A Lattice Approach to Image Segmentation

After a formal definition of segmentation as the largest partition of the space according to a criterion σ and a function f, the notion of a morphological connection is reminded. It is used as an input to a central theorem of the paper (Theorem 8), that identifies segmentation with the connections that are based on connective criteria. Just as connections, the segmentations can then be regrouped by suprema and infima. The generality of the theorem makes it valid for functions from any space to any other one. Two propositions make precise the AND and OR combinations of connective criteria. The soundness of the approach is demonstrated by listing a series of segmentation techniques. One considers first the cases when the segmentation under study does not involve initial seeds. Various modes of regularity are discussed, which all derive from Lipschitz functions. A second category of examples involves the presence of seeds around which the partition of the space is organized. An overall proposition shows that these examples are a matter for the central theorem. Watershed and jump connection based segmentations illustrate this type of situation. The third and last category of examples deals with cases when the segmentation occurs in an indirect space, such as an histogram, and is then projected back on the actual space under study. The relationships between filtering and segmentation are then investigated. A theoretical chapter introduces and studies the two notions of a pulse opening and of a connected operator. The conditions under which a family of pulse openings can yield a connected filter are clarified. The ability of segmentations to generate pyramids, or hierarchies, is analyzed. A distinction is made between weak hierarchies where the partitions increase when going up in the pyramid, and the strong hierarchies where the various levels are structured as semi-groups, and particularly as granulometric semi-groups. The last section is based on one example, and goes back over the controversy about “lattice” versus “functional” optimization. The problem is now tackled via a case of colour segmentation, where the saturation serves as a cursor between luminance and hue. The emphasis is put on the difficulty of grouping the various necessary optimizations into a single one.     

铝箔纸胶粘剂的制备

由醋酸乙烯和丙烯酸酯所制得的共聚物，能够极大地提高乳液对铝箔和纸张之间的粘合力，通过调整保护胶体聚乙烯醇的用量和增塑剂邻苯二甲酸二丁酯在反应过程中的不同加入方式，可以控制和生产所需要的乳液粘度，流平剂的加入，则改良了乳液在铝箔上胶时的流平性。     

3G智能卡文件系统的研究与设计

对基于Flash的3G智能卡文件系统的研究与设计,引用了数据库日志技术和掉电保护机制,保证了智能卡文件系统可靠性,数据的一致性和完整性;按字节静态分配存储空间、合理有效地回收与重用碎片空间,提高了存储空间的利用率;平均磨损和页面映射技术的使用延长了Flash的使用寿命;有效的存储设计提高了数据检索的速度,从而提高了智能卡的整体性能。测试证实了该文件系统设计适合3G EVDO卡。     

Design and construction of a multi-sensor position monitoring system applied to key components of synchrotron sources

Abstracts High-accuracy position monitoring of key components is required for modern synchrotron sources, such as free-electron lasers and diffraction-limited storage rings. Although various position monitoring sensors have been adopted to monitor the displacement of key compo-nents in each direction in real time, these monitoring sys-tems are usually based on their own coordinate system. Data from such systems are meaningful when evaluating and examining the data from each positioning monitoring system in a unified coordinate system. This paper presents the design and construction of a multi-sensor position monitoring system (MPMS). A hydrostatic levelling sys-tem, a wire position sensor (WPS) and a tiltmeter are fixed to a stainless steel plate that has been calibrated by a coordinate-measurement machine. Several plates form the MPMS. The system must compensate for the sag of the stretched wires so that the WPSs create a straight line. The method of the coordinate transformation from the sensor coordinate system to the MPMS coordinate system was thoroughly studied. An experimental MPMS that includes five plates was setup in a 20-m tunnel, and a validation study to verify fully the feasibility of the MPMS was performed.     

Precedence relationship options for the resource levelling problem using a genetic algorithm

The resource levelling problem (RLP) arises in project scheduling where the intention is to reduce the fluctuation of the resource demand. The solutions of the RLP are achieved through the rearrangement of the project activities under a constraint of preselected precedence relationships. To relieve the constraint, a new concept of the RLP with relationship options is initiated. An activity of the project network can have one or more alternative types of relationship with other activities as appropriate. An alternative relationship provides more float time and allows new possibilities for the arrangement of efficient patterns of the project resource demand. The scheduling problem model was formulated by using mathematical equations on spreadsheet software and solved by using the genetic algorithm based optimization. The prototype was tested in two different project instances. The test results demonstrated that this new model could calculate and arrange the project schedules for all selected alternative types of relationships. The model with relationship options provided consistent results for efficient resource utilization schedules, which were better than the one without relationship options. These schedules could decrease the resource demand fluctuation and the maximum resource demand level. This new model of the RLP with relationship options not only provides the additional flexibility to level the resource demands but also determines suitable types of relationships for the project activities.     

宜昌地区目前推广应用的桩型和工艺

分析几种目前正在宜昌地区推广应用的桩型：灌注桩后压浆技术、长螺旋高压泵送混凝土成桩技术和预应力管桩,介绍桩基设计的新理念。     

一种优质涂改液的研制与开发

主要介绍一种优质涂改液的研制开发过程，讨论不同的树脂、填料、溶剂的选用对所制得的涂改液性能的影响。     

塑性强化材料矫直反弯特性研究

为了深入研究塑性强化材料在平行辊式矫直过程中一次反弯与二次反弯特性的关系,根据工程弹塑性力学的基本原理,建立基于强化弹塑性材料辊式矫直弯曲力学模型。通过解析法描述两次反弯过程中的应力关系,给出辊式矫直过程中截面弯曲过程材料残余应力分布、弯矩比、加载应力变化过程。证明两次反弯过程中经历一次反弯后,二次反弯截面弯矩比与曲率比不再是原有简单M-C关系,而是与一次弯曲曲率比、二次弯曲曲率比与强化系数相关的函数。理论上证明原有弯曲理论不再完全适用于多次连续反弯矫直过程。解析结果表明,辊式矫直过程中经历二次反弯的材料截面弹性极限弯矩值下降,矫直弯曲减小,回弹比增大。同种材料考虑强化与不考虑强化矫直后残余应力均方差分别为71.2与65.6,回弹比均值分别为0.49和0.43。     

Dielectric Drying

ABSTRACT

Dielectric heating is a term which covers both radio frequency (RF) and microwave systems. It has been used for industrial drying for many years because it has a number of advantages over other drying processes. These advantages include the volumetric dissipation of energy throughout a product, and the ability to automatically level any moisture variation within it. It is generally true to say that these techniques can only be justified in processes involving material of “high” value being processed in modest quantities but when combination with other fuel fired techniques there may be opportunities to broaden the range of applications. In addition to a desciption of current industrial applications, the theory of dielectric heating, the similarities and differences between RF and microwave are discussed together the effects of the dielectric roperties of a product on the design of the equipment     

纸张涂料的流平过程分析和影响因素

本文从流变学上分析了涂料在纸面上的流平过程，计算出流平时间。计算表明不可能达到完全流平状态，并指出影响流平性的因素及流平性能测量和评价。