The main advantages of role-based access control （RBAC） are able to support the well-known security principles and roles＇inheritance. But for there remains a lack of specific definition and the necessary formalizat...The main advantages of role-based access control （RBAC） are able to support the well-known security principles and roles＇inheritance. But for there remains a lack of specific definition and the necessary formalization for RBAC, it is hard to realize RBAC in practical work. Our contribution here is to formalize the main relations of RBAC and take first step to propose concepts of action closure and deta closure of a role, based on which we got the specification and algorithm for the least privileges of a role. We propose that roles＇ inheritance should consist of inheritance of actions and inheritance of data, and then we got the inheritance of privileges among roles, which can also be supported by existing exploit tools.展开更多
Whether or not there is inherited basis for prostate cancer aggressiveness is not clear, but advances in DNA analysis should provide an answer to this question in the very near future.
At the invitation of the Chinese Association for International Understanding(CAFIU),a delegation headed by Mr.Kurt Beck,President of FriedrichEbert-Stiftung(FES),visited China from 17 to 20,October 2013.As his first v...At the invitation of the Chinese Association for International Understanding(CAFIU),a delegation headed by Mr.Kurt Beck,President of FriedrichEbert-Stiftung(FES),visited China from 17 to 20,October 2013.As his first visit to China since taking the office of FES President,President Beck aimed at keeping abreast of China’s political,economic and social development since the 18th National Congress of the CPC as well as renewing the Memorandum of Understanding between CAFIU and FES.展开更多
BACKGROUND Idiopathic basal ganglia calcification(IBGC)is a neurodegenerative disease characterized by symmetrical calcification of basal ganglia and other brain region,also known as Fahr’s disease.It can be sporadic...BACKGROUND Idiopathic basal ganglia calcification(IBGC)is a neurodegenerative disease characterized by symmetrical calcification of basal ganglia and other brain region,also known as Fahr’s disease.It can be sporadic or familial,and there is no definite etiology at present.With the development of neuroimaging,the number of reports of IBGC has increased in recent years.However,due to its hidden onset,diverse clinical manifestations,and low incidence,it is likely to be misdiagnosed or ignored by potential patients and their family.CASE SUMMARY We report a case of a 61-year-old man who presented with symptoms of dysphagia and alalia.His computed tomography scan of the brain revealed bilateral symmetric calcifications of basal ganglia,cerebellum,thalamus,and periventricular area.The genetic test showed a new mutation sites of MYORG,c.1438T>G mutation and c.1271_1272 TGGTGCGC insertion mutation.He was finally diagnosed with IBGC.CONCLUSION It is important to detect MYORG mutation when IBGC is suspected,especially in those without an obvious family history,for better understanding of the underlying mechanism and identifying potential treatments.展开更多
In September,the season when the osmanthus blossoms,the Tang Xianzu Drama Festival and International Drama Exchange Month was held in Fuzhou,Jiangxi province,hometown of the famous 16th century Chinese dramatist.On Se...In September,the season when the osmanthus blossoms,the Tang Xianzu Drama Festival and International Drama Exchange Month was held in Fuzhou,Jiangxi province,hometown of the famous 16th century Chinese dramatist.On Sept 5,Chinese and foreign scholars and guests gathered in Fuzhou from all over the world to attend the second Cultural Inheritance and In-展开更多
基金Supported by the National Natural Science Foun-dation of China (60403027)
文摘The main advantages of role-based access control （RBAC） are able to support the well-known security principles and roles＇inheritance. But for there remains a lack of specific definition and the necessary formalization for RBAC, it is hard to realize RBAC in practical work. Our contribution here is to formalize the main relations of RBAC and take first step to propose concepts of action closure and deta closure of a role, based on which we got the specification and algorithm for the least privileges of a role. We propose that roles＇ inheritance should consist of inheritance of actions and inheritance of data, and then we got the inheritance of privileges among roles, which can also be supported by existing exploit tools.
文摘Whether or not there is inherited basis for prostate cancer aggressiveness is not clear, but advances in DNA analysis should provide an answer to this question in the very near future.
文摘At the invitation of the Chinese Association for International Understanding(CAFIU),a delegation headed by Mr.Kurt Beck,President of FriedrichEbert-Stiftung(FES),visited China from 17 to 20,October 2013.As his first visit to China since taking the office of FES President,President Beck aimed at keeping abreast of China’s political,economic and social development since the 18th National Congress of the CPC as well as renewing the Memorandum of Understanding between CAFIU and FES.
基金National Key R&D Program of China,No.2018YFC1312900。
文摘BACKGROUND Idiopathic basal ganglia calcification(IBGC)is a neurodegenerative disease characterized by symmetrical calcification of basal ganglia and other brain region,also known as Fahr’s disease.It can be sporadic or familial,and there is no definite etiology at present.With the development of neuroimaging,the number of reports of IBGC has increased in recent years.However,due to its hidden onset,diverse clinical manifestations,and low incidence,it is likely to be misdiagnosed or ignored by potential patients and their family.CASE SUMMARY We report a case of a 61-year-old man who presented with symptoms of dysphagia and alalia.His computed tomography scan of the brain revealed bilateral symmetric calcifications of basal ganglia,cerebellum,thalamus,and periventricular area.The genetic test showed a new mutation sites of MYORG,c.1438T>G mutation and c.1271_1272 TGGTGCGC insertion mutation.He was finally diagnosed with IBGC.CONCLUSION It is important to detect MYORG mutation when IBGC is suspected,especially in those without an obvious family history,for better understanding of the underlying mechanism and identifying potential treatments.
文摘In September,the season when the osmanthus blossoms,the Tang Xianzu Drama Festival and International Drama Exchange Month was held in Fuzhou,Jiangxi province,hometown of the famous 16th century Chinese dramatist.On Sept 5,Chinese and foreign scholars and guests gathered in Fuzhou from all over the world to attend the second Cultural Inheritance and In-
