455 research outputs found

    Design and Implementation of System for Story of Picture Book Game Based on IOS

    Get PDF
    随着现代科技不断地与飞跃式快速进步,手机、平板、手表等移动设备的迅猛发展,越来越多人的学习,游戏时间变得越来越碎片化,阅读如是。由于人们可以在公交车上,椅子上,甚至于走路时都可以使用移动设备,所以电子读物的使用场景也变得越来越丰富。传统有的以图文形式呈现的绘本已慢慢无法满足人们的阅读需求,固其正在一步步往多媒体的方向转变,这也是移动端绘本游戏开发的客观需求。 绘本用简单的文字和图画结合可以非常形象直观地向人们表达其所要表达的主题和内容。这一点对孩童是非常有帮助的,因为孩童的思维也较为简单,绘本这种形象直观的方式结合上一些寓教于乐的内容,既能引起孩童的共鸣,亦能让孩童喜欢上阅读。市面上看到的绘...With the development and the rapid growth of modern technology, there are more and more mobile phones, tablets, watches and other devices. The time to study and play becomes fragmented, so as reading time. Electronic books usage scenarios are more abundant, since people can use devices when commuting on the bus, when sitting on the chair, even when walking on the road. Traditional picture books th...学位:工程硕士院系专业:软件学院_软件工程学号:X201323023

    Application of scan pitot-pressure rake in hypersonic propulsion wind tunnel flow field measurement

    Get PDF
    在风洞实验中,为了保证实验结果的可靠性,首先需要了解流场的品质.笔者自行设计研制了用于高超声速推进风洞流场测量的带有水冷装置的可移动式扫描总压耙.对于出口截面为300mm×187mm的风洞喷管,通过计算机程序控制,可在3s时间内实现全截面间歇式或连续式扫描,最大移动速度可达250mm/s,而且定位准确.通过扫描结果,分析了流场压力均匀性、稳定性以及实验结果的可重复性,同时还给出了风洞喷管出口截面的总压与马赫数等值线图.从而为超燃冲压模型发动机实验提供参考数据

    基于ABAQUS的谐波减速器装配及运转过程中柔轮的力学响应分析

    Get PDF
    该文设计了一种谐波减速器,基于ABAQUS建立了谐波齿轮减速器的三维有限元模型,采用接触非线性分析,分别进行了装配和动态运转过程的仿真,以获得谐波齿轮减速器关键柔性件柔轮的应力应变响应。计算结果说明:由于轴承滚珠的作用,在柔轮长轴处的齿圈中与分布滚珠相对应的位置,因变形不均匀而产生较大的应力集中;装配后柔轮最大应力位于齿根处,在动态运转状态下最大应力位于齿宽中间位置的齿顶啮入接触处。该结果对谐波齿轮减速器的结构设计改进提供了一个重要的参考。本研究受国家自然科学基金(项目编号:No.51475396)、国家重点基础研究发展计划(973计划)(项目编号:No.2013CB733004)资助

    A Study on Evaluation of the Performance of Public Expenditure on Poverty-alleviating—Based on the Data of National Key Poverty-alleviating Counties

    Get PDF
    文章运用2003-2010年国家扶贫工作重点县数据,实证评价了公共财政扶贫支出绩效,并基于标杆管理思想设置了评价标准。研究发现,近年来公共财政扶贫支出绩效基本呈持续上升趋势,但是在财政资金带动和配置结构方面亟需改进,同时应大力改善贫困地区住房、医疗和教育条件,并提高扶贫对象的自我脱贫能力。The paper evaluates empirically the performance of public expenditure on poverty-alleviating with the data of nation-al key poverty-alleviating counties from the year of 2003 to 2010,then sets up the evaluation criteria based on benchmarkingmethod.The study shows that the performance of public expenditure on poverty-alleviating has been improving in recent years,however,the driving effect and expenditure structure of public funds need to be improved urgently.Meanwhile,great effortsshould be put on improvement of housing,health and education conditions,and enhancement of the poverty groups' ability to get out of poverty by themselves in poor regions.国家社会科学基金重大项目(10zd&036

    PDE/Scramjet组合循环发动机实验研究

    Get PDF
    本文对一种新概念的PDE/Scramjet 组合循环发动机在自由射流推进风洞中进行了实验研究。着重研究了点火、凹腔对发动机性能的影响。实验发现, 由爆轰管尾部带来的大扩张结构需要强制点火才能保证超燃发动机的稳定燃烧。此外发动机侧面凹腔的引入,对性能有利也有弊,需要进一步权衡。本文还开展了PDE/Scramjet 的联合实验,由于PDE 燃料流量只有超燃发动机的1%左右,导致PDE 对整体发动机性能贡献很小。最后,本文还采用总压恢复模型对组合循环发动机的推力阻力进行了分析

