Filipe Ferreira - Academia.edu (original) (raw)

Papers by Filipe Ferreira

Forte de son concept visant à réunir lesscientifiques et professionnels reconnusde l’archéologie,... more Forte de son concept visant à réunir lesscientifiques et professionnels reconnusde l’archéologie, et les citoyens amateurspassionnés de patrimoine, cette journée estun lieu privilégié d’échanges autour d’unediscipline toujours fascinante, portant un grandcoup de projecteur sur les différents chantiersmenés en région.Cette brochure vous permettra de redécouvrirl’ensemble des interventions de la journée du29 mai 2015, visant à présenter les résultats desprospections et fouilles conduites à Autun eten Bourgogne en 2014

2021 IEEE International IOT, Electronics and Mechatronics Conference (IEMTRONICS)

There are various causes related to the appearance of wounds in people that are cause several hea... more There are various causes related to the appearance of wounds in people that are cause several health problems. Earlier detection and easy monitoring is essential for the correct treatment of this problem. The pandemic time that we live in is causing the people not to go to the hospital to treat the various wounds. This paper performs the revision of the methods for measuring the wound size, but the wounds' color can detect other parameters. This study also proposed a technique for further implementing the detection of wounds with the camera available in off-the-shelf mobile devices. As future work, the method will be implemented to correct wound size in an Android application.

Apport de l'approche combinée de données spatialisées à la restitution du théâtre antique du Haut... more Apport de l'approche combinée de données spatialisées à la restitution du théâtre antique du Haut du Verger

2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2017

While further increasing the capacity of the SSMF is bounded by the nonlinear Shannon Limit, the ... more While further increasing the capacity of the SSMF is bounded by the nonlinear Shannon Limit, the annual traffic growth already exceeds the growth of the transmission capacity. In the nearest years, new traffic demands can only be accommodated by lighting a new fiber leading to a linear increase of the cost per bit. The development of communication systems based on multi-mode fibers is considered as a promising way for solving the above problem. However, there are new impairments that we have to be addressed: linear mode coupling, differential mode delay (DMD), and inter-mode nonlinear effects [1].

45th European Conference on Optical Communication (ECOC 2019), 2019

We review digital methods to mitigate the Kerr nonlinearity in multi-mode and/or multi-core fibre... more We review digital methods to mitigate the Kerr nonlinearity in multi-mode and/or multi-core fibres operating in different operational regimes as determined by differential mode delay and linear mode coupling. The results demonstrate that transmission performance can be more than doubled for feasible fibres characteristics.

Smart Specialization Strategies and the Role of Entrepreneurial Universities, 2019

Place-based policies are considered the new regional policy paradigm, replacing an existing conce... more Place-based policies are considered the new regional policy paradigm, replacing an existing concept of regional development pillars and redistributive logics. At EU policy-making level, the territorial dimension of the programming cycle for 2014-20 requires place-based policies to the formulation and implementation of a new set of instruments as the smart specialization strategies (RIS3). Based on dynamic competitive advantages anchored on territorial idiosyncrasies, RIS3 are as well an ex-ante condition of access to the structural funds at both a national and regional level. RIS3 are thus seen by us as a benchmark instrument for the place-based theory. An analysis of the scientific literature and official documents of the EU and its member states supported a correlation matrix that cross-referenced the characteristics of the RIS3 with those of the regional policy paradigms. Results reveal that RIS3 are hybrid policy instruments partly place-based but still with characteristics that...

Journal of Composites Science, 2021

The use of 3D printing has proven to have significant benefits to manufacture components with com... more The use of 3D printing has proven to have significant benefits to manufacture components with complex geometries with several types of materials and reinforcements for a wide variety of uses including structural applications. The focus of this study is to develop and implement a thermoplastic pultrusion process that can obtain a carbon fiber/polypropylene (CF/PP) filament for a 3D printing process. This development process included the design and finite element analysis of the die used to conform the filament, considering the adaptation of a filament-winding setup to achieve adequate production conditions. The finite element model tried to achieve homogeneous heating of the die with the use of a series of resistors controlled by PID controllers monitoring several thermocouples strategically positioned while the use of water circulating channels was responsible for the cooling effect. The die-heating environment is optimized for different scenarios with different initial temperatures...

