User contributions for Dcadmin

11:1111:11, 11 May 2026 diff hist +994 N Operations Research Applications in the field of Information and Communication Technologies Created page with "Traditionally, Operations Research is the scientific study of logistic networks to provide for decision support at all levels in order to optimize production and distribution of the commodity flows. Nowadays, these logistic networks have become very large and may range over several countries, while the demands for quality of service have grown similarly to ever higher standards. Generally one agrees that to maintain such large networks successfully, one needs the control..." current
11:1111:11, 11 May 2026 diff hist +1,690 N LSE LACC Blog: The history of epidemics in Latin America has much to tell us about COVID-19 Created page with "by: '''Linda Newson''' '''Epidemic diseases through the centuries''' Epidemic diseases that result in high mortality have one feature in common: they all have their origins in animals, normally domesticated animals. Hence, smallpox is related to cowpox, influenza to swine flu, and measles probably to rinderpest and/or canine distemper. It has been suggested that COVID-19 may have originated in bats and perhaps spread to humans via a pangolin in a wet market in Wuhan, C..."
11:0911:09, 11 May 2026 diff hist +1,682 N LSE LACC Blog: Has COVID-19 ‘infected’ infrastructure development in Peru? Created page with "by: '''Antonella Bancalari and Oswaldo Molina''' The COVID-19 crisis is devastating the economies of low- and middle-income countries around the world, but one issue that has received relatively little attention is the reduction in progress of infrastructure projects. Even in normal times, half-finished infrastructure projects are a common sight in most Latin American cities. But today, with the virus sweeping across the region, a half-built hospital matters more. In Pe..."
11:0811:08, 11 May 2026 diff hist +1,206 N LSE LACC Blog: From firm hand to handshake: violence and negotiated governance in El Salvador Created page with "by: '''Viviana García Pinzón''' '''Negotiating local governance''' Take, for example, the safety measures adopted by municipal officials from the Ministry of Public Works, Transport, and Housing. It is not for nothing that in certain areas these officials are never deployed on the 13th or 18th of the month: these numbers are linked to the country’s two largest gangs, with 13 representing the M in Mara Salvatrucha and 18 relating to their rivals Barrio 18. Sometime..."
11:0711:07, 11 May 2026 diff hist +2,217 N LSE Blog Roundup: Uruguay’s COVID-19 contact tracing app reveals the growing importance of data governance frameworks Created page with "by: '''Fabrizio Scrollini; Javier Baliosian; Lorena Etcheverry and Guillermo Moncecchi''' Uruguay’s pioneering adoption of Google and Apple’s contact tracing interface is understandable given the urgent need to halt the spread of COVID-19. But this move also puts serious issues of governance, health policy, and human rights in the hands of software developers who have neither the expertise nor the legitimacy required to properly address them. During today’s crisis..."
11:0511:05, 11 May 2026 diff hist +1,372 N LSE Blog Roundup: The case for a green recovery in post-COVID Latin America Created page with "by: '''Amir Lebdioui''' The impact of COVID-19 will be more serious in Latin America than anywhere else in the world. To mitigate the damage and improve long-term prospects, the region needs to target a green recovery based on environmentally friendly growth and an expansion of renewable energy. The combination of COVID-19 and collapsing oil prices is expected to cause Latin American economies to contract by an average of 7.2% in 2020. Bouncing back from this massive s..."
