Leveraging React Components in Business Process Management (BPM) Applications

As organizations increasingly embrace digital transformation, the integration of modern web technologies like React.js with Business Process Management (BPM) applications has become essential. React components offer flexibility, reusability, and scalability, making them ideal for enhancing user interfaces and driving user engagement within BPM environments. This article explores the benefits, challenges, and best practices of leveraging React components in BPM applications, along with real-world examples of successful implementations.

A review of nonlinear piezoelectric energy harvesting interface circuits in discrete components

Piezoelectric energy harvesting is considered as an ideal power resource for low-power consumption gadgets in vibrational environments.The energy extraction efficiency depends highly on the interface circuit,and should be highly improved to meet the power requirements.The nonlinear interface circuits in discrete components have been extensively explored and developed with the advantages of easy implementation,stable operation,high efficiency,and low cost.This paper reviews the state-of-the-art progress of nonlinear piezoelectric energy harvesting interface circuits in discrete components.First,the working principles and the advantages/disadvantages of four classical interface circuits are described.Then,the improved circuits based on the four typical circuits and other types of circuits are introduced in detail,and the advantages/disadvantages,output power,efficiency,energy consumption,and practicability of these circuits are analyzed.Finally,the future development trends of nonlinear piezoelectric energy harvesting circuits,e.g.,self-powered extraction,low-power consumption,and broadband characteristic,are predicted.

Influence of Drilling Fluid Components on Shear Strength at Cement-aquifuge Interface in Coalbed Methane Wells

The hydraulic fracturing is still an effective technology for the exploitation of coalbed methane （CBM）. However, after the hydraulic fracturing operation, the high water cut or sudden water flooding of CBM well usually occurs due to upward migration of bottom water, which is called water channeling （water inrush）. This problem has been severely limiting the hydraulic fracturing effect of CBM wells. Some studies show that the aquifuge and cement paste themselves will not crush under hydraulic fracturing pressure. Water channeling often occurs at cement- aquifuge interface （CAI）.

A Study of Electromyogram Based on Human-Computer Interface

In this paper, a new control system based on forearm electromyogram （EMG） is proposed for computer peripheral control and artificial prosthesis control. This control system intends to realize the commands of six pre-defined hand poses： up, down, left, right, yes, and no. In order to research the possibility of using a unified amplifier for both electroencephalogram （EEG） and EMG, the surface forearm EMG data is acquired by a 4-channel EEG measurement system. The Bayesian classifier is used to classify the power spectral density （PSD） of the signal. The experiment result verifies that this control system can supply a high command recognition rate （average 48%） even the EMG data is collected with an EEG system just with single electrode measurement.

A Component Selection Framework of Cohesion and Coupling Metrics

Component-based software engineering is concerned with the develop-ment of software that can satisfy the customer prerequisites through reuse or inde-pendent development.Coupling and cohesion measurements are primarily used to analyse the better software design quality,increase the reliability and reduced system software complexity.The complexity measurement of cohesion and coupling component to analyze the relationship between the component module.In this paper,proposed the component selection framework of Hexa-oval optimization algorithm for selecting the suitable components from the repository.It measures the interface density modules of coupling and cohesion in a modular software sys-tem.This cohesion measurement has been taken into two parameters for analyz-ing the result of complexity,with the help of low cohesion and high cohesion.In coupling measures between the component of inside parameters and outside parameters.Thefinal process of coupling and cohesion,the measured values were used for the average calculation of components parameter.This paper measures the complexity of direct and indirect interaction among the component as well as the proposed algorithm selecting the optimal component for the repository.The better result is observed for high cohesion and low coupling in compo-nent-based software engineering.

Designing interactive glazing through an engineering psychology approach:Six augmented reality scenarios that envision future car human-machine interface

Background With an increasing number of vehicles becoming autonomous,intelligent,and connected,paying attention to the future usage of car human-machine interface with these vehicles should become more relevant.Several studies have addressed car HMI but were less attentive to designing and implementing interactive glazing for every day(autonomous)driving contexts.Methods Reflecting on the literature,we describe an engineering psychology practice and the design of six novel future user scenarios,which envision the application of a specific set of augmented reality(AR)support user interactions.Additionally,we conduct evaluations on specific scenarios and experiential prototypes,which reveal that these AR scenarios aid the target user groups in experiencing a new type of interaction.The overall evaluation is positive with valuable assessment results and suggestions.Conclusions This study can interest applied psychology educators who aspire to teach how AR can be operationalized in a human-centered design process to students with minimal pre-existing expertise or minimal scientific knowledge in engineering psychology.

Information visualization,physicality and intuitive use for tangible user interfaces

In the last two decades, tangible user interfaces （TUIs） have emerged as a new interface type that interlinks the digital and physical worlds. TUIs show a potential to enhance the way in which people interact with digital information. First, this paper exam- ines the existing body of work on tangible user interfaces and discusses their application domains, especially information visualiza- tion. Then it provides a definition of intuitive use and reviews formerly separated ideas on physicality. As interaction has an impact on the overall product experience, we also discuss whether intuitive use influences the users＇ aesthetic judgements of such products.

