A Review of Contact Electrification at Diversified Interfaces and Related Applications on Triboelectric Nanogenerator

The triboelectric nanogenerator(TENG)can effectively collect energy based on contact electrification(CE)at diverse interfaces,including solid–solid,liquid–solid,liquid–liquid,gas–solid,and gas–liquid.This enables energy harvesting from sources such as water,wind,and sound.In this review,we provide an overview of the coexistence of electron and ion transfer in the CE process.We elucidate the diverse dominant mechanisms observed at different interfaces and emphasize the interconnectedness and complementary nature of interface studies.The review also offers a comprehensive summary of the factors influencing charge transfer and the advancements in interfacial modification techniques.Additionally,we highlight the wide range of applications stemming from the distinctive characteristics of charge transfer at various interfaces.Finally,this review elucidates the future opportunities and challenges that interface CE may encounter.We anticipate that this review can offer valuable insights for future research on interface CE and facilitate the continued development and industrialization of TENG.

In Situ Polymer Gel Electrolyte in Boosting Scalable Fibre Lithium Battery Applications

The poor interfacial stability not only deteriorates fibre lithium-ion batteries(FLBs)performance but also impacts their scalable applications.To efficiently address these challenges,Prof.Huisheng Peng team proposed a generalized channel structures strategy with optimized in situ polymerization technology in their recent study.The resultant FLBs can be woven into different-sized powering textiles,providing a high energy density output of 128 Wh kg^(-1) and simultaneously demonstrating good durability even under harsh conditions.Such a promising strategy expands the horizon in developing FLB with particular polymer gel electrolytes,and significantly ever-deepening understanding of the scaled wearable energy textile system toward a sustainable future.

Electro-assisted photocatalytic reduction of CO_(2) in ambient air using Ag/TNTAs at the gas-solid interface

The direct conversion of atmospheric CO_(2) into fuel via photocatalysis exhibits significant practical application value in advancing the carbon cycle.In this study,we established an electro-assisted photocatalytic system with dual compartments and interfaces,and coated Ag nanoparticles on the titanium nanotube arrays(TNTAs)by polydopamine modification.In the absence of sacrificial agent and alkali absorption liquid conditions,the stable,efficient and highly selective conversion of CO_(2) to CO at the gas-solid interface in ambient air was realized by photoelectric synergy.Specifically,with the assistance of potential,the CO formation rates reached 194.9μmol h^(−1) m^(−2) and 103.9μmol h^(−1) m^(−2) under ultraviolet and visible light irradiation,respectively;the corresponding CO_(2) conversion rates in ambient air were 30%and 16%,respectively.The excellent catalytic effect is mainly attributed to the formation of P–N heterojunction during the catalytic process and the surface plasmon resonance effect.Additionally,the introduction of solid agar electrolytes effectively inhibits the hydrogen evolution reaction and improves the electron utilization rate.This system promotes the development of photocatalytic technology for practical applications and provides new insights and support for the carbon cycle.

Energy Storage Systems Technologies, Evolution and Applications

Energy in its varied forms and applications has become the main driver of today’s modern society. However, recent changes in power demand and climatic changes (decarbonization policy) has awakened the need to rethink through the current energy generating and distribution system. This led to the exploration of other energy sources of which renewable energy (like thermal, solar and wind energy) is fast becoming an integral part of most energy system. However, this innovative and promising energy source is highly unreliable in maintaining a constant peak power that matches demand. Energy storage systems have thus been highlighted as a solution in managing such imbalances and maintaining the stability of supply. Energy storage technologies absorb and store energy, and release it on demand. This includes gravitational potential energy (pumped hydroelectric), chemical energy (batteries), kinetic energy (flywheels or compressed air), and energy in the form of electrical (capacitors) and magnetic fields. This paper provides a detailed and comprehensive overview of some of the state-of-the-art energy storage technologies, its evolution, classification, and comparison along with various area of applications. Also highlighted in this paper is a plethora of power electronic Interface technologies that plays a significant role in enabling optimum performance and utilization of energy storage systems in different areas of application.

