◇◇新语丝(www.xys.org)(xys.dxiong.com)(xys.3322.org)(xys.xlogit.com)◇◇ 且看西北工业大学应用数学研究所所长徐伟教授如何带领博士生炮制SCI论文   作者: 风云   近两年可说是西北工业大学应用数学研究所所长徐伟教授的创作高峰期。根 据西北大学网页 (http://campus.nwpu.edu.cn/netc/introduction/lead/xuwei/discourse.htm) 上的资料,单2005年一年,徐教授带领众多博士生已经发表的论文就有34篇之多, 2006年刚刚开始,已经发表的和正在印刷的论文亦达到26篇。徐教授乃非线性动 力学之数学家也,我非此领域专家,本无资格在此评头品足,然而偶然发现,上 述论文中至少有三篇竟如出一辙,乃决定公布于众,请大家评论。我无暇仔细阅 读其他文章,但由论文题目与作者或可断定其他论文之水分也,请关心者察之。   这三篇论文是(以网页资料的命名方法名之):   [06-01] Zhongkui Sun, Wei Xu and Xiaoli Yang Effect of random noise on chaotic motion of a particle in a phi6 potential, Chaos, Solitons & Fractals, Volume 27, Issue 1, January 2006, Pages 127-138 (SCI : 000232094700016 ) (EI: 05309265095 )   [06-03] Xiaoli Yang, Wei Xu and Zhongkui Sun Effect of bounded noise on the chaotic motion of a Duffing Van der pol oscillator in a phi6 potential, Chaos, Solitons & Fractals, Volume 27, Issue 3, February 2006, Pages 778-788(SCI : 000232193700020 ) (EI: 05339295518 )   [05-07] Xiaoli Yang, Wei Xu , Zhongkui Sun and Tong Fang Effect of bounded noise on chaotic motion of a triple-well potential system, Chaos, Solitons & Fractals, Volume 25, Issue 2, July 2005, Pages 415-424 (SCI : 000228606500019 )   单看论文摘要,就知它们至少是亲戚关系,现摘录如下。   惊人的还在后边。互相对照之后容易发现,三篇论文实乃同一方法不同参数 之作,并且连文字都大段相同(完全相同),如有不同,也是类似于上述摘要之 不同也。至于图形,亦相当类似,参数不同尔。统而言之,文字相同之处不下十 之七八。如此构思,何其妙哉!   此三篇作品,相互之间不加引用,而作者顺序都不相同,通讯作者及第二作 者都是徐伟,其余孙中奎、杨晓丽为其博士生,而[05-07]还多一作者方同,不 知何人也。   还有一特点应当指出,上述论文乃至徐氏所发其他英文论文,大多数载于 Chaos, Solitons & Fractals,何也?SCI杂志也。可见SCI杂志也刊登垃圾也, 只不知此杂志的审稿、编辑程序如何,怎么会相隔如此之近而在同一杂志上出现 如此之文章?呜呼!Elsevier之名毁矣。再去Chaos, Solitons & Fractals网页 访查,莫非徐伟乃其编委耶?幸未看到徐伟之名,但意外之余竟然发现著名的何 吉欢博士乃Chaos, Solitons & Fractals之中国地区负责人也。何氏,著名人物 也,有兴趣者可上网搜索其逸事,吾只知其为中国发文章之杰,徐氏断不能比者 也。   最后,请注意,这三篇论文都受中国自然科学基金资助,基金号为10472091, 10332030。却不知基金会知晓被骗否?   [06-01] The chaotic behaviors of a particle in a triple well phi6 potential possessing both homoclinic and heteroclinic orbits under harmonic and Gaussian white noise excitations are discussed in detail. Following Melnikov theory, conditions for the existence of transverse intersection on the surface of homoclinic or heteroclinic orbits for triple potential well case are derived, which are complemented by the numerical simulations from which we show the bifurcation surfaces and the fractality of the basins of attraction. The results reveal that the threshold amplitude of harmonic excitation for onset of chaos will move downwards as the noise intensity increases, which is further verified by the top Lyapunov exponents of the original system. Thus the larger the noise intensity results in the more possible chaotic domain in parameter space. The effect of noise on Poincare maps is also investigated.   [06-03] This paper investigates the chaotic behavior of an extended Duffing Van der pol oscillator in a phi6 potential under additive harmonic and bounded noise excitations for a specific parameter choice. From Melnikov theorem, we obtain the conditions for the existence of homoclinic or heteroclinic bifurcation in the case of the phi6 potential is bounded, which are complemented by the numerical simulations from which we illustrate the bifurcation surfaces and the fractality of the basins of attraction. The results show that the threshold amplitude of bounded noise for onset of chaos will move upwards as the noise intensity increases, which is further validated by the top Lyapunov exponents of the original system. Thus the larger the noise intensity results in the less possible chaotic domain in parameter space. The effect of bounded noise on Poincare maps is also investigated.   [05-07] The chaotic behavior of Duffing oscillator possessing both homoclinic and heteroclinic orbits and subjected to harmonic and bounded noise excitations is investigated. By means of the random Melnikov technique together with associated mean-square criterion, necessary conditions for onset of chaos resulting from homoclinic or heteroclinic bifurcation are derived semi-analytically. The results reveal that for larger noise intensity the threshold amplitude of bounded noise for onset of chaos will move upward as the noise intensity increases, which is further verified by the top Lyapunov exponents of the system. Thus the larger the noise intensity results in the less possible chaotic domain in parameter space. The effects of bounded noise on Poincare maps of the system responses are also discussed, together with the numerical simulation of the top Lyapunov exponents. (XYS20060210) ◇◇新语丝(www.xys.org)(xys.dxiong.com)(xys.3322.org)(xys.xlogit.com)◇◇