Study on RFID Authentication Protocol Theory

Secure and private authentication protocol is important in Radio Frequency Identification (RFID) technology.To date,researchers have proposed many RFID authentication protocols.However,these protocols have many flaws due to lack of theoretical support in designing these protocols.In this work,first we present the security and privacy requirements in RFID authentication protocols.Then we examine related works and point out problems in designing RFID authentication protocols.To solve these problems,we propose and briefly prove three theorems.We also give necessary examples for better understanding these theorems with concrete protocols.At last,we give our suggestions on designing secure and private authentication protocols.The security and privacy requirements,theorems,and suggestions will facilitate better understanding and designing of RFID authentication protocols in the future.

A Novel Resource Allocation Method in Ultra-Dense Network Based on Noncooperation Game Theory

In ultra-dense networks(UDNs), large-scale deployment of femto base stations is an important technique for improving the network throughput and quality of service(QoS). In this paper, a multidimensional resource allocation algorithm based on noncooperation game theory is proposed to manage the resource allocation in UDNs, including transmission point association, user channels, and power. The algorithm derives a multidimensional resource optimization model and converts into a noncooperation game model according to the analysis of transmission point association user channel and power allocation. The algorithm includes two phases: transmission point association, and channel and power allocation. Then, feasible domain and discrete variables relaxation approaches are introduced to derive an approximate optimal multidimensional resource allocation solution with low complexity. Simulation results show that this method has some advantages in suppressing interference and improves the overall system throughput, while ensuring the QoS of femtocell users.

Cracking the Snake Detection Theory: The Subcortical Visual Pathway as a Major Player in Cultural Transformations

According to the proposed hypothesis, graphic characters trigger the subcortical visual route. The reaction discussed is very weak. Yet, its very existence has an unusual importance: characters and (occluded) venomous snakeskin patterns reveal themselves as conflatable. Furthermore, following tractogra- phic research, a functional segregation of the subcortical pathway is to be presupposed. Thus, there can’t be a later dissociation of two stimuli previously associated. The outcomes of lecture will gradually appear probabilistically (much) more peaceful than encountering a venomous snake, though, and thus a continuous lessening of the reaction is expectable. Here, on one hand, it is relevant that the subcortical visual pathway goes to the amygdala. The reactions we describe tap into goal-oriented processes, and they will do that unfettered. On the other hand, in the case of characters, since the beginning, fear has been converted into appetition to a great degree. This process should be fostered in the presence of light. In this way, luminosity might become a conditioned stimulus for attraction. In this case, a Pavlovian addiction for light will foster, yet also—from the point of view of reward feeling—counterbalance the lessening of the stimulation elicited by characters. The addiction we refer to is one towards light accompanied by graphic signs. Yet, as opposed to the case of the luminous medium, the attention captured by the later ones taken for themselves is continuously reduced.

An improved correlation of the pressure drop in stenotic vessels using Lorentz's reciprocal theorem

A mathematical model of the human cardiovascu lar system in conjunction with an accurate lumped model for a stenosis can provide better insights into the pressure wave propagation at pathological conditions. In this study, a the oretical relation between pressure drop and flow rate based on Lorentz＇s reciprocal theorem is derived, which offers an identity to describe the relevance of the geometry and the convective momentum transport to the drag force. A voxel based simulator VFLOW VOF3D, where the vessel geome try is expressed by using volume of fluid （VOF） functions, is employed to find the flow distribution in an idealized steno sis vessel and the identity was validated numerically. It is revealed from the correlation flow in a stenosis vessel can that the pressure drop of NS be decomposed into a linear term caused by Stokes flow with the same boundary condi tions, and two nonlinear terms. Furthermore, the linear term for the pressure drop of Stokes flow can be summarized as a correlation by using a modified equation of lubrication the ory, which gives favorable results compared to the numerical ones. The contribution of the nonlinear terms to the pressure drop was analyzed numerically, and it is found that geomet ric shape and momentum transport are the primary factors for the enhancement of drag force. This work paves a way to simulate the blood flow and pressure propagation under dif ferent stenosis conditions by using 1D mathematical model.