A comunicação propõe-se apresentar o processo de intervenção num imóvel do século XIX na cidade d... more A comunicação propõe-se apresentar o processo de intervenção num imóvel do século XIX na cidade do Porto. O edifício apresentava problemas estruturais e diversas anomalias resultantes de falta de manutenção durante mais de cinquenta anos. A proposta dirigiu-se, numa 1ª Fase, à reabilitação de coberturas, com o objectivo de recuperar a sua estanquidade e, simultaneamente, preservar todos os elementos que se encontrassem em bom estado de conservação, de forma a salvaguardar a integridade e a autenticidade construtiva do edifício. Considerando a importância de um rigoroso conhecimento, análise e diagnóstico da préexistência, foi solicitado um relatório de inspecção estrutural que contribuiu para a fundamentação das opções de intervenção. O projecto previu o desenvolvimento de soluções tradicionais ou compatíveis, contemplando intervenções pontuais de reforço estrutural, assim como a beneficiação da cobertura, designadamente da sua estanquidade, da drenagem das águas pluviais e dos sistemas de ventilação passiva. Quando as alterações se revelaram indispensáveis na resposta às exigências actuais e na maior durabilidade de intervenção, os novos elementos procuram estabelecer uma relação de diálogo e de continuidade com a preexistência, sem contudo renunciar à sua contemporaneidade. A apresentação pretende relatar e ilustrar o processo de intervenção, em equipe interdisciplinar, seguindo uma metodologia indicativa: (1) levantamentos (histórico, geométrico, construtivo); diagnóstico (inspecção, ensaios não destrutivos e mapeamento de anomalias); (2) projecto e intervenção, salvaguardando princípios de autenticidade, integridade e compatibilidade, assim como um cuidado acompanhamento da obra; (3) programação da monitorização e manutenção a médio-longo prazo.

Engineering and science projects are increasingly data driven, meaning data sets need to be creat... more Engineering and science projects are increasingly data driven, meaning data sets need to be created, stored, disseminated and reused for future use. This raises Data Management concerns and challenges. To address these concerns, Data Management Plans (DMP) are created. However, we claim Data Management Plans don’t cover all important concerns. To address this issue, we claim actual principles for Data Management Plans can be improved, using Risk Management guidelines and techniques taken from ISO 31000 and ISO 31010. Therefore, we propose a method suited for engineering and science projects that enables the creation of a Risk Management Plan (RMP), which intends to support all the decisions described in the DMP. The motivation requirements and evaluation of our work are represented by the MetaGen-FRAME project, and a case of a Civil Engineering Laboratory. As a result, our method proposal constitutes an approach to Data Governance for engineering and science projects.

Optical Communication Systems, 2019

Spatial-division multiplexing has been proposed as a next-generation solution to overcome the imm... more Spatial-division multiplexing has been proposed as a next-generation solution to overcome the imminent exhaustion of the capacity of current single-mode fiber based systems. However, these systems presented additional challenges such as the overall group-delay spread due to differential spatial-path delay and linear spatial-path coupling, and intermode nonlinear effects. The accurate modelling of these effects is preponderant on the performance optimization of mode-division multiplexing systems. This chapter reviews a method for the semianalytical modelling of linear mode coupling. Simulations using this model matched the analytical predictions for the statistics of groupdelays in few-mode fiber links, considering different coupling regimes with and without mode delay management. Furthermore, this chapter reviews the study of nonlinear performance of few-mode fiber links operating in all different linear coupling regimes and mode delay maps. The optimum link configurations minimizing the nonlinear penalty at practical levels of equalization complexity are presented. Finally, the limits of the extension of the Manakov approximation to the multi-mode case are accurately validated against a fully stochastic model developed considering distribution linear mode coupling. 10  Spatial multiplexing: modelling

