A Double-Interactively Recurrent Fuzzy Cerebellar Model Articulation Controller Model Combined with an Improved Particle Swarm Optimization Method for Fall Detection

In many Eastern and Western countries,falling birth rates have led to the gradual aging of society.Older adults are often left alone at home or live in a long-term care center,which results in them being susceptible to unsafe events(such as falls)that can have disastrous consequences.However,automatically detecting falls fromvideo data is challenging,and automatic fall detection methods usually require large volumes of training data,which can be difficult to acquire.To address this problem,video kinematic data can be used as training data,thereby avoiding the requirement of creating a large fall data set.This study integrated an improved particle swarm optimization method into a double interactively recurrent fuzzy cerebellar model articulation controller model to develop a costeffective and accurate fall detection system.First,it obtained an optical flow(OF)trajectory diagram from image sequences by using the OF method,and it solved problems related to focal length and object offset by employing the discrete Fourier transform(DFT)algorithm.Second,this study developed the D-IRFCMAC model,which combines spatial and temporal(recurrent)information.Third,it designed an IPSO(Improved Particle Swarm Optimization)algorithm that effectively strengthens the exploratory capabilities of the proposed D-IRFCMAC(Double-Interactively Recurrent Fuzzy Cerebellar Model Articulation Controller)model in the global search space.The proposed approach outperforms existing state-of-the-art methods in terms of action recognition accuracy on the UR-Fall,UP-Fall,and PRECIS HAR data sets.The UCF11 dataset had an average accuracy of 93.13%,whereas the UCF101 dataset had an average accuracy of 92.19%.The UR-Fall dataset had an accuracy of 100%,the UP-Fall dataset had an accuracy of 99.25%,and the PRECIS HAR dataset had an accuracy of 99.07%.

表接(Articulation)刍议

“表接”(Articulation)是斯图亚特·霍尔(Stuart Hall)的关键概念。在文化研究发展史的脉络中,霍尔以其实现了对于文化主义范式与结构主义范式的超越。较之于该理论在霍尔整体思想脉络中的关键性,国内外研究者对之展开的关注与讨论仍嫌不足。现有研究一般沿袭霍尔关于表接的描述而并未对之进行进一步的提炼与分析,这便导致了如下困境:人们一方面承认表接对于霍尔乃至整个文化研究的重要性,但另一方面对其定义与理论特征语焉不详。实际上,在霍尔的理论语境中,表接乃是一种受到多元决定作用的、无主体的异质连接。霍尔运用表接所展开的社会构型分析与文化身份批评引领了其个人乃至整个文化研究的理论转向。

“Articulation”与后马克思主义的偶然性逻辑———从拉克劳和墨菲的“articulation”谈起

该文认为,“articulation”是拉克劳、墨菲的后马克思主义的一个核心概念,它的基本意思是“链结”。该文从词源上考察了“articulation”一词的意义及其历史演变,并对其基本含义和特征做了深入的分析。该文认为,链接是理解后马克思主义的偶然性逻辑的核心概念。链接是发生在主体身份之间的,话语性的,偶然性的建构实践活动。但拉克劳、墨菲的链接虽然力图避免近代哲学的本质主义和还原主义,但却仍然避免不了其精致的“唯心”倾向和向上的还原论的嫌疑。我们对此要有清晰的认识。

Value of acoustic perceptual method for analysis of compensatory articulation errors in postoperative patients with cleft palate

Objective To establish an acoustic perceptual method analyzing the compensatory articulation errors in children with operated cleft palate via the formants of Chinese pure vowels. Methods The first three formants which represent vocal transmission character in Chinese pure vowels of 84 subjects with operated cleft palate, were measured by Computerized Speech Signal Processing System (CSSPS). The Chinese vowel graph of postoperative patients with cleft palate was stated by the first formant frequencies (F1) and the second formant frequencies (F2) of the Chinese pure vowels between the two groups. Results Values of F1 and F2 of vowels except [a] in the poor articulation group (Group A) were significantly different from those in the good articulation group (Group B) (P<0.05 or P<0.01). As compared with that in Group B, the vowel graph demonstrated the decreased perceptual distances in Group A. These findings indicated that there might still be the backward movements of tongue, perverted mandibular movements and disharmonious lip movements in addition to the velopharyngeal insufficiency (VPI) in Group A. Conclusion The speech articulation of children with repaired cleft palate should be gained by correcting the aberrant compensatory articulation errors in the condition of velopharyngeal competence. Computerized Speech Signal Processing System (CSSPS), which is regarded as the content of objective quantitative measurement, is a precise, simple, reliable and atroumatic technique for children with cleft palate to analyze pathological compensatory articulation errors.

