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Supply Chain

Geek space for Supply Chain

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COVID-19 relief efforts: pro bono support.

Dear all, I write on behalf of baobab soluciones, an AIMMS partner based in Madrid. Since the onset of the pandemics we have decided to support organizations and public authorities and offer our solution development services pro-bono for crisis relief projects. We were thinking route optimisation,...

Article Immediate Supply Chain Actions to Take Amid COVID-19

There are many impacts of COVID-19 that will be felt by Supply Chains in the coming weeks and months. As advised by McKinsey, in the next 2-4 weeks it is critical for companies to understand the exposure throughout their value chain, take actions to address anticipated shortages and ensure resources...

How to build a crossroad/ 2 ways

Hi,I want to build a model that can transport stuff from (i to j) directly or by stopping over at facility r.The transportcost (i to r) and (r to j) are cheaper than the direct transport (i to j). Problems:Open(r ) is either 0 or all possible r are opened and the amount is divided up evenlyEven if t...

Supply Chain uncertainty

Dear All,I’m writing to inquire about the application of uncertainty on a supply chain model. My Supply chain model has three echelons that target the production, warehousing, and distribution of medication products. The deterministic version of my model works perfectly, but is far from reality as p...

Errors with constraint programming

Hello,I am a beginner with aimms programmation. I added a constraint which is :sum[t,BackLog(i,t)|t>14]=0But when i compile my model, it gives me this message error: Constraint programming constraints cannot be used in combination with real valued variables, only with integer valued variables, el...

Multi Depot VRP with Intermediate Facilities

Hi teams, I’m working in multi-depot VRP with Intermediate Facilites and used assumptions as follow: vehicles will depart and return in same depot vehicles will only arrive at most one customer vehicles are heterogenous with two type of capacity But the model results infeasible integer solution,...

Article Webinar (follow-up): Resilient Supply Chain Network Design

Q&A follow-up Many thanks to everyone who joined today's webinar Resilient Supply Chain Network Design presented by @Bhomik Jain, @Paul and @Aanand. We didn't have enough time to go through all submitted questions live during the webinar. In this article you will find our answers to the que...

Multi-depot VRP

Hello Team, I am working on the multidepot-VRP problem an extension of your practical example capacitated VRP. I want to make a model in which vehicles will depart from their depots to serve different customers and turn back to the same depot where it started from. I made a rough model but facing so...

Article Webinar: Analytics for a Better World

Join the second Analytics for a Better World Webinar (ABW-W) Wednesday - May 27, 2020 17:00PM-18:00PM Central European time 8:00AM-9:00AM Pacific time 11:00AM-12:00PM Eastern time Speakers:Koen Peters, Head of Development for Supply Chain Planning at World Food Programme (WFP) and PhD at Z...

CaseCreate Error

Hi! I have just build my first model on AIMMS and when I tried to run the model, the next following error appeared: If the option “Data management style” is set to “Disk files and folders”, the procedure CaseCreate is not valid. Would anyone know how I can solve this problem? Thank you very mu...

Article Study 6

Study 6: Accelerate Adoption of Relevant Customer Channels This study can help you ensure resource requirements in your supply chain. Impact – A very likely scenario is an accelerated adoption of certain customer channels, for instance online grocery. These channels might not be able to bear the inc...

Article Study 5

Study 5: Refine Capacity Smoothing This study can help you ensure resource requirements in your supply chain. Impact – As certain resources are forced to close, other resources will experience an increased load. Companies may not be able to adequately ramp up capacity and lose sales. Action – Inven...

Article Study 4

Study 4: Create Multiple Plans for Resource Utilization This study can help you ensure resource requirements in your supply chain. Impact –Manufacturing plants and warehouses will experience a sudden shift in resource utilization. There will most likely be a reduction in labor hours as fewer people ...

Article Study 3

Study 3: Identify Optimal Sourcing Locations This study can help you anticipate shortages in your supply chain. Impact – As transportation lanes become unavailable, the availability of suppliers and components will decrease. Action – There is a strategic incentive in understanding the optimal sourc...

Article Study 2

Study 2: Inspect Demand Trends This study can help you understand exposure in your supply chain. Impact –Since demand will significantly fluctuate and spike for a period of time before reverting to the mean, accurate demand signaling for the future becomes a challenge. Misreading these signals often...

Article Study 1

Study 1: Anticipate Best- and Worst-Case Operations Scenarios This study can help you understand exposure in your supply chain. Impact – Prolonged shutdowns will have both financial and operation implications, which are often very difficult to realize due to the complexity and far-reaching nature of...

Article Supply Chain Digest - December 2019

Happy holidays! Every month, we send out an email digest with our latest supply chain content. If you're not signed up to receive it in your inbox, you have the chance to read the trending topics in our Online Community! Here is an overview of the content we shared in December. Find Out How Demand...

Article Supply Chain Digest - November 2019

Every month, we send out an email digest with our latest supply chain content. If you're not signed up to receive it in your inbox, you now have the chance to read the trending topics in our Online Community! Here is an overview of the content we published in November. Get a complimentary copy of...

Article How leading retailers prepare for the holiday season

It’s hard to beat Santa’s supply chain. Who else offers present deliveries to millions of households around the world in a single night? Even our favorite retailers are not there yet! We like to think new methodologies and tools are helping them get a little bit closer, though. In this interview, Di...

Article Supply Chain Digest - October 2019

Every month, we send out an email digest with our latest supply chain content. If you're not signed up to receive it in your inbox, you now have the chance to read the trending topics in our Online Community! Here is an overview of the content we published in October.How BT is Building a Connected...

Transportation-Distribution problem of paints - Constraint Set

Hey, I have this Transportation-Distribution problem of paints and it says that in the 10th day the stock of paint of each color and each type has to be 1000L. I created a constraint: FinalStockConstraint Index domain: (d,c,t) 'd - day; c - color; t - type' Definition: sum[ds,DistributionSiteStoc...

Article Supply Chain Digest - September 2019

Every month, we send out an email digest with our latest supply chain content. If you're not signed up to receive it in your inbox, you now have the chance to read the trending topics in our Online Community! Here is an overview of the content we published in September. How do supply chain professi...

Article Supply Chain Digest - August 2019

Every month, we send out an email digest with our latest supply chain content. If you're not signed up to receive it in your inbox, you now have the chance to read the trending topics in our Online Community! Here are the trending topics for August. Could self-organization make your supply chain mor...

Infeasible Solution in my Thesis model

Hello, trying to solve my Thesis Model there has been message about infeasible solution. ''Warning: After zero iterations CPLEX 12.8 concluded that an integer solution to MeanCostPlan4 does not exist.'' the model is about my thesis, so i would appreciate some help. i attach a zipped file(Fdata1 is...

How machine learning and optimization can be applied to Omnichannel Retailing?

Today, the challenge for the companies is providing consistent, yet unique and contextual brand experiences across multiple customer-aware touchpoints, including brick and mortar, marketplaces, web, mobile and social. In response to these new customer preferences, the Omnichannel Strategy has been c...

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