808 research outputs found
Do Market Capitalisation and Stocks Traded Converge? New Global Evidence
In this paper, we examine convergence of stocks markets. Our empirical exercise is based on 12 different panels, including a full panel consisting of 120 countries and disaggregated panels, such as high income, middle income, low income, OECD, CSI, and developing countries. In addition, we used regional panels, such as those representing the Arab States, East Asia and the Pacific, South Asia, Latin America and the Caribbean, and Sub-Saharan Africa. Our main finding is that, based on the conditional convergence model, convergence of stock market capitalization and stocks traded is found for five panels, namely the all country panel, the high and low income panels, the OECD panel, and the Sub-Saharan African panel. The speed of convergence is high, in most cases between 20-30 per cent.G15.
Investigating the Relationship between Health and Economic Growth: Empirical Evidence from a Panel of 5 Asian Countries
In this paper, we investigate the relationship between health and economic growth through including investment, exports, imports, and research and development (R&D), for 5 Asian countries using panel unit root, panel cointegration with structural breaks and panel long-run estimator for the period 1974-2007. We model this relationship within the production function framework, and unravel two important results. First, we find that in three variants of the growth model, variables share a long-run relationship; that is, they are cointegrated. Second, we find that in the long-run, while health, investment, exports, and R&D have contributed positively to economic growth, imports have had a statistically significant negative effect while education has had an insignificant effect. We draw important policy implications from these findings.Health; Economic Growth; Panel Unit Root; Panel Cointegration.
Comparative degradation analysis of accelerated-aged and field-aged crystalline silicon photovoltaic modules under Indian subtropical climatic conditions
publishedVersio
Comparative analysis of quantitative dermatoglyphic markers in schizophrenia patients and controls attending a superspeciality hospital in West Bengal
Background: Schizophrenia is a psychiatric disorder encompassing multiple etiological variables. Association of dermatoglyphic traits with schizophrenia has been observed and reported. This study was undertaken to evaluate epidermal ridge patterns in patients of schizophrenia as compared to healthy controls attending a superspeciality hospital in West Bengal. Establishing dermatoglyphic parameters as biomarkers for early diagnosis will ensure prompt intervention and a greater scope of recovery in schizophrenia and thus promote a better quality of life for the individual as well as lower the burden of disease for the society.Methods: Quantitative dermatoglyphic parameters namely, total finger ridge count (TFRC), total A-B ridge count (TABRC) and ATD angle of 50 schizophrenia patients were compared to 50 age and gender matched healthy controls.Results: TFRC and TABRC were found to be decreased in schizophrenia, while ATD angle was increased in schizophrenia as compared to the control group.Conclusions: This study found a significant association between dermatoglyphic pattern anomalies and the development of schizophrenia. This may offer a scope of primordial prevention of schizophrenia in future, utilising dermatoglyphics as an investigative tool
Pregnancy outcome of external cephalic version in singleton pregnancy with breech presentation at term
Background: Breech delivery is associated with poor perinatal outcomes irrespective of the route of delivery. External cephalic version can be a useful tool in management of breech presentation at term by converting it to a cephalic presentation. A study was conducted to evaluate maternal and neonatal outcome of external cephalic version in singleton pregnancies with breech presentation in third trimester.Methods: A prospective observational study was carried out at a tertiary care hospital over a period of 2 years. This study included a total of 65 uncomplicated cases of breech presentation who fulfilled the inclusion criteria. External cephalic version was carried out after 36 weeks of period of gestation in primigravida and after 37 weeks in multigravida women. These patients were followed up till delivery and data was collected and analysed regarding the mode of delivery, maternal and fetal outcome.Results: External cephalic version was successful in 41 patients with a success rate of 63%. Out of them, vaginal delivery could be achieved in 31 cases (75.6%) and LSCS was done for rest of the 10 cases. The success rate was higher in multigravida ladies compared to primigravida ladies. No major procedure related adverse event was noticed in our study.Conclusions: External cephalic version is a very safe and easy procedure which can reduce the rate of cesarean delivery in singleton pregnancies with breech presentation. The results of this study are in favor of wider practice of this procedure in selected cases
Circumventing the challenges in the choice of the non-conformal coupling function in inflationary magnetogenesis
[Abridged] As is well known, in order to generate magnetic fields of observed
amplitudes during inflation, the conformal invariance of the electromagnetic
field has to be broken by coupling it either to the inflaton or to the scalar
curvature. Couplings to scalar curvature pose certain challenges even in slow
roll inflation and it seems desirable to consider couplings to the inflaton. It
can be shown that, in slow roll inflation, to generate nearly scale invariant
magnetic fields of adequate strengths, the non-conformal coupling to the
inflaton has to be chosen specifically depending on the inflationary model at
hand. In a recent work, we had found that, when there arise sharp departures
from slow roll inflation leading to strong features in the scalar power
spectra, there inevitably arise sharp features in the spectra of the
electromagnetic fields, unless the non-conformal coupling functions are
extremely fine tuned. In particular, we had found that, if there occurs an
epoch of ultra slow roll inflation, then the strength of the magnetic field
over large scales can be severely suppressed. In this work, we examine whether
these challenges can be circumvented in models of inflation involving two
fields. We show that the presence of the additional scalar field allows us to
construct coupling functions that lead to magnetic fields of required strengths
even when there arise intermediate epochs of ultra slow roll inflation.
