Gnu Data Language (GDL) is an open-source interpreted language aimed at numerical data analysis and visualisation. It is a free implementation of the Interactive Data Language (IDL) widely used in Astronomy. GDL has a full syntax compatibility with IDL, and includes a large set of library routines targeting advanced matrix manipulation, plotting, time-series and image analysis , mapping, and da...

This work presents the results of assessing the accuracy of statistical routines as implemented in the IDL platform, versions 5.6 and 6.0 for Windows XP and Linux. This is “a complete computing environment for the interactive analysis and visualization of data. IDL integrates a powerful, array-oriented language with numerous mathematical analysis and graphical display techniques. [1]” It is sho...

We describe an ultracentrifugation method for isolating the different lipoprotein classes relatively quickly. In this method the very-low-density lipoproteins are first separated by non-density-adjusted ultracentrifugation. The resulting infranatant material is then stained with Coomassie Brilliant Blue R-250 and ultracentrifuged in a density gradient. The intermediate-density lipoproteins (IDL...

With L a complete lattice and M a continuous lattice, this paper demonstrates an adjunction between M-valued L-topological spaces (i.e. (L,M)-topological spaces) and Idl(M)-valued L-topological spaces where Idl(M) is the complete lattice of all ideals of M. It is shown that the right adjoint functor provides a procedure of generating (L,M)-topologies from antitone families of (L,M)-topologies. ...

We have extended an Interface Deenition Language to handle event registration and notiication. Clients register interest in speciied classes of events and servers then notify them of any occurrence asyn-chronously. Event occurrences are identiied by parameters which conform to IDL typing constraints and can therefore be used in synchronous method invoca-tions. Methods to handle registration and...

Increased plasma cholesterol, particularly that portion associated with LDL, is an established risk factor for coronary heart disease [1, 2]. As a consequence, it is widely recommended [3] that LDL-cholesterol be determined in individuals with increased total cholesterol. Because isolation of the LDL fraction requires ultracentrifugation, a technique not generally available in service laborator...

Apolipoproteins E and C-III are modulators of lipoprotein metabolism that could affect development of atherosclerosis. The prevalence in plasma of apoB-containing particles (LpB) that contain either apoE or apoC-III, both or neither, and the effect of estrogen on these lipoproteins are unknown. The LpB particle system, defined by the presence or absence of apoE or C-III, was studied in 13 normo...

An established middleware technology for Internet-based distributed systems is CORBA, where interfaces are described with IDL. TTCN is a standardised test description language widely used in the telecommunications area. The current version of TTCN, version 3 (TTCN-3), is among others designed to test CORBAbased systems. This paper presents a definition of the OMG IDL to TTCN-3 mappings, which f...

This paper introduces a novel algorithm to compute equivalent latitude by applying regions of interest (ROI). The technique is illustrated using code written in Interactive Data Language (IDL). The ROI method is compared with the "piecewise-constant" method, the approach commonly used in atmospheric sciences, using global fields of atmospheric potential vorticity. The ROI method is considerably...