Experimental Study on the Mud-Water Inrush Characteristics through Rock Fractures by YanLin Zhao, LianYang Zhang

“…Based on mud viscosity results, physical model tests’ results indicated that the process of mud-water rush can be divided into four stages: that is, the preparation stage of mud-water mixture burst, the seepage period of mud-water mixture inrush, the nonstable period of mud-water mixture outburst, and the stable period of mud-water mixture outburst. …”
Get full text

Stiffness Analysis of a Novel Over- constraint 2UPS+2-RPU Parallel Manipulator by Wang Shusen, Mei Ying, Li Ruiqin

“…The two RPU legs of this PM provide four constraints whereas two of them are over- constraints due to the particular arrangement of the joints in RPU legs. …”
Get full text

The "Low Slow and Small" UAV target detection and tracking algorithm based on improved YOLOv7 and DeepSort by JIAN Yuhong, YANG Huiyue, WANG Xinggang, RONG Yisheng, ZHU Yukun

“…A "low slow small" human-machine data set is constructed with four types of backgrounds: sky, trees, buildings, and dark conditions. …”
Get full text

Piotroski, Graham and Greenblatt: an Empirical Approach to Value Investing in the Brazilian Stock Market by Carlos Henrique Souza Domingues, Alexandre Aronne, Francisco Pereira, Frank Magalhães

“…Parameters of a five-factor model - an extended version of Carhart’s four factor model with the inclusion of an illiquidity factor - are estimated for each of the three portfolios. …”
Get full text

A Semianalytic Method for Vibration Analysis of a Sandwich FGP Doubly Curved Shell with Arbitrary Boundary Conditions by Zhongyu Zhang, Jiayang Gu, Jianjun Ding, Yanwu Tao

“…The main aim of this research is to establish a formulation for free and forced vibration analysis of a new Sandwich FGP doubly curved structure. Four models of Sandwich materials are considered. …”
Get full text

Constructing an Artificial Intelligent Deep Neural Network Battery for Tongue Region Segmentation and Tongue Characteristic Recognition by Tian-Xing Yi, Jian-Xin Chen, Xue-Song Wang, Meng-Jie Kou, Qing-Qiong Deng, Xu Wang

“…Materials and Methods: Five hundred and ninety-four tongue images of adequate quality were used to construct AI models. …”
Get full text

Ambient Vibration Based Damage Diagnosis Using Statistical Modal Filtering and Genetic Algorithm: A Bridge Case Study by S. El-Ouafi Bahlous, M. Neifar, S. El-Borgi, H. Smaoui

“…The damage diagnosis predictions suggest that the diagnosed bridge is damaged in four elements among a total of 168 elements with degrees of damage varying from 6% to 18%.…”
Get full text

Multi-step attack detection method based on network communication anomaly recognition by Ankang JU, Yuanbo GUO, Tao LI, Ziwei YE

“…In view of the characteristics of internal fixed business logic,inbound and outbound network access behavior,two classes and four kinds of abnormal behaviors were defined firstly,and then a multi-step attack detection method was proposed based on network communication anomaly recognition.For abnormal sub-graphs and abnormal communication edges detection,graph-based anomaly analysis and wavelet analysis method were respectively proposed to identify abnormal behaviors in network communication,and detect multi-step attacks through anomaly correlation analysis.Experiments are carried out on the DARPA 2000 data set and LANL data set to verify the results.The experimental results show that the proposed method can effectively detect and reconstruct multi-step attack scenarios.The proposed method can effectively monitor multi-step attacks including unknown feature types.It provides a feasible idea for detecting complex multi-step attack patterns such as APT.And the network communication graph greatly reduces the data size,it is suitable for large-scale enterprise network environments.…”
Get full text

Comparison of fracture toughness values of normal and high strength concrete determined by three point bend and modified disk-shaped compact tension specimens by Stanislav Seitl, José D. Ríos, Hector Cifuentes

“…The modified compact tension test is not proper for quasi-brittle materials due to its complicated shape (steel-concrete interface), but it is easily extracted from drill core and we do not need large amount of material for obtaining fracture properties as we need for e.g. three- or four- point bend test. Since it is a new test method, a wide range of tests is needed to be done before it can be applied. …”
Get full text

