Search all articles
190152 articles
Research Article
Analysis of Asymmetric Mutation Model in Random Local Search
Hiroshi Furutani, Makoto Sakamoto, Yifei Du, Kenji Aoki
Pages: 1 - 4
In a standard Evolutionary Algorithms (EAs), one uses the same rate for mutations from bit 1 to bit 0 and its reverse direction. There are many reports that the asymmetric mutation model is a very powerful strategy in EAs to obtain better solutions more efficiently. In this paper, we report stochastic...
Research Article
Safely Entering the Deep: A Review of Verification and Validation for Machine Learning and a Challenge Elicitation in the Automotive Industry
Markus Borg, Cristofer Englund, Krzysztof Wnuk, Boris Duran, Christoffer Levandowski, Shenjian Gao, Yanwen Tan, Henrik Kaijser, Henrik Lönn, Jonas Törnqvist
Pages: 1 - 19
Deep neural networks (DNNs) will emerge as a cornerstone in automotive software engineering. However, developing systems with DNNs introduces novel challenges for safety assessments. This paper reviews the state-of-the-art in verification and validation of safety-critical systems that rely on machine...
Research Article
The impact of social media followers on corporate value: An investigation of Australian firms
Patrick Mauder
Pages: 1 - 12
With social media user numbers reaching billions, firms seek to partake in the benefits of investing into social media activities. Existing literature, however, provides little insight as to whether investment in social media adds value for corporations. In particular, it remains difficult to quantify...
Research Article
On Marshall-Olkin Extended Weibull Distribution
Hanan Haj Ahmad, Omar M. Bdair, M. Ahsanullah
Pages: 1 - 17
In this paper, we introduce a new form of distributions called ”Marshall-Olkin Extended Weibull distribution” MOEW. We study some of its structural properties and the shape of its hazard rate function. We provide some methods of point estimation for the unknown parameters and discuss its asymptotic properties....
Research Article
On a graded q-differential algebra
Viktor Abramov
Pages: 1 - 8
Given an associative unital ZN -graded algebra over the complex numbers we construct the graded q-differential algebra by means of a graded q-commutator, where q is a primitive N-th root of unity. The N-differential d of the graded q-differential algebra is a homogeneous endomorphism of degree 1 satisfying...
Research Article
A Note on Surface Profiles for Symmetric Gravity Waves with Vorticity
Mats Ehrnström
Pages: 1 - 8
We consider a nontrivial symmetric periodic gravity wave on a current with nondcreasing vorticity. It is shown that if the surface profile is monotone between trough and crest, it is in fact strictly monotone. The result is valid for both finite and infinite depth.
Research Article
Asymptotic behavior of discrete holomorphic maps zc and log(z)
Sergey I. Agafonov
Pages: 1 - 14
It is shown that discrete analogs of zc and log(z), defined via particular "integrable" circle patterns, have the same asymptotic behavior as their smooth counterparts. These discrete maps are described in terms of special solutions of discrete Painlevé-II equations, asymptotics of these solutions providing...
Research Article
A Chorin-Type Formula for Solutions to a Closure Model for the von K´arm´anHowarth Equation 1
V.N. Grebenev, M. Oberlack
Pages: 1 - 9
The article is devoted to studying the Millionshtchikov closure model (a particular case of a model introduced by Oberlack [14]) for isotropic turbulence dynamics which appears in the context of the theory of the von K´arm´an-Howarth equation. We write the model in an abstract form that enables us to...
Research Article
On a "Quasi" Integrable Discrete Eckhaus Equation
M.J. Ablowitz, C.D. Ahrens
Pages: 1 - 12
In this paper, a discrete version of the Eckhaus equation is introduced. The discretiztion is obtained by considering a discrete analog of the transformation taking the cotinuous Eckhaus equation to the continuous linear, free Schrödinger equation. The resulting discrete Eckhaus equation is a nonlinear...
Review Article
So. . . what was the question?
Gérard G. Emch
Pages: 1 - 8
An overview of the lectures at the 2002 Bialowiea Workshop is presented. The symbol* after a proper name indicates that a copy of the corresponding contribution to the proceedings was communicated to the author of this summary.
Research Article
On the Quantization of Yet Another Two Nonlinear Harmonic Oscillators
Francesco Calogero
Pages: 1 - 6
In two previous papers the quantization was discussed of three one-degree-of-freedom Hamiltonians featuring a constant c, the value of which does not influence at all the corresponding classical dynamics (which is characterized by isochronous solutions, all of them periodic with period 2: "nonlinear...