11:0311:03, 11 May 2026 diff hist +895 N LiBerated Social Entrepreneur Using Business Metrics: MIGPORT Refugee Big Data Analytics Created page with "by: '''G.-W. Weber & B. Kjamili''' '''Conference and Seminar: Medan, Indonesia February 2019''' '''Methods''' - Definitions formulated by Knight - Schumpeter and Baumol - Schumpeter’s creative destruction, monopoly  - Defining terms for social entrepreneurship, for-profit, non-profit - Adam Smith’s 3 diversification model - Demand-supply analysis  - Brand management and advertisement strategies  - Statistical data, financial derivatives, bonds  -..." current
11:0111:01, 11 May 2026 diff hist +780 N Information Management and Valuation Created page with "by: '''Sabah Al-Fedaghi''' '''Abstract''' The aim of information lifecycle management is to develop a cost‐effective strategy for maintaining information assets, balancing the cost of maintaining information against business value. This paper contributes to development of theoretical information value based on a classification scheme that does not consider operational factors (e.g.storage, access). It concentrates on valuing information in terms of its type, organiza..." current
11:0011:00, 11 May 2026 diff hist +2,158 N Efficiency and Its Influencing Factors Analysis of E-commerce based on DEA and Tobit Model Created page with "by: '''Hongmei Shan, Xueyuan Xiao, Jing Shi''' '''Abstract''' The study analyzes the efficiency of electronic commerce and discusses the influence factors that affect the efficiency of electronic commerce, further puts forward some suggestions to improve the efficiency. The paper uses DEA model to evaluate the technical efficiency, scale efficiency and pure technical efficiency of 60 e-commerce enterprises listed in China in 2013-2016. Furthermore, the influencing fact..." current
10:5810:58, 11 May 2026 diff hist +1,189 N Covid-19 and the Healthcare System in China Created page with "by: '''Ulrike Reisach and Yangping Zhou''' '''Abstract''' China is known as a high-context culture, which is why our paper analyses the Covid-19 crisis in the broader context of Policy, Economy, Society, Technology, Environment and Law (PESTEL). Following this model, the challenges and influencing factors on the pandemics are being examined. While doing so, we focus on the health-related aspects such as (P) health policy, (E) health-economy, (S) societal issues, includ..."
07:4907:49, 11 May 2026 diff hist +455 N YWorks Created page with "yEd is a powerful desktop application that can be used to quickly and effectively generate high-quality diagrams. Create diagrams manually, or import your external data for analysis. Our automatic layout algorithms arrange even large data sets with just the press of a button. yEd is freely available and runs on all major platforms: Windows, Unix/Linux, and Mac OS X. Link to website: https://www.yworks.com/products/yed Category: Free OR Software" current
07:4807:48, 11 May 2026 diff hist +535 N Xmind Created page with "With its feature of open-source (except some professional features), XMind makes it possible for you to integrate the software into your product, store data into XMind files, or even build your own mind mapping software based on XMind. And we are eager to see that. As early as in 2008, XMind was awarded the best Eclipse RCP application, then in 2009, the best project for academia in the SourceForge community and one of the PCWorld 100 best products in 2010. Link to web..." current
07:4707:47, 11 May 2026 diff hist +1,253 N Web-HIPRE: Multicriteria Decision Analysis Software Created page with "by: '''Prof. Dr. Raimo Hämäläinen''' <raimo.hamalainen@aalto.fi> Web-HIPRE (v.2.0) is a new browser based version of the earlier popular web-HIPRE (v.1.22) software for multiple criteria decision analysis. Decision analysis is a very useful approach in in evaluating decision alternatives in an interactive way with the stakeholders. Applications in environmental decision making are very common. This software has been extremely popular when teaching the methods. Ther..." current
07:4607:46, 11 May 2026 diff hist +476 N Watchmaker Framework Created page with "The Watchmaker Framework is an extensible, high-performance, object-oriented framework for implementing platform-independent evolutionary/genetic algorithms in Java. The framework provides type-safe evolution for arbitrary types via a non-invasive API. The Watchmaker Framework is Open Source software, free to download and use subject to the terms of the Apache Software Licence, Version 2.0. Link to website: http://watchmaker.uncommons.org/ Category: Free OR Software" current
07:4607:46, 11 May 2026 diff hist +220 N Vizable Created page with "Vizable is a free app that turns your data into beautiful, interactive graphs. If you have a tablet, data, and questions, Vizable is for you. Link to website: https://vizable.tableau.com/ Category: Free OR Software" current
