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GCRI · Bazirganî û çavkaniyên stratejîk

Optimisation for trade and supply

Optimisation and operations research decide how to route, stock and diversify supply under cost and risk. In this field they design rerouting, size strategic stocks and choose sourcing portfolios that hold up across disruption scenarios.

01Qeyd

Optimisation for trade and supply on the record.

Method recordSTEM method
  1. RêbazOptîmîzasyon û lêkolîna operasyonan
  2. Applied inBazirganî û çavkaniyên stratejîk
  3. Canonical pageSTEM Commons
02Application

What optimisation and operations research does here.

Optimisation and operations research develop mathematical methods for allocating resources and making decisions under constraints. They support planning and logistics in complex, interconnected pergalan. In trade, resources and supply chains and industry and robotics, optimisation supports prepositioning of supplies, network investment and recovery sequencing. Robust formulations help choose options that perform acceptably across many scenarios. The canonical description is on STEM Commons.

Rerouting under chokepoint closure

Shipping network models find least-cost alternative routes when a chokepoint closes, and estimate added distance, time and capacity needed at alternative ports.

Strategic stock sizing

Stock levels for essential inputs are set by comparing holding costs with expected kêmasiya costs across disruption scenarios.

Sourcing portfolio design

Supplier mixes are optimised for cost and resilience, showing how much diversification reduces exposure for a given price premium.

03Simulator

Şokek di ekonomiyeke têketin-derketinê de.

A loss of output in one sector propagates through the technical coefficients to its suppliers and customers, and recovers at the rate you set; the coefficients are teaching values, not national accounts. Teaching model with stated illustrative values, not a prediction.

Kontrol

Sektora ya yekem lêketî (cih di lîsteyê de)
0
Mezinahiya şokê
30% ji derhênana wê
Dirêjahiya şokê
30 days
Rêjeya başbûnê
0.08 rojane
Rojên simulekirî
180 days

Xwendin

Zincîra pêvajoyê di wateya CEOS Analysis Ready Data de; her gav nediyariya xwe tomar dike berî ku wêne were xêzkirin. Avahiyeke giştî ye, ne encam.
0.61% of a year’s output
Tevahî li hemberî rasterast (pirkir)
1.62 times
Sektora din a herî zêde bandor lê hatiye kirin
Xizmet
Lûtkeya nexebitandina wê
3.9%
Jimar, rêbaz û çavkanî
SektorLûtkeya nexebitandinê (%)Giraniya derxistinê (%)
Çandinî30.8514.6
Enerjî2.8316.5
Çêkerî0.5019.5
Veguhastin û benderan0.3412.0
Bazirganî0.2319.8
Xizmet3.9117.6

Rêbaz

  1. Analîza têketin-derketinê Leontief (1936); Miller and Blair (2009), Input-Output Analysis, Cambridge University Press
  2. Modela têketin-derketinê ya nexebitandinê Haimes and Jiang (2001), Journal of Infrastructure Systems 7
  3. Nexebitandina dînamîk û vegerandin Lian and Haimes (2006), Systems Engineering 9
  4. Pankeya nediyarîyê (Monte Carlo ya parametreyan) Spiegelhalter, Pearson and Short (2011), Visualising uncertainty about the future, Science 333
  5. Hesasiyeta yek-yek (tornado) Saltelli and others (2008), Global Sensitivity Analysis: The Primer, Wiley

Dane

The model runs on the teaching values set by the controls. To calibrate it for a place, read it against these admitted layers and series, which this page’s map can draw:

  • Benderên behrê Natural Earth
  • Tengavên behrî yên stratejîk Nexus (tengav û kanalên bi nav di koordînatên xwe yên weşandî de)
  • Rêhesin Natural Earth
  • Rêyên sereke Natural Earth
Şokek di ekonomiyeke têketin-derketinê de. Modela fêrkirinê ya nimûneyî: ew li ser nirxên ku kontrol destnîşan dikin dimeşe, ne li ser daneyên pîvandî. Rêbaz: Analîza têketin-derketinê (Leontief (1936); Miller and Blair (2009), Input-Output Analysis, Cambridge University Press); Modela têketin-derketinê ya nexebitandinê (Haimes and Jiang (2001), Journal of Infrastructure Systems 7); Nexebitandina dînamîk û vegerandin (Lian and Haimes (2006), Systems Engineering 9).
04Dane

What the method consumes.

Datasets and records used by optimisation and operations research on this platform, with the role each plays and the label its values carry. Sources are listed in the source register.

DaneRolNîşan
Shipping routes and port capacitiesNetwork constraintsTEXMÎNKIRÎ
Disruption scenariosNediyarîMODELKIRÎ
Input costs and demandObjectivesÇAVDÊRÎKIRÎ
05Rêbaz û delîl

How optimisation for trade and supply is modelled, measured and tested.

Model, texmînên wî, daneyên wî û nediyariya wî, bi şeweyê ku zanyar an endezyar kontrol bike. Avahî rêbazên weşandî dişopînin. Nirxên hatine xêzkirin nimûneyî ne, ne encam in.

Modela pergalê

The couplings between the systems in optimisation for trade and supply: signs of influence, a reinforcing and a balancing loop, and cross-links where stress jumps.

++−+BazirganîPîşesazîCivakAborîR xurtkerB hevseng
Causal loop diagram from the page’s systems; signs show the direction of influence. Illustrative structure for a system dynamics or network model, not estimated couplings.
Prensîbên rêber ên FAIR · GO FAIR û FORCE11W3C PROV · World Wide Web ConsortiumRêwerzên ji bo birêvebirina hevgirtî ya nediyarîyan · IPCCCEOS Analysis Ready Data · Committee on Earth Observation Satellites
06Erêkirin

How results are checked.

Solutions are checked for feasibility, tested through simulation and compared with historical decisions. Analîza hesasiyetê examines how results change with parameters.

Kontrol bikinHow it is done
Out-of-sample scenariosSolutions are tested on scenarios not used to choose them
Operator reviewRoute and capacity constraints are checked with logistics operators
Trade-off reportingCost and resilience trade-offs are shown as a frontier

Optimal solutions can be fragile when assumptions are wrong. Objectives may omit values that are hard to quantify.

08Stewardship

Who maintains the method.

Zanista pergalan û modelkirin stewards optimisation and operations research for the Consortium and reviews how it is applied across platforms.

09Girêdayî

Ev rûpel li ser Konsorsiyûmê te ber bi kû ve dibe.

10Pirs

Pirs û bersiv.

What are the limits of optimisation and operations research in this field?
Optimal solutions can be fragile when assumptions are wrong. Objectives may omit values that are hard to quantify.
How are results checked?
Solutions are checked for feasibility, tested through simulation and compared with historical decisions. Sensitivity analysis examines how results change with parameters.
Are the values on this page real?
The data names, roles and checks are real descriptions of practice. The canvas shows a design of the method’s use, not a run; no result is reported here.
Where else is this method applied?
Çavdêrxaneya canonical method page lists every platform that applies it.
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rêzeya Pergalên Stratejîk is the Consortium’s quarterly publication. What you know about this subject can become evidence, a case or a correction in the next edition, credited to you and published under CC BY 4.0 where it is your own work.

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