Is There a Hold–up Problem?

Does Competition Solve the Hold-up Problem?∗

In an environment in which both buyers and sellers can undertake match specific investments, the presence of market competition for matches may solve hold-up and coordination problems generated by the absence of complete contingent contracts. In particular, this paper shows that when matching is assortative and sellers‘ investments precede market competition then investments are constrained eff...

Investigation of Gas Hold-up and Bubble Behavior in a Split-Cylinder Airlift Reactor: Pseudo-Plastic Non-Newtonian Fluids

Investigation of Effective Parameters on Phase Inversion Hold-up in Continuous Mixer-settler

In this paper, we studied effect of different parameters including density, viscosity, interfacial tension and solute transfer concentration on phase inversion hold-up. The results showed that change in phase density ratio had no effect on phase inversion hold-up. It also disclosed that the phase viscosity ratio was the most effective parameter affecting phase inversion hold-up and each phase h...

GENETIC AND TABU SEARCH ALGORITHMS FOR THE SINGLE MACHINE SCHEDULING PROBLEM WITH SEQUENCE-DEPENDENT SET-UP TIMES AND DETERIORATING JOBS

 This paper introduces the effects of job deterioration and sequence dependent set- up time in a single machine scheduling problem. The considered optimization criterion is the minimization of the makespan (Cmax). For this purpose, after formulating the mathematical model, genetic and tabu search algorithms were developed for the problem. Since population diversity is a very important issue in ...

The Effects of Operational Parameters on the Efficiency of a Mixer-Settler Extractor

The effects and influences of various operational parameters on the efficiency of mixer-settlers are thoroughly studied in this paper. One of the most important factors in designing a mixer-settler is to obtain an optimum operational extraction and overall efficiency. These two factors are dependent on various parameters such as impeller shape, size and speed of impeller, baffle size, residence...

Using Patient Management Problem (EPMP) in Assessment of Clinical Competency

Introduction: In recent decades integration of pedagogic and technologic approaches resulted in a change in main structure of universities. Appearance and utility of electronic education especially in assessment system and examinations of medical students, necessitates designing new assessment methods and tools. This study is to discuss and design EPMP software as an appropriate tool for measu...