A fitted formula for calculation of three-section solenoids inductance

An algorithm for precisely calculating the inductance of a three-section solenoid is presented, which is based on summing the layer self-inductances and the mutual inductances. A theoretical model with ex plicit expressions is firstly developed to calculate the self-inductance of a single layer, and then numerical calcu lation of the mutual inductance between two layers is introduced. Using the presented computation method, the inductance of a solenoid designed in the experiment is successfully calculated （4.30 mH）, which has a difference of less than 1% from the experimental data.

A Three-section Algorithm of Dynamic Programming Based on Three-stage Decomposition System Model for Grade Transition Trajectory Optimization Problems

This paper introduces a practical solving scheme of gradetransition trajectory optimization(GTTO) problems under typical certificate-checking–updating framework. Due to complicated kinetics of polymerization,differential/algebraic equations(DAEs) always cause great computational burden and system non-linearity usually makes GTTO non-convex bearing multiple optima. Therefore, coupled with the three-stage decomposition model, a three-section algorithm of dynamic programming(TSDP) is proposed based on the general iteration mechanism of iterative programming(IDP) and incorporated with adaptivegrid allocation scheme and heuristic modifications. The algorithm iteratively performs dynamic programming with heuristic modifications under constant calculation loads and adaptively allocates the valued computational resources to the regions that can further improve the optimality under the guidance of local error estimates. TSDP is finally compared with IDP and interior point method(IP) to verify its efficiency of computation.

The Articulation of the Lifestyle in Community After People Sold Their Lands at Kutuh Village, South Kuta County

The purpose of the study is to know the articulation of lifestyle in community after people sold their lands at Kutuhvillage, South Kuta County. This research began with to do investigation into village inventory people who soldtheir lands and then classified into several subsequent of the lifestyle according to this data. After that, theinformation was examined from view of the articulation of lifestyle in community after people sold lands ground.This research was carried out with the method of survey and observations on the field about the lifestyle incommunity after people sold lands. The researcher used the method of purposive samplings that were specified keyinformants and continued in the method of snowball in the purpose to get much data and information from anothersources. And this research used interviews as tool of investigation of an interview. From the results of interviewswith interviewers, researcher examined these informations and the form of change to descriptive. From the resultsof the study, researcher can conclude that the articulation of lifestyle in community has been described that thetraditional lifestyle changes to modem lifestyle, for examples, clothing patterns, the pattern of food, recreationalpatterns, the ownership of the means of transport, the condition of the dwelling house architecture, and places ofworship.

Computing All Pairs Shortest Paths on Sparse Graphs with Articulation Points

In most network analysis tools the computation of the shortest paths between all pairs of nodes is a fundamental step to the discovery of other properties. Among other properties is the computation of closeness centrality, a measure of the nodes that shows how central a vertex is on a given network. In this paper, the authors present a method to compute the All Pairs Shortest Paths on graphs that present two characteristics： abundance of nodes with degree value one, and existence of articulation points along the graph. These characteristics are present in many real life networks especially in networks that show a power law degree distribution as is the case of biological networks. The authors＇ method compacts the single nodes to their source, and then by using the network articulation points it disconnects the network and computes the shortest paths in the biconnected components. At the final step the authors proposed methods merges the results to provide the whole network shortest paths. The authors＇ method achieves remarkable speedup compared to state of the art methods to compute the shortest paths, as much as 7 fold speed up in artificial graphs and 3.25 fold speed up in real application graphs. The authors＇ performance improvement is unlike previous research as it does not involve elaborated setups since the authors algorithm can process significant instances on a popular workstation.

