Research on the market effect of high transfer of Listed Companies in China

长期以来，股利政策都是公司金融的核心研究领域，与股利政策相关的研究一直层出不穷。本文把2010-2016年年报每10股送转10股以上符合条件的共1497家上市公司研究对象，将高送转预案公告日作为事件日，优先采用事件研究法对上市公司高送转预案公告日前后的超额收益率和累计超额收益率进行分析，找到预案公告日前后收益率的不同表现；再次，本文还研究了创业板、深证板块以及上证主板多个板块间高送转超额收益的差异情况；最后通过已有理论的分析，找到可能影响上市公司是否高送转的因素，并运用logit模型进行回归检验，提出了本文的结论以及相关建议。 结论如下： （1）对于“高送转”股票而言，在预案公布日附近，其...For a long time, the dividend policy is the core research area of corporate finance, and the research related to dividend policy has been endless. In this paper, the 2010-2016 annual report for every 10 shares for more than 10 shares to send a total of 1497 eligible listed companies research object, will send a proposal to announce the date of the event as the event day, giving priority to using e...学位：金融硕士院系专业：经济学院_金融硕士学号：1562015115289

中国上映的美国电影票房影响因素分析

本文利用2012年1月至2013年12月在中国上映的84部美国电影数据,对引进的美国电影的电影票房影响因素进行实证分析。考虑到票房分布的偏态性,本文除了运用传统的OlS回归、CHOW检验,还特地采用了非参数检验方法。结果表明票房与电影预算、消费者对电影期待值、电影质量呈正相关,而与中国首映时间与外国首映放映时间差呈负相关。最后本文随机抽取了10部2014年中国上映的美国电影票房用拟合模型进行预测

表位疫苗研究进展

表位疫苗是用抗原表位制备的疫苗,是近年来新兴的一种疫苗研制技术,也是今后最具开发前景的疫苗技术之一,在肿瘤、病毒等疾病的防治中有着自身独特的优势。详细阐述了T表位和B表位的筛选和鉴定方法、表位疫苗的载体研究及表位疫苗在肿瘤、病毒和微生物感染中的应用等,对表位疫苗的最新研究进展进行了综述

高致病性禽流感病毒H5N1中和抗体的单链抗体构建与活性鉴定

在本实验室研制出的多株针对H5N1血凝素的鼠单抗中,10F7对34株H5N1病毒株都有血凝抑制和中和活性,具有特异性高、反应性强、识别谱广的特点。通过基因工程构建10F7单链抗体(scFv)表达重组质粒,在大肠杆菌中表达并纯化scFv,经血凝抑制实验及中和实验检测其活性。结果在针对3株病毒的血凝抑制实验中,10F7scFv蛋白对其中2株H5N1病毒均显示出结合活性,而对H9毒株没有反应。在针对7株H5N1病毒的中和实验中,10F7scFv对5株病毒具有较好的中和能力。H5N1广谱中和抗体10F7的单链抗体构建,为进一步研制针对H5N1禽流感病毒的治疗性抗体奠定了基础

