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Global therapeutic mobilities and cancer: a scoping review
No full textInternational audienceIntroduction Research on therapeutic mobility is abundant but the field of cancer has not yet been investigated thoroughly. This scoping review aims to examine the existing evidence on global therapeutic mobility and cancer, providing a comprehensive overview of the subject. Methods We conducted a scoping review and followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses methodological guidelines. We developed a comprehensive search strategy and discussed it with the research team. We searched for peer-reviewed papers on Medline, Embase, ERIC and American Psychological Association via the Dialogue interface and Google Scholar and CAIRN bibliographic database for peer-reviewed articles. We also included grey literature, such as unpublished work and relevant reports from Érudit. We considered studies that employed quantitative or qualitative methods. Results Among the 1615 references initially selected, 767 duplicates were excluded. Then, 849 studies were screened on title and abstract and 800 were excluded as they did not meet inclusion criteria. 49 studies were fully screened and 21 were excluded as they did not meet inclusion criteria based on full-text assessment. Ultimately, 28 references were included in the data synthesis. This scoping review has shown that publications on therapeutic mobilities have multiplied in recent years, with a turning point in 2019. A range of academic disciplines and research methodologies are currently employed to describe them. A significant proportion of fieldwork is concentrated in Asia, Africa, Europe and North America. Despite the heterogeneity of the approaches and fields, there are certain common features that emerge: first, the decision to migrate for healthcare is primarily made by the patient themselves and is perceived by them as being non-choice; second, the family plays a central role at all stages of the migration; and third, the migration has a catastrophic impact in terms of social and financial burden. Conclusion In conclusion, this scoping review highlights the underexplored relationship between global therapeutic mobility and cancer, emphasising the need for increased research efforts to understand the global dynamics of cancer care mobility
The new nature of stations
No full textInternational audienceSymbols and legacies of a prestigious past, railway stations and their neighbourhoods are now the focus of strategies for adapting to global change. The book explores the various technical processes involved in this approach (reuse of building materials for renovation, environmental and landscape integration, energy transformations, etc.) and shows how these processes link railway regeneration to territorial development. The twenty-one experts assembled in this book deploy critical approaches and international perspectives to think of railway stations as transdisciplinary border objects where naturalistic, architectural and political perspectives can be articulated. As such, the book will enlighten users, as well as residents and citizens, on the processes of socio-technical transitions underway, as much as it will help them question the costs, effects and ends of the eco-modernization of our public goods and services
A new non-centrosymmetric cuprate (II) hybrid compound [C16H36N]3(Cu2Br6)(CuBr3): Study of structural and dielectric behavior
No full textInternational audienceA novel organic-inorganic hybrid material, [C16H36N]3(Cu2Br6)(CuBr3), was synthesized via slow evaporation and extensively characterized. Techniques such as X-ray diffraction, SEM/EDX, IR spectroscopy, and electric and dielectric studies were applied. Examination of the crystal structure reveals that the synthesized material adopts an orthorhombic system, specifically belonging to the P21212 space group, with unit cell parameters a = 25.635 and Aring;, b = 25.996 and Aring;, c = 20.431 and Aring;, V = 13615.3 and Aring;3, and Z = 8. Purity confirmation was established through powder X-ray diffraction analysis. Composition verification was carried out using semiquantitative EDXS analysis. The asymmetric unit consists of three tetrabutylammonium organic cations [C16H36N]3+, two [Cu2Br6]2groups, and one [CuBr3] group, forming a 0D anionic network. C-H and ctdot;Br hydrogen bonding combines to create a 3D hydrogen-bonded network, maintaining crystal stability. IR spectral analysis corroborated the compound's characterstics at room temperature. Impedance spectroscopy highlighted the compound's electrical properties, and the fitting of the Nyquist plot revealed that both inter-and intra-grains contribute to relaxation. The equivalent circuit is modeled by a combination of two parallel R-CPEs connected in series to explain the impedance results
Long-term outcomes of a 3D printed cementless fixed bearing unicompartmental knee arthroplasty
No full textInternational audienceIntroductionCementless fixation of medial unicompartmental knee arthroplasty (UKA) is attracting growing interest as a way to improve implant survival. This study aimed to evaluate the near-decade results, survivorship, and revision causes for a fixed-bearing cementless fully 3D printed UKA.Materials and methodsFrom 2011 to 2014, 168 consecutive cementless UKA implants on 165 patients had been performed in our hospital using a fixed bearing implant with a 3D printed Hydroxyapatite coated ingrowth surface both on the femoral and tibia components. At a mean follow-up of 8.73 years, 132 patients were retrospectively available for long-term assessment. Clinical outcomes and survivorship were analyzed using validated Patient Reported Outcome Measures (PROMs) such as the Oxford Knee Score (OKS), the International Knee Society (IKS) Score and the Numeric Rating Scale (NRS). The Hip-Knee-Ankle (HKA) angle was measured preoperatively and postoperatively at the last follow-up. Kaplan-Meier survival analysis was conducted with revision for any reason as primary endpoint and UKA failure as secondary endpoint.ResultsSignificant reductions were observed in terms of mean NRS from 6.90 to 1.49 points (p < 0.0001), OKS from 34.82 to 19.05 points (p < 0.0001), and IKS Score, in particular clinical knee score from 59.13 to 85.61 points (p < 0.0001) and functional knee score from 58.70 to 88.94 points (p < 0.0001). The 10-year survival rate for revision for any reason was 93.6% (95% CI: 89.5–97.8). For revision specifically due to implant mechanical failure, the 10-year survival rate was 94.9% (95% CI: 91.3–98.8). The primary revision cause was aseptic loosening of the tibial component. Factors such as age, BMI, and sex were not significantly associated with an increased risk of revision.ConclusionsThe present study shows good clinical results and long-term implant survivorship, compared to literature data, confirming the effectiveness of cementless UKA
