1,362,749 research outputs found
Replication data for: Can Mobile-Linked Bank Accounts Bolster Savings? Evidence from a Randomized Controlled Trial in Sri Lanka
No full textde Mel, Suresh, McIntosh, Craig, Sheth, Ketki, and Woodruff, Christopher, (2022) “Can Mobile-Linked Bank Accounts Bolster Savings? Evidence from a Randomized Controlled Trial in Sri Lanka.” Review of Economics and Statistics 104:2, 306–320
KPIX TV interviews Saint Mary\u27s Arnav Sheth about Bitcoin\u27s future
No full textKPIX-TV / CBS-5 interviewed Arnav Sheth, a Saint Mary\u27s assistant professor of finance, about the future of Bitcoin after the website of Mt. Gox, the world\u27s largest exchange for the virtual currency, abruptly stopped trading on Tuesday, Feb 25. The digital currency uses peer-to-peer technology for a monetary system that operates outside of governments or banks. Over the past four years. the alternative money, which is reported to be worth more than $500 per coin, has garnered acceptance as a means to pay for goods and services worldwide. Sheth discussed Bitcoin\u27s growing recognition as a real currency by the public and the possible implications for the digital dollar\u27s viability going forward. Sheth teaches finance in the College\u27s Graduate Business program and his academic research includes risk-taking and risk management in business.
Watch the KPIX-TV report
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Amit Sheth and Valerie Shalin: Semantic analysis of social media and new Big Data to understanding COVID-19's impact on mental health, addiction, and gender-based violence
No full textThis presentation was made by Amit Sheth, University of South Carolina, and Valerie Shalin, Wright State University. The presentation's title is: "Semantic analysis of social media and new Big Data to understanding COVID-19's impact on mental health, addiction, and gender-based violence."
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Every month, the COVID Information Commons Team (along with the Northeast Big Data Innovation Hub) brings together a group of researchers studying wide-ranging aspects of the current pandemic, to share their research and answer questions from our community. The events showcase scientists' ongoing efforts in the fight against COVID-19, including opportunities for collaboration
Copelatus deccanensis Sheth & Ghate & Hájek 2018, sp. nov.
No full textCopelatus deccanensis sp. nov. (Figs 1–2, 17–18) Type locality. India, Maharashtra, Pune district, ca. 4 km SSW of Lonavala village, Bhushi dam, 18°43.2-4′N, 73°23.7-24.0′E, ca. 640 m a.s.l. Type material. Holotype ♂ (NMPC), labelled: "INDIA W, 24.–28.ix.2005, / Maharashtra st., 4 km S of / Lonavala, Bhushi dam env., / 500 m, J.Bezděk leg. [printed] // HOLOTYPE / COPELATUS / deccanensis sp. nov. / S. Sheth et al. det. 2016 [red label, printed]". Paratypes: 14♂, 13♀, same label data as holotype (BMNH, JSCL, NHMW, NMPC, UWPC, ZSMG); 10♂, 10♀, labelled: "INDIA occ. Maharashtra st. / Bhushi Dam env. 24–28.ix. / 4 km S of Lonavala 2005 / leg.F.&L.Kantner 500 m [printed]" (NMPC, SMNS); 1♂, 1♀, labelled: "INDIA W, 7.–11.x.2005 / Maharashtra state, / 40 km W of Pune, / Mulshi env. / J. Bezděk leg. [printed]" (NMPC); 1♂, 2♀, labelled: "INDIA, Maharashtra / Pune Distr., Mulshi at / Mulshi Lake, 7–8 X 2005 / at light, leg. L. Borowiec [printed]" (NMPC); 3♀, labelled: "INDIA occ., 7–11.x.2005 / Maharashtra state / MULSHI env.F.Kantner leg. / 40 km W of Pune [printed]" (SMNS); 1♀, labelled: "India / Maharashtra st., / Tamhini, Kalubai Mandir / 18°27′38.95″N, 73°24′41.89″E, 570m / 27.VIII.2013 / coll. S. D. Sheth [printed]" (HVGC); 4♂, 7♀, labelled: "India / Maharashtra st., / Tamhini, 18°26′41.50″N, 73°25′39.72″E, 625m / 29.X.2014 / coll. S. D. Sheth [printed]" (HVGC); 2♂, 1♀, labelled: "INDIA, Maharashtra / TAMHINI / 18°23′54.6″N 73°23′47.3″E / 29.x.2014 [printed]" (HVGC); 1♂, 1♀, labelled: "India / Maharashtra st., / Tamhini, Dongerwadi stream / 18°27′38.95″N, 73°24′41.89″E, 570m / 1.X.2015 / coll. S. D. Sheth [printed]" (HVGC); 7♂, 6♀, labelled: "India / Maharashtra st., / Harishchandragad fort / 19°23′26.37″N, 73°46′15.09″E, 1213m / 20.X.2013 / S.D. Sheth leg. [printed]" (HVGC, NMPC); 4♂, 5♀, labelled: "India / Maharashtra st., / Alanggad fort / 19°34′59.88″N, 73°39′39.26″E, 1175m / 9.I.2014 / coll. N. Modak [printed]" (HVGC); 2♂, 2♀, labelled: "India / Maharashtra st., / Madangad fort / 19°35′23.48″N, 73°38′57.63″E, 1151m / 10.I.2014 / coll. N. Modak [printed]" (HVGC); Each paratype provided with the respective red printed label. Description of male holotype. Habitus (Fig. 1) elongate oblong oval, nearly parallel sided with continuous outline, broadest in 1/3 of elytral length, slightly convex. Dorsal surface shiny. Coloration. Head rufous, darker (almost blackish) around eyes and medially between eyes, lighter on clypeus, labrum and medially on vertex. Pronotum rufous, infuscate on disc, lighter laterally. Elytra testaceous, somewhat darker in striae; numerous dark punctures present along basal and apical parts of elytral