In this paper, an algorithm for projective reconstruction of general 3D-curves from a number of its 2D-images taken by uncalibrated cameras is proposed. No point correspondences between the images are assumed. The curve and the view points are uniquely reconstructed, modulo projective transformations. The algorithm is divided into two separate algorithms, where the output of the rst is used as ...

Examining the relationship between factor endowments and production patterns using data from Japanese prefectures and from OECD nations, we find evidence of substantial production indeterminacy. Regressions of outputs on endowments yield prediction errors six to 30 times larger for goods traded relatively freely than for non-traded goods. We argue that a compelling explanation for these results...

We calculate the number of unary clones (submonoids of the full transformation monoid) containing the permutations, on an infinite base set. It turns out that this number is quite large, sometimes as large as the whole clone lattice. 1. Background and the result Fix a set X and consider for all n ≥ 1 the set O(n) of n-ary operations on X. If we take the union O = ⋃ n≥1 O (n) over these sets, we...

a r t i c l e i n f o This paper studies how financial development affects the volatility of GDP growth through the channel of sectoral reallocation. For 28 OECD countries over the period 1970–2007, we construct a benchmark industrial portfolio that minimizes the economy's long-term volatility for a given level of long-term labor productivity growth. We find that financial development substanti...

Let k be a field of characteristic 0 and let Vk be the category of smooth projective varieties over k. By ∼ we denote an adequate equivalence relation for algebraic cycles on varieties [Ja00]. For every X ∈ Vk let A i ∼(X) = (Z (X)/ ∼)⊗Q be the Chow group of codimension i cycles on X modulo the chosen relation ∼ with coefficients in Q. Let X, Y ∈ Vk, let X = ∪Xi be the connected components of X...

The veto players theory claims that there are institutional and partisan actors, individual or collective, that act as veto points in the process of legislation. Each veto point must give its consent for a new law to pass, thus altering the status quo. This study investigates the role of federalism, which is generally characterized by bicameralism and a decentralized state, as a veto player in ...

Existing studies on the effects of fiscal policy under imperfect competition typically treat each firm’s price-cost markup as fixed. This paper examines the implications of endogenising the markup in a simple model of income taxation under monopolistic competition. It is demonstrated that an increase in income tax reduces the number of firms, lessens competition among surviving firms and raises...

This paper addresses a bottleneck problem in mobile file systems: the propagation of updated large files from a weaklyconnected client to its servers. It proposes an efficient mechanism called operation shipping or operation-based update propagation. In the new mechanism, the client ships the user operation that updated the large files, rather than the files themselves, across the weak network....

background: the objectives of an educational system in a society are based on society's requirements. since personnel knowledge and skill are not qualified with the advantages of science and invention of new tools, new needs are arisen. comparing the curriculum of undergraduate course of operating room of our country with international societies, it seems that this curriculum is not a good one ...

This paper presents a new algorithm based on Model Reference Adaptive System (MRAS) and its stability analysis for sensorless control of Doubly-Fed Induction Generators (DFIGs). The reference and adjustable models of the suggested observer are based on the active power of the machine. A hysteresis block is used in the structure of the adaptation mechanism, and the stability analysis is performe...