一种特殊的计算机指点装置追踪球的操作活动研究

探讨在指点定位中目标方向、大小和距离对食指和拇指操纵追踪球的运动时间的效应 ,并由此建立了两种追踪球的菲茨模型。用绩效指数比较了不同指点装置的操作绩效 ,对追踪球的优化设计提出了建议。     

Genocidalism

This is an attempt to develop a more complete understanding of ``genocidalism of commission,' or the genocidal use of ``genocide,' defined stipulatively as ``the energetic attributions of ``genocide' in less than clear cases without considering available and convincing opposing evidence and argumentation.' Genocidalism is a widespread phenomenon regarding the discourse on international affairs in the advanced, liberal societies of the West, embedding a ``normative divide' between the ways of attending to domestic (national) concerns and ways of attending to international issues. I argue that genocidalism is morally wrong, explore its likely causes, and suggest possible ways of getting rid of this hateful practice. This revised version was published online in August 2006 with corrections to the Cover Date.     

"推天道以明人事":邵雍先天易学旨趣

邵雍对其先天易学(或称先天学、先天象数学)的阐释是为推演先天而在的形上之理而展开,在此过程中,先天象数易学只是其表意的工具而不是其学术思想的全部.形式上,先天易学是邵雍通过一套阴阳消长模式构建起来的象数易学;而内容上,先天易学则是其借<易>阐发儒家的性命义理之学.邵雍在其易学思想的阐释中,力图构建一个贯穿于天地万物的最高法则--"先天"之道,而最终落脚点却是其儒学所主张的人事之用.因此,他对易学的阐释始终围绕着"推天道以明人事"的易学旨趣展开.     

The forgiveness process in primary and secondary victims of violent and sexual offences

It is possible that the physical and mental health of crime victims might be improved by forgiving those who have offended against them. To date, no research has been undertaken to examine the processes that influence victims' forgiveness. The goal of this project was to examine the forgiveness process in primary and secondary victims of violent and sexual crimes. In Study 1, qualitative data were collected by interviewing 21 people who had been affected by sexual or other violent crime. Data analysis identified five themes that were common to both primary and secondary victims, namely benefit of forgiveness, self‐forgiveness, perspective taking, offender behaviour, and time. An empowerment theme was unique to primary victims, and a principal victim theme was unique to secondary victims. To further explore these qualitative findings, a quantitative survey of 60 primary and secondary victims was conducted. Results confirmed that primary victims are pragmatic forgivers who are internally focused and forgive because that will benefit their healing. Conversely, secondary victims did not think forgiveness benefited, or would impact on, their own or the primary victim's recovery process. Neither group saw forgiveness as a moral issue, nor thought that forgiveness should influence whether an offender should face court.     

A memory-based model of Hick's law

We propose and evaluate a memory-based model of Hick’s law, the approximately linear increase in choice reaction time with the logarithm of set size (the number of stimulus–response alternatives). According to the model, Hick’s law reflects a combination of associative interference during retrieval from declarative memory and occasional savings for stimulus–response repetitions due to non-retrieval. Fits to existing data sets show that the model accounts for the basic set-size effect, changes in the set-size effect with practice, and stimulus–response-repetition effects that challenge the information-theoretic view of Hick’s law. We derive the model’s prediction of an interaction between set size, stimulus fan (the number of responses associated with a particular stimulus), and stimulus–response transition, which is subsequently tested and confirmed in two experiments. Collectively, the results support the core structure of the model and its explanation of Hick’s law in terms of basic memory effects.     

Fitts’ law holds for pointing movements under conditions of restricted visual feedback

Fitts’ law robustly predicts the time required to move rapidly to a target. However, it is unclear whether Fitts’ law holds for visually guided actions under visually restricted conditions. We tested whether Fitts’ law applies under various conditions of visual restriction and compared pointing movements in each condition. Ten healthy participants performed four pointing movement tasks under different visual feedback conditions, including full-vision (FV), no-hand-movement (NM), no-target-location (NT), and no-vision (NV) feedback conditions. The movement times (MTs) for each task exhibited highly linear relationships with the index of difficulty (r² > .96). These findings suggest that pointing movements follow Fitts’ law even when visual feedback is restricted or absent. However, the MTs and accuracy of pointing movements decreased for difficult tasks involving visual restriction.     

How does the strength of the relationships between cognitive abilities evolve over the life span for low-IQ vs high-IQ adults?

The present study was designed to examine how the correlations between cognitive abilities evolve during adulthood. Data from 1104 participants on the French version of the Wechsler Adult Intelligence Scale-Third Edition were analyzed. The entire sample was divided into four age groups (16–24 years; 25–44 years; 45–69 years and 70–89 years), which were themselves split into two IQ-levels using the mean standard score on Vocabulary and Block Design. For every age group, the mean correlation between subtest scores of low-IQ participants was higher than that of high-IQ participants. There was also no interaction between age and IQ for the strength of subtest relationships. Indeed, the effect sizes of correlation differences between low- and high-IQ participants appeared to be relatively constant across age. A general developmental schema of how the strength of correlations between cognitive abilities of low- and high-IQ individuals evolves during the entire life span is sketched in the discussion.     

公德建设要超越伦理本位传统

公德是公共行为的道德规范.公德建设能够推动法治建设.在中国,由于长期伦理本位传统的影响,公德建设滞后,影响了中国道德建设,也遏制了中国法治建设的发展.推动中国公德建设必须超越伦理本位传统,将公德建设纳入法治轨道.     

Stevens' power law and the problem of meaningfulness

Frequently, it is postulated that the results of a ratio production (resp., ratio estimation) experiment can be summarized by Stevens' power law psi=alphaphi(beta). In the present article, it is argued that the power law parameters depend, among other things, on the standard stimulus presented as a reference point, and the physical stimulus scale by which the physical intensities are measured. To formalize this idea, a new formulation of Stevens' power law is presented. We show that the exponent in Stevens' power law can only be interpreted in a meaningful way if the stimulus scale is a ratio scale. Furthermore, we present empirically testable axioms (termed invertibility and weak multiplicativity) which are both necessary and sufficient for the power law exponent to be invariant under changes of the standard stimulus. Finally, invertibility and weak multiplicativity are evaluated in a ratio production experiment. Ten participants were required to adjust the area of variable circles to prescribed ratio production factors. Both axioms are violated for all participants. The results cast doubts on the well-established practice of comparing power law exponents across different modalities.