A quadratic programming method for optimal degree reduction of Bézier curves with G1-conitnuity

This paper presents a quadratic programming method for optimal multi-degree reduction of Bézier curves with G1-continuity. The L2 and l2 measures of distances between the two curves are used as the objective functions. The two additional parameters, available from the coincidence of the oriented tangents, are constrained to be positive so as to satisfy the solvability condition. Finally, degree reduction is changed to solve a quadratic problem of two parameters with linear constraints. Applica     

Portfolio Selection Model with Derivative Securities

Traditional portfolio theory assumes that the return rate of portfolio follows normality ,However,this assumption is not true when derivative assets are incorporated,In this paper a portfolio selection model is devel-oped based on utility function which can captue asymmetries in random variable distributions.Other realistic conditions are also considered ,such as liabilities and integer decision variables,Since the resulting model is a complex mixed-integer nonlinear programming problem ,simulated annealing algorithm is applied for its solution.A numerical example is given and sensitivity analysis is conducted for the model.     

非光滑半无限规划调节熵函数法

对一类非光滑半无限规划,利用调节熵函数性质,得到两种算法,并分别讨论了它们的收敛性·     

包含r-invex函数的连续时间最优化问题

Antczak提出了一类非凸的可微函数并将其称为r-invex函数,它是invex函数的一种推广。论文定义了一类KKT-r-invex函数,讨论了该类函数的一些性质,并将其应用到连续时间非线性最优化问题(CNP)中,从而获得了Karush-Kuhn-Tucker点是全局最优解的一个充分必要条件。论文的主要结果推广了已有的相应结果。     

Microsoft Agent技术在英语教学中的应用

介绍了Microsoft公司开发的Agent控件的特点、组成、功能和相关网络资源，并以一个使用Agent朗读英语文本的实例说明了如何使用Visual Basic6．0编程操纵Agent控件。     

JavaBeans与组件重用

总结了代码组件重用这种新的程序设计范型，研究了基于Java的代码组件重用技术Jav-aBeans，讨论了如何开发可重用的代码组件Bean．     

Sensors,programming and devices in Art Education sessions. One case in the context of primary education / Sensores,programación y dispositivos en sesiones de Educación Artística. Un caso en el contexto de Educación Primaria

The pedagogical integration of computing is interesting in educational contexts based on the contributions of Seymour Papert and Wing’s concept of computational thinking. Integrating arts in education can lead to the design of activities using Scratch combined with devices. The main goal is to evaluate the integration of computational thinking in art education making use of technological resources, sensor cards and minicomputers, with a student-centred pedagogical approach. This research assesses the results of a control group of 35 students and an experimental group of 109 students in four different schools, using Mann-Whitney’s U-test for independent samples assessing ‘Active Learning’, ‘computational concepts’ and ‘fun’ scales. Applying data triangulation, and consistent with design-based research, the results of interviews and focus groups reinforced the results obtained in the aforementioned test, providing validity to the study. There are advantages regarding student interest, motivation and commitment related to programming technologies in art and education, particularly pedagogical sessions with music. Handling devices, sensors and Raspberry Pi provides participating students with a factor of commitment and enthusiasm, with significant improvements. Working with coding and devices brings an additional advantage in the development of computational thinking and digital competence. The results show an increase in creativity and artistic competence related to the ability to create music from the activities and technological resources described in the technological intervention.     

无约束多目标规划的非单调信赖域算法

本文提出了无约束多目标规划的一类非单调信赖域算法．并证明了算法的全局收敛性．     

学习《数据结构》方法初探

从《数据结构》这门课的特点出发,从本质入手,对这门课的学习方法做一初步探讨,从而为正在学习或将要学习这门课的人们提供帮助。     

提高数控编程课教学质量的探索

数控编程是一门新兴的、综合性、实践性较强的学科,要通过有限的课堂教学提高学生的数控理论知识水平,通过教学方法的改变提高学生的接受能力。要在课堂的理论教学中引入新的理念和方法的探索,提高教学质量,为培养紧缺人才做出贡献。