在Delphi编程中利用Excel实现动态报表

Delphi作为一个RA1P工具,在界面设计和数据库编程上具有强大的功能,是开发C/S结构的MIS系统的有力工具。但是Delphi在动态报表的处理上有一定的局限,而提供灵活的报表打印是MIS系统十分重要的功能。利用Delphi中的Excel控件,使用事先制作好的Excel报表模板,将数据动态填入,从而实现复杂的不规则报表。用户可以根据需要自定义模板,提高了系统的灵活性。     

面向信息系统的柔性报表系统的逻辑模型设计

针对信息系统的报表系统不能适应需求变化的问题，分析了报表系统共性和变性，提出了柔性报表系统的框架结构和层次逻辑模型，描述了柔性报表系统中数据域、信息域、映射以及与操控平台和制作平台之间的关系。柔性报表系统由报表系统操控平台和报表制作平台构成，开发人员和分析员利用操控平台设置和定制特定信息系统的报表制作平台，用户利用报表制作平台定义和生成需要的报表。     

基于web服务的报表模型研究

针对报表软件复用性差与信息系统中数据无法和其它系统交互问题,根据报表的生成流程分析出报表的共性与个性,提出了一种基于web服务的柔性报表服务模型.柔性报表服务模型由报表系统开发平台、报表模板制作平台和报表生成服务构成.开发平台用于与特定的信息系统绑定,制作平台用于制作报表模板,报表生成服务用于被其它系统调用返回需要的报表文件.最后,在.NET平台下对模型进行实现,证明模型的可用性和正确性.     

面向中小企业智能报表系统的研究与实现

为满足中小企业灵活多变的报表需求,简化报表的制作流程。文章提出了报表结构按类分解、分块存储及按需组合的方法,给出基本报表分区和报表列种类概念,详细阐述报表生成器的设计原理及关键技术,设计出报表定义及生成系统和权限管理机制。该系统可为用户提供灵活多变、快捷生成报表服务,对一般企业的报表制作具有通用性。     

IFIX中实时数据的历史报表实现

介绍了IFIX中实时数据的历史报表实现,详细说明了实现的具体方法和注意事项。     

LabVIEW中基于ActiveX的复杂Word报表定制

为了生成复杂且不规则的测试报表,比较了LabVIEW生成报表的几种方法,提出利用ActiveX自动化技术生成Word报表.通过创建"属性节点"和"调用节点"的方法,自建"光标移动文本写入"子VI函数节点,实现了在word报表中光标的灵活移动和文本、图片的随意写入.     

EKO观测数据及报表制作程序

EKO的观测数据手工计算比较繁琐,较容易出现计算错误,其报表制作同样费时费力。所以,我站独立研发了EKO数据计算与报表制作程序。     

巧用EXCEL自动填报日常报表

本文阐述了如何巧用EXCEL电子表格制作日常报表,实现报表自动填报。     

Delphi控制Excel扩展报表功能的技术实现

Excel是当前最流行的数据报表制作工具。本文介绍如何使用Delphi来控制Excel完成数据库与报表之间的数据交换,讨论了报表制作工程中的一些细节性问题。     

报表管理系统的开发与应用

人们在日常管理工作中习惯用报表进行数据管理和统计,本文说明了用电脑代替手工工作的必要性和可行性,给出了一个具体的报表管理系统,介绍了系统的结构、功能和特点,并提出了系统有待解决的问题。     

在Power Builder中结合Formula One实现复杂报表

在应用程序开发中多数时候只能实现规则的报表，在实际应用中为了突出鲜明的层次感，开发者往往需要根据不同情况实现不规则的动态报表。本文阐述了在使用PowerBuilder开发应用程序中，如何使用第三方控件Formula One来实现复杂的动态报表，从而增强PowerBuilder开发过程中报表应用的灵活性。     

Discovery of 12 satellites of Saturn exhibiting orbital clustering.

The giant planets in the Solar System each have two groups of satellites. The regular satellites move along nearly circular orbits in the planet's orbital plane, revolving about it in the same sense as the planet spins. In contrast, the so-called irregular satellites are generally smaller in size and are characterized by large orbits with significant eccentricity, inclination or both. The differences in their characteristics suggest that the regular and irregular satellites formed by different mechanisms: the regular satellites are believed to have formed in an accretion disk around the planet, like a miniature Solar System, whereas the irregulars are generally thought to be captured planetesimals. Here we report the discovery of 12 irregular satellites of Saturn, along with the determinations of their orbits. These orbits, along with the orbits of irregular satellites of Jupiter and Uranus, fall into groups on the basis of their orbital inclinations. We interpret this result as indicating that most of the irregular moons are collisional remnants of larger satellites that were fragmented after capture, rather than being captured independently.     

