1,721,580 research outputs found
Estimation of Depth to Bottom of Magnetic Sources using Spectral Methods: Application on Iran's Aeromagnetic Data
No full textAeromagnetic grid of Iran
Tilte:
Estimation of Depth to Bottom of Magnetic Sources using Spectral Methods: Application on Iran’s Aeromagnetic Data.
Authors: Raj Kumar, Abhey Ram Bansal, Abdolreza Ghods
Journal: Journal of Geophysical Research: Solid Earth</p
Nuclear fusion as a probe for octupole deformation in Ra 224
No full textAbstract
Background: Nuclear fusion has been shown to be a useful probe to study the different nuclear shapes. However, the possibility of testing octupole deformation of a nucleus with this tool has not been fully explored yet. The presence of a static octupole deformation in nuclei will enhance a possible permanent electric dipole moment, leading to a possible demonstration of parity violation.
Purpose: To check whether static octupole deformation and octupole vibration in fusion give different results so that both situations could be experimentally disentangled.
Method: Fusion cross sections are computed in the coupled-channel formalism making use of the ingoing-wave boundary conditions ( IWBC) for the systems O-16 + Ba-144 and O-16 + Ra-224.
Results: Barrier distributions of the two considered schemes show slightly different patterns. In the case of Ba-144, the difference between them is negligible. For the Ra-224 case, perceptible differences are found in correspondence with its larger octupole deformation. However, the possibility of disentangling both schemes is not guaranteed and it will depend on the available experimental accuracy and the strength of the octupole deformation.
Conclusions: The measurement of barrier distributions could be a complementary probe to support the presence of octupole deformation
Visible electroluminescence from a ZnO nanowires/p-GaN heterojunction light emitting diode
No full textGender and Public Spending on Education in Pakistan: A Case Study of Disaggregated Benefit Incidence
Full text linkIt is generally believed that education is one of the basic rights of every human being, irrespective of sex, age, creed, religion, etc. Moreover, the target of universal primary education cannot be achieved without female access to educational opportunities, which contains several external benefits. In addition, access to educational opportunities assumes prime importance for empowerment of women. However, inequalities in access to education between males and females can be found in many countries across the world including Pakistan. According to conventional wisdom, a combination of cultural, social, and economic factors are responsible for placing young girls and women at a serious disadvantage vis-a-vis access to school and the prospect of completing their education. This disadvantage can be altered through public policies including gender sensitive public spending on education. The above assertion about the role of public policy is based on the theory of public finance1, which demonstrates that public expenditure on education can affect the population in a number of ways, which has significant gender dimensions. For example, government spending on primary education is likely to generate more income for women than spending on universities, for the simple reason that there are relatively more women primary school teachers than women university lecturers. Moreover, these expenditures provide subsidized educational services, which is a form of “in kind transfers”. These “in-kind transfers” improve the current well-being of the recipients, and enhance their longer-run income-earning potential. They can be considered as both current and capital transfers to the recipients, and therefore can be termed as the “benefit incidence” of public spending. The main concern of this paper is to assess the gender dimension of the benefitincidence”. The tudy has two basic objectives. First and foremost, it aims to investigate which income group actually benefits from the government’s subsidized.
Holographic optics-based schlieren diffraction interferometer
No full textThis paper describes a scheme that uses holographic optics for realization of schlieren diffraction interferometer. The interferometer has been realized with single holographic optical element in conjunction with a collimated beam and the focal plane-modifying element. Multiplexing ability of holographic optics also enables simultaneous operation of more than one technique such as schlieren, shadowgraph and interferometric techniques. Combined schemes where one or more techniques could be applied simultaneously are useful for detailed investigations of phenomena like flow of compressible fluids, because each method has its own characteristic strengths and weaknesses. Procedures for the generation of holographic optical element and realization of various schemes have been presented.
KUMAR Raj ; KAURA Sushil K. ; CHHACHHIA D. P. ; MOHAN D. ; AGGARWAL A. K.
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Bottle-brush-shaped heterostructures of NiO-ZnO nanowires: growth study and sensing properties
No full textWe present here heterostructured ZnO-NiO nanowires, constituted by a core of single crystalline ZnO nanowires, covered by poly-crystalline NiO nanorods. The bottle-brush shape was investigated by SEM and TEM, confirming that a columnar growth of NiO occurred over the ZnO core, with a preferred orientation of NiO over ZnO nanowires. The heterostructured devices are proposed for gas sensing application. Bare ZnO nanowires and heterostructured sensors with two different thicknesses of NiO poly-crystalline nanorods were analysed for acetone, ethanol, NO2 and H2 detection. All sensors maintained n-type sensing mechanism, with improved sensing performance for lower thickness of NiO, due to high catalytic activity of NiO. The sensing dynamic is also strongly modified by the presence of heterojunction of NiO/ZnO, with a reduction of response and recovery times towards ethanol and acetone at 400°C.
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