Circuits of thermodynamic devices in stationary non-equilibrium

We introduce a non-linear theory of thermodynamic circuits in non-equilibrium stationary states. The non-equilibrium conductance matrix of a composite device is obtained from the ones of its sub-devices. This generalizes to thermodynamic devices the concept of equivalent impedance defined in electronics. An abstract example and the serial connection of two thermoelectric generators (TEG) with constant thermoelectric coefficients are considered. Interestingly, a current-dependent electrical resistance emerges from this connection.Comment: 5 pages, 3 figure

Methods and conversations in (post)modern thermodynamics

Lecture notes after the doctoral school (Post)Modern Thermodynamics held at the University of Luxembourg, December 2022, 5-7, covering and advancing continuous-time Markov chains, network theory, stochastic thermodynamics, large deviations, deterministic and stochastic chemical reaction networks, metastability, martingales, quantum thermodynamics, and foundational issues

Subjecting Elite Athletes to Inspiratory Breathing Load Reveals Behavioral and Neural Signatures of Optimal Performers in Extreme Environments

Background: It is unclear whether and how elite athletes process physiological or psychological challenges differently than healthy comparison subjects. In general, individuals optimize exercise level as it relates to differences between expected and experienced exertion, which can be conceptualized as a body prediction error. The process of computing a body prediction error involves the insular cortex, which is important for interoception, i.e. the sense of the physiological condition of the body. Thus, optimal performance may be related to efficient minimization of the body prediction error. We examined the hypothesis that elite athletes, compared to control subjects, show attenuated insular cortex activation during an aversive interoceptive challenge. Methodology/Principal Findings: Elite adventure racers (n = 10) and healthy volunteers (n = 11) performed a continuous performance task with varying degrees of a non-hypercapnic breathing load while undergoing functional magnetic resonance imaging. The results indicate that (1) non-hypercapnic inspiratory breathing load is an aversive experience associated with a profound activation of a distributed set of brain areas including bilateral insula, dorsolateral prefrontal cortex and anterior cingulated; (2) adventure racers relative to comparison subjects show greater accuracy on the continuous performance task during the aversive interoceptive condition; and (3) adventure racers show an attenuated right insula cortex response during and following the aversive interoceptive condition of non-hypercapnic inspirator

Research and Design of a Routing Protocol in Large-Scale Wireless Sensor Networks

无线传感器网络，作为全球未来十大技术之一，集成了传感器技术、嵌入式计算技术、分布式信息处理和自组织网技术，可实时感知、采集、处理、传输网络分布区域内的各种信息数据，在军事国防、生物医疗、环境监测、抢险救灾、防恐反恐、危险区域远程控制等领域具有十分广阔的应用前景。 本文研究分析了无线传感器网络的已有路由协议，并针对大规模的无线传感器网络设计了一种树状路由协议，它根据节点地址信息来形成路由，从而简化了复杂繁冗的路由表查找和维护，节省了不必要的开销，提高了路由效率，实现了快速有效的数据传输。 为支持此路由协议本文提出了一种自适应动态地址分配算——ADAR（AdaptiveDynamicAddre...As one of the ten high technologies in the future, wireless sensor network, which is the integration of micro-sensors, embedded computing, modern network and Ad Hoc technologies, can apperceive, collect, process and transmit various information data within the region. It can be used in military defense, biomedical, environmental monitoring, disaster relief, counter-terrorism, remote control of haz...学位：工学硕士院系专业：信息科学与技术学院通信工程系_通信与信息系统学号：2332007115216

N-States Continuous Maxwell Demon

Maxwell’s demon is a famous thought experiment and a paradigm of the thermodynamics of information. It is related to Szilard’s engine, a two-state information-to-work conversion device in which the demon performs single measurements and extracts work depending on the state measurement outcome. A variant of these models, the continuous Maxwell demon (CMD), was recently introduced by Ribezzi-Crivellari and Ritort where work was extracted after multiple repeated measurements every time that τ is in a two-state system. The CMD was able to extract unbounded amounts of work at the cost of an unbounded amount of information storage. In this work, we built a generalization of the CMD to the N-state case. We obtained generalized analytical expressions for the average work extracted and the information content. We show that the second law inequality for information-to-work conversion is fulfilled. We illustrate the results for N-states with uniform transition rates and for the N = 3 case

Nouvelle gravure sur le menhir de la Bretellière à Saint-Macaire-en-Mauges dans le Maine-et-Loire

Raux Paul, Joussaume Roger. Nouvelle gravure sur le menhir de la Bretellière à Saint-Macaire-en-Mauges dans le Maine-et-Loire. In: Bulletin de la Société préhistorique française, tome 97, n°3, 2000. pp. 484-486

Nouvelle gravure sur le menhir de la Bretellière à Saint-Macaire-en-Mauges dans le Maine-et-Loire

Raux Paul, Joussaume Roger. Nouvelle gravure sur le menhir de la Bretellière à Saint-Macaire-en-Mauges dans le Maine-et-Loire. In: Bulletin de la Société préhistorique française, tome 97, n°3, 2000. pp. 484-486

N-States Continuous Maxwell Demon

International audienceMaxwell’s demon is a famous thought experiment and a paradigm of the thermodynamics of information. It is related to Szilard’s engine, a two-state information-to-work conversion device in which the demon performs single measurements and extracts work depending on the state measurement outcome. A variant of these models, the continuous Maxwell demon (CMD), was recently introduced by Ribezzi-Crivellari and Ritort where work was extracted after multiple repeated measurements every time that τ is in a two-state system. The CMD was able to extract unbounded amounts of work at the cost of an unbounded amount of information storage. In this work, we built a generalization of the CMD to the N-state case. We obtained generalized analytical expressions for the average work extracted and the information content. We show that the second law inequality for information-to-work conversion is fulfilled. We illustrate the results for N-states with uniform transition rates and for the N = 3 case.</jats:p

Thermodynamic Circuits II: Nonequilibrium conductance matrix for a thermoelectric converter

International audienceStarting from a linear flux-force relation of a thermoelectric material in local equilibrium, we derive non-linear relations between the currents and forces of a thermoelectric converter (TEC) driven far from equilibrium. Our investigation focuses on a one-dimensional TEC of finite thickness. Building on the achievements of the first paper of this series, we unveil the conservation laws governing physical currents (ie linearly dependent currents). Using the latter allows to put forward two relevant bases of physical and fundamental currents. For these bases, we introduce the concept of non equilibrium conductance matrix to describe the current-force relations of a TEC. This concept will be at the core of the third paper of this series in which we illustrate the serial and parallel association on composite TECs. Finally, we determine in a unified way the optimal working points of the TEC in its two operating modes: the electric generator and the heat pump

La nécropole romaine de Lattes

The purpose of this publication is to review, in the form of a monograph, all excavation documentation and archaeological material with a view to reconstructing archaeological sites. The typo-chronological study of the material and the evolution of the funerary practices of this unpublished necropolis constitutes an important state of the society a century after the Roman conques