The Internet provides us a lot of online services. Under the conventional single-server architectures, remote users must register separately on each visited server to obtain the required services. In contrast, with a multi-server architecture, users can freely access subscribed services from multiple servers by registering at a single registration center (RC). Currently, biometrics are widely applied in user authentication schemes to improve their security. Combining with biometric authentication techniques, we present an anonymous authentication scheme by using Chebyshev chaotic map to achieve authentication of both communicating parties in multi-server scenario. The core point of this new scheme is the use of chaotic mapping to achieve mutual authentication instead of time-consuming authentication methods, thus leading to higher efficiency. Based on the widely used Real-Or-Random(ROR) model and the Proverif tool, we perform a formal security analysis of the proposed scheme. In addition, the comparison of security attributes and performance with other related works indicates that the new scheme can withstand various attacks and better suited to multi-server application scenarios.

许多高中历史教师在教学中发现,学生对中国史的部分更为熟悉、更有兴趣,与之相反,学生对世界史的内容充满了隔膜感,有部分学生也因此对之提不起兴趣.从文化人类学的角度来看,中国教师和学生在世界史教学和学习中因为不同种族、不同发展历史而最终呈现出的世界观、价值观、思维方式和叙事话语等方面的差异而对异文化产生隔膜感.这种隔膜感会使教师和学生在文化心态上很难用恰当的立场和态度去审视异文化民族的历史,也会使他们很难把握异质文化的精神实质,更会因为不能从整体上把握其精神实质而在具体历史问题的认知和评价上出现偏差甚至错误.

本文重点介绍了基于B/S模式的水利工程进度管理系统的设计和主要功能,并针对进度计划子功能,探讨了CPM计算的原理,从前端开发技术角度入手,深入分析和梳理了前推法、后推法、自由时差、总时差的计算过程,为代码层面实现CPM计算提供了参考思路.

75岁的张老伯身体硬朗,精神很好.体格检查可见全身散在多数的红斑、硬肿及苔藓样斑块面积较大.我开始询问他的现病史和既往史,不管是初次发病的时间、可能的诱因、采取的治疗手段,还是日常的保养方式,他都记得很清楚,回答起来井井有条. 讲完多年的患病经历后,张老伯感慨道:"10年了,我可是被这个病折磨够了,恨不得立刻就能康复.我去很多医院看过,也尝试过很多种治疗方法,但它总是反复发作.说实话,对于治好这个病,我已经几乎没有信心了."

In a real uniformly convex and q-uniformly smooth Banach space, a new iterative algorithm is devised for approximating a zero point of the sum of countable accretive-type mappings. The zero point also solves generalized variational inequalities. The highlight of this paper is the framework of the space. The application to capillarity systems is also considered.

基于内隐领导理论,对比研究了谦逊领导和威权领导风格对新生代员工的主动行为与顺从行为的影响效应,并探讨了积极追随和消极追随在其中发挥的中介作用.通过对多行业的共60个团队的领导—员工配对问卷调查,研究发现:(1)谦逊领导对新生代员工的主动行为有显著的正向影响,而威权领导对新生代员工的顺从行为影响不显著.(2)谦逊领导会激发新生代员工的积极追随,进而间接影响新生代员工的主动行为,积极追随在谦逊领导和新生代员工的主动行为之间起到显著的中介作用.(3)威权领导对消极追随的影响是正向的,而消极追随对新生代员工顺从行为的影响却是负向的,消极追随遮掩了威权领导对新生代员工的顺从行为的直接作用,进而产生遮掩效应.

电商企业需对大数据价值和功能精准定位,围绕数据集成、数据处理、数据安全核心内容,形成新的工作思路.电商企业对管理模式的创新,一要精细化管理和个性化服务双向推进;二要着重客户群体消费喜好和等级划分;三要线上销售和营销与线下体验相混合;四要全面推行和实施数据产品服务模式.

本文立足"课程思政"理论,以《高等学校课程思政建设指导纲要》为依托,调查分析高职院校数学中人文素养教育现状(以重庆市为例),基于高职院校人文素养为出发点,探索"课程思政"视角下高职院校数学教学中的人文素养教育,建构高职院校高等数学教育教学中的人文素养体系及培育途径,为高职院校培养合格性人才提供新思路.

Some new forward–backward multi-choice iterative algorithms with superposition perturbations are presented in a real Hilbert space for approximating common solution of monotone inclusions and variational inequalities. Some new ideas of constructing iterative elements can be found and strong convergence theorems are proved under mild restrictions, which extend and complement some already existing work.

● 语文智慧课堂总体设计 智慧课堂分层作业数据的统计可以帮助教师掌握每一个学生的学习动态.智慧课堂把电子书包课堂模式带入语文阅读课中,丰富了语文教学模式,也拓宽了学习者的阅读渠道.智慧课堂通过情境感知、数据挖掘等方式可以超前预知学习者潜在的学习需求,实现教师与学生、学生与学生之间的立体化沟通与交流.智慧课堂更有利于精准教学和学生的个性化学习(如图1).

