13,074 research outputs found
Dr. Monti Datta – Faculty Author Interview
No full textDr. Monti Datta, Assistant Professor of Political Science, discusses his forthcoming new book, Anti-Americanism and the Rise of World Opinion. Drawing from a wealth of research data, interviews and surveys of social media, this book directly examines pro- and anti-American views and asks what we can learn about the nature and impact of world opinion. By treating anti-Americanism as a case study of public opinion at work, Professor Datta reveals how we can better understand the relationship between global citizens and their political leaders, and concludes that anti-Americanism does in fact substantially impact US security, as well as its economic and political interests
Tapping Economies of Scale and Scope in Consumer Cooperation - A Case Analysis of Possible Cooperation among selected Cooperatives
No full textBecause of its narrow and negative perspective of safeguarding the interests of only poor consumers against unethical practices of the private traders, consumer cooperation in India seems to have failed, except probably in some isolated pockets. A number of social welfare functions like poverty alleviation and public distribution of essential items of consumption have been imposed on them at the cost of their basic economics. With the basic micro and macro-economic rationale for consumer cooperatives as a positive form of economic organization being lost sight of, they seem to be facing enormous problems both historically as well as currently in a era of economic liberalization. Their worries seem to have been compounded with the threat of impending competition from large private enterpriss - both domestic and foreign, which highlights the need for evolving strategies to rectivy their systemic weaknesses and tackling the competition head on. This case has attempted to document just such an initiative through a round table conference with several doyens of the consumer cooperative movement in India such as Warana Bazar and Amalsad Mandali as well as some fledging consumer cooperatives from West Bengal which are already in existence for some time or contemplating entry into this field. The roundtable conference organized in the spirit of Cooperation among Cooperatives attempted to evolve strategies to capture economies of scale and scope in order to take on the competition, as well as to facilitate dissemination of ideas and information across the country.
LMI based Stability and Stabilization of Second-order Linear Repetitive Processes
No full textThis paper develops new results on the stability and control of a class of linear repetitive processes described by a second-order matrix discrete or differential equation. These are developed by transformation of the secondorder dynamics to those of an equivalent first-order descriptor state-space model, thus avoiding the need to invert a possibly ill-conditioned leading coefficient matrix in the original model
Advanced Peer-to-Peer Networking: The P-Grid System and Its Applications
No full textThe limitations of client/server systems become evident in an Internet-scale distributed environment. Peer-to-peer (P2P) systems offer an interesting alternative to traditional client/server systems: Every node acts both as a client and a server and “pays ” its participation by providing access to its computing resources. Systems such as Napster and Gnutella have proven their practical applicability. In this article we give an overview of our P-Grid system which provides an advanced P2P infrastructure targeted at application domains beyond mere filesharing. We present the conceptual foundations and outline some of the applications we are developing at the moment.
Planar Maximum Matching: Towards a Parallel Algorithm
No full textPerfect matchings in planar graphs have been extensively studied and understood in the context of parallel complexity [P W Kastelyn, 1967; Vijay Vazirani, 1988; Meena Mahajan and Kasturi R. Varadarajan, 2000; Datta et al., 2010; Nima Anari and Vijay V. Vazirani, 2017]. However, corresponding results for maximum matchings have been elusive. We partly bridge this gap by proving:
1) An SPL upper bound for planar bipartite maximum matching search.
2) Planar maximum matching search reduces to planar maximum matching decision.
3) Planar maximum matching count reduces to planar bipartite maximum matching count and planar maximum matching decision.
The first bound improves on the known [Thanh Minh Hoang, 2010] bound of L^{C_=L} and is adaptable to any special bipartite graph class with non-zero circulation such as bounded genus graphs, K_{3,3}-free graphs and K_5-free graphs. Our bounds and reductions non-trivially combine techniques like the Gallai-Edmonds decomposition [L. Lovász and M.D. Plummer, 1986], deterministic isolation [Datta et al., 2010; Samir Datta et al., 2012; Rahul Arora et al., 2016], and the recent breakthroughs in the parallel search for planar perfect matchings [Nima Anari and Vijay V. Vazirani, 2017; Piotr Sankowski, 2018]
Miltochrista jarawa N. Singh, Volynkin, Kirti & Datta 2020, sp. nov.
