在位相空间中求解外力含时的受迫量子谐振子

运用广义线性量子变换理论 ,在位相空间中通过算子的代数运算求解外力含时的受迫谐振子 ,给出了演化算子、演化算子矩阵元和波函数的表示式 .     

量子阱光电子开关器件(一)

量子阱半导体结构可使诸如光调制器和开关等光电子器件做得更小、更快、效率更高。它所具有的逻辑特性使其在并行高速互连的电子集成电路的集成度上具有良好的潜力。光电子器件能采用波导,也能采用二维并行阵列制作。其集成规模可达2048个单元,可工作的光逻辑和存贮器件的阵列得以实现及运行,所有单元都可由自由空间光(free-space optics)进行外部并行访问。本文概述了量子阱器件的运行机理及其发展前景。     

光纤流量计的稳定性分析

分析了反射式光纤涡街流量计在管道内流体的流动为层流和紊流时光纤的受迫振动，分析表明在层流和条流状态下，光纤所受张力与单位光纤长度的质量比满足Ｔ／ρ＞＞（０．４ｖＤ／ｄ）￣２时，光纤的振动及反射回到光纤的光强变化只与外力变化频率有关。实验结果已证实了本文分析的正确性。     

反馈型振荡器起振条件的新研究

阐述了目前被广泛应用的对于反馈型振荡器的分析方法在描述起振条件和稳定条件时存在严重的逻辑缺陷。提出了一种普适的起振条件判据,推导出两组具体而又具有实际指导意义的起振条件判据,阐明了不存在“频率稳定条件”的理由。     

The Global Politics of Forced Labour

This article examines the politics of governing forced labour. It develops and applies an approach drawing on Marx’s conception of the historical formation of ‘free’ labour in the process of ‘primitive accumulation’ and Gramsci’s conception of the ‘relations of force’. Viewed through this lens, rather than representing discrete ontological categories, the boundary between ‘free’ and ‘forced’ labour is repositioned as largely a contested and ambivalent artefact of governance. The concept of the ‘political relations of force’ highlights the ways in which such constructions are shaped by complex intersections between a diversity of different social forces. This approach is subsequently applied in an analysis of an International Labour Organization project on dealing with ‘traditional slavery’ in Niger.     

关于量子控制系统的哲学思考

环境对量子控制系统的消相干揭示了一个事实,即量子世界里的系统将是一种全新的系统,它是某种开放的、数学的、并且是基于量子逻辑的系统。笔者认为,假如仍然还是立足经典思维,则系统的独立性将难以得到保证,传统的整体论也将变得自相矛盾。只有发展全新的"量子整体论",并在这种新的框架下去审视和建构量子系统,我们才有可能重新获得某种连贯一致的整体论。     

Unacceptable forms of work: A multidimensional model

Unacceptable forms of work (UFW) have been identified as an “area of critical importance” for the ILO as it approaches its centenary. Yet there is currently no comprehensive elaboration of the dimensions, causes or manifestations of UFW. This article reports on a research project that has proposed such a framework. The article first investigates and reconceptualizes key discourses on contemporary work to identify their contribution to an analytically rigorous conception of UFW. It then outlines a novel Multidimensional Model that has been designed for use by local policy actors in identifying and targeting UFW in countries across a range of income levels.     

‘There it will be better … ’: Southern Sudanese in Khartoum imagining a new ‘home’ away from ‘home’

At the time of the research, Khartoum was a multi-ethnic and multinational metropolis of 8 million people. A considerable part of the population consists of Southern Sudanese migrants and displaced persons that came during the 20 years plus of civil war in South Sudan to the capital. These people were categorised after the Comprehensive Peace Agreement (CPA), as displaced people regardless as to whether they come to the capital as labour migrants, students or because of the war to the capital. The notion of displacement assumes that they are people who are ‘out of place’: thereby assuming a former situation of being in place, a place that can be called ‘home’. After the CPA from 2005, this frequently only imagined home became a real place for the IDP’s to which they are supposed to go back. Yet, many migrants and displaced people are reluctant to move to Southern Sudan. Their decision about going to the South or staying in Khartoum depends not only on the opportunities and perspectives in their respective ‘home’ areas but also on the perceptions of belonging and identity. The imaginations and aspirations about the future life in South Sudan, which I analyse in this article, reflect this ambivalent positioning.     

Regularization with Maximum Entropy and Quantum Electrodynamics: The Merg(E) Estimators

It is well-known that under fairly conditions linear regression becomes a powerful statistical tool. In practice, however, some of these conditions are usually not satisfied and regression models become ill-posed, implying that the application of traditional estimation methods may lead to non-unique or highly unstable solutions. Addressing this issue, in this paper a new class of maximum entropy estimators suitable for dealing with ill-posed models, namely for the estimation of regression models with small samples sizes affected by collinearity and outliers, is introduced. The performance of the new estimators is illustrated through several simulation studies.     

“大跃进”政策执行的偏差问题探讨

20世纪50年代末60年代初中国共产党开展了＂大跃进＂运动。＂大跃进＂运动的决策是错误的。＂大跃进＂政策执行是贯彻＂大跃进＂政策过程的关键环节,执行的结果,由于多种因素的影响,出现了机械执行、野蛮执行和扩大范围执行等偏差。这些偏差使＂大跃进＂决策的消极后果错上加错,给人民群众和国家带来了严重的伤害。从＂大跃进＂政策执行的视角分析、总结＂大跃进＂政策制定及执行的经验教训,能够从中获得有益的启示。