Long Term Patterns of International Merchandise Trade

This FIW Special International Economics takes a long term perspective on international merchandise trade and tracks specialisation patterns of 19 world regions over the period 1980 to 2009. The data reveals that the path of trade specialisation is not predetermined: globalisation may intensify initial specialisations or may induce technological upgrading leading to new specialisation patterns. The emergence of the highly successful East Asian electronics cluster is easily discernible from our analysis as is the catch-up process of Eastern Europe. The experience of these dynamic regions contrasts with that of the African regions, West Asia and to some extent South America, whose primary role in the world economy is still that of oil and raw material suppliers. We also show that international trade in technology intensive industries has broadened geographically. High income countries in Europe, Japan and the US which dominated trade in high tech manufactures until the 1980s have suffered a considerable loss of market shares to the benefit of emerging East Asian countries causing a lot of concern about the EU’s export performance in high technology industries among European policy makers. R&D policy has become a major component of Europe’s industrial policy which is intended to support the continuous process of technological upgrading high income countries need to remain competitive in world markets. European high income regions have been successful in this respect in the sense that their export structures continue to shift towards more technology intensive industries despite the losses of global market shares which must be seen as a consequence of a broader participation in world trade. We read the major shifts in global world trade over the past decades and in particular the ‘rise of Asia’ as evidence that active trade and industrial policies can ignite and support the industrialisation process and technological upgrading within the manufacturing sector. At the same time Eastern Europe showed that a technological catch-up process can also be achieved by relying on foreign direct investment and deep trade integration with more advanced trading partners in the region. In contrast, the policies pursued by South American countries after the debt-crisis of the 1980s did not seem to have fostered significant technological upgrading. Given the undetermacy of trade specialisation over time and the multiple paths to technological upgrading we believe that international trade rules should ensure – more than they do now – that all countries have the required policy space to implement policies that foster structural changes in their economies.export specialisation, structural change, technological upgrading, industrial policy

Motion planning in 2D and 3D with rotation

Imperial Users onl

On direct and crossed channel asymptotics of four-point functions in AdS/CFT correspondence

We analyse the leading logarithmic singularities in direct and crossed channel limit of the four-point functions in dilaton-axion sector of type IIB supergravity on $AdS_{5}$ in AdS/CFT correspondence. Logarithms do not cancel in the full correlator in both channels.Comment: Revised version, typos corrected, 9 pages, no figure

Postcard: Rock City Minneapolis, Kansas

This black and white photographic postcard features three large rocks in Rock City, an attraction in Ottawa County, Kansas. The rocks are spread across the field in the foreground and background. A tree and prairie land is in the background. Typed text is in the bottom right corner of the card. There is handwriting on the back of the card.https://scholars.fhsu.edu/tj_postcards/1316/thumbnail.jp

The effect of on-net / off-net differentiation and heterogeneuous consumers on network size in mobile telecommunications : an agent-based aporoach

I explore the effects of on-net / off-net differentiation on network sizes in mobile telecommunications when both rational and non-rational consumers coexist in the market. In particular, three different types of consumers are modeled: (1) fully informed rational (FIR) consumers who are perfectly informed about the true market shares of all networks and choose the network with the lowest expected cost of a call; (2) partly informed rational (PIR) consumers who only observe market shares within a circular sensing field and choose the network with the lowest expected cost of a call based on these observed market shares; and (3) non-rational (NR) consumers who choose the network with the highest market share among their immediate neighbors. Using an agent-based simulation approach and by systematical variation of four key parameters of the model, three key results emerge. First, if the share of FIR consumers is too high, all consumers will eventually join the initially larger network A. Second, if their share in the population is sufficiently large, NR consumers can prevent the growth of clusters of consumers subscribed to network B. Third, if the share of PIR consumers is high, clusters of consumers subscribed to network B can grow, thereby increasing network B's market share, provided that the radius of their circular sensing field is small enough for the cluster size

Tariff-mediated network effects with incompletely informed consumers

I explore the competitive effects of on-net/off-net differentiation in a market with two asymmetric networks by combining the literature on on-net/off-net differentiation with research on costly consumer search in an agent-based simulation model. All consumers in the market are subscribed to one of two networks, whereby, initially, clusters of subscribers to network B exist. A priori, consumers lack information on the market shares of both network and, hence, have to engage in costly fixed-sample search. With respect to the extent of search costs, I distinguish between three types of consumers: (1) fully informed consumers (FICs) have non-positive search costs and, accordingly, are always perfectly informed about networks' market shares; (2) partly informed consumers (PICs) have moderate search costs, which allow them to observe market shares within a circular sensing field; and (3) locally informed consumers (LICs) have high search costs and, hence, only observe market shares among their immediate eight neighbours. Irrespective of their type, consumers maximize their expected utility by subscribing to the network offering the lowest expected cost for a call to a random consumer. The results of a systematic variation of the key parameters of the model show that the larger network's probability to increase its market share or to corner the market is negatively affected by the fraction of PICs and LICs, whereas it is positively affected by PICs's sensing radius, the larger network's initial market share, and the number of clusters. The introduction of calling clubs reveals that the probability of calling a friend inflicts a negative effect while the size of the calling clubs has a positive effect. These findings highlight the pivotal role of the amount of information available to consumers for the distribution of market shares

Calculation of Four Point Correlation Function of Logarithmic Conformal Field Theory Using AdS/CFT Correspondence

We use the correspondence between scalar field theory on AdS and induced conformal field theory on its boundary to calculate correlation functions of logarithmic conformal field theory in arbitrary dimensions.Our calculations utilize the newly proposed method of nilpotent weights.We derive expressions for the four point function assuming a generic interaction termComment: 7 pages, no figure

Postcard: Nichols Hardware Company Advertisement, Harlan, Kansas

This black and white printed postcard features an illustration of a man in the sky with an open parachute. He is reaching for a can of shoe polish. Another illustration of a man is holding the bottom of the can of shoe polish. Printed text is on the top, right and bottom of the card. Handwriting is on the back of the card.https://scholars.fhsu.edu/tj_postcards/1787/thumbnail.jp

Review of a Chimeric Hemagglutinin-Based Influenza Vaccine Approach

Influenza virus has affected human populations for centuries, causing an acute respiratory effect on the body. Even with scientific advancements in vaccine research, there are still serious limitations to the influenza vaccine. Varying strains and the constant recombination of the influenza virus has caused annual influenza circulation to be difficult to predict. The ongoing 40 race to develop a more efficient vaccine to broadly protect against the variety of influenza strains remains a public health priority. Many strategies have been studied to improve the current vaccine. The use of a chimeric hemagglutinin-based vaccine is in the first stages of human trials and is proving to be a promising method in the development towards a universal influenza vaccine