Correction to: The effect of particle size distribution on shearing response and particle breakage of two different calcareous soils (original) (raw)

Sensitivity analytic and synchronization of a new fractional-order financial system

Computational Methods for Differential Equations, 2020

In this paper, we present a new fractional-order financial system (FOFS) with the new parameters. We study the synchronization for commensurate order the fractional-order financial system with disturbance observer (FOFSDO) on the new parameters. Also the sensitivity analysis of the synchronization error investigated by using the feedback control technique for the FOFSDO. The stability of used method demonstrates by Lyapunov stability theorem. Numerical Simulation are presented to ensure the validity and influence of the target feedback control design in the presence of extrinsic bounded unknown disturbance.

A new efficient authenticated multiple-key exchange protocol from bilinear pairings

The main goal of this paper is to analyze the security of a multiple-key agreement protocol and to show that this protocol is vulnerable to forgery attack. In order to address the security weakness, a new efficient multiple-key agreement protocol is proposed. The proposed protocol is based on bilinear pairings and utilizes a novel signature scheme without one-way hash functions. In contrast to related protocols which are based on bilinear pairings, in the proposed protocol, these pairings are not utilized for the included signature scheme, but they are only used for session keys. As a result, the computational complexity of the proposed protocol is decreased by 50% compared to that of the existing protocols. Another contribution of the proposed protocol is an increase of the number of the session keys up to (n2(n + 1)2/4), for nP2 random numbers, regarding the bilinear property of the pairings. Finally, the simulation results from AVISPA tools confirm the security analysis of the proposed protocol.

Effective Factors in Improving Iran’s Perceived Business Environment.pdf

Evolutionary economics theory and cognitive psychology emphasize that individuals' subjective perceptions will change through learning from the environment. So by managing environmental factors, it's possible to change the entrepreneurs’ perception of business environment. A positive attitude toward business environment is a key factor influencing people’s intention to create a new venture. Given the uniqueness of social, political, cultural and economic context in every country, there are some important variables that have the most influence on perception of business environment. This study is going to identify the most important elements in Iran that influence PBE by using Delphi method. Through participation of 52 experts as Delphi panelists in three rounds, we found that social capital (in macro-level as good governance and in micro-level as social capital), performance-based culture, economic opportunities, resources and abilities, and macro-level knowledge management, have the most influence on perception of business environment in Iran. Based on analysis of panelists’ opinions there are consensus and group stability among them. Kendall’s concordance coefficient in third round is nearly high (w=197.0) and the rate of variation in opinions between second and third rounds, is about 4 % . Keywords: Perceived Business Environment, Good Governance, Culture, Economic Opportunities, Resources and Capabilities, Small and Medium Sized Enterprises.

Hydroxysulfonylation of alkenes: an update

RSC Advances

The direct difunctionalization of alkenes recognized as a straightforward tool for the rapid fabrication of complex molecules and pharmaceutical targets by introducing two different functional groups on adjacent carbon atoms of common alkene moieties.