Radiometric Cross-Calibration of an Aerial Sensor with Satellite Top-of-Atmosphere Reflectance
No full textInternational audienceSurface reflectance (SR) is essential for many remote sensing applications, but retrieving it from aerial images is challenging due to the lack of in-flight radiometric calibration and varying acquisition conditions. We propose a novel method for radiometric cross-calibration of aerial imagery using satellite Top-of-Atmosphere (TOA) reflectance. The method involves estimating at-sensor reflectance at the airborne altitude from satellite TOA reflectance, followed by spectral band adjustment and spatial alignment between satellite and airborne imagery. A linear radiometric model is derived to relate the Digital Number (DN) to the at-sensor reflectance from a selected subset of robust aerial-satellite pixel correspondences. The radiometric calibration parameter was retrieved using linear regression. The method is particularly suitable for airborne campaigns that lack onboard or in-situ radiometric calibration equipment. An ablation study is presented to analyze the selection of reliable reference pixels
On the relation between distances and seminorms on Fréchet spaces, with application to isometries
No full textInternational audienceA study is made of linear isometries on Fréchet spaces for which the metric is given in terms of a sequence of seminorms. This establishes sufficient conditions to ensure that a linear operator preserving these distances also preserves each semi-norm. As an application, characterizations are given of the isometries on various spaces including those of holomorphic functions on complex domains and continuous functions on open sets, extending the Banach-Stone theorem to surjective and nonsurjective cases
The Pressureless Euler–Navier–Stokes System
No full textIn this paper, we study the well-posedness of the pressureless Euler-Navier-Stokes system in (with ) in the critical regularity setting for a density close to . We prove a global existence result for small data for this system, and then give optimal time decay estimates
Quantum computer formulation of the FKP-operator eigenvalue problem for probabilistic learning on manifolds
No full textInternational audienceWe present a quantum computing formulation to address a challenging problem in the development of probabilistic learning on manifolds (PLoM). It involves solving the spectral problem of the high-dimensional Fokker-Planck (FKP) operator, which remains beyond the reach of classical computing. Our ultimate goal is to develop an efficient approach for practical computations on quantum computers. For now, we focus on an adapted formulation tailored to quantum computing. The methodological aspects covered in this work include the construction of the FKP equation, where the invariant probability measure is derived from a training dataset, and the formulation of the eigenvalue problem for the FKP operator. The eigen equation is transformed into a Schr\"odinger equation with a potential \curV, a non-algebraic function that is neither simple nor a polynomial representation. To address this, we propose a methodology for constructing a multivariate polynomial approximation of \curV, leveraging polynomial chaos expansion within the Gaussian Sobolev space. This approach preserves the algebraic properties of the potential and adapts it for quantum algorithms. The quantum computing formulation employs a finite basis representation, incorporating second quantization with creation and annihilation operators. Explicit formulas for the Laplacian and potential are derived and mapped onto qubits using Pauli matrix expressions. Additionally, we outline the design of quantum circuits and the implementation of measurements to construct and observe specific quantum states. Information is extracted through quantum measurements, with eigenstates constructed and overlap measurements evaluated using universal quantum gates
Monitoring of drying and imbibition of concrete using embedded resistivity sensors for the estimation of permeability
No full textInternational audienceAssessing the permeability of concrete is crucial as it governs the transport of aggressive agents, such as chlorides and carbon dioxide, which are key factors in the degradation mechanisms. Moreover, concrete's permeability constitutes an essential input parameter for durability models. Concrete's permeability can be measured directly (by experimental methods) or indirectly by fitting a transport model to saturation degree profiles. In this paper, we introduce a novel indirect method for estimating the permeability by monitoring the saturation degree profiles with embedded resistivity sensors. These embedded resistivity sensors are used for the evaluation of the saturation degree profiles over time during two experiments: drying and imbibition with tap water. Firstly, measured resistivity profiles are converted to saturation degree profiles, using a calibration curve established on concrete cores of the same formulation. Concrete's permeability is then estimated by fitting a hydric transport model to the experimental saturation degree profiles. Permeability values estimated using the embedded sensor are compared to those obtained by two reference methods: assessing the mass loss of a non-monitored specimen subjected to drying and saturation degree profiles obtained by gammadensimetry measurements. The permeability values obtained with the monitoring method are consistent for drying and imbibition experiments and fall within the range of values found in the literature. This is very promising for the continuous monitoring of concrete by embedded resistivity sensors
Fisheye camera-based local effects mitigation for better accuracy in land transportation applications
No full textInternational audienceGNSS is now deployed in every vehicle but despite all efforts to improve performance, local effects that degrade satellite signal reception still remain a challenge for land transport applications, especially when accuracy is required. State of the art solutions proposed different weighting schemes for enhanced WLS accuracy based on C/N0 and Elevation, alone or combined. We proposed in [3] the added use of a fish-eye camera for LOS/NLOS detection and their associated weights. In this paper, we try to fill in some of the gaps in our method, and in particular to consider an additional case of reception: reception through vegetation, thanks to a news segmentation of our images. A methodology to estimate specific weights for each of these reception states is proposed, based on different pseudorange error models, that are applied in WLS to be compared to state of the art. The results show that the support of the camera can enhance accuracy in specific types of environments (urban or vegetation) but that one global weighting scheme does not satisfy all of them.</div