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Search Results: 1 - 10 of 200956 matches for " Abbasi P. "
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The Masculine Sea and the Impossibility of Awakening in Chopin’s The Awakening
Abbasi P.
K@ta : a Biannual Publication on the Study of Language and Literature , 2012,
Abstract: Kate Chopin has a firm place in American women’s writing. A persistent theme in her works is said to be women’s emotional liberation. The Awakening (1899) as a feminist novel is no exception. In the novel, Edna’s inner voice and desire for escape from a male-dominated society awaken in her. Edna’s suicide has been interpreted as her victory over the society however, this study argues that the idea of female defeat has been ignored to a great extent the main reason for which is the ignorance or a misreading of sea imagery. The sea of the novel that dissolves Edna is a signifier of male society and language signifying Edna’s failure to find a place within the male dialogue of the society. Extra-marital relationships with Alcee or Robert are not promising, for the climax of such relationships is no more than the old requirement of becoming the good wife and mother that the society prescribes to women. By her ultimate suicidal choice, Edna determines to find a voice and be seen but is totally perished instead to prove that women cannot speak. This study intends to argue and conclude that Chopin had this Kristevaesque belief that the male socio-cultural formation does not let women experience freedom. A new interpretation of the sea as a patriarchal element is offered which makes Edna’s drowning a total defeat rather than victory as suggested by many critics.
Comparison of physical sputtering and ion plating methods for investigation of hydrogen distribution into the hydrogen targets
P Tayyebi,F Abbasi Davani
Iranian Journal of Physics Research , 2011,
Abstract: In this paper, selection of proper method for titanium coating on copper substrate is studied to construct nuclear targets for neutron production in particle accelerators. In order to construct such targets, it is necessary to deposit, through the coating methods, the proper coating of titanium on copper. Among different coating methods, ion plating and sputtering, due to the high coating yield and stability of titanium layers, has been selected. To compare different amounts of hydrogen absorption, two series of targets, different in the coating methods, were exposed to the similar conditions under 40 bar hydrogen gas. Comparison of elastic recoil particles (ERD) results of two series of the targets showed that hydrogen atoms permeated in deeper layer of targets, which were deposited by ion plating, than the targets deposited by sputtering. Hence, it was concluded that the ion plating method is more suitable to make nuclear targets.
Wavelength Width Dependence of Cavity Temperature Distribution in Semiconductor Diode Laser
S. P. Abbasi,A. Alimorady
ISRN Thermodynamics , 2013, DOI: 10.1155/2013/424705
Abstract: The study of heat distribution in laser diode shows that there is nonuniform temperature distribution in cavity length of laser diode. In this paper, we investigate the temperature difference in laser diode cavity length and its effect on laser bar output wavelength width that mounted on usual CS model. In this survey at the first, laser was simulated then the simulations result was compared with experimental test result. The result shows that for each emitter there is difference, about 2.5 degree between the beginning and end of cavity. 1. Introduction High-power infrared diode laser arrays are effective sources for pumping solid-state lasers [1–3]. These laser arrays are composed of one or more laser bars; each laser bar consists of numerous individual laser emitters formed on a single piece of semiconductor [4, 5]. Various characteristics like quantum efficiency, output power, and their dependence on cavity length and composition have been discussed. There are a number of factors that limit the output power and reliability of diode lasers, for example, catastrophic optical damage and overheating. Cavity length increase was used for increasing output power [4]. In this paper at first four laser diode heat sources were considered and this distribution in the cavity was studied and was simulated. Then the temperature distribution was simulated in the single emitter in the laser diode bar that packaged on the CS mount model and then measured the temperature difference in laser diode points in cavity length. Temperature distribution effect on the wavelength width and the wavelength peak shift and other hand simulation results were compared with experimental results. 2. Laser Diode Structure and Simulation Our simulation is based on GaAs, 20?W, CW modes, 808?μm CS laser diode. The laser diode has 19 emitters with 100?μm width stripe and 20% fill factor that was produced in INLC (Figure 1). The laser operation specification is listed in Table 1. Table 1: Laser operation Characteristics. Figure 1: Schematic of laser bar, bar stripe geometry dimension, and CS model packaging laser diode. The mounting of laser bar on the package and the heat removing direction was shown in Figure 2 and layer structure specification is listed in Table 2 and its arrangement was shown in Figure 3. The bar dimensions, thickness, bar width (cavity length), bar length, are 117, 1000, and 9800?μm, respectively. Table 2: Laser bar structure layers specification. Figure 2: Bar packaging position on CS heat sink and heat removed path from the bar to TEC. Figure 3: Laser bar structure