Benchmark solutions for sound propagation in an ideal wedge

Sound propagation in a wedge-shaped waveguide with perfectly reflecting boundaries is one of the few range- dependent problems with an analytical solution, and hence provides an ideal benchmark for a full two-way solution to the wave equation. An analytical solution for the sound propagation in an ideal wedge with a pressure-release bottom was presented by Buckingham and Tolstoy [Buckingham and Tolstoy 1990 J. Acoust. Soc. Am. 87 1511]. The ideal wedge problem with a rigid bottom is also of great importance in underwater acoustics. We present an analytical solution to the ideal wedge problem with a perfectly reflecting bottom, either rigid or pressure-release, which may be used to provide a means for investigating the sound field in depth-varying channels, and to establish the accuracy of numerical propagation models. Closed-form expressions for coupling matrices are also provided for the ideal waveguides characterized by a ho- mogeneous water column bounded by perfectly reflecting boundaries. A comparison between the analytical solution and the numerical solution recently proposed by Luo et al. [Luo W Y, Yang C M and Zhang R H 2012 Chin. Phys. Lett. 29 014302] is also presented, through which the accuracy of this numerical model is illustrated.

On the Transformation of the Traditional “Blood Revenge” in the “Red Literary Classics”

The writers of the"red literary classics"replace the Confucian tradition of the blood relation with the modern"class struggle theory",so the class attribute becomes the one and only standard for value evaluation,under which the modern "class revolution"is quite different from the traditional blood revenge,taking on the expansion of the revenge object,the simplification of the revenge method,ennobling of the revenge motivation and the legalization of the revenge means and so on.

Solutions of the D-dimensional Schrdinger equation with Killingbeck potential:Lie algebraic approach

Algebraic solutions of the D-dimensional Schrodinger equation with Killingbeck potential are investigated using the Lie algebraic approach within the framework of quasi-exact solvability. The spectrum and wavefunctions of the system are reported and the allowed values of the potential parameters are obtained through the sl（2） algebraization.

中国东部陆相断陷盆地页岩油开发理论认识与技术实践——以济阳页岩油为例

以济阳页岩油为代表的中国东部陆相断陷盆地页岩油取得产能突破,但埋藏深、厚度大、成熟度低,地层温度高、压力大,原油流动能力差的特点,使其实现高产稳产面临巨大挑战。基于万米岩心及90余口水平井生产实践,深化发展了“储-缝-压”三元储渗理论,以此为指导形成了页岩油开发甜点立体评价、立体开发优化设计、立体均衡压裂等济阳页岩油开发关键技术体系。理论研究和实践表明:孔隙和多尺度、多类型发育的微缝组成“双储”系统,控制着储集空间及油气富集规律,是高产稳产的物质基础;支撑缝与激活缝耦合形成跨纳米-厘米尺度的“双缝”系统,具有梯级启动特征,是高产稳产的渗流路径;地层保压性好的前提下,压裂增能可有效提高孔缝的渗流能力、增加渗吸置换效率,同时精细控压实现能场协同耦合,可进一步释放页岩油藏产能,保压增压“双压”协同是高产稳产的能量保障;以三元储渗理论为指导形成的开发关键技术体系为多洼陷多层系产能突破提供了有效的技术支撑,对促进中国东部陆相断陷盆地页岩油规模效益开发具有重要意义。

Oxygen Molecule Activation on Single-Atom Catalysts with Cu, Ag, and Au: A Cluster Model Study

