Design and Implementation of Student Information Management System for a University

随着计算机技术和网络技术的发展及应用，传统的手工信息管理模式已经不能适应现代学生信息管理的要求。本课题主要是结合目前高校学生的实际情况，考虑到不同的用户对学生信息管理系统的实际需求，建立一套基于B/S模式的高校学生信息管理系统。本文着重阐述学生信息管理系统的设计与开发整个流程和过程。 本系统设置了三种用户权限，不同权限内的用户拥有不同的功能：一是学生用户，能对个人信息进行修改和查询操作，并能修改登录密码，查询个人的所有档案信息；二是档案管理员，能对学生的各种档案信息进行添加、删除、修改和查询操作，其他的用户只能查看个人的档案信息，其中档案信息包括学生学术水平、学生学习能力水平、学生基本个人信...With the development and application of computer and network technology, the traditional isolated information management model has far unable to adapt to modern student information management requirements. This paper is mainly based on the actual situation of college students, taking into account the actual needs of different users of the students’ information management system, the establishment ...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201223074

Voice Identification Technology and It′s Application

声纹是生物特征的一种,对于人体来说,声纹是长期稳定的特征信号,通过声纹鉴别技术可以区分不同个体。介绍了声纹、声纹识别的概念和原理;指出了声纹识别技术的应用范围和前景。Voiceprint which is a steady signal for every person in long time is one kind of biologic characteristics. Different people can be distinguished by the voice identification technology. The concept and principles of the voiceprint and voice identification are introduced. Finally, the future and range of the application on the voiceprint identification are discussed

Taxonomic diversity of fish community in the waters surrounding the Taishan Islands of Fujian Province

根据2012年~2013年在台山列岛周边海域进行的4个航次底拖网调查资料,并结合该海域的历史资料系统整理了台山列岛周边海域鱼类总名录,使用PRIMER 5.0软件计算了该海域鱼类的分类多样性指数,研究了分类多样性指数的季节变化。结果显示,台山列岛周边海域共记录鱼类2纲20目81科150属208种,以鲈形目种类占绝对优势;2012年~2013年调查记录到鱼类2纲11目40科63属77种。台山列岛周边海域鱼类的平均分类差异指数(△~+)和分类差异变异指数(∧~+)的理论平均值分别为63.14和378.4。鱼类分类多样性指数(△)秋季最高,春、夏季次之,冬季最低;鱼类分类差异指数(△~*)秋季最高,春季次之,夏、冬季较低。研究结果表明,春季鱼类种类数最多,夏、秋季次之,冬季最少,水温和饵料决定了研究海域鱼类种类组成。According to the data collected from four seasonal trawling surveys between 2012 and 2013 in the waters surrounding the Taishan Islands,we made a list of fish species in this area and calculated its taxonomic diversity by PRIMER 5. 0. We identified 208 fish species including 2 classes,20 orders,81 families and 150 genera in the waters around Taishan Islands,with Perciformes being the major order. According to the survey data from 2012 to 2013,77 fish species including 2 classes,11 orders,40 families and 63 genera were identified. The average taxonomic distinctness( △~+) and variation in taxonomic distinctness( ∧~+) of fish species listed in that area were 63. 14 and 378. 4,respectively. The taxonomic diversity( △) and taxonomic distinctness( △~*) were higher in autumn and spring than in summer and winter. It is concluded that the species in spring was more than that in summer and autumn,and was the least in winter. Water temperature and food were the main factors which affect fish species composition.国家自然科学基金项目(41106073);; 福建省科技计划项目(2012Y0072);; 福建省海洋与渔业厅科技项目[(2012)013号

Cognitive Analysis of Misunderstandings in Listening and Speaking

In this paper, the writer tries to find out the causes for misunderstandings in listening and speaking based on some cognitive linguistic theories. By analyzing some linguistic data, the writer verifies that misunderstandings, whether intro-cultural or intercultural, may result from the wrong choice of knowledge schema, differences in knowledge scripts as well as variations in profiles.本文借助认知语言学理论解释听说交际中误解形成的认知根源。通过举例分析和论证,指出在听说交际过程中脚本选择错误、图式有异和意象的突显部分不同等,都是造成语内话语误解或语际话语误解的重要原因

水稻辐照花粉受精行为的研究

水稻辐照花粉受精行为的研究王侯聪，陈正明，陈如铭，杨觉民（厦门大学生物系，厦门）杨惠杰（福建省农科院稻麦研究所）用0、0.093、0.186和0.372kgy的￣60COy射线辐照不育系的保持系V＿20b的成熟花穗，辐照后即在不育系V＿20A（经温汤..

