Seasonality and extent of extratropical TST derived from in-situ CO measurements during SPURT P. Hoor , C. Gurk, D. Brunner, M.I. Hegglin, H. Wernli , and H. Fischer Institute for Atmospheric and Climate Science, Swiss Federal Institute of Technology, Zürich, Switzerland Max Planck Institute for Chemistry, Air Chemistry, Mainz, Germany Institute for Atmospheric Physics, University of Mainz, Ger...

Abstmct The determination of the spatia) extent of geo-obiects is generally approached through their boundaries or, more precisely, thrcugh the positions of their boundary points. The analysis of the geometric uncertainty of the objects is therefore often based on accuracy models for the coordinates of these points. In many survey disciplines objects are mapped, however, that are not crisp wel)...

Climate change is a pressing and present issue which has come to be at the forefront in the last few decades. As such, understanding climate change is of utmost importance. In addition to environmental impact, these changes will have social and economic ramifications as these changes will affect the way in which we utilize land and sea resources in the future. The minimum annual arctic sea ice ...

The perception of linear extent in haptic touch appears to be anisotropic, in that haptically perceived extents can depend on the spatial orientation and location of the object and, thus, on the direction of exploratory motion. Experiments 1 and 2 quantified how the haptic perception of linear extent depended on the type of motion (radial or tangential to the body) when subjects explored differ...

Morbidity studies based on hospital admission rates are complicated because all admissions to a defined group of hospitals rarely come from a defined population and all admissions from a defined population rarely go to a defined group of hospitals. As a consequence, if the starting point of the study is either the complete records of a hospital group or the complete enumeration of the populatio...

We show that the extent of a Tychonoff space of countable weak extent can be arbitrary big. The extent of X is e(X) = sup{|F | : F ⊂ X is closed and discrete} while we(X) = min{τ : for every open cover U of X there is A ⊂ X such that |A| ≤ τ and St(A,U) = X} is the weak extent of X (also called the star-Lindelöf number of X). Also we show that the extent of a normal space with countable weak ex...

BACKGROUND Surgical resection is the key to management of thyroid cancer, but determining the optimal surgical procedure for individual cases has been controversial. METHODS The author reviews several large data bases that allow examination of prognostic criteria for long-term outcomes. RESULTS Patients can be classified into good- or poor-risk groups that assist defining the optimal surgic...