Video-assisted Thoracoscopic 3D Mode Operation for Solitary Pulmonary Nodules

目的探讨三维胸腔镜手术(3d VIdEO-ASSISTEd THOrACIC SurgEry,3d-VATS治疗孤立性肺结节(SOlITAry PulMOnAry nOdulE,SPn)的效果。方法回顾性分析2013年3月~2014年3月50例SPn的资料,采用3d-VATS手术模式楔形切除结节,根据快速病理结果决定是否行肺叶切除加淋巴结清扫术。统计手术时间(去除快速冰冻时间)、术后24 H引流量、总引流量、引流管拔除时间、淋巴结清扫数及术后并发症等。结果 3d-VATS模式下,50例均行肺结节楔形切除,其中23例病理为恶性,继续行肺癌根治术,手术顺利。肺癌根治术手术时间(62±12)MIn,术中出血量(35±5)Ml,清扫淋巴结(19±3)个,术后24 H引流量(120±20)Ml,术后胸管引流时间(4±1)d,术后住院时间(7±2)d。并发症3例,其中术后肺炎2例,阵发性心房纤颤1例,均治愈。无围手术期死亡。随访2~12个月,平均6.3月。1例术后3个月脑转移,1例术后5个月肺癌复发。结论胸腔镜3d模式下治疗SPn是一种新的选择方式,安全可行,值得推广应用。Objective To evaluate the effects of surgical treatment for solitary pulmonary nodules under thoracoscopic 3D mode(3D-VATS).Methods A total of 50 cases of solitary pulmonary nodules from March 2013 to March 2014 were retrospectively analyzed.Intraoperative wedge pulmonary resection with 3D-VATS was utilized.According to intraoperative pathological findings,lobectomy plus lymph node dissection was given or not.Intraoperative time( minus fast freezing time),drainage volume for 24 h,total drainage volume,drainage tube removal time,number of lymph node dissected,and postoperative complications were recorded.Results Under 3D-VATS mode,50 cases of solitary pulmonary nodules were treated with wedge resection,including 23 cases of malignant pathology receiving radical resection, which was smoothly.The radical resection time( lung lobectomy plus lymphadenectomy) was(62 ± 12) min,the bleeding volume was(35 ± 5) ml,the lymphadenectomy number was 19 ± 3,the drainage volume for 24 h was(120 ± 20) ml,the postoperative chest tube removal time was(4 ± 1) days,and the postoperative hospital stay was(7 ± 2) days.Postoperative complications occurred in 3 cases,including 2 cases of pneumonia and 1 case of paroxysmal atrial fibrillation.No perioperative deaths were observed.All the cases were followed up for 2- 12 months,with an average of 6.3 months.Brain metastases was found in 1 case at the third postoperative month and recurrence of lung cancer was noted in 1 case at the fifth postoperative month.Conclusion Thoracoscopic 3D mode treatment for solitary pulmonary nodules is a new,safe,and feasible alternative and should be widely applied

Combined Use of Thoracoscopy and Laparoscopy in Total Laryngectomy for Cervical Esophageal Carcinoma

目的探讨胸、腹腔镜联合全喉切除治疗颈段食管的可行性和疗效。方法 2009年1月~2014年7月胸、腹腔镜联合全喉切除治疗33例颈段食管癌。胸腔镜下分离食管、腹腔镜下管胃成形、全喉切除、气管永久造口、胃咽吻合术。结果胸部手术时间40~66 MIn,平均53 MIn;腹部手术时间35~51 MIn,平均44 MIn;颈部手术时间128~150 MIn,平均139 MIn。术中出血量130~270 Ml,平均150 Ml。术后住院时间8~14 d,平均12 d。病理均为鳞状细胞癌,其中高分化2例,中分化19例,中-低分化7例,低分化5例。切缘病理学检查无癌组织残留。31例淋巴结转移。并发症:吻合口漏2例,喉返神经损伤3例,肺部感染6例,胃排空障碍2例,吻合口狭窄1例,无死亡病例。33例随访1个月~5年,术后1、3、5年生存率分别为87.9%、54.5%、45.5%。结论颈段食管癌应采取积极的手术治疗,胃咽吻合术是颈段食管癌切除后较为理想的修复手段。Objective To investigate clinical feasibility and efficacy of combined use of thoracoscopy and laparoscopy in total laryngectomy for cervical esophageal carcinoma.Methods Clinical data of 33 patients with cervical esophageal carcinoma undergoing surgical treatment in our department from January 2009 to July 2014 were analyzed retrospectively.The esophagus was separated under thoracoscopy.And laparoscopic gastroplasty,total laryngectomy,tracheal permanent colostomy,and gastric pharyngeal anastomosis were performed.Results The thoracoscopic operation time was 40- 66 min( mean,53 min),the laparoscopic operation time was 35- 51 min( mean,44 min),and the cervical operation time was 128- 150 min( mean,139 min).The blood loss was 130- 270 ml( mean,150 ml).The postoperative hospital stay was 8- 14 d( mean,12 d).Pathological examinations showed squamous cell carcinoma in all the cases,including 2 cases of highly differentiated carcinoma,19 cases of moderately differentiated carcinoma,7 cases of moderately or lowly differentiated carcinoma,and 5 cases of lowly differentiated carcinoma.No residual cancer was found at cutting edges pathologically.Among the 33 cases,lymph node metastasis was found in 31 cases.Complications included 2 cases of anastomotic fistula,3 cases of recurrent laryngeal nerve injury,6 cases of pulmonary infection,2cases of delayed gastric emptying,and 1 case of anastomotic stenosis.There was no death.All the patients were followed up for 1months to 5 years.The survival rates at 1,3,and 5 postoperative year were 87.9%,54.5%,and 45.5%,respectively.Conclusions Cervical esophageal carcinoma should be surgically treated actively.Gastric pharyngeal anastomosis is an ideal option for the repair of cervical esophageal cancer resection