Vue aérienne des fouilles de la terrasse PC 15. Cliché M. Thivet Vue générale au 1 er plan du son... more Vue aérienne des fouilles de la terrasse PC 15. Cliché M. Thivet Vue générale au 1 er plan du sondage réalisé dans le fossé défensif ceinturant le complexe monastique à la fin du IX e s. Au second plan on aperçoit, en cours de fouilles, les infrastructures maçonnées des XVIII e et XIX e s. construites dans le comblement du fossé. Cliché Y. Labaune en direction du sud-est. 4 e de couverture : Statue de divinité domestique retrouvée dans une cave de la fouille du 14, route d'Etais. Cliché C. Capdeville (Inrap) Un des visages composant le décor en stuc. Cliché J. Boislève (Inrap) UMR Archéologie Terre Histoire Sociétés En partenariat avec Avec le soutien de

This paper focuses on process visualization that is applicable to managing a Virtual Factory (VF)... more This paper focuses on process visualization that is applicable to managing a Virtual Factory (VF) business environment. It briefly provides all aspects of implementing the dashboard user interface that is to be used by the VF partners. The dashboard features state-of-the art business intelligence and provides data visualization, user interfaces and menus to support VF partners to execute collaborative processes. With advanced visualizations that produce quality graphics it offers a variety of information visualizations that brings the process data to life with clarity. This data visualization provides critical operational matrices (e.g. KPIs) required to manage virtual factories. Various technical aspects of this dashboard user interface portal are elaborated within the scope of this research such as installation instructions, technical requirements for the users and developers, execution and usage aspects, limitations and future works. The dashboard user interface portal presents d...

Cette brochure vous permettra de redecouvrir l’ensemble des interventions visant a presenter les ... more Cette brochure vous permettra de redecouvrir l’ensemble des interventions visant a presenter les resultats des prospections, fouilles preventives et programmees a Autun mais egalement dans de nombreux chantiers realises en Bourgogne.

In view of data scarcity to guide decision-making in breastfeeding women, we evaluated how mRNA v... more In view of data scarcity to guide decision-making in breastfeeding women, we evaluated how mRNA vaccines impact immune response of lactating health care workers (HCW) and the effector profile of breast milk transferred immune protection. We show that upon BNT162b2 vaccination, immune transfer via milk to suckling infants occurs through secretory IgA (SIgA) and T cells. Functionally, spike-SIgA was non-neutralizing and its titers were unaffected by vaccine boosting, indicating that spike-SIgA is produced in a T-cell independent manner by mammary gland. Even though their milk was devoid of neutralizing antibodies, we found that lactating women had higher frequencies of RBD-reactive circulating memory B cells and more RBD-IgG antibodies, when compared to controls. Nonetheless, blood neutralization titers in lactating and non-lactating HCW were similar. Further studies are required to determine transferred antibodies and spike-T cells complete functional profile and whether they can med...

Journal of Lightwave Technology, 2021

In this paper, we investigate two categories of linear frequency-modulated chirp signals suitable... more In this paper, we investigate two categories of linear frequency-modulated chirp signals suitable for single-photodiode based coherent light detection and ranging (LiDAR) systems, namely, the frequency-modulated continuous-wave (FMCW) single-sideband (SSB) signal and the amplitude-modulated doublesideband (DSB) signal, and compare their achievable receiver sensitivity performance. The DSB signal requires a simpler transmitter design, as it is real-valued and can be generated using a single-drive Mach-Zehnder modulator (MZM), while the SSB signal, which is frequency/phase modulated, requires an in-phase and quadrature modulator (IQM)-based transmitter. A theoretical analysis of direct-detection (DD) beating interference (BI) especially the local oscillator (LO) beating with itself, known as LO-LO BI, is presented. Both Monte Carlo simulations and experimental demonstrations are carried out. Good agreement between simulations and experiments is achieved. In comparison with the SSB system, the DSB signal-based system is affected by laser phase noise-induced power fluctuation, and also suffers a significant sensitivity penalty due to nonlinear LO-LO BI. A spectral guard band for mitigating LO-LO BI is necessary for the DSB signal, achieved at the expense of requiring a larger electrical bandwidth. In system tests with a delay line of 385 m, the SSB signal outperforms the DSB signal with a 10 dB better receiver sensitivity in the case with a guard band, and 25 dB better sensitivity without a guard band. Index Terms-Coherent detection, frequency-modulated continuous-wave, light detection and ranging. I. INTRODUCTION L IGHT detection and ranging (LiDAR) systems have been widely studied for numerous applications such as autonomous vehicles, 3D imaging and anemometry [1]-[6].

