Intuitionistic Fuzzy Time Series Functions Approach for Time Series Forecasting

Fuzzy inference systems have been commonly used for time series forecasting in the literature. Adaptive network fuzzy inference system, fuzzy time series approaches and fuzzy regression functions approaches are popular among fuzzy inference systems. In recent years, intuitionistic fuzzy sets have been preferred in the fuzzy modeling and new fuzzy inference systems have been proposed based on intuitionistic fuzzy sets. In this paper, a new intuitionistic fuzzy regression functions approach is proposed based on intuitionistic fuzzy sets for forecasting purpose. This new inference system is called an intuitionistic fuzzy time series functions approach. The contribution of the paper is proposing a new intuitionistic fuzzy inference system. To evaluate the performance of intuitionistic fuzzy time series functions, twenty-three real-world time series data sets are analyzed. The results obtained from the intuitionistic fuzzy time series functions approach are compared with some other methods according to a root mean square error and mean absolute percentage error criteria. The proposed method has superior forecasting performance among all methods

Nurses' perceptions of aids and obstacles to the provision of optimal end of life care in ICU

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How does puncture modality affect the risk of intraoperative bleeding during percutaneous nephrolithotomy? A prospective randomized trial

Introduction and objectives: To evaluate the possible effects of two different renal puncture techniques (ultrasound-assisted [US-assisted], fluoroscopic-guided [FG]) on the intraoperative hemorrhage risk during percutaneous nephrolithotomy (PCNL). Material and methods: A total of 130 patients with Guy stone scores of 1-2 were prospectively allocated to US-assisted and FG puncture groups by simple randomization. Patients with intraoperative pelvicalyceal rupture and the ones requiring multiple accesses were excluded from the study. Apart from the puncture steps, all other steps of the PCNL procedure were performed with similar techniques by a single surgeon. Patient characteristics, operative data, and postoperative outcomes were compared. Results: A total of 10 patients were excluded from the study due to intraoperative complications after puncture. Patient demographics and stone characteristics were similar between the two groups (p > 0.05). Mean hemoglobin drop was meaningfully greater in the FG group (1.7 g/dL) when compared with US-assisted group (1.3 g/dL) (p 0.05). In addition, the remaining complications classified according to the modified Clavien-Dindo grading system were similar between groups (p > 0.05). Conclusion: US-assisted puncture provides significantly decreased level of hemoglobin drop and radiation exposure time when compared with FG. (c) 2021 AEU. Published by Elsevier Espana, S.L.U. All rights reserved.WOS:0006923238000032-s2.0-8510525420

A multicentre based critical analysis of laser settings during intrarenal laser lithotripsy

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Incentivizing sustainable development: The impact of a recent policy reform on electricity production efficiency in China

China’s rapid economic growth has tremendously accelerated its energy use, calling for a more sustainable supply of scarce and nonrenewable energy. Using a firm‐level dataset of 30 major Chinese electricity utilities from 2010 to 2014, this paper applies a stochastic frontier analysis to determine the utilities’ technical efficiency, incorporating their operational environments related to a recent policy reform to encourage sustainable development. Our main findings are (a) state ownership, consumer density, and a chief executive officer with a science and engineering background are factors that can improve technical efficiency; (b) asset‐related subsidy increases efficiency whereas income‐related subsidy lowers efficiency; and (c) the five largest regional electricity generation firms exhibit above‐average efficiency levels. These results provide evidence that supports the recent Chinese policy reform. The findings also suggest that electricity generation efficiency, which is essential to sustainable economic development, can be improved through performance‐based regulation and incentives.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/151331/1/sd1942.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/151331/2/sd1942_am.pd