相对平坦模的$\aleph$-积

设$M$是右$R$-模, $\aleph$是一个无穷基数. 称右$R$-模$N$是$\aleph$-$M$-凝聚的,如果对任意的$B/A\hookrightarrow mR$,其中设$M$是右$R$-模, $\aleph$是一个无穷基数. 称右$R$-模$N$是$\aleph$-$M$-凝聚的,如果对任意的$B/A\hookrightarrow mR$,其中设$M$是右$R$-模, $\aleph$是一个无穷基数. 称右$R$-模$N$是$\aleph$-$M$-凝聚的,如果对任意的$B/A\hookrightarrow mR$,其中设$M$是右$R$-模, $\aleph$是一个无穷基数. 称右$R$-模$N$是$\aleph$-$M$-凝聚的,如果对任意的$B/A\hookrightarrow mR$,其中$0\leq A相似文献   

一类无源OLED显示模块在嵌入式系统中的应用

介绍了OLED显示模块的特点及其在ARM核处理器S3C4510B和uClinux嵌入式操作系统下的应用。给出了系统的硬件电路设计。根据OLED模块指令集特点，在uClinux下采用对OLED模块编写用户空间设备驱动程序的方法。实现了终端对OLED的控制。实验表明，采用用户空间驱动程序可以减小操作系统开销、提高系统对外设的响应速度。     

Benzocyclobutene (BCB) dielectrics for the fabrication of high density,thin film multichip modules

A new class of organic dielectrics, benzocyclobutenes, 1, are described and their application to the fabrication of thin film multichip modules is detailed. Key properties for3, a siloxy containing BCB derivative include low dielectric constant (2.7), low loss (0.008 at 1 MHz), low water absorption (0.25% after 24 h water boil) and high degree of planarization (>90% from one layer coverage). All other properties meet the requirements necessary for fabrication of thin film MCM structures.     

外代数上复杂度为2的Koszul模

本文对外代数上复杂度为2的不可分解循环Koszul模M的极小投射分解进行了分析，构造出了基映射对应的矩阵的一种标准形式，进而刻划出了其合冲ΩM的滤链结构．     

Thermodynamic coefficients of ideal Fermi gas

We present analytical formulae for the first and second derivatives of the Helmholtz free energy of non-relativistic ideal Fermi gas. Important thermodynamic quantities such as heat capacity, sound velocity, heat capacity ratio, and others are explicitly expressed through the derivatives. We demonstrate correct ideal Boltzmann gas and low-temperature Fermi gas asymptotes and derive corrections to thermodynamic functions for these limiting cases. Numerical computations of thermodynamic properties of ideal Fermi gas can be accurately performed using the developed freely available Python module ifg .     

Acetic acid permeation through photovoltaic backsheets: Influence of the composition on the permeation rate

Acetic acid, which is formed during degradation of the most frequently used photovoltaic (PV) encapsulant ethylene vinyl acetate (EVA), is linked to several PV module failure mechanisms like corrosion of interconnectors, cells or potential induced degradation (PID). An evaluation of a new measurement technique and data analysis for acetic acid permeation through photovoltaic backsheet films is described. The influence of the layer composition of the multilayer backsheets on the acetic acid permeation rates (AATR) was determined by investigating the permeation properties of the individual layers as well as the whole polymeric multilayer composites. Various polymeric backsheet types based on PET-core layers showing a very high barrier for acetic acid permeation were compared to fully polyamide material stacks which allow for a much higher transmission of acetic acid through the backsheet out of the module. Incorporated Al-layers were found to not affect the AATRs of PET based backsheets.     

基于虚拟机的MPLS网络实验平台实现

MPLS网络软件研发过程中,采用虚拟机技术构建网络实验环境,在时间、成本和研发效率等方面都具有优越性。在VxWorks平台上实现了MPLS转发模块,采用虚拟机技术以及与实际网络设备一致的软件平台,快速有效地搭建了MPLS网络实验平台。     

中大尺寸显示背光模组的应用及其发展

背光模组是液晶显示模组的关键零部件,文章从中大尺寸背光源组的结构和实际应用两方面分析了中大尺寸背光模组的发展趋势。     

太阳光伏系统设计浅析

根据具体的工程实例阐述了太阳光伏系统的设计选型、注意事项,并对该系统进行了技术经济评价,对存在的问题作出了分析,提出了解决方法。     

1553B总线控制器双机热备份设计

1553B总线作为一种高可靠的总线技术,广泛应用运用于军事领域。由于1553B总线双冗余备份的只是总线传输通道,而总线上的控制器没有热备份,一旦总线控制器出现故障,则整个总线将瘫痪。主要论述一种利用软件实现总线控制器的双机热备份设计思想和方法,此方法易于实现,效率很高,并有效地防止了工作BC和备用BC的误切换,实践验证,这种设计切实可行,有一定的通用性。