Outage Probability Analysis for D2D-Enabled Heterogeneous Cellular Networks with Exclusion Zone:A Stochastic Geometry Approach

Interference management is one of the most important issues in the device-to-device(D2D)-enabled heterogeneous cellular networks(HetCNets)due to the coexistence of massive cellular and D2D devices in which D2D devices reuse the cellular spectrum.To alleviate the interference,an efficient interference management way is to set exclusion zones around the cellular receivers.In this paper,we adopt a stochastic geometry approach to analyze the outage probabilities of cellular and D2D users in the D2D-enabled HetCNets.The main difficulties contain three aspects:1)how to model the location randomness of base stations,cellular and D2D users in practical networks;2)how to capture the randomness and interrelation of cellular and D2D transmissions due to the existence of random exclusion zones;3)how to characterize the different types of interference and their impacts on the outage probabilities of cellular and D2D users.We then run extensive Monte-Carlo simulations which manifest that our theoretical model is very accurate.

Inclusive Education in the Context of Ethnocultural Diversity: Understanding the Process of Exclusion to Act in the School - A Secondary Publication

This paper reveals that the implementation of inclusive education is an unfinished challenge,both within the system and for individual self-improvement.This process of changing practices,by continually questioning the school’s responsibility for the(re)production of inequalities,exclusion,and unequal social relations,is riddled with obstacles,unpredictable situations,and strong emotions.In particular,the researchers point out that many systemic mechanisms of school culture contribute to replicating and reifying hierarchical school experiences and exacerbating processes of institutional discrimination against immigrant backgrounds and/or racialized students.The empirical research presented also highlights the school staff’s deficit thinking toward immigrant students and their parents.The results show that staff tend to use linguistic and cultural gaps between students and the school system to explain academic failure.Be that as it may,the researchers as well as the school actors and students interviewed in this paper suggest multiple ways to improve inclusion in the school context,stressing the importance of giving voice to the various actors in order to move toward institutional transformation.

Effects of long-term grazing exclusion on vegetation structure,soil water holding capacity,carbon and nitrogen sequestration capacity in an alpine meadow on the Tibetan Plateau

Grazing exclusion is one of the primary management practices used to restore degraded grasslands on the Tibetan Plateau.However,to date,the effects of long-term grazing exclusion measures on the process of restoring degraded alpine meadows have not been evaluated.In this study,moderately degraded plots,in which the vegetation coverage was approximately 65%and the dominant plant species was Potentilla anserina L,with grazing exclusion for 2 to 23 years,were selected in alpine meadows of Haibei in Qinghai-Tibet Plateau.Plant coverage,plant height,biomass,soil bulk density,saturated water content,soil organic carbon(SOC)and total nitrogen(TN)were evaluated.The results were as follows:(1)With aboveground biomass and total saturated water content at 0-40 cm depth,the average SOC and TN contents in moderately degraded alpine meadows increased as a power function,and the plant height increased as a log function.(2)The average soil bulk density at 0-40 cm depth first decreased and then increased with increasing grazing exclusion duration,and the minimum value of 0.90 g·cm^(-3) was reached at 15.23 years.The plant coverage,total belowground biomass at 0-40 cm depth,total aboveground and belowground biomass first increased and then decreased,their maximum values(80.49%,2452.92g·m^(-2),2891.06 g·m^(-2))were reached at 9.41,9.46 and 10.25 years,respectively.Long-term grazing exclusion is apparently harmful for the sustainable restoration of degraded alpine meadows.The optimal duration of grazing exclusion for the restoration of moderately degraded alpine meadows was 10 years.This research suggests that moderate disturbance should be allowed in moderately degraded alpine meadows after 10years of grazing exclusion.

Invariant measures for the strong-facilitated exclusion process

Consider a generalized model of the facilitated exclusion process, which is a onedimensional exclusion process with a dynamical constraint that prevents the particle at site x from jumping to x+1 (or x-1) if the sites x-1, x-2 (or x+1, x+2) are empty. It is nongradient and lacks invariant measures of product form. The purpose of this paper is to identify the invariant measures and to show that they satisfy both exponential decay of correlations and equivalence of ensembles. These properties will play a pivotal role in deriving the hydrodynamic limit.