(M = Au, Ag, Cu;n= 1, 2, 3) clusters were used as a cluster model to study the activation of oxygen molecules on single-atom catalysts. Structures of clusters were studied by density functional calculations with global optimization. For each n, the most stable structures are quite similar for different metal types, and the oxygen molecule prefers to be adsorbed onto M atoms. It is found that the activation degree of oxygen is higher on clusters with non-noble metal Cu than that of Ag or Au containing clusters, by comparing the changes of O-O bond length and vibrational frequency, natural charge population analysis, Fuzzy bond order analysis, and energy barriers of O2 dissociation. CO oxidation was used as a probe reaction to study the reactivity of Cu-containing clusters, and it is found that the reactivity decreases with the increase of the size of silicon-oxygen clusters. Our results give a new aspect to understand the reaction mechanism of non-precious metal single-atom catalyst for oxygen activation with high efficiency.

胜利油田水驱开发技术进展及发展方向

水驱油藏是中国东部老油田开发的主体,经过长期注水开发已整体进入特高含水期,室内研究及矿场实践表明,仍有大幅度提高采收率的潜力,但受储层非均质性和开发动态非均质性影响,科学开发和效益开发难度加大,亟需攻关进一步提高采收率技术。整装油藏针对特高含水后期极端耗水严重、效益稳产及水驱提高采收率难等问题,深化了极端耗水层带理论,创新形成了层系近阻重组开发技术、特高含水油藏矢量开发技术和特高含水后期流场调整开发技术,实现了控耗水、降递减,平均采收率为43.7%;断块油藏针对断层多、断块小的特点及特高含水期剩余油规模小、动用难的问题,深化剩余油富集规律及水动力调控机制认识,创新形成了人工边水驱、立体开发等主导开发技术系列,提高了储量控制和水驱动用程度,平均采收率为29.4%,支撑了断块油藏效益稳产;低渗透油藏针对储层物性差、有效建驱难等问题,持续开展非线性渗流机理和压驱开发机理研究,攻关配套开发技术,不断拓宽开发界限,创新形成特低渗透油藏仿水平井注水、一般低渗透油藏井网适配提高采收率、低渗透-致密油藏压驱注水等差异开发技术系列,平均采收率为15.7%,实现了低渗透油藏提速提效开发。通过以上技术进步,实现了特高含水期水驱油藏的效益开发。结合不同类型油藏开发特点及面临形势,对水驱油藏进一步提高采收率提出了下步发展方向。

Modeling Cyber Loss Severity Using a Spliced Regression Distribution with Mixture Components

Cyber losses in terms of number of records breached under cyber incidents commonly feature a significant portion of zeros, specific characteristics of mid-range losses and large losses, which make it hard to model the whole range of the losses using a standard loss distribution. We tackle this modeling problem by proposing a three-component spliced regression model that can simultaneously model zeros, moderate and large losses and consider heterogeneous effects in mixture components. To apply our proposed model to Privacy Right Clearinghouse (PRC) data breach chronology, we segment geographical groups using unsupervised cluster analysis, and utilize a covariate-dependent probability to model zero losses, finite mixture distributions for moderate body and an extreme value distribution for large losses capturing the heavy-tailed nature of the loss data. Parameters and coefficients are estimated using the Expectation-Maximization (EM) algorithm. Combining with our frequency model (generalized linear mixed model) for data breaches, aggregate loss distributions are investigated and applications on cyber insurance pricing and risk management are discussed.

以四重目标理论为指导同质化管理急诊跨科收治患者的效果评价

目的以四重目标理论为指导实施急诊患者跨科收治同质化护理管理并进行应用效果评价。方法法成立研究小组,开展急诊跨科同质化管理培训及管理。选取2022年1月一6月于杭州市某三级甲等医院急诊跨科收治的患者为试验组(n=915),2021年7月一12月常规护理患者为对照组(n=917),比较两组的护理质量安全指标(全院急救紧急呼叫系统启动、快速反应小组启动、给药错误、坠床跌倒、压力性损伤例数)以及效率指标(首次开具医属时间、平均住院日、患者和医生对护士的满意度)。结果与对照组相比,试验组紧急呼叫系统启动率、快速反应小组启动率、给药错误、坠床跌倒、压力性损伤例数均下降;首次开具医瞩时间缩短(P<0.001);相近病种平均住院日显著下降(P=0.003);患者及医生对护士满意度均显著增高(P<0.001)。结论应用四重目标关键因素建立的急诊患者跨科收治同质化护理管方法,有助于改善护士对患者的安全管理及效率管理,同时提高急诊跨科患者及主管医生对护士的满意度。

