1,728,392 research outputs found
“Interdisciplinary, like everyone else.” But are you being interdisciplinary for the wrong reasons?
Get PDFInterdisciplinarity is the talk of the town. Funding agencies favour interdisciplinary research proposals, teaching programmes focus on developing interdisciplinary courses, and the publication of interdisciplinary studies has surged over recent decades. Lakshmi Balachandran Nair considers whether interdisciplinarity remains a strategy to surpass the limits of the methodological tools, theories, and views offered by a single discipline or has instead become something of an academic fad, leading to the further commodification of research, pseudo-interdisciplinarity, and a superficiality that may result in less rigorous, weak, thin science
Localization of observables in the Rindler wedge
Get PDFOne of the striking features of QED is that charged particles create a coherent cloud of photons. The resultant coherent state vectors of photons generate a nontrivial representation of the localized algebra of observables that do not support a representation of the Lorentz group: Lorentz symmetry is spontaneously broken. We show in particular that Lorentz boost generators diverge in this representation, a result shown also by Balachandran et al. [Eur. Phys. J. C 75, 89 (2015)EPCFFB1434-604410.1140/epjc/s10052-015-3305-0] (see also the work by Balachandran et al. [Mod. Phys. Lett. A 28, 1350028 (2013)MPLAEQ0217-732310.1142/S0217732313500284]. Localization of observables, for example in the Rindler wedge, uses Poincaré invariance in an essential way [Int. J. Geom. Methods Mod. Phys. 14, 1740008 (2017).0219-887810.1142/S0219887817400084]. Hence, in the presence of charged fields, the photon observables cannot be localized in the Rindler wedge. These observations may have a bearing on the black hole information loss paradox, as the physics in the exterior of the black hole has points of resemblance to that in the Rindler wedge
G. Balachandran (éd.), India and the World Economy
No full textÉtienne Gilbert. G. Balachandran (éd.), India and the World Economy. In: Tiers-Monde, tome 46, n°183, 2005. Paysans : modes de survie. pp. 716-717
Note--Note on a Control Problem of Balachandran and Tijms
No full textIn this note a conjecture of Balachandran and Tijms [Balachandran, K. R., H. C. Tijms. 1975. On the D-policy for the M/G/1 queue. Management Sci. 21 1073-1076.] concerning the optimality of the D-policy over the N-policy in an M/G/1 queueing system is proved, using an inequality for renewal functions. This inequality seems to have some importance of its own.
Manoj Balachandran
No full textIt offers the editorial team of the Mapana Journal of Sciences great pleasure to introduce to you the new edition. I am delighted to see the support and encouragement that this multidisciplinary UGC care listed journal is receiving from peers and significant resource experts from the fields of physical sciences, chemical sciences, mathematics, biological sciences, and computer sciences. All the authors who have contributed to the current edition have my heartfelt gratitude and respect. We have made an effort to publish six articles in this issue that are relevant to the various disciplines of chemistry, physics, mathematics and computer sciences.
The research article written by Sandipan Biswas and Shivnath Ghosh examines the polarity activity exploitation of medications for COVID-19 therapy using Valence Aware wordbook and SentimentReasoning (VADER) sentiment analysis on twitter. In this article authors have discussed the application of similar strategy in various fields. Article also gives brief idea about various stages involved in sentiment analysis. Input of tweets by various parties, tweets retrival, processing of the tweets, detection of sentiments, classification techniques and their evaluation are some of the important steps involved in the study. The article gave information about algorithm, flowchart of the sentiment analysis model. This kind of studies may help in understanding and analyzing the problem in the better way.
Rajamohan YL and Cyril A employed hydrothermal procedure for the synthesis of BaTiO3 perovskite material. The findings show that perovskite-based BaTiO3 coatings showed a noble shift in the corrosion potential of AZ31 alloys in NaCl media. Silicone resigns were critical in developing homogenous BaTiO3 perovskite material coatings on AZ31 alloy.
The review study on the use of Boltzmann systems in recommendation systems by Dheeraj Kumar Sahni and Dhiraj Khurana contributed to study the improvement of accuracy for huge data sets. As we know, recommendation systems assist e-commerce businesses in attracting new customers while also assisting customers in choosing the best product for their needs. The accuracy and the system's cold start issue are constant challenges for recommendation systems, which offer users the right environment with filters to establish the desired choices or possibilities. Therefore, combining the Boltzmann machine approach with the recommendation system helped increase the system's accuracy and provided a user-friendly environment. The authors of this review study covered Boltzmann machines, their types, and recommendation systems. In this review article authors discussed about Boltzmann machine, their types, recommendation system and their hybrid approach, and also discussed about studies which successfully established and used this hybrid approach of Recommendation system with Boltzmann machine.
Josna James introduced a new vertex covering to Intuitionistic Fuzzy graph, named it as Intuitionistic Fuzzy Path Induced Vertex Covering (IFPVC). An algorithm is proposed to determine the IFPVC set and IFPV covering number for IFG. In real life problems graph theory is one of best approaches because of the uncertainty and imprecision in such circumstances, Intuitionistic Fuzzy Graphs has a distinct advantage over graph theory and fuzzy graph theory. This study will help as a disaster management tool that helps to assess the feasibility of the suggested coverage set.
