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Basu, S. K.

The Damodar, Bengal's River of Sorrow

Anti-Erosion Work in Kalimpong Forest Division

Measuring Ecosystem Patterns and Processes through Fractals

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Authors

S. K. Tripathi ¹, C. P. Kushwaha ², Arijit Roy ³, S. K. Basu ¹

Affiliations
1 Department of Computer Science, Banaras Hindu University, Varanasi 221 005, IN
2 Department of Botany, Banaras Hindu University, Varanasi 221 005, IN
3 Forestry and Ecology Department, Indian Institute of Remote Sensing, Dehradun 248 001, IN

Source

Current Science, Vol 109, No 8 (2015), Pagination: 1418-1426

Abstract

Changes in ecosystems are highly complex, heterogeneous and are extremely difficult to measure through single scale. Fractal geometry has been used to quantitatively estimate the extent of irregularity in ecosystem changes. However, in some cases it has been overly used giving misleading results. To avoid this, other metrics are also being used in studying changes in forest ecosystems. In this article, we review use of fractal geometry in measuring ecosystem components in a range of ecological conditions. Further, case studies from forest fragmentation and soil aggregates stability in different Indian tropical ecosystems with respect to management practices and environmental change have been described using fractal dimension. We have tried to point out some instances where fractals can more appropriately be used in assessing ecosystems properties and where it could not be successfully used. Characterization of ecological situations where fractals can effectively be used in general remains an important issue.

Keywords

Ecosystem Complexity, Ecosystem Patterns, Fractal Dimension, Landscape Change, Soil Processes.

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A Comparative Experimental Study on Fast Hole near Dry EDM of Stavax with Different Dielectric Coupled with Surface Response Curves

Abstract Views :350 | PDF Views:0

Authors

S. P. Lathkar ¹, B. Rajiv ², B. B. Ahuja ², S. K. Basu ²

Affiliations
1 MGM’S Research Centre, Nanded, IN
2 Department of Production Engineering and Industrial Management, College of Engineering, Pune, IN

Source

Manufacturing Technology Today, Vol 13, No 8 (2014), Pagination: 3-11

Abstract

This paper presents comparative experimental study on machining characteristics of through holes (1000 micron) produced on special alloy steel, Stavax, thick plate with different types of dielectrics. Fast hole rotary Near Dry EDM (NDEDM) machine using tubular hollow brass electrodes are used for machining. Several holes are drilled using identical input parameters based on full factorial design of experiment procedure with four center points. Corresponding values of Material Removal Rate (MRR), Tool Wear Rate (TWR), MRR /TWR ratio & % Electrode Ratio are calculated and compared. The empirical relationship for above responses are developed using Regression Analysis. Surface Response Curves are plotted to compare response of interest. The results revealed that MRR,TWR & MRR/TWR (λ) ratio depends up on appropriate selection of input parameters as well as selection of dielectric.

Keywords

Near Dry Electro Discharge Machining (NDEDM), MRR, TWR, Surface Response Curves.

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Informatics Publishing Limited

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Basu, S. K.

The Damodar, Bengal's River of Sorrow

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Anti-Erosion Work in Kalimpong Forest Division

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Measuring Ecosystem Patterns and Processes through Fractals

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A Comparative Experimental Study on Fast Hole near Dry EDM of Stavax with Different Dielectric Coupled with Surface Response Curves

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Optimization of the Machining Parameters in Wire Electrical Discharge Machining Process Using Genetic Algorithm

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