    Advance in research of water-proof liquid band-aid

    Get PDF
    创可贴是人们生活中最常用的外科用药。传统的创可贴即是一长形胶布,中间附以浸过药物的纱布,从而起保护伤口,暂时止血的作用。传统创可贴适合创伤较为表浅,伤口整齐干净、出血不多而又不需要缝合的小伤口使用。本文所要讲述的液体创可贴可用于大部分的外伤伤口,能够及时止血及防止病原微生物的感染。本文主要讲述了近些年刚刚出现的防水型液体创可贴,包括其主要的作用,材料组成及相关临床研究。Band-aid is the most commonly used surgical medication. The traditional band-aid is a longshaped adhesive,and the intermediate layer accompanied by soaking medicine gauze,thereby used for the wound and temporary hemostasis. The traditional band-aid is suitable for shallow trauma,small wound,clean and tidy wound,less bleeding and the wound that needs no suture. In this article we introduced a liquid band-aid that can be used for most of the traumatic wound,can timely stop bleeding and prevent microbial infection. We mainly described the waterproof liquid band-aid appeared in recent years,including its main effects,material composition and related clinical research

    Effect and mechanism of TIPE3 interference plasmid on SW480 colorectal cancer growth

    Get PDF
    目的:通过TIPE3干扰质粒转染SW480结肠癌细胞,验证干扰TIPE3表达对SW480结肠癌细胞生长的影响并探讨相关机制。方法:构建TIPE3; -shRNA-pSIREN-RetroQ干扰质粒,通过脂质体转染法成功将干扰质粒导入SW480细胞,通过RT-PCR、Western; blot检测重组质粒的干扰效率。应用CCK-8方法检测SW480细胞生存率。AnnexinV-FITC/PI流式细胞法检测细胞凋亡。使用West; ern; blot检测细胞增殖、凋亡相关分子的表达情况。结果:成功设计、构建和筛选具有生物活性且干扰效率最佳的TIPE3-shRNA-pSIREN-Ret; roQ干扰质粒。CCK-8检测证实干扰SW480结肠癌细胞TIPE3表达可以抑制细胞生长。流式结果显示,TIPE3-shRNA3干扰组的凋亡率为; (27. 991. 087) %,显著高于正常细胞组(12. 102. 213) %及转染空载质粒组(11. 440. 277 0); %。证实了降低TIPE3表达可以增加SW480对aDR5ScFv所诱导的细胞凋亡敏感性。Western; blot结果显示干扰TIPE3表达可以活化caspase3蛋白,降低p-AKT、p-PDK1、PCNA等分子的表达。结论:干扰TIPE3的表达对; SW480结肠癌细胞具有促进凋亡,抑制增殖的作用。Objective: To study the effect of interference TIPE3 on the colon cancer; cell growth by transfecting SW480 colon cancer cells with the TIPE3; interference plasmid were detected. Methods: Transfecting the; constructed TIPE3-shRNA-pSIREN-RetroQ plasmid to SW480 cells. To; determine the highest interference efficiency plasmid, the mRNA and; protein levels of recombined plasmid were detected by RT-PCR and Western; blot separately and tested the cell proliferation with CCK8. Meanwhile,; apoptosis rate of SW480 cells was determined by flow cytometry assay; with AnnexinV-FITC/PI. To further determined the effects of recombined; plasmid on cell development, the level of protein involved in; proliferation and apoptosis were detected by Western blot. Results: The; most effecient interference plasmids were successfully constructed. We; found that the cell survival rate decreased when interference TIPE3 gene; expressing in colorectal cancer cells. Flow cytometry indicated that; interefering the expression of TIPE3 would increase the sensitivity of; SW480 cell to apoptosis induced by aDR5ScFv. The results of Western blot; showed that low expression of TIPE3 would activate caspase3 and; downregulate the expression of p-AKT,p-PDK1 and PCNA. Conclusion:; Interference TIPE3 could promote apoptosis and inhibit proliferation in; SW480 colon cancer cells.国家自然科学基金; 福建省属公益类科研院所基本科研专项项

    基于关系强度框架的组织际关系分类研究

    Get PDF
    建立以合作为主要特征的组织际关系是企业获得竞争优势的重要手段,提出一种基于关系强度框架的组织际关系分类,该方法是以基于交易关系的经济和行为维度而建立起来的关键中介变量集为度量指标,把组织际关系分为4种类型:双边关系、周期性关系、层级关系以及分散关系。通过实证研究对交易关系中的供应商进行分类,为管理者分析和计划组织际关系的发展提供一种机制,具有一定的参考意义

    深度卷积神经网络应用于人脸特征点检测研究

    Get PDF
    为解决在复杂环境下,如姿势不同、光照条件以及遮挡等因素导致传统人脸特征点检测算法的精度大幅度下降的问题,在特征点检测理论知识以及研究现状的基础上,针对传统卷积神经网络模型在处理人脸特征点检测问题时的不足之处,提出基于小滤波器的深卷积神经网络。算法引入小滤波器思想和以拓展\"网络深度\"优先的深层卷积神经网络模型,针对人脸特征点检测重新设计训练,提高了算法的有效性与适用性。通过将算法应用于ALFW和AFW人脸数据集上预测5点人脸特征点问题,并与其他多个经典算法进行对比分析,结果表明:基于小滤波器的深卷积神经网络在预测人脸5点特征点问题上有更好的准确性和鲁棒性。福建省中青年教师教育科研项目(No.JZ160238);;国家自然科学基金(No.61502402);;福建省自然科学基金(No.2015J05129
    corecore