Design and Implementation of Intelligent Surveillance System for Jinjiang Tax Office Building

作为一门交叉性学科，智能视频监控技术研究与计算机科学、计算机网络、数字信号处理、计算机视觉等众多学科相关联。运动目标的分类技术在智能视频监控技术中占有举足轻重的地位。全面理解视频中特定目标的行为，对潜伏的危险因素发出警报是智能视频监控系统的最终目标。 本课题研究开发了一套税务办公大楼的智能安全监控系统。文中首先介绍智能视频监控系统的研究目的及意义、国内外发展现状，同时总结了本文的主要研究内容。然后对本课题涉及的基本概念及相关技术进行了介绍，为后期方案制定与系统设计打下理论基础。接着对本课题要研究开发的智能视频监控系统进行了详细的需求分析，确定了本系统的建设要求、建设原则和系统功能性需求，具体...As an interlaced subject, the research of intelligent video surveillance is built on the basis of computer science, computer network techniques, digital signal processing, computer vision etc. And the classification of moving object is especially important in intelligent video surveillance.To comprehensive understand the activity of the specific objects in the video so as to detect the latent dang...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201323050

束缚和异氟烷麻醉对大鼠心率变异性及HPA轴影响的比较

目的为了观察束缚固定和异氟烷(流量:0.8 L,浓度:1.5%)麻醉状态中大鼠的心率变异性的变化;并通过比较9天每天30 min束缚干预和异氟烷麻醉对大鼠的体重、痛阈以及与HPA轴相关激素的影响,来评估长期使用异氟烷麻醉和束缚固定对大鼠应激程度的影响,选择更适宜的大鼠固定方法,为基础医学的实验方法提供重要的参考。方法 SD大鼠随机分为3组:空白组,束缚组,异氟烷麻醉组。急性实验通过记录大鼠心电图15 min,观察束缚固定和异氟烷麻醉情况下大鼠心率,心率变异性的变化。慢性实验中比较连续干预9天(30 min/d)前后3组大鼠体重、痛阈变化以及与应激状态相关激素含量的变化。结果 1)急性试验:与空白组大鼠相比,束缚干预和异氟烷麻醉均造成大鼠心率显著增加,具有统计学意义(P 0.05)。结论以上结果提示:低浓度的异氟烷造成麻醉中大鼠心率增加,心率变异性下降,产生以交感兴奋为主的自主神经功能状态改变。多次束缚固定易造成大鼠HPA轴激活,产生慢性应激的效应。在长期需要固定动物的实验中,与束缚固定相比异氟烷麻醉是更好的固定方法。国家自然科学基金(81674083

CuBr_2/Ag_2CO_3催化苄胺氧化酰胺化合成N-苄基苯甲酰胺

目的建立一种简单、有效地制备N-苄基苯甲酰胺类化合物的方法。方法以苄胺及衍生物为底物、TBHP为氧化剂、HPO(OEt)_2为添加剂,在CuBr_2/Ag_2CO_3的催化下,制备N-苄基苯甲酰胺类化合物。结果和讨论制备了一系列N-苄基苯甲酰胺类化合物,其结构经~1HNMR、~(13)CNMR和HR-MS表征。该反应具有操作简便、原料易得、条件温和等特点

The preparation of lanthanum,cerium doped TiO_2 ultrafiltration membrane

考察了镧、铈掺杂对二氧化钛(TIO2)超滤膜的影响。镧掺杂可以有效抑制TIO2晶型随烧结温度增加的急剧转变。镧、铈掺杂可以有效控制膜层的粒径和孔径,并提高其抗酸碱性能。TIO2膜层粒径为60~80nM,孔径为10~60nM,抗酸碱性能较差;而经镧、铈掺杂后的TIO2膜层粒径为50nM左右,孔径为10~20nM,抗酸碱性能较好,其中镧掺杂效果优于铈掺杂。The influences of lanthanum and cerium doping on the performance of TiO2ultrafiltration membrane were investigated.The significant TiO2crystal structure change with the increase of calcination temperature could be effectively suppressed by lanthanum doping.Lanthanum and cerium doping could not only effectively control the particle and pore sizes in membrane layer,but also improved the acid and alkali resistance.TiO2membrane layers were obtained with particle sizes of 60-80nm and bore diameters of 10-60nm.Lanthanum and cerium doping TiO2 membrane layers were obtained with particle sizes around 50nm and bore diameters of 10-20nm.In addition,the performance of lanthanum doping was better than cerium doping

