A new operational matrix based on Bernoulli polynomials

In this research, the Bernoulli polynomials are introduced. The properties of these polynomials are employed to construct the operational matrices of integration together with the derivative and product. These properties are then utilized to transform the differential equation to a matrix equation which corresponds to a system of algebraic equations with unknown Bernoulli coefficients. This method can be used for many problems such as differential equations, integral equations and so on. Numerical examples show the method is computationally simple and also illustrate the efficiency and accuracy of the method

Proportional-integral-plus control applications of state-dependent parameter models

This paper considers proportional-integral-plus (PIP) control of non-linear systems defined by state-dependent parameter models, with particular emphasis on three practical demonstrators: a microclimate test chamber, a 1/5th-scale laboratory representation of an intelligent excavator, and a full-scale (commercial) vibrolance system used for ground improvement on a construction site. In each case, the system is represented using a quasi-linear state-dependent parameter (SDP) model structure, in which the parameters are functionally dependent on other variables in the system. The approach yields novel SDP-PIP control algorithms with improved performance and robustness in comparison with conventional linear PIP control. In particular, the new approach better handles the large disturbances and other non-linearities typical in the application areas considered

Resistance To Change Among First Line Managers In Multinational Organizations In Malaysia

Dramatic changes in organization structure and culture have become an essence that more and more individuals and organizations are recognizing the importance of the way that they can overcome the resistance to change

The effect of culture and organisational culture on administrative corruption

Copyright © 2019 Inderscience Enterprises Ltd. There is extensive literature on corruption, such as political and corporate corruption, some of which examines factors influencing administrative corruption. However, to the best of our knowledge, the multivariate influences of culture and organisational culture on administrative corruption have not been tested using an integrative approach. This paper attempts to fill the gap by building and testing a comprehensive model. We test a sample of 677 responses that reflect the prospective view of the public in Basra, Iraq, using the partial least squares structural equation modelling (PLS-SEM) approach. Our study finds that corrupt culture and weak organisational culture have direct effects on administrative corruption, while corrupt culture leads to weak organisational culture. The latter mediates the impact of corrupt culture on administrative corruption. The higher level of social class, the lower the impact of corrupt culture on administrative corruption

The Effect of Political Instability and Institutional Weakness on Administrative Corruption

Although there is valuable literature on areas of corruption, such as political and corporate corruption, a limited number of papers have examined the determinants of administrative corruption. To the best of our knowledge, the multivariate impacts of political instability and institutional weakness on administrative corruption, and the interplay between these constructs, have not been examined using the partial least squares structural equation modeling method. The current study attempts to fill this gap by proposing and testing a model. We test a sample of 677 responses that reflect the perspective of the general public in Basra, Iraq. Findings reveal that the political instability and institutional weakness of public organizations positively impact administrative corruption, while political instability leads to institutional weakness. Institutional weakness mediates the effect of political instability on administrative corruption. Therefore, political instability is a crucial factor causing corruption since it has both direct and indirect effects on administrative corruption. The theoretical contributions, managerial implications, limitations, and recommendations for further research are provided

Inhibition of copper corrosion in saline solution by mono-hydroxamic acid

The main objective of the present work involved the study of the inhibitive properties of organic product as environmentally friendly as copper corrosion inhibitor, in 3% NaCl solution. The effectiveness of Mono-hydroxamic acid (C12N) used as a corrosion inhibitor for copper in 3% NaCl was investigated by weight loss and electrochemical techniques. Surfaces were characterized by scanning electron microscopy (SEM). The results showed that the chemical investigated provided efficient inhibition of copper corrosion. The inhibition efficiency improved with increasing the inhibitor concentration. C12N acts mainly as a cathodic-type inhibitor

On α\alpha-adjacency energy of graphs and Zagreb index

Let $A(G)$ be the adjacency matrix and $D(G)$ be the diagonal matrix of the vertex degrees of a simple connected graph $G$. Nikiforov defined the matrix $A_{\alpha}(G)$ of the convex combinations of $D(G)$ and $A(G)$ as $A_{\alpha}(G)=\alpha D(G)+(1-\alpha)A(G)$, for $0\leq \alpha\leq 1$. If $\rho_{1}\geq \rho_{2}\geq \dots \geq \rho_{n}$ are the eigenvalues of $A_{\alpha}(G)$ (which we call $\alpha$-adjacency eigenvalues of $G$), the $\alpha$-adjacency energy of $G$ is defined as $E^{A_{\alpha}}(G)=\sum_{i=1}^{n}\left|\rho_i-\frac{2\alpha m}{n}\right|$, where $n$ is the order and $m$ is the size of $G$. We obtain the upper and lower bounds for $E^{A_{\alpha}}(G)$ in terms of order $n$, size $m$ and Zagreb index $Zg(G)$ associated to the structure of $G$. Further, we characterize the extremal graphs attaining these bounds.Comment: 17 page

Using semantic web technologies for matchmaking software agents representing web service description

The recent growth of using agents in representing web services is causing difficulties in finding specific types of services. This problem usually arises because matchmaking techniques for services are often based on string comparison and service providers might neglect to provide enough or appropriate keywords for the matchmaking process. In this thesis, we report on an approach that makes use of formal ontologies and automated reasoning services in order to improve the matchmaking process. The suggested approach is based on the Ontology Web Language (OWL), the OWL reasoner RACER, and the agent framework DECAF. The use of OWL ontologies is twofold. First, ontologies were used in order to express the particular knowledge of agents. These ontologies are grounded by referring to a so-called common upper ontology providing the necessary glue between the different agent domains. Second, with the help of OWL-S, a standard OWL ontology designed for specifying service descriptions, agents describe formally their offered web services. Our approach depends on a middle-ware agent called matchmaker, which will be in charge of matching required services to proper provider agents. Due to the use of OWL ontologies, the matchmaking process can be reduced to query processing and ontology reasoning implemented by the RACER system. The suggested approach has been demonstrated using a bioinformatics scenario, where several agents will take care of representing several web services. These agents will be providing composite services that the biology scientists might need. The communication protocol is based on OWL-S and allows seeker agents to adapt smoothly to dynamically changed web service descriptions of provider agents