Search results for "Luck"
showing 10 items of 34 documents
Why have I failed? Why have I passed? A comparison of students’ causal attributions in second language acquisition (A1–B2 levels)
2019
Background Previous literature highlights the importance of causal attributions in achievement and motivation. However, the studies about causal attributions in second language acquisition (SLA) are limited and scarce. Aims This study was designed to determine the frequency of successful and unsuccessful activities per English level and to compare the causal attributions (explanations of outcomes) on successful and failure authentic tasks undertaken in the context of learning English as a foreign language (EFL) acquisition in an Official School of Languages (OSL). Sample To this aim, 407 native Spanish students from levels A1 (n = 111), A2 (n = 113), B1 (n = 98), and B2 (n = 85) in OSL part…
When Competition Is Pushed Too Hard. An Agent-Based Model Of Strategic Behaviour Of Referees In Peer Review
2013
This paper examines the impact of strategic behaviour of referees on the quality and efficiency of peer review. We modelled peer review as a process based on knowledge asymmetry and subject to evaluation bias. We built two simulation scenarios to investigate largescale implications of referee behaviour and judgment bias. The first one was inspired by “the luck of the reviewer draw” idea. In this case, we assumed that referees randomly fell into Type I and Type II errors, i.e., recommending submissions of low quality to be published or recommending against the publishing of submissions which should have been published. In the second scenario, we assumed that certain referees tried intentiona…
Geochemical provenance analyses of Roman lava millstones north of the Alps: a study of their distribution and implications for the beginning of Roman…
2011
Abstract In Roman times, rotary querns and different types of millstones, driven either by horse-capstan or water power, were produced in the lava quarries of the quaternary volcanic Eifel region and exported to many parts of the Empire. The geographic distribution of Roman lava millstones from the Eifel region provides important information about trade patterns and, in cases of well dated millstones, also allows an estimate as to when the Roman lava quarrying in the Eifel region began. Sixty-two millstones from Germany, France and Austria were sampled and analyzed for major and trace elements by X-ray fluorescence. To determine their provenance, the millstone data was evaluated by a combin…
Line reconstruction using prior knowledge in single non-central view
2016
International audience; Line projections in non-central systems contain more geometric information than in central systems. The four degrees of freedom of the 3D line are mapped to the line-image and the 3D line can be theoretically recovered from 4 projecting rays (i.e. line-image points) from a single non-central view. In practice, extraction of line-images is consid- erably more difficult and the resulting reconstruction is imprecise and sensitive to noise. In this paper we present a minimal solution to recover the geometry of the 3D line from only three line-image points when the line is parallel to a given plane. A second minimal solution allows to recover the 3D line from two points w…
Production and Foreign Trade of Mineral Products in Latvia and Belarus
2015
Latvia and Belarus are small countries with limited scope of natural resources. However, the available mineral resources play important role in production of mineral products for domestic and foreign consumption. Main goal of the paper is to characterize the role of extraction industry in national economy and mineral products trade in two neighboring countries - Latvia and Belarus. To achieve the goal, the role of mining and quarrying industry in Latvia and Belarus was identified; trade of mineral resources in Latvia was analyzed. The main trends in the development of its own mineral resources of the Republic of Belarus were identified, the role of mineral resources in the commodity structu…
Testing Profitability of Technical Trading Rules
2017
Technical traders typically rely on back-testing which is defined as the process of testing a trading strategy using relevant historical data. Back-testing usually involves “data mining” which denotes the practice of finding a profitable trading strategy by extensive search through a vast number of alternative strategies. This chapter explains that the data-mining procedure tends to find a strategy which performance benefited most from luck. As a result, the performance of the best strategy in a back test is upward biased. This fact motivates that any back-test must be combined with a data-mining correction procedure that adjusts downward the estimated performance. Another straightforward m…
Alternative Financing of SMEs in the Baltic States: Myth or Reality?
2014
Abstract Alternative financing for small business can help companies whose owners can’t get traditional financing resources as small business loans, overdrafts and personal credit cards. New companies typically seek alternative financing when their companies have not been in business long enough to establish credit profiles with financial institutions. Access to alternative financing together with traditional financial resources represents one of the most significant challenges for new SMEs not only in the Baltic States but all over the world. Ensurance of new SMEs creation, existence and growth asks understanding of SMEs’ financing needs and alternative funding is one of them. Alternative …
Galateo e i suoi lettori
2019
L' articolo si concentra sulla fortuna delle opere di Antonio Galateo tra i lettori di tutti i tempi This article focuses on the fortune of Antonio Galateo's works among readers of all time
Two-dimensional numerical modeling of fracturing and shear band development in glacier fronts
2014
In this contribution we present a two-dimensional numerical model of a deforming glacier front. The model is based on a hybrid lattice spring network approach where particles in the model can deform in a volume conservative visco-elastic manner but at the same time they can be compressed elastically and fracture by discrete failure. We restrict ourselves to a simple setting where the glacier sits on a frictionless slope that dips with 5–10°, the ice block is fixed on one side and has a free surface on the other. The glacier varies in viscosity and can flow at the base, whereas it is brittle at the top. Results show that the head of the glacier is unstable. Failure happens as a combination o…
Exchange Rate and Macroeconomic Fluctuations as Sources of Luck in CEO Compensation
2011
Exchange rate and other macroeconomic fluctuations can be considered sources of good or bad “luck” for corporate performance. Incentive effects of performance-based compensation for management may be weakened or biased by macroeconomic influences on remuneration depending on the ability of management to adjust operations. We decompose the changes in CEO-compensation to distinguish between (anticipated-and unanticipated) macroeconomic and “intrinsic” sources. Total US CEO-compensation is measured both including options awarded and options exercised. Both depend strongly on variations in macro-factors but the time patterns differ. Allowing for asymmetric effects on compensation we find that c…