41 research outputs found

    Characteristics of the Audit Processes for Distributed Informatics Systems

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    The paper contains issues regarding: main characteristics and examples of the distributed informatics systems and main difference categories among them, concepts, principles, techniques and fields for auditing the distributed informatics systems, concepts and classes of the standard term, characteristics of this one, examples of standards, guidelines, procedures and controls for auditing the distributed informatics systems. The distributed informatics systems are characterized by the following issues: development process, resources, implemented functionalities, architectures, system classes, particularities. The audit framework has two sides: the audit process and auditors. The audit process must be led in accordance with the standard specifications in the IT&C field. The auditors must meet the ethical principles and they must have a high-level of professional skills and competence in IT&C field.informatics audit, characteristic, distributed informatics system, standard

    Secure Electronic Cards in Public Services

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    The paper presents the electronic wallet solution implemented within a GSM SIM technology for accessing public services. The solution is implemented in the medical field to provide information on the patient's medical history and payment for private medical services. The security issue is a very important one as the patient's history is confidential and the payment has to be safe.public services, mobile, security, m-application, smart card

    IoT Security Approaches in Oil & Gas Solution Industry 4.0

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    Oil and Gas Industry is a very complex one where very specialized equipment, tools and assets are used. The last years, the trend within that industry is to integrate digital technologies in the oil and gas extraction processes as ICT performance has increased and the price has declined. As effect, the productivity of the industry has increased by using digital technologies as IoT, cloud computing, industrial internet, artificial intelligence, block-chain etc. This paper highlights IoT approaches and solutions that could be applied in the oil and gas industry in creating new value in information generated by IoT infrastructures by integration the sensor data, communication channels and data analytics. Large variety of IoT deployments and protocols raises the IoT security assurance way. In this sense, the paper provides security solutions and examples

    Secure Electronic Cards in Public Services

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    The paper presents the electronic wallet solution implemented within a GSM SIM technology for accessing public services. The solution is implemented in the medical field to provide information on the patientñ€Âℱs medical history and payment for private medical services. The security issue is a very important one as the patientñ€Âℱs history is confidential and the payment has to be safe

    Exploring Perceptions and Practices in Organizing University Scientific Research

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    he development of transdisciplinary projects, crucial in the context of the complex challenges facing society. The organization of scientific research must prioritize the human factor and involve establishing the departments involved in university scientific research and the connections between them. This paper presents the perceptions of academic staff at a medical university regarding the organization and implementation of research within the university and the sources of research funding. The results highlight a clear orientation towards interdisciplinary research, albeit conducted within the organization itself, and a weak prioritization of fundamental research. Additionally, funding through international grants is seen as less accessible than national funding, despite the medical field being considered a priority in the funding programs. The research findings are relevant for decision-makers in the field of research funding at both the national and organizational levels

    Comparative study on the lateral run-out of friction surfaces measurement of brake discs using a brake roller tester and a dial gauge

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    Brake system diagnosis is one of the most common and necessary technical operations applied to the car, regardless of its type and operating phases. Measuring the diagnostic parameters on a roller brake tester is a fast operation with no disassembly necessary. Measuring the run-out of friction surfaces of brake discs with a dial gauge is an action that requires more extensive preparatory operations but it offers a high accuracy of the results. The paper aims to analyze the correlation between the dial gauge measured values and the diagnostic obtained using the brake roller tester

    Maßtrise des interfaces hétérogÚnes lors d'une opération de soudo-brasage (application au couple aluminium - magnésium)