COMPLEX VARIABLE-VARIATIONALMETHOD OF SOLUTION FOR BI-METALLAMINATES WITH INTERFACE CRACKSAND ITS APPLICATION IN GLUED JOINTS

In this paper, the eigen function expansions of displacements and stresses of bi-metal laminates with interface cracks are obtained. Furthermore, the stress intensity factors are determined by the variational method to satisfy the boundary conditions and there are only line integrals in the variational equations due to the previous satisfaction of all basic equations. The computations show that this method of solution has the advantages of rapid convergency and time-saving. The results obtained by this method for homogeneous material agree with the known ones very well.

某三级甲等公立医院API接口安全监测实践与思考

目的:建立医院API接口资产台账,实现API接口的统一集中管理,并对API接口的运行状态进行实时监控,及时发现接口安全风险并整改,提升医院信息安全防护水平。方法:以某三级甲等公立医院为例,通过人工和系统识别相结合的方式,梳理医院API接口,建立台账,利用API接口监测设备对网络流量实时监测,识别安全风险并整改、加固。结果:实现了全院API接口的集中统一管理,提升了医院信息安全防护水平,保障医疗数据在信息系统间的安全共享和流通。结论:对API接口进行安全监测,有助于发现医疗机构应用系统安全风险,提升医疗机构网络安全防护能力,保障医疗数据安全。

Usability-Driven Mobile Application Development

Recently,a specific interest is being taken in the development of mobile application(app)via Model-Based User Interface Development(MBUID)approach.MBUID allows the generation of mobile apps in the target platform(s)from conceptual models.As such it simplified the development process of mobile app.However,the interest is only focused on the functional aspects of the mobile app while neglecting the non-functional aspects,such as usability.The latter is largely considered as the main factor leading to the success or failure of any software system.This paper aims at addressing non-functional aspects of mobile apps generated using MBUID approach.As such,we propose a usability-driven approach for the development of mobile apps.The main stages of the proposed approach are defined in a generic way so that they can be integrated with any MBUID method.A case study is presented,in the paper,with the aim of illustrating the feasibility of this approach.

Online and Offline Android Based Mobile Application for Mapping Health Facilities Using Google Map API. Case Study: Tanzania and Kenya Borders

The evolution of technology in 1990s resulted in the enormous growth of smartphones and the propagation of mobile applications (App) that marked new opportunities for healthcare centers and medical education. Apps have altered health services from patient’s health monitoring to specialist’s appointments and consultations from specialized health facilities. It can be argued that a healthy society can bring forth sustainable economic development to its full potential while an unhealthy society cannot. However, a free movement of people, labour and right to residence which was built across East Africa (EA) borders enabled Tanzania and Kenya borders to have enormous interactions. Subsequently, increase the risk of highly communicable diseases such as Tuberculosis and Sexually transmitted infections in such a way that medical attention is unavoidable along the borders. Statistically, Android Operating System (OS) owns 83% of Africa’s mobile OS market. In addition, 25,794,560 internet users reported by Tanzania Communications Regulatory Authority (TCRA) together with the 22.86 million internet users provided by Kenya Digital which is equivalent to 46% and 43% of internet penetration in year 2020, disclose the need for Android mobile application for mapping health facilities both online and offline using Google map API, which will solve residents’ need to healthcare services on the presence or shortage of internet connections;using either Swahili or English language via Smartphone devices. The App incorporates Monitoring and Evaluation (M & E) tool for tracking application usage which will ease Admin’s task to generate daily and monthly reports in Excel and Comma-Separated Values (CSV) formats. The developed system received positive feedback from EA citizens and residents in the Arusha region and Namanga border crossing where 90.2% of the system evaluation conducted between Dec 2020 and Apr 2021 agreed upon App usage.

