In the article we concentrate on timing aspect of information propagation on social web. The aim of the information producer is to transfer the information to the broad audience via social web. Producer needs to ident...
详细信息
ISBN:
(纸本)9783642106866
In the article we concentrate on timing aspect of information propagation on social web. The aim of the information producer is to transfer the information to the broad audience via social web. Producer needs to identify interesting content and publish it to social web in the right time. Right timing of information publishing can increase the potential of spreading it. In the article we describe the process of interesting content identification and we present a model for right moment estimation of information publishing. Our estimation is based on producer's web usage mining, web topic tracking and event identification.
Along with the service sector plays a more critical role in the development of world economy, conventional manufacturer puts more focus on bundling service with physical products to gain competitive advantage. Based o...
详细信息
ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
Along with the service sector plays a more critical role in the development of world economy, conventional manufacturer puts more focus on bundling service with physical products to gain competitive advantage. Based on the traditional theory of supply chain management, this paper proposes Service Supply Chain to cover the supply chains for both service industry and manufacturing industry. Then a Product-Service Matrix is established to reveal the nature of the service supply chain. A Servitization-Globalization Matrix is developed to describe the evolution footprint from conventional manufacturing factory to Global Service Network and Global Manufacturing Network. Finally, this paper establishes a conceptual framework for service supply chain management, and the management processes are proposed and compared with other model.
Procurement and replenishment are always susceptible to uncertain customer demand and also to purchase price volatility. Single factor approaches such as long-term contracts, spot procurements, or supply contracts wit...
详细信息
ISBN:
(纸本)9783642104299
Procurement and replenishment are always susceptible to uncertain customer demand and also to purchase price volatility. Single factor approaches such as long-term contracts, spot procurements, or supply contracts with options, can mitigate some specific aspect of the overall risk, but such approaches are often of limited value when several types of risk prevail. This study contributes to the problem of procurement by presenting a portfolio approach that simultaneously deals with the two major types of procurement risk, price and inventory. The specific model presented jointly considers both the procurement planning and risk hedging problems. The model is in the form of a multi-stage stochastic program in which replenishment decisions are made at various stages along a time horizon, with replenishment quantities being jointly determined by the stochastic demand and the price dynamics of the spot market. The model attempts to minimise the risk exposure of procurement decisions measured as conditional value-at-risk. Numerical experiments to test the effectiveness of the proposed model. The results indicate that the proposed model can fairly reliably outperform other approaches, especially when either the demand and/or prices exhibit significant variability.
The development of Large Vocabulary Continuous Speech Recognition systems involves issues as: Acoustic Phonetic Decoding, Language Modelling or the development of appropriated Language Resources. In the state of the a...
详细信息
ISBN:
(纸本)9783642124327
The development of Large Vocabulary Continuous Speech Recognition systems involves issues as: Acoustic Phonetic Decoding, Language Modelling or the development of appropriated Language Resources. In the state of the art, new techniques for reusing Language Resources of more resourced related languages is becoming of great interest, and there is also a growing interest on Multilingual systems. This paper describes the initial experiments on multilingual recognition and cross-lingual adaptation carried out in order to create a robust Multilingual Speech Recognition system for the Basque context. The interest on Multilingual Systems arouses because there are three official languages in the Basque Country (Basque, Spanish, and French), and there is much linguistic interaction among them, even if Basque has very different roots than the other two languages.
To evaluate the soundness of multidimensional binary signal analysis based on Boolean factor analysis theory and mainly of its neural network implementation, proposed is a universal measure - informational gain. This ...
详细信息
ISBN:
(纸本)9783642106866
To evaluate the soundness of multidimensional binary signal analysis based on Boolean factor analysis theory and mainly of its neural network implementation, proposed is a universal measure - informational gain. This measure is derived using classical informational theory results. Neural network based Boolean factor analysis method efficiency is demonstrated using this measure, both when applied to Bars Problem benchmark data and to real textual data. It is shown that when applied to the well defined Bars Problem data, Boolean factor analysis provides informational gain close to its maximum, i.e. the latent structure of the testing images data was revealed with the maximal accuracy. For scientific origin real textual data the informational gain provided by the method happened to be much higher comparing to that based on human experts proposal.
