Fault diagnosis and process monitoring using a statistical pattern framework based on a self-organizing map

A multivariate method for fault diagnosis and process monitoring is proposed. This technique is based on a statistical pattern(SP) framework integrated with a self-organizing map(SOM). An SP-based SOM is used as a classifier to distinguish various states on the output map, which can visually monitor abnormal states. A case study of the Tennessee Eastman(TE) process is presented to demonstrate the fault diagnosis and process monitoring performance of the proposed method. Results show that the SP-based SOM method is a visual tool for real-time monitoring and fault diagnosis that can be used in complex chemical processes.Compared with other SOM-based methods, the proposed method can more efficiently monitor and diagnose faults.

Framework to Model User Request Access Patterns in the World Wide Web

In this paper, we present a novel approach to model user request patterns in the World Wide Web. Instead of focusing on the user traffic for web pages, we capture the user interaction at the object level of the web pages. Our framework model consists of three sub-models: one for user file access, one for web pages, and one for storage servers. Web pages are assumed to consist of different types and sizes of objects, which are characterized using several categories: articles, media, and mosaics. The model is implemented with a discrete event simulation and then used to investigate the performance of our system over a variety of parameters in our model. Our performance measure of choice is mean response time and by varying the composition of web pages through our categories, we find that our framework model is able to capture a wide range of conditions that serve as a basis for generating a variety of user request patterns. In addition, we are able to establish a set of parameters that can be used as base cases. One of the goals of this research is for the framework model to be general enough that the parameters can be varied such that it can serve as input for investigating other distributed applications that require the generation of user request access patterns.

A Design Method of Business Application Framework Based on Software Patterns

This paper discusses design and implementation method of Business Application Framework based on software patterns, and then presents MVC pattern of architecture and the method of dynamical update promulgation for Business Application Framework. We discuss adaptation of Abstract Factory for the kernel functionality of Business Application Framework, such as data creation, manipulation, composition, etc. It also presents class model and its class structure of Abstract Factory pattern. Finally, we briefly discuss the update, modification, and reconstruction method of Business Application Framework.

Pattern-Oriented Approach for Enterprise Architecture: TOGAF Framework

Design pattern suggests that developers must be able to reuse proven solutions emerging from the best design practices to solve common design problems while composing patterns to create reusable designs that can be mapped to different types of enterprise frameworks and architectures such as The Open Group Architecture Framework (TOGAF). Without this, business analysts, designers and developers are not properly applying design solutions or take full benefit of the power of patterns as reuse blocks, resulting in poor performance, poor scalability, and poor usability. Furthermore, these professionals may “reinvent the wheel” when attempting to implement the same design for different types of architectures of TOGAF framework. In this paper, we introduce different categories of design patterns as a vehicle for capturing and reusing good analyses, designs and implementation applied to TOGAF framework while detailing a motivating exemplar on how design patterns can be composed to create generic types of architectures of TOGAF framework. Then, we discuss why patterns are a suitable for developing and documenting various architectures including enterprise architectures as TOGAF.

Software Frameworks, Architectural and Design Patterns

Software systems can be among the most complex constructions in engineering disciplines and can span into years of development. Most software systems though implement in part what has already been built and tend to follow known or nearly known architectures. Although most software systems are not of the size of say Microsoft Windows 8, complexity of software development can be quick to increase. Thus among these methods that are the most important is the use of architectural and design patterns and software frameworks. Patterns provide known solutions to re-occurring problems that developers are facing. By using well-known patterns reusable components can be built in frameworks.Software frameworks provide developers with powerful tools to develop more flexible and less error-prone applications in a more effective way. Software frameworks often help expedite the development process by providing necessary functionality “out of the box”.?Providing frameworks for reusability and separation of concerns is key to software development today. In this study I take a look at the state of art and the impact of frameworks and patterns in software development.

