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Novel Approach for Quantum Mechanical Based Autonomic Communication

Novel Approach for Quantum Mechanical Based Autonomic Commun...

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Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, Computation World:

作者： Laszlo Gyongyosi Laszlo Bacsardi Sandor Imre Department of Telecommunications Budapest University슠of슠Technology슠and슠Economics Budapest Hungary

The modern networks have an increasing complexity and the Internet - in nowadays construction - is not seem to be suitable for handling the near future's service demands. The quantum mechanical based ACE (Quantum Autonomic Communication Element - QACE) component model uses a CASCADAS based classical language to communicate with the model elements, and uses a closed, non-classical quantum mechanical based language inside the component model. The QACEs classical communication level has the same role as in the classical ACEs, thus it is used to describe the network and network situations, etc. However, the local quantum state inside the QACE is used as a mechanism to introduce changes the QACE's classical communication level. We integrate the classical ACE component model with a quantum mechanical based lower level, and we construct the quantum cellular automata based version.

关键词： Quantum mechanics Quantum computing Computer networks Biological system modeling Web and internet services Telecommunication computing IP networks Physics computing Environmental factors Quantum cellular automata

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An Energy Efficient Cellular Mobile Network Planning Algorithm

An Energy Efficient Cellular Mobile Network Planning Algorit...

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IEEE Conference on Vehicular technology (VTC)

作者： Istvan Toros Peter Fazekas Department of Telecommunications Budapest University슠of슠Technology슠and슠Economics Budapest Hungary

As energy efficiency is becoming more important in the past few years, the aim of this study is to develop and present a cellular network deployment method, that takes into account energy efficiency as optimization criterion. An algorithm is shown that is able to place base stations and determine main lobe directions of antennas automatically over an area, as well as basically determines the amount of radio resources to be handled by each sector, given that a set of traffic demands must be fulfilled. This coverage of demands is then followed by an optimization task, whose aim is to reduce the total power consumption of the network. The performance of this method is discussed by showing numerical results, as well as the advantages and shortcomings of this approach are presented.

关键词： Power demand Base stations Planning Transmitters Interference Optimization Signal to noise ratio

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Laser Manufacturing of Mechanical Structures in Flexible Substrates for Lifetime Increasing

Laser Manufacturing of Mechanical Structures in Flexible Sub...

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Electronics System-Integration technology Conference, ESTC

作者： Richard Berenyi Gabor Juhasz Zsolt Illyefalvi-Vitez Department of Electronics Technology Budapest University슠of슠Technology슠and슠Economics Budapest Hungary

Laser manufacturing has several advantages to traditional processes. It is non-contact manufacturing, flexible and controllable. Because of these advantages laser drilled microvias are commonly used in the microelectronics industry. However possibilities of laser ablation can be exploited in several other fields as well. These are: window opening for TAB IC, bending windows, ditches for microfluidics. The aforementioned applications require large processed area, controlled ablation depth and wall angle. The production of the so called bending window is a unique application of laser material processing. Bending windows can be used in flexible circuits to define the exact position of deformation. It is done by reducing the thickness of the flexible substrate in a well defined, narrow line. The effect of the material removal on the mechanical properties, such as tensile strength, flexibility, durability was investigated. Based on our experiences a new "multiple V" shaped bending window was developed from which longer lifetime and better mechanical properties are expected. Using the above mentioned procedure "bend and stay" substrates are likely to produce

关键词： Flexible manufacturing systems Laser ablation Mechanical factors Manufacturing processes Microelectronics Manufacturing industries Microfluidics Process control Production Laser applications

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Surviving multiple network failures using shared backup path protection

Surviving multiple network failures using shared backup path...

