Fuzzy logic-based algorithm resource scheduling for improving the reliability of cloud computing

Cloud computing is an important infrastructure for distributed systems with the main objective of reducing the use of resources. In a cloud environment, users may face thousands of resources to run each task. However, allocation of resources to tasks by the user is an impossible endeavor. Accurate scheduling of system resources results in their optimal use as well as an increase in the reliability of cloud computing. This study designed a system based on fuzzy logic and followed by an introduction of an efficient and precise algorithm for scheduling resources for improving the reliability of cloud computing. Waiting and turnaround times of the proposed method were compared to those of previous works. In the proposed method, the waiting time is equal to 26.99 and the turnaround time is equal to 82.99. According to the results, the proposed method outperforms other methods in terms of waiting time and turnaround time as well as accuracy

T-duality/plurality of BTZ black hole metric coupled to two fermionic fields

We ask the question of classical super (non-)Abelian T-duality for BTZ black hole metric coupling to two fermionic fields. Our approach is based on super Poisson-Lie (PL) T-duality in the presence of spectator fields. In order to study the Abelian T-duality of the metric we dualize over the Abelian Lie supergroups of the types $(1|2)$ and $(2|2)$, in such a way that it is shown that both original and dual backgrounds of the models are conformally invariant up to one-loop order in the presence of field strength. Then, we study the non-Abelian T-duality of the BTZ vacuum metric coupling to two fermionic fields. The dualizing is performed on some non-Abelian Lie supergroups of the type $(2|2)$, in such a way that we are dealing with semi-Abelian superdoubles which are non-isomorphic as Lie superalgebras in each of the models. In the non-Abelian T-duality case, it is interesting to mention that the models can be conformally invariant up to one-loop order in both cases of the absence and presence of field strength. In addition, starting from the decomposition of semi-Abelian Drinfeld superdoubles generated by some of the {\C}^3 \oplus {\A}_{1,1} Lie superbialgebras we study the super PL T-plurality of the BTZ vacuum metric coupled to two fermionic fields. However, our findings are interesting in themselves, but at a constructive level, can prompt many new insights into supergravity and manifestly have interesting mathematical relationships with double field theory.Comment: 39 pages, 7 Table

Spatial analysis and urban land use planning with emphasis on hospital site selection, case study: Isfahan city

Providing appropriate and equal health care to various classes of society is among the major issues in social welfare. Optimum spatial distribution and equitable locating of health services is important. Due to high population and density in the metropolis of Isfahan, quantitative and qualitative evaluation of hospitals of the city based on the related standards and regulations seems to be necessary. In this study, a combination of GIS and network analysis was used to evaluate the catchment areas of existing hospitals in Isfahan. The results indicated that existing hospitals covered only 23.91 percent of active urban areas at standard time. To promote fair access for citizens and improve the spatial distribution of hospitals based on the related standards and regulations, valuation of urban land for locating new hospital is necessary. Thus, with effective data collection in the form of layers of information such as transportation network, population density, land use, etc. using GIS and AHP model, the authors categorized urban land in 7 categories from poor to very good for construction of hospital

Developing the Strategic Sports Marketing Plan for the Lifeguard and Diving Federation in Islamic Republic of Iran

The purpose of this research is to develop a strategic marketing plan for the Lifeguard and Diving Federation of the Islamic Republic of Iran. The current research is a mixed study with the strategic approach. By conducting a combined method including expert opinion, review of valid documents, and using some matrices related to the formulation of a strategic plan, the formulation of a strategic plan for the marketing of the Lifeguard and Diving Federation has been discussed. The research participants included 15 members of the Board of Directors of the Lifeguard and Diving Federation, managers and sports marketing specialists. In quantitative phase, the measurement tool consisted of a researcher-developed questionnaire that was designed and adjusted using the Delphi method. According to the final score of the evaluation matrix of internal factors (2.47) and the evaluation matrix of external factors (2.44), it was determined that the strategic marketing position of Lifeguard and Diving Federation was in the WT position. The results of SWOT analysis have led to the formulation of 3 SO strategies, 3 ST strategies, 3 WO strategies, and 4 WT strategies. 13 strategies to fulfill the mission of the long-term marketing goals of the federation have been developed and an operational plan has been prepared for each of them. It was concluded that the lifeguard and diving federation needs to use defensive strategies and close to the competitive area (ST) in the field of action

