Frederic P. Miller, Agnes F. Vandome, John McBrewster
Mobile phone tracking tracks the current position of a mobile phone even on the move. To locate the phone, it must emit at least the roaming signal to contact the next nearby antenna tower, but the process does not require an active call. GSM localisation is then done by multilateration based on the signal strength to nearby antenna masts. Mobile positioning, i.e. location based service that discloses the actual coordinates of a mobile phone bearer, is a technology used by telecommunication companies to approximate where a mobile phone, and thereby also its user (bearer), temporarily resides. The more properly applied term locating refers to the purpose rather than a positioning process. Such service is offered as an option of the class...
ISBN: 978-6-1306-0282-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! La mobilite est la propriete de se deplacer dans un espace. Cet espace peut etre virtuel : les informations circulent dans des reseaux par le biais de terminaux fixes ou portables. On peut parler de mobilite virtuelle. Cet espace peut etre social : on parle de mobilite sociale lorsque le statut social ou professionnel d’une personne change, ou qu’il est different de celui de ses parents. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 978-6-1339-3493-1
Издательство:
Книга по требованию
Дата выхода: июль 2011
Die Konvergenz der Medien, also das Zusammenwachsen der verschiedenen medialen Angebotsformen, bringt neueste Marktentwicklungen und Angebotsformen im Mediensektor mit sich. Dies, gepaart mit der immer grosser werdenden Bedeutung von Mobilitat und dem standigen Bedurfnis nach aktuellsten Informationen in unserer Gesellschaft, schafft Voraussetzungen fur Neuformatierungen innerhalb des mobilen Medienangebots, so auch: DAS MOBILE FERNSEHEN. TV-Sender, Telekommunikationsunternehmen, Netzbetreiber und Endgeratehersteller erwarten einen Milliardenmarkt. Die Verknupfung von mobiler Telefonie und mobilem Fernsehempfang gilt als neue Evolutionsstufe innerhalb des Prozesses der medialen Konvergenz. Sofern die entsprechenden Chips eingebaut...
ISBN: 978-3-6392-3957-7
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Le modelisme est une branche du maquettisme, definie comme une activite de loisirs consistant en la fabrication et le pilotage de modeles reduits a une echelle de reduction definie. Le modelisme est un loisir universel : l'homme a toujours voulu reproduire son environnement. Ainsi, par exemple, partout ou l'on rencontre des automobiles, on voit des enfants s'amuser avec des jouets qui reproduisent des automobiles, et on rencontre des amateurs de modelisme automobile partout dans le monde. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 978-6-1337-7727-9
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Mode of transport (or means of transport or transport mode or transport modality or form of transport) is a general term for the different kinds of transport facilities that are often used to transport people or cargo. Where more than one mode of transport is used for a journey, or for transport analysis, the journey can be described as multi-modal. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 978-6-1327-8070-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
The mineral processing research community has devoted enormous efforts to the modeling of mineral separators. While many efforts have been made to use only fundamental physics as a basis for the models, fluid flow patterns in separators are complex and the motion of particle swarms through fluids is difficult to describe. Even though computer codes for computational fluid dynamics are now very powerful, a reliable means of calculating the hindered settling velocity of a specific particle type within a polydisperse and polydense particle mixture has proved to be elusive. It is however an absolutely fundamental prerequisite to almost all model structures. In an effort to test the extent to which fundamental fluid mechanics can provide a...
ISBN: 978-3-8383-1680-2
Издательство:
Книга по требованию
Дата выхода: июль 2011
Machining induced residual stress has been a research topic since the middle of the twentieth century. Experimental findings, analytical modelling, finite element modelling and various combinations of those have been proposed. Currently, computational models have great value in increasing the understanding of the cutting process and in reducing the number of experiments which traditionally are used for tool design, process selection, machinability evaluation, and virtual manufacturing. This work proposes a coherent and accurate study of the industrial process of machining pointing out the difficulties when considering a finite element model. An extensive work has been carried out comparing the numerical results which can be achieved...
ISBN: 978-3-6392-3997-3
Издательство:
Книга по требованию
Дата выхода: июль 2011
Cement manufacturing is one of the most energy intensive processes requiring ~ 4 GJ/ ton of cement. Most of the energy consumption and production of carbon dioxide in cement manufacturing occurs in manufacturing of cement clinkers. It is therefore imperative to use recent advances in understanding of physics and computational methods to improve clinker manufacturing. This book takes first steps in that direction by discussing methodology and state of the art computational models to simulate clinker manufacturing. Aimed at practicing engineers and researchers, this book will give readers a capability to simulate rotary cement kilns and associated equipments. Considering the central role of kilns in clinker manufacturing, there is a...
