Ordered multisignature allows signers attest to a common message as well as the order in whey they signed. Unlike multi-signature, aggregate signature aggregate signature scheme provides a method to aggregate signature by signature on different messages. In this paper, we presented an ordered multisignature provably secure without random oracles. We mainly focus on construction of perfectly hid...

A challenge facing labor economists is to explain the existence of different wage-setting mechanisms. This paper investigates the relative efficiency of competitive wage, wage bargaining and wage posting. In a search-theoretical model with human capital investment we establish the conditions, which are associated to the cost structures of human capital investment and job vacancy creation, for o...

Aggregate Shocks or Aggregate Information? Costly Information and Business Cycle Comovement When similar patterns of expansion and contraction are observed across sectors, we call this a business cycle. Yet explaining the similarity and synchronization of these cycles across industries remains a puzzle. Whereas output growth across industries is highly correlated, identifiable shocks, like shoc...

aggregate stability is an important soil property because it dictates how strongly a soil can resist water erosion. the objectives in this study were: (1) to compare the stability of six soil aggregate size fractions, primarily to determine if aggregate stability varies with aggregate size, and (2) to determine with which aggregate size fraction the stability of most soils would be different fr...

Unlike the Newsvendor model, a system based on lateral transshipments allows the unsold inventories to be moved from locations with surplus inventory to fulfill more unmet demands at stocked out locations. Both models were thoroughly studied and researches were usually confined to cost minimization or profit maximization. In this paper, we proposed a more realistic multiobjective study of both ...