Interstimulus interval and viewing time effects in monkey list memory

Two rhesus monkeys were tested in 6- and 10-item list memory tasks for performance changes as a function of the exposure duration of the list stimuli and the interstimulus interval (ISI) between successive list stimuli. Accuracy increased with longer item exposure duration and tended to decrease with longer ISI duration. Humans, by contrast, typically show increases in accuracy with ISI, a result taken as evidence of rehearsal. The decrease in accuracy for monkeys suggests that they were not using rehearsal processes in these list memory experiments. Further tests in which choice accuracy with predictable ISIs was compared with choice accuracy with unpredictable ISIs also yielded no evidence of rehearsal by the monkeys. This apparent absence of rehearsal mechanisms in monkeys, in situations also shown to support human rehearsal, is discussed as a potential difference in the visual working memory processes of the two species.     

中国薯蓣属根状茎组系统分类的初步研究

   本文根据我国薯蓣属(Dioscorea L．)根状茎组(Sect.  Stenophora Uline)的外部形态特征、细胞染色体数、花粉形态、植物化学成分、地理分布等的规律，证明根状茎组是该属中的一个比较原始的自然类群：1．具横走的多年生地下根状茎，其它组是一年生或多年生的块茎；2．大部分是2倍体，其它组是多倍体；3．花粉粒单沟型，外壁纹饰网纹或颗粒条纹，其它组为双沟型，外壁纹饰网纹；4．含甾体皂甙元(steroidal sapogenin)，其它组不含。   我们的研究观察证明，N．N．TepaCNMeHKO根据R.Knuth系统(1924)提出的薯蓣皂甙元在该属中无分布规律的说法是无充分依据的。   本文讨论了某些组或种的划分及系统位置：取消sect.Illigerestrum Prain et Burk.；将马    肠薯蓣(D．simulans Prain et Burk．)改属根状茎组；触丝薯蓣(D．tentaculigera Prain et Burk.)应列入顶生翅组  (Sect．shannicorea Prain et Burk．)，  并提出了盾叶薯蓣  (D. zingiberensis  Wright)和穿龙薯蓣(D．nipponica Makino)种的划分和定名的意见。     

This is so contemporary? Mediums of exchange and conservation

What conservation strategies can be used for Tino Sehgal's 2005 work This Is So Contemporary, and what are their relations to oral traditions? Sehgal's art leaves no material traces, as the artist resists the use of photos and videos acting as a documentary surrogate for his work. This paper will explore how Sehgal's non-written documentation strategies connect to the work of Yumutjin Wunungmurra, a contemporary artist and ceremonial leader from Northeast Arnhem Land, Australia. The connection will be tracked through the role of caretaker and custodian that features in the workflow of both artists. The paper asks whether the performance-based strategies discussed can support the notion of conservation as a social process with multiple stakeholders.     

Repeat Consumption of Media Goods: Examining Factors Affecting Repeat Theatrical Viewing of Movies

This study explored the factors affecting repeat theatrical viewing of movies. Integrating content, social influence, and access/competition variables, the analysis reveals that the drivers of theatrical repeat viewing are different from those for box office performance. For example, the effects of genre, transmedia content, and audience review were significant only for the latter and factors such as movie length, critics’ review, and level of news coverage actually played a negative role in the repeat consumption.     

试论假日旅游经济及其健康发展

假日旅游经济是我国旅游经济发展中的一个新的增长点。本文对假日旅游经济的涵义、基本特征及产生的背景进行了论述,并提出了科学调控假日旅游经济的若干对策措施,以期有益于促使我国假日旅游经济持续、健康发展。