This paper details the latest situation and features of the technology development in terms of China’s oral care products industry and proposes the following development direction in this sector. Meanwhile, the paper...This paper details the latest situation and features of the technology development in terms of China’s oral care products industry and proposes the following development direction in this sector. Meanwhile, the paper analyzes the popular products in the international market of oral care products and also predicts the trend of the product future in China’s market.展开更多
[Objective]The research aimed to study the response of plant climatic productivity to warming and drying tendency in Huanren in the past 58 years.[Method]Based on the temperature and precipitation data in Huanren from...[Objective]The research aimed to study the response of plant climatic productivity to warming and drying tendency in Huanren in the past 58 years.[Method]Based on the temperature and precipitation data in Huanren from 1953 to 2010,using trend analysis,Thornthwaite Memorial model and Mann-Kendall detection method,change characteristics of climate and plant climatic productivity in Huanren were analyzed,and the regression evaluation model between plant climatic productivity and temperature and precipitation was established.[Result]Annual average temperature in Huanren presented a significant upward trend,and its linear tendency rate was 0.29℃/10 a;annual precipitation presented a decreasing trend,and its linear tendency rate was-13.29 mm/10 a;dryness presented a declining trend.The warming and drying trend was obvious in Huanren.Plant climatic productivity presented a significant increasing trend,and its linear tendency rate was 8.39 g/（m2·10 a）.Plant climatic productivity was closely related to precipitation and temperature.[Conclusion]The research could provide basis and reference for the adjustment of agricultural structure and sufficiently playing the advantages of climate resources in Huanren.展开更多
Based on the annual sample data on food production in China since the reform and opening up,we select 8 main factors influencing the total food production( growing area,application rate of chemical fertilizer,effectiv...Based on the annual sample data on food production in China since the reform and opening up,we select 8 main factors influencing the total food production( growing area,application rate of chemical fertilizer,effective irrigation area,the affected area,total machinery power,food production cost index,food production price index,financial funds for supporting agriculture,farmers and countryside),and put them into categories of material input,resources and environment,and policy factors. Using the factor analysis,we carry out the multi-angle analysis of these typical influencing factors one by one through the time series trend chart. It is found that application rate of chemical fertilizer,the growing area of food crops and drought-affected area become the key factors affecting food production. On this basis,we set forth the corresponding recommendations for improving the comprehensive food production capacity.展开更多
The proposed model considers the products with finite shelf-life which causes a small amount of decay. The market demand is assumed to be level dependent and in a linear form. The model has also considered the constan...The proposed model considers the products with finite shelf-life which causes a small amount of decay. The market demand is assumed to be level dependent and in a linear form. The model has also considered the constant production rate which stops attaining a desired level of inventories and that is the highest level of inventories. Production starts with a buffer stock and without any sort of backlogs. Due to the market demand and product’s decay, the inventory reduces to the level of buffer stock where again the production cycle starts. With a numerical search procedure the proof of the proposed model has been shown. The objective of the model is to obtain the total average optimum inventory cost and optimum ordering cycle.展开更多
The demand for information technology in a new way forced us to reconsider our views on the state of the information and communication technology market. The analysis of the trend in the development of the information...The demand for information technology in a new way forced us to reconsider our views on the state of the information and communication technology market. The analysis of the trend in the development of the information space is necessary for the formation of a scenario for the formation of a stable information and communication industry in the hotel state. The article proposes the structure of the IT market, defines the role of its main parts and concludes about their impact on the further development of the IT industry. A brief overview of the components of the modern IT market is presented. The greatest influence is provided by cloud solutions, the Internet of Things market and digital products in the field of artificial intelligence. Observation of changes in the IT market allows us to predict further events related to digitalization. In conclusion, possible ways of developing the IT market are given.展开更多
海南岛作为国家生态文明实验区,针对其植被净初级生产力(NPP)变化趋势及气候驱动力尚未明确的问题,基于MODIS数据分析了海南岛2000—2018年NPP、植被呼吸(Re)和植被初级生产力(GPP)的时空变化趋势,并利用多元线性回归分析量化并识别海南...海南岛作为国家生态文明实验区,针对其植被净初级生产力(NPP)变化趋势及气候驱动力尚未明确的问题,基于MODIS数据分析了海南岛2000—2018年NPP、植被呼吸(Re)和植被初级生产力(GPP)的时空变化趋势,并利用多元线性回归分析量化并识别海南岛NPP的主要气候驱动力。结果表明,GPP、NPP和Re均呈现上升趋势,NPP的增长趋势最小(增速为0.016 kg C·m^(-2)·a^(-1))且仅在海南岛中部偏北地区呈不显著的下降趋势,而其余地区呈上升趋势。多元线性回归分析表明:太阳辐射主导着海南岛大部分地区NPP变化;海南岛中部偏北地区NPP变化由降水和温度共同驱动,中部偏南地区则由降水和太阳辐射共同驱动;温度驱动着海南岛西南部和南部地区的NPP变化。展开更多
文摘This paper details the latest situation and features of the technology development in terms of China’s oral care products industry and proposes the following development direction in this sector. Meanwhile, the paper analyzes the popular products in the international market of oral care products and also predicts the trend of the product future in China’s market.
