This article reviews methodological issues that arise in the application of exploratory factor analysis (EFA) to scale revision and refinement. The authors begin by discussing how the appropriate use of EFA in scale revision is influenced by both the hierarchical nature of psychological constructs and the motivations underlying the revision. Then they specifically address (a) important issues t...

Prior art has shown it is possible to estimate, through image processing and computer vision techniques, the types and parameters of transformations that have been applied to the content of individual images to obtain new images. Given a large corpus of images and a query image, an interesting further step is to retrieve the set of original images whose content is present in the query image, as...

Timing Analysis and Optimization Techniques for VLSI Circuits

A B S T R A C T : MINIMOS, the Viennese two-dimensional MOS device simulation program, has been under development for almost seven years. The features of the most recent version of MINIMOS are described with particular regard to the implemented physical models. Some of the presently used numerical techniques are commented. An example demonstrates the capability of MINIMOS to tackle ULSI simulat...

The concept of endemism is useful in changes, scaling of endemism also changes, producing a different picture of endemism for each spatial scale. quantifying the biological uniqueness of an area, and has been used by many authors as a meaningful Moreover, the areal definition assumes equal levels of heterogeneity in different landscapes (clearly a alternative to simple species richness. The tra...

The spatial structure of population subgroups is important for many reasons. Information on the spatial concentrations of people in particular groups may be used for guiding government policy and is central to understanding issues such as differential access to resources. In addition, any geographical analysis of populations is partly a function of the spatial scale of variation of subgroups of...

Malicious software (or malware) is one of the most pressing and major security threats facing the Internet today. Anti-virus companies typically have to deal with tens of thousands of new malware samples every day. To cope with these large quantities, researchers and practitioners alike have developed automated, dynamic malware analysis systems. These systems automatically execute a program in ...

Scale space theory is a framework which permits one to analyze an image at diierent resolutions. The crucial feature is to let the resolution of an image vary continuously rather than discrete. This opens up the toolbox of mathematical analysis for image analysis. When extrema and saddle points of an image are tracked with increasing scale we know that they will have disappeared at suuciently l...

Survival analysis has been a topic of active statistical research in the past few decades with applications spread across several areas. Traditional applications usually consider data with only a small numbers of predictors with a few hundreds or thousands of observations. Recent advances in data acquisition techniques and computation power have led to considerable interest in analyzing very-hi...

SUMMARY A combined space-Fourier representation focused on directional scale analysis is presented. The method leads to a space-log polar frequency distribution. Application to seismic data shows diierentiation in scale and orientation. Attributes are extracted to illustrate this diierentiation.