Symmetry phases of asymmetric simple exclusion processes on two lanes with an intersection

This paper studies two-lane asymmetric simple exclusion processes(ASEPs)with an intersection.In the upstream segments of the intersection,one particle can move to the next site with rate 1 if the site is empty,and the other particle can move forward with rate p in the sites of downstream segments.The parameter p can represent the rate of slowing of motion,and the parameter is introduced to investigate spontaneous symmetry breaking(SSB)phenomenon.Extensive Monte Carlo simulations are carried out.It is shown that three symmetric phases exist and the SSB does not exist in the system.Simple mean field approach in which correlation of sites is ignored is firstly adopted to analyze the system,and the system is divided into four independent segments.It is found that the analytical results deviate from the simulation ones,especially when p is small.In addition,the inexsitence of SSB can only be explained qualitatively.Motivated by this,we carry out the cluster mean field analysis in which correlation of five sites is considered.It is shown that densities of the two upstream segments are equal,which demonstrates that the SSB does not exist.It is also shown that,as expected,the cluster mean field analysis performs much better than the simple mean field analysis.

Quantum correlation enhanced bound of the information exclusion principle

We investigate the information exclusion principle for multiple measurements with assistance of multiple quantum memories that are well bounded by the upper and lower bounds.The lower bound depends on the observables'complementarity and the complementarity of uncertainty whilst the upper bound includes the complementarity of the observables,quantum discord,and quantum condition entropy.In quantum measurement processing,there exists a relationship between the complementarity of uncertainty and the complementarity of information.In addition,based on the information exclusion principle the complementarity of uncertainty and the shareability of quantum discord can exist as an essential factor to enhance the bounds of each other in the presence of quantum memory.

Meissner Exclusion of Gravito-Magnetic Energy from a Momentum-Space Crystal

A primordial field theory of Quantum Gravity resolves a number of century-old paradoxes associated with general relativity and quantum mechanics. It allows re-interpretation of major experiments such as Michelson-Gale (1925) and Q-bounce (1999). I address herein an unexplained anomalous experiment by Martin Tajmar (2006), in terms of a gravitomagnetic-based Meissner effect.

数字金融发展缓解了家庭金融排斥吗? 基于中国家庭金融调查(CHFS)数据的分析

借助中国家庭金融调查(CHFS)2013、2015、2017、2019年四轮调查数据,探讨数字金融发展对中国家庭金融排斥的影响。研究发现:无论从静态还是动态来看,数字金融发展都显著降低了家庭金融排斥;从排斥类型看,数字金融发展对家庭资产端和借贷端金融排斥均具有显著的缓解作用,并且对家庭资产端的影响更大。进一步,从不同的家庭类型来看,数字金融发展对农村、中西部、三四线城市以及银行业等传统金融相对落后地区家庭金融排斥的缓解作用更明显。

2009—2022年广州地区保密性弃血情况调查

目的对广州地区保密性弃血情况进行调查分析,为保障血液安全提供科学依据。方法对2009—2022年广州地区保密性弃血献血人次、献血者人群特征、保密性弃血原因和献血后回告时间进行统计分析。结果2009—2022年广州地区保密性弃血回告率为0.0062%(260/4170984),各年间的保密性弃血回告率有差异(P<0.05);2009—2022年保密性弃血回告率在性别和职业方面无差异(P>0.05),在献血年龄、献血次数、文化程度和婚姻状态方面有差异(P<0.05),其中18~30岁献血者(0.0073%)和首次献血者(0.0108%)是保密性弃血的主要人群。高危性行为(28.46%,74/260)是保密性弃血的首要原因,保密性弃血回告时间高峰期在献血后72 h内,其中献血后24~72 h回告要求保密性弃血的人次(68.46%,178/260)占比最高。结论保密性弃血是保障血液安全非常重要的措施,在献血者招募过程应重点对18~30岁献血者和首次献血者进行详细的献血前健康征询,排除高危献血者,同时强化保密性弃血回告及方法途径指引宣传,做好保密性弃血原因登记和分类工作,从源头筛选出合格、低风险的无偿献血者,保障血液安全。

以家庭为中心的产科监护结合待产-分娩-产后护理一体化的产房护理模式对初产妇妊娠结局的影响

目的探讨以家庭为中心的产科监护(family-centered maternity care,FCMC)结合待产-分娩-产后护理(labor-delivery-recovery,LDR)一体化的产房护理模式对初产妇妊娠结局的影响。方法选取2021年10月-2022年3月在郑州人民医院东部院区家庭化产房住院分娩的248例初产妇为观察组,给予FCMC+LDR产房护理模式。选取同期在产科普通病房住院分娩的300例初产妇为对照组,行传统护理。比较2组分娩方式、新生儿结局、纯母乳喂养情况、母亲角色适应能力及住院分娩总费用。结果观察组自然分娩率、母亲角色适应能力评分、分娩30 d纯母乳喂养率、住院分娩总费用均高于对照组(χ^(2)=10.861,P=0.001;t=-8.173,P<0.001;χ^(2)=5.156,P=0.023;t=-26.720,P<0.001);2组宫内窘迫发生率、新生儿1 min和5 min Apgar评分比较,差异均无统计学意义(P>0.05)。结论FCMC+LDR产房护理模式能够提高初产妇的自然分娩率和纯母乳喂养率,促进初产妇对母亲角色的适应,但其住院分娩费用较高。

