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Miguel, Leandro Fleck Fadel,Miguel, Leticia Fleck Fadel,Riera, Jorge Daniel,Menezes, Ruy Carlos Ramos De Techno-Press 2007 Structural Engineering and Mechanics, An Int'l Jou Vol.27 No.5
The damage detection process may appear difficult to be implemented for truss structures because not all degrees of freedom in the numerical model can be experimentally measured. In this context, the damage locating vector (DLV) method, introduced by Bernal (2002), is a useful approach because it is effective when operating with an arbitrary number of sensors, a truncated modal basis and multiple damage scenarios, while keeping the calculation in a low level. In addition, the present paper also evaluates the noise influence on the accuracy of the DLV method. In order to verify the DLV behavior under different damages intensities and, mainly, in presence of measurement noise, a parametric study had been carried out. Different excitations as well as damage scenarios are numerically tested in a continuous Warren truss structure subjected to five noise levels with a set of limited measurement sensors. Besides this, it is proposed another way to determine the damage locating vectors in the DLV procedure. The idea is to contribute with an alternative option to solve the problem with a more widespread algebraic method. The original formulation via singular value decomposition (SVD) is replaced by a common solution of an eigenvector-eigenvalue problem. The final results show that the DLV method, enhanced with the alternative solution proposed in this paper, was able to correctly locate the damaged bars, using an output-only system identification procedure, even considering small intensities of damage and moderate noise levels.
CISG and Arbitration Agreements: A Janus-Faced Practice and How to Cope with It
Flecke-Giammarco, Gustav,Grimm, Alexander The Korean Association of Arbitration Studies 2015 중재연구 Vol.25 No.3
Arbitration clauses or institutional arbitration rules rarely, if ever, specify the law applicable to the arbitration agreement. A wide range of laws may thus govern this question, such as the law at the place of arbitration, the law where the agreement or the award is enforced or the law of the main contract between the parties. It is also conceivable that international uniform law or soft law may play a role. Tribunals and courts seized with this question must consequently decide which of these various laws shall apply to verify the existence and validity of the arbitration agreement. This paper picks up on this controversially debated conflict of laws issue. At times, this debate is characterized by a strong divide between arbitration and international trade law practitioners. But are the different approaches really leading to diverging results in arbitral practice?
The ICC Scrutiny Process and Enhanced Enforceability of Arbitral Awards
Flecke-Giammarco, Gustav The Korean Association of Arbitration Studies 2014 중재연구 Vol.24 No.3
Ever since its introduction in the 1927 ICC Arbitration Rules, scrutiny of awards by the ICC Court has been a cornerstone feature of ICC arbitration. Most players involved in the arbitral process are likely to concede that a certain level of review of arbitral awards is both desirable and beneficial. Indeed, proponents among the users are frequently influenced in their choice of the ICC as the administering arbitral institution, based on their strong conviction that time and money invested in the resolution of a dispute is ultimately only well spent if awards are voluntarily complied with or at least less susceptible to be set aside. By providing a look behind the scenes of the scrutiny process, the article does away with tales of excessive intervention on behalf of the arbitral institution when reviewing and approving awards and demystifies the role played by the ICC Court throughout its close interaction with arbitral tribunals operating under the ICC Rules. The article further argues that the scrutiny process can be a highly efficient tool that helps to increase the quality and enforceability of awards rendered under the aegis of the ICC.
Letícia Fleck Fadel Miguel,Otávio Augusto Peter de Souza 국제구조공학회 2023 Structural Engineering and Mechanics, An Int'l Jou Vol.86 No.5
It is recognized that the installation of energy dissipation devices, such as the tuned mass damper (TMD), decreases the dynamic response of structures, however, the best parameters of each device persist hard to determine. Unlike many works that perform only a deterministic optimization, this work proposes a complete methodology to minimize the dynamic response of footbridges by optimizing the parameters of multiple tuned mass dampers (MTMD) taking into account uncertainties present in the parameters of the structure and also of the human excitation. For application purposes, a steel footbridge, based on a real structure, is studied. Three different scenarios for the MTMD are simulated. The proposed robust optimization problem is solved via the Circle-Inspired Optimization Algorithm (CIOA), a novel and efficient metaheuristic algorithm recently developed by the authors. The objective function is to minimize the mean maximum vertical displacement of the footbridge, whereas the design variables are the stiffness and damping constants of the MTMD. The results showed the excellent capacity of the proposed methodology, reducing the mean maximum vertical displacement by more than 36% and in a computational time about 9% less than using a classical genetic algorithm. The results obtained by the proposed methodology are also compared with results obtained through traditional TMD design methods, showing again the best performance of the proposed optimization method. Finally, an analysis of the maximum vertical acceleration showed a reduction of more than 91% for the three scenarios, leading the footbridge to acceleration values below the recommended comfort limits. Hence, the proposed methodology could be employed to optimize MTMD, improving the design of footbridges.
The ICC Scrutiny Process and Enhanced Enforceability of Arbitral Awards
Gustav Flecke-Giammarco 한국중재학회 2014 중재연구 Vol.24 No.3
Ever since its introduction in the 1927 ICC Arbitration Rules, scrutiny of awards by the ICC Court has been a cornerstone feature of ICC arbitration. Most players involved in the arbitral process are likely to concede that a certain level of review of arbitral awards is both desirable and beneficial. Indeed, proponents among the users are frequently influenced in their choice of the ICC as the administering arbitral institution, based on their strong conviction that time and money invested in the resolution of a dispute is ultimately only well spent if awards are voluntarily complied with or at least less susceptible to be set aside. By providing a look behind the scenes of the scrutiny process, the article does away with tales of excessive intervention on behalf of the arbitral institution when reviewing and approving awards and demystifies the role played by the ICC Court throughout its close interaction with arbitral tribunals operating under the ICC Rules. The article further argues that the scrutiny process can be a highly efficient tool that helps to increase the quality and enforceability of awards rendered under the aegis of the ICC
CISG and Arbitration Agreements: A Janus-Faced Practice and How to Cope with It
Gustav Flecke-Giammarco,Alexander Grimm 한국중재학회 2015 중재연구 Vol.25 No.3
Arbitration clauses or institutional arbitration rules rarely, if ever, specify the law applicable to the arbitration agreement. A wide range of laws may thus govern this question, such as the law at the place of arbitration, the law where the agreement or the award is enforced or the law of the main contract between the parties. It is also conceivable that international uniform law or soft law may play a role. Tribunals and courts seized with this question must consequently decide which of these various laws shall apply to verify the existence and validity of the arbitration agreement. This paper picks up on this controversially debated conflict of laws issue. At times, this debate is characterized by a strong divide between arbitration and international trade law practitioners. But are the different approaches really leading to diverging results in arbitral practice?