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The rapid development of high-speed railway tunnels has resulted in the increased application of ballastless track slabs. However, floor heave induces ballastless track slab deformation as a result of surrounding rock pressure, imposing serious …

Social networks have become a major source of news with millions of people writing and trading news daily. At the occurrence of any event, news spread faster on social networks compared to other news sources, which makes them a good source for …

Even though the concept of Corporate Social Responsibility (CSR) has been applauded for several decades, the concept of stakeholder engagement is relatively new to the Ghanaian mining sector. This study investigates the CSR process of an …

Short-term passenger flow prediction in urban rail transit plays an important role because it in-forms decision-making on operation scheduling. However, passenger flow prediction is affected by many factors. This study uses the seasonal …

Recently, unmanned aerial vehicle (UAV) acts as the aerial mobile edge computing (MEC) node to help the battery-limited Internet of Things (IoT) devices relieve burdens from computation and data collection, and prolong the lifetime of operating.

In literature, the machine learning-based studies of sentiment analysis are usually supervised learning which must have pre-labeled datasets to be large enough in certain domains. Obviously, this task is tedious, expensive and time-consuming to …

In this study, a village input–output table (VIOT) is built from household survey data from a rural village in a developing country to capture the interdependency between households through their transactions in 2016. This VIOT is a simple, but …

Given the global lack of effective analysis methods for the impact of design parameter tolerance on performance deviation in the vehicle proof-of-concept stage, it is difficult to decompose performance tolerance to design parameter tolerance. This …

With the continued appeal and adoption of cloud computing, an assessment of cloud run costs and migration affordability prior to adoption would assist enterprises that have several legacy applications targeted for cloud migration. However, as …

Knowledge graphs are a powerful concept for querying large amounts of data. These knowledge graphs are typically enormous and are often not easily accessible to end-users because they require specialized knowledge in query languages such as …

It is evident that developing more accurate forecasting methods is the pillar of building robust multi-energy systems (MES). In this context, long-term forecasting is also indispensable to have a robust expansion planning program for modern power …

The demand for computational resources is steadily increasing in experimental high energy physics as the current collider experiments continue to accumulate huge amounts of data and physicists indulge in more complex and ambitious analysis …

In stock farming, the body size parameters and weight of yaks can reasonably reflect the growth and development characteristics, production performance and genetic characteristics of yaks. However, it is difficult for herders to measure the body …

The properties of mortars containing waste glass powder (WGP) as a cement substitute for sustainable construction at various high temperatures were investigated. For this purpose, specimens from four mixtures with WGP at various percentage levels …

Large pressure equipment needs to be tested regularly to ensure safe operation; wall-climbing robots can carry the necessary tools to inspect spherical tanks, such as cameras and non-destructive testing equipment. However, a wall-climbing robot …

The current research of tire aerodynamics mainly focus on the isolated and simplified tread tire. Compared with the real complex pattern tire, the tread pattern structure and deformed profile of a loaded tire has a greatly influence on tire …

With the continuous expansion of the application range of microelectromechanical systems, microdevice forming technology has achieved remarkable results. However, it is challenging to develop new microforming processes that are low cost …

The drug transport mechanism in the biological tissue can be modelled for its effective and efficient performance. Mathematics is playing a key role in almost all biomedical research problems including drug kinetics. A mathematical model based on …

The existing research on SiCp/Al composite machining mainly focuses on the machining parameters or surface morphology. However, the surface quality of SiCp/Al composites with a high volume fraction has not been extensively studied. In this study …

The main purpose of this research article is to construct a Dunkl extension of ( p , q ) $(p,q)$ -variant of Szász–Beta operators of the second kind by applying a new parameter. We obtain Korovkin-type approximation theorems, local approximations …

A fan page is a kind of a social network. Social network marketing (SNM) is a form of Internet marketing involving the creation and sharing of content on social media networks to achieve marketing and selling goals. In addition, precise SNM …

The additive manufacturing of continuous fiber composites has the advantage of a high-precision and efficient forming process, which can realize the lightweight and integrated manufacturing of complex structures. However, many void defects exist …

In the presence of power disturbance, the test accuracy of power is not good, in order to improve the performance of power testing, it is necessary to carry out the power disturbance detection design. A power disturbance detection algorithm based …

High-tech industrial agglomeration is conducive to boosting technological progress, promoting industrial structure upgrading and realizing economic transformation, and certainly affects the overall industrial environmental efficiency. However, few …

A novel two-dimensional ultrasonic surface burnishing process (2D-USBP) is proposed. 7075-T6 aluminum samples are processed by a custom-designed 2D-USBP setup. Parameter optimization of 2D-USBP is conducted to determine the best processing …

Prestressed segmentally constructed balanced cantilever bridges are often subjected to larger deflections than those predicted by calculations, especially for long-term effects. In this paper, the case of modular balanced cantilever bridges, which …

As the scale of datasets used for big data applications expands rapidly, there have been increased efforts to develop faster algorithms. This paper addresses big data summarisation problems using the submodular maximisation approach and proposes …

This project is funded by the US National Science Foundation (NSF) through their NSF RAPID program under the title “Modeling Corona Spread Using Big Data Analytics.” The project is a joint effort between the Department of Computer & Electrical …

Various recommender systems (RSs) have been developed over recent years, and many of them have concentrated on English content. Thus, the majority of RSs from the literature were compared on English content. However, the research investigations …

By introducing a kernel involving an exponent function with multiple parameters, we establish a new Hilbert-type inequality and its equivalent Hardy form. We also prove that the constant factors of the obtained inequalities are the best possible.

