UP-Gradation of Power System Protection Scheme through TCP/IP Using GUI

The paper is concerned with the Power System Protection schemes and the resulting design requirement that enhances stability as well as control with the implementation of TCP/IP. It discusses the architecture that upgrades the existing scheme by controlling all the control signals traffic between generating units, transmission system, connected loads and protection devices that are sensitive to control signals using TCP/IP and results are compared using Graphics User Interface (GUI) in MATLAB/Simulink. Protection system describes latest breakers circuit using indirect tripping command from generating units that protects load side through load breakers that receives action signal from local controllers that have a direct communication linkage with main server having strong data base, directly monitors everything through TCP/IP platform using GUI.

Design and implementation of self-protection agent for network-based intrusion detection system

Static secure techniques, such as firewall, hierarchy filtering, distributed disposing,layer management, autonomy agent, secure communication, were introduced in distributed intrusion detection. The self-protection agents were designed, which have the distributed architecture,cooperate with the agents in intrusion detection in a loose-coupled manner, protect the security of intrusion detection system, and respond to the intrusion actively. A prototype self-protection agent was implemented by using the packet filter in operation system kernel. The results show that all the hosts with the part of network-based intrusion detection system and the whole intrusion detection system are invisible from the outside and network scanning, and cannot apperceive the existence of network-based intrusion detection system. The communication between every part is secure. In the low layer, the packet streams are controlled to avoid the buffer leaks exist ing in some system service process and back-door programs, so as to prevent users from misusing and vicious attack like Trojan Horse effectively.

IPSec密钥交换的分析

在对IKE进行分析的基础上，讨论了怎样在安全密钥协商过程中对发起者身份进行保护，并给出了具体实施步骤。针对IKE中在标准公钥加密认证中发起方也可能有多个公钥，而响应方并没有具体指出使用哪个公钥的问题，提出修改建议，使发起方通知对方使用自己哪个公钥进行解密。

后TRIPS协议时代的贸易协定与知识产权条款

TRIPS协议建立了全球统一的知识产权基准之后,世界知识产权组织(WIPO)接着制定了两个因特网版权条约。国际知识产权法和政策多以双边、多边、地区性的形式出现。从上个世纪90年代中期开始,国际上达成更高知识产权保护标准协议的场合也从WIPO和WTO转向了自由贸易协议(FTAs),并且与知识产权条款的关系呈现出新的特点。

Piezoelectric resonant ice protection systems–Part1/2:Prediction of power requirement for de-icing a NACA 0024 leading edge

This paper proposes a numerical method to analyze the ice protection capability and predict the power requirements of a piezoelectric resonant de-icing system.The method is based on a coupled electro-mechanical finite element analysis which enables the fast computation of the modes of resonance of interest to de-ice curved surfaces and the estimation of the input voltage and current required for a given configuration(defined by its mode,actuator location,ice deposit,etc.).Eventually,the electric power to be supplied can be also assessed.The method is applied to a NACA 0024 leading edge equipped with piezoelectric actuators.First,two extension modes are analyzed and compared with respect to their efficiency and power requirements.Then,tests are carried out in an icing tunnel to verify the effectiveness of the piezoelectric ice protection system and the predictions of the maximal required power.The system allows de-icing the leading edge in less than 2 s for a glaze ice deposit.

Piezoelectric resonant ice protection systems-Part 2/2:Evaluation of benefits at aircraft level

Piezoelectric resonant de-icing systems are attracting great interest.This paper aims to assess the implementation of these systems at the aircraft level.The article begins with the model to compute the power requirement of a piezoelectric resonant de-icing system sized from the prototype detailed in Part 1/2 of this article.Then the mass,drag,and fuel consumption of this system and the subcomponents needed for its implementation are assessed.The features of a piezoelectric resonant de-icing system are finally computed for aircraft similar to Airbus A320 aircraft and aircraft of different categories(Boeing 787,ATR 72 and TBM 900)and compared with the existing thermal and mechanical ice protection systems.A sensitivity analysis of the main key sizing parameters of the piezoelectric de-icing system is also performed to identify the main axes of improvement for this technology.The study shows the potential of such ice protection systems.In particular,for the realistic input parameters chosen in this work,the electro-mechanical solution can provide a 54% reduction in terms of mass and a 92% reduction in terms of power consumption for an A320 aircraft architecture,leading to a 74% decrease in the associated fuel consumption compared to the actual air bleed system.

An anti-icing scaling method for wind tunnel tests of aircraft thermal ice protection system

The efficiency of the aircraft Ice Protection Systems(IPSs)needs to be verified through icing wind tunnel tests.However,the scaling method for testing the IPSs has not been systematically established yet,and further research is needed.In the present study,a scaling method specifically designed for thermal IPSs was derived from the governing equation of thin water film.Five scaling parameters were adopted to address the heat and mass transfer involved in the thermal anti-icing process.For method validation,icing wind tunnel tests were conducted using a jet engine nacelle model equipped with a bleed air IPS.The non-dimensional surface temperature and runback ice closely matched for both the reference and scaled conditions.The validation confirms that the scaling method is capable of achieving the similarity of surface temperature and the runback ice coverage.The anti-icing scaling method can serve as an important supplement to the existing icing similarity theory.

