The main objective of this study is to evaluate and compare the performance different machine learning (ML) algorithms, namely, Artificial Neural Network (ANN), Extreme Learning Machine (ELM), Boosting Trees (Boosted) considering influence various training testing ratios in predicting soil shear strength, one most critical geotechnical engineering properties civil design construction. For aim, a database 538 samples collected from Long Phu 1 power plant project, Vietnam, was utilized...

The principal purpose of this work is to develop three hybrid machine learning (ML) algorithms, namely ANFIS-RCSA, ANFIS-CA, and ANFIS-SFLA which are a combination adaptive neuro-fuzzy inference system (ANFIS) with metaheuristic optimization techniques such as real-coded simulated annealing (RCSA), cultural algorithm (CA) shuffled frog leaping (SFLA), respectively, predict the critical buckling load I-shaped cellular steel beams circular openings. For purpose, existing database tests on were...

In this study, a novel hybrid surrogate machine learning model based on feedforward neural network (FNN) and one step secant algorithm (OSS) was developed to predict the load-bearing capacity of concrete-filled steel tube columns (CFST), whereas OSS used optimize weights bias FNN for developing (FNN-OSS). For achieving goal, an experimental database containing 422 instances firstly gathered from literature develop FNN-OSS algorithm. The input variables in contained geometrical...

In this paper, an extensive simulation program is conducted to find out the optimal ANN model predict shear strength of fiber-reinforced polymer (FRP) concrete beams containing both flexural and reinforcements. For acquiring purpose, experimental database 125 samples collected from literature used best architecture ANN. database, input variables consist 9 inputs, such as ratio beam width, effective depth, span compressive concrete, longitudinal FRP reinforcement ratio, modulus elasticity...

In this paper, the main objectives are to investigate and select most suitable parameters used in particle swarm optimization (PSO), namely number of rules (nrule), population size (npop), initial weight (wini), personal learning coefficient (c1), global (c2), velocity limits (fv), order improve performance adaptive neuro-fuzzy inference system determining buckling capacity circular opening steel beams. This is an important mechanical property terms safety structures under subjected loads....

Trong mạng lõi 5G, các chức năng có thể được phân chia tỉ lệ (scaling-out/in) một cách linhhoạt để điều chỉnh dung lượng cho lát (network slices). Quy trình tự động nângcao hiệu suất bằng mở rộng quy mô (scaling-out) phiên bản và giảm chi phí vậnhành (scaling-in) bản. Các 5G phải triển khai/tắtđồng thời nhiều NFIs, thường xem xét trong khối (block) NSSI. Vì vậy,việc thiết lập số cần khai đồng thời, cũng như tắt khikhông cầu sử dụng sẽ ảnh hưởng đáng kể đến quả của hệ thống, đảm bảochất dịch...

Abstract Study question Does the infusion of autologous platelet rich plasma (PRP) to uterus improve outcomes embryo transfer thin endometrial or recurrent implantation failure (RIF) patients? Summary answer Autologous PRP uterine may result (ET) in RIF group and thin/scarred group. What is known already has been proposed various treatment procedures. In infertility, several trials have reported an improvement thickness patients having endometrium thus previously cancelled ET cycles. Uterine...

High damping rubber bearings (HDRB) is an efficient technique developed to prevent or minimize damage buildings during earthquakes. HDRB with high flexibility and capacity have been widely applied in Japan. The will be able move the structures’ natural refequencies shirk resonance excitation, while their capability can reduce corresponding displacement. In seismic design codes (AASHTO 2010, JRA 2004), parameters of are identified from a stress-strain loop sinusoidal bearing experiment...

The paper presents the analysis of impact wind loads on large plate billboards, how to determine and convert input data repeat cycle conversion ratios in calculating load between Vietnam standards foreign standards. In addition, article notes calculation according different standards, thereby giving process determination standard TCVN 2737-1995, European EN 1991- 1-4 AmericanASCE / SEI 7-05 for billboard advertising by MathCad software, presenting calculations a specific billboard, from...

A research on numerical modeling of arch dam with contraction joints under static and seismic conditions is performed in this study. Discussions the use adaptive finite element method consideration “equivalent stress” simulating technique for contact between segments are presented. case study stress analysis Namchien hydropower Vietnam given. The results showed that model established paper effective to simulate complex physical models. stability easily by using self-adapting equivalent...

In arch dam design, every country has it own technical design standard. Vietnam, the standard is far lessconprehensive compared with those of United States and China. This research focus on analysis differences between three above systems, in order to give some suggestions improve Vietnamese for dam. Differnces stability strength under static seismic conditions discussed depth. A case study Namchien which being constructed presented. The results show that if based standard, should be paid...

This paper shows how to build stiffness matrix and load vector by energy method for taper, I section elements includes the effects of shear semi-rigid connection, use structural analysis problem. Mathematical model is exponential. Thereby, programming program taper verify results matrix, as well assessing connection force displacement this element.

The report presents a new method for linear analysis of continuous curved flat bar, subject to any load in space. This is combination improving the expression and displacement at two ends bar element Transfer Matrix Method Finite Element (TMMFEM), called transfer improvements. research results are build math problems programming with Matlab, verify according SAP2000 oftware « Strength materials » documents.

The paper aims to analyze the elasticity-plasticity of a flat steel frame structure with beam-column connection that is semi-rigid connection; three-spring link models (two linear displacement springs and one rotating spring); It includes hard areas at position, an ideal flexible-plastic material model. Based on that, it developed algorithms by PTHH method using step-by-step applying load programmed determine displacement-internal force when make nonlinear in MATLAB programming language;...

This article presents the design methods for concrete filled circular columns subjected to long-term axial compression and bending. . There are two approaches: stress-based strain-based formulations. Both approaches specified in Russian Code, SP 266.1325800.2016, European EN 1994-1-1:2004. A numerical example shows procedures calculate strength of a given column according different Codes, influence parameters such as steel contribution ratio, relative slenderness results consider.

In this paper, the author introduces beam – column connections, steel concrete composite beams and floor element in frame structures, shows how to determine stiffness connections of typical - according European standards. Survey parameters affecting, including: slab thickness; section area module elasticity reinforcing bars; distance anchor, order clarify influence on structures.