Zooplankton as an essential component in the pelagic food web are directly linked to ecosystem functioning. Therefore, comprehension of zooplankton functional diversity (FD) and its responses environmental changes is crucial for ecosystem-based view. To identify FD drivers, we analysed 25 years summer data on brackish mesozooplankton community (including rotifers, cladocerans, copepods, meropla...

A dataset is a list of observed factor inputs and prices for a technology; profits and production levels are unobserved. We obtain necessary and sufficient conditions for a dataset to be consistent with profit maximization under a monotone and concave revenue based on the notion of cyclic monotonicity. Our result implies that monotonicity and concavity cannot be tested, and that one cannot deci...

We study the behavioral definition of complementary goods: if the price of one good increases, demand for a complementary good must decrease. We obtain its full implications for observable demand behavior (its testable implications), and for the consumer’s underlying preferences. We characterize those data sets which can be generated by rational preferences exhibiting complementarities. In a mo...

Significance of P16 hypermethylation gene in primary head/neck and colorectal tumors: it is a specific tissue event? Results of a 3-year GOIM (Gruppo Oncologico dell’Italia Meridionale) prospective study V. Agnese, S. Corsale, V. Calò, C. Augello, L. Bruno, D. Calcara, A. Crosta, V. Rodolico, G. Rinaldi, G. Cicero, F. Latteri, A. Agrusa, V. Morello, V. Adamo, G. Altavilla, G. Di Fede, E. Fioren...

A two-dimensional circulation model has been used to test the hypothesis of whether the observed lowfrequency current variations in the central Gulf of Riga, Baltic Sea, can be explained by basin-scale topographic wave response. A comparison of two-dimensional model results with measurements from a single current meter in the gulf showed good correlation. More sophisticated three-dimensional ba...

Walter Zapp was born on 4th September 1905 in Riga. In the 1920s, when he was already living in Estonia, Walter Zapp became fascinated with the idea of developing a small precision camera that would produce pictures with no lesser quality than the considerably bigger cameras. A decade later, in 1936 the first Minox camera prototype was ready. Unfortunately, no producer in Estonia was interested...