公交专用车道规划管理思辨及公共汽电车交通发展纾困

2023年上半年,公安部推出10项公安交管新措施,其中包括优化城市公交专用车道管理。北京、深圳、青岛、南通等地陆续发布公交专用车道相关管理措施,引发广泛讨论与关注。围绕公交专用车道管理措施背后的原因与调整的依据,公交专用车道本身的规划、管理与使用问题,以及公共汽电车交通运营困境,特邀城市交通行业专家学者和公共汽电车运营管理研究的一线工作人员以笔谈的形式交流观点。在此基础上,探索在城市存量发展阶段如何建立常态化路权变更规则和评估机制,以及公共汽电车交通纾困之路。

模仿产品竞争威胁下供应链独家采购合作研究

为了探究模仿产品竞争背景下品牌制造商与零售商能否达成独家采购合作,构建原创品牌制造商、模仿者和零售商三方组成的两阶段Stackelberg博弈模型;对比了零售商引入模仿产品对其自身及品牌商利润的影响;求解了品牌商折扣让利情形下品牌商与零售商达成独家采购合作的边界条件。研究结果表明:1)不考虑品牌商的折扣让利时,零售商引入模仿产品总是会提升自身利润,降低品牌商利润,但是品牌商的创新产品需求量会逆势增加;2)当零售商担任博弈领导者时,如果品牌商愿意给予零售商一定批发价格折扣,品牌商与零售商都能从独家采购合作中实现帕累托改进,该折扣水平阈值与模仿产品质量、品牌商忠实消费者比例相关;3)品牌商担任博弈领导者时,品牌商与零售商并不能从独家采购合作中实现帕累托改进。

流动儿童社会排斥、自尊、亲子依恋与抑郁的关系:一项追踪研究

目的:为探讨流动儿童社会排斥、自尊、亲子依恋与抑郁的动态关系。方法:以班级为单位对385名流动儿童进行为期一年的纵向追踪调查。采用协方差结构方程模型对前、后两次4个研究变量间的动态关系进行检验。结果:控制年龄和性别作用后显示:①流动儿童前测社会排斥可以预测其后测抑郁水平(β=0.12,P<0.01);②流动儿童前测自尊在社会排斥对抑郁的即时和延时预测中均起部分中介作用,中介效应值分别是0.11和0.03;③流动儿童前测亲子依恋在其前测社会排斥影响后测抑郁的中介路径前半段中起延时调节作用,调节效应值为-0.12。结论:①社会排斥可以预测流动儿童的抑郁水平;②自尊在社会排斥和流动儿童抑郁中起即时和延时中介作用;③亲子依恋能够延时调节流动儿童社会排斥与自尊的关系。

于都客家话复数标记的叠加

于都桥头话人称代词有三个复数标记“人”“各罗”“各”“人”置于第一人称代词单数“我”后构成包括式复数形式“我人”。“各罗/各”可置于“我人”后,构成复数标记叠加形式“我人各罗/各”,其为包括式的,产生机制主要是感染错合,类推也可能有影响。复数标记叠加现象主要报告于山西诸方言,也见于一些客家方言,桥头话复数标记叠加现象是包括式和排除式复数标记的叠加,因而具有独特性。桥头话复数标记“人”可能由近代汉语中“吾人”的“人”重新分析而来,“各罗”“各”则可能分别由处所指示代词“该啦”“该”演变而来。

巴西排日运动与1934年《百分之二限额法案》的颁布

1931年日本悍然发动了“九一八”事变,其帝国主义侵略行径遭到巴西的抵制,同时也引发了巴西国内针对日侨群体的猜疑和排斥。在巴西民族主义的语境下,“黄祸论”“不易被同化论”等种族主义论调频繁出现,针对日本移民的扩张阴谋论流行开来。1933年年底,限制外来移民的宪法修正案提案引发了巴西国内排日派和挺日派的激烈争论。1934年5月24日,巴西国会通过了《百分之二限额法案》,并将其列入《1934年宪法》,这是近代以来巴西第一次对所有外来移民采取限制措施,也是首次将限制移民入境写进宪法,确立了国籍来源的移民配额制度。作为20世纪30年代初增长最为迅猛的外来移民群体,日本移民受该法案的冲击最大。对此,日本政府积极打经贸亲善牌,开启了“棉花换移民”外交,以缓和改善日巴关系;而日本媒体和巴西日侨对该法案的颁布表示强烈不满,他们用实际行动反击排日言论。该法案对日本在巴西的投资置地和移民活动都产生了消极影响。