新发展格局下吸引境外医疗消费回流协同治理框架构建研究

“双循环”新发展格局下吸引境外医疗消费回流是应对中国式现代化、“健康中国”战略和人口老龄化国家战略的重要举措,是当前我国推动供给侧结构性改革和医疗健康产业高质量发展的动力引擎。医疗消费具有产业和事业的双重属性,涉及政府部门、行业协会、医疗机构、旅游企业、中介机构等多方主体。因此,吸引境外医疗消费回流需要统筹政府政策顶层设计、行业市场环境优化、企业市场战略调整等方面构建协同治理框架,通过政府激励、行业聚力、企业齐心,多方协同共同推动我国医疗消费服务行业高质量发展,培育优良的医疗消费服务环境,从而吸引更多的境外医疗消费回流。

川西南部地区下二叠统栖霞阶层序地层特征及岩相古地理

【目的】西接康滇古陆的四川盆地西南部下二叠统栖霞阶近年来展示出良好的勘探潜力,然而针对该地区地层充填规律及古地理格局的观点还并不统一,严重制约了下一步盆内精细的油气勘探和井位部署。【方法】以四川盆地西南部下二叠统栖霞阶梁山组和栖霞组为研究对象,综合利用野外剖面、钻井岩心和测录井等资料,在岩石类型与沉积相分析的基础上,运用海相碳酸盐岩层序地层学原理与方法,对栖霞阶层序界面进行识别。并采用单因素分析多因素综合作图法,以三级层序为编图单位,结合优势相原则,分别绘制研究区栖霞阶SQ0+SQ1和SQ2层序岩相古地理图。【结果】在栖霞阶中识别出4个三级层序界面,从下到上分别为梁山组底界面(I型)、栖一段内部界面(II型)、栖一段\栖二段界面(II型)和栖霞组\茅口组界面(I型),并将其划分为3个三级层序,每个层序均由海侵域和高位域组成。通过层序地层格架的对比分析,认为栖霞阶下部的SQ0层序大致对应于传统划分的梁山组+栖一段下部地层,仅发育于研究区内的栖霞阶地层沉积前古地貌低地,并且具有向古地貌高地超覆的层序充填特征,中部的SQ1层序和上部的SQ2层序则遍布全区。川西南栖霞阶层序岩相古地理格局总体上表现为西接康滇古陆的海相碳酸盐岩台地,古地貌和沉积相带分异比较明显,自西向东依次为:康滇古陆及其东缘的潮坪、台内洼地、台内丘滩体,以及开阔—半局限海台地,而且沿台内坡折带发育的台内丘滩体往往具有环洼规模分布的趋势。【结论】通过剖析台内坡折带对碳酸盐岩成储的影响,指出SQ2层序(栖二段)是研究区栖霞阶最有利于台内丘滩体这一潜力储集相带发育的层位,环台洼坡折带发育的丘滩体相带附近是有利的勘探区。从层序地层学角度重新认识栖霞阶充填模式及岩相古地理特征,为川西南部下二叠统栖霞阶的下一步储层预测及勘探开发提供全新的理论支撑。

软件复用与Framework框架技术

讲述了软件复用的基本概念和关键技术因素,分析了框架技术的基本概念以及常见的框架系统,并将框架同构件、设计模式进行了比较,最后给出了基于面向对象框架的软件开发过程模型。

A Lightweight MVC Framework Based on Code Decoupling Principle

This paper analyzed the problems in the existing framework, and achieved a reasonable framework based on reflection and aspect-oriented programming combined with annotations to map the request parameters, and inversion of the control of the various components. The proposed framework reduced the volume of the application context, and achieved the purpose that dependencies between the various components are controlled by the framework. Based on the problems existing in the known framework, the lightweight MVC framework was implemented and the proposed framework was tested by JMeter test tool. The test results showed that the framework proposed in this paper can respond to requests faster, improve access throughput and enhance application performance and user experience. The framework proposed in this paper combined the functions of MVC and IOC to minimize the volume of external dependencies in the development and greatly improved the efficiency of Web applications development.

An Analysis Method of Business Application Framework

We discuss the evolution of object oriented software development process based on software pattern. For developing mature software framework and component, we advocate to elicit and incorporate software patterns for ensuing quality and reusability of software frameworks. On the analysis base of requirement specification for business application domain, we present analysis method and basic role model of software framework. We also elicit analysis pattern of framework architecture, and design basic role classes and their structure.

Local Binary Patterns and Its Variants for Finger Knuckle Print Recognition in Multi-Resolution Domain

Finger Knuckle Print biometric plays a vital role in establishing security for real-time environments. The success of human authentication depends on high speed and accuracy. This paper proposed an integrated approach of personal authentication using texture based Finger Knuckle Print (FKP) recognition in multiresolution domain. FKP images are rich in texture patterns. Recently, many texture patterns are proposed for biometric feature extraction. Hence, it is essential to review whether Local Binary Patterns or its variants perform well for FKP recognition. In this paper, Local Directional Pattern (LDP), Local Derivative Ternary Pattern (LDTP) and Local Texture Description Framework based Modified Local Directional Pattern (LTDF_MLDN) based feature extraction in multiresolution domain are experimented with Nearest Neighbor and Extreme Learning Machine (ELM) Classifier for FKP recognition. Experiments were conducted on PolYU database. The result shows that LDTP in Contourlet domain achieves a promising performance. It also proves that Soft classifier performs better than the hard classifier.