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    Les travaux concernent l'Ă©tude de l assemblage dissimilaire d alliages d'aluminium (Al4043, Al5356) et de magnĂ©sium (RZ5, AZ31) par les procĂ©dĂ©s CMT et laser. La mĂ©thode des plans d'expĂ©riences statistiques a Ă©tĂ© mise en oeuvre afin d'analyser les effets des paramĂštres opĂ©ratoires de soudage et la nature chimique des substrats et des fils d apport. Les effets chimiques, thermomĂ©caniques et Ă©nergĂ©tiques ont Ă©tĂ© Ă©tudiĂ©s dans l'objectif de contrĂŽler et de diminuer l Ă©paisseur de la couche intermĂ©tallique formĂ©e entre la zone fondue et le mĂ©tal de base et considĂ©rĂ©e comme critique pour la fissuration. La microstructure a Ă©tĂ© caractĂ©risĂ©e par microscopie optique, MEB, EDS, rayons X, duretĂ© et nano-indentation.La rupture dans la couche d interface est liĂ©e Ă  la formation de composĂ©s intermĂ©talliques (Al3Mg2, Al12Mg17), d'une duretĂ© jusqu Ă  350 HV0,025, ainsi qu'Ă  l'Ă©paisseur de la couche et des Ă©lĂ©ments d'alliage. Le RZ5 a Ă©tĂ© assemblĂ© avec succĂšs avec le fil d apport Al4043 par les deux procĂ©dĂ©s CMT et laser.Suite Ă  l analyse systĂ©matique des rĂ©sultats, qui montre un meilleur comportement d Al4043/RZ5 qui contient du zirconium, l'ajout de cet Ă©lĂ©ment dans la zone fondue a permis de montrer une amĂ©lioration de la qualitĂ© des joints par effet sur la microstructure.Pour l assemblage laser, une modification des conditions des vitesses de refroidissement par un pompage thermique plus rapide par l utilisation d un support de plaques de cuivre a induit une modification des couches d'interface et montre tout l'intĂ©rĂȘt de maĂźtriser les conditions opĂ©ratoires. Par ailleurs, une vibration ultrasonore des substrats a Ă©tĂ© testĂ©e pour modifier la formation des zones problĂ©matiquesThis work concern a study of the dissimilar joining of aluminium (Al4043, Al5356) and magnesium (RZ5, AZ31) by CMT and laser welding process. The method of statistical design of experiments has been implemented in order to analyse the effects of the technological welding parameters and the chemical nature of the base and filler metal. The chemical, thermo-mechanical and energetic effect were studied with the aim to control and decrease the thickness of the intermetallic layer formed between the melted zone and the base metal and considered to be critical to cracking. The microstructure was studied by optical and SEM microscopy, EDS, X-ray, hardness and nanoindentation.The fracture produced in the interface layer has been related to the intermetallic compounds (Al3Mg2 and Al12Mg17), with a hardness up to 350 HV0.025, as well of the thickness of the interface layer and to the alloying composition. The RZ5 as base metal was successfully joined with the Al4043 welding wire, in both CMT and laser process.According to the systematically analyse, who shows a better welding ability of the couples Al4043/RZ5, which contains zirconium, by the adding of this element in the molten metal the welding ability improvement was showed.For the laser joining, a modification of the cooling condition by a accelerate thermal cycle, by using a copper support for the base metal was induce a modification of the interface layer, showing the interest of mastering the technical condition. Moreover, a ultrasonically vibration of the base metal was tested in attempting to modify the formation of the problematical zonesDIJON-BU Doc.Ă©lectronique (212319901) / SudocSudocFranceF

    Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

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    Abstract Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries

    Mastering of dissimilar interfaces by braze welding process : application for aluminium - magnesium couple

