The maximum cable tension is a crucial parameter in the design of cable-driven parallel robot (CDPR) since various mechanical components CDPR must be designed to safely withstand loads induced by this tension. For CDPRs having number cables at least equal its degree freedoms (DOFs), article deals with determination smallest vectors allowing required wrench set feasible. problem formulated as minimization infinity norm under linear inequality constraints, which include wrench-feasibility...

Breast cancer is a significant public health concern worldwide, and early detection crucial for its treatment. Although breast has been extensively studied, there still room improvement in classification accuracy. This study aims to improve the accuracy of by applying information gain feature selection machine learning techniques Wisconsin Diagnostic Cancer (WDBC) dataset. The method utilized reduce characteristics, algorithms such as support vector (SVM), naive Bayes (NB), C4.5 decision...

Pre-shaped microbeams, curved or inclined, are widely used in MEMS for their interesting stiffness properties. These mechanisms allow a wide range of positive and negative tuning direction motion. A mechanism pre-shaped beams with opposite curvature, connected parallel configuration, can be electrothermally tuned to reach near-zero behavior at the as-fabricated position. The simple structure helps incorporate tunable spring different designs accelerometers, even transduction technologies....

The problem of multicollinearity among independent variables in a regression model was addressed this study using Partial Least Squares (PLS) and Principal Component Analysis (PCA). influence exerted by can deteriorate the results modeling; that is, it makes traditional technique OLS less reliable. research is centered on applying advanced algorithms for (SIMPL O-PLS) as well PCA (NIPALS SVD) real-life data scenarios, integrating genetic algorithm (GAs) with these to optimize predictive...

In this paper, we develop original analytical electro-thermal and thermo-mechanical models for the U-shaped actuator. The dynamics of temperature distribution displacement are obtained as a direct relationship between system's dimensions, material properties electrical input. model provides an exact solution hybrid partial differential equations that describe behaviour each actuator's three connected arms. is using new calculation method allows representation integrable function by infinite...

In this paper, we investigate the effect of high modes buckling on mechanical behavior a pre-shaped curved beam. first stage, presented modeling develops further snapping forces solution and bistability conditions in order to include buckling. second develop analytical stresses inside beam during deflection between two sides The with or without antisymmetric modes, force characteristics, are described paper based mathematical approach provide clear physical understanding its design...

Abstract We derive the snap-through solution and governing snapping force equations for an arbitrarily preshaped beam deflected under a mid-length lateral point force. The exact is obtained based on classical theory of elastic beams as superposition initial shape modes buckling. Two kinds solutions are identified depending axial level. two solutions, bifurcation conditions, bistability derived discussed. then calculated common shapes, curved (first buckling shape) inclined one (V-shape). In...

This paper deals with the optimization of geometry a Cable-Driven Parallel Robot (CDPR) dedicated to large-scale construction applications. Since maximum cable tension is critical parameter in design CDPR components, optimized by minimizing lowest that ensures validity wrench-feasibility constraints. The geometric procedure used this consists two phases, connections selected first phase followed second where parameters are optimized. result an original fully-constrained geometry.

The offshore Matruh and Herodotus basins of NW Egypt represent an underexplored region the Eastern Mediterranean with only two wells drilled along margin to date. Canyon segment in broader Basin appears be unique having a large gravity-driven linked system detached on shale. updip extension blocks bounded by listric normal faults (rafts) onshore part transitions into downdip contraction toe-thrust imbrications ultra-deep water Basin. structures above prominent Cretaceous shale detachment...

Abstract Two mesoporous gallosilicates with extra‐small particle size were synthesized via wet impregnation starting from lactate or citrate‐type Ga(III) precursors. The structural and textural properties of the materials extensively characterized by different techniques. Both consist nanosized particles display a remarkably high surface area pore distribution typical MCM‐41‐like materials. two solids tested as catalysts in acetalization glycerol acetone to produce solketal...

A profile of the microbial safety cheese in Canada was established based on analysis 2955 pasteurized and raw-milk cheeses tested under Canada's National Microbiological Monitoring Program (NMMP) 2009 Targeted Survey Program. 97.8% NMMP 99.6% samples were assessed as being satisfactory microbiological safety. Under NMMP, Salmonella spp. detected 2 samples, Listeria monocytogenes 15 no Escherichia coli O157/H7:NM (non-motile) detected. Cheese having unsatisfactory levels S. aureus generic E....

A tunable symmetric bistable micro-machined mechanism with monolithic structure is presented. The consists of two sets pre-shaped beams similar properties and dimensions; however one set curved opposite to the other. bistability induced by creating a negative stiffness behavior at initial position moving part break its stability. This possible certain electrothermal axial loading both beam sets. active respect position. distance between stable positions applied voltages. can be used as...

Beam electrothermal actuators amplify the thermal expansion of pre-shaped beams and use symmetrical structure to create a linear motion. These actuators, including V Z shapes, are widely used in microsystems. Explicit analytical expressions derived this paper governing structural deformation these due interaction with external lateral load. The developed for an arbitrary initial shape actuator symmetry uniform cross-section. modeling is based on elastic beam theory, all modes buckling...

Numerous deep-water play types have been identified along the transform margin of NW Egypt. A large segment offshore Matruh Basin has related to a prominent shale décollement within Canyon. The footwalls growth faults associated with detachment provide fault-controlled three-way closures very similar well-known rafts in Lower Congo West Africa. As updip extension transitions downdip contraction, some thin-skinned toe-thrust imbrications can be found ultradeep-water part Basin. Another...

This article deals with the optimization of main element a digital microrobot, which is bistable module. module consists curved beams and electrothermal actuators. A design study beam actuator presented in order to achieve limits line miniaturization. Finally, An for dimensions proposed respect microfabrication elastic limits.