Relevant bibliographies by topics / MFA Systems

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Academic literature on the topic 'MFA Systems'

Author: Grafiati
Published: 7 June 2025
Last updated: 26 June 2025

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Journal articles on the topic "MFA Systems"

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Karim, Nader Abdel, Hasan Kanaker, Waleed K. Abdulraheem, Majdi Ali Ghaith, Essam Alhroob, and Abdulla Mousa Falah Alali. "Choosing the right MFA method for online systems: A comparative analysis." International Journal of Data and Network Science 8, no. 1 (2024): 201–12. http://dx.doi.org/10.5267/j.ijdns.2023.10.003.

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A robust authentication method is needed to protect online user accounts and data from cyber-attacks. Using only passwords is insufficient because they can be easily stolen or cracked. Multi-factor authentication (MFA) increases security by requiring two or more verification factors from the user before granting access to a resource such as an online account or an application. MFA is essential to a strong identity and access management (IAM) policy. This study evaluates and contrasts several MFA methods for online systems, including Microsoft Authenticator, FIDO2 security keys, SMS, voice calls, and biometrics. We assess these methods based on four criteria: security, usability, cost, and compatibility. We discover that only some MFA methods excel across the board. The best MFA method will depend on the organization's and users' specific needs and preferences. Each MFA method has benefits and drawbacks on its own. Based on our analysis, we do, however, make some general observations and recommendations, such as preferring FIDO2 security keys and certificate-based authentication for high-security scenarios, choosing Microsoft Authenticator and biometrics for high-usability scenarios, and avoiding SMS and voice calls for low-security and low-usability scenarios.
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Xu, Jianliang, Zhen Sui, Feng Xu, and Yulong Wang. "A Novel Model-Free Adaptive Proportional–Integral–Derivative Control Method for Speed-Tracking Systems of Electric Balanced Forklifts." Applied Sciences 13, no. 23 (2023): 12816. http://dx.doi.org/10.3390/app132312816.

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Similar to many complex systems, the operation process of electric balanced forklifts has characteristics such as time-varying model parameters and nonlinearity. Establishing an accurate mathematical model becomes challenging, making it difficult to apply model-based control methods in engineering practice. Aiming at the longitudinal control system of electric forklifts containing external disturbances, this paper proposes an improved full-format dynamic linearization model-free adaptive PID control (iFFDL-MFA-PID) method. Firstly, the full-format dynamic linearization (FFDL) method is employed to transform the operating system of the electric balanced forklift into a virtual equivalent linear data model. Secondly, the nonlinear residual term and pseudo-gradient (PG) of the data model are estimated using the difference estimation algorithm and the optimal criterion function, respectively. Furthermore, in order to enhance the robustness of the system, the idea of intelligent PID (iPID) is introduced and the principle of equivalent feedback is utilized to derive the iFFDL-MFA-PID control scheme. The design process of this scheme only requires the use of the input and output data of the system, without relying on the mathematical model of the system. Finally, the iFFDL-MFA-PID method proposed in this paper is simulated and tested with the EFG-BC/320 counterbalanced forklift equipped in the Special Equipment Testing Center and compared with the model-free adaptive control method (FFDL-MFAC) and the PID control method. Simulation results show that the speed-tracking error of the electric forklift truck under the action of the iFFDL-MFA-PID algorithm is maintained within ±0.132 m/s throughout the process, achieving higher tracking accuracy and better robustness compared to the MFAC and PID methods.
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Che Mamat, Rufaizal, Azuin Ramli, Abd Hakim Abd Aziz, Muhammad Daniel Hakim Azhari, and Angelyna Jackson. "A Comparative Analysis of Fly Ash Enhanced Micropiles in Sustainable Foundation Systems." Smart and Green Materials 2, no. 1 (2025): 35–46. https://doi.org/10.70028/sgm.v2i1.35.

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The construction industry is increasingly pressured to adopt sustainable practices that reduce environmental impact while ensuring structural integrity. This study investigates the comparative performance and sustainability of micro piles constructed with fly ash-enhanced grout mixtures (MFA) and conventional micro piles (MC). Fly ash, an industrial by-product is incorporated into the grout mixture to improve sustainability and enhance soil-structural stability. Comprehensive site investigations and numerical simulations were conducted to evaluate critical performance metrics, including Factor of Safety (FoS), deformation, settlement, and strain distribution, during pre- and post-construction phases. The results demonstrate that MFA systems exhibit superior performance, characterized by higher FoS, reduced deformation, and enhanced stability in settlement and strain profiles. These findings indicate that MFA delivers structural benefits and contributes to sustainability by utilizing waste materials. The study underscores the potential of MFA as a viable alternative to traditional micro pile systems, offering significant environmental and performance advantages. Further research is recommended to assess MFA systems' long-term performance and scalability in diverse geotechnical applications.
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Baseer, Shagufta. "Multi-Factor Authentication: A User Experience Study." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 06 (2024): 1–5. http://dx.doi.org/10.55041/ijsrem36006.

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Usability issues prevent multi-factor authentication (MFA) systems from being widely used, despite the fact that they are essential for improving security measures. This study explores the problems with MFA systems' usability and suggests possible fixes to enhance the user experience. The study emphasizes the value of good design while highlighting the efficacy of graphical password systems as a user-friendly substitute for conventional MFA techniques. The report also makes recommendations for future research directions, such as assessing resilience against complex assaults, improving support for mobile applications, and weighing the benefits and drawbacks of image-based authentication systems. Comprehensive user research and assessments can yield important insights to improve the effectiveness and usability of different MFA approaches. Additionally, a two-way image-based mobile device authentication system devices is introduced in the article, demonstrating improved login success rates and security threat resistance. In order to further enhance the authentication process, future development will focus on scalability, user input surveys, and bolstering system security. Keywords: Multi-Factor Authentication (MFA), User Experience (UX), Security, Usability, Graphical Passwords, Biometric Authentication, Mobile Devices, Image- Based Authentication, Psychological Aspects, Resilience,Scalability, Advanced Security Features
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Zhang, Shuhua, and Ronghu Chi. "Model-free adaptive PID control for nonlinear discrete-time systems." Transactions of the Institute of Measurement and Control 42, no. 10 (2020): 1797–807. http://dx.doi.org/10.1177/0142331219896649.

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This work explores a model-free adaptive PID (MFA-PID) control for nonlinear discrete-time systems with rigorous mathematical analysis under a data-driven framework. An improved compact form dynamic linearization (iCFDL) is proposed to transfer the original nonlinear system into an affined linear data model including a nonlinear residual term. Both a time-difference estimator and a gradient parameter estimator are designed to estimate the nonlinear residual uncertainties and the unknown parameters in the iCFDL model. Subsequently, a novel improved CFDL based MFA-PID (iCFDL-MFA-PID) control is proposed by incorporating these two estimators. The results are extended by the use of improved partial format dynamic linearization (iPFDL) and full format dynamic linearization (iFFDL). The theoretical results are shown using contraction mapping principle-based mathematical analysis, as well as simulations.
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Allafi, Randa, and Abdulbasit A. Darem. "Usability and security in online authentication systems." International Journal of ADVANCED AND APPLIED SCIENCES 12, no. 6 (2025): 1–12. https://doi.org/10.21833/ijaas.2025.06.001.