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IEEE Symposium on Computers and Communications (ISCC)

作者： B.G. Jozsa D. Orincsay A. Kern HSNLab DTT Budapest University슠of슠Technology슠and슠Economics Budapest Hungary

This paper studies the possibilities of protecting backbone networks from multiple simultaneous failures. Although methods that prepare the networks to survive single failures were extensively studied in the literature, in order to provide extra high availability for mission-critical applications, the possibility of more than one simultaneous failure has to be considered too. The general technique of protecting a traffic flow is to establish a backup path where the traffic is redirected when a failure occurs along its active path. Using this technique the total capacity reservation is at least doubled compared to the non-protected case. To avoid this large amount of bandwidth reservation by the backup paths, the shared backup path protection paradigm can be used, which is a promising scheme favored by the Internet engineering task force. In this paper the two backup path based protection scheme is introduced, which provides survivability against any two simultaneous failures. Further, a novel shared protection strategy is proposed that improves the failure tolerance of the traditional single backup path based protection. The performance of the different protection types is examined through simulations.

关键词： Protection Multiprotocol label switching Communication system traffic control Availability Mission critical systems Telecommunication traffic Spine IP networks Resilience Bandwidth

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Improving efficiency of information sources in wireless ad hoc networks with the push — pull hybrid model

Improving efficiency of information sources in wireless ad h...

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International Conference on Software, Telecommunications and Computer Networks (SoftCOM)

作者： Minh Tri Tran Vilmos Simon Department of Telecommunications Budapest University슠of슠Technology슠and슠Economics Budapest Hungary

ISBN: (纸本)9781424449736

In self-configured ad hoc networks, which is composed of information sources and user mobile devices (like BIONETS) the data dissemination is based on two kinds of communication: communication among mobile devices and between information sources and mobile devices. The communication among mobile devices can be solved by some existing algorithms and methods based on the broadcast medium. In the case of other communication, information sources can broadcast their data towards mobile devices using pull or push model. However, the results show that none of these models is scaleable or energy-efficient when the number of mobile devices around sources is not constant. In this paper, we present a promising hybrid functioning scheme of information sources, combining the pull and push models, which can be more energy-efficient and scalable when the traffic of mobile sources changes.

关键词： Mobile ad hoc networks Broadcasting Mobile communication Traffic control Energy efficiency Scalability Ad hoc networks Power generation economics Telecommunication traffic Wireless networks

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Anycast Subnet Optimization for Efficient IPv6 Mobility Management

Anycast Subnet Optimization for Efficient IPv6 Mobility Mana...

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International Global Information Infrastructure Symposium (GIIS)

作者： Laszlo Bokor Vilmos Simon Istvan Dudas Sandor Imre Department of Telecommunications Budapest University슠of슠Technology슠and슠Economics Budapest Hungary

In this paper we propose a new IPv6 micromobility framework together with a subnet forming algorithm for providing more seamless handover, while being able to coexist with the standard IPv6 macromobility protocol (MIPv6). Our framework is based on the IPv6 anycasting paradigm called anycast-based micromobility, where a scoped-anycast care-of-address is assigned for the visiting mobile nodes while moving in a given subnet (i.e. micromobility domain). According to the anycast communication model defined in IPv6, packets sent to the anycast CoA will be always optimally routed to the actual position of the mobile node in a given subnet. A simulated annealing based anycast subnet forming algorithm (SABAS) is also elemental part of our work aiming to demonstrate how IPv6 anycasting can be utilized for efficient micromobility. SABAS uses the handover and incoming session metrics generated by our mobile environment simulator.

关键词： Mobile radio mobility management Protocols Peer to peer computing Mobile communication Routing Resource management Environmental economics Electronic mail Telecommunication standards Simulated annealing

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Novel geometrical solution to additivity problem of classical quantum channel capacity

Novel geometrical solution to additivity problem of classica...

