88 research outputs found
Shaaban Abdel Rahim and the changing stardom culture in Egypt
No full textThe subject of the study is Shaaban Abdel Rahim, an illiterate former makwagi (man
who irons clothes) who gained pan-Arab fame in 2001 for the song ‘I hate Israel’ and, despite fierce criticism from the national media, has become one of the most recognisable stars of sha’bi music in Egypt. The study aims to answer the question
of the main criterion of Abdel Rahim’s popularity. The initial hypothesis was that the political content of his songs was the most decisive factor in the matter. However, a
more detailed study, based on fieldwork conducted in Egypt in 2012, reveals that his
political commitment is not the key issue. Referring to the theory of social relevance
in popular culture, the author claims that Abdel Rahim’s success is not derived from
the meanings that people read into his songs, but rather from his low origins. The
phenomenon should be considered within the context of a highly class-based society
where Abdel Rahim has become a mouthpiece of the most neglected part of the
Egyptian population deprived of representation in the mainstream media
Supersymmetry, Supergravity, and Superstring Phenomenology
No full textSupersymmetry, supergravity, and superstring are amongst the most popular research topics in particle physics. Supersymmetry is a generalization of the space-time symmetries of quantum field theory that links the matter particles with the force-carrying particles and implies that there are additional superparticles necessary to complete the symmetry. Supergravity is the theory that combines the principles of supersymmetry and general relativity. It naturally includes gravity along with the other fundamental forces (the electromagnetic force, the weak nuclear force, in turn already unified in the electroweak interactions, and the strong nuclear force). String theory is the leading candidate for a theory that unifies all fundamental forces in nature in a consistent scheme. It also provides a consistent framework for the theory of quantum gravity. Compactified string/M-theories make testable predictions about our four-dimensional world.The phenomenology of supersymmetry, supergravity, and superstring is thus very rich and covers many topics: flavour physics and CP violation, Higgs and collider physics, model building beyond the Standard Model, and astroparticle physics and cosmology. Some recent developments in these theories, each with important applications to particle physics and/or cosmology, are the main theme of this special issue.One of the papers of this special issue discusses the constrained generalized Killing spinors, which characterize supersymmetric flux compactifications of supergravity theories, using geometric algebra techniques. Another paper presents a study on what are called Adinkras, which are combinatorial objects developed to study (1-dimensional) supersymmetry representations. Another paper reviews moduli stabilization in type IIB string theory compactification with fluxes. Another paper in this special issue describes supermultiplets wherein a continuously variable “tuning parameter” modifies the supersymmetry transformations. Another paper studies the constraints imposed on the Minimal Supersymmetric Standard Model (MSSM) parameter space by the Large Hadron Collider (LHC) Higgs mass measurements and gluino mass lower bound. Another paper studies helical phase inflation which realizes “monodromy inflation” in supergravity theory. Another paper considers scalar Wilson operators of Supersymmetric Yang-Mills (SYM) theories at high spin and generic twist operators in the multicolor limit. Another paper author gives an overview about the features that the Mathematica package SARAH provides to study new supersymmetric models. Another paper reviews a possible mechanism for the spontaneous breaking of supersymmetry, based on the presence of vacuum condensates. Another paper constructs and studies a formulation of a chargeless complex vector matter field in a supersymmetric framework
Morphological and grammatical study of the fuctional derived nouns in the six anthologies by Sheikh Ibrahim Inyas / Ibrahim Shaaban
No full textThis research is a morphological, grammatical and analytical study on the multiplicity of the
scale of five derived nouns and their formulas as used in the six anthologies (dawawin) of
Senegalese Sheikh Ibrahim Inyas al-Kaulakhi, based on the chosen rulings, methods and context
used by the author of the six collections. The research focuses and discusses on the subject
noun, the accusative noun, the hyperbolic participles, the attributive participle,
comparative/superlative adjective, and their scales and formulas, both standard and nonstandard,
and the usage of their multiple meanings according to the methods employed in these