Fuzzy Reliability Design for the Interference Articulation of a Roller Shaft

With regard to function, the strengths for interference articulation of a roller shaft formed a series system. As the three strength reliabilities conditioned each other, there was a problem for the system reliability to apportion rationally. In fact, there was a transition from safety to deactivation. The state of structure was fuzziness which was in both safety and non-safety states. Therefore the reliability was a fuzzy event which considered the randomness for some design parameters and the fuzziness for the thresholds between generalized strength safety and deactivation. The mathematical model of fuzzy reliability design for the interference articulation of the roller shaft was presented. Eight design examples were calculated.

自驱动双关节模组同步控制系统研究

针对自驱动关节臂测量机双关节模组的双电机同步控制问题,根据双关节模组的组成结构和工作原理设计了一种双关节模组同步控制系统。该系统采用LabVIEW软件搭建双电机的上位机控制界面,主控制器为FPGA,两者通过USB串口通信;STM32为双关节模组内部的核心处理器,通过CAN总线与主控制器通信。通过设定不同的负载和速度进行了正反转对比实验,得到双关节模组电机最大转速误差为4.26%,关节转角的最大误差为0.25°,两电机同步时间控制精度为2 ms,验证了双关节模组在负载状态下仍满足技术指标要求,为提高传动精度提供了依据。

整体性治理视域下巩固拓展脱贫攻坚成果与乡村振兴有效衔接研究

2020年年底,我国全面打赢脱贫攻坚战后全面建成小康社会,巩固拓展脱贫攻坚成果与乡村振兴有效衔接成为目前重要且紧迫的工作任务。巩固拓展脱贫攻坚成果与乡村振兴衔接具有跨领域性和多元繁杂性,二者衔接存在政策衔接不畅、资源配置分散、行动实践缺乏双向协同、治理结构模糊等“碎片化”问题。破解二者衔接所凸显的“碎片化”现象亟须借助于以“承担公共责任,满足公众需求”为根本指向,以“协调、整合”为核心的整体性治理理论提供解决思路。因此,基于整体性治理视角提出解决二者衔接进程中“碎片化”问题的关键举措:整合政策冲突,做实政策衔接;加强资源整合,实现资源有效衔接;健全协同合作的工作机制,确保行动精确衔接;优化组织协同,构筑多元治理结构。为巩固拓展脱贫攻坚成果和乡村振兴的全面实施,加快农业农村现代化建设和实现全民共同富裕提供实践研究。

基于Articulate Storyline的微习题设计与开发

微习题是针对微课的学习目标,用于检测微课学习效果,并通过信息技术手段快捷反馈和评价的微小练习题目。文章分析了微习题的开发与应用现状,根据微课教学的三维目标、Articulate Storyline的优势、题型及特点,运用系统设计的理念,通过具体案例阐述了微习题的设计过程与技术实现方法,以期指导教师在开发设计微课的同时,开发具有交互性、适用性、简便性的微习题。

正断层错动作用下浅埋地铁隧道受力分析方法及抗断设计研究

震害调查研究表明穿越活动断裂带隧道的破坏是极其严重的。以太原市城市轨道交通1号线一期工程区间隧道穿越交城断裂带为工程依托,通过Pasternak双参数地基模型建立力学分析模型并推导了正断层错动下地下管线纵向响应解析解,然后采用ABAQUS软件建立了三维精细化有限元模型。解析解计算结果与数值模拟计算结果吻合度较好,证明了解析解的正确性。最后,在设定的重点设防区域内采用节段衬砌+柔性接头组合形式,对比分析节段长度、接头纵向位置和柔性接头宽度对隧道结构整体减灾效果影响。结果表明:正断层错动下地下管线纵向响应的解析解计算结果可为重点设防区域的确定提供参考。采用节段衬砌+柔性接头组合形式可有效降低隧道结构的破坏程度和范围。正断层错动作用时,节段长度越短隧道结构破坏范围越小,柔性接头宽度的增加会降低隧道结构的破坏程度和范围,破坏区域集中在节段衬砌结构的端头部位。采用对缝模式设置柔性接头时可最大程度发挥接头的变形吸能作用,其减灾效果最优。研究可为穿越活动断裂带隧道工程采用节段+柔性接头组合形式的抗断设计和分析提供理论依据。

