Web Services offer a widespread standard for making services available on the Internet. Of particular interest is the possibility of composing existing distributed services to create new complex ones. Existing research has already studied long running transactions within a formal context. In this other research, compensations are just partly compositional: a transaction’s failure triggers the c...

We explore the intuitive idea that more information leads to greater dispersion of posterior beliefs about the expected state of the world. We consider three nested dispersion orders that are widely used in the literature, and derive the weakest information concept compatible with each order. Our results illustrate both the potential and the limitations of using dispersion orders as information...

Empirical factor demand analysis typically involves making a choice from among several competing non-nested functional forms. Each of the commonly used factor demand systems, such as Translog, Generalized Leontief, Quadratic, and Generalized McFadden, can provide a valid and useful empirical description of the underlying production structure of the firm. As there is no theoretical guidance on s...

We describe a system that allows the easy specification and efficient support of queries specified as a set of attribute/ predicate/value triplets over virtual nested objects constructed from relational databases. For example, the Internet Movie Database (imdb) provides virtual nested objects such as ”movies” (each one containing a movie tuple, multiple actor tuples and more) and ”actors” (cont...

Magnetohydrodynamics (MHD) is a model of plasma physics that treats the plasma as a charged fluid. As a result, the set of partial differential equations that describe this model are a time-dependent, nonlinear system of equations. Thus, the equations can be difficult to solve and efficient numerical algorithms are needed. This work shows the use of such an efficient algorithm on the incompress...

background and purpose: fungal keratitis is a suppurative, ulcerative, and sight-threatening infection of the cornea that sometimes leads to blindness. the aims of this study were: recuperating facilities for laboratory diagnosis, determining the causative microorganisms, and comparing conventional laboratory diagnostic tools and semi-nested pcr. materials and methods: sampling was conducted in...

outbreaks causing mass mortalities have been observed in the golden grey mullet (liza auratus) population in southern coastal area of the caspian sea since 2002. the clinical signs include neurological abnormalities, such as erratic swimming behavior, spiral swimming, belly-up at rest and over inflation of the swim bladder. three hundred and twelve samples of moribund fish with sizes that range...