186,575 research outputs found
Tettagalma striata Menon, new species
No full textTettagalma striata Menon, new species Figs 1–2 Diagnosis. As for genus. Description. Adult in ventral aspect, with right forewing almost complete and left forewing largely missing; hind wings not preserved (Fig. 1). Body. Head and thorax partly obscured by thin film of sediment. Head small, 1 mm long, 3 mm wide, bearing small, lateral eyes; antennae short, inserted before the eyes. Rostrum and most of cuticle not preserved. Thorax 8 mm long, 9 mm wide; legs not preserved. Abdomen 14 mm long robust, elongated, pointed posteriorly; abdomen composed of nine visible segments of slightly different size (Fig. 1): second segment 1 mm long, 9 mm wide; last segment 1.5 mm long, 2.5 mm wide. Forewings. 25 mm long, elongated, with rounded apex, highly sclerotized, covered by thin layer of sediment, at least over basal area. Costal margin prominent, indented at nodus and thinning toward apex. Costal space slightly wider basally. Nodus situated 12 mm from wing base. Sc+R origin at wing base, straight, prominent, bifurcating at approximately a quarter of wing length (6 mm from wing base); R simple, almost parallel to costal margin, with slight indentation at nodal line, reaching the margin anteriorly to apex. Rs with three branches, basally straight, slightly sigmoidal distally, first two branches reaching margin anterior to apex (Fig. 2). Crossvein rsma straight, simple, situated on distal half of wing, with anterior tip tilted toward wing base. M+CuA origin apparently from R, near wing base, straight, bifurcating at intersection with cross vein scp+rm+cua; the latter long, vertical, strongly prominent; M branches, MA and MP, originating before nodal line; MA forking well after nodal line; MA slightly indented at level of mamp 1 crossvein; MP slightly sigmoid, with two apical branches. CuA simple, initially straight, curving anteriorly near nodal line, deflected abruptly along nodal line and curving posterorly to margin. Crossveins mpcua long, prominent, distally placed. CuP apparently straight and anal area not visible, obscured by body. Cross venation between the main longitudinal veins forming eight closed apical cells and four closed anteapical cells (Fig. 2). Marginal membrane relatively wide, 0.40. 6 mm, bearing prominent striation. Striae equidistant, approximately 0.2 mm. Hairs and setae have left an impression basally on wing costal area. Original colour pattern across radial, medial, and cubital systems preserved as a dark brown coloration. Holotype. SMNS 65507, deposited in the Staatlisches Museum für Naturkunde Stuttgart, Germany. Etymology. From the Latin striata, in reference to the parallel striae in the marginal membrane. Remarks. This genus and species is most similar to the extant Tettigarcta and to Liassotectigarcta from the Liassic of Germany. It differs from the Recent genus by having more branches of MA, the fork of M being placed more distally, closer to nodal line, and by the basal venation with the origin of M closer to the base. The most noticeable difference from Liassotectigarcta is the wing length (42.7 mm in Liassotettigarcta). Furthermore, the new species differs also from this species mainly by the forewings being wider with rounded apex, and by having a wider marginal membrane. CuA in Liassotettigarcta is not deflected anteriorly at the nodal line as in Tettagalma; this may be caused by the nodal line being more distally placed in Liassotettigarcta.Published as part of Menon, Federica, 2005, New record of Tettigarctidae (Insecta, Hemiptera, Cicadoidea) from the Lower Cretaceous of Brazil, pp. 53-58 in Zootaxa 1087 on pages 54-56, DOI: 10.5281/zenodo.17050
Management strategies for prevention of forest fire and environmental degradation in tropics with special reference to Western Ghats of Kerala region, India
No full textManagement of forest fire is one of the top priority activities of forest departments, both in tropics and temperate regions. Extensive amount and intensive efforts are deployed to combat fire. The results of a case study on forest fire prone mapping conducted at Periyar tiger reserve in Western Ghats of Kerala, India, was highlighted, and based on the study, the implementation of fire management strategies were discussed. The fire risk map was validated with the forest fire inventory points of Forest Survey of India. Forest fire is a frequent occurrence in tropical forests, especially in moist deciduous and dry deciduous regions. Though forest fire management is one of the major activities of forest departments, the forest fire mitigation is not 100% successful. The magnitude of forest fire, its frequency, potential location, etc., can be assessed using Geoinformatics techniques, by giving different weightage status to fire controlling factors. A case study was conducted on these lines and control measures were highlighted using different management strategies. The implementation of the desired action plan for sustainable development and conservation of forests can be successful only by getting the full support and confidence of the stakeholders. The stakeholder support for environmental management aspects is possible only by convincing them that they are directly or indirectly getting the benefits by the proposed action. Usually, most of the environmental management activities may lead to nontangible benefits, which is apparently non-visible, hence getting stakeholder support may not be an easy task. Various marketing strategies needs to be used to convince the beneficiaries to implement good conservation practices for the betterment of the local inhabitants.</p
Comparisons of Two Integral Inequalities with Hermite-Hadamard-Jensen's Integral Inequality
No full textCertain comparisons of Iyengar-Mahajani’s and Kesava Menon’s
integral inequalities with Hermite-Hadamard-Jensen’s integral inequalities are
considered and some mistakes in the paper [On certain inequalities by Iyengar
and Kesava Menon, Octogon Math. Mag. 4 (1996), no. 1, 9–11.] are corrected.