Research Article
Comparisons Between Vector and Matrix Padé Approximants
Claude Brezinski
Pages: 1 - 12
In this paper, we compare the degrees and the orders of approximation of vector and matrix Padé approximants for series with matrix coefficients. It is shown that, in this respect, vector Padé approximants have better properties. Then, matrixvector Padé approximants are defined and constructed. Finally,...
Research Article
NavierStokes Equations with Nonhomogeneous Dirichlet Data
Herbert Amann
Pages: 1 - 11
We discuss the solvability of the time-dependent incompressible NavierStokes equtions with nonhomogeneous Dirichlet data in spaces of low regularity.
Research Article
Noncentral Extensions as Anomalies in Classical Dynamical Systems
Jorge E. Solomin, Marcela Zuccalli
Pages: 1 - 9
A two cocycle is associated to any action of a Lie group on a symplectic manifold. This allows to enlarge the concept of anomaly in classical dynamical systems considered by F Toppan in [J. Nonlinear Math. Phys. 8, Nr. 3 (2001), 518533] so as to encompass some extensions of Lie algebras related to noncanonical...
Research Article
Hidden Symmetries, First Integralsvand Reduction of Order of Nonlinear Ordinary Differential Equations
Barbara Abraham-Shrauner
Pages: 1 - 9
The reduction of nonlinear ordinary differential equations by a combination of first integrals and Lie group symmetries is investigated. The retention, loss or even gain in symmetries in the integration of a nonlinear ordinary differential equation to a first integral are studied for several examples....
Research Article
From Bi-Hamiltonian Geometry to Separation of Variables: Stationary Harry-Dym and the KdV Dressing Chain
Maciej Blaszak
Pages: 1 - 13
Separability theory of one-Casimir Poisson pencils, written down in arbitrary coordnates, is presented. Separation of variables for stationary Harry-Dym and the KdV dressing chain illustrates the theory.
Research Article
Kovalevski Exponents and Integrability Properties in Class A Homogeneous Cosmological Models
Marek Szydłowski, Marek Biesiada
Pages: 1 - 10
Qualitative approach to homogeneous anisotropic Bianchi class A models in terms of dynamical systems reveals a hierarchy of invariant manifolds. By calculating the Kovalevski Exponents according to Adler - van Moerbecke method we discuss how algebraic integrability property is distributed in this class...
Research Article
Complex Angle Variables for Constrained Integrable Hamiltonian Systems
S. Abenda, Yu Fedorov
Pages: 1 - 4
We propose Dirac formalism for constraint Hamiltonian systems as an useful tool for the algebro-geometrical and dynamical characterizations of a class of integrable systems, the so called hyperelliptically separable systems. As a model example, we apply it to the classical geodesic flow on an ellipsoid.
Research Article
UV Manifold and Integrable Systems in Spaces of Arbitrary Dimension
A.N. Leznov
Pages: 1 - 7
The 2n dimensional manifold with two mutually commutative operators of differetiation is introduced. Nontrivial multidimensional integrable systems connected with arbitrary graded (semisimple) algebras are constructed. The general solution of them is presented in explicit form.
Research Article
Lax Pairs, Painlevé Properties and Exact Solutions of the Calogero Korteweg-de Vries Equation and a New (2 + 1)-Dimensional Equation
Song-Ju Yu, Kouichi Toda
Pages: 1 - 13
We prove the existence of a Lax pair for the Calogero Korteweg-de Vries (CKdV) equation. Moreover, we modify the T operator in the the Lax pair of the CKdV equation, in the search of a (2 + 1)-dimensional case and thereby propose a new equation in (2+1) dimensions. We named this the (2+1)-dimensional...
Research Article
Solutions of WDVV Equations in Seiberg-Witten Theory from Root Systems
R. Martini, P.K.H. Gragert
Pages: 1 - 4
We present a complete proof that solutions of the WDVV equations in Seiberg-Witten theory may be constructed from root systems. A generalization to weight systems is proposed.
Research Article
On the Moyal Quantized BKP Type Hierarchies
Dolan Chapa Sen, A. Roy Chowdhury
Pages: 1 - 7
Quantization of BKP type equations are done through the Moyal bracket and the formalism of pseudo-differential operators. It is shown that a variant of the dressing operator can also be constructed for such quantized systems.
