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Operational Solution to the Nonlinear Klein-Gordon Equation

Communications in Theoretical Physics 2018年第5期69卷 506-512页

作者： G.Bengochea L.Verde-Star M.Ortigueira Departamento de Matematicas Universidad Autonoma MetropolitanaIztapalapaApartado 55-534Ciudad de MexicoMexico cts-uninova/Department of Electrical Engineering Faculdade de Ciencias e Tecnologia da Universidade Nova de LisboaCampus da FCT da UNLQuinta da Torre 2825-149 Monte da CaparicaPortugal

We obtain solutions of the nonlinear Klein-Gordon equation using a novel operational method combined with the Adomian polynomial expansion of nonlinear functions. Our operational method does not use any integral transforms nor integration processes. We illustrate the application of our method by solving several examples and present numerical results that show the accuracy of the truncated series approximations to the solutions.

关键词： operational calculus partial differential equations nonlinear Klein-Gordon equation

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IoT Testbed Business Model

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Advances in Internet of Things 2014年第4期4卷 37-45页

作者： Edgar M. Silva Pedro Maló Faculdade de Ciências e Tecnologia (FCT) Universidade Nova de Lisboa (UNL) Caparica Portugal uninova Centro de Tecnologia e Sistemas (CTS) Caparica Portugal

The Internet-of-Things (IoT) is today one of the hypes in the technological world but despite the enormous attention and research investment, the clear business value is still hard to perceive. IoT deployments are costly to be installed, managed and maintained, and need to provide a very clear value to justify the investments. For another viewpoint, IoT technologies need to be proven before deployment, which implies the need to test and assess IoT solutions in real settings and involve the actual target users. And as such, this presents an opportunity to have IoT deployments with a clear business model mainly focused on real-life large-scale research and technological experimentation. This would mean having a sustainable IoT infrastructure in-place based on the provision of experimentation services and a trial environment to industry and research, which then could also present an opportunity to establish added-value (business) services. This is the exact idea of the flagship SmartSantander testbed facility and especially its major deployment in the city of Santander, Spain. The SmartSantander facility business model is built around experimentally-driven research and technology development thus attracting many experimenters from industry and European research projects. This model makes it possible to sustain an outstanding large-scale IoT deployment of around 12,000 sensors and on top of it the development of new the development of new services and applications especially targeting the needs of users (citizens, businesses, authorities) in smart-cities. This paper studies the business model of outstanding SmartSantander facility in order to provide a generic Business Model for IoT testbeds that can provide guidance and be adapted by owners (or owners to-be) wishing to exploit their IoT deployments as facilities supporting experimentation and trials of IoT solutions.

关键词： Internet-of-Things Testbed Business Model SmartSantander

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Measuring project performance by applying social network analyses

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International Journal of Innovation Studies 2021年第2期5卷 35-55页

作者： Marco Nunes António Abreu Jelena Bagnjuk Jörn Tiedtke Industrial Engineering Department of University of Beira Interior 6201-001CovilhaPortugal Mechanical Engineering Department of Polytechnic Institute of Lisbon 1959-007LisbonPortugal cts uninova 2829-516CaparicaPortugal Project Management Department UKE(University Medical Center Hamburg-Eppendorf)Martinistraße 5220251HamburgGermany Project Management Department Hays&Tetra Pak Brandstwiete 120457HamburgGermany

It is often argued that the core of organizational success is efficient *** authors even posit that efficient collaboration is more important to organizational innovation and performance than individual skills or ***,the lack of efficient models to manage collaboration properly is a major constraint for organizations to profit from internal and external collaborative ***,much of the collaboration in organizations occurs through virtual network channels,such as e-mail,Yammer,Jabber,Microsoft Teams,Skype,and *** are even more important in situations where different time zones and even threats of a pandemic constrain face-to-face human *** work introduces a multidisciplinary heuristic model developed based on project risk management and social network analysis centrality metrics graph-theory to quantitatively measure dynamic organizational collaboration in the project environment.A case study illustrates the proposed model’s implementation and application in a real virtual project organizational *** major benefit of applying this proposed model is that it enables organizations to quantitatively measure different collaborative,organizational,and dynamic behavioral patterns,which can later correlate with organizational *** model analyzes three collaborative project dimensions:network collaboration cohesion evolution,network collaboration degree evolution,and network team set variability *** provides organizations an innovative approach to understand and manage possible collaborative project risks that may emerge as projects are *** can use the proposed model to identify projects’critical success factors by comparing successful and unsuccessful delivered projects’dynamic behaviors if a substantial number of both project types are *** proposed model also enables organizations to make decisions with more information regarding the support for changes i

关键词： Project risk management Social network analysis Project performance Project outcome Project critical success factor Sustainability Innovation

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