作者机构：
[Zhang, Shoushou] Cent South Univ Forestry & Technol, Bangor Coll, Changsha 410018, Hunan, Peoples R China.;[Guo, Siyuan] State Grid Hunan Elect Power Co Ltd Res Inst, Power Syst Technol Ctr, Changsha 410007, Hunan, Peoples R China.
会议名称：
IEEE International Magnetics Conference (INTERMAG)
会议时间：
APR 23-27, 2018
会议地点：
Singapore, SINGAPORE
会议主办单位：
[Zhang, Shoushou] Cent South Univ Forestry & Technol, Bangor Coll, Changsha 410018, Hunan, Peoples R China.^[Guo, Siyuan] State Grid Hunan Elect Power Co Ltd Res Inst, Power Syst Technol Ctr, Changsha 410007, Hunan, Peoples R China.
摘要：
The subdomain model for analytical calculation of magnetic field is widely developed to predict electromagnetic performance in permanent magnet ( PM) machines. Based on the principle of the mutual flux through the stator windings due to step-skewed PMs identical to that from equivalent non-skewed PMs, a 2D subdomain model of surface-mounted PM machines accounting for step-skewed magnets is proposed. By resolving the analytical expressions of the equivalent PMs subdomain, the 3D problem of step-skewed magnets along axis is simplified to a 2D problem, which saves the computational resources and improves the efficiency. The 2D multislice finite-element analysis confirms accuracy of the analytical method.
期刊：
2018 21ST INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS),2018年:2697-2701
通讯作者：
Zhang, Shoushou
作者机构：
[Zhang, Shoushou] Cent South Univ Forestry & Technol, Bangor Coll, Changsha, Hunan, Peoples R China.;[Guo, Siyuan] State Grid Hunan Elect Power Co Ltd Res Inst, Power Syst Technol Ctr, Changsha, Hunan, Peoples R China.
通讯机构：
[Zhang, Shoushou] C;Cent South Univ Forestry & Technol, Bangor Coll, Changsha, Hunan, Peoples R China.
会议名称：
21st International Conference on Electrical Machines and Systems (ICEMS)
会议时间：
OCT 07-10, 2018
会议地点：
Jeju, SOUTH KOREA
会议主办单位：
[Zhang, Shoushou] Cent South Univ Forestry & Technol, Bangor Coll, Changsha, Hunan, Peoples R China.^[Guo, Siyuan] State Grid Hunan Elect Power Co Ltd Res Inst, Power Syst Technol Ctr, Changsha, Hunan, Peoples R China.
会议论文集名称：
International Conference on Electrical Machines and Systems ICEMS
摘要：
The subdomain technique has been widely used to predict electromagnetic performance in permanent-magnet (PM) machines. Due to the high accuracy of magnetic field distribution prediction by subdomain technique, a simple method for electromagnetic performance calculation in surface-mounted PM machines with skewing is proposed. By taking the machine with step-skewed magnets as a combination of multi-machines operating with different rotor positions at the same instant, the influence of the axial magnet segments can be considered in 2D subdomain model of surface-mounted PM machines. Based on the magnetic field analytical solution, the cogging torque, back-EMF and electromagnetic torque is calculated, and the 2D multislice finite-element analysis confirms accuracy of the analytical method.
摘要：
Recent volatility in food prices in the grain market has generated much interest among agricultural market participants. This study examines the nonlinear dynamic relationship between spot and futures prices in grain markets. The empirical results provide strong evidence of price asymmetries. The corn spot price adjusts faster to futures price increases than futures price decreases, whereas the soybean spot price adjusts faster to futures price decreases than futures price increases. Although this asymmetric adjustment is found for a single market in Ontario, Canada, the results may also provide insights on the spot-futures price convergence issues in other commodity markets.
期刊：
IOP Conference Series: Earth and Environmental Science,2018年192(1) ISSN：1755-1307
通讯作者：
Guo, Siyuan
作者机构：
[Zhao, Yongsheng; Zhu, Weijun; Guo, Siyuan] State Grid Hunan Elect Power Co Ltd, Res Inst, Changsha 410007, Hunan, Peoples R China.;[Zhang, Shoushou] Cent South Univ Forestry & Technol, Bangor Coll, Changsha 410018, Hunan, Peoples R China.;[Song, Junying] State Grid Hunan Elect Power Co Ltd, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Guo, Siyuan] S;State Grid Hunan Elect Power Co Ltd, Res Inst, Changsha 410007, Hunan, Peoples R China.
会议名称：
2nd International Conference on Power and Energy Engineering (ICPEE)
会议时间：
SEP 03-05, 2018
会议地点：
Xiamen Univ Technol, Xiamen, PEOPLES R CHINA
会议主办单位：
Xiamen Univ Technol
会议论文集名称：
IOP Conference Series-Earth and Environmental Science
期刊：
Proceedings of the IEEE International Conference on Industrial Technology,2018年2018-February:2087-2092 ISSN：2643-2978
通讯作者：
Zhang, Shoushou
作者机构：
[Zhang, Shoushou; Iwendi, Celestine] Cent South Univ Forestry & Technol, Bangor Coll, Changsha, Hunan, Peoples R China.;[Guo, Siyuan] State Grid Hunan Elect Power Res Inst, Power Syst Technol Ctr, Changsha, Hunan, Peoples R China.
通讯机构：
[Zhang, Shoushou] C;Cent South Univ Forestry & Technol, Bangor Coll, Changsha, Hunan, Peoples R China.
会议名称：
19th IEEE International Conference on Industrial Technologies (ICIT)
会议时间：
FEB 19-22, 2018
会议地点：
Lyon, FRANCE
会议主办单位：
[Zhang, Shoushou;Iwendi, Celestine] Cent South Univ Forestry & Technol, Bangor Coll, Changsha, Hunan, Peoples R China.^[Guo, Siyuan] State Grid Hunan Elect Power Res Inst, Power Syst Technol Ctr, Changsha, Hunan, Peoples R China.
会议论文集名称：
IEEE International Conference on Industrial Technology
摘要：
<正>Introduction Impairment is an important part of financial accounting because this figure could influence company’s profit and further impacts the amount of tax paid by the company.Therefore,it is very crucial to determine the amount of asset’s impairment to make sure that the carrying amount accurately records the value of an asset.This paper’s goal is to discuss why the impairment of non-current assets continues to be seen as a difficult issue in financial reporting under international accounting and financial reporting standards.
