Engineering

Effect of Thermal Shock on Grindability of Oleic Adsorbed Flotation Placer Sillimanite
Thermal shock is one of the most effective techniques in size reduction. The present investigation deals with the effect of thermal shock treatment on grindability and grinding characteristics of sillimanite minerals and also an attempt has been made on the overall energy saving for preparation of sillimanite flour by using ball mill. This attempt is made due to a fine dry grinding of sillimani...


A Literature Review on Image Encryption Techniques
Image encryption plays a paramount part to guarantee classified transmission and capacity of image over web. Then again, a real-time image encryption confronts a more noteworthy test because of vast measure of information included. This paper exhibits an audit on image encryption in spatial, frequency and hybrid domains with both full encryption and selective encryption strategy. Classification...
The Economic Impact of Privacy Violations and Security Breaches
Privacy and security incidents represent a serious threat for a company’s business success. While previous research in this area mainly investigated second-order effects (e.g., capital market reactions to privacy or security incidents), this study focuses on first-order effects, that is, the direct consumer reaction. In a laboratory experiment, the authors distinguish between the impact of pr...


Parameter identification for a nonlinear enzyme-catalytic dynamic system with time-delays
In this paper, we consider a nonlinear enzyme-catalytic dynamical system with uncertain system parameters and state-delays for describing the process of batch culture. Some important properties of the time-delay system are discussed. Taking account of the difficulty in accurately measuring the concentrations of intracellular substances and the absence of equilibrium points for the time-delay sy...
Maximizing the net present value of a Steiner tree
The theory of Steiner trees has been extensively applied in physical network design problems to locate a Steiner point that minimizes the total length of a tree. However, maximizing the total generated cash flows of a tree has not been investigated. Such a tree has costs associated with its edges and values associated with nodes. In order to reach the nodes in the tree, the edges need to be con...


Cone ratio models with shared resources and nontransparent allocation parameters in network DEA
Many studies have examined the performance of production systems with shared resources through the application of data envelopment analysis (DEA). The present models are based on the multiplier-type frameworks and resource allocation variables (RAVs) in simple yet edifying network settings, such as multi-component and two-stage structures. Two issues associated with RAVs, however, are relevant ...
Mechanical analysis of functionally graded carbon nanotube reinforced composites: A review
Research activities related to functionally graded materials (FGMs) have increased rapidly in recent years. The superlative properties of carbon nanotubes, i.e. high strength, high stiffness, high aspect ratio and low density have made them an excellent reinforcement for composite materials. Inspired by the concept of FGMs, the functionally graded (FG) pattern of reinforcement has been applied ...

Localization of buckling modes in plates and laminates
We use the Mindlin plate theory and the finite element method to delineate the effect of fixing points on a transverse normal to the mid-surface of the plate on the localization of buckling modes in clamped–clamped rectangular plates made of linear elastic, homogeneous and either isotropic (monolithic) or orthotropic (fiber-reinforced composite) materials. The in-plane loads considered on the...
Estimation of fixed effects panel regression models with separable and nonseparable space–time filters
This paper considers a quasi-maximum likelihood estimation for a linear panel data model with time and individual fixed effects, where the disturbances have dynamic and spatial correlations which might be spatially stable or unstable. We first consider both separable and nonseparable space–time filters for the stable model. The separable space–time filter is subject to a parametric restrict...

Experimental Evaluation and Optimization of Flank Wear During Turning of AISI 4340 Steel with Coated Carbide Inserts Using Different Cutting Fluids
The understanding of cutting fluids performance in turning process is very important in order to improve the efficiency of the process. This efficiency can be determined based on certain process parameters such as flank wear, cutting forces developed, temperature developed at the tool chip interface, surface roughness on the work piece, etc. In this study, the objective is to determine the infl...
First and second thermodynamic law analyses applied to spark ignition engines modelling and emissions prediction
A mathematical and numerical model of flow and combustion process for spark ignition engines is developed using the principles of the first and second law of thermodynamic. Availability (exergy) analysis is applied to cylinder of a spark ignition engine during the combustion process using a two-zone combustion model. Special attention is given to identification and quantification of irreversibi...

Geodesic-based manifold learning for parameterization of triangular meshes
Reverse Engineering (RE) requires representing with free forms (NURBS, Spline, Bézier) a real surface (S_0) which has been point-sampled. To serve this purpose, we have implemented an algorithm that minimizes the accumulated distance between the free form and the (noisy) point sample. We use a dual-distance calculation point to / from surfaces, which discourages the forming of outliers and art...
TRIZ theory and case based reasoning: synergies and oppositions
A few years after TRIZ appearance in highly industrialized countries, many experts in Case Based Reasoning pointed out potential similarities between both approaches. Later on, research activities have been conducted and publications appeared on this subject. This paper presents the results of an in depth study of the roots of both approaches, from the point of view of their philosophy and the ...
Ensuring correct product characteristics during the design process
For many companies, the design process and product design are treated as two separate domains. However, the design process needs to be controlled in such a way that desired product characteristics are attained. This paper proposes a decision support system (DSS) where management techniques develop linkages between process and product, and where the system identifies possible conflicts between p...
In Vivo Photoacoustic and Fluorescence Cystography Using Clinically Relevant Dual Modal Indocyanine Green
Conventional X-ray-based cystography uses radio-opaque materials, but this method uses harmful ionizing radiation and is not sensitive. In this study, we demonstrate nonionizing and noninvasive photoacoustic (PA) and fluorescence (FL) cystography using clinically relevant indocyanine green (ICG) in vivo. After transurethral injection of ICG into rats through a catheter, their bladders were phot...