Relaxation approximation of Friedrich's systems under convex constraints

This paper is devoted to present an approximation of a Cauchy problem for Friedrichs' systems under convex constraints. It is proved the strong convergence in L^2\_{loc} of a parabolic-relaxed approximation towards the unique constrained solution

Bi-manual haptic interaction in virtual worlds

In the Virtual Reality field, force-feedback interfaces called haptic interfaces can simulate tactile and kinesthetic interactions. Bi-manual haptic interactions can better immerse users in virtual worlds than one hand interactions and more tasks can be realized such as parallel or precision tasks. Only a few studies deals specifically with bi-manual haptic interactions and previous work mainly extends uni-manual techniques directly to two hands. The document reports possible lacks of bi-manual-specific management of real and virtual workspace and the lack of genericity of solutions using haptic interfaces. The study on bi-manual haptic interactions led to the realization of a framework allowing to use simultaneously several haptic devices. This framework simulates a 3D virtual world coupled with a physical simulation. We realized new specifically bi-manual haptic interaction techniques allowing to control camera, to extend the virtual workspace by a hybrid position/rate control and to help bi-manual pick and place task. The document point out issues such as collision between haptic devices and unification of two different haptic interfaces

Quantification Model of Smart City Development Dynamics Using Structural Equation Modeling

학위논문(석사)--서울대학교 대학원 :공과대학 건설환경공학부,2019. 8. 지석호.In recent years, smart city projects have drawn significant attention as initiatives for enhancing urban development and regeneration. Many studies have incorporated technical and non-technical enablers to better control the design, planning, and progress management of smart cities. However, despite considerable efforts and achievements, the direct and indirect effects of smart city enablers on urban performances have not been quantified comprehensively. Thus, due to this lack of in-depth quantification and understanding, urban leaders encounter difficulties in establishing proper strategies and policies for the successful development of smart cities. To address this issue, the present study has used Structural Equation Modeling (SEM) to identify the critical enablers of smart cities and to quantify their dynamic effects (i.e., direct and indirect effects) on the performances of such cities. More specifically, the authors applied SEM to test and estimate the relationships between four enabler clusters (i.e., technological infrastructure, open governance, intelligent community, and innovative economy) and four performance objectives (i.e., efficiency, sustainability, livability, and competitiveness) using the actual data of 50 smart cities. The statistical results demonstrated that non-technical enabler clusters (i.e., open governance, intelligent community, and innovative economy), as well as the technical drivers (i.e., technological infrastructure), have significant impacts on the performances of smart cities with their highly interrelated, synergetic dynamics. The high percentage of variance explained for performance objectives, which varied from about 71% to 91%, was indicative of good explanatory power. Based on those mathematical findings, urban leaders can enhance strategic planning for smart city transitions through proper policy management.Chapter 1 Introduction 1 1.1 Research Background 1 1.2 Problem Statement 4 1.3 Research Objective 6 1.4 Research Scope 7 1.5 Research Process 8 Chapter 2 Literature Review 9 2.1 Identification of Smart City Enablers 9 2.2 Quantification of Enablers Direct Effects 11 2.3 Limitations of Quantification Strategies 13 Chapter 3 Quantification Model Development 15 3.1 Research Overview 15 3.2 Latent Variables Specification 17 3.3 Hypothetical Model Establishment 22 3.4 Structural Equation Modeling (SEM) 25 Chapter 4 Model Testing and Results 31 4.1 Data Collection and Preparation 31 4.2 SEM Analysis 36 4.3 Results and Discussions 43 Chapter 5 Model Applications 52 5.1 Smart City Maturity Assessment 52 5.2 Smart City Macro Trends Analysis 55 Chapter 6 Conclusion 58 6.1 Summary and Contributions 58 6.2 Limitations and Future Study 60 Bibliography 62 Appendix A 69 Appendix B 70 Abstract (Korean) 71Maste

Aberration-free calibration for 3D single molecule localization microscopy

We propose a straightforward sample-based technique to calibrate the axial detection in 3D single molecule localization microscopy (SMLM). Using microspheres coated with fluorescent molecules, the calibration curves of PSF-shaping- or intensity-based measurements can be obtained for any required depth range from a few hundreds of nanometers to several tens of microns. This experimental method takes into account the effect of the spherical aberration without requiring computational correction.Comment: 8 pages, 2 figures. Submitted to Optics Letters on October 12th, 201

Le castellum de La Malène en Gévaudan. Un " rocher monument " du premier Moyen Age (VIe-VIIe s.)

Présentation des premiers résultats de la fouille programmée conduite entre 2008 et 2011 sur un établissement perché et fortifié (V-VIIe s.) des gorges du Tarn en Lozère. La mission de terrain s'est déroulée dans le cadre du programme "Oppida et castra du premier Moyen Age en France méditerranéenne" initié par le CNRS

Gras – Chastelas de Baravon

Ce site de hauteur se situe à 2 km au nord-ouest de la Dent de Retz et à 2,5 km au nord de la ferme de Retz. Il se visualise très bien dans le paysage par une plate-forme calcaire qui culmine à 478 m d’altitude. En 1869, J. Ollier de Marichard dénombre 30 habitations, organisées autour de deux rues perpendiculaires de 3 m de large. De 1964 à 1968, M. Gallet entreprend des sondages. Il met en évidence une occupation chalcolithique, un habitat du Bronze final et un du haut Moyen Âge. C’est à ce..

Un monasterium à l’ombre d’un oppidum : le cas de l’abbaye Saint-Géraud d’Aurillac

Un nouveau regard est porté la genèse du monastère Saint-Géraud d’Aurillac, son développement et ses interactions avec la ville médiévale. Ce programme de recherche permet de faire un bilan sur toute la documentation disponible, mais aussi de produire des métadonnées à travers plusieurs axes de recherche. Une première journée d’étude a permis de rassembler des chercheurs de différents horizons. L’objectif était d’avoir un autre regard sur la documentation écrite et graphique médiévale, modern..

Sceautres – Les Panègues

Identifiant de l'opération archéologique : 22948 Date de l'opération : 2007 (SU) Fin octobre  2006, un propriétaire déclarait la découverte d’ossements humains sur ses terres agricoles. Après une première prise de contact avec ce dernier, il a confié pour étude les dits ossements ainsi qu’une boucle sans ardillon en alliage cuivreux. L’étude ostéologique (Solenn de Lerminat, LAMM, MMSH, Aix-en-Provence) a permis d’identifier les restes d’au moins deux individus. Le coffrage en dalles de deux ..