湘钢220KV备用电源自投方式商榷

针对湘钢三中央变电站２２０ｋＶ备用电源自投装置存在的问题，提出了新的方式和设想．分析采用新的方式后，停电时间由３．５ｓ缩短至０．０４～０．０９ｓ的可行性．同时还提出在ＳＦ６断路器的变电站，自投装置应采用的方式．     

The stable topology for residuated lattices

The spectrum of a residuated lattice L is the set Spec(L) of all prime i-filters. It is well known that Spec(L) can be endowed with the spectral topology. The main scope of this paper is to introduce and study another topology on Spec(L),?the so called stable topology, which turns out to be coarser than the spectral one. With this and in view, we introduce the notions of pure i-filter for a residuated lattice and the notion of normal residuated lattice. So, we generalize to case of residuated lattice some results relative to MV-algebras (Belluce and Sessa in Quaest Math 23:269–277, 2000; Cavaccini et?al. in Math Japonica 45(2):303–310, 1997) or BL-algebras (Eslami and Haghani in Kybernetika 45:491–506, 2009; Leustean in Central Eur J Math 1(3): 382–397, 2003; Turunen and Sessa in Mult-Valued Log 6(1–2):229–249, 2001).     

A fuzzy cerebellar model articulation controller based visual servo system for robot

This paper presents a novel online learning visual servo controller integrating the FCMAC with proportion controller for the control of position of manipulator end-effector. Since the FCMAC has good learning capability and fast learning speed, and can save much computer memory space by fuzzy processing of input space division and memory unit activation, it is used to develop an adaptive control law by learning the relationship between the image feature errors and manipulator input, and the aim of online learning of the FCMAC is to minimize the output of proportion controller. Furthermore, the FCMAC has no need for models of robot manipulator and image feature extraction, so that the capability of proposed controller for tasks under uncertain environment can be improved. Finally, the proposed controller is proved to be effective by the experiment, and compared with BP neural network.     

陶瓷隧道窑的节能监测与节能途径

窑炉节能监测是能源管理的一个重要组成部分.本文讨论了陶瓷隧道窑节能监测的意义、项目、方法和节能途径,以供参考.     

Automatic 3D Indoor Scene Updating with RGBD Cameras

Since indoor scenes are frequently changed in daily life, such as re‐layout of furniture, the 3D reconstructions for them should be flexible and easy to update. We present an automatic 3D scene update algorithm to indoor scenes by capturing scene variation with RGBD cameras. We assume an initial scene has been reconstructed in advance in manual or other semi‐automatic way before the change, and automatically update the reconstruction according to the newly captured RGBD images of the real scene update. It starts with an automatic segmentation process without manual interaction, which benefits from accurate labeling training from the initial 3D scene. After the segmentation, objects captured by RGBD camera are extracted to form a local updated scene. We formulate an optimization problem to compare to the initial scene to locate moved objects. The moved objects are then integrated with static objects in the initial scene to generate a new 3D scene. We demonstrate the efficiency and robustness of our approach by updating the 3D scene of several real‐world scenes.     

An FAR-SW based approach for webpage information extraction

Automatically identifying and extracting the target information of a webpage, especially main text, is a critical task in many web content analysis applications, such as information retrieval and automated screen reading. However, compared with typical plain texts, the structures of information on the web are extremely complex and have no single fixed template or layout. On the other hand, the amount of presentation elements on web pages, such as dynamic navigational menus, flashing logos, and a multitude of ad blocks, has increased rapidly in the past decade. In this paper, we have proposed a statistics-based approach that integrates the concept of fuzzy association rules (FAR) with that of sliding window (SW) to efficiently extract the main text content from web pages. Our approach involves two separate stages. In Stage 1, the original HTML source is pre-processed and features are extracted for every line of text; then, a supervised learning is performed to detect fuzzy association rules in training web pages. In Stage 2, necessary HTML source preprocessing and text line feature extraction are conducted the same way as that of Stage 1, after which each text line is tested whether it belongs to the main text by extracted fuzzy association rules. Next, a sliding window is applied to segment the web page into several potential topical blocks. Finally, a simple selection algorithm is utilized to select those important blocks that are then united as the detected topical region (main texts). Experimental results on real world data show that the efficiency and accuracy of our approach are better than existing Document Object Model (DOM)-based and Vision-based approaches.     

MS-DOC文件文本提取研究

关键词搜索广泛应用于情报分析、搜索引擎和计算机取证,对MS DOC文件进行关键词搜索可能漏判,明明存在的关键词却找不到。微软复合文档结构由一系列流组成,流以扇区为单位存储,通过目录结构和扇区分配表对流及其存储空间进行管理。MS DOC文件中的文本存储在WordDocument流中,文本存储不一定连续,通过Table流记录分块情况。关键词可能跨越不相邻扇区,即使在相邻扇区,一个关键词可能一部分是压缩存储,另一部分是非压缩存储,这些都是关键词搜索漏判的原因。根据Table流中的分块信息提取WordDocument流中的文本,并统一编码格式,进而进行关键词搜索,就可以避免漏判。     

结合因式分解与布尔表达式图的可逆电路综合方法

为降低由布尔表达式图(BED)综合所得可逆电路的成本,提出一种将因式分解与BED表示模型相结合的可逆电路综合方法.给定布尔函数的积之异或和(ESOP)覆盖,首先由ESOP立方体的共享零抑制多输出决策图表示借助代数除法对立方体实施因式分解,并在此基础上构建BED;然后将BED结点映射为可逆门级联.对基准函数的可逆电路综合结果表明,该方法具有较高的时间效率.与现有将有向无环图作为函数表示模型的综合方法相比,该方法在许多情况下能降低综合所得可逆电路的量子成本和量子位数.从平均角度看,与结合变量分组和BED表示模型的综合方法相比,该方法可将量子成本和量子位数分别降低5.01％和5.47％.     

中缅天然气管线沿线滑坡变形监测与机理分析——以黔西南州沙子镇滑坡为例

中缅天然气管线黔西晴隆段沙子镇2016年和2017年连续2次因滑坡引发天然气管线破裂事件,引起了人们的极大关注。滑坡的变形机制和监测对该区的天然气管线的正常运营具有非常重要的意义。在研究区域构造背景的基础上,根据该区地质、构造特征和现场收集的滑坡变形资料及监测数据,开展了该区段变形机制的研究和变形监测分析。研究结果表明:滑坡变形主要划分为管线正常运行阶段的坡体未变形、缓慢蠕滑变形、加速蠕滑变形和管线破裂变形4个阶段。滑坡主要是由于人工堆填土方所引起的蠕滑变形所致。监测数据表明:通过抗滑处理后,坡体的变形得到了有效控制,天然气管线运行较为安全,但仍需要进一步的监测和预报。     

斗轮机行走装置履带结的失效分析

履带结是露天煤矿中广泛采用的斗轮式采煤机上的重要零件，其运行中的失效会带来灾难性的安全事故。在分析履带结失效原因的基础上，参考有关资料，研制新的钢种。用新钢种制造的履带结在煤矿中运行正常，说明失效分析工作和新钢种的研发是成功的。