AN ADAPTIVE ITERATION METHOD FOR STRUCTURAL STATIC REANALYSIS of TOPOLOGICAL MODIFICATIONS

基于guyAn缩减和EPSIlOn算法,提出了结构拓扑修改静态重分析的自适应迭代方法。首先将新增加的自由度通过guyAn缩减方法凝聚到原结构自由度上,形成缩减方程。其次,根据刚度矩阵增量,利用nEuMAnn级数建立基向量,采用向量EPSIlOn算法对基向量部分和系列进行迭代加速,并给出了控制迭代收敛精度的误差计算方法,可以根据结构改变的大小自适应选择迭代次数,从而快速求出原结构自由度的位移。新增加自由度的位移可从缩减方程恢复得到。给出了一个数值算例,将该方法与组合近似法(CA)进行比较。数值计算结果表明,该方法可以根据精度要求自动选择迭代次数,且计算效率比CA方法高。Based on the Guyan reduction and epsilon algorithm, an adaptive iteration method for structural static reanalysis of topological modification is presented.In this process, the equations of the newly added degree of freedoms(DofS)(if any) are condensed to the original structure by means of Guyan reduction.And then, the basis vector is formed using Neumann serial according to the increment of the stiffness matrix, and the epsilon algorithm is used to accelerate the convergence of the partial sum of the basis vectors.An error evaluation method is introduced to control the accuracy of the iteration adaptively.A numerical example is given to compare the computational cost and approximation accuracy between the combined approximation and the presented method, the numerical results show that the present method is effective and easy to integrate into a general optimization approach.国家自然科学基金项目(50905033);中国博士后科学基金项目(20070420761);广东省自然科学基金项目(8451009001001414);广州市科技计划项目(2006Z2-D9061);广东省科技计划项目(2009B010900032);粤港招标项目(20070103-1

Study on the risk factors for intrauterine infection of hepatitis B virus among pregnant women

目的探讨厦门市孕妇乙型肝炎病毒(hepatitis B virus,HBV)感染情况和HBV宫内感染的影响因素。方法在1; 064名孕妇第一次到医院建立孕产妇保健卡时进行问卷调查并检测其血清乙肝标志物,根据检测结果选择外周血乙型肝炎表面抗原(hepatitis B; surface antigen,HBsAg)阳性的产妇179例随访至其分娩,并采集其分娩时的脐血和胎盘组织。对脐血进行HBsAg和HBV; DNA的检测,对胎盘组织进行HBsAg的检测。采用chi~2检验和非条件Logistic回归分析相关因素与HBV宫内感染的关系。结果被调查的1; 064名孕妇中,HBsAg阳性的孕妇共179名,感染率为16.8%。对179名HBsAg阳性的孕妇的脐血进行检测发现,发生HBV宫内感染的孕妇共; 34名,感染率为19.0%。孕妇HBV宫内感染的危险因素为胎盘HBsAg阳性、孕妇血清乙型肝炎E抗原(hepatitis B e; antigen,HBeAg)阳性、孕前超重,OR分别为5.123(95% CI:1.422 ~ 18.413)、4.619(95%; CI:1.225 ~ 17.534)、 3.343(95% CI:1.233 ~; 9.092)。结论对于HBsAg和HBeAg双阳性的超重/肥胖孕妇,其新生儿可能发生HBV宫内感染,应加强自身防护措施,合理规避HBV宫内感染风; 险。Objective To investigate the prevalence of hepatitis B virus (HBV); infection in pregnant women and the risk factors for Intrauterine; infection of HBV among pregnant women in Xiamen. Methods Total 1 064; pregnant women were included in this study. A questionnaire was; performed to collect the general information of the subjects and HBV; infection status was tested on the first day when they came to the; hospital. Then HBsAg positive pregnant women were selected and followed; until delivery. We collected their cord blood and placenta tissue when; they delivery. HBsAg and HBV DNA in cord blood and HBsAg in placental; tissue were detected. Chi-square test and the non-conditional Logistic; regression analysis were conducted to investigate the correlation; between HBV intrauterine infection and risk factors. Results 179 out of; the 1 064 pregnant women were HBsAg positive. The infection rate was; 16.8%. 34 out of 179 HBsAg positive pregnant women were found; intrauterine transmission with a rate of 19.0%. The risk factors for the; occurrence of HBV intrauterine transmission were placenta HBsAg positive; (OR = 5.123, 95% CI:1.422-18.413),mothers with hepatitis B e; antigen(HBeAg) positive (OR = 4.619, 95% CI:1.225-17.534) and; overweight(OR = 3.343, 95% CI:1.233-9.092), respectively. Conclusions; Placenta HBsAg positive,mothers with HBeAg positive and overweight are; independent risk factors for the occurrence of HBV intrauterine; transmission.国家自然科学基金; 厦门市科技计划项

Design of cross-layer security for wireless sensor network's

无线传感器网络(WSNs)发展迅速,可广泛应用于军事、工业及科学等领域。传感器网络在无线信道中工作,其节点有限的能源、计算能力、存储能力使得其面临着严重的安全问题。已提出的许多安全方法都基于分层设计的概念。分析了分层安全设计的局限性,回顾了现存的W SNs的安全设计方案,提出了一些新的跨层解决办法,并指出了传感器网络中跨层安全的研究方向。Wireless sensor networks(WSNs) are developing rapidly,it will be employed in a wide variety of applications ranging from military,industrial and social.Due to their constraints in computation,memory,and power resources,security is a challenge in these networks.Many security methods of WSNs based on the concept of layered-design have the limit,the state of art security design method of WSNs is overviewed,several new cross-layer solve methods are proposed,and the research direction of cross-layer design for the security of WSNs is point out.福建省自然科学基金资助项目(A00440004