2020 IEEE Photonics Society Summer Topicals Meeting Series (SUM), 2020

We review recent studies of the nonlinear interference in spatial division multiplexing systems. ... more We review recent studies of the nonlinear interference in spatial division multiplexing systems. Different solution methods of the multimode Schrödinger equation are compared, highlighting the accuracy of a stochastic solution method including distributed mode coupling.

Journal of Lightwave Technology, 2021

An advanced digital backward-propagation (DBP) method using a separate-channels approach (SCA) is... more An advanced digital backward-propagation (DBP) method using a separate-channels approach (SCA) is investigated for the compensation of inter-channel nonlinearities in spatialand wavelength-multiplexed systems. Compared to the conventional DBP, intra-and inter-mode cross-phase modulation can be efficiently compensated by including the effect of the interchannel walk-off in the nonlinear step of the split-step Fourier method. We found that the SCA-DBP relaxes the step size requirements by a factor of 10, while improving performance by 0.8 dB for large walk-off and strong linear coupling. For the first time, it is shown that in spatial multiplexed systems transmission performance can be improved by sub-band processing of back propagated channels.

Journal of Lightwave Technology, 2021

We investigate polarization insensitive fiber optical parametric amplifiers (FOPAs) employing a b... more We investigate polarization insensitive fiber optical parametric amplifiers (FOPAs) employing a balanced polarization diversity loop with at least two unidirectional gain fibers. We describe and compare three variants of looped polarization insensitive FOPAs optimized for noise figure, mitigation of nonlinear impairments and their trade-off, respectively. The test scenario consists of amplifying, by up to 14 dB, a set of 21 × 50 GHz-spaced channels including a 35 GBaud PDM-QPSK signal, and evaluating a power of nonlinear crosstalk, noise figure and amplified signal BER for each variant. For the first time we demonstrate a polarization insensitive FOPA amplifying WDM signals with a noise figure as low as 5.8 dB, and a polarization insensitive FOPA with output WDM signal power of 23 dBm. The testing results let us identify likely application scenarios for each looped FOPA variant. We justify potential implementation of polarization-insensitive FOPAs in future optical communication systems by arguing its ability to deliver low noise figure <6 dB for output signal power as high as 29 dBm and to enable polarization insensitive gain for the most prominent single-polarization FOPA achievements realizing ultrawide high gain.

Computers, 2021

In recent years, research in tracking and assessing wound severity using computerized image proce... more In recent years, research in tracking and assessing wound severity using computerized image processing has increased. With the emergence of mobile devices, powerful functionalities and processing capabilities have provided multiple non-invasive wound evaluation opportunities in both clinical and non-clinical settings. With current imaging technologies, objective and reliable techniques provide qualitative information that can be further processed to provide quantitative information on the size, structure, and color characteristics of wounds. These efficient image analysis algorithms help determine the injury features and the progress of healing in a short time. This paper presents a systematic investigation of articles that specifically address the measurement of wounds’ sizes with image processing techniques, promoting the connection between computer science and health. Of the 208 studies identified by searching electronic databases, 20 were included in the review. From the perspec...

Journal of Lightwave Technology, 2020

Nonlinear performance in spatial multiplexing systems is strongly determined by the interplay bet... more Nonlinear performance in spatial multiplexing systems is strongly determined by the interplay between differential mode delay, linear mode coupling and Kerr nonlinearity. In this work we review and extend the analysis of different solution methods for the linear coupling operator in the coupled nonlinear Schrödinger equation for spatial multiplexed propagation. Numerical solution methods are compared for different operational regimes as determined by differential mode delay and linear mode coupling. Finally, we review and extend the study of digital methods to mitigate the Kerr nonlinearity for arbitrary levels of random linear mode coupling. For the first time, it is shown that in spatial multiplexing systems transmission performance can be improved by reducing the number of back propagated channels for non-negligible levels of differential mode delay.

