职业需求导向下的高职英语听说教学探索与实践——以浙江经贸职业技术学院国际贸易实务专业为例

本文以浙江经贸职业技术学院国际贸易实务专业为例,通过对英语听说能力在毕业生就业中的作用以及英语听说教学现状的调查分析,从听说有机整合,融合职业场景和改进教学模式等方面探索英语听说教学改革,以顺应高职英语听说教学的要求,从而更加有效地促进学生英语听说能力的提高。     

Studying Public Policy through Immigration Policy: Advances in Theory and Measurement

This essay provides a critical review of the field of immigration policy studies from the perspective of measurement and modeling. It serves to contextualize and broaden the views presented in the special issue. As such, we combine insights from American and comparative politics, pinpoint key limitations and challenges in the field, and identify areas of strength within each subfield which could inform theory and measurement development for the other. Ultimately, the concerns about conceptualization, definition, and measurement that we identify and discuss herein, do not apply only to immigration policy studies but to policy studies writ large.     

Why is there a lack of Mode 3 Levallois technologies in East Asia? A phylogenetic test of the Movius–Schick hypothesis

The ‘Movius–Schick hypothesis’ claims that an absence of Levallois (Mode 3) technologies in East Asia is due to the lack of a strong ancestral Acheulean (Mode 2) tradition in that region. Hence, this hypothesis is based on the assumption that similarities between Acheulean handaxes and Levallois cores can be interpreted as being phylogenetically homologous (i.e. due to common technological ancestry) as opposed to being homoplasic (i.e. due to convergent technological evolution). Here, the phylogenetic basis of this hypothesis is tested using a formal cladistic procedure. Under the framework of an ‘iterative’ approach to phylogenetic analysis, a series of post-hoc tests and re-evaluations of results follow the initial cladistic analysis. Results of these combined analyses indicate that morphological similarities between Mode 2 Acheulean handaxes and Mode 3 Levallois cores can, most parsimoniously, be seen as phylogenetically homologous. Hence, these results support the tenets of the ‘Movius–Schick’ hypothesis in suggesting that a lack of Levallois industries in East Asia may be due to the paucity of an ancestral Acheulean tradition in that region. The implications of these phylogenetic analyses for the concept of Palaeolithic ‘Modes’ are discussed. It is further suggested that low demographic levels (i.e. small effective population sizes) in East Asia may have constrained the technological phylogenetic trajectory of East Asia compared with that seen in other regions of the Old World during the Lower Palaeolithic. In addition, it is hoped that several methodological issues discussed here will contribute to the growing field of cultural phylogenetic analysis.     

郎世宁与中国十八世纪帝王肖像画的复兴

本文探讨了中国18世纪帝王肖像画复兴的历史背景,强调了郎世宁在清内廷供职期间所起的重要作用,揭示了郎世宁独特画风的形成缘由,特别是对欧洲袖珍画的借鉴作用。同时论及此画风在宫廷绘画中消长的历程和对18世纪文人肖像画的影响。     

Spondylolysis in the lower thoracic–upper lumbar spine in a British medieval population

Spondylolysis is generally a condition of the lower lumbar spine, but occasionally it is observed at cranial to L4. It is generally agreed that spondylolysis in the lower lumbar spine represents fatigue failure of the neural arch. However, whether a biomechanical explanation is adequate to explain lesions cranial to L4 is disputed. Morphological aspects of spondylolysis at T12–L3 (five cases) are compared with those of lesions at L4–L6 (24 cases) in a mediaeval English skeletal series with the aim of shedding light upon any differences in aetiology of lesions at the two sites. It was found that spondylolysis at T12–L3 was more often unilateral than in L4–L6. In T12–L3, clefts more often took an angulated, dog‐leg course across the pars interarticularis, whereas most in L4–L6 were fairly straight and had an oblique orientation. In T12–L3, clefts often had facetted opposing surfaces suggestive of a diarthrodial joint, but this was only seen once in L4–L6. It is suggested on morphological grounds that facetted defects are more likely congenital than acquired. The need for consideration of factors in addition to activity regimes when interpreting spondylolysis in earlier populations is emphasised. Copyright © 2007 John Wiley & Sons, Ltd.     