Analyzing ego networks to investigate local properties and behaviors of individuals is a fundamental task in social network research. In this paper we show that there is not a unique way of defining ego networks when the existence of edges is …

To apply the internet of things (IoT) to the medical operation system of the new era under the e-commerce online to offline (O2O) mode to realize the intelligent management of medical operation, first, the theoretical basis of the medical …

Cooperation between the mobile edge computing (MEC) and the mobile cloud computing (MCC) in offloading computing could improve quality of service (QoS) of user equipments (UEs) with computation-intensive tasks. In this paper, in order to minimize …

This paper proposes a new algorithm for the blockchain system based on multi-chain storage for CPS under edge cloud computing, in which the nodes of the system are divided according to the relationship of communication tightness.The experimental …

The leading approaches in Machine Learning are notoriously data-hungry. Unfortunately, many application domains do not have access to big data because acquiring data involves a process that is expensive or time-consuming. This has triggered a …

The topic of financial sustainability in microfinance institutions has become more important as an increasing number of Microfinance Institutions (MFIs) seek operational self-sufficiency, which translates into financial sustainability. This study …

Pulse wave velocity (PWV) refers to the conduction velocity of the pressure wave propagated by the wall of the aorta when the human heart beats. In most cases, people regard it as an important indicator for evaluating the stiffness of arteries. In …

Interference is an important limitation in many communication systems. It has been shown in many situations that the popular Gaussian approximation is not adequate and interference exhibits an impulsive behavior. This paper surveys the different …

In view of the low accuracy and poor processing capacity of traditional power equipment image recognition methods, this paper proposes a power equipment image recognition method based on a dual-channel convolutional neural network (DC-CNN) model …

Information networks provide a powerful representation of entities and the relationships between them. Information networks fusion is a technique for information fusion that jointly reasons about entities, links and relations in the presence of …

Modern database systems desperate for the ability to support highly scalable transactions and efficient queries simultaneously for real-time applications. One solution is to utilize query optimization techniques on the on-line transaction …

Probabilistically checkable proofs (PCPs) can be verified based only on a constant amount of random queries, such that any correct claim has a proof that is always accepted, and incorrect claims are rejected with high probability (regardless of …

Shear wave velocity is directly related to earthquake energy characteristics and is a useful parameter in estimating the surface motion parameters. Shear wave velocities can be obtained from geophysical investigation or by empirical correlations.

Owing to their lower carbon footprint and efficient performance compared to portland cement (PC), alkali-activated binders (AAB) show promising potential as an alternative to PC. The present paper investigates the high-temperature performance of …

In this study, the age-dependent splitting and flexural tensile strength have been investigated by incorporating the various percentages of fly ash in the plain concrete mixes. The partial replacement of cement by fly ash was varied from 0 to 60% …

Today, the world is looking for materials that can be effectively used in construction without affecting environmental sustainability. The use of agro-industrial wastes as a constructional material will support in either way of waste handling and …

Resolution over linear equations is a natural extension of the popular resolution refutation system, augmented with the ability to carry out basic counting. Denoted $${\rm Res}({\rm lin}_R)$$ Res ( lin R ) , this refutation system operates with …

Rigid pavement is one of the pavement methods used specially in high traffic zones. Up till now, Portland cement concrete (PCC) is the most commonly used material for rigid pavement. One of the problems that faces PCC is the allowable spacing for …

The main purpose of this study is to introduce a noncontact and nondestructive methodology to determine the volumetric properties of irregular shaped bulk soil specimens using close-range photogrammetry. To this accomplishment, 3D models of soil …

Fine-grained soils, according to ASTM standard, are soils in which more than 50% of the particles pass-through sieve number 200 (< 0.075 mm). However, Atterberg limits tests used in designating fine-grained soils as silt or clay have been …

For the friction pairs, adding suitable lubricating media is one of the key technologies to ensure their safe, reliable and efficient operation. With the development of industry and aerospace technology, extreme working conditions such as high …

Coronavirus pandemic is the most catastrophic phenomena of nature. In a major disaster which affected substantially to human lifecycle and property loss. Instant rehabilitation for the people affected with coronavirus was essential. As an …

