This paper presents anew way to extract concept that can beused to improve text classification per-formance (precision and recall). Thecomputational measure will be dividedinto two layers. The bottom layercalled docum...This paper presents anew way to extract concept that can beused to improve text classification per-formance (precision and recall). Thecomputational measure will be dividedinto two layers. The bottom layercalled document layer is concernedwith extracting the concepts of parti-cular document and the upper layercalled category layer is with findingthe description and subject concepts ofparticular category. The relevant im-plementation algorithm that dramatic-ally decreases the search space is dis-cussed in detail. The experiment basedon real-world data collected from Info-Bank shows that the approach is supe-rior to the traditional ones.展开更多
There has been much heated discussion on College English Test for non-English majors Band 4 and Band 6 because it has exerted great influence on English teaching in Chinese universities. This essay is intended to expl...There has been much heated discussion on College English Test for non-English majors Band 4 and Band 6 because it has exerted great influence on English teaching in Chinese universities. This essay is intended to explore the reliability, validity,practicality and washback of this large-scale test by focusing on CET Band 4. The author of this report discusses the merits as well as some existing problems of this test and offers some suggestions at the end of the essay.展开更多
Hypertension is associated with at least 7.6 million annual deaths worldwide.While pharmacotherapy may provide good control for blood pressure,it sometimes induces adverse effects.Meanwhile,acupuncture has been used f...Hypertension is associated with at least 7.6 million annual deaths worldwide.While pharmacotherapy may provide good control for blood pressure,it sometimes induces adverse effects.Meanwhile,acupuncture has been used for the treatment of cardiovascular diseases,such as hypertension,coronary artery disease,and stroke,but its mechanisms of actions remain poorly understood.The efficacy of acupuncture depends on multiple constituent elements including acupoints,manipulation skills,and implementation programs,which are termed as acupuncture prescription.This review summarized the previous information of experimental use of acupuncture on animals including species,hypertension models,acupoints selection,acupoint location,stimulation protocols,and evaluation of effectiveness to provide useful guidance for researchers when performing acupuncture in animal experiments.展开更多
The magnetic reversal mechanism has been determined within a micromagnetic model reliably for a two-phased magnetic nanosystem, with the formulae for nucleation fields derived analytically. It is found that the nuclea...The magnetic reversal mechanism has been determined within a micromagnetic model reliably for a two-phased magnetic nanosystem, with the formulae for nucleation fields derived analytically. It is found that the nucleation field HN decreases uni- formly as the size of the soft phase Ls increases whereas it increases with the size of the hard phase Lh. The analysis shows that whilst the effect of Lh could be ignored in most cases, where the nucleation field is dominated by the Ls and the calculation could be significantly simplified, the overly simple inverse square law between Hu and the soft layer thickness Ls adopted by the previous researchers is not a good approximation. While nucleation is the beginning of the magnetic reversal, pinning is the dominant coercivity mechanism in both two-phased and single-phased magnetic materials, where the crystalline defects exist. Comparison with the experimental data confirms this conclusion, indicating that Brown＇s paradox results from the much lower effective anisotropy in both single-phased and composite materials, as speculated in the literature.展开更多
基金Project supported by the National Natural Science Foundation of China (No. 60082003) and the National High Technology Research and Development Program of China (N0.863-306-ZD03-04-1).
文摘This paper presents anew way to extract concept that can beused to improve text classification per-formance (precision and recall). Thecomputational measure will be dividedinto two layers. The bottom layercalled document layer is concernedwith extracting the concepts of parti-cular document and the upper layercalled category layer is with findingthe description and subject concepts ofparticular category. The relevant im-plementation algorithm that dramatic-ally decreases the search space is dis-cussed in detail. The experiment basedon real-world data collected from Info-Bank shows that the approach is supe-rior to the traditional ones.
文摘There has been much heated discussion on College English Test for non-English majors Band 4 and Band 6 because it has exerted great influence on English teaching in Chinese universities. This essay is intended to explore the reliability, validity,practicality and washback of this large-scale test by focusing on CET Band 4. The author of this report discusses the merits as well as some existing problems of this test and offers some suggestions at the end of the essay.
基金the National Basic Research Program of China:the Epigenetic Regulatory Mechanism of the Specificity of Acupoints(973 Program,No.2012CB518501)the National Natural Science Foundation of China:the Regulatory Mechanism of AS-Neuron Crosstalk With Energy for Promoting Synaptic Plasticity in Hippocampus Treated by Acupuncture(No.81202743)+1 种基金Deacetylation Modification in Personalized Medicine for Acupuncture-Based Weight-Loss(No.81303019)Mechanistic Study of STAT5-miR-193b Pathway in Obesity and Weight Loss by Acupuncture(No.81273838)
文摘Hypertension is associated with at least 7.6 million annual deaths worldwide.While pharmacotherapy may provide good control for blood pressure,it sometimes induces adverse effects.Meanwhile,acupuncture has been used for the treatment of cardiovascular diseases,such as hypertension,coronary artery disease,and stroke,but its mechanisms of actions remain poorly understood.The efficacy of acupuncture depends on multiple constituent elements including acupoints,manipulation skills,and implementation programs,which are termed as acupuncture prescription.This review summarized the previous information of experimental use of acupuncture on animals including species,hypertension models,acupoints selection,acupoint location,stimulation protocols,and evaluation of effectiveness to provide useful guidance for researchers when performing acupuncture in animal experiments.
基金support from the National Natural Science Foundation of China (Grant Nos. 10747007 and 11074179)the Scientific Research Foundation for the Returned Overseas Chinese Scholars, the Ministry of Education
文摘The magnetic reversal mechanism has been determined within a micromagnetic model reliably for a two-phased magnetic nanosystem, with the formulae for nucleation fields derived analytically. It is found that the nucleation field HN decreases uni- formly as the size of the soft phase Ls increases whereas it increases with the size of the hard phase Lh. The analysis shows that whilst the effect of Lh could be ignored in most cases, where the nucleation field is dominated by the Ls and the calculation could be significantly simplified, the overly simple inverse square law between Hu and the soft layer thickness Ls adopted by the previous researchers is not a good approximation. While nucleation is the beginning of the magnetic reversal, pinning is the dominant coercivity mechanism in both two-phased and single-phased magnetic materials, where the crystalline defects exist. Comparison with the experimental data confirms this conclusion, indicating that Brown＇s paradox results from the much lower effective anisotropy in both single-phased and composite materials, as speculated in the literature.
