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New goods play a central role in many trade and growth models. We use detailed trade and firm-level data from a large developing economy—India—to investigate the relationship between declines in trade costs, the imports of intermediate inputs and domestic firm product scope. We estimate substantial static gains from trade through access to new imported(More)
This paper examines how prices, markups and marginal costs respond to trade liberalization. We develop a framework to estimate markups from production data with multi-product rms. This approach does not require assumptions on the market structure or demand curves faced by rms, nor assumptions on how rms allocate their inputs across products. We exploit(More)
We determine how time delays affect international trade, using newly-collected data on the days it takes to move standard cargo from the factory gate to the ship in 98 countries. We estimate a difference gravity equation that controls for remoteness, and find significant effects of time costs on trade. We find that each additional day that a product is(More)
This paper explores how reductions in tari¤s on imported inputs and …nal goods a¤ect …rm productivity by exploiting the special tari¤ treatment that processing …rms apply on imported inputs as opposed to those of non-processing …rms. Highly disaggregated Chinese transaction-level trade data and …rm-level production data from 2000 to 2006 are used to(More)
Recent theoretical work predicts that an important margin of adjustment to deregulation or trade reforms is the reallocation of output within firms through changes in their product mix. Empirical work has accordingly shifted its focus towards multi-product firms and their product mix decisions. Existing studies have however focused exclusively on the U.S.(More)
Firms face competing needs to expand product variety and reduce production costs. Trade policy affects firm investments in product variety and production processes differently. Access to larger markets enables innovation to reduce costs. Although firm scale increases, foreign competition reduces markups. Firms react by narrowing their product varieties to(More)
We develop a new model of multi-product …rms which invest to improve both the quality of their individual products and of their brand. Because of ‡exible manufacturing, products closer to …rms'core competence have lower costs, so they produce more of them, and also have higher incentives to invest in their quality. These two e¤ects have opposite(More)
If trade barriers are managed by inecient institutions, trade liberalization can lead to greater-than-expected gains. We examine Chinese textile and clothing exports before and after the elimination of externally imposed export quotas. Both the surge in export volume and the decline in export prices following quota removal are driven by net entry. This(More)
We present Anomalous Packet Detection using Partitioned Payload system, we call as AnPDPP. AnPDPP is an improvement to PAYL system which is considered one of the complete systems for payload based anomaly detection. PAYL takes into consideration the entire payload for profile calculation and effectively for anomaly detection. Payload length is very high on(More)
Individuals that consume different baskets of goods are differentially affected by relative price changes caused by international trade. We develop a methodology to measure the unequal gains from trade across consumers within countries. The approach requires data on aggregate expenditures and parameters estimated from a nonhomothetic gravity equation. We(More)