7,544 research outputs found
Yuan Chong 袁充 (544-618) (Defu 德符) — Astrologue, astronome et fonctionnaire des Chen et des Sui
No full textNotice biographique sur Yuan Chong 袁充 (544-618) (Defu 德符), astrologue, astronome et fonctionnaire des Chen et des Sui, à paraître dans Dictionnaire des individus et groupes humains dans la Chine du haut Moyen Âge, ed. François Martin et Damien Chaussende
Yuan Chong 袁充 (544-618) (Defu 德符) – Astrologue, astronome et fonctionnaire des Chen et des Sui
No full textInternational audienceDaniel P. Morgan, « Yuan Chong 袁充 (544-618) (Defu 德符) – Astrologue, astronome et fonctionnaire des Chen et des Sui », dans Dictionnaire biographique du haut Moyen Âge chinois, François Martin et Damien Chaussende (éd.), Paris, Les Belles Lettres, 2020, p. 604-606
Yuan Chong 袁充 (544-618) (Defu 德符) – Astrologue, astronome et fonctionnaire des Chen et des Sui
No full textInternational audienceDaniel P. Morgan, « Yuan Chong 袁充 (544-618) (Defu 德符) – Astrologue, astronome et fonctionnaire des Chen et des Sui », dans Dictionnaire biographique du haut Moyen Âge chinois, François Martin et Damien Chaussende (éd.), Paris, Les Belles Lettres, 2020, p. 604-606
Yuan Chong 袁充 (544-618) (Defu 德符) – Astrologue, astronome et fonctionnaire des Chen et des Sui
No full textInternational audienceDaniel P. Morgan, « Yuan Chong 袁充 (544-618) (Defu 德符) – Astrologue, astronome et fonctionnaire des Chen et des Sui », dans Dictionnaire biographique du haut Moyen Âge chinois, François Martin et Damien Chaussende (éd.), Paris, Les Belles Lettres, 2020, p. 604-606
Feasibility of Software-Based Duty Cycling of GPS for Trajectory-Based Services
No full textEnergy-efficient localization is increasingly important for many types of smartphone apps. The research community has argued that fixed duty cycling of GPS is not a good choice for trajectory-based services concerning route accuracy. In this paper, we describe the design and implementation of a highly accurate map matching and path construction algorithm. Furthermore, with thorough field experiments, we show that fixed duty cycling of a smartphone GPS receiver is a feasible approach for trajectory-based services, and it can achieve considerable energy conservation without sacrificing much route accuracy. When increasing the GPS sampling period beyond 120 seconds, it saves at least 78% energy in comparison to continuous GPS sampling, while the loss of route accuracy tends to be stable around 23%.Li, Xiaohan, Yuan, Fengpeng, & Lindqvist, Janne. (2016). Feasibility of Software-Based Duty Cycling of GPS for Trajectory-Based Services. In Proceedings of Consumer Communications & Networking Conference (CCNC2016-EdgeCom), Las Vegas, NV. http://ieeexplore.ieee.org/xpl/conhome.jsp?reload=true&punumber=1001153Peer reviewe
Tian guo hua yuan
No full text安徒生原著 ; 蔡慧冰改寫 ; 陳楠舟插圖.改寫自Andersen的Paradisets have.Antusheng yuan zhu ; Cai Huibing gai xie ; Chen Nanzhou cha tu
Raw data for Yuan et al., 2023, litter CNP concentration, JOE
No full textRaw data for Yuan et al., 2023, Plant litter initial concentrations of C, N, and P. Any use of the dataset please email to the corresponding author at [email protected].</p
NUMERICAL SIMULATION OF HOT ACCRETION FLOWS. II. NATURE, ORIGIN, AND PROPERTIES OF OUTFLOWS AND THEIR POSSIBLE OBSERVATIONAL APPLICATIONS
No full textHydrodynamical (HD) and magnetohydrodynamical (MHD) numerical simulations of hot accretion flows have indicated that the inflow accretion rate decreases inward. Two models have been proposed to explain this result. In the adiabatic inflow-outflow solution (ADIOS), this is because of the loss of gas in the outflow. In the alternative convection-dominated accretion flow model, it is thought that the flow is convectively unstable and gas is locked in convective eddies. We investigate the nature of the inward decrease of the accretion rate using HD and MHD simulations. We calculate various properties of the inflow and outflow such as temperature and rotational velocity. Systematic and significant differences are found. These results suggest that the inflow and outflow are not simply convective turbulence; instead, systematic inward and outward motion (i.e., real outflow) must exist. We have also analyzed the convective stability of MHD accretion flows and found that they are stable. These results favor the ADIOS scenario. We suggest that the mechanisms of producing outflow in HD and MHD flows are the buoyancy associated with the convection and the centrifugal force associated with the angular momentum transport mediated by the magnetic field, respectively. The latter is similar to the Blandford & Payne mechanism but no large-scale open magnetic field is required. We discuss some possible observational applications, including the Fermi bubble in the Galactic center and winds in active galactic nuclei and black hole X-ray binaries
On My Way: Optimizing Driving Routes for Navigation Applications
No full textConventionally, the route recommendations given by GPS navigation applications have been considered as the optimal route search problem only between two locations - origin and destination. Sometimes people want to visit several intermediate locations prior to reaching their final destination. For example, travelers may want to visit a diner and a gas station before arriving at their vacation destination. Although there is likely to be many choices that are available along the route to the destination, only one place from each type should be chosen. Furthermore, in new emerging application domains, such as “physical-world crowdsourcing”, people may want to opportunistically visit some places in order to complete personal or work related tasks. Our work explores a design space where we try to reduce the amount of requests made to third-party map and route data providers. We explore the simple idea of using the Euclidean distance as a rough estimate for the optimal route between destinations with multiple waypoints. Our preliminary results indicate that with over 80% of test cases, this simple Euclidean distance estimator approach gives at least one optimal routing alternative.Yuan, Fengpeng, Song, Xueyuan & Lindqvist, Janne. (2016). On My Way: Optimizing Driving Routes for Navigation Applications. In Proceedings of Consumer Communications & Networking Conference (CCNC2016-EdgeCom), Las Vegas, NV. http://ieeexplore.ieee.org/xpl/conhome.jsp?reload=true&punumber=1001153Peer reviewe
Introduction to the Song-Yuan-Ming Transition in Chinese History
No full textAbridged translation of my \u27Introduction\u27 to The Song-Yuan-Ming Transition in Chinese History by Zhang Yi. -- author-supplied description
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