Diagnostic and process evaluation tools
Para realizar en forma adecuada el diagnóstico y la evaluación de los procesos es necesario utilizar las herramientas y técnicas específicas que existen para ese cometido.
Herramientas usuales recomendadas:.
• - Brainstorming.
• - Diagrama de afinidades.
• - Diagrama de interrelaciones.
• - Dinámica de sistemas.
• - Matriz de actividades con problemas.
• - Diagrama de causa y efecto.
• - Gráfico de control.
• - Diagrama de Pareto.
• - Histograma.
• - Benchmarking.
En una primera etapa del diagnóstico es aconsejable utilizar el brainstorming (o tormenta de ideas), el diagrama de procesos (o flujograma), el diagrama de afinidades, de interrelaciones, de causa y efecto y la matriz de actividades (o áreas) con problemas; dado facilitan organizar ideas y conceptos, comunicar y consensuar acerca de lo que sucede y de lo que debería realizarse.
Brainstorming
It is a technique that can be applied both to identify, understand and size problems, and to determine their causes or solutions to them.
It contemplates two stages, the first is the development of ideas and the second is their improvement, using rules such as: eliminating dominant ideas, not criticizing, welcoming every idea, incorporating one idea at a time, but generating many. The main idea is to promote divergent thinking. It is important that the working group formed includes the main person responsible for the process in question and the personnel from the different functional areas involved in its development.
Affinities diagram
It is a graphic and visual representation of reality, whose goal is to better organize the information and find affinities in the ideas presented.
Application method:
• - Group ideas, comments, opinions or problems arising from brainstorming.
• - Detecting affinities according to sector, problem, product that originates them, can be a guide.
• - This information is then contained in sets with specific names, e.g.: set “x”.
• - Those elements that do not find affinity with others are placed in the "mixed" set for subsequent analysis.
Interrelationship diagram
It is used to understand problems that have a cause-effect link*.* The objective of this tool is to find the root of both one and more problems. The aspect that receives a greater number of arrows (key effect), needs to be quickly attacked because it can be a bottleneck.
Matrix of activities with problems
It is used as a means to focus the analysis of the problems that the work team has managed to establish. It also allows focusing on the improvement of specific areas of the process with added value. It is an appropriate instrument to be used once the results of brainstorming, the process diagram and other tools and techniques (interviews, surveys, etc.) have been obtained. One recommendation is to keep it as simple as possible.
Ishikawa or cause and effect diagram
The originality and particularity of this diagram is that it limits the probable causes of the problems in well-defined and differentiated categories, applicable to all types of processes. The usual categories, labor, machines, method, raw materials and environment – can be replaced by any other set of categories depending on the characteristics of the analyzed process.
This method of documenting causes and effects can be useful in helping to identify when something may go wrong, or can be improved. Such a diagram is usually the result of a brainstorming session where problem solvers can offer suggestions, the main goal is represented by the trunk of the diagram, and the primary factors are represented as branches. Secondary factors are added as stems, and so on. (ITIL-SOA AXELOS).
The diagram has two fundamental rules:
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- Probable cause: everything that generates a certain effect.
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- Problem: effect that constitutes a measurable element.
The appearance of this diagram relates to the skeleton of a fish, where the location of the problem is in the head and the probable causes are in the bones. The large spines being the primary causes, the medium spines being the secondary causes that affect the primary ones, and the small spines being the tertiary causes that affect the secondary ones.
The ultimate goal of this tool is to organize work by segmenting work areas to improve and change.
control chart
It is used in process analysis in order to quickly detect the imbalances or deficiencies produced and investigate their causes.
The graph is bounded by:.
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- a higher quality limit (LCS);.
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- a lower quality limit (LCI).
Among them, a quality limit (QL) defined by the organization is set. The important thing will be to observe which imbalances (problems/errors) are positioned below or above the LC, as the case may be, and to establish their causes.
Pareto diagram
One of Vilfredo Pareto's greatest contributions has been to demonstrate that a large part of the effects arise from few causes. Thus, although the proportion is not met precisely, this method has shown that, in general, 20% of the causes produce 80% of the effects. The main objective of this diagram is to detect frequencies of errors or problems, determine their relative importance in relation to the rest of the problems found in the same process. This diagram shows the problems by incidence, in descending order and at the same time the individual and accumulated percentage participation is indicated. This type of analysis, in addition to being agile and practical, requires little effort, allowing efforts to be concentrated on a few fundamental causes, leaving trivial causes to be attacked later. The use of this type of diagram is only valid in those cases where there is an adequate level of precision and observation time, since if the sampling is superficial and/or partial, the result will not be coherent.
Histogram
It is a graph that makes visible the dispersion of data of a process and defines actions required for its control and monitoring.
Its most common use is to determine the deviations or variations of the data or information that flows through the processes in relation to the specifications and tolerances determined for them. The histogram is represented by a graph made up of vertical rectangles with the same base and a height proportional to the frequency to which it refers.
Steps to create a histogram:
• - The breadth of the data that was collected is defined, where .
• - Class intervals are determined to define the structure and parameters (bars) to be included in the graph.
• - A frequency table is prepared showing the data that was collected and that must serve as the basis for creating the histogram.
• - The histogram is prepared where each bar or vertical rectangle will assume the height in proportion to the number of observations included in each interval.
The essence of this tool is to detect behavior patterns that are difficult to perceive in tables or lists.
Benchmarking
It is about exploring how activities that are the same or similar to the one we are analyzing are carried out in other areas or sectors of the organization itself or a third-party organization. It is useful to compare and evaluate, adopting those elements (technologies, specific types of actions) that allow us to improve our process. Benchmarking is an excellent structured method to measure processes and products in a comparative way, seeking the excellence of best practices, having the user as a starting point. This tool is a powerful guide to the practices that should be adopted, the ideas that can be adapted, and the particular needs that organizations need to meet to meet their objectives. In this sense, benchmarking should provide an agenda for change based on real experiences of best practices.