Chinese Science Bulletin

This study explores the possibility that fixed points exist in ordered extended b-metric spaces by relaxing the condition of completeness. It presents non-F-contraction mappings with specific monotonicity properties and a new notion of multilinear altering functions. Two main theorems are proved that show the circumstances in which these mappings have fixed points, thus broadening the conventional application of fixed point theorems.

A Triboelectric nanogenerator (TENG) is a capacitive energy harvesting technology based on contact electrification and electrostatic induction. When rubbing two surfaces of triboelectric materials with different electronegativities will generate frictional charges on the surfaces. The rotary TENG model consisting of a rotor and a stator with different dielectric film surfaces has a good energy conversion efficiency level to harvest mechanical energy. An increase in the angular velocity of the RF-TENG rotor can increase the generation of frictional charges by 0.53%. The stability of rotor angul

This review article provides a detailed analysis of the application of machine learning (ML) models in data access control within cloud computing environments, focusing on advancements, challenges, and future research directions. The analysis highlights three main aspects: ML-based access control models, traditional access control mechanisms, and performance evaluation metrics. In ML-based models, Deep Learning (47.06%) and Random Forest (20%) were most frequently adopted, showing superior performance in handling large datasets and real-time data processing. Traditional mechanisms like Attribu

This research aims to examine nitrogen retention, metabolic energy (AMEn) value, performance and carcass quality of broiler chickens using durian seed waste (Durio zibethinus) potential alternatives to replace corn meal in poultry feed. The study employed a completely randomized design (CRD) with five treatments and five replications for each treatment, involving five chickens per replication. The treatments included different levels of durian seed meal (DSM) replacement in the rations replace corn meal: 0%, 10%, 20%, 30%, and 40% or DSM use of 0%; 5%; 10%; 15%; 20% in rations broiler chickens

The Objective of this research is to determine the health problems of cattle based on the perceptions of cattle breeders on people's farms in Tenga District, South Minahasa Regency, North Sulawesi. The material used in the research is cattle breeders who are directly involved in cattle rearing activities. Because the population was quite large, namely 210 out of 2550, sampling was carried out. To determine the size of the sample, use descriptive statistics based on the Slovin formula. The method used in this research is interviews. Data were analyzed descriptively statistically, using a Liker