Research Article
Integrability of the Perturbed KdV Equation for Convecting Fluids: Symmetry Analysis and Solutions
J.M. Cerveró, O. Zurrón
Pages: 1 - 23
As an example of how to deal with nonintegrable systems, the nonlinear partial differential equation which describes the evolution of long surface waves in a convecting fluid ut + (uxxx + 6uux) + 5uux + (uxxx + 6uux)x = 0, is fully analyzed, including symmetries (nonclassical and contact transformatons),...
Research Article
Particle trajectories in linear periodic capillary and capillary-gravity deep-water waves
David Henry
Pages: 1 - 7
We show that within the framework of linear theory the particle paths in a periodic gravity-capillary or pure capillary deep-water wave are not closed.
Research Article
Some Measures Relating Partitions Useful for Computational Intelligence
Ronald R. Yager
Pages: 1 - 18
SOME MEASURES RELATING PARTITIONS USEFUL FOR COMPUTATIONAL INTELLIGENCE We investigate a number of measures relating partitions. One class of measures we consider are congru- ence measures. These measures are used to calculate the similarity between two partitionings. We provide a number of examples...
Research Article
Harmonic maps between quaternionic Kahler manifolds
S. Ianuş, R. Mazzocco, G.E. Vilcu
Pages: 1 - 8
Research Article
Algebraic Discretization of the Camassa-Holm and Hunter-Saxton Equations
Rossen I. Ivanov
Pages: 1 - 12
The Camassa-Holm (CH) and Hunter-Saxton (HS) equations have an interpretation as geodesic flow equations on the group of diffeomorphisms, preserving the H 1 and H 1 right-invariant metrics correspondingly. There is an analogy to the Euler equations in hydrodynamics, which describe geodesic flow for a...
Research Article
Nonlocal Extensions of Similarity Methods
George Bluman
Pages: 1 - 24
Similarity methods include the calculation and use of symmetries and conservation laws for a given partial differential equation (PDE). There exists a variety of software to calculate and use local symmetries and local conservation laws. However, it is often the case that a given PDE admits no useful...
Research Article
Quantum Integrability of the Dynamics on a Group Manifold
V. Aldaya, M. Calixto, J. Guerrero, F.F. Lopez-Ruiz
Pages: 1 - 12
We study the dynamics of a particle moving on the SU(2) group manifold. An exact quantization of this system is accomplished by finding the unitary and irreducible representations of a finite-dimensional Lie subalgebra of the whole Poisson algebra in phase space. In fact, the basic position and momentum...
Research Article
Novel Robust Stability Criteria for Uncertain Stochastic Neural Networks with Time-Varying Delay
Yonggang Chen, Yunrui Guo, Wenlin Li
Pages: 1 - 9
This paper considers the robust stability analysis problem for a class of uncertain stochastic neural net- works with time-varying delay. Based on the Lyapunov functional method, and by resorting to the new technique for estimating the upper bound of the stochastic derivative of Lyapunov functionals,...
Research Article
Implications of Fuzziness for the Practical Management of High-Stakes Risks
Mark Jablonowski
Pages: 1 - 7
High-stakes (dangerous, catastrophic) risks take on a wider profile as progress unfolds. What are the impacts of technological and social change on the risk landscape? Due to the complexities and dynamics involved, we can only answer these questions approximately. By using the concept of fuzziness, we...
Research Article
A New Clonal Selection Immune Algorithm with Perturbation Guiding Search and Nonuniform Hypermutation
Zaijin Zou, Xinchao Zhao, Shuliang Zhao, Guoshuai Zhao, Shaozhang Niu, Guoli Liu
Pages: 1 - 17
A new clonal selection immune algorithm with perturbation guiding search and non-uniform hypermutation (nCSIA) is proposed based on the idea of perturbed particle swarm algorithm and non-uniform mutation. The proposed algorithm proportional clones antibody based on the affinity, adaptively adjusts the...
Research Article
Risk Decision Making Based on Decision-theoretic Rough Set: A Three-way View Decision Model
Huaxiong Li, Xianzhong Zhou
Pages: 1 - 11
Rough set theory has witnessed great success in data mining and knowledge discovery, which provides a good support for decision making on a certain data. However, a practical decision problem always shows diversity under the same circumstance according to different personality of the decision makers....