Man-made improvements to the coastal areas can have a drastic short- and long-term impact on the sediment balance. This paper investigates the morphological changes at the Blue beach, Gaza Strip, Palestine. The Blue Beach resort is extremely …

Type of activity is an important aspect that influences the travel behavior of the trip makers. The present study uses the concept of an acceptable trip distance to compare the walking characteristics across subgroups of various socio-demographic …

We consider the following basic question: to what extent are standard secret sharing schemes and protocols for secure multiparty computation that build on them resilient to leakage? We focus on a simple local leakage model, where the adversary can …

Temporal Conceptual Model can enhance the long-term management of contaminated Complex Sites. This type of contaminated land model is defined here as the sequential or combined representation over time of single time conceptual models (named here …

Cloud computing environment is getting more interesting as a new trend of data management. Data replication has been widely applied to improve data access in distributed systems such as Grid and Cloud. However, due to the finite storage capacity …

We study the space-time finite element discretizations for time fractional parabolic integro-differential equations in a bounded convex polygonal domain in $${\mathbb {R}}^d (d=1,2,3)$$ R d ( d = 1 , 2 , 3 ) . Both spatially semidiscrete and fully …

Local meshless methods using RBFs augmented with monomials have become increasingly popular, due to the fact that they can be used to solve PDEs on scattered node sets in a dimension-independent way, with the ability to easily control the order of …

This work considers multirate generalized-structure additively partitioned Runge–Kutta methods for solving stiff systems of ordinary differential equations with multiple time scales. These methods treat different partitions of the system with …

In this paper, we demonstrate that the explicit ADER approach as it is used inter alia in Zanotti et al. (Comput Fluids 118:204–224, 2015) can be seen as a special interpretation of the deferred correction (DeC) method as introduced in Dutt et al.

Identifying unknown differential equations from a given set of discrete time dependent data is a challenging problem. A small amount of noise can make the recovery unstable. Nonlinearity and varying coefficients add complexity to the problem. We …

The task of repeatedly solving parametrized partial differential equations (pPDEs) in optimization, control, or interactive applications makes it imperative to design highly efficient and equally accurate surrogate models. The reduced basis method …

In this paper, we present a new nonintrusive reduced basis method when a cheap low-fidelity model and an expensive high-fidelity model are available. The method employs proper orthogonal decomposition method to generate the high-fidelity reduced …

The problem of hazard rate estimation under right-censored assumption has been investigated extensively. Integrated square error (ISE) of estimation is one of the most widely accepted measurements of the global performance for nonparametric kernel …

Water is essential for the survival of mankind on the surface of the Earth. The surface water bodies which act as a source of drinking water are prone to pollution in the current days. As a result people rely on groundwater sources for drinking …

This paper is an attempt to compute social benefit cost analysis (SBCA) for the proposed electric bus rapid transit system (e-BRTS) in Ahmedabad. Governments and urban local bodies in many countries including India are exploring the possibility of …

Depiction of terrestrial water flux constituents in respect of geospatial distribution and consecutive disparity are important for water resources assessment. Due to the excessive and indiscriminate withdrawal of groundwater (GW), the water table …

We present an arbitrary high-order local discontinuous Galerkin (LDG) method with alternating fluxes for solving linear elastodynamics problems in isotropic media. Both the semi-discrete analysis and fully discrete analysis for a leap-frog LDG …

This paper proposes a comparison of the numerical aspect and efficiency of several low rank approximation techniques for multidimensional data, namely CPD, HOSVD, TT-SVD, RPOD, QTT-SVD and HT. This approach is different from the numerous papers …

A multilayered rectangular flexoelectric structure is considered. This composite has a unit cell of N-constituents which belong to the cubic crystal symmetry. Using the two-scale asymptotic homogenization method, explicit expressions of the local …

An implicit constitutive relation is proposed to study transversely isotropic bodies. The relation is obtained assuming the existence of a Gibbs potential that depends on the second Piola–Kirchhoff stress tensor, from which the Green Saint-Venant …

The mechanical properties of materials such as elastic tangential modulus (Et) and unconfined compressive strength (UCS) can be used to predict their performance during service life. This paper utilizes gene expression programming (GEP) as an …

Film quality analysis is of more considerable significance due to its diversified applications in various fields of technology. The present work reports the speckle interferometric analysis of the argon pressure-induced surface roughness …

Cyber technologies are offering new horizons for quality control in manufacturing and safety assurance in-service of physical assets. The line between non-destructive evaluation (NDE) and Industry 4.0 is getting blurred since both are sensory …

Nowadays the construction process is very much challenging and difficult for the civil engineers. The reinforced concrete (RC) is the most essential and extensively used material which possesses various important properties like compressive and …

The application of stone columns increases the stiffness of soft soils which contributes to its load carrying capacity and accelerates the process of consolidation leading to reduction in settlement. However, under external loading, squeezing of …

Reinforced concrete bridges are iconic parts of modern infrastructure. They are designed for a minimum service life of 100 years. However, environmental factors and/or inappropriate use might cause overload and accelerate the deterioration of …

