Pyrrolizidine Alkaloids From Cynoglossum furcatam (2008)
Ravi, S, Ravikumar, T, Lakshmanan, A J
Two new pyrrolizidine alkaloids of Cynoglossum furcatam have been isolated and characterised. They are lactodine, a monoester alkaloid and viridinatine, a pyrrolizidine diester alkaloid. Lactodine...
Some properties of two families of classes of life distributions (2002)
We study the closure properties of the family ℒ(α) of classes of life distributions introduced by Lin (1998) under general compounding. We define a discrete analogue of this family and study some...
Self-Testing Without The Generator Bottleneck (2002)
Suppose P is a program designed to compute a function f defined on a group G. The task of self-testing P , that is, testing if P computes f correctly on most inputs, usually involves testing...
Checking Approximate Computations of Polynomials and Functional Equations (2000)
S Ravi, Kumar Ronitt Rubinfeld
A majority of the results on self-testing and correcting deal with programs which purport to compute the correct results precisely. In this paper, we observe that this notion of correctness is too...
On Learning Bounded-Width Branching Programs (1999)
Funda Erg, S Ravi, Kumar Ronitt Rubinfeld
In this paper, we study PAC-learning algorithms for specialized classes of deterministic finite automata (DFA). In particular, we study branchingprograms, and we investigate the influence of the...
Approximate Checking of Polynomials and Functional Equations (1999)
Funda Ergun, S Ravi, Kumar Ronitt Rubinfeld
In this paper, we show how to check programs that compute polynomials and functions defined by addition theorems --- in the realistic setting where the output of the program is approximate instead of...
Improving Spanning Trees by Upgrading Nodes (1998)
S. O. Krumke, M. V. Marathe, H. Noltemeir, R. Ravi, S. Ravi
Id: upgrade.tex,v 2.2 1997#09#18 13:14:08 krumke Exp wirth We study bottleneck constrained network upgrading problems.We are given an edge weighted graph G =#V;E# where node v 2 V can be upgraded at...
Approximate Checking of Polynomials and Functional Equations (1998)
Funda Ergun, S Ravi, Kumar Ronitt Rubinfeld
In this paper, we show how to check programs that compute polynomials and functions defined by addition theorems --- in the realistic setting where the output of the program is approximate instead of...
Approximate Checking of Polynomials and Functional Equations (1998)
Funda Ergun, S Ravi, Kumar Ronitt Rubinfeld
In this paper, we show how to check programs that compute polynomials and functions defined by addition theorems --- in the realistic setting where the output of the program is approximate instead of...
Approximate Checking of Polynomials and Functional Equations (1998)
Funda Ergun, S Ravi, Kumar Ronitt Rubinfeld
In this paper, we show how to check programs that compute polynomials and functions defined by addition theorems --- in the realistic setting where the output of the program is approximate instead of...
On Learning Bounded-Width Branching Programs (1997)
Funda Erg, S Ravi, Kumar Ronitt Rubinfeld
In this paper, we study PAC-learning algorithms for specialized classes of deterministic finite automata (DFA). In particular, we study branchingprograms, and we investigate the influence of the...
Simultaneous estimation of atenolol and amlodipine in formulations by reversed Phase-HPLC. (1997)
Ravi, S, Nanjan, M, Vasudevan, M, Shaat, N, Suresh, B, Sankar, S
Malignant schwannoma in neurofibromatosis [Letter to editor] (1996)
Rao, G, Hayath, M, Murthy, C, Janaki, M, Mallikarjun, B, Shankar, R, ...
Comparative cognitive effects of phenytoin and carbamazepine in adult epileptics. (1995)
Ravi, S, Sawhney, I, Prabhakar, S, Pershad, D, Nain, C, Sudhir, R