ISBN: 978-3-6391-1219-1
Издательство:
Книга по требованию
Дата выхода: июль 2011
The knowledge of solid-liquid equilibrium (SLE) and availability of a validated computer based model is of great technical interest for developing and designing separation processes, such as crystallization and fractionation and solving industrial problems. The latest version of Statistical Associating Fluid Theory (SAFT), Perturbed Chain-SAFT (PC-SAFT), is very much successful for highly non-ideal macro-molecular weight system such as polymers. With the experimental SLE data available in literature for low molecular weight n-alkanes and aromatic compounds both at atmospheric and elevated pressure, the suitability of the developed SLE model based on PC-SAFT was tested. Subsequently sensitivity study was performed for polyethylene. The...
ISBN: 978-3-8383-1492-1
Издательство:
Книга по требованию
Дата выхода: июль 2011
The planar solid-oxide fuel cells (PSOFCs) have emerged as one of the promising candidates for future energy system because of their high energy efficiency, fuel flexibility, zero emission, modularity and high tolerance to the fuel impurities. However, for large-scale commercialization of the PSOFC technology, there is a strong need of developing a reliable and highly efficient PSOFC power system. Development of such a reliable PSOFC based power system requires knowledge of the several feedback effects from the power electronics system and the application loads that may impact the PSOFC stack and the system as a whole. Therefore, it is important to develop analytical methodologies to investigate and mitigate the effects of these...
ISBN: 978-3-6390-7942-5
Издательство:
Книга по требованию
Дата выхода: июль 2011
A new two-phase model, to predict Electrical Submersible Pumps (ESP) head performance under two- phase flow conditions, including a set of one- dimensional mass and momentum balance equations was developed. A new shock loss model incorporating rotational speeds has been proposed. A new correlation, for drag coefficient and interfacial characteristic length effects, with rotational speed has been obtained through fitting the model results with Beltur (2003) and Zapata (2003) partial experimental data. The model predicts pressure and void fraction distributions along impellers and diffusers and also predicts the pump head performance under different fluid properties, pump intake conditions, and rotational speeds. The new two-phase model is...
ISBN: 978-3-8383-0896-8
Издательство:
Книга по требованию
Дата выхода: июль 2011
Research in multibody systems has been growing rapidly in parallel with developments in computer sophistication since this has enabled complex real systems to be analysed more easily and quickly. One of the most difficult problems in modelling multibody systems is flexibility, which requires more simplifying assumptions than other phenomena. This monograph explains how homogenous transformations can be used to model kinematic chains with both rigid and flexible links. Flexible links are modelled using three approaches: both the classical and modified rigid finite element method as well as the modal method. Each of these methods is formulated in such a way that it is possible to generate the equations of motion for any system of rigid and...
ISBN: 978-3-8383-1040-4
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Le modelisme ferroviaire est une activite de modelisme concernant les trains et le monde ferroviaire, et tout particulierement leur reproduction suivant une echelle et un theme definis, ainsi que leur exploitation. Il s'agit de l'evolution du simple jeu avec un train miniature ou du fait de jouer au train electrique : le but de ce loisir technique et artistique est de constituer une maquette realiste sur laquelle les trains seront le sujet central. Le modelisme ferroviaire consiste alors, pour la plupart de ses pratiquants, a construire un reseau (parfois improprement appele « circuit ») amenage et decore, sur lequel le modeliste fera circuler ses trains. Данное издание не...
ISBN: 978-6-1318-3762-3
Издательство:
Книга по требованию
Дата выхода: июль 2011
The main objective of the work reported in this monograph is the fabrication of an experimental apparatus to detect slowly evolving anomalies (i.e., decrease in stiffness due to fatigue failure) in complex mechanical systems at an early stage by observing time series data of the available ultrasonic and performance measuring sensors. The information on evolving anomaly will serve as an input to the life extending control policy that will, in turn, generate corrective actions to mitigate fatigue crack damage in the specimen structures and thereby extend the remaining life of the system without any significant loss in performance. The monograph presents the design requirements for the experimental testbed. Physical modeling gives out the...
ISBN: 978-3-6391-3212-0
Издательство:
Книга по требованию
Дата выхода: июль 2011
The individual tree growth and yield models, such as stem taper, volume, biomass and height growth, play an important role in forest growth and yield prediction and projection systems. The reliability of a forest growth and yield system has been based on estimator characteristics such as consistency, efficiency and sufficiency. Recently, modeling techniques have received a great deal of attention in forest growth and yield modeling. This book, therefore, provides mathematical modeling approaches for stem taper, volume, biomass and tree height. Three modeling techniques of nonlinear least squares (NLS) regression, simultaneous fitting procedure (SUR), and nonlinear mixed-effects (NLME) modeling procedures were evaluated. This book will be...
ISBN: 978-3-6391-4237-2
Издательство:
Книга по требованию
Дата выхода: июль 2011
Severe accidents (SA) in LWR occur when reactor vessel water decreases and there is no available water for core cooling. During SA the reactor core could, after partial/total melt down, pour into the lower plenum. The study of the interaction of melt fuel with water is the objective of MFCI (Melt Fuel Coolant Interaction). MFCI is an important issue in reactor safety . A SA can lead to energetic (steam explosion) or non-energetic (melt quenching) interactions in-vessel or ex-vessel. FARO facility at JRC-Ispra simulated MFCI experiments under real conditions. Pre-test/post-test analytical activities using COMETA code were carried out. The code was assessed based on FARO tests. Limitations and uncertainties in the application to a full...
