We discuss the dependence of competition ability on uniqueness for the general cooperation-competition networks.An empirical investigation of the 15 real world systems is made.We find that the dependence varies with t...We discuss the dependence of competition ability on uniqueness for the general cooperation-competition networks.An empirical investigation of the 15 real world systems is made.We find that the dependence varies with the change of systems.Although most of the systems show positive tendency,we find that a special system shows negative one.The relationship between the heterogeneity indexes for the distributions of competition ability and uniqueness is also discussed analytically and empirically.展开更多
Primary angiitis of the central nervous system is a rare and difficult entity. Here we represented the clinical and pathological features of a patient with little response to steroid before definite diagnosis. The 50-...Primary angiitis of the central nervous system is a rare and difficult entity. Here we represented the clinical and pathological features of a patient with little response to steroid before definite diagnosis. The 50-year-old male had a fluctuating disease course for more than 3 years. He presented visual disorders, seizure, cognitive impairment, hypersomnia, unsteady gait, dysphasia, dysphagia, and incontinence. Magnetic resonance imaging showed multiple, supratentorial and infratentorial abnormal signals, while cerebrospinal fluid and cerebral angiography were normal. Magnetic resonance spectrum showed a decrease of N-acetyl-aspartate. Brain biopsy revealed nongranulomatous lymphatic vasculitis with reactive gliosis, cicatrization, demyelination and focal hemorrhages.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 10635040,70671089 and 10705023.
文摘We discuss the dependence of competition ability on uniqueness for the general cooperation-competition networks.An empirical investigation of the 15 real world systems is made.We find that the dependence varies with the change of systems.Although most of the systems show positive tendency,we find that a special system shows negative one.The relationship between the heterogeneity indexes for the distributions of competition ability and uniqueness is also discussed analytically and empirically.
文摘Primary angiitis of the central nervous system is a rare and difficult entity. Here we represented the clinical and pathological features of a patient with little response to steroid before definite diagnosis. The 50-year-old male had a fluctuating disease course for more than 3 years. He presented visual disorders, seizure, cognitive impairment, hypersomnia, unsteady gait, dysphasia, dysphagia, and incontinence. Magnetic resonance imaging showed multiple, supratentorial and infratentorial abnormal signals, while cerebrospinal fluid and cerebral angiography were normal. Magnetic resonance spectrum showed a decrease of N-acetyl-aspartate. Brain biopsy revealed nongranulomatous lymphatic vasculitis with reactive gliosis, cicatrization, demyelination and focal hemorrhages.
