基于耗散与灰关联熵的RIS演化机制研究

 本文在论证区域创新系统(RIS)是一种耗散结构的基础上，以各评价创新能力的指标为序参量，来描述RIS的有序性和演化方向。应用耗散结构理论和灰色系统理论，把灰关联度和熵结合起来，以序参量为基础，建立了基于灰关联熵的RIS演化方向判别模型，并以黑龙江省为例对该模型的研究结果进行了验证，为RIS分析提供了一种崭新的研究思路。     

实现"或逻辑"线性约束的结构型控制器设计方法综述

基于受控Petri网的离散事件监控器按实现形式可分为逻辑型控制器和结构型控制器．由于结构型控制器具有控制动作的计算速度快，被控对象和监控器的描述形式统一等优点，而受到很多研究人员的青睐．然而，由于“或逻辑”线性约束条件的非凸状态空间的本质，用结构型控制器实现该线性约束条件将比较困难．在本文中，作者首先回顾了这一问题的起源及其意义，接着详细讨论了当前用结构型控制器实现该类状态规范的主流方法及它们各自存在的优缺点，并就某些方法提出了改进措施．最后，作者对今后的研究方向进行了预测和展望．     

系统生物学研究进展

人类基因组计划把生物学由分子生物学时代推向系统生物学时代,生物学由分解转向整合,由叙述科学转变为定量预测科学。     

Ethical issues of online communication research

The paper addresses severalethical issues in online communication researchin light of digital ontology as well as theepistemological questions raised by theblurring boundary between fact and theory inthis field. The concept of ontology is used ina Heideggerian sense as related to the humancapacity of world construction on the basis ofthe givenness of our being-in-the-world.Ethical dilemmas of Internet research thusarise from the tension between bodily existenceand the proper object of research, i.e., onlineexistence. The following issues are beingconsidered: online identity, online language,online consent and confidentiality. We alsoargue that research ethics in the US followsthe utilitarian tradition, while Europeanresearchers are deontologically oriented. Aguideline of best practice in online researchethics is proposed.     

Sampling and control of switched linear systems

In this paper, we address the sampling and control issues for switched linear systems. Under synchronous switching and piecewise constant control, a continuous-time switched system is naturally related to a discrete-time sampled-data system. We prove that, with almost any sampling rate, the controllable subspace will be preserved for a switched linear system. We also investigate the possibility of achieving controllability using regular switching mechanisms. We show that, to achieve controllability for a switched linear system, it is sufficient to use cyclic and synchronous switching paths and constant control laws.     

加强我国公共卫生管理的若干建议

公共卫生是事关人民群众健康的公共事业,提供公共卫生服务、进行公共卫生管理是政府的重要职责。我国政府十分重视公共卫生事业发展,尤其是2003年"非典"疫情后,我国公共卫生服务体系建设不断完善、管理不断加强。但这次突如其来的新冠肺炎疫情发生与蔓延,仍然暴露出我国公共卫生管理的一些短板,亟待我们总结经验、深入研究,有针对性地采取措施加以解决。具体建议包括:(1)完善国家安全观;(2)强化法治建设;(3)强化政府治理能力建设;(4)健全信息公开、媒体与互联网管理制度;(5)强化专家的科学精神与职业素养;(6)健全突发公共卫生事件应急管理机制;(7)加强社会组织建设,完善社会力量参与机制;(8)提升公民应对疫情灾情素质;(9)切实把"预防为主"方针落到实处;(10)注重研究突发公共卫生事件期间的经济政策。     

适用于中尺度系统研究的位涡方程

本文通过推导绝热、无摩擦大气方程组，讨论了新方程组的特点；新方程组中，位温 显式出现在动量方程中，有利于探讨倾斜的等熵面（等位温面）对中尺度系统发生和发展的影响。进一步，利用此新方程组，推导出适用于中尺度系统研究的新的位涡方程，新位涡方程突出的特点是，与中尺度系统发生、发展密切相关的散度项显式出现在方程的右端；这为研究中尺度系统演变过程中，辐合、辐散效应对系统位涡收支的影响、进而研究中尺度系统发生、发展的热、动力学过程提供了方法。     

大疫当前谈供应链思维：从“啤酒游戏”说起

2019年底暴发的新冠肺炎疫情是一次重大的公共卫生事件,它对我国乃至世界的社会经济都将产生巨大而深远的影响。遗憾的是,这样的事件已不再是百年一遇,而是十年一遇或更短的时间,因此如何有效地应对大规模传染性疾病的暴发是人类社会面临的十分重要而迫切的问题。这次新冠肺炎疫情既是一个不幸,也是一个难得的学习机会。通过对疫情防控过程的回顾,以及对在该过程中所遇到的一些困难的梳理,发现很多问题最终都可以归结为供需矛盾的问题,而供给侧的挑战通常又都源于供应链的无序和混乱。文章结合现代供应链管理理论的一些基本原理,对疫情防控工作进行了分析并给出了建议,如建立全国联网传染病监测中心、国家防控战略物资安全库存、国家突发事件应急管理指挥中心等。另外,疫后经济重建也至关重要,因此还从供应链思维的角度,分析了新冠肺炎疫情的行业影响,以及企业复工复产过程中应该注意的事项。     

Combining entrepreneurial and scientific performance in academia: towards a compounded and reciprocal Matthew-effect?

The increase of entrepreneurial activity within academia has raised concerns that the research orientation of universities might become ‘contaminated’ by the application-oriented needs of industry. Empirical evidence on this concern is scarce and ambiguous. We examine whether entrepreneurial and scientific performance in academia can be reconciled. Our empirical findings (KU Leuven, Belgium) suggest that both activities do not hamper each other; engagement in entrepreneurial activities coincides with increased publication outputs, without affecting the nature of the publications involved. As resources increase, this interaction becomes more significant, pointing towards a Matthew-effect. We finally suggest that balancing both activities further depends on the institutional policies deployed.     

A small-gain theorem with applications to input/output systems, incremental stability, detectability, and interconnections

A general input-to-state stability (ISS)-type small-gain result is presented. It specializes to a small-gain theorem for ISS operators, and it also recovers the classical statement for ISS systems in state-space form. In addition, we highlight applications to incrementally stable systems, detectable systems, and to interconnections of stable systems.