Informatics

Robust design and optimization of composite stiffened panels in post-buckling
Multilevel optimization including progressive failure analysis and robust design optimization for composite stiffened panels, in which the ultimate load that a post-buckled panel can bear is maximized for a chosen weight, is presented for the first time. This method is a novel robust multiobjective approach for structural sizing of composite stiffened panels at different design stages. The appr...


Improving J9 virtual machine with LTTng for efficient and effective tracing
The ability to observe the internal operation of the J9 virtual machine is essential for effective performance tuning. To this end, tracing is an important method, which is the action of recording events from a running system with minimum performance overhead for online or off-line analysis. In this paper, we propose the integration of Lng, an effective open-source tracing toolset, with J9 to i...
Chameleon – a group communication framework for smartphones
This paper reports about our experience in designing and developing Chameleon, a highly portable and adaptable group communication framework for smartphones. Chameleon owes its level of portability to several design choices, including the following: (i) a layered architecture, where the headers of each layer have a standard XML-based format, enabling automatic, error-resistant generation of eff...


Neural approach to inverting complex system: Application to ocean salinity profile estimation from surface parameters
A neural network model is proposed for reconstructing ocean salinity profiles from sea surface parameters only. The method is applied to the tropical atlantic. Prior data mining on a complete dataset shows that latitude and sea surface salinity are the most relevant surface parameters in the prediction of salinity profiles. a classification using a self-organizing map learned on a large multiva...
A hierarchical network-based algorithm for multi-scale watershed delineation
Watershed delineation is a process for defining a land area that contributes surface water flow to a single outlet point. It is a commonly used in water resources analysis to define the domain in which hydrologic process calculations are applied. There has been a growing effort over the past decade to improve surface elevation measurements in the U. S., which has had a significant impact on the...


Modeling and analysis for clearance machining process of end mills
Clearance of end mills has great impact on the performance of milling, and therefore a high demand for its machining theory and process is put forward. Based on the analysis of practical machining process, enveloping theory, principles of spatial geometry are introduced to establish the clearances processing model, as well as considering the geometries, orientations, and locations of wheels use...
On the effect of gating system type on occurrence of hot tears in Al–4 wt% Cu castings
In this study, effects of gating system type on hot tearing occurrence of Al–4 wt% Cu castings were investigated using the instrumented constrained T-shaped casting method. Three different gating systems, i.e. a conventional pressurized gating system, a conventional unpressurized gating system and a naturally pressurized gating system with surge control arrangement, were used for this purpos...

MapReduce based parallel gene selection method
Microarray data analysis has been widely used for extracting relevant biological information from thousands of genes simultaneously expressed in a specific cell. Although many genes are expressed in a sample tissue, most of these are irrelevant or insignificant for clinical diagnosis or disease classification because of missing values and noises. Thus, finding a small, closely related gene set ...
Life Is Too Short to RTFM: How Users Relate to Documentation and Excess Features in Consumer Products
This paper addresses two common problems that users of various products and interfaces encounter-over-featured interfaces and product documentation. Over-featured interfaces are seen as a problem as they can confuse and over-complicate everyday interactions. Researchers also often claim that users do not read product documentation, although they are often exhorted to ‘RTFM’ (read th...

At Home with Users: A Comparative View of Living Labs
Living Labs provide a ‘human-centric’ research approach for the design of new ICT artefacts. In Living Labs users participate over several design stages, providing insights into unexpected ICT use, co-creation and evaluation of new IT solutions. Although this approach is becoming more popular, there is little comparative and reflective work on its practical dynamics, problems and po...
Global exponential almost periodicity of a delayed memristor-based neural networks
In this paper, the existence, uniqueness and stability of almost periodic solution for a class of delayed memristor-based neural networks is studied. By using a new Lyapunov function method, the neural network has a unique almost periodic solution, which is globally exponentially stable is proved. Moreover, the obtained conclusion on the almost periodic solution is applied to prove the existenc...

Simple randomized algorithms for online learning with kernels
In online learning with kernels, it is vital to control the size (budget) of the support set because of the curse of kernelization. In this paper, we propose two simple and effective stochastic strategies for controlling the budget. Both algorithms have an expected regret that is sublinear in the horizon. Experimental results on a number of benchmark data sets demonstrate encouraging performanc...
Cultural Collapse and System Survival Due to Environmental Modification
We consider a simple mathematical approach to the rise and fall of societies based on population growth and its effects on the environment, both beneficial and detrimental. We find that in any simple model of population dynamics with environmental coupling, stable cultures are impossible. Populations inevitably grow or decline exponentially. Further, if the parameters defining a civilisation ar...
Orthogonal-state-based deterministic secure quantum communication without actual transmission of the message qubits
Recently, an orthogonal-state-based protocol of direct quantum communication without actual transmission of particles is proposed by Salih et al. (Phys Rev Lett 110:170502, 2013) using chained quantum Zeno effect. The counterfactual condition (claim) of Salih et al. is weakened here to the extent that transmission of particles is allowed, but transmission of the message qubits (the qubits on wh...
Two efficient schemes for probabilistic remote state preparation and the combination of both schemes
We propose two novel schemes for probabilistic remote preparation of an arbitrary quantum state with the aid of the introduction of auxiliary particles and appropriate local unitary operations. The first new proposal could be used to improve the total successful probability of the remote preparation of a general quantum state, and the successful probability is twice as much as the one of the pr...