The recent growth in traffic loads in cellular networks has seen the need for a better use of system resources as its expansion is expensive. In the cellular base station (CBS), the bandwidth availability is limited. Thus, in cellular networks the call admission control greatly influences the system performance because it determines the bandwidth use of the CBSs. The network performance can be evaluated by parameters such as new call blocking probability, handoff call blocking probability and bandwidth utilization. This work proposes a call admission control that carries out the bandwidth borrowing when a call arrives and there is not enough bandwidth. The system makes use of a heuristic mechanism that determines the available bandwidth...
ISBN: 978-3-6392-4463-2
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Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! The Canadian pipe mine, also known as the McNaughton tube was a type of landmine deployed in Britain during the invasion crisis of 1940-1941. It comprised a horizontally bored pipe packed with explosives – once in place this could be used to instantly ruin a road or runway thereby denying its use by an enemy. Soon after the end of the war, almost all the Canadian pipe mine installations were removed. However, a small number were missed and rediscovered many years later when it was necessary to deal with them with great care. This happened in April 2006 when 20 unexploded pipe mines were discovered under a runway at a former Royal Navy air base, HMS Daedalus, Lee-on-Solent, Hampshire. 60 feet...
ISBN: 978-6-1338-4641-8
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Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Le Cap Sizun est un sloop, langoustier reconstruit a Audierne en 1990, qui prend la mer regulierement : balades en ete, participation aux manifestations de rassemblement des greements traditionnels a Douarnenez et Brest, etc. Son ancienne immatriculation etait : AU 1991. La nouvelle est :AD 815541 (Audierne). Le bateau Cap Sizun est l'heritier, dans sa construction, des thoniers primitifs qui etaient grees de voiles au tiers (genre Bisquine). Le maniement des voiles sur ce genre de greement est plus complique puisqu'il implique de passer les vergues au bord oppose a celui qui recoit le vent et ca a chaque virement de bord. De plus c'est la drisse d'itague qui servait de haubans (Solidite...
ISBN: 978-6-1317-5645-0
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Книга по требованию
Дата выхода: июль 2011
Fluid penetration into capillary tubes resulting from the interplay between solid-liquid adhesive interactions and liquid-liquid cohesive interactions is a ubiquitous phenomenon. A wide variety of technological applications, e.g. oil extraction through porous rocks, washing process with detergents, surface coating etc., are based fundamentally on capillarity effects. As a result, studies with respect to the physics of capillary flows, both from the engineering and applied sciences and from a theoretical point of view, have been constantly renewed for almost a century. This work consists of two parts. The first part presents experimental investigations on capillary flow of simple liquids. In the second part, capillary flow of liquids...
ISBN: 978-3-8383-9711-5
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Дата выхода: июль 2011
This work mainly focuses on the behavior of gas sensors base on carbon nanotube (CNT) bundles in various circumstances. The extraordinary properties of the CNT, the commonly used methods for CNT synthesis and the huge potential applications of the CNT, including gas detection, were reported. The effects of operating and pretreating parameters, such as heating, increasing in fluxing gas, pre- annealing and acidic stirring at various conditions, were thoroughly studied. Some abnormal behaviors of the CNT bundles, that took place during the investigation, have been discovered and discussed in the work. From the experimental results, the optimal condition for operating and pretreating of the CNT-based gas sensors was suggested. Данное...
ISBN: 978-3-8433-5047-1
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Книга по требованию
Дата выхода: июль 2011
One-dimensional structures, such as nanofibers, have the smallest dimension for efficient transport of electrons and optical excitations, and can be used in diverse applications such as nano-electronics and photonics as building blocks in bottom-up assembly, which could overcome fundamental limitations of conventional microfabrications based on lithography. Unfortunately, there has not been a well-established technology to fabricate nanofibers. Electrostatic generation or electrospinning, an “old” technology patented in 1934, is promising to fill the blank. The technology has recently been “re-vitalized” to fabricate versatile ultrafine fibers. This book develops a general methodology for fabrication of versatile inorganic fibers...
ISBN: 978-3-6392-3026-0
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Книга по требованию
Дата выхода: июль 2011
Beat-to-beat oscillations in heart-rate and systolic arterial-pressure are known to be modulated by the autonomic nervous system. Their characteristics are used in psychophysiology to assess the autonomic reaction to psychological/cognitive challenges (PC). However, factors other than autonomic modulation may strongly influence the estimation of these cardiovascular indexes (CI). Here, two such confounding factors were investigated in detail. First, the between-task and inter-individual differences in respiratory patterns, especially in PC involving speech were found to be strongly reflected in the CI. The second factor is the presence of within-task dynamics in the CI reaction to PC. Since these two factors are intrinsic in the reaction...