Laser trackers have been widely used in many industries to meet increasingly high accuracy requirements. In laser tracker measurement, it is complex and difficult to perform an accurate error analysis and uncertainty ...
详细信息
ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
Laser trackers have been widely used in many industries to meet increasingly high accuracy requirements. In laser tracker measurement, it is complex and difficult to perform an accurate error analysis and uncertainty evaluation. This paper firstly reviews the working principle of single beam laser trackers and state-of-the-art of key technologies from both industrial and academic efforts, followed by a comprehensive analysis of uncertainty sources. A generic laser tracker modelling method is formulated and the framework of the virtual tracker is proposed. The VLS can be used for measurement planning, measurement accuracy optimization and uncertainty evaluation. The completed virtual laser tracking system should take all the uncertainty sources affecting coordinate measurement into consideration and establish an uncertainty model which will behave in an identical way to the real system.
The paper presents the results of the authors' studies which consisted in modeling the processes taking place in an enterprise characterized by manufacturing of complex products (machine building) of a very long p...
详细信息
ISBN:
(纸本)9783642124327
The paper presents the results of the authors' studies which consisted in modeling the processes taking place in an enterprise characterized by manufacturing of complex products (machine building) of a very long production cycle. The production environment of a diesel ship engine is described. The idea of the so-called domains of the CIMOSA concept which has been used for the modeling was explained. The article introduces the multi-agent system idea on the basis of which a model will be built and used in the simulation experiment. Finally the algorithm for planning process is presented.
The assembly systems need to react frequently on everyday changes like introduction of new products and variants, load variations, change of process modules, etc. In order to answer these challenges more effectively, ...
详细信息
ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
The assembly systems need to react frequently on everyday changes like introduction of new products and variants, load variations, change of process modules, etc. In order to answer these challenges more effectively, quickly, automatically and with sustainability, new methods are required. The paper proposes as one basic part of the solution a concept called Emplacement to specify, manage and use the information of process equipment in modular, reconfigurable and agile systems like Evolvable Assembly Systems. First part of the paper presents shortly the framework where the proposed concept can be applied in the phases of systems design, deployment and execution. The essential is the link between the assembled product and equipment module through the processes combining the two former. The second and main part focuses on introduction of the Emplacement concept itself. The concept has three main components Emplacement, Blue Print and History Container providing the electronic description of a module in XML based format. The first two are standardised and they provide the virtual representation of the production modules including essential information like mechatronics interfaces, capabilities i.e. skills, properties (both business and technical), CAD models, datasheets, etc. The interconnection between and details of these languages are discussed in the following chapters.
The practice of process mining concerns the reconstruction of complete process flow diagrams from data logs. In an increasingly complex business environment, there is a need for managers to understand the processes th...
详细信息
ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
The practice of process mining concerns the reconstruction of complete process flow diagrams from data logs. In an increasingly complex business environment, there is a need for managers to understand the processes they already have in place. Process mining facilitates the automatic reconstruction of a flowchart description based on a set of execution traces. The process mining approach featured in this paper utilises a Genetic Programming approach to process mining using a graph representation. The results from a number of experiments are detailed in this paper and point to its potential as a practical tool for use in industry. The principles investigated in this approach form a core component of future research by the authors in the area of process disparity identification.
Nowadays there are several applications that use swarm robotics for solving research tasks and resource exploitation. Most of these applications are based on complex agents that require explicit communication between ...
详细信息
ISBN:
(纸本)9783642124327
Nowadays there are several applications that use swarm robotics for solving research tasks and resource exploitation. Most of these applications are based on complex agents that require explicit communication between them. These systems are difficult to introduce in certain environments because of these features, where agents can not always communicate between them and where it would be necessary a large swarm. This paper presents a swarm system for a collective resource exploitation. The main features of the agents of this system are their simplicity and they do not communicate with each other in explicit way. A microscopic model that shows the individual performance of agents has been proposed, and a macroscopic model that describes the overall swarm system has been provided. Several tests that show the convergence of the swarm towards the best resource in an Unknown environment have been analyzed.
暂无评论