Development of panel generation system for seakeeping analysis

In this paper, a panel generation system for analyzing seakeeping performance of a ship is developed. Given a set of offset data representing the ship hull, the system first creates a surface model of the ship. From the surface model, the wetted part of the ship is obtained by computing the intersection between the water surface and the hull, which is then processed to generate quadrilateral panels for the hull and the water surface. The system is designed to handle various kinds of ships such as ships with a mono-skeg, a twin-skeg and/or a bulbous bow in either an automatic or an interactive manner. Moreover, it can generate input panels for three different seakeeping analysis methods. Examples are provided to demonstrate the capabilities of the system.     

Front‐projection optical‐system design for reflective LCoS technology

Abstract— Optical designs for three‐panel LCoS projection systems are reviewed. The impact of polarization aberrations in prism‐based systems is discussed and a simple model to analyze the sensitivity of contrast to thermal gradients in prisms is presented. To eliminate stress birefringence in LCoS projection systems, we have developed a projection optical system that does not require the use of polarizing prisms. An improved off‐axis design has been designed that simplifies manufacture and reduces cost. The performance of systems based on this architecture will be discussed.     

基于组件的虚拟仪器控制面板的设计与实现

介绍了组件技术及虚拟仪器软件系统,讨论了虚拟仪器控制面板的一般要求,并结合实例分析了虚拟仪器控制的组件化设计及实现的方法。     

如何用Visual C++开发控制面板组件

介绍了控制面板组件的工作原理,给出了用Visual C++开发 控制面板组件的方法,实现自己正确操作系统控制面板之目的,且给出了应用实例。     

Fault‐tolerant display image‐data‐manipulation unit for system‐on‐panel

Abstract— Bit‐partitioned and conventional shifts, as well as type transformations of multimedia data, are frequently used for display image‐processing systems. A data manipulation unit with fault‐recovery capability based on redundancies is proposed for system‐on‐panel with low processing technology yield. Utilizing data manipulations that are similar to normal shift operation, a proposed data‐manipulation unit is designed with a few additional paths added to the existing barrel shifter. The design methodologies are verified with FPGA and the performance is evaluated in terms of the advantages.     

The effects of glossy screens on the acceptance of flat‐panel displays

Abstract— The TCO requirements provide well‐known and recognized quality labels for displays. For these requirements to remain useful, they must continuously be reviewed and updated when necessary. The study described here was performed in response to the market trend of designing flat‐panel displays and notebooks with glare panels. The purpose of this study was to investigate subjective responses to display screens of different gloss levels for office workers working on different tasks under normal office‐lighting conditions. The study consisted of three parts, one where the users should set an acceptable reflex level, one where the user should rate their disturbance on a category scale, and one where the visual acuity of the users were investigated whether they were affected by glare or not. The results show that increasing gloss and increasing luminance levels had negative effects on the acceptance and the disturbance of reflexes. There were statistically significant differences in the acceptance and the disturbance levels between screens with low gloss and screens with high gloss, which suggests that screens with the highest gloss levels should be avoided. The study did not show an effect on the performance based on acuity testing.     

基于PLC和组态软件的包衣系统研究

本文详细地介绍了包衣机实时控制系统设计的方法,包含软件设计和硬件电气线路的设计。实现了"所见即所得"的组态画面控制。该系统具有节能效果好、可靠性高,实现了全自动化控制等优点。     

Improvement of luminance and luminous efficacy in PDPs

Abstract— The dependence of PDP luminance and efficacy on the input power was investigated for several Xe‐Ne gas mixtures. The input power was varied in two ways: namely, by changing the dielectric‐layer capacitance (thickness) and by changing the sustain voltage. A distinctly different behavior was found; for increasing capacitance the efficacy decreases markedly, whereas for increasing sustain voltage the efficacy increases. A design window comprising the combination of a high Xe concentration and a high sustain voltage was suggested. In this window, a high luminance and a high efficacy are concurrent. A 4‐in. test panel with 10% Xe in Ne has been realized showing a white luminance of 2040 cd/m² and an efficacy of 2.3 lm/W for continuous sustaining at 50 kHz with a sustain voltage of 225 V.     

水利工程中混凝土面板堆石坝的设计措施

混凝土面板堆石坝是由防渗系统和堆石体构成的,在我国科学技术不断提高的情况下,面板堆石坝得到了空前的发展,常用于水利建设工程中,经调查发现,有很多的高坝面板结构出现了裂缝。基于此本文对水利工程混凝土面板堆石坝的设计措施进行了探讨。     

碳晶电热板采暖系统测试模拟及温控调节

为了使新型碳晶板地热电采暖系统能在民用采暖领域更广泛地应用,更好地发挥其清洁、调控方便等优点,通过实验测试和模拟研究相结合的方法,测试和模拟分析了采用碳晶电热板系统的标准实验小室的动态加热过程;并利用经实验验证的模拟模型,对北京市某房间内碳晶电热板系统24 h温控调节过程进行数值模拟,提出了合理的温控控制因素和调节方案,确定了温控装置的温度限值以实现温控过程,为该电采暖系统的节能运行,提供了技术支撑．