The advantage of utilizing stone columns in very low bearing capacity of soil has been demonstrated as an effective strategy to improve the load bearing characteristics of soils. For stone columns, the load bearing capacity primarily relies upon …

Mechanical earth model is a numerical representation of the stress state, pore pressure and rock mechanical properties. While the different parameters in the MEM are interconnected in various ways, they fundamentally stem from the same basic set …

The acoustic emission (AE) technique was employed to monitor crack formation in the water-saturated ceramic material subjected to freeze–thaw cycles. The samples with water accessible porosity ranging from 6 to 50 vol% were prepared from the …

In this paper, 3D modeling was performed to understand the effects of excavation of twin tunnel on a single pile in weathered residual soil. The effect of various tunnel depths on pile was evaluated in two cases of Z/Lp = 0.8 (tunnels near the …

To transition from control theory to real applications, it is important to study missions such as Swarm Search and Service (SSS) where vehicles are not only required to search an area, but also service all jobs that they find. In SSS missions …

Boundary layers between different materials in fluid-carrying housing structures must be designed to be media-tight. The Technische Universität Braunschweig and Volkswagen investigate the air tightness of thermoset and aluminum joints. Examplary …

Mobility in Germany is undergoing a period of disruptive change with the move toward electrification, hydrogen and synthetic carbon-neutral fuels. Most people are familiar with these developments, but fewer are aware that electric cars can help to …

Cloud computing has been one of significant domains of processing service in social networks like the internet and local networks in recent years. One of the main problems in cloud computing is placing a virtual server onto physical servers. This …

Robust discretization methods for (nearly-incompressible) linear elasticity are free of volume-locking and gradient-robust. While volume-locking is a well-known problem that can be dealt with in many different discretization approaches, the …

Adaptive time stepping methods for metastable dynamics of the Allen–Cahn and Cahn–Hilliard equations are investigated in the spatially continuous, semi-discrete setting. We analyse the performance of a number of first and second order methods …

We discretize the stochastic Allen–Cahn equation with additive noise by means of a spectral Galerkin method in space and a tamed version of the exponential Euler method in time. The resulting error bounds are analyzed for the spatio-temporal full …

In this work, we consider the general family of the so called ADER $$P_NP_M$$ P N P M schemes for the numerical solution of hyperbolic partial differential equations with arbitrary high order of accuracy in space and time. The family of one-step …

In this paper, with the aid of the Mathematica package, several classes of exact analytical solutions for the time-fractional $$(2+1)$$ ( 2 + 1 ) -dimensional Ito equation are obtained. To analytically tackle the above equation, the Kudryashov …

The Mittag-Leffler function is computed via a quadrature approximation of a contour integral representation. We compare results for parabolic and hyperbolic contours, and give special attention to evaluation on the real line. The main point of …

The challenges presented by the global pandemic and slump in oil prices have imposed costly avoidance measures and delayed project timeliness, but it also has created the opportunity for innovation conditions in industrial non-destructive testing.

The growing number of latency-critical applications are posing novel challenges for network operators, cloud/hosting companies, and application providers. Edge Computing is the strongest candidate for providing low-latency responses, but it is not …

This study investigates pharmaceutical polymers (Soluplus®, HPMCAS, and Eudragit® E100) and supercritical CO2-assisted process for preparation of floating valsartan delivery systems. Tested process (at pressure of 30 MPa and temperature of 100 °C …

Green polymeric composites, which are obtained from cheap, renewable, and environmentally friendly natural resources that can replace petrochemicals, have gained great attention from the researchers in recent years. To that end, we aimed at …

Herein, the coherence combination is simply the sum of two or more diffractive elements to achieve a novel diffractive element with its unique behavior. Concerning this concept, we aim to demonstrate how a long-depth bifocal diffractive lens is …

Mechanical contacts between nominally flat surfaces occur everywhere. Due to the microscopic roughness on most surfaces, real contact is only made in isolated, load-bearing patches in the interface, where local compressive stresses can exceed the …

Mobility in Germany is undergoing a period of disruptive change with the move toward electrification, hydrogen and synthetic carbon-neutral fuels. Most people are familiar with these developments, but fewer are aware that electric cars can help to …

The development of aluminum application technologies is a continuous engineering process to minimize carbon footprint and passenger car weight. Seiichi Hirano, Member of the Board of the UACJ Corporation, a Japanese aluminum components supplier …

Quick-setting grout has time-varying characteristics, and the space porosity of the injected medium changes after being grouted. The above two points need to be considered when loose and broken coal rock masses are grouted with rapid-setting …

To improve the effectiveness of the directional-predetermined crack blasting in the weak and alternate composite roof, this paper took the coal-containing composite roof of the 12201 working face of Halagou Coal Mine as the engineering background …

With the rapid evolution of electric vehicles and smart grids, the demand of high energy density storage devices is growing in modern society. Lithium-ion (Li-ion) batteries cannot meet the demand due to their energy density limitations.

