The evaluation of the implementation effect of the power substation project can find out the problems of the project more comprehensively,which has important practical significance for the further development of the p...The evaluation of the implementation effect of the power substation project can find out the problems of the project more comprehensively,which has important practical significance for the further development of the power substation project.To ensure accuracy and real-time evaluation,this paper proposes a novel hybrid intelligent evaluation and prediction model based on improved TOPSIS and Long Short-Term Memory(LSTM)optimized by a Sperm Whale Algorithm(SWA).Firstly,under the background of considering the development of new energy,the influencing factors of power substation project implementation effect are analyzed from three aspects of technology,economy and society.Moreover,an evaluation model based on improved TOPSIS is constructed.Then,an intelligent prediction model based on SWA optimized LSTM is designed.Finally,the scientificity and accuracy of the proposed model are verified by empirical analysis,and the important factors affecting the implementation effect of power substation projects are pointed out.展开更多
Sometimes,people with interest in measuring quality of education take intoaccountlevel in academic performance and various associated factors.Usually,an aver-age academic performance is an accustomed way of assessment...Sometimes,people with interest in measuring quality of education take intoaccountlevel in academic performance and various associated factors.Usually,an aver-age academic performance is an accustomed way of assessment;however,this studyexamines on individual basis different factors that might have an impact on the acad-emic performance of undergraduate students.Data on the semester weighted averageof class of 2012 mathematics students were acquired from the Quality Assurance andPlanning Unit and the Examination Office of the Department of Mathematics,KwameNkrumah University of Science and Technology.The main factors considered for thisresearch were entry age,gender,entry aggregate,Ghana education service gradedlevel of senior high school attended and geographical location.The statistical methodconsidered was random effect.Since the interaction or variation around the slope washighly insignificant,the random intercept model was the better alternative ahead ofthe random intercept and slope model.Statistically,not all the parameter estimatesare significant at a=0.05 level of significance.It was observed that the differencein geographical location was not significant in the main effect model.Hence where astudent comes from has no influence on their academic performance.However,entryaggregate,entry age and gender were all significant.Nevertheless,the geographical location with regard to the Northern Belt was significant in the linear trend with astandard deviation of approximately 0.712.展开更多
Surface water availability(SWA,calculated by precipitation[P]minus actual evaporation[E])has great impacts on society.However,it remains unclear how SWA will change in a net-zero and net-negative future.In this study,...Surface water availability(SWA,calculated by precipitation[P]minus actual evaporation[E])has great impacts on society.However,it remains unclear how SWA will change in a net-zero and net-negative future.In this study,we examine future changes in P,E,and SWA from the Coupled Model Intercomparison Project Phase 6(CMIP6)for net-zero(2050–2060)and net-negative(2090–2100)CO_(2)emissions periods under pathway SSP1-1.9 relative to historical baseline(1995–2014)in the main Belt and Road Initiative(BRI)regions.展开更多
nds as a civilian group,completed the formation of the group through self-identity and the public recognition was as an external feedback of their self-awareness awakening.The life-or-death moment promoted the nds s g...nds as a civilian group,completed the formation of the group through self-identity and the public recognition was as an external feedback of their self-awareness awakening.The life-or-death moment promoted the nds s group cohesion and inspired their group survival consciousness.Therefore,the study of nds can be a good breakthrough and reference for the study of other commoner groups in ancient Egypt.展开更多
文摘The evaluation of the implementation effect of the power substation project can find out the problems of the project more comprehensively,which has important practical significance for the further development of the power substation project.To ensure accuracy and real-time evaluation,this paper proposes a novel hybrid intelligent evaluation and prediction model based on improved TOPSIS and Long Short-Term Memory(LSTM)optimized by a Sperm Whale Algorithm(SWA).Firstly,under the background of considering the development of new energy,the influencing factors of power substation project implementation effect are analyzed from three aspects of technology,economy and society.Moreover,an evaluation model based on improved TOPSIS is constructed.Then,an intelligent prediction model based on SWA optimized LSTM is designed.Finally,the scientificity and accuracy of the proposed model are verified by empirical analysis,and the important factors affecting the implementation effect of power substation projects are pointed out.
基金lt is a pleasure to thank Dr.Rev.William Obeng-Denteh,Department of Mathematics,Kwame Nkrumah University of Science and'Technology(KNUST)and also Mr.Kojo Ankar-Brewoo ofthe Quality Assurance and Planning Unit(QUAPU)for providing me with the data for my analysis.Mythanks also go to the Department of Mathematics,KNUST,for permitting me to carry out my research inthe department.I owe my deepest gratitude to my mother Miss Nancy Apagya-Bonney for supporting andfinancing me throughout my tertiary education.I thank my all Mr.Emmanuel Kwesi Sam,Aba Apagya-Bonney and family for all the kind words,finance and continuous encouragement that always pushed meto work harder.
文摘Sometimes,people with interest in measuring quality of education take intoaccountlevel in academic performance and various associated factors.Usually,an aver-age academic performance is an accustomed way of assessment;however,this studyexamines on individual basis different factors that might have an impact on the acad-emic performance of undergraduate students.Data on the semester weighted averageof class of 2012 mathematics students were acquired from the Quality Assurance andPlanning Unit and the Examination Office of the Department of Mathematics,KwameNkrumah University of Science and Technology.The main factors considered for thisresearch were entry age,gender,entry aggregate,Ghana education service gradedlevel of senior high school attended and geographical location.The statistical methodconsidered was random effect.Since the interaction or variation around the slope washighly insignificant,the random intercept model was the better alternative ahead ofthe random intercept and slope model.Statistically,not all the parameter estimatesare significant at a=0.05 level of significance.It was observed that the differencein geographical location was not significant in the main effect model.Hence where astudent comes from has no influence on their academic performance.However,entryaggregate,entry age and gender were all significant.Nevertheless,the geographical location with regard to the Northern Belt was significant in the linear trend with astandard deviation of approximately 0.712.
基金funded and supported by the National Key R&D Program of China(2018YFA0606501)the National Natural Science Foundation of China(U21A6001 and 42175173)+2 种基金the Second Tibetan Plateau Scientific Expedition and Research Program(2019QZKK0103)Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)(No.311022006)the National Key Scientific and Technological Infrastructure project"Earth System Science Numerical Simulator Facility"(EarthLab)
文摘Surface water availability(SWA,calculated by precipitation[P]minus actual evaporation[E])has great impacts on society.However,it remains unclear how SWA will change in a net-zero and net-negative future.In this study,we examine future changes in P,E,and SWA from the Coupled Model Intercomparison Project Phase 6(CMIP6)for net-zero(2050–2060)and net-negative(2090–2100)CO_(2)emissions periods under pathway SSP1-1.9 relative to historical baseline(1995–2014)in the main Belt and Road Initiative(BRI)regions.
文摘nds as a civilian group,completed the formation of the group through self-identity and the public recognition was as an external feedback of their self-awareness awakening.The life-or-death moment promoted the nds s group cohesion and inspired their group survival consciousness.Therefore,the study of nds can be a good breakthrough and reference for the study of other commoner groups in ancient Egypt.
