This study aims to explain and elaborate a new model for the business environmental hostility in small and medium enterprises in the science and technology park in Kermanshah (Iran). The research method is a mixed method. Content analysis was used in the qualitative part, and a confirmatory factor analysis was used in the quantitative section. In the qualitative section for the environmental ho...

Interstellar turbulence is expected to dissipate quickly in the absence of continuous energy input. I examine the energy available for driving the turbulence from six likely mechanisms: magnetorotational instability, gravitational instability, protostellar outflows, H ii region expansion, stellar winds, and supernovae. I conclude that supernovae contribute far more energy than the other mechani...

Problem solving, a process of seeking, defining, evaluating, and implementing the solutions, is considered a converter that can translate organizational inputs into valuable product and service outputs. A key challenge for the product innovation community is to answer questions about how knowledge competence and problem-solving competence develop and sustain competitive advantage. The objective...

Magnetically mediated disk outflows are a leading paradigm to explain winds and jets in a variety of astrophysical sources, but where do the fields come from? Since accretion of mean magnetic flux may be disfavored in a thin turbulent disk, and only fields generated with sufficiently large scale can escape before being shredded by turbulence, in situ field production is desirable. Nonlinear hel...

A variable-speed, constant-pitch wind turbine was investigated to evaluate the feasibility of constraining its rotor speed and power output without the benefit of active aerodynamic control devices. A strategy was postulated to control rotational speed by specifying the demanded generator torque. By controlling rotor speed in relation to wind speed, the aerodynamic power extracted by the blades...

Within the environmental flows, i [...]

[1] Novaya Zemlya is a mountainous archipelago in the EasternArctic.Weather station data indicates that southeasterly high-speed winds are frequent, especially during the winter. Although it has been proposed that a bora is responsible for these winds, there has been no quantitative analysis of the flow in the region. Here we present the first high-resolution climatology of the three-dimensiona...

The main goal of the proposed research is to study theoretically the role of the breaking wind waves and the sea spray, generated by them, under strongly forced situations in the airflow dynamics in particular in energy, momentum, heat and moisture transfers through the sea surface. Through this to increase the knowledge of the air-sea interaction and to apply this knowledge for developing impr...

The goal is to investigate, theoretically and through analyzing existing data, the role that sea spray plays in transferring heat, moisture, and momentum across the air-sea interface, especially in high winds. Ultimately, I plan to develop simple, fast, physics-based parameterizations for these air-sea fluxes for use in large-scale models, especially those simulating tropical and extratropical ...