Applications of the combinatorial configurations as mathematical models for innovative design of logistic control processes, is known, provide improving the quality indices of the processes with respect to functional ...
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the increasing demand for on-time delivery and low cost is forcing semiconductor manufacturers to seek more efficient schedules to allocate machines and other resources to minimize the cost associated with other featu...
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One of the fundamental problems in the field of robotic motion planning is to safely and efficiently drive the end effector of a robotic manipulator to a specified goal position. Here, safety refers to the requirement...
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In this paper analytical solution of fastest mixing Markov chain problem over a sensor network with K-partite topology is provided. the solution procedure consists of Stratification of sensor network's connectivit...
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In this paper analytical solution of fastest mixing Markov chain problem over a sensor network with K-partite topology is provided. the solution procedure consists of Stratification of sensor network's connectivity graph and semidefinite programming. the studied topologies are evaluated in terms of asymptotic and per step convergence rates. the obtained optimal transition probabilities have been compared withthose obtained from Metropolis-Hasting method by comparing mixing time improvements numerically.
In wireless sensor networks, one of the key challenge is to achieve minimum energy consumption in order to maximize network lifetime. In fact, lifetime depends on many parameters: the topology of the sensor network, t...
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In wireless sensor networks, one of the key challenge is to achieve minimum energy consumption in order to maximize network lifetime. In fact, lifetime depends on many parameters: the topology of the sensor network, the data aggregation regime in the network, the channel access schemes, the routing protocols, and the energy model for transmission. In this paper, we tackle the routing challenge for maximum lifetime of the sensor network. We introduce a novel linear programming approach to the maximum lifetime routing problem. To the best of our knowledge, this is the first mathematical programming of the maximum lifetime routing problem that considers the operation modes of the node. Solution of the linear programming gives the upper analytical bound for the network lifetime. In order to illustrate the application of the optimization model, we solved the problem for different parameter settings for an example network.
Agile scrum software development has attracted a great deal of attention in recent years due to its flexibility, responsiveness and reliability. this article extends it to multi-vendor competing situations, and introd...
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Agile scrum software development has attracted a great deal of attention in recent years due to its flexibility, responsiveness and reliability. this article extends it to multi-vendor competing situations, and introduces a collaborative framework for agile scrum development. A case study confirms the usefulness and applicability of the proposed framework.
programming models for Pervasive Computing applications typically include the possibility of specifying software components according to multiple alternative versions, each optimized for a certain class of computing a...
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programming models for Pervasive Computing applications typically include the possibility of specifying software components according to multiple alternative versions, each optimized for a certain class of computing and communication technologies. A main mechanism provided by these programming models permits to dynamically select one of the alternative versions for the execution. this reconfiguration activity may be critical, from a performance point of view, when considering High-Performance Pervasive Computing applications, especially if the reconfiguration must be performed in such a way that the application semantics is respected (i.e. the reconfiguration is consistent). In this paper we show how to introduce consistent reconfiguration protocols for the ASSISTANT programming model, we exemplify two general protocols and we show experimental results for one of them.
In this work. K2Bi8Se13 material was ball-milled in order to develop nanostructures through the modification of structural features. Structural changes during ball-milling were followed by powder X-ray diffraction mea...
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In this work. K2Bi8Se13 material was ball-milled in order to develop nanostructures through the modification of structural features. Structural changes during ball-milling were followed by powder X-ray diffraction measurements, Scanning Electron Microscope images and High Resolution and conventional Transmission Electron Microscopy studies. Powder X-ray diffraction patterns presented a significant broadening in the peak patterns withthe increase of the ball-milling time that was attributed to the formation of nanocrystalline as well as amorphous material. TEM studies showed the formation of K2Bi8Se13 nanostructured material consisting of nanocrystals that were surrounded by an amorphous matrix. Preliminary measurements of thermoelectric properties have shown that Seebeck coefficient is increased in ball-milled samples where as thermal conductivity is decreased. Sintering process that was applied on the ball-milled material leads to its recrystallization and the growth of grains. (C) 2011 Elsevier B.V. All rights reserved.
In this paper a simple and efficient method is proposed for detecting eye positions which are used in Neuro-Linguistic programming (NLP) as clues for the human internal representational system and mental activity. the...
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In this paper a simple and efficient method is proposed for detecting eye positions which are used in Neuro-Linguistic programming (NLP) as clues for the human internal representational system and mental activity. the algorithm takes as input a square crop of a face and locates the eyes using a fast and efficient color-based method. the gaze direction is then detected based on the relative position of the iris and the sclera, using vertical and horizontal integral projections inside the bounding box of each eye.
In designing safe and reliable interlocking systems for railways which are compatible withthe related CENELEC (European Committee for Electrotechnical Standardization) standards semi-formal methods and diverse progra...
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In designing safe and reliable interlocking systems for railways which are compatible withthe related CENELEC (European Committee for Electrotechnical Standardization) standards semi-formal methods and diverse programming techniques are highly recommended (HR). EN 50128 (where methodologies to build failsafe software for railway applications are defined) recommends the use of Automata and Petri Nets (PNs) as semi-formal methods to build failsafe interlocking software for railway applications. In this paper interlocking software design which is achieved by using automata and PNs is explained where they were used synchronously as a voting system.
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