摘要：[Objective]Real-time monitoring of cow ruminant behavior is of paramount importance for promptly obtaining relevant information about cow health and predicting cow ***,various strategies have been proposed for monitoring cow ruminant behavior,including video surveillance,sound recognition,and sensor monitoring ***‐ever,the application of edge device gives rise to the issue of inadequate real-time *** reduce the volume of data transmission and cloud computing workload while achieving real-time monitoring of dairy cow rumination behavior,a real-time monitoring method was proposed for cow ruminant behavior based on edge computing.[Methods]Autono‐mously designed edge devices were utilized to collect and process six-axis acceleration signals from cows in *** on these six-axis data,two distinct strategies,federated edge intelligence and split edge intelligence,were investigat‐ed for the real-time recognition of cow ruminant *** on the real-time recognition method for cow ruminant behavior leveraging federated edge intelligence,the CA-MobileNet v3 network was proposed by enhancing the MobileNet v3 network with a collaborative attention ***,a federated edge intelligence model was designed uti‐lizing the CA-MobileNet v3 network and the FedAvg federated aggregation *** the study on split edge intelli‐gence,a split edge intelligence model named MobileNet-LSTM was designed by integrating the MobileNet v3 network with a fusion collaborative attention mechanism and the Bi-LSTM network.[Results and Discussions]Through compara‐tive experiments with MobileNet v3 and MobileNet-LSTM,the federated edge intelligence model based on CA-Mo‐bileNet v3 achieved an average Precision rate,Recall rate,F1-Score,Specificity,and Accuracy of 97.1%,97.9%,97.5%,98.3%,and 98.2%,respectively,yielding the best recognition performance.[Conclusions]It is provided a real-time and effective method for monitoring cow rumin

摘要：锚杆是岩土工程中应用最广泛的锚固结构之一。锚杆腐蚀严重影响锚固结构的长期使用性能,导致锚固工程过早失效破坏。砂浆锚杆的腐蚀退化机理尚不完全清楚,特别是考虑到岩体的天然裂隙和锚杆所受到的持续荷载作用。本文考虑天然裂隙和持续荷载,开展了锚杆腐蚀退化综合试验研究。对不同位置裂隙的混凝土-砂浆-锚杆试件进行了腐蚀试验。采用可施加持续应力装置对锚杆施加连续的轴向载荷,并采用电化学方法加速锚杆腐蚀。通过对不同腐蚀时间的锚杆进行拔出试验,得到了腐蚀试件的黏结滑移关系。进一步讨论了天然裂隙和连续荷载对锚杆腐蚀特性、腐蚀机理和黏结性能退化的影响。结果表明,锚杆腐蚀显著降低了砂浆锚杆的黏结强度和临界滑移长度。腐蚀程度为3.45%~4.98%的锚杆黏结强度较腐蚀前下降39.5%~65.8%。锚杆在天然裂隙附近更容易发生局部腐蚀。天然断裂越靠近加载端,腐蚀引起的黏结强度退化越严重。轴向载荷越大,腐蚀退化越明显。本研究解释了砂浆锚杆在裂隙岩体中的腐蚀退化机制,为锚杆支护耐久性设计提供了参考。

摘要：Electronic absorption bands of conjugated linear carbon chain molecules, namely polyynes H(C≡C)nH (n=5-7), are exploited to devise light-polarizing films applicable to the UV. Laser ablated polyynes are separated in size and dispersed in a film of polyvinyl alcohol (PVA), which is stretched to align the trapped linear polyyne molecules inside. As a nature of the structural anisotropy, transition dipole of the UV absorption for polyyne molecules is in parallel with the molecular axis and the absorption occurs only for the electromagnetic wave having the amplitude of its electric vector along the molecular axis. Aligned and fixed orientationally in the solid PVA film, polyyne molecules act as selective absorbers of one of the polarization components of incident light at particular wavelength. Using a light source of linearly polarized UV light, whose direction of polarization is rotatable, angular dependence of the absorption intensity is investigated for the stretched PVA film containing aligned polyyne molecules and analyzed in terms of an order parameter in the theory of linear dichroism.