In recent years, face synthesis and manipulation technology have been developed rapidly, and now it is feasible to synthesize extremely realistic fake face videos, which can easily deceive existing face recognition systems. Due to the high quality …

Compounds from the series La0.8-xNdxCa0.2FeO3-δ (0.1 ≤ x ≤ 0.7) were synthesised by a sol–gel route. X-ray diffraction and Rietveld analysis showed that materials with 0 ≤ x ≤ 0.6 crystallize as single-phase orthorhombic perovskites. The smaller …

Ag sinter joining technology is emerging as a die attach material for next-generation power modules in high-temperature applications. Thermal shock test has revealed that the fracture characteristics and reliability of sintered Ag joint were …

Mortality deceleration, or the slowing down of death rates at old ages, has been repeatedly investigated, but empirical studies of this phenomenon have produced mixed results. The scarcity of observations at the oldest ages complicates the …

A botnet is a network of remotely-controlled infected computers that can send spam, spread viruses, or stage denial-of-service attacks, without the consent of the computer owners. Since the beginning of the 21st century, botnet activities have …

Selective laser sintering (SLS) is an additive manufacturing (AM) process, which is widely used for fabrication of end used products, directly from computer aided design (CAD) data. SLS process is usually used in different areas such as …

Spherical AlN powders with micrometer size have attracted great attention owing to their good fluidity and dispersity. However, the industrial preparation methods usually require high temperature and long soaking time, which lead to the high cost …

Numerical studies on internal fire whirls (IFW) generated in a vertical shaft model with a single corner gap were reported in this paper. The generation of IFW, burning rate of fuel and temperature were studied experimentally first. Numerical …

Due to the development of anti-electronics devices, network technologies and small-scale communication equipment, much attention has been focused on microwave absorbing materials to solve the growing problems of electromagnetic interference and …

Nanoscale δ′/θ′/δ′ composite precipitate, as another important strengthening phase in the latest generation of Al–Li alloys, exhibits excellent resistance to coarsening. Here, we propose two thickening models for an anomalous δ′/θ′/δ′ that is …

Transition metal carbonates are attracting significant interests as lithium-ion batteries (LIBs) anode due to their high specific capacity and initial Coulombic efficiency. However, the internal poor conductivity and volume variation hinder their …

As the development of dual-ion batteries (DIBs) is limited by the capacity of anions intercalation, we put forward an innovative design idea of DIB. Compared with the traditional graphite cathodes, few-layered reduced graphene oxide (rGO) has a …

The partitioning of nitrogen atoms and its effect on the retained austenite content (RAC) during quenching and partitioning (Q&P) process were investigated by dilatometry, X-ray diffraction, and field emission transmission electron microscopy with …

Because of their low density, inherent biocompatibility and sufficient mechanical properties, magnesium (Mg) and its alloys are exhibiting great potential in biomedical engineering [ 1 – 4 ]. For a healthy person, Mg is a basic trace element and …

Numerical simulations of a gas-particle jet through a Laval nozzle are performed using a modified point-particle Euler–Lagrange approach. By excluding the particle-occupied fluid fraction when solving the fluid phase equations and accounting for …

How is China viewed by citizens of other countries? Popular polling data based on the feeling thermometer scale can reveal overall patterns of public sentiment toward China, but they do not necessarily capture the multidimensional preferences of …

Mechanical properties of metallic materials, such as high-purity cobalt, are directly linked to crystallographic phase structures and microstructure defect presence. The mechanical behavior of two-phase cobalt remains unclear when the phase …

The United States’ (US) changing policy towards China has become one of the most attractive issues in contemporary international politics. To explore the reasons underlying these changes, existing studies adopt four schools of explanation, i.e. …

Two-dimensional (2D) molybdenum disulfide (MoS2) nanomaterials have emerged as promising candidates for constructing excellent supercapacitors, but the lack of large-scale, efficient and low-cost methods for preparing MoS2 nanosheets severely …

A protective/conductive coating can be used to limit the formation of chromia in ferritic steel interconnects in solid oxide fuel cells (SOFCs). One of the most promising candidates for restricting chromia formation is the addition of reactive …

The films of (Bi0.5Na0.5)(Ti1-xMnx)O3-δ (BNTMx) were deposited on the substrates via the sol–gel method. The influence of the doping content of Mn on the microstructures and ferroelectric properties of the films were investigated. In addition, the …

The aim of this work is to study and compare the morphology and rheology of cellulose nanofibrils (CNFs) from bleached softwood kraft pulp by several mechanical treatment methods. Three different kinds of CNFs were prepared in this work: (i) ones …

The financial sector has seen a transformation towards ‘sustainable’ finance particularly in Europe, driven also by unprecedented regulatory reforms. At the same time, many are sceptical about the real impact of these reforms, fearing that they …