Thermodynamics of Acoustic Black Holes in Two Dimensions by Baocheng Zhang

“…We also discuss the specific heat and find that the derivative of the velocity of background fluid can be regarded as a novel acoustic analogue of the two-dimensional dilaton potential, which interprets why the two-dimensional fluid dynamics can be connected to the gravitational dynamics but it is difficult for four-dimensional case. In particular, when a constraint is added for the fluid, the analogue of a Schwarzschild black hole can be realized.…”
Get full text

Proposing a strategic transformation model for universities (Case study: A public university) by Zahra Bagheri, Seyed Javad Hosseininezhad, Nasser Safaie

“…Finally, the transformation model was considered at four levels. Finally, it was observed that knowledge management is at level 1 and affects other barriers. …”
Get full text

Text-Based Price Recommendation System for Online Rental Houses by Lujia Shen, Qianjun Liu, Gong Chen, Shouling Ji

“…Using two chronologically extracted datasets of the same four cities, we revealed important factors (e.g., indoor equipment and high-density area) that positively or negatively affect each property’s price, and evaluated our preliminary and enhanced models. …”
Get full text

Southern Highbush Blueberry Cultivars from the University of Florida by Jeffrey G. Williamson, James W. Olmstead, Gary K. England, Paul M. Lyrene

“…This 10-page fact sheet categorizes southern highbush cultivars into four groups: major cultivars, secondary cultivars, new options, and historical cultivars. …”
Get full text

Becoming Socialized into a New Professional Role: LPN to BN Student Nurses' Experiences with Legitimation by Sherri Melrose, Jean Miller, Kathryn Gordon, Katherine J. Janzen

“…Data was collected from digital recordings of four focus groups held in different cities. Transcripts were analyzed for themes and confirmed with participants through member checking. …”
Get full text

Advanced Network Traffic Prediction Using Deep Learning Techniques: A Comparative Study of SVR, LSTM, GRU, and Bidirectional LSTM Models by Wang Yuxin

“…This study examines the effectiveness of four machine learning models—Support Vector Regression (SVR), Long Short-Term Memory (LSTM), Gated Recurrent Units (GRU), and Bidirectional Long Short-Term Memory (Bi-LSTM)—in forecasting traffic patterns using both web-based and real-world datasets. …”
Get full text

Simulation of the effect of absorption by atmospheric water vapor on the results of non-contact temperature measurements by A. B. Ionov, N. S. Chernysheva, B. P. Ionov, M. A. Ryabova

“…On the basis of the simulation performed using the MATLAB system and the HITRAN molecular spectroscopy database, the values of random and systematic errors are calculated for four measurement situations typical of industrial conditions that differ in the level of absorption by water vapor. …”
Get full text

QCA: Quantum Computational Approach for Internet of Things with 5G Connectivity by Shitharth Selvarajan, Hariprasath Manoharan, Adil O. Khadidos, Alaa O. Khadidos

“…The combined system model is tested under four cases where the comparative outcomes prove that with reduced queue reductions of 12%, it is possible to achieve a maximum throughput of 99%.…”
Get full text

Study of the Kinetics Adsorption of Organic Pollutants on Modified Cellulosic Polymer Using Ultraviolet-Visible Spectroscopy by Djamila Ghemati, Djamel Aliouche

“…The grafting is initiated by ceric ions Ce(IV) and confirmed by infrared spectroscopy analysis (FTIR). …”
Get full text

A Case Study of an Ignored Facet: Metacognitive Experiences by Nesrin Ozturk

“…Data were collected from 187 volunteers via four different tasks with compatibledemands and the Metacognitive Experiences Questionnaire, delivered before and after taskcompletion. …”
Get full text

THE EFFECT OF PERSON-ORGANIZATION FIT ON JOB SATISFACTION: THE ROLE OF WORKPLACE HAPPINESS by Aslıhan Yıldız, Hasan Hüseyin Uzunbacak

“…The survey consists of 20 items about person-organization fit (four items), job satisfaction (five items), workplace happiness (five items), and determining the demographic characteristics of the respondents (6 items). …”
Get full text