Predicting impacts of climate change on the biogeographic patterns of representative species richness in Prydz Bay-Amery Ice Shelf

The research on the biological ecology of the Prydz Bay-Amery Ice Shelf in East Antarctica is inadequate under the increasing threat from climate change,especially for Antarctic fish and krill.The Dynamic Bioclimatic Envelope Model(DBEM)has been widely used in predicting the variation of species distribution and abundance in ocean and land under climate change;it can quantify the spatiotemporal changes of multi population under different climate emission scenarios by identifying the environmental preferences of species.The species richness and geographical pattern of six Antarctic representative species around Prydz Bay-Amery ice shelf were studied under RCP 8.5 and RCP 2.6 emission scenarios from 1970 to 2060 using Geophysical Fluid Dynamics Laboratory(GFDL),Institut Pierre Simon Laplace(IPSL),and Max Planck Institute(MPI)earth system models.The results showed that the species richness decreased as a whole,and the latitude gradient moved to the pole.The reason is that ocean warming,sea ice melting,and human activities accelerate the distribution changes of species biogeographical pattern,and the habitat range of krill,silverfish,and other organisms is gradually limited,which further leads to the change of species composition and the decrease of biomass.It is obvious that priority should be given to Prydz Bay-Amery ice shelf in the planning of Marine Protected Areas(MPAs)in East Antarctica.

Patterns of Ips cembrae(Herr)infestation on trap and standing trees of European larch(Larix decidua Mill.)

The large larch beetle,Ips cembrae,is a significant pest causing the death of larch.In 2020,the attack density of I.cembrae on larch trap trees and standing trees was evaluated using sample sections placed along the trunk.As a defensive measure against I.cembrae,trap trees were highly effective in both spring and summer.The attack density increased with increasing trap tree surface area/volume.Galleries were established evenly throughout the entire trunk including the thin upper portion.When the number of trap trees was low and their capacity full,a continual aggregation of adults occurred due to pheromone communication,leading to attacks on healthy standing trees in the immediate vicinity.It was found that I.cembrae attacked standing trees from the trunk base,with a continual colonization of the stem up to 70%of the tree height in a time-differentiated progression of development stages.The attack density of I.cembrae on standing trees was up to 40%lower than on the trap trees.

高校WAF+IPS+漏洞扫描安全防护体系的研究与应用

在《国家网络空间安全战略》提出、制定、发布、贯彻和推进实施的大环境下,国家网络安全的整体部署,如网络安全等级保护和关键信息基础设施综合保护政策等持续加强,同时在2017年6月1日正式实施的《中华人民共和国网络安全法》的风向指导和强力推动下,教育部门不断有效地指导、推动、敦促和监督了高校网络安全工作,使得其取得了显著进展。提高了安全意识,建立了基本机制,加强了防控能力,培养了技术团队,建立了应急响应方案,在各重点时期网络安全保障工作期间,较好完成保障任务的同时也积累了不少有益的经验和成果。

IP旅游视角下娄底旅游业高质量发展研究

为探究IP旅游视角下娄底旅游业高质量发展问题,采用案例分析法对娄底旅游区的接待情况、旅游发展数据、山水IP与人文IP资源以及具体的旅游业高质量发展案例进行深入分析。结果表明,娄底旅游区通过打造有特色的旅游IP和提升旅游体验质量有效促进了旅游业的高质量发展,以IP为核心的旅游业发展策略不仅有助于保护和传承自然与文化遗产,也为促进地方经济发展和提升地方品牌形象提供了有效途径。为此,娄底市应进一步加强旅游IP品牌建设与旅游体验质量提升,强化旅游产业链的整合与科技创新,加强旅游业与生态保护融合发展,从而促进娄底旅游业持续高质量发展。

新创企业知识产权的利益补偿机制研究

新创企业的知识创新与保护涉及多元利益主体,健全的利益补偿机制是缓解收益分配不平衡矛盾、挖掘社会创新能力、提升创新效率和成果转化效应的重要途径。通过阐述在知识产权领域适用利益补偿制度的法定正当性和必要性,分析当前在新创企业知识产品的创造、利用、保护中利益补偿制度适用面临的主要困难,包括对冲突利益取舍权衡的方式简单化、企业内部研发的利益补偿失衡、企业知识产权合作创新中的利益分配补偿规则不合理等问题。从知识产权弱保护与权利主体利益补偿并存、建立健全企业职务创新者的利益补偿机制,构建合作创新中的利益补偿激励机制,完善新创企业融资及税收创新激励制度等维度提出构建完善的利益补偿机制设想。

