Agricultural insurance is an important system of rural financial support for agricultural development.Based on the analysis of agricultural insurance improving farmers'anti-risk ability and reducing the damage,the...Agricultural insurance is an important system of rural financial support for agricultural development.Based on the analysis of agricultural insurance improving farmers'anti-risk ability and reducing the damage,the dynamic relationship is discussed with the adoption of error correction model and the data of Guangdong province between 1997 and 2010.The result shows that the promotion of agricultural insurance depth is beneficial to reducing agricultural damage degree and there exists long-term equilibrium relationship.More precisely,agricultural insurance depth is the Granger reason of agricultural damage degree while the reverse relationship has not been supported yet.Based on the empirical analysis,this paper discusses the characteristics and foundation of agricultural production as well as market characteristics of agricultural insurance to further explore the necessity of financial support.展开更多
The effect of curing regime on degree ofAl3＋ substituting for Si^4＋ （Al/Si ratio） in C-S-H gels of hardened Portland cement pastes was investigated by 29Si magic angel spinning （MAS） nuclear magnetic resonance ...The effect of curing regime on degree ofAl3＋ substituting for Si^4＋ （Al/Si ratio） in C-S-H gels of hardened Portland cement pastes was investigated by 29Si magic angel spinning （MAS） nuclear magnetic resonance （NMR） with deconvolution technique. The curing regimes included the constant temperature （20, 40, 60 and 80 ℃） and variable temperature （simulated internal temperature of mass concrete with 60 ℃ peak）. The results indicate that constant temperature of 20 ℃ is beneficial to substitution ofAl3＋ for Si4＋, and AI/Si ratio changes to be steady after 180 d. The increase of Al/Si ratio at 40 ℃is less than that at 20℃ for 28 d. The other three regimes of high temperature increase Al/Si ratio only before 3 d, on the contrary to that from 3 to 28 d. However, the 20 ℃ curing stage from 28 to 180 d at variable temperature regime, is beneficial to the increase of AI/Si ratio which is still lower than that at constant temperature regime of 20 ℃ for the same age. A nonlinear relation exists between the Al/Si ratio and temperature variation or mean chain length （MCL） of C-S-H gels, furthermore, the amount ofAl3＋ which can occupy the bridging tetrahedra sites in C-S-H structure is insufficient in hardened Portland cement pastes.展开更多
In order to gain practical experience and hands-on skills,full-time professional master degree postgraduate in mineral processing engineering should engage in professional practices.Nonetheless,a series of problems,in...In order to gain practical experience and hands-on skills,full-time professional master degree postgraduate in mineral processing engineering should engage in professional practices.Nonetheless,a series of problems,including insufficient time for practice,low management level,inadequate implementation of the double-supervisor system,and poor results of professional practice,has reduced the effectiveness of professional practice.In view of the aforementioned problems and the characteristics of the discipline,this paper proposes several strategies for improving the effectiveness of professional practice for postgraduates in mineral processing engineering.展开更多
The most interesting and famous problem that puzzled the mathematicians all around the world is much likely to be the Fermat’s Last Theorem. However, since the Theorem was proposed, people can’t find a way to solve ...The most interesting and famous problem that puzzled the mathematicians all around the world is much likely to be the Fermat’s Last Theorem. However, since the Theorem was proposed, people can’t find a way to solve the problem until Andrew Wiles proved the Fermat’s Last Theorem through a very difficult method called Modular elliptic curves in 1995. In this paper, I firstly constructed a geometric method to prove Fermat’s Last Theorem, and in this way we can easily get the conclusion below: If a and b are integer and?a = b, n ∈ Q and n > 1, the value of c satisfies the function an + bn = cn that can never be integer;if a, b and c are integer and a ≠ b, n is integer and n > 2, the function an + bn = cn cannot be established.展开更多
This paper analyzes the observing results of vacuum degree in the the Jialichen bridge-head experimental site .The cause of vacuum degree developing below groundwater table is pointed out. The influence of vacuum degr...This paper analyzes the observing results of vacuum degree in the the Jialichen bridge-head experimental site .The cause of vacuum degree developing below groundwater table is pointed out. The influence of vacuum degree above the ground water table on pore water pressure is discussed. The results show that vacuum degree decreases along the depth because resistance. The resistance in the PVDS is lowest, in the silt is highest. Vacuum degree below groundwater table is produced mainly by dewatering or by escaping of sealed air from the end of flexible pipe. Vacuum degree above the ground water table in the sand drains makes great effect on pore water pressure. In the silt the pore water pressure does not change with the variation of vacuum degree under membrane in a short time.展开更多
The move identification of the present study followed the four-move model of V.K.Bhatia who is the representative personage of ESP.It is composed of four moves(1993):Introducing purpose,Describing methodology,Summariz...The move identification of the present study followed the four-move model of V.K.Bhatia who is the representative personage of ESP.It is composed of four moves(1993):Introducing purpose,Describing methodology,Summarizing results and Presenting conclusions.According to the above theory,Principles of the scientific method of sampling suggested by Nwogu(1997:121)as to the selection of journal were adopted in the study—representativity,reputation,accessibility.The focus is the analysis of move structures of abstract sections of them and contrastive studies between Economics and Humanities&Social Sciences of Lanzhou Jiaotong University in different moves of abstract sections.We find there are some similarities and differences between them.In general,the abstracts of Humanities&Social Sciences are more standard than Economics,which suggested English abstract sections of some Economics bachelor’s degree thesis need to be improved.展开更多