Research Article
Biogas - A European Perspective on Safety and Regulation
Olivier Salvi, Samuel Delsinne, Sébastien Evanno
Pages: 1 - 20
The production of biogas is positioned as energy which can not only generate a source of energy known as "green" but also which can recycle waste. In the context of sustainable development, the place of biogas is therefore essential. The risks corresponding to the production processes and uses of are...
Research Article
Testing the Veracity of Supply Chain Management Technology in a Developing Country - Context: A Case Study of Agriculture in Bacolod, The Philippines
Dennis Howard
Pages: 1 - 11
This paper describes in the broad terms, the field of supply chain management and then, in particular, its application to agriculture. Modern supply chain management technologies have a lot to offer in the development of agriculture in developing countries.
Review Article
A Review of Emerging Technology Trends in E-Commerce
Qingxiong Ma
Pages: 1 - 15
After several years of growth, E-commerce has become mainstream and matured. However, the new challenges require that tomorrow’s E-commerce system move beyond the basic functions such as a static website with electronic catalogue and/or a shopping cart towards an intelligent, dynamic, and secure commerce...
Research Article
Forecasting Bangladeshi monsoon rainfall using neural network and genetic algorithm approaches
Shipra Banik, Mohammed Anwer, A.F.M. Khodadad Khan, Rifat Ara Rouf, Farah Habib Chanchary
Pages: 1 - 18
True information about rainfall is crucial for human activities such as the use and the management of water resources, hydroelectric power projects, warning to impend droughts or floods, urban areas sewer systems and many others. This paper investigates the development of an efficient model to forecast...
Research Article
Technology Orientation, Innovation and Business Performance: A Study of Dubai SMEs
Yahya Al-Ansari, Marwan Altalib, Muna Sardoh
Pages: 1 - 11
This study examines how technology orientation interacts with innovation to affect business performance in small and medium-sized enterprises (SMEs) in an emerging market, namely Dubai in the United Arab Emirates. Survey data from 200 Dubai SMEs demonstrated, firstly, that technology orientation influenced...
Review Article
Preservation of Classes of Discrete Distributions Under Reliability Operations
I. Elbatal, M. Ahsanullah
Pages: 1 - 10
In this paper we consider some widely utilized classes of discrete distributions and aim to provide a systematic overview about their preservation under convolution. This paper will serve as a detailed reference for the study and applications of the preservation of the discrete NBU(2), NBUCA classes...
Proceedings Article
Governance, Audit Committee and Strategic Management Accounting in Listed Companies in Vietnam
Huynh LOI, Le Doan Minh DUC, Nguyen Thanh HUNG
Research purpose:
Our research purpose is to explore the relationship of three important components: Corporate Governance, Audit Committee, Strategic Management Accounting.
Research motivation:
Corporate governance includes a system of institutions, policies, and laws in order to effectively organize,...
Series: Advances in Engineering Research
Proceedings Article
Designing and Fabrication of Integrated Soybean Machine (3 in 1 Process) to Optimize Tempe Producers Productivity
Yunus, Made Arsana, Novi Sukma Drastiawati, Erlinda Ningsih
This study aims to optimize the productivity of Tempe producers. Optimization is carried out through engineering research of the soybean machine 3 IN 1 process production capacity of 250 kg/hour to solve the problem of low productivity of stripping, solving, and separating the soybean husk. To guarantee...
Proceedings Article
Interviewing for Solutions: Enlightenment of Solution-Focused Approach to the Work of College Counselors
Hui Zhang
The solution-focused approach is a practical psychological counseling approach that focuses on the visitors and helps the visitors to construct an interviewing for solutions. The solution-focused approach is an approach of empowering the visitors, which helps the visitors to cope with the current problems...
Proceedings Article
Ability Training Methods of Postgraduates with Interest-oriented, Omni-directional and Diversified Resource Utilization and Plant Protection Professional Degree
Kaifa Guo, Chenzhong Jin, Yunyun Zhou, Xiu Liu
With the rapid development of agriculture in the new era and the improvement of higher education level, there are higher requirements for the ability of postgraduates in the field of resource utilization and plant protection. This article mainly researches the ways to cultivate the ability of professional...
Proceedings Article
Current Status of Remoting Sensing Application
Xiao Chen
Remote sensing is a technique for identifying the Earth’s environment and resources by gathering electromagnetic radiation data from man-made satellites, planes, and other aircraft. This makes up for the shortcomings of manual monitoring which is limited by ground conditions and small monitoring range....