In order to meet the developing requirements for the output and quality of the products of Baosteel, the No. 4 slab continuous caster designed by the Danieli Company of Italy was built. Since starting up in December, ...In order to meet the developing requirements for the output and quality of the products of Baosteel, the No. 4 slab continuous caster designed by the Danieli Company of Italy was built. Since starting up in December, 2006, the casting machine has run smoothly in the aspects of production and quality control. It is equipped with advanced apparatus and technology, such as electric magnetic braking （EMBR） and soft reduction. Some operation indices have been continually improved, in order to ensure that slab quality meets the requirements of downstream products. Its total output reached 2.17 Mt in 2007. This study analyzes the operational indices and the slab quality.展开更多
Rice is a staple food crop in China.Since the 1950’s,many new varieties havebeen used and resulted in great increase ofyield.However there were still some barriersin the nationwide extension of new varietiesdue to th...Rice is a staple food crop in China.Since the 1950’s,many new varieties havebeen used and resulted in great increase ofyield.However there were still some barriersin the nationwide extension of new varietiesdue to the insufficient information about thecharacteristics of varieties.So,it is impor-tant to find ways of determining the potential展开更多
Since 2020,the Bank of Thailand(BOT)has initiated a new foreign exchange(FX)ecosystem to promote efficiency in Thai FX market.Under this initiative,the BOT has relaxed foreign exchange regulations to allow businesses ...Since 2020,the Bank of Thailand(BOT)has initiated a new foreign exchange(FX)ecosystem to promote efficiency in Thai FX market.Under this initiative,the BOT has relaxed foreign exchange regulations to allow businesses to better manage foreign exchange exposures,and to support market competition among financial service providers with the aim of lowering transaction costs,expanding variety of financial products and increasing accessibility to foreign exchange hedging tools by businesses.展开更多
The appearance of new product varieties and improvements in the quality of goods have both played key roles in the rapid growth of China＇s exports. However, these two important elements have not been formally integ...The appearance of new product varieties and improvements in the quality of goods have both played key roles in the rapid growth of China＇s exports. However, these two important elements have not been formally integrated into the demand equations for China＇s exports. As we demonstrate in this paper, income elasticity will be underestimated if new varieties of goods and quality improvements are omitted in price index and quantity index calculations, which are necessary for estimating the export demand function. Moreover, the faster new product varieties enter export markets, the greater the underestimation will be. In this paper, we develop an export demand equation that takes into account newproduct varieties and improvements in quality, and then calculate the demand function for China＇s exports using the data from 1992 to 2006. According to our estimation, the short-term income elasticity of demand for China ＂s exports is approximately 2.34, and the short-term price elasticity is approximately-0. 65. Our estimation predicts an increase in China＇s export value in the case of an RMB appreciation or export rebate rates reduction in the short term, due to the low price elasticity of China＇s exports, whose absolute value is less than 1. Our findings are novel and could have significant policy implications.展开更多
We study abelian subcategories and torsion pairs in Abramovich–Polishchuk’s heart.And we apply the construction from Liu(J Reine Angew Math 770:135–157,2021)on a full triangulated subcategory D_(S)^(≤1)in D(X×...We study abelian subcategories and torsion pairs in Abramovich–Polishchuk’s heart.And we apply the construction from Liu(J Reine Angew Math 770:135–157,2021)on a full triangulated subcategory D_(S)^(≤1)in D(X×S),for an arbitrary smooth projective variety S.We also define a notion of l-th level stability,which is a generalization of the slope stability and the Gieseker stability.We show that for any object E in Abramovich–Polishchuk’s heart,there is a unique filtration whose factors are l-th level semistable,and the phase vectors are decreasing in a lexicographic order.展开更多
文摘In order to meet the developing requirements for the output and quality of the products of Baosteel, the No. 4 slab continuous caster designed by the Danieli Company of Italy was built. Since starting up in December, 2006, the casting machine has run smoothly in the aspects of production and quality control. It is equipped with advanced apparatus and technology, such as electric magnetic braking （EMBR） and soft reduction. Some operation indices have been continually improved, in order to ensure that slab quality meets the requirements of downstream products. Its total output reached 2.17 Mt in 2007. This study analyzes the operational indices and the slab quality.
文摘Rice is a staple food crop in China.Since the 1950’s,many new varieties havebeen used and resulted in great increase ofyield.However there were still some barriersin the nationwide extension of new varietiesdue to the insufficient information about thecharacteristics of varieties.So,it is impor-tant to find ways of determining the potential
文摘Since 2020,the Bank of Thailand(BOT)has initiated a new foreign exchange(FX)ecosystem to promote efficiency in Thai FX market.Under this initiative,the BOT has relaxed foreign exchange regulations to allow businesses to better manage foreign exchange exposures,and to support market competition among financial service providers with the aim of lowering transaction costs,expanding variety of financial products and increasing accessibility to foreign exchange hedging tools by businesses.
基金financial support from the International Studies Division of the Chinese Acadcmy of Social Sciences
文摘The appearance of new product varieties and improvements in the quality of goods have both played key roles in the rapid growth of China＇s exports. However, these two important elements have not been formally integrated into the demand equations for China＇s exports. As we demonstrate in this paper, income elasticity will be underestimated if new varieties of goods and quality improvements are omitted in price index and quantity index calculations, which are necessary for estimating the export demand function. Moreover, the faster new product varieties enter export markets, the greater the underestimation will be. In this paper, we develop an export demand equation that takes into account newproduct varieties and improvements in quality, and then calculate the demand function for China＇s exports using the data from 1992 to 2006. According to our estimation, the short-term income elasticity of demand for China ＂s exports is approximately 2.34, and the short-term price elasticity is approximately-0. 65. Our estimation predicts an increase in China＇s export value in the case of an RMB appreciation or export rebate rates reduction in the short term, due to the low price elasticity of China＇s exports, whose absolute value is less than 1. Our findings are novel and could have significant policy implications.
文摘We study abelian subcategories and torsion pairs in Abramovich–Polishchuk’s heart.And we apply the construction from Liu(J Reine Angew Math 770:135–157,2021)on a full triangulated subcategory D_(S)^(≤1)in D(X×S),for an arbitrary smooth projective variety S.We also define a notion of l-th level stability,which is a generalization of the slope stability and the Gieseker stability.We show that for any object E in Abramovich–Polishchuk’s heart,there is a unique filtration whose factors are l-th level semistable,and the phase vectors are decreasing in a lexicographic order.