This paper examines the academic-work gap in terms of performance reality and performance expectations by expanding on the cultivation model of Master's students in the university context and the most recent indus...This paper examines the academic-work gap in terms of performance reality and performance expectations by expanding on the cultivation model of Master's students in the university context and the most recent industry requirements for talents'competence.The subjects of this paper are Master's degree holders,both academic and professional.The paper examines common issues encountered by enterprise professionals when employing Master's degree holders and proposes a university-enterprise joint cultivation model to achieve win-win outcomes for both higher education institutions and businesses.展开更多
The following is a narration before the video camera of the Henan TV Station on December 27, 2003 by a prison inmate named Liu Xianwei,former general manager of the Zhengzhou Sanxing Company, who is now working for a ...The following is a narration before the video camera of the Henan TV Station on December 27, 2003 by a prison inmate named Liu Xianwei,former general manager of the Zhengzhou Sanxing Company, who is now working for a master＇s degree in the prison.展开更多
This paper examines the origin,compilation,and circulation of A Barefoot Doctor’s Manual(Chijiao yisheng shouce赤脚医生手册),exploring the relationship between medical politics and knowledge transmission in China,and...This paper examines the origin,compilation,and circulation of A Barefoot Doctor’s Manual(Chijiao yisheng shouce赤脚医生手册),exploring the relationship between medical politics and knowledge transmission in China,and its impact on the promotion of Chinese medicine across the world.Barefoot doctors were a special group of rural medical practitioners active in a very special socio-political context.Various editions of barefoot doctor manuals and textbooks were published across China after the first publication of the Manual in 1969.The publication of these manuals and textbooks became an indelible hallmark of the“Cultural Revolution”(1966–1976),when political publications predominated.The Manual was not only a guide for barefoot doctors in their daily study and practice,but also a primary source of medical knowledge for ordinary people.In the middle of the 1970s,the Manual was translated into many languages and published worldwide.This paper argues that the publication of A Barefoot Doctor’s Manual embodied a public-oriented mode of knowledge transmission that emerged and was adopted during a very specific era,and though it was eventually substituted by a mode of training embedded in the formal medical education system,it demonstrated the impact of politics on medicine and health in the context of resource scarcity and low literacy.Changes in China’s geopolitical status,the West’s pursuit of alternative approaches to medicine and health,and the World Health Organization’s(WHO’s)concern over health universality and equity all contributed to the translation and circulation of the Manual,facilitating the dissemination of Chinese medicine worldwide.The paper thus presents empirical and theoretical contributions to research on the relationship between medical politics and knowledge transmission in China.展开更多
基金Supported by Guangdong National Science Foundation(04020558)
文摘Agricultural insurance is an important system of rural financial support for agricultural development.Based on the analysis of agricultural insurance improving farmers'anti-risk ability and reducing the damage,the dynamic relationship is discussed with the adoption of error correction model and the data of Guangdong province between 1997 and 2010.The result shows that the promotion of agricultural insurance depth is beneficial to reducing agricultural damage degree and there exists long-term equilibrium relationship.More precisely,agricultural insurance depth is the Granger reason of agricultural damage degree while the reverse relationship has not been supported yet.Based on the empirical analysis,this paper discusses the characteristics and foundation of agricultural production as well as market characteristics of agricultural insurance to further explore the necessity of financial support.
基金Funded by the Major State Basic Research Development Program of China(973 Program)(No.2009CB623201)National Natural Science Foundation of China(No.51302070)
文摘The effect of curing regime on degree ofAl3＋ substituting for Si^4＋ （Al/Si ratio） in C-S-H gels of hardened Portland cement pastes was investigated by 29Si magic angel spinning （MAS） nuclear magnetic resonance （NMR） with deconvolution technique. The curing regimes included the constant temperature （20, 40, 60 and 80 ℃） and variable temperature （simulated internal temperature of mass concrete with 60 ℃ peak）. The results indicate that constant temperature of 20 ℃ is beneficial to substitution ofAl3＋ for Si4＋, and AI/Si ratio changes to be steady after 180 d. The increase of Al/Si ratio at 40 ℃is less than that at 20℃ for 28 d. The other three regimes of high temperature increase Al/Si ratio only before 3 d, on the contrary to that from 3 to 28 d. However, the 20 ℃ curing stage from 28 to 180 d at variable temperature regime, is beneficial to the increase of AI/Si ratio which is still lower than that at constant temperature regime of 20 ℃ for the same age. A nonlinear relation exists between the Al/Si ratio and temperature variation or mean chain length （MCL） of C-S-H gels, furthermore, the amount ofAl3＋ which can occupy the bridging tetrahedra sites in C-S-H structure is insufficient in hardened Portland cement pastes.
