Epos

Epos or EPOS may refer to:

Epos (library ship)

Epos is a floating library that operates in the counties of Hordaland, Sogn og Fjordane and Møre og Romsdal in Norway. The service started in 1959 and visits tiny places in the three counties twice a year. In 2005 the ship was in service 126 days per year, lending 53,300 books.

The ship has room for 6,000 books. The rest of the 20,000 books are at any given time lent out. In addition it is often supplemented with cultural activities for children, including musicians or drama. Often this is the only cultural services provided in the places it visits. The ship is manned with a captain, an able seaman, three librarians and one or two performers. The service is funded by the county libraries in the three counties.

History

The first floating library service started in 1959 using a range of ships. The first custom-built ship was put into service in 1963. It is built at Oma Yard and is 24 m (80 ft) long. The ship is owned by Vinnes Skyssbåtservice, and is used for tourist cruises in the summer.

Montre Epos SA

Epos (Montres Epos SA) is an independent Swiss manufacturer of mechanical watches, with headquarters in Grenchen, Switzerland. As well as making watches under their own brand, they manufacture watches for boutique watch companies such as Montblanc and MarcelloC. In 2013 year first was announced quarz collection.

External links

Duality

Duality may refer to:

Mathematics

Philosophy, logic, and psychology

Science

Electrical and mechanical

Duality (projective geometry)

In geometry a striking feature of projective planes is the symmetry of the roles played by points and lines in the definitions and theorems, and (plane) duality is the formalization of this concept. There are two approaches to the subject of duality, one through language (§ Principle of Duality) and the other a more functional approach through special mappings. These are completely equivalent and either treatment has as its starting point the axiomatic version of the geometries under consideration. In the functional approach there is a map between related geometries that is called a duality. Such a map can be constructed in many ways. The concept of plane duality readily extends to space duality and beyond that to duality in any finite-dimensional projective geometry.

Principle of Duality

A projective plane C may be defined axiomatically as an incidence structure, in terms of a set P of points, a set L of lines, and an incidence relation I that determines which points lie on which lines. These sets can be used to define a plane dual structure.

Duality (CoPs)

In the context of a Community of practice the notion of a duality is used to capture the idea of the tension between two opposing forces which become a driving force for change and creativity. Wenger (Wenger 1998) uses the concept of dualities to examine the forces that create and sustain a Community of Practice. He describes a duality thus: '... a single conceptual unit that is formed by two inseparable and mutually constitutive elements whose inherent tensions and complementarity give the concept richness and dynamism' (Wenger 1998, p. 66).

Some compare the concept of a duality to that of Yin and Yang, i.e. two mutually defining opposites.

The opposing entities in a duality need to be viewed from a perspective of balance rather than opposition. The term implies a dynamism, continual change and mutual adjustment as the tensions that are inherent in dualities can be both creative and constraining. (Wenger 1998) identifies four dualities that exist in Communities of Practice: participation-reification, designed-emergent, identification-negotiability and local-global.