以任意高维纠缠态为量子信道的受控隐形传态

目的是利用高维量子纠缠态为量子信道，讨论未知单粒子态的受控隐形传输问题。以三维量子纠缠态为信道，提出一个二维任意单粒子态的受控隐形传输协议。提出了以任意[d]-维量子纠缠态为量子信道，[t]-维任意单粒子态的隐形传输协议[(t相似文献   

The influence of national culture on responsible innovation: A case of CO2 utilisation in Indonesia

Responsible innovation (RI) offers a promising step towards a more responsible adoption of innovations, such as new and emerging technologies. However, how RI would be practised in different cultural contexts and settings is still less studied, especially in the context of developing countries. Taking the utilisation of CO₂ in Indonesia as an empirical case, the purpose of this paper is to explore this issue through examining the influence of key characteristics of Indonesia's national culture on core dimensions of RI: anticipation, reflexivity, deliberation, responsiveness and participation. The different RI dimensions are applied in practice in a focus group discussion (FGD) and a round of interviews with different stakeholders that explored CO₂ utilisation in the country. Hofstede's classification of national cultural dimensions is used to single out key focus points for attention in these RI processes in the Indonesian context. The results from the experiment illustrate that culture matters in the application of RI dimensions in practice. In the sense that in order for RI to work well, the governance of core RI processes such as participation and deliberation has to be adjusted to social norms of what is considered legitimate, desirable and good behaviour. These norms differ across societies. The findings further suggest ways of applying RI dimensions in practice.     

Creative clusters in the regeneration of Valletta and the cultural politics of Strait Street

The paper aims to unfold the narrative of development in a creative cluster project for the regeneration of Strait Street in Valletta, Malta. This is approached by first examining the distinctive, historically contentious background of the neighbourhood and, thereafter, unpacking the development narrative of policy documents and the discursive and material constructs about the creative city approach to regeneration strategies in the city. Using a ‘system-wide’ analytical framework, this material is then scrutinized to gain an understanding of the specificities involved and, finally, discuss the crucial features of the key dimensions elucidating the potential strengths and weaknesses of the case     

综合传动装置胀圈密封轴槽间隙设计方法

研究一种基于理论计算与CFD仿真的胀圈密封环轴槽间隙尺寸设计方法。基于流体力学的基本方程,建立胀圈密封流场的数学模型;结合实际工况与使用要求,确定胀圈密封环与轴槽径向间隙、轴向间隙及配流衬套与旋转轴之间的间隙尺寸的约束范围;建立流场的计算流体力学模型,通过正交试验设计,分析影响胀圈密封性能的高灵敏度因素;以密封泄漏量最小为目标函数,选取最佳的轴槽间隙设计参数。结果表明,研究的3种间隙中,相比于胀圈密封环与轴槽的径向间隙、轴向间隙,配流衬套与旋转轴之间的间隙对密封环的泄漏量影响更为显著,当配流衬套与旋转轴之间的间隙增大,泄漏量也随之增大。     

Multiemotional product color design using gray theory and nondominated sorting genetic algorithm-III

When users select products, they consider the emotional experience resulting from the color of the product. However, the emotional demands of users for product color are multidimensional and diverse. It is very important yet difficult to accurately grasp multiemotional image requirements and effectively convert them into design elements. Therefore, multiemotional product color design (MEPCD) has become a very important and challenging research topic. In this article, a novel MEPCD system using gray theory (GT) and nondominated sorting genetic algorithm-III (NSGA-III) is proposed to effectively solve the MEPCD problem. First, the image perception spaces of users, which exist in different emotional dimensions, were collected using factor analysis and the semantic differential technique. Then, GT was used to establish a multidimensional emotional product color image evaluation model. Finally, NSGA-III was used to optimize and design a multiemotional color scheme for a product. Furthermore, according to actual conditions, an MEPCD system was established based on the proposed method. The design case study shows that the method and design system proposed in this article have a certain range of applicability and can effectively improve the practicality of MEPCD.     

机械CAD三维设计的应用研究

目前企业CAD的应用还局限于取代图板的阶段,没有充分发挥CAD软件的设计作用。介绍了三维设计手段的优势,指出了三维设计的应用是CAD发展的必然趋势及目前推广存在的问题。     

煤与瓦斯突出分形预测研究

以几个典型矿井为研究对象，应用分形几何理论和方法对地质构造进行定量描述，并分析其和煤与瓦斯突出危险程度的关系。确定了矿井断层网络分布的分形特征，初步建立了其分维持特征与突出之间的关系。研究结果表明，突出与非突出井田的断层分布均服从分形规律；井田吕断层分布的分维值与瓦斯突出之间存在着正相关关系等重要结论。为突出带预测提供了新的研究思路。     

变温条件下煤结构与吸氧量的关系

采用压汞法技术定量测定了在不同温度与压力下煤样的孔径、孔容积与煤的表面积的值；用分形理论对煤在定压变温条件下结构参数进行分形特征描述，并对用孔径与孔容两种分形维度的值表示煤的孔隙结构的合理性进行了比较.当煤温<100 ℃时，煤的容积分形维数增大，吸氧量增加，孔隙容积对煤的吸氧量起主要作用；当煤温≥100 ℃时，煤的分形维数减小，煤的吸氧量也增加，这是由于煤的吸氧量主要是氧化反应速率决定的，孔隙结构特征对煤的吸氧量影响很小.     

试件尺寸对碱-硅反应膨胀值测试结果的影响

采用砂浆棒法和混凝土棱柱体法试验研究了不同试件尺寸对高碱-硅反应活性的破碎玻璃骨料的ASR膨胀值的影响,对常规的砂浆棒法和混凝土棱柱体法适宜采用的试件尺寸进行了初步探讨,认为试件的横截面尺寸是影响ASR膨胀结果的关键,在湿气养护条件下进行测试时,应优先考虑选用横截面积较大的试件.     

岩石断裂面的各向异性分形和多重分形研究

针对表面结构的分形各向异性和奇异性特征，对岩石断裂表面的多重分形性质进行了研究。提出了一种新的分形测量方法---投影覆盖法，直接测量断裂表面的多重分形维数Ｄ∈［２，３），并引入粗糙性概率度量表面不规则性。研究表明，断裂表面的多重分形谱可提供有关断裂机制的更丰富的信息，不同载荷条件和断裂模式下形成的岩石断裂面具有明显不同的多重分形谱函数特征。