Continuous deformation analysis and contact force estimation for pneumatic bending actuators interacting with environment by Namdar Ghalati, Mohammad Hadi, Ghafarirad, Hamed

“…With this method, the variable curvature configuration under different external loads can be modeled. …”
Get full text

Development of a New Type of Incisal Table for Prosthetic Articulators by Alessandro Tasora, Piero Simeone

“…This study illustrates the effectiveness of an advanced incisal table surface, featuring adjustable curvature, in the sake of more accurate articulator kinematics in anterior teeth reconstruction. …”
Get full text

Mirror Prescription Regression: A Differential Interferometric Technique by Brian M. Robinson, Patrick J. Reardon, Joseph M. Geary

“…We present a remote, differential method for measuring the prescription of aspheric mirrors using null interferometry in the center-of-curvature configuration. The method requires no equipment beyond that used in a basic interferometery setup (i.e., there are no shearing elements or absolute distance meters). …”
Get full text

Endodontic treatment of third molars from a conservative perspective. A case report by Luis Darìo Pèrez Villalba, Fernando Marcelo Armijos Briones

“…Intraoral periapical radiography revealed a slight curvature in the mesial and distal canals. A wide trapezoidal access was prepared after the use of intermediate size files for apical preparation. …”
Get full text

Parametric Design and Mechanical Characterization of a Selective Laser Sintering Additively Manufactured Biomimetic Ribbed Dome Inspired by the Chorion of Lepidopteran Eggs by Alexandros Efstathiadis, Ioanna Symeonidou, Emmanouil K. Tzimtzimis, Dimitrios Avtzis, Konstantinos Tsongas, Dimitrios Tzetzis

“…However, excessive curvature has a negative effect on the maximum sustained load. …”
Get full text

Evaluation of Cyclic Fatigue of Hyflex EDM, Twisted Files, and ProTaper Gold Manufactured with Different Processes: An In Vitro Study by Pooja D. Khandagale, Prashant P. Shetty, Saleem D. Makandar, Pradeep A. Bapna, Mohmed Isaqali Karobari, Anand Marya, Pietro Messina, Giuseppe Alessandro Scardina

“…Sixty NiTi rotary instruments of 25 mm length (Hyflex EDM (20), Twisted files (20), and ProTaper Gold (20)) were tested in a metal block with simulated canal having 90° angle of curvature. The study was performed with a specific radius and degree of curvature, i.e., 8 mm radius and 90⁰ angle of curvature, and data obtained were subsequently subjected to statistical evaluation using one-way analysis of variance and Tukey’s post hoc test. …”
Get full text

Approximation and extension of Hermitian metrics on holomorphic vector bundles over Stein manifolds by Deng, Fusheng, Ning, Jiafu, Wang, Zhiwei, Zhou, Xiangyu

“…Nakano) can be extended to the whole bundle with the same curvature negativity.…”
Get full text

Computation of symmetries of rational surfaces by Juan Gerardo Alcázar, Carlos Hermoso, Hüsnü Anıl Çoban, Uğur Gözütok

“…In this paper, we provided, first, a general symbolic algorithm for computing the symmetries of a given rational surface, based on the classical differential invariants of surfaces, i.e., Gauss curvature and mean curvature. In practice, the algorithm works well for sparse parametrizations (e.g., toric surfaces) and PN surfaces. …”
Get full text

Application of Acoustic Emission on the Characterization of Fracture in Textile Reinforced Cement Laminates by J. Blom, J. Wastiels, D. G. Aggelis

“…Additionally, the AE behavior of specimens with different curvature is very indicative of the stress mode confirming the results of modeling. …”
Get full text

Research on time–frequency characteristics of contact force based on wavelet transform by Fang He, Jian Zhang

“…Then, the relationship between the stiffness, stiffness curvature variation, and contact force variation is analysed. …”
Get full text

Shaping Ability of the Root Canal System Using Reciproc and Reciproc Blue in Preparation of Artificial Canals by Hawazin Majdi, Khalid Merdad, Tariq Abuhaimed, Lujain Mirdad, Omar Alkhattab, Abdulaziz Bakhsh