A Study of Method on Connectivity Analysis of Between Software Components

An analysis and computation method of connectivity between components that based on logical subtyping is first presented, the concepts of virtual interface and real interface, and quantitative analysis and computation formula of connectivity between interfaces are also introduced, that based on a extendable software architecture specification language model. We provide a new idea for solving the problem of connection between reuse components.

Application of Component Technology to E-commerce System

At present E-commerce system tends to become more complex, and traditional system designing methods can not fufil the need of E-commerce system, thus requiring an effective methodas solution. With this concern, this paper introduces some concepts of component technology, then brings forward the new connotation and basic features of component technology through the analysis of its technological character. This paper finally discusses the application of component technology to E-commerce system.

Investigating Neural Representation of Finger-Movement Directions Using Electroencephalography Independent Components

There are few EEG studies on finger movement directions because ocular artifacts also convey directional information, which makes it hard to separate the contribution of EEG from that of the ocular artifacts. To overcome this issue, we designed an experiment in which EEG’s temporal dynamics and spatial information are evaluated together to improve the performance of brain-computer interface (BCI) for classifying finger movement directions. Six volunteers participated in the study. We examined their EEG using decoding analyses. Independent components (ICs) that represented brain-source signals successfully classified the directions of the finger movements with higher rates than chance level. The weight analyses of the classifiers revealed that maximal performance of the classification was recorded at the latencies prior to the onset of finger movements. The weight analyses also revealed the relevant cortical areas including the right lingual, left posterior cingulate, left inferior temporal gyrus, and right precuneus, which indicated the involvement of the visuospatial processing. We concluded that combining spatial distribution and temporal dynamics of the scalp EEG may improve BCI performance.

Navigation in virtual and real environment using brain computer interface:a progress report

A brain-computer interface (BCI) facilitates bypassing the peripheral nervous system and directly communicating with surrounding devices. Navigation technology using BCI has developed-from exploring the prototype paradigm in the virtual environment (VE) to accurately completing the locomotion intention of the operator in the form of a powered wheelchair or mobile robot in a real environment. This paper summarizes BCI navigation applications that have been used in both real and VEs in the past 20 years. Horizontal comparisons were conducted between various paradigms applied to BCI and their unique signal-processing methods. Owing to the shift in the control mode from synchronous to asynchronous, the development trend of navigation applications in the VE was also reviewed. The contrast between high level commands and low-level commands is introduced as the main line to review the two major applications of BCI navigation in real environments: mobile robots and unmanned aerial vehicles (UAVs). Finally, applications of BCI navigation to scenarios outside the laboratory;research challenges, including human factors in navigation application interaction design;and the feasibility of hybrid BCI for BCI navigation are discussed in detail.

Object-Component Development of Application and Systems Theory and Practice

The Оbject-Componet Development (ОCD) is a variety of the compositional programmings, where a role of elements of assembling is warmed by objects, interfaces and components. For developing application systems, the theory of design of subject domain based on Frege object theory is developed, together with the presentation of their functions by methods and interfaces with formal annotations for saving them in libraries. Mathematical vehicle ОCDs are models, methods, algebra of operations of objective analysis and their configuring with the use of the component algebra of running, evolution and transformation of data types that are passed between objects through interfaces. Row of the theoretical and applied aspects ОCD was realized in the instrumental-technological complex (IТC) as CASE-instruments of web-site http://sestudy.edu-ua.net. With their help the students can study, create, model, certify and accumulate or configure the objects and components into repository of ITC, and also assemble together from them in more complex applied systems.

含逆变型分布式电源和分支负荷的配电网自适应电流差动保护

电流差动保护具有良好的选择性和灵敏性。但是,逆变型分布式电源(inverter-interfaced distributed generator,IIDG)和分支负荷接入改变了配电网的故障特性,现有配电网的电流差动保护面临拒动或误动的风险。为解决以上问题,该文在计及P/Q控制的IIDG和分支负荷的故障等值建模基础上,从故障点、IIDG和分支负荷的相对位置出发,挖掘配电网线路两端正序电流差的幅值特征以及正序电流故障分量的相位特征。在此基础上,提出一种正序电流幅值与故障分量相角阈值配合的双比例制动系数自适应差动保护方案,并且利用幅相平面分析所提保护判据的可靠性和灵敏性。最后通过PSCAD/EMTDC验证了所提保护方案的有效性,仿真结果表明该方案适应不同故障类型、位置和过渡电阻,且不受IIDG以及分支负荷接入的影响。

东北地区教育建筑天然采光设计机制和优化策略研究

本文针对东北地区教育建筑冬季严重眩光和照度不足的双重问题,从探索典型教室空间天然光分布特点入手,分析采光设计机制,通过实地观察监测和静态、动态模拟比较分析,提出了界面柔光、构件导光和腔体补光三种采光优化设计策略,并结合实际工程进行了设计应用和建成后的监测评估,形成了对教育建筑设计实践具有参考借鉴价值的方法探索和理念创新。