However, we find that the features in the spectra of the magnetic fields that
are induced due to the departures from slow roll inflation cannot be completely
ironed out. We make use of the code MagCAMB to calculate the effects of the
magnetic fields on the anisotropies in the cosmic microwave background and
investigate if the spectra with features are broadly consistent with the
current constraints.Comment: v1: 21 pages, 8 figures; v2: 21 pages, 8 figures, discussions and
references added, to appear in Physical Review
CIRCUMSCRIPTION OF FULBRIGHTIELLA GEN. NOV. AND SHERWOODIELLA GEN. NOV., TWO NOVEL GENERA IN THE CALOTRICHACEAE (NOSTOCALES, CYANOBACTERIA)
Three novel strains in Calotrichaceae from tropical habitats were isolated and characterized with regard to their morphology, phylogenetic placement, and secondary structures of conserved domains in the 16S‐23S internal transcribed spacer (ITS). The strains fell into two clades formerly identified as Calothrix from freshwater and brackish habitats. Based on both morphology and ecology, they differed from the type species of Calothrix, C. confervicola, which is marine, has wide trichomes with short cells, and narrows abruptly to a hyaline hair. The first clade grouped species with heteropolar filaments widened at the base and narrowed gradually toward the apex but not ending in a hair, with basal heterocytes that are formed in series as the apically placed heterocytes senesce; this clade is being named Fulbrightiella gen. nov., with two named species, F. bharadwajae sp. nov. and F. oahuensis sp. nov. The second clade was comprised of a single species with isopolar trichomes that are untapering as hormogonia, but which widen midfilament and taper toward both ends following growth. These trichomes develop pairs of heterocyte mid‐filament, causing fragmentation into heteropolar trichomes with basal heterocytes and ends that taper, but not to a hair. This clade consists of a single species at present, Sherwoodiella mauiensis. With this action, four clades in the Calotrichaceae have been named: Macrochaete, Dulcicalothrix, Fulbrightiella, and Sherwoodiella. Calothrix sensu stricto is truly marine, morphologically distinct, and unsequenced; finding and sequencing the generitype for Calothrix remains as the most important and unfinished task in the revision of the Calotrichaceae
Techno-Economic Assessment of Half-Cell Modules for Desert Climates: An Overview on Power, Performance, Durability and Costs
Photovoltaic modules in desert areas benefit from high irradiation levels but suffer from
harsh environmental stress factors, which influence the Levelized Cost of Electricity by decreasing the
lifetime and performance and increasing the maintenance costs. Using optimized half-cell module
designs mounted in the most efficient orientation according to the plant requirements can lead to
reduced production costs, increased energy yield and longer service lives for PV modules in desert
areas. In this work, we review the technical advantages of half-cell modules in desert regions and
discuss the potential gains in levelized costs of electricity due to reduced material consumption, a
higher cell-to-module power ratio, lower module temperatures, better yields, reduced cleaning cycles
and finally, reduced fatigue in interconnection due to thermal cycling. We show that half-cell modules
are the most cost-effective option for desert areas and are expected to have a relevant lower Levelized
Cost of Electricity
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