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This study examines the balance between usability and security in electronic online services by comparing the effectiveness and user experience of different authentication methods, including password-only authentication, multi-factor authentication (MFA), and biometric authentication. A mixed-methods approach was used to collect both quantitative and qualitative data through usability tests, surveys, semi-structured interviews, and case studies. The findings reveal a clear trade-off between usability and security. While MFA offers stronger protection, it poses usability challenges, especially for novice users who face more errors and take longer to complete tasks. In contrast, password-only authentication was faster and easier, but was seen as inadequate for protecting sensitive data. Biometric authentication emerged as the most preferred option, receiving high satisfaction ratings from both novice and experienced users due to its balance between ease of use and security. These results emphasize the importance of designing user-centered security solutions, such as increasing the adoption of biometric methods and simplifying MFA to enhance the user experience without sacrificing security. The study offers practical recommendations for developers and security professionals to create more accessible and secure online services.
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Matey, Pritesh. "Securing Backup Systems: Addressing Vulnerabilities with Encryption, MFA, and RBAC." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 01 (2025): 1–9. https://doi.org/10.55041/ijsrem41173.

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Backup systems are an essential part of data protection, ensuring that businesses can recover from data loss caused by accidental deletions, hardware failures, or cyberattacks. However, these systems are often overlooked when it comes to security, making them vulnerable to a range of risks. As organizations increasingly depend on backup data for continuity, addressing the vulnerabilities in these systems is critical. This study highlights common security threats like ransomware, insider attacks, and unauthorized access, and examines how advanced measures—such as encryption, Multi-Factor Authentication (MFA), and Role-Based Access Control (RBAC)—can mitigate these risks. Encryption secures backup data, MFA enhances authentication procedures, and RBAC restricts user access to minimize the impact of internal threats. The paper evaluates the effectiveness of these measures, discusses implementation challenges, and offers best practices for improving backup system security. The aim is to provide a roadmap for organizations to protect their backup infrastructure against evolving cyber threats. Keywords: Backup Systems, Cybersecurity, Encryption, MFA, RBAC, Insider Threats, Data Protection, Cloud Security, Risk Management
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Abdul Ghani, Latifah. "Use of a Socio-Ecological Framework and MFA to Assess the Resilience of Local Food Chain Systems." Proceedings of International Conference on Social Science, Political Science, and Humanities (ICoSPOLHUM) 3 (January 8, 2023): 00034. http://dx.doi.org/10.29103/icospolhum.v3i.151.

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This paper proposes the basic procedures to examine the biodiversity of food chain systems using cross-disciplinary methods based on social, ecological, and material dimensions. The application of SES and MFA methods to track internal and external disturbances in the food chain highlights some of the flaws and gaps in this decision support system approach. In contrast to the single method, this SES-MFA overlapping approach contributes more information, including the literature on local food governance. Furthermore, the SES-MFA method would offer recommendations to researchers and policy practitioners to manage changes in the food chain system to attain uninterrupted biodiversity sustainability.
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Shinde1, Aditya S. "Multi-Factor Authentication: A Comprehensive Review." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 06 (2025): 1–9. https://doi.org/10.55041/ijsrem50831.

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Multi-factor authentication (MFA) has become a fundamental security measure in modern information systems, significantly reducing the risk of unauthorized access. This paper reviews current literature, standards, and best practices to evaluate the effectiveness, implementation challenges, and future directions of MFA. MFA works by requiring two or more distinct credentials—such as knowledge (passwords), possession (tokens), or inherence (biometrics)—making it far more resilient than single-factor methods. Despite its security benefits, MFA introduces usability challenges, additional costs, and integration issues, especially with legacy systems. Biometric-based authentication offers convenience but raises concerns regarding user privacy and the secure storage of immutable biometric data. Organizations often face administrative overhead and user resistance due to increased complexity. Integration strategies such as federated identity management are discussed for supporting older environments. The paper also explores emerging innovations, including adaptive authentication that adjusts based on contextual risk, password less approaches like passkeys, decentralized identity systems that empower users, and the influence of artificial intelligence and the Internet of Things on authentication mechanisms. The study concludes by identifying research opportunities in developing authentication systems that strike an optimal balance between security, usability, and privacy, and by calling for exploration into quantum-resistant authentication techniques. Key Words: Multi-factor authentication, cybersecurity, biometrics, passwordless, adaptive authentication, decentralized identity.
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AL-Khaleefa, Ahmad, Isa, AL-Saffar, Esa, and Malik. "MFA-OSELM Algorithm for WiFi-Based Indoor Positioning System." Information 10, no. 4 (2019): 146. http://dx.doi.org/10.3390/info10040146.

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Indoor localization is a dynamic and exciting research area. WiFi has exhibited a tremendous capability for internal localization since it is extensively used and easily accessible. Facilitating the use of WiFi for this purpose requires fingerprint formation and the implementation of a learning algorithm with the aim of using the fingerprint to determine locations. The most difficult aspect of techniques based on fingerprints is the effect of dynamic environmental changes on fingerprint authentication. With the aim of dealing with this problem, many experts have adopted transfer-learning methods, even though in WiFi indoor localization the dynamic quality of the change in the fingerprint has some cyclic factors that necessitate the use of previous knowledge in various situations. Thus, this paper presents the maximum feature adaptive online sequential extreme learning machine (MFA-OSELM) technique, which uses previous knowledge to handle the cyclic dynamic factors that are brought about by the issue of mobility, which is present in internal environments. This research extends the earlier study of the feature adaptive online sequential extreme learning machine (FA-OSELM). The results of this research demonstrate that MFA-OSELM is superior to FA-OSELM given its capacity to preserve previous data when a person goes back to locations that he/she had visited earlier. Also, there is always a positive accuracy change when using MFA-OSELM, with the best change achieved being 27% (ranging from eight to 27% and six to 18% for the TampereU and UJIIndoorLoc datasets, respectively), which proves the efficiency of MFA-OSELM in restoring previous knowledge.
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Dissertations / Theses on the topic "MFA Systems"

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Cuevas, Santamaría Sergio Axel. "My MFA Experience." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1524073680662621.

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Sundqvist, Nicolas. "Can you trust your model? A showcase study of validation in 13C metabolic flux analysis." Thesis, Linköpings universitet, Institutionen för medicinsk teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-156328.

