Recent developments in D-optimal designs

In the paper, some issues concerned with the determining spring balance weighing designs satisfying the criterion of D-optimality under the assumption measurement errors are uncorrelated and they have the same variances are discussed. In addition, highly D-efficient spring balance weighing designs are also considered. Some conditions under which any spring balance weighing design is regular D-optimal or highly D-efficient are proved. What is more, new construction methods of regular D-optimal and highly D-efficient spring balance weighing designs are presented.     

论中国历史上的三次制度设计

自三代始,迄于近代,上下四千年。其间,制度设计之事,史不绝书。然而,择其具有原创意义、影响中国历史进程的制度设计,主要有三次,分别出现在周代、秦朝和近代。在中国文化语境中,古代制度设计权属于王和圣,虽为价值有涉,但也使“天下为家”体现出“天下为公”的理想。前两次制度设计以家天下政治为核心,先后形成了王制和帝制的模式;近代以孙中山为首的民族资产阶级的制度设计,效仿法、美模式,开启中国民主制度的先河,奠定了中国政治的基本方向。从历史背景、设计者及思想来源、系统性、创新性、本质性和对外影响来比较,三次制度设计既有相同性也存在着本质差别。三次制度设计对中国历史的进程有重要影响,可以作为中国历史上时代划分的标志。三次制度设计皆发生在中国历史转折时期,其影响之深远,意义之重大,留下了宝贵的历史经验、启示和借鉴。     

A dynamic business modelling approach to design and experiment new business venture strategies

Business Modelling has evolved as a key activity to reflect new business venture strategy by framing the way a firm will operate and how it will function in achieving its goals (e.g., profitability, growth, innovation, social impact). However, scholars and practitioners have criticized the adoption of a too static perspective in the design and use of conventional Business Model representations. Such a static perspective prevents nascent entrepreneurs experimenting with their Business Models and, as a result, identifying the most effective strategies, especially in terms of business sustainability and profitability. In this paper, we argue that combining conventional Business Model schemas with System Dynamics modelling results in a strategy design tool that may overcome several limitations related to a static view of Business Model representation. Mapping the different key elements underlying value creation processes into a system of causal interdependencies – through the use of simulation – allows strategy analysts and entrepreneurs to experiment and learn how the business reacts to strategic and organizational changes in terms of performance, innovation and value creation. As such, Dynamic Business Models provide useful insights to strategy formulation and business venturing by capturing how critical Business Model elements interact to produce enduring competitive advantages over time.     

面向服务的复杂成形装备产品架构设计与优化

复杂成形装备作为高端制造产业的基础装备,是各产业转型升级和技术进步的重要保障。同时快速发展的互联网与大数据等新兴信息技术已经成为装备制造业创新不可或缺的组成部分,极其深刻地影响着复杂成形装备产业的制造模式、发展战略以及产品的开发方式。本文研究了面向服务的复杂成形装备产品架构设计与优化方法。采用公理化设计的域结构思想,建立需求域、功能域和架构域之间的映射关系;提出了基于QFD的功能生成方法以及功能模型约简方法;利用DMM建立产品架构和服务架构之间的关联关系;利用模块化理论方法,并考虑成本因素对产品架构进行优化。     

Designing for social inclusion of immigrant women: the case of TeaTime

We present our design of a digital service supporting social inclusion among immigrant women in an ethnically and socially diverse neighbourhood of a small Finnish town. The aim is to explore experiences and perceptions as well as potential barriers and challenges for using the web-based service. The case study is framed as design research having a strong user-centred design approach. We describe the design process and present the results of a mixed-method evaluation. The results are scrutinized from the perspectives of experience design. The analysis reveals a potential to facilitate social inclusion through the fulfilment of needs related to relatedness, autonomy, competence, pleasure and stimulations as well as popularity. However, some challenges in the interface design and communication of the security and purpose of the site were identified in the study. Significant differences were also found between immigrant women and local people regarding the need for this digital service.     

CO-OFDM系统中基于线性预处理的新相位噪声抑制算法

针对相干光正交频分复用（coherent optical orthogonal frequency division multiplexing,CO-OFDM）系统中相位噪声引起的载波间干扰（inter-carrier interference,ICI）问题,提出了一种基于线性预处理的新判决反馈相位噪声抑制算法。该新算法改进了线性预处理部分,利用循环前缀与OFDM符号固有的相关性,在时域进行简单的线性组合运算,充分利用了OFDM符号中冗余信息。仿真分析表明,在激光器线宽为200 kHz且误码率（bit error rate, BER）为10－4时,与判决反馈相位噪声抑制算法和一次迭代的判决反馈相位噪声抑制算法相比,该新算法BER曲线的信噪比（signal to noise ratio,SNR）分别改善了3 dB和1 dB,有效地降低由ICI引起的错误平层。     

基于多元智能理论的信息化教学设计

加德纳提出的多元智能理论给传统教育观念带来了巨大的冲击,也赋予了信息化教学设计新的依据和新的视角.基于多元智能理论,从目标导向、内容构建、环境创设、评价设计四个方面探讨信息化教学设计的基本理念,并对多元智能理论指导下的信息化教学设计模式进行分析.     

打造城市的理想形态——以安徽合肥城市发展为例

城市是文明时代最重要的标志。城市化是不可逆转的世界潮流,要从文化的层面去设计城市。以合肥为例,从提炼城市品格和城市精神入手,认为打造城市的理想形态,城市应朝着生态化方向、人本方向和文化精致方向发展。     

应用型本科艺术设计人才培养“底线”与“顶线”的思考 ——以徐州工程学院为例

在我国积极推进高校“应用型”本科院校改革与建设的过程中,科学发展观是决定其成败的关键问题。而建立科学发展 观的前提是理清高校日常教学工作与教育内容所依据和参考的标准——“底线”与“顶线”问题。而在以徐州工程学院艺术设 计专业为代表的“应用型”学科的发展过程中,由于院校间的差异,存在着制度和内容各不相同的“底线”与“顶线”问题。为此, 在应用型本科艺术设计专业办学过程中理清两条线各自的定位与标准,对于科学推进应用型高校本科层次艺术设计专业的教 育教学改革,提升应用型艺术设计人才培养水平有着十分重要的作用。     

语言能力结构与教学大纲设计

英语学习者语言能力结构由四个层面组成,即语言知识、语言技能、交际能力和综合素质,各层面之间存在密切的关系。学习者语言能力结构建立可以通过教学大纲的选择和设计来实现。语法、技能、主题、情景、功能意念以及任务型教学大纲可供教师在不同的培训阶段选择使用。