Measuring reliability of aspect-oriented software using a combination of artificial neural network and imperialist competitive algorithm

Aspect-oriented software engineering provides new ways to produce and deliver products and ultimately leads to reliable software. Reliability is an important issue contributing to the quality of software. Thus, software engineers need proven mechanisms to determine the extent of software reliability. In this paper, a method for measuring reliability is proposed which takes advantage of a Multilayer Perceptron Artificial Neural Network (MLPANN). Furthermore, an Imperialist Competitive Algorithm (ICA) is used to optimize the weights to improve network performance. Finally, relying on Root Mean Square Error (RMSE), the proposed approach is compared to a hybrid Genetic Algorithm- Artificial Neural Network (GA-ANN) method. The results show that the proposed approach exhibits lower error

Dynamic Multi-Level Generation and Transmission Expansion Planning Model of Multi-Carrier Energy System to Improve Resilience of Power System

Since the presence of an energy hub (EH) leads to change the expansion planning problem of electrical power system. Therefore, in this study, the nature of optimal generation and transmission expansion planning in the presence of EH is studied. Also, the effect of applying the proposed hub with and without considering energy storages (ESs) as well as the short and long-term corrective actions to reduce the losses and costs are investigated. In addition, demand response and line transmission switching are considered as effective approaches to improve resilience in the proposed dynamic multi-level model. This nonlinear problem is solved sequentially considering the random approach and using differential evolution algorithm (DEA) and the symphony orchestra search algorithm (SOSA). In this paper, the proposed objective functions are studied in five-level and the results show the efficiency of this model in solving the planning problem. The findings show that the proposed planning model decreased capital costs of transmission switches as much as 26%, the capital cost of the transmission as much as 2.29%, the congestion cost as much as 1.8%, The capital cost of generation units as much as 3.75%, the payment capacity paid to generation units as much as 1.8%. Also, the expected profit of the generation units has increased as much as 3.75%. To show the competence of the proposed algorithms, the 400-kV test system with 52 buses in Iran is simulated in MATLAB environment

A rapid and convenient method for synthesis of anilinoquinazoline: an improved synthesis of erlotinib derivatives

4-Anilinoquinazolines have been widely studied as anticancer agents. Despite the widespread utility of this class of compounds, the reported syntheses of 4-anilinoquinazolines require multistep and low-yielding pathways. A novel strategy to prepare 4-anilinoquinazoline derivatives based on the cyclization of anthranilic acid is described. By using of dichloro anthranilic acid we could etherified the quinazoline ring in order to mimic the erlotinib structure as a tyrosine kinase inhibitor. Our new compounds contain different substitutions at the meta-positions of the quinazoline ring instead of the ortho-positions of erlotinib. We synthesized ten new 4-anilinoquinazoline derivatives (17-26) in only 4 steps with desirable yields. Key words: Synthesis, Erlotinib, Anilinoquinazolines, EGFR.</p

Evaluation of the antibacterial and antibiofilm activity of probiotic bacteria against causative bacterial pathogens of dental caries

The most important factor in tooth decay and periodontal disease is the attachment of oral bacteria, especially streptococci, to different levels of the mouth and teeth. Therefore, by changing the microbial ecology in the mouth using probiotic producing bacteria, we can help prevent tooth decay and periodontal infections. This study aimed to evaluate the antibacterial and antibiofilm activities of probiotic producing Lactobacillus against several streptococci that cause tooth decay. Antimicrobial activity and minimal inhibitory concentration (MIC) of probiotic lactobacilli was determined by disk diffusion method and standard broth microdilution, respectively. Antibiofilm activity was assayed by a microtiter-plate screening method. The five isolates of Lactobacillus strains with probiotic properties include Lactobacillus plantarum, Lactobacillus rhamnosus, Lactobacillus reuteri, Lactobacillus fermentum, and Lactobacillus brevis were tested against Streptococcus mutans and Streptococcus sanguinis. Most of tested Lactobacillus strain at concentrations above 125 µg/mL showed antibacterial properties. Also, examination of the MICs showed that probiotic bacteria had greater effects on S. sanguinis. While, the tested probiotic bacteria did not show a significant antibiofilm effect. Our results suggest that lactobacilli with potential probiotic properties can be effective used for eliminating oral streptococcal colonization