机群全局资源管理的SSI研究

机群的主要系统资源是处理器、内存和磁盘,为实现全局资源管理的单一系统映像,文中介绍了与之有关的关键技术:分布式存储器管理、全局磁盘管理和全局处理器管理。为实现上述功能,文中提出了采用容器技术来实现分布资源管理的策略,此技术已在Linux操作系统的内核层中实现。     

巧用容器控件制作个性化菜单

应用程序的质量一定程度上取决于菜单系统。VFP菜单系统一般通过菜单设计器来完成,但界面单一,缺乏个性,而且受到Windows桌面属性的直接影响。利用容器控件和标签(或图像)控件可以实现个性化菜单的制作。     

Load scheduling for multiple quay cranes in port container terminals

This paper proposes a method to schedule loading operations when multiple yard cranes are operating in the same block. The loading scheduling methods in this paper are based on a genetic algorithm and a simulated annealing method, which consider interferences between adjacent yard cranes. It attempts to minimize the make-span of the yard crane operation. We consider the container handling time, the yard crane travel time, and the waiting time of each yard crane, when evaluating the makespan of the loading operation by yard cranes. An encoding method considering the special properties of the optimal solution of the problem is suggested. Numerical experiment was conducted to compare performances of the algorithms suggested in this study. Received: June 2005 / Accepted: December 2005     

集装箱装卸设备的现状和发展趋势

以水运集装箱为重点, 综述了集装箱装卸设备的国内外现状和发展趋势, 并提出了发展我国集装箱运输及装卸设备的对策。     

无承台高强预应力管桩在罐基础中的应用研究

通过无承台高强预应力管桩在储罐基础工程中的应用研究实例,在技术上取得了有价值的数据和资料,为今后在同类条件下用无承台高强预应力管桩作为储罐基础提供了成功的经验。     

Evaluation of the floaterm concept at marine container terminals via simulation

International seaborne trade rose significantly during the past decades. This created the need to increase capacity of existing marine container terminals to meet the growing demand. The major objective of this paper is to evaluate the floaterm concept using simulation modeling and determine if it can improve terminal productivity. The main difference between floaterm and conventional marine container terminals is that, in the former case, transshipment containers are handled by off-shore quay cranes and stored on container barges. Two terminal configurations performance is compared (vessel handling times and equipment utilization) under normal and disruptive conditions. Computational experiments confirm preliminary expectations that the floaterm concept can enhance efficiency of marine container terminal operations under normal and disruptive conditions.     

Beverage perception and consumption: The influence of the container on the perception of the contents

Drinking, unlike eating, always involves direct contact with the container in which a drink happens to be held. In our everyday lives, we typically consume beverages from glasses, cups, mugs, cans, bottles, and via straws. In this article, we consider the impact that the physical and sensory properties of a drink’s container can have on people’s perception of the contents. We investigate what happens to the perception of a beverage when the appropriateness of the container (to the contents) is varied. Furthermore, we also review the latest evidence showing that people’s consumption behaviours can be influenced by the shape of the cup or glass. The vessel in which a drink is consumed has been shown to affect everything from a consumer’s hedonic response to the beverage through to how refreshing they find it. Taken together, then, the available evidence currently supports the view that the vessels from which we drink exert a far greater influence over our perception of the sensory and hedonic qualities of the contents, and on our consumption behaviours, than is often realized. Finally, some of the current marketing opportunities in the area of branded and sensorially enhanced glassware are highlighted.     

浅谈低压容器及管道的快速堵漏方法

结合生产实践，总结了真空制盐企业正常生产中突发泄露事故的几种简易、高效、安全、快速堵漏方法。     

An Integrated Quay Crane Assignment and Scheduling Problem

As maritime container transport is developing rapidly, the need arises for efficient operations at container terminals. One of the most important determinants of container handling efficiency is the productivity of quay cranes, which are responsible for unloading and loading operations for container vessels. For this reason, the Quay Crane Assignment Problem (QCAP) and the Quay Crane Scheduling Problem (QCSP) have received increasing attention in the literature and the present paper deals with the integration of these interrelated problems. A formulation is developed for the Quay Crane Assignment and Scheduling Problem (QCASP), which accounts for crane positioning conditions and a Genetic Algorithm (GA) is developed to solve the QCASP. Both the model formulation and the solution methodology are presented in detail and computational analysis is conducted in order to evaluate the performance of the proposed GA. The results obtained from the GA are compared with the results from an exact technique, thus providing complete information about the performance of the heuristic in terms of solution quality.     

高速PCR之典范SpeedCycler2

本文介绍了德国耶拿分析仪器股份公司生产的高速PCR的SpeedCycler2的性能特点和应用。重点介绍了如何通过提高PCR升降温速度,提高模块温度与样品溶液温度一致性,来极大地降低每个PCR循环的时间,从而达到提高整个PCR反应速度的目的。指出了高速PCR提高PCR产物的特异性的可能性。同时也列举了高速PCR在人类基因组学,长片段DNA植物基因组学,及在法庭科学等方面应用,指出了高速PCR技术为各项基因研究可能带来的新的进步