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In this study, an unknown input observer is proposed for a class of nonlinear GPFOSs. For this class of systems, both full-order and reduced-order observers have been established. The investigated system satisfies the one-sided Lipschitz nonlinear condition, which is an improvement of the classic Lipschitz condition. Sufficient conditions have been proposed to ensure the error dynamics’ Mittag–Leffler stability. The value of this work lies in the fact that, to the best of the authors’ knowledge, this is the first research work that investigates the issue of Observer Design (OD) for GPFOSs. To exemplify the usefulness of the suggested observers, an illustrative numerical example is suggested.

The state feedback controller design for a class of Generalized Proportional Fractional Order (GPFO) Nonlinear Systems is presented in this paper. The design is based on the combination of the One-Sided Lipschitz (OSL) system class with GPFO modeling. The main contribution of this study is that, to the best of the authors’ knowledge, this work presents the first state feedback control design for GPFO systems. The suggested state feedback controller is intended to ensure the system’s generalized Mittag Leffler (GML) stability and to deliver optimal performance. The findings of this paper show that the proposed strategy is effective in stabilizing Generalized Proportional Fractional Order Nonlinear Systems. A numerical example is presented to demonstrate the usefulness of the stated theoretical conclusions.

This paper investigates the influence of cavity configuration and post-endodontic restoration on the fracture resistance, failure mode and stress distribution of premolars by using a method of fracture failure test and finite elements analysis (FEA) coupled to Weibull analysis (WA). One hundred premolars were divided into one control group (Gcontr) (n = 10) and three experimental groups, according to the post-endodontic restoration (n = 30), G1, restored using composite, G2, restored using single fiber post and G3, restored using multifilament fiberglass posts (m-FGP) without post-space preparation. Each experimental group was divided into three subgroups according to the type of coronal cavity configuration (n = 10): G1O, G2O, and G3O with occlusal (O) cavity configuration; G1MO, G2MO, and G3MO with mesio-occlusal (MO); and G1MOD, G2MOD, and G3MOD with mesio-occluso-distal (MOD). After thermomechanical aging, all the specimens were tested under compression load, and failure mode was determined. FEA and WA supplemented destructive tests. Data were statistically analyzed. Irrespective of residual tooth substance, G1 and G2 exhibited lower fracture resistance than Gcontr (p < 0.05), whereas G3 showed no difference compared to Gcontr (p > 0.05). Regarding the type of restoration, no difference was highlighted between G1O and G2O, G1MO and G2MO, or G1MOD and G2MOD (p > 0.05), whereas G3O, G3MO, and G3MOD exhibit higher fracture resistance (p < 0.05) than G1O and G2O, G1MO and G2MO, and G1MOD and G2MOD, respectively. Regarding cavity configuration: in G1 and G2, G1O and G2O exhibited higher fracture resistance than G1MOD and G2MOD, respectively (p < 0.05). In G3, there was no difference among G3O, G3MO and G3MOD (p > 0.05). No difference was found among the different groups and subgroups regarding the failure mode. After aging, premolars restored with multifilament fiberglass posts demonstrated fracture resistance values comparable to those of an intact tooth, irrespective of the different type of cavity configuration. Keywords: fracture resistance; multifilament fiberglass posts; single fiber post.

The aim of the present study was to investigate the influence of the mechanical properties of three different calcium-silicate-based cements on the stress distribution of three different retrograde cavity preparations. Biodentine™ “BD”, MTA Biorep “BR”, and Well-Root™ PT “WR” were used. The compression strengths of ten cylindrical samples of each material were tested. The porosity of each cement was investigated by using micro-computed X-ray tomography. Finite element analysis (FEA) was used to simulate three retrograde conical cavity preparations with an apical diameter of 1 mm (Tip I), 1.4 mm (Tip II), and 1.8 mm (Tip III) after an apical 3 mm resection. BR demonstrated the lowest compression strength values (17.6 ± 5.5 MPa) and porosity percentages (0.57 ± 0.14%) compared to BD (80 ± 17 MPa–1.22 ± 0.31%) and WR (90 ± 22 MPa–1.93 ± 0.12%) (p < 0.05). FEA demonstrated that the larger cavity preparation demonstrated higher stress distribution in the root whereas stiffer cement demonstrated lower stress in the root but higher stress in the material. We can conclude that a respected root end preparation associated with cement with good stiffness could offer optimal endodontic microsurgery. Further studies are needed to define the adapted cavity diameter and cement stiffness in order to have optimal mechanical resistance with less stress distribution in the root.

