口腔颌面部鳞状细胞癌的综合序列治疗

口腔颌面部鳞状细胞癌(鳞癌)在头颈部肿瘤的发病和治疗中占有重要地位,综合序列治疗的概念和理论逐渐成为口腔颌面部鳞癌治疗的指导原则。本文对口腔颌面部鳞癌综合序列治疗所包含的手术治疗、放射治疗、化学治疗及生物治疗从临床治疗策略上进行分析、讨论,以期促进口腔颌面部鳞癌综合序列治疗原则在临床获得更好地应用。     

Eyewitness identification in simultaneous and sequential lineups: an investigation of position effects using receiver operating characteristics

For decades, sequential lineups have been considered superior to simultaneous lineups in the context of eyewitness identification. However, most of the research leading to this conclusion was based on the analysis of diagnosticity ratios that do not control for the respondent’s response criterion. Recent research based on the analysis of ROC curves has found either equal discriminability for sequential and simultaneous lineups, or higher discriminability for simultaneous lineups. Some evidence for potential position effects and for criterion shifts in sequential lineups has also been reported. Using ROC curve analysis, we investigated the effects of the suspect’s position on discriminability and response criteria in both simultaneous and sequential lineups. We found that sequential lineups suffered from an unwanted position effect. Respondents employed a strict criterion for the earliest lineup positions, and shifted to a more liberal criterion for later positions. No position effects and no criterion shifts were observed in simultaneous lineups. This result suggests that sequential lineups are not superior to simultaneous lineups, and may give rise to unwanted position effects that have to be considered when conducting police lineups.     

序列语义的类别一致性关系能否进行无意识整合？

阈下语义之间能否进行整合,最近的研究给出了不同的结果。当多个阈下语义词语同时呈现时显示出无意识语义整合效应,但是当序列呈现时没有观察到无意识整合效应。本研究在保留同时呈现方法优点（不同空间呈现位置）的情况下研究了序列呈现的不同汉字词语之间能否产生无意识语义类别关系整合。在实验1中,两个相同或不同类别的词语作为阈下启动刺激先后在两侧呈现,且第一个词语消失后第二词语马上出现,结果显示出无意识语义类别整合效应。实验2延长了两个阈下启动词语之间的时间间隔,结果未发现无意识语义类别整合效应。另外,实验3进一步排除了实验1中第一个启动词语的视觉残留,结果也未观察到显著的无意识语义类别整合效应,说明实验1中观察到的无意识整合效应是视觉残留所致。综合三个实验结果表明,两个阈下词语之间的语义类别一致性关系只有在同时呈现这种特殊条件下才能进行无意识整合加工,说明了短时间维度对于无意识语义关系整合的重要性。     

言语产生中双词素词的语音编码

采用同音判断和音节监控方法 ,考察言语产生中双词素词语音激活的特点。选用以偏正结构的双词素词为名称的图片和与双词素词中首尾两个词素同音的两组探测字作为实验材料 ,探测字在图片呈现后 5 0毫秒 (实验一 ) ,或图片呈现前 130 0毫秒 (实验二 )出现 ,要求被试判断出现的字是否与图片名称中任何一个词素同音。实验结果与绝大部分言语产生理论的预期相反 ,对图片名称第一词素的反应慢于第二词素。考虑到首尾两个词素对整词意义贡献的差别 ,作者把实验结果解释为词素意义对语音激活的作用 :第二词素的语义重要性决定了对应音节激活的快速性 ,双词素词中词素音位激活的速度和时间性受词义和词素意义激活程度的影响 ,而不完全取决于词素发音的序列性。实验不支持音位编码从左到右、序列进行的观点     

On the multivariate asymptotic distribution of sequential Chi-square statistics

The multivariate asymptotic distribution of sequential Chi-square test statistics is investigated. It is shown that: (a) when sequential Chi-square statistics are calculated for nested models on the same data, the statistics have an asymptotic intercorrelation which may be expressed in closed form, and which is, in many cases, quite high; and (b) sequential Chi-squaredifference tests are asymptotically independent. Some Monte Carlo evidence on the applicability of the theory is provided.This research was carried out while the first author was Visiting Professor in the Department of Statistics in the University of South Africa, and was supported in part by a research grant (NSERC #67-4640) from the National Sciences and Engineering Council of Canada to the first author. The support of both of these organizations is acknowledged with gratitude.     

Factors affecting conditional discrimination learning by pigeons

In Experiment 1 (within subjects) and Experiment 2 (between subjects) it was shown that the sequential training of pigeons on a color discrimination and then on its reversal, each in a different floor-tilt/texture context, failed to produce conditional control of discriminative performance by those contexts. Daily alternation between the two problems (with correlated contexts) was successful, however. In each of these experiments conditional control was better reflected in generalization test performance in extinction than during sessions of training with reinforcement.     

Dynamics in the fine structure of schedule-controlled behavior.

The variability in the behavioral equilibrium established by six basic schedules was characterized. The measures were the pause preceding the first response in each interreinforcement interval; the mean rate of responding in each interreinforcement interval; and the relative frequency of each interresponse time. The temporal windows ranged across the 780-session exposure, across a session, and across the interreinforcement interval. A display of individual interresponse times as a function of time in the interreinforcement interval indicated clear recurrent responding at somewhat less than 3 Hz in every bird, even after extended exposure to a schedule and regardless of the contingency. No strong sequential dependencies in the interresponse-time distributions were identified. A simulator, based on a simple recurrent pulser, was presented that produced output similar to the obtained data. An archival data base of the behavior chronically maintained by the simple schedules was also generated.     

Cumulative impact neglect in processing sequential changes

We demonstrate that decision contexts that involve sequential numerical changes over time can lead to suboptimal consumer choices in both incentivized and hypothetical studies. This is because, for such changes, an earlier outcome has a cumulative effect on the final total, which consumers tend to ignore. We document the prevalence of consumers' tendency to neglect this cumulative impact when processing sequential rent increases and price discounts as consumers focus on the naïve totals and trends formed by the consecutive price changes and choose economically inferior options. We propose a nudge that helps alert consumers about the cumulative effects and decrease their tendency to fall prey to this bias. We discuss the theoretical contributions as well as the implications for consumers, managers, and policymakers.