Construction of a Computational Scheme for the Fuzzy HIV/AIDS Epidemic Model with a Nonlinear Saturated Incidence Rate

This work aimed to construct an epidemic model with fuzzy parameters.Since the classical epidemic model doesnot elaborate on the successful interaction of susceptible and infective people,the constructed fuzzy epidemicmodel discusses the more detailed versions of the interactions between infective and susceptible people.Thenext-generation matrix approach is employed to find the reproduction number of a deterministic model.Thesensitivity analysis and local stability analysis of the systemare also provided.For solving the fuzzy epidemic model,a numerical scheme is constructed which consists of three time levels.The numerical scheme has an advantage overthe existing forward Euler scheme for determining the conditions of getting the positive solution.The establishedscheme also has an advantage over existing non-standard finite difference methods in terms of order of accuracy.The stability of the scheme for the considered fuzzy model is also provided.From the plotted results,it can beobserved that susceptible people decay by rising interaction parameters.

Analysis on the Influence Factors of High Quality Proposals and the Countermeasures

The People＇s Political Consultative Conference is an organization of the patriotic united front of the Chinese people, and it is an important form of develop- ing socialist democracy. As an important way to perform the functions of the People＇s Political Consultative Conference, the proposal work has been valued by the leading collective of the Communist Party of China. Based on the summary of the research results of CPPCC proposals at home and abroad, the influence factors of the quality of proposals were investigated through the analysis and summary of the overall conditions of CPPCC proposals in recent 5 years, and specific countermeasures were put forward in terms of proposal drafting, filing and summarizing, so as to improve the scientific level of proposal work in China, and give full play to the function of CPPCC proposal work.

Analysis and Development Proposals of Aronia mealnocarpa Planting Industry in Heilongjiang Province

Aornial mealnocarpa Elliot is a rare tree species that combined edible,medicinal,ornamental and ecological values. This article analyzes the economic value,domestic research and development status and development trend of A. mealnocarpa. Heilongjiang Province has been hurried to introduce A. mealnocarpa,lack of understanding of the characteristics of the tree species,resulting in serious cold damage and great economic losses. For these issues,proposals are put forward to promote the development of A. mealnocarpa planting industry.

Some Technical Proposals on Rural Power Grid Construction and Retrofit

In consideration of high investment, large scope, longperiod and arduous tasks of rural power garid construction andretrofit, this paper analyzes the present state of China’s ruralpower grids and the difficulties on the construction and retrofit,for which some technical proposals are put forward.

Survey of Clean Energy Industry Based on Information Analysis Method

This study was conducted to examine the worldwide interest in the clean energy industry and to make recommendations for the development of this industry. The authors conducted a survey and research using Internet open source data in informatics methods to produce relevant results to support the depth of related work. Based on the valid findings, a discussion is carried out to give suggestions for the development of the clean energy industry in China at several levels.

Object Tracking Algorithm Based on Multi-Time-Space Perception and Instance-Specific Proposals

Aiming at the problem that a single correlation filter model is sensitive to complex scenes such as background interference and occlusion,a tracking algorithm based on multi-time-space perception and instance-specific proposals is proposed to optimize the mathematical model of the correlation filter(CF).Firstly,according to the consistency of the changes between the object frames and the filter frames,the mask matrix is introduced into the objective function of the filter,so as to extract the spatio-temporal information of the object with background awareness.Secondly,the object function of multi-feature fusion is constructed for the object location,which is optimized by the Lagrange method and solved by closed iteration.In the process of filter optimization,the constraints term of time-space perception is designed to enhance the learning ability of the CF to optimize the final track-ing results.Finally,when the tracking results fluctuate,the boundary suppres-sion factor is introduced into the instance-specific proposals to reduce the risk of model drift effectively.The accuracy and success rate of the proposed algorithm are verified by simulation analysis on two popular benchmarks,the object tracking benchmark 2015(OTB2015)and the temple color 128(TC-128).Extensive experimental results illustrate that the optimized appearance model of the proposed algorithm is effective.The distance precision rate and overlap success rate of the proposed algorithm are 0.756 and 0.656 on the OTB2015 benchmark,which are better than the results of other competing algorithms.The results of this study can solve the problem of real-time object tracking in the real traffic environment and provide a specific reference for the detection of traffic abnormalities.

