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ction in three dimensional virtual environments is lt, often resulting in physical or mental fatigue. c interfaces have previously been employed with nd 2.5D desktop metaphors in order to improve ing performance. This paper extends the principle D environment targeting task. Subjects completed eting task with and without haptic feedback, in the of “virtual(More)
BIS Working Papers are written by members of the Monetary and Economic Department of the Bank for International Settlements, and from time to time by other economists, and are published by the Bank. The views expressed in them are those of their authors and not necessarily the views of the BIS. Brief excerpts may be reproduced or translated provided the(More)
  • Ceyhun Bora Durdu, Boragan Aruoba, +12 authors Mark Wright
  • 2006
This paper analyzes the macroeconomic implications of real-indexed bonds, indexed to the terms of trade or GDP, using a general equilibrium model of a small open economy with financial frictions. Although indexed bonds provide a hedge to income fluctuations and can thereby mitigate the effects of financial frictions, they introduce interest rate(More)
In this paper, we propose a new approach to the map building task: the implementation of the Spatial Semantic Hierarchy (SSH), proposed by B. Kuipers, on a real robot fitted with an omnidirectional camera. The original Kuiper’s formulation of the SSH was slightly modified, in order to manage in a more efficient way the knowledge the real robot collects(More)
For much of the post-war period, Australia’s economy was relatively insulated from international trade. In part, insulation reflected the costs arising from distance. However, the high levels of assistance provided to import-competing manufacturing during, and after World War II, also played an important role. Taken as a share of GDP, gross trade declined(More)
The early manifestations of coccidioidomycosis (valley fever) are similar to those of other causes of community-acquired pneumonia (CAP). Without specific etiologic testing, the true frequency of valley fever may be underestimated by public health statistics. Therefore, we conducted a prospective observational study of adults with recent onset of a lower(More)
Identification of pathogenic bacteria in ascites correlates with poor clinical outcomes. Ascites samples are commonly reported culture-negative, even where frank infection is indicated. Culture-independent methods have previously reported bacterial DNA in ascites, however, whether this represents viable bacterial populations has not been determined. We(More)
This paper reports the new steps undertaken in our work aimed to demonstrate the effectiveness of an omnidirectional vision sensor when conjugated with the Spatial Semantic Hierarchy. The Spatial Semantic Hierarchy was proposed by Benjamin Kuipers as a method for map building with robots. In our work, a robot builds a topological map of an unknown(More)
The development and validation of multi-axial creep damage constitutive equations for A369 FP91 steel at 625°C was presented. Three aspects of research work were reported: 1) the development of a new set of creep damage constitutive equations based on Xu's formulation [1], 2) the validation on this newly developed and an existing KRH type of(More)