居民健康导向下的城市生态空间规划研究——以上海市为例

【目的】城市生态空间规划与设计是促进人群健康的上游干预措施,当前规划实践中对居民福祉的考虑较少,讨论如何将健康理念融入生态空间规划具有重要意义。【方法/过程】基于城市生态空间与居民身心健康的关系辨析,以提升物理环境的健康供给效能、增加居民参与及获取自然的机会、引导居民对自然的感知和互动为实施途径,从宏观基底格局构建、中观绿地供给优化、微观节点功能组织3个层次,构建居民健康导向下城市生态空间规划的概念框架,并在此基础上,以上海市为研究对象,讨论其城市生态空间的现状问题及健康导向的实践探索。【结果/结论】探讨了城市生态空间与居民身心健康之间的关系,形成正面干预居民健康的生态空间规划框架,为城市生态空间的健康效应强化提供理念借鉴和实践参考。

全国统一大市场建设:时空演进、逻辑框架与路径导向——基于构建新发展格局视角

建设全国统一大市场是构建新发展格局的基础支撑和内在要求。文章对全国统一大市场建设的时空脉络进行梳理剖析,提出统一大市场建设“机制、协同、层次”理论逻辑框架:关键环节运行机制包括生产环节由非均衡向均衡转变,分配环节由效率优先向重视公平转变,流通环节由量大向质强转变,需求环节由需求从属供给向需求牵引供给转变;要素资源价值在循环流转中被重塑,实现了畅通高效的动态平衡关系;发挥好市场、政府和区域优势作用,更好地融入全球一体化中去。为此,要处理好“优化营商环境—稳住市场主体”、“有为政府—有效市场”、“共同富裕—高质量发展”、“国内市场—国外市场”关系,构建更具韧性和竞争力的产业链供应链,实现高水平的科技自立自强,加快培育以内循环为主的完整的内需体系,全方位守住安全底线,系统协同推进全国统一大市场建设。

基于Spark的并行频繁项集挖掘算法

针对大数据环境下基于Spark的频繁模式增长(FP-Growth)算法存在创建条件频繁模式树(FP-tree)时空效率低,节点间通信开销大,以及冗余搜索等问题,提出了基于Spark的并行频繁项集挖掘算法(PAFMFI-Spark)。首先,该算法提出非负矩阵分解策略(SNMF),通过提供支持度计数查询和分解储存支持度计数的矩阵,解决了创建条件FP-tree的时空效率低的问题;其次,提出基于遗传算法的分组策略(GS-GA),均衡分配频繁1项集至各节点,解决了节点间的通信开销大的问题;最后,提出高效缩减树结构策略(ERTSS),缩减FP-tree树结构,解决了冗余搜索的问题。实验结果验证了PAFMFI-Spark算法的可行性以及相较于其他挖掘算法的性能优势,所提算法能有效适应各种数据的频繁项集挖掘。

川西北部地区寒武系—奥陶系的地层格架新认识及地质意义

为查明川西北部地区是否发育完整的寒武系—奥陶系的地层格架,以赋予该地区地震资料新提出的德阳—绵阳拗陷地质意义以及支撑厘清该地区构造—沉积演化过程,从而更加精准服务于油气的风险勘探部署工作。利用野外剖面精测以及锆石U-Pb同位素定年分析等手段对川西北部地区多个寒武系—奥陶系剖面的岩石类型、沉积序列以及年代归属等进行了研究。研究结果表明:①川西北部地区原定义的“筇竹寺组”顶部最大沉积年龄峰值约为505 Ma,磨刀垭组最大沉积年龄约为479 Ma;前者限定了筇竹寺组顶部的沉积时限晚于芙蓉世,后者限定了其沉积时限晚于中奥陶世。综合表明研究区可能发育连续的寒武系—奥陶系,并非缺失中上寒武统—中下奥陶统。②川西北地区寒武纪—奥陶纪时期发育潮坪→浅水陆棚→滨岸→三角洲→碳酸盐岩台地沉积环境,经历了细粒碎屑岩→粗碎屑岩→碳酸盐岩的沉积充填过程。③沉积环境可能受到加里东期的郁南、都匀、广西等多幕次构造运动的影响。④研究结果不仅为前人新提出的该地区发育寒武纪—奥陶纪局部拗陷提供地质证据,而且为四川盆地西北缘构造—沉积格局的进一步厘定奠定了基础。

