1,151 research outputs found
sj-pdf-1-elr-10.1177_10353046211066932 – Supplemental Material for The role of labour unrest and skilled labour on outward foreign direct investment in Taiwan, Republic of China, ROC
No full textSupplemental Material, sj-pdf-1-elr-10.1177_10353046211066932 for The role of labour unrest and skilled labour on outward foreign direct investment in Taiwan, Republic of China, ROC by Yu Cheng Lai and Santanu Sarkar in The Economic and Labour Relations Review</p
1869, Cornell University Press Podcast, Ep. 118 with Jayita Sarkar, author of Ploughshares and Swords
No full textThis episode, we speak with Jayita Sarkar, author of the new paperback and open access ebook Ploughshares and Swords: India’s Nuclear Program in the Global Cold War. Jay Sarkar is Senior Lecturer in Economic and Social History at the University of Glasgow and the Founding Director of the Global Decolonization Initiative.
We spoke to Jay about how the history of India’s first nuclear weapons test in 1974 has been overshadowed by their 1998 nuclear tests, why the conventional wisdom that India started off its nuclear program with nuclear energy first is in fact incorrect, and the strong connections between India’s nuclear program and their space program
Revisiting Prime Power RSA
No full textRecently Sarkar (DCC 2014) has proposed a new attack on small decryption exponent when RSA Modulus is of the form N = prq for r ≥ 2. This variant is known as Prime Power RSA. The work of Sarkar improves the result of May (PKC 2004) when r ≤ 5. In this paper, we improve the existing results for r = 3, 4. We also study partial key exposure attack on Prime Power RSA. Our result improves the work of May (PKC 2004) for certain parameters
Paleoenvironmental Context of Microbial Mat-Related Structures in Siliciclastic Rocks
No full textThe role of biological influences in forming carbonate rocks (e.g., Altermann et al., 2006) is almost universally accepted within geology. In contrast, many see clastic sedimentary rocks as being formed primarily through physical and chemical processes, with biological mediation of their genesis being considered as of relatively minor importance (Schieber et al., 2007a). While sedimentologists and most geologists are familiar with the importance of trace fossils within clastic deposits (cf., the seminal work of Seilacher (1964) and many others since), the role of microbial mats in terrigenous sediment accretion, and in the formation and preservation of a whole host of mat-induced (mi) and mat-related structures within clastic sedimentary rocks, is less well known
Early Cretaceous Flora from the East Coast Sedimentary Basins of India: Their Chronostratigraphic and Palaeobiogeographic Significance
No full textMacrofloristic or microfloristic zonation of Mesozoic successions, with or without independent marine–biostratigraphic age constraints, is extensively utilized in sedimentary basin analyses worldwide. However, precise macrofloral or palynological demarcation of the non-marine Mesozoic successions remains elusive in India. This uncertainty stems from several factors, including unfossiliferous deposits in critical stratigraphic intervals. However, marine fauna (ammonoids, foraminifers) have been well documented from the Mesozoic sequences of India and offer a unique correlation interface. We attempt to establish tie-points between these fauna and the macro and microflora from the East Coast sedimentary basins of India, which include the Cauvery and Palar basins of Tamilnadu, Krishna-Godavari and Pranhita-Godavari basins of Andhra Pradesh and Mahanadi Basin of Orissa. They offer considerable potential to achieve an integrated correlation to establish a higher time resolution. The early Cretaceous lithounits in these basins provide a long-ranging Neocomian-Aptian age. This work aims to provide precise ages to these formations based on biostratigraphically diagnostic taxa, especially palynomorphs and macroflora. These ages are supported by correlation with reports of coeval marine fossils such as ammonoids, foraminifers and dinoflagellates wherever available. Thus, based on the marker taxa precise ages have been assigned to the lithounits of the east coast sedimentary basins. Palaeobiogegraphic studies indicate that latitudinal control on climate was a more important factor in delineating the paleofloristic realms. The development of the angiosperms took place around the Neocomian and their diversification around Aptian-Turonian. Marine routes were established along the margins of the southern continents.Fil: Chinapa, Ch.. Andhra Loyola College; IndiaFil: Kavali, Pauline Sabina. Birbal Sahni Institute of Palaeoscience; IndiaFil: Rajanikanth, A.. Ushodaya Apartments; IndiaFil: Di Pasquo Lartigue, Maria. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; ArgentinaFil: Bernardes de Oliveira, M.E.C. Universidade de Sao Paulo; Brasi
An inventory model with reliability in an imperfect production process
No full textThe paper analyzes an economic manufacturing quantity (EMQ) model with price and advertising demand pattern in an imperfect production process under the effect of inflation. If the machine goes through a long-run process, it may shift from in-control state to out-of-control state. As a result, the system produces imperfect items. The imperfect items are reworked at a cost to make it as new. The production of imperfect quality items increases with time. To reduce the production of the imperfect items, the systems have to more reliable and the produced items depend on the reliability of the machinery system. In this direction, the author considers that the development cost, production cost, material cost are dependent on reliability parameter. Considering reliability as a decision variable, the author constructs an integrated profit function which is maximized by control theory. A numerical example along with graphical representation and sensitivity analysis are provided to illustrate the model. �� 2011 Elsevier Inc. All rights reserved
Some multivariate linear regression testing problems with additional observations
No full textAbstractIn an earlier paper, the present author (Sarkar (1979), Calcutta Statist. Assoc. Bull.28, 47–56) proposed a similar test for a mean testing problem with additional observations on a set of correlated auxiliary variables. This idea has been extended here to cover some multivariate linear regression testing problems with the same type of additional observations on a set of correlated auxiliary variables
Stereocontrol through Catalytic Enantioselective C(sp2)−H and C(sp3)−H Alkylation: From Bifunctional Organocatalysis to Iridium-Catalysis
No full textThis thesis, entitled “Stereocontrol through Catalytic Enantioselective C(sp2)−H and C(sp3)−H Alkylation: From Bifunctional Organocatalysis to Iridium-Catalysis” primarily deals with the development of various catalytic enantioselective C(sp2)− and C(sp3)− alkyl and allyl bond forming reactions.
