In the process of accelerating industrialization, urbanization is inevitable and important to Chinas modernization drive. While people are cherishing the advantages of living in cities, the increasing negative impact ...In the process of accelerating industrialization, urbanization is inevitable and important to Chinas modernization drive. While people are cherishing the advantages of living in cities, the increasing negative impact of urbanization has to be put on the top of priority list. As urbanization proceeds, the existing pollution problem aggravates with not only increasing quantity of pollutants, but diversity as well. Science and technology have been contributing to urbanization process in both positive and negative ways. Nonetheless, the role of science and technology in promoting sustainable urbanization is increasingly important. China has been conducting environmental research and development since the early 1970s, and now is capable of supplying most technologies needed for urban environmental protection. To keep pace with the rapid urbanization process in China, environmental research and technology development should be strengthened. This is mostly dependent on domestic resources with introduction of advanced yet cost\|effective technologies from the rest of the world. With a survey of current urban environmental R & D in China and on\|going activities of the Chinese Academy of Sciences (CAS), recommendations on future UCL(University College London)\|CAS collaboration in the domain of urban environment are made.展开更多
Agricultural science and technology parks(ASTPs) represent an important growth pole in China’s agricultural modernization.Clarifying their diffusion laws can optimize the technological diffusion process and improve i...Agricultural science and technology parks(ASTPs) represent an important growth pole in China’s agricultural modernization.Clarifying their diffusion laws can optimize the technological diffusion process and improve its efficiency. Our study uses disaggregated spatial information in its model to analyze ASTP technology diffusion in a heterogeneous space. We constructed a comprehensive index system to evaluate the diffusion environmental quality and introduced the heterogeneous diffusion equation to calculate the technological diffusion probability. We applied this framework to a real-world scenario: the apple planting technology diffusion of the Yangling ASTP in the Loess Plateau, China. The results indicated: (1)the technological diffusion environment of the Loess Plateau advantageous apple producing area showed strong spatial heterogeneity caused by climate, topography, and external transportation links.(2) Under the combined effects of distance and spatial heterogeneity, the spatial diffusion pattern of the Yangling ASTP apple technology was expansion diffusion supplemented by hierarchical diffusion and banded diffusion, and (3) ASTP technology diffusion showed a strong distance attenuation effect, and the frictional effect of distance can be decreased by improving the diffusion environmental quality. These laws can promote regional balanced ASTP-driven development.展开更多
This study aimed to investigate the effects of making Science, Technology, Society and En-vironment relations on students’ comprehen-sion of chemistry topics through teaching che-mistry using STSE approach at seconda...This study aimed to investigate the effects of making Science, Technology, Society and En-vironment relations on students’ comprehen-sion of chemistry topics through teaching che-mistry using STSE approach at secondary level. The study made use of the research model where pre and post tests were administered to control and treatment groups. The Chemistry Achievement Test (CAT) was used in the study. The sampling consisted of Grade 9 students studying at Anatolian High School and Voca-tional High School. Since the sampling had not been equated, in order to determine students’ logical and spatial thinking skills, they were administered Logical Thinking Skill Test and Mental Rotation test as pretests. Students were chosen randomly to take part in two control and two treatment groups. This experimental study was applied to the treatment group in teaching of “Separation of Mixtures” topic in Grade 9 Chemistry course during a four-week period. Students in the control group were taught through the traditional teaching methods. The data obtained were analyzed through the SPSS Software. As a result of the study, statistically significant increases were observed in the achievement levels of treatment group which received instruction using STSE relations. The change observed in the achievement levels of the control group was not statistically signifi-cant. The difference between the achievement levels of control and treatment groups in the posttests were favoring the treatment groups.展开更多
Firstly,current situation and main problems of science and technology development of soil and water conservation were analyzed,and then roles of science and technology in soil and water conservation were studied. At l...Firstly,current situation and main problems of science and technology development of soil and water conservation were analyzed,and then roles of science and technology in soil and water conservation were studied. At last,exploration ways of roles of science and technology in soil and water conservation were proposed.展开更多
The 18th National Congress of CPC, which concluded not long ago, put forward the ambitious goal ofcompletely building up a better-off society by 2020. Since the reform and opening of 1978, especially in the past decad...The 18th National Congress of CPC, which concluded not long ago, put forward the ambitious goal ofcompletely building up a better-off society by 2020. Since the reform and opening of 1978, especially in the past decade, the human rights construction of China has made enormous achievements. The complete building up of a better-off society requires taking comprehensive consideration of many aspects, such as the economy, politics, culture,展开更多
Light screen velocity measuring method with unique advantages has been widely used in the velocity measurement of various moving bodies.For large air resistance and friction force which the big moving bodies are subje...Light screen velocity measuring method with unique advantages has been widely used in the velocity measurement of various moving bodies.For large air resistance and friction force which the big moving bodies are subjected to during the light screen velocity measuring,the principle of velocity correction was proposed and a velocity correction equation was derived.A light screen velocity measuring method was used to measure the velocity of big moving bodies which have complex velocity attenuation,and the better results were gained in practical tests.The measuring uncertainty after the velocity correction was calculated.展开更多
文摘In the process of accelerating industrialization, urbanization is inevitable and important to Chinas modernization drive. While people are cherishing the advantages of living in cities, the increasing negative impact of urbanization has to be put on the top of priority list. As urbanization proceeds, the existing pollution problem aggravates with not only increasing quantity of pollutants, but diversity as well. Science and technology have been contributing to urbanization process in both positive and negative ways. Nonetheless, the role of science and technology in promoting sustainable urbanization is increasingly important. China has been conducting environmental research and development since the early 1970s, and now is capable of supplying most technologies needed for urban environmental protection. To keep pace with the rapid urbanization process in China, environmental research and technology development should be strengthened. This is mostly dependent on domestic resources with introduction of advanced yet cost\|effective technologies from the rest of the world. With a survey of current urban environmental R & D in China and on\|going activities of the Chinese Academy of Sciences (CAS), recommendations on future UCL(University College London)\|CAS collaboration in the domain of urban environment are made.