基于IP技术的500 kV变电站继电保护故障处理方法

文章针对网际互连协议(Internet Protocol,IP)化继电保护系统的故障处理问题,提出一种基于多源信息融合与智能分析的故障诊断方法(IPSR-FHM)。该方法综合利用IP网络通信优化、数据挖掘、安全加密等技术,快速准确定位和隔离继电保护故障。通过实验验证,IPSR-FHM在故障检出时间、隔离时间和定位准确率等方面均优于传统方法,同时具备较强的网络安全防护能力,可有效提升IP化继电保护系统的可靠性。

基于IP核的智能化电器SOC设计与实现

提出了基于IP核的智能化电器系统芯片设计方法。在综合分析智能化电器内容的基础上 ,自行设计了构成微机保护芯片的数据采集、数据处理、保护算法、数据和任务调度等一系列模块。并将其组合实现了完成线路保护的系统芯片设计。通过在FPGA上的硬件仿真和对实际构成的保护单元的实际测试 ,验证了芯片设计的正确性。在现有设计基础上通过IP复用 ,只需改变保护算法模块和重新设置数据与任务调度模块就能设计用于其他电力设备保护的芯片。该芯片和微处理器结合构成了当今比较理想的智能化电器设计硬件平台。

系统芯片设计中的可复用IP技术

可复用IP技术是系统芯片(SOC)设计业的关键技术之一,IP复用能够提高SOC的设计效率,缩短生产周期。鉴于此,论述了IP的基本概念与分类、IP模块的设计和基于IP复用技术的SOC设计过程,并讨论了IP设计与应用中的一些要点,如IP模块的接口、IP的产权保护和IP的选用等。

舰船综合电力系统继电保护策略

综合电力系统(Integrated Power System,IPS)作为未来舰船发展的重要组成部分,代表着先进的集成优化电力系统发展方向。为深入研究IPS中配电网保护策略,叙述了近年来IPS国内外发展情况,较全面的分析了IPS中配电网络的特点,结合几种常用母线继电保护措施在IPS中的应用情况,指出了保护实现的难点和关键;综述了IPS交流网络中单相接地故障的探测与诊断方法和陆地中性点不接地系统中单相接地故障的研究方法。最后,指出IPS配电网络的未来发展方向,讨论了IPS中压直流配电网的相应保护策略发展的方向。

完善知识产权保护促 进网络文化产业发展

知识产权保护与网络文化产业的发展处于一种持续不断的互动关系之中,表现为一种由阻碍或者不适应到促进或者适应的不断互动演进的历史过程。当前,我国网络文化产业知识产权保护所面临的问题包括:网络文化企业在实施企业知识产权战略方面的能力不足、网络著作权的刑法保护乏力、网络知识产权案件的司法审判质量不高、对不同过错知识产权侵权的损害赔偿责任没有区别对待。充分认识网络文化产业的特点对知识产权保护的影响,协调网络作品自由传播与共享和知识产权保护的关系,并据此采取相应的对策,就会使知识产权保护对网络文化产业的发展要求由阻碍或者不适应的情况转化为促进或者适应的情况。

当代企业家精神：特征、影响因素与对策建议——2019中国企业家成长与发展专题调查报告

根据千户企业经营者参与的问卷调查显示,当前企业家精神呈现五大重要新特点:更加重视诚信、尊重他人;更有责任意识,更愿意回馈社会;更加重视创新,更追求可持续发展模式;敬业精神更加显著,热爱事业并坚韧执着;更加善于思考、终身学习,不断提升自身素质和能力。调查发现,当前企业外部环境面临深刻的变化,企业经营面临较大困难,压力持续加大,企业家期待政府保持政策的持续性和稳定性,提振企业家信心,通过营造更好的营商环境,尤其是包括产权保护在内的法治环境和社会诚信环境,促进和弘扬企业家精神。

我国当前知识产权保护意识现状的实证调查与分析

为考察当前我国知识产权保护意识的现状以及知识产权保护意识与知识产权被害之间的关系,通过实证调查和分析,发现公众整体上对知识产权的了解处于"一般了解"和"听说过"之间,在尊重他人知识产权与涉及个人物质利益之间,更多考虑后者并希望以较少的支出获得较大的收益;在知识产权保护意识方面,73.4%的被试认为保护知识产权很重要,当涉及到自身的权利可能受到侵害时,关于重要性的认识程度就会上升;对企业被试的调查发现,企业被试认为企业对知识产权的保护程度处于较不完善的状态。

我国社会公众知识产权意识现状调查分析及对策研究

社会公众知识产权意识调研以网上问卷调查的形式，对不特定公众的创新意识、知识产权认知程度以及相关规则意识和道德意识等方面进行了有针对性的调查和分析，结构性地描述了我国社会整体的知识产权意识现状，并形成了全面系统的实证材料。通过对调查结论的分析表明，解决我国公众知识产权意识现状中存在的问题，应加强知识产权文化建设，实施疏导性、系统化的战略措施并着力于建立多元化的创新激励平台。