Middlemen in Limit-Order Markets A limit-order market enables an early seller to trade with a late buyer by leaving a price quote. But, public news in the interarrival period creates adverse selection for the seller and therefore hampers trade. High-frequency traders/machines (HFT) might restore trade by bringing the capacity to quickly update quotes on news. A theoretical model shows that HFT ...

The sorption studies of coomassie brilliant blue (CBB) from aqueous solution have been carried out on wheat bran (WB). Coomassie brilliant blue on wheat bran was used to study the adsorption behavior under various parameters such as pH, dosage amount, and contact time. It was observed that under optimized conditions up to 95.70% dye could be removed from solution onto WB. Langmuir and Freundlic...

Rhizomucor tauricus, an industrial fungus, was immobilized in sodium alginate and used as adsorbent for the removal of nickel from aqueous solutions. The biosorption capacity of Ni(II) was found to be 394 mg/g of immobilized biomass. It was observed that an increase in pH from 3 to 6 increased the percent adsorption, and an increase in liquid-to-solid ratio from 2 to 10 increased the metal upta...

abstract uranium is a natural heavy metal widely dispersed across the earth crust. in many cases due to anthropogenic disturbance, it has been found beyond its natural abundance which resulted in soil-water pollution. the objective of this study was to investigate the capability of iranian natural zeolite clinoptilolite for removal of uranium (vi) from aqueous solutions. in order to optimize re...

We develop a model where competing employers gradually learn about a worker’s productivity, like in the standard Jovanovic (1979) learning model. Rather than assuming that productivity is match-specific, we allow for general human capital productivity. We consider competitive wage determination through matching wage offers and counter-offers. We can also characterize the wage dynamics. Some of ...

The adsorption of fluorine ions from aqueous solutions by oxihydroxides of aluminum was studied. The equilibrium sorption was explained by using the Lengmuire, Freundlich, Bet and Redlich-Peterson models of isotherms. The results obtained allow one to conclude that the mathematical model of adsorption Freundlich is the best for describing the measured experimental data, which testifies to the h...

Refactoring Software Development Process Terminology Through the Use of Ontology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Paul M. Clarke, Antoni Lluís Mesquida Calafat, Damjan Ekert, J.J. Ekstrom, Tatjana Gornostaja, Milos Jovanovic, Jørn Johansen, Antonia Mas, Richard Messnarz, Blanca Nájera Villar, Alexander O’Connor, Rory V. O’Connor, Mic...

Isaac Childres, Luis A. Jauregui, Michael Foxe, Jifa Tian, Romaneh Jalilian, Igor Jovanovic, and Yong P. Chen Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, USA School of Nuclear Engineer...

Thermodynamic studies on the bioadsorption of Cr(III) onto Agave lechuguilla biomass were conduced. The experimental results at different temperatures were modeled using the Langmuir and Freundlich isotherms to obtain the characteristic parameters of each model. Both the Freundlich and Langmuir models were found to represent the bioadsorption process. The average adsorption capacities calculate...