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Cellular metabolism is one of the most fundamental systems for any living organisms, involving thousands of metabolites and reactions that forms large interconnected metabolic networks. Proper and comprehensive understanding of the metabolism in human cells has been a field of research for a long time. One of the key parameters in understanding the metabolism are the metabolic fluxes, which are the rates of conversion of metabolic intermediates. Currently, one of the main approaches for determining these fluxes is metabolic flux analysis (MFA), in which isotope-labelled compounds are introduced into the system and measured. Mathematical models are then used to calculate a prediction of the systems flux configuration. However, the current paradigm of MFA lack established methods for validating that a model can accurately predict quantities for which there are no experimental data. In this study, a model for the central human metabolism was created and evaluated with regards to the model’s ability to predict a validation dataset. Further, an uncertainty analysis of these predictions were performed with a prediction profile likelihood analysis. This study has conclusively shown that MFA models can be validated against experimental data that the model has never seen before. Additionally, such model predictions were shown to be observable with a well determined prediction uncertainty. These results shows that a systematic validation of MFA models is possible. This in turn allows for a greater trust to be placed in the models, and in any conclusions that are based on such models.
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Volsky, Uladzimir. "Prepare Russia to meet IPCC 2050, based on dynamic MFA approach for greenhouse gas emissions." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for vann- og miljøteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19217.

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An integrated MFA (Material Flow Analyse) model was developed for Russia, based on the year 2009. Integration was done between MFA, energy and greenhouse gas (GHG).Technologies in all production related processes of aluminium cycle were analyzed. Energy consumption and emissions were calculated throughout the aluminium cycle. This technology information and calculations were used in my scenarios for possible reduction of emissions.After the agreement with my supervisor the historical in-use stock was not done. Assumption here is that demand will increase.A sensitivity analyze was not conducted due the fact that that type of analyze can not be used for large changes in the system.If all scenarios are implemented then the decrease of total GHG emissions in aluminium production in Russia will equal to 22.3% and decrease in the total energy consumption will equal to 38,4%.
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Gracey, Erik. "MFA of omega-3 fatty acids EPA & DHA from a Norwegian resource perspective : Implications for future growth in fisheries and aquaculture toward 2050." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-27240.

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Much of the current research into the sustainability of the fisheries and aquaculture industry has focused on achieving continued growth. The report “Value creation from productive oceans,” makes annual growth predictions of 4% for aquaculture and 7% for the marine ingredients sector from 2010 to 2050. The Norwegian government incorporated these growth rates into a political vision presented to parliament as Meld.St.22 “the world’s foremost seafood nation.” Among many ambitions presented in Meld.St.22, three were chosen as being particularly relevant to industry ecology: import reliance, utilization of by-products and sustainable growth. These ambitions were tested along with the 4 and 7% growth rates from the “Value creation from productive oceans,” report using the industrial ecology methodology of material / substance flow analysis. The MFA/SFA model of the fisheries and aquaculture system used a multi-layered approach with a product weight layer as the base and EPA + DHA as the substance layer. Results for import reliance suggest that Norway is 88% reliant on imports (product weight) for aquaculture and 55% for marine ingredients (EPA + DHA). The model estimated that imported Peruvian Anchoveta represented approximately 50% of the EPA + DHA in Norwegian aquaculture feed and 55% for marine ingredients in 2012. By-product utilization was found to be nearly 100% for the aquaculture and pelagic sectors, 34% for whitefish species and nearly zero for macroalgae and marine mammals. The overall by-product utilization rate for Norway, including all Norwegian landed marine fish, zooplankton, macroalgae and marine mammals was 62% for product weight. Sustainability was assessed from an industry, consumer and general environmental perspective. Sustainability from an industry perspective was evaluated using a demand and supply forecast for EPA + DHA. Growth rates of 4% for aquaculture and 7% for marine ingredients were used to model the future supply and demand relative to the system calculated values in the base year (2012). Results suggest a shortage of EPA + DHA within two years and a 45% deficit in demand by 2020. The future EPA + DHA shortage was independently confirmed by a study performed by EWOS using similar parameters and assumptions. The whole fish FIFO for fish oil was calculated to be 1,3 kg of whole forage fish required for 1 kg of whole salmon. The efficiency of seafood deliverables indicator (ESD) was created to add an element of efficiency to the sustainability of seafood from a consumer perspective. The aquaculture industry was found to require 3,22 kg of EPA + DHA per kg of EPA + DHA delivered to consumers as seafood, while the wild fishery sector required 1,76 / kg. The overall findings suggest that EPA & DHA are critical nutrients for: Fish health, human health, industry growth and consumer preferences. The challenge posed by the worsening shortage of EPA & DHA will affect the sustainability of the industry and dialogue concerning realistic growth prospects is suggested.
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Soares, Inali Wisniewski. "PM-MDA: um método para o desenvolvimento de modelos de plataforma no contexto da MDA." Universidade Tecnológica Federal do Paraná, 2012. http://repositorio.utfpr.edu.br/jspui/handle/1/716.

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Esta tese propõe um método denominado PM-MDA para o desenvolvimento de Modelos de Plataforma (Platform Model - PM) no contexto da abordagem Model Driven Architecture (MDA). O método PM-MDA tem como foco o desenvolvimento de projetos de Software embarcado baseados em Sistemas Operacionais em Tempo Real (Real-Time Operating System - RTOS). Adicionalmente, este estudo define um perfil UML 2.0 para modelagem da aplicação e plataforma de software embarcado denominado Profile for modeling Application and Platform of Embedded Software (PROAPES) que é usado no método PM-MDA. Tal perfil define um conjunto de estereótipos para descrever genericamente Modelos de Plataforma e Modelos Independentes de Plataforma (Platform Independent Model - PIM). Além disso, são definidas extensões desse perfil, tal como o perfil PROAPESX que permite a modelagem de PMs para versões do RTOS X Real-Time Kernel e hardware associados. Além disso, o perfil PROAPES possibilita vincular um PIM a um PM, permitindo que esses modelos sejam inseridos como atributos de entrada em uma Transformação de Modelos. No contexto da MDA, esse perfil constitui-se em um metamodelo de plataforma (um metamodelo de uma família de plataformas similares) para a construção de modelos de plataforma. Desse modo, um PM é usado como parte fundamental para o desenvolvimento de software embarcado na abordagem MDA, fornecendo meios de obter independência de plataforma. Em abordagens atuais de MDA, as transformações de modelos empregam implicitamente os modelos de plataforma. Como os interesses referentes à plataforma não são separados dos interesses referentes às transformações de modelos, para cada plataforma requerida deve existir uma ou mais transformações de modelos correspondentes que são configuradas especificamente para aquela plataforma. O resultado são processos de transformações de modelos difíceis de serem automatizados. No domínio de sistemas embarcados, o uso de MDA é ainda mais importante devido à heterogeneidade de plataformas e à complexidade destes sistemas. O método PM-MDA, que faz uso do perfil PROAPES, visa sistematizar o processo de criação e disponibilização de modelos de plataforma separados do processo de transformação de modelos, possibilitando a geração de processos de transformações de modelos eficientes e adaptáveis.<br>This thesis proposes a method called PM-MDA for the development of Platform Models in the context of Model Driven Architecture (MDA). The PM-MDA method focuses on the development of embedded software projects based on Real-Time Operating Systems (RTOS). Additionally, this study defines a UML 2.0 Profile for Modeling Application and Platform of Embedded Software (PROAPES), which is used in the PM-MDA method. Such profile defines a set of stereotypes to generically describe Platform Models (PMs) and Platform Independent Models (PIMs). Further, extensions are defined in this profile, e.g. the PROAPESX profile, allowing the modeling of PMs into versions of the X RTOS Real-Time Kernel and associated hardware. In its turn, the PROAPES profile enables the link of a PIM to a PM, allowing these models to be entered as input attributes in a Model Transformation. In the context of MDA, this profile is a platform metamodel for building PMs, i.e., a metamodel of a family of similar platforms. In this way, a PM is used as a fundamental part in the development of embedded software in the MDA approach by providing means of obtaining platform independence. In current MDA approaches, model transformations implicitly employ PMs. As the concerns regarding the platform are not separated from the concerns related to model transformations, for each required platform there must be one or more corresponding model transformations that are configured specifically for that platform. This results in model transformation processes that are expensive and difficult to be automated. In some application domains such as embedded systems, the use of MDA is more motivating because of the heterogeneity of platforms and the complexity of these systems. The PM-MDA method, which makes use of the PROAPES profile, aims to systematize the process of creating and providing platform models separated from the model transformation process, enabling the generation of efficient and adaptable model transformations.
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Ambraziūnas, Martas. "Enterprise model based MDA information systems engineering method." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20141111_114310-77387.

