S. P. Bhattacharyya

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— In this paper, we present an alternative and new interpretation of the Nyquist criterion in terms of Bode plots of the plant and the controller. This result gives a nonparametric characterization of the frequency response of arbitrary order stabilizing controllers. The result shows that the frequency response of any stabilizing controller must satisfy(More)
The effects of salmon calcitonin (sCT) on the secretion of 17beta-estradiol (E(2)) were examined in female common carp, Cyprinus carpio. Vitellogenic stage fish adapted to high-Ca water were i.p. injected with vehicle, sCT, human chorionic gonadotropin (hCG), or hCG plus sCT. To determine whether ovarian follicles are equipped with CT receptors, a CT(More)
— A Genetic Algorithm is invoked to search out the wave operator leading to the determination of a few eigenvalues and eigenvectors of a specially designed real symmetric matrix (Durand matrix) that simulates a Hamiltonian supporting bound states coupled to continuum. The performance is compared with that of a standard iterative method for different(More)
BACKGROUND Erythropoietin, originally recognized for its role in erythropoiesis, has been shown to improve neurological outcome after stroke. Low-dose methotrexate is effective against certain inflammatory diseases, such as severe psoriasis and rheumatoid arthritis as well as Crohn's disease. Immunosuppressive effect of methotrexate also reduces the(More)
Mäkilä's comments on our paper suggest that the controller fragility problem is: 1) well known in the literature; 2) due to our poor choice of examples; 3) easily fixed by changing the optimization criteria; and 4) fixed by changing the implementation. We disagree with him on all counts and explain below. We have not encountered a single reference where the(More)