The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Eid Juhabi - One of the best experts on this subject based on the ideXlab platform.
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oil price risk exposure the case of the u s travel and leisure industry
Energy Economics, 2014Co-Authors: Sunil K Mohanty, Mohan Singh Nandha, Essam Habis, Eid JuhabiAbstract:We investigate the oil price risk exposure of the U.S. Travel and Leisure industry. In this paper, we utilize the Fama–French–Carhart's (1997) four-factor asset pricing model augmented with oil price risk factor. The results of our study suggest that oil price sensitivities vary significantly across six Subsectors: airlines, gambling, hotels, recreational services, restaurants and bars, and travel & tourism. The extent of the exposure is generally negative, but it is particularly significant for a number of Subsectors including airlines, recreational services and restaurants and bars. We also document that oil price risk exposures vary considerably over time. In particular, the 2007–2009 recession triggered by the U.S. subprime lending crisis has significantly contributed to the oil price risk exposure of airline industry. These results should be of much interest to financial analysts, corporate executives, money managers, regulators, and policy makers.
Niels Framroze Moller - One of the best experts on this subject based on the ideXlab platform.
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energy demand substitution and environmental taxation an econometric analysis of eight Subsectors of the danish economy
Energy Economics, 2017Co-Authors: Niels Framroze MollerAbstract:This research contains an econometric analysis of energy demand in trade and industry which allows for substitution between electricity and other energy carriers when relative prices change. The presence of substitution suggests that taxation can be a means of changing the energy input mix in a more environmental-friendly direction. For eight Subsectors of the Danish economy, time series (1966–2011) are modeled by means of partial Cointegrated VARs. Long-run demand relations are identified for all Subsectors and robust price elasticities are supported in five cases. The results are used in a small impulse–response experiment which suggests a potential for taxation to induce substitution of electricity for fossil-based energy.
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energy demand substitution and a potential for electrification an econometric analysis of eight danish Subsectors
MPRA Paper, 2015Co-Authors: Niels Framroze MollerAbstract:This research contains an econometric analysis of energy demand in trade and industry which allows for substitution between electricity and other energy carriers when relative prices change. Long-run substitution towards electricity is a means of electrifying energy demand and therefore contributes to paving the way for a renewable-based energy sys-tem. For eight Subsectors of the Danish economy, time series (1966-2011) are modeled by means of partial Cointegrated VARs. Long-run demand relations are identified for all Subsectors and robust price elasticities are supported in five cases. The results are used in a small impulse-response experiment which suggests a potential for taxation to move energy consumption away from fossil-based fuels and towards electricity.
Sunil K Mohanty - One of the best experts on this subject based on the ideXlab platform.
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oil price risk exposure the case of the u s travel and leisure industry
Energy Economics, 2014Co-Authors: Sunil K Mohanty, Mohan Singh Nandha, Essam Habis, Eid JuhabiAbstract:We investigate the oil price risk exposure of the U.S. Travel and Leisure industry. In this paper, we utilize the Fama–French–Carhart's (1997) four-factor asset pricing model augmented with oil price risk factor. The results of our study suggest that oil price sensitivities vary significantly across six Subsectors: airlines, gambling, hotels, recreational services, restaurants and bars, and travel & tourism. The extent of the exposure is generally negative, but it is particularly significant for a number of Subsectors including airlines, recreational services and restaurants and bars. We also document that oil price risk exposures vary considerably over time. In particular, the 2007–2009 recession triggered by the U.S. subprime lending crisis has significantly contributed to the oil price risk exposure of airline industry. These results should be of much interest to financial analysts, corporate executives, money managers, regulators, and policy makers.
Omar De Jesús Montilla Galvis - One of the best experts on this subject based on the ideXlab platform.
