智慧电厂建设架构规划研究

5G网络与大数据等技术的发展推动着工业生产领域的智慧化进程,智慧电厂建设需要结合前沿技术进行架构构建。结合H电厂具体情况,进行智慧电厂建设规划。借助数据空间大数据技术,构建全厂数据空间,打通电厂数据孤岛,形成统一综合数据平台。通过发电设备状态智能检测与实时数据分析,实现智慧机组管理。引入巡检机器人、盘库机器人等智能监测设备,实现电厂燃料、库存管理智能化。借助智能视频监测、智慧财务、智慧后勤等系统,实现电厂办公、生活智慧化。从数据空间、智慧机组、智慧燃料、智慧园区、智慧管理多角度全方位搭建智慧电厂建设架构。     

不同类型现场总线互联控制网络系统设计

现场总线是当今自动控制领域的热点技术,是连接工业自动化生产现场设备或仪表的现场通信网络,由于其巨大的技术优势,被认为是工业控制发展的必然趋势。由于多种现场总线在工业控制网络中并存,总线协议之间的互联通信已成为工业网络控制中的焦点问题,对于这一焦点问题的研究有助于工业自动控制网络的进一步推广应用。本文介绍了工业控制网络中协议转换的原理,并设计了污水处理厂控制网络系统,进一步指出不同总线协议之间异构并网的可实施性,从而指出工业控制网络中多协议互联通信技术实际应用的意义。     

变电站现场总线适配卡设计分析

现场总线技术是20世纪80年代中期在国际上发展起来并应用于生产现场的、在微机化测量控制设备之间实现双向串行多节点数字通信的系统.     

智慧电厂环境监测与风险预警系统研究与应用

为满足水电厂环境监测与风险预警高效化、智能化需求,设计了一套监测预警系统.通过对水、船、物、人等数据的感知,保障了水域可视化以及工厂安全.利用智能视频设备与AI智能分析平台对大坝关键位置进行实时监控,报告水位和流速情况,完成漂浮物告警弹窗与船舶智能分析;基于智慧消防物联网平台与AR全景可视化系统,实现仪表智能读取与告警联动.智慧电厂实测结果与现场勘察一致,能够为水域管理及故障识别提供全面的数据支撑.     

开滦范各庄矿井下运输系统信集闭系统的应用

开滦能源化工股份范各庄矿业分公司是一个年产原煤量450万吨新型矿井，在该矿井下采用移动设备无线通信技术对电机车运行的实时参数与工况进行监测。采用射频识别技术对运输车辆信息进行自动识剐与定位，通过无线和有线构成的混合现场总线智能交通信息网络实现矿进运行机车识剐、位置跟踪、货物统计、运输统计。停车计时等功能，监视轨道的道岔状态，监测控制设备的工作状态，实现轨道线路闭锁，转辙机控制闲锁、防护拦闭锁功能，大大提高了井下轨道运输的效率、可靠性、安全性与智能化水平，符合一个现代化矿井的自动化要求。     

企业发展战略

最近,Datamnitor公司通过对欧洲各国8个主要工业的700多家自动化最终用户调查后得出,在选择现场总线时,节省成本是主要考虑因素。 在该公司发表的‘现场总线的开发和用户的看法’报告中,对目前的现场总线市场现状和今后可能的发展趋向作了评述,其要点是: ●节省费用,尤其是降低设备维护费用,是最终用户期望从现场总线中获得利益的优先考虑因素; ●欧洲市场中,起主导地位的现场总线是Profibus。由于市场形势还不明朗,最终用户的看法不一定恒定。尽管如此,在目前欧洲的现场总线市场中,Profibus在节省成本方面的信誉最好(除了     

浅谈现场总线技术及前景展望

现场总线是当前自动化领域发展的热点之一，它的出现带来了控制系统的巨大变革。本文简要阐述了现场总线的概念、体系结构和技术特点；最后分析了当前现场总线存在的问题并对其发展趋势进行了展望。     

变电站现场总线适配卡设计分析

现场总线技术是20世纪80年代中期在国际上发展起来并应用于生产现场的、在微机化测量控制设备之间实现双向串行多节点数字通信的系统。它将专用的微处理器置入传统的测量控制仪表中,使它们各自都具有数字计算和数字通信能力,     

Profinet与Profibus两种总线技术应用分析

工业网络控制技术时代,对控制系统的结构有了更高的要求,在这种要求的格局下,现场总线技术应运而生,其中profibus现场总线应用最为广泛,而随着对技术要求的不断提高,profinet实时性工业以太网技术得到了迅猛的发展,这两种不同总线技术在烟草行业都有广泛的应用,本文主要是对这两种总线技术进行应用比较分析。     

基于PLC与现场总线结合的污水处理控制系统

建立智能污水处理系统是污水处理厂高效运行的有效保障，也是污水处理研究的一个重要课题。从污水处理的工艺流程出发，利用PLC与现场总线相结合建立具有现地和中控两种控制模式的自动化污水处理系统，重点探讨了系统的硬件构成和软件编程的特点。采用PLC控制器为核心的自动污水处理系统，利用现场总线实现了与中控室PC机实时通信的功能．提高了污水处理的效率，促进了污水处理系统智能控制、动态监控等多方面的全面发展。     

