Aggregate Production Planning and Master Scheduling Techniques
Aggregate Production Planning Techniques
There are many models to perform aggregate planning, differentiating three groups:
- Intuitive or Trial and Error Models: To get the plan as a reference, one or several plans are developed from the results or past experiences. From them, different improvements are experimented with to try to reduce costs. The trial and error method uses graphs to display the various planning strategies.
- Analytical Models: These are based on mathematical models of two types:
- Mathematical
Textile Fiber Properties and Classifications
What is TFPIA and What Does it State?
Textile Fiber Products Identification Act (TFPIA) protects consumers and producers from unfair competition resulting from the unlabeled presence of substitute materials in textile products.
What are the Two Main Classifications of Fibers?
Natural or manufactured fibers.
What are the Five Components of Textiles?
- Length
- Size
- Cross-sectional shape
- Surface contour
- Crimp fiber parts
What are the Two Main Groups of Natural Fibers?
Cellulose and protein.
What are the Two Main
Read MoreCentrifugal Pump Analysis: Performance, Cavitation, and System Variables
Centrifugal Pump Fundamentals
A high fluid head that can be elevated by a pump is called…
The power required for a pump depends on what variable? Vapor pressure.
The discharge pressure in a reciprocating pump piston depends only on the action of the pump system.
The main function of a centrifugal pump casing is to convert the rotor’s speed into useful pressure energy.
The ratio of energy transfer between a fluid pump and the energy supplied is called: pump efficiency.
In general, using centrifugal pumps,
Read MorePHP Script for Dynamic PDF Generation of Order Details
Database Connection and Query
This script generates a PDF report of orders by connecting to a MySQL database and fetching data. It uses the FPDF library for PDF creation.
First, it establishes a connection to the MySQL database:
require('AyudaPDF/fpdf/fpdf.php');
$dbc = mysqli_connect('localhost', 'root', 'root', 'birt') or die('Could not connect to the database: ' . mysqli_connect_error());
Then, it defines an SQL query to retrieve order details:
$sentencia = "SELECT orderNumber, orderDate, requiredDate,
Understanding Maps: Types, Elements, and Scales
Understanding Maps
A map is a graphic and metric representation of a piece of land, usually on a two-dimensional surface, but can also be spherical, as in globes. The metric property of a map means that it must be possible to take measurements of distances, angles, or surfaces and obtain an approximately accurate result.
Current Map Types
- Map to lost margin
- Administrativopp Map
- Analíticop Map
- Anamorphic Map
- Auxiliary Map
- Adjacent auxiliary Map
- Bathymetric map
- Base map
- Base map
- Cadastral map
- Key Map:
- Continental
Finite Element Analysis: Concepts and Applications
Iso-parametric, Sub-parametric, and Super-parametric Elements
Iso-parametric Elements
In iso-parametric elements, the geometry and field variables (such as displacement and temperature) are interpolated using the same shape functions. The number of nodes used for defining the geometry is the same as that used for interpolating the field variables.
Example: A 4-node quadrilateral element where both geometry and field variables are interpolated with the same bilinear shape functions.
Sub-parametric Elements
In
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