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Although new methods of information systems engineering are being researched and developed, they are empirical in nature. The problem domain knowledge acquisition process relies heavily on the system analyst and user; therefore it is not clear whether the knowledge of the problem domain is comprehensive. This may lead to occurrence of logical gaps, misinterpretation of system requirements, thus causing issues for project. The research work is meant to develop new IS engineering method that will allow validation of the problem domain knowledge against formal criteria. In order to create such method basic principles of Knowledge Based ISE and Model Driven ISE were combined. By combining the two approaches Knowledge Based MDA method was created that extends traditional MDA with Enterprise Model. During the research Knowledge Based MDA tool’s prototype, that is capable of partly automating Knowledge Based MDA process, was created. The efficiency of Knowledge Based MDA method was validated by creating real life application for mobile devices. During the empirical research it was established that by using developed method software requirements quality is improved and comprehensive documentation is created (due to Enterprise Model based validation), occurrence of logical gaps between software development stakeholders is reduced, time consumption needed for creation of application for multiplatform systems is reduced (due to automated code generation and shorter testing stage).<br>Šiuolaikiniai IS inžinerijos metodai yra nuolat vystomi ir tobulinami, tačiau iš esmės jie yra grindžiami empiriniais procesais. Empiriškai išgautų žinių kokybė gali būti nepakankama sėkmingam projekto įgyvendinimui, nes netikslus vartotojo reikalavimų specifikavimas neigiamai įtakoja visus programinės įrangos kūrimo etapus, o tai didina projekto įgyvendinimo riziką. Disertacinis darbas skirtas sukurti IS inžinerijos metodą, kuris įgalintų empiriniais būdais surinktas dalykinės srities žinias patikrinti formalių kriterijų atžvilgiu. Metodui sukurti buvo apjungti žiniomis grindžiamos ir modeliais grindžiamos IS inžinerijos principai. Šiuo tikslu klasikinis MDA procesas buvo papildytas pagrindiniu žiniomis grindžiamos IS inžinerijos komponentu – veiklos modeliu. Darbo metu buvo sukurtas žiniomis grindžiamo MDA metodo dalykinės programos prototipas, kuris iš dalies automatizuoja siūlomo metodo procesą. Žiniomis grindžiamo MDA metodo efektyvumas buvo patikrintas jį taikant eksperimentinio tyrimo atlikimui, kurio metu buvo sukurta pašto siuntų stebėjimo programėlė. Tyrimo metu nustatyta, kad tikslinga taikyti žiniomis grindžiamą MDA metodą PĮ kūrime nes: 1) detaliau dokumentuojami vartotojo reikalavimai (tikrinami formalių kriterijų atžvilgiu); 2) sumažinama loginių trūkių atsiradimo galimybė (tarp programinės įrangos kūrimo dalyvių); 3) daugiaplatforminiuose sprendimuose sumažinamos projekto įgyvendinimo laiko sąnaudos (dėka automatinio kodo generavimo iš patikrintų modelių).
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MARIA, BEATRIZ ALVES DE. "MDA BASED APPROACH FOR DEVELOPING MULTI-AGENT SYSTEMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=6593@1.

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Sistemas multi-agentes (SMA) diferem de sistemas que não são baseados em agentes devido ao fato dos agentes serem unidades autônomas capazes de ações flexíveis e inteligentes. Por este motivo é proposto na literatura um grande número de metodologias, frameworks e linguagens para dar apoio a construção deste tipo de sistema. Muitas dessas metodologias e suas ferramentas provêm da comunidade de inteligência artificial e estão focadas em uma arquitetura específica de agentes. Este trabalho propõe o uso da arquitetura Model Driven Architecture (MDA), descrita pela OMG, no processo de desenvolvimento de SMA. MDA é uma arquitetura para desenvolvimento de software estruturada em etapas de modelagem que dá suporte a todo o ciclo de desenvolvimento de um sistema. O processo de desenvolvimento proposto está dividido de acordo com as etapas apresentadas por MDA. Na etapa PIM, onde são especificados modelos independentes de plataforma, propomos a utilização da linguagem de modelagem MAS-ML para SMA. Na etapa PSM, onde são definidos modelos específicos de plataforma, propomos utilizar a linguagem de modelagem UML. Os modelos MAS-ML definidos na etapa PIM são transformados em modelos UML na etapa PSM com base em um framework para implementação de SMA utilizando orientação a objetos. Na ultima etapa do desenvolvimento, o código da aplicação é gerado a partir dos modelos UML. Este trabalho detalha as etapas PIM e PSM do processo de desenvolvimento de SMA e as transformações necessárias para a geração de código. Para demonstrar a aplicação do processo proposto são apresentadas duas aplicações de SMA desenvolvidas utilizando o mesmo. Ao final, apresenta-se a ferramenta MAS-ML Tool desenvolvida para dar apoio ao processo de desenvolvimento proposto. Esta ferramenta implementa todas as etapas presentes no processo, permitindo assim a implementação de SMA a partir de sua modelagem.<br>Multi-agent systems (MAS) differ from non-agent systems because agents are intended to be autonomous units capable of flexible and intelligent actions. For this reason it is proposed in the literature a great number of methodologies frameworks and languages to support the development of these systems. Several methodologies and their tools are come from artificial intelligent community and are focused in a specific agent architecture. This work proposes the use of the Model Driven Architecture (MDA), described by OMG, in the development process of MAS. MDA specifies a structured software development process in modeling stages that supports all system development life cycle. The proposed development process is divided according to the MDA stages. In PIM stage, where platform independent models are specified, we propose the use of MAS-ML modeling language for MAS. In PSM stage, where platform specific models are specified, we propose the use of UML modeling language. The MASML models defined on PIM stage are transformed in UML models at PSM stage, based on an object-oriented framework for implementing MAS. In the last development stage, the application code is generated from UML models. This work details the PIM and PSM stages of the MAS development process and the models transformations to generate source code. To exemplify the applicability of the proposed MAS development process, two different MAS applications were developed based on the process. Finally, a MAS-ML tool is presented. Such tool was developed to support the proposed development process. The tool implements all stages presented in the process, allowing the modeling and implementation of MAS.
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Reichelt, Toni. "A Model Driven Approach for Service Based System Design Using Interaction Templates." Doctoral thesis, Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-85986.

