北京师范大学“中学化学教学设计与实践”课程及发展

介绍了北京师范大学的一门针对化学师范生职前教育训练的实践类课程——“中学化学教学设计与实践”,主要包括该课程的特色和发展历程.以实际班级授课为例详细介绍了常规的一对一指导教学模式,以及结合网络课程进行线上和线下同步教学的模式.另外,介绍了该门课的2种网络课型,即“爱课程网”的精品资源共享课和“京师在线”网上的MOOC课的课程框架和课程资源.     

绿色发展与环境治理有效性的评价方法研究——两阶段非径向方向距离函数法

绿色发展已经成为我国经济社会发展的核心理念。本文从全要素的角度建立考核绿色发展与环境治理有效性的评估方法。该方法主要是将经济发展与环境治理看作相互关联的两阶段经济-环境治理系统,并基于两阶段非径向方向距离函数给出了绿色发展和环境治理有效性的数理概念和测算方法。遵循可解释、可解析和可形式表达三原则,构建全要素绩效指数和全要素节能减排指数用于度量绿色发展与环境治理的有效性。研究发现:两阶段经济-环境治理系统技术有效的充要条件是绿色发展与环境治理同时有效。利用该方法对我国2011年30个地区的测评结果表明:我国的绿色发展水平处于初中级阶段,而环境治理仅处于初级阶段。因而,我国的绿色发展和环境治理任重道远。     

区域资源禀赋、成本约束与农业生产效率测度

农业是我国基础产业,是保障粮食安全和经济发展的根本。根据经济发展战略要求和区域资源禀赋,合理发展区域农业,提升农业对区域资源使用效率和区域资源产业配置效益,形成区域农业高效发展和资源最优配置,是区域经济发展战略的重要内容。在柯布道格拉斯生产函数的基础上,利用随机前沿技术效率测度、产业投入产出分析、偏离-份额分析,构建农业产业生产效率的测度模型,探索地区农业产出的技术效率、资源利用效率和使用效率,为农业生产和区域资源配置提供参考。结果表明,大部分区域农业产出与资源禀赋未形成最佳匹配,应在大力提高农业对区域内资本资源、政府服务资源和劳动力资源使用效率的同时,鼓励过剩的资源在产业间和区域间进行适度转移,从低使用效益产业转移到高使用效益产业,从低产出弹性区域转移到高产出弹性效益区域。     

新疆矿产资源开发引起的生态环境问题

矿产资源的开发极大地促进了新疆的发展，但同时不合理的开发也带来了众多的生态环境问题．使得原本脆弱的生态环境更加恶劣．因此，现在的紧迫任务就是提出了一些合理的方法来保护生态环境．     

金华市食用野生植物资源调查研究

调查了金华市食用野生植物资源，并对野生植物的食用价值进行了生化分析。     

浙江省土地资源利用的几个战略问题

本文针对浙江省人增地减，土地资源特别是耕地资源十分紧缺，土地的总需求与总供给间矛盾十分突出的现实状况，为使今后全省国民经济得到持续、稳定、协凋的发展，满足人民生活对农副产品需求量不断增长的客观要求，作者提出了缓解上述矛盾的战略性建议:(1)切实保护耕地资源，主攻中、低产田的单产提高，是近、中期内土地资源利用的战略重点，(2)严格控制非农业建设占用耕地，城乡建设用地应走以内涵挖潜为主的道路，(3)开发低丘缓坡地资源，是增加耕地，扩大园地，提高社会曾供给能力的主要方向，(4)丘陵山区应大力提倡林收结合农牧结合，不断提高资源利用率，这是发展节粮型畜牧业的潜力所在.     

Simulated Annealing for Multi-Mode Resource-Constrained Project Scheduling

In this paper the resource-constrained project scheduling problem with multiple execution modes for each activity and the makespan as the minimization criterion is considered. A simulated annealing approach to solve this problem is presented. The feasible solution representation is based on a precedence feasible list of activities and a mode assignment. A comprehensive computational experiment is described, performed on a set of standard test problems constructed by the ProGen project generator. The results are analyzed and discussed and some final remarks are included.     

Analysis of Synergetic Management in Telecommunication Enterprises

1　Introduction　Inthe 2 1stcentury ,withthedomainofmarketsexpandingandthevarietiesandtheamountofprod uctsorservicesincreasingrapidly ,thesuccessofen terprisesisoftendecidedbySynergiawithineachre sourceandeachfield .Specially ,thepasttenyearshavebeenthesignificantperiodforthetelecommu nicationenterprisesinChina.Growthhasincreasedinthefieldsofbuildinginfrastructuretodevelopingvalue addedservicesintelecommunicationenterpris es.Thiscomplexandchallengingenvironmentmakesitimportantthatmanagersseek…     

Optimal scheduling of parallel machines with constrained resources

This paper analyzes a manufacturing system consisting of parallel machines, which produce one product-type with controllable production rates subject to continuously-divisible, time-dependent resources. The objective is to produce the required amount of product-type units by a due date while minimizing inventory, backlog and production related costs over a production horizon. With the aid of the maximum principle, a number of analytical rules of the optimal scheduling is derived whereby the continuous-time scheduling is reduced to discrete sequencing and timing. As a result, a polynomial-time algorithm is developed for solving the problem.     

Tracking Demands in Optimal Control of Managerial Systems with Continuously-Divisible, Doubly Constrained Resources

The paper addresses problems of allocating continuously divisible resources among multiple production activities. The resources are allowed to be doubly constrained, so that both usage at every point of time and cumulative consumption over a planning horizon are limited as it is often the case in project and production scheduling. The objective is to track changing in time demands for the activities as closely as possible. We propose a general continuous-time model that states the problem in a form of the optimal control problem with non-linear speed-resource usage functions. With the aid of the maximum principle, properties of the solutions are derived to characterize optimal resource usage policies. On the basis of this analytical investigation, numerical scheduling methods are suggested and computationally studied. This revised version was published online in July 2006 with corrections to the Cover Date.