striae 1–5, and along sides of elytra. Ventral part rufous; abdomen dark. Appendages testaceous. Head. Moderately broad, ca. 0.7× width of pronotum, transversely elliptical. Labrum emarginate medially. Anterior margin of clypeus slightly concave. Antennae with antennomeres slender, club-shaped, antennomere I longest. Eyes emarginate anterolaterally. Reticulation consisting of fine, well impressed isodiametric polygonal meshes. Numerous short, deep and isolated strioles present between eyes. Punctation double; several large setigerous punctures present in fronto-clypeal depressions, frontal depressions at level of anterior margin of eyes, and in depressions along inner margin of eyes; very fine and sparsely distributed punctures placed among meshes of microreticulation. Pronotum. Transverse, broadest at posterior angles. Anterior angles acute, posterior angles rectangular. Sides slightly and evenly curved, with lateral beading very thin and indistinct. Anterior margin straight, posterior margin nearly straight with only indistinct sinuation medially. Reticulation similar to that of head, but slightly less impressed. Disc of pronotum with numerous deep irregular strioles of variable length. Punctation double; row of coarse setigerous punctures presents along anterior margin, basal margin (except medially), and laterally close to sides; fine punctures placed among meshes of microreticulation, denser than on head. Scutellar shield broadly triangular. Elytra. Elytral striation consisting of twelve discal striae: stria 1 shorter, ending at ca. 4/5 of elytral length; stria 2 longest; striae 7, 9 and 12 shorter apically, ending at ca. 3/4–4/5 of elytral length; stria 11 shortest, beginning more posteriorly than other striae and present only in basal third of elytral length. Surface reticulation consisting of fine, shallowly impressed isodiametric polygonal meshes. Punctation double; few large setigerous punctures present along elytral striae, but predominantly along lateral margin of elytra; very fine, sparsely distributed punctures placed among meshes of microreticulation, similar to those on pronotum. Legs. Protibia modified, angled near base, distinctly broadened anteriorly, club shaped. Pro- and mesotarsomeres 1–3 distinctly broadened, ventrally with adhesive setae. Ventral side. Prosternum sinuate anteriorly, obtusely keeled medially. Prosternal process shortly lanceolate, in cross-section convex, apex obtuse; process distinctly bordered laterally; reticulation almost effaced except some superficial meshes apically. Metaventrite with microsculpture consisting of polygonal meshes; numerous short, oblique, deep strioles present laterally but absent medially; lateral parts of metaventrite ('metasternal wings') tongue-shaped, slender. Metacoxal lines well impressed, nearly complete—absent only close to metaventrite. Metacoxal plates covered with long, deep longitudinal strioles; reticulation consisting of extremely elongate, longitudinal polygonal meshes. Metacoxal processes rounded and incised at posterior margin. Abdominal ventrites I–II with longitudinal strioles; ventrites III–IV with oblique strioles laterally. Tuft of setae present antero-medially on ventrites III–V; ventrite VI with setigerous punctures laterally on either side. Abdominal reticulation consisting of elongate polygonal meshes, longitudinal on ventrites I–II, oblique on ventrite III and transverse on ventrites IV– VI. Punctation consisting of fine, sparsely distributed punctures. Male genitalia. Median lobe in lateral aspect broad in basal 3/4, then narrowing to pointed apex; almost evenly curved except at base (Fig. 17). A fold present till subapical region. Parameres 'D'-shaped, apex very narrow and long; apical lobe long (Fig. 18). Female. Females do not differ in external morphology from male except for nearly straight, apically less broadened protibia, and slender pro- and mesotarsi without adhesive setae. Additionally, we have studied two females with elytral stria 11 absent, thus they have only eleven striae on each elytron. Variability. The specimens of the type series vary in coloration, especially infuscation of head and pronotum (from rufous to nearly black) and elytra (from testaceous to reddish brown). A form with longitudinal striolation on elytra occurs in both males and females of this species (Fig. 2): strioles long, often confluent, distinctly less impressed than striae; present between all striae, but missing in apical fourth of elytral length. Striolate form differs from the typical specimens also in strioles on the pronotum, which are usually longer and denser than those in nonstriolate form. Measurements (N = 31). TL: 5.3–6.9 mm (holotype: 6.1 mm); Tl-h: 4.8–6.4 mm (holotype: 4.9 mm); MW: 2.0–3.0 mm (holotype: 2.7 mm). Differential diagnosis. Based on the presence of 11–12 dorsal elytral striae and absent submarginal stria, the new species can be classified within the Copelatus nigrolineatus species group sensu Guéorguiev (1968). This group so far contains only five species (Nilsson & Hájek 2018): C. flavicans