The preparation and performance of alumina ultrafiltration membrane

由溶胶-凝胶法与水热法相结合,成功制备了氧化铝超滤膜。利用SEM、Xrd等表征手段,研究膜层晶型、粒子形貌、孔径大小及其分布、膜层厚度等的合理调控,并表征其通量、截留率和耐酸碱性能。结果表明,水热处理溶胶并于合适温度下烧结,可有效调控超滤膜膜层的晶型和粒子的形貌;通过分散剂PEg合适型号的选择,可有效调控膜孔孔径及其分布;合适的涂膜液浓度并适量的成膜助剂PVA,可有效调控膜层厚度并避免其开裂;当氧化铝呈α态时,超滤膜具有优秀的耐酸碱性能。Alumina ultrafiltration membrane was prepared by sol-gel hydrothermal method.SEM and XRD were employed to characterize the crystal form,particle morphology,pore size distribution and thickness of membrane layer surface so as to achieve a good control of the membrane layer characteristic.In addition,the flux, rejection,acid and alkaline resistances of the membrane were also tested.The results showed that crystal form and particles surface morphology of ultrafiltration membrane could be efficiently controlled by treatment with hydrothermal method followed by sintering at suitable temperature.Pore size and pore size distribution could be well tuned by using different types PEG as dispersant agents.The thickness and cracking of membrane layer could be efficiently controlled by changing the concentration of the coating solution and by adding suitable amount of PVA.It was found thatα-Al2 O3 ultrafiltration membrane displayed a better acid and alkaline resistance than that of transition-state

低温晶片键合的方法

一种低温晶片键合的方法，其特征在于，包括如下步骤:步骤1:将单面抛光的Si外延片和InGaAs外延片用有机溶剂清洗，去除表面的有机物，该InGaAs外延片的底层为InP衬底;步骤2:再分别对Si外延片和InGaAs外延片进行表面处理，以去除表面的杂质离子、除碳和亲水性处理;步骤3:将Si外延片和InGaAs外延片进行贴合，贴合后的晶片对置于真空键合机内键合，进行第一次热处理，以驱除键合界面的水气;步骤4:对键合后的晶片进行减薄;步骤5:再对减薄后的晶片进行第二次热处理;步骤6:最后腐蚀掉键合晶片的InP衬底，完成低温晶片键合的制作

InAs/GaAs柱形岛的制备及特性研究

利用固源分子束外延(MBE)的方法经SK模式自组装生长由多层InAs/GaAs量子点组成的柱形岛.具体分析了GaAs间隔层厚度,生长停顿时间以及InAs淀积量对发光峰波长的影响.原子力显微镜(AFM)结果显示柱形岛表面的形状和尺寸都比较均匀;室温下不同高度的柱形岛样品的发光波长分别达到1.32和1.4μm,而单层量子点的发光波长仅为1.1μm,充分说明了量子点高度对发光波长的决定性影响,这为调节量子点发光波长提供了一种直观且行之有效的方法

Artificial Bee Colony Algorithm Based on K-Means Clustering for Droplet Property Optimization

The major challenge in printable electronics fabrication is to effectively and accurately control a drop-on-demand (DoD) inkjet printhead for high printing quality. In this paper, a prediction model based on Lumped Element Modeling (LEM) is proposed to search the parameters of driving waveform for obtaining the desired droplet properties. Although the evolution algorithms are helpful to solve this problem, the classical evolution algorithms may get trapped into local optimal due to the inefficiency of local search. To overcome it, we present an improved artificial bee colony algorithm based on K-means clustering (KCABC), which enhances the population diversity by dynamically clustering and increases the convergence rates by the modification of information communication in the employed bees’ phase. Combined with KCABC, the prediction model is applied to optimize the droplet volume and velocity of nano-silver ink for high printing quality. Experimental results demonstrate the proposed prediction model with KCABC plays a good performance in terms of efficiency and accuracy of searching the appropriate combination of waveform parameters for printable electronics fabrication