VB中DivideByZeroException类的漏洞分析

美国微软开发的VB.NET2005可视化程序设计语言中,有一个DivideByZeroException类,它是当程序中有整数除法运算而除数为零时发生的异常,这种异常通过"Catch e As DivideByZeroException"语句来捕捉,捕捉到后根据相应的容错处理语句继续执行。但在教学实践和实际编程中发现,在整数除法运算中发生除数为零的情况时,DivideByZeroException类异常并不能发生,这反映了微软开发的VB.NET2005程序设计语言中的一个漏洞。对这个问题进行了分析,并提出了弥补该漏洞的解决方案。

基于语料库的EXCEPT搭配用法研究

以语料库为基础,对中国学习者英语语料库和英语本族语语料库中常用词except在其类联接内的搭配行为进行了对比分析。数据的统计结果表明,英语本族语者和中国学习者对于这一词项的使用呈现出显著差异:学习者使用了本族语者从不使用的类联接Prep v-ing,而本族语者使用的类连接Prep(to)v,中国学习者却从未使用;在习惯搭配except for的使用上,中国学习者出现了少用现象,而且对其义项的习得也不完整,只使用了三个义项中的前两个;混淆了except与besides的用法。

except,but,except for,but for用法辨析

本文概述了except与but,except与except for,except for与but for在具体应用时的异同点。

EXAMPLES ON EXCEPTIONAL VALUES OF MEROMORPHIC FUNCTIONS

In this paper, by means of the definition of Borel exceptional value method, another exceptional value of meromorphic function which is a T exceptional value is defined by linking the concept of T direction. And we construct a meromorphic function with zero as Borel exceptional value, but not as T exceptional value; and another meromorphic function with zero as T exceptional value, but not as Borel exceptional value.

“except”在法律英语中的用法探析——基于《中国法律法规汉英平行语料库》对except用法的分析

except是法律英语例外表达的最为常用的词汇,也是用法最为灵活的词汇。熟悉和掌握except用于表达例外情况的各种用法,将使在法律英语翻译和写作中大受裨益。

Rough Set Based K-Exception Approach to Approximate Rule Reduction

There are rules refering to infrequent instances after the procession of attribute reductionand value reduction with traditional methods.A rough set RS based k-exception approach (RSKEA) torule reduction is presented.Its main idea lies in a two-phase RS based rule reduction.An ordinarydecision table is attained through general method of RS knowledge reduction in the first phase.Then a k-exception candidate set is nominated according to the decision table.RS rule reduction is employed forthe reformed source data set,which remove all the instances included in the k-exception set.We apply theapproach to the automobile database.Results show that it can reduce the number and complexity of ruleswith adjustable conflict rate,which contributes to approximate rule reduction.

Entanglement of E8E8 Exceptional Lie Symmetry Group Dark Energy, Einstein’s Maximal Total Energy and the Hartle-Hawking No Boundary Proposal as the Explanation for Dark Energy

The present note is concerned with two connected and highly important fundamental questions of physics and cosmology, namely if E8E8 Lie symmetry group describes the universe and where cosmic dark energy comes from. Furthermore, we reason following Wheeler, Hartle and Hawking that since the boundary of a boundary is an empty set which models the quantum wave of the cosmos, then it follows that dark energy is a fundamental physical phenomenon associated with the boundary of the holographic boundary. This leads directly to a clopen universe which is its own Penrose tiling-like multiverse with energy density in full agreement with COBE, WMAP and Type 1a supernova cosmic measurements.

介词except(for)、besides、apart from及but for在实践中的应用

在英语作为母语的国家 ,人们在使用语言中重于语言在客观中的应用习惯 ,并以此来掌握一些常用词在生活中的正确使用形式和方法。而与此相悖的则是许多非英语母语国家的人们在学习英语中则重于一种语法的系统化 ,以一种不变的定式来使用这些常用词 ,造成在实践应用中的错误甚至于被误解。现以题目中一组词作为例子 。

A Quick Algorithm for Mining Exceptional Rules

Exceptional rules are often ignored because of their small support. However, they have high confidence, so they are useful sometimes. A new algorithm for mining exceptional rules is presented, which creates a large itemset from a relatively small database and scans the whole database only one time to generate all exceptional rules. This algorithm is proved to be quick and effective through its application in a mushroom database.

Fabry–Prot resonance coupling associated exceptional points in a composite grating structure

The exceptional point（EP） is a significant and attractive phenomenon in an open quantum system. The scattering properties of light are similar to those in the open quantum system, which makes it possible to achieve EP in the optic system. Here we investigate the EP in a Fabry–P′erot（F–P） resonant coupling structure. The coupling between different types of F–P resonances leads to a near zero reflection, which results in a degeneration of eigenstates and thus the appearing of EP. Furthermore, the multi-wavelength EPs and unidirectional invisibility can be achieved which may be used in integrated photonics systems.

THE ENERGY FUNCTION WITH RESPECT TO THE ZEROS OF THE EXCEPTIONAL HERMITE POLYNOMIALS

We examine the energy function with respect to the zeros of exceptional Hermite polynomials. The localization of the eigenvalues of the Hessian is given in the general case.In some special arrangements we have a more precise result on the behavior of the energy function. Finally we investigate the energy function with respect to the regular zeros of the exceptional Hermite polynomials.

