While the social-structural construction of cultural taste has been a sustained subject of inquiry within the sociology of culture, its temporal dynamics have not received the same treatment. Using repeated cross-sectional survey data (1982-2012) and a novel age-period-cohort estimation strategy ...
Establishment and spatial associations of recruits in meadow gaps QuestionsWhat is the spatio-temporal dynamics of recruit (seedlings and vegetative sprouts) establishment in meadow gaps? What processes prevail during rec... P Fibich,A Vítová,P Macek,... - 《Journal of Vegetation Science》 被...
a3. Studies of transmission dynamics have revealed the importance of heterogeneity in host behaviour and physiology, and of contact processes operating at different spatial and temporal scales. An important future challenge is to determine the key transmission mechanisms maintaining the persistence of diffe...
Assessment of spatial and temporal dynamics of tropical forest cover: A case study in Malkangiri district of Orissa, India International Journal of Remote Sensing 19: pp. 391-410 CrossRef Prance, G. T. Forest refuges: Evidence from woody angiosperms. In: Prance, G. T... C Pattanaik,CSRM...
An imaging instrument can be characterized by its spatial resolution, contrast resolution, and temporal resolution. The capabilities of computed tomography (CT) relative to other cardiac imaging modalities can be understood in these terms. The purpose of this review is to characterize the spatial, con...
我们知道与 online RL不同,offline RL并不需要与环境进行实时的交互,它的模型只需要处理已经采集好的trajectory数据,并且只能用这些数据集中的 trajectory来进行训练,这一点和supervised learning 是极为相似的。除了最早的基于 TD (temporal difference) 的算法,以及 Q-learning, Behavior Cloning 之外,还有一类方法,...
Bet-hedging is defined as a strategy that reduces the temporal variance in fitness at the expense of a lowered arithmetic mean fitness. After a few technical points, we will here argue that this definition of bet-hedging is badly suited for models with density- and/or frequency-dependent fitne...
A multiple pseudorandom-bit generator based on a spatiotemporal chaotic map An approach to generate multiple pseudorandom-bit sequences from a single spatiotemporal chaotic system is proposed in this Letter. A coupled map lattice i... L Ping,L Zhong,WA Halang,... - 《Physics Letters A》 ...
It is essential to estimate the spatial and temporal overlap ov... L Pichegru,PG Ryan,CL Bohec,... - 《Marine Ecology Progress》 被引量: 136发表: 2009年 Incentive instruments for the sustainable use of marine resources The Australian Government recently ratified the "Oceans Policy" which ...
Wherever a loose bed of sand is subject to sufficiently strong winds, aeolian dunes form at predictable wavelengths and growth rates. As dunes mature and coarsen, however, their growth trajectories become more idiosyncratic; nonlinear effects, sediment s