摘要：In this work, a facile strategy is proposed to construct stretchable electronics based on agarose hydrogels. The hot agarose solution is casted onto a template with patterned Ag nanowires, endowing agarose hydrogel with patterned conductive surface. After further heating treatment, Ag nanowires can be embedded into the agarose hydrogel, which improves the stability of Ag pattern and has no obvious e ffect on the conductivity of hydrogels. The agarose hydrogel with patterned Ag nanowires is certi fied to be an e ffective stretchable electrode to record the motion of joints, which has great potential applications in the field of wearable devices.

摘要：基于现代纺织产业对复合应用型工程人才的需求,结合“机织学”教改实践,重构课程知识体系,构建以课程实验、认识实习、专业实习、课外科技竞赛和毕业设计组成的“五位一体、耦合递进式”产教融合实践课程体系,致力于培养学生工程实践能力、团队沟通协作能力和理论与实践结合的能力,实现学生工程创新能力和学科育人水平的综合提升。采用调查问卷和课程目标达成度分析对实践教学效果进行科学评价、学情分析,持续改进教学效果。研究成果对后续“新工科”专业课程建设提供研究思路和可借鉴模式。

摘要：用于服务器、电信、数据通信、网络及工业设备的最新FPGA、处理器、ASIC及相关内存的复杂性和性能使这些应用的功率需求不断增加。由于增加输出容量的目标和维持甚至减小解决方案电路板占用面积的目标相互冲突,所以占用空间仍然是推动对更高功率密度负载点(POL)解决方案需求的重要因素。从电源设计的观点看,这会带来三个具体挑战:热管理、电源解决方案的紧凑程度和瞬态响应改进。同时克服这三个挑战需要大量电源专业知识和设计资源;因此,许多系统设计工程师转而使用模块电源,用以快速和可靠地

摘要：四川某10×10^(4)m^(3)/d的CASS工艺污水厂需进行地表水准Ⅳ类提标改造,面临进水负荷及出水水质同步提升问题。为此重新校核了进水水质,采用MBBR工艺强化系统处理负荷,将原CASS池划分为MBBR生化池和沉淀池,改造D型滤池为砂滤池,并新建深床滤池。改造后,出水水质稳定优于地表水准Ⅳ类水,且抗冲击能力显著加强,出水氨氮、总氮、总磷分别达到(0.53±0.30)、(6.70±1.40)、(0.20±0.05)mg/L;吨水及吨污染物处理能耗分别增加10%和4%,吨水碳源投加量增加15%,吨污染物碳源消耗量下降8%。针对硝化,该系统仍具备20%的水质提升及10%的水量提升潜力,可进一步扩容或应对进水水质可能增加的风险。实践证明,MBBR可满足较大范围的提标或扩容需求,其集约、高效、抗冲击等优势显著。

摘要：提出一种基于物联网的智能电动执行器自动化控制系统,以满足工业自动化对电动执行器更高效能的需求。该系统通过引入自适应动态规划和强化学习算法,结合多传感器融合技术,实现对执行器的精确控制和实时监测。实验平台的评估结果显示,系统在响应时间、控制精度以及网络吞吐量方面达到了工业标准。此外,轨迹跟踪测试表明,系统在多种运动条件下均表现出较高的精度。该系统有效增强了电动执行器的自动化控制能力,具备在复杂工业环境中的应用潜力。

摘要：Pullout resistance of a soil nail is a critical parameter in design and analysis for geotechnical engineers. Due to the complexity of field conditions, the pullout behaviour of cement grouted soil nail in field is not well investigated. In this work, a number of field pullout tests of pressure grouted soil nails were conducted to estimate the pullout resistance of soil nails. The effective bond lengths of field soil nails were accurately controlled by a new grouting packer system. Typical field test results and the related comparison with typical laboratory test results reveal that the apparent coefficient of friction （ACF） decreases with the increase of overburden soil pressure when grouting pressure is constant, but increases almost linearly with the increase of grouting pressure when overburden pressure （soil depth） is unchanged. Water contents of soil samples at soil nail surfaces show obvious reductions compared with the results of soil samples from drillholes. After soil nails were completely pulled out of the ground, surface conditions of the soil nails and surrounding soil were examined. It is found that the water content values of the soil at the soil/nail interfaces decrease substantially compared with those of soil samples extracted from drillholes. In addition, all soil nails expand significantly in the diametrical direction after being pulled out of ground, indicating that the pressurized cement grout compacts the soil and penetrates into soil voids, leading to a corresponding shift of failure surface into surrounding soil mass significantly.

