Metal-organic-framework-derived copper-based catalyst for multicomponent C-S coupling reaction

Copper-based metal-organic frameworks(Cu-MOFs)are a promising multiphase catalyst for catalyzing C-S coupling reactions by virtue of their diverse structures and functions.However,the unpleasant odor and instability of the organosulfur,as well as the mass-transfer resistance that exists in multiphase catalysis,have often limited the catalytic application of Cu-MOFs in C-S coupling reactions.In this paper,a Cu-MOFs catalyst modified by cetyltrimethylammonium bromide(CTAB)was designed to enhance mass transfer by increasing the adsorption of organic substrates using the long alkanes of CTAB.Concurrently,elemental sulfur was used to replace organosulfur to achieve a highly efficient and atom-economical multicomponent C-S coupling reaction.

A Study on High School Mathematics Teaching Design Based on Teaching for Robust Understanding: Taking the Cosine Theorem as an Example

Teachers’teaching behavior plays a crucial role in students’development,and there are problems in the current teaching behavior of mathematics teachers such as ignoring students’cognitive needs,lack of equal opportunities for students’classroom performance as well as lack of formative evaluation of students.In order to solve the phenomenon,this paper analyzes and explains how to promote teaching based on the Teaching for Robust Understanding(TRU)evaluation framework with the goal of focusing on the development of all students,taking the teaching design of The Cosine Theorem as an example,and provides ideas and methods for first-line high school mathematics teachers.

Design of metal-organic frameworks(MOFs)-based photocatalyst for solar fuel production and photo-degradation of pollutants

Metal organic frameworks(MOFs)is a research hotspot in the solar fuel production and photo-degradation of pollutants field due to high surface area,rich metal/organic species,large pore volume,and adjustability of structures and compositions.Therefore,in this review,we first summarized the design factors of photocatalytic materials based on MOF from the perspective of"star"MOF.The modification strategies of MOFs-based photocatalysts were discussed to improve its photocatalytic activity and specific applications were summarized as well,including photocatalytic CO_(2)reduction,photocatalytic water splitting and photo-degradation of pollutants.Finally,the advantages and disadvantages of MOFs-based photocatalysts were discussed,the current challenges were highlighted,and suggestions for future research directions were proposed.

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.

Research on the Design and Implementation of Detection System of Nutz Framework Meteorological Metrical Device

In people’s daily life, the role of weatherforecast is self-evident. However, the accuracy offorecasting is based on the accuracy and reliability ofmeteorological data which depends on the sensitivityof meteorological device. Therefore, an importantduty of the detection institution of meteorologicalmetrical device is to have the effective detectionof meteorological device, so as to ensure a highsensitivity of the device. However, the meteorologicaldevice used by some meteorological bureaus is nottechnologically advanced and the device detectionmode is too old, which cannot meet the new regulationsissued by the China Meteorological Administration.So it is necessary for the meteorological bureau todevelop a set of devices that can easily meet the newmeteorological measurement requirements, which is ofgreat significance to ensure the accurate measurementof meteorological data.

The Framework Design of Intelligent Checkers

As one of the research direction in the field of artificial intelligence, the computer game has a great practical significance. Checkers become a represent of complete knowledge game that because of it has few chess pieces, and moves easily, So it can reflect the thought of the computer game better. First, the recursive algorithm of artificial intelligence can achieve the independent moves and checkmates in draughts game program. Second, the optimization of evaluation function makes the program choose beneficial move ways. Third, the game tree can improve the level of computer in-depth thinking, simplify the search scope, and save computer thinking time by pruning, which improve the level of chess program. In this paper, overall framework of intelligent checkers is built from board representation, game tree, valuation optimization. Based on the accumulation of experience, algorithm upgrade, depth analysis of existing framework,then we give a more optimized system framework and then strengthen the computer game level.

Logical Framework,Path Selection and Mechanism Design for Cultivation of New Type Professional Farmers

New type professional farmers are farmers who possess certain resources and capitals,have certain extent of spirit of entrepreneurship,and are fully capable of obtaining and allocating resources related to agricultural production and management,and engaged in agricultural production and management for obtaining average profit.Cultivation of new type professional farmers should be promoted in the process and at the background of"coordinated development of industrialization,informationization,urbanization and agricultural modernization".It should establish a proper cultivation subject system consisting of government,enterprises,rural communities and nonprofit organizations.Relying on multiple motive forces,efforts should be concentrated on cultivating those farmers with enterprising,highly innovative and learning ability,to guide traditional farmers to change into learning,enterprising and innovative ones.In addition,cultivation of new type professional farmers must rely on farmer education and training,modern agricultural development,increase in agricultural comparative advantage,innovation of rural management system and mechanism,multiple types of agricultural operation on a fairly large scale,as well as construction and regulation of new rural communities.Finally,it is recommended to provide system guarantee from long-term input mechanism of new type professional farmer education and training,incentive and restrictive mechanism of new type professional farmer cultivation,and construction of favorable environment for agricultural entrepreneurship.

