In this paper the sufficient conditions are obtained for oscillation of neutral nonlinearhyperbolic equations with doubled variable coefficients. These results are illustrated bysome examples.
A new common phrase scoring method is proposed according to term frequency-inverse document frequency （TFIDF） and independence of the phrase. Combining the two properties can help identify more reasonable common phr...A new common phrase scoring method is proposed according to term frequency-inverse document frequency （TFIDF） and independence of the phrase. Combining the two properties can help identify more reasonable common phrases, which improve the accuracy of clustering. Also, the equation to measure the in-dependence of a phrase is proposed in this paper. The new algorithm which improves suffix tree clustering algorithm （STC） is named as improved suffix tree clustering （ISTC）. To validate the proposed algorithm, a prototype system is implemented and used to cluster several groups of web search results obtained from Google search engine. Experimental results show that the improved algorithm offers higher accuracy than traditional suffix tree clustering.展开更多
Comparison and oscillation theorems which relate to the oscillatory behaviors among the members of a class of 'advanced type' difference equations are derived. Among others, these theorems show that oscillati...Comparison and oscillation theorems which relate to the oscillatory behaviors among the members of a class of 'advanced type' difference equations are derived. Among others, these theorems show that oscillation criteria for the standard second order linear difference equation can be applied to these equations. Oscillation criterion for a nonlinear advanced type difference equation is also derived as an application.AMS 1991 Subject classification: 39A10展开更多
Under the assumption that the forcing function of a neutral delay difference equation is exponentially decaying, we find sufficient conditions for all solutions of this equation to be exponentially decaying. Applicati...Under the assumption that the forcing function of a neutral delay difference equation is exponentially decaying, we find sufficient conditions for all solutions of this equation to be exponentially decaying. Applications of our results are obtained for a class of parabolic type partial difference equations.展开更多
These instructions are guidelines for preparing papers for Journal of Additive Manufacturing Frontiers(CJEE:AMF).The length of your paper are at least 7 pages(The review length should be more than 10 pages).Please do ...These instructions are guidelines for preparing papers for Journal of Additive Manufacturing Frontiers(CJEE:AMF).The length of your paper are at least 7 pages(The review length should be more than 10 pages).Please do not be less than these limitations.Use this document as a template if you are using Word 2013 or later.Or,use this document as an instruction set.The manuscript of yours will be formatted further at Format-ting guidelines.(Note:Abstract should include all key elements like background,objective,methods,results,and conclusions.Define all symbols used in the abstract.Do not cite references,nor use formulas,figures and tables in the abstract.).展开更多
文摘In this paper the sufficient conditions are obtained for oscillation of neutral nonlinearhyperbolic equations with doubled variable coefficients. These results are illustrated bysome examples.
基金Foundation item: Supported by the National Natural Science Foundation of China (60503020, 60503033, 60703086)Opening Foundation of Jiangsu Key Laboratory of Computer Information Processing Technology in Soochow Uni-versity (KJS0714)+1 种基金Research Foundation of Nanjing University of Posts and Telecommunications (NY207052, NY207082)National Natural Science Foundation of Jiangsu (BK2006094).
文摘A new common phrase scoring method is proposed according to term frequency-inverse document frequency （TFIDF） and independence of the phrase. Combining the two properties can help identify more reasonable common phrases, which improve the accuracy of clustering. Also, the equation to measure the in-dependence of a phrase is proposed in this paper. The new algorithm which improves suffix tree clustering algorithm （STC） is named as improved suffix tree clustering （ISTC）. To validate the proposed algorithm, a prototype system is implemented and used to cluster several groups of web search results obtained from Google search engine. Experimental results show that the improved algorithm offers higher accuracy than traditional suffix tree clustering.
文摘Comparison and oscillation theorems which relate to the oscillatory behaviors among the members of a class of 'advanced type' difference equations are derived. Among others, these theorems show that oscillation criteria for the standard second order linear difference equation can be applied to these equations. Oscillation criterion for a nonlinear advanced type difference equation is also derived as an application.AMS 1991 Subject classification: 39A10
文摘Under the assumption that the forcing function of a neutral delay difference equation is exponentially decaying, we find sufficient conditions for all solutions of this equation to be exponentially decaying. Applications of our results are obtained for a class of parabolic type partial difference equations.
文摘These instructions are guidelines for preparing papers for Journal of Additive Manufacturing Frontiers(CJEE:AMF).The length of your paper are at least 7 pages(The review length should be more than 10 pages).Please do not be less than these limitations.Use this document as a template if you are using Word 2013 or later.Or,use this document as an instruction set.The manuscript of yours will be formatted further at Format-ting guidelines.(Note:Abstract should include all key elements like background,objective,methods,results,and conclusions.Define all symbols used in the abstract.Do not cite references,nor use formulas,figures and tables in the abstract.).