ISBN: 978-3-6392-8823-0
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Le Carnival Fantasy est un bateau de croisiere appartenant a la compagnie de croisiere Carnival Cruise Lines. Le Carnival Fantasy est le 1er navire de la classe fantasy de la societe Carnival Cruise Lines. Il navigue actuellement sur 4 jours ou 5 jours entre La Nouvelle-Orleans, Cozumel et Progresso. Il a officiellement ete mis en service en 1990. Il etait initialement base a Miami en Floride. En raison d'une maree noire sur le fleuve Mississippi survenue le 23 juillet 2008, il a ete expatrie a Mobile en Alabama, jusqu'a ce qu'il beneficie de son « evolution of fun » (programme de restauration des navires de...
ISBN: 978-6-1317-6959-7
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Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Carolwood Pacific Railroad est le nom du chemin de fer miniature construit en partie par Walt Disney dans son jardin. Le nom provient de la rue ou residait Walt Disney : la Carolwood Drive dans le quartier d'Holmby Hills a Los Angeles et du fait que les noms des societes de chemin de fer du XIXe siecle comporte la precision sur quelle facade oceanique elles etaient situees. Ce train est en partie a l'origine des parcs Disney car un train miniature a toujours etait present dans les projets de Disneyland. La passion de Walt pour les trains l'amena aussi a vouloir utiliser des systemes de transports ferroviaires pour resoudre les problemes de congestion des villes et integra donc des exemples de...
ISBN: 978-6-1317-6042-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Casting is a manufacturing process by which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify. The solidified part is also known as a casting, which is ejected or broken out of the mold to complete the process. Casting materials are usually metals or various cold setting materials that cure after mixing two or more components together; examples are epoxy, concrete, plaster and clay. Casting is most often used for making complex shapes that would be otherwise difficult or uneconomical to make by other methods. Данное издание не является оригинальным. Книга...
ISBN: 978-6-1327-8063-8
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Книга по требованию
Дата выхода: июль 2011
The share market of hydrogen is increasing with the implementation of fuel cell systems and the growing demand for zero-emission fuels. Hydrogen production by using metal catalyst will need to increase with this growing market. However, some carbon is deposited on the catalyst but there was a window of operation where the deposited carbon did not have too great an effect on hydrogen production under different conditions. Carbon formation deactivates the catalyst, resulting in short life cycles. In order to improve process performance, in particular minimizing catalyst deactivation caused by carbon formation and maximizing the yield of hydrogen product, the addition of the promoters to catalyst is the most familiar method. The book is...
ISBN: 978-3-8433-9295-2
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! La catapulte est une machine de guerre utilisee pour lancer des projectiles a grande distance, sans emploi d’aucun explosif — comparable sur ce point a d’autres engins de siege en usage pendant l'Antiquite et au Moyen Age. Semblable a une arbalete geante tirant de grandes fleches, la catapulte est capable de projeter de lourdes pierres et parfois meme des cadavres ou diverses dejections (afin de saper fortement le moral de l'ennemi, lui faire peur, voire propager des infections) a l'aide d'un cable tendu. La force de propulsion a d’abord ete donnee par la flexion d’un arc geant puis, dans les engins plus perfectionnes par la torsion d’un « ressort » constitue d’un faisceau de...
ISBN: 978-6-1328-0550-8
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! In statistics, engineering, and medical research, censoring occurs when the value of an observation is only partially known.For example, suppose a study is conducted to measure the impact of a drug on mortality. In such a study, it may be known that an individual's age at death is at least 75 years. Such a situation could occur if the individual withdrew from the study at age 75, or if the individual is currently alive at the age of 75.Censoring also occurs when a value occurs outside the range of a measuring instrument. For example, a bathroom scale might only measure up to 300 lbs. If a 350 lb individual is weighed using the scale, the observer would only know that the individual's weight is...
ISBN: 978-6-1317-0833-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Centrifugal Railway was the name of a number of early looping roller coasters that were built in Western Europe in the middle of the 19th century. The rides were similar in their basic design to many modern day shuttle roller coasters (i.e., they did not make a complete circuit), but with only one lift hill and no launch. A single roller coaster car would ascend to the tallest point on the coaster before descending rapidly down the same hill and then passing through the central loop at high speeds with large amounts of centripetal and reactive centrifugal force. The size of these Centrifugal Railways differed; some were purported to have vertical loops of a mere 6.5 feet (2.0 m), while others...
ISBN: 978-6-1327-5194-2
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Книга по требованию
Дата выхода: июль 2011
Ceramic insulators are widely used in the electrical power transmission system. They possess a number of valuable properties: high mechanical and electrical strength, good chemical resistance etc. As these are clay products, their properties are related to the structural modification of clay when they are fired. The properties of these types of materials are determined to a considerable extent by the mullite content, the amount and the properties of the feldspar glass, and also the volume of sealed pores. Local ceramic industry was faced yield losses as the rejection rate was very high for the production of ceramic insulator. The research work was carried on ceramic body to improve the quality of these materials. The target audience of...