基金Under the auspices of the National Natural Science Foundation of China(No.41771129)Social Science Foundation of Shaanxi(No.2015D055)Social Science Research Project on Major Theoretical and Practical Issues of Shaanxi(No.2020Z026)。
文摘Agricultural science and technology parks(ASTPs) represent an important growth pole in China’s agricultural modernization.Clarifying their diffusion laws can optimize the technological diffusion process and improve its efficiency. Our study uses disaggregated spatial information in its model to analyze ASTP technology diffusion in a heterogeneous space. We constructed a comprehensive index system to evaluate the diffusion environmental quality and introduced the heterogeneous diffusion equation to calculate the technological diffusion probability. We applied this framework to a real-world scenario: the apple planting technology diffusion of the Yangling ASTP in the Loess Plateau, China. The results indicated: (1)the technological diffusion environment of the Loess Plateau advantageous apple producing area showed strong spatial heterogeneity caused by climate, topography, and external transportation links.(2) Under the combined effects of distance and spatial heterogeneity, the spatial diffusion pattern of the Yangling ASTP apple technology was expansion diffusion supplemented by hierarchical diffusion and banded diffusion, and (3) ASTP technology diffusion showed a strong distance attenuation effect, and the frictional effect of distance can be decreased by improving the diffusion environmental quality. These laws can promote regional balanced ASTP-driven development.
文摘This study aimed to investigate the effects of making Science, Technology, Society and En-vironment relations on students’ comprehen-sion of chemistry topics through teaching che-mistry using STSE approach at secondary level. The study made use of the research model where pre and post tests were administered to control and treatment groups. The Chemistry Achievement Test (CAT) was used in the study. The sampling consisted of Grade 9 students studying at Anatolian High School and Voca-tional High School. Since the sampling had not been equated, in order to determine students’ logical and spatial thinking skills, they were administered Logical Thinking Skill Test and Mental Rotation test as pretests. Students were chosen randomly to take part in two control and two treatment groups. This experimental study was applied to the treatment group in teaching of “Separation of Mixtures” topic in Grade 9 Chemistry course during a four-week period. Students in the control group were taught through the traditional teaching methods. The data obtained were analyzed through the SPSS Software. As a result of the study, statistically significant increases were observed in the achievement levels of treatment group which received instruction using STSE relations. The change observed in the achievement levels of the control group was not statistically signifi-cant. The difference between the achievement levels of control and treatment groups in the posttests were favoring the treatment groups.
文摘Firstly,current situation and main problems of science and technology development of soil and water conservation were analyzed,and then roles of science and technology in soil and water conservation were studied. At last,exploration ways of roles of science and technology in soil and water conservation were proposed.
文摘The 18th National Congress of CPC, which concluded not long ago, put forward the ambitious goal ofcompletely building up a better-off society by 2020. Since the reform and opening of 1978, especially in the past decade, the human rights construction of China has made enormous achievements. The complete building up of a better-off society requires taking comprehensive consideration of many aspects, such as the economy, politics, culture,
文摘Light screen velocity measuring method with unique advantages has been widely used in the velocity measurement of various moving bodies.For large air resistance and friction force which the big moving bodies are subjected to during the light screen velocity measuring,the principle of velocity correction was proposed and a velocity correction equation was derived.A light screen velocity measuring method was used to measure the velocity of big moving bodies which have complex velocity attenuation,and the better results were gained in practical tests.The measuring uncertainty after the velocity correction was calculated.
