清代塞外围场格局与动物资源盛衰

清代的塞外围场,建于山深林茂之区,有丰富的动植物资源,地域相连,功能各异,政治军事地位十分重要。清皇室决定着围场资源的利用方式和占有形式,康乾时期不间断的军事演练式的行围对围场动物资源衰减有重要影响,嘉道停围后,骑射演武的军事功能荡然无存,但动物资源衰减依旧势不可遏。塞外围场分布格局、资源存在结构及分配形式改变,围场体系完结。     

甘肃省永登县连城鲁土司属寺壁画的科学分析和时代研究

本项研究主要是运用光学显微镜、扫描电子显微镜和共聚焦显微激光拉曼光谱技术,分析了甘肃永登连城鲁土司属寺中的妙因寺、感恩寺和雷坛中的部分壁画。分析结果表明感恩寺和雷坛壁画基本保持了明代最初的绘制风格和内容。其中感恩寺主要壁画的绘画颜料和工艺特点鲜明,表明绘制该壁画的画工不同于绘制鲁土司属寺其他壁画的工匠;妙因寺万岁殿壁画存在后期改动和重绘的情况,其中万岁殿外回廊壁画主要部分的最初绘制时间要早于万岁殿大殿内壁画的最后绘制时间;而妙因寺塔尔殿壁画则绘制于19世纪后期。     

城墙命运变迁与遗产保护思考

近五六十年来,人们对古城墙的态度发生了巨大的变化,与之密切相关的城墙命运也是如此,经历了一个从拆除到日渐重视保存、从趋于保护到热衷于修复和重建的历史过程。本文对这一过程及其重要人事进行了梳理,并分析了相关重要影响因素。同时,基于城墙命运巨大变化的历史考察,对快速城市化过程中的城市文化遗产保护进行了多方面的思考。     

南唐绘画的文人化倾向及文人画“五代萌生说”初探

中国历史上的南唐时期,因统治阶层倡导文治,文人价值观对社会精神起主导作用。在社会文化风尚的影响下,南唐画家的作品也呈现出文人化的倾向,文人画在五代已处于萌生状态,如诗、书、画开始结合于一体且书法用笔进入绘画。中国画在这一时代的发展对文人画的形成意义重大。     

James McNeill Whistler in Chile: Portrait of the Artist as Arms Dealer

The colorful and controversial life of American artist James Abbott McNeill Whistler took many twists and turns. One of the most dramatic and least explicable of the turns came in 1866, when he traveled to Valparaiso, Chile. Generations of Whistler biographers have been puzzled by the reasons for this sojourn, but a recently discovered collection of documents provides significant clues for solving the mystery. Whistler, it seems, had become involved in a scheme to provide weapons to the Chilean navy in a war against Spain. The scheme turned into a fiasco, dashing Whistler’s hopes of handsome financial profits, but his weeks in South America significantly shaped his development as an artist.     

Der erste Europäische Straßenatlas

ABSTRACT

Imitations of famous Dutch wall maps originally produced in Amsterdam by F. de Wit and W. J. Blaeu have recently been rediscovered in Italy. In Bologna, in the archive of Opera Pia dei Poveri Vergognosi, is a set of Blaeu's four wall maps of the continents, engraved on new plates by Pietro Todeschi and published by Giuseppe Longhi. The value of the discovery lies in the completeness of the exemplars, which also bear the publisher's imprint and date of publication, hitherto unknown: Europe 1677; Africa 1678; Asia 1679; America 1679/1680(?). An undated version of de Wit's world wall map, also published by Longhi, has come to light in the same archive. A copy of the same map, this time published by Giovanni Giacomo de' Rossi in Rome in 1675, was then found in Modena in the Seminario Metropolitano. Comparison of the two copies has provided a date for Longhi's undated issue; Longhi's map came after de' Rossi's, that is after 1675.     

Saxton's Maps of England and Wales: The Accuracy of Anglia and Britannia and Their Relationship to Each Other and to the County Maps

ABSTRACT

From measurements of the graticules on Saxton's two general maps of England and Wales—the atlas map Anglia and the wall map Britannia—together with other evidence, it is argued that neither map was drawn according to any specific projection, but that both were effectively produced as ‘flat-earth’ maps with the graticules superimposed afterwards. Digital versions of Saxton's maps and of a modern map, the 1:1 million Ordnance Survey transport map, are used in a number of comparisons by means of the computer program MapAnalyst. These comparisons allow the scales of the two Saxton maps to be determined. They also show that the maps are of almost the same accuracy in terms of the positioning of settlements, typically within about 4.6 kilometres, in spite of a difference in scale of a factor of about 3.6. This fact and the direct comparison of the two Saxton maps in MapAnalyst show that they are basically the same map, and it is concluded that a version of the wall map was the first to be drawn and that Anglia is a reduced copy prepared for the atlas. The lengths of Saxton's miles as used on the two maps are calculated and compared with other determinations. The relationship between the two general maps and the county maps is briefly considered, and it is provisionally concluded that the relationship is a close one.     

中国画的欣赏、鉴赏和创作

从中国画欣赏和创作的角度,谈中国画的本质特征,国画与西方绘画的关系、与中国古典哲学的关系,中国画的审美境界、中国笔墨文化等等,说明中国画是淡泊,养生,向善的艺术。强调“文”是进入中国画创作和欣赏的门槛,也是沟通画家和社会的桥梁。     

‘The land and its people’: reflections on artistic identification in an age of nations and nationalism

From the late eighteenth century onwards, increasing numbers of visual artists came to identify with their nations and with the homeland and its people. This development was strongly influenced by growing national cultural support and regulation of the arts by academies, art schools, museums and art markets in Western Europe. On a subjective level, the Rousseauan movement of a ‘return to Nature’, Herder's espousal of vernacular cultural self‐expression and, above all, the widespread Romantic cult of authenticity, were potent influences on the inner self‐identification of visual artists after 1800, and were manifested in the novel importance accorded to landscape and rural genre painting in Western Europe. Here I consider the role of national sentiment, the ‘return to Nature’ and the cult of authenticity, first in landscape paintings by Paul Sandby, J. M. W. Turner and John Constable in early nineteenth‐century Britain, and then in the rural genre paintings of Jean‐Francois Millet and Jules Breton in nineteenth‐century France and Josef Israels, Anton Mauve and Vincent Van Gogh in the later nineteenth‐century Netherlands. Their work reveals how nineteenth‐century visual artists became inwardly identified with the ‘land and its people’, and how they in turn contributed, especially through prints and engravings, to the dissemination of national imagery and a cultural nationalism.     

STRUCTURAL CONTROL ALGORITHMS IN EARTHQUAKE RESISTANT DESIGN

The dynamic finite element equations of a two-dimensional structure made of axial-flexural frame elements with tendon-driven actuators have been derived. A critical review of classical optimal control theory is made with respect to its application to the control of structure under seismic excitations. Seven control algorithms, including two newly proposed algorithms, have been described, investigated and discussed. The need of an optimal observer, Kalman filter, is discussed. The validity of separation theorem applicable to the optimal stochastic control of structure for earthquake resistance is shown. How the control system perform under the circumstances of actuator saturation is also shown. Several numerical examples are worked out to demonstrate and compare the efficiency and limitations of those control algorithms.