TWO PROPOSALS CONCERNING ENHANCEMENT OF OCEANOGRAPHIC RESEARCH IN CHINA

Contemporary sciences are characterized by disciplinary diversity,so we cannot attend necessarily to each and every aspect of them.The development of oceanic sciences involves the exploration of marine resources,state sovereignty,national interests and the future of our motherland.Therefore,its actual significance,

构建粮食产业链供应链一体化体系的研究

全球经济衰退和贸易供应链中断相互叠加加剧了世界粮食安全风险,尽管我国粮食安全形势总体看好,但粮食安全仍不能忽视,需要树立新时代的粮食安全战略,构建与新发展格局相适应的粮食安全观,针对我国粮食安全的主要风险,从高效推动粮食全链发展、积极谋划粮食产业链供应链安全、加大粮食产业高质量发展力度等3个方面提出有针对性地构建粮食产业链供应链一体化体系政策建议,从而确保中国人的饭碗牢牢端在自己手中。

冲击破岩钻井提速技术研究现状与发展建议

提高钻井速度不仅是提高我国油气效益开发及深地勘探等方面的重要技术手段,同时对保障国家能源安全意义重大。冲击破岩钻井技术在国内外油田现场应用并获得了良好的提速效果,持续开展此类技术攻关有望攻克当下我国深地高温高压硬岩地层进尺低、提速难的技术痛点。介绍和分析了轴向冲击、扭力冲击和轴-扭耦合冲击辅助钻头破岩钻进技术方面的实践及发展动态。结合冲击破岩钻井技术现状,阐明了冲击辅助钻头破岩力学原理是冲击破岩钻井提速技术的关键问题,综述了国内外研究学者在冲击辅助钻头破岩物理实验、理论模型和数值模拟等研究方法上取得的科学进展。针对冲击破岩钻井提速技术的发展提出了相关建议,即加强在材料结构优化设计、智能化控制、多元技术融合和井场应用优化等方面的研究力度,为我国能源高效开发做出贡献。

从“两会”议案提案解读数字中国建设

“数字中国”是由党中央发起,全国人民共同参与,旨在加速建设社会主义现代化强国、实现中华民族伟大复兴的数字化运动。全国“两会”作为汇集民智、反映民意、影响民生的重要政治舞台,影响国家未来重点发展方向。本文基于2023年全国“两会”代表委员关于数字中国建设的议案提案,运用NVivo 11软件进行文本分析,从整体建设及重点问题与挑战两方面梳理了数字中国建设的发展现状,并在此基础上对未来数字中国建设提出相应建议与展望。

基于改进Faster RCNN的微操作空间目标检测算法

将Faster RCNN引入微操作系统的目标检测之中。针对微操作空间下待检测目标存在尺度变化和在显微镜放大倍数较小时,待检测目标尺度过小、特征不明显的问题,提出了一种基于改进Faster RCNN的微操作空间目标检测算法。使用在图像分类任务中性能优越的深度残差网络提取图像的特征。引入递归特征金字塔网络,对特征进行融合。改进区域建议网络的采样策略,对损失函数进行优化。实验结果表明:这种改进的Faster RCNN算法能有效解决由于目标尺度变化和目标尺度过小带来的问题。相比通用的目标检测算法,该算法的准确度更高,速度更快,具有实际应用价值。

2023年度国家自然科学基金联合基金项目申请受理、评审与资助情况综述

联合基金作为国家自然科学基金的重要组成部分,在引导和整合社会资源投入基础研究方面发挥了重要作用。2023年国家自然科学基金委员会稳步推进新时期联合基金改革,会同各联合资助方圆满完成了联合基金项目申请受理、评审与资助工作。本文统计分析了2023年度国家自然科学基金联合基金项目申请、受理与资助数据,分别介绍了项目指南发布、项目申请及其特点、项目初审、评审与资助的情况,并对2024年度联合基金工作进行了展望。

《公司法》修改中治理制度的创新、不足及完善

组织设置不合理、权责配置失当、股东行权保障不足、信义义务内容过于抽象是引发我国公司治理实践出现诸多问题的症结所在。在《公司法》修改中,三份草案和修订案都赋予章程设定除股东会及董事会之外的其他公司组织的自主权。新法通过降低股东临时提案权行使门槛、优化知情权行使规则、细化信义义务内容等方式力保股东权行使顺畅。但优化后的公司治理制度仍然存在不足:审计委员会的职能内容、人员构成及保障独立性的手段不合理或缺失,股东提案审查、持股期限要求及救济途径不够具体,针对董事和控股股东的责任规则亟待完善。立法应明确审计委员会的监督职能,区分其与监事会的责权界限;规定股东会召集人作为提案审查主体,增设事前救济机制作为股东行权保障;确认控股股东在公司治理中的实质地位,并实行职权代行制度;还应通过立法强化控股股东的行权规范。

