The Experts below are selected from a list of 5190 Experts worldwide ranked by ideXlab platform
Roger Hammersland - One of the best experts on this subject based on the ideXlab platform.
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Cointegration analysis in time series models with a small cross-Sectional Dimension. ∗†
2020Co-Authors: Roger HammerslandAbstract:This paper addresses cointegration in panel data models with a small cross-Sectional Dimension. In addition to dealing with cointegration within the cross-Sectional Dimension, the paper explicitly addresses the issue of cointegration across cross-sections. The approach is based upon a wellknown distributional result for the trace test when some of the cointegrating vectors are a priori known, and advocates a three-step procedure for the identification of the cointegrating space when dealing with two-Dimensional data. Identification of the long-run structures of Norwegian exports and international interest rates are used as examples.
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cointegration analysis in time series models with a small cross Sectional Dimension
2006Co-Authors: Roger HammerslandAbstract:This paper addresses cointegration in panel data models with a small cross-Sectional Dimension. In addition to dealing with cointegration within the cross-Sectional Dimension, the paper explicitly addresses the issue of cointegration across cross-sections. The approach is based upon a wellknown distributional result for the trace test when some of the cointegrating vectors are a priori known, and advocates a three-step procedure for the identification of the cointegrating space when dealing with two-Dimensional data. Identification of the long-run structures of Norwegian exports and international interest rates are used as examples.
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large t and small n a three step approach to the identification of cointegrating relationships in time series models with a small cross Sectional Dimension
66, 2004Co-Authors: Roger HammerslandAbstract:This paper addresses cointegration in small cross-Sectional panel data models. In addition to dealing with cointegrating relationships within the cross-Sectional Dimension, the paper explicitly addresses the issue of cointegration between cross-sections. The approach is based upon a well-known distributional result for the trace test when some of the cointegrating vectors are a priori known, and advocates a three-step procedure for the identification of the cointegrating space when dealing with two-Dimensional data. The first step of this procedure utilizes traditional techniques to identify the long-run relationships within each cross-Sectional unit separately. In the second step these first step relationships are then treated as known when searching for potential long run relationships between units in a joint analysis comprising the whole cross-Sectional Dimension. The third step of the procedure then finally reestimate all free parameters of the identified long-run structure to get rid of a potential simultaneity bias as a result of a non-diagonal covariance matrix. Identification of the long-run structures of Norwegian exports and international interest rate relationships are used as examples. Norwegian mainland exports have here been divided into two cross-Sectional units; the traditional goods sector and the service sector. While in the study of international interest rate relationships the two sectors investigated are Germany and the US. The examples are used to address the more general issues of the degree of independence in capital markets and in goods markets of small open economies.
Jinjun Feng - One of the best experts on this subject based on the ideXlab platform.
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Design of a Sheet Beam Electron Gun for 850GHz Staggered Double Vane Traveling Wave Tube
2019 International Vacuum Electronics Conference (IVEC), 2019Co-Authors: Wei Shao, Hanwen Tian, Zhanliang Wang, Zhigang Lu, Huarong Gong, Tao Tang, Zhaoyun Duan, Yubin Gong, Jinjun FengAbstract:A sheet beam electron gun for 850GHz staggered double vane TWT is designed in this paper. The designed beam achieves a beam current of 20mA, beam voltage of 28.1kV and cross-Sectional Dimension of $\pmb{0.12}\mathbf{mm}\pmb{\times 0.03}\mathbf{mm}$ . And the beam transmission efficiency with a designed uniform permanent magnetic field is achieved with 95.7%. Finally the beam-wave interaction with above parameters is calculated and the output power is obtained with 33.8mW.
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Design of a Sheet Beam Electron Gun for 850GHz Staggered Double Vane Traveling Wave Tube
2019 International Vacuum Electronics Conference (IVEC), 2019Co-Authors: Wei Shao, Hanwen Tian, Zhanliang Wang, Zhigang Lu, Huarong Gong, Tao Tang, Zhaoyun Duan, Yubin Gong, Jinjun FengAbstract:A sheet beam electron gun for 850GHz staggered double vane TWT is designed in this paper. The designed beam achieves a beam current of 20mA, beam voltage of 28.1kV and cross-Sectional Dimension of 0.12mm×0.03mm. And the beam transmission efficiency with a designed uniform permanent magnetic field is achieved with 95.7%. Finally the beam-wave interaction with above parameters is calculated and the output power is obtained with 33.8mW.
Rasim Temur - One of the best experts on this subject based on the ideXlab platform.
