MATLAB在粗差探测中的应用

测量工作中,观测数据可能会带有粗差,从而给数据处理带来困难,因此必须及时的发现并剔除观测数据中的粗差。基于粗差检验的原理,利用MATLAB强大的计算能力用于粗差探测中,通过对实例从整体和局部进行假设检验分析,结果表明是有效的,可行的。     

信任视角下数据智能与专家知识的对比实证研究

[目的/意义]从信任视角对比用户对数据智能与专家知识的感知,有助于了解用户当前对这两类典型的决策信息源的信任状态及差异,进而为数据智能的深化应用、数据智能与专家知识的有效融合提供建议.[方法/过程]基于信任的经典二维度划分,即认知信任和情感信任,设计包含两对、四个潜在变量的测量量表.采用问卷调查法,获取342份有效样本...     

液货船综合安全评估专家系统模型

针对当前石油公司在液货船安全检查和准入审查中存在的非定量、非智能评估问题,引入人工智能技术构建液货船综合安全评估(formal safety assessment, FSA)专家系统模型。该模型将FSA方法与专家系统进行组合,前者通过风险识别、风险衡准和风险量化,解决报告的非定量评估和审查的主观性问题;后者引入K最近邻算法、加权赋值算法等解决审查评估的非智能化和效率低的问题。选取官方案例进行模型检验,其结果表明提出的模型能有效地帮助石油公司实现船舶准入审查的定量化、智能化,并能显著提高审查效率,降低人工评估的主观性影响。     

跨界搜寻与大数据能力协同作用下平台企业商业模式创新研究

[目的/意义]开放式创新背景下,平台企业所处的市场竞争越来越激烈,平台同质化严重,平台企业内部所拥有的创新资源、创新能力不足,无法有效支撑企业商业模式创新。跨界搜寻与大数据能力的协同作用能够为平台企业商业模式创新提供有力支撑。[方法/过程]对跨界搜寻、大数据能力及商业模式创新相关文献进行梳理,基于平台企业商业模式构成要素,构建跨界搜寻与大数据能力协同作用模型。[结果/结论]跨界搜寻有助于创新知识流动和创新资源获取,大数据能力可以完成资源整合及深度分析,二者的协同作用可以促进市场新知识发现,有利于平台企业商业模式创新。     

科学学派的历史形态探析

本文从科学史研究的材料出发 ,考察了不同历史阶段科学学派的形态、特征 ,认为一定时期出现的科学学派与当时科学和社会的发展状况有着内在的关联 ,当代科研活动的有效组织和协调必须充分考虑到当代科学发展的特征以及当代科学合作与交流进一步增长的趋势     

On the Performance of Semi- and Nonparametric Item Response Functions in Computer Adaptive Tests

Large-scale assessments often use a computer adaptive test (CAT) for selection of items and for scoring respondents. Such tests often assume a parametric form for the relationship between item responses and the underlying construct. Although semi- and nonparametric response functions could be used, there is scant research on their performance in a CAT. In this work, we compare parametric response functions versus those estimated using kernel smoothing and a logistic function of a monotonic polynomial. Monotonic polynomial items can be used with traditional CAT item selection algorithms that use analytical derivatives. We compared these approaches in CAT simulations with a variety of item selection algorithms. Our simulations also varied the features of the calibration and item pool: sample size, the presence of missing data, and the percentage of nonstandard items. In general, the results support the use of semi- and nonparametric item response functions in a CAT.     

合作探究教学法在《细胞生物学》教学中的应用

为提高《细胞生物学》教学效果,加强生物学专业知识的深入理解和系统掌握,培养高素质、创新型人才,本课程进行了以"大班上课、小班讨论"为形式的合作探究式教学试验。结果表明,教学效果良好,学生普遍欢迎。合作探究式教学在提高学生学习兴趣、拓展知识面、激发学习潜能、培养团队合作精神等方面都发挥了重要的作用。     

2000-2001年宋代文学研究论著的定量分析

大陆地区在宋代文学研究方面,2000-2001年较之前3年,作者数及论著总量均已接近持平,且活跃作者与一般作者的分界线还有所提高;不同文体的论著量互有消长;一般说来,活跃作者的论著量与其知名度大体成正比例关系。     

Periodic table of human civilization process

Abstract

In case of that human civilization was viewed as an integrated organism, the Periodic Table of the Civilizations (PTOC in short) has been formulated and recommended based on the development level and periodicity of core elements of human civilization. It divides the frontier process of the human civilization from the birth of humankind to the end of twenty-first century into 4 periods and 16 stages, and in which four periods include that of primitive culture, agricultural civilization, industrial civilization and knowledge civilization orderly, and each period includes four stages, that is, start, developing, maturing and transition stages sequentially. There are three approaches for the arrangements of the PTOC, that is, simple, vertical and horizontal tables. The big period of earth civilization refers to that from the primitive culture to the knowledge civilization, and then big period of space civilization will begin with the astronautic civilization. The first modernization witnesses the great changes and transformation from the traditional agricultural to the modern industrial civilization, and then second modernization from the modern industrial to the higher modern knowledge civilization. The periodic table, coordinate system and roadmap of human civilization and world modernization have been formulated to describe the relationship between them.     

CET4题型设计模式研究——基于任务特征理论的大学英语测试实证探索

任务型语言测试观为大学英语测试（CET）提供了新的理论基础。在Bachman与Palmer的测试任务五特征基础上,创设了新题型设计基本模式,并依据该模式设计新题型对CET4测试进行了初步探索。信度和效度实证检验的结果表明,新题型组的均值虽因主观性试题量的增加而略低于旧题型组,但两者间并无显著性差异。而且新题型还呈现出同期效度值比旧题型高的态势：同时其信度系数也较高且具有显著的统计学意义。