Forte de son concept visant à réunir lesscientifiques et professionnels reconnusde l’archéologie,... more Forte de son concept visant à réunir lesscientifiques et professionnels reconnusde l’archéologie, et les citoyens amateurspassionnés de patrimoine, cette journée estun lieu privilégié d’échanges autour d’unediscipline toujours fascinante, portant un grandcoup de projecteur sur les différents chantiersmenés en région.Cette brochure vous permettra de redécouvrirl’ensemble des interventions de la journée du29 mai 2015, visant à présenter les résultats desprospections et fouilles conduites à Autun eten Bourgogne en 2014

2021 IEEE International IOT, Electronics and Mechatronics Conference (IEMTRONICS)

There are various causes related to the appearance of wounds in people that are cause several hea... more There are various causes related to the appearance of wounds in people that are cause several health problems. Earlier detection and easy monitoring is essential for the correct treatment of this problem. The pandemic time that we live in is causing the people not to go to the hospital to treat the various wounds. This paper performs the revision of the methods for measuring the wound size, but the wounds' color can detect other parameters. This study also proposed a technique for further implementing the detection of wounds with the camera available in off-the-shelf mobile devices. As future work, the method will be implemented to correct wound size in an Android application.

Apport de l'approche combinée de données spatialisées à la restitution du théâtre antique du Haut... more Apport de l'approche combinée de données spatialisées à la restitution du théâtre antique du Haut du Verger

2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2017

While further increasing the capacity of the SSMF is bounded by the nonlinear Shannon Limit, the ... more While further increasing the capacity of the SSMF is bounded by the nonlinear Shannon Limit, the annual traffic growth already exceeds the growth of the transmission capacity. In the nearest years, new traffic demands can only be accommodated by lighting a new fiber leading to a linear increase of the cost per bit. The development of communication systems based on multi-mode fibers is considered as a promising way for solving the above problem. However, there are new impairments that we have to be addressed: linear mode coupling, differential mode delay (DMD), and inter-mode nonlinear effects [1].

45th European Conference on Optical Communication (ECOC 2019), 2019

We review digital methods to mitigate the Kerr nonlinearity in multi-mode and/or multi-core fibre... more We review digital methods to mitigate the Kerr nonlinearity in multi-mode and/or multi-core fibres operating in different operational regimes as determined by differential mode delay and linear mode coupling. The results demonstrate that transmission performance can be more than doubled for feasible fibres characteristics.

Smart Specialization Strategies and the Role of Entrepreneurial Universities, 2019

Place-based policies are considered the new regional policy paradigm, replacing an existing conce... more Place-based policies are considered the new regional policy paradigm, replacing an existing concept of regional development pillars and redistributive logics. At EU policy-making level, the territorial dimension of the programming cycle for 2014-20 requires place-based policies to the formulation and implementation of a new set of instruments as the smart specialization strategies (RIS3). Based on dynamic competitive advantages anchored on territorial idiosyncrasies, RIS3 are as well an ex-ante condition of access to the structural funds at both a national and regional level. RIS3 are thus seen by us as a benchmark instrument for the place-based theory. An analysis of the scientific literature and official documents of the EU and its member states supported a correlation matrix that cross-referenced the characteristics of the RIS3 with those of the regional policy paradigms. Results reveal that RIS3 are hybrid policy instruments partly place-based but still with characteristics that...

Journal of Composites Science, 2021

The use of 3D printing has proven to have significant benefits to manufacture components with com... more The use of 3D printing has proven to have significant benefits to manufacture components with complex geometries with several types of materials and reinforcements for a wide variety of uses including structural applications. The focus of this study is to develop and implement a thermoplastic pultrusion process that can obtain a carbon fiber/polypropylene (CF/PP) filament for a 3D printing process. This development process included the design and finite element analysis of the die used to conform the filament, considering the adaptation of a filament-winding setup to achieve adequate production conditions. The finite element model tried to achieve homogeneous heating of the die with the use of a series of resistors controlled by PID controllers monitoring several thermocouples strategically positioned while the use of water circulating channels was responsible for the cooling effect. The die-heating environment is optimized for different scenarios with different initial temperatures...