Some applications of these inequalities to elementary functions are carried out
and several inequalities involving mean values are obtained
Matrices which commute with Menon operators
No full textIf A is a nonnegative square matrix and X is a vector, then the Menon operator associated with A, denoted by TA, is defined by (TAX)i = (n/sigma over j=1 (A) ji (n/sigma over k=1 (A) jk (X)k)-1)-1. A close relation 18 known to exist between doubly stochastic matrices and Menon operators. The following problem is investigated: If each of E and F is a matrix, when is ETAF a Menon operator? It is conjectured, but not proven, that if A is a nonnegative square matrix satisfying certain criterion, and each of E and F is a nonnegative matrix such that ETAF is a Menon operator, then each of E and F is the product of a diagonal matrix with positive diagonal and a permutatibn matrix. This conjecture is supported by examples, and also by theorems which show that if A is doubly stochastic and ETA = TAE then either there is a number r such that rE is doubly stochastic or there is a permutation matrix P such that PtEP can be partitijned into a certain block form. A condition is defined on a doubly stochastic matrix which implies that ETA=TAE if and only if there is a number r such that rE is a permutation matrix.Mathematics, Department o
A priori and a posteriori analysis of the hybrid two-level large-eddy simulation method for high Reynolds number complex flows
No full textWe present a priori and a posteriori analysis of the assumptions and predictions of the hybrid two-level large-eddy simulation (TLS-LES) method for high Reynolds number complex flows. The TLS-LES methodology is a multi-scale framework for simulation of turbulent flows in complex configurations at practically relevant Reynolds number. It additively combines the two-level simulation (TLS) model with a conventional large-eddy simulation (LES) approach by employing a static or dynamic blending function. In the present study, first we analyze the model assumptions employed by the TLS model to obtain the small-scale solution necessary for closure of the large-scale equations. Afterward, we analyze the large-scale and small-scale solutions to assess the predictive ability of the multi-scale framework for specific turbulence physics such as role of forward and backscatter of energy and presence of co- and counter-gradient diffusion. To perform these investigations, we consider cases with increasing degree of geometrical complexity, namely, flow in a periodic channel, flow past a bump placed on the lower surface of the channel and flow past a finite-span NACA0015 airfoil
Risk-reducing early salpingectomy and delayed oophorectomy as a two-staged alternative for primary prevention of ovarian cancer in women at increased risk: a commentary.
No full textThis is the peer reviewed version of the following article: Gaba, F. , Piek, J. , Menon, U. and Manchanda, R. (2019), Risk reducing early salpingectomy and delayed oophorectomy as a two staged alternative for primary prevention of ovarian cancer in increased risk women: a commentary. BJOG: Int J Obstet Gy. Accepted Author Manuscript. doi:10.1111/1471-0528.15651, which has been published in final form at https://doi.org/10.1111/1471-0528.15651. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Version
Communal Harmony as Governmentality: Reciprocity, peace-keeping, state legitimacy, and citizenship in contemporary India
No full textDebates about secularism in post-independence India have often revolved around the visions of two of the country's founding fathersM. K. Gandhi and Jawaharlal Nehru. A sharp distinction is drawn between them by those who argue that the Gandhian model (or, what in common parlance and state discourses is called communal harmony) stems from Indian cultural and religious values, and lies beyond the realm of the state. The Nehruvian model, however, is a state project through and through. This article transcends this dichotomy to show that the association of Nehru and Gandhi with these models does not necessarily mean that secularism and communal harmony faithfully reflect their ideas and, despite the differences in their aims and methods, both models are united in the discourses and practices of the state as strategies of governmentality'. After redefining the core of communal harmony as reciprocity (rather than tolerance), I show how it is performed, how it supplements the state's efforts to keep the peace in a religiously plural society by the force of law, and shores up the state's legitimacy deficit. However, the state's simultaneous involvement in Nehruvian and Gandhian projects is not an innocuous fact because it undermines the state's constitutional and secular obligations to non-discriminatory citizenship in the Indian nation. The argument is that the state's endorsement of dargah-centred Islamic piety as an exemplary site of communal harmony and particular ideas of the Indian nation legitimized by communal harmony problematizes' the national belonging of certain kinds of pious Muslims
A Menon-type identity using Klee's function
No full textsummary:Menon's identity is a classical identity involving gcd sums and the Euler totient function . A natural generalization of is the Klee's function . We derive a Menon-type identity using Klee's function and a generalization of the gcd function. This identity generalizes an identity given by Y. Li and D. Kim (2017)
Nanda Menon, 1969-1970 International House Student 2
No full textNanda Menon was a student and member of the International House Program from India at Jacksonville State University in 1969-1970. (circa 1970)https://digitalcommons.jsu.edu/lib-ac-histimg/40462/thumbnail.jp
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