With the widespread use of deep learning in leading systems, it has become the mainstream in the table detection field. Some tables are difficult to detect because of the likely figure layout or the small size. As a solution to the underlined problem, we propose a novel method, called DCTable, to improve Faster R-CNN for table detection. DCTable came up to extract more discriminative features using a backbone with dilated convolutions in order to improve the quality of region proposals. Another main contribution of this paper is the anchors optimization using the Intersection over Union (IoU)-balanced loss to train the RPN and reduce the false positive rate. This is followed by a RoI Align layer, instead of the ROI pooling, to improve the accuracy during mapping table proposal candidates by eliminating the coarse misalignment and introducing the bilinear interpolation in mapping region proposal candidates. Training and testing on a public dataset showed the effectiveness of the algorithm and a considerable improvement of the F1-score on ICDAR 2017-Pod, ICDAR-2019, Marmot and RVL CDIP datasets.

Dans cet article, nous proposons, dans le cadre d’une recherche-action, une approche d’amélioration des processus hospitaliers basée sur l’identification des étranglements. L’objectif est de rationaliser les processus hospitaliers afin d’accélérer les flux et fournir des services de haute qualité aux moindres coûts. L’approche combine le Business Process Management et le Lean Management pour tirer profit de leurs forces respectives. En procédant d’une façon descendante, nous avons commencé par identifier et classer les processus du service d’urgences du CHU Charles Nicolle à Tunis, Tunisie. Ensuite, nous avons formalisé le processus de prise en charge des patients pour dresser une cartographie de la chaîne de valeur permettant d’identifier et de quantifier les activités sans valeur ajoutée, principalement les attentes et les déplacements inutiles. Cette cartographie a révélé deux principaux goulots ainsi que l’importance de la coordination et de la mise en place d’un système efficace d’information et d’aide à la décision. Un tel outil devrait permettre de décloisonner les différents services du CHU tout en permettant de synchroniser les différentes activités afin de le piloter d’une façon plus efficace.

In response to a global movement demanding justice for historically oppressed communities, there are increased calls for transitional justice approaches to help unravel legacies of colonization, slavery and marginalization. Applying transitional justice approaches to contexts of structural injustice raises new questions that push the boundaries of the field. In the face of these challenges, this article explores ways to conceptualize transitional justice as a dynamic, ongoing relational process that centers victims and involves bystanders, beneficiaries and the general public in meaningful and appropriate ways. Across different socio-political contexts, we look to new voices, in particular youth voices and creative approaches, for inspiration on how to bring more people into the conversation to address emerging dilemmas in consolidated democracies. Much can be learned from the dynamic spaces created by young people to encourage a more transformational process of reckoning with past legacies to advance a more just future.

The main purpose of this master thesis is to understand the impact of digitalization on the different efficiency aspects of the food safety management system. The Master thesis started with a deep scientific literature analysis to identify the different digital tools used for the food safety management systems and to look for the finding of existing papers concerning the efficiency of food safety management systems. Following this, the author carried out a qualitative research using interviews with experts representing companies that offer digital tools intended for the food safety management system, food safety auditors and quality managers of food industries who have presented answers to research questions. The performed research revealed that digitalization helps in improving the overall efficiency of the food safety management system through a strong traceability system across the food supply chain. Also by eliminating the waste of time or resources compared to the non-digitalized methods. The experts believe that this positive impact of digitalization on the efficiency of the food safety management system is moderated by some factors like the mindset of the management toward digital solutions and the resistance to change by the personnel.

Attack paths are the potential chain of malicious activities an attacker performs to compromise network assets and acquire privileges through exploiting network vulnerabilities. Attack path analysis helps organizations to identify new/unknown chains of attack vectors that reach critical assets within the network, as opposed to individual attack vectors in signature-based attack analysis. Timely identification of attack paths enables proactive mitigation of threats. Nevertheless, manual analysis of complex network configurations, vulnerabilities, and security events to identify attack paths is rarely feasible. This work proposes a novel transferable graph neural network-based model for shortest path identification. The proposed shortest path detection approach, integrated with a novel holistic and comprehensive model for identifying potential network vulnerabilities interactions, is then utilized to detect network attack paths. Our framework automates the risk assessment of attack paths indicating the propensity of the paths to enable the compromise of highly-critical assets (e.g., databases) given the network configuration, assets' criticality, and the severity of the vulnerabilities in-path to the asset. The proposed framework, named SPGNN-API, incorporates automated threat mitigation through a proactive timely tuning of the network firewall rules and zero-trust policies to break critical attack paths and bolster cyber defenses. Our evaluation process is twofold; evaluating the performance of the shortest path identification and assessing the attack path detection accuracy. Our results show that SPGNN-API largely outperforms the baseline model for shortest path identification with an average accuracy >= 95% and successfully detects 100% of the potentially compromised assets, outperforming the attack graph baseline by 47%.