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IEEE Princeton Section Sarnoff Symposium

作者： Laszlo Gyongyosi Sandor Imre Department of Telecommunications Budapest University슠of슠Technology슠and슠Economics Budapest Hungary

ISBN: (纸本)9781424455928;9781424455935

Quantum channel additivity is currently an active area of research in Quantum Information Theory. The additivity conjectures have emerged from an attempt to find a closed form expression for the capacity of a noisy quantum channel. To this day, strict additivity for quantum channel capacity has been conjectured, but not proven. The open questions related to additivity of quantum channel capacities can be discussed by our novel approach. We show an efficient computational geometric method to analyze the additivity property, using quantum Delaunay tessellation on the Bloch ball and quantum relative entropy as distance measure.

关键词： Channel capacity Quantum computing Entropy Quantum entanglement Relativistic quantum mechanics Quantum mechanics Telecommunication computing Information theory Noise measurement Data mining

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Predicting Component Self-Alignment in Lead-Free Reflow Soldering technology by Virtue of Force Model

Predicting Component Self-Alignment in Lead-Free Reflow Sold...

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Electronics System-Integration technology Conference, ESTC

作者： Oliver Krammer Balint Sinkovics Balazs Illes Department of Electronics Technology Budapest University슠of슠Technology슠and슠Economics Budapest Hungary

Since lead-free soldering is initiated in the electronic industry in 1st of July 2006, studying the behaviour of lead-free solders in depth is more important than ever. Several studies and articles have claimed that lead-free solders do not promote the self-alignment of components, what is in contradiction with the observation of our previous experiments. Dynamic behaviour of SMT (surface mount technology) chip components during lead-free reflow soldering will be demonstrated, especially focusing on movement. A force model will be given whereby component self-alignment can be predicted in the case of using lead-free solder pastes. Experiments have been made by misplacing chip components with different sizes and the results are presented in the paper

关键词： Environmentally friendly manufacturing techniques Lead Reflow soldering Semiconductor device modeling Predictive models Surface tension Gravity Metallization Shape Equations

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Modeling moisture caused failures in stress tests

Modeling moisture caused failures in stress tests

引用

International Spring Seminar on Electronics technology

作者： P. Bojta Department of Electronics Technology Budapest University슠of슠Technology슠and슠Economics Budapest Hungary

ISBN: (纸本)0780371119

The most important time related parameter of electronic systems is MTTF (mean time to failure). In accelerated aging tests, the circuits are exposed to enormously harsh environmental conditions. The accelerating parameters and events like mechanical vibration and shock, temperature, pressure, humidity and their combinations are used as loads in stress test methods. There are different models to describe the effects caused by the mentioned stresses. In most cases, these models only include some of the parameters, but none describe all the possible effects of a stress test. By obtaining more information about the materials used in the test vehicle and integrating the available models, it is possible to derive a mostly complete model of moisture permeation, including ad-/absorption and diffusion effects. This paper gives an overview of the available models and shows a first-enclosing simulation of moisture penetration.

关键词： Moisture Stress Circuit testing Accelerated aging Life estimation Vibrations Electric shock Temperature Humidity Materials testing

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Investigating the mechanical strength of Vapor Phase soldered chip components joints

Investigating the mechanical strength of Vapor Phase soldere...

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International Symposium for Design and technology of Electronics Packages (SIITME)

作者： Olivér Krammer Tamás Garami Department of Electronics Technology Budapest University슠of슠Technology슠and슠Economics Budapest Hungary

In our experiment the mechanical strength of solder joints formed by Vapor Phase soldering was investigated. A testboard was designed, which allowed fifty pieces of 0603 size chip resistors to be placed. The soldering was carried out by infrared conventional reflow and by Vapor Phase reflow as well. After soldering the shear strength of joints formed by both of the soldering methods was measured, and the cross-section of solder joints was analyzed by Scanning Electron Microscopy. Based on the results, it can be said that the shear strength of joints formed by Vapor Phase soldering is slightly lower than the strength of joints formed by IR reflow. The thermal profile of Vapor Phase soldering needs further optimization. The detailed results are presented in the paper.

关键词： Soldering Joints Intermetallic Heat transfer Resistors Temperature measurement

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