Can targeting information to network-central farmers induce more adoption of a new agricultural technology? By combining social network data and field experiment in 200 villages Malawi, we find that central is important spur the diffusion process. We also provide evidence one explanation for why centrality matters: process governed by complex contagion. Our results are consistent with model whi...

ptsd or post traumatic stress disorder is one of the most important psychological disorders in children in which symptoms such as anxiety and depression can be seen. beside the strategies like cbt or cognitive behavioral therapy and psychotherapy art therapy is one of the most important strategies which can help to children with ptsd to cope with this disorder. according to art therapy studies ...

Abstract Background Leishmaniasis is one of the most neglected tropical diseases in world and remains endemic some underdeveloped regions, including western China. The phylogeny classification Chinese Leishmania has not been completely clarified to date, especially within ( L. ) donovani complex, although phylogenetic analyses based on a series gene markers have performed. More analytic methods...

Novel [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) analogues containing benzo[b]thiophene (3a, 3b) and thieno[3,2-b]thiophene (3c, 3d) were synthesized and characterized. The morphology of the thin films prepared from the mixtures of these methanofullerenes with regioregular poly(3-hexylthiophene) (P3HT) was investigated by AFM measurement and UV-Vis absorption spectroscopy. A solubility t...

Ultrathin ferroelectric polyvinylidene fluoride (70%)-tetrafluoroethylene (30%) copolymer film is inserted between the poly3(hexylthiophene) (P3HT) donor and [6,6]-phenyl-C61-butyric acid methylester (PCBM) acceptor layers as the dipole layer to tune the relative energy levels, which can potentially maximize the open circuit voltage of bilayer organic solar cells. In this work, the power conver...

This paper analytically solves the Riccati equation of discrete optimal control with two targets and one tool. This is accomplished by reducing the problem to a nonlinear univariate dynamic equation; this can be solved by a suitable transformation of variable. Beyond its direct application to two-target economic problems, the present approach may provide insight toward the eventual solution of ...

This paper shows that the efficiency of relational contracting can be increased by reducing the public information through a novel intertemporalgarbling process of signals. A distinctive and essential feature of our intertemporalgarbling process is that past outputs have enduring effects on future signals. This process reduces the principal’s maximal reneging temptation by linking together the ...

Many separable dynamic incentive problems have primal recursive formulations in which utility promises serve as state variables. We associate families of dual recursive problems with these by selectively dualizing constraints. We make transparent the connections between recursive primal and dual approaches, relate value iteration under each and give conditions for such value iteration to be con...

This paper extends the recent investigation of Tahvonen and Withagen (1996, Journal of Economic Dynamics and Control 20, 1775}1795) for costly and thus sluggish instead of instantaneous reductions in emissions. In addition to the social optimum, the paper investigates the competitive equilibrium. This plausible extension allows to derive limit cycles as the outcome for both, the social optimum ...