Relevance feature mapping for content-based multimedia information retrieval

This paper presents a novel ranking framework for content-based multimedia information retrieval (CBMIR). The framework introduces relevance features and a new ranking scheme. Each relevance feature measures the relevance of an instance with respect to a profile of the targeted multimedia database. We show that the task of CBMIR can be done more effectively using the relevance features than the original features. Furthermore, additional performance gain is achieved by incorporating our new ranking scheme which modifies instance rankings based on the weighted average of relevance feature values. Experiments on image and music databases validate the efficacy and efficiency of the proposed framework.     

Wafer-level multilayer integration of RF passives with thick BCB/metal interlayer connection in silicon-based SiP

This paper presents an integration technology for RF passives using benzocyclobutene (BCB)/metal multilayer interconnection for system-in-package applications. This technology has been specially developed for RF subsystem packages in which a thick polymer, BCB (more than 15 μm thick), is adopted as dielectric with lossy silicon as substrate for its excellent characteristics. Both dry-etch BCB and photosensitive BCB are applied in this work, and their processes are briefly introduced and compared. An RF power divider, an MIM capacitor, different types of RF inductors as well as a coupled microstrip based band-pass filter are fabricated and measured at wafer level. The results show good electrical performances, and accordingly the passives are well applicable in RF band. Moreover, the subsystem models including monolithic chips connected with passives are presented.     

模拟抗原（Ac-NK16-Ahx-3）免疫反应抗体ELISA检测方法研究

为满足实验室单克隆抗体的制备研究,本实验特对实验室常用的制备单抗的模拟抗原（Ac-NK16-Ahx-3）进行ELISA间接法检测,进而建立一种高效的检测方法。通过对不同稀释度待测抗体的免疫吸附测定,检测出它的最终灵敏度为0.078mg/mL,最佳二抗稀释倍数为300倍,其最佳拟合曲线为y=-0.0732x＋0.6875,R2=0.8619。并且,通过统计学方法进行统计分析,确定出各实验组的相关性及变异系数,从而排除实验中的操作误差,最终可确定最佳的实验条件,并保证实验的准确性。     

基于WEB 模式的存储统计监控系统

借助WEB数据库应用技术,也即LAMP(linux、apache、mysql、php)技术构建了具有安全认证功能的统一的存储信息管理平台,在此平台上,通过shell编程实现了用户数据按照时间节点的统计,通过php编程和apache实现了统计信息的发布、更新,通过mysql数据库技术实现了用户过往数据的管理。此外,通过SNMP协议和MIB获取存储设备状态,并通过php编程实现状态信息的发布、更新。     

基于TMS320VC5402供水管道漏水检测仪设计

针对当前国内供水管道听音检漏方法可靠性低、抗干扰性差等特点,本文根据供水管道泄漏声信号的频率分布特点及互相关检测法,设计基于TMS320VC5402的漏水检测仪。该仪器采用改进周期图法对管道振动信号进行功率谱估计来判断管道是否存在泄漏。在对漏水点定位时,使用两台漏水检测仪同时采集管道泄漏声信号并用互相关算法计算漏水点的位置。文中给出漏水检测仪的硬件设计框图和软件流程图。整个系统由DSP最小系统、数据采集模块、无线通信模块以及单片机人机接口模块构成。实验结果表明,该仪器具有较好的检漏能力且定位误差在半米以内。     

In-situ composition and luminescence of rare earth coordination polymers/silica/PEG hybrid materials

A two-step sol-gel method was developed with hydrochloride as an acid catalyst for the hydrolysis process and hexamethylenetetramine as base catalyst for the synthesis of terbium and europium coordination polymers with picotinic acid. Luminescent europium and terbium coordination polymers with picotinic acid were incorporated in silica gel/polymer hybrid matrix. In the range of concentration of luminescent species (0.1, 0.3, 0.5, 1.0, and 2.0 wt %), emission intensity increases with the increase of composition concentration, and no concentration quenching takes place. The text was submitted by the authors in English.     

100吨电炉自动控制系统设计及改进

本文介绍了安钢100吨电炉两级自动控制系统的设计方案，详细阐述了一级、二级自动控制系统的配置和功能，对于系统运行中出现的问题，提出了改进方案。     

武钢二炼钢厂炉机匹配系统算法研究

武钢集团第二炼钢厂的炉机匹配系统可简化为两道工序的车间作业排程问题。其问题的关键在于合理调配3台转炉的工作时段以满足4台铸机的不间断运转。本文提出了一种快速有效的算法——压缩-扩张算法，为整个系统的最后实现，提供了最关键的支持。     

Preparation and characterization of Ni/Co bimetallic nano-clusters

Ni/Co bimetallic nano-cluters have been prepared from the aqueous solution by reducing their corresponding metal salts under suitable conditions. The experimental conditions including the type and concentration of protective agent, feeding order and the pH of the solution that influence the average particle size have been studied in detail. Transmission electron microscopy (TEM) indicates that the shape of those bimetallic nano-cluster particles is spheroid. The alloy structure has been shown by X-ray powder diffraction (XRD). The X-ray photoelectron spectroscopic (XPS) data have confirmed that the nickel and cobalt in the bimetallic nano-clusters are in the zero-valence state.