six dawawin, including infinitive and augmented noun of three or four lettered origin, with
grammatical rulings associated with alif and lam (al), as selected or chosen according to the
usage of Sheikh Ibrahim Inyas al-Kaulakhi. In order to find out the context of morphological and
grammatical methods, analyses were made that acquaint readers with the taste of Sheikh
Ibrahim's ability in applying morphological and grammatical rules. Through extrapolation, the
morphological and syntactic source of each derivative was separately traced in those six
dawawin. In reviewing the morphological and syntactic language of those derivatives, books and
the theories of ancient and modern linguists, according to consensus and contrast, were used in
shedding light on each derived noun by studying the ancient morphological and syntactic
sources according to the information and theories derived therefrom and made analysis
thereon. In this regard, a morphological or grammatical context was established using a
qualitative rather than quantitative approach based on which the research was conducted and
its structure, sections and chapters arranged accordingly, with clarification and detailed
analyses. Findings of this research have established the functioning of morphological structure
and scales of the five derived nouns as well as the semantic meaning, application and usage of
augmented derived nouns as dealt with in their grammatical rulings associated with the Arabic
definite article - alif and lam (al), to enable them function in the past, present and future tenses,
and what not. The research concluded with a revelation which is indicative of Sheikh Ibrahim
Inyas’ ability and mastery of morphological scales and grammatical expertise as though he lived
with and learnt from Khalil, Sibawayh, Ibn Jinni and Asma'i and their ilk
Phenacoccus halli Ezzat 1962
No full text<i>Phenacoccus halli</i> Ezzat, 1962 <p>(Figure 29, after Mohammed et al. 1995)</p> <p> <b>Taxonomy.</b> <i>Phenacoccus halli</i> Priesner and Hosny 1935. Type data. EGYPT: Giza, Pyramids, on roots of <i>Anthemis</i> sp., 10.iv.1930, collector unknown; lectotype and paralectotype designated by Mohammed et al. 1995: 501; Ezzat 1962d: 163-164.</p> <p> <b>Hosts in Egypt.</b> <i>Anthemis</i> sp. (Priesner and Hosny 1935).</p> <p> <b>Distribution in Egypt.</b> Pyramids (Priesner and Hosny 1935; Ezzat 1962d).</p> <p> <b>Remarks.</b> Mohammed et al. (1995) provided a description and illustration of this species. Ezzat (1962) credited Priesner and Hosny (1935) with the authorship of the species; however, the paper he referred to has no mention of this species. Based on Ezzat’s (1962d) brief description of the species, he is considered the author of the species.</p>Published as part of <i>Evans, Gregory A. & Abd-Rabou, Shaaban, 2023, The mealybugs (Hemiptera: Coccoidea: Pseudococcidae) of Egypt, pp. 1-83 in Insecta Mundi 2023 (999)</i> on page 22, DOI: <a href="http://zenodo.org/record/10832115">10.5281/zenodo.10832115</a>
Dual Maxwellian-Kappa modelling of the solar wind electrons: new clues on the temperature of Kappa populations
No full text© ESO, 2017. Context. Recent studies on Kappa distribution functions invoked in space plasma applications have emphasized two alternative approaches that may assume the temperature parameter either dependent or independent of the power-index κ. Each of them can obtain justification in different scenarios involving Kappa-distributed plasmas, but direct evidence supporting either of these two alternatives with measurements from laboratory or natural plasmas is not available yet. Aims. This paper aims to provide more facts on this intriguing issue from direct fitting measurements of suprathermal electron populations present in the solar wind, as well as from their destabilizing effects predicted by these two alternative approaches. Methods. Two fitting models are contrasted, namely, the global Kappa and the dual Maxwellian-Kappa models, which are currently invoked in theory and observations. The destabilizing effects of suprathermal electrons are characterized on the basis of a kinetic approach that accounts for the microscopic details of the velocity distribution. Results. In order to be relevant, the model is chosen to accurately reproduce the observed distributions and this is achieved by a dual Maxwellian-Kappa distribution function. A statistical survey indicates a κ-dependent temperature of the suprathermal (halo) electrons for any heliocentric distance. Only for this approach are the instabilities driven by the temperature anisotropy found to be systematically stimulated by the abundance of suprathermal populations, thus lowering the values of κ-index.sponsorship: The authors acknowledge use of the Ulysses/SWOOPS electron pitch-angle distributions published by the ESA Web service (http://ufa.esac.esa.int/ufa/, author Ruth