No full textMiltochrista jarawa N. Singh, Volynkin, Kirti & Datta, sp. nov. (Figs 1–3, 10, 11, 14) Type material. Holotype (Figs 1, 10): male, India, [The Andaman Islands], S[outh] Andaman, Havelock, 10.I.2018, leg. H. S. Datta (NZCZSI, H10 /7114), genital preparation by H.S. Datta. Paratypes. INDIA, THE ANDAMAN & NICOBAR ISLANDS: 4 ♂, South Andaman, Chidiya Tapu, 29.XII.2017, leg. H. S. Datta (NZCZSI, H10 /7117); 2 ♂, North Andaman, Baratang, 8.I.2018, leg. H. S. Datta (NZCZSI, H10 /7115); 13 ♂, South Andaman, Havelock, 10.I.2018, leg. H. S. Datta (NZCZSI, H10 /7118); 3 ♂, South Andaman, Havelock, 11.I.2018, leg. H. S. Datta (NZCZSI, H10 /7116); 4 ♂, 5 ♀, North Andaman, Mayabunder, 6 km S, Karmatany, Rainforest, 12°50’61’’N, 092°56’06’’, 17–21.XI.2000, leg. J. P. Rudloff (MWM/ ZSM); 18 ♂, 23 ♀, M. Andaman, Tugapure, 3 km S, 12.4889°N, 94.4929°E, 14–16.VIII.2001, leg. J. P. Rudloff, Coll. Dr. R. Brechlin, slide ZSM Arct.2019-404 Volynkin (male) (MWM / ZSM); 17 ♂, 14 ♀, Middle Andaman, Tagapure, Rainforest, 12°50’72’’N, 092°49’29’’E, 22–26.XI.2000, leg. J. P. Rudloff (MWM/ ZSM); 7 ♂, 4 ♀, M. Andaman, Karmatang, 1.5 km E, 12.5072°N, 95.5610°E, 17–22.VIII.2001, leg. J. P. Rudloff, Coll. Dr. R. Brechlin (MWM / ZSM); 3 ♂, 4 ♀, M. Andaman, Rangat, 2.5 km S, 12.2761°N, 92.5623°E, 12–13.VIII.2001, leg. J. P. Rudloff, Coll. Dr. R. Brechlin (MWM/ ZSM), slide ZSM Arct. 2019-405 Volynkin (female) (MWM/ ZSM); 1 ♂, 2 ♀, Little Andaman, Huck Bay, Quarry Hilus, 10.3552°N, 93.3016°N, 26–27.VIII.2001, leg. J. P. Rudloff, Coll. Dr. R. Brechlin (MWM/ ZSM); 2 ♂, 1 ♀, S. Andaman, Port Blair, Mt. Harriet, 11.4321°N, 92.4403°E, 23–24.VIII.2001, leg. J. P. Rudloff, Coll. Dr. R. Brechlin (MWM/ ZSM). Diagnosis. Morphologically, Miltochrista jarawa, sp. nov. (Figs 1–3) is similar to M. lutara (Figs 4–9), but is distinguishable externally by its smaller size, the less sinuous antemedial line, the irregularly sinuous medial line interrupted on the vein R (that is continuous and smoothly arcuate in M. lutara), and the less zigzagged postmedial line. The male genital capsule of the new species (Figs 10, 11) is closely similar to that of M. lutara (Figs 12, 13), but differs by the more elongate valva with the more elongate and broader distal lobe, the straight dorsal margin of sacculus (in M. lutara, that bears a broad but short triangular protrusion medially), and the slightly curved distal saccular process (in M. lutara, the saccular process is conspicuously more sinuate). The vesica of M. jarawa sp. nov. is much broader than that of M. lutara, the subbasal diverticulum is broader, the distal diverticulum is much broader, and the cornutus is conspicuously longer and more robust in comparison with those structures of M. lutara. The female genitalia of the new species (Fig. 14) differ from those of M. lutara (Fig. 15) by the slightly shorter apophyses posteriores, the conspicuously shorter apophyses anteriores having rounded tips (those are apically pointed in M. lutara), the sclerotized anterior section of the ductus bursae (that is membranous in M. lutara), the broader sclerotized band of the posterior section of the corpus bursae bearing smaller denticles anteriorly, the larger right lateral protrusion of the corpus bursae, the broader anterior section of the corpus bursae with a longer area of a larger spinulose scobination having a triangular medial posterior extension (that is absent in M. lutara), and the slightly broader appendix bursae. Description. External morphology of adults . Male (Figs 1, 2). Forewing length 7.5–8 mm. Antenna ciliate. Head and thorax maize yellow. Anterior half of abdomen maize yellow, posterior half of abdomen blackish. Forewing with ground color maize yellow; costa curved opposite distal end of cell; patterning blackish; subbasal spot large, circular; subbasal area with two spots along a convex, slightly wavy antemedial line; medial line strongly sinuous medially and posteriorly, disappearing anteriorly and represented