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    Les travaux concernent l'Ă©tude de l’assemblage dissimilaire d’alliages d'aluminium (Al4043, Al5356) et de magnĂ©sium (RZ5, AZ31) par les procĂ©dĂ©s CMT et laser. La mĂ©thode des plans d'expĂ©riences statistiques a Ă©tĂ© mise en oeuvre afin d'analyser les effets des paramĂštres opĂ©ratoires de soudage et la nature chimique des substrats et des fils d’apport. Les effets chimiques, thermomĂ©caniques et Ă©nergĂ©tiques ont Ă©tĂ© Ă©tudiĂ©s dans l'objectif de contrĂŽler et de diminuer l’épaisseur de la couche intermĂ©tallique formĂ©e entre la zone fondue et le mĂ©tal de base et considĂ©rĂ©e comme critique pour la fissuration. La microstructure a Ă©tĂ© caractĂ©risĂ©e par microscopie optique, MEB, EDS, rayons X, duretĂ© et nano-indentation.La rupture dans la couche d’interface est liĂ©e Ă  la formation de composĂ©s intermĂ©talliques (Al3Mg2, Al12Mg17), d'une duretĂ© jusqu’à 350 HV0,025, ainsi qu'Ă  l'Ă©paisseur de la couche et des Ă©lĂ©ments d'alliage. Le RZ5 a Ă©tĂ© assemblĂ© avec succĂšs avec le fil d’apport Al4043 par les deux procĂ©dĂ©s CMT et laser.Suite Ă  l’analyse systĂ©matique des rĂ©sultats, qui montre un meilleur comportement d’Al4043/RZ5 qui contient du zirconium, l'ajout de cet Ă©lĂ©ment dans la zone fondue a permis de montrer une amĂ©lioration de la qualitĂ© des joints par effet sur la microstructure.Pour l’assemblage laser, une modification des conditions des vitesses de refroidissement par un pompage thermique plus rapide par l’utilisation d’un support de plaques de cuivre a induit une modification des couches d'interface et montre tout l'intĂ©rĂȘt de maĂźtriser les conditions opĂ©ratoires. Par ailleurs, une vibration ultrasonore des substrats a Ă©tĂ© testĂ©e pour modifier la formation des zones problĂ©matiquesThis work concern a study of the dissimilar joining of aluminium (Al4043, Al5356) and magnesium (RZ5, AZ31) by CMT and laser welding process. The method of statistical design of experiments has been implemented in order to analyse the effects of the technological welding parameters and the chemical nature of the base and filler metal. The chemical, thermo-mechanical and energetic effect were studied with the aim to control and decrease the thickness of the intermetallic layer formed between the melted zone and the base metal and considered to be critical to cracking. The microstructure was studied by optical and SEM microscopy, EDS, X-ray, hardness and nanoindentation.The fracture produced in the interface layer has been related to the intermetallic compounds (Al3Mg2 and Al12Mg17), with a hardness up to 350 HV0.025, as well of the thickness of the interface layer and to the alloying composition. The RZ5 as base metal was successfully joined with the Al4043 welding wire, in both CMT and laser process.According to the systematically analyse, who shows a better welding ability of the couples Al4043/RZ5, which contains zirconium, by the adding of this element in the molten metal the welding ability improvement was showed.For the laser joining, a modification of the cooling condition by a accelerate thermal cycle, by using a copper support for the base metal was induce a modification of the interface layer, showing the interest of mastering the technical condition. Moreover, a ultrasonically vibration of the base metal was tested in attempting to modify the formation of the problematical zone

    The importance of knowledge on the evaluation criteria in university scientific research projects

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    Scientific research is part of any university mission, at least of big universities, as it represents the complementary element required by the learning process. A learning process based on engendering knowledge is much more valuable and competitive than a learning process which is reduced to a mere transfer of knowledge from the teacher to the students. The important universities consider that “the development of scientific research as a fundamental competence is essential for survival in a more and more competitive environment on global level and that is why, research should be part of the university mission”1. This study aims to highlight how important it is for the university members to be aware of the evaluation criteria for the research projects they undertake. For this purpose, I have interviewed a number of 55 persons, project managers and team members in the projects from the “Research for Excellency” program and the National Plan of Research, Development and Innovation PN II 2007 – 2013. Out of the evaluation criteria for research, the most important ones were considered to be the scientific quality of the project and the quality of the human resources involved in the project.evaluation, evaluation criteria, scientific research, research project
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