This paper provides new evidence about the link between firm level total factor productivity (TFP) and stock returns. We estimate firm level TFP and show that it is strongly related to several firm characteristics such as size, the book to market ratio, investment, and hiring rate. Low productivity firms earn a significant premium over high productivity firms in the following year, and this pre...

We develop a quantitative theory of human capital investment in order to evaluate the magnitude of cross-country differences in total factor productivity (TFP) that explains the variation in per-capita incomes across countries. We build a heterogeneousagent economy with cross-sectional variation in ability, schooling, and expenditures on schooling quality. In our theory, the parameters governin...

Article history: Received 29 August 2011 Received in revised form 20 September 2012 Accepted 11 December 2012 Available online 20 December 2012 Using the firm-level census data, this paper re-estimated the total factor productivity (TFP) of firms in China's iron and steel industry and examined its potential determinants over the period 1998–2007. To deal with the “endogenous input” problem, we ...

BACKGROUND The Anaerolineae lineage of Chloroflexi had been identified as one of the core microbial populations in anaerobic digesters; however, the ecological role of the Anaerolineae remains uncertain due to the scarcity of isolates and annotated genome sequences. Our previous metatranscriptional analysis revealed this prevalent population that showed minimum involvement in the main pathways ...

Virulence of Pseudomonas aeruginosa involves the co-ordinate expression of a range of factors including type IV pili (tfp), the type III secretion system (TTSS) and quorum sensing. Tfp are required for twitching motility, efficient biofilm formation, and for adhesion and type III secretion (TTS)-mediated damage to mammalian cells. We describe a novel gene (fimL) that is required for tfp biogene...

This paper examines whether receipt of an RSA grant has a causal impact on plant TFP. To tackle the problem of self-selection into the treatment group, propensity score matching is employed. In order to control for the endogeneity of other variables in the model, estimations are performed using the system GMM estimator. The results show that for low technology manufacturing, receipt of an RSA g...

Today there are several skilled algorithms to mine frequent patterns. Frequent item set mining provides the associations and correlations among items in large transactional or relational database. In this paper a new approach to mine frequent pattern in spatial database using TFP-tree is proposed. The proposed approach generates a TFP-tree that specifies the generations of frequent patterns. Ou...

Does intellectual property (IP) strategy improve the total factor productivity of enterprises (TFP)? This paper uses 21,930 enterprise-year observations China’s A-share listed from 2010–2020, adopts a multi-period difference-in-differences model, and constructs quasi-natural experiment on impacts model cities (IPMC) TFP. The findings are as follows: (1) IPMC significantly improves (2) It has la...

The opportunistic pathogen Pseudomonas aeruginosa expresses polar type IV pili (TFP), which are responsible for adhesion to various materials and twitching motility on surfaces. Twitching occurs by alternate extension and retraction of TFP, which arise from assembly and disassembly of pilin subunits at the base of the pilus. The ATPase PilB promotes pilin assembly, while the ATPase PilT or PilU...