by a dot on vein R; postmedial line strongly and irregularly dentate; subterminal line represented by a series of large, variously sized spots on veins; terminal line absent; cilia concolourous with ground color. Hindwing pale yellowish, with blackish suffusion at apex. Female (Fig. 3). Forewing length 8–8.5 mm. Antenna filiform. Forewing with ground color maize yellow, pattern blackish; subbasal spot circular; subbasal area with two large spots along the convex, slightly wavy antemedial line; medial line strongly sinuous; postmedial line irregularly dentate; subterminal line represented by a series of large, various sized spots on veins; terminal line absent; cilia as ground color. Hindwing pale yellowish, with blackish suffusion at apex. Male genitalia (Figs 10, 11): Uncus narrow and elongate, slightly curved, narrowed distally and apically pointed; tuba analis moderately broad, scaphium thin and weakly sclerotized; tegumen moderately short and narrow; vinculum short, broadly v-shaped with rounded tip; juxta weakly sclerotised, trapezoid. Valva elongate, narrow, slightly curved; costa narrow, ending at end of distal lobe and lacking any processes; sacculus long and narrow, its distal process narrow, slightly curved dorsally, pointed apically; aedeagus cylindrical, with short and slightly broadened coecum; vesica with short but broad subbasal ventral diverticulum, granulated outer surface of the medial section, with large bilobate and granulate distal diverticulum and robust, blade shape distal cornutus on a narrow and elongate base. Female genitalia (Fig. 14). Papilla analis broadly rectangular with round corners, weakly setosed; apophyses elon-gate and thin, apophyses posteriores slightly narrower than apophyses anteriores; ostium bursae narrow, with membra-nous margins; ductus bursae tubular and relatively narrow, its posterior half membranous; anterior half of ductus bursae and posterior end of corpus bursae with rugose sclerotization; posterior section of corpus bursae dilated, thick-walled, with broad semiglobular lateral protrusion on its right side and short posterior protrusion on its left side; medial part of posterior section of corpus bursae bearing long, narrow, strongly curved and heavily sclerotized band covered with numerous short but robust spines; anterior section of corpus bursae sac-like, densely covered in numerous spinules on broad bases, this area of scobination protruding to medial part of corpus bursae; appendix bursae short but broad, thick-walled, situated on left side of posterior section of corpus bursae. Distribution. The new species is known from the Andaman Islands only. Etymology. The Jarawa people are a nation living in Middle and South Andaman Islands. The specific name is a noun in nominative case.Published as part of Singh, Navneet, Volynkin, Anton V., Kirti, Jagbir Singh & Datta, Harvinder Singh, 2020, Miltochrista jarawa (Lepidoptera, Erebidae, Arctiinae, Lithosiini), a new species from the Andaman Islands, India, pp. 445-450 in Zootaxa 4895 (3) on pages 446-447, DOI: 10.11646/zootaxa.4895.3.10, http://zenodo.org/record/432669
Dynamic Meta-Theorems for Distance and Matching
No full textReachability, distance, and matching are some of the most fundamental graph problems that have been of particular interest in dynamic complexity theory in recent years [Samir Datta et al., 2018; Samir Datta et al., 2018; Samir Datta et al., 2020]. Reachability can be maintained with first-order update formulas, or equivalently in DynFO in general graphs with n nodes [Samir Datta et al., 2018], even under O(log(n)/log log(n)) changes per step [Samir Datta et al., 2018]. In the context of how large the number of changes can be handled, it has recently been shown [Samir Datta et al., 2020] that under a polylogarithmic number of changes, reachability is in DynFOpar in planar, bounded treewidth, and related graph classes - in fact in any graph where small non-zero circulation weights can be computed in NC.
