Gross shell structure at high spin in heavy nuclei

Experimental nuclear moments of inertia at high spins along the yrast line have been determined systematically and found to differ from the rigid-body values. The difference is attributed to shell effects and these have been calculated microscopically. The data and quantal calculations are interpreted by means of the semiclassical Periodic Orbit Theory. From this new perspective, features in the moments of inertia as a function of neutron number and spin, as well as their relation to the shell energies can be understood. Gross shell effects persist up to the highest angular momenta observed.Comment: 40 pages total; 22 pages text, 19 figures sent as 27 .png file

Governance of expedition cruise ship tourism in the arctic: A comparison of the Canadian and Russian Arctic

Expedition style cruise tourism represents a significant proportion of shipping activity across the Arctic. This article compares and contrasts governance structures that manage the cruise sector from case studies located in the Canadian (Nunavut) and the Russian Arctic (Murmansk and Arkhangelsk regions). Analysis of sources, including interviews with key stakeholders, strategic tourism plans, and an inventory of institutional governance reveals that in both these locations there is no central authority to govern the growth of the industry, no specific cruise or yacht management plans, and no site guidelines for highly visited shore locations (other than in protected areas). The article concludes that under current conditions there are significant barriers to supporting development of the expedition cruise sector in both these Arctic regions

Muon-spin-rotation study of the magnetic structure in the tetragonal antiferromagnetic state of weakly underdoped Ba1−x _{1-x} Kx _{x} Fe2 _{2} As2 _{2}

With muon spin rotation ($\mu$SR) we studied the transition between the orthorhombic antiferromagnetic (o-AF) and the tetragonal antiferromagnetic (t-AF) states of a weakly underdoped Ba$_{1-x}$K$_{x}$Fe$_{2}$As$_{2}$ single crystal. We observed some characteristic changes of the magnitude and the orientation of the magnetic field at the muon site which, due to the fairly high point symmetry of the latter, allow us to identify the magnetic structure of the t-AF state. It is the so-called, inhomogeneous double-$\mathbf{Q}$ magnetic structure with $c$-axis oriented moments which has a vanishing magnetic moment on half of the Fe sites.Comment: 5 pages, 4 figures. Supplementary Material: 8 figure

Different organization forms of cognitive activity in classes of foreign language

The article describes the potentiality of using different organization forms of foreign language classes for the formation of professional skillsВ статье рассматриваются возможности использования различных форм организации занятий по иностранному языку для формирования коммуникативных навыков специалист

Robust estimation and forecasting for beta-mixed hierarchical models of grouped binary data

The paper focuses on robust estimation and forecasting techniques for grouped binary data with misclassified responses. It is assumed that the data are described by the beta-mixed hierarchical model (the beta-binomial or the beta-logistic), while the misclassifications are caused by the stochastic additive distortions of binary observations. For these models, the effect of ignoring the misclassifications is evaluated and expressions for the biases of the method-of-moments estimators and maximum likelihood estimators, as well as expressions for the increase in the mean square error of forecasting for the Bayes predictor are given. To compensate the misclassification effects, new consistent estimators and a new Bayes predictor, which take into account the distortion model, are constructed. The robustness of the developed techniques is demonstrated via computer simulations and a real-life case study.Peer Reviewe

Stiffness modeling of NAVARO II transmission system

International audienc