The Effect of Life Skills Training on the Mental Health and Level of Resilience among Teachers of Normal Students and Teachers of Exceptional Students in Zahedan

This is an experimental study conducted on two groups of control and experimental using pretestposttest design, applying psychological intervention on the study sample. The present study aimed to determine the effectiveness of collective education life skills on mental health and resilience of teachers in Zahedan. The population of the study included all teachers at schools with normal students and teachers at schools with exceptional students in Zahedan, among which 60 teachers at normal schools and 20 teachers at exceptional schools were selected and placed in two groups of experimental and control, respectively. Initially, members of the experimental group were taught 10 basic life skills in 10 2-hour sessions. Mental health and resilience questionnaires were distributed and gathered before and after the training sessions. Results indicated the positive effect of life skills training on mental health of teachers at schools with normal students and teachers at schools with exceptional students, which meant that the more the life skills training to teachers at schools with normal students and teachers at schools with exceptional students, the lower their mental health scores would be. Results also indicated the positive effect of life skills training on resilience of teachers at schools with normal students and teachers at schools with exceptional students, which meant that the more the life skills training to teachers at schools with normal students and teachers at schools with exceptional students, the higher their resilience scores would be.

Exceptional Functions of Random Series

We study the random Taylor series whose random variable sequence in |z|＜1 belongs to a class of non equal distributions which are general enough, and proved that they have not almost surely exceptioinal fu nction.

Research on Exception of Meteorological Satellite Ground System Application Based on Resource Bottleneck

Meteorological satellite ground application system resources are limited. Abnormal satellite missions often lead to hopple of system resources. In order to analyze the problem, this paper presents an anomaly analysis method for meteorological satellite ground system based on resource bottleneck. Through the CPU, memory and I/O, several types of resources in-depth were analyzed to find the bottleneck caused by the problem, thus providing recommendations for application optimization. Experimental analysis shows that the proposed method can reasonably analyze the resource bottleneck of CPU, memory and I/O, and draw a good conclusion. To solve the meteorological satellite application system application anomaly caused by the bottleneck of the problem, the application of optimization to a certain extent plays a positive role.

论英语中的“排除”与“附加”——从except与besides说开

英语中除except与besides外,还有不少介词、介词短语、副词甚至名词、形容词、连词、分词短语以及少数动词也含有＂排除＂与＂附加＂意义。其中一部分词语在特定条件下可以由＂排除＂转义为＂附加＂,或者由＂附加＂转义为＂排除＂。

One Method of How to Reserve or Abandon and Understand the Exception Rule

As a special subject in the research on information diffusion mechanism in knowledge discovery field, the author presents a new method on deciding to reserve or abandon and understanding the Exception Rule, which is to analyze the changing trend of three parameters(the support, confidence and LS),combining with the analysis of the historical changing trend of the support of the former and latter part of the Rule, in order to receive the acceptable rule and help users to fully understand them, and use them appropriately. This research has a significant effect on the post-disposal of knowledge discovery and its realizability and practicability.

基于中学物理竞赛的拔尖创新人才选拔机制研究

我国的中学学科竞赛活动,是引导和培养具备科学家潜质的青少年群体的重要途径。40年来,中学物理竞赛促进了一大批学生科学素养的提升,促进了中学物理师资队伍建设和教育教学改进,也取得了优异的国际奥赛成绩,有利于拔尖创新人才选拔和培养。但在实践中也存在功利性强、竞赛教练资源缺乏、竞赛发展水平区域差异巨大、奥赛成绩辉煌但拔尖创新人才仍显不足等问题。为提升我国拔尖创新人才自主培养能力,促进高质量教育体系建设,应将物理竞赛对拔尖创新人才的选拔与激发学生学习兴趣相结合,保持选拔工具的科学性和有效性,重视拔尖创新人才的非认知能力培养,发挥竞赛对常规教学的促进作用,完善竞赛的体制机制建设。

人工智能背景下考试招生制度与评价改革--第七届教育考试与评价研讨会综述

第七届教育考试与评价研讨会于2023年10月27-28日在上海交通大学成功举办,主题为“评价改革与教育考试高质量发展”。本届研讨会设立1个主会场和5个平行论坛。主会场聚焦人工智能背景下考试招生制度和评价改革,内容涵盖教育考试评价中的大模型构建及典型应用、数字化对考试招生改革的影响、智慧考试与智慧教育、教育教学改革与人才选拔、高考综合改革与招生录取创新、人工智能与教育评价和认知大模型与教育考试数字化转型;平行论坛涵盖高校招生实践与创新、人工智能与智慧考试、教育测量与评价、拔尖创新人才选拔、考试科研与招考改革高质量推进5个议题。来自教育行政主管部门、高校、科研院所、考试机构、高中学校及有关科技企业的600余位代表共襄盛会,碰撞思想、凝聚共识,共同探讨教育考试与评价的高质量发展之道。

美国研究型大学的拔尖创新人才选拔

美国研究型大学在招生选拔目标上注重考查拔尖创新人才的T型知识结构、创造性思维和强烈的内在动机。在选拔手段上普遍采用综合评价机制,多数大学侧重对学生申请材料的整体评价,少数大学侧重个人独特品质的整体评价或是对学生学习环境的整体评价,但均看重多元考试成绩和学习背景,只有少数高选拔性私立大学注重对学生非学术因素的评价。在拔尖创新人才的选拔质量和公信力的制度保障上,美国大学拥有充分的自主权,但制度保障缺乏透明性,考试机构和高中则主要发挥基础性作用。其对我国研究型大学拔尖创新人才选拔的启示,一是科学考查基础学科拔尖创新人才的多样性特质,二是优化以统一考试为基础的中国特色综合评价机制,三是在人才选拔过程的公平性上继续完善管理制度保障。