4,614 research outputs found

    Forecasting Inflation in China

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    This paper forecasts inflation in China over a 12-month horizon. The analysis runs 15 alternative models and finds that only those considering many predictors via a principal component display a better relative forecasting performance than the univariate benchmark.inflation forecasting; data-rich environment; principal components; China

    Towards building a team of intelligent robots

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    Topics addressed include: collision-free motion planning of multiple robot arms; two-dimensional object recognition; and pictorial databases (storage and sharing of the representations of three-dimensional objects)

    Collision-free motion of two robot arms in a common workspace

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    Collision-free motion of two robot arms in a common workspace is investigated. A collision-free motion is obtained by detecting collisions along the preplanned trajectories using a sphere model for the wrist of each robot and then modifying the paths and/or trajectories of one or both robots to avoid the collision. Detecting and avoiding collisions are based on the premise that: preplanned trajectories of the robots follow a straight line; collisions are restricted to between the wrists of the two robots (which corresponds to the upper three links of PUMA manipulators); and collisions never occur between the beginning points or end points on the straight line paths. The collision detection algorithm is described and some approaches to collision avoidance are discussed

    China’s monetary policy and the exchange rate

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    The paper models monetary policy in China using a hybrid McCallum-Taylor empirical reaction function. The feedback rule allows for reactions to inflation and output gaps, and to developments in a trade-weighted exchange rate gap measure. The investigation finds that monetary policy in China has, on average, accommodated inflationary developments. But exchange rate shocks do not significantly affect monetary policy behavior, and there is no evidence of a structural break in the estimated reaction function at the end of the strict dollar peg in July 2005. The paper also runs an exercise incorporating survey-based inflation expectations into the policy reaction function and meets with some success.exchange rate; hybrid McCallum-Taylor monetary policy reaction function; SVAR; survey-based inflation expectations; China

    Nuclear structure study around Z=28

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    Yrast levels of Ni, Cu and Zn isotopes for 40N5040 \leq N \leq50 have been described by state-of-the-art shell model calculations with three recently available interactions using 56^{56}Ni as a core in the f5/2pg9/2f_{5/2}pg_{9/2} model space. The results are unsatisfactory viz. large E(2+)E(2^+) for very neutron rich nuclei, small B(E2) values in comparison to experimental values. These results indicate an importance of inclusion of πf7/2\pi f_{7/2} and νd5/2\nu d_{5/2} orbitals in the model space to reproduce collectivity in this region.Comment: 12 pages, 14 figure

    PrefMiner: Mining User's Preferences for Intelligent Mobile Notification Management

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    Report of the AHG on MPEG-7 Semantic Information Representation

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    This AHG has been created at the last MPEG meeting in Maui to work in parallel with the CE experiment on the Semantic DS, so as to continue the refinement, both in terms of significance, usage and syntax of the DS’s that have been proposed during the Maui meeting [2] . Following the discussions on the email reflector, the results of a meeting of the US delegation in February and of the discussion during the AHG meeting Mar. 19th, 2000, in Noordwijkerhout, some clarifications were made, though a total convergence has not yet been reached. During the US delagate meeting, an alternative syntax had also been proposed for consideration of the continuation of the CE; it is likely that this will lead to the formulation of competitive solutions to select the best syntax and elementary components of the Semantic DS during the CE process to follow after the 51st MPEG meeting. Below, some listings of the discussions that took place, in reference to the individual mandates of this AHG

    MyTraces: Investigating Correlation and Causation between Users' Emotional States and Mobile Phone Interaction

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    Most of the existing work concerning the analysis of emotional states and mobile phone interaction has been based on correlation analysis. In this paper, for the first time, we carry out a causality study to investigate the causal links between users’ emotional states and their interaction with mobile phones, which could provide valuable information to practitioners and researchers. The analysis is based on a dataset collected in-the-wild. We recorded 5,118 mood reports from 28 users over a period of 20 days. Our results show that users’ emotions have a causal impact on different aspects of mobile phone interaction. On the other hand, we can observe a causal impact of the use of specific applications, reflecting the external users’ context, such as socializing and traveling, on happiness and stress level. This study has profound implications for the design of interactive mobile systems since it identifies the dimensions that have causal effects on users’ interaction with mobile phones and vice versa. These findings might lead to the design of more effective computing systems and services that rely on the analysis of the emotional state of users, for example for marketing and digital health applications

    The FEM-2 design method

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    The FEM-2 parallel computer is designed using methods differing from those ordinarily employed in parallel computer design. The major distinguishing aspects are: (1) a top-down rather than bottom-up design process; (2) the design considers the entire system structure in terms of layers of virtual machines; and (3) each layer of virtual machine is defined formally during the design process. The result is a complete hardware/software system design. The basic design method is discussed and the advantages of the method are considered. A status report on the FEM-2 design is included

    Interface Trap Density Metrology of state-of-the-art undoped Si n-FinFETs

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    The presence of interface states at the MOS interface is a well-known cause of device degradation. This is particularly true for ultra-scaled FinFET geometries where the presence of a few traps can strongly influence device behavior. Typical methods for interface trap density (Dit) measurements are not performed on ultimate devices, but on custom designed structures. We present the first set of methods that allow direct estimation of Dit in state-of-the-art FinFETs, addressing a critical industry need.Comment: 9 pages, 4 figures, *G.C.T. and A.P. contributed equally to this wor
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