Against the background of the rapid growth of Chinese tourists to Japan,by observing the changes in the patterns of Chinese visitors to Japan and probing into the insufficiency of researches in the past studies,it is ...Against the background of the rapid growth of Chinese tourists to Japan,by observing the changes in the patterns of Chinese visitors to Japan and probing into the insufficiency of researches in the past studies,it is believed that online travel reviews can be used to present the current situation of tourism industry and be of value to provide the basic data for long-term sustainable research after analysis,including how to increase Chinese tourists’satisfaction continuously and how to promote the service level of related industries.In this study,the unknown information caused by the cultural and regional differences in the reviews of Chinese visitors’to Japan is taken as the prediction object and the local tourists’travel comments as a reference group.Then,the factor decomposition technology and text mining technology are applied to predict the standards of services and projects that can meet the characteristics and demands of Chinese tourists.The comments of Chinese and Japanese tourists who stayed at hotels in the Hakone scenic area from May 2018 to April 2019(time span:one year)are taken as the samples in this study.Thus,the disparity in the purpose of travel between Chinese tourists and Japanese local tourists in this scenic spot can be effectively displayed.Besides,it also clearly points out that due to a lack of understanding of Japanese food culture,Chinese visitors were in urgent need of relevant services and assistance.Therefore,this method will provide guidance for the growth of the local tourism industry and also demonstrate the feasibility of research methods.In the end,a complete analysis and calculation method for online comment text mining is established,which also provides guidance on improving the satisfaction of Chinese visitors to Japan.Besides,this method can also be considered to apply in more tourists with the same cultural background.展开更多
In this paper, on the basis of the heat conduction equation without consideration of the advection and turbulence effects, one-dimensional model for describing surface sea temperature ( T1), bottom sea temperature ( T...In this paper, on the basis of the heat conduction equation without consideration of the advection and turbulence effects, one-dimensional model for describing surface sea temperature ( T1), bottom sea temperature ( Tt ) and the thickness of the upper homogeneous layer ( h ) is developed in terms of the dimensionless temperature θT and depth η and self-simulation function θT - f(η) of vertical temperature profile by means of historical temperature data.The results of trial prediction with our one-dimensional model on T, Th, h , the thickness and gradient of thermocline are satisfactory to some extent.展开更多
The development of new drugs for therapeutic purposes has become very expensive and time-consuming in American and European countries.It is estimated that on the average 50 to 100 million dollars and 10 or more years ...The development of new drugs for therapeutic purposes has become very expensive and time-consuming in American and European countries.It is estimated that on the average 50 to 100 million dollars and 10 or more years from the time of patenting are required to make a new drug available for general prescription. Every new drug needs to be charac-展开更多
The Swarm satellite mission was launched on 22 November 2013,it is the first European Space Agency’s constellation of three satellites,dedicated to monitoring geomagnetic field changes.The measurements delivered by t...The Swarm satellite mission was launched on 22 November 2013,it is the first European Space Agency’s constellation of three satellites,dedicated to monitoring geomagnetic field changes.The measurements delivered by the three satellites are very valuable for a range of applications,including the earthquake prediction study.However,for more than 5 years,relatively little advancement has been achieved in establishing a systematic approach for detecting anomalies from the satellite measurements for predicting earthquakes.This paper presents the challenges of developing a pragmatic framework for automatic anomaly detection and highlights innovative features of functional components developed.Through a case study we demonstrate a functionality pipeline of the system in detecting anomalies,and present our solutions to coping with data sparsity and parameter tuning as well as insights into the differences between discovering seismic anomalies from periodic and non-periodic data observed by the Swarm satellites.展开更多
A microseismic monitoring system was used in the Donggua Shan underground copper mine, and its application was introduced. The spacial distribution of the seismic event was monitored effectively during mining with thi...A microseismic monitoring system was used in the Donggua Shan underground copper mine, and its application was introduced. The spacial distribution of the seismic event was monitored effectively during mining with this system. The distribution of the seismic intensity in different time periods and in the different mining districts was obtained via the clustering analysis of the monitored results, and the different intensity concentration districts of seismicity were compartmentalized. The various characteristics and waveforms of different vibrations in the underground mine were revealed with the help of the micro-seismic monitoring system. It was proved that the construction and application of the micro-seismic monitoring system in the mine not only realized the continuous monitoring of seismicity in the deep mine, but also settled an this system.展开更多
