A subarea analysis capability is needed in conjunction with dynamic network analysis models to allow consideration and rapid evaluation of a large number of scenarios and support transportation network planning and operations decisions for situations that may not require analysis on a complete network representation. Focusing on how to provide an up-to-date time-dependent OD demand matrix for t...

This paper presents a theory of inflation in an economy with commodity money and supports it by evidence from the inflationary episodes in France during the fourteenth and fifteenth centuries. The paper shows that commodity money can be inflated similarly to fiat money through repeated debasements, which act like devaluation. Furthermore, as with fiat money, demand for commodity money falls wit...

In this paper, we consider the relationship between supply chain network equilibrium and transportation network equilibrium. We demonstrate that a supply chain network equilibrium model introduced earlier can be reformulated as a transportation network equilibrium model with elastic demands through a supernetwork reformulation of the former. This equivalence allows us to transfer the wealth of ...

abstract increase in aquatics demand is one of the major goals for production policies. hence analysis of demand structure and aquatics consumption patterns is very applicative and useful for policy makers. using the almost ideal demand system (a.i.d.s), the demand function for types of aquatics and chicken meat in urban and rural societies in kerman city were estimated. applying time series da...

A sharp increase in the popularity of commodity investing in the past decade has triggered an unprecedented inflow of institutional funds into commodity futures markets. Such financialization of commodities coincided with significant booms and busts in commodity markets, raising concerns of policymakers. In this paper, we explore the effects of financialization in a model that features institut...

With the remarkable development of international trade, global commodity circulation has grown significantly. To accomplish commodity circulation among various regions and countries, multi-modal transportation scheme has been widely adopted by a large number of companies. Meanwhile, according to the relevant statistics, the international logistics costs reach up to approximate 30-50% of the tot...

16 Freight movement complexity and a lack of truck trip data limits freight modelling’s practicality 17 and application. Most publicly available truck movement data is reported at higher geographical levels 18 than detailed analysis and modelling require. The current Freight Analysis Framework (FAF) provides 19 freight data based on the Commodity Flow Survey (CFS) conducted every five years wit...

This paper describes a declarative approach to modeling a multimodal transportation network (MTN) composed of multiple connecting transport modes, such as bus, tram, light rail, subway and commuter rail, where within each mode, service is provided on separate lines or routes. The considered model of a network of multimodal transportation processes (MTPN) provides a framework to address the need...

In classical linear network flow (LNF) problems, a network consists of multiple source and sink nodes, where each node is a sink node or a source node, but not both. Usually, there is only one kind of commodity flow and the goal is to find flow schedules and routes such that all sink nodes’ flow demands are satisfied and the total flow transmission cost is minimized. We develop a capacity expan...

Traffic equilibrium analysis 4~s provided useful insight into the transportation planning proce~s. Even for deterministic demand models, though, the state-of-the-art does not include any efficient approach that is applicable for general equilibrium models. Existing convex programming approaches, which are efficient and guarantee convergence, are restrj.cted to single commodity (mode, user class...