Modeling Accidents on Mashhad Urban Highways  [PDF]
Esmaeel Ayati, Ehsan Abbasi
Open Journal of Safety Science and Technology (OJSST) , 2014, DOI: 10.4236/ojsst.2014.41004
Abstract:


In recent years, numerous researches have been carried out with purpose of predicting motor vehicle crashes on transportation facilities as freeways and urban or rural highways. Accident process can be modeled successfully with assuming a dual-state data-generating process. Based on this assumption, road components like intersections or road segments have two states of perfectly safe and unsafe. Zero-inflated regression models are applied to model accidents usually in cases of preponderance of excess zero data in crash data. We handle in this research, the investigation into effective factors on frequency and severity of accidents on urban highways and use crash data of Mash had-Iran urban highways as a case study. We use in this study, the Poisson, Negative binomial, Zero-inflated Poisson and Zero-inflated Negative binomial regression models for modeling accidents, and traffic flow and road geometry related variables as in dependent variables of models. In addition to identifying effective factors on crash occurrence probability, we deal with comparison of models, evaluate and prove the efficiency of Zero-inflated regression models against traditional Poisson and Negative binomial models.


Analysis of Chaotic Ferroresonance Phenomena in Unloaded Transformers Including MOV  [PDF]
Ataollah Abbasi, Mehrdad Rostami, Ahmad Gholami, Hamid R. Abbasi
Energy and Power Engineering (EPE) , 2011, DOI: 10.4236/epe.2011.34057
Abstract: We study the effect of a parallel metal oxide surge arrester on the ferroresonance oscillations of transformers. It is expected that the arresters generally cause ferroresonance drop out. Simulation has been done on a three phase power transformer with one open phase. Effect of varying input voltage is studied. The simulation results reveal that connecting the arrester to transformers poles, exhibits a great mitigating effect on ferroresonant over voltages. Phase plane along with bifurcation diagrams are also presented. Significant effect on the onset of chaos, the range of parameter values that may lead to chaos and magnitude of ferroresonant voltages is obtained, shown and tabulated.
Are we degenerate tetraploids? More genomes, new facts
Amir Abbasi
Biology Direct , 2008, DOI: 10.1186/1745-6150-3-50
Abstract: In this article I review the 2R hypothesis by taking into account the recent availability of genomic sequence data for an expanding range of animals. I argue here that genetic architecture of lower metazoans and representatives of major vertebrate and invertebrate lineages provides no support for the hypothesis relating the origin of vertebrates with widespread gene or genome duplications.It appears that much of the genomic complexity of modern vertebrates is very ancient likely predating the origin of chordates or even the Bilaterian-Nonbilaterian divergence. The origin and evolution of vertebrates is partly accompanied by an increase in gene number. However, neither can we take this subtle increase in gene number as an only causative factor for evolution of phenotypic complexity in modern vertebrates nor we can take it as a reflection of polyplodization events early in their history.This article was reviewed by Eugene Koonin, Joshua Cherry (nominated by David Lipman), and Jerzy Jurka.To explain the genetic basis of major transitions in organismal evolution, in 1970 Susumu Ohno famously proposed that multiple rounds of whole genome duplications (2R hypothesis) had occurred during the early history of vertebrate lineage, driving the evolution of developmental and morphological complexity in vertebrates [1,2]. Ohno,s idea was based solely on genome size differences, chromosomal topologies, and recent tetraploidization events in some fish and amphibians. Over the past decade the 2R hypothesis has gained extensive popularity among evolutionary and developmental biologist.Proponents presented several lines of evidence in favor of entire genome duplication hypothesis in the early vertebrates. First, compared to model invertebrate genomes (fruit fly, nematode, sea squirt and amphioxus) the typical vertebrate genome possess more genes [3]. Second, the existence of paralogons in the human genome [4,5]. Third, the conservation of gene synteny throughout vertebrates and their
Estrogen Receptor-Beta Gene Polymorphism in women with Breast Cancer at the Imam Khomeini Hospital Complex, Iran
Sakineh Abbasi
BMC Medical Genetics , 2010, DOI: 10.1186/1471-2350-11-109
Abstract: Breast cancer is the most prevalent cancer among women in most parts of the world, including Iran. Geographical variations in incidence and mortality rates of breast cancer suggest that the known risk factors for breast cancer may vary in different parts of the world and that environmental factors may be of greater importance than genetic factors [1]. For instance, in Iran it has been shown that, even after adjusting for age, young women are at relatively higher risk for developing breast cancer than are their Western counterparts [2,3].It is known that breast cancer typically arises in luminal epithelial cells of the mammary gland [4,5]. These cells contain estrogen receptors (ERs), which respond to ovarian estrogen in normal mammary gland development. How estrogens stimulate cell growth is not fully understood, but it is known that estrogen activation of ERs results in transcription of various genes that are involved in cellular proliferationOnly a small fraction (< 5%) of women diagnosed with breast cancer have a clear hereditary predisposition [6-8], and of these, about one half have predisposing mutations in BRCA1, BRCA2, PTEN, TP53, or other known cancer predisposing genes. However, twin studies indicate that the heritability of breast cancer is about 30% [9], suggesting that genes other than the well-mapped regions act as modifiers of breast cancer risk. Although it is likely that low penetrance as well as high penetrance genes may be involved in the etiology, it remains unclear which genomic regions and which biochemical functions or signal transduction pathways account for the additional heritability of breast cancer incidence or progression.Epidemiologic evidence suggests that estrogen plays a crucial role in most breast cancers in women who have both early menarche and late menopause. Obesity is also associated with breast cancer risk; estrogen synthesis in adipose tissue is proposed to account for this increase in risk. There is data on the involvement o
Edwin Muir’s Local Attitude towards Globalization: A Brief Look at “The Horses”
Pyeaam Abbasi
Studies in Literature and Language , 2011, DOI: 10.3968/j.sll.1923156320110302.360
Abstract: The rise of imperialism has given birth to the notion of globalization that connotes several ideas: First, threat to national boundaries; second, rapid technological progresses; and third, the policy of homogenization or uniformity. Technological progresses have been regarded as the main threat on national identity and the main cause of global identity. The discursive reflection of globalization can be studied in literature and best in poetry. Because the local aspect of English poetry places more emphasis on the significance of poetry in the latter half of the 20th century, “The Horses” by the Scottish Edwin Muir (1887-1959) can be an excellent study of the poet’s local attitude towards globalization. Although Muir wrote in English, he never lost sense of regionality and national identity. He was always concerned about feeling in one language and thinking in another. This study is an attempt to show Muir’s view, as a localized figure, about globalization and the aftermath of technological progresses with a brief look at “The Horses” offering possibility of nationalism. Key words: Edwin Muir; “The Horses”; Globalization; Technology; National identity
On asymptotic distribution of sample central moments in normal-uniform distribution
N. Abbasi
International Mathematical Forum , 2013,
Abstract: The central moments are very useful in topics identified distribution as they revealthe measure of skewness. In this article, we present the asymptotic distribution ofestimator of third central moment as well as the distribution of estimator ofskewed measure by employing of the theory of U-statistics in the family ofskewed normal-uniform distribution. By changing the three parameters of thisdistribution, one related to normal distribution, the other related to uniformdistribution, and the third to skew parameter, we characterize this kind ofdistribution.
Shapiro-Wilk test in evaluation of asymptotic distribution on estimators of measure of kurtosis and skew
N. Abbasi
International Mathematical Forum , 2013,
Abstract: In this article, we evaluate the results obtained on asymptotic distribution ofmoments in estimator measures of skew and kurtosis in the family of skewnormal-uniform distribution. With the help of simulation random sample from thisdistribution and then by the Shapiro-Wilk test, we verify the results.
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