“…Results: Both Reciproc and Reciproc Blue instruments respected the original canal curvature. There were no significant differences between the instruments in terms of maintaining canal curvatures. …”
Get full text

Performance analysis of K-nearest neighbor, support vector machine, and artificial neural network classifiers for driver drowsiness detection with different road geometries by Zhenlong Li, Qingzhou Zhang, Xiaohua Zhao

“…Furthermore, the less the radius of curvature, the more the difference. Third, the performance of K-nearest neighbor, support vector machine, and artificial neural network classifiers were compared and evaluated. …”
Get full text

Optimization of Lateral Collision Risk of Aircraft Based on the Skid-Slip Event Model by Hao Liu, Daiwu Zhu, Xiaofan Xie, Jiuhao Chen, Xiaokang Liu

“…Taking the A320 aircraft and 737-800 aircraft as experimental subjects, the corresponding collision coefficients are imported into software tools for the simulation and the Kalman filtering is combined to verify the smoothness of the front and rear boundary curvatures. The result proves that the event side collision risk of aircraft based on TSRRT is 15% of the traditional event model and the smooth curvature error is reduced by 80% due to the improvement. …”
Get full text

Estimating the Tensile Strength of Ultrahigh-Performance Fiber-Reinforced Concrete Beams by In-Hwan Yang, Changbin Joh, The Quang Bui

“…Therefore, in this study, the tensile behavior was investigated by fitting the analysis result of the moment-curvature curve to the experimental result of a UHPFRC beam. …”
Get full text

An Analytical Step-by-Step Procedure to Derive the Flexural Response of RC Sections in Compression by Piero Colajanni, Marinella Fossetti, Maurizio Papia

“…With respect to the usual numerical approaches, based on the fibre decomposition method, this procedure is based on the use of analytical expressions of the contributions to the equilibrium given by the longitudinal reinforcement and the concrete region in compression, which depend on the neutral axis depth and the curvature at each analysis step. The formulation is developed in dimensionless terms, after a preliminary definition of the geometrical and mechanical parameters involved, so that the results are valid for classes of RC sections. …”
Get full text

Regional hippocampal thinning and gyrification abnormalities and associated cognition in children with prenatal alcohol exposure by Blake A. Gimbel, Jeffrey R. Wozniak, Bryon A. Mueller, Kent A. Tuominen, Abigail M. Ernst, Mary E. Anthony, Erik de Water, the CIFASD, Donovan J. Roediger

“…Results There were significant regional differences in thickness and gyrification across bilateral hippocampi, with the PAE group showing substantially thinner tissue and less curvature than the comparison group, especially in CA1 and subiculum regions. …”
Get full text

A Coons Patch Spanning a Finite Number of Curves Tested for Variationally Minimizing Its Area by Daud Ahmad, Bilal Masud

“…For this, we use an ansatz consisting of the original surface plus a variational parameter multiplying the numerator part of its mean curvature function and minimize with the respect to it the rms mean curvature and decrease the area of the surface we generate. …”
Get full text

Control of local stress in semiconductor silicon structures by S. F. Sianko, V. A. Zelenin

“…The examples of stress calculations in real structures are given.Proposed residual stress calculation methods allow to take into consideration character and curvature form of substrate, and also to estimate their magnitude in real topological elements of semiconductor circuits.…”
Get full text

A Mathematical and Numerically Integrable Modeling of 3D Object Grasping under Rolling Contacts between Smooth Surfaces by Suguru Arimoto, Morio Yoshida

“…Further more, nonholonomic constraints arising from twisting between the two normal axes to each tangent plane are rewritten into a set of Frenet-Serre equations with a geometrically given normal curvature and a motion-induced geodesic curvature.…”
Get full text

Design and Optimization of Iron Cow Stem with Flaps by Finite Element Method and Genetic Algorithm by Khaled Kamal Oude, Ali Adelkhani

“…In this research, two parameters of cross-sectional area and stem curvature were investigated as independent variables. …”
Get full text