A graphics package has been developed to display the main chain torsion angles phi, psi (phi, Psi); (Ramachandran angles) in a protein of known structure. In addition, the package calculates the Ramachandran angles at the central residue in the stretch of three amino acids having specified the flanking residue types. The package displays the Ramachandran angles along with a detailed analysis ou...

Clutter affects almost any kind of visual technique and can obscure the structure present in the data even in small datasets, making it hard for users to find patterns and reveal relationships. In this paper we present a general strategy to analyze and reduce clutter using a special kind of sampling, together with an ad-hoc displacement technique and perceptual issues collected through a user s...

In this paper we present an application of single cluster visualization (SCV) a technique to visualize single clusters of high-dimensional data. This method maps a single cluster to the plane trying to preserve the relative distances of feature vectors to the corresponding prototype vector. Thus, fuzzy clustering results representing relative distances in the form of a partition matrix as well ...

In exploratory tasks involving high-dimensional datasets, dimensionality reduction (DR) techniques help analysts to discover patterns and other useful information. Although scatter plot representations of DR results allow for cluster identification similarity analysis, such a visual metaphor presents problems when the number instances dataset increases, resulting in cluttered visualizations. th...

Utilization of Photodisintegration reaction of Deuterium, H(γ,n)H, is a precise technique for determining the percentage of H in tritiated and natural water. The Na(n,γ)Na reaction is a suitable γ-source for producing the H(γ,n)H reaction. Tehran Research Reactor was used as a neutron source for producing Na isotopes. The BF3 detectors were used to detect the neutron emission of H2 content of w...

Background: Noise mapping in industry can be useful to assess the risks of harmful noise, or to monitor noise in machine rooms. Using GIS -based software for plot of noise maps in an indoor noisy work environment can be helpful for occupational hygienists to monitor noise pollution. Methods: This study was carried out in noisy packaging unit of a food industry in Ghazvin industrial zone, to ev...

The establishment of several large area monitoring networks over the past few decades has led to increased research into ways to spatially balance sample locations across the landscape. Many of these methods are well documented and have been used in the past with great success. In this paper, we present a method using geographic information systems (GIS) and fractals to create a sampling frame,...

This paper focus on modeling and estimating tail parameters of commercial fire loss severity. Using extreme value theory, we centralized on the generalized Pareto distribution (GPD) and compare with standard parametric modeling based on Lognormal, Exponential, Gamma and Weibull distributions. In empirical study, we determine the thresholds of GPD through mean excess plot and Hill plot. Kolmogor...

Highly reproducible fabrication of porous layer open tubular (PLOT) structures in fused silica capillaries is often challenging; thus, methods to measure layer thickness growth in real time represent a powerful tool for the production of such columns. The work presented herein demonstrates the application of optical absorbance in the near-infrared (near IR) range for the in-process measurement ...