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Conservatism and Earnings Management
Omneya Abdelsalam,Panagiotis Dimitropoulos,Stergios Leventis,Marwa Elnahass 한국글로벌문화학회 2015 글로벌문화연구 Vol.6 No.2
We investigate the impact of religion on the quality of financial reporting based on the promulgations of the social norm theory. In particular, we focus on earnings manipulation (EM) and accounting conservatism (AC) in the case of Islamic banking institutions which operate within the context of strict religious norms and governance rules in comparison to conventional banks. We cover the MENA region over the period between 2008 and 2012. By employing multiple models of EM and AC we find that Islamic banks are more conservative, they tend to engage auditors from the big-four auditors as a signalling tool and they are less likely to manipulate earnings when compared to conventional banks.. In summation, we propose that Islamic religious norms, governance and accountability have an impact on enhanced earnings quality. We also offer important regulatory implications and suggestions for further research.
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Synthesis and Anti-inflammatory Activity of Certain Piperazinylthienylpyridazine Derivatives
Khalil, Omneya M.,Kadry, Hanan H.,Refaat, Hanan M. 대한약학회 2007 Archives of Pharmacal Research Vol.30 No.7
In this study, a novel series of 2-(4-substituted piperazin-l-ylmethyl)-6-(thien-2-yl)-2H-pyridazin-3-ones (3a-f), 2-(4-substituted piperazin-l-ylcarbonylmethyl)-6-(thien-2-yl)-2H-pyridazin-3-ones (4a-c) and 2-[2-(4-substituted piperazin-l-ylcarbonylethyl)]-6-(thien-2-yl)-2H-pyridazin-3-ones (5a,b) were prepared from 6-(thien-2-yl)-2H- pyridazin-3-one (1). In addition, 3-(4-substituted piperazin-l-ylcarbonyl methyl thio)-6-(thien-2-yl) pyridazines (6a-c) and 3-[2-(4-substitutedpip-erazin-l-ylcarbonyl ethylthio]-6-(thien-2-yl) pyridazines (7a,b) were synthesized. Furthermore, 5-(4-substituted piperazin-l-ylmethyl)-6-(thien-2-yl)-2H-pyridazin-3-ones (12a,b) were prepared. The structures of the new compounds were confirmed by elemental analysis as well as by $^{1}H-NMR$, IR and MS data. Some of the newly prepared compounds were subjected to evaluation for their anti-inflammatory activity against carrageenan-induced paw edema at a dose of 10 mg/kg using indomethacin as the reference standard.
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Control Channel Selection Techniques in Cognitive Radio Networks: A Comparative Performance Analysis
Ayman Sabbah,Mohamed Ibnkahla,Omneya Issa,Bernard Doray 한국통신학회 2018 Journal of communications and networks Vol.20 No.1
Cognitive radio (CR) technology offers a promising solutionto the spectrum scarcity problem via dynamic spectrum access(DSA). Due to the nature of cooperative cognitive radio networks(CRNs), where two distinct networks are active simultaneously, asignificant amount of control messaging is required in order to coordinatechannel access, schedule sensing, and establish and releaseconnections. Efficient control plane messaging can be achieved bythe selection of an appropriate control channel (CC). Major selectionstrategies of CCs are categorized as either dedicated or dynamicstrategies. This paper studies the major potential techniquesfor selecting reliable CCs for coordination and information distributionin license-exempt (LE) bands. This involves determining thepotential and limitations of each technique in terms of availability,complexity, and robustness. We consider real-life scenarios includingan outdoor stadium and an indoor environment. Recommendationsare given for different situations.
