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Search Results: 1 - 10 of 232732 matches for " Ben-Youssef R "
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Levetiracetam and Speech Therapy in Aphasia from Penetrating Brain Injury. Could it be the Way To Recovery?
Ayyoub Z,Ben-Youssef R
Indian Journal of Physical Medicine and Rehabilitation , 2010,
Abstract: A previously healthy 26 years old right-handed mansustained a penetrating brain injury (PBI) from gunshotwound to the head. The bullet entered the right parietooccipitaljunction, traveled diagonally through the occipitalpole and ended in the left fronto-temporal lobe. Hedeveloped right hemiparesis and global aphasia. He wasenrolled in speech therapy (ST), and was started onlevetiracetam (LEV) 500 mg twice daily (BID) for seizureprophylaxis, then LEV was increased to 750mg BID.After 8 days on LEV 750 mg BID the patient pronouncedthe names of his children and answered questionsappropriately with verbal “yes” and “no”. At discharge,FIM scores in comprehension, expression, memory, andsocial interaction had all improved from 2 to 4. He wasable to respond verbally at the 1-3 word level with 50%accuracy and had shown improvement in auditorycomprehension and verbal expression. The patient waskept on LEV 750 mg BID for 7 months. He had 50outpatient ST sessions. At 9 months, he was able to reada paragraph he had written, and used a paper guide toscan lines. His comprehension of the written languageimproved to the sentence level, and his moneymanagement skills improved to modified independent.Conclusions: LEV appears to improve aphasia andcognitive outcomes of PBI patients treated with ST. Largeprospective randomized trials are needed to confirm thisclinical observation and to establish treatment protocolsfor PBI-induced aphasia that will incorporate ST and LEV.
Morbidity of 200 Consecutive Cases of Hand-Assisted Laparoscopic Living Donor Nephrectomies: A Single-Center Experience
Pedro W. Baron,Ramzi Ben-Youssef,Okechukwu N. Ojogho,Arputharaj Kore,D. Duane Baldwin
Journal of Transplantation , 2012, DOI: 10.1155/2012/121523
Abstract: Background. Recipients of laparoscopically procured kidneys have been reported to have delayed graft function, a slower creatinine nadir, and potential significant complications. As the technique has evolved laparoscopic donor nephrectomy technique is becoming the gold standard for living donation. Study Design. We retrospectively reviewed the data of the first 200 hand-assisted laparoscopic living donor nephrectomies performed between January 2003 and February 2009. The initial 41 donors and their recipients (Group 1) were compared to the next 159 donors and their recipients (Group 2). The estimated blood loss, serum creatinine at discharge and 6 months, and the incidence of delayed graft function and perioperative complications were analyzed. Results. The median donor serum creatinine at discharge and 6 months was 1.2 mg/dL in each group. None of the laparoscopic procedures required conversion to an open procedure, and none of the donors required perioperative blood transfusion. The median recipient serum creatinine at 6 months after transplant was 1.2 mg/dL for each group. No ischemic ureteral complications related to the laparoscopic technique were seen. Conclusions. HALDN with meticulous surgical technique allows kidney procurement with very low morbidity and no mortality. This improved safety and decreased invasiveness from laparoscopic approach may further decrease morbidity of the procedure and increase organ donation.
Morbidity of 200 Consecutive Cases of Hand-Assisted Laparoscopic Living Donor Nephrectomies: A Single-Center Experience
Pedro W. Baron,Ramzi Ben-Youssef,Okechukwu N. Ojogho,Arputharaj Kore,D. Duane Baldwin
Journal of Transplantation , 2012, DOI: 10.1155/2012/121523
Abstract: Background. Recipients of laparoscopically procured kidneys have been reported to have delayed graft function, a slower creatinine nadir, and potential significant complications. As the technique has evolved laparoscopic donor nephrectomy technique is becoming the gold standard for living donation. Study Design. We retrospectively reviewed the data of the first 200 hand-assisted laparoscopic living donor nephrectomies performed between January 2003 and February 2009. The initial 41?donors and their recipients (Group 1) were compared to the next 159?donors and their recipients (Group 2). The estimated blood loss, serum creatinine at discharge and 6?months, and the incidence of delayed graft function and perioperative complications were analyzed. Results. The median donor serum creatinine at discharge and 6?months was 1.2?mg/dL in each group. None of the laparoscopic procedures required conversion to an open procedure, and none of the donors required perioperative blood transfusion. The median recipient serum creatinine at 6?months after transplant was 1.2?mg/dL for each group. No ischemic ureteral complications related to the laparoscopic technique were seen. Conclusions. HALDN with meticulous surgical technique allows kidney procurement with very low morbidity and no mortality. This improved safety and decreased invasiveness from laparoscopic approach may further decrease morbidity of the procedure and increase organ donation. 1. Introduction Despite attempts to increase the number of potential kidney donors, there continues to be a significant shortage of kidneys available to meet the demand for renal transplantation. The gap between the number of patients waiting for a kidney transplant and the number of patients receiving a transplant has widened over the last decade; this has resulted in a continued increase in the waiting time from listing to transplant. At the end of 2008, 50,624 patients were active candidates waiting for kidney transplant, but only 10,551 patients received a deceased donor kidney, and 5,966 received a living donor kidney [1]. Living kidney donation is one of the most attractive approaches to correct the shortage of deceased kidneys available for transplantation. Open living donor nephrectomy had been the standard procedure performed for kidney donation during the previous four decades. Large series have reported an estimated perioperative mortality of 0.03% and 0.2% major and 8% minor complication rates [2, 3]. In 1995, the first laparoscopic donor nephrectomy was reported by Ratner et al. [4], and in 1998 the hand-assisted
Long distance transport of magnon spin information in a magnetic insulator at room temperature
L. J. Cornelissen,J. Liu,R. A. Duine,J. Ben Youssef,B. J. Van Wees
Physics , 2015, DOI: 10.1038/nphys3465
Abstract: The transport of spin information has been studied in various materials, such as metals, semiconductors and graphene. In these materials, spin is transported by diffusion of conduction electrons. Here we study the diffusion and relaxation of spin in a magnetic insulator, where the large bandgap prohibits the motion of electrons. Spin can still be transported, however, through the diffusion of non-equilibrium magnons, the quanta of spin wave excitations in magnetically ordered materials. Here we show experimentally that these magnons can be excited and detected fully electrically in linear response, and can transport spin angular momentum through the magnetic insulator yttrium iron garnet (YIG) over distances as large as 40 micrometer. We identify two transport regimes: the diffusion limited regime for distances shorter than the magnon relaxation length, and the relaxation limited regime for larger distances. With a model similar to the diffusion-relaxation model for electron spin transport in (semi)conducting materials, we extract the magnon relaxation length lambda = 9.4 micrometer in a 200 nm thin YIG film at room temperature.
