基于决策树方法的专利被引影响因素研究

专利引用对于专利质量评价具有重要作用。本研究基于决策树方法对可能影响专利被引的12个影响因素与专利是否被引的潜在关系进行分析。研究最终发现，专利的最早优先权年是其中影响最为显著的因素，而后依次是权利要求数量、专利权人数量、是否转让、平均引用时滞、优先权国家，而其它6个指标的影响效果并不明显

跨海集群工程节能减排关键技术研究

港珠澳大桥跨海集群工程囊括跨海桥梁、沉管隧道、离岸人工岛等多个领域。跨海集群工程由于建设期及运营期能耗巨大,国内外尚无节能减排的成套技术指导工程建设,成为制约跨海集群工程持续发展的瓶颈之一。本文依托港珠澳大桥跨海集群工程建设和运营过程,采用理论研究、数值分析及模拟测试等多种方法,开展了集群工程节能减排指标体系和长大沉管隧道通风、照明、人工岛运营节能减排关键技术研究,成果支撑了工程项目节能减排目标的实现

Novel Antifouling Technology Research: Progress and Prospects

海洋生物污损问题给海洋事业的发展带来了许多危害,传统防污技术已日渐不能满足要求,研发新型环境友好型防污剂迫在眉睫.用仿生学原理和化学生态学的方法发展新型无毒仿生防污材料和技术是解决海洋污损问题的新思路.本文综述了污损生物防除技术的发展,并重点介绍了基于化学生态学发现的仿生抗生物附着先导化合物和防污材料,展望了仿生防污技术的发展趋势

Protective Effect of Atractylodes lancea on Oxidative Injury of H9c2 Myocardial Cells

目的茅苍术水煎液和它的含药血清对H9c2该细胞的保护效果的研究。方法采用双氧水制造H9c2大鼠心肌细胞的氧化损伤模型,以Vc为阳性对照,通过对受损心肌细胞形态学观测、SOD活力检测及细胞相对凋亡情况的检测,测定茅苍术水煎液和它的含药血清对H9c2细胞的保护效果。结果不同浓度的茅苍术水煎液均使细胞生长状态得以改善,外部形态明显好转。高剂量组细胞生长较好,中剂量组次之,低剂量组较差;茅苍术水煎液组LDH释放量和MDA含量明显低于Vc对照组,SOD活力明显高于损伤组;细胞的相对存活率随着茅苍术水提液的浓度升高而明显增大,分别为72.37%、66.19%、55.44%,低剂量组的茅苍术水提液对H2O2损伤的H9c2心肌细胞的保护作用不明显。结论茅苍术水提液的保护作用机制与增强细胞抗氧化能力、减少自由基和脂质过氧化物导致的细胞膜损伤有关。Objective To investigate the protective activity of Atractylodes lancea decoction and its medicated serum on H9c2 cell.Methods The H2O2-based oxidative injury model was established by cultivating rat cardiomyocytes of H9c2 in vitro,and the antioxidant activity was evaluated by cell morphology,apoptosis and the effect on SOD.Results The growth state of the cells could be improved by the decoction of the different concentrations of Atractylodes lancea,and the external form was significantly improved.The high dose group cells grew well,and the low dose group was poor.The release amount of LDH and MDA of Atractylodes lancea group were significantly lower than those of the Vc control group,SOD activity was significantly higher than that in the injury group,the relative survival rate of cells with the concentration of aqueous extract of Atractylodes lancea obviously increased,it was 72.37%,66.19% and 55.44%,respectively.The protective effect of the aqueous extract of the low dose group on the H2O2 damage of H9c2 myocardial cells was not significant.Conclusion The mechanism of protective effect of water extract of Atractylodes lancea liquid is related to enhancing cellular antioxidant capacity and cell membrane damage caused by reducing free radicals and lipid peroxide

Towards Chinese Misunderstandings in Cross-Cultural Communication—The Case of American-Speaking People Communicating with Chinese People in Chinese Discourses

误解是社会语言学、话语分析、会话分析、语用学、认知语言学、跨文化交际等多学科研究的焦点问题之一。其中，在跨文化交际研究领域内，不少学者都探讨了西方人和东亚人（特别是中国人）之间用英语进行跨文化交际时所发生的误解问题。不难想见，这与英语作为国际语言，在跨文化交际中担负着常用交际工具的职责密不可分。但事实上，随着中国国力的日益提升，汉语文化国际影响逐渐深远，我们更需要关注的是跨文化、跨语言交际中的汉语话语误解问题，特别是在目前相关实证研究和系统研究都极为缺乏的情况下。为此，本文试图对“汉语非第一语言的人”在同中国人用汉语进行交际时所出现的误解问题进行较为全面的、深入的理论和应用研究。 为了使研究...Misunderstanding has been the focus of examination by many studies from sociolinguistics, discourse analysis, conversation analysis, pragmatics, cognitive linguistics, cross-cultural communication, and so on. Among them, the studies in cross-cultural communication have placed emphasis on the misunderstandings between Westerners and East Asians (particularly including Chinese people) communicating ...学位：文学博士院系专业：人文学院中文系_汉语言文字学学号：1022010015385