Eray_Cavus_030060022_Week1

1-3D Digitizing(Modelling):

-3D digitizing(old):

3D digitizing is used to capture the coordinates of the surface and load them into CATIA - a powerful 3D solid and surface modelling system more familiar to the automotive then the AEC industry. ( The AEC tecnology- Kristine Fallon-page 54)

-3D digitizing(new):(Better)

Three-dimensional digitizing inplants has been primarily used for the spatial and architectural analysis ofthe aerial parts of trees, where both the localization of branch growth units and topology (links between branches) is determined. This method is a contact measurement in which the device needs to touch some points of plants to record the 3D spatial coordinates.

(Measuring Roots: AnUpdated Approach, Prof. Dr. S.Mancuso, Page:141)

2-Rail Guided Vehicle(Transportation):

-Rail guided vehicle(old):

A floor-mounted vehicle guided with rails by a robot. 

(International SEMATECH , Technology Transfer #02064276A, s.1)

-Rail guided vehicle(new):(Better)

It is a type of material transport equipment. Motorized vehicles guided by a fixed rail system. Powered by electrified rail. Monorails used for overhead delivery of large components and subassembies.

(Fundamentals of Modern Manufacturing: Materials, Processes, and Systems, Mikell P. Groover, page:919)

3-Programming Language(Technology):

-Programming Language(old):(Better) 

Computer aided programming involves special symbolic programming languages that determine the coordinate points of corners, edges, and surfaces of the part. A programming language is a means of communicating ; it involves the use of symbolic characters. The programmer describes in this language the component to be processes, and the computer converts that description to commands for the NC machine

(Kalpakjian S., Schmid S.R., Manufacturing engineering and technology, 5th Edition, pg. 1160)

-Programming Language(new):

A programming language is an artificial formalism in which algorithms can be expressed. For all its artificiality, though, this formalism remains a language. Its study can make good use of the many concepts and tools developed in the last century in linguistics (which studies both natural and artificial languages).

(Programming Languages Yazar: Maurizio Gabbrielli,Simone Martini, page:27)

4-Surface model(Modelling):

-Surface Model(old):(Better) 

Surface models are B-rep models that represent an object as a set of closed connected higher order surface patches. In majority of CAD/CAM applications, such surface models are required. They offer better continuity across patch boundaries compared to meshed or faceted models. Further, contour models become inapplicable when the point cloud is not arranged in the sliced form. The degree of patches and the continuity across boundaries vary depending on the nature of the object and hence its point cloud. Point cloud of prismatic objects can generally be modeled using quadric surfaces, e.g., planes with C0 (position) continuity, or in some cases conics with C1 (slope) continuity. When designing the exterior of automobiles, household appliances, cellular phones and aerospace components, free form patches (e.g., Bezier or B-spline) are usually employed to enhance the design features and functionality.

(Computer Aided Engineering; Anupam Saxena, Birendra Sahay; Page: 301 )

-Surface Model(new):

These models are made up of one or more surfaces. They have a negligible wall thickness and are hollow inside. To understand these models, consider a wireframe model with a cloth wrapped around it. You cannot see through it. these models are used in the plastic molding industry, shoe manufacturing, utensils manufacturing, and so on.

(AutoCAD 2012: A Problem-Solving Approach, Yazar: Sham Tickoo,page: 25-3)

5-Modelling(Modelling)

-Modelling(old):

Each model is a purpose-dependent representation. According to the purpose of modelling, it might be required that different traits are represented or respectively ignored, therefore, we shall define model as follows:

Definition 2.1: Model is a purpose-dependent, finite, simplified, but still adequate representation of whatever is modelled,allowing us to abstract from its unimportant properties and details and to concentrate only on the most specific and most important traits.

In a typical representation of a process, the assumption is made that somebody or something acts on something else (input) to create or achieve a result (output).Apparently, such a scenario would not represent the really important fact that processes are time-dependent, i.e. they “progress” with time. More precisely, it is the process of creation and development of models that is understood as modelling.

(Avgoustinov N., Modelling in Mechanical Engineering and Mechatronics, pg. 9)

-Modelling(new):(Better)

Modelling is an attempt to describe, in a precise way, an understanding of the elements of a system of interest, their states, and their interactions with other elements. The model should be sufficiently detailed and precise so that it can in principle be used to simulate the behaviour of the system on a computer. In the context of molecular cell biology, a model may describe (some of) the mechanisms involved in transcription, translation, gene regulation, cellular signalling, DNA damage and repair processes, homeostatic processes, the cell cycle, or apoptosis. Indeed any biochemical mechanism of interest can, in principle, be modelled. At a higher level, modelling may be used to describe the functioning of a tissue, organ, or even an entire organism. At still higher levels, models can be used to describe the behaviour and time evolution of populations of individual organisms.

(Stochastic Modelling for Systems Biology, Yazar: Darren J. Wilkinson,page:3  )