文摘Against the background of the rapid growth of Chinese tourists to Japan,by observing the changes in the patterns of Chinese visitors to Japan and probing into the insufficiency of researches in the past studies,it is believed that online travel reviews can be used to present the current situation of tourism industry and be of value to provide the basic data for long-term sustainable research after analysis,including how to increase Chinese tourists’satisfaction continuously and how to promote the service level of related industries.In this study,the unknown information caused by the cultural and regional differences in the reviews of Chinese visitors’to Japan is taken as the prediction object and the local tourists’travel comments as a reference group.Then,the factor decomposition technology and text mining technology are applied to predict the standards of services and projects that can meet the characteristics and demands of Chinese tourists.The comments of Chinese and Japanese tourists who stayed at hotels in the Hakone scenic area from May 2018 to April 2019(time span:one year)are taken as the samples in this study.Thus,the disparity in the purpose of travel between Chinese tourists and Japanese local tourists in this scenic spot can be effectively displayed.Besides,it also clearly points out that due to a lack of understanding of Japanese food culture,Chinese visitors were in urgent need of relevant services and assistance.Therefore,this method will provide guidance for the growth of the local tourism industry and also demonstrate the feasibility of research methods.In the end,a complete analysis and calculation method for online comment text mining is established,which also provides guidance on improving the satisfaction of Chinese visitors to Japan.Besides,this method can also be considered to apply in more tourists with the same cultural background.
文摘In this paper, on the basis of the heat conduction equation without consideration of the advection and turbulence effects, one-dimensional model for describing surface sea temperature ( T1), bottom sea temperature ( Tt ) and the thickness of the upper homogeneous layer ( h ) is developed in terms of the dimensionless temperature θT and depth η and self-simulation function θT - f(η) of vertical temperature profile by means of historical temperature data.The results of trial prediction with our one-dimensional model on T, Th, h , the thickness and gradient of thermocline are satisfactory to some extent.
文摘The development of new drugs for therapeutic purposes has become very expensive and time-consuming in American and European countries.It is estimated that on the average 50 to 100 million dollars and 10 or more years from the time of patenting are required to make a new drug available for general prescription. Every new drug needs to be charac-
基金National Natural Science Foundation of China(No.41374077)。
文摘The Swarm satellite mission was launched on 22 November 2013,it is the first European Space Agency’s constellation of three satellites,dedicated to monitoring geomagnetic field changes.The measurements delivered by the three satellites are very valuable for a range of applications,including the earthquake prediction study.However,for more than 5 years,relatively little advancement has been achieved in establishing a systematic approach for detecting anomalies from the satellite measurements for predicting earthquakes.This paper presents the challenges of developing a pragmatic framework for automatic anomaly detection and highlights innovative features of functional components developed.Through a case study we demonstrate a functionality pipeline of the system in detecting anomalies,and present our solutions to coping with data sparsity and parameter tuning as well as insights into the differences between discovering seismic anomalies from periodic and non-periodic data observed by the Swarm satellites.
基金This work was financially supported by the National Key Technologies R & D Program of China (No.2004BA615A-04).
文摘A microseismic monitoring system was used in the Donggua Shan underground copper mine, and its application was introduced. The spacial distribution of the seismic event was monitored effectively during mining with this system. The distribution of the seismic intensity in different time periods and in the different mining districts was obtained via the clustering analysis of the monitored results, and the different intensity concentration districts of seismicity were compartmentalized. The various characteristics and waveforms of different vibrations in the underground mine were revealed with the help of the micro-seismic monitoring system. It was proved that the construction and application of the micro-seismic monitoring system in the mine not only realized the continuous monitoring of seismicity in the deep mine, but also settled an this system.