用Articulate Storyline制作网络多媒体课件的实践

利用Articulate Storyline软件制作可用于PC和移动端运行的网络多媒体课件,具有内容丰富、设计新颖、便于读者操作并能与读者有效互动等特点,是传统教学模式的有效补充。

表面淬火技术在液压支架中的研究与应用

随着液压支架设计与制造技术的日益发展,对液压支架使用寿命要求越来越高。作为液压支架动作(摩擦)的核心部位,立柱的活柱杆头、外缸底表面及顶梁与掩护梁的铰接轴、掩护梁与连杆的铰接轴、连杆与底座的铰接轴等几个摩擦部位是影响液压支架使用寿命最核心的部位。根据以往的经验,这几处动作(摩擦)部位的零部件通常损坏较严重,难以修复。因此,提高这些零件摩擦部位的寿命对液压支架整体寿命的提高有很重要的意义。

学前言语障碍听障儿童构音语音能力的影响因素

目的探讨影响学前言语障碍听障儿童构音语音能力的相关因素。方法纳入2018年9月至2022年9月山东省听力语言康复中心收治的言语障碍听障儿童39例。用黄昭鸣-韩知娟词表测试言语障碍听障儿童的汉语构音语音能力,将其测试结果与自编问卷7个维度的因素进行分析。结果不同性别、年龄学前言语障碍听障儿童声母清晰度、韵母清晰度、声调清晰度、汉语构音清晰度比较,差异无统计学意义(P>0.05)。不同助听效果、听觉年龄、康复训练时间、带养家长文化程度、家庭喂养方式、学前言语障碍听障儿童声母清晰度、韵母清晰度、汉语构音清晰度比较,差异有统计学意义(P<0.05),不同听觉年龄声调清晰度比较,差异有统计学意义(P<0.05)。结论学前言语障碍听障儿童的助听效果、听觉年龄、训练时间、家长文化程度及家庭喂养方式影响其构音语音能力。积极而有针对性地早干预,可预防和减少构音语音障碍的发生,也为言语障碍更有效地治疗提供参考依据。

关节机器人用偏心削极SPMSM气隙磁场解析计算及可视化平台研究

采用子域法对表贴式永磁同步电机(SPMSM)进行建模,对电机内部磁场进行解析计算。针对传统子域法无法应用于采用偏心削极结构的SPMSM的问题,对不等厚偏心削极的永磁体子域,提出等面积分块的处理方式,将每个磁极块单独进行解析计算。将线性叠加结果与有限元法和实验结果进行对比,结果表明所提方法有较高的计算精度。此外,将不同种类电机及子域建模方法进行整合,建立用户交互平台,使计算过程可视化,为国产化工程应用软件提供可扩展性,辅助电机设计与分析工作。

某轻型客车加速工况进气噪声品质优化研究

针对某轻型客车发动机转速2 000~3 000 r/min范围内加速过程中存在类似“咆哮”声的异响问题,首先,采用滤波和主观评价相结合的方法确认异响的主要来源为发动机7~21阶次辐射噪声;然后,基于“源-路径-响应”模型,在台架上利用发动机倒拖方法分析可知,噪声产生的主要原因为发动机气缸活塞往复运动吸、排气过程产生的压力脉动,并采用声源覆盖法等方式识别出噪声辐射来自中冷器出气管。最后,通过优化中冷器出气管结构提高管壁的隔声能力,验证结果表明,问题发动机转速区间加速过程车内清晰度指数平均提高了5百分点,声品质得到明显改善。

新时代大中小学思政课一体化高效衔接:价值意蕴、历史逻辑与实践进路

大中小学思政课一体化建设是落实立德树人根本任务的一项育人工程,高效衔接是其中的关键所在。一体化高效衔接是按照不同学段学生心智成熟程度的成长规律以及思政课教学规律,对各个学段存在壁垒的思政课进行整体布局与统筹安排,其目标导向契合国家立德树人的根本任务,其育人格局有助于回应培养胸怀国之大者的人才战略诉求。一体化高效衔接理念发端于中华人民共和国成立时期,到改革开放之后展开要素建设,再到党的十八大之后形成系统。新时代促进一体化高效衔接要构建网络资源平台,完善课程内容,统筹教材体系,建强教师队伍,优化体制机制,从而促进一体化建设创新发展。