Non-linear dynamics of cardiac excitation and impulse propagation

Extremely complex frequency-dependent patterns of excitation and impulse propagation can be shown in cardiac tissues. Such complex behaviour can be analysed using methods derived from chaos theory, which is concerned with the non-linear dynamics of deterministic systems that have irregular periodicities as well as an exquisite sensitivity to the initial conditions. We report here that the general response patterns of non-oscillatory cardiac conducting tissues, when driven rhythmically by repetitive stimuli from their surroundings, are similar to those of other deterministic systems showing chaotic dynamics. Such patterns include phase locking, period-doubling bifurcation and irregular activity. We have used electrophysiological techniques and analytical arguments to explain this unforeseen behaviour and to provide some key information about its mechanisms. The study of these dynamics is of general application to the understanding of disordered phenomena in excitable media, and may provide new insight about the origin of fatal cardiac arrhythmias.     

An abundant population of small irregular satellites around Jupiter

Irregular satellites have eccentric orbits that can be highly inclined or even retrograde relative to the equatorial planes of their planets. These objects cannot have formed by circumplanetary accretion, unlike the regular satellites that follow uninclined, nearly circular and prograde orbits. Rather, they are probably products of early capture from heliocentric orbits. Although the capture mechanism remains uncertain, the study of irregular satellites provides a window on processes operating in the young Solar System. Families of irregular satellites recently have been discovered around Saturn (thirteen members, refs 6, 7), Uranus (six, ref. 8) and Neptune (three, ref. 9). Because Jupiter is closer than the other giant planets, searches for smaller and fainter irregular satellites can be made. Here we report the discovery of 23 new irregular satellites of Jupiter, so increasing the total known population to 32. There are five distinct satellite groups, each dominated by one relatively large body. The groups were most probably produced by collisional shattering of precursor objects after capture by Jupiter.     

拟南芥bHLH家族转录因子DYT1在花药发育过程中调控胼胝质降解(英文)

胼胝质的合成和降解是雄配子体减数分裂过程中的一个重要特征,对后期花粉成熟有重要作用.在此研究中,分离到了一个雄性不育突变体msl57,该突变体的绒毡层分化及胼胝质降解过程出现异常,导致花粉败育.图位克隆和遗传分析表明:MSl57基因与bHLI-I家族转录因子DYTI(At4g21330)是同一基因.因此,将ms157突变体改名为dyt1-2.反式激活作用实验揭示了DYTI的激活功能域位于基因的250 ～504bp之间.通过酵母双杂交实验发现DYT1蛋白在体内可以形成同源二聚体来执行其功能.RT-PCR及定量PCR分析表明胼胝质酶相关基因A6的表达在突变体背景下严重下调.因此,DVF1通过调控胼胝质的降解来影响花药发育过程.     

Oscillatory cluster patterns in a homogeneous chemical system with global feedback

Oscillatory clusters are sets of domains in which nearly all elements in a given domain oscillate with the same amplitude and phase. They play an important role in understanding coupled neuron systems. In the simplest case, a system consists of two clusters that oscillate in antiphase and can each occupy multiple fixed spatial domains. Examples of cluster behaviour in extended chemical systems are rare, but have been shown to resemble standing waves, except that they lack a characteristic wavelength. Here we report the observation of so-called 'localized clusters'--periodic antiphase oscillations in one part of the medium, while the remainder appears uniform--in the Belousov-Zhabotinsky reaction-diffusion system with photochemical global feedback. We also observe standing clusters with fixed spatial domains that oscillate periodically in time and occupy the entire medium, and irregular clusters with no periodicity in either space or time, with standing clusters transforming into irregular clusters and then into localized clusters as the strength of the global negative feedback is gradually increased. By incorporating the effects of global feedback into a model of the reaction, we are able to simulate successfully the experimental data.     

Quantifying the evolutionary dynamics of language

Human language is based on grammatical rules. Cultural evolution allows these rules to change over time. Rules compete with each other: as new rules rise to prominence, old ones die away. To quantify the dynamics of language evolution, we studied the regularization of English verbs over the past 1,200 years. Although an elaborate system of productive conjugations existed in English's proto-Germanic ancestor, Modern English uses the dental suffix, '-ed', to signify past tense. Here we describe the emergence of this linguistic rule amidst the evolutionary decay of its exceptions, known to us as irregular verbs. We have generated a data set of verbs whose conjugations have been evolving for more than a millennium, tracking inflectional changes to 177 Old-English irregular verbs. Of these irregular verbs, 145 remained irregular in Middle English and 98 are still irregular today. We study how the rate of regularization depends on the frequency of word usage. The half-life of an irregular verb scales as the square root of its usage frequency: a verb that is 100 times less frequent regularizes 10 times as fast. Our study provides a quantitative analysis of the regularization process by which ancestral forms gradually yield to an emerging linguistic rule.     

一种非规则双K节点力学性能的非线性有限元分析

采用非线性有限元程序对一种非规则节点的静力工作性能进行研究,通过与节点试验数据对比,验证了有限元结果的正确性.采用该程序研究了节点在正常工作下的应力状态、受力特点、非线性阶段的塑性区扩展变化过程、失稳模式,以及极限承载力,根据实际工程提出了补强加固措施.     

柴油机供油系统中的油—汽两相流及对不规则喷射产生的影响

本文阐明了柴油机供油系统中油—汽两相流与不规则喷射的内在联系．分析了不规则喷射产生的机理，并指出在高速小负荷工况下，供油系统中的汽泡是产生不规则喷射的主要原因．