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Based on the increasing complexity of modern avionics, the associated system design processes moved towards Model Driven Architecture (MDA) based processes. Additionally, the demand for higher system autonomy features requires means to further modularise mission systems and to define and establish interactions among the systems’ individual components. Therefore, the ideas of service-oriented computing are currently adapted to established, model driven design processes. With respect to modelling interactions for service components, current approaches are limited to only a fixed set of communication primitives, restricting a service designer’s expressiveness to specify service interaction. In consequence, interaction patterns not included in this basic set have to be reflected in application code, mangling application and communication logic. Furthermore, when service functionality relies on communication semantics which are not provided by the underlying set of primitives, additional emulation behaviour has to be added to the service which makes this mangling even worse. Platform independence is reduced as services can not easily be ported to platforms not natively supporting the selected primitives which contradicts the ideas of model-driven development. Addressing these limitations, this thesis proposes a new model-driven service development process based on Interaction Templates (ITs), promoting interactions among service participants to first class modelling entities. The process focuses on modelling the interactions among service participants. Interaction semantics are explicitly specified in models, beyond pure stereotyping, and gain increased platform independence for services with respect to communication. The process exploits automated Model-to-Model (M2M) and Model-to-Text (M2T) transformations to assist service implementation and to automatically derive interaction realisations on concrete target platforms. This allows for easy replacement and inter-mixing of communication middleware to realise a service’s interactions. This way, services become independent of the underlying communication primitives by only relying on ITs and not platform primitives which are hidden behind ITs. In turn, realising ITs on concrete platforms is not affected by their utilisation for service interaction. Beside the novel modelling process itself, the presented work defines a Unified Modeling Language (UML) profile, referred to as UML Profile for Interaction-centric Services (UP4IS), which directly supports the adaptation of standard UML language constructs and tools for the proposed modelling approach. The whole development process is demonstrated via the specification of a simple video recording systems consisting of two services. The services themselves are based on a representative IT library which forms an essential part of the presented case study. Using these service and IT models, the thesis emphasises the necessary model transformation and code generation steps to derive service implementations based on the abstract models.
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Gruszka, Robert. "MDA Approach in Real-Time Systems Development with Ada 2005." Thesis, Blekinge Tekniska Högskola, Avdelningen för programvarusystem, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5403.

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Over the years, number of design methodologies were developed. One of the state-of-the-art modeling approaches is Model Driven Architecture. This thesis is an attempt to utilize the MDA in a specific and complex domain – real-time systems development. In MDA framework there are three levels of abstraction: computation independent, platform independent and platform specific. The target environment of the method presented in the thesis is Ada 2005 programming language which extended the old version of the language with several new object-oriented features making it suitable for using with the MDA. Application of the MDA in real-time systems domain targeted towards Ada 2005 implementation constitutes a new design method which benefits from the MDA, UML and Ada 2005 advantages. The thesis starts with presentation of the complexity of the real-time systems domain. A few real-time domain aspects are chosen as a main area for elaborating the design method. The utilizes UML Profile for Schedulability, Performance and Time for defining platform independent model. Additionally it provides its extension – the Ada UML profile – which constitutes the platform specific model. This is followed by specification of transformations between platform independent and specific model. The specification is used as a base for implementation of the transformations. Guidelines for code generation form the Ada UML profile are also provided. Finally, the thesis describes how the transformations can be implemented in Telelogic TAU tool.<br>gruszka.robert@gmail.com
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Wang, Xin. "Automatically Measuring Neuromuscular Jitter." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/956.

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The analysis of electromyographic (EMG) signals detected during muscle contraction provides important information to aid in the diagnosis and characterization of neuromuscular disorders. One important analysis measures neuromuscular jitter, which is the variability of the time intervals between two muscle fibre potentials (MFPs) belonging to the same motor unit over a set of discharges. Conventionally, neuromuscular jitter is measured using single fibre (SF) EMG techniques, which can identify individual MFPs by using a SF needle electrode. However, SF electrodes are expensive, very sensitive to needle movement and not easy to operate in practise. <br /><br /> A method is studied in this thesis for automatically measuring neuromuscular jitter in motor unit potentials (MUP), it measures jitter using routine EMG techniques, which detect MUPs using a concentric needle (CN) electrode. The method is based on the detection of near MFP contributions, which correspond to individual muscle fibre contributions to MUPs, and the identification of individual MFP pairs. The method was evaluated using simulated EMG data. After an EMG signal is decomposed into MUP trains, a second-order differentiator, McGill filter, is applied to detect near MFP contributions to MUPs. Then, using nearest neighbour clustering and minimum spanning tree algorithms, the sets of available filtered MUPs can be selected and individual MFPs can be identified according to the features of their shapes. Finally, individual MFP pairs are selected and neuromuscular jitter is measured. <br /><br /> Using the McGill filter, near MFP contributions to detected CN MUPs can be consistently detected across an ensemble of successive firings of a motor unit. The method is an extension of the work Sheng Ma, compared to previous works, more efficient algorithms are used which have demonstrated acceptable performance, and which can consistently measure neuromuscular jitter in a variety of EMG signals.
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Books on the topic "MFA Systems"

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Holubka, S. "Ekonomichna systema" M.A. Baludi͡a︡nsʹkoho. Vyd-vo "Svit", 1998.

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Moose, Paul H. Theory of multi-frequency modulation (MFM) digital communications. Naval Postgraduate School, 1989.

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Broquard, Victor E. Programming with MFC for Windows 95. Prentice Hall PTR, 1996.

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International Conference on Mobile Data Access (1st 1999 Hong Kong, China). Mobile data access: First International Conference, MDA'99, Hong Kong, China, December 16-17, 1999 : proceedings. Springer, 1999.

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A, Sivers M., ed. Sistemy peredachi informat͡s︡ii i obrabotki signalov: [redakt͡s︡ionnai͡a︡ kollegii͡a︡ M.A. Sivers - otvetstvennyĭ redaktor ... et al.]. Ėlektrotekhn. in-t svi͡a︡zi im. M.A. Bonch-Bruevicha, 1991.