摘要：地铁郊区线路是城市通勤的重要方式,在早高峰期间可将郊区通勤乘客快速运送至中心城区的工作地点。由于通勤客流的巨大需求以及目的地集中性,即早高峰期间大多由郊区各站流向中心城区若干站点,导致列车和车站站台的过度拥挤,尤其是靠近市中心的地铁车站。据此,本文构建了列车运营计划与客流控制协同优化模型,列车运营计划包括大小交路和非等间隔时刻表服务。优化目标为降低最大站台滞留人数、站外总限流人数以及列车的总走行公里。为保证方案的可行性,模型考虑了列车车底的衔接以及最大可用车底数限制。针对所提出的大规模非线性模型,设计了嵌套暴力搜索的遗传算法进行求解。北京地铁房山线案例表明,本文提出的站外限流和小交路计划可有效降低靠近市中心的地铁车站的滞留乘客数,缓解高峰期拥挤现象。与现实无限流方案和本文无小交路方法相比,本文综合优化方法可提升目标函数的优化率超过14.8%。

摘要：基于信息质量的相关理论,采用PSP/IQ模型建立了衡量供应链中信息质量测评指标构建方法。首先通过PSP/IQ模型对指标进行分析,归类至对应的四个一级指标,建立测评指标框架。然后引入网络层次分析法,通过问卷调查、专家打分等方法,从定性和定量两方面对信息质量指标的权重进行计算。最后建立了较完整的衡量供应链信息质量的评估标准。

摘要：厚壁小边腿截面的冷弯成型具有成型力大、尺寸不易控制、成型稳定性差等缺点.本文介绍一种高精度的厚壁小边腿截面冷弯成型的带钢宽度计算方法以及轧辊设计方案.完成了成型过程的FEA仿真,给出并分析了仿真结果.结果表明:采用的带钢宽度计算方法和制定的成型工艺是合理的.仿真结果为顺利地生产出合格的产品提供了理论依据.

摘要：针对某汽车机械制造公司生产流程中会产生工人疲劳和职业伤害的手工搬运作业,从人因工程的角度,基于ERGO仿真软件的Kcal预测模型进行手工搬运作业负荷的仿真和评估分析。利用ERGO软件、人体动作能耗预测模型以及Kcal模型,提出Kcal/ERGO总体流程设计方案,并对各个部分设计进行了详细的描述。结果表明:该设计在软件中直观地反映了工人在工作中的每一个动作和流程能量消耗的情况,通过能量消耗值的大小判断该工序是否属于工人的承受范围之内以使生产环境符合人因工程设计,保证工人能在安全、健康、舒适的工作条件下工作。

摘要：针对审计信息化建设过程中数据安全管理与应用的矛盾问题——审计数据分析实验性和保密性与审计数据分析规范性和共享性之间的矛盾,提出一种生产数据结构隔离结合实验数据漂白的数据安全管理和应用架构.该架构作了3部分设计:第1部分是数据标准化,主要是采集后的审计数据清洗和数据标准化应用;第2部分是对标准化数据的结构隔离和数据漂白,分别隔离存储在应用数据库和实验数据库;第3部分是将不同的数据应用在实验数据库和应用数据库中转换、还原.最后,使用数据分析原子串联形成审计业务数据分析模型,并在应用数据库上运行模型,得到业务所需的数据分析结果.

摘要：大规模定制生产的质量控制体系建立在全面质量管理基础上,针对制造型企业采用大规模定制生产模式的特点,为提高质量控制系统的效率,提出改进型AEWMAQ控制图。使用TURNSIM仿真系统模拟相关数据,通过VBA创建用户自定义动态数据交换对Excel/Minitab交互系统进行二次开发,实现数据实时共享。通过实验验证了此交互系统的可行性,且AEWMAQ控制图较传统控制图具有更高的灵敏性和预测能力。将该系统运用于大规模定制生产的过程质量控制中,提升了质量监控的便捷性,同时降低了企业的生产成本。

摘要：The imbalance of energy consumption in wireless sensor networks(WSNs)easily results in the“hot spot”problem that the sensor nodes in a particular area die due to fast energy *** order to solve the“hot spot”problem in WSNs,we propose an unequal clustering routing algorithm based on genetic algorithm(UCR-GA).In the cluster head election phase,the fitness function is constructed based on the residual energy,density and distance between nodes and base station,and the appropriate node is selected as the cluster *** the data transmission phase,the cluster head selects single-hop or multi-hop communication mode according to the distance to the base *** we comprehensively consider the residual energy of the cluster head and its communication energy consumption with the base station,an appropriate relay node is *** designed protocal is simulated under energy homogeneous and energy heterogeneity conditions,and the results show that the proposed routing protocal can effectively balance energy consumption,prolong the life cycle of network,and is appicable to heterogeneous networks.