微机三维图形数据描述的数据库方法

本文提出一种用数据库方法来描述和组织三维图形数据的方法,设计一个用户接口,实现数据管理系统dBASEⅢ与BASIC图形应用程序之间的图形数据转换,充分发挥两种语言的优点。这种数据结构及其处理方法应用在微机三维图形显示上,已获得了很好的效果。     

Auto CAD图形软件的编程环境

本文详细介绍了用 BASIC.FORTRAN 和 dBASEⅢ编写 Auto CAD 绘图程序的方法,并给出了实际例子.文中给出的方法采用子程序方式建立 Auto CAD 的绘图命令集,用户可以用高级语言或 dBASEⅢ描述绘图命令子程序集,供主程序调用.执行带有绘图命令调用的程序之后即可生成 Auto CAD 可以执行的绘图文件.利用这些方法可以为 Auto CAD 图形软件建立方便、实用的编程环境.     

汉字dBASEⅢ的应用——通讯录管理系统

通讯录管理系统应用汉字dBASEⅢ关系数据库设计而成,为学校、机关、工厂查询其人员的通讯地址及电话号码提供了方便,是会议备忘录中不可缺少的一部分,该系统由CCDOS2.10系统盘驱动,其软件由汉字dBASEⅢ 1.0A支持。故可在IBM-PC/XT或其兼容机卜运行,由24针打印机输出。整个系统由功能菜单、通汛录登记、通讯录输出、通讯录更改、通讯录查询五个模块组成。采用提示法输入,只要会启动dBASEⅢ的非计算机专业人员均可使用。通讯录管理系统完全符合关系数据库浯言的一体化特点,即具备查询、更新数据定义的功能。在输出部分,打印表头由用户定义输出.同时也符合非过程化的特点,只需用户提出“干什么”即可,无需用户了解存取的路径。该系统的数据库具有完整性。定义姓名为8字节的字符型,工作单位和通讯地址为40字节的字符型,电话号码为15字节的字符型。系统提供了约束条件的方法,在各模块都作出判断。如果姓名为全空输入,系统会停止继续往下运行,既保证了数据库的完整,又节省内存空间,提高运行速度。考虑到整个系统的保密性,设计了工作口令,如三次非法操作,进行第四次非法操作时,将导致系统退出dBASEⅢ状态。     

dBASEⅢ中容易被忽略的一个语法问题

目前,微机关系数据库管理系统“汉字 dBASE Ⅲ”被广泛应用.特别是随着 dBASE ⅢPLUS 及 FOXBASE PLUS 的推出,不仅运算速度大大提高,适应范围大大扩大,而且,由于它们之间高度的兼容性,例如 FOXBASE PLUS 的全部多用户版本与单用户版本兼容,与 dBASE Ⅲ PLUS 也完全兼容.用 dBASE Ⅲ写的源程序不需作任何改动就可在 FOXBASE     

汉字dBASE—Ⅱ/Ⅲ关系数据库关键字段的代码转换

本文订论了汉字dBASE—Ⅱ/Ⅲ关系数据库关键字段的代码转换问题.结合实例分析,用程序设计方法实现了关键字段的代码转换.实例用汉字dBASE—Ⅲ为开发工具,在IBM—PC/xT及其兼容机上实现.     

BASIC语言与DBASE的数据共享

讨论关系数据库管理系统DBASEⅢ与高级语言BASIC的数据共享。     

化工物性数据库CPPDB在IBM-PC/XT机上的实现

讨论了文题实现方法,介绍了该数据库的总体结构。CPPDB利用dBASE Ⅲ支持建库,数据独立性高,修改、扩充方便。CPPDB存储了468种物质的29种物性数据,具有较强的物性估算和图形输出功能。     

一种为C—dBASEⅢ增加图形功能的方法

本文分析了dBASE Ⅲ库文件的结构与c语言的数据结构,给出了采用Turb C绘制统计直方图dBASE Ⅲ接口的程序实例。采用这种方法可以为C-dBASE Ⅲ编制的事务处理系统,增加各种统计图形。     

dBASEⅢ和BASIC语言交互使用的几种方法

本文较为详细地叙述了dBASEⅢ和BASIC语言之间交互使用及数据交换中的一些问题,提出了解决办法,并给出了两种语言之间交互使用的几种行之有效的方法。     

正确控制打印机走纸换页的几种有效方法

<正> 报表输出技术是一门涉及面广而且比较复杂的技术,在Foxbase和dBASEⅢ中都提供了报表格式文件,用户可以方便地设计打印输出报表,但由于这种报表不能改变字体等原因,往往满足不了各种业务部门对报表的多种形式的需要,因而实用性不大,在应用程序的开发中,常常使用程序来控制输出报表,这样可以根据业务要求,灵活地输出各种形式美观、协调的报表,但是,在程序中当使用格式控制语句@语句在打印机上输     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

The Analects and the Moment in Peking——The influence of a Confucian education system on the personality formation,the way of thinking and the fate of the main characters

0.Preface China has long been boasting of its colorful and immense culture which comprises of Taoism,Confucianism and Buddhism.The interwoven influence among the religions on Chinese way of thinking,on the nation＇s behavior in their social life throughout the long history is beyond list.