The ‘curse of dimensionality’ resolved: The effects of climate change and trade barriers in large dimensional modelling

Solving large scale optimisation problems over space and time quickly generates a computational impasse, termed the ‘curse of dimensionality’. This severely limits the practical use of economic models, especially for determining the effects of climate change and protectionist trade policies. In this paper, we employ an innovative approach to solving (otherwise unsolvable) large scale systems through the use of parallel processing methods and a proper ordering of variables and equations in a ‘Nested Doubly Bordered Block Diagonal’ form. We illustrate how the approach can be used to solve an intertemporal CGE model with more than 500 million equations. Using existing damage functions, the framework allows us to determine the impact of climate change on long-run economic growth for 112 countries as a result of the effect of sea-level rise on land endowments, variation in crop yields and productivity and shifts in the demand for energy and transportation. We also compare our solution to more common (and smaller dimensional) recursive methods, in terms of both the economic effects of climate change and potential increases in trade barriers, showing the power and efficiency of our computational approach and parallel processing routine.     

Price versus quantity in a mixed duopoly with foreign penetration

We characterize the endogenous competition structure (in prices or quantities) in a differentiated duopoly between a public firm that maximizes domestic welfare and a private firm that can be owned by domestic or foreign investors. The market for which they compete can be domestic or integrated: in the first case Bertrand competition emerges endogenously and in the second case Cournot competition can emerge if the fraction of domestic consumers in the integrated market is low enough. We also determine the optimal degree of foreign penetration showing the optimality of a partial foreign ownership. Finally, we extend the model to increasing marginal cost confirming the robustness of the results.     

THE IMPACT OF DOMESTIC AND FOREIGN COMPETITION ON SECTORAL GROWTH: A CROSS‐COUNTRY ANALYSIS

This paper examines the impact of competition on the total factor productivity (TFP) of 21 manufacturing sectors in eighteen OECD countries over the period of time 1990–2006. We assume that the source of TFP growth can be either domestic or foreign innovation or technology transfer from the technological frontier. Trade openness, R&D, and human capital can have two effects: a direct effect on TFP (e.g., through innovation) and an indirect effect depending on the productivity gap between a given country and the technological frontier. We find that tougher domestic competition is always associated with higher sectoral productivity. Both import and export penetrations are positively associated with an increase of TFP. However, the channels through which higher TFP is materialized are different: export penetration works through level effect, while import penetration acts mainly when conditional on the level of technological development. The economical magnitude of the effect is not trivial.     

Trading spaces: Calculating embodied Ecological Footprints in international trade using a Product Land Use Matrix (PLUM)

Nations import and export biophysical resources. With many ecosystems worldwide under mounting stress, countries may be increasingly interested in knowing the extent and origin of their ecological imports and dependencies. In this paper the Ecological Footprint is used as a tool to measure the biophysical (as opposed to financial) value of international trade flows. This paper attempts to answer the following question: How large of an Ecological Footprint does a given country exert inside the borders of each of its trading partners? Records in the UN COMTRADE bilateral trade database are multiplied by a matrix of per-product Footprint yield coefficients to translate from values in dollars and tonnes to units of hectares. The results show that the largest interregional flows are from Latin to North America, and from North America to Asia-Pacific. Grouping countries by GDP, high and middle income countries appear in Footprint terms to trade predominantly with other high and middle income countries and much less with low income countries.     

Does trade integration alter monetary policy transmission?

This paper explores the role of trade integration—or openness—for monetary policy transmission in a medium-scale new Keynesian model. Allowing for strategic complementarities in price setting, we highlight a new dimension of the exchange rate channel by which monetary policy directly impacts domestic inflation: a monetary contraction which appreciates the exchange rate lowers the local currency price of imported goods; this, in turn, induces domestic producers to lower their prices too. We pin down key parameters of the model by matching impulse responses obtained from a vector autoregression on time series for the US relative to the euro area. Our estimation procedure yields plausible parameter values and suggests a strong role for strategic complementarities. Counterfactual simulations show that openness alters monetary transmission significantly. While the contractionary effect of a monetary policy shock on inflation and output tends to increase in openness, we find that monetary policy's control over inflation increases, as the output decline which is necessary to bring about a given reduction of inflation is smaller in more open economies.     

Measuring China’s domestic production networks through Trade in Value-added perspectives

Evaluating the role and performance of China's participation in Global value chains (GVCs) has been a hot policy and research issue in recent years. However, most GVCs-related literature about China focuses on country-to-country relations; less attention has been paid to China's domestic value chains (DVCs). GVCs should have their domestic foundations since strong linkages across domestic firms and regions can improve productivity through gains from specialization, which make domestic industries more competitive in GVCs in turn. This paper applies the so-called Trade in Value-added (TiVA) concept and the decomposition of domestic-regional trade in TiVA terms to re-measure the inter-industrial and interregional linkages in China's DVCs. We show that TiVA-based measures can significantly enrich our understanding on both the structure change of China's regional economy and the position and participation degree of Chinese regions in DVCs.     