Vitiligo is a multifactorial dermatosis with many etiological hypotheses that have been suggested for its occurrence. To our knowledge, few epidemiological studies are available on vitiligo induction factors and particularly on the role of exposure to chemicals in the onset of the disease has been found. Therefore, there is need to investigate the relationship between vitiligo and chemical exposures in order to understand this mysterious disease. We conducted a case-control study of patients with vitiligo whose diagnosis was made by a specialist in dermatology. The total study period was of 6 months extending from 1 July to 31 December 2019. The minimum sample size was determined as 46 cases and 92 controls. The control group was gender, age, and professional status matched to the vitiligo group. In the binary logistic regression model, household chemicals/colored toothpaste use, a history of a repeated antibiotic use, and an occupational exposure to phenol/catechol derivatives were significantly associated with vitiligo (three to fourfold increase). Our results suggest that chemical factors play a key role in the occurrence of vitiligo. Therefore, prevention of this dermatosis requires the identification of exposure to the incriminated chemicals in any patient followed for vitiligo. The earlier the diagnosis of 'chemical' or chemically aggravated vitiligo, the better the prognosis for this disease.

Este artículo se encuentra disponible en la siguiente URL: https://www.mdpi.com/2077-0383/11/22/6754 Este artículo de investigación pertenece al número especial "Current Topics in Endodontics". En este artículo de investigación también participan: Frédéric Addiego, Francesco Inchingolo, Youssef Haikel y Davide Mancino. The aim of this in vitro study was to investigate the compressive strength and the bulk porosity of a bidirectional (bFRC) and an experimental bidirectional spiral winding reinforced fiber composite (bswFRC). Cylindrical-shape specimens were prepared for each material group and processed for the evaluation of compressive strength after different storage conditions (dry, 1 and 3 months) in distilled water at 37 C. The specimens were also assessed for the degree of bulk porosity through X-ray tomography. A scanning electron microscope (SEM) was used to determine the fracture mode after a compressive strength test. Data were statistically analyzed using Two-Way Analysis of Variance (ANOVA). A significantly lower compressive strength was obtained in dry conditions, and after 1 month of water immersion, with the specimens created with bFRC compared to those made with bswFRC (p < 0.05). No significant difference (p > 0.05) was found between the two groups after 3 months of water immersion. However, the presence of water jeopardized significantly the compressive strength of bswFRC after water storage. The type of fracture was clearly different between the two groups; bswFRC showed a brutal fracture, whilst bFRC demonstrated a shear fracture. The bswFRC demonstrated higher pore volume density than bFRC. In conclusion, bswFRC is characterized by greater compressive strength compared to bFRC in dry conditions, but water-aging can significantly decrease the mechanical properties of such an innovative FRC. Therefore, both the novel bidirectional spiral winding reinforced fiber composites (bswFRC) and the bidirectional fiber reinforced composites (bFRC) might represent suitable materials for the production of post-and-core systems via CAD/CAM technology. These findings suggest that both FRC materials have the potential to strengthen the endodontically treated teeth.

In this paper, we investigate the influence of the rare earth element (R) on the physical properties of RVO3 (R = Er, Ho, Y, Lu). For this purpose, a theoretical work is reported in this study using ab initio method with the intent of enhancing our knowledge of the electronic, and magnetic properties of RVO3 (R = Er, Ho, Y, Lu) compounds. The electronic properties of these materials show the presence of Jahn-Teller effect, with a band gap of approximately 0.58eV, 1.57eV, 1.12eV, 1.28eV, for ErVO3, HoVO3, YVO3, LuVO3, respectively. The magnetic contribution of Ho, Er, and V atoms in HoVO3, and ErVO3 compounds was disentangled using X-ray magnetic circular dichroism (XMCD). The magnetic anisotropies of RVO3 with (R = Er, Ho, Y, Lu) are studied and analyzed using spin orbit coupling. We noticed an easy axis of magnetization along the c-direction with strong magneto-crystalline anisotropy energies for the non-magnetic rare earth elements (R = Lu, Y)VO3. For the magnetic rare earth elements, the easy and hard magnetization direction were found to be along b-axis and c-axis, and a- axis and c-axis for HoVO3, and ErVO3, respectively. This means that instead of the standard magnetization demagnetization process, large thermal effects can be obtained by spinning their single crystals in constant magnetic fields. The exchange coupling between (Ho-V) is also found to be greater than the other exchange interactions in HoVO3. Accordingly, a large conventional magnetocaloric effect could be created in HoVO3, since the Ho Ising moments experience a metamagnetic transition. However, the magnetocaloric effect (MCE) is expected to be lower in ErVO3 due to the weak (Er-V) exchange coupling.

