Gastrointestinal stromal tumor （GIST） is the most common mesenchymal malignancy of the gastrointestinal tract.GISTs may coexist with different types of cancer,either synchronous or metachronous （1）.Most GISTs deve...Gastrointestinal stromal tumor （GIST） is the most common mesenchymal malignancy of the gastrointestinal tract.GISTs may coexist with different types of cancer,either synchronous or metachronous （1）.Most GISTs develop in a sporadic fashion,but familial occurrence,such as neurofibromatosis and Carney-triad,has also been reported （2）.The overall frequency of second tumors in different series varied from 4.5% to 33%.The most frequent types of GIST-associated cancers were gastrointestinal carcinomas （47%）,lymphoma/leukemia （7%）,carcinomas of prostate （9%）,breast （7%）,kidney （6%）,lung （5%）,female genital tract （5%）,carcinoid tumors （3%）,soft tissue and bone sarcomas （3%）,malignant melanoma （2%） and seminoma （1%） （1,3-5）.展开更多
We study evolutionary games in two-layer networks by introducing the correlation between two layers through the C-dominance or the D-dominance. We assume that individuals play prisoner＇s dilemma game （PDG） in one l...We study evolutionary games in two-layer networks by introducing the correlation between two layers through the C-dominance or the D-dominance. We assume that individuals play prisoner＇s dilemma game （PDG） in one layer and snowdrift game （SDG） in the other. We explore the dependences of the fraction of the strategy cooperation in different layers on the game parameter and initial conditions. The results on two-layer square lattices show that, when cooperation is the dominant strategy, initial conditions strongly influence cooperation in the PDG layer while have no impact in the SDG layer. Moreover, in contrast to the result for PDG in single-layer square lattices, the parameter regime where cooperation could be maintained expands significantly in the PDG layer. We also investigate the effects of mutation and network topology. We find that different mutation rates do not change the cooperation behaviors. Moreover, similar behaviors on cooperation could be found in two-layer random networks.展开更多
The Atomic Mass Evaluation （AME） is created by collecting all possible experimental data from available literatures, and examining them carefully and compiling them in an appropriate format. The best values of the a...The Atomic Mass Evaluation （AME） is created by collecting all possible experimental data from available literatures, and examining them carefully and compiling them in an appropriate format. The best values of the atomic masses and their uncertainties are extracted by the least-square fit method. The provided atomic mass table has been using as the reference source of mass values in the developments of all mass models and the experiments of all mass measurements展开更多
With the completion of the strategic vision of building a moderately prosperous society in an all-round way in 2020,China’s economic development has entered a new normal.The concept of innovative,coordinated,green,op...With the completion of the strategic vision of building a moderately prosperous society in an all-round way in 2020,China’s economic development has entered a new normal.The concept of innovative,coordinated,green,open and shared development will lead China’s economic progress and development.However,the development of urban and rural areas and regions in China is still not coordinated,and the sudden COVID-19 outbreak has caused a serious impact on urban low-income groups.Due to the characteristics of poor employment stability,low income and single source,as well as greater family pressure of urban low-income groups,the author focuses on the influencing factors of their feelings of happiness.This paper assumes that the satisfaction degree of residents’needs is positively correlated with residents’feelings of happiness.Based on Maslow’s hierarchy of needs theory,this paper analyzes the factors that may affect the happiness of urban low-income groups in five levels,and explores the special needs and difficulties of urban low-income groups in the context of the epidemic.So as to find ways to improve the happiness of urban low-income people to provide reference.展开更多
文摘Gastrointestinal stromal tumor （GIST） is the most common mesenchymal malignancy of the gastrointestinal tract.GISTs may coexist with different types of cancer,either synchronous or metachronous （1）.Most GISTs develop in a sporadic fashion,but familial occurrence,such as neurofibromatosis and Carney-triad,has also been reported （2）.The overall frequency of second tumors in different series varied from 4.5% to 33%.The most frequent types of GIST-associated cancers were gastrointestinal carcinomas （47%）,lymphoma/leukemia （7%）,carcinomas of prostate （9%）,breast （7%）,kidney （6%）,lung （5%）,female genital tract （5%）,carcinoid tumors （3%）,soft tissue and bone sarcomas （3%）,malignant melanoma （2%） and seminoma （1%） （1,3-5）.
基金Supported by the National Natural Science Foundation of China under Grant Nos 11575036,71301012,and 11505016
文摘We study evolutionary games in two-layer networks by introducing the correlation between two layers through the C-dominance or the D-dominance. We assume that individuals play prisoner＇s dilemma game （PDG） in one layer and snowdrift game （SDG） in the other. We explore the dependences of the fraction of the strategy cooperation in different layers on the game parameter and initial conditions. The results on two-layer square lattices show that, when cooperation is the dominant strategy, initial conditions strongly influence cooperation in the PDG layer while have no impact in the SDG layer. Moreover, in contrast to the result for PDG in single-layer square lattices, the parameter regime where cooperation could be maintained expands significantly in the PDG layer. We also investigate the effects of mutation and network topology. We find that different mutation rates do not change the cooperation behaviors. Moreover, similar behaviors on cooperation could be found in two-layer random networks.
文摘The Atomic Mass Evaluation （AME） is created by collecting all possible experimental data from available literatures, and examining them carefully and compiling them in an appropriate format. The best values of the atomic masses and their uncertainties are extracted by the least-square fit method. The provided atomic mass table has been using as the reference source of mass values in the developments of all mass models and the experiments of all mass measurements
文摘With the completion of the strategic vision of building a moderately prosperous society in an all-round way in 2020,China’s economic development has entered a new normal.The concept of innovative,coordinated,green,open and shared development will lead China’s economic progress and development.However,the development of urban and rural areas and regions in China is still not coordinated,and the sudden COVID-19 outbreak has caused a serious impact on urban low-income groups.Due to the characteristics of poor employment stability,low income and single source,as well as greater family pressure of urban low-income groups,the author focuses on the influencing factors of their feelings of happiness.This paper assumes that the satisfaction degree of residents’needs is positively correlated with residents’feelings of happiness.Based on Maslow’s hierarchy of needs theory,this paper analyzes the factors that may affect the happiness of urban low-income groups in five levels,and explores the special needs and difficulties of urban low-income groups in the context of the epidemic.So as to find ways to improve the happiness of urban low-income people to provide reference.