新时代素质教育舞蹈课的理论支撑

素质教育舞蹈课与建构主义学习及教学理论相融合,展现了其在美育浸润行动中推进立德树人目标的潜力。建构主义对动态知识的理解,与原生性舞蹈教育的知识观不谋而合,这一共识进一步引导了学习观和学生观的革新,推动舞蹈教育普及化,确保每位学生都能参与并成为学习过程的核心,从而强化他们的艺术核心素养。在此理论框架下,教材构建与教学实践中自然融入了支架式、抛锚式、情境式等多元化教学方法,使得深层的思政与德育内容能够借助艺术形式,潜移默化地渗透给学生。建构主义这一革命性理论,在与我国素质教育舞蹈课的结合中,同样彰显出改革创新的意义。

行政审判中信赖保护原则的位阶化适用——一种理论转换视角下的本土化尝试

信赖保护原则是一项德式公法原则,采用三要件的适用规则,并为我国所引入。但司法实践中信赖利益生成模式出现分化,致使信赖表现作为构成要件存疑,而理论上的争议无法为法院提供可遵循的适用规则。通过分析信赖保护原则的法理基础和价值核心,认为其适用逻辑具有位阶性特点且应将信赖利益贯彻原则适用的全过程。基于此,尝试将位阶性理论引入信赖保护原则,将适用过程位阶化,依序分为信赖生成阶层、信赖正当阶层及信赖衡量阶层。相较于要件化适用模型,位阶化适用模型优先审查信赖利益在客观维度的存在意义,强调法院在原则适用中的综合性考量,为信赖保护理论发展提供包容性空间。无论是德国行政规范建构与我国的差别,还是英国合法预期在中国的模糊前景,都注定了中国必须建立起自身的信赖保护话语体系,但这无疑是一个逐步探索的过程。

以“虚实三态理论”构建急危重症中医辨治体系

急危重症病种多样、患者病情危重、证候复杂、变化迅速,有其固有的疾病演变规律。本文提出,中医辨证不同于中医内科学辨证体系,姜良铎教授、刘清泉教授依据多年治疗急危重症的临床经验概括其核心病机为“正气虚于一时,邪气暴胜而突发”,进而总结提炼出一种适用于中医药治疗急危重症的辨治体系——“虚态-实态-虚实互存态”的“虚实三态理论”。

数字经济背景下企业社会责任信息披露、风险承担与创新投入

本文基于社会资本理论,以2007~2022年我国A股上市公司为样本,运用Heckman两阶段模型,探讨数字经济背景下,企业社会责任信息披露影响创新投入的内在机理,解释了企业风险承担能力和管理者风险承担意愿的中介作用,以及公司治理的调节效应,以拓展战略性慈善行为推动企业创新的相关研究。结果表明:社会责任信息披露促进创新投入;管理者风险承担意愿和企业风险承担水平均发挥中介作用;CEO二元性、董事会规模、管理层持股比和股权制衡度均对社会责任信息披露与创新投入的关系起促进作用。本文将社会责任信息披露的影响从伦理层面拓展到战略层面,为企业数字化战略、社会责任战略和创新战略的协同作用提供了重要启示。