基于事件语义角色的常识知识获取

常识知识获取是知识获取的瓶颈问题,该文提出了利用事件语义角色进行常识知识获取的方法。首先获取独立于句子(事件)的语义角色相关的常识知识(例如,施事有意志)和语义角色在句子中涉及的常识知识(例如,施事有嘴是施事喝受事的必要条件),该文将这些常识知识看作常识知识获取模板;接着使用一个神经网络模型对大规模Web文本进行语义角色的自动标注;最后利用标注结果中的文本内容替换常识知识获取模板中的语义角色来进一步获取常识知识。实验结果表明,该方法可以获取大量高精度的常识知识。此外,该文通过组合事件谓词(简称谓词)和标注结果中语义角色对应的文本内容生成一个谓词的下位谓词短语或事件,进而自动获取上下位关系常识。

基于Spark的变压器局部放电模式识别并行化实现

快速高效地识别局部放电类型不仅对电力设备的状况评估具有十分重大的意义,而且能够实现智能电网下对电力设施监测数据的快速诊断。因此,在Spark计算框架的基础上提出基于VPMCD(Variable Predictive Model Based Class Discriminate)的局部放电模式识别的并行化方法。采取对原始放电信号提取其φ-q-n图谱的PRPD(Phase Resolved Partial Discharge)特征构成相关特征向量作为实验输入,采取并行化VPMCD算法对放电类型进行分类。实验结果和分析表明,在Spark计算框架下的分布式处理的计算效率要优于传统单机环境下的计算效率,加速比随着节点数和数据量的增多而显著提升,可以满足智能电网下大数据快速处理的要求。

中国教育精准扶贫的赫章模式:理念、框架和推进策略

赫章县在教育扶贫“拔穷根”中扮演重要角色。由中国教育学会牵头,组建来自全国部分高校、研究机构和中小学的专家、校长和一线教师构成的扶贫专家团队,持续跟进赫章县开展教育帮扶工作。在诊断与规划基础上,选择“嵌入”教师队伍建设、学校自主发展、区域教育整体推进等领域,通过创建由“一个理念”“两大转变”“三大主体”“七大策略”构成的赫章教育扶贫模式及其“G-U-S”质量保障运行机制,由“扶志”到“扶智”,由“输血”到“造血”,探索了一条从理念到行动、从操作模式到运行机制、从推进策略到实践创新的一整套教育扶贫行动方略,为教育帮扶“斩断”贫困代际传递提供了经验,也为助力乡村振兴提供了参照。

“双循环”发展水平测度、时空格局与驱动因素研究

文章运用熵权法-TOPSIS组合权重模型对2011—2020年中国30个省份的“双循环”发展水平进行测度,并借助描述性统计、自然间断点分级法和灰色关联模型对其时序演变、空间格局与外部驱动因素进行系统分析。研究发现:(1)中国经济“双循环”发展水平整体较低,且在30个省份之间差异较大。(2)研究期内,各省份“双循环”发展水平逐年上升,但增长缓慢;时序上,呈现向坐标轴正向扩张的演进趋势,正随时间推移逐步提升;空间上,“双循环”发展水平演变非均衡性特征明显,呈现由东向西渐次降低的梯度分布特征。(3)“双循环”新发展格局实施效果的外部驱动因素地区差异明显,其驱动因素的作用程度(即关联度)按金融发展水平、基础设施水平、经济发展水平、人力资本水平、地区法治化水平、数字经济发展水平依次递减。

面向仪用总线的实时Sunday数据帧提取算法设计

在各类仪用总线网络通信过程中,系统往往需要在应用层上对接收的高速数据流进行实时处理。而如何对连续的数据流进行数据帧数据提取是讨论的主要问题。对此,分析了常见仪用总线的协议处理方法,并设计了一套帧提取算法,算法包含帧提取状态机、改进的Sunday帧头匹配算法以及帧内子域查找算法。然后本文采用直接发送、经由TCP网络发送两种环境对算法进行测试,实验证明本算法性能优于Netty框架下的帧长度域解码。最后,本文为了实际测试和应用算法,使用该算法对64通道,100 kS/s模拟量采集卡进行数据帧的实时提取和存储,并对采集的模拟量进行波形显示。本算法可用于仪用总线应用层的数据分隔、帧头识别、帧数据提取工作。