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MODELO DE EVALUACIÓN DE GESTIÓN DE EMPRESAS INDUSTRIALES DEL SUBSECTOR DE EMPAQUES Y ENVASES PLÁSTICOS
Estudios Gerenciales, 2005Co-Authors: Omar De Jesús Montilla GalvisAbstract:El presente articulo muestra una propuesta de modelo de evaluacion de gestion aplicable a las empresas industriales del subsector de empaques y envases plasticos, producto de investigacion teorica y de campo, como avance del proyecto de investigacion titulado Modelos de evaluacion de gestion, que se realiza dentro del Grupo de Investigacion en Contabilidad, Finanzas y Gestion Publica. Este avance de investigacion corresponde al estudio efectuado en empresas del subsector, en el Valle del Cauca, subsector que fue seleccionado ya que representa mas del 52% de la produccion nacional.
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Modelo para evaluación de gestión de empresas industriales del subsector de cosméticos
Estudios Gerenciales, 2004Co-Authors: Omar De Jesús Montilla GalvisAbstract:El presente articulo muestra una propuesta de modelo de evaluacion de gestion aplicable a las empresas industriales del subsector de cosmeticos, producto de investigacion teorica y de campo, como avance del proyecto de investigacion titulado Modelos de evaluacion de gestion, que se realiza dentro del Grupo de Investigacion en Contabilidad, Finanzas y Gestion Publica. Este primer avance de investigacion corresponde al estudio realizado en empresas industriales del subsector de cosmeticos en el Valle del Cauca.
Zhiyong Zeng - One of the best experts on this subject based on the ideXlab platform.
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Line Current Ripple Minimization PWM Strategy With Reduced Zero-Sequence Circulating Current for Two Parallel Interleaved Three-Phase Converters
IEEE Transactions on Power Electronics, 2020Co-Authors: Zhiyong Zeng, Zhongxi Li, Stefan M. GoetzAbstract:This article proposes a line-current ripple minimization pulsewidth modulation strategy with reduced zero-sequence circulating current (ZSCC) for two parallel three-phase two-level converters. We split each 60° sector into six Subsectors, each applies the nearest three vectors to ensure minimal line-current ripple. To reduce the ZSCC, we further investigate all vector sequences of the nearest three vectors and derive an optimal vector sequence for each of the six Subsectors. We unify all carrier sequences under a carrier-based modulation scheme with the assistance of voltage injections. The injected voltage can be computed by a simple algorithm that allows easy implementation in mainstream microcontrollers. The experimental results validate that the proposed method maintains the minimal line-current ripple while significantly reducing the ZSCC compared to the existing line current ripple minimization methods.
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Optimal Discontinuous Space Vector PWM for Zero-Sequence-Circulating Current Reduction in two Paralleled Three-Phase Two-Level Converter
IEEE Transactions on Industrial Electronics, 1Co-Authors: Zhiyong Zeng, Zhongxi Li, Stefan GoetzAbstract:This paper proposes an optimal discontinuous pulse width mod-ulation (ODPWM) strategy to reduce the zero-sequence circu-lating current (ZSCC) for paralleled three-phase two-level con-verters. While existing methods generally entail a trade-off be-tween the ZSCC peak and the switching losses, this paper fully explores the redundancy in the vector sequences to further im-prove both objectives. First, we derive eight candidate vector sequences for 60° sectors, each sequence with minimal switching times and ZSCC changing rate. Second, we divide each 60° sector into 12 Subsectors, each is equipped with one of the eight candi-dates. The comparisons show that the proposed method maintains the same maximum ZSCC peak of existing best methods while using the minimal switching times, or effectively reducing the switching loss by up to 50%; the ZSCC of the proposed method is minimal across the major modulation regions, guaranteeing a smaller loss of the common mode (CM) inductor and further reducing the semiconductor losses. We implement the proposed optimal vector sequences in a carrier-based modulation scheme, the references of which depend on the subsector. Despite the complex geometry of the Subsectors, the decision procedure is simple. Finally, the experimental results confirm the effectiveness of the proposed ODPWM
