Art

Art is a diverse range of human activities in creating visual, auditory or performing artifacts – artworks, expressing the author's imaginative or technical skill, intended to be appreciated for their beauty or emotional power. In their most general form these activities include the production of works of art, the criticism of art, the study of the history of art, and the aesthetic dissemination of art.

The oldest form of art are visual arts, which include creation of images or objects in fields including painting, sculpture, printmaking, photography, and other visual media. Architecture is often included as one of the visual arts; however, like the decorative arts, it involves the creation of objects where the practical considerations of use are essential—in a way that they usually are not in a painting, for example. Music, theatre, film, dance, and other performing arts, as well as literature and other media such as interactive media, are included in a broader definition of art or the arts. Until the 17th century, art referred to any skill or mastery and was not differentiated from crafts or sciences. In modern usage after the 17th century, where aesthetic considerations are paramount, the fine arts are separated and distinguished from acquired skills in general, such as the decorative or applied arts.

Artò

Artò is a frazione (and parish) of the municipality of Madonna del Sasso, in Piedmont, northern Italy.

Overview

It is a village located some km west from the Lake Orta.

History

Since 1928 Artò was a separate comune (municipality).

References

External links

Media related to Artò at Wikimedia Commons

Artà

Coordinates: 39°42′N 3°21′E / 39.700°N 3.350°E / 39.700; 3.350

Artà is one of the 53 independent municipalities on the Spanish Balearic island of Majorca. The small town of the same name is the administrative seat of this municipality in the region (Comarca) of Llevant.

Population

In 2008 the municipality of Artà had a population of 7,113 recorded residents within an area of 139.63 square kilometres (53.91 sq mi). This equates to 50.9 inhabitants per km². In 2006 the percentage of foreigners was 13.2% (890), of which Germans made up 3.9% (262). In 1991 there were still 136 illiterates in the municipality. 1,292 inhabitants had no education, 1,675 only a primary school certificate and 1,210 had secondary school leaving certificates. The official languages are Catalan and Spanish (Castilian). The Catalan dialect spoken on the island is known as Mallorquí.

Geography

Location

Artà lies in the northeast of the island of Majorca, around 60 km from the island's capital of Palma. The Massís d’Artà, the highest and most compact massif in the eastern mountain chain of the Serres de Llevant, occupies more than half the area of the municipality. The municipality is located on the western part of peninsula of Artà and is bordered in the west by the Bay of Alcúdia (Badia d’Alcúdia), and in the north by the Mediterranean sea where its coast lies opposite the neighbouring island of Minorca. The coast of Artà stretches for 25 kilometres and, so far, has escaped being developed. Particularly noteworthy are the beach and sand dune formations of sa Canova d’Artà, the flat coastal strip near the settlement of Colònia de Sant Pere, the high rocky coves of the Cap de Ferrutx and a large number of smaller bays that extend from s’Arenalet des Verger to Cala Torta.

ART image file format

ART is a proprietary image file format used mostly by the America Online (AOL) service and client software.

Technical details

The ART format (file extension ".art") holds a single still image that has been highly compressed. The format was designed to facilitate the quick downloading of images, among other things. Originally, the compression was developed by the Johnson-Grace Company, which was then acquired by AOL. When an image is converted to the ART format, the image is analyzed and the software decides what compression technique would be best. The ART format has similarities to the progressive JPEG format, and certain attributes of the ART format can lead to image quality being sacrificed for the sake of image compression (for instance, the image's color palette can be limited.)

Usage by AOL

The AOL service used the ART image format for most of the image presentation of the online service. In addition, the AOL client's web browser also automatically served such images in the ART format to achieve faster downloads on the slower dialup connections that were prevalent in those days. This conversion was done in the AOL proxy servers and could be optionally disabled by the user. This image conversion process effectively reduced the download time for image files. This technology was once branded as Turboweb and is now known as AOL TopSpeed.

Forma

Forma is a Latin word meaning "form". Both the word "forma" and the word "form" are used interchangeably as informal terms in biology:

Differential form

In the mathematical fields of differential geometry and tensor calculus, differential forms are an approach to multivariable calculus that is independent of coordinates. Differential forms provide a unified approach to defining integrands over curves, surfaces, volumes, and higher-dimensional manifolds. The modern notion of differential forms was pioneered by Élie Cartan. It has many applications, especially in geometry, topology and physics.

For instance, the expression f(x) dx from one-variable calculus is called a 1-form, and can be integrated over an interval [a, b] in the domain of f:

and similarly the expression f(x, y, z) dx ∧ dy + g(x, y, z) dx ∧ dz + h(x, y, z) dy ∧ dz is a 2-form that has a surface integral over an oriented surface S:

Likewise, a 3-form f(x, y, z) dx ∧ dy ∧ dz represents a volume element that can be integrated over a region of space.

The algebra of differential forms is organized in a way that naturally reflects the orientation of the domain of integration. There is an operation d on differential forms known as the exterior derivative that, when acting on a k-form, produces a (k + 1)-form. This operation extends the differential of a function, and the divergence and the curl of a vector field in an appropriate sense that makes the fundamental theorem of calculus, the divergence theorem, Green's theorem, and Stokes' theorem special cases of the same general result, known in this context also as the general Stokes' theorem. In a deeper way, this theorem relates the topology of the domain of integration to the structure of the differential forms themselves; the precise connection is known as de Rham's theorem.

24-form tai chi chuan

The 24-posture Simplified Form of t'ai chi ch'uan, (Chinese: 太极拳; pinyin: Tàijíquán) sometimes called the Beijing or Peking form for its place of origin, is a short version of Taiji composed of twenty-four unique movements.

History

The form was the result of an effort by the Chinese Sports Committee, which, in 1956, brought together four Taiji teachers - Chu Guiting, Cai Longyun, Fu Zhongwen, and Zhang Yu - to create a simplified form of Taiji as exercise for the masses. The creators truncated the traditional family style Taiji forms to 24 postures; taking about six minutes to perform and to give the beginner an introduction to the essential elements of Taijiquan, yet retain the traditional flavor of traditional longer hand forms (in general, 88-108 postures). Henceforth, this form was avidly promoted by the People's Republic of China for general exercise, and was also taught to internees in Communist "re-education" camps. Due to this official promotion, the 24-form is most likely the Taiji form with the most practitioners in China and the world over (though no surveys have been performed).