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Dri-med-ʼod-zer, Kloṅ-chen-pa. The precious treasury of philosophical systems. Padma Pub., 2007.

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Inc, AST Research, ed. SABRE MFP+/LB computer system user's manual: Energy-efficient, industry standard architecture computer. AST Computer, 1994.

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United States. Federal Highway Administration. Office of Technology Applications. Structures and Soils Applications Branch., ed. Evaluation of steel in concrete bridges: The Magnetic Field Disturbance (MFD) System. U.S. Dept. of Transportation, Federal Highway Administration, Office of Technology Applications, Engineering Applications Division, Structures and Soils Applications Branch, 1991.

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Center, Turner-Fairbank Highway Research, ed. Magnetic-based NDE of prestressed and post-tensioned concrete members: The MFL system. U.S. Dept. of Transportation, Federal Highway Administration, Research and Development, Turner-Fairbank Highway Research Center, 2000.

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Center, Turner-Fairbank Highway Research, ed. Magnetic-based NDE of prestressed and post-tensioned concrete members: The MFL system. U.S. Dept. of Transportation, Federal Highway Administration, Research and Development, Turner-Fairbank Highway Research Center, 2000.

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Book chapters on the topic "MFA Systems"

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Lu, Suihua, and Aubrey B. Poore. "Network-Centric MFA Tracking Architectures." In Cooperative Systems. Springer US, 2003. http://dx.doi.org/10.1007/978-1-4757-3758-5_10.

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Fet, Annik Magerholm, and Paritosh C. Deshpande. "Closing the Loop: Industrial Ecology, Circular Economy and Material Flow Analysis." In Business Transitions: A Path to Sustainability. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-22245-0_11.

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AbstractThis chapter explores the principles supporting industrial ecology (IE), circular economy (CE) and material flow analysis (MFA). IE concerns constructing industrial and societal processes according to ecological principles. One of the main features within IE is the principle of closing material loops by avoiding pollution. Insights from IE further aid in building the understanding essential for establishing the principles of circularity in the resource economy. MFA is viewed as an analytical method rooted in the field of IE and Systems Engineering (SE).
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Chiranjeevi, Karri, Uma Ranjan Jena, B. Murali Krishna, and Jeevan Kumar. "Modified Firefly Algorithm (MFA) Based Vector Quantization for Image Compression." In Advances in Intelligent Systems and Computing. Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2731-1_35.

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Muir, Allan, Kymani Brown, and Anteneh Girma. "Reviewing the Effectiveness of Multi-factor Authentication (MFA) Methods in Preventing Phishing Attacks." In Lecture Notes in Networks and Systems. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-73128-0_40.

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Deshpande, Paritosh C., and Arron W. Tippett. "Application of Material Flow Analysis: Mapping Plastics Within the Fishing Sector in Norway." In Business Transitions: A Path to Sustainability. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-22245-0_17.

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AbstractPlastic in our marine environment is now ubiquitous. Abandoned lost or otherwise discarded fishing gear (ALDFG) is of particular concern due to its ability to continue to function as a trap for marine organisms. In order for decision makers to act on this grave issue, we require data on the flow of ALDFG into the marine environment. One key tool for revealing the flow of material within a specific system is Material Flow Analysis (MFA). MFA takes a life cycle approach (cradle to grave) to assess energy or material flows in a system within space and time boundaries. It can be applied at multiple levels from the industrial process level to the national level. This chapter presents a case study of an MFA conducted on fishing gear in Norway. The MFA methodology was used in this case study to assess the flow of plastic fishing gear from production through to recycling, final disposal or loss to the marine environment. Data was collected for the MFA through stakeholder interviews, literature reviews and analysis of government data sets. The MFA revealed that around 4000 tons of plastic fishing gear enters the system in Norway and around 400 tons enter the marine environment each year. An analysis of the implications of the MFA for the key actors within the life cycle chain of fishing gear is presented and a short description of the links between MFA and the circular economy and sustainable development is provided. Furthermore, the relevance and implications of using MFA tool for policy making at national and regional level is discussed and elaborated while associated challenges are presented here.
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Matelski, Sławomir. "Secure Human Identification Protocol with Human-Computable Passwords." In Information Security Practice and Experience. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-21280-2_25.

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AbstractIn this paper we present a new method of secure human-computer identification, which remains safe also in untrusted systems and environments. This method allows the elimination of any supplementary gadgets/devices or theft-sensitive biometric data used by the Multi-Factor Authentication (MFA), and using only one secret as a universal private key for all obtainable online accounts. However, the features of this solution make it best suited for use by the Authentication Authority with the Single-Sign-On (SSO) method of identity and access management, rather than for individual services. Such a key is used by our innovative challenge-response protocol to generate One-Time-Password, e.g., 6-digit OTP, could be calculated by a human in only 12 s, also offline on paper documents with an acceptable level of security required for post-quantum symmetric cyphers, thanks to the hard lattice problem with noise introduced by our new method, which we call Learning with Options (LWO). The secret has the form of an outline like a kind of handwritten autograph, designed in invisible ink on the mapping grid. The password generation process requires following such an invisible contour on the challenge matrix created randomly by the verifier and reading values from secret fields to easily calculate each digit of OTP.
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van Gool, Louis, Teade Punter, Marc Hamilton, and Remco van Engelen. "Compositional MDA." In Model Driven Engineering Languages and Systems. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11880240_10.

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Mazón, Jose-Norberto, and Juan Trujillo. "Data Warehousing Meets MDA." In Annals of Information Systems. Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-87431-9_3.

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Lopata, Audrius, and Martas Ambraziunas. "Knowledge-Based MDA Approach." In Business Information Systems Workshops. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-25370-6_16.

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Igbadun, H. E., O. A. Ojeleye, Tafadzwanashe Mabhaudhi, and O. Cofie. "Sustainable Intensification of Mixed Farming System in West Africa: Concepts, Practices, and Challenges." In Enhancing Water and Food Security Through Improved Agricultural Water Productivity. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-1848-4_7.

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Abstract Sustainable intensification (SI) is a system of production that increases output without causing significant environmental damage. It focusses on enhancing agricultural land production while managing its environmental impact. Evaluation frameworks have evolved to include non-environmental aspects, such as social concerns, economics, and the human condition. Agricultural sustainability assessment now uses indicator frameworks, which are structured into five domains: productivity, economic, environment, the human condition, and social domains. Mixed farming systems (MFS) is an approach to sustainable agriculture where farmers produce crops and animals in the same location under the same ownership. MFS provides enough food for consumers and income for farmers while ensuring soil fertility, biodiversity, and pest control. Several characterizations and typologies of MFS in West Africa have been identified, but the level of development varies due to farmers’ preferences. Despite the benefits of MFS, socio-economic factors, such as skills and competencies, the role of the agricultural knowledge and innovation system, the economy, and the policy environment, pose major challenges and obstacles to its growth in West Africa.
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Conference papers on the topic "MFA Systems"

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Pandey, Pravin. "AI-Enabled Multi-Factor Authentication (MFA) Systems for Private and Public Cloud Security." In 2025 International Conference on Electronics and Renewable Systems (ICEARS). IEEE, 2025. https://doi.org/10.1109/icears64219.2025.10941462.

