328,533 research outputs found
On Language Contacts in the Mega-Chad Area: The Arabic Influence
No full textLa diffusion de l’Islam en Afrique a forcément introduit des mots nouveaux dans presque toutes les langues parlées dans les zones pénétrées par cette religion. Ces mots ont le plus souvent leurs équivalents dans les langues africaines, d’où le sens péjoratif qu’ils prennent chez les locuteurs: c’est le cas des mots concernant les parties du corps humain et leur connotation. Concernant ce sujet on s´est concentré sur les langues majoritaires dans la zone soudanaise, c.à.d. le hausa, kanuri, fulfulde, mais nous faisons aussi référence à des langues tchadiques minoritaires, comme le kwami et le kupto
Comparing the Efficiency of IP and ATM Telephony
No full textCircuit switching, suited to providing real-time services due to the low and fixed switching delay, is not cost effective for building integrated services networks bursty data traffic because it is based on static allocation of resources which is not efficient with bursty data traffic. Moreover, since current circuit switching technologies handle flows at rates which are integer multiples of 64 kb/s, low bit rate voice encoding cannot be taken advantage of without aggregating multiple phone calls on a single channel. This work explores the real-time efficiency of IP telephony, i.e. the volume of voice traffic with deterministically guaranteed quality related to the amount of network resources used. IP and ATM are taken into consideration as packet switching technology for carrying compressed voice and it is compared to circuit switching carrying PCM (64 Kb/s) encoded voice. ADPCM32 is the voice encoding scheme used throughout most of the paper. The impact of several network parameters, among which the number of hops traversed by a call, on the real-time efficiency is studie
A New Minimally Invasive Mesotherapy Technique for Facial Rejuvenation
No full textIntroduction: This study describes a pivotal clinical trial of a new minimally invasive mesotherapy technique for facial rejuvenation. Methods: The authors utilized two formulations: formulation A with hyaluronic acid, vitamins, amino acids, minerals, coenzymes, and antioxidant substances; formulation B with hyaluronic acid and idebenone. Fifty participants were enrolled in the study and divided in two groups. Group 1 (50-65 years) treated with formulation A. Group 2 (35-50 years) treated with formulation B. The groups underwent four sessions of mesotherapy involving multiple injections. Treatment was conducted at 15 day intervals. All participants had pre- and posttreatment photographs. Punch biopsies were taken from randomly selected participants, baseline and after 6 weeks, and stained for interleukin (IL)-6, IL- 1b, matrix metalloproteinase (MMP)-1, and collagen 1. Clinical evaluation was based on the Global Aesthetic Scale (GAIS) and on the Wrinkle Severity Rating Scale (WSRS). Results: The results produced were statistically analyzed and resulted in a significant and long-lasting effect on facial rejuvenation. Evaluation of photographs at 0, 1, and 2 months revealed significant clinical improvement: brightness, texture, and firmness of the skin. The analysis of the GAIS and WSRS scores in the two groups demonstrated statistically significant results after 2 months. The biopsies taken from randomly selected participants at baseline and after 3 months showed a decrease in IL- 1b, IL-6, and MMP1, and an increase in collagen 1. Conclusion: The new minimally invasive mesotherapy technique described can improve the clinical appearance of the skin in different age groups. © The Author(s) 2013
Adaptive leader-follower synchronization over heterogeneous and uncertain networks of linear systems without distributed observer
No full textA challenging task in network synchronization is steering the network toward a coherent solution, when the dynamics of the constituent systems are heterogeneous and uncertain. In this situation, synchronization can be achieved via adaptive protocols (with adaptive feedback gains or adaptive coupling gains, or both). However, as state-of-the-art synchronization methods adopt a distributed observer architecture, they require to communicate extra observer variables among neighbors, in addition to the neighbors' states (or outputs). The distinguishing feature of this article is to show that for heterogeneous and uncertain networks of some classes of linear systems, synchronization is possible without the need for any distributed observer. Such classes are in line with those in model reference adaptive control literature. Lyapunov analysis is used to derive a new adaptive synchronization protocol with the simplest communication architecture, in which both feedback and coupling gains are adapted without any extra communication other than neighbors' states (in the full-state information case) or neighbors' outputs (in the partial-state information case). Accepted Author ManuscriptTeam Bart De Schutte
Low-level laser therapy and vibration therapy for the treatment of localized adiposity and fibrous cellulite
No full textIntroduction: In recent years, there has been an upsurge in the application of low-level laser therapy in various medical diseases. Additionally, vibration therapy is a new and effective measure to prevent muscular atrophy and osteoporosis, along with some general health-related beneficial effects of exercise on skeletal muscles such as improvement of endothelial function and an increased enzyme capacity of energy metabolism. The aim of this study was to evaluate the application of a 635 nm and 0.040W exit power per multiple diode laser in combination with vibration therapy for the application of non-invasive reduction of circumference in patients with localized adiposity and cellulite. Methods: The study enrolled men and women (N = 33) aged 18-64 years with localized adiposity or fibrous cellulite. The evaluation parameters were: photographic evaluation, perimetric evaluation, blood tests, ecographic evaluation, histological evaluation, and subjective and objective tests. Results: The results produced were statistically analyzed and resulted in a significant reduction of fat thickness when compared to the measurement prior to the treatment (P<0.0001). Moreover, subjective and objective tests, as well as ecographic and histological evaluations, confirmed the reduction of fat thickness. Conclusion: In this study we have demonstrated the safety and efficacy of the combination between low-level laser therapy and vibration therapy for the resolution of localized adiposity and fibrous cellulite. © The Author(s) 2013
A Framework for Rapid Development and Portable Execution of Packet-Handling Applications
No full textThis paper presents a framework that enables the execution of packet-handling applications (such as sniffers, firewalls, intrusion detectors, etc.) on different hardware platforms. This framework is centered on the NetVM - a novel, portable, and efficient virtual processor targeted for packet-based processing - and the NetPDL - a language dissociating applications from protocol specifications. In addition, a high-level programming language that enables rapid development of packet-based applications is presented
La Boemia ussita in una lettera di Enea Silvio Piccolomini a Giovanni Carvajal (21.8.1451) : fra esperienza diplomatica e riflessione storico-politica
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