FROM SUSA TO ANURADHAPURA: RECONSTRUCTING ASPECTS OF TRADE AND EXCHANGE IN BITUMEN‐COATED CERAMIC VESSELS BETWEEN IRAN AND SRI LANKA FROM THE THIRD TO THE NINTH CENTURIES AD*

In contrast with artefactual studies of long‐distance trade and exchange in South Asia during the Prehistoric and Early Historic periods ( Ardika et al. 1993 ; Gogte 1997 ; Krishnan and Coningham 1997 ; Tomber 2000 ; Gupta et al. 2001 ; Ford et al. 2005 ), few scientifically orientated analyses have focused on artefacts from the region's Historic period. During excavations at the ancient city of Anuradhapura, Sri Lanka, a number of buff ware ceramics with a putative organic coating on the interior were recovered ( Coningham 2006 ). Dated stylistically to between the third and ninth centuries ad , analysis of the coatings using gas chromatography–mass spectrometry (GC–MS) and stable isotope analysis (carbon and deuterium) confirmed that the coatings are bitumen—an organic product associated with petroleum deposits. There are no known bitumen sources in Sri Lanka, and biomarker distributions and isotopic signatures suggest that the majority of the samples appear to have come from a single bitumen source near Susa in Iran. The relationship between the bitumen coatings and the vessels is discussed, and it is suggested that the coatings were used to seal permeable ceramic containers to allow them to transport liquid commodities. This study enhances our knowledge of networks of trade and exchange between Sri Lanka and western Asia during Historic times.     

Studies on amerindian dogs, 1: Carbon isotopes in relation to maize in the diet of domestic dogs from early Peru and Ecuador

Work initiated purely as a dating project in support of a craniometric and morphological investigation of domestic dogs from early Peru has proved to have much wider implications. The stable carbon isotoperatios (¹³C/¹²C) of hair samples from ten dogs show that maize formed a significant part of their diet. Radiocarbon dates for these remains have confirmed that they belong to the period well after the cultivation of maize was first established. Stable carbon isotope measurements can thus be used to test for the presence of maize as a dietary constituent at earlier sites even where there is otherwise only indirect evidence for its cultivation. Collagen from animal or human bone is a suitable alternative to hair for this purpose and the method has been successfully applied to collagen dating to c. 3000 BC from the Valdivia culture site of Real Alto, Ecuador, as well as to a series of early Peruvian dogs.     

Agisoft Photoscan照片建模技术在考古中的应用

照片建模技术是指利用数码照片重建物体的三维模型的技术。和其他建模方法相比,Agisoft Photoscan照片建模技术的最大特点就是成本低,操作简单,整个建模过程由软件自动完成。在考古发掘过程中对遗迹现象、地层等拍摄数码照片,利用照片它能够快速、准确的完成三维数据模型的重建,真实的记录、保存大量发掘过程中的原始信息,便于再现不同阶段的发掘现场,也有助于遗存数字化信息的永久保存,为后续全方位的研究和虚拟化展示提供了充分保障。本研究将以洛阳定鼎门遗址博物馆前的小型建筑和一座墓葬为例,介绍Agisoft Photoscan重建遗物及遗迹3D数字模型的方法和流程以及在考古方面的应用。鉴于其对数据采集的高效性、简便的操作性以及快速建立遗迹三维数据模型的能力,在考古工作中将有着巨大的应用前景。     

基于结构面网络模拟的龙门石窟擂鼓台渗水产生机理研究

渗水病害在龙门石窟擂鼓台中发育明显,为明晰擂鼓台区渗水机理,现场对石窟内外共149条裂隙开展了调查。基于此数据样本,运用Monte-Carlo随机模拟生成了擂鼓台斜坡区结构面三维网络图。模拟结果显示,擂鼓台三窟中主要连通途径是由倾向NNW的层面和倾向SW和SE的两组近直立结构面构成,在石窟中部和南部结构面连通率分别高达87.1%和83.6%。综合该模拟结果及窟内外裂隙发育特征,可将擂鼓台北、中、南三洞渗水机理归结为:北洞SW、NWW倾向裂隙J12、J4加速2号平台滞水进入石窟顶部,洞内大量发育的倾向SW、SE裂隙向上与J12、J4连通,方便地表水渗入至洞内;中洞渗水受裂隙J12及J35控制,洞内大量发育的SW、SE倾向裂隙与J12、J35相通构成窟内主要渗水通道,其中J12与JM1直接相连是中洞渗水关键;南洞因山体缺失不存在沿层面渗水,地表水主要沿砌体与山体间隙及SE、SW倾向的J11、J31、J30等构造裂隙渗入,后在洞内连通程度较高的SW倾向裂隙引导下流至窟内表。本研究所取得的经验可为同行在以后类似工程中所应用。     

基于关节臂扫描的文物精细三维信息留取

基于关节臂和高清摄影进行重庆大足千手观音现状信息留取和精细三维重建具有现状的真实、完整记录,可为现场修复提供参考,为此,提出一种新的基于关节臂高精度扫描的文物精细三维信息获取方法,利用关节臂对文物进行扫描,获得高精度几何数据,在此基础上建立超精细三维建模,同时利用人工选取控制点来获取高分辨率影像。基于本方法所获得的精细三维信息可以用于三维统计、虚拟修复和变化检测等方面,为文物的现场保护修复工作提供科学依据,并为其他文物精细三维重建提供参考。最后以重庆大足石刻造像为例,验证了该方法的可行性与有效性。