Framework for a System of Systems Design Oriented to Evolution

A framework was proposed for designing a system of systems(SoS) that takes account of the system' s evolution over time.Given the design space of the SoS analysis,construct a multiepoch scenario design,SoS optimization,and robust designs.A hybrid model based on multi-agent and system dynamic models was used to analyze the evolution of an SoS and find robust designs.The framework can help decision makers generate a robust SoS structure based on the SoS' s capabilities over multiple epochs.

Using a Task-based Teaching Framework in Lesson Designing

Task-basedteachingandlearningis becoming more and more popularin China now,andthe aimof taskis to create a real purpose for language use and provide a natural context for language study· This article introduces what a task-based teaching frameworkis and the three phases of pre-task, while-task and post-task,combined withsomethoughts about howwe shouldconvertthosetasksinto actual classroomactivities while using the task-based teaching framework in designing the lessons and howthe teacher and students participate inthe lessons·

Developing an Abstraction Framework for Managing and Controlling Saudi Banks’ Cybersecurity Threats Based on the NIST Cybersecurity Framework and ISO/IEC 27001

Saudi Arabian banks are deeply concerned about how to effectively monitor and control security threats. In recent years, the country has taken several steps towards restructuring its organizational security and, consequently, protecting financial institutions and their clients. However, there are still several challenges left to be addressed. Accordingly, this article aims to address this problem by proposing an abstract framework based on the National Institute of Standards and Technology (NIST) Cybersecurity Framework and International Organization for Standardization/International Electrotechnical Commission (ISO/IEC 27001). The framework proposed in this paper considers the following factors involved in the security policy of Saudi banks: safety, Saudi information bank, operations and security of Saudi banks, Saudi banks’ supplier relationships, risk assessment, risk mitigation, monitoring and detection, incident response, Saudi banks’ business continuity, compliance, education, and awareness about all factors contributing to the framework implementation. This way, the proposed framework provides a comprehensive, unified approach to managing bank security threats. Not only does the proposed framework provide effective guidance on how to identify, assess, and mitigate security threats, but it also instructs how to develop policy and procedure documents relating to security issues.

整体性教学设计:多元模式解析与建构

“整体性教学设计”是教学设计世纪转型中出现的一种思潮,也就是在整体论框架下考察“教学设计”。其特点是以整体任务为依托,指向现实生活和职业领域中的综合能力培养的有序教学设计,达到帮助学习者运用综合能去解决实际生活或工作中遇到的问题。该文从问题设计、解决方法和设计过程等方面来解读当代国际四种整体性教学设计——综合学习设计模式、首要教学原理、认知学徒模式、基于目标场景模式的共通基础。我们希望从代表性的模式和理论中汲取基础的处方性要素,提出自己的整体性教学设计模式框架。

高职设计人才数字素养框架模型与课程改革实践

数字素养是数字时代高级技术技能人才必备能力之一。高职生数字素养将与未来生活、学习和工作密切相关。基于全球数字素养框架能力条目和设计人才培养具体要求的共通性,探索设计学科的跨学科特性与数字素养教育的结合。尝试建立高职设计人才的数字素养培育目标体系,改革数字素养融入设计人才培养各阶段的课程体系,建议数字素养培育生态体系。设计专业课程的改革实践为高等技能人才在专业背景下如何提升数字素养提供了实践方向。

城市一刻钟便民生活圈智能化信息服务设计与实践

本文设计了城市一刻钟便民生活圈智能化信息服务的方案。针对目前便民生活圈信息化建设中存在的问题,对总体框架、信息建设标准、信息采集平台、信息表达方法、信息应用模型等方面进行了深入研究和重点设计,并以上海市普陀区曹杨新村街道为例进行了论证性实践。本文提升了城市一刻钟便民生活圈智能化信息建设的数据处理能力、技术能力和管理能力,为推进全国范围内一刻钟便民生活圈建设奠定基础。

生成式AI时代大学生智能学习助手:框架、挑战与应对

生成式AI时代人工智能技术的快速发展,为大学生智能学习助手的产生和发展提供了坚实的技术支撑。研究以联通主义学习教学交互与认知参与模型为指导,针对生成式AI时代大学生智能学习助手的设计框架、现实挑战与建设进路展开。研究发现,生成式AI时代大学生智能学习助手的设计框架包括三大功能:作为知识获取的智慧平台,为学习者提供友好的学习交互体验的基础功能;作为知识交流的智能座舱,支持学习者的深度学习和研究活动的进阶功能;作为知识生产的创新引擎,促进学生全面持续性发展的高级功能。生成式AI时代大学生智能学习助手的现实挑战包括技术内容可靠性困境、互动与创生困难以及数据的伦理难题。为此,研究提出了大学生智能学习助手的建设进路:一是整合多元资源,提升智能学习助手的问答准确性;二是提升智能素养,促进师生与智能学习助手良性互动;三是完善政策标准,保障智能学习助手的顺利运行。

