphology analyses and highly recommend the use of mixed-effects models or other appropriate statistical methods to deal with multilevel datasets. Mixed-effects models are easy to use and superior to commonly used methods by including the data structure and the addition of other explanatory variables, for example sex, and age, etc., as well as interactions between variables or between variables and level identifiers. (C) 2018 Elsevier B.V. All rights reserved.

标准号: DB61/T 1126-2018

关键词： 数据结构   C语言基础   内容组织   表现形式   编程实践  

摘要： 《数据结构》是计算机学科的一门核心课程。该课程知识和方法对编程能力的提高以及后续课程的学习起着至关重要的作用。教师在教学过程中应激发学生学习的兴趣,合理的组织教学内容和表现方法,使学生打好扎实的理论基础,练好过硬的实践本领。现结合该课程的教学内容,浅谈关于数据结构课程的教学体会和教学方法。

关键词： 一题多解   数据结构   实践教学   教学改革  

摘要： 通过提出一种基于"一题多解"的数据结构实践教学模式,构建"一题多解"的综合性实验项目,并对"一题多解"实践教学模式的设计原则、教学环节和项目案例进行分析和讨论,以期能够对相关教学人员起到一定的参考作用。

关键词： 主要矛盾   成人教育   数据结构   授课  

摘要： 数据结构作为计算机专业的一门基础课程,对学生理解计算机这门学科有着基础性的作用。对以后的系统框架,程序编写等都有至关重要的作用。我认为提高这门课的教学质量,首先要转变观念。这个观念就是成教的学生学习的内容比较肤浅,不需要学习太多的内容。有这个先入为主的观念就不会有积极性去提高教学质量,不会深入研究这门课的如何才有更好的教学效果。不能否认成教的学生有自己的特点,有经验有想法,但时间不固定,这就需要我们成人教育的老师对这门课如何教,如何学有自己思路,不能完全照搬普通高校教材,仅仅进行简化。这篇文章就是我对者们如何在成人教育中如何教授的思考及实施。

关键词： 雷达对抗   乐观策略   适配优化   运行流程   数据结构  

摘要： 针对雷达对抗串行仿真效率较低的问题,分析了并行离散事件的乐观策略在雷达对抗仿真中的特征,根据雷达对抗仿真的特征进行了乐观策略的适配及优化,并设计了乐观策略的运行流程及数据结构,最后以乐观策略对导弹突袭目标的例子进行仿真,其中四核和八核处理器中仿真效率比串行提高63.0%和73.6%,仿真结果证明了乐观策略在雷达对抗仿真中的有效性。

关键词： 概念股   区块   技术内涵   金融领域   去中心化   数据结构   A股市场   数据库  

摘要： 从2017年底到2018年初，从西方到东方，从美国到中国，金融领域的关注者们都在讨论的话题之一就是比特币，而比特币的背后则是近年来兴起的一个新概念——区块链。这种类似数据库的链式数据结构具有去中心化的作用，可以使应用这项技术的领域更具信任度、更客观、更透明。在区块链概念持续走热的情况下，A股市场的相关个股也被搅动，整个板块呈现井喷。这次我们系统性的总结一下相关个股，从几十只个股中甄选出十家相对符合区块链技术内涵的公司，但实际上，从营收角度来看，区块链真的只是停留在“概念”层面。