STRUCTURES

g INTRODUCTION

Structure is a fundamental and sometimes intangible notion covering the recognition, observation, nature, and stability of patterns and relationships of entities. From a child's verbal description of a snowflake, to the detailed scientific analysis of the properties of magnetic fields, the concept of structure is an essential foundation of nearly every mode of inquiry and discovery in science, philosophy, and art.


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APPLIED STRUCTURES


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Abstract structure : An abstract structure is an informal object that is defined by a set of laws, properties, and relationships in a way that is logically if not always historically independent of the structures and their properties.
4 Biological structure : In biology, structures exist at all levels of organisation, ranging hierarchically from the atomic and molecular to the cellular, tissue, organ, organismic, population and ecosystem level.
4 Chemical structure : Chemistry is the science treating matter at the atomic to macromolecular scale, the reactions, transformations and aggregations of matter, as well as accompanying energy and entropy changes during these processes.
4 Musical composition : Music is an art form consisting of sound and silence expressed through time. The term musical form, a type of structure, refers to two related concepts:
4 Social structure :
A social structure is a pattern of relations. They are social organization of individuals and various life. Structures are applicable to people in how a society is as a system organized by a characteristic pattern of relationships.
4 Worksheet structure : After having read the hereaboves paragraph refering to different kinds od stucture, let us consider a Worksheet as a structure too.


= A BRIEF COMMENT ON STRUCTURALISM

Structuralism began in linguistics with the work of Ferdinand de Saussure. But many French intellectuals perceived it to have a wider application, and the model was soon modified and applied to other fields, such as anthropology, psychoanalysis and literary theory. This garnered in the dawn of structuralism as not just a method, but also an intellectual movement that came to take existentialism’s pedestal in 1960s France. As a method, the basics of structuralism consist of analyzing social events (speech, familial identity, and recounts of history, for example) to discover the synchronic structures that both underlie them and make them possible (language, kinship and narrative structure, respectively), which are then typically broken down into units, codes, rules of combination, etc. The essential theory underlying this method is that these structures are autonomous, and that their units are interdependent, because they are constituourselves, or anythingted through contrast with one another. So how we discursively conceive of , for that matter, is dependent on contexts found within historically contingent systems


= THE ENTITY RELATIONSHIP MODEL
An entity represents a discrete object. Entities can be thought of as nouns. Examples: a computer, an employee, a song, a mathematical theorem. Entities are represented as rectangles. A relationship captures how two or more entities are related to one another. Relationships can be thought of as verbs, linking two or more nouns. Relationships are represented as diamonds, connected by lines to each of the entities in the relationship. The model's linguistic aspect described above is utilized in the database query language ERROL. Entities and relationships can both have attributes. Examples: an employee entity might have a Social Security Number (SSN) attribute; the proved relationship may have a date attribute. Attributes are represented as ellipses connected to their owning entity sets by a line.


= CLAUDE LEVI STRAUSS (ANTHROPOLOGIST)

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