福建富硒红壤区土壤硒含量特征及作物对硒的吸收

在调查我国南方红壤区土壤及农产品中硒含量状况的基础上,分析了富硒红壤中硒的分布特征及其所产农产品中硒含量的变化规律。结果表明:我国南方富硒红壤面积较大,但在地理空间分布上具有一定破碎度;土壤中的硒虽伴生一定量的重金属和稀土等元素,但与重金属或稀土元素的相关性不大;在富硒土壤上生产的农作物总体表现为可食部位的硒含量低于非可食部位的,并且农作物中的硒含量与土壤有效态硒含量相关性显著。依据我国南方富硒红壤区土壤自身特性,可以通过调控富硒红壤区农田土壤的酸碱度、水分含量、施肥种类、施用调理剂等来提高土壤硒的有效性,达到农产品中硒含量增加的目的;同时,对外源补硒的技术和相应农产品硒的健康效应,需进一步研究与规范。

大学公共俄语教学现状与教学改进建议

近几年,随着选择俄语作为高考外语考试科目的考生人数上升,进入大学后选修俄语为公共外语的学生也逐年增多。然而,在教学过程中我们发现,大部分俄语新生的词汇量、阅读与翻译能力、言语交际能力尚达不到大学俄语教学指南和大纲的基本入学要求。德州学院对全国35所高校的公共俄语教学情况进行了为期两年的跟踪调研,针对当前高校俄语生源成绩呈橄榄形分布的特点和学生需求,提出了适当增加公共俄语课时,优化师资配置,艺体生、文科生、理科生分班教学,更新细化教材内容,多校联合教学教研,为学生提供口语实践机会等建议,以提升大学公共俄语整体教学水平,为国家输送既懂专业又精通俄语的合格人才。

国家自然科学基金面上项目的遴选标准及其规范化探讨

同行评议的决策机制中,获取同行专家提供的评议意见很重要,管理者如何基于评议意见做出科学决策也同样不可忽视。国家自然科学基金项目管理者面对大量的项目,且每个项目包含有多个同行专家的评议意见,如何汇总项目的评议意见并从众多项目中优中选优开展项目遴选,倘若没有科学且可把握的遴选标准,遴选过程的不规范、不科学必然事实上将对获取的同行专家评议意见打折扣。因此,建立科学、规范的项目遴选标准,减少遴选过程中可能存在的随意性,避免其中人为因素干扰,是确保同行评议制度公正性的重要环节。

残障友好型社会的理论探讨与现实发展

残障友好型社会是人们对残障者与社会之关系认识不断深化的逻辑产物,它契合了我国新时代残疾人事业现代化的目标要求。通过对残障友好型社会的思想脉络、概念内涵和理论价值的阐述,力求将其发展为具有本土风格的残障理论和话语体系。“两个格外”的政治承诺,日益完善的制度体系,社会保障、公共服务和无障碍环境的持续改善等为残障友好型社会建设奠定了坚实基础。面对目前存在的问题,需要在今后中国式现代化进程中,确立符合国情的残障友好型社会建设理念,推进顶层设计和公共行动,加快无障碍环境建设,加强对不同范式下残障友好型社会的研究。

中国海洋能研究现状及未来发展建议

随着全球人口的增长、能源结构的转型和对可持续能源需求的增加,中国面临着优化其能源体系的紧迫任务。作为清洁、可再生的能源形式,海洋能成为国内外能源研究的焦点,其在中国具有巨大的开发潜力。在分析中国海洋能分布特征和发展现状的基础上,总结了中国海洋能开发的趋势,对未来的海洋能产业提出了构建面向“双碳”战略的海洋能顶层发展规划、建立健全海洋能技术的政策等建议,助力中国海洋能技术稳步发展。

一种智慧农业平台建设及应用研究

我国西北区域地广人稀,作业量大,水资源匮乏,通过智慧农业示范基地建设,探索适合西北干旱半干旱灌溉农业区大田作物智慧综合管理技术应用示范模式,充分挖掘出区域内智慧农业技术的应用潜力与发展前景,可以有力保障粮食和重要农产品稳定安全供给水平。本文以一种可以应用于西北干旱、半干旱地区大田作物的智慧农业平台为例,简述了平台应用管理系统的系统结构,从信息感知、传输、处理3个方面介绍了智慧农业技术在平台中的应用,分析了平台示范推广过程中面临的主要现实困境,并提出对策建议。