Saralaya et al. reported a novel and economically viable method for the synthesis of 2-chloro-3-[trans-4-(4-chlorophenyl)cyclohexyl]-1,4-naphthoquinone, an important intermediate for the synthesis of atovaquone, a notable anti-malarial agent. In this article, the synthesis strategy has been optimized, and a product of high quality and yield has been produced. In order to reuse the reagents that are used at different stages of the reaction, they also tried to synthesize the required molecule on a commercial scale in a manner that was both inexpensive and environmentally safe.
The realization of passive resistor-free lossy and lossless capacitance multipliers using two voltage differencing transconductance amplifiers (VDTAs) and a single grounded capacitor has been proposed by Tapas Kumar Paul, Suvajit Roy and Radha Raman Paul using PSPICE simulation. These devices, which do not require component matching constraints, are expected to be feasible options for applications like parasitic cancellation and quadrature sinusoidal oscillator circuits. As the simulation results go well with ideal theoretical calculations, the effects of non-idealities of VDTAs on the circuits have also been studied to open a broad scope towards making these simulated circuits real.
We feel immense pleasure to present these articles, which are relevant in their respective fields and can further lead the way to new research objectives. We invite our readers to have a fascinating experience of knowledge accumulation and conceptual novelty
Bauhinia bassacensis var. nicobarica Tiwari U. L., K. Ravikumar & N. Balachandran 2013, var. nov.
No full textBauhinia bassacensis var. nicobarica Tiwari U.L., K. Ravikumar & N. Balachandran, var. nov. (Figs. 1 & 2) Differs from the typical variety in having exstipulate leaves, lobes of leaves obtuse at apex, bract rusty tomentose and ovate, bracteoles 2, lanceolate, rusty tomentose; fertile stamens always 2; filaments hairy, anther lobes brown. Type:— INDIA. Great Nicobar Island: Near Army land, Campbell Bay, 20 February 2013, N- 71 o 2’ 2.9’’, E 93 o 55’ 2.9’’, 16 m ASL, K . Ravikumar, N. Balachandran and Umeshkumar Tiwari 115533 (holotype FRLH!; isotypes FRLH!, PBL!). Large, woody, climbers; tendrils coiled stout, glabrous; young branches rusty tomentose, mature grooved and lenticellate. Leaves exstipulate; petioles glabrescent, 2 7 cm long; lamina ovate-cordate, ca. 19 × 13 cm, 9 13-nerved, bifid, down to 3.5 4.8 cm length with narrow sinus, apex of lobes obtuse, base cordate, upper surface glabrous, lower brownish tomentose to glabrescent, base of the lamina with two distinct glands expanding up to pulvinous base. Inflorescences lateral or terminal, many-flowered, racemes or panicles; peduncles rusty tomentose; pedicels ca. 3.5 cm long in flower and ca. 7 cm long in fruit; bracts ovate, rusty tomentose, ca. 0.5 mm long; bracteoles 2, lanceolate, inserted near the middle of the pedicels, rusty tomentose, 1–1.5 mm long. Buds ovoid, rusty tomentose, 4–6 mm long. Hypanthium c. 1 mm long. Calyx during anthesis splitting into 2 segments forming right angles with the pedicels, 5–7 mm long, sometime persistent with fruit. Petals 2 above and three below, pubescent, creamish with purplish-red veins prominent on both sides, blade deltoid, crumpled, subequal, narrowly ovate to suborbicular with undulate margin, ca. 6 × 5 mm; claw 1.5–2 cm long, soft hairy. Stamens 9 (2 + 7); fertile stamens 2, staminodes absent sometime 1; filaments 1.2–1.6cm long, hairy; anthers 1–2 mm long, lobes brown; reduced stamens 7 in number, unequal, 3–9 mm long, filiform, white. Carpels densely brownish pilose, distinctly stalked, styles 6-8 mm, hairy with a small capitate stigma. Pods rusty tomentose, 8–13 × 3–4 cm with persistent style, stalks c. 3 mm long; styles persistent in fruit. Seeds, 2–5, dark brown, flattened, oblong-orbicular, c. 1.5 × 2 cm, smooth, glabrous. Flowering & Fruiting:— From February to March. Distribution:— India: Campbell Bay, Great Nicobar Island, Andaman and Nicobar Islands. Habitat:— Liana in mixed semi-evergreen forests. Ecological status:— About three individuals confined to an area of 1 km 2 were observed during field survey. Though it qualifies to be kept under Critically Endangered (CR) category, further studies and explorations in adjacent areas are required to ascertain its actual status. Etymology:— The varietal epithet refers to the place of its collection. This new variety is allied to typical var. bassacensis and var. backeri, but differs from both markedly in having exstipulate leaves, lobes of leaves obtuse at apex, bract rusty tomentose and ovate, bracteoles 2, lanceolate, rusty tomentose; fertile stamens always 2; filaments hairy, anther lobes brown (see table 1).Published as part of Tiwari, Umeshkumar, Ravikumar, Kaliamoorthy & Balachandran, Natesan, 2013, A new variety of Bauhinia bassacensis (Leguminosae: Caesalpinioideae) from Great Nicobar Island, India, pp. 12-18 in Phytotaxa 149 (1) on pages 13-16, DOI: 10.11646/phytotaxa.149.1.2, http://zenodo.org/record/510042
Note on a control problem of Balachandran and Tijms
No full textIn this note a conjecture of Balachandran and Tijms [Balachandran, K. R., H. C. Tijms. 1975. On the D-policy for the M/G/1 queue. Management Sci. 21 1073–1076.] concerning the optimality of the D-policy over the N-policy in an M/G/1 queueing system is proved, using an inequality for renewal functions. This inequality seems to have some importance of its own
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