超声载荷下矿物组分界面裂纹扩展特征研究

为研究多组分包裹性矿物受超声振动载荷作用下其界面处裂纹萌生演化过程及宏观破坏特征,以某黑钨矿石为研究对象,对其矿物组分界面开展超声振动试验;在此基础上,引入黏聚力单元构建符合矿物真实破裂特征的模型,采用试错法根据矿物组分界面原位静态加载试验获取的宏观力学参数及破碎形式对所构建模型的细观参数进行标定;并基于此模型探究振动参数对矿物组分界面裂纹扩展特征的影响。结果表明,随着超声载荷作用时间的增加,石英矿物内部微裂纹优先扩展进而产生宏观破裂,硅质岩矿物损伤较小。试验数据与模拟试验结果具有较高的吻合性,所构建的黏聚力模型能够较好地模拟矿石在超声振动下的破坏过程。矿物组分界面破碎分为裂纹萌生—裂纹聚集—裂纹扩展—宏观破坏四个阶段;矿物在加载端面主要以剪切破坏为主,并最终以拉伸破坏产生宏观裂纹;矿物组分界面破碎速率随振动频率或振幅的增加而增大,矿物组分界面破碎能耗随振动频率或振幅的增大而增大。

PNIMMO与典型固体推进剂组分表界面作用研究

为实现聚3-硝酸酯甲基-3-甲基氧杂环丁烷(PNIMMO)在推进剂配方中的进一步应用,研究了PNIMMO与4种典型固体推进剂组分(RDX、HMX、AP及Al)之间的表界面作用。利用接触角测量仪测定了各组分与不同溶剂的接触角,进而得到了各组分的表面张力,在此基础上计算了PNIMMO与典型固体推进剂组分的界面张力和黏附功,并推测了其作用机理。结果表明:PNIMMO的表面张力较小,易于在推进剂组分表面铺展。PNIMMO与推进剂组分间的界面张力大小顺序为:γ_(SL)(PNIMMO-AP)>γ_(SL)(PNIMMO-Al)>γ_(SL)(PNIMMO-RDX)>γ_(SL)(PNIMMO-HMX)。PNIMMO与推进剂组分间的黏附功大小顺序为:W_(a)(PNIMMO-AP)>W_(a)(PNIMMO-RDX)>W_(a)(PNIMMO-HMX)>W_(a)(PNIMMO-Al)。PNIMMO与HMX粘结作用最强,与Al粘结作用最弱。与传统粘合剂HTPB相比,PNIMMO有利于改善推进剂的力学性能和流变性能。

逆变型新能源场站送出线时域方向元件

逆变型新能源暂态故障特征可能导致送出线保护近区故障时现有距离保护方向元件不正确动作。基于逆变型新能源故障期间输出的正序无功电流特征,文中提出了适用于逆变型新能源场站送出线的故障方向判据,通过比较故障时保护安装处正序无功电流计算值与参考值之间的欧氏距离区分正、反向故障。仿真结果表明,提出的方向元件在各种故障场景下都能够准确地判断保护近区故障方向。

适应于逆变型风电接入系统的改进故障序分量选相方法

针对传统故障序分量选相元件在逆变型风电接入系统中可靠性较低的问题,提出了一种改进的故障序分量选相方法。首先,分析在最新风电场低电压穿越策略下,风电侧的故障序阻抗特性及传统故障序分量选相元件的适应性。然后,利用负正序、负零序阻抗相位差等效正负序、零负序电流分支系数相位差,以补偿传统序分量选相判据的相角误差。最后,采用补偿后的故障序电流相位差作为选相判据,实现了故障相的判别。同时通过调整零负序选相分区,使其具有较好的耐过渡电阻能力。仿真实验表明,在不同故障类型、故障位置和过渡电阻下改进选相方法均能可靠地选出故障相。

传统交流线路保护在换流器并网系统中的适应性分析

提出了一种继电保护适应性评估方法,基于对换流器并网系统电气量特性的分析,对工程中常配备的纵联差动保护、保护辅助元件和距离保护在换流器并网系统中的适应性进行了评估,并分析了换流器控制策略、故障场景、系统拓扑参数等因素对保护适应性的影响,给出了保护适应边界,针对部分存在适应性问题的保护,提出了性能优化方案。最后利用PSCAD/EMTDC仿真验证了保护适应性分析的正确性和优化方案的有效性,所得结论可以为我国新型电力系统中继电保护的适应性研究以及优化配置提供理论指导。

UI组件库在B端界面设计中的应用

随着互联网的快速发展,企业对于业务效率和管理需求的不断提高,企业级系统的复杂性和规模不断增加,传统的开发方式已经无法满足快速迭代和定制化需求的要求。B端(Business-to-Business)产品的发展对各行各业的发展越来越关键。为了提高开发效率、降低维护成本、增强系统的灵活性,人们开始探索更加灵活和可复用的开发方式,于是UI组件化设计应运而生。一个好的UI组件库可以有助于改善用户体验,提高用户满意度。