ISBN: 978-3-6393-0641-5
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! Ceramic engineering is the science and technology of creating objects from inorganic, non-metallic materials. This is done either by the action of heat, or at lower temperatures using precipitation reactions from high purity chemical solutions. The term includes the purification of raw materials, the study and production of the chemical compounds concerned, their formation into components and the study of their structure, composition and properties. Ceramic materials may have a crystalline or partly crystalline structure, with long-range order on atomic scale. Glass ceramics may have an amorphous or glassy structure, with limited or short- range atomic order. They are either formed from a...
ISBN: 978-6-1308-8040-8
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Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
High Quality Content by WIKIPEDIA articles! A cesspit, or cesspool is a pit, conservancy tank, or covered cistern, which can be used for sewage or refuse. Traditionally, it was a deep cylindrical chamber dug into the earth, having approximate dimensions of 1 meter diameter and 2-3 meters depth. Their appearance was similar to that of a hand-dug water well. In the UK a cesspit is a sealed tank for the reception and temporary storage of sewage; in America this is simply referred to as a "holding tank". Because it is sealed, the tank must be emptied frequently — in many cases as often as weekly. Because of the need for frequent emptying, the cost of maintenance of a cesspit can be very high. Данное издание не...
ISBN: 978-6-1338-2797-4
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Cetane number or CN is a measurement of the combustion quality of diesel fuel during compression ignition. It is a significant expression of diesel fuel quality among a number of other measurements that determine overall diesel fuel quality. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 978-6-1337-8672-1
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Книга по требованию
Дата выхода: июль 2011
In this book CFD simulations of the hydrodynamic behaviour of a fluidized bed reactors are described and shown. Two main topics have been analyzed: the transition from bubbling to slugging fluidization regimes (in the first section) and the evolution of volatiles from a submerged gas-emitting particle (in the second section). Both the analysis have been performed with a commercial code (CFX 4.4) using the granular kinetic theory. The fundamental principles of fluidization and the two-phase flows physics as well the basic approaches to computational fluid dynamics modelling and numerical methods of differential equations solution have been presented in the firs introductory chapters. In the following sections the computational results...
ISBN: 978-3-6393-1429-8
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Книга по требованию
Дата выхода: июль 2011
This Project is to investigate the existence of chaotic behavior in general mechanical system. The report begins with an introduction of background and follows by studying the classic dynamic systems and the properties of chaotic vibration. Several techniques are introduced and demonstrated to qualify as well as quantify the chaotic behavior. After revision of those techniques, a mechanical system is studied and finally a new mechanical system is investigated. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 978-3-8383-8523-5
Издательство:
Книга по требованию
Дата выхода: июль 2011
Ir. Sivarao Subramonian, P.Eng, Dr. Anand, Dr. Warikh
In this research, eggshell (CaCO3) as a natural composite bioceramics is used to make a new improvement in materials world. The main purpose use eggshell as a new thing because the major component of eggshells is calcium carbonate (CaCO3). Chicken eggshell (ES) containing 95% Calcium Carbonate and has a potential as the important bio-filler. Investigation of mechanical properties and behavioral of Calcium Carbonate composite compared with virgin matrix, Polyethylene (PE) will carry out as a new research. There are three types of test such as tensile, flexural, and creep which is purposed to search the behavioral and the best mechanical properties among the fraction values of filler. The Modulus Elastic (E) has been improved with the ES...
ISBN: 978-3-8433-8630-2
Издательство:
Книга по требованию
Дата выхода: июль 2011
Die ursprunglich als Diplomarbeit verfasste Schrift beschreibt den Aufbau eines preiswerten Messplatzes zur optischen Charakterisierung von diffraktiv-optischen Mikrostrukturen. Es wird in diesem Rahmen ein kompletter Messplatz konzeptioniert und sein Aufbau dokumentiert. Dem zu Grunde liegend wird zunachst die Fraunhofer-Beugung am linearen Binargitter und Bestimmung der Strukturtiefe aus dem Beugungsbild erlautert. Es wird auf das optische Messprinzip samt Beispielmessungen eingegangen. Besondere Beachtung findet die Darstellung der Implementierung des Messplatzes. Dies fuhrt von der Konzeptionierung uber die Konstruktion bis hin zur Auswertung mit dem Programm LabVIEW 8.2. Данное издание не является...
ISBN: 978-3-6391-0029-7
Издательство:
Книга по требованию
Дата выхода: июль 2011