A comunicação propõe-se apresentar o processo de intervenção num imóvel do século XIX na cidade d... more A comunicação propõe-se apresentar o processo de intervenção num imóvel do século XIX na cidade do Porto. O edifício apresentava problemas estruturais e diversas anomalias resultantes de falta de manutenção durante mais de cinquenta anos. A proposta dirigiu-se, numa 1ª Fase, à reabilitação de coberturas, com o objectivo de recuperar a sua estanquidade e, simultaneamente, preservar todos os elementos que se encontrassem em bom estado de conservação, de forma a salvaguardar a integridade e a autenticidade construtiva do edifício. Considerando a importância de um rigoroso conhecimento, análise e diagnóstico da préexistência, foi solicitado um relatório de inspecção estrutural que contribuiu para a fundamentação das opções de intervenção. O projecto previu o desenvolvimento de soluções tradicionais ou compatíveis, contemplando intervenções pontuais de reforço estrutural, assim como a beneficiação da cobertura, designadamente da sua estanquidade, da drenagem das águas pluviais e dos sistemas de ventilação passiva. Quando as alterações se revelaram indispensáveis na resposta às exigências actuais e na maior durabilidade de intervenção, os novos elementos procuram estabelecer uma relação de diálogo e de continuidade com a preexistência, sem contudo renunciar à sua contemporaneidade. A apresentação pretende relatar e ilustrar o processo de intervenção, em equipe interdisciplinar, seguindo uma metodologia indicativa: (1) levantamentos (histórico, geométrico, construtivo); diagnóstico (inspecção, ensaios não destrutivos e mapeamento de anomalias); (2) projecto e intervenção, salvaguardando princípios de autenticidade, integridade e compatibilidade, assim como um cuidado acompanhamento da obra; (3) programação da monitorização e manutenção a médio-longo prazo.

Engineering and science projects are increasingly data driven, meaning data sets need to be creat... more Engineering and science projects are increasingly data driven, meaning data sets need to be created, stored, disseminated and reused for future use. This raises Data Management concerns and challenges. To address these concerns, Data Management Plans (DMP) are created. However, we claim Data Management Plans don’t cover all important concerns. To address this issue, we claim actual principles for Data Management Plans can be improved, using Risk Management guidelines and techniques taken from ISO 31000 and ISO 31010. Therefore, we propose a method suited for engineering and science projects that enables the creation of a Risk Management Plan (RMP), which intends to support all the decisions described in the DMP. The motivation requirements and evaluation of our work are represented by the MetaGen-FRAME project, and a case of a Civil Engineering Laboratory. As a result, our method proposal constitutes an approach to Data Governance for engineering and science projects.

Optical Communication Systems, 2019

Spatial-division multiplexing has been proposed as a next-generation solution to overcome the imm... more Spatial-division multiplexing has been proposed as a next-generation solution to overcome the imminent exhaustion of the capacity of current single-mode fiber based systems. However, these systems presented additional challenges such as the overall group-delay spread due to differential spatial-path delay and linear spatial-path coupling, and intermode nonlinear effects. The accurate modelling of these effects is preponderant on the performance optimization of mode-division multiplexing systems. This chapter reviews a method for the semianalytical modelling of linear mode coupling. Simulations using this model matched the analytical predictions for the statistics of groupdelays in few-mode fiber links, considering different coupling regimes with and without mode delay management. Furthermore, this chapter reviews the study of nonlinear performance of few-mode fiber links operating in all different linear coupling regimes and mode delay maps. The optimum link configurations minimizing the nonlinear penalty at practical levels of equalization complexity are presented. Finally, the limits of the extension of the Manakov approximation to the multi-mode case are accurately validated against a fully stochastic model developed considering distribution linear mode coupling. 10  Spatial multiplexing: modelling

