爱沙尼亚学术期刊
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作者:Rainis Haller , Johann Langemets
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2014, Vol.63 (1), pp.2-7Estonian Academy Publishers
摘要:A Banach space is said to have the diameter 2 property if the diameter of every nonempty relatively weakly open subset of its unit ball equals 2.In a paper by Abrahamsen, Lima, and Nygaard (Remarks on diameter 2 properties. J. Conv. Anal., 2013, 20, 439–452), the strong diam...
作者:Eve Oja
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2014, Vol.63 (1), pp.8-10Estonian Academy Publishers
摘要:Motivated by recent studies on the strong diameter 2 property, we exhibit a simple reason why, in many direct sums of Banach spaces, the arithmetic mean of two slices may have diameter less than 2.
作者:Vadim Kaparin , Ülle Kotta , Małgorzata Wyrwas
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2014, Vol.63 (1), pp.11-25Estonian Academy Publishers
摘要:The observability property of the nonlinear system, defined on a homogeneous time scale, is studied. The observability condition is provided through the notion of the observable space. Moreover, the observability filtration and observability indices are defined and the decomposit...
作者:Maido Rahula , Petr Vašík
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2014, Vol.63 (1), pp.26-32Estonian Academy Publishers
摘要:We present an infinitesimal interpretation of the control theory, particularly of the part concerning dynamic systems. We use the original concept of a bundle connection, which lies in the idea of fibre transportation along a path on the base manifold. The control of a proce...
作者:Jaak Kikas , Inna Rebane
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2014, Vol.63 (1), pp.33-36Estonian Academy Publishers
摘要:Replacement of the cubic term in the soft potential model of glasses with a linear one can be interpreted as an introduction of the internal pressure (coefficient of the linear term), additive to the applied external pressure. It makes the potential unique and removes the am...
作者:Hannes Keernik , Hanno Ohvril , Erko Jakobson ...
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2014, Vol.63 (1), pp.37-47Estonian Academy Publishers
摘要:Despite different techniques for the estimation of column integrated water vapour (precipitable water, PW) no method has yet been identified asthe most accurate or the reference one. In this work we report intercomparisons between four PW estimation methods – radiosonde, Aer...
作者:Artjom Jasnetski , Raimund Ubar , Anton Tsertov ...
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2014, Vol.63 (1), pp.48-61Estonian Academy Publishers
摘要:This paper presents a novel approach to automated behavioural level test program generation for microprocessors using the model of high-level decision diagrams (HLDD) for representing instruction sets. The methodology of using HLDDs for modelling of microprocessors, and a new HLD...
作者:Riina Ritasalo , Maksim Antonov , Renno Veinthal ...
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2014, Vol.63 (1), pp.62-74Estonian Academy Publishers
摘要:Wear performance of Cu matrix composites prepared by pulsed electric current sintering (PECS) was evaluated by using non-lubricated sliding tests. The studied materials contained cuprite (Cu2O), alumina (Al2O3), titaniumdiboride (TiB2) or diamond dispersoids in a coarse-grai...
作者:Jaan Habicht , Uno Mäeorg
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2014, Vol.63 (1), pp.75-85Estonian Academy Publishers
摘要:Coupling products of three major phenols appearing in the waste streams of shale oil production from kukersite oil shale were isolated and analysed using high-resolution mass spectrometry (HRMS). The pattern of water-soluble phenols in retorted kukersite semi-coke leachate change...

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