糖尿病肾病中医辨证分型研究概述

近年来临床上关于糖尿病肾病(DKD)中医辨证分型和治法方药的研究涌现了多种学术观点。辨证方式主要包括根据病因病机辨证及根据临床分期辨证两种。病因病机辨证主要包括病因辨证与脏腑辨证,脏腑辨证中主要涉及脾不散精理论和心肾一体论;分期辨证则多以DKD的各种西医分期为基础。随着检验检查技术的提高,检验指标和检查结果逐渐成为辨证分型的物质基础和量化指标,DKD辨证分型涉及的检查指标主要有糖脂代谢指标、炎症因子、尿蛋白及肾功能相关指标、肾脏血流动力学指标等。参考文献82篇。

高等教育强国建设:高等教育理论研究的使命与责任

高等教育对现代化强国建设具有决定性作用,高等教育强国因此必须率先推进现代化强国建设。高等教育无论作为国家事业的重要组成,还是人才培养和知识创新的活动,都必须在理性引领下与时俱进,这赋予了高等教育理论研究不可推卸的使命与责任。在对高等教育强国概念予以定性、定量解读的基础上,从服务国家战略发展需要、应对科技革命挑战及世界地缘政治巨变的需要三方面讨论了高等教育强国建设的时代紧迫性。从高等教育发展的历史逻辑和实践逻辑两方面归纳了高等教育理论研究之于高等教育强国建设的重要性,提出了高等教育强国建设既要回答建设需要的理性认识与基本规律等共性问题,又要回答中国特色、服务国家战略及实践路径等个性问题,以及高等教育强国建设进程中与时俱进的时代性与本土基础上的国际化等理论与实践问题。高等教育理论刊物作为集中发表高等教育理论研究成果的主要载体,不仅负有反映高等教育理论研究成果的基本职能,还必须发挥引领高等教育理论研究尤其是引领高等教育强国建设理论研究的积极作用。基于引领高等教育强国理论研究的需要,提出了包括体现高等教育强国建设顶层设计的价值取向研究、体现高等教育强国建设理论领域的重大主题研究以及体现高等教育强国建设实践需要的具体选题研究之高等教育强国理论研究框架。

组织边界理论视域下本科层次职业教育产教融合的现实困境与突破

作为边界组织,高校、企业、政府的有形物理空间、身份意识、规章制度以及组织内部成员的特殊认知等属性,限制了本科层次职业教育产教融合的深度。组织边界理论视域下的本科层次职业教育产教融合旨在打破组织边界壁垒,实现产教深度融合。然而,物理边界的刚性化影响产教融合知识和技术交流,社会边界的模糊化影响产教融合的深度,心理边界的封闭状态削弱产教融合的文化能力。基于此,以边界跨越为指引,突破本科层次职业教育产教融合困境应重新界定组织边界并制定边界跨越规则,提升组织跨界资源汲取能力,培养边界跨越者。

基于循证理论的全程干预在肝癌经导管动脉栓塞化疗患者中的应用效果

目的目的探讨基于循证理论的全程干预在肝癌经导管动脉栓塞化疗(TACE)患者中的应用效果。方法方法根据干预方式的不同将185例行TACE治疗的肝癌患者分为对照组(n=92,常规干预)和观察组(n=93,基于循证理论的全程干预)。比较两组患者的心理状态[焦虑自评量表(SAS)和抑郁自评量表(SDS)]、疼痛程度[数字分级评分法(NRS)]、生活质量[生活质量量表(QOL)]及并发症发生情况。结果结果干预后,两组患者SAS、SDS评分均低于本组干预前,观察组患者SAS、SDS评分均低于对照组,差异均有统计学意义(P﹤0.05)。术后2、4、8 h,两组患者NRS评分均低于本组术前,观察组患者NRS评分均低于对照组,差异均有统计学意义(P﹤0.05)。干预后,两组患者QOL评分均高于本组干预前,观察组患者QOL评分高于对照组,差异均有统计学意义(P﹤0.05)。观察组患者的并发症总发生率低于对照组(P﹤0.05)。结论结论基于循证理论的全程干预应用于肝癌TACE治疗患者,可减轻疼痛程度,改善心理状态,提高生活质量,降低并发症发生率。