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Marais, Willem-Louis. "MEA Triazine Contactor Optimization to Increase Efficiency and Reduce Fouling Potential." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-20391.

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Abstract Liquid absorbents have been utilized for decades to remove impurities from produced natural gas. Throughout the last 15 years, monoethanolamine (MEA) triazine has become an industry-recognized name for the removal of sour gas (H2S). MEA triazine has one of the lowest cost profiles in terms of cost per mass of H2S removed and has obtained a commodity status. It is widely used in the oil and gas industry, both on production (upstream, midstream) and processing (downstream). MEA Triazine is typically applied via direct injection into flowlines or applied in contactor vessels (“scrubbers”, “towers”, “bubble columns”). The application type depends on numerous factors but in general, the application via contactor vessel is preferred due to its increased efficiency. However, due to the many different contactor configurations available, a wide range of efficiencies are achieved, ranging from 50 – 70%. MEA Triazine systems are also known to foul with acid-insoluble polymeric solids. This occurs when the MEA Triazine and its reaction products are not managed properly, or the system is not designed for the specific conditions. The spent material, commonly referred to as dithiazine, can form solids (amorphous dithiazine) in the contactor packing, post contactor separator, or in downstream pipelines if carry-over occurs. This paper aims to provide the reader guidance on how to optimize MEA Triazine contactor vessels to achieve maximum efficiency and to reduce or eliminate fouling. Optimization principles discussed will include contactor configurations, contactor modifications, and MEA Triazine properties and its effect on system performance. Increasing system efficiency and eliminating solids formation in these systems will have a direct impact on the user’s operating expense (OPEX). This is due to better scavenger utilization and a reduction in maintenance and downtime due to solids formation. A reduction in scope three emissions will also be achieved.
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Porter, Patrick C. "The Application of New Technology to the Inspection of Transmission and Distribution Pipelines." In CORROSION 1996. NACE International, 1996. https://doi.org/10.5006/c1996-96043.

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Abstract The Magnetic Flux Leakage (MFL) technique has been used to inspect operating pipelines and above ground storage tanks for many years. This technique involves magnetically saturating the material under inspection and scanning the surface of the material for MFL fields caused by wall thinning defects. Recently, this technology has been adapted for the inspection of in-service distribution pipelines. This new inspection system couples the MFL techniques used for pipeline inspection to a novel delivery system for the specific task of gathering real time data on the condition and integrity of distribution pipelines. The focus of this paper is to review this application of the Magnetic Flux Leakage technique to describe the novel delivery systems developed and to detail the enabling technologies that now allow real time capture and analysis of inspection data.
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Romney, Matthew, and Sean Moran. "Validating EMAT Performance with an Operator." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16727.

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Abstract The primary focus of a pressurized piping systems integrity management program (IMP) is to provide safe, reliable operation. One of the preferred tools leveraged by operators is the use of in-line inspection (ILI) technologies to assess the integrity of their assets. A comprehensive inspection program using ILI systems to detect, quantify and accurately classify anomalies is a mitigation strategy for pipeline threats thus reducing risk to the environment. Magnetic flux leakage (MFL) is the most commonly used ILI technology for pipeline metal loss assessment. However, despite segments having been inspected multiple times with MFL systems, in-service incidents still continue to occur. Some in-service failures have been associated with stress corrosion cracking (SCC) or other cracking related threats. Due to the size and geometry of tight cracks and the limitations of MFL based technologies, they can go undetected. Electromagnetic acoustic transducer (EMAT) technology generates an acoustic wave in the pipe material. The wave propagates around the pipe and is reflected back to receiver sensors when the acoustic wave encounters a crack. While EMAT development for ILI systems began in the 1980s, significant advancements in performance over the last decade have resulted in greater adoption and has recently been included in some regulation. This paper will outline TDW’s experience validating EMAT performance with Williams, a gas pipeline operator. A review of the added benefit EMAT technology provides to augment more traditional ILI technologies, such as MFL and geometry, will be explained. An outline of the combined effect of multiple technologies to produce the most comprehensive ILI system solution for accurately detecting and characterizing crack anomalies that may otherwise go undetected will be presented.
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Hosoya, Keizo, Katsumi Yamamoto, and Keikichi Maeda. "Effects of H2S and CO2 on Igscc of Carbon Steel in MEA Solution." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91320.

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Abstract The effects of H2S and CO2 on the intergranular stress corrosion cracking (IGSCC) of carbon steels in MEA solutions were studied by Slow Strain Rate Testing (SSRT) technique. IGSCC did not occur in either MEA solution or MEA-H2S solution, but there was an IGSCC occurring potential region which located in a little more noble than the corrosion potential region in MEA-CO2 solution. On the other hand, in MEA-CO2-H2S solution, IGSCC occurred at the same potential region as in MEA-CO2 solution, but it did not occur when the H2S concentration exceeded 0.01 mol/mol-MEA. This is considered that IGSCC is suppressed by the formation of firm sulfide corrosion products, as the H2S concentration increases. In addition, the presence of H2S in MEA-CO2 solution produces the driving force to shift the corrosion potential of carbon steels to the noble side. Therefore, it is considered that IGSCC will occur in a corrosion potential state of a MEA-CO2-H2S system when a small quantity of H2S exists in MEA-CO2 solution, because the corrosion potential is shifted to the IGSCC potential region.
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Semerad, V. A. W., F. A. Corsiglia, D. Weaver, and G. Cox. "Testing of Epoxy Adhesives for a Splash-Zone Coating Retrofit System for Marine Pipeline Riser Applications." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03042.

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Abstract In the 1992/96 Joint Industry Project test program an epoxy adhesive was qualified, which was applicable and curable under water. However, it used a curative, which contained a man-made chemical called MDA (4,4' methylenedianiline). The MDA-containing curative was shown to be carcinogenic and was later withdrawn from the market. After removal of the MDA and reformulation, application and performance properties of epoxies for underwater application and curing were significantly affected. Since the reformulated epoxy adhesives did not meet the properties of the original (MDA-containing) adhesive, the application process for the riser coating retrofit system was significantly affected. An extensive research and testing program was conducted recently to find a suitable and effective replacement. This paper describes and discusses the testing methodology, which was used during the recent evaluation of replacement candidate epoxies.
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Tu, Seng Da, Yung Lin Hsu, and Kuan Heng Shen. "5G MFH And PON Shared Fiber Optic System." In 2024 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS). IEEE, 2024. https://doi.org/10.1109/ispacs62486.2024.10868390.