基金Supported by the Item of Benxi Meteorological Bureau,China(BQ201002)
文摘[Objective]The research aimed to study the response of plant climatic productivity to warming and drying tendency in Huanren in the past 58 years.[Method]Based on the temperature and precipitation data in Huanren from 1953 to 2010,using trend analysis,Thornthwaite Memorial model and Mann-Kendall detection method,change characteristics of climate and plant climatic productivity in Huanren were analyzed,and the regression evaluation model between plant climatic productivity and temperature and precipitation was established.[Result]Annual average temperature in Huanren presented a significant upward trend,and its linear tendency rate was 0.29℃/10 a;annual precipitation presented a decreasing trend,and its linear tendency rate was-13.29 mm/10 a;dryness presented a declining trend.The warming and drying trend was obvious in Huanren.Plant climatic productivity presented a significant increasing trend,and its linear tendency rate was 8.39 g/（m2·10 a）.Plant climatic productivity was closely related to precipitation and temperature.[Conclusion]The research could provide basis and reference for the adjustment of agricultural structure and sufficiently playing the advantages of climate resources in Huanren.
基金This study was performed under a contract by CNPC USA.Authors would like to express their gratitude to CNPC USA management for its support and permission to publish the data as well as to IHS Markit for providing data for the research.
基金Supported by Humanities and Social Sciences Fund of the Ministry of Education(12YJC790094)Tianjin Philosophy and Social Science Planning Project(TJYY13-028TJLJ13-011)
文摘Based on the annual sample data on food production in China since the reform and opening up,we select 8 main factors influencing the total food production( growing area,application rate of chemical fertilizer,effective irrigation area,the affected area,total machinery power,food production cost index,food production price index,financial funds for supporting agriculture,farmers and countryside),and put them into categories of material input,resources and environment,and policy factors. Using the factor analysis,we carry out the multi-angle analysis of these typical influencing factors one by one through the time series trend chart. It is found that application rate of chemical fertilizer,the growing area of food crops and drought-affected area become the key factors affecting food production. On this basis,we set forth the corresponding recommendations for improving the comprehensive food production capacity.
文摘The proposed model considers the products with finite shelf-life which causes a small amount of decay. The market demand is assumed to be level dependent and in a linear form. The model has also considered the constant production rate which stops attaining a desired level of inventories and that is the highest level of inventories. Production starts with a buffer stock and without any sort of backlogs. Due to the market demand and product’s decay, the inventory reduces to the level of buffer stock where again the production cycle starts. With a numerical search procedure the proof of the proposed model has been shown. The objective of the model is to obtain the total average optimum inventory cost and optimum ordering cycle.
文摘The demand for information technology in a new way forced us to reconsider our views on the state of the information and communication technology market. The analysis of the trend in the development of the information space is necessary for the formation of a scenario for the formation of a stable information and communication industry in the hotel state. The article proposes the structure of the IT market, defines the role of its main parts and concludes about their impact on the further development of the IT industry. A brief overview of the components of the modern IT market is presented. The greatest influence is provided by cloud solutions, the Internet of Things market and digital products in the field of artificial intelligence. Observation of changes in the IT market allows us to predict further events related to digitalization. In conclusion, possible ways of developing the IT market are given.
文摘海南岛作为国家生态文明实验区,针对其植被净初级生产力(NPP)变化趋势及气候驱动力尚未明确的问题,基于MODIS数据分析了海南岛2000—2018年NPP、植被呼吸(Re)和植被初级生产力(GPP)的时空变化趋势,并利用多元线性回归分析量化并识别海南岛NPP的主要气候驱动力。结果表明,GPP、NPP和Re均呈现上升趋势,NPP的增长趋势最小(增速为0.016 kg C·m^(-2)·a^(-1))且仅在海南岛中部偏北地区呈不显著的下降趋势,而其余地区呈上升趋势。多元线性回归分析表明:太阳辐射主导着海南岛大部分地区NPP变化;海南岛中部偏北地区NPP变化由降水和温度共同驱动,中部偏南地区则由降水和太阳辐射共同驱动;温度驱动着海南岛西南部和南部地区的NPP变化。
