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。     

590MPa级冷轧双相钢组织与性能研究

实验室进行了590 MPa级冷轧双相钢研制,研究了化学成分、轧制工艺和连续退火工艺,进行了力学性能测定和显微组织分析,结合试验结果分析了平整延伸率对钢带力学性能的影响。结果表明,试制的冷轧双相钢经820℃保温,缓冷至680℃,以> 30℃/s速率冷却至270℃进行过时效处理,平整延伸率为0.8%,得到力学性能优良的冷轧双相钢,试验钢屈服强度、抗拉强度、伸长率分别为376 MPa、652 MPa、1%。     

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。     

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。     

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.     

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。     

Optimization of a roller levelling process for Al7001T9 pipes with finite element analysis and Taguchi method

This paper is concerned with the optimization of process parameters for a roller leveller that is an indispensable piece of equipment to eliminate the undesirable curvature of a thin-walled aluminum pipe. Optimization of process parameters has been carried out for a multi-staggered-type 14-roller leveller. A finite element model of a multi-staggered 14-roller leveller was constructed for numerical analysis. The analysis is carried out with the fractional model and the Taguchi method for evaluation of the effect of process parameters such as the intermesh and the slanted angle of rollers. The response variable is set to the plastic strain along the pipe length. The optimum combination of process parameters is determined from the numerical result and confirmed by experiments. The comparison of the numerical result with the experimental one shows good coincidence for its validity and reliability.     

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.     

建筑物计算机辅助调平系统

采用带位移传感器的液压顶升器、压力传感器、多路数据采集器和微型计算机组成的测量调整系统，用于采动区倾斜建筑物的调平与校正，实现建筑物的计算机辅助调平，通过调平过程的位移和压力的实时测量与处理，为调平提供必要信息，指导调平操作，达到协调调整。