Feature Selection (FS) methods alleviate key problems in classification procedures as they are used to improve classification accuracy, reduce data dimensionality, and remove irrelevant data. FS methods have received a great deal of attention from …

We develop a new fully coupled thermo-hydro-mechanical (THM) model to investigate the combined effects of thermal perturbation and in-situ stress on heat transfer in two-dimensional fractured rocks. We quantitatively analyze the influence of …

Rockfalls are a major hazard in mountain areas and along engineering slopes. It is important to fully understand the characteristics and processes of rockfall movements, both for hazard assessment and countermeasure design. This study focused on …

The work presents a general strategy to design high-order conservative co-located finite-difference approximations of viscous/diffusion terms for flows featuring extreme variations of diffusive properties. The proposed scheme becomes equivalent to …

Titanium alloy is widely used in aerospace and other industry fields because of its excellent physical and chemical properties. However, the fabrication process is still a challenge for the traditional machining processes due to the ultra hardness …

Ultrasonic shot peen forming (USPF) is a promising and widely used forming technique for thin metallic parts. In this paper, detailed deformation behavior of the aluminum alloy ring caused by USPF was studied, which is of a great significance to …

The ablation performance of carbon–carbon composites depends on the environment in which the ablation occurs. At temperatures below 3000 $$K$$ K , the ablation performance of carbon–carbon composites is determined by oxidation, and so it is not …

Management of plant nutrition using fertilizers is an approach to deal with drought and to increase water productivity in paddies. The aim of this study, therefore, was to investigate the effects of nitrogen and potassium fertilizers and drought …

Maraging 300 is an ultrahigh strength steel with significant alloy addition, resulting in a martensitic matrix hardened by precipitation through aging treatment. In these steels, intercritical tempering can provide reverted austenite and …

In this study, dopamine and graphene oxide (GO) solutions were spin-coated on the silicon wafers to obtain the GO/polydopamine (PDA) films. The carbon films were subsequently fabricated by annealing the GO/PDA films in argon atmosphere. The atomic …

It is suggested that specialized mutualisms are more vulnerable to climate change. Ant-gardens (AGs) are a complex and specialized mutualistic system represented by epiphytic plants that specifically inhabit the arboreal nest built by canopy ants …

In this paper, I argue that AI-powered voice assistants, just as all technologies, actively mediate our interpretative structures, including values. I show this by explaining the productive role of technologies in the way people make sense of …

Overtourism is an increasingly relevant problem for tourist destinations, and some cities are starting to take extreme measures to counter it. In this paper, we introduce a simple mathematical model that analyzes the dynamics of the populations of …

With increasing demand for hybrid electric vehicles (HEVs) and electric vehicles (EVs) demand in daily life, the lithium ion batteries (LIBs) are considered as the promising candidates to resolve urgent demands for clean, renewable energy[ 1 , 2 ]; …

The main objective of this paper is to evaluate the validity of the existing methods for analytically solving the governing equation of smoke filling in enclosures with floor leaks and growing fires. Since the complete form of the governing …

In engineering applications almost all processes are described with the help of models. Especially forming machines heavily rely on mathematical models for control and condition monitoring. Inaccuracies during the modeling, manufacturing and …

Sample activated carbon electrodes sourced from bamboo materials are synthesized using a combination of chemical and physical activation and applied in the production of supercapacitor cells. This study, therefore, focuses on the carbonization …

We investigate how paying a bribe or refusing a bribe differs between observing others doing this or committing such acts oneself. Study 1 examines how and when observing others paying a bribe or refusing a bribe leads to actions opposing bribery …

To further enhance the reinforcing effect of polyimide (PI) fibers on carbon nanotube polymer composites, in this work, networks of long chains of phosphate monoester (PMOEs) were grown on the surface of PI fibers, and silanized multiwalled carbon …

The trace of inverse coefficient matrix method in state space is used to implement and simplify an iterative design of a control system with main interest in increasing dynamical performance quality or to check if stability danger exists. The τ …

Timestamps are often found to be dirty in various scenarios, e.g., in distributed systems with clock synchronization problems or unreliable RFID readers. Without cleaning the imprecise timestamps, temporal-related applications such as provenance …

In this study, parts were fabricated using variations of laser power, scanning speed, and hatch spacing (volumetric energy density (VED)) to understand the effect of processing parameters on the structure and properties of 316L stainless steel. It …

In this study, utilizing the boundary collocation approach based on the generalized Westergaard formulation developed by Sanford, alternative splitting strips with various ratios of length/depth, L/h = 0.5, 0.75, 1.25, and 1.5, were first …

Multi-span composite lattice sandwich beams have wide application prospects in the aerospace, high-speed trains and civil engineering fields because of the low specific weight, high specific strength and multifunctional potential. Moreover, the …

The study on multiple unmanned aerial vehicles (UAVs) reconnaissance task allocation problem is an important research field, which is significant for both military and civilian applications. This problem has often been considered as a multiple …