We continue this line of investigation and extend the meta-theorem for reachability to distance and bipartite maximum matching with the same bounds. These are amongst the most general classes of graphs known where we can maintain these problems deterministically without using a majority quantifier and even maintain witnesses. For the bipartite matching result, modifying the approach from [Stephen A. Fenner et al., 2016], we convert the static non-zero circulation weights to dynamic matching-isolating weights.
While reachability is in DynFOar under O(log(n)/log log(n)) changes, no such bound is known for either distance or matching in any non-trivial class of graphs under non-constant changes. We show that, in the same classes of graphs as before, bipartite maximum matching is in DynFOar under O(log(n)/log log(n)) changes per step. En route to showing this we prove that the rank of a matrix can be maintained in DynFOar, also under O(log(n)/log log(n)) entry changes, improving upon the previous O(1) bound [Samir Datta et al., 2018]. This implies a similar extension for the non-uniform DynFO bound for maximum matching in general graphs and an alternate algorithm for maintaining reachability under O(log(n)/log log(n)) changes [Samir Datta et al., 2018]
Aspek Sosiologi Pengarang Pada Struktur Batin Puisi Watashi Ga Ichiban Kirei Datta Toki
No full textAbstrak
Penelitian ini bertujuan untuk mengetahui hubungan aspek sosiologi pengarang dengan struktur batin puisi Watashi ga Ichiban Kirei Datta Toki Karya Ibaragi Noriko. Penelitian ini menggunakan metode deskriptif analisis, dengan pendekatan sosiologi pengarang oleh Wellek dan Warren (1994). Penelitian ini dilakukan dengan mendeskripsikan objek penelitian kemudian menganalisis hubungan aspek sosiologi pengarang dengan struktur batin puisi. Hasil penelitian ini adalah terdapat hubungan aspek sosiologi pengarang dengan struktur batin puisi, yaitu pada aspek status sosial pengarang dengan tema dan aspek latar belakang sosial budaya pengarang dengan amanat. Dari hasil penelitian tersebut, dapat diketahui bahwa puisi Watashi ga Ichiban Kirei Datta Toki ditulis oleh Ibaragi Noriko berdasarkan peristiwa yang terjadi dalam hidupnya.
Kata Kunci : puisi, struktur batin, sosiologi pengarang
Abstract
This research aims to determine the relationship of the sociological aspects of the author with the inner structure of the poetry Watashi ga Ichiban Kirei Datta Toki by Ibaragi Noriko. This research uses descriptive analysis method, with the author\u27s sociology approach by Wellek and Warren (1994). This research was conducted by describing the object of research then analyzing the relationship of the sociological aspects of the author with the inner structure of the poetry. The result of this research is that there is a relationship between the sociological aspects of the author with the inner structure of poetry, namely on the aspect of the author\u27s social status with the theme and aspect of the author\u27s socio-cultural background with the mandate. From the results of this research, it can be seen that the poetry Watashi ga Ichiban Kirei Datta Toki was written by Ibaragi Noriko based on events that occurred in his life.
Keywords : poetry, inner structure, author\u27s sociolog
Cyana conclusa subsp. nicobara N. Singh, Volynkin, Kirti & Datta 2020, ssp. nov.
