Method for assessing testing difficulty in educational sphere by A. S. Sigov, V. Ya. Tsvetkov, I. E. Rogov

“…The logistic function ranges from minus infinity to plus infinity. …”
Get full text

An inverse-linear logistic model of the main sequence by Andrew Duchowski, Krzysztof Krejtz, Cezary Biele, Anna Niedzielska, Peter Kiefer, Ioannis Giannopoulos, Nina Gehrer, Michael Schönenberg

“…A model of the main sequence is proposed based on the logistic function. The model’s fit to the peak velocity-amplitude relation resembles an S curve, simulta- neously allowing control of the curve’s asymptotes at very small and very large amplitudes, as well as its slope over the mid amplitude range. …”
Get full text

Variational Bayesian Quantile Regression with Non-Ignorable Missing Response Data by Juanjuan Zhang, Weixian Wang, Maozai Tian

“…In Bayesian computation, the lack of a conjugate prior for the logistic function poses a significant challenge. Introducing a new Pólya-Gamma variable and employing lower-bound approximation are two common methods for parameter inference in conjugate Bayesian logistic regression. …”
Get full text

Predictive model of small choroidal melanoma progression after eye-saving treatment based on clinical, morphometric and immunological parameters by E. B. Myakoshina, I. G. Kulikova, N. V. Balatskaya, L. A. Katargina, S. V. Saakyan

“…A formula was calculated where P (z) is the value of the logistic function; Z, linear combination of symptoms; bo , intercept (free term), bi – regression coefficients for parameters Zi.P (z) = 1 : 1 + e – b0– b1z1– b2z2– b3z3– b4z4The logistic function increases monotonically and takes the values from 0 to 1 for any b and Z values [P∈ (0;1)]. …”
Get full text

Discrete Optimal Control Method Based on the Optimal Strategy of Fishing by Lichun Zhang, Qingdao Huang

“…The basic construction of the model is the traditional logistic function relating to the growth of fry. The discrete optimal control method for optimal fishing strategy was used to construct the optimal rate of each fishing strategy; the main focus of our work is on the rigorous mathematical analysis of the optimal control problem. …”
Get full text

The Attractiveness for Investments of Urban Municipalities in the Warmińsko-Mazurskie Voivodship by Natalia Świdyńska

“…To achieve this purpose, a logistic function was applied. The results suggest that the level of development of market microclimate in most analyzed urban municipalities will be declining over the following six years. …”
Get full text

Optimization of Biosorptive Removal of Dye from Aqueous System by Cone Shell of Calabrian Pine by Fatih Deniz

“…Dubinin-Radushkevich model and the standard Gibbs free energy change proposed physical biosorption for predominant mechanism. The logistic function presented the best fit to the data of biosorption kinetics. …”
Get full text

3D Flight Path Planning for UAV Based on Improved Particle Swarm Optimization Algorithm by Cunjie Li, Qingli Zhao, Canyi Che

“…Optimization ability can be further improved by the linear transformation operation on the well performing particles. Logistic function is employed to set the dynamic mutation probability. …”
Get full text

Algorithms and Applications in Grass Growth Monitoring by Jun Liu, Xi Yang, Hao Long Liu, Zhi Qiao

“…In this paper, double logistic function-fitting algorithm was used to retrieve phenophases for grassland in North China from a consistently processed Moderate Resolution Spectrodiometer (MODIS) dataset. …”
Get full text

A novel approach for predicting microbe-disease associations by bi-random walk on the heterogeneous network. by Shuai Zou, Jingpu Zhang, Zuping Zhang

“…Microbe similarity and disease similarity were calculated by the Gaussian interaction profile kernel similarity measure; moreover, a logistic function was applied to regulate disease similarity. …”
Get full text

Evaluation method of snow melting performance of composite anti-icing and snow melting asphalt mixture by Wei Zhang, Kaibo Yang, Renshan Chen, Changlin Hou

