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What explains the technical efficiency of banks in Tunisia?Evidence from a two‑stage data envelopment analysis

Financial Innovation 2021年第1期7卷 1431-1456页

作者： Mohamed Mehdi Jelassi ezzeddine delhoumi IHEC Carthage and LEFA Carthage UniversityRue Victor Hugo2016 Carthage PrésidenceTunisia

In this study we examine the potential determinants of technical efficiency for the Tunisian commercial banking sector over the period of 1995–***,we estimate banking technical efficiency with a radial and non-radial bootstrap data envelopment *** the radial technique,we use an input-oriented approach and for non-radial we use the Range Adjusted Measure(RAM).Second,we use a double bootstrapping regression technique to estimate the influence of a set of eventual determinants on technical ***,based on all possible regressions,we gauge the overall effect of each *** results reveal that the input-oriented and RAM approach gave somewhat similar *** found that the return on equity,the expense to income ratio,the loan to deposit ratio,and the growth rate are insignificant to Tunisian banking technical *** particular,banking technical efficiency increases with capitalization and inflation,whereas,it decreases with size,number of bank branches,management to staff ratio,and loan to asset *** addition,we identified evidence supporting the moderate success of the last decade of reforms and a noticeable one for the post-revolution reforms in helping improve banking technical *** post-revolution reforms,largely revolving around reinforcing the rules of good governance and banking supervision,coupled with the restructuring of public banks,were found to be insufficient to raise overall banking technical efficiency despite improvement in the technical efficiency of private banks.

关键词： Tunisian banks Financial intermediation Technical efficiency Data envelopment analysis Bootstrap Bias correction Truncated regression

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Characterization of the Dominant Bacterial Communities Associated with Terrestrial Isopod Species Based on 16S rDNA Analysis by PCR-DGGE

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Open Journal of Ecology 2018年第9期8卷 495-509页

作者： delhoumi Majed Zaabar Wahiba Bouslama Mohamed Fadhel Achouri Mohamed Sghaier Laboratory of Bio-Ecology and Evolutionary Systematics Department of Biology Faculty of Sciences of Tunis University of Tunis El Manar Tunis Tunisia

From the marine environment, woodlice gradually colonized terrestrial areas benefiting from the symbiotic relationship with the bacterial community that they host. Indeed, they constitute the only group of Oniscidea suborder that has succeed to accomplish their lives in terrestrial even desert surfaces. Herein they play an important role in the dynamic of ecosystems and the decomposition of litter. So to enhance our understanding of the sea-land transition and other process like decomposition and digestion of detritus, we studied the bacterial community associated with 11 specimens of terrestrial isopods belonging to six species using a Culture independent approach (DGGE). Bands sequencing showed that the cosmopolitan species Porcellionides pruinosus has the most microbial diversity. Screening demonstrated the predominance of Proteobacteria followed by members from Actinobacteria, Firmicutes and Cyanobacteria phyla. In fact we detected some symbionts like Wolbachia, Mycoplasma and Spiroplasma for the first time in a terrestrial isopod species.

关键词： Microbial Community PCR-DGGE Terrestrial Isopod Symbiont

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