编译BASIC语言编程质量的控制

本文利用编译BASIC语言具有的某些特殊功能,结合具体课题研究实践,从编程技术的模块化、坚固性和可用性三方面进行了实验,采用覆盖技术、“出误陷阱”等技术,使得在较小的内存中运行较大的程序并捕获可能发生的各种随机事件,达到了控制编程质量的目的。     

关于我国1957年旧重力基本网的精度与系统转换

简述了原国家重力基本网(57网)的历史和技术要点,详细地分析了57网的各类误差和产生原因,提出了新、旧系统转换的方法。本文研究表明,57网基本点相对观测的实际精度约为±0.06mgal,仪器平均值误差为1.6×10~(-4)。基本点重力值含-13.56mgal的基准误差和1.9×10~(-4)的尺度差,并含有±0.1～0.2mgal的非线性系统误差。对基本点实行新、旧系统转换误差为±0.05mgal,基本不损失其观测精度。     

随机误差传递与合成的蒙特卡罗模拟

对分析测试过程中随机误差的传递与合成进行了蒙卡罗模拟，并偏制了ＢＡＳＩＣ程序。该方法解决了当被合成误差不相互独立时泰勒级数公式所遇到的困难，当被合成误差相互独立时，与泰勒公式计算结果一致。     

一种BASIC通用菜单驱动程序的设计

在对ＣＣＤＯＳ汉字操作系统和ＢＡＳＩＣ语言特点的认真分析和处理后，得到了一个良好的通用菜单驱动程序，它完全可在不加改动或很少改动的情况下应用以汉字ＣＣＤＯＳ为操作系统的各种菜单驱动程序中。     

A FORTRAN Program for tabulating and naming amphibole analyses according to the International Mineralogical Association Scheme

Summary Amphibole analyses input to program AMPHTAB (optionally with H₂O, F, Cl, minor elements and one or both of Fe₂O₃, FeO), are output in conventional column tables, with formula units, complete IMA names, and extensive messages indicating the quality of each analysis. AMPHTAB accepts data-files ranging from a single amphibole analysis to (in principle) unlimited batched data-e.g., multiple analyses from each of numerous probe sections. Options are provided to reallocate total Fe in probe data between Fe³ and Fe², to allow for common analytical problems (e.g., low H₂O values), and to enable the number of oxygens in the formula unit to be either preset or assigned automatically. Results for 57 probe analyses are compared with an unpublished BASIC program, which uses a different Fe-reallocation method. Three-quarters of the IMA names resulting from the two programs are essentially identical, despite somewhat different estimated formula units. The remainder are borderline cases, where incidental changes in formula units effect disproportionate differences in name.

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Ein FORTRAN-Programm zum tabellieren und benennen von amphibolanalysen entsprechend dem Schema der International Mineralogical Association

Zusammenfassung In das Programm eingegebene Amphibolanalysen (wahlweise mit H₂O, F, Cl, Spurenelementen und Fe₂O₃, und/oder FeO), werden in Form herkömmlicher Spaltentabellen mit den Formeleinheiten, vollständigen IMA-Namen und ausführlichen Bemerkungen bezüglich der Analysenqualität ausgegeben. Das AMPHTAB-Programm verarbeitet Datensätze von einer einzigen Amphibolanalyse bis zu (im Prinzip) unbegrenzten Datenblöcken; z. B. Mehrfachanalysen eines Probenabschnittes von mehreren. Es sind die Möglichkeiten vorgesehen, das Gesamteisen in einer Analyse in die Fe³ und Fe²-Anteile umzurechnen, allgemeine analytische Probleme (z. B. niedrige H₂O-Gehalte) zu lösen und die Anzahl der Sauerstoffatome in der Formeleinheit entweder vorzugeben oder automatisch setzen zu lassen. Die Resultate von 57 Mikrosonden-Analysen sind mit einem unveröffentlichten BASICProgramm, das eine andere Methode zur Aufteilung des Fe-Gehaltes benutzt, verglichen worden. Drei Viertel der von den beiden Programmen vorgeschlagenen Mineralnamen sind identisch, trotz einiger unterschiedlich berechneter Formeleinheiten. Die übrigen 25% sind Grenzfälle, bei denen zufällige Veränderungen in den Formeleinheiten unverhältnismäßige Unterschiede in der Benennung bewirkten.

     

用拉格朗日插值法求钻程坐标及其PC—1500程序

传统方法绘制的钻程线投影图,往往成为较明显的折线。不符合本来是圆滑曲线的钻程线,且其误差也较大,而用拉格朗日插值法可以根据已得到的测斜结果,拟合出一条圆滑的钻程线。本文介绍了用这种方法编制的PC—1500机BASIC程序,使地质人员可用该机计算制图,摆脱繁锁的手工操作,提高工效和成图质量。     

野外地磁测量的记录软件

就流动地磁观测如何应用 PC—1500计算机代替手工记簿-实现记录方式的“变革”,提出一种新的记录软件。该软件的全部源程序均采用 BASIC 语言编写,其主要功能包括:①记录野外地磁观测数据,计算各种均值、桩位差、仪器差,并判断是否符合地磁规范要求。②数据的打印与存储。     

矩阵运算的几种算法实现探讨

以求解正形变换10参数为例,讨论了分别采用True BASIC语言、Mathematica软件、MATLAB软件和C Builder语言的矩阵运算的算法实现方法,分析了4种算法的计算结果,说明了其相互之间精度相差很小、各有所长。     

Rising powers: the evolving role of BASIC countries

The exponential growth in global populations, economic activity and resource utilization means it is becoming increasingly difficult to satisfy global demand for a number of fundamental resources, while some key ecosystems services are under stress. The likelihood of future resource scarcities have begun to influence the positions taken within international climate change negotiations by fast-growing developing countries. When Brazil, South Africa, India, and China formed the BASIC group it took many by surprise. The coordination needed to align this heterogeneous group of countries cannot simply be understood in terms of a set of shared interests around climate policy. How the BASIC group emerged and the nature of its cooperation on climate change are examined within the broader context in which these increasingly powerful countries came to join forces. Although traditionally aligned with the G77 group of developing countries, recent strategising as a group of emerging economies reflects their realization that there are insufficient global resources available to follow the same development pathway as industrialized countries. Hence, they must seek alternative growth pathways, which requires establishing common ground while also keeping track of each others' positions on important global issues like climate change.     

Flexible Standardization: Making Interoperability Accessible to Agencies with Limited Resources

Semantic standardization is an integral part of sharing data for GIS and spatial analysis. It is part of a broader rubric of interoperability or the ability to share geographic information across multiple platforms and contexts. GIScience researchers have made considerable progress towards understanding and addressing the multiple challenges involved in achieving interoperability. For local government agencies interested in sharing spatial data, however, current interoperability approaches based on object-oriented data models represent idealistic solutions to problems of semantic heterogeneity that often exceed the level of sophistication and funding available. They are waiting for the market to decide how interoperability should be resolved. In order to assist in this transition, this paper presents a rule-based Visual Basic application to standardize the semantics of simple spatial entities using several classification systems. We use the example of well-log data, and argue that this approach enables agencies to share and structure data effectively in an interim period during which market and research standards for semantic interoperability are being determined. It contributes to a geospatial data infrastructure, while allowing agencies to share spatial data in a manner consistent with their level of expertise and existing data structures.