摘要：随着网络技术的发展,网络规模逐渐扩大,网络结构越来越复杂,为了便于加强网络管理,需要对IP网络流量进行测量和预测。针对上述情况,本文基于NetFlow协议、按照优化设计的组网方案进行数据流捕获,设计了IP网络流量采集系统,提出了一种基于支持向量机的流量预测的方法。最后,通过实例验证了该方法的有效性和可行性。

摘要：本文从培养具有"创造性思维"和"创造性实践能力"人才的角度,探讨作为高等职业教育组成部分的高职艺术设计教育如何适应现代社会人才培养观的需要,怎样才能符合现代社会对人才素质培养的要求。提出在高等职业技术教育背景下如何摆脱高等教育的传统教学模式,与高等职业教育的特点相适应,达到社会化需要对艺术设计人才培养观的总体要求,充分发挥高等职业技术教育作为高等教育的一个组成部分的重要性。

摘要：文旅产业高质量融合发展,对新时代提升旅游业发展效率、推动文化供给侧结构性改革、改善文化产业内生增长动力不足等意义重大。以湖北省为研究靶向,构建文化产业和旅游产业两大指标体系,选取2010—2021年相关指标数据,利用熵值法确定指标权重,计算综合发展效益值,借助耦合度与耦合协调度模型,测度文旅产业融合发展耦合度和耦合协调度,并分析12年来的时空演化特征。研究发现:1.研究期内,湖北省各地市州文化产业与旅游产业综合发展效益值整体呈现增长态势,且时空异质性显著,受2019年底暴发的新冠疫情的冲击,二者综合效益下滑明显;2.湖北省文化产业与旅游产业耦合效应整体处于中等水平,呈现由“低发展水平-低耦合度”向“中等发展水平-中等耦合度”再向“中高发展水平-较高耦合度”演变的趋势,疫情影响下的耦合效应呈现“中低发展水平-较高耦合度”的扭曲发展态势;3.文化产业与旅游产业耦合协调度持续增长,空间上呈中西部协调度低,东部协调度较高空间格局。研究建议:完善文旅顶层设计,加强政府高位引导;重视专业人才培养,强化产业队伍建设;塑造文旅产业品牌,助推产业集群形成;丰富产业科技内涵,提高文旅融合深度。

摘要：Traditional materials discovery is in ‘trial-and-error’ mode, leading to the issues of low-efficiency, high-cost, and unsustainability in materials design. Meanwhile, numerous experimental and computational trials accumulate enormous quantities of data with multi-dimensionality and complexity, which might bury critical ‘structure–properties’ rules yet unfortunately not well explored. Machine learning(ML), as a burgeoning approach in materials science, may dig out the hidden structure–properties relationship from materials bigdata, therefore, has recently garnered much attention in materials science. In this review, we try to shortly summarize recent research progress in this field, following the ML paradigm:(i) data acquisition →(ii) feature engineering →(iii) algorithm →(iv) ML model →(v) model evaluation →(vi) application. In section of application, we summarize recent work by following the ‘material science tetrahedron’:(i) structure and composition →(ii) property →(iii) synthesis →(iv) characterization, in order to reveal the quantitative structure–property relationship and provide inverse design countermeasures. In addition, the concurrent challenges encompassing data quality and quantity, model interpretability and generalizability, have also been discussed. This review intends to provide a preliminary overview of ML from basic algorithms to applications.