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This study develops a statistical conditional approach to evaluate climate model performance in wind speed and direction and to project their future changes under the representative concentration pathway 8.5 scenario over inland and…

应用统计 · 统计学 2022-05-09 Qiuyi Wu , Julie Bessac , Whitney Huang , Jiali Wang

Radiometric tracking data from Pioneer 10 and 11 spacecraft has consistently indicated the presence of a small, anomalous, Doppler frequency drift, uniformly changing with a rate of ~6 x 10^{-9} Hz/s; the drift can be interpreted as a…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Slava G. Turyshev , Viktor T. Toth , Larry R. Kellogg , Eunice. L. Lau , Kyong J. Lee

In this paper, we study dynamic stability during running, focusing on the effects of speed and the use of a leg prosthesis. We compute and compare the maximal Lyapunov exponents of kinematic time-series data from subjects with and without…

This project aims to shed light on how man-made carbon emissions are affecting global wind patterns by looking for temporal and geographical correlations between carbon emissions, surface temperatures anomalies, and wind speed anomalies at…

其他计算机科学 · 计算机科学 2018-12-09 Anshul Goyal , Kartikeya Bhardwaj , Radu Marculescu

The ballistic coefficient of a bullet describes how it slows in flight due to air resistance. This article presents experimental determinations of ballistic coefficients showing that the majority of bullets tested have their previously…

科普物理 · 物理学 2007-05-23 Michael Courtney , Amy Courtney

This paper formulates optimal pacing of a cyclist on hilly terrain time-trials as a minimum-time optimal control problem. Maximal power of a cyclist serves as a time-varying constraint and depends on fatigue and recovery which are captured…

系统与控制 · 电气工程与系统科学 2021-10-29 Faraz Ashtiani , Vijay Sarthy M Sreedhara , Ardalan Vahidi , Randolph Hutchison , Gregory Mocko

We study the statistics of increments in record values in a time series $\{x_0=0,x_1, x_2, \ldots, x_n\}$ generated by the positions of a random walk (discrete time, continuous space) of duration $n$ steps. For arbitrary jump length…

统计力学 · 物理学 2016-07-19 Claude Godreche , Satya N. Majumdar , Gregory Schehr

Subseasonal forecasting -- predicting temperature and precipitation 2 to 6 weeks ahead -- is critical for effective water allocation, wildfire management, and drought and flood mitigation. Recent international research efforts have advanced…

Statistical distributions with heavy tails are ubiquitous in natural and social phenomena. Since the entries in heavy tail have disproportional significance, the knowledge of its exact shape is very important. Citations of scientific papers…

物理与社会 · 物理学 2015-06-05 Michael Golosovsky , Sorin Solomon

Individual performance metrics are commonly used to compare players from different eras. However, such cross-era comparison is often biased due to significant changes in success factors underlying player achievement rates (e.g. performance…

物理与社会 · 物理学 2020-04-21 Alexander M. Petersen , Orion Penner

Simultaneous concurrence of extreme values across multiple climate variables can result in large societal and environmental impacts. Therefore, there is growing interest in understanding these concurrent extremes. In many applications, not…

应用统计 · 统计学 2021-03-16 Whitney K. Huang , Adam H. Monahan , Francis W. Zwiers

Recent large language models have been trained on vast datasets, but also often on repeated data, either intentionally for the purpose of upweighting higher quality data, or unintentionally because data deduplication is not perfect and the…

With the development of measurement technology, data on the movements of actual games in various sports can be obtained and used for planning and evaluating the tactics and strategy. Defense in team sports is generally difficult to be…

人工智能 · 计算机科学 2022-05-10 Kosuke Toda , Masakiyo Teranishi , Keisuke Kushiro , Keisuke Fujii

Extreme events are an important theme in various areas of science because of their typically devastating effects on society and their scientific complexities. The latter is particularly true if the underlying dynamics does not lead to…

数据分析、统计与概率 · 物理学 2015-05-30 Aicko Yves Schumann , Nicholas R. Moloney , Jörn Davidsen

Relative sea level records climatic change as well as vertical land movement. In Barbados, uplift variation is necessary to interpret one of the most complete coral reef records. Here we show that an abrupt mass unloading of 30 km3 caused…

地球物理 · 物理学 2022-07-07 Julien Gargani

We study the simple random walk on stochastic hyperbolic half planar triangulations constructed in Angel and Ray [3]. We show that almost surely the walker escapes the boundary of the map in positive speed and that the return probability to…

概率论 · 数学 2014-08-20 Omer Angel , Asaf Nachmias , Gourab Ray

We investigate statistics of the decay process in the equal-mass three-body problem with randomized initial conditions. Contrary to earlier expectations of similarity with "radioactive decay", the lifetime distributions obtained in our…

星系天体物理 · 物理学 2015-05-18 Victor Orlov , Alexey Rubinov , Ivan Shevchenko

The Pioneer 10/11 spacecraft yielded the most precise navigation in deep space to date. However, their radio-metric tracking data has consistently indicated the presence of a small, anomalous, Doppler frequency drift. The drift is a…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Slava G. Turyshev , Michael Martin Nieto , John D. Anderson

Fluctuations of the human heart beat constitute a complex system that has been studied mostly under resting conditions using conventional time series analysis methods. During physical exercise, the variability of the fluctuations is…

数据分析、统计与概率 · 物理学 2020-08-13 Matti Molkkari , Giorgio Angelotti , Thorsten Emig , Esa Räsänen

The phenomenon of irregular cessation and subsequent reversal of the large-scale circulation in turbulent Rayleigh-B\'enard convection is theoretically analysed. The force and thermal balance on a single plume detached from the thermal…

混沌动力学 · 物理学 2009-11-10 Francisco Fontenele Araujo , S. Grossmann , D. Lohse