Pulverized coal utilization in the blast furnace is decided by the particle flow and combustion behaviors in the raceway. Under a specific operating condition, these behaviors are directly related to the lance configuration in the upstream tuyere …

Information retrieval (IR) defines the process of searching and attaining specific information resources which are related to the specific information requirements from the available resource pool. It finds useful in several real time application …

Through improved similarity analysis algorithm and hybrid local sensitivity hashing method, information is summarized and retrieved by information retrieval method based on EPC network architecture. This method does not consider the symmetry of …

As part of efforts to promote sustainable mobility, many cities are currently experiencing the rapid expansion of their metro network. The consequent growth in ridership motivates a broad range of travel demand management (TDM) policies, both in …

News is a medium that notifies people about the events that had happened worldwide. The menace of fake news on online platforms is on the rise which may lead to unwanted events. The majority of fake news is spread through social media platforms …

Understanding how local and landscape-level factors influence species abundances and distributions is crucial for conservation and restoration efforts. Effects of urbanization are often negative at a landscape level, but some taxa such as solitary …

An experimental heat treatment chamber and control system were developed to perform in-situ X-ray diffraction experiments during low-pressure carburizing (LPC) processes. Results from the experimental chamber and industrial furnace were compared …

In this work, we present a multimodal approach to three-dimensionally quantify and visualize fiber orientation and resin-rich areas in carbon-fiber-reinforced polymers manufactured by vacuum infusion. Three complementary image modalities were …

A brief overview of the history of the origin and development of the cosmological distance scale based on redshift is given. Statistical aspects of the problem of calibration of scales of this type are considered on the analogy with the problems …

The growth mechanism of Cu6Sn5 intermetallic compound (IMC) at Sn/Cu interface reflowed under 250 °C, 275 °C, and 300 °C for a duration of 60 s and undergoing highly pressurized air action (HP), water cooling (WC), air cooling (AC) or furnace …

In this study, we address the impact of Ti underlayer thickness (UL: 0-40 nm) on the structural, magnetic, and microscopic properties of TbFe thin films. The structural analysis confirmed the intermixing at interfaces of the Ti and TbFe layer with …

The pure and Ni-doped CuO nanocrystals were prepared via auto-combustion method and characterized by X-ray diffraction, scanning electron microscope, UV spectroscopy, and vibrating sample magnetometer method. The X-ray diffraction patterns of all …

Surfactant and organic solvents-based SnO2 rods and SnO2/rGO, SnO2/MWCNTs composite materials were synthesized by microwave-assisted hydrothermal process. Powder X-ray diffraction analysis revealed the rutile phase formation. Surface morphology of …

Among the three heat conduction modes (diffusive, second sound, and ballistic propagation), the ballistic one is the most difficult to model. In the present paper, we discuss its physical interpretations and show different alternatives to its …

An approximated theoretical model for linear hyperelastic materials with orthotropic inclusions is presented based on a mixture approach and orientation averaging of mechanical properties. In many modern composites, particle inclusions are used to …

Identifying the exactly or approximately explicit expression of the stationary response probability density for general nonlinear stochastic dynamical systems is of great significance in the fields of stochastic dynamics and control. Almost all …

The self-similarity of characteristic stages of damage-failure transition has been studied both theoretically and experimentally, with the damage localization kinetics analyzed according to the nonlinearity of free energy release of solids with …

A Timoshenko beam model is applied for the analysis of the flexoelectric effect for a curved nano-beam. This theory transforms the beam to a 1-d problem along the beam axis. The electric intensity vector for the open-circuit condition can be …

We seek to understand the behavior of a pendulum under parametric excitation coupled with a nonlinear absorber. First, the reference system without any coupled absorber, i.e., a simple pendulum, is analyzed with a multiple scale method thanks to …

The classical Kapitsa’s problem of stability of an inverted pendulum subjected to vertical vibration of the support and some generalizations are investigated. The asymptotic method of two-scale expansions allows one to determine the level of …

In electrical discharge milling (ED-milling), the flow field of the working medium plays an important role in the removal of discharge eroded particles from the discharge gap. In this work, a flow field model between the electrode and workpiece …

Inconel 718 is one kind of nickel-based superalloy containing γ′ precipitates (Ni3Al). It has been widely used in aerospace field due to its high strength, high oxidation resistance, and corrosion resistance at high temperature. Considering the …

In this paper, rolled sheets of aluminum alloy 5052-H18 were joined by friction stir welding. Several samples were welded by varying the principal parameters including tool rotational speed, linear speed, tool shoulder diameter, and pin diameter.

To elevate the friction and wear performances of hot work mold, CrNi coatings with the different TiO2 mass fractions were fabricated on H13 steel using laser cladding (LC). The morphologies and phases of obtained coatings were analyzed using a …

This paper suggests a novel numerical model to accurately simulate the chip formation for a wide range of high cutting speeds. It consists of finite element (FE) modeling of orthogonal machining of titanium alloy (Ti-6Al-4V) in which the …

Currently, there are some defects in data aggregation encryption methods, such as low accuracy and efficiency. In this regard, this paper proposes an aggregation encryption method of social network privacy data based on matrix decomposition.

