企业销售系统中水晶报表的web实现

该文中介绍了水晶报表及功能,并且简要地分析了水晶报表访问数据库的两种模式,以及水晶报表所需要的Web应用组件。重点介绍了企业销售系统报表的Web实现过程。通过对水晶报表的Web实现原理和方法介绍,以及服务器的安装配置过程的描述,一直到水晶报表在企业系统Web页面上最终实现的效果,完整地介绍了企业销售系统水晶报表的Web实现过程。     

参数化水晶报表的Web实现

介绍了水晶报表的特点以及参数化水晶报表的Web实现原理和方法,并给出了一个用ASP开发的参数化水晶报表的Web实现实例.     

水晶报表数据来源之.NET对象应用技巧

水晶报表数据来源可以选择已存在的.NET对象。当聚合函数出现在水晶报表的数据来源时水晶报表的创建与应用跟其他数据源存在一些差别且有其技巧。基于C#通过选择已存在的.NET对象-类做为水晶报表的数据源,实现了将聚合函数正确运用水晶报表的显示,案例实验证明此方法既简单又高效。     

水晶报表在点菜系统中的应用

水晶报表是具有强大的报表设计功能的设计工具,该文重点介绍了基于.NET的点菜管理系统中使用水晶报表组件完成就餐结账打印就餐小票的报表设计的实现方法,从而提高餐厅服务和管理水平。     

.NET平台下水晶报表的嵌套应用和身份验证

复杂嵌套报表的打印输出是企业信息系统开发所面临的难题之一,提出了一种在.NET平台下,利用水晶报表解决复杂嵌套报表打印输出的方法和实现过程,并通过在程序中写入用户口令,以克服传统水晶报表程序在每次连接数据库期间都要对用户身份进行验证,从而降低了报表输出速度的问题,解决了报表输出时用户身份认证的要求,为水晶报表的广泛应用提供了有效的手段。     

浅谈ASP.NET下水晶报表的实现

该文对ASP.NET下水晶报表的执行模式进行了总结,并重点针对ASP.NET下更为常用的推(PUSH)模式.分别采用TableAdapter和DataTable两种不同的方法填充中间结果集,继而实现水晶报表,给出了具体的实现代码.     

Crystal Report在VB报表设计中的应用技巧

该文介绍了在水晶报表在Visual Basic 6.0中应用,给出水晶报表在VB程序设计中的编程步骤,介绍了子报表在报表设计中的应用,给出了报表设计中自动补空行的方法,并给出了公式字段和参数字段的使用技巧。文中以不同报表实例详细介绍了水晶报表在VB报表设计中的应用技巧。     

Crystal Report在VB报表设计中的应用技巧

该文介绍了在水晶报表在Visual Basic6．0中应用,给出水晶报表在VB程序设计中的编程步骤,介绍了子报表在报袁设计中的应用．给出了报表设计中自动补空行的方法,并给出了公式字段和参数字段的使用技巧。文中以不同报表实例详细介绍了水晶报表在VB报表设计中的应用技巧。     

基于Web的MIS开发中动态报表的实现

计算机应用软件中一个重要的环节就是输出,而输出中各种复杂的报表又是最重要的.对ASP.NET Web应用程序中的动态报表进行了深入研究,提出了一种动态Web水晶报表模型.通过使用Crystal Reports引擎和ADO.NET对报表的底层接口进行控制,在SQL Server混合认证的安全模式下实现了动态Web报表,完全实现了对报表的自定义,解决了Web应用程序中自定义报表的实现问题.     

基于Web的MIS开发中动态报表的实现

计算机应用软件中一个重要的环节就是输出,而输出中各种复杂的报表又是最重要的。对ASP.NET Web应用程序中的动态报表进行了深入研究,提出了一种动态Web水晶报表模型。通过使用Crystal Reports引擎和ADO.NET对报表的底层接口进行控制,在SQL Server混合认证的安全模式下实现了动态Web报表,完全实现了对报表的自定义,解决了Web应用程序中自定义报表的实现问题。     

精密石英谐振式位移传感器

提出了用石英晶体谐振器构成的超精密位移或压力传感器的原理．由于石英晶体振荡器有超常的精度和稳定性，因而组成的位移或压力传感器也具有极高的精度和线性。还引入双晶振的差频原理，既消除了温度影响，又提高了频率变化范围，提高了测量分辨率。     

Non‐polar‐oriented InGaN light‐emitting diodes for liquid‐crystal‐display backlighting

Abstract— This article addresses spontaneously polarized light emission from GaN‐based light‐emitting diodes (LEDs) fabricated on electrically non‐polar crystallographic orientations and application of spontaneously polarized emission for backlighting of liquid‐crystal displays (LCDs). The first half of the article describes polarized light emission from GaN‐based LEDs and its role in solid‐state lighting technology. The second half reports on our experimental work to explore the potential of non‐polar LEDs for LCD backlighting applications. Optical transmission of non‐polar LED emission was characterized through a liquid‐crystal layer. Extinction ratios of 0.21 were measured between zero and an applied bias voltage to the liquid‐crystal cells. These extinction ratios are not particularly high yet; nevertheless, the experiment has demonstrated the potential of such non‐polar LEDs for LCD backlighting.     