Electrocatalytic Oxidation of Formic Acid on Pt-Se Hollow Nanosphere Modified Glassy Carbon Electrodes

Corresponding authors. Email: [email protected],[email protected]; Tel:+86-13879159319.[中文文摘]以无定形硒溶胶为模板制备了不同硒覆盖度(θSe)(θSe=0.49,0.39,0.06,0)的Pt-Se和Pt纳米空球(分别记为(Pt-Se)HN和PtHN),发展了利用亚硫酸盐彻底除去核壳纳米粒子上Se的方法.对获得的纳米空球进行了形貌和结构的表征,结果表明所制备的(Pt-Se)HN粒径均匀,分散性好,球壳呈多孔结构.以其作为电催化剂制备了(Pt-Se)HN修饰的玻碳(GC)电极((Pt-Se)HN/GC),利用常规电化学方法比较该电极与PtHN/GC和商用碳载铂(Pt/C)修饰GC(Pt/C/GC)电极对甲酸的催化氧化作用,发现对甲酸氧化的活性顺序为(Pt-Se)HN/GC>PtHN/GC>Pt/C/GC.三种电极催化甲酸氧化的机理有所不同:前者更倾向于通过弱吸附中间体直接氧化成CO2的单途径机理进行,后两者则通过强吸附和弱吸附中间体的双途径机理进行.在一定Se覆盖度条件下,(Pt-Se)HN/GC对甲酸的氧化有助催化作用.[英文文摘]Platinum-selenium and platinum hollow nanospheres(denoted as(Pt-Se)HN and PtHN,respectively) with different coverages of Se(θSe)(θSe=0.49,0.39,0.06,0) were prepared using amorphous Se colloids as a sacrificial template.Sulfite was used to completely remove Se from the core-shell nanoparticles.The morphology and structure of the nanoparticles were characterized using various methods,which revealed a hollow structure with a very uniform size distribution and a porous structure on the shell.Assembly of Pt-Se hollow nanospheres ((Pt-Se)HN) on a glassy carbon (GC) electrode produced a (Pt-Se)HN/GC electrode. The electrocatalytic activity of the electrode for the oxidation of formic acid was compared with the PtHN/GC and commercial Pt/C/GC electrodes by cyclic voltammetry and chronoamperometry. The activity followed the order:(Pt-Se)HN/GC > PtHN/GC >Pt/C/GC. The electrooxidation of formic acid on (Pt-Se)HN/C, PtHN/C, and Pt/C catalysts follows different mechanisms: the former tends to directly oxidize formic acid to CO2 via weakly adsorbed intermediates, and the latter two via both weakly and strongly adsorbed intermediates.(Pt-Se)HN with a suitable selenium content showed optimal electrocatalytic activity for the oxidation of formic acid.国家自然科学基金(20663002); 厦门大学固体表面物理化学国家重点实验室基金(200511)资助项

一个实用的中文本地化系统的设计和实现

UNIX系统国际化要求提供一种通用功能，允许在一个系统内支持世界上各个国家和地区的语言的处理，在同一系统内可容纳多种语言字符集，并且支持各种不同文化圈的特定需求。中文信息处理，即是国际工作在中国本土的具体体现。本文按照中文本地化的需求，以SCO XENIX 2.3.4国际化版本为基准平台，讨论了中英文兼容C-XENIX系统的设计和实现。本人主要进行了如下工作：（1）提出可扩充中文信息处理系统的设计思想，不仅使操作系统具有基本的中英文兼容输入/输出能力，同时要求在系统中提供管理机制，使用户能介入系统对输入/输出管理，使系统具有更大灵活性。（2）讨论了可扩充输入/输出管理模块的设计技术和开发方法。（3）分析了在进行系统改造过程 中的关键信息流程和采取的关键措施。（4）设计和实现了汉字输入/辅出系统，完成了一个基本的中文信息处理系统