Statistical testing of directions observations independence

Independence of observations is often assumed when adjusting geodetic network. Unlike the\ud distance observations, no dependence of environmental conditions is known for horizontal\ud direction observations. In order to determine the dependence of horizontal direction observations,\ud we established test geodetic network of a station and four observation points. Measurements of\ud the highest possible accuracy were carried out using Leica TS30 total station along with precise\ud prisms GPH1P. Two series of hundred sets of angles were measured, with the first one in bad\ud observation conditions. Using different methods, i.e. variance–covariance matrices, x2 test and analyses of time series, the independence of measured directions, reduced directions and horizontal angles were tested. The results show that the independence of horizontal direction\ud observations is not obvious and certainly not in poor conditions. In this case, it would be appropriate for geodetic network adjustments to use variance–covariance matrix calculated from measurements instead of diagonal variance–covariance matrix

Crime as a business, business as a crime

Purpose: This paper endorses the claim that in transitional societies the line between business and crime is elusive because weak states foster a legal order that is formalistic, bureaucratic, politically biased and prone to corruption. Design/Methods/Approach: Three elements are discussed in the paper. First, the paper briefly analyses legal and institutional state of affairs in transitional Western Balkans societies that condone organised crime. Secondly, it investigates the phenomenology of the (corruptive) crime behaviour, explaining how it managed to integrate into society in the context of a weak state. Thirdly, the paper investigates why state policies and measures fail to fight crime as the business. In this part the paper contests a traditional definition of criminal organisation as a hierarchical one, claiming that mafias are not organizations in a traditional sense. Findings: The paper emphasizes that the fight against organised crime is not just a fight against individuals or individual criminal behaviourbut a fight to increase the efficiency of the government. The paper furthermore asserts that better understand of the organised crime problem can occur only if its fighting and addressing happens from the point of view of a good governance. Namely, the precondition to fight against organised crime or parallel activity requires increased efficiency and capacity of governmental institutions. Originality/Value: This paper adds to the academic and practical understanding of the organised crime in the post-transitional settings. Apart from being instructive and up-todated source of information for the regional setting it deals with, the paper sheds a new light on understanding of organised crime

Qubit transformations on Rashba ring with periodic potential

A spin-qubit transformation protocol is proposed for an electron in a mesoscopic quantum ring with tunable Rashba interaction controlled by the external electric field. The dynamics of an electron driven around the ring by a series of Landau-Zenner-like transitions between a finite number of local voltage gates is determined analytically. General single-qubit transformations are demonstrated to be feasible in a dynamical basis of localized pseudo-spin states. It is also demonstrated that by the use of suitable protocols based on changes of the Rashba interaction full Bloch sphere can be covered. The challenges of a possible realization of the proposed system in semiconductor heterostructures are discussed.Comment: submitted to New Journal of Physic