互联网的发展和普及,推动了各行各业的改革和创新,也对传统电商产生重要影响.了解"互联网+"时代的电子商务,能得知"互联网+"时代的电子商务发展趋势,并为电子商务发展提出一系列意见,希望能以此完善我国经济发展格局,使我国核心竞争力增强.

村级公益性资产管理工作是农村资产管理的重要组成部分,是在实施乡村振兴战略下发展农村经济的重要基础,对保障农民权益、搞活农村集体经济有重要意义.以汉中市为例,在对村级公益事业建设财政奖补形成的资产进行全面清理清查的基础上,深入剖析村级公益性资产管理存在问题,并提出加强村级公益性资产管理的制度建设、组织建设,建立完善的监督机制等针对性建议,探索更适宜各地农村实际的村级公益性资产管理发展路径,为农村集体经济资产保值增值保驾护航.

We propose and analyze a new iterative scheme with inertial items to approximate a common zero point of two countable d-accretive mappings in the framework of a real uniformly smooth and uniformly convex Banach space. We prove some strong convergence theorems by employing some new techniques compared to the previous corresponding studies. We give some numerical examples to illustrate the effectiveness of the main iterative scheme and present an example of curvature systems to emphasize the importance of the study of d-accretive mappings.

South China presents an excellent opportunity to build a phylogeographic paradigm for complex geological history, including mountain lifting, climate change, and river capture/reversal events. The phylogeography of cyprinids, particularly Opsariichthys hainanensis, an endemic species restricted to South China, was examined to explore the relationship between the populations in Red River, Hainan Island and its adjacent mainland China. A total of 37 haplotypes were genotyped for the mitochondrial cytochrome b (Cyt b) gene in 115 specimens from 11 river systems. Relatively high levels of haplotype diversity (h = 0.946) and low levels of nucleotide diversity (pi = 0.014) were detected in O. hainanensis. Four major phylogenetic haplotype groups revealed a relationship between phylogeny and geography. Our results found that (i) the ancestral populations of O. hainanensis were distributed south of the Wuzhishan and Yinggeling mountains, including the Changhua River on Hainan Island, and then spread to the surrounding areas, (ii) the admixtures within lineages occurred between the Red River in North Vietnam and the Changhua River in western Hainan Island and (iii) indicated that the exposure of straits and shelves under water retreat, provides opportunities for population dispersion during glaciations.

In this paper, some new modified inertial-type multi-choice CQ-algorithms for approximating common fixed point of countable weakly relatively non-expansive mappings are presented in a real uniformly convex and uniformly smooth Banach space. New proof techniques are used to prove strong convergence theorems, which extend some previous work. The connection and application to maximal monotone operators are demonstrated. Numerical experiments are conducted to illustrate that the rate of convergence is accelerated compared to some previous ones for some special cases.

New shrinking iterative algorithms for approximating common zeros of two infinite families of maximal monotone operators in a real uniformly convex and uniformly smooth Banach space are designed. Two steps of multiple choices can be made in the new iterative algorithms, two groups of interactive containment sets $C_{n}$ and $Q_{n}$ are constructed and computational errors are considered, which are different from the previous ones. Strong convergence theorems are proved under mild assumptions and some new proof techniques can be found. Computational experiments for some special cases are conducted to show the effectiveness of the iterative algorithms and meanwhile some inequalities are proved to guarantee the strong convergence. Moreover, the applications of the abstract results on convex minimization problems and variational inequalities are exemplified.

从目标、措施、总体设计思路几方面详细阐述海南省中医馆健康信息平台建设,指出该平台有助于提升基层中医药服务能力,促进发挥中医药特色优势,实现信息共享与互联互通.

课堂教学质量是高职学校核心竞争力的体现,本研究选取中国和美国社区学院典型院校课堂教学质量评价体系,详细分析了课堂教学质量评价体系的结构、各评分点差异点,从中得出两者之间的差异性.总结出对我国高职院校教学评价的启示,从而使教学评价体系得到更进一步的完善发展,指导教师不断提高教学质量,进而促进学生掌握知识能力,进一步促使我国各高职院校能够做出有效的教育制度革新.

. A new shrinking iterative scheme is studied for common zeros of a countable family of m-d-accretive mappings. Strong convergence theorems are obtained in a real Banach space. Moreover, the applications to capillarity systems are considered to support m-d-accretive mappings.

In this paper, iterative algorithms for common zero points of an infinite family of d-accretive mappings are designed. Strong convergence theorems are proved in a real uniformly convex and uniformly smooth Banach space. Applications to elliptic systems and parabolic systems with p-Laplacian and curvature systems with the Neumann boundary value are provided to support our main results.