# Bryan Salazar López

### Bryan Salazar López

By profession, Industrial Engineer, Master in Logistics, specialized in productivity, with interest and experience in modeling processes under sustainability indicators. Founder of Ingenieriaindustrialonline.com, site where research contributions, articles and references are collected.
• Operations research

## Special cases of linear programming (Graphical Method)

To start, it is important to remember that in a linear programming model, the goal is to find the optimal solution that maximizes or minimizes an objective function, subject to a set of constraints. In the graphical method, the objective function and the constraints are represented graphically on a Cartesian plane, forming a feasible region that contains all possible solutions.…

• Operations research

## The graphical method

The graphical method is a technique for solving linear programming problems that is primarily used for cases with two variables. Although it is not very practical for a large number of variables, it is very useful for interpreting and analyzing the results and sensitivity of the problem. However, in cases where a greater number of variables is required, it is…

• Time study

## Calculation of standard time or typical time

The calculation of standard time or typical time is the first stage in the data processing of time study. Although the specialist in the middle of the analysis may consider it necessary to observe the operations again, this stage does not require a great mastery of arithmetic. It consists of common and current calculations that can be done in a…

• Time study

## What is Time Study?

Time study, also known as the classical method with a stopwatch, was proposed by Frederick Taylor in 1881. Although other methodologies for measuring work have been developed, the classical method with a stopwatch remains the most widely used. This study consists of measuring the time a worker spends on a given task, in order to establish a standard time. It…

• Warehouse management

## What is a WMS?

A WMS (Warehouse Management System) is a software that allows you to carry out an intelligent and real-time control of the operation, increase the speed of the transactions and have a wide visibility of the movements in the warehouse or the CEDI. In other words, it is a tool that supports operations management. The objective of a WMS is to…

• Operations research

## Simplex Method

Simplex method is a solving problem analytic method of linear programming, able to resolve complex models than the resolved through graphic method. Simplex method is an iterative method that improves the solution on each step. The mathematical reason of this improvement is that the method consists in walking through a neighbor vertex in such a way that raises or decreases…

• Quality control and management

## 5’s Methodology

To the extent that the organization represents the means that allow the people who collaborate in it to achieve their individual objective, constitutes a factor that has significant impact on the behavior on those who collaborate in the company, the employees. Parallel to the behavior, performance is closely linked to the working conditions, in such a way organization’s objectives, as…

• Lean Manufacturing

## Failure Mode Effect Analysis (FMEA)

The Failure Mode and Effect Analysis, also known as FMEA, was born in the US, at the end of the 40’s. This methodology was developed by NASA, with the final porpoise of knowing the real failures of the equipment and how reliable they are. What is the FMEA? Failure Mode Effect Analysis is a procedure that allows us to identify…

• Maintenance management

## Total Productive Maintenance (TPM)

Total Productive Maintenance, also known as TPM, was born in the US, and has its main concepts were developed on decade of the 50’s. Preventive Maintenance consists in partial revision activities in a planned way; on which changes, substitutions, lubrications, among other activities are executed before flaws are materialized. This planned way requires periodic scheduling, having into account the technical…

• Operations research

## Linear programming

Linear Programming corresponds to an algorithm trough which real situations can be solved in which the goal is to identify and resolve difficulties to rise productivity about resources (mainly limited and expensive resources), raising like this the benefits. The main goal of Linear Programming is to optimize (minimize or maximize) linear functions in many real variables with linear constraints (linear…