Design and Implementation of University Student Information Management System

学生信息管理系统是高校教学管理中一个重要的组成部份，是高校一项重要数据资源，既给学校的决策者和管理提供辅助决策，也能为直接管理学生的管理部门和人员提供方便。 由于信息里大、数据多、需更新及时，传统的人工化和纸制化管理方式对学生信息维护、更新、修改和查询，是一件繁琐的事情，且容易出错，已不能满足现代化管理的需要。所以，开发一套学生信息管理系统应运而生。 系统采用了C/S架构，采用易语言进行开发。学生信息管理系统具有系统登录、系统管理、学生信息管理、学生评测管理、学生信息查询和常用工具管理等功能。设计完成后的系统为各种管理人员提供了不同的功能。 论文共分为七部分，首先是绪论，介绍课题研究背景...Student information management system is an important component part of teaching managementand is an important data resource of colleges, which not only provides decision support for policy makers and college management, but also facilitates management departments and staff that manage student information. Because the huge amount of information and abundant data need to be updated in a timely ...学位：工程硕士院系专业：软件学院_软件工程学号：X201323004

The Influences of Occupational Stress on Job Burnout

目的:探讨企业客户服务人员工作压力、一般自我效能感与工作倦怠的关系。方法:采用问卷调查法对金融、物业、销售行业292名客户服务人员进行调查。结果:(1)工作压力与工作倦怠的玩世不恭和成就感低落2个维度显著正相关,一般自我效能感与工作倦怠的情绪衰竭、玩世不恭、成就感低落3个维度均显著负相关;(2)工作压力对女性的影响比男性大,男性的一般自我效能感显著高于女性;(3)未婚员工比已婚员工表现出更大的焦虑和忧郁,工作压力更大;(4)国有企业、民营企业、外资企业客服人员的工作压力依次增大;(5)一般自我效能感在工作压力与工作倦怠的关系中起到了中介作用。结论:工作压力越大,工作倦怠越严重,一般自我效能感在工作压力与工作倦怠的关系中起到了中介作用。Objective：To explore the relationship between occupational stress,general self-efficacy and job burnout of customer service representatives.Methods： A survey of 292 customer service representatives on the scale of occupational stress,general self-efficacy and job burnout.Results（： 1）Correlation analysis showed significantly positive correlation between occupational stress and cynicism,reduced personal accomplishment;and negative correlation between general self-efficacy and emotional exhaustion,cynicism,reduced personal accomplishment（.2）From a gender perspective,the impact of occupational stress on the females than the males,and male in general self-efficacy is significantly higher than females（.3）From a marital status perspective,unmarried representatives than married representatives to show more anxiety and depression,and unmarried representatives had more pressure（.4）Customer service representatives in State-owned enterprises,private enterprises,foreign were gradually increasing occupational stress（.5）General self-efficacy had mediation effect on the relation between occupational stress and job burnout.Conclusion： The higher the occupational stress,the more serious job burnout.General self-efficacy had mediation effect on the relation between occupational stress and job burnout

Analysis of pre-S/S gene in occult hepatitis B virus infection from blood donors in Dalian,China