Social Networking on Web 2.0: From Emotional Intelligence to Cyber Emotional Intelligence
Adel Ben Youssef,Hamida Ben Youssef
International Scientific Journal of Management Information Systems , 2011,
Abstract: The aim of this article is twofold. First, we characterize the social interactions in the Web 2.0 and the forms of intelligence used by people in that context. Second, we propose cyber emotional entelligence as an alternative construct for the explanation of Internet-based social interactions. We stress the differences between the notion of emotional intelligence as developed by Salovey and Mayer and Cyber Emotional Intelligence that we propose. It appears that at each stage people do not have the same ability to express and manage their emotions.
Upper bounding for packing dimension in vectorial multifractal formalism
Ben Youssef Leila
Mathematics , 2011,
Abstract: We establish an other upper bounding for packing dimension in the framework of the vectorial multifractal formalism that is in some cases finer than that established by J. Peyriere.
Multifractal Formalism and Inequality involving Packing Dimension
Leila Ben Youssef
Mathematics , 2008,
Abstract: This article fits in many studies of multifractal analysis of measure. We took as a starting point the work of F. Ben Nasr in " Calculs de dimension de packing " to give a new inequality involving $Dim(\bar{X}^{\alpha})$ which would be, in certain cases, finer than the inequality established by L. Olsen in " A multifractal formalism " . Besides we elaborated an application of our result which gives a better inequality involving $Dim(\bar{X}^{\alpha})$.
Values in Action (VIA) and Counseling Psychology  [PDF]
Samia Ben Youssef Mnif
Psychology (PSYCH) , 2019, DOI: 10.4236/psych.2019.106058
Abstract: Character strengths have been the subject of various researches and positive interventions in different fields of application of psychology: in the workplace, at school, in healthcare, etc. Yet, research on the application of character strengths in the field of counseling psychology is very discrete. The current article presents the relevance of the rapprochement between positive psychology and counselling psychology through the study of character strengths. It exposes the relevance of an approach based on character strengths that allow the individual to prosper and live subjective happy experiences, especially in the field of career guidance. The article concludes by the various positive interventions based on the model of character strengths that are applied to counselling, especially during periods of professional transition.
NATIONAL ADVERTISING AND COOPERATION IN A MANUFACTURER-TWO-RETAILERS CHANNEL
Slim Ben Youssef,Dhouha Dridi
International Review of Management and Marketing , 2013,
Abstract: We consider a supply channel composed of one manufacturer and two symmetric retailers. Three cases are studied. The non-cooperation case is a leader-follower relationship. The manufacturer determines his spending in national advertising and the wholesale price. Then, retailers determine non-cooperatively the price for consumers. In the partial-cooperation case, retailers decide jointly for the price. In the full-cooperation case, all members of the channel cooperate by maximizing a joint profit function. Interestingly, partial-cooperation reduces the profits of retailers with respect to non-cooperation, when the degree of substituability between the two products proposed by retailers is low. Because of symmetry, this also implies that the total profit of retailers may decrease with partial-cooperation. Thus, when the degree of substituability between products is low, it is in the interest of retailers to set their prices non-cooperatively. We propose a cooperative implementable contract between all channel members, which shares the extra-profit due to full-cooperation. We propose a new and unusual evaluation of consumers’ surplus which positively depends not only on the price-demand function but also on the spending in national advertising. Partial-cooperation is always the worst case for the manufacturer, the whole channel, consumers’ surplus and social welfare, while full-cooperation is the best case.
Uses of Information and Communication Technologies in Europe's Higher Education Institutions: From Digital Divides to Digital Trajectories
Adel Ben Youssef,Ludovic Ragni
Revista de Universidad y Sociedad del Conocimiento , 2008,
Abstract: This paper has two objectives, firstly, to identify the three basic levels of educational digital divides and to discuss them in the context of the European Union, and secondly, to develop an alternative hypothesis for educational digital trajectories instead of looking at educational divides.Section one identifies the three levels of digital divides. The first level of educational digital divide concerns differences in ICT equipment. We identify the sources and the mechanisms that help to bridge this divide (Market Dynamics and Public Policies). Then, focussing on the second level of digital divide (usages divide) we analyse why this seems to be the main problem nowadays in Europe. Finally, a third level of digital divide concerns the performance of ICT in education. We give some possible explanations for the productivity paradox which is observed in European higher education.Section two is devoted to the explanation of the diversity of usage of ICT between countries and universities. ICT allows different contextualisation and adaptation to the local context. Universities are developing several digital trajectories and instead of benchmarking universities we look at the explanations for this diversity. Two key elements were explored here: competition strategy of universities and students' attitudes towards the technologies.
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