Occupational cutaneous squamous-cell carcinoma has an increased incidence, but rarely suspected. When located in an uncovered skin area, it is closely linked to polycyclic aromatic hydrocarbons exposure. However, single pulmonary anthracosis nodule is rarely described in the literature. The association of both diseases due to the same exposure remains uncommon.

By bringing smart and advanced solutions, the Internet of Things (IoT) has opened up new dimensions of innovative services and processing power for contemporary living standards. IoT has a wide range of devices and communication entities as a result of the widespread applications of these services, making network management a challenging task. Therefore, it is critical to redesign the IoT network’s management. The inherent programmability and centralized capabilities of software-defined networking (SDN) make network management simpler, enable network abstraction, make network evolution easier, and have the potential to handle the IoT network. However, security issues still present the IoT dilemma. Distributed Denial of Service (DDoS) attacks are among the most significant security threats in IoT systems. This paper studies in-depth DDoS attacks in IoT and in SDN. A review of different detection and mitigation techniques based on SDN, blockchain and machine learning models is conducted. A holistic, secure IoT system is proposed on the basis of SDN with multicontrollers. Blockchain is considered to guarantee security in distributed SDN-IoT networks and ANN to improve the detection and mitigation process.

In the last few years, a new class of fractional-order (FO) systems, known as Katugampola FO systems, has been introduced. This class is noteworthy to investigate, as it presents a generalization of the well-known Caputo fractional-order systems. In this paper, a novel lemma for the analysis of a function with a bounded Katugampola fractional integral is presented and proven. The Caputo–Katugampola fractional derivative concept, which involves two parameters 0 < α < 1 and ρ > 0, was used. Then, using the demonstrated barbalat-like lemma, two identification problems, namely, the “Fractional Error Model 1” and the “Fractional Error Model 1 with parameter constraints”, were studied and solved. Numerical simulations were carried out to validate our theoretical results.

Purpose This study aims to examine the influence of accounting professionals’ Machiavellian behavior and ethical judgments on their intention to report fraudulent acts and also to examine the moderating effect of Machiavellianism on the relationship between professionals’ ethical judgments and whistleblowing intention, as well as the mediating effect of personal responsibility, personal costs/benefits and the seriousness of the questionable act on this relationship. Design/methodology/approach The data were collected via a survey sent to 201 Tunisian accounting professionals and analyzed using the structural equation method. Findings The results indicate that ethical judgments support the whistleblowing intentions among Tunisian accountants. However, this relationship is affected by Machiavellian behavior that minimizes whistleblowing. Furthermore, the results show that Machiavellianism is negatively associated with whistleblowing intention and has an indirect effect on whistleblowing through perceived personal benefit and the seriousness of the questionable act. Originality/value Examining the ethical ideologies that may affect whistleblowing, including Machiavellianism and ethical judgment, in the Tunisian context contributes to the literature on the accounting profession in the Middle East and North Africa. The results of this study could raise awareness among policymakers and regulators in developing countries, particularly in Tunisia, to value whistleblowing as a mechanism for detecting and controlling organizational misconduct and enact regulations that encourage accounting professionals to report fraudulent acts while protecting them.