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investigation of cross Sectional Dimension on optimum carbon fiber reinforced polymer design for shear capacity increase of reinforced concrete beams
International Journal of Theoretical and Applied Mechanics, 2018Co-Authors: Aylin Ece Kayabekir, Gebrail Bekdas, Sinan Melih Nigdeli, Rasim TemurAbstract:In retrofit of reinforced concrete (RC) structures, the use of carbon fiber reinforced polymers (FRP) is an alternative way which is easily applied without destruction. In this study, the cross-section Dimensions of beams are investigated for optimum parameters of CFRP such as spacing of CFRP, width of CFRP and angle of CFRP. The different combinations of cross-section Dimension such as breadth (bw), height (h) and thickness of flange of T-shaped cross-sections (hf). The rules of ACI-318: Building code requirements for structural concrete was used in development of the total area of CFRP which is the objective function and penalized with three design constraints. The optimization method using Jaya Algorithm was used in the investigation. According to the results, the rise of bw increases the required CFRP area, but in the cases with big additional shear force, it provides a design without violation of design constraints. The increase of h has always a reduction of required areas.
Wei Shao - One of the best experts on this subject based on the ideXlab platform.
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Design of a Sheet Beam Electron Gun for 850GHz Staggered Double Vane Traveling Wave Tube
2019 International Vacuum Electronics Conference (IVEC), 2019Co-Authors: Wei Shao, Hanwen Tian, Zhanliang Wang, Zhigang Lu, Huarong Gong, Tao Tang, Zhaoyun Duan, Yubin Gong, Jinjun FengAbstract:A sheet beam electron gun for 850GHz staggered double vane TWT is designed in this paper. The designed beam achieves a beam current of 20mA, beam voltage of 28.1kV and cross-Sectional Dimension of $\pmb{0.12}\mathbf{mm}\pmb{\times 0.03}\mathbf{mm}$ . And the beam transmission efficiency with a designed uniform permanent magnetic field is achieved with 95.7%. Finally the beam-wave interaction with above parameters is calculated and the output power is obtained with 33.8mW.
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Design of a Sheet Beam Electron Gun for 850GHz Staggered Double Vane Traveling Wave Tube
2019 International Vacuum Electronics Conference (IVEC), 2019Co-Authors: Wei Shao, Hanwen Tian, Zhanliang Wang, Zhigang Lu, Huarong Gong, Tao Tang, Zhaoyun Duan, Yubin Gong, Jinjun FengAbstract:A sheet beam electron gun for 850GHz staggered double vane TWT is designed in this paper. The designed beam achieves a beam current of 20mA, beam voltage of 28.1kV and cross-Sectional Dimension of 0.12mm×0.03mm. And the beam transmission efficiency with a designed uniform permanent magnetic field is achieved with 95.7%. Finally the beam-wave interaction with above parameters is calculated and the output power is obtained with 33.8mW.
Cong Xiao Wu - One of the best experts on this subject based on the ideXlab platform.
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Study on Mechanical Behavior of the Key Components of High-Level Transfer Frame-Shear Wall Structure with Steel-Lead Viscoelastic Dampers
Advanced Materials Research, 2020Co-Authors: Ling Yi, Cong Xiao WuAbstract:Based on the limited demand of transfer beam Sectional Dimension of tall building structure with transfer story in Technical Specification for Concrete Structures of Tall Building, a high-level transfer frame-shear structure with steel-lead viscoelastic dampers is presented for simulating the mechanical behavior of the key components effect with consideration the transfer beam depth with 1/6, 1/8 and 1/10 calculation span. The analysis results indicate that the internal force of the transfer beam, frame-support column of transfer story, shear wall above transfer level and base shear wall is obviously reduced, with the reduction of the transfer beam depth. Comparison with the high-level transfer frame-shear structure, the internal force of the key components of the high-level transfer frame-shear structure with the steel-lead viscoelastic dampers also is reduced. Therefore, the limited demand of the transfer beam Sectional Dimension and the construction measure of the shear wall could be properly reduced in the high-level transfer frame-shear structure with the steel-lead viscoelastic dampers.
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Study on Mechanical Behavior of the Key Components of High-Level Transfer Frame-Shear Wall Structure with Viscous Dampers
Advanced Materials Research, 2010Co-Authors: Cong Xiao Wu, Yun Zhou, Xue Song Deng, Cong Yong WuAbstract:Based on the limited demand of transfer beam Sectional Dimension of tall building structure with transfer story in Technical Specification for Concrete Structures of Tall Building, a high-level transfer frame-shear structure with viscous dampers is presented for simulating the mechanical behavior of the key components effect with consideration the transfer beam depth with 1/6, 1/8 and 1/10 calculation span. The analysis results indicate that the internal force of the transfer beam, frame-support column of transfer story, shear wall above transfer level and base shear wall is obviously reduced, with the reduction of the transfer beam depth. Comparison with the high-level transfer frame-shear structure, the internal force of the key components of the high-level transfer frame-shear structure with viscous dampers also is reduced. Therefore, the limited demand of the transfer beam Sectional Dimension and the construction measure of the shear wall could be properly reduced in the high-level transfer frame-shear structure with viscous dampers.