ISBN: 978-3-8383-1108-1
Издательство:
Книга по требованию
Дата выхода: июль 2011
A solar reactor consisting of a cavity-receiver containing an array of tubular absorbers is considered for the high temperature step of the zinc/zinc oxide thermochemical redox cycle using concentrated solar energy. The reactor is dimensioned, analyzed and optimized with the aim of maximizing efficiency and reaction conversion. 2D and 3D simulations of an 8kW reactor are implemented. Temperature distribution, reaction efficiency, tube efficiency and reaction conversion are analyzed to find the most promising reactor design. Additionally, basic knowledge in state of the art concentrating solar technology, design of experiments, radiative heat transfer, Mie theory, diffusion, reaction kinetics and in how to approach modeling tasks is...
ISBN: 978-3-6391-0013-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
The control of uncertain non-linear plants is a challenging task. Adaptive Fuzzy Controllers have been applied widely for the control of such processes. The book discusses one particular approach to the fuzzy controllers. Adaptive Model Free Fuzzy Control is a goal oriented approach which tries to control the plant based on the information available without specifically modeling the plant. The prime objective of the controller is to reduce the control error. The book discusses two different model free control structures and their relative merits and de-merits. Four different fuzzy identification schemes have been discussed which can be used to train the controller parameters. The simulation results from both the controllers have been...
ISBN: 978-3-6392-1676-9
Издательство:
Книга по требованию
Дата выхода: июль 2011
Effective scheduling of operations in the process industries has great potential for ensuring high economic returns. Traditionally, production scheduling problems in these industries have been solved using mathematical methods. The mathematical formulations, however, are still difficult to derive and severely inhibit the attainment of the potential economic benefits. Therefore, an alternative method for the formulation of scheduling problems in the process industries would be very helpful. In this study, the application of Petri nets for modelling and scheduling of batch processes has been investigated. Timed Place Petri nets were evaluated and found to be very promising for the formulation of scheduling problems in batch and mixed...
ISBN: 978-3-6390-2253-7
Издательство:
Книга по требованию
Дата выхода: июль 2011
This book examines the nature of structural complexity in manufacturing networks. Structural complexity is the information required to monitor manufacturing systems with specific focus on the systems that have a network structure and the effect of inter-dependency of components within the system on the performance. This research proposes novel structural complexity measures for a variety of management problems, i.e. routing, production status change, sequence disorder and buffer size variation. With the proposed measures, structural complexity can be applied to broader types of systems, i.e. series-parallel system, buffer system and rework system. In addition, a number of heuristic approaches are implemented in a computer program for re-...
ISBN: 978-3-6390-9742-9
Издательство:
Книга по требованию
Дата выхода: июль 2011
This book introduces BlastSim – a physics-based simulation platform to model and simulate suicide bombing events. The BlastSim software is designed to test, analyze, and validate the results of different explosive and injury model combinations under various conditions with different sets of parameters, such as explosive and crowd formation characteristics, blockage and human shielding effects, fragmentation and shrapnel, and the bomber’s position in 2- and 3- dimensional environments. The suicide bombing event can also be re-created for forensic analysis. The number of fatalities and injured after a suicide bombing event can be predicted using this software with 91% accuracy. The assessment of an explosion’s effect on a crowd can...
ISBN: 978-3-6390-8956-1
Издательство:
Книга по требованию
Дата выхода: июль 2011
Existing model reduction techniques for lower order controller design have certain limitations in terms of their applicability, reliability and accuracy. The main objective of this book is to present new tools that overcome these limitations for a large class of linear time invariant fixed and interval systems. This book presents two fold contributions for control system design problem. First, the improved model order reduction methods are described for linear time invariant fixed and interval systems. Second, suppose a reduced order controller is designed from the reduced order model for the original higher order system, it does not guarantee the stability of the resulting closed loop system. Thus, the problem of stabilization of the...
ISBN: 978-3-6391-5879-3
Издательство:
Книга по требованию
Дата выхода: июль 2011
Vacuum arc remelting (VAR) is a secondary melting process for production of metal ingots with elevated chemical and mechanical homogeneity for highly demanding applications. One of the most important problems of Vacuum Arc Remelting (VAR) is the lack of chemical homogeneity in the produced ingots. Past numerical studies of VAR have demonstrated that the characteristics of the mushy zone, the fluid flow and their interaction are the key factors defining the severity and the character of macrosegregation in the produced ingots. Thus, a new numerical model of the complete VAR process, capable of representing two distinctive morphologies of mushy zone: rigid columnar structure and slurry of free floating equiaxed grains is introduced. The...
ISBN: 978-3-8364-5948-8
Издательство:
Книга по требованию
Дата выхода: июль 2011