The surgical treatment of lumbar degenerative spondylolisthesis (LDS) remains controversial. The aim of this study was to determine the effect of adding transforaminal lumbar interbody fusion (TLIF) to posterolateral fusion (PLF) on the local lordosis, sagittal alignment and potential complications. The second aim was to evaluate the effect of slip reduction on the same parameters.The initial hypothesis was that TLIF provides better correction of the local lordosis and that reducing the slip improves the global sagittal balance.In this retrospective, single-center study, patients who had been operated on for LSD at one or two levels by laminectomy and PLF, with or without a TLIF cage, were included. Data collected consisted of age, sex, number of levels fused and whether or not a TLIF cage was used. Fusion was defined as the absence of indirect nonunion signs on radiographs at 2 years postoperative. The occurrence and time frame of any complications and the need for reoperation were documented. Lateral radiographs of the entire spine were analyzed preoperatively, in the early postoperative period (3 to 6 months) and at a minimum follow-up of 2 years. The following parameters were measured: pelvic parameters, C7 sagittal tilt (C7ST), spinosacral angle (SSA), maximum lumbar lordosis (LL), lordosis at slipped level (LS), slip percentage. The analysis compared patients treated by PLF and TLIF and determined the impact of slip reduction.One hundred three patients were included in the study (71% women). The mean follow-up was 38 months. The mean age was 69 years. Seventy-seven patients (75%) underwent PLF. Comparing the preoperative and early postoperative data identified 5.4% better spondylolisthesis reduction in the TLIF group than the PLF group (-8.9 ± 9.5% vs -3.5 ± 7.6%; p=0.04) that was not maintained at the final follow-up. The fusion rate was comparable between groups: 94% in APL and 89% in TLIF (p=0.7). The overall complication rate was 46% in the TLIF group versus 33% in the PLF group (p=0.35). A comparison based on whether or not the slip was reduced found significant improvement in the reduction group of the SSA by more than 6° (6.8° ± 6° vs 0.5° ± 7.4°; p=0.04). The fusion rate was 91% in the reduced group and 95% in the non-reduced group (p=0.81); the complication rate was 44% versus 28% in the non-reduced group (p=0.10).This study shows that slip reduction helps to improve the sagittal alignment by increasing the SSA when treating LDS. Posterolateral fusion and TLIF produce comparable radiographic outcomes at 2 years postoperative in the segmental lordosis, slip reduction, global sagittal alignment and fusion rate.IV.

Introduction: The aim of this study was to evaluate torsional, dynamic, and static cyclic fatigue resistance of the reciprocating One RECI (OR; Micromega, Besançon, France), WaveOne Gold (WOG; Dentsply Maillefer, Ballaigues, Switzerland), rotary One Curve (OC, MicroMega), and ProTaper Next X2 (PTN X2; Dentsply Sirona, Charlotte, NC) instruments. Methods: A total of 120 OR (n = 30), WOG (n = 30), OC (n = 30), and PTN X2 (n = 30) nickel-titanium instruments were used. Torque and rotation angle until failure under static torsion loading were measured according to ISO 3630-1. Static and dynamic fatigue resistance was measured as the time to fracture in an artificial stainless steel canal with a 60° angle and 5-mm radius of curvature at intracanal temperature. The results were analyzed with 1-way analysis of variance and the post hoc Tukey test. The alpha-type error was set at 5%. Fracture instruments from torsion and fatigue tests were examined with a scanning electron microscope. Results: OR showed higher static fatigue resistance and rotation angle at fracture than WOG, OC, and PTN X2 (P < .05). WOG exhibited higher torsional resistance than the others (P < .05). The cyclic fatigue tests in dynamic mode had higher TTF than static for the PTN X2 and WOG groups (P < .05). In the dynamic tests, OR and WOG showed higher TTF than OC and PTN X2 (P < .05). Conclusions: Under these experimental conditions, One RECI exhibited suitable mechanical properties with the highest cyclic fatigue resistance and angle of rotation among the tested instruments. Keywords: Continuous rotation; One RECI; cyclic fatigue resistance; reciprocating motion; torsional resistance.

Workaholism is an emerging form of behavioural addiction encountered in the workplace. The present study aims to assess the prevalence and the associated factors of this phenomenon in engineers.A cross sectional survey was conducted for two months by means of an online questionnaire of engineers practising in Tunisia. The evaluation of workaholism was based on the WART questionnaire (Work Addiction Risk Test).A total of 107 engineers have answered the questionnaire. The mean age of participants was 29.2±4.4 years. Computer engineers represented 32.7% of our sample. Most of engineers worked more than 8hours per day (45.8%) and less than 6 days per week (63.6%). A high risk of workaholism was noted in 42.1% of cases. Statistical analysis showed that workaholism was not associated with socio-demographic characteristics. However, it was associated with smoking cigarettes, psychotropic drug consumption and poly-addiction and inversely associated with the presence of a leisure activity. With regard to occupational factors, workaholism was associated with agronomic engineering, working more than 8hours per day, working the whole week and a job satisfaction score under 5/10.Workaholism interested a significant proportion of this sample, and several professional factors could increase the likelihood of adopting this behaviour. The intervention of occupational doctors seems important in order to raise awareness about this form of addiction and to identify its early signs among employees.

