A guide to use properly the website

 

The MiCorr Decision Support System (DSS) has been designed to help users refine their diagnosis on metal artefacts by searching, from corrosion forms observed, for existing case studies and corrosion models within the MiCorr database and enriching this database by submitting new artefacts.

 

Before starting using MiCorr, we recommend any vistor to look at:

 

-          The Tour which gives an introduction to the philosophy of the MiCorr application.


-          The About tab of the top menu which presents the context of the project, its methodology and the
           development / coordination / administration teams.

 

-          The Scientific bases tab of the top menu which gives the knowledge required on metals 
            (composition and corrosion) and the analytical tools used to investigate them to operate properly
            the MiCorr application.

 

Specific terminologies (in orange colour and underlined) used in the different sections of the application are explained by moving the mouse and clicking on them. These terminologies are compiled in the glossary under Learn tab. 

 

Use of the MiCorr application

 

Two Search tools are used to search for existing case studies and corrosion models of the database:

-            By keywords

-            By stratigraphy representation

 

The search tool by keywords enables users to enter keywords or select filters (country, metal family, corrosion forms and environment) to speed up the search for case studies and corrosion models. Results are presented in the form of a table providing information on metal family, alloy composition, object type, object name, origin, chronology, technology and artefact location. The complete data sheet for each case study / corrosion model proposed is accessible by clicking anywhere on it.

 

The search tool by stratigraphy representation is based on the digital construction of stratigraphies documented during the visual observation of artefacts and their local probing via Bertholon’s method (Bertholon 2000) or a sample of the corrosion form observed on cross-section. A graphical user interface allows virtual construction of stratigraphies using encoded building blocks (see Stratigraphy construction). New corrosion forms are first described according to the strata (metal, corroded metal, corrosion layers etc) structure and the characteristics / sub-characteristics of each stratum (morphology, microstructure, texture etc). The MiCorr application is used then to compare the newly built corrosion forms with case studies / corrosion models already stored in its database (from preliminary or comprehensive investigations of historic and archaeological artefacts). The comparison is based on the ratio of shared characteristics and the total number of characteristics in the artefact. A comparison score has been created to determine the closest match with database entries. Results are presented in the form of a table giving access either to the complete data sheet for each case study / corrosion model or its corresponding stratigraphy (built using the search tool by stratigraphy representation).

 

The terminology used to build a stratigraphy of strata is explained when needed.

 

An application adapted to its users

 

The five possible users are described below:

 

-            Visitor: a user visiting the application without registering. He/she can contact an author of an
             artefact and share artefacts with other visitors.

 

The online MiCorr interface has been developed so that the application is accessible to everyone. Existing case studies / corrosion models can be consulted using search tools without registering but any contribution requires the user to register.

 

-             Contributor: registered user. He / she can create new artefacts and get access to other authors’
              artefacts to modify them. 

 

Any new stratigraphy built by a user who has registered is saved under the contributor’s profile. By clicking on Submitting new artefact registered users have the possibility to build their own case study / corrosion  model (named new artefact) illustrated by the stratigraphies built. Again the artefacts are saved under the contributor’s profile and the contributor has the possibility to share any artefact with any visitor / contributor of the MiCorr application.

 

It is the decision of the contributor to make any artefact available to other MiCorr users. To achieve this, the artefact has to be submitted to the administration committee. The submission of new artefacts should ultimately improve and enrich the database and make the MiCorr interface a better performing Decision Support System.

 

According to their background, contributors to MiCorr application will not use the search tool by stratigraphy representation in the same way. Conservators who work directly on objects might have access to more sub-characteristics of the different strata (except the metal) than corrosion scientists / archaeometallurgists who often work only on cross-sections of samples embedded in a resin. Although the sub-characteristics should be completely filled out for a better matching between the stratigraphy of an unknown object and of case studies / corrosion models of the MiCorr database, we recommend to leave any sub-characteristic field blank if the corresponding information is not available.

 

-              Collaborator: expert who collaborates with a visitor, a contributor or an author and who can 
               become a contributor.

 

-              Author: a contributor who has created an artefact.

 

-              Administrators: constituting the administration committee. It comprises the main

                administrator who has the right to publish online artefacts and delegated administrators 

               who act as experts  to validate or refuse an artefact. All administrators can create new

               artefacts.

 

Copyright issues


Figures

-             In the captions, add the mention: Credit MiCorr_institution_name of the contributor

-             When using a figure, drawing, picture extracted from MiCorr, the credit MiCorr_institution_name
              of the contributor will be automatically generated on the picture.


Text

-             Artefacts extracted from MiCorr are available in Pdf format. MiCorr’s logo is attached to each 
              page.

 

Complete and incomplete artefacts

 

Conservators who do not have access to analytical techniques still have the possibility to submit an artefact containing information on the object studied, macroscopic observations and the corresponding stratigraphy. Such artefacts will be specified among the list of available artefacts.

 

More complete artefacts are expected from conservation scientists or / and archaeometallurgists who should provide corrosion models.