07:4507:45, 11 May 2026 diff hist +236 N Trello Created page with "Collaborate, manage projects, and reach new productivity peaks. From high rises to the home office, the way your team works is unique—accomplish it all with Trello. link to website: https://trello.com/ Category: Free OR Software" current
07:4407:44, 11 May 2026 diff hist +322 N TileMill Created page with "TileMill is an open source map design studio, developed by a community of volunteer open source contributors. Original development on the project was led by Development Seed and Mapbox as part of the 2010 Knight News Challenge. Link to website: https://tilemill-project.github.io/tilemill/ Category: Free OR Software" current
07:4307:43, 11 May 2026 diff hist +373 N Tableau Public Created page with "Bloggers are starting conversations about topics from global health to policy to sports. By adding data to the conversation, bloggers can bring a new perspective to a topic. Tableau Public lets bloggers publish data visualizations on any topic, and make them interactive so readers can dig in. Link to website: https://public.tableau.com/s/ Category: Free OR Software" current
07:4207:42, 11 May 2026 diff hist +476 N SymPy Created page with "SimPy is a process-based discrete-event simulation framework based on standard Python. Processes in SimPy are defined by Python generator functions and may, for example, be used to model active components like customers, vehicles or agents. SimPy also provides various types of shared resources to model limited capacity congestion points (like servers, checkout counters and tunnels). Link to website: https://simpy.readthedocs.io/en/latest/ Category: Free OR Software" current
07:4107:41, 11 May 2026 diff hist +652 N StatPages Created page with "The web pages listed below comprise a powerful, conveniently-accessible, multi-platform statistical software package. There are also links to online statistics books, tutorials, downloadable software, and related resources. These pages are located on servers all over the world, and are the result of much cleverness and hard work on the part of some very talented individuals. So if you find a page useful it would be nice to send the authors a short e-mail expressing your..." current
07:4107:41, 11 May 2026 diff hist +234 N SQLlite Created page with "SQLite is a self-contained, high-reliability, embedded, full-featured, public-domain, SQL database engine. SQLite is the most used database engine in the world. Link to website: https://www.sqlite.org/ Category: Free OR Software" current
07:4007:40, 11 May 2026 diff hist +1,926 N SolverStudio Created page with "'''SolverStudio''' is an add-in for Excel 2007 and later on Windows that allows you to build and solve optimisation models in Excel using any of the following optimisation modelling languages: 1. PuLP, an open-source Python-based COIN-OR modelling language developed by Stu Mitchell. PuLP is included with SolverStudio. 2. COOPR/Pyomo, an open source COIN-OR modelling language for Python which extends Pulp with abstract models, support for stochastic programming, and a l..." current
07:3907:39, 11 May 2026 diff hist +765 N Sequential Decision Analytics and Modeling: Modeling Exercises with Python Created page with "by: '''Warren Powell''' Modeling is an art, but it is art guided by a rigorous mathematical framework that ensures that we get a well-defined problem that we can put on the computer and solve. This can be viewed as building a bridge from a messy, poorly defined real-world problem to something with the clarity a computer can understand. This document develops a specific modeling process which is then illustrated using a range of problems. It uses a “teach by example..." current
07:3807:38, 11 May 2026 diff hist +160 N SDPT3 version 4.0 -- a MATLAB software for semidefinite-quadratic-linear programming Created page with "By: '''Kim-Chuan Toh , Michael J. Todd, and Reha H. Tutuncu''' Link to website: http://www.math.nus.edu.sg/~mattohkc/sdpt3.html Category: Free OR Software" current
07:3707:37, 11 May 2026 diff hist +256 N Samian Created page with "SamIam is a comprehensive tool for modeling and reasoning with Bayesian networks, developed in Java by the Automated Reasoning Group of Professor Adnan Darwiche at UCLA. Link to website: http://reasoning.cs.ucla.edu/samiam/ Category: Free OR Software" current
07:3607:36, 11 May 2026 diff hist +293 N Ruby on Rails Created page with "Ruby on Rails is open source software, so not only is it free to use, you can also help make it better. More than 4,500 people already have contributed code to Rails. It’s easier than you think to become one of them. Link to website: http://rubyonrails.org/ Category: Free OR Software" current
07:3607:36, 11 May 2026 diff hist +218 N Ruby Created page with "This is a self-contained Windows-based installer that includes the Ruby language, an execution environment, important documentation, and more. Link to website: http://rubyinstaller.org/ Category: Free OR Software" current