Vue aérienne des fouilles de la terrasse PC 15. Cliché M. Thivet Vue générale au 1 er plan du son... more Vue aérienne des fouilles de la terrasse PC 15. Cliché M. Thivet Vue générale au 1 er plan du sondage réalisé dans le fossé défensif ceinturant le complexe monastique à la fin du IX e s. Au second plan on aperçoit, en cours de fouilles, les infrastructures maçonnées des XVIII e et XIX e s. construites dans le comblement du fossé. Cliché Y. Labaune en direction du sud-est. 4 e de couverture : Statue de divinité domestique retrouvée dans une cave de la fouille du 14, route d'Etais. Cliché C. Capdeville (Inrap) Un des visages composant le décor en stuc. Cliché J. Boislève (Inrap) UMR Archéologie Terre Histoire Sociétés En partenariat avec Avec le soutien de

This paper focuses on process visualization that is applicable to managing a Virtual Factory (VF)... more This paper focuses on process visualization that is applicable to managing a Virtual Factory (VF) business environment. It briefly provides all aspects of implementing the dashboard user interface that is to be used by the VF partners. The dashboard features state-of-the art business intelligence and provides data visualization, user interfaces and menus to support VF partners to execute collaborative processes. With advanced visualizations that produce quality graphics it offers a variety of information visualizations that brings the process data to life with clarity. This data visualization provides critical operational matrices (e.g. KPIs) required to manage virtual factories. Various technical aspects of this dashboard user interface portal are elaborated within the scope of this research such as installation instructions, technical requirements for the users and developers, execution and usage aspects, limitations and future works. The dashboard user interface portal presents d...

Cette brochure vous permettra de redecouvrir l’ensemble des interventions visant a presenter les ... more Cette brochure vous permettra de redecouvrir l’ensemble des interventions visant a presenter les resultats des prospections, fouilles preventives et programmees a Autun mais egalement dans de nombreux chantiers realises en Bourgogne.

In view of data scarcity to guide decision-making in breastfeeding women, we evaluated how mRNA v... more In view of data scarcity to guide decision-making in breastfeeding women, we evaluated how mRNA vaccines impact immune response of lactating health care workers (HCW) and the effector profile of breast milk transferred immune protection. We show that upon BNT162b2 vaccination, immune transfer via milk to suckling infants occurs through secretory IgA (SIgA) and T cells. Functionally, spike-SIgA was non-neutralizing and its titers were unaffected by vaccine boosting, indicating that spike-SIgA is produced in a T-cell independent manner by mammary gland. Even though their milk was devoid of neutralizing antibodies, we found that lactating women had higher frequencies of RBD-reactive circulating memory B cells and more RBD-IgG antibodies, when compared to controls. Nonetheless, blood neutralization titers in lactating and non-lactating HCW were similar. Further studies are required to determine transferred antibodies and spike-T cells complete functional profile and whether they can med...

Journal of Lightwave Technology, 2021

In this paper, we investigate two categories of linear frequency-modulated chirp signals suitable... more In this paper, we investigate two categories of linear frequency-modulated chirp signals suitable for single-photodiode based coherent light detection and ranging (LiDAR) systems, namely, the frequency-modulated continuous-wave (FMCW) single-sideband (SSB) signal and the amplitude-modulated doublesideband (DSB) signal, and compare their achievable receiver sensitivity performance. The DSB signal requires a simpler transmitter design, as it is real-valued and can be generated using a single-drive Mach-Zehnder modulator (MZM), while the SSB signal, which is frequency/phase modulated, requires an in-phase and quadrature modulator (IQM)-based transmitter. A theoretical analysis of direct-detection (DD) beating interference (BI) especially the local oscillator (LO) beating with itself, known as LO-LO BI, is presented. Both Monte Carlo simulations and experimental demonstrations are carried out. Good agreement between simulations and experiments is achieved. In comparison with the SSB system, the DSB signal-based system is affected by laser phase noise-induced power fluctuation, and also suffers a significant sensitivity penalty due to nonlinear LO-LO BI. A spectral guard band for mitigating LO-LO BI is necessary for the DSB signal, achieved at the expense of requiring a larger electrical bandwidth. In system tests with a delay line of 385 m, the SSB signal outperforms the DSB signal with a 10 dB better receiver sensitivity in the case with a guard band, and 25 dB better sensitivity without a guard band. Index Terms-Coherent detection, frequency-modulated continuous-wave, light detection and ranging. I. INTRODUCTION L IGHT detection and ranging (LiDAR) systems have been widely studied for numerous applications such as autonomous vehicles, 3D imaging and anemometry [1]-[6].

