惊艳以胆的名义--华人音响CHK"盖世一号"家庭影院系统

在我们的印象中,胆机(电子管放大器)一直都是高端音响的代名词,它以温暖纯厚的音质倾倒了无数的音响发烧友；而AV系统则要求大动态、有震撼力和冲击力的音效,在这一领域,石机(晶体管放大器)是当仁不让的首选。许多年来,胆机和石机一直在各自的领域发挥着自己的专长,过着井水不犯河水的生活。而今天,我们却收到了一套另类的家庭影院产品,它不仅有着漂亮的外观,更特别的是,它还创意性地将胆机和石机完美地结合了起来,让电子管走进了AV功放。它究竟是何方神圣?     

The derivation of hue-difference terms from CIELAB coordinates

A simple, yet reliable, method is described for deducing the appropriate term to describe a hue difference between two specimens whose CIELAB hue angles are known. It is based on the rotation of the chroma axis through the position of the specimen regarded as standard and the association of the four unitary hues with the four a* b* axes, two of which must be specified to eliminate ambiguities.     

Filtering applications in static distance comparators

In the past, distance comparators have depended on their method of comparison to achieve some degree of filtering. The best comparators designed on this basis may not meet future system requirements, the letter gives an example of the application of digital techniques to achieve a much more versatile device.     

Architecture During Wartime: The Mostra d'Oltremare and Esposizione Universale di Roma

This paper examines the architecture and planning of the Mostra d'Oltremare in Naples—a national display of colonial expansion that opened in May 1940—and the Esposizione Universale di Roma—an “Olympics of Civilization” that was proposed for 1942. These two major exhibitions will be studied in relation to Italy's violent and racially motivated Imperial politics. In the first case, it will closely examine the “Villaggi indigeni” (Indigenous village) of Italian East Africa, a scientific re-enactment of native constructions that became a space of violence and political confinement. In the second, it will study the “Villaggio operaio” (Workers' village), which, just like the larger exhibition grounds, was transformed into a site of military conflict during the war period.     

Simulation of a differential current protection scheme involvingmultiple current transformers

Differential protection schemes for busbars, generators or transformers connect multiple current transformers in parallel across a common burden. This paper describes the techniques used to simulate such an arrangement and concentrates particularly on the three current transformer case