基于API分组重构与图像表示的恶意软件检测分类

针对目前恶意软件检测分类方法在特征提取、检测准确率等方面面临的挑战,提出一种基于API分组重构与图像表示的恶意软件检测分类方法。首先,对恶意软件调用的API类别统一编号,将API指令序列中相同编号的API聚合为同一API组,根据恶意软件运行时各类API的首次调用顺序对API组重排序,将各API组的条目数记录为该类API对软件样本的贡献度。经分组重构后,各API组按序组织,其顺序为软件样本调用各类API的顺序。各API组内部有序,其内部各API的排列顺序即为软件样本对单个API的调用顺序。有序化的API分组有助于API指令序列信息的图像化表达。基于重组的API指令序列提取API编号作为全局特征列表、API贡献度作为局部特征列表、API顺序索引作为时序特征列表,对特征列表进行标准化与零填充,转化为统一尺寸的特征数组。其中,API编号能清晰地标识API类别,API贡献度可以表征该API的调用频繁程度,API顺序索引可区分各API被调用的顺序。然后,分别用3类特征数组填充RGB图像的3个通道,生成3通道的API编号贡献度及顺序索引特征图像(Feature image of API code devotion and sequential index,FimgCDS)。最后,将Fimg CDS特征图像输入自主构建的轻量型恶意软件特征图像卷积神经网络(malware feature image convolutional neural network,MficNN)分类器,实现对恶意软件的检测与分类。实验结果表明,本文方法在两类数据集上的检测分类准确率分别为98.66%和98.35%,具有较高的恶意软件检测分类性能指标和检测分类速度。

医院网络环境中API接口的安全性问题与对策探讨

应用程序编程接口(API)是现代通信的关键节点,目前医院网络环境中多使用API接口进行应用与服务交互,而其安全性问题也日益凸显。安全防护水平关乎医疗数据的信息安全,文章结合OWASP公布的十大API接口安全漏洞,分析医院中API接口存在的安全隐患和漏洞风险,逐一阐述相应的解决方案,以期提高医院网络环境安全水平。

Web API后端接口管理与应用

本文介绍了ASP.NET Web API的主要特点及使用方法。在此基础上提出了自承载、跨域资源共享、Swagger文档管理、缓存、限流等增强和改进技术。接下来,又提出了针对大量API的接口管理需求及其技术实现方案。进一步地,提出这些技术的集成方案,并应用于真实工业环境中,现场运行稳定,接口查看和调用方便,为业主创造了巨大经济效益。

软件开发环境下API应用安全的实现与研究

API是数据交换的重要途径,其安全问题不容忽视。从基于API应用安全技术的身份验证、访问控制、消息加密及攻击检测等几个方面,深入探讨了在软件开发环境下API应用安全的实现方式与设计思路,以保障软件开发环境下API接口的使用安全,从而提升软件开发质量。

AS-Interface接口技术及应用

阐述了AS Interface(ActuratorSensorInterface,简称AS I)接口技术的特点及其在自动控制系统中的应用。介绍了AS I接口技术的主要特性,产品的主要构成。分析了接口基本内容和AS I模块,给出了AS I的两种典型应用方案。可以看出,AS I是一个传感器 执行器 接口的技术,用两芯电缆传递数据和电源,用于自动化控制层的最底层,用简单经济的方式将二进制的数字化执行器和传感器连接起来,既可以直接连接到控制箱中,单独或与PLC,IPC一起独立就地运行;或与上层现场总线(Profibus,Interbus,Devi ceNet,CAN,Modbus,Modbus+,CC Link,Ethernet等)相连,作为现场总线的一个分支,应用于网络系统,从而满足工业控制的各种要求。

Java的Abstract类与Interface及应用

对Java的Abstract类和Interface的作用和地位进行比较和分析,给出了两者的区别及各自的优缺点,并给出了两者在Java程序的实际编程中的具体应用。

Emerging Flexible Thermally Conductive Films:Mechanism,Fabrication,Application

Effective thermal management is quite urgent for electronics owing to their ever-growing integration degree,operation frequency and power density,and the main strategy of thermal management is to remove excess energy from electronics to outside by thermal conductive materials.Compared to the conventional thermal management materials,flexible thermally conductive films with high in-plane thermal conductivity,as emerging candidates,have aroused greater interest in the last decade,which show great potential in thermal management applications of next-generation devices.However,a comprehensive review of flexible thermally conductive films is rarely reported.Thus,we review recent advances of both intrinsic polymer films and polymer-based composite films with ultrahigh in-plane thermal conductivity,with deep understandings of heat transfer mechanism,processing methods to enhance thermal conductivity,optimization strategies to reduce interface thermal resistance and their potential applications.Lastly,challenges and opportunities for the future development of flexible thermally conductive films are also discussed.

