Interactive and dynamic graphical methods provide powerful tools to interface a data analyst with data. For multivariate data, interactive techniques such as linked brushing and identiication allow an analyst to query the data, isolate or mask subsets, and examine dependencies between many variables. Dynamic techniques such as the grand tour give the analyst a sense of the overall shape (cluste...

in this study, estimation of global and diffuse solar radiations of selected cities in nigeria was carried out to assess the feasibility of solar energy utilization. the results of this work show the variation of direct and diffuse component of solar radiation in summer and winter months. the contribution of diffuse solar radiation is high during the monsoon months whereas sky conditions are cl...

Significant changes in mean and median analysts’ forecasts errors documented in recent studies are not synchronized across commercial forecast databases over time and are, in large part, a function of the definitions and procedures that determine the reported earnings component of earnings surprises. In this study we describe a number of complications researchers face in drawing inferences from...

The first step in statistical data analysis is to verify three data features: dependency, stationarity, and distribution. If data are independent, it makes little sense to analyze them geostatisticaly. If data are not stationary, they need to be made so, usually by data detrending and data transformation. Geostatistics works best when input data are Gaussian. If not, data have to be made to be ...

The extent to which software quality is seen as an issue by IS professionals in Hong Kong, and the practices employed to achieve quality is investigated. One-hundred and seventy-five IS professionals were surveyed to obtain answers to the following questions: What definition of “quality” is being used? What, if any, techniques are being used to ensure a quality product? It will be shown that “q...

In the past, we have been looking for program comprehension tools that are able to interconnect operational and behavioral views, aiming at aiding the software analyst to relate problem and program domains in order to reach a full understanding of software systems. In this paper we are concerned with Program Comprehension issues applied to Domain Specific Languages (DSLs). We are now willing to...

The Agilent Technologies mass selective detector (MSD) coupled with deconvolution reporting software (DRS) provides additional powerful data processing capabilities to the MSD ChemStation software. Reviewing full scan gas chromatography/mass spectrometry data for the confirmation of pesticide residues can be a labor-intensive and time-consuming process requiring great skill and concentration by...

During the last decade, the mode of operation of many centralized computer installations has been significantly changed by the widespread use of remote job entry (RJE) . facilities. The increasing usage of remote work stations presents the analyst a significant problem in sizing remotes to efficiently handle the flow of jobs. Currently, few, if any, tools exist to aid the analyst in this area. ...

Analysis of traces is an increasingly active issue in knowledge discovery (kd). Unfortunately, to date, few tools are designed to help interactively the analyst during the knowledge discovery process. In this paper, we present Transmute, a tool to assist the analyst throughout an interactive kd process in traces. Transmute displays the results of the mining together with the source trace so tha...