To what extent do firms rely on rural output for demand and capital? We provide new evidence on this classic development question by examining the impact of agricultural output on local economic activity. Rainfall provides exogenous and significant variation in rural earnings. We find that such fluctuations have a lasting impact on urban firms, with effects concentrated in the manufacturing sec...

Deregulation of the cytokine network is an important adaptation of pathogenic bacteria to modulate and evade a host immune response. Here we describe that IL-6 is rapidly and efficiently cleaved and inactivated by the arginine- and lysine-specific proteinases from Porphyromonas gingivalis, referred to as RGP-A, RGP-B, and KGP. One of the primary cleavage sites for RGPs has been mapped between R...

abstract export of nonoil goods in economic activities is so important and its effect on economic and comparative growth is undeniable. so, emphasize on agricultural sector and development of export in this sector prepares good conditions, for iran, to be present at international markets relying its advantages. the study tries to recognize necessary policies to enhance agricultural export poten...

BACKGROUND Heterocyclic pyrimidine nucleus, which is an essential base component of the genetic material of deoxyribonucleic acid, demonstrated various biological activities. A series of bis-pyrimidine Schiff bases were synthesized and screened for its antimicrobial and anticancer potentials. The molecular docking study was carried to find the interaction between active molecules with receptor....

Q1 Should RELIEFF be set as ReliefF as in other sources? See throughout article. Q2 Please supply date of meeting, place of publication, name of publisher and page numbers. Q3 Please supply date and place of symposium, place of publication and name of publisher. Q4 Please clarify publication details. Q5 Please supply place of publication. Q6 Please supply place of publication. Q7 Please supply ...

We demonstrate how the compilation of SQL expressions into machine code leads to significant query runtime improvements in PostgreSQL 9. Our primary goal is to connect recent research in query code generation with one of the most widely deployed database engines. The approach calls on LLVM to translate arithmetic and filter expressions into native x86 instructions just before SQL query executio...

Network devices put packets on an Internet link, and multiplex, or superpose, the packets from different active connections. Extensive empirical and theoretical studies of packet traffic variables — arrivals, sizes, and packet counts — demonstrate that the number of active connections has a dramatic effect on traffic characteristics. At low connection loads on an uncongested link — that is, wit...

A key to effective teaching is an awareness and accurate understanding of the thinking and implicit assumptions that students bring to the subject to be learned. In the absence of extensive Socratic interactions with students, one strategy to assess student thinking involves the use of concept inventories (CIs). CIs are typically multiple-choice assessments, constructed based on research into s...

We present the implementation of Distributed Constructionism (DC) through a Participatory Design (PD) methodology for an Online Learning community. The students collaborate on the content and functionality development of an online Modern Greek language course, peer review and publish content contributions, and participate in participatory design teams. Participatory design was implemented as a ...