Essential oils are well known to act as biopesticides in pest management programs. The main purpose of this research is to explore the insecticidal potential (fumigant and repellent toxicity) of binary mixtures of essential oils extracted from leaves of three Mentha species namely Mentha rotundifolia, M. viridis and M. longifolia collected from north Tunisia against adults of the rice weevil Sitophilus oryzae. Gas chromatography-mass spectrometry analyses revealed quantitative and qualitative variations among oils chemical composition. Three common compounds β-pinene (0.37–1.06%), α-limonene (0.32–18.39%) and pulegone (0.54–68,057%) were detected. Results showed that when applied alone, the oils exhibited a strong gradient of toxicity with M. rotundifolia being the most effective (CL50: 7.67 μL/L air) compared to M. longifolia (CL50: 12.32 μL/L air) and M. viridis oil (CL50: 100.16 μL/L air). In essential oils binary mixtures experiments, the combination M. rotundifolia x M. viridis exhibited the strongest insecticidal activity (CL50: 8.19 μL/L air) followed by M. rotundifolia x M. longifolia (CL50: 12.49 μL/L air) and M. longifolia x M. viridis (CL50: 19.36 μL/L air). Repellent toxicity was highly dependent upon oils binary mixture and concentrations. The mixture M. longifolia x M. viridis was more effective (PR = 40% at the concentration of 0.032 μl/cm2). Overall, this work demonstrates the interest of combing essential oils as a promising alternative to control S. oryzae in storage. This work promotes operating technologies of essential oils to better guide the biopesticide industry towards a sustainable development path.

Objectives: This study was conducted to determine frequency of contraceptive use, reasoning for not using any method and complications of various methods among low socioeconomic section of society. Study Design: Cross Sectional Observational study. Setting: Department of Obstetrics and Gynecology, Farooq Hospital, Westwood Branch, Lahore. Period: From 1st July 2019 to 31st December 2019. Material & Method: All married women between 18-40 years of age,having at least one child, presenting to gynae outdoor, were included in the study. Sample size was 408. Mean and standard deviation calculated for age and parity. Frequency and percentage of remaining variables calculated by using SPSS version 16. Results: Out of total 408 participants, 48.3% were in age range of 21-30 years and 86.5% were having parity of ≥ 2. 47.5% participants were illetrate and 52.5% were having different level of education. 53% participants were not using any contraception and only 47% were practicing contraception. Most commonly used method among users were interval IUCD (32.3%) and barrier method (30.2%). Least common method used was Implanon (1.04%). Most common reasons among nonusers were lack of knowledge (30.5%) and fear of side effects (21.7%). Least common reasons were myths and false beliefs (8.8%). Common complications among users were menstrual irregularity (29.6%),vaginal discharge (12%) and failure of method leading to conception (7.8%). Conclusion: There is need for strong implementation of government family planning policies and motivation of couples through media and health personnel to achieve effective use of contraceptives.

Compensation is the effect of liability, which means, the penalty for breach of an obligation. When the liability of the air carrier is realized, the damage is incurred in the event of physical damage to the passenger (safety obligation), loss, damage or loss of goods or baggage Registered) and the delay in the implementation of the air transport contract. Compensation is estimated to the extent of damage, which is customary in the jurisprudence is between the two articles(1048) to(1168) of civil law no.(40) for the year(1951), but in the field of air transport the legislator has departed from this rule, having set a maximum compensation for the carrier responsible, In charging the carrier with liability for the entire damage (unlimited liability), the carrier may lead to the abyss of bankruptcy, thus depriving the carrier of its work in this important economic facility, while the international legislator did not neglect the passenger or shipper, as did not allow the derogation from the ceiling set by International agreements, so as to find a balance between the parties to the contract of carriage.may be modefid the article(1119) in civil law. The international legislator has endeavored to maintain the limited liability of the air carrier as long as it is good faith, but when it becomes ill-intentioned it becomes liable for the full damage and does not benefit from limited liability, and if the parties agree that compensation for the full damage is possible, because it does not contravene the public order.

