评估共同体:走向成熟的职业教育评估新方向

随着职业教育评估实践的逐步深入,关系困境、需求困境和目标困境等三种困境已经成为影响职业教育评估进一步发展的瓶颈。以评估共同体为主要思路,核心价值主张是共同目标观、权利共生观、合作共享观、信息开放观,构建策略上着力于构建评估新模式、开发评估新平台、呈现评估新结论、形成评估新机制、营造评估新格局和打造评估新生态。

世界电力市场评估对中国的启示

电力市场化对国家和社会经济的宏观影响已引起广泛关注。欧美国家进行了大量评估,这些评估研究可以概括为:评估对象、评估内容、评估工具、评估结果及评估指标。通过对欧美国家电力市场评估现状、评估指标及竞争带来的收益进行归纳总结,结合我国发电厂竞价上网的实际情况,找出了适合中国电力市场的宏观评估方向,主要从以下四个方面进行评估:对发电厂效率的影响,对电价及用户的影响,对电网和电厂投资影响,对环境的影响。

FAST CAPACITY ESTIMATION ALGORITHMS FOR MANETS USING DIRECTIONAL ANTENNAS

In this letter,capacity estimation for Mobile Ad hoc NETworks (MANETs) using direc- tional antennas are studied.Two Matrix-based Fast Calculation Algorithms (MFCAs) are proposed to estimate the network capacity in a network scenario in which there is no channel sharing among multiple sessions and traffic is sensitive to delay with an end-to-end delay constraint.The first algo- rithm MFCA-1 is used to estimate network capacity in a situation where all links have the same delay. It estimates the maximum number of k-hop sessions in a network based on the k-hop adjacency matrix of the network.The second algorithm MFCA-2 is used to estimate network capacity in a situation where different links may have different delays.It calculates the maximum number of sessions in a network with an end-to-end delay constraint based on the adjacency matrix and the link-delay matrix of the network.Numerical and simulation results show that both MFCA-1 and MFCA-2 can calculate network capacity much faster than the well-known Brute-Force Search Algorithm (BFSA) but with the same accuracy.

搭建信息技术平台 推动教育手段革命

姊归一中的教育技术装备和信息化工作成果是最能代表作为省级＂示范高中＂水准的一张靓丽的名片。早在2006年4月,学校接受省级示范高中评估时,评估专家就在《关于对秭归一中办学水平综合督导评估考察意见》中做出了高度的评价：＂学校教学设施设备优良,现代技术设备较为先进,能保证当前教育教学的需要,并为学校可持续发展打下了物质基础,提供了科技支撑,并朝着学校规范化、优质化、现代化方向大踏步前进＂。