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Synthesis and Anti-inflammatory Activity of Certain Piperazinylthienylpyridazine Derivatives
Hanan M. Refaat,Omneya M. Khalil,Hanan H. Kadry 대한약학회 2007 Archives of Pharmacal Research Vol.30 No.7
In this study, a novel series of 2-(4-substituted piperazin-l-ylmethyl)-6-(thien-2-yl)-2H-pyridazin- 3-ones (3a-f), 2-(4-substituted piperazin-l-yl carbonylmethyl)-6-(thien-2-yl)-2H-pyridazin-3-ones (4a-c) and 2-[2-(4-substituted piperazin-l-ylcarbonylethyl)]-6-(thien-2-yl)-2H-pyridazin-3-ones (5a,b) were prepared from 6-(thien-2-yl)-2H- pyridazin-3-one (1). In addition, 3-(4-substituted piperazin-l-ylcarbonyl methyl thio)-6-(thien-2-yl) pyridazines (6a-c) and 3-[2-(4-substitutedpiperazin- l-ylcarbonyl ethylthio]-6-(thien-2-yl) pyridazines (7a,b) were synthesized. Furthermore, 5-(4-substituted piperazin-l-ylmethyl)-6-(thien-2-yl)-2H-pyridazin-3-ones (12a,b) were prepared. The structures of the new compounds were confirmed by elemental analysis as well as by 1H-NMR, IR and MS data. Some of the newly prepared compounds were subjected to evaluation for their anti-inflammatory activity against carrageenan-induced paw edema at a dose of 10 mg/kg using indomethacin as the reference standard.
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( Mohammed Abd Elfattah Darwesh ),( Wessam Arafa ),( Omneya Ali ),( Abdallah Bastawesy ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
Background: Hepatic encephalopathy is a syndrome observed in patients with liver cirrhosis and the development of hepatic encephalopathy is explained, to some extent, by the effect of neurotoxic substances, which occurs in the setting of cirrhosis and portal hypertension. Few studies have been conducted to evaluate the risk of smoking in developing hepatic encephalopathy. Methods: This was a cross sectional study of 93 (males=64, females=29) previously diagnosed hepatic patients recently admitted in Alexandria university Main hospital using pretested questionnaire tool. Chi square test of independence and Pearson`s correlation coeffi cient were used to analyze our data. Cox proportional models, stratifi ed by gender, were used to estimate hazard ratios. Results: We have found that 78% of hepatic patients who are smoker have a previous history of overt hepatic encephalopathy with evidence of relation between smoking status and developing hepatic coma (P <. 0001) and the hepatic patients who are smokers had a higher risk of developing hepatic comas than who never smoke (HR 2. 521, 95% CI 1. 197-5. 310) and the risk is found to be higher in females (HR 7. 554, 95% CI 1. 370-41. 652). Smoking pack-years were also associated with increasing the risk of developing hepatic comas (HR 1. 000, 95% CI 0. 993-1. 007). Conclusions: Our fi ndings suggest an evidence of relation between tobacco smoking and development of hepatic comas in known hepatic patients. So, we strongly recommend educating hepatic patients to quit smoking especially female hepatic patients.
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Synthesis and Antimicrobial Activity of Certain Novel Quinoxalines
Refaat, Hanan-M.,Moneer, Ashraf-A.,Khalil, Omneya-M. The Pharmaceutical Society of Korea 2004 Archives of Pharmacal Research Vol.27 No.11
In this study, certain 3-methyl-2-[4-(substituted amino carbonyl)anilino] quinoxalines, (2a-d) and (3a-d), were synthesized from the new key compound 2-[4-(ethoxycarbonyl)anilino]-3-methyl quinoxaline (1). In addition, a series of 2-[4-(arylidene hydrazinocarbonyl)anilino]-3-methyl quinoxalines (5a-e), as well as their cyclized oxadiazolinyl derivatives (6a-e), and a series of 2-[4-$N^2$-acylhydrazinocarbonyl)anilino]-3-methyl quinoxalines (7a-d), as well as their cyclized oxadiazolyl derivatives (8a-d) were also prepared. Some of these derivatives were evaluated for antimicrobial activity in vitro. It was found that all the selected compounds exhibit antimicrobial activity and that compound 5b had a broad spectrum of activity.
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