Skoug, Los Alamos National Laboratory), and support from the Katholieke Universiteit Leuven, the Ruhr-Universitat Bochum, and the Deutsche Forschungsgemeinschaft (DFG). These results were obtained in the framework of the projects GOA/2015-014 (KU Leuven), G.0A23.16N (FWO-Vlaanderen) and C 90347 (ESA Prodex). This research has been funded by the Interuniversity Attraction Poles Programme initiated by the Belgian Science Policy Office (IAP P7/08 CHARM). S.M. Shaaban would like to thank the Egyptian Ministry of Higher Education for supporting his research activities. Thanks are due to S. Stverak for providing the observational data. (Katholieke Universiteit Leuven, Ruhr-Universitat Bochum, Deutsche Forschungsgemeinschaft (DFG), KU Leuven|GOA/2015-014, FWO-Vlaanderen|G.0A23.16N, ESA Prodex|C 90347, Interuniversity Attraction Poles Programme, Belgian Science Policy Office|IAP P7/08 CHARM, Egyptian Ministry of Higher Education)status: Publishe
predictors of length of stay among HIV patients in Portugal using a multilevel model
No full textFunding Information: This research was co-financed by Saúde Global e Medicina Tropical, Instituto de Higiene e Medicina Tropical, Universidade NOVA de Lisboa, Portugal, ref. UID/04413/2020 and Unidade de Investigação em Epidemiologia – Instituto de Saúde Pública da Universidade do Porto (EPIUnit), ref. UIDB/04750/2020; and the Foundation for Science and Technology – FCT (Portuguese Ministry of Science, Technology and Higher Education) [grant number PD/BD/128066/2016 (A. N. Shaaban)]. Publisher Copyright: © 2021, The Author(s).Background: This study offers a comprehensive approach to precisely analyze the complexly distributed length of stay among HIV admissions in Portugal. Objective: To provide an illustration of statistical techniques for analysing count data using longitudinal predictors of length of stay among HIV hospitalizations in Portugal. Method: Registered discharges in the Portuguese National Health Service (NHS) facilities Between January 2009 and December 2017, a total of 26,505 classified under Major Diagnostic Category (MDC) created for patients with HIV infection, with HIV/AIDS as a main or secondary cause of admission, were used to predict length of stay among HIV hospitalizations in Portugal. Several strategies were applied to select the best count fit model that includes the Poisson regression model, zero-inflated Poisson, the negative binomial regression model, and zero-inflated negative binomial regression model. A random hospital effects term has been incorporated into the negative binomial model to examine the dependence between observations within the same hospital. A multivariable analysis has been performed to assess the effect of covariates on length of stay. Results: The median length of stay in our study was 11 days (interquartile range: 6–22). Statistical comparisons among the count models revealed that the random-effects negative binomial models provided the best fit with observed data. Admissions among males or admissions associated with TB infection, pneumocystis, cytomegalovirus, candidiasis, toxoplasmosis, or mycobacterium disease exhibit a highly significant increase in length of stay. Perfect trends were observed in which a higher number of diagnoses or procedures lead to significantly higher length of stay. The random-effects term included in our model and refers to unexplained factors specific to each hospital revealed obvious differences in quality among the hospitals included in our study. Conclusions: This study provides a comprehensive approach to address unique problems associated with the prediction of length of stay among HIV patients in Portugal.publishersversionpublishe
Investigation of Weather Impacts on Pedestrian Volumes
No full textAbstractThis study investigates the impacts of temporal and weather characteristics on pedestrian volumes in a hot climate condition. A major neighborhood located in an urban area in Doha, Qatar was chosen as a case study site. The pedestrian volume data was gathered for three seasons, two days in each season, and three time periods for each day using observations from video recordings for the entire neighborhood. Overall, low pedestrian activity was noticed for all seasons. Pedestrians walked more during the weekday in the winter season, and during the weekend in the summer and spring seasons. Generally, the pedestrian volume was higher during the evening time. The results of a multiple linear regression analysis showed that the pedestrian volume had a log-linear relationship with the weather characteristics. The temperature was the only significant parameters affecting the pedestrian volume. This research is one of the first to study the effect of weather conditions on the pedestrian volumes in a hot weather climate environment
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