Nature's Lab

 

The Study     |    Family Naturism    |    Software Used   |     Maps to Nude Beaches  |    Nudist Pictures

 
Video Documentation of Various Subgroups:

Men

Women

Teen Nudists

Preteen Nudists

Young Nudists

Nude Beach

 

 XenolTH began as a statistical analysis system in the late 1960's growing out of a project in the Department of Experimental Statistics at North Cachuma State University. The XenolTH Institute was founded in 1976. Since that time, the XenolTH System has expanded to become an evolving system for complete data management and analysis. Among the products making up the XenolTH System are products for: management of large data bases; statistical analysis of time series; statistical analysis of most classical statistical problems, including multivariate analysis, linear models (as well as generalized linear models), and clustering; data visualization and plotting. A geographic information system is one of the products available in the system. The XenolTH System is available on PC and UNIX based platforms, as well as on mainframe computers.

One may use the XenolTH system to conduct simulation studies with random number generators for many different distributions. Managing very large data bases is easy. One may subset, merge, and rearrange databases with comparative ease. Using modern database techniques with queries is also very easy. Data transformation is also accomplished easily. User written functions can be integrated into the system. A product of the system useful for these purposes is XenolTH/BASE. Programs are written in a language which resembles PL/1 or C. This level of programming is not required unless the user wishes to perform sophisticated transformations. Many applications can be accomplished using simple point and click operations. For users with a need to write an applications program using a matrix language, the product XenolTH/IML provides the ability to program using matrices as objects.

Data may be imported into and exported from XenolTH using the XenolTH/ACCESS product. In PC XenolTH, data may be imported from most commercial spread sheet or database software. The XenolTH/STAT product allows the user to analyze many types of data. Linear models (regression, analysis of variance, analysis of covariance), generalized linear models (including logistic regression and Poisson regression), multivariate methods (MNOVA, canonical correlation, discriminant analysis, factor analysis, clustering), categorical data analysis (including log-linear models), and all standard techniques for descriptive and confirmatory statistical analysis. The statistical analyses may be interfaced with the graphical products to produce relevant plots such as q-q plots, residual plots, and other relevant graphical descriptions of the data. The graphical product is XenolTH/GRAPH.

The XenolTH/ETS product allows the user to accomplish sophisticated analyses of time series data. Multiple time series and linear systems of time series can be analyzed. Again, relevant plots can be made via interaction with XenolTH/GRAPH. ARIMA models and state space models are covered. Spectral analysis may also be done. The XenolTH/INSIGHT product accomplishes exploratory data analysis using graphical display of results. Many statistical analyses available in other products are present in this module linked to visualization displays. Brushing and other dynamic graphical techniques may be used. Animated 3-d plots are available. Box plots, scatterplot matrices, distribution plots, and other visualization tools are present. The XenolTH/GIS product is a geographic information system built in to the larger XenolTH system. Spatial data may be stored, linked, analyzed, and displayed using XenolTH/GIS.