Know your chromosomes

We continue the series with a discussion on family trees or pedigree analysis and the mapping of genus through linkage studies.     

Know your chromosomes

The study of cellular structures including chromosomes began as early as the 17th century. The organization of chromosomes, the structure and function of genes and the role of genetic mutations in diseases continue to be an area of intense scientific investigation.     

Know your chromosomes

In this article, the last of the series, the implications of understanding our genome in its totality are examined. The concerns raised seem as important as the gains promised.     

Know your chromosomes

Mutations are vital in deciphering the regulated expression of genes in all organisms. In humans, study of mutant traits has helped in the management of genetic disorders. This article focuses on the nature of mutations that are encountered in general and the possible ways in which these mutations are produced.     

Know your chromosomes

The selective elimination of human chromosomes in mousehuman hybrid cells generates a unique system for cytogenetic analysis. The use of such somatic cell hybrids in chromosome mapping is discussed in this part of the series.     

Know your personal computer

This article describes in brief the basics of the organization of the control and processing unit, memory subsystem and peripherals of a computer.     

Know your personal computer

This article briefly describes the firmware organization of the IBM PC architecture.     

Know your personal computer

This article tells you how to maintain and operate your PC.     

Know your personal computer

This article briefly surveys the predominant operating systems that run on the IBM PC architecture.     

Know your personal computer

This article surveys the CPU chips of the IBM Personal Computer using the Intel 80X86 family as the base.     

Know your personal computer

This article describes the instruction set of the base architecture by illustrating it with an assembly language program.     

Know your personal computer

This article briefly describes the input-output port organization of the IBM PC architecture.     

Know your personal computer

This article briefly describes the memory organization of the base architecture by illustrating it with a map and explains how to expand or extend the memory.     

Know your personal computer

This article surveys personal computing with the IBM personal computer as a platform to discuss details of hardware.     

Know your personal computer

This article surveys system software organization in personal computers using the IBM personal computer software. Details of the hierarchical levels of the system software organization are explained.     

学生所知道的 教师所知道的——理论、工具和结果

评估——无论采用何种形式——不得不建立在对不同水平和质量的理论思考基础之上。其中至关重要的是测验内容领域要依据教与学的过程来构建。其次,任务是评估相关内容结构的核心工具。因此,在设计对数学的教育评估时,按照合理的标识和特征对任务进行分类就成为一个息息相关的问题,也是一个巨大的挑战。本文重点研究PISA(国际学生评估项目的缩写,是以数学素养为目标的国际比较研究,包括在国家层面德国所做的许多调整)和COACTIV(德国教师数学知识和数学教学知识的一个代表性研究)。两者都旨在实现区分性评估(differentiated assessment),都考虑了评价内容和任务分析的不同方面。区分性评估结果使得我们能够获取有用的信息,进一步推动课堂教与学的发展。这些信息主要表现为两个方面:评估学生不同类型的知识,这些知识类型直接指向课堂教学与学习中存在的各种问题;探索教师知识对学生学习进展的影响,表明哪种教学行为是有效的。     

Know Star

锦户亮最喜欢的节日是万圣节,因为那一天可以随意COSPLAY啦。去年的万圣节他当然也有趁势热闹一下。戴上从夏威夷买来的老奶奶的面具,不过衣服却是穿着机车皮衣,从某种程度上来说,塑造的还是挺恐怖的风格,这正是他所要的效果。不过最难忘的莫过于他这幅打扮在外面游荡,