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J, Ganesan, Prathipa S, and Anantha Kirishnan S. "Biometric MFA in Smart Automobiles." In 2023 Intelligent Computing and Control for Engineering and Business Systems (ICCEBS). IEEE, 2023. http://dx.doi.org/10.1109/iccebs58601.2023.10448689.

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Liu, Jing, Meng-yan Li, and Yi Liu. "DCT MFA subspace hyperspectral remote sensing images terrain classification." In 2017 13th International Conference on Natural Computation, Fuzzy Systems and Knowledge Discovery (ICNC-FSKD). IEEE, 2017. http://dx.doi.org/10.1109/fskd.2017.8393007.

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Jin, Weizhao, Xiaoyu Ji, Ruiwen He, Zhou Zhuang, Wenyuan Xu, and Yuan Tian. "SMS Goes Nuclear: Fortifying SMS-Based MFA in Online Account Ecosystem." In 2021 51st Annual IEEE/IFIP International Conference on Dependable Systems and Networks Workshops (DSN-W). IEEE, 2021. http://dx.doi.org/10.1109/dsn-w52860.2021.00013.

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Reports on the topic "MFA Systems"

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Lausche, Barbara, Aaron Laur, and Mary Collins. Marine Connectivity Conservation Rules of Thumb for MPA and MPA Network Design. IUCN WCPA Connectivity Conservation Specialist Group’s Marine Connectivity Working Group, 2021. http://dx.doi.org/10.53847/jxqa6585.

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Marine Protected Areas (MPAs) are widely used as place-based protective measures for restoring and safeguarding marine biodiversity. When ecological connectivity is taken into account during design and management, the results can lead to more effective and resilient MPAs and MPA networks. This publication provides 13 ‘Rules of Thumb’ to support more consistent efforts by MPA managers and marine conservation professionals to implement connectivity conservation and better measure progress towards global conservation targets. These purpose-built tools are intended to inform more effective management and protection of oceans and coasts by covering a diversity of science and policy issues. They can also be used to progress system-based marine conservation as an essential component of national, transboundary, and global policies that establish greater connectivity across borders and at larger scales.
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Aydogdu, Ali. Design of the glider assimilation experiments. EuroSea, 2023. http://dx.doi.org/10.3289/eurosea_d4.2_v2.

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Aydogdu, Ali, Jaime Hernandez-Lasheras, Carolina Amadio, Baptiste Mourre, Gianpiero Cossarini, and Jenny Pistola. Design of the glider assimilation experiments. EuroSea, 2021. http://dx.doi.org/10.3289/eurosea_d4.2.

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Agardy, Tundi, Daniel Brumbaugh, Eugenia Naro-Maciel, and Francis Staub. Marine Protected Areas and MPA Networks. American Museum of Natural History, 2006. http://dx.doi.org/10.5531/cbc.ncep.0155.

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Marine protected areas (MPAs) are coastal or offshore marine areas managed to protect the natural and/or cultural resources of a particular place. MPA networks, a more recent development, are systems of MPAs designed to increase protection to a geographic area. There can me numerous goals of MPAs though they are mainly related to conservation (e.g., biodiversity conservation, protection of a rare species), or sustainability (e.g., fisheries management, recreation). This module introduces MPAs including the costs and benefits, relations to biodiversity and fisheries management, design and implementation, with a look towards how MPAs can be more effective in the future. Through role-playing, the accompanying exercise allows students to experience the challenges of developing a plan for an MPA that satisfies different users while meeting common objectives.
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Grauer and Chapman. L52330 Development of an Active Air Control System. Pipeline Research Council International, Inc. (PRCI), 2012. http://dx.doi.org/10.55274/r0010447.

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Develop an active air control system that, when installed on a turbocharged-engine system, will reduce NOX emissions below the levels of the system alone. While the turbocharged-engine system allows the natural gas compression industry to decrease pollutant emissions via increased air flow, the physics of the system and the environments in which these systems operate restrict further advancements. A new model, the Charge Air Integrated Manifold Engine Numerical Simulation (CAIMENS). The CAIMENS model was used to: Quantify the effects of charge air imbalance between cylinders in terms of NOX production; Illustrate that an imbalance in mass air flow creates a one-to-one imbalance in corrected trapped equivalence ratio Reveal a 5% to 12% imbalance in air flow present in the candidate Cooper GMV engine which correlated to a 65% to 92% imbalance in NOX production; and Provide detailed information that led to the specification of a mass air flow (MAF) sensor coupled with an air flow balancer (AFB), comprising the Active Air Control (AAC) system. The research team proceeded by working with the ERLE team to select cylinder liners for the NGML air flow bench, and then expanded the air flow bench from one cylinder to two cylinders. The specified AAC system was installed on each of the two cylinders. The research team then conducted a series of experiments to evaluate and fine tune the AAC system. The AAC system was able to correct up to a 12.4% air imbalance. The end point of the project was an AAC system that could, with some engineering effort, be applied to field engines. Benefit: The resulting technology was an active air flow control system consisting of an AFB integrated with a MAF sensor. The AFB has characteristics analogous to that of a throttle plate used in a carbureted internal combustion engine.
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6

Atkin, Benjamin, and Kenneth P. Birman. MFS: an Adaptive Distributed File System for Mobile Hosts. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada529351.

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7

Haakinson, Eldon, Brent Bedford, and Susan Rothschild. MF Broadcasting System Performance Model. Institute for Telecommunication Sciences, 1988. https://doi.org/10.70220/3c1p5lxl.

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8

Deng, Lingyan, Katherine Hedrick, Joshua Morgan, et al. Quantifying Uncertainty in High CO₂ Capture rate with MEA Solvent Systems. Office of Scientific and Technical Information (OSTI), 2025. https://doi.org/10.2172/2567978.

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9

Allegretto, Sylvia A., and Dave Graham-Squire. Monopsony in Professional Labor Markets: Hospital System Concentration and Nurse Wages. Institute for New Economic Thinking Working Paper Series, 2023. http://dx.doi.org/10.36687/inetwp197.

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Rolling waves of consolidation have significantly decreased the number of hospital systems in the U.S. potentially affecting industry quality, prices, efficiency, wages and more. This research concerns the growth in hospital system consolidation in local labor markets and its effect on registered nurse wages. We first use a nonparametric preprocessing data step via matching methods to define MSA-specific samples of workers analogous to nurses outside of the hospital sector. This step enables an accounting of heterogeneous MSA-specific baseline wage growth, and yields a standardized measure of nurse wage growth across MSAs used to set up a multi-site quasi-experiment. We then run a parsimonious linear model; market size matters, for every 0.1 increase in consolidation in smaller-MSAs, real hourly nurse wage growth decreased by $0.70 (p-value of 0.038). Though not the primary aim of this study, a secondary finding is that real hourly wages for nurses grew less than that of comparable workers by $4.08.
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10

DeMinco, Nicholas. Ground-wave Analysis Model for MF Broadcast Systems. Institute for Telecommunication Sciences, 1986. https://doi.org/10.70220/qwzxk212.

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