How do trade openness,public expenditure and institutional performance affect unemployment in OIC countries? Evidence from the DCCE approach

This study explores the relationship between trade openness, public expenditure, institutional performance, and unemployment in member countries of the Organization of Islamic Cooperation (OIC) (formerly the Organization of the Islamic Conference). The conventional panel data techniques overlook cross-sectional dependence and yield-biased results. A new methodology called dynamic common correlated effects (DCCE) is employed to deal with the issue of cross-sectional dependence. The long-run results demonstrate that trade openness is inversely and significantly associated with overall unemployment and youth unemployment in lower-income as well as all the OIC economies and positively correlated in the higher-income OIC group. Public expenditure has an inverse and significant correlation with unemployment in OIC countries overall and higher-income OIC countries. Moreover, institutional performance and foreign direct investment are negatively related to unemployment in all OIC economies. The research shows the need for the continuation of open trade policies, strong institutions, and higher public expenditure in the OIC countries in order to decrease overall unemployment—in particular, youth unemployment.     

Criteria involved in evaluation of trade shows to visit

An organizer of trade shows (TSs) need to know the framework of criteria used by potential visitors in their ex-ante evaluation of trade shows. This paper comes to fill a gap in the published research, aiming to answer two research questions: which criteria are important for visitors in evaluating TSs to visit? And which is the underlying structure of criteria? A sample of retailers was interviewed and, after using a Confirmatory Factor Analysis, a measurement model was identified. The results confirm the underlying structure suggested by the integration of separate criteria or elements previously identified in other studies. Also, that the changes in the marketing orientation of companies have affected the evaluation criteria used by visitors. Additionally, the results show differences between visitants and exhibitors. The main disparity is the non-relevance of the marketing research criteria: TSs are a good marketing research tool for exhibitors but much more limited for visitors.     

中国和印度的贸易扩张:威胁还是机遇?

本文探讨了中印之间以及中印与其它国家之间的贸易竞争性和互补性。研究结果表明:(1)印度在第三方市场,尤其在服装、纺织品和皮革制品等方面,面临来自中国的强烈竞争;(2)中印之间的贸易增长具有一定潜力;(3)中国在中等技术行业对东亚各国、美国和大多数欧洲国家构成挑战,而印度主要对周边的南亚国家构成威胁;(4)在贸易的互补性方面,中国和印度大幅上升的进口为美国、欧洲和东亚一些国家,尤其是日本、韩国、马来西亚、新加坡和泰国的出口提供了扩张的机会。同时我们发现中国的出口结构正在发生变化,技术密集型和高科技产品的出口份额在增加,这表明从长期来看,由中国劳动密集型产品出口带来的挑战将会削弱。本文探讨了中印之间以及中印与其它国家之间的贸易竞争性和互补性。研究结果表明:(1)印度在第三方市场,尤其在服装、纺织品和皮革制品等方面,面临来自中国的强烈竞争;(2)中印之间的贸易增长具有一定潜力;(3)中国在中等技术行业对东亚各国、美国和大多数欧洲国家构成挑战,而印度主要对周边的南亚国家构成威胁;(4)在贸易的互补性方面,中国和印度大幅上升的进口为美国、欧洲和东亚一些国家,尤其是日本、韩国、马来西亚、新加坡和泰国的出口提供了扩张的机会。同时我们发现中国的出口结构正在发生变化,技术密集型和高科技产品的出口份额在增加,这表明从长期来看,由中国劳动密集型产品出口带来的挑战将会削弱。     

The Scope and Limits of a Public–Private Hybrid: Dispute Settlement under NAFTA Chapter 19

Globalisation is often depicted as having led to an increase in private authority at the expense of that of the state. It is important to correctly specify the scope that private authority has achieved and the capacity of states to push back and limit that authority. This article grounds these theoretical issues in a discussion of the hybrid, public–private dispute settlement mechanism set up in the original Canada–US Free Trade Agreement (CUSTFA), and later extended into Chapter 19 of the North American Free Trade Agreement (NAFTA). It finds that privatising the enforcement process did make a difference. Trade experts on panels saw things differently to judges and in ways that were more sympathetic to exporters. This favoured Canadian and Mexican interests. However, the arrangement lacked deep roots. It was a late-stage compromise in trade negotiations. This rendered it vulnerable to a US counterattack once panels began to rule in favour of Canadian and Mexican challenges to US trade determinations. The transfer of quasi-judicial authority to a public–private hybrid proved contingent, partly on the hegemonic state's ongoing level of comfort with the arrangement, as well as on a lack of business consensus within the United States.