动态域名解析技术及其在双出口校园网中的应用

校园网实施双出口方案后,为高校带来了高性价比的网络带宽,但也带来了一些问题,如公众网用户访问校园网资源速度慢等.针对这个问题引入动态域名解析技术,提出目前比较理想的解决方案,并在邢台学院校园网上进行应用.测试结果表明,该方案大大提高了公众网用户访问校园网的速度.     

铭文考辨两例

师簋有铭文"今敢博氒眾叚",马承源等先生读"博"为"薄",读"叚"为"暇","薄"义"迫",本文认为铭文应该断句为"今敢博氒眾,叚,反氒工吏,弗蹟我東國",而"叚"是表示语气的叹词,表示吃惊和不屑的语气,且"博"当读为"搏",其义为"捕持"."行气玉佩铭"是一篇叙述道家、内家拳术关于行气养生的铭文.铭文中的"(天)"字形、意义学者们解释众多,本文认为当释为"内",与"纳"是古今字的关系.     

从"因材施教"到"因材施学":高职教育理念的转变

从理论基础、价值取向及教育理念入手,论述高职教育因材施教的内涵,指出高职教育中的因材施教可以成为一种主导—主体相结合的因材施学。     

嵌入式Mifare卡用户身份认证系统设计

本文基于嵌入式网络终端系统,介绍了将Mifare卡的读写卡操作与嵌入式浏览器相结合,构建了一个完整的嵌入式Mifare卡用户身份认证系统,为用户在通过嵌入式终端访问网络的身份认证提供了一种安全、有效的解决方案。     

SQL注入攻击及防御策略

针对目前流行的SQL注入攻击,程序开发人员以及系统管理员需要了解并制定相应的预防及应对策略。确保服务器端数据信息的安全。试围绕SQL攻击的特点及如何防御来进行描述。     

论治安调解在构建社会主义和谐社会中的积极作用

治安调解主要是解决治安纠纷,对于情节轻微、社会危害不大的部分违反治安管理行为,通过治安调解方式解决,可以将当事人之间的纠纷止于开始阶段,减少当事人的诉讼之累,使社会关系更加和谐。治安调解工作是一项系统性的整体工程,在构建社会主义和谐社会进程中,公安机关充分运用治安调解手段化解人民内部矛盾,是回应人民新期待、满足群众新要求的现实需要,也是构建新型警民关系,更好地服务社会主义和谐社会的有效手段。针对现阶段在治安调解工作中存在的“偏左”或“偏右”的误区,在加强公安机关自身建设的同时,充分调动社会积极因素,发挥人民调解的传统优势,拓宽调解渠道,丰富调解手段是治安调解更好地服务于社会主义和谐社会的有效途径。     

Heat shock protein 90 protects rat mesenchymal stem cells against hypoxia and serum deprivation-induced apoptosis via the PI3K/Akt and ERK1/2 pathways

Mesenchymal stem cell(MSC)transplantation has shown a therapeutic potential to repair the ischemic and infracted myocardium,but the effects are limited by the apoptosis and loss of donor cells in host cardiac microenvironment.The aim of this study is to explore the cytoprotection of heat shock protein 90(Hsp90)against hypoxia and serum deprivation-induced apoptosis and the possible mechanisms in rat MSCs.Cell viability was determined by3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT)assay.Apoptosis was assessed by Hoechst 33258nuclear staining and flow cytometric analysis with annexin V/PI staining.The gene expression of Toll-like receptor-4(TLR-4)and V-erb-b2 erythroblastic leukemia viral oncogene homolog 2(ErbB2)was detected by real-time polymerase chain reaction(PCR).The protein levels of cleaved caspase-3,Bcl-2,Bcl-xL,Bax,total-ERK,phospho-ERK,totaI-Akt,phospho-Akt,and Hsp90 were detected by Western blot.The production of nitric oxide was measured by spectrophotometric assay.Hsp90 improves MSC viability and protects MSCs against apoptosis induced by serum deprivation and hypoxia.The protective role of Hsp90 not only elevates Bcl-2/Bax and Bcl-xL/Bax expression and attenuates cleaved caspase-3 expression via down-regulating membrane TLR-4 and ErbB2 receptors and then activating their downstream PI3K/Akt and ERK1/2 pathways,but also enhances the paracrine effect of MSCs.These findings demonstrated a novel and effective treatment strategy against MSC apoptosis in cell transplantation.     

Pancreatic somatostatinoma with obscure inhibitory syndrome and mixed pathological pattern

Somatostatinoma is a very rare neuroendocrine tumor that originates from D cells and accounts for less than 1% of all gastrointestinal endocrine tumors. The duodenum is the most frequent site for this tumor, followed by the pancreas. We here describe a 46-year-old Chinese woman who developed pancreatic somatostatinoma presenting with the characteristic “inhibitory” syndrome, but the symptoms were obscure and seemingly uncorrelated. This case is also unique for its large tumor size and mixed pathological pattern. Distal pancreatectomy was performed, and the patient has remained well since operation. As the syndromes of somatostatinoma may be obscure and atypical, clinicians should review all clinical findings to obtain an accurate diagnosis. Aggressive surgery is preferred to improve the survival.     

金融危机对河北省出口贸易影响的分析

美国次贷危机给美国及世界经济带来了极大的冲击与影响,让人们不得不在应对这场危机的同时反思1997年爆发的亚洲金融危机.分析比较两次危机对河北省出口的影响程度、出口结构、影响机制等,可从中吸取经验教训,以作前车之鉴.     

英语听力学习中的焦虑心理及其对策

听力是英语学习中的一个重要组成部分。英语学习者在听力学习过程中由于各种原因会产生焦虑。只有注重培养和运用相应的听力策略,才能克服英语(?)焦虑感,提高听力理解能力。