目的了解大连地区无偿献血者隐匿性肝炎乙型病毒感染(ObI)的情况和PrE-S/S区基因的变异情况。方法对大连市血液中心2010年12月2日-2013年5月31日的无偿献血者血液标本进行常规ElISA(HbS Ag、抗-HCV、抗-HIV和抗-TP)和HIV/HbV/HCV联合nAT筛查,对于单独核酸检测反应性的献血者加以跟踪或回溯,结合乙型肝炎血清学标志物的试验、鉴别试验、病毒定量试验和半巢式PCr来确定ObI,同时对ObI的PrE-S/S区基因序列与对照组(HbS Ag+序列,gEnbAnk)做比对分析。结果共筛查158 232份血液标本,确定了其中的69份ObI,流行率为1∶2 293(69/158 232)。41例ObI获得PrE-S/S区基因序列:b型6例、C型34例、d型1例;与对照组相比,ObI在S区的氨基酸序列的变异明显(Pb=0.013;PC=0.003),主要变异位点为b型的V14g/A、y161f/S、V168A、P217l和C型的E2g/A/V、T118r/k/A/M、P127T/l/H/S、E164d/g、l175S、S174n。结论大连地区献血者ObI在HbV基因组S区的氨基酸序列存在多个位点的变异,这些变异与ObI的产生存在某种关系,且这种关系受基因型的影响。Objective To understand the prevalence of occult infection of hepatitis B virus(OBI) and the mutations of pre-S / S gene from blood donors in Dalian.Methods From December 2nd,2010 to May 31 st,2013,samples from blood donors in Dalian Blood Center were screened with enzyme-linked immunosorbent assay(ELISA) for HBs Ag,anti-HCV,antiHIV and anti-TP and triplex nucleic acid detection(NAT) for HIV RNA,HBV DNA and HCV RNA.A follow-up was conducted on donors who were tested negative by ELISA but reactive by NAT.OBI was determined by testing the specimens from the follow-up or archive with serological markers of hepatitis B virus,identification examinations,quantitative and semi-nested PCR.The sequences of pre-S / S gene of OBIs and the control group were analyzed(HBs Ag +,Genbank).Results158 232 blood samples were screened,69 of which were OBIs.The prevalence rate of OBIs was 1 ∶ 2 293(69 /158 232).The pre-S / S gene sequences were analyzed in forty-one cases of OBI:6 were type B,34 were type C,and 1 was type D.Comparing the amino acid sequences between the experimental and control groups,there were statistical significance in the S region of OBI(PB= 0.013;PC= 0.003).The main mutation sites of amino acids for type B were V14 G / A,Y161 F / S,V168 A and P217 L while for type C were E2 G / A / V,T118 R / K / A / M,P127 T / L / H / S,E164 D / G,L175 S and S174 N.Conclusion There were multiple mutation loci on the amino acid sequence of OBI from blood donors in Dalian.A particular relationship existed between these mutations in S region from HBV genome and the mechanism of OBI,which was influenced by genotypes.大连市科技计划指导性项目(大卫科发[2013]50号); 大连市医学重点学科优秀卫生专业技术人才培养资助项目(大卫科发[2013]383号

SARS-CoV-2 病毒感染对精子质量的影响

目的旨在探究已接种新冠疫苗的COVID-19感染后精液中SARS-CoV-2 RNA的检测情况，并分析感染恢复期不同阶段对精子质量的影响。方法于2023年1月至3月就诊安徽医科大学第一附属医院生殖医学中心既往已接种新冠疫苗且近期咽拭子（包括感染状态）SARS-CoV-2呈阳性的男性患者，留取精液样本，通过RT-qPCR方法检测精液SARS-CoV-2病毒RNA存在情况。回顾性分析COVID-19感染恢复期不同阶段对精子质量影响；通过横向比较COVID-19感染恢复＜30 d与≥30 d患者精液体积、精子浓度、精子总数、前向运动百分率、畸形率、精子DFI等指标；并进一步纵向自身对照比较未感染COVID-19与感染COVID-19恢复阶段（＜30 d与≥30 d）精液质量指标。结果在所有纳入研究的205名患者精液样本中均未检测到SARS CoV-2 RNA。此外，无论是横向比较COVID-19感染恢复期不同阶段还是纵向自身对照比较未感染COVID-19与感染COVID-19恢复阶段的精液体积、精子总数、精子畸形率、精子DFI及HDS，两组差异均无统计学意义（P＞0.05），而精子前向运动百分率下降，两组差异具有统计学意义（P＜0.05）。结论对于既往接种新冠疫苗COVID-19感染的患者，SARS-CoV-2病毒不会通过精子性传播，并且COVID-19感染恢复期30 d内弱精子症发生率可能增加，然而这种影响短期内是可逆的