Search found 11 matches

by s_mellino
02 May 2016 16:21
Forum: Databases
Topic: Negative values in the Ecoinvent 3.1 database
Replies: 4
Views: 1958

Re: Negative values in the Ecoinvent 3.1 database

Hello Andreas,
I understand what you said. The problem is when a result of MC is a negative value...how it could be possible? What is the meaning of a negative impact category?
Thank you for your time and your help.
Salvatore
by s_mellino
18 Apr 2016 13:21
Forum: Databases
Topic: Negative values in the Ecoinvent 3.1 database
Replies: 4
Views: 1958

Re: Negative values in the Ecoinvent 3.1 database

Hi Andreas,
thank you for your reply. The problem is that it is difficult to interpreter and discuss the results of Monte Carlo Simulation when we have for a given category 0.55 as quick result and -16 with a standard deviation of 130 from the montecarlo. What do you think?
Salvatore
by s_mellino
13 Apr 2016 13:59
Forum: Databases
Topic: Negative values in the Ecoinvent 3.1 database
Replies: 4
Views: 1958

Negative values in the Ecoinvent 3.1 database

Hello, I am using the Ecoinvent Database 3.1 obtained from nexus-openlca website. I would like to know why some values in processes (for example the process "fuel cell production, stack polymer electrolyte membrane, 2kW electrical, future, alloc. default, U - CH" for the input waste plastic, industr...
by s_mellino
12 Jan 2015 16:30
Forum: openLCA 1.4
Topic: Refresh product systems
Replies: 4
Views: 2611

Re: Refresh product systems

Hi Andreas,
thank you for your reply, but I think that there is something that does not work correctly. I tried to make some changes in a process but when I reopen the product system the changes do not appear...please, could you verify?
Regards,
Salvatore
by s_mellino
02 Jan 2015 17:03
Forum: openLCA 1.4
Topic: Refresh product systems
Replies: 4
Views: 2611

Refresh product systems

Hello, I'm using OpenLCA v. 1.4.1 beta 7 (Mac osx version), I would like to know if there is possible to refresh a product system (I remember that there was this possibility in the version 1.3). Is it necessary to delete the product system and create it again to include changes in the processes? Tha...
by s_mellino
06 Oct 2014 21:14
Forum: openLCA 1.4
Topic: ecoinvent and methods with normalization factors
Replies: 0
Views: 2123

ecoinvent and methods with normalization factors

Hi, is there a way to import ecoinvent 3.1 (zolca file from nexus) in the database containing the methods with normalisation and weighting factors (from http://www.openlca.org/download_page)?
Thank you for helping!
Salvatore
by s_mellino
30 Jan 2014 14:41
Forum: openLCA 1.4
Topic: exchange database between versions 1.3.4 and 1.4
Replies: 4
Views: 4152

exchange database between versions 1.3.4 and 1.4

Hi, I want to know if it is possible to exchange data between the versions 1.3.4 and 1.4 (beta 3). I have a database with many personal processes and system products, but I'm not able to export my database into a compatible format for 1.4. The version 1.3.4 exports the database in .olca but the 1.4 ...
by s_mellino
15 Oct 2013 10:49
Forum: Export
Topic: Export a process to excel
Replies: 1
Views: 2265

Export a process to excel

Hi,

I would like to know if it is possible to export the information contained in a process directly to excel.

Thanks.

Salvatore Mellino
by s_mellino
16 Jul 2013 18:15
Forum: Modelling
Topic: Monte Carlo Analysis
Replies: 3
Views: 4372

Re: Monte Carlo Analysis

Thanks Andreas,

I look forward for the new version!!!

Salvatore
by s_mellino
15 Jul 2013 14:54
Forum: Modelling
Topic: Monte Carlo Analysis
Replies: 3
Views: 4372

Monte Carlo Analysis

Hi, I'm trying to learn about the Monte Carlo Analysis in OpenLCA. As an example I used the Ecoinvent process, "corn, at farm (US)" and I performed the Monte Carlo Simulation with the CML 2001 method and 1000 iterations. I have some questions: a) The mean values are slightly different from the "norm...