Computational Experiments for Complex Social Systems: Integrated Design of Experiment System

Powered by advanced information industry and intelligent technology, more and more complex systems are exhibiting characteristics of the cyber-physical-social systems (CPSS). And human factors have become crucial in the operations of complex social systems. Traditional mechanical analysis and social simulations alone are powerless for analyzing complex social systems. Against this backdrop, computational experiments have emerged as a new method for quantitative analysis of complex social systems by combining social simulation (e.g., ABM), complexity science, and domain knowledge. However, in the process of applying computational experiments, the construction of experiment system not only considers a large number of artificial society models, but also involves a large amount of data and knowledge. As a result, how to integrate various data, model and knowledge to achieve a running experiment system has become a key challenge. This paper proposes an integrated design framework of computational experiment system, which is composed of four parts: generation of digital subject, generation of digital object, design of operation engine, and construction of experiment system. Finally, this paper outlines a typical case study of coal mine emergency management to verify the validity of the proposed framework.

     

不同工况下区域天然气管道水力测算分析与建议

目的  管道水力计算是天然气输配系统的重要组成部分,运用该理论可以分析管道管径与流速、压力降以及燃气密度等之间的关系,贯穿于天然气管道建设和管道运营的全生命周期。管道水力计算对管道输配的设计优化和运行调度有重要影响,文章旨在对某区域长输天然气主干管道水力进行模拟计算研究和分析,以期为该区域主干管道建设和运行优化等实践工作提供参考依据。 方法  在现有的区域管网中,利用PIPELINE STUDIO软件模型计算,模拟不同工况下该区域主干管道运行状况,聚焦“迎峰度夏”和“冬季保供”两个工况的极限条件,及时发现管线运行中存在的问题,分析存在的主要输气瓶颈。 结果  研究表明：无论是“迎峰度夏”还是“冬季保供”,该区域现状管道系统存在输气瓶颈,需要优化调整管道运行调度、管输流向和水力压力,进一步发挥区域管网最大输气能力。 结论  通过分析不同极限工况下的输气能力,提出优化运行、互联互通、技术改造方案,能够消除管输瓶颈,保证区域管网安全高效运行,满足市场用户变化的用气要求。     

新一代高性能柔性直流背靠背技术及工程应用

目的  广东电网区域由于负荷密集,网架结构复杂,电气联系紧密,长期存在大面积停电风险、交直流相互影响、短路电流超标三大问题,难以满足未来电源负荷发展和系统灵活调控的需求。 方法  为解决上述问题,在广东电网核心区域建设高性能柔性直流背靠背工程,研究并采用新一代高性能柔性直流背靠背技术。在复杂电网柔性直流互联控制,高可靠、高性能换流阀研发,绿色高效换流站设计等方面开展了深入研究,实现了柔性直流背靠背技术升级。 结果  工程成功实现了异同步潮流自动控制,大幅降低了控制保护系统链路延时,研制出了高性能、高可靠性柔性直流换流阀,并在换流站降噪、降损、节水等方面做了优化设计,建成换流站全景感知系统,实现了智慧运维。目前该工程运行良好。 结论  广东电网直流背靠背工程解决了多直流馈入受端电网长期以来面临的三大稳定问题,增强了粤港澳大湾区电力长期安全可靠供应能力。     

数控机床操作界面设计研究

操作界面是数控机床实现其功能的重要枢纽,操作界面设计的有效性与合理性是评价机床成功与否的重要因素。通过实际案例设计过程,从人性化角度出发探析影响数控机床操作界面设计的相关原则与因素。     

Genetic Biomarkers of Antipsychotic-Induced Prolongation of the QT Interval in Patients with Schizophrenia

Antipsychotics (AP) induced prolongation of the QT interval in patients with schizophrenia (Sch) is an actual interdisciplinary problem as it increases the risk of sudden death syndrome. Long QT syndrome (LQTS) as a cardiac adverse drug reaction is a multifactorial symptomatic disorder, the development of which is influenced by modifying factors (APs’ dose, duration of APs therapy, APs polytherapy, and monotherapy, etc.) and non-modifying factors (genetic predisposition, gender, age, etc.). The genetic predisposition to AP-induced LQTS may be due to several causes, including causal mutations in the genes responsible for monoheme forms of LQTS, single nucleotide variants (SNVs) of the candidate genes encoding voltage-dependent ion channels expressed both in the brain and in the heart, and SNVs of candidate genes encoding key enzymes of APs metabolism. This narrative review summarizes the results of genetic studies on AP-induced LQTS and proposes a new personalized approach to assessing the risk of its development (low, moderate, high). We recommend implementation in protocols of primary diagnosis of AP-induced LQTS and medication dispensary additional observations of the risk category of patients receiving APs, deoxyribonucleic acid profiling, regular electrocardiogram monitoring, and regular therapeutic drug monitoring of the blood APs levels.     

双微机自动准同期系统的研制

针对传统的手动自动准同期系统存在合闸时机难把握、不能自动调节等缺陷,文章提出了一种采用双微机控制的智能化准同期系统,介绍了该同期系统的实现方法、软件设计和系统特点。该同期系统采用PID和双微机综合控制的方法,实现了快速跟踪电压和频率、自动调节待并发电机组的功能,能确保系统同期时精确无误地将断路器合闸。实际应用证明了该同期系统性能良好。     

学分制下排课的数据组织与算法

高校实施学分制过程中,学生先选课再排课,排课方案搜索变得相当复杂.传统的排课算法常采用字符串比较的方式,因此排课效率较低.以二进制位为单元的算法和数据结构,用位的表示方式构建出数据表,既缩短了数据量又提高了运算速度.通过在MS-SQL上建立存储过程并编写用于实现学校排课的应用程序,能大大提高排课效率,同时也使数据的交换量仅为原来的1/8.通过在拥有两万多学生的高校进行排课实测,结果显示该算法简练、逻辑清晰、快速高效.     

铀氢锆反应堆脉冲参数分析

介绍了铀氢锆反应堆计算模型和程序,分析了反应性引入速率,反应性引入量,燃料瞬发负温度系数,燃料热容和瞬发中子寿命对脉冲参数的影响。计算结果表明,脉冲峰功率与反应性引入量的平方成正比;一次脉冲释放能量与反应性引入量成正比;燃料元件热容随燃料温度变化,脉冲峰功率和释放能量随燃料热容增大而增大。     

车削加工中工件的模态分析

车削加工中工件的振动会严重影响零件的尺寸精度及表面粗糙度。为分析工件系统的动特性,分别用有限元法和试验法（频响函数法）对系统进行模态分析。结果表明两种结果之差低于10％,因此有限元求解比较精确。     

超滤系统的经济运行与维护

对荷兰诺瑞特超滤(UF)系统在深南电(中山)电力有限公司水处理设备中的运行特点和影响因素进行较系统、详细的阐述,总结了经济运行与维护应注意的问题。