露天矿火区治理实践

火区对矿井安全生产构成严重威胁,并且使大量煤炭资源燃烧和呆滞,污染环境。以碾坊塔纳林沟煤矿火区的治理为例,说明了火区的划分、灭火方法的选择及工程量的计算,为消除露天矿火区安全生产隐患、解放呆滞煤量、保护环境、促进经济发展,提供了科学依据。     

Commissioning of a high-resolution collinear laser spectroscopy apparatus with a laser ablation ion source

Collinear laser spectroscopy is a powerful tool for studying the nuclear spins,electromagnetic moments,and charge radii of exotic nuclei.To study the nuclear properties of unstable nuclei at the Beijing Radioactive Ion-beam Facility （BRIF） and the future High Intensity Heavy-ion Accelerator Facility （HIAF）,we developed a collinear laser spectroscopy apparatus integrated with an offline laser ablation ion source and a laser system.The overall performance of this state-of-the-art technique was eva...     

一个视网膜血管肿瘤数学模型整体解的存在唯一性

研究了一个视网膜血管肿瘤的数学模型．该模型是肿瘤生长的固定边界问题,包含了反应扩散方程和常微分方程．文中先对模型进行分类讨论,然后通过运用Banach不动点定理,抛物方程的L^p估计,证明了模型在特定情况下局部解的存在唯一性.最后利用延拓的方法得到了模型在特定情况下整体解的存在唯一性．     

煤巷快速掘进支护一体化施工技术研究

面对薄煤层情况下的采掘接替困难的现象,主张加强机械化成巷技术研究。对此,以石圪台煤矿22上206工作面煤巷掘进与施工为研究对象,首先对连采机在22上煤层的应用可行性进行论证,其次依托数值模拟工具FLAC3D对连续采煤机在煤巷掘进中最佳的空顶距离进行多因素分析,最终对数值模拟所得出的支护设计参数进行实践验证。研究结果表明：22上206工作面采用连采机进行回采巷道掘进更易发挥设备台效,当连续采煤机与锚杆机进行间隔交叉作业时,8 m的煤巷空顶距离更易保证掘进效率。现场实测也表明：在巷道顶板安装5根锚杆和2根锚索的时巷道顶板下沉得到控制（顶板下沉约25 mm）。     

Color Image Super-Resolution and Enhancement with Inter-Channel Details at Trivial Cost

Image super-resolution is essential for a variety of applications such as medical imaging, surveillance imaging, and satellite imaging, among others. Traditionally, the most popular color image super-resolution is performed in each color channel independently. In this paper, we show that the super-resolution quality can be further enhanced by exploiting the cross-channel correlation. Inspired by the High-Quality Linear Interpolation (HQLI) demosaicking algorithm by Malvar et al., we design an image super-resolution scheme that integrates intra-channel interpolation with cross-channel details by isotropic linear combinations. Despite its simplicity, our super-resolution method achieves the accuracy comparable with the existing fastest state-of-the-art super-resolution algorithm at 20 times faster speed. It is well applicable to applications that adopt traditional interpolations, for improved visual quality at trivial computation cost. Our comparative study verifies the effectiveness and efficiency of the proposed super-resolution algorithm.

     

柔性加工设备中XY轴快速定位系统的应用研究

提出一种以ARM微控制器S3C44B0X为核心控制器,配合专用DSP运动控制芯片MCX314AS,及复杂可编程逻辑器件(CPLD)EPM3064相结合的高速插补定位运动控制器方案.同时阐述了该运动控制器在高速数控板材柔性加工设备中的应用.该控制系统具有高速度、高精度、高可靠性等特点;在运动控制,数控机床等需要高精度、高速度的控制领域有着很高的使用价值.     

Control and data acquisition system for collinear laser spectroscopy experiments

<正>A control and data acquisition system was implemented for the recently developed collinear laser spectroscopy setup.This system is dedicated to data recording,storage,processing,monitoring of the beam intensity and energy,and visualization of various spectra.In comparison to the conventional resonance nuclear reaction system,the key technique is the precise synchronization of the detected counts with the actual scanning voltage (or probing laser frequency).The functions of the system we...