The quantitative and qualitative supply of teachers has a significant influence on student academic performance.Based on the samples collected from four provinces and municipalities in China for the Program for Intern...The quantitative and qualitative supply of teachers has a significant influence on student academic performance.Based on the samples collected from four provinces and municipalities in China for the Program for International Student Assessment(PISA)2018,this study analyzes the effects of the supply of teachers on the academic performance of 15-year-old students through a hierarchical linear model(HLM)as well as a quantile regression model.The study has found that the shortage of teachers and the proportion of teachers with a master’s degree significantly affect student academic performance,and the supply of teachers with higher degrees has a decreasing marginal benefit on student academic performance;its best marginal benefit on student academic performance is achieved when the proportion of teachers with a master’s degree reaches about 75%.For students in different academic performance subgroups,the marginal benefit of an increase in the proportion of teachers with a master’s degree in schools is higher for“top students”than for“students with learning difficulties.”In terms of the difference between urban and rural areas,the shortage of teachers in rural schools is more prominent than that in urban schools,and teachers with higher degrees tend to cluster in core cities.The marginal benefit of an increase in the proportion of teachers with a master’s degree is higher for improving student academic performance in rural areas.Therefore,it is recommended to design a policy of differentiated compensatory earnings for rural teachers,and efforts should be enhanced to promote programs for supporting high-quality teachers.In addition,the allocation of teachers should follow the principle of“differentiated equity,”and more differentiated teaching strategies should be adopted for students with different academic abilities.展开更多
Product innovation practices are documented in the historic 1968and 1982Booze,Allen&Hamilton(BAH)studies followed by the Product Development and Management Association’s(PDMA)four longitudinal best practices/comp...Product innovation practices are documented in the historic 1968and 1982Booze,Allen&Hamilton(BAH)studies followed by the Product Development and Management Association’s(PDMA)four longitudinal best practices/comparative performance assessment studies(CPAS)conducted since the 1990s.These significant NPD best practices benchmarking studies are reviewed within the context of evolution of product innovation practices during 1968-2012.The widening gap in share of profits from new products between the best NPD firms and the rest in 2012informs us that the Schumpeter’s theory of innovation is still relevant in current markets.The PDMA 2012CPAS found that in Asia,small enterprises were not very proficient in NPD.Where as large Asian enterprises needed 7ideas for one commercial success in line with the proficiency of North American enterprises,small Asian enterprises needed 18ideas for one commercial success.A key insight for small Asian enterprises from 2012PDMA CPAS is that it is more important to strive to become the"best"than endeavoring to introduce a large number of new products each year.Insights to improve NPD performance in SMEs are offered along with a systematic framework to achieve successful product innovation.SMEs can begin their improvement effort with self-assessment utilizing the three organizing principles for NPD and eight action categories outlined in the Thota framework for innovation.展开更多
文摘The quantitative and qualitative supply of teachers has a significant influence on student academic performance.Based on the samples collected from four provinces and municipalities in China for the Program for International Student Assessment(PISA)2018,this study analyzes the effects of the supply of teachers on the academic performance of 15-year-old students through a hierarchical linear model(HLM)as well as a quantile regression model.The study has found that the shortage of teachers and the proportion of teachers with a master’s degree significantly affect student academic performance,and the supply of teachers with higher degrees has a decreasing marginal benefit on student academic performance;its best marginal benefit on student academic performance is achieved when the proportion of teachers with a master’s degree reaches about 75%.For students in different academic performance subgroups,the marginal benefit of an increase in the proportion of teachers with a master’s degree in schools is higher for“top students”than for“students with learning difficulties.”In terms of the difference between urban and rural areas,the shortage of teachers in rural schools is more prominent than that in urban schools,and teachers with higher degrees tend to cluster in core cities.The marginal benefit of an increase in the proportion of teachers with a master’s degree is higher for improving student academic performance in rural areas.Therefore,it is recommended to design a policy of differentiated compensatory earnings for rural teachers,and efforts should be enhanced to promote programs for supporting high-quality teachers.In addition,the allocation of teachers should follow the principle of“differentiated equity,”and more differentiated teaching strategies should be adopted for students with different academic abilities.
文摘Product innovation practices are documented in the historic 1968and 1982Booze,Allen&Hamilton(BAH)studies followed by the Product Development and Management Association’s(PDMA)four longitudinal best practices/comparative performance assessment studies(CPAS)conducted since the 1990s.These significant NPD best practices benchmarking studies are reviewed within the context of evolution of product innovation practices during 1968-2012.The widening gap in share of profits from new products between the best NPD firms and the rest in 2012informs us that the Schumpeter’s theory of innovation is still relevant in current markets.The PDMA 2012CPAS found that in Asia,small enterprises were not very proficient in NPD.Where as large Asian enterprises needed 7ideas for one commercial success in line with the proficiency of North American enterprises,small Asian enterprises needed 18ideas for one commercial success.A key insight for small Asian enterprises from 2012PDMA CPAS is that it is more important to strive to become the"best"than endeavoring to introduce a large number of new products each year.Insights to improve NPD performance in SMEs are offered along with a systematic framework to achieve successful product innovation.SMEs can begin their improvement effort with self-assessment utilizing the three organizing principles for NPD and eight action categories outlined in the Thota framework for innovation.
