Extension of Subjective Logic for Time-Related Trust

To describe the dynamic propcrty of trust relationship, wt propose atime-related trust model and extend Joang's subjective logic to fit for time-related trust model.The extension includes prepositional conjunction, disjunction and negation for traditional logic anddiscounting and consensus operators that are evidential operators specially designed for thepropagation and computation of trust relationships. With the extension of subjective logic fortime-related trust, our time-related trust modelis suitable to model the dynamic trust relationshipin practice. Finally an example of reputation assessment is offered to demonstrate the usage of ourtrust model.

Comparison of time-related electrical properties of PN junctions and Schottky diodes for Zn O-based betavoltaic batteries

Schottky diodes and PN junctions were utilized as energy converting structures in ZnO-based betavoltaic batteries,in which 0.101121 Ci 63Ni was selected as the beta source.The time-related electrical properties were obtained using Monte Carlo simulations.For the n-type ZnO,the Pt/ZnO Schottky diode had the highest energy conversion efficiency,and the Ni/ZnO Schottky diode had the largest Isc.The overall electrical performance of PN junctions is better than that of Schottky diodes.The lifetimes of Pt/ZnO and Ni/ZnO are longer than for other Schottky devices,coming close to those of PN junctions.Considering that Schottky diodes are easier to fabricate and independent of p-type semiconductors,Pt/ZnO and Ni/ZnO diodes offer alternatives to PN-junction-based betavoltaic batteries.

Analysis of a mutualism model with time-related coefficients in a stochastic environment

In this paper,a mutualism model with stochastic perturbations is considered and some of its coefficients are related to time.Under some assumptions,we make efforts to prove the existence and uniqueness of a positive solution,and the asymptotic behavior to the problem is discussed.Furthermore,we also prove the properties of stochtistic boundedness,uniform continuity and stochastic permanence of this system.At last,some numerical simulations are introduced to illustrate our main results.

外部信息刺激对群体创新绩效的影响

外部信息刺激对群体创新造成的影响,既包括内容干涉的作用,也包括过程干涉的作用。这是因为向群体提供外部信息时,必然会影响群体正常的研讨过程。但是,目前关于群体研讨外部信息支持的研究,只关注了内容干涉的影响,忽略了过程干涉的影响。以认知网络理论和解释水平理论为基础,提出了外部信息刺激的相关性(内容干涉)和刺激时机(过程干涉)如何影响群体研讨气氛、主意创新性以及感知易用性的研究模型。实验结果表明,提供相关刺激比提供无关刺激更能活跃研讨气氛,也更有利于提高用户的感知易用性。但是主意的创新性与外部刺激的相关性无关,只与外部刺激的提供方式有关。研讨过程中的任何刺激(不管刺激的相关性如何),对于提高群体的创新性都有正向作用。

炉温预报系统中参数滞后时间的研究

对炉温判断、预报及操作指导系统中的参数的确定及影响炉温滞后时间进行了研究。结合实例,采用非线性回归方法对各参数与炉温相关性进行了分析,并在采样周期方面进行不同尝试,通过计算机仿真,与经验数据进行了比较。

炉温预报系统中参数滞后时间的相关性分析

采用非线性回归方法分析在炉温判断、预报及操作指导系统中参数的确定及影响炉温的滞后时间,结合实际讨论在炉温判断中各参数与炉温的相关性,并在采样周期方面进行了不同尝试,仿真结果与经验数据比较达到了较好地吻合.

大学生专业兴趣的形成机制:专业选择、社会支持和学业投入的长期影响

本研究考察了大一至大三期间大学生社会支持(同伴关系、寻求教师帮助)和学业投入水平(批判性思维、时间和学习环境管理)的变化趋势及其对大三时专业兴趣水平的预测作用。633名大一学生(男生305名,女生328名)参加了为期3年的追踪调查。潜变量线性增长模型的分析结果显示,大学生入学时的专业选择意愿与所学专业的匹配度对专业兴趣水平有显著的预测作用。在控制专业选择的影响之后,批判性思维和时间与学习环境管理的斜率以及批判性思维在大一时的起始水平对专业兴趣有显著的积极影响;寻求教师帮助对专业兴趣有显著的即时影响,但长期影响不显著。