172,113 research outputs found
Spatial pattern of nerve differentiation in Hydra is due to a pattern of nerve commitment
No full textThe pattern of nerve differentiation along the body column of Hydra was investigated. Nerve precursors in late S phase were labeled with [3H]thymidine and their distribution compared with that of newly differentiated nerves. The two distributions were found to be the same. Based on independent evidence that nerve commitment occurs in mid-to late S phase (G. Venugopal and C. David, 1981, Develop. Biol.83, 361–365) it was concluded that the pattern of nerve differentiation along the body column of Hydra is due to differences in nerve commitment in different body regions. Furthermore, the level of nerve commitment in head and foot tissue is sufficiently high to deplete stem cells in these regions as is observed
Prashanth C. R KB Raja KR Venugopal
No full textThe signature verification system is always the most sought after biometric verification system. Being a behavioral biometric trait which can be imitated, the researcher faces a challenge in designing such a system to counter intrapersonal and interpersonal variations. This papers presents DWT based Off-line Signature Verification using Angular Features (DOSVAF). The signature is resized and Discrete Wavelet Transform (DWT) is applied to get four bands. The approximation band is considered and skeletonized. The exact signature area is cropped and resized so that the fair comparison is made among the signatures to produce better result. The angular features are extracted by dividing the signature image into number of blocks. The angular features of database and test signature are compared using distance metric. It is found that the values of FAR and FRR at optimal threshold are better compared to that of existin
TeraWatt North Atlantic spectral wave model input files (for MIKE 21)
No full textNORTH ATLANTIC MIKE 21 MODEL INPUT FILES
This submission includes the input files for the North Atlantic spectral wave model that is described in [1,2]. It formed part of the TeraWatt and EcoWatt2050 EPSRC projects (grant numbers EP/J010170/1 &
EP/K012851/1 respectively).
The input files require the MIKE 21 modelling suite to run, available commercially from https://www.mikepoweredbydhi.com/; they were created and validated using the 2014 edition. Input files are being stored instead of outputs as per RCUK guidelines due to the size of the output files.
For further information please contact Dr. Vengatesan Venugopal, School of Engineering, University of Edinburgh ([email protected]).
[1] V. Venugopal and R. Nemalidinne, ‘Wave resource assessment for Scottish waters using a large scale North Atlantic spectral wave model’, Renewable Energy, vol. 76, no. Supplement C, pp. 503–525, Apr. 2015.
[2] V. Venugopal, R. Nemalidinne, and A. Vögler, ‘Numerical modelling of wave energy resources and assessment of wave energy extraction by large scale wave farms’, Ocean & Coastal Management, Mar. 2017.See readme.txt
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Drag and inertia coefficients for horizontally submerged rectangular cylinders in waves and currents
No full textThe results of an experimental investigation carried out to measure combined wave and current loads on horizontally submerged square and rectangular cylinders are reported in this paper. The wave and current induced forces on a section of the cylinders with breadth-depth (aspect) ratios equal to 1, 0.5, and 0.75 are measured in a wave tank. The maximum value of Keulegan-Carpenter (KC) number obtained in waves alone is about 5 and Reynolds (Re) number ranged from 6.3976103 to 1.186105. The drag (CD) and inertia (CM) coefficients for each cylinder are evaluated using measured sectional wave forces and particle kinematics calculated from linear wave theory. The values of CD and CM obtained for waves alone have already been reported (Venugopal, V., Varyani, K. S., and Barltrop, N. D. P. Wave force coefficients for horizontally submerged rectangular cylinders. Ocean Engineering, 2006, 33, 11-12, 1669-1704) and the coefficients derived in combined waves and currents are presented here. The results indicate that both drag and inertia coefficients are strongly affected by the presenceof the current and show different trends for different cylinders. The values of the vertical component inertia coefficients (CMY) in waves and currents are generally smaller than the inertia coefficients obtained in waves alone, irrespective of the current's magnitude and direction. The results also illustrate the effect of a cylinder's aspect ratio on force coefficients. This study will be useful in the design of offshore structures whose columns and caissons are rectangular sections
TeraWatt North Atlantic spectral wave model input files (for MIKE 21)
No full textNORTH ATLANTIC MIKE 21 MODEL INPUT FILES This submission includes the input files for the North Atlantic spectral wave model that is described in [1,2]. It formed part of the TeraWatt and EcoWatt2050 EPSRC projects (grant numbers EP/J010170/1 & EP/K012851/1 respectively). The input files require the MIKE 21 modelling suite to run, available commercially from https://www.mikepoweredbydhi.com/; they were created and validated using the 2014 edition. Input files are being stored instead of outputs as per RCUK guidelines due to the size of the output files. For further information please contact Dr. Vengatesan Venugopal, School of Engineering, University of Edinburgh ([email protected]). [1] V. Venugopal and R. Nemalidinne, ‘Wave resource assessment for Scottish waters using a large scale North Atlantic spectral wave model’, Renewable Energy, vol. 76, no. Supplement C, pp. 503–525, Apr. 2015. [2] V. Venugopal, R. Nemalidinne, and A. Vögler, ‘Numerical modelling of wave energy resources and assessment of wave energy extraction by large scale wave farms’, Ocean & Coastal Management, Mar. 2017.Venugopal, Vengatesan. (2017). TeraWatt North Atlantic spectral wave model input files (for MIKE 21), 2010 [dataset]. School of Engineering, University of Edinburgh. http://dx.doi.org/10.7488/ds/2216
A Dicationic Bismuth(III) Lewis Acid: Catalytic Hydrosilylation of Olefins
No full textInvited for the cover of this issue is Ajay Venugopal from the Indian Institute of Science Education and Research Thiruvananthapuram. The cover image shows dication Tp(Me2)Bi](2+) catalyzing olefin hydrosilylation under mild conditions
Characterisation of a compound in-cis GATA2 germline mutation in a pedigree presenting with myelodysplastic syndrome/acute myeloid leukemia with concurrent thrombocytopenia
No full textLetter to the editorC N Hahn, P J Brautigan, C-E Chong, A Janssan, P Venugopal, Y Lee, A E Tims, M S Horwitz, M Klingler-Hoffmann, and H S Scot
Dr. Ambedkar Memorial Lecture 2014 on Inclusive Governance and Social Justice
No full textWe express our profound gratitude to Shri TN Chaturvedi, Chairman IIPA and Dr. T. Chatterjee, Director, IIPA for their constant support and guidance to the activities of the Chair. They are a great source of inspiration and extend full cooperation for the smooth functioning of the Chair. Their creative inputs and insights enrich the functioning of the Chair. We are sincerely thankful to Dr. Ambedkar Foundation, for valuable suggestions and support to the Chair. We are deeply indebted to Shri KR Venugopal for setting the stage of this publication by delivering an insightful and illuminating lecture and also for going through the whole manuscript with utmost care
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