加拿大大不列颠哥伦比亚省高中信息与交流技术课程标准评述

课程标准的修订最直接地反映了一个国家课程改革的方向.对一个国家课程标准的解读有助于我们准确把握该国课程改革的最新动向,从中汲取有益的经验.加拿大大不列颠哥伦比亚省新颁布的高中信息与交流技术课程标准提供的开放的课程建设理念,翔实的内容和丰富的教学资源、具体的教学目标和便于操作的教学策略以及评价策略为学校教学提供了有力的支持,值得借鉴.     

论明清文人笔下的柳敬亭

作为明末清初的民间说书艺人,柳敬亭以其酣畅淋漓、出神入化的表演技艺,取得了卓越成就,在中国俗文学史上享有突出地位。他亲历时代变迁,见证重大事件,富于情义品节,通过个人命运的起落跌宕,痛感身世之戚、家国之悲。诸多文士题赠诗文,又形成了一个颇为值得关注的文学现象,从他者的视阈,将柳敬亭视为文学表现对象,视为抒写广大文士复杂意绪的符号化人物。他们或赏其艺,或抒悲慨,或从道德层面加以鄙夷,或从权力意图予以利用,折射出清初遗民、学者、仕宦等不同角色人等的政治诉求、道德观念,更加彰显出柳敬亭的丰富文学意义。     

FARMER: A novel approach to file access correlation mining and evaluation reference model

File semantic has proven effective in optimizing large scale distributed file system. As a consequence of the elaborate and rich I/O interfaces between upper layer applications and file systems, file system can provide useful and insightful information about semantic. Hence, file semantic mining has become an increasingly important practice in both engineering and research community. Unfortunately, it is a challenge to exploit file semantic knowledge because a variety of factors could affect this information exploration process. Even worse, the challenges are exacerbated due to the intricate interdependency between these factors, and make it difficult to fully exploit the potentially important correlation among various semantic knowledges. This article proposes a file access correlation miming and evaluation reference (FARMER) model, where file is treated as a multivariate vector space, and each item within the vector corresponds a separate factor of the given file. The selection of factor depends on the application, examples of factors are file path, creator and executing program. If one particular factor occurs in both files, its value is non-zero. It is clear that the extent of inter-file relationships can be measured based on the likeness of their factor values in the semantic vectors. Benefit from this model, FARMER represents files as structured vectors of identifiers, and basic vector operations can be leveraged to quantify file correlation between two file vectors. FARMER model leverages linear regression model to estimate the strength of the relationship between file correlation and a set of influencing factors so that the “bad knowledge” can be filtered out. To demonstrate the ability of new FARMER model, FARMER is incorporated into a real large-scale object-based storage system as a case study to dynamically infer file correlations. In addition FARMER-enabled optimize service for metadata prefetching algorithm and object data layout algorithm is implemented. Experimental results show that is FARMER-enabled prefetching algorithm is shown to reduce the metadata operations latency by approximately 30%–40% when compared to a state-of-the-art metadata prefetching algorithm and a commonly used replacement policy.     

Searching high gray scale FPD scanning matrix based on PSO

With the increase of gray scale and flat panel display (FPD) size, subspace bitwise scanning strategy can be replaced traditional scanning method to cut down frame frequency. However, the direct searching strategy (DSS) becomes unfeasible to obtain corresponding high gray scale scanning matrix. Thus, particle swarm optimization (PSO) is introduced to accelerate searching for high gray scale weights scanning matrix (WSM) with its parallelism and global optimization feature. Finally a WSM of 256 gray scales is found out successfully with Matlab, which both gray linearity and scanning efficiency are satisfied.     

一种基于能量谱葡萄糖浓度检测新方法的研究

葡萄糖浓度检测在治疗糖尿病过程中起着重要作用,采用近红外光谱方法测量葡萄糖浓度是国内外研究的热点．通过实验的方法,用800nm到1600nm的近红外光照射葡萄糖水溶液,对不同葡萄糖浓度对应的能量谱进行分析,发现在1111nm处的吸收峰特征比较明显,与葡萄糖浓度有着对应的关系,通过指数曲线拟合,建立葡萄糖浓度检测的数学模型．     

谈协同学习理论在高职教育中的应用

协同学习是一种有利于培养学生社会合作能力 ,发挥学生的主观能动性及参与意识 ,适合信息社会需求的教学形式。这种教学形式在高等职业教育人才培养中 ,具有独特的教学功能。将协同学习的概念及其理论用于高职教学中 ,对创新学习方法 ,具有实际意义     

怎样求函数EXP~((q))的可接受有理逼近

本文首先得到了函数R_(?)~s(q)是函数exp(q)的各类可接受有理逼近的必要条件,其次证明了exp(q)的含有s+t-p~*个自由参数的不低于p~*阶的有理逼近存在,且对于参数的每一组给定值,逼近式唯一.接着就逼近阶P≧2s-2,s≧2情形给出了exp(q)的双参数有理逼近R_s~s(q_ib_(s-1),b_s)和三参数有理逼近R_(s+1)~s(q_ib_(s-1),b_s,b_(s+1))的系数计算公式,并由此得到了求exp的含有多个自由参数的有理逼近的一般方法.     

高校毕业生职场形象塑造初探

职场形象贯穿人的整个职业生涯。在就业形势严峻的情况下，职场形象将直接影响人的成功。良好的职场形象是外在和内在的统一，包括开朗的性格、谦恭的态度、亲切的微笑、平实的言语、真诚的交流、周到的礼仪、得体的衣着、诚实守信等等。良好的职场形象有一个学习、培养、实践、形成和提高的过程，关键在于学习和实践。     

“银元兑换券”在青海流通、使用情况述略

一九四九年七月,随着《银元及银元兑换券发行方法》的颁布,银元券被运到西宁,但直到九月初西宁解放前,国民政府中央银行西宁分行一直未能“奉令发行”。西宁分行既未“奉令发行”银元券,又元“奉拨”的银元可供兑换银元券,当时的政治,经济和军事等诸方面原因导致银元券在青海地区出现了这种特殊现象。     

以学科知识为内容的研究性学习案例设计

介绍了一则以学科知识为内容、以趣味实验为依托的研究性学习案例．该案例的实施有助于提高学生的学习兴趣，拓展学生的知识视野．