基金This work was supported by The Graduate Education and Teaching Reform Project of CUMTB(YJG202200301)The Yueqi Outstanding Scholar Award of CUMTB and Science and Technology Major Project of Ordos City-Iconic Innovation Team(202204).
文摘In order to gain practical experience and hands-on skills,full-time professional master degree postgraduate in mineral processing engineering should engage in professional practices.Nonetheless,a series of problems,including insufficient time for practice,low management level,inadequate implementation of the double-supervisor system,and poor results of professional practice,has reduced the effectiveness of professional practice.In view of the aforementioned problems and the characteristics of the discipline,this paper proposes several strategies for improving the effectiveness of professional practice for postgraduates in mineral processing engineering.
文摘The most interesting and famous problem that puzzled the mathematicians all around the world is much likely to be the Fermat’s Last Theorem. However, since the Theorem was proposed, people can’t find a way to solve the problem until Andrew Wiles proved the Fermat’s Last Theorem through a very difficult method called Modular elliptic curves in 1995. In this paper, I firstly constructed a geometric method to prove Fermat’s Last Theorem, and in this way we can easily get the conclusion below: If a and b are integer and?a = b, n ∈ Q and n > 1, the value of c satisfies the function an + bn = cn that can never be integer;if a, b and c are integer and a ≠ b, n is integer and n > 2, the function an + bn = cn cannot be established.
文摘This paper analyzes the observing results of vacuum degree in the the Jialichen bridge-head experimental site .The cause of vacuum degree developing below groundwater table is pointed out. The influence of vacuum degree above the ground water table on pore water pressure is discussed. The results show that vacuum degree decreases along the depth because resistance. The resistance in the PVDS is lowest, in the silt is highest. Vacuum degree below groundwater table is produced mainly by dewatering or by escaping of sealed air from the end of flexible pipe. Vacuum degree above the ground water table in the sand drains makes great effect on pore water pressure. In the silt the pore water pressure does not change with the variation of vacuum degree under membrane in a short time.
文摘The move identification of the present study followed the four-move model of V.K.Bhatia who is the representative personage of ESP.It is composed of four moves(1993):Introducing purpose,Describing methodology,Summarizing results and Presenting conclusions.According to the above theory,Principles of the scientific method of sampling suggested by Nwogu(1997:121)as to the selection of journal were adopted in the study—representativity,reputation,accessibility.The focus is the analysis of move structures of abstract sections of them and contrastive studies between Economics and Humanities&Social Sciences of Lanzhou Jiaotong University in different moves of abstract sections.We find there are some similarities and differences between them.In general,the abstracts of Humanities&Social Sciences are more standard than Economics,which suggested English abstract sections of some Economics bachelor’s degree thesis need to be improved.
文摘This paper examines the academic-work gap in terms of performance reality and performance expectations by expanding on the cultivation model of Master's students in the university context and the most recent industry requirements for talents'competence.The subjects of this paper are Master's degree holders,both academic and professional.The paper examines common issues encountered by enterprise professionals when employing Master's degree holders and proposes a university-enterprise joint cultivation model to achieve win-win outcomes for both higher education institutions and businesses.
文摘The following is a narration before the video camera of the Henan TV Station on December 27, 2003 by a prison inmate named Liu Xianwei,former general manager of the Zhengzhou Sanxing Company, who is now working for a master＇s degree in the prison.
文摘This paper examines the origin,compilation,and circulation of A Barefoot Doctor’s Manual(Chijiao yisheng shouce赤脚医生手册),exploring the relationship between medical politics and knowledge transmission in China,and its impact on the promotion of Chinese medicine across the world.Barefoot doctors were a special group of rural medical practitioners active in a very special socio-political context.Various editions of barefoot doctor manuals and textbooks were published across China after the first publication of the Manual in 1969.The publication of these manuals and textbooks became an indelible hallmark of the“Cultural Revolution”(1966–1976),when political publications predominated.The Manual was not only a guide for barefoot doctors in their daily study and practice,but also a primary source of medical knowledge for ordinary people.In the middle of the 1970s,the Manual was translated into many languages and published worldwide.This paper argues that the publication of A Barefoot Doctor’s Manual embodied a public-oriented mode of knowledge transmission that emerged and was adopted during a very specific era,and though it was eventually substituted by a mode of training embedded in the formal medical education system,it demonstrated the impact of politics on medicine and health in the context of resource scarcity and low literacy.Changes in China’s geopolitical status,the West’s pursuit of alternative approaches to medicine and health,and the World Health Organization’s(WHO’s)concern over health universality and equity all contributed to the translation and circulation of the Manual,facilitating the dissemination of Chinese medicine worldwide.The paper thus presents empirical and theoretical contributions to research on the relationship between medical politics and knowledge transmission in China.