No full textCyana conclusa nicobara N. Singh, Volynkin, Kirti & Datta, ssp. nov. (Figs 156–160, 233, 287) Type material. Holotype (Figs 158, 233): ♂, Campbell Bay, Great Nicobar, 27.XI.2016, leg. H.S. Datta (Coll. NZCZSI). Paratypes: THE ANDAMAN AND NICOBAR ISLANDS: 6 ♂, Great Nicobar, Campbell bay, 27.XI.2016, leg. H.S. Datta (Coll. NZCZSI); 1 ♂, Gobind Nagar, 25.XI.2016, leg. H.S. Datta (Coll. NZCZSI); 2 ♂, Great Nicobar, Galathea N. P, 3.XI.2018, leg. K.C. Gopi & Party (Coll. NZCZSI); 15 ♂, Great Nicobar, Galathea N. P, 7.XI.2018, leg. K.C. Gopi & Party (Coll. NZCZSI); 1 ♂, Great Nicobar, Gobind Nagar, 5.XI.2018, leg. K.C. Gopi & Party (Coll. NZCZSI); 6 ♂, Great Nicobar, East West Road, check post, 6.XI.2018 (Coll. K.C. Gopi & Party); 1 ♂, Great Nicobar, Chingan basti, 9.XI.2018, leg. K.C. Gopi & Party (Coll. NZCZSI); 11 ♂, 5 ♀, Great Nicobar, Laxmi Nagar, 11.XI.2018, leg. K.C. Gopi & Party (Coll. NZCZSI); 6 ♂, Great Nicobar, Sastri Nagar, 11.XI.2018, leg. K.C. Gopi & Party (Coll. NZCZSI); 1 ♀, Great Nicobar, Joginder Nagar, 11.XI.2018, leg. K.C. Gopi & Party (Coll. NZCZSI); 2 ♀, Great Nicobar, 4 km South of Vijay Nagar, 12.XI.2018, leg. K.C. Gopi & Party (Coll. NZC- ZSI); 4 ♂, Great Nicobar, Steel bridge, E. W Road, 13.XI.2018, leg. K.C. Gopi & Party (Coll. NZCZSI); 7 ♂, Great Nicobar, Bird Watching point, 14.XI.2018, leg. K.C. Gopi & Party (Coll. NZCZSI); 5 ♂, Great Nicobar, Gobind Nagar, 18.XI.2018, leg. K.C. Gopi & Party (Coll. NZCZSI); 1 ♀, Nicobar Is., II–VIII.[19]04, G. Rogers, 1905–51., slide NHMUK010315747 Volynkin (Coll. NHMUK). Etymology. The subspecfic epithet is dedicated the Nicobar Islands where the new subspecies is distributed. Diagnosis. Forewing length is 16 mm in males and 18.5 mm in females. Cyana conclusa nicobara differs externally from the nominate subspecies by its crimson forewing pattern with narrower transverse lines, whereas in C. c. conclusa the transverse lines are much broader and the pattern is orange or red orange. In the male genitalia, C. c. nicobara has the slightly shorter distal section of valva, the slightly longer ampulla and the slightly shorter distal saccular processes. The female genitalia of C. c. nicobara differ from those of C. c. conclusa by the slightly broader ductus bursae and the smaller medial signum bursae. Distribution. India (the Nicobar Islands) (Hampson 1914, as selangorica; Arora 1983, as ‘ C. javanica sumatrensis (Druce) ’.Published as part of Singh, Navneet, Volynkin, Anton V., Kirti, Jagbir Singh, Datta, Harvinder Singh & Ivanova, Maria S., 2020, A review of the genus Cyana Walker, 1854 from India, with descriptions of five new species and three new subspecies (Lepidoptera: Erebidae: Arctiinae: Lithosiini), pp. 1-93 in Zootaxa 4738 (1) on pages 57-91, DOI: 10.11646/zootaxa.4738.1.1, http://zenodo.org/record/367243
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