07:3507:35, 11 May 2026 diff hist +371 N Rstudio Created page with "RStudio is an active member of the R community. We believe free and open source data analysis software is a foundation for innovative and important work in science, education, and industry. The many customers who value our professional software capabilities help us contribute to this community. Link to website: https://www.rstudio.com/ Category: Free OR Software" current
07:3407:34, 11 May 2026 diff hist +319 N Raw Created page with "RAW Graphs works with delimiter-separated values (i.e. csv and tsv files) as well as with copied-and-pasted texts from other applications (e.g. Microsoft Excel, Google Spreadsheets, TextEdit, …). It also works with CORS-enabled endpoints (APIs). Link to website: http://rawgraphs.io/ Category: Free OR Software" current
07:3307:33, 11 May 2026 diff hist +284 N R Project Created page with "R is a free software environment for statistical computing and graphics. It compiles and runs on a wide variety of UNIX platforms, Windows and MacOS. To download R, please choose your preferred CRAN mirror. Link to website: https://www.r-project.org/ Category: Free OR Software" current
07:3207:32, 11 May 2026 diff hist +409 N QGIS Created page with "QGIS is a user friendly Open Source Geographic Information System (GIS) licensed under the GNU General Public License. QGIS is an official project of the Open Source Geospatial Foundation (OSGeo). It runs on Linux, Unix, Mac OSX, Windows and Android and supports numerous vector, raster, and database formats and functionalities. Link to website: http://www.qgis.org/en/site/ Category: Free OR Software" current
07:3107:31, 11 May 2026 diff hist +397 N PythonOptimizers Created page with "PythonOptimizers collects the software that we developed using Python before making the switch to Julia. The packages there also target numerical linear algebra and continuous optimization. The software was developed by Prof. Orban Dominique (https://www.polymtl.ca/expertises/en/orban-dominique) and his group link to website: https://github.com/PythonOptimizers Category: Free OR Software" current
07:3007:30, 11 May 2026 diff hist +183 N Python Created page with "Python is a programming language that lets you work more quickly and integrate your systems more effectively. Link to website: https://www.python.org/ Category: Free OR Software" current
07:3007:30, 11 May 2026 diff hist +212 N PyPy Created page with "PyPy is a fast, compliant alternative implementation of the Python language (2.7.12 and 3.3.5). It has several advantages and distinct features: Link to website: http://pypy.org/ Category: Free OR Software" current
07:2807:28, 11 May 2026 diff hist +732 N Pyomo Created page with "'''What Is Pyomo?''' Pyomo is a Python-based open-source software package that supports a diverse set of optimization capabilities for formulating, solving, and analyzing optimization models. A core capability of Pyomo is modeling structured optimization applications. Pyomo can be used to define general symbolic problems, create specific problem instances, and solve these instances using commercial and open-source solvers. Pyomo's modeling objects are embedded within a..." current
07:2707:27, 11 May 2026 diff hist +681 N PULP Created page with "You can begin learning Python and using PuLP by looking at the content below. We recommend that you read The Optimisation Process, Optimisation Concepts, and the Introduction to Python before beginning the case-studies. For instructions for the installation of PuLP see Installing PuLP at Home. The full PuLP function documentation is available, and useful functions will be explained in the case studies. The case studies are in order, so the later case studies will assume..." current
07:2607:26, 11 May 2026 diff hist +161 N PuLP Created page with "'''PuLP''' - A Python-based modelling environment for linear programming problems Link to website: http://www.coin-or.org/PuLP/ Category: Free OR Software" current
07:2507:25, 11 May 2026 diff hist +276 N PSPP Created page with "GNU PSPP is a program for statistical analysis of sampled data. It is a free as in freedom replacement for the proprietary program SPSS, and appears very similar to it with a few exceptions. Link to website: https://www.gnu.org/software/pspp/ Category: Free OR Software" current
07:2307:23, 11 May 2026 diff hist +368 N Prefuse Created page with "Prefuse is a set of software tools for creating rich interactive data visualizations. The original prefuse toolkit provides a visualization framework for the Java programming language. The prefuse flare toolkit provides visualization and animation tools for ActionScript and the Adobe Flash Player. Link to website: http://prefuse.org/ Category: Free OR Software" current