Resume Objectif Nouer une alliance therapeutique est indeniablement un element fondamental dans la demarche therapeutique. Nous nous proposons d’etudier les differents facteurs pouvant influencer l’empathie du medecin notamment sa personnalite. Methode C’est une etude transversale realisee aupres des medecins de famille de la sante publique exercant a Sfax. Nous avons recueilli les donnees personnelles et professionnelles a l’aide d’un questionnaire preetabli. Nous avons utilise l’echelle Jefferson d’empathie et l’echelle « Big five » pour l’etude de la personnalite. Resultats L’âge moyen des medecins a ete de 45,35 ans. La moyenne des scores d’empathie a ete de 96,24. Nous avons trouve que la pratique d’activite de loisir a ete le facteur le plus predictif de l’empathie clinique (p = 0,03, β = −0,254, R2 = 24,1 %). La pratique d’activite de loisir, la charge des enfants et le temps consacres a l’entourage y ont ete associes (p = 0,005, β = −0,328 ; p = 0,042, β = −0,324 et p = 0,015, β = −0,287). Le fait d’avoir des connaissances en psychotherapie a ete significativement associe a la dimension « prise de perspective » (p = 0,012, β = −0,298, R2 = 30,4 %). Le nombre d’heure de travail a ete le facteur predictif de la dimension « se mettre a la place du patient » (p = 0029, β = −0,323, R2 = 9,4 %). Discussion Malgre les limites de notre enquete, les resultats ont permis de mettre en avant le lien entre empathie, le bien-etre professionnel et les traits de la personnalite relatifs a l’extraversion et l’agreabilite chez le medecin de famille. Ce qui est concordant avec certaines etudes. Conclusion Notre travail a permis de mettre en evidence les determinants de l’empathie. Le bien-etre du medecin lui permet une meilleure communication mais egalement une meilleure ecoute et une meilleure empathie. Reste a developper par la suite les differentes methodes et techniques pouvant ameliorer l’empathie en fonction de la personnalite du medecin.

Nowadays, the huge number of smart connected objects and the massive data amount produced require intelligent approaches for their management and supervision. Accordingly, Software Defined Networking (SDN) is considered as a promising paradigm for Internet of things (IoT) management. The IoT is now involved deeply in our daily activities and influences considerably our life style; from the way we drive, to how we make purchases or even what we should eat or not to maintain our health etc. The diversity of IoT related applications necessitates flexible, agile and adaptable IoT architecture. To meet this requirement, the design of IoT architecture based on SDN involves decoupling control plane from data plane to integrating intelligent management functionalities. In this context, this survey highlights the IoT network management functionalities and studies the correlation between SDN and IoT with focuses the role played by SDN to improve the management effectiveness of IoT networks. Furthermore, deep investigation is elaborated related to the SDN-IoT architectures and applications and some open issues and future research directions are provided.

Human Activity Recognition (HAR) is one of the critical subjects of research in health and human machine interaction fields in recent years. Algorithms such as Support Vector Machine (SVM), K-Nearest Neighbors (K-NN), Decision Tree (DT) and many other algorithms were previously implemented to serve this common goal but most of the traditional Machine learning proposed solutions were not satisfying in term of accuracy and real time testing process. For that, a human activities analysis and recognition system with an embedded trained ANN model on Raspberry PI for an online testing process is proposed in this work. This paper includes a comparative study between the Artificial Neural Network (ANN) and the Recurrent Neural Network (RNN), using signals produced by the accelerometer and gyroscope, embedded within the BlueNRG-Tile sensor. After evaluate algorithms performance in terms of accuracy and precision which reached an accuracy of 82% for ANN and 99% for RNN, obtained ANN model was implemented in a Raspberry PI for real-time predictions. Results show that the system provides a real-time human activity recognition with an accuracy of 86%.

Wrist-based fall detection system provides a very comfortable and multi-modal healthcare solution, especially for elderly risking falls. However, the wrist location presents a very challenging and unstable spot to distinguish falls among other daily activities. In this paper, we propose a Supervised Dictionary Learning approach for wrist-based fall detection. Three Dictionary learning algorithms for classification are invoked in this study, namely SRC, FDDL, and LRSDL. To extract the best descriptive representation of the signal data we followed different preprocessing scenarios based on accelerometer, gyroscope, and magnetometer. A considerable overall performance was obtained by the SRC algorithms reaching respectively 99.8%, 100%, and 96.6% of accuracy, sensitivity, and specificity using raw data provided by a triaxial accelerometer, accordingly overthrowing previously proposed methods for wrist placement.

One of the key goals of future 5G networks is to incorporate many different services into a single physical network, where each service has its logical network isolated from other networks. Besides, Network Slicing (NS) is considered as the key technology for meeting the service requirements of diverse application domains. Recently, NS faces several algorithmic challenges for 5G networks. This paper provides a review related to NS architecture with a focus on relevant Management and Orchestration (MANO) architecture across multiple domains. In addition, this survey paper delivers a deep analysis and a taxonomy of NS algorithmic aspects. Finally, this paper highlights some of the open issues and future directions.

