The computer — a new tool for visual art

The article points out some new possibilities for using computers as an instrument for visual art, especially stressing the mathematical method of picture synthesis. It is illustrated with results of recent computer art by Herbert W. Franke and Horst Helbig.     

Bubble nucleation and growth in fluids

The nucleation and growth of CO₂ bubbles in non-Newtonian and Newtonian fluids that were initially supersaturated under different pressures are investigated in the present work. Quantitative information by means of two cameras reveals that at an immobile nucleation site the bubble grows rapidly followed by a linear increase in bubble diameter with time. After reaching a critical size, the bubble detaches from the stagnant site to rise in liquids with an exponential temporary increase for both the diameter and distance. A simple physical reasoning was proposed to qualitatively explain these observed phenomena. Recently, the growth rate and flow fields around a CO₂ micro-bubble were measured in a microdevice by a micro-Particle Image Velocimetry in water. This information at microscale gives new insight into the complex mechanism of bubble nucleation and growth in fluids and could help to develop a rigorous theoretical modelling and numerical simulation such as the Lattice Boltzmann approach.     

基于三角网格和模糊聚类的海洋牧场温度可视化

为了海洋牧场研究人员能直观地了解海水温度变化情况,对海洋牧场温度可视化进行了研究。在分析海洋牧场温度分布特点的基础上,提出用模糊聚类找到等温数据集,用Delaunay三角网构建技术生成海水等温面,用OpenGL图形接口绘制等温面的方法进行海洋牧场温度可视化。实验证明该方法运行速度快且无空洞现象发生。     

敏捷BPM的可视化流程模型研究与实现

为满足用户自定义流程的服务需求,实现敏捷BPM的业务驱动,提出一种面向用户操作的可视化流程模型。该模型采用BPM与SOA组合作为系统底层架构,并利用数据库建模进行节点编排与逻辑控制。在此基础之上,引入TWaver Flex+JSON+J2EE技术,将JSON作为数据传输格式,通过Java对象的后台处理以及Flex界面的自动布局,完成模型的图形化交互。以此构建的BPM系统,用户深度参与、动态协同,实现了流程的灵活定制与管理。河北某矿业集团的应用证实了系统的实用性和敏捷性。     

Visualisation and animation in a CAL package: anchors or misconceptions?

Abstract Various studies have shown that visualisation and animation in CAL packages offer students with effective 'conceptual anchors' to hook their thinking onto. This paper examines the role of these visual representations of a CAL package in an economics course, and argues for the design and organisation of instructional activities to exploit the cognitive opportunities and address the limitations of these representations. In other words, a holistic approach to visualisation and animation is required to serve as conceptual anchors rather than sources of misconceptions.     

Drying air-induced disturbances in multi-layer coating systems

A range of new experimental techniques is developed to quantify drying-air induced disturbances on low viscosity single and multi-layer coating systems. Experiments on prototype slide-bead coating systems show that the surface disturbances take the form of a wavelike pattern and quantify precisely how its amplitude increases rapidly with wet thickness and decreases with viscosity. Heat transfer measurements show that the redistribution of water to form an additional lower viscosity carrier layer while increasing the solids concentration of the upper layer or layers enables the maximum drying rate, for which drying-air induced surface disturbances are acceptably small, to be increased with significant commercial benefits.     

Using sonification

The idea behind sonification is that synthetic non-verbal sounds can represent numerical data and provide support for information processing activities of many different kinds. This article describes some of the ways that sonification has been used in assistive technologies, remote collaboration, engineering analyses, scientific visualisations, emergency services and aircraft cockpits. Approaches for designing sonifications are surveyed, and issues raised by the existing approaches and applications are outlined. Relations are drawn to other areas of knowledge where similar issues have also arisen, such as human-computer interaction, scientific visualisation, and computer music. At the end is a list of resources that will help you delve further into the topic.