Mankind has found remedy for its illnesses in the nature since the ancient time, and used natural sources such as thermal water and caves for healing. Initially they recognized this based on experience and later the causal relationship could be explored due to the increasingly dynamic development of sciences. Hungary is very rich in medicinal and thermal waters and caves. Some of these also con...

It has been suggested that both niche-based and neutral mechanisms are important for biological communities to evolve and persist. For communities in extreme and isolated environments such as caves, theoretical and empirical considerations (low species turnover, high stress, strong convergence owing to strong directional selection) predict neutral mechanisms and functional equivalence of specie...

Caves, Christensen and Diewert proposed a method for estimating a theoretical productivity index for a firm using Törnqvist input and output indexes, augmented by exogenous estimates of local returns to scale. However, in order to implement their method, they assumed that the firm maximized revenue in each period, conditional on the observed input vector in each period, taking output prices as ...

(2002). "A late Quaternary paleoecological record from caves of southern Jamaica, West Indies." Journal of Cave and Karst Studies 64(2): 117-125.