Guignot, 1952 and C. luctuosus Guignot, 1939 occurring in the Neotropical region, C. nigrolineatus Sharp, 1882 from Australia, C. zimmermanni Gschwendtner, 1934 distributed in China and Japan, and C. schuhi Hendrich & Balke, 1998 known so far only from Maharashtra (India). The new species differs from C. schuhi by its large size, 5.3–6.9 mm (body length ranges between 4.0– 4.5 in C. schuhi); elytral striae extending apically (elytral striae are missing the in apical third in C. schuhi); pale basal transverse elytral band absent (broad and distinct pale band present in C. schuhi); and the different shape of the median lobe, which is in lateral view, broad in the basal 3/4, then narrowing to a pointed apex (Fig. 17), and almost evenly curved except at the base (median lobe of C. schuhi is unevenly curved in lateral view, its outer margin is slightly sinuate; subapically broad; abruptly pointed at apex, see Fig. 19). Etymology. The new species is named after the Deccan plateau, a large volcanic basalt plateau in southern India, which covers most of the territory of Maharashtra state. Mani (1974) referred to Maharashtra as the 'Deccan Lavas Country'. The specific epithet is an adjective in the nominative case. Collecting circumstances. This species appears to inhabit isolated, clean water bodies. The specimens were collected in a side pool of a stream (Fig. 40), an ephemeral puddle with decaying leaves (Fig. 41) and muddy substrate, in remnant pools with pebbles as substrate formed in drying streams (Fig. 39); also in nearly permanent man-made tanks and small puddles (Fig. 42) on basaltic rocks. The physicochemical parameters of water bodies range as follows: pH: 6.2 to 9.0, temperature 18 to 25 0C and salinity 23 to 115 ppm. Distribution. The species was found in Pune, Nashik, Ahemadnagar districts of Maharashtra (Fig. 45). Collected within an altitude range of 500–1,215 m a.s.l.Published as part of Sheth, Sayali D., Ghate, Hemant V. & Hájek, Jiří, 2018, Copelatus Erichson, 1832 from Maharashtra, India, with description of three new species and notes on other taxa of the genus (Coleoptera: Dytiscidae: Copelatinae), pp. 235-260 in Zootaxa 4459 (2) on pages 237-243, DOI: 10.11646/zootaxa.4459.2.2, http://zenodo.org/record/145854
Constraints on halo formation from cross-correlations with correlated Variables
No full textCross-correlations between biased tracers and the dark matter field encode information about the physical variables that characterize these tracers. However, if the physical variables of interest are correlated with one another, then extracting this information is not as straightforward as one might naively have thought.We show how to exploit these correlations so as to estimate scale-independent bias factors of all orders in a model-independent way. We also show that failure to account for this will lead to incorrect conclusions about which variables matter and which do not. Moreover, accounting for this allows one to use the scale dependence of bias to constrain the physics of halo formation; to date, the argument has been phrased the other way around. We illustrate by showing that the scale dependence of linear and non-linear bias, measured on non-linear scales, can be used to provide consistent estimates of how the critical density for halo formation depends on halo mass. Our methods work even when the bias is non-local and stochastic, such as when, in addition to the spherically averaged density field and its derivatives, the quadrupolar shear field also matters for halo formation. In such models, the non-local bias factors are closely related to the more familiar local non-linear bias factors, which are much easier to measure. Our analysis emphasizes the fact that biased tracers are biased because they do not sample fields (density, velocity, shear, etc.) at all positions in space in the same way as the dark matter does
Performance versus cost analysis of WDM networks with dynamic traffic grooming capabilities
No full textThe objective of this paper is to compare three well-known WDM network architectures (first-generation, single-hop, and multi-hop) when they are deployed to accommodate dynamic end-to-end connections with sub-wavelength transmission rates. The comparison is based on a performance figure that is uniquely defined to take into account the various architecture costs determined by the cost of the deployed network elements. The defined performance figure permits also to compare the three architectures for all possible line-to-node cost ratio value
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Amit Sheth et Valerie Shalin: Analyse sémantique des médias sociaux et des nouveaux Big Data pour comprendre l'impact du COVID-19 sur la santé mentale, la toxicomanie et la violence sexiste
No full textCette présentation a été faite par Amit Sheth et Valerie Shalin. Le titre de la présentation est: “Analyse sémantique des médias sociaux et des nouveaux Big Data pour comprendre l'impact du COVID-19 sur la santé mentale, la toxicomanie et la violence sexiste.”