论数字音乐专有许可权的“法定许可”限制

数字音乐专有许可权缺乏限制引发了数字音乐市场中一系列问题,究其根源在于传统环境下建立的录音制品法定许可制度不能适用于数字环境之中。对录音制品法定许可作扩大解释,将其适用的对象扩展到数字音乐作品,并将“制作”一词解释为包含通过信息网络进行传播的行为。从版权法本身对数字音乐专有许可权进行“法定许可”限制,对解决音乐平台垄断问题和促进数字音乐市场良性发展均有重要意义。

“低技能排斥”下的劳动力跨地区流动——产出效应与收入分配

在中国劳动力跨地区流动过程中,地方政府针对不同技能的劳动力制定了差异化的就业政策,不少地区基于缓解公共服务供需矛盾等方面的考虑,对低技能劳动力采取了排斥的态度。本文在量化空间一般均衡模型框架下刻画了高、低技能劳动力差异化的流动特征,使用2005年、2015年全国人口抽样调查微观数据,定量分析了“低技能排斥”下劳动力跨地区流动对收入分配的影响及产出效应。研究发现,第一,与高技能劳动力相比,低技能劳动力流动所面临的阻碍更大,使得低技能劳动力跨地区流动成本高于高技能劳动力。第二,“低技能排斥”下的劳动力跨地区流动,一定程度上抑制了高、低技能劳动力之间的技能互补,造成GDP损失。第三,全面破除“低技能排斥”,充分发挥高、低技能劳动力之间的技能互补性,将显著缩小地区之间劳动力的收入差距。因此,打破劳动力跨地区流动中的技能歧视,引导高、低技能劳动力畅通有序流动,优化劳动力配置效率的同时还有助于共同富裕战略目标的实现。

职场灵性对员工亲组织非伦理行为的影响

员工实施亲组织非伦理行为,并非是出于利己或者报复动机,而是为了实现组织利益。通过在北京和山西等地开展问卷调查,探讨职场灵性对员工亲组织非伦理行为的作用机制。在两个不同的时间节点收集到427份有效问卷,实证结果表明:职场灵性正向影响员工亲组织非伦理行为,工作满意度起着完全中介作用;职场排斥正向调节工作满意度对亲组织非伦理行为的影响,还正向调节工作满意度在职场灵性与员工亲组织非伦理行为之间的中介作用。

专属经济区航行自由适当顾及义务的履行研究

专属经济区航行自由适当顾及义务对平衡沿海国和其他国家海洋权利、实现海洋的充分利用具有重要意义。但是,适当顾及义务的内涵模糊,其基本要求和履行形式并不明确。实践中,沿海国基于污染防控对航行自由的限制程度不同,其他国家在沿海国专属经济区实施军事活动是否违反适当顾及义务存在争议,不同国家对适当顾及义务履行形式的规定也不一致。适当顾及义务的理论共识和实践规律表明,遵守国际法和沿海国法律、不得危害沿海国和平与安全、尊重沿海国为行使专属经济区权利而采取的管理措施是专属经济区航行自由适当顾及义务的基本要求。专属经济区航行自由适当顾及义务的履行可细化为分析航行涉及的沿海国权益、判断航行是否影响沿海国权益、事先与沿海国沟通协商、采取必要的合理措施避免侵害沿海国合法权益等步骤。

非独创性企业数据确权模式的反思与重构

在辩证吸收对非独创性企业数据(以下简称“企业数据”)确权模式学说已有研究的基础上,提出完善企业数据产权制度的具体方案,以服务于数据要素市场的发展。企业数据确权应当结合要素产权理论,跳出传统法律以“物”或“智力成果”为参照的判断逻辑,从数据要素化的视角看待企业数据确权问题,以数据产权作为“元概念”,并结合行业现状和企业数据的价值释放规律推导出分级分类的确权模式。具体而言,可将企业数据分为原始数据和衍生数据。原始数据利益交织、价值有限,产权结构难以配置,应适用责任规则,采取行为规制为主的多元保护模式,以激励数据流通。衍生数据价值较高且权属易于分割,应适用财产规则,明确企业享有持有、加工、使用、经营等权利,以激励数据创造。