Convergence analysis of kernel Canonical Correlation Analysis: theory and practice

Canonical Correlation Analysis is a technique for finding pairs of basis vectors that maximise the correlation of a set of paired variables, these pairs can be considered as two views of the same object. This paper provides a convergence analysis of Canonical Correlation Analysis by defining a pattern function that captures the degree to which the features from the two views are similar. We analyse the convergence using Rademacher complexity, hence deriving the error bound for new data. The analysis provides further justification for the regularisation of kernel Canonical Correlation Analysis and is corroborated by experiments on real world data.     

氨合成、醇烃化系统仪表设计中的应用体会

根据湖南安淳高新技术有限公司设计的氨合成与醇烃化系统的工艺与设备要求,提出了该流程几点自控仪表设计选型思路。     

CDMA-VPDN业务故障管控的思路

简单介绍了CDMA-VPDN特点、组网情况和业务，使用事例分析法得出CDMA-VPDN业务故障管控点。从而促进该类故障快速定位和处理。     

A strategy for the risk-based inspection of pressure safety valves

The purpose of a pressure safety valve (PSV) is to protect the life and safety of pressure vessels in a pressurized system. If a weakened PSV fails to function properly, a catastrophic event might occur if no other protective means are provided. By utilizing the as-received test data and statistical analysis of the aging conditions of PSVs in lubricant process units, a risk-based inspection (RBI) system was developed in this study. First of all, the characteristics of PSV were discussed from the practical viewpoint of engineering inspection and maintenance. The as-received test data, which shows obvious PSV damage, will be separated from the data used in the following statistical analysis. Then, the relationship between the aging conditions and the corresponding PSV parameters was analyzed by using the statistical technique—analysis of variance (ANOVA). Finally, a strategy for semi-quantitative RBI is proposed. Also, a definitive estimated inspection interval for every PSV is suggested. The outcome indicated most of the risks result from a few PSVs, for which the corresponding inspection intervals will be shorter than the 2 years in accordance with relative standards and local government regulations.     

Development of a technology mentor survey instrument: Understanding student mentors’ benefits

Agreement on the effectiveness of the technology mentoring approach in addressing educators’ needs for learning different technologies has been growing. Literature on the concept of mentoring in general and technology mentoring specifically has indicated mentoring relationships in different settings provide benefits for the less experienced mentoring partner, while existing literature was limited in providing insights about mentoring from the more experienced partner’s point of view. But, studies have suggested that understanding mentors’ reactions to the experience is necessary to establish sustainable and mutually beneficial mentoring relationships. For this purpose, this study discusses and proposes an assessment framework and an instrument to examine benefits for technology mentors. Considering the lack of similar studies and the absence of an instrument designed specifically to study this subject, we believe that our study will contribute to the knowledge base by providing educators with an assessment strategy and a tool for investigating the benefits gained by the more experienced person (graduate student in our context) benefits in a technology mentoring relationship. In addition, the resulting survey instrument provided along with this study is a valuable tool for those studying technology mentoring. The theoretical foundations, development process of the development of the instrument, and reliability and validity issues are discussed in detail.     

精密直流电压互感器

叙述了仪器的原理及其误差分析,及以此原理研制的一台变比为100/5V,准确度为0.06％的直流电压互感器。     

用气相色谱精确测定大气中的CO_2

在常温常压下，利用汞压进样装置控制进样速度，降低气体样品在定量管中的压力波动，达到了精确测定的目的。测试精度达１０~（－６）．     

双臂机械手干涉的计算机辅助分析

本文在考虑构件形状和尺寸的条件下,提出了判断双臂机械手干涉的计算机辅助分析方法.扼要地介绍了构件的简化模型、判断干涉的准则及程序框图.介绍了甲作者建立的双臂机械手干涉分析的通用软件 IADAR 的概况及其程序设计,并给出数字实例说明其应用.应用 IADAR 软件包可以方便地对双臂机械手进行干涉分析,并可判断出干涉的构件及其所处位置。     

钢筋混凝土空心板行模挤压成型机设计计算

本文对钢筋混凝土空心板行模挤压成型机的结构作了设计，并对关键零件螺旋绞刀作了强度校核，使减速、分动器输入为一体，送料用振动下料，结构紧凑合理，减少材料消耗、功率消耗、提高生产率。为空心板成型机设计找到了可靠的理论依据。