2020 IEEE Photonics Society Summer Topicals Meeting Series (SUM), 2020

We review recent studies of the nonlinear interference in spatial division multiplexing systems. ... more We review recent studies of the nonlinear interference in spatial division multiplexing systems. Different solution methods of the multimode Schrödinger equation are compared, highlighting the accuracy of a stochastic solution method including distributed mode coupling.

Journal of Lightwave Technology, 2021

An advanced digital backward-propagation (DBP) method using a separate-channels approach (SCA) is... more An advanced digital backward-propagation (DBP) method using a separate-channels approach (SCA) is investigated for the compensation of inter-channel nonlinearities in spatialand wavelength-multiplexed systems. Compared to the conventional DBP, intra-and inter-mode cross-phase modulation can be efficiently compensated by including the effect of the interchannel walk-off in the nonlinear step of the split-step Fourier method. We found that the SCA-DBP relaxes the step size requirements by a factor of 10, while improving performance by 0.8 dB for large walk-off and strong linear coupling. For the first time, it is shown that in spatial multiplexed systems transmission performance can be improved by sub-band processing of back propagated channels.

Journal of Lightwave Technology, 2021

We investigate polarization insensitive fiber optical parametric amplifiers (FOPAs) employing a b... more We investigate polarization insensitive fiber optical parametric amplifiers (FOPAs) employing a balanced polarization diversity loop with at least two unidirectional gain fibers. We describe and compare three variants of looped polarization insensitive FOPAs optimized for noise figure, mitigation of nonlinear impairments and their trade-off, respectively. The test scenario consists of amplifying, by up to 14 dB, a set of 21 × 50 GHz-spaced channels including a 35 GBaud PDM-QPSK signal, and evaluating a power of nonlinear crosstalk, noise figure and amplified signal BER for each variant. For the first time we demonstrate a polarization insensitive FOPA amplifying WDM signals with a noise figure as low as 5.8 dB, and a polarization insensitive FOPA with output WDM signal power of 23 dBm. The testing results let us identify likely application scenarios for each looped FOPA variant. We justify potential implementation of polarization-insensitive FOPAs in future optical communication systems by arguing its ability to deliver low noise figure <6 dB for output signal power as high as 29 dBm and to enable polarization insensitive gain for the most prominent single-polarization FOPA achievements realizing ultrawide high gain.

Computers, 2021

In recent years, research in tracking and assessing wound severity using computerized image proce... more In recent years, research in tracking and assessing wound severity using computerized image processing has increased. With the emergence of mobile devices, powerful functionalities and processing capabilities have provided multiple non-invasive wound evaluation opportunities in both clinical and non-clinical settings. With current imaging technologies, objective and reliable techniques provide qualitative information that can be further processed to provide quantitative information on the size, structure, and color characteristics of wounds. These efficient image analysis algorithms help determine the injury features and the progress of healing in a short time. This paper presents a systematic investigation of articles that specifically address the measurement of wounds’ sizes with image processing techniques, promoting the connection between computer science and health. Of the 208 studies identified by searching electronic databases, 20 were included in the review. From the perspec...

Journal of Lightwave Technology, 2020

Nonlinear performance in spatial multiplexing systems is strongly determined by the interplay bet... more Nonlinear performance in spatial multiplexing systems is strongly determined by the interplay between differential mode delay, linear mode coupling and Kerr nonlinearity. In this work we review and extend the analysis of different solution methods for the linear coupling operator in the coupled nonlinear Schrödinger equation for spatial multiplexed propagation. Numerical solution methods are compared for different operational regimes as determined by differential mode delay and linear mode coupling. Finally, we review and extend the study of digital methods to mitigate the Kerr nonlinearity for arbitrary levels of random linear mode coupling. For the first time, it is shown that in spatial multiplexing systems transmission performance can be improved by reducing the number of back propagated channels for non-negligible levels of differential mode delay.