In Chapter 1, we have described a new and general approach for the enantioselective synthesis of monosubstituted norbornenoquinones based on C(sp2)−H alkylative desymmetrization of meso norbornenoquinones. Catalyzed by a bifunctional tertiary amino(thio)urea derivative, and utilizing air-stable and inexpensive nitroalkanes as the alkylating agents, this operationally simple protocol delivers synthetically versatile benzoquinone-fused tricyclic compounds, containing at least four contiguous stereogenic centers remote from the reaction site, with excellent enantioselectivities (up to 99:1 er).
In Chapter 2, we have discussed the development of the first Ir-catalyzed enantioselective vinylogous allylic alkylation of a coumarin derivative. This Ir/phosphoramidite catalyzed reaction utilizes easily accessible linear allylic carbonates as the allylic electrophile to install an unfunctionalized allyl group. This protocol delivers synthetically versatile -allylcoumarins in exclusively branched-selective manner generally in high yields with an excellent level of enantioselectivity (up to 99:1 er).
In Chapter 3, we have shown the first enantioselective vinylogous allylic alkylation of 4-methylquinolones. This iridium-catalyzed reaction introduces an allyl group at the γ-position of 4-methyl-2-quinolones with exclusive branched selectivity and excellent level of enantioselectivity (up to 99:1 er). This in turn allows for the enantioselective synthesis of γ-allylquinolines and related nitrogenous heterocycles. This is the first application of 4-methylquinolones in an enantioselective transformation.
In addition to these reactions, we have also developed the first enantioselective α-C(sp2)–H allylic alkylation of α,β-unsaturated carbonyl compounds under cooperative Lewis base and iridium-catalysis. Using linear allylic carbonates as the allylic electrophile, this reaction, catalyzed by cinchonidine and an in situ generated cyclometalated Ir/phosphoramidite complex, makes use of the latent enolate character of the coumalate ester to introduces an allyl group at its α position in a branched-selective manner with good to excellent enantioselectivities (up to 98:2 er). The results of this investigation are detailed in Chapter 4
Ananda K. Coomaraswamy, Benoy Kumar Sarkar, and the Śukranīti
No full textThe English-raised Ananda K. Coomaraswamy, the twentieth century’s leading historian of Indian art, is well known for prizing tradition and anonymity and for upholding the position that visualization exercises were an essential part of the creative process. The first part of this article addresses the role of the English Arts and Crafts Movement and of such lesser-known figures as Sister Nivedita and Lionel de Fonseka in shaping Coomaraswamy’s views. The middle part consists of a discussion of the passages in the nineteenth-century Sanskrit treatise the Śukranīti that Coomaraswamy depended upon to support his opinions. The final part of the article is devoted to the writings of the sociologist Benoy Kumar Sarkar, author of the standard translation of the Śukranīti. As an opponent of the over-spiritualisation of Indian civilisation, he constructed a universal grammar of art. In this enterprise, he was heavily influenced by the American painter Max Weber
On acyclic edge-coloring of complete bipartite graphs
No full textAn acyclic edge-coloring of a graph is a proper edge-coloring without bichromatic (2-colored) cycles. The acyclic chromatic index of a graph G, denoted by a′(G), is the least integer k such that G admits an acyclic edge-coloring using k colors. Let Δ=Δ(G) denote the maximum degree of a vertex in a graph G. A complete bipartite graph with n vertices on each side is denoted by Kn,n. Basavaraju, Chandran and Kummini proved that a′(Kn,n)≥n+2=Δ+2 when n is odd. Basavaraju and Chandran provided an acyclic edge-coloring of Kp,p using p+2 colors and thus establishing a′(Kp,p)=p+2=Δ+2 when p is an odd prime. The main tool in their approach is perfect 1-factorization of Kp,p. Recently, following their approach, Venkateswarlu and Sarkar have shown that K2p−1,2p−1 admits an acyclic edge-coloring using 2p+1 colors which implies that a′(K2p−1,2p−1)=2p+1=Δ+2, where p is an odd prime. In this paper, we generalize this approach and present a general framework to possibly get an acyclic edge-coloring of Kn,n which possesses a perfect 1-factorization using n+2=Δ+2 colors. In this general framework, using number theoretic techniques, we show that Kp2,p2 admits an acyclic edge-coloring with p2+2 colors and thus establishing a′(Kp2,p2)=p2+2=Δ+2 when p is an odd prime
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