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.
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, interconnectedسیستەمە. 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 onSTEM 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 expectedکەمییcosts 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.
03ئەنجامدەر
شۆکێک بە ئابووریی دەرچوو-دانەدا تێدەپەڕێت.
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.
کۆنترۆڵەکان
کەرتی یەکەمجار زیانلێکەوتوو (شوێن لە لیستەکەدا)
0
قەبارەی شۆک
30% ی بەرهەمەکەی
ماوەی شۆک
30 days
ڕێژەی چاکبوونەوە
0.08 لە ڕۆژێکدا
ڕۆژی ئەزموونکراو
180 days
خوێندنەوەکان
بەرهەمی لەدەستچوو لە ماوەی ئەنجامدان
0.61% of a year’s output
کۆی گشتی بەسەر ڕاستەوخۆدا (چەندانە)
1.62 times
زۆرترین کاریگەری لەسەر کەرتی دیکە
خزمەتگوزارییەکان
بەرزترین ناکاراییەکەی
3.9%
ژمارە، ڕێگا و سەرچاوەکان
کەرت
بەرزترین ناکارایی (%)
کێشی دەرچوو (%)
کشتوکاڵ
30.85
14.6
وزە
2.83
16.5
بەرهەمهێنان
0.50
19.5
گواستنەوە و بەندەرەکان
0.34
12.0
بازرگانی
0.23
19.8
خزمەتگوزارییەکان
3.91
17.6
میتۆدەکان
شیکاری دەرچوو-دان Leontief (1936)؛ Miller و Blair (2009)، Input-Output Analysis، Cambridge University Press
مۆدێلی دەرچوو-دانی ناکارایی Haimes و Jiang (2001)، Journal of Infrastructure Systems 7
ناکارایی دینامیکی و چاکبوونەوە Lian و Haimes (2006)، Systems Engineering 9
پەنجەی نادڵنیایی (مۆنتی کارلۆی پارامیتەر) Spiegelhalter, Pearson و Short (2011)، Visualising uncertainty about the future، Science 333
هەستیاریی یەک-یەک (تۆرناد) Saltelli و ئەوانی دیکە (2008)، Global Sensitivity Analysis: The Primer، Wiley
داتا
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:
بەندەرە دەریاییەکان Natural Earth
گەرووە دەریاییەکان Nexus (ئاوەڕێ و کەناڵە ناوداڕەکان لەسەر کۆئۆردینەیتە بڵاوکراوەکانیان)
هێڵی شەمەندەفەر Natural Earth
ڕێگا سەرەکییەکان Natural Earth
شۆکێک بە ئابووریی دەرچوو-دانەدا تێدەپەڕێت. مۆدێلی فێرکاریی نموونەیی: لەسەر ئەو بەهایانە کار دەکات کە کۆنترۆڵەکان دایاندەنێن، نەک داتای پێوراو. ڕێگاکان: شیکاری دەرچوو-دان (Leontief (1936)؛ Miller و Blair (2009)، Input-Output Analysis، Cambridge University Press)؛ مۆدێلی دەرچوو-دانی ناکارایی (Haimes و Jiang (2001)، Journal of Infrastructure Systems 7)؛ ناکارایی دینامیکی و چاکبوونەوە (Lian و Haimes (2006)، Systems Engineering 9).
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 inthe source register.
داتا
ڕۆڵ
ناونیشان
Shipping routes and port capacities
Network constraints
مەزەندەکراو
Disruption scenarios
نادڵنیایی
مۆدێلکراو
Input costs and demand
Objectives
چاودێریکراو
05ڕێگا و بەڵگە
How optimisation for trade and supply is modelled, measured and tested.
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.
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.
پرەنسیپە ڕێنماییەکانی FAIR · GO FAIR و FORCE11W3C PROV · World Wide Web Consortiumڕێنمایی بۆ مامەڵەی یەکسان لەگەڵ نادڵنیاییەکان · IPCCCEOS Analysis Ready Data · Committee on Earth Observation Satellites
06پشتڕاستکردنەوە
How results are checked.
Solutions are checked for feasibility, tested through simulation and compared with historical decisions.شیکاری هەستیاریexamines how results change with parameters.
بپشکنە
How it is done
Out-of-sample scenarios
Solutions are tested on scenarios not used to choose them
Operator review
Route and capacity constraints are checked with logistics operators
Trade-off reporting
Cost 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.
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.
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