The authors explore Massively Multiplayer Online Games (MMOG) business models in order to characterize two main problems: big initial investment and continuous expenditures. The four main actors of a MMOG environment – game producer, Game, Players and Business Model – are analysed resorting to Actor Network Theory in order to understand their alignment in Business Models and how they can influe...

We propose a Bayesian stochastic search approach to selecting restrictions for Vector Autoregressive (VAR) models. For this purpose, we develop a Markov Chain Monte Carlo (MCMC) algorithm that visits high posterior probability restrictions on the elements of both the VAR regression coefficients and the error variance matrix. Numerical simulations show that stochastic search based on this algori...

To explore the contributions that fishing, trophic interactions and plankton production make to explanations of the observed variation of higher trophic (principally fish) levels in the western English Channel ecosystem, Ecosim simulations were run from 1973 to 1999 using the most complete data set yet assembled. The results indicate that a bottom-up mechanism plays an important role in the sys...

Air cargo services are among the most important producer services for manufacturers with internationalized production networks. In the context of supply chain management strategies, such services allow ®rms to respond more effectively to competitive forces in global markets. Our research aims to relate to and deepen the theoretical literature on advanced producer services and global production ...

We investigate the role supply chain disruptions during COVID-19 pandemic played in U.S. producer price index (PPI) inflation. exploit pre-pandemic cross-industry variation sourcing patterns across countries and interact it with measures of international bottlenecks pandemic.

A class of extended aggregation operators, called impact functions, is proposed and their basic properties are examined. Some important classes of functions like generalized ordered weighted averaging (OWA) and ordered weighted maximum (OWMax) operators are considered. The general idea is illustrated by the Producer Assessment Problem which includes the scientometric problem of rating scientist...

Whereas maize is a primary staple food in Kenya, production volumes have not kept pace with local demand and consumption over time. This has constrained the achievement of Kenyan government’s stated objective access, diversity, nutritional status. Using secondary data from FAOSTAT 1963 to 2016 applying error correction version autoregressive distributed lag model, we estimate Kenya’s subsector’...

Investment is an activity carried out by one of the economic actors, namely producers, who always try to choose right business field, so that it can bring maximum profit from field will be involved. In determining choice involved in, course considering various aspects in general, which are related and affect achievement goal as a producer, obtaining profit. This very closely studies components ...

Directional dispersal plays a large role in shaping ecological processes in diverse systems such as rivers, coastlines and vegetation communities. We describe an instability driven by directional dispersal in a spatially explicit consumer–producer model where spatial patterns emerge in the absence of external environmental variation. Dispersal of the consumer has both undirected and directed co...