Lateral opening wedge distal femoral osteotomy (LOWDFO) is indicated for isolated lateral osteoarthritis in the valgus morphotype. Medial hinge fracture is a factor for poor prognosis. The present study had two aims: 1) to assess the impact of a temporary K-wire on hinge fracture risk; and 2) to assess the impact of LOWDFO opening speed.The main study hypothesis was that a temporary hinge K-wire reduces hinge fracture risk. The second hypothesis was that faster opening speed increases fracture risk.Twenty femurs were produced by 3D printing from a CT database, reproducing LOWDFO anatomy. The ABS® polymer showed the same breaking-point behavior as human bone. Ten specimens were included in the "K-wire" group (KW+) and 10 in the "No K-wire" group (KW-). To determine high and low speed, a motion-capture glove was used by 2 operators, providing 3D modeling of the surgeon's hand. High speed was defined as 152mm/min and low speed as 38mm/min. The KW+ and KW- groups were subdivided into high- and low-speed subgroups (HS, LS) of 5 each. Compression tests were conducted using an Instron® mechanical test machine up to hinge fracture. The main endpoint was maximum breaking-point force (N); the secondary endpoints were maximum displacement (mm) and maximum speed (min) at breaking point.The K-wire significantly increased maximum breaking-point force (LS, 143.08N vs. 93.71N, p0.01; and HS, 186.98N vs. 95.22N, p0.01), but not maximum displacement (LS, 26.17mm vs 24.11mm, p= 0.31; and HS 26.18mm vs. 23.66mm, p=0.14) or maximum time (LS, 27.07sec vs. 24.94sec, p=0.31; and HS, 5.24sec vs. 4.73sec, p=0.14). Speed did not affect maximum force (KW+, 143.08N vs. 186.98N, p= 0.06; and KW-, 93.71N vs. 95.22N, p=0.42) or maximum displacement (KW+, 26.17mm vs. 26.18mm, p=1; and KW-, 24.11mm vs. 23.66mm, p=0.69). Only maximum time was greater at low speed (KW+, 27.07sec vs. 5.24sec, p0.01; and KW-, 24.94sec vs. 4.73sec, p0.01), which is obvious for constant distance.The first study hypothesis was confirmed, with significantly lower hinge fracture risk with the K-wire, independently of opening speed. The second hypothesis was not confirmed. The study was performed under strict experimental conditions, unprecedented to our knowledge in the literature. However, complementary clinical studies are needed to confirm the present findings.IV, experimental study.

Background. Acute hypercapnic respiratory failure (AHRF) is a common life-threatening event in patients with obesity hypoventilation syndrome (OHS). Objectives. To study the clinical pattern, noninvasive ventilatory support, as well as the short- and long-term outcomes of patients with OHS admitted in a ward because of AHRF. Methods. We conducted a retrospective cohort study including all adults with OHS aged ≥ 18 − year − old , admitted in a 90-bed-ward for AHRF. Results. A total of 44 patients were included. Fifteen (34.1%) and 29 (65.9%) patients were diagnosed with malignant OHS (mOHS) and nonmalignant OHS (non-mOHS), respectively, while 36 (81.8%) had coexisting obstructive sleep apnea hypopnea syndrome (OSAHS). Patients with mOHS had a significantly higher rate of heart failure (100% vs. 31%; p < 0.001 ), chronic renal insufficiency (CRI) (73.3% vs. 41.4%; p = 0.04 ), and dyslipidemia (66.7% vs. 34.5%; p = 0.04 ) than those with non-mOHS. The mean forced vital capacity (FVC) in our patients was of 59.5 % ± 18.5 of the predicted value, lower than what is usually reported in stable patients with OHS. At hospital admission, more than two-thirds ( n = 34 , 77.3%) were misdiagnosed as having asthma exacerbation ( n = 4 , 4.9.1%), chronic obstructive pulmonary disease (COPD) exacerbation ( n = 12 , 27.3%) and/or heart failure ( n = 29 , 65.9%). Acute pulmonary oedema (ACPE) ( n = 16 , 36.4%) and acute viral bronchitis ( n = 12 , 27.3%) were the main identified causal factors, while no cause could be determined in 5 (11.4%) patients. Noninvasive positive pressure ventilation (NIPPV) using bilevel positive airway pressure (BIPAP) was very highly effective to treat AHRF, with only 2.27% of patients failing the modality. Median overall duration of ventilation was 9 hours per day (1.3–20) and was significantly longer in patients with mOHS than in those with non-mOHS (10 [6–18] vs. 8 [1.3–20], respectively; p = 0.01 ). Forty two of the forty-three patients discharged alive were treated with BIPAP or continuous positive airway pressure (CPAP) in 26 and 16 patients, respectively. The probability of survival was 90% at 12 months, while the probability of readmission for a new episode of AHRF was 56% at 6 months and 22% at 12 months, respectively. Conclusion. AHRF in OHS patients is a life-threatening event which can be successfully and safely treated with BIPAP, with a low long-term mortality even in patients with mOHS.