Accurate cellular traffic prediction becomes more and more critical for efficient network resource management in the Internet of Things (IoT). However, high-accuracy prediction results are usually accompanied by high computational capacity …

Human settlements represent important year-round habitats for many declining farmland birds; however, detailed knowledge of species-specific habitat associations is crucial for effective conservation of individual species. In this study, we …

The purpose of this article is to examine if Polish non-governmental organizations (NGOs) experience the precarious employment and to identify whether the commercialization of NGOs influences this phenomenon. The study confirms that Polish NGOs …

Through the solubility product theory of the ternary secondary phase, classical nucleation theory, and Ostwald ripening theory, a model was established to describe the thermodynamics and kinetics of (Ti, V)C precipitates in austenite/ferrite (γ/α) …

This research assesses the relevance of enhancing remittances on value added across economic sectors in sub-Saharan Africa for the period 1980–2014 using the Generalised Method of Moments. First, no significant net effects on added value to the …

The machining accuracy of computer numerical control machine tools has always been a focus of the manufacturing industry. Among all errors, thermal error affects the machining accuracy considerably. Because of the significant impact of Industry …

Coconut ( Cocos nucífera , L ) is cultivated in several countries and in all five continents. In 2017, the world coconut production comprised 12,303,924 harvested hectares and 60,773,436 tons of coconut (FAO 2019 ). In recent years, the production …

Degradation of various types of lignocellulosic biomass that require harsh pretreatment and abnormal operating conditions often occur in presence of a large amount of salt. Therefore, identification and use of stable and halotolerant cellulases is …

We present a novel optimization framework for optimal design of structures exhibiting memory characteristics by incorporating shape memory polymers (SMPs). SMPs are a class of memory materials capable of undergoing and recovering applied …

In this study, a new type of self-lubricating nanoparticle diamond grinding wheel with MoS2 and TiO2 nanoparticles as filling materials was proposed. According to the macro parameters (grinding force) and micro parameters (surface roughness …

The current work explored the first Rb2O-reinforced silicate glass (SG) system for determining potential use in radiation shielding applications. The glass system of (72 − x)SiO2–14.5Na2O–7.8CaO–4.2MgO–1.5Al2O3 − xRb2O where x: 0, 9, 18, 27, and …

The stability and geometrical, mechanical, and electronic properties of monolayer carbon sulfur (CS) systems with honeycomb-like structure are studied by using first-principles calculations based on density functional theory. The results …

The long-awaited definitive chronology for the period from the initial use of bronze metallurgy to the end of the Iron Age on the Khorat Plateau of Northeast Thailand has received near universal acceptance. In this review, we trace how bronze was …

This paper, relying on a still relatively unexplored long-term dataset on U.S. patenting activity, provides empirical evidence on the history of labor-saving innovations back to early nineteenth century. The identification of …

With the recent spread of the SARS-CoV-2 virus, computer-aided diagnosis (CAD) has received more attention. The most important CAD application is to detect and classify pneumonia diseases using X-ray images, especially, in a critical period as …

The performance of orthogonal frequency multiplexing (OFDM) communication systems is affected by the peak to average power ratio (PAPR). The research work uses a hybrid transform for reducing this PAPR value. In recent years, OFDM is more …

This paper documents the cycles in corporate investments around national elections in Pakistan from 2000 to 2016. It employed the investment-Q model as the baseline specification with firm fixed effects. Results revealed that during election …

Understanding how national policy can spur entrepreneurial activity is central to entrepreneurship research. Over the past decade, there has been a limited set of research findings to suggest that social spending may increase entrepreneurship in …

Polar nanoregions and grain refinement engineering are alternative methods to develop comprehensive energy storage performance ceramic materials. In our work, Ba0.8Sr0.2Zr0.1Ti0.9O3 (BSZT) and Na0.5Bi0.5TiO3 (NBT) powders with average particle …

xCo–5%Ni (where x = 0, 1, 3, and 5%) coatings on bentonite were synthesized by insipient wet impregnation method. The phase structures of the coatings, surface analysis, dielectric property of the samples as a function of frequency (at room …

In coring operations, core jamming is a permanent concern, taking place when the rock core sample becomes stuck within the inner core barrel, thus preventing further acquisition. This is undesirable in hard formations, for it stops the penetration …

Most recently, the whole world is struggling against the virulent pandemic COVID-19. Due to the unbounded global spread of the disease, having biosensors with high performance such as high sensitivity and accuracy is of utmost importance. In this …

Liquid-phase treatment of waste Poly Vinyl Chloride (PVC) was performed. Chlorine change rate was high when using alcohol, cresol and terpene compared with that observed in the treatment without solvent, so the importance of solvent for …