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Chaque mois, l'équipe COVID Information Commons (avec le Northeast Big Data Innovation Hub) rassemble un groupe de chercheurs étudiant de nombreux aspects de la pandémie actuelle, pour partager leurs recherches et répondre aux questions de notre communauté. Ces événements mettent en valeur les efforts continus des scientifiques dans la lutte contre le COVID-19, notamment les opportunités de collaboration
Copelatus maushomi Sheth & Ghate & Hájek 2018
No full textCopelatus maushomi s p. nov. (Figs 4, 21–22) Type locality. India, Maharashtra, 120 km NE of Mumbai, Igatpuri environment, 19°42.3′N, 73°33.1′E, 600 m a.s.l. Type material. Holotype ♂ (NMPC), labelled: "INDIA occ. centr. / MAHARASHTRA prov. / 120 km NE of MUMBAI / IGATPURI env., 600m [printed] // INDIA 2002 Expedition / 19°42.17′N, 73°33.06′E / 1. – 12. VIII. 2002 / P.Šípek & M.Fikáček leg. [printed] // HOLOTYPE / COPELATUS / maushomi sp. nov. / S. Sheth et al. det. 2016 [red label, printed]" (NMPC). Paratypes: 4♂, 1♀ same data as holotype (LHCM, NMPC, ZSMG). Each paratype is provided with the respective red printed label. Description of male holotype. Habitus (Fig. 4) elongate oblong oval, nearly parallel sided; outline not continuous as pronotal posterior corners protrude; broadest in basal third of pronotum; very slightly convex. Dorsal surface matt due to dense striolation. Coloration. Dorsally almost uniformly testaceous; head slightly darker than pronotum and elytra, infuscate posterior to eyes; pronotum indistinctly infuscate on disc; elytra laterally and apically somewhat paler; appendages testaceous. Ventral part testaceous to brownish. Head. Moderately broad, ca. 0.6× width of pronotum, almost semicircular. Labrum medially emarginate. Anterior margin of clypeus slightly concave. Antennae with antennomeres slender, club-shaped, antennomere I longest. Eyes emarginate anterolaterally, small, eye width only ca. 0.1× width of head. Reticulation consisting of well impressed polygonal meshes; meshes slightly larger in anterior region. Rather long, longitudinal or oblique strioles present between eyes and on vertex. Punctation double; several large setigerous punctures present in fronto-clypeal depressions, frontal depressions at level of anterior margin of eyes, and in depressions along inner margin of eyes; very fine and sparsely distributed punctures placed among meshes of microreticulation, punctures denser posteriorly. Pronotum. Transverse, broadest in basal third. Anterior angles acute, posterior angles rectangular. Sides largely and evenly curved, with lateral beading very thin and indistinct. Anterior margin straight, posterior margin sinuate. Surface reticulation consisting of polygonal meshes, similar to that of head, but slightly less impressed. Disc of pronotum completely longitudinally striolate; strioles mostly long, well impressed, rarely confluent; few short, shallow strioles present between long strioles. Punctation double; row of coarse setigerous punctures present along anterior margin, basal margin (except medially), and laterally close to sides; fine punctures placed among meshes of microreticulation. Scutellar shield broadly triangular. Elytra. Elytral striation consisting of nine complete shallow discal striae; striae almost imperceptible due to dense striolation of elytra. Strioles very long, rarely confluent. Surface reticulation consisting of fine, shallowly impressed isodiametric polygonal meshes. Punctation consisting of setigerous punctures only, few punctures present along elytral striae, but predominantly apically and along lateral margin of elytra; fine punctures, due to dense striolation not perceptible. Legs. Protibia modified, angled near base, distinctly broadened anteriorly, club shaped. Pro- and mesotarsomeres 1–3 distinctly broadened, with four rows of adhesive setae on their ventral side. Ventral side. Prosternum sinuate anteriorly, obtusely keeled medially. Prosternal process shortly lanceolate, in cross-section convex, apex rounded; distinctly bordered laterally; reticulation or punctation absent. Metaventrite with microsculpture consisting of polygonal meshes; punctation imperceptible. Lateral parts of metaventrite ('metasternal wings') tongue-shaped, slender. Metacoxal lines well impressed, incomplete—absent in anterior fourth. Metacoxal plates