“…The mathematical model of rolling snow melting based on Logistic function is used for numerical analysis with high reliability and strong stability, and it is also very consistent with the numerical variation law of rolling snow melting.…”
Get full text

MACROECONOMIC SCENARIOS BUILDING AND BANK CREDIT RISK ASSESSMENT, BY THE EXAMPLE OF PSC PROMINVESTBANK by Ye. Linder

“…Dependence of the level of non-payments on macroeconomic indicators is determined by the logistic function, the parameters of which are determined based on the maximum likelihood method on historical data. …”
Get full text

Modeling and Analysis of Resistance-Sensing Characteristics for Two-Way Shape Memory Alloy-Based Deep-Sea Actuators by Jian Guo, Binbin Pan, Weicheng Cui, Huiming Xiang

“…In this study, the logistic function is introduced to improve the kinetic equation of phase transition, and the macromechanical model, the law of resistance, and the resistivity mixing rule are integrated to model and analyze the resistive self-awareness characteristics of two-way shape memory alloy deep-sea actuators. …”
Get full text

Stability Monitoring and Numerical Simulation of Weathering Transition Zones in Dam Slopes of Tropical Islands by Qiaofeng Fan, Huan Sun, Zimin Meng, Yongkang Wang

“…In the numerical simulation, the anchor bolt axial force increased continuously with the increase of lateral displacement of slope. (3) By analyzing the evolution of anchor bolt axial force and pore water pressure in the weathering transition zone, a monitoring criterion for the stability of the weathering transition zone of rock slopes based on the Logistic function was proposed.…”
Get full text

STUDY ON SHOT MOTION CHARACTERISTICS IN PEENING PROCESS WITH HIGH-SPEED CAMERA AND PIV (MT) by FAN JunKai, SUN MingGe, ZHAO Wu, LIU Wei

“…The velocity of shots increases rapidly to a stable value after leaving nozzle, and the velocity variation conforms to the Logistic function. Compared with the empirical formula, the obtained formula of velocity field distribution of shots is more accurate. …”
Get full text

Machine learning in environmental sustainability factor analysis in the agricultural sector by Kukartsev Vladislav, Kozlova Anastasia, Kukarceva Svetlana

“…This method is used to model the probability of a specific event occurring based on independent variables, allowing for the classification and prediction of categorical outcomes. The logistic function was used to estimate probabilities and the relationship between the dependent variable and predictors. …”
Get full text

S-curve analysis and principles of iron ore quality management, Kremenchuk Iron Ore District by O. I. Bilous, T. A. Oliinyk

“…The graphical representation if the trend, also called S-curve for its particular shape, is essentially a logistic function of the indicators of a mining project. …”
Get full text

Dynamics of a Model of Tumor–Immune Cell Interactions Under Chemotherapy by Rubayyi T. Alqahtani, Abdelhamid Ajbar, Eman Hamed Aljebli

“…Tumor growth follows a logistic function, while immune–tumor interactions are modeled using a Hill function for fractional cell death. …”
Get full text

Approximating the Impedance Profile of Multilayer Reference Plane Cut-Out Compensation up to Ka-Band by Vaidotas Barzdenas, Aleksandr Vasjanov, Sen Wang

“…This paper addresses and solves a problem finding the reference plane impedance compensation impedance profile using a modified logistic function approximation and avoiding both the search for complex fringe capacitance equations, when the reference plane impedance compensation cut-out is larger than the cut-out, and solving Maxwell’s equations using finite element methods. …”
Get full text

Behavioral measure of the light‐adapted visual sensitivity of white‐tailed deer by Bradley S. Cohen, David A. Osborn, George R. Gallagher, Robert J. Warren, Karl V. Miller

“…We regressed a best‐fit logistic function to each deer's performance as intensity decreased at a single wavelength, demarcated the sensitivity threshold to that wavelength, and compared deer's sensitivity threshold across wavelengths. …”
Get full text