为了使研究人员能够快速、有效对手持设备的三维菜单设计进行评估,基于Fitts’定律和Hick-Hyman定律,提出了一个预测手持设备三维菜单操作绩效的模型,并用实验验证了该模型的有效性。实验分为两个阶段,第一阶段的实验是为了计算模型中...为了使研究人员能够快速、有效对手持设备的三维菜单设计进行评估,基于Fitts’定律和Hick-Hyman定律,提出了一个预测手持设备三维菜单操作绩效的模型,并用实验验证了该模型的有效性。实验分为两个阶段,第一阶段的实验是为了计算模型中的系数a1,b1,a2,b2的值,并将其用于实验第二阶段的数据分析;第二阶段的实验是为了验证模型的有效性。并结合AIC(Akaike Information Criterion)准则对该模型与其他模型进行了对比分析。实验结果表明,该模型预测得到的用户操作绩效数据与实验测试得到的绩效数据非常接近(二者相关性为0.9145),且通过AIC准则分析表明,该模型最优。因此,该模型是有效的。展开更多
One-dimensional heat equation was solved for different higher-order finite difference schemes, namely, forward time and fourth-order centered space explicit method, backward time and fourth-order centered space implic...One-dimensional heat equation was solved for different higher-order finite difference schemes, namely, forward time and fourth-order centered space explicit method, backward time and fourth-order centered space implicit method, and fourth-order implicit Crank-Nicolson finite difference method. Higher-order schemes have complexity in computing values at the neighboring points to the boundaries. It is required there a specification of the values of field variables at some points exterior to the domain. The complexity was incorporated using Hicks approximation. The convergence and stability analysis was also computed for those higher-order finite difference explicit and implicit methods in case of solving a one dimensional heat equation. The obtained numerical results were compared with exact solutions. It is found that backward time and fourth-order centered space implicit scheme along with Hicks approximation performed well over the other mentioned higher-order approaches.展开更多
一、前言 英国宗教哲学家约翰×希克(John Hick)的思想发展是一个从原来的一神信仰唯我独尊到后来的宗教多元论的转变过程,尽管如此,信仰与理性之间的对比、辩证与纠葛,是他终其一生处理的问题.这点最早反映在他在1957年出版的第一...一、前言 英国宗教哲学家约翰×希克(John Hick)的思想发展是一个从原来的一神信仰唯我独尊到后来的宗教多元论的转变过程,尽管如此,信仰与理性之间的对比、辩证与纠葛,是他终其一生处理的问题.这点最早反映在他在1957年出版的第一本专著《信仰与知识:一种对宗教知识问题的现代引论》(Faith and Knowledge:A Modern Introduction to the Problem of Religious Knowledge,以下简称《信仰与知识》)里,他的扛鼎之作《宗教之解释一人类对超越者的回应》(An nterpretation of Religion:Human Responses to the Transcendent,1984)系统地体现了这一关怀,晚年出版的《宗教与科学的新境域:宗教经验、神经科学与超越者》(The New Frontier of Religion and Science:Religious Experi-ence,Neuroscience and the Transcendent,2006)、《在信仰与怀疑之间:关于宗教与理性的对话》(Between Faith and Doubt:Dia-logues on Rehigion and Reason,2010)等著作之中亦延续了这份关怀.若细查希克在这些著作中的论述,不难发现希克所念兹在兹者,是如何论证信仰中的知识向度和人类宗教经验与其他经验之间的同构性,而笔者认为这一观点早已反映在1 957年出版的《信仰与知识》一书中.展开更多
文摘为了使研究人员能够快速、有效对手持设备的三维菜单设计进行评估,基于Fitts’定律和Hick-Hyman定律,提出了一个预测手持设备三维菜单操作绩效的模型,并用实验验证了该模型的有效性。实验分为两个阶段,第一阶段的实验是为了计算模型中的系数a1,b1,a2,b2的值,并将其用于实验第二阶段的数据分析;第二阶段的实验是为了验证模型的有效性。并结合AIC(Akaike Information Criterion)准则对该模型与其他模型进行了对比分析。实验结果表明,该模型预测得到的用户操作绩效数据与实验测试得到的绩效数据非常接近(二者相关性为0.9145),且通过AIC准则分析表明,该模型最优。因此,该模型是有效的。
文摘One-dimensional heat equation was solved for different higher-order finite difference schemes, namely, forward time and fourth-order centered space explicit method, backward time and fourth-order centered space implicit method, and fourth-order implicit Crank-Nicolson finite difference method. Higher-order schemes have complexity in computing values at the neighboring points to the boundaries. It is required there a specification of the values of field variables at some points exterior to the domain. The complexity was incorporated using Hicks approximation. The convergence and stability analysis was also computed for those higher-order finite difference explicit and implicit methods in case of solving a one dimensional heat equation. The obtained numerical results were compared with exact solutions. It is found that backward time and fourth-order centered space implicit scheme along with Hicks approximation performed well over the other mentioned higher-order approaches.
文摘一、前言 英国宗教哲学家约翰×希克(John Hick)的思想发展是一个从原来的一神信仰唯我独尊到后来的宗教多元论的转变过程,尽管如此,信仰与理性之间的对比、辩证与纠葛,是他终其一生处理的问题.这点最早反映在他在1957年出版的第一本专著《信仰与知识:一种对宗教知识问题的现代引论》(Faith and Knowledge:A Modern Introduction to the Problem of Religious Knowledge,以下简称《信仰与知识》)里,他的扛鼎之作《宗教之解释一人类对超越者的回应》(An nterpretation of Religion:Human Responses to the Transcendent,1984)系统地体现了这一关怀,晚年出版的《宗教与科学的新境域:宗教经验、神经科学与超越者》(The New Frontier of Religion and Science:Religious Experi-ence,Neuroscience and the Transcendent,2006)、《在信仰与怀疑之间:关于宗教与理性的对话》(Between Faith and Doubt:Dia-logues on Rehigion and Reason,2010)等著作之中亦延续了这份关怀.若细查希克在这些著作中的论述,不难发现希克所念兹在兹者,是如何论证信仰中的知识向度和人类宗教经验与其他经验之间的同构性,而笔者认为这一观点早已反映在1 957年出版的《信仰与知识》一书中.