牵引供电数字孪生系统框架设计及典型应用

数字孪生是一种将物理实体与数字模型深度融合的新兴产业技术,受到国内外铁路行业广泛关注。基于数字孪生的概念和发展现状,提出牵引供电数字孪生系统的框架设计和关键技术需求。针对基于数字孪生的牵引变压器状态监测及性能预测、牵引开关柜温度监测、系统故障检测与处理等典型应用,探讨数字孪生技术在铁路牵引供电系统领域的应用前景。结果表明,通过数字孪生技术的应用,可实现对设备运行状态的全面监测和优化,提升牵引供电系统的性能及可靠性。

虚拟科学探究学习:内涵、价值与实施框架

虚拟科学探究学习作为一种虚拟实验环境与科学探究活动有效融合的新型学习形式,在培养学习者科学素养方面具有重要作用。但目前缺乏对虚拟科学探究学习的概念、价值和实施方式等问题的深入探索和准确认识,这阻碍了其在实践中的有效应用和价值发挥。虚拟科学探究学习的本质是以学习者的自主探究实践为中心,通过创设虚实融合的学习环境,设计探究性的学习活动,提供适应性的过程支持等,促进学习者的科学观察具象化、探究过程有序性、知识获取整合性和能力发展迁移性。设计虚拟科学探究学习活动,应坚持以探究式教学理念为引领、以交互式学习环境为支撑、以过程性学习评价为助力、以智能化学习干预为保障的设计原则,构建以数智技术为底座,融合环境、活动和过程要素,支持学习者开展虚拟环境下交互式科学探究活动的实施框架,实现科学核心素养的培养目标。未来研究应在强基固本、育人为先、精准赋能和人机协同等方面加强理论和实践探索,为我国高质量虚拟科学探究学习的有效开展提供有益参考。

我国博物馆与中小学教育结合的制度设计之理论框架构建

新千年后,我国博物馆事业大发展,并带动了馆校合作、文教结合工作的进步。自2007年起,“教育”被国际业界确定为博物馆的首要目的和功能。外加2008年始,我国施行博物馆减免费开放政策。在此背景下,中小学利用博物馆开展学习活动的机制正在逐步形成,当然整体尚处于初级发展阶段,亟需制度推动。值得一提的是,博物馆与中小学教育结合事业并不简单地等同于馆校合作,不局限于馆和校,而是覆盖了政府、学校、博物馆、家庭、社区等的系统工程。它以政府为“主导”,以博物馆、中小学为“主体”,并尤以场馆的积极“主动”为先。在此背景下构建的制度设计之理论框架,分为三大层级(顶层、中层、底层设计),且致力于用一系列事实和数据为理论和实践提供智力支持。

“高效办成一件事”的系统内涵、实施逻辑与能力体系

“高效办成一件事”是对“一件事一次办”“一网通办”“跨省通办”等综合政务类政策的集成与升级,其实质是加快实现从“事能办”到“事好办”的转变,其关键在于区县层级政务部门的有效落实。为此,本文立足基层典型的经验反思,着眼“高效办成一件事”的实践推进,从学理层面初步提出其系统内涵、实施逻辑与能力体系。系统内涵:结合物理-事理-人理系统方法论思想,认为“高效办成一件事”相应指向“事项”“办理”“体验”三个维度,且贯序统一于“事好办”。实施逻辑:包括事项维度的生命周期与颗粒度逻辑,办理维度的时间与空间逻辑,以及体验维度的服务设计逻辑。能力体系:涵盖环境认知、理念调适与组织变革,服务支撑、服务运行与服务创新,多方合作与知识提升共三个层次的八项能力,同时其与所处的服务生态共生互促。最后,归纳得到“三维度、五逻辑、八能力”的政务服务框架模型,以期对“高效办成一件事”的实践有所助益。

基于SSH轻量级框架的教学信息加密存储系统设计

由于传统的教学信息存储方式存在数据泄露、数据损坏等安全隐患,设计基于SSH轻量级框架的教学信息加密存储系统。采用J2EE轻量级开发框架SSH作为教学信息加密存储系统的架构。采用区块链技术加密处理教学信息,通过基于N+i模式的编码冗余存储机制将教学信息分块存储在区块链节点上,完成教学信息加密存储。测试结果表明,该系统在恶意攻击干扰下加密存储教学信息的成功率高达96.1%,可以保障信息的完整性与安全性。

空间站大规模复杂控制软件基于数据池的软件框架设计

针对复杂航天任务中控制软件不断增长的规模和复杂度带来的问题,对国外先进航天航空机构软件架构设计经验和最佳实践进行了调研,基于此对空间站大规模复杂航天器控制软件的通用框架设计进行研究,提出了一种基于数据池的软件框架设计方法,解决了空间站大规模复杂控制软件多舱段多机多总线资源管理和可扩展性的难题,实现了软件复杂的底层通信与上层应用处理之间的数据隔离和解耦,有效提高了软件复用率和可扩展能力。