家用电子产品维修工(中级)职业技能鉴定二次命题的探讨

本文结合十几年来在家用电子产品维修工鉴定考评中遇到的实际问题,结合现代家用电子产品、测量仪器、仪表发展趋势,指出题库在实际考评中出现的问题,提出技能鉴定考评工作二次命题的方法,以及二次命题注意的问题,促使考评工作顺利进行。

Applying Analytical Derivative and Sparse Matrix Techniques to Large-Scale Process Optimization Problems

The performance of analytical derivative and sparse matrix techniques applied to a traditional dense sequential quadratic programming (SQP) is studied, and the strategy utilizing those techniques is also presented.Computational results on two typical chemical optimization problems demonstrate significant enhancement in efficiency, which shows this strategy is promising and suitable for large-scale process optimization problems.

浅析命题结构对于隐喻性语篇意义的动态建构

命题结构是使隐喻性语篇中的各个隐喻表达式产生意义连贯的奥秘,本文分析命题在其中的集中性、层级性和延展性,并指出各级命题是构建隐喻性语篇意义的意念框架,创设了语篇意义的的向心性、系统性和完形性。