Theoretical Work

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Eric Maskin - One of the best experts on this subject based on the ideXlab platform.

  • recent Theoretical Work on the soft budget constraint
    The American Economic Review, 1999
    Co-Authors: Eric Maskin
    Abstract:

    The soft budget constraint syndrome, first identified and studied by Janos Kornai, arises when a seemingly unprofitable enterprise is bailed out by the government or the enterprise's creditors. In other words, the enterprise is not held to a fixed budget, but finds its budget constraint "softened" by the infusion of additional credit when it is on the verge of failure. In this paper I examine some recent Theoretical analyses of this phenomenon.

  • recent Theoretical Work on the soft budget constraint
    The American Economic Review, 1999
    Co-Authors: Eric Maskin
    Abstract:

    The soft budget constraint is a syndrome that was identified and studied by Janos Kornai in his analysis of centrally planned economies ( see, Kornai, 1980 ) . The syndrome is said to arise when a seemingly unprofitable enterprise is bailed out by the government or the enterprise’s creditors. In other words, the enterprise is not held to a fixed budget, but finds its budget constraint ‘‘softened’’ by the infusion of additional credit when it is on the verge of failure. Kornai viewed the soft budget constraint as a crucial ingredient for explaining the salient features of socialist economic performance, in particular, the pervasiveness of shortages. One interesting puzzle is why centrally planned economies have been particularly susceptible to the influence of the soft budget constraint; the capitalist world is hardly immune, as the recent financial crisis in Asia attests, but on the whole it has proved less vulnerable. Indeed, the very origin of the soft budget constraint and the mechanism by which it gives rise to shortages and other undesirable effects are also obviously important questions. Although Kornai’s Work has long been well known and appreciated, answers to these associated Theoretical questions have been hazarded only recently. In Maskin ( 1996 ) , I surveyed some of the initial efforts in this direction, including Mathias Dewatripont and Maskin (1995), which argues that centralization of credit can give rise to soft budget constraints because it facilitates the refinancing of

P Limaovieira - One of the best experts on this subject based on the ideXlab platform.

  • electron transfer induced decomposition in potassium nitroimidazoles collisions an experimental and Theoretical Work
    International Journal of Molecular Sciences, 2019
    Co-Authors: M Mendes, Gustavo Garcia, M C Bacchusmontabonel, P Limaovieira
    Abstract:

    Electron transfer induced decomposition mechanism of nitroimidazole and a selection of analogue molecules in collisions with neutral potassium (K) atoms from 10 to 1000 eV have been thoroughly investigated. In this laboratory collision regime, the formation of negative ions was time-of-flight mass analyzed and the fragmentation patterns and branching ratios have been obtained. The most abundant anions have been assigned to the parent molecule and the nitrogen oxide anion (NO2–) and the electron transfer mechanisms are comprehensively discussed. This Work focuses on the analysis of all fragment anions produced and it is complementary of our recent Work on selective hydrogen loss from the transient negative ions produced in these collisions. Ab initio Theoretical calculations were performed for 4-nitroimidazole (4NI), 2-nitroimidazole (2NI), 1-methyl-4- (Me4NI) and 1-methyl-5-nitroimidazole (Me5NI), and imidazole (IMI) in the presence of a potassium atom and provided a strong basis for the assignment of the lowest unoccupied molecular orbitals accessed in the collision process.

Septimiu E Salcudean - One of the best experts on this subject based on the ideXlab platform.

  • transparency in time delayed systems and the effect of local force feedback for transparent teleoperation
    International Conference on Robotics and Automation, 2002
    Co-Authors: Keyvan Hashtrudizaad, Septimiu E Salcudean
    Abstract:

    This paper first investigates the issue of transparency in time-delayed teleoperation. It then studies the advantages of employing local force feedback for enhanced stability and performance. In addition, two classes of three-channel control architectures, that are perfectly transparent under ideal conditions are introduced. The stability robustness of the proposed architectures to delays is rigorously analyzed, leading to certain bounds on force feedforward control parameters. Experimental results are included in support of the Theoretical Work.

  • on the use of local force feedback for transparent teleoperation
    International Conference on Robotics and Automation, 1999
    Co-Authors: K Hastrudizaad, Septimiu E Salcudean
    Abstract:

    This paper studies the advantages of employing local force feedback for enhanced stability and performance in teleoperation systems. It also shows how a class of three-channel architecture bilateral controllers can provide perfect transparency under ideal conditions. Furthermore, the robustness of the proposed architecture to the communication channel time-delays is analytically investigated. Experimental results are also included to support the Theoretical Work.

M Mendes - One of the best experts on this subject based on the ideXlab platform.

  • electron transfer induced decomposition in potassium nitroimidazoles collisions an experimental and Theoretical Work
    International Journal of Molecular Sciences, 2019
    Co-Authors: M Mendes, Gustavo Garcia, M C Bacchusmontabonel, P Limaovieira
    Abstract:

    Electron transfer induced decomposition mechanism of nitroimidazole and a selection of analogue molecules in collisions with neutral potassium (K) atoms from 10 to 1000 eV have been thoroughly investigated. In this laboratory collision regime, the formation of negative ions was time-of-flight mass analyzed and the fragmentation patterns and branching ratios have been obtained. The most abundant anions have been assigned to the parent molecule and the nitrogen oxide anion (NO2–) and the electron transfer mechanisms are comprehensively discussed. This Work focuses on the analysis of all fragment anions produced and it is complementary of our recent Work on selective hydrogen loss from the transient negative ions produced in these collisions. Ab initio Theoretical calculations were performed for 4-nitroimidazole (4NI), 2-nitroimidazole (2NI), 1-methyl-4- (Me4NI) and 1-methyl-5-nitroimidazole (Me5NI), and imidazole (IMI) in the presence of a potassium atom and provided a strong basis for the assignment of the lowest unoccupied molecular orbitals accessed in the collision process.

Shuhei M Yoshida - One of the best experts on this subject based on the ideXlab platform.

  • universality of an impurity in a bose einstein condensate
    Physical Review X, 2018
    Co-Authors: Shuhei M Yoshida, Shimpei Endo, Jesper Levinsen, Meera M Parish
    Abstract:

    The concept of universality allows physicists to construct descriptions of systems that are independent of the precise underlying details. New Theoretical Work extends this to systems composed of bosonic particles, finding that in at least one case there are universal features that are model independent.