面向云原生的API攻击诱捕技术研究

应用程序接口(API)作为连接服务和传输数据的核心通道,在蕴含巨大价值的背后也隐藏着不可忽视的安全风险,其作为互联网上最重要的信息基础设施已成为攻击者的主要攻击目标。为弥补现有API安全方案针对API广泛攻击面无法进行充分保护的短板问题,重点关注云原生API安全问题。基于主动诱捕思想,提出了一种面向云原生的API攻击诱捕框架,针对不同的云服务层次特点构造了相应的API诱饵及高交互诱捕环境。其中,在容器编排层(平台层),围绕云组件Kubernetes及Docker的脆弱点构造了3个API诱饵;在应用层,选取危害性较大且利用频率较高的API漏洞构造了15个API诱饵。同时,针对应用层API诱饵物理资源需求较高的问题,提出了一种基于当前网络流量的动态调度算法,在充分利用物理资源的同时最大化捕获效果。基于诱捕框架实现了原型系统并在真实环境中部署应用,系统最终捕获到1270个独立互联网协议(IP)地址以及4146个请求。实验结果表明,提出的API攻击诱捕技术可有效发现云原生环境下的API攻击行为。

Vanadium-based polyanionic compounds as cathode materials for sodium-ion batteries:Toward high-energy and high-power applications

Sodium ion batteries(SIBs)have been regarded as one of the alternatives to lithium ion batteries owing to their wide availability and significantly low cost of sodium sources.However,they face serious challenges of low energy&power density and short cycling lifespan owing to the heavy mass and large radius of Na^(+).Vanadium-based polyanionic compounds have advantageous characteristic of high operating voltage,high ionic conductivity and robust structural framework,which is conducive to their high energy&power density and long lifespan for SIBs.In this review,we will overview the latest V-based polyanionic compounds,along with the respective characteristic from the intrinsic crystal structure to performance presentation and improvement for SIBs.One of the most important aspect is to discover the essential problems existed in the present V-based polyanionic compounds for high-energy&power applications,and point out most suitable solutions from the crystal structure modulation,interface tailoring and electrode configuration design.Moreover,some scientific issues of V-based polyanionic compounds shall be also proposed and related future direction shall be provided.We believe that this review can serve as a motivation for further development of novel V-based polyanionic compounds and drive them toward high energy&power applications in the near future.

Corrosion Resistance ofAA6063-Type AI-Mg-Si Alloy by Silicon Carbide in Sodium Chloride Solution for Marine Application

The present work focused on corrosion inhibition of AA6063 type Al-Mg-Si alloy in sodium chloride （NaCI） solution with a silicon carbide inhibitor, using the potentiodynamic electrochemical method. The aluminium alloy surface morphology was examined, in the as-received and as-corroded in the un-inhibited state, with scanning electron microscopy equipped with energy dispersive spectroscopy （SEM-EDS）. The results obtained via linear polarization indicated a high corrosion potential for the unprotected as-received alloy. Equally, inhibition efficiency as high as 98.82% at 10.0 g/v silicon carbide addition was obtained with increased polarization resistance fRy）, while the current density reduced significantly for inhibited samples compared to the un-inhibited aluminium alloy. The adsorption mechanism of the inhibitor aluminium alloy follows the Langmuir adsorption isotherm. This shows that the corrosion rate of aluminium alloy with silicon carbide in NaCI environment decreased significantly with addition of the inhibitor.

A CONFERENCE CONTROL MODEL BETWEEN A WEB SERVER AND A TELECOM APPLICATION SERVER

The paper proposes a conference control model between a web server and a telecom application server,referred to as the Conference Directed Graph(CDG) ,and describes an asynchronous communication mechanism between them. The Corba Interface Definition Language(IDL) interfaces are defined,and a message sequence chart is illustrated. This web conference control model provides conference users with a new approach to manage and control a conference and the participants. The performance of the system prototype is analyzed and verified in the 863 project named "The Multi-media and Mobile Services Enabled Soft-switch System".