covered with deep, longitudinal or oblique strioles; reticulation consisting of elongate, longitudinal polygonal meshes. Punctation on metacoxae absent. Metacoxal processes rounded and incised at posterior margin. Abdominal ventrites I–II with longitudinal strioles; ventrites III–IV with oblique strioles laterally, absent medially. Abdominal reticulation consisting of elongate polygonal meshes, longitudinal on ventrites I–II, oblique on ventrite III and transverse on ventrites IV–VI. Punctation consisting of fine punctures medially, and larger and deeper punctures laterally. Male genitalia. Median lobe in lateral aspect almost evenly curved; narrowing from base to pointed apex; broadest in middle (Fig. 21). A fold present till subapical region. Parameres more or less 'D'-shaped, slightly sinuate on outer margin, apex very narrow and long; apical lobe club-shaped (Fig. 22). Female. Females do not differ in external morphology from male except for nearly straight, apically less broadened protibia, and slender pro- and mesotarsi without adhesive setae. Variability. All specimens of the type series are rather uniform and vary only in extent of infuscation of head and pronotum. Measurements (N=5). TL: 4.6–5.0 mm (holotype: 4.8 mm); Tl-h: 4.2–4.5 mm (holotype: 4.4 mm); MW: 2.0– 2.1 mm (holotype: 2.0 mm). Differential diagnosis. Based on the presence of nine dorsal striae on the elytra, the new species can be tentatively classified within the Copelatus consors species group sensu Guignot (1961). This group so far contains eighteen species: 11 in the Afrotropical and seven in the Nearctic region (Nilsson & Hájek 2018). Copelatus maushomi sp. nov. does not seem to be related to any species of the C. consors group. With small eyes, pronotum distinctly broader than elytra, and elytra with dense striolation, the new species has very unique appearance within all known Copelatus species. The shape of the male median lobe suggests that the species may be related to Indian species of the C. nigrolineatus group— C. deccanensis sp. nov. and C. schuhi. Etymology. The species is named after the 'maushom'—a local name for the monsoon, indicating that the specimens were collected at the beginning of the monsoon season. The name is a noun in the genitive case. Collecting circumstances. The specimens were collected in small deep pools in a stony stream below a table mountain (Fig. 44). The place was visited at the beginning of the monsoon. Sudden large amount of water could have brought the specimens to the normal stream from less accessible habitat, e.g. wet gravels on the stream bottom or other interstitial water habitats (M. Fikáček, pers. comm. 2017). Distribution. The species is so far known only from the type locality (Fig. 45).Published as part of Sheth, Sayali D., Ghate, Hemant V. & Hájek, Jiří, 2018, Copelatus Erichson, 1832 from Maharashtra, India, with description of three new species and notes on other taxa of the genus (Coleoptera: Dytiscidae: Copelatinae), pp. 235-260 in Zootaxa 4459 (2) on pages 244-245, DOI: 10.11646/zootaxa.4459.2.2, http://zenodo.org/record/145854
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
From Semantic Search & Integration to Analytics
No full textSemantics is seen as the key ingredient in the next phase of the Web infrastructure as well as the next generation of enterprise content management. Ontology is the centerpiece of the most prevalent semantic technologies and provides the basis of representing, acquiring, and utilizing knowledge. With the availability of several commercial products and many research tools, specifications and increasing adoption of Semantic Web standards such as RDF for metadata and OWL for ontology representation, ontology-driven techniques and systems have already enabled a new generation of industry strength semantic applications. In particular, Semagix’s Freedom has powered applications in leading verticals such as, financial services, government & intelligence, pharmaceuticals, and media & entertainment. In this paper, we portray some of the requirements of high-end enterprise applications requiring search to integration, and more advanced analytical capabilities, discuss the enterprise scale capabilities expected of a semantic technology, and how Semagix has put an ontology-driven approach to use
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