On the Major Transformation of the Asia-Pacific Regional Structure北大核心CSSCISSCI

Recent years have witnessedsignificant changes in the Asia-Pacific regionalstructure featuring the shift in power balance among related countries as well as adjust-ments in their respective regional strategies. So what is the prevailing trend in thistransformation and what kind of regional order will likely emerge in the future？ To an-swer these questions, the paper tries to explore the following dimensions： the evolvingregional context, shift in power balance and power conversion, geo-political and geo-e-conomic developments and interactions between them, and evolving regional order. Asthe study shows, the broadening of regional geographical scope, the rise in the numberof actors involved, as well as changesin the relations among them, have combined tocast a pluralistic and complex flavor to the regional structure. While the power balanceamong China, the United States and Japan shifts, and power conversion is also occur-ring. China and Japan are paying increasing attention to their security roles, whereasthe United States under the Obama administration laid more stress on expanding itsgeo-economic clout. In spite of the intensifying geopolitical competition among China,the United States and Japan in recent years, a Sino-US strategic compromise-whichholds the key to regional geopolitics-isother front, some kind of geo-economicmore likely to take place in the future. On thecooperation will probably emerge. In the longerterm, it will be the geo-economic trend thatwill prevail over the geopolitical trend inthe region. Finally, the future evolution of regional order wiI1 mainly follow the eco-nomic logic, accompanied by the dilutionof its hegemonic and hierarchical nature.Hence, a pluralistic and complex regional community will emerge.     

Organization and incentives in the age of sail

The British Navy in the age of sail was the most successful bureaucracy of its time. Its organization and incentive structures differed importantly from contemporaneous private sailing ventures, but closely resembled those of today’s large corporations. To induce efficient effort, the navy used a hierarchical tournament, in which sailors competed for higher pay that came with promotions based on relative performance. Promotion probabilities, the option value of future promotions, and the higher effort required of men in higher ranks and on larger vessels, combined to yield a highly skewed pay structure.     

The German Hanse and Bergen – new perspectives on an old subject

Abstract

The Hanseatic League and her kontors (trading posts) were an integral part of the medieval trade system in Northern Europe. Hanse merchants dominated many markets in this region and managed to maintain a monopoly-like role in towns like Novgorod and Bergen for many centuries. Consequently, one focus of historical research about the Hanseatic League lay on the mechanisms that enabled the Hanse merchants to keep that strong of a position for such a long time.

This article is part of the discussion about this topic. Based on Lübeck merchants with business interest in the Norwegian town of Bergen, the so-called Bergenfahrers (Bergen travellers), it will give new insights into the Hansards' economical and social organization. The three main points are (a) the integration of the Bergen market in the Hanseatic trade network as an intermediary trading place on the vivid East–West route of Hanse trade; (b) the importance of the Bergenfahrers within the Hanse merchants' economical, social and political networks; and (c) the structure of the Bergenfahrers network patterns in the late Middle Ages.

In addition to new insights into the important role of Bergen and the Bergenfahrers within Lübeck's and the other Wendish Hanse towns' trading system, this articles provides further proof for the usefulness of the methods of Social Network Analysis in medieval economic research.     

Financial Reporting and Trade Credit: Evidence from Mandatory IFRS Adoption*

We investigate the effect of mandatory IFRS adoption on trade credit. We document that firms in countries that adopt IFRS receive more trade credit from their suppliers, consistent with improved financial reporting quality and comparability playing a role in facilitating informal financing. This increase is larger for countries with a low level of societal trust, a poor pre‐IFRS‐adoption information environment, and stronger legal enforcement. These cross‐sectional results suggest that the conditions under which higher‐quality information is made publicly available affect suppliers' decisions to provide trade credit. This increase is also larger for firms with greater exposure to foreign markets, a finding that highlights the importance of more comparable international financial reporting standards in facilitating cross‐country trade credit. We also find that IFRS adoption has a stronger positive effect on trade credit for firms with greater liquidity needs. Finally, we find that firms in countries that adopt IFRS also extend more trade credit to their customers. Overall, our results support the notion that financial reporting can have a causal effect on trade credit.     

区域工业产业竞争力指标体系的构建及其评价方法研究

文章通过建立省级区域工业产业竞争力评价指标体系,设计竞争力模型,利用SPSS统计软件,对各省工业产业竞争力进行了评价测定。     

Penetration and Post-infection Development of Meloidogyne Incognita on Tobacco as Treated by Rhizobacteria Pseudomonas Fluorescens Strain P-72-10

The bio-control potential of rhizospere bacteria Pseudomonas fluorescens against plant-parasite nematode had been demonstrated. P. fluorescens had shown the effect to enhance tobacco resistance to root-knot nematode Meloidogyne incognita. Inoculation with P. fluoreseens in tobacco could lead to significant reductions in the number of juveniles that penetrated tobacco root and further life stage development of the juveniles. The number of juveniles penetrated into tobac- co root in treatment with P. fluorescens is significantly different from CK at 2DAI, 6DAI, 8DAI and 10DAI. Significant reduction and delayed development of juveniles that penetrated into tobacco root and treated were observed in treatment at 14DAI, 21DAI, 28DAI and 35DAI. In addition, P. fluoreseens treatment leads to a significant reduction in the number of eggs per egg-mass at 35 DAI. The results show P. fluorescens induced a continuously suppression on root-knot nema- tode M. incognita throughout their entire early infection phase of root penetration, subsequent life stage development and reproduction.     

文化传播中电视暴力对青少年侵犯行为的影响

伴随当代传媒产业的蓬勃发展,暴力也成为影视艺术基本的叙事类型及消费主义文化日趋盛行的现实语境。＂电视暴力＂是作为＂媒介暴力＂的一个子概念存在的;从文化传播看电视暴力,其覆盖面大,且易于接触;电视暴力对受众特别是青少年的影响巨大而深刻。要从制作者、传播者和观众三个方面的自律出发,建立适应我国国情的影视分级制。