涂敷脲醛树脂的石英晶体微天平湿度传感器

在碱性条件下预先合成脲醛树脂单体,然后在酸性条件下于石英晶体的电极上原位合成脲醛树脂高分子薄膜,制备了石英晶体微天平湿度传感器。同时考察敏感膜厚度对检测灵敏度的影响以及传感器的响应特性、重复性和稳定性。试验结果表明:涂敷脲醛树脂薄膜的传感器频率随测试的相对湿度变化明显,传感器具有良好的重复性和稳定性。制作的湿度传感器可应用于实际的生产、生活中。     

基于Web的报表打印方法

介绍了两种基于Web的报表打印方法：在ASP或者ASENET中调用EXCEL的打印方法和使用水晶报表(Crystal Reports)实现打印。详细描述了这两种方法的实现过程，指出了方法中存在的问题，并提出了解决方案。这两种打印方法在开发基于Web的应用程序中得到了广泛的应用，验证了其有效性和可靠性。     

A combined QM and MM investigation into guanine quadruplexes

This paper reports on the application of quantum mechanical (QM) energy calculations, QM optimisations and MD simulations to explore the stability of a human telomeric guanine quadruplex, containing potassium and sodium cations. G-quadruplexes are of great biological interest as it has been suggested that they offer a novel path to cancer inhibition. By understanding the stability and geometry of these DNA features gives us the ability to design ligands which can bind and stabilise the G-quadruplex. There are significant structural differences between the potassium containing crystal structure of human telomeric G-quadruplex and the sodium containing NMR structure; in this paper, we investigate the energetics and dynamics of the potassium derived crystal structure and a model for the sodium containing structure. QM investigations upon the 12 G-quadruplex core, extracted from the human potassium quadruplex crystal structure, indicate that replacement of the potassium cations with sodium yields an energetically more favourable structure. However, attempts to geometry optimise both structures at the QM level proved unsuccessful, the structure of the partially optimised potassium containing G-quadruplex retains significant structural integrity with respect to the original crystal structure, whilst the sodium containing G-quadruplex shows significant structural distortion. QM investigation of the 12 G-quadruplex core containing no cations unsurprisingly yields a highly unfavourable energetic structure. MD simulations on the complete quadruplex structure, containing potassium cations, yields a remarkably stable structure after 4ns of simulation, the most significant deviation from the original crystal structure being the loss of the capping potassium cation from the structure. MD simulation of the sodium containing quadruplex for 4ns show significant structural reorganisation compared with the original potassium containing crystal structure.     

Piezoelectric Al/sub 0.3/Ga/sub 0.7/As longitudinal mode bar resonators

This paper reports the modeling, fabrication, and experimental characterization of piezoelectric longitudinal mode bar resonators based on thin film single crystal Al/sub 0.3/Ga/sub 0.7/ As. Fabricated resonators with lengths ranging from 1000 /spl mu/m to 100 /spl mu/m have been characterized for operation in their first five odd longitudinal modes. Resonance frequencies range from 2.5 to 75 MHz, with quality factors up to 25 390 at 21.8 MHz in vacuum. Power handling capacity as high as -2.6 dBm is demonstrated at 18.8 MHz. Motional resistance and temperature stability of the resonators are also evaluated.     

High-Q single crystal silicon HARPSS capacitive beam resonators with self-aligned sub-100-nm transduction gaps

This paper reports on the fabrication and characterization of high-quality factor (Q) single crystal silicon (SCS) in-plane capacitive beam resonators with sub-100 nm to submicron transduction gaps using the HARPSS process. The resonating element is made of single crystal silicon while the drive and sense electrodes are made of trench-refilled polysilicon, yielding an all-silicon capacitive microresonator. The fabricated SCS resonators are 20-40 /spl mu/m thick and have self-aligned capacitive gaps. Vertical gaps as small as 80 nm in between 20 /spl mu/m thick silicon structures have been demonstrated in this work. A large number of clamped-free and clamped-clamped beam resonators were fabricated. Quality factors as high as 177000 for a 19 kHz clamped-free beam and 74000 for an 80 kHz clamped-clamped beam were measured under 1 mtorr vacuum. Clamped-clamped beam resonators were operated at their higher resonance modes (up to the fifth mode); a resonance frequency of 12 MHz was observed for the fifth mode of a clamped-clamped beam with the fundamental mode frequency of 0.91 MHz. Electrostatic tuning characteristics of the resonators have been measured and compared to the theoretical values. The measured Q values of the clamped-clamped beam resonators are within 20% of the fundamental thermoelastic damping limits (Q/sub TED/) obtained from finite element analysis.     

Single mask fabrication process for movable MEMS devices

The current work reports on the realization of movable micromachining devices using self-aligned single-mask fabrication process. Only dry etching process utilizing inductively coupled plasma reactive ion etching was used to release 3D micro structures from single crystal silicon substrate. No wet etching process is required to release the structures as is the case with silicon on insulator (SOI) wafers. Also the developed process does not require an SOI substrate and accordingly dispensing with the application of a wet etching step, thus yielding uniform structures without stiction. The optimized process was applied to realize thermally actuated microgrippers. The article presents the development of the fabrication process and demonstrates the operation of the fabricated device. The optimized process provides an avenue for low cost fabrication of movable micromachining devices without the use of complicated wet etching steps typically associated with SOI substrates.