Results 21 to 30 of about 1,359,822 (262)

New Generalized Contractions by Employing Two Control Functions and Coupled Fixed-Point Theorems with Applications

Mathematics, 2022
In this study, we obtain certain coupled fixed-point results for generalized contractions involving two control functions in a controlled metric space. Additionally, we establish some coupled fixed-point results in graph-enabled controlled metric spaces.
Hasanen A. Hammad, Mohra Zayed
doaj   +1 more source

Some Fixed-Point Results for a -Weak Contraction in -Metric Spaces

Abstract and Applied Analysis, 2012
We introduce the concepts of a -weak contraction mapping of types and and we establish some fixed point theorems for a -weak contraction mapping of types and in complete -metric spaces. Our results generalize several well-known comparable results in
Wasfi Shatanawi, Mihai Postolache
doaj   +1 more source

A new mapping method to estimate exit sites of ventricular arrhythmias using intracardiac echocardiography and M-mode for catheter ablation

Journal of Arrhythmia, 2017
Background: Catheter ablation of premature ventricular complexes (PVCs) has been used as a curative therapy in many cases. Intracardiac ultrasound with a magnetic sensor probe has recently become available for catheter ablation.
Osamu Inaba, MD, Junichi Nitta, Syunsuke Kuroda, Masahiro Sekigawa, Masahito Suzuki, Yukihiro Inamura, Akira Satoh, Mitsuaki Isobe, Kenzo Hirao   +8 more
doaj   +1 more source

An electrooptical muscle contraction sensor [PDF]

, 2010
An electrooptical sensor for the detection of muscle contraction is described. Infrared light is injected into the muscle, the backscattering is observed, and the contraction is detected by measuring the change, that occurs during muscle contraction ...
Giardini, Mario Ettore, Chianura, Alessio   +1 more
core   +4 more sources

Determining fuzzy distance through non-self fuzzy contractions [PDF]

Yugoslav Journal of Operations Research, 2019
In the present work we solve the problem of finding the fuzzy distance between two subsets of a fuzzy metric space for which we use a non-self fuzzy contraction mapping from one set to the other.
Saha Parbati, Guria Shantanu, Choudhury Binayak S.   +2 more
doaj   +1 more source

Safety of Daprodustat for the Treatment of Chronic Kidney Disease Anemia: Final Analysis of a Multicenter Postmarketing Surveillance Study in Japan

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction This final analysis of a multicenter, prospective postmarketing surveillance study evaluated the safety of daprodustat in patients with chronic kidney disease anemia in routine clinical practice in Japan. Methods Patients who initiated daprodustat between September 2020 and July 2022 were registered.
Tadao Akizawa, Kyomi Kanaya, Kiyomi Aizawa, Masanori Onoki, Hirofumi Ozeki, Kazuko Suzuki, Ai Hayashi, Tomohiko Asamura   +7 more
wiley   +1 more source

Fixed Point Results for Almost Contraction Mappings in Fuzzy Metric Space

مجلة بغداد للعلوم
In certain mathematical, computing, economic, and modeling issues, the presence of a solution to a theoretical or real-world problem is synonymous with the presence of a fixed point (Fp) for an appropriate mapping.
Raghad I. Sabri , Buthainah A. A. Ahmed Ahmed   +1 more
doaj   +1 more source

Forecasting the Dialysis Burden in Japan: Validation‐Based Projections of Prevalence and Incidence Through 2050

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin, Berrak Itır Aylı, Nüket Paksoy   +2 more
wiley   +1 more source

S-Pata-type contraction: a new approach to fixed-point theory with an application

Journal of Inequalities and Applications
In this paper, we introduce new types of contraction mappings named S-Pata-type contraction mapping and Generalized S-Pata-type contraction mapping in the framework of S-metric space.
Deep Chand, Yumnam Rohen, Naeem Saleem, Maggie Aphane, Asima Razzaque   +4 more
doaj   +1 more source

Fixed Points Results in G-Metric Spaces

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2019
  In this paper, the concept of contraction mapping on a -metric space is extended with a consideration on local contraction.  As a result, two fixed point theorems were proved for contraction on a closed ball in a complete -metric space.
Salwa Salman Abed, Anaam Neamah Faraj
doaj   +1 more source