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Search Results: 1 - 10 of 6005 matches for " Sara Mansouri "
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Parameter Selection in Periodic Nonuniform Sampling of Multiband Signals
Moslem Rashidi,Sara Mansouri
Computer Science , 2010,
Abstract: Periodic nonuniform sampling has been considered in literature as an effective approach to reduce the sampling rate far below the Nyquist rate for sparse spectrum multiband signals. In the presence of non-ideality the sampling parameters play an important role on the quality of reconstructed signal. Also the average sampling ratio is directly dependent on the sampling parameters that they should be chosen for a minimum rate and complexity. In this paper we consider the effect of sampling parameters on the reconstruction error and the sampling ratio and suggest feasible approaches for achieving an optimal sampling and reconstruction.
Introducing the Iron Potential Zones Using Remote Sensing Studies in South of Qom Province, Iran  [PDF]
Faranak Feizi, Edris Mansouri
Open Journal of Geology (OJG) , 2013, DOI: 10.4236/ojg.2013.34032

The studied area—Kermejegan—is located in the south of Qom Province, Iran. In this paper, geology map, ASTER and ETM7+ satellite images were used and after processing these images with Geomatica and ENVI softwares, iron potential zones were compared with the iron mine position in the south of the area and 2 dominate indexs around. Finally remote sensing, faults and geological data layers were integrated in GIS and hopeful zones were introduced for continuing the exploration processes.

Assessment of Aquifer Vulnerability Based on GIS and ARCGIS Methods: A Case Study of the Sana’a Basin (Yemen)  [PDF]
Yahia Alwathaf, Bouabid El Mansouri
Journal of Water Resource and Protection (JWARP) , 2011, DOI: 10.4236/jwarp.2011.312094
Abstract: Groundwater is the main source of water in arid and semi-arid regions. Therefore, pollution of groundwater is a major issue because aquifers and the contained groundwater are inherently susceptible to contamination from wastewater and agricultural activities. Aquifer vulnerability has been assessed in the Sana’a basin using the DRASTIC method, based on a Geographic Information System (GIS). The DRASTIC model uses seven environmental parameters (Depth to water, net Recharge, Aquifer media, Soil media, Topography, Impact of vadose zone, and hydraulic Conductivity) to characterize the hydrogeological setting and evaluate aquifer vulnerability. A regional scale aquifer vulnerability map of the basin was prepared using overlay analysis with the aid of GIS. A DRASTIC vulnerability map, verified by data of nitrate in groundwater, shows that the defined areas are compatible with land-use data. It is concluded that 6.4% of the basin area is highly vulnerable and urgent pollution-preventions measures should be taken for every kind of relevant activity within the whole basin.
The Modify Version of Artificial Bee Colony Algorithm to solve Real Optimization problems
Parvaneh Mansouri
International Journal of Electrical and Computer Engineering , 2012, DOI: 10.11591/ijece.v2i4.423
Abstract: The Artificial Bee Colony(ABC) algorithm is one of the best applicable optimization algorithm. In this work, we make some modifications to improve the ABC algorithm based on convergence speed of solution. In order to, we add some conditions to selected food sources by bees. So, if solution have been enough near to optimal solution, then further search exist around the food sources. That, this is near to optimal solution because, we can replace lower and upper bounds of food sources with smaller values relate to last search. Therefore, the new search is near to optimal solution and after n(1 < n << maxcycles of algorithm ) iteration, optimal solution achieves. Finally, we illustrate convergence speed of the MABC algorithm that is faster than ABC algorithm. There are some examples.
Pathergy test (PT): Sensitivity and selectivity in 544 patients with Behcet's disease (BD) and in 147 controls
Mansouri P
Tehran University Medical Journal , 1994,
Abstract: The skin hyperreactivity, detected by the pathergy test, is a well known phenomenon in Behcet's disease. Two different methods were used for the pathergy test. a) A needle prick, b) An intadermal injection of normal saline. In this study 83% of Behcet's patients had a positive pathergy test. Where as 44% was of pustule type and 39% of papule type. In 26% of patients the papule formation was observed with both methods. In the control groupe 16% of subjects had a positive pathergy test. All were of papule type . Only 3% of them demonstrated a positive reaction with both methods. The sensitivity of the pathergy test, in this study, was 83% with a specificity of 84%. From these results we may conclude that a positive pathergy test of pustule type, with one of the major manifestations of Behcet's disease, (as proposed in disease). The papule type reaction, by both methods, may have the same diagnostic value as pustule type
A case study of Impetigo
Mansouri P
Tehran University Medical Journal , 1993,
Abstract: This is a report of a case study on 234 patients with impetigo who referred to Razi Dermatology Hospital from April to November, 1989. Treatment was started immediately after obtaining direct smear and performing culture and antibiotic sensitivity test. The most common organism responsible for impetigo was the coagulase-positive staphylococcus (71%). In 13.7% of the cases, the coagulase-negative staphylococcus was grown on culture media, but none of the cultures showed streptococcus as the main organism. Treatment was started with oral penicillin V, oral erythromycin, benzathine penicillin G injection, oral cephalexin, and topical fuccidin. Clinical and bacteriological evaluation after 3-7 days showed that it is preferable to use oral cephalexin instead of other protocols such as oral erythromycin, which has previously been the drug of choice for impetigo. In addition, topical fuccidin with a 75% curative rate was the first drug for treatment, with the same effect as the oral cephalexin
A study on convention on the elimination of all forms of discrimination against women
Hojatollah Mansouri
Management Science Letters , 2012,
Abstract: For many years, there was much discrimination against women in the world in terms of social benefits, job opportunities, etc. In many cases, women received less for similar job than men did and in some cases, many important top management jobs were not even open for women. During the past few decades, there have been tremendous efforts on removing any discrimination laws and regulations against women. In this study, we present a study on convention on the elimination of all forms of discrimination against women (CEDAW) adopted in 1979 and discuss that it is possible to remove some barriers and regulations in Iran without violating Islamic rules and regulations. In fact, the present study explains that there are many rules and regulations, which are in accordance with CEDAW and in some cases there are better rules for women in Iran such as early age retirement plan, breastfeeding, etc.