07:2307:23, 11 May 2026 diff hist +210 N PostGres Created page with "The core of the PostgreSQL object-relational database management system is available in several source and binary formats. Link to website: https://www.postgresql.org/download/ Category: Free OR Software" current
07:2107:21, 11 May 2026 diff hist +235 N PostGis Created page with "PostGIS is a spatial database extender for PostgreSQL object-relational database. It adds support for geographic objects allowing location queries to be run in SQL. Link to website: http://postgis.net/ Category: Free OR Software" current
07:2007:20, 11 May 2026 diff hist +378 N Pandas Created page with "Pandas is an open source, BSD-licensed library providing high-performance, easy-to-use data structures and data analysis tools for the Python programming language. pandas is a NUMFocus sponsored project. This will help ensure the success of development of pandas as a world-class open-source project. Link to website: http://pandas.pydata.org/ Category: Free OR Software" current
07:1907:19, 11 May 2026 diff hist +203 N Overleaf Created page with "Cloud-based LaTeX editor and authoring service links to material: https://www.overleaf.com/learn https://www.overleaf.com/home https://www.overleaf.com/events/webinars Category: Free OR Software" current
07:1807:18, 11 May 2026 diff hist +811 N Optimization Techniques (LPP) --- Prof. Dr. Harish Garg Created page with "The main objective of the course (Optimization Techniques) is to formulate mathematical models and to understand solution methods for real life optimal decision problems. The emphasis will be on basic study of Convex Set, Linear programming problem, Integer programming problem, Transportation problem, Project Management, Game theory etc. <html> <head> </head> <iframe width="560" height="315" src="https://www.youtube.com/embed/SPUPXq5g0tE?list=PLO-6jspot8AKI42-eZgxDCRW7..." current
07:1607:16, 11 May 2026 diff hist +1,382 N Optimization Society : Presentation on Sequential Decision Analytics - by Prof. Warren Powell Created page with "'''Introduction''' Sequential decision analytics is an umbrella for a vast range of problems that consist of the sequence: decision, information, decision, information, decision, information, … Our standard model will extend over a finite horizon, but other settings might have just one decision (decision, information, stop), two decisions (decision, information, decision, stop), a random number (we stop when a condition is met) or an infinite number. There is also a..." current
07:1407:14, 11 May 2026 diff hist +203 N Openstreetmap Created page with "OpenStreetMap is a map of the world, created by people like you and free to use under an open license. Link to website: http://www.openstreetmap.org/#map=5/51.500/-0.100 Category: Free OR Software" current
07:1307:13, 11 May 2026 diff hist +1,186 N OpenSolver Created page with "OpenSolver is an Excel VBA add-in that extends Excel’s built-in Solver with a more powerful Linear Programming solver. It is developed and maintained by Andrew Mason and students at the Engineering Science department, University of Auckland, NZ. OpenSolver provides the following features: • OpenSolver uses the excellent, Open Source, COIN-OR CBC optimization engine to quickly solve large Linear and Integer problems. • Compatible with your existing Solver models,..." current
07:1207:12, 11 May 2026 diff hist +492 N OpenBoxes Created page with "OpenBoxes is an open source supply chain management system that has been under development since 2010 and is designed to meet the needs of organizations delivering health care in resource-scarce settings, but has also been used for inventory management in the private sector. The OpenBoxes community is continually optimizing existing features and developing new features to innovatively meet users’ needs. Link to website: https://openboxes.com/about.html Category: F..." current
07:1107:11, 11 May 2026 diff hist +573 N Open Refine Created page with "OpenRefine (formerly Google Refine) is a powerful tool for working with messy data: cleaning it; transforming it from one format into another; and extending it with web services and external data. Please note that since October 2nd, 2012, Google is not actively supporting this project, which has now been rebranded to OpenRefine. Project development, documentation and promotion is now fully supported by volunteers. Find out more about the history of OpenRefine and how yo..." current
06:3706:37, 11 May 2026 diff hist +337 N Open Door Logistics Studio Created page with "Open Door Logistics Studio is an easy-to-use standalone open source application for performing (a) analysis of your customer locations, (b) sales territory design and mapping and (c) vehicle fleet routing & scheduling – all using an Excel spreadsheet. Link to website: http://www.opendoorlogistics.com/ Category: Free OR Software" current

11 May 2026