نتایج جستجو برای: economical investment and communication channel
تعداد نتایج: 16911912 فیلتر نتایج به سال:
This paper investigates the relationship between public investment in transportation and communication and economic growth using traditional instrumental estimation and a mixed fixed and random coefficient approach in the context of a dynamic panel framework. We find that there is a dynamic effect of public investment in transportation and communication on economic growth and its impact is posi...
Past information systems research on real options has focused mainly on evaluating information technology (IT) investments that embed a single, a-priori known option. However, since real options are not inherent in any IT investment, they usually must be planned and intentionally embedded in a target IT investment in order to control various investment-specific risks, just like financial risk m...
This paper reassesses the burden of the current U.S. international tax regime and reconsiders well-known welfare benchmarks used to guide international tax reform. Reinventing corporate tax policy requires that international considerations be placed front and center in the debate on how to tax corporate income. A simple framework for assessing current rules suggests a U.S. tax burden on foreign...
We consider the communication of classical and quantum information between two arbitrary observers in asymptotically flat spacetimes (possibly containing black holes) investigate what is energy cost for such transmission. By means localized two-level systems, sender receiver can use a scalar field as channel. As we have already shown previous paper, channel has non-vanishing capacity well entan...
A central physical question is the extent to which infrared (IR) observations are sufficient reconstruct a candidate ultraviolet (UV) completion. We recast this as problem of communication, with messages encoded in field configurations UV being transmitted IR degrees freedom via noisy channel specified by renormalization group (RG) flow, noise generated coarse graining / decimation. present an ...
In the process industry, network and system security have become important since the introduction of Ethernet-based fieldbus protocols. As an example, a successful attack on a power plant, supporting large cities with energy, could result in a temporal but total power loss. Such attacks could be devastating for the society. The security threats are real, and motivations for attacking industrial...
Let R be a real closed field. An integer part I for R is a discretely ordered subring such that for every r ∈ R, there exists an i ∈ I so that i ≤ r < i+ 1. Mourgues and Ressayre [11] showed that every real closed field has an integer part. In [6], it is shown that for a countable real closed field R, the integer part obtained by the procedure of Mourgues and Ressayre is ∆ωω (R). We would like ...
asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...
Design and expansion of distribution systems seems inevitable in view of the need to satisfy the rise in energy consumption in a technical and economical way. Optimal location, sizing and determining the service area of substations is one of the principle problems in expansion of distribution systems. Also uncertainty is one of the important factors that increase risk of exact decision makings....
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