Les ‘Ulamā’ et la propriété foncière en Ifrīqiya (Ier-IIIe/VIIe-IXe siècles) Scholars and land property in Ifr qiya (1st-IIIrd C./VIIth-IXth C)
Tahar Mansouri
Revue des Mondes Musulmans et de la Méditerranée , 2012, DOI: 10.4000/remmm.6421
Abstract: Les dictionnaires biographiques consacrés à l’Ifrīqiya nous donnent un répertoire d’hommes appartenant à l’élite savante et pieuse. Au travers des informations relatives à ces hommes livrés surtout à la pratique ascétique, nous rencontrons des données, certes rares, mais assez intéressantes, sur les rapports qu’entretenaient les saints personnages de l’Ifrīqiya avec le travail de la terre. On trouve certaines positions juridiques relatives au travail de la terre, aux rapports entre propriétaires et travailleurs, et surtout à la pratique du travail agricole par certains savants et certains saints. Leur étude permettrait de nuancer une idée répandue selon laquelle la civilisation arabo-musulmane serait une civilisation du commerce et de la ville plus que de la terre et de la ruralité. The biographic sources (kutub al-tarā im), which deal with the history of Ifrīqiya give us a great number of biographies of pious men. Through those texts we can find scarce information about the rural and agronomic implication of this category of people. Our contribution doesn’t deal with wealth of these men, but about their rural wealth. This situation allows seeing the constitution of the rural property of men of knowledge and the rural law or farmer’s law.In fine we can say that the muslim civilisation is not based only on the urban economy as it was usually suggested, but also, the rural wealth is important and the better example is the example of ‘Ulamā’ and their rural wealth.
Development and Regeneration in the Endocrine Pancreas
Ahmed Mansouri
ISRN Endocrinology , 2012, DOI: 10.5402/2012/640956
Abstract: The pancreas is composed of two compartments that deliver digestive enzymes and endocrine hormones to control the blood sugar level. The endocrine pancreas consists of functional units organized into cell clusters called islets of Langerhans where insulin-producing cells are found in the core and surrounded by glucagon-, somatostatin-, pancreatic polypeptide-, and ghrelin-producing cells. Diabetes is a devastating disease provoked by the depletion or malfunction of insulin-producing beta-cells in the endocrine pancreas. The side effects of diabetes are multiple, including cardiovascular, neuropathological, and kidney diseases. The analyses of transgenic and knockout mice gave major insights into the molecular mechanisms controlling endocrine pancreas genesis. Moreover, the study of animal models of pancreas injury revealed that the pancreas has the propensity to undergo regeneration and opened new avenues to develop novel therapeutic approaches for the treatment of diabetes. Thus, beside self-replication of preexisting insulin-producing cells, several potential cell sources in the adult pancreas were suggested to contribute to beta-cell regeneration, including acinar, intraislet, and duct epithelia. However, regeneration in the adult endocrine pancreas is still under controversial debate. 1. Introduction The pancreas is an important organ that produces digestive enzymes and hormones to control blood glucose homeostasis. Hence, the organ consists of two major compartments. The main part, the exocrine tissue is composed of acinar cells and an intricate ductal system to transport the digestive juice to the duodenum. Embedded within the exocrine tissues reside highly organized functional units called islets of Langerhans where five hormone secreting cells are clustered [1–5]. In the mouse, islets typically display a core of insulin-producing beta-cells surrounded by alpha, delta, PP, and epsilon cells, secreting the hormones glucagon, somatostatin, pancreatic polypeptide, and ghrelin, respectively [1–5]. During mouse pancreas genesis a complex and highly orchestrated molecular program acts to control the allocation of cell progenitors towards mature endocrine cells [1, 6, 7]. The delineation of the pancreatic fate is marked by the coexpression domain of the transcription factors Pdx1 and Ptf1a at the foregut/midgut junction, where a ventral and a dorsal evaginations announce the first morphological sign of pancreas development [6, 8–10]. Lineage tracing experiments clearly demonstrated that Pdx1-positive progenitor cells contribute to the formation of
Non-Vanishing Cosmological Constant $Λ$, Phase Transitions, And $Λ$-Dependence Of High Energy Processes
Freydoon Mansouri
Physics , 2002, DOI: 10.1016/S0370-2693(02)02022-1
Abstract: It is pointed out that a collider experiment involves a local contribution to the energy-momentum tensor, a circumstance which not a common feature of the current state of the Universe at large characterized by the cosmological constant $\Lambda_0$. This contribution may be viewed as a change in the structure of space-time from its large scale form governed by $\Lambda_0$ to one governed by a $\Lambda$ peculiar